WorldWideScience

Sample records for bone biochemical markers

  1. Biochemical markers of bone turnover

    International Nuclear Information System (INIS)

    Biochemical markers of bone turnover has received increasing attention over the past few years, because of the need for sensitivity and specific tool in the clinical investigation of osteoporosis. Bone markers should be unique to bone, reflect changes of bone less, and should be correlated with radiocalcium kinetics, histomorphometry, or changes in bone mass. The markers also should be useful in monitoring treatment efficacy. Although no bone marker has been established to meet all these criteria, currently osteocalcin and pyridinium crosslinks are the most efficient markers to assess the level of bone turnover in the menopausal and senile osteoporosis. Recently, N-terminal telopeptide (NTX), C-terminal telopeptide (CTX) and bone specific alkaline phosphatase are considered as new valid markers of bone turnover. Recent data suggest that CTX and free deoxypyridinoline could predict the subsequent risk of hip fracture of elderly women. Treatment of postmenopausal women with estrogen, calcitonin and bisphosphonates demonstrated rapid decrease of the levels of bone markers that correlated with the long-term increase of bone mass. Factors such as circadian rhythms, diet, age, sex, bone mass and renal function affect the results of biochemical markers and should be appropriately adjusted whenever possible. Each biochemical markers of bone turnover may have its own specific advantages and limitations. Recent advances in research will provide more sensitive and specific assays

  2. Changes in biochemical bone markers during pregnancy and puerperium.

    OpenAIRE

    Yoon, B. K.; Lee, J.W.; Choi, D. S.; Roh, C. R.; Lee, J.H.

    2000-01-01

    To elucidate the changes in bone turnover during pregnancy and puerperium, we measured serially the levels of serum osteocalcin and urine deoxypyridinoline (Dpy) as markers of bone formation and bone resorption, respectively, in 22 healthy women with normal pregnancy. Nineteen non-pregnant women served as control. The Dpy levels increased significantly at 16 weeks of pregnancy and remained elevated thereafter. The levels of osteocalcin, however, were significantly decreased at 16 weeks of pre...

  3. Biochemical markers for assessment of calcium economy and bone metabolism: application in clinical trials from pharmaceutical agents to nutritional products

    OpenAIRE

    Bonjour, Jean-Philippe; Kohrt, Wendy; Levasseur, Régis; Warren, Michelle; Whiting, Susan; Kraenzlin, Marius

    2014-01-01

    Nutrition plays an important role in osteoporosis prevention and treatment. Substantial progress in both laboratory analyses and clinical use of biochemical markers has modified the strategy of anti-osteoporotic drug development. The present review examines the use of biochemical markers in clinical research aimed at characterising the influence of foods or nutrients on bone metabolism. The two types of markers are: (i) specific hormonal factors related to bone; and (ii) bone turnover markers...

  4. Clinical significance of biochemical markers of bone metabolism in patients with type 2 diabetes mellitus

    International Nuclear Information System (INIS)

    Objective: To investigate the clinical significance of changes of levels of biochemical markers of bone metabolism in patients with type 2 diabetes mellitus. Methods: Serum osteocalcin (BGP, with RIA), Ca alkaline phosphatase (ALP) and random specimen urinary deoxypyridinoline (DPD, with chemiluminescence assay), Ca, creatinine levels were measured in 40 patients with type 2 diabetes mellitus and 31 controls. Results: Serum BGP levels in diabetic patients were much lower than those in the controls (P<0.05); while urinary DPD/Cr ratio and Ca/Cr ratio were significantly higher in the patients than those in the controls (P<0.05, P<0.05). Serum Ca and ALP levels were about the same in the two groups. Conclusion: Loss of bone mass in diabetic patients are due to both decreased bone formation and increased bone resorption. Determination of the levels of the biochemical markers of bone metabolism (BGP, DPD......) could be applied for early detection of osteoporosis. (authors)

  5. Bone mineral density and biochemical markers of bone metabolism in predialysis patients with chronic kidney disease.

    Science.gov (United States)

    Fidan, Nuri; Inci, Ayca; Coban, Melahat; Ulman, Cevval; Kursat, Seyhun

    2016-04-01

    The aim of the study was to evaluate the usefulness of serum bone turnover markers (BTM) and bone mineral density (BMD) determined by dual-energy X-ray absorptiometry (DEXA) in predialysis patients with chronic kidney disease (CKD). We enrolled 83 patients with CKD, 41 (49.4%) males, 42 (50.6%) females, with mean estimated glomerular filtration rate (eGFR) 23.90±12 (range=6.0-56.0). BMD of the lumbar spine (LS) (anteroposterior, L2 through L4), femoral neck (FN) and femoral trochanter (FT) were measured by DEXA. Biochemical BTM, including calcium (Ca), phosphorus (P), intact parathyroid hormone (PTH), serum specific alkaline phosphatase (serum AP), bone-specific AP (BSAP), plasma bicarbonate and 25-hydroxy-vitamin D (25hD) were used for the prediction of BMD loss. T score results of LS and FN were worse than FT. BMD levels were lower in females than in males (all palkaline phosphatase (AP) and BSAP was considered to be negative. No statistically significant association was found between BMD of all the measured skeletal sites and eGFR. Loss of BMD was identified mostly in females over ≥65 years of age and after menopause. Higher serum levels of BSAP and AP can be determined in the advanced stages of renal failure and they reflect fracture risk of the femur, but not spine. Measurements of BMD by DEXA are useful to demonstrate bone loss, but not technical enough to distinguish the quantity of bone loss between different stages of CKD. PMID:26969749

  6. Biochemical markers of bone turnover and their association with bone marrow lesions

    NARCIS (Netherlands)

    Hunter, D.J.; LaValley, M.; Li, J.; Bauer, D.C.; Nevitt, M.; Groot, J. de; Poole, R.; Eyre, D.; Guermazi, A.; Gale, D.; Totterman, S.; Felson, D.T.

    2008-01-01

    Introduction: Our objective was to determine whether markers of bone resorption and formation could serve as markers for the presence of bone marrow lesions (BMLs). Methods: We conducted an analysis of data from the Boston Osteoarthritis of the Knee Study (BOKS). Knee magnetic resonance images were

  7. Relation between body composition and biochemical markers of bone turnover among early postmenopausal women

    DEFF Research Database (Denmark)

    Hla, M M; Davis, J W; Ross, P D;

    2000-01-01

    We studied the associations between body composition and biochemical markers of bone formation and resorption among 1600 postmenopausal women, ages 45-59. Multiple regression analyses were performed to examine the independent associations of fat mass, muscle strength (quadriceps strength), height......, and whole body bone mineral content (BMC) with biochemical markers of bone formation (serum osteocalcin) and resorption (urinary type I collagen crosslinked N-telopeptides [NTX]). Per interquartile range (IQR) (the difference between 75th and 25th percentiles) increase in fat mass and whole body BMC......, the mean levels of osteocalcin decreased by 3% and 13%, respectively; NTX decreased by 5 and 21%. Fat mass and whole-body BMC were also significantly associated with decreases in the average of osteocalcin and NTX Z-scores. By contrast, the mean levels of serum osteocalcin increased by 2 and 11...

  8. Biochemical Bone Markers in Prostate Cancer Patients with Local and Advanced Bone Metastates

    OpenAIRE

    AKSOY, Hülya

    2001-01-01

    In the present study involving patients with bone metastases arising from prostate cancer, we measured urinary deoxypyridinoline (DPD) as a marker of collagen breakdown activity, serum total and bone-specific alkaline phosphatase activities and serum prostate specific antigen (PSA). This study included 20 patients with benign prostate hyperplasia (BPH) and 23 patients with carcinoma, 11 of had with bone metastases. DPD excretion in urine was significantly greater in prostate cancer patients w...

  9. Response of Biochemical Markers of Bone Metabolism to Exercise Intensity in Thoroughbred Horses

    OpenAIRE

    INOUE, Yoshinobu; MATSUI, Akira; Asai, Yo; AOKI, Fumiki; YOSHIMOTO, Kenji; MATSUI, Tohru; Yano, Hideo

    2009-01-01

    We studied the response of biochemical markers of bone metabolism to exercise intensity in horses. Four horses were walked on a mechanical walker for one week (pre-exercise). Then they performed low-speed exercise on a high-speed treadmill in the first week and medium-speed exercise in the second week and high-speed exercise in the third week of training. We measured two indices of bone resorption, serum hydroxyproline concentration and the urinary deoxypyridinoline/creatinine ratio, and seru...

  10. 骨生化指标在骨肿瘤中的临床应用进展%Clinical application progress of bone biochemical markers in bone tumors

    Institute of Scientific and Technical Information of China (English)

    周定; 张琪琪; 胡勇

    2014-01-01

    Bone tumors refer to benign and malignant tumors which originate from mesenchymal stem cells and occur in bone tissues and their accessory structures. The pathogenesis and etiology of bone tumors still remain unclear, and the diagnosis methods of bone tumors are stagnating now. X-ray, computed tomography ( CT ) and magnetic resonance imaging ( MRI ) are important in diagnosing and evaluating bone tumors, but they cannot detect the lesions until the bone destruction reaches a certain degree. Isotope bone scan can detect the microscopic lesions of bone, whereas it is too expensive and the speciifcity is poor, with high false positive rates. At present, the golden standard for the diagnosis of bone tumors is the histopathological examination of bone. However, it is dififcult to achieve early diagnosis, and it is likely to miss the best treatment period. Every disease is inevitably accompanied by molecular biological changes in the body. Biochemical markers can promptly detect the property changes of bone tumor cells, including unlimited proliferation, apoptosis, active neoangiogenesis, inifltrative growth, metastatic growth and so on. Therefore, it is of great signiifcance for the diagnosis of bone tumors to detect appropriate biochemical markers in the patients. The normal bone metabolism is maintained by the dynamic balance of bone resorption and bone formation. When bone tumors occur, the balance will be disturbed. The bone biochemical markers which relfect bone resorption and bone formation are sensitive indicators of early abnormal bone metabolism. Recently, a large number of studies have explored the significance of bone biochemical markers in patients with bone tumors. The functions of bone biochemical markers in patients with bone tumors mainly include making an early detection of microscopic tumor lesions to start early treatment ( diagnostic effects ), evaluating the effects ( therapeutic monitoring ), evaluating the prognosis and predicting the risk of

  11. Early changes in biochemical markers of bone turnover and their relationship with bone mineral density changes after 24 months of treatment with teriparatide

    DEFF Research Database (Denmark)

    Blumsohn, A; Marin, F; Nickelsen, T; Brixen, K; Sigurdsson, G; González de la Vera, J; Boonen, S; Liu-Léage, S; Barker, C; Eastell, R

    2011-01-01

    We report the changes in biochemical markers of bone formation during the first 6 months of teriparatide therapy in postmenopausal women with osteoporosis according to previous antiresorptive treatment. Prior therapy does not adversely affect the response to teriparatide treatment. Similar bone...... markers levels are reached after 6 months of treatment. INTRODUCTION: The response of biochemical markers of bone turnover with teriparatide therapy in subjects who have previously received osteoporosis drugs is not fully elucidated. We examined biochemical markers of bone formation in women with...... osteoporosis treated with teriparatide and determined: (1) whether the response is associated with prior osteoporosis therapy, (2) which marker shows the best performance for detecting a response to therapy, and (3) the correlations between early changes in bone markers and subsequent bone mineral density (BMD...

  12. The use of biochemical markers of bone remodeling in multiple myeloma: a report of the International Myeloma Working Group

    DEFF Research Database (Denmark)

    Terpos, E; Dimopoulos, M A; Sezer, O; Roodman, D; Abildgaard, N; Vescio, R; Tosi, P; Garcia-Sanz, R; Davies, F; Chanan-Khan, A; Palumbo, A; Sonneveld, P; Drake, M T; Harousseau, J-L; Anderson, K C; Durie, B G M

    2010-01-01

    Lytic bone disease is a frequent complication of multiple myeloma (MM). Lytic lesions rarely heal and X-rays are of limited value in monitoring bone destruction during anti-myeloma or anti-resorptive treatment. Biochemical markers of bone resorption (amino- and carboxy-terminal cross-linking telo...

  13. Biochemical markers for assessment of calcium economy and bone metabolism: application in clinical trials from pharmaceutical agents to nutritional products.

    Science.gov (United States)

    Bonjour, Jean-Philippe; Kohrt, Wendy; Levasseur, Régis; Warren, Michelle; Whiting, Susan; Kraenzlin, Marius

    2014-12-01

    Nutrition plays an important role in osteoporosis prevention and treatment. Substantial progress in both laboratory analyses and clinical use of biochemical markers has modified the strategy of anti-osteoporotic drug development. The present review examines the use of biochemical markers in clinical research aimed at characterising the influence of foods or nutrients on bone metabolism. The two types of markers are: (i) specific hormonal factors related to bone; and (ii) bone turnover markers (BTM) that reflect bone cell metabolism. Of the former, vitamin D metabolites, parathyroid hormone, and insulin-like growth factor-I indicate responses to variations in the supply of bone-related nutrients, such as vitamin D, Ca, inorganic phosphate and protein. Thus modification in bone remodelling, the key process upon which both pharmaceutical agents and nutrients exert their anti-catabolic or anabolic actions, is revealed. Circulating BTM reflect either osteoclastic resorption or osteoblastic formation. Intervention with pharmacological agents showed that early changes in BTM predicted bone loss and subsequent osteoporotic fracture risk. New trials have documented the influence of nutrition on bone-tropic hormonal factors and BTM in adults, including situations of body-weight change, such as anorexia nervosa, and weight loss by obese subjects. In osteoporosis-prevention studies involving dietary manipulation, randomised cross-over trials are best suited to evaluate influences on bone metabolism, and insight into effects on bone metabolism may be gained within a relatively short time when biochemical markers are monitored. PMID:25394580

  14. Bone Markers

    Science.gov (United States)

    ... bone turnover: C-telopeptide (C-terminal telopeptide of type 1 collagen (CTx)) – a marker for bone resorption. It is ... resorption include: N-telopeptide (N-terminal telopeptide of type 1 collagen (NTx)) – a peptide fragment from the amino terminal ...

  15. The role of biochemical of bone turnover markers in osteoporosis and metabolic bone disease: a consensus paper of the Belgian Bone Club.

    Science.gov (United States)

    Cavalier, E; Bergmann, P; Bruyère, O; Delanaye, P; Durnez, A; Devogelaer, J-P; Ferrari, S L; Gielen, E; Goemaere, S; Kaufman, J-M; Toukap, A Nzeusseu; Reginster, J-Y; Rousseau, A-F; Rozenberg, S; Scheen, A J; Body, J-J

    2016-07-01

    The exact role of biochemical markers of bone turnover in the management of metabolic bone diseases remains a topic of controversy. In this consensus paper, the Belgian Bone Club aimed to provide a state of the art on the use of these biomarkers in different clinical or physiological situations like in postmenopausal women, osteoporosis in men, in elderly patients, in patients suffering from bone metastasis, in patients with chronic renal failure, in pregnant or lactating women, in intensive care patients, and in diabetics. We also gave our considerations on the analytical issues linked to the use of these biomarkers, on potential new emerging biomarkers, and on the use of bone turnover biomarkers in the follow-up of patients treated with new drugs for osteoporosis. PMID:27026330

  16. Study of some common biochemical bone turnover markers in postmenopausal women

    OpenAIRE

    Sachdeva, Ashuma; Seth, Shashi; Khosla, Anju Huria; Sachdeva, Sumit

    2005-01-01

    Markers of bone formation in serum include total and bone specific alkaline phosphatase, osteocalcin and Type 1 collagen carboxy terminal extension peptide. Bone resorption can be assessed by measuring plasma tartarate resistant acid phosphtase and urinary excretion of collagen degradation products: hydroxyproline, hydroxylysine glycosides and more recently the pyridinium crosslinks and associated peptides. We compared the excretion of hydroxyproline in women of reproductive age group to thos...

  17. Hypercalcemia and altered biochemical bone markers in post-bone marrow transplantation osteopetrosis: a case report and literature review.

    Science.gov (United States)

    Kulpiya, Alisa; Mahachoklertwattana, Pat; Pakakasama, Samart; Hongeng, Suradej; Poomthavorn, Preamrudee

    2012-08-01

    Autosomal recessive osteopetrosis is a rare disorder of bone resorption defect that results in generalized sclerotic bones and bone marrow failure. Allogeneic BMT is the only treatment for cure. One of the complications following a successful BMT is hypercalcemia that is a unique complication in this group of patients. We report a three-yr-old boy with osteopetrosis who developed hypercalcemia following the successful BMT. His maximal calcium level was 13.3 mg/dL. Markedly increased both bone formation and resorption markers were demonstrated along with hypercalcemia. These findings indicated an active donor-derived osteoclastic function and thus bone resorption following the successful donor engraftment in the patient. Treatment with hyperhydration, furosemide and bone resorption inhibitors, calcitonin, and bisphosphonate led to normalization of the serum calcium level. Bone resorption but not bone formation marker was persistently elevated despite having normocalcemia during a 16.5-month follow-up period. PMID:21323826

  18. Biochemical markers of bone metabolism reflect osteoclastic and osteoblastic activity in multiple myeloma

    DEFF Research Database (Denmark)

    Abildgaard, N; Glerup, H; Rungby, Jørgen;

    2000-01-01

    histomorphometric findings. MARKERS OF BONE FORMATION: Serum C-terminal propeptide of procollagen I (PICP) and serum bone-specific alkaline phosphatase (bAP) showed significant correlations with the dynamic parameters of bone formation (r=0.57-0.58), whereas serum osteocalcin and serum total AP did not. CYTOKINES......: Highly significant correlations were observed between marrow IL-6 and rates of bone resorption and activation frequency (r=0.76-0.82) and with serum ICTP (r=0.63). Minor, but also significant correlations were observed between the resorptive indices and IL-6sR and IL-1beta. The data indicate that...

  19. Sequential analysis of biochemical markers of bone resorption and bone densitometry in multiple myeloma

    DEFF Research Database (Denmark)

    Abildgaard, Niels; Brixen, Kim; Eriksen, Erik Fink; Kristensen, Jens Erik; Nielsen, Johan Lanng; Heickendorff, Lene

    2004-01-01

    less informative. In Cox analysis, ICTP showed the highest predictive value, but should be replaced with NTx in patients with nephropathy. Pretreatment low lumbar BMD was predictive of early vertebral fractures. INTERPRETATION AND CONCLUSIONS: Sequential DEXA-scans showed heterogeneous local BMD...... changes, and our data do not support routine use of sequential DEXA-scans. However, lumbar DEXA-scans at diagnosis can identify patients with increased risk of early vertebral collapses. Sequential analyses of serum ICTP and urinary NTx are useful for monitoring bone damage....

  20. Measurement of bone mineral density using DEXA and biochemical markers of bone turnover in 5-year survivors after orthotopic liver transplantation

    International Nuclear Information System (INIS)

    Purpose: To observe bone loss and bone metabolism status in 5-year survivors after orthotopic liver transplantation (OLT). Methods: Measurement of bone mineral density (BMD) of the lumbar spine (L2∼L4) and femoral neck using dual energy X-ray absorptiometry (DEXA) and analysis of biochemical markers of bone turnover, such as ostecalcin (OSC), bone alkaline phosphatase (BAP), carboxy-terminal propeptide of type I procollagen (PICP), carboxy-terminal cross-linked telo-peptide of type I collagen (ICTP), PTH and 25-hydroxy-vitamin D (25-OH-D). These markers were measured in 31 5-year survivors after OLT, 34 patients with chronic liver failure (CLF) before OLT and 38 normal subjects. Results: Age-matched Z-score of BMD (Z-score) at L2∼L4 was significantly higher in 5-year survivors than that in patients with CLF before OLT. Incidence of osteoporosis (Z-score<-2.0) in 5-year survivors was significantly lower than that in patients with CLF before OLT. Although serum concentrations of bone formation and bone resorption markers in 5-year survivors were high than those of normal subjects, as compared to patients with CLF before OLT, serum OSC was increased, serum ICTP and BAP were reduced, serum PICP was unchanged. Serum PTH and 25-OH-D level was normal. Conclusions: In 5-year survivors following liver transplantation there was a reduction in bone loss and incidence of osteoporosis and an improvement of bone metabolism

  1. The effects of twelve weeks of bed rest on bone histology, biochemical markers of bone turnover, and calcium homeostasis in eleven normal subjects

    Science.gov (United States)

    Zerwekh, J. E.; Ruml, L. A.; Gottschalk, F.; Pak, C. Y.; Blomqvist, C. G. (Principal Investigator)

    1998-01-01

    This study was undertaken to examine the effects of 12 weeks of skeletal unloading on parameters of calcium homeostasis, calcitropic hormones, bone histology, and biochemical markers of bone turnover in 11 normal subjects (9 men, 2 women; 34 +/- 11 years of age). Following an ambulatory control evaluation, all subjects underwent 12 weeks of bed rest. An additional metabolic evaluation was performed after 12 days of reambulation. Bone mineral density declined at the spine (-2.9%, p = 0.092) and at the hip (-3.8%, p = 0.002 for the trochanter). Bed rest prompted a rapid, sustained, significant increase in urinary calcium and phosphorus as well as a significant increase in serum calcium. Urinary calcium increased from a pre-bed rest value of 5.3 mmol/day to values as high as 73 mmol/day during bed rest. Immunoreactive parathyroid hormone and serum 1,25-dihydroxyvitamin D declined significantly during bed rest, although the mean values remained within normal limits. Significant changes in bone histology included a suppression of osteoblastic surface for cancellous bone (3.1 +/- 1.3% to 1.9 +/- 1.5%, p = 0.0142) and increased bone resorption for both cancellous and cortical bone. Cortical eroded surface increased from 3.5 +/- 1.1% to 7.3 +/- 4.0% (p = 0.018) as did active osteoclastic surface (0.2 +/- 0.3% to 0.7 +/- 0.7%, p = 0.021). Cancellous eroded surface increased from 2.1 +/- 1.1% to 4.7 +/- 2.2% (p = 0.002), while mean active osteoclastic surface doubled (0.2 +/- 0.2% to 0.4 +/- 0.3%, p = 0.020). Serum biochemical markers of bone formation (osteocalcin, bone-specific alkaline phosphatase, and type I procollagen extension peptide) did not change significantly during bed rest. Urinary biochemical markers of bone resorption (hydroxyproline, deoxypyridinoline, and N-telopeptide of type I collagen) as well as a serum marker of bone resorption (type I collagen carboxytelopeptide) all demonstrated significant increases during bed rest which declined toward normal

  2. The influence of ibandronate treatment on bone density and biochemical bone markers in patients with osteogenesis imperfecta

    Directory of Open Access Journals (Sweden)

    Ingmar Ipach

    2012-09-01

    Full Text Available Osteogenesis imperfecta (OI is characterized by different signs including increased bone fragility, short stature, blue sclera, abnormal tooth growth and often secondary immobility. No curative therapy has been found for this rare disease up to now, and different pharmacological substances have been tried as treatment for severe forms of OI. Promising results were seen with intravenous bisphosphonates in the treatment of patients with OI. The aim of present study was to show the effect of intravenous ibandronate therapy on bone density and bone metabolism markers. We analyzed the data of 27 patients with the diagnosis of OI who were treated off-label with intravenous ibandronate. Ibandronate was administered by intravenous infusion every three months at a dosage of 0.3-2 mg. Bone turnover markers and bone density were measured before starting therapy and every three months during treatment. Bone density was measured by using an ultrasound imaging system providing an accurate image of the calcaneus and by evaluating broadband ultrasound attenuation (BUA. Twenty-seven patients were treated with intravenous iban- dronate during the observation period. 18 were female. The mean age of all patients was 23.9 years ± 19.6 (range 4-63. Seventeen patients were categorized to have OI Type I, 5 patients to have OI Type III and 5 patients to have OI Type IV. There was a statistically significant decrease in total alkaline phosphatase (P<0.0001. We detected also a statistically significant decrease in the ratio urinary deoxypyridinoline/urinary creatinine (P=0.0048 and the ratio urinary pyridinoline/urinary creatinine (P<0.0001 respectively. There was also a statistically significant increase in serum magnesium (P=0.034 and BUA (P=0.0071. No statistically significant changes were seen for total serum calcium (P=0.16, the ratio of urine calcium/urine creatinine (P=0.29, alkaline phosphatase (isoform bone (P=0.3, procollagen-I-peptide (P=0.5, osteocalcin (P=0

  3. Change of Bone Mineral Density and Biochemical Markers of Bone Turnover in Patients on Suppressive Levothyroxine Therapy for Differentiated Thyroid Carcinoma

    Science.gov (United States)

    Kim, Chei Won; Hong, Seokbo; Oh, Se Hwan; Lee, Jung Jin; Han, Joo Young; Kim, So Hun; Nam, Moonsuk; Kim, Yong Seong

    2015-01-01

    Untreated hyperthyroidism and high-dose thyroid hormone are associated with osteoporosis, and increased bone mineral density (BMD) has been demonstrated in postmenopausal females with hypoparathyroidism. Studies on the effect of suppressive levothyroxine (LT4) therapy on BMD and bone metabolism after total thyroidectomy in patients with differentiated thyroid carcinoma have presented conflicting results, and few studies in relation to the status of hypoparathyroidism have been studied. One hundred postmenopausal women and 24 premenopausal women on LT4 suppression therapy were included in this study. BMD of lumbar spine and femur and bone turnover markers were measured at the baseline and during the follow-up period up to 18 months using dual energy X-ray absorptiometry. Biochemical marker of bone resorption was measured by urine deoxypyridinoline and bone formation by serum osteocalcin. The age ranged from 36 to 64 years old. Thyroid stimulating hormone (TSH) was suppressed during the study. The results showed that BMD of femur and lumbar spine were not significantly changed in both pre- and postmenopausal women except femur neck in postmenopausal women without hypoparathyroidism. Patients with hypoparathyroidism had higher BMD gain than those without hypoparathyroidism in total hip (1.25 vs. -1.18%, P=0.015). Biochemical markers of bone turnover, serum osteocalcin, and urine deoxypyridinoline did not show significant change. In conclusion, patients with well differentiated thyroid carcinoma are not at a great risk of bone loss after LT4 suppressive therapy. The state of hypoparathyroidism is associated with increased BMD, particularly in postmenopausal women. PMID:26389089

  4. Relationship among panoramic radiography findings, biochemical markers of bone turnover and hip bone mineral density in the diagnosis of postmenopausal osteoporosis

    International Nuclear Information System (INIS)

    Recent investigations have shown that panoramic radiography might be a useful tool in the early diagnosis of osteoporosis. In addition, bone turnover biochemical marker might be valuable in predicting osteoporosis and fracture risks in the elderly, especially in post-menopausal women. The aim of the present study was to evaluate the relationship among the radio morphometric indices of the mandible, biochemical markers of the bone turnover and hip bone mineral density in a group of post-menopausal women. Patients and Methods: Evaluations of mandibular cortical width, mandibular cortical index, panoramic index and alveolar crest resorption ration (M/M ration) were carried out on panoramic radiographs of 140 post-menopausal women with an age range of 44-82 years. Hip bone mineral density was measured by dual-energy X-ray absorptiometry method. Bone mineral density values were divided into three groups of normal (T score>-1.0), Osteopenic (T score, -2.5 to -1.0) and Osteoporotic (T score<-2.5). Serum alkaline phosphatase and 25(OH) D3 were measured. Results: A decrease in mandibular cortical width by 1 mm increases the likelihood of osteopenia or osteoporosis up to 40%, having taken into consideration the effect of menopause duration. A 1 mm decrease in mandibular cortical width increased the likelihood of moderate or severe erosion of the lower cortex of the mandible up to 28% by taking age into consideration. The results did not demonstrate a statistically significant relationship between bone turnover markers and mandibular radio morphometric indices. Conclusion: Panoramic radiography gives sufficient information to make an early diagnosis regarding osteoporosis in post-menopausal women. Panoramic radiographs may be valuable in the prevention of osteoporotic fractures in elderly women.

  5. Biochemical Markers Of Bone Turnover in Egyptian Women at Different Ages

    Directory of Open Access Journals (Sweden)

    Olfat A Khalil &Kholoud S Ramadan

    2011-07-01

    Full Text Available Osteoporosis is a metabolic bone disease characterized by bone remodeling .This study was done for the detection of some blood and urine markers in cases of osteoporosis among Egyptian women at different ages .The study included 100 women divided into three groups. The first group included 33 women their ages ranged between 35-45 years old, the second included 33 women their ages ranged between 45-55 years old and the third group included 34 women their ages were above 55 years old. Fore all subjects DEXA densitometry was performed. Serum calcium, phosphorous, alkaline phosphatase, Osteocalcin and urinary hydroxyproline, deoxypyridinoline and creatinine were estimated. Results: In osteopenic and osteoporotic women there was elevation in serum alkaline phosphatase and osteocalcin and in urinary pyridinoline and hydroxyproline, while there was decrease in serum calcium .Conclusion: The Egyptian women subjected to the study were suffering from osteopenia from the age of 35 years old or may be earlier Above the age of 55 (postmenopausal it was found that 50% of women were osteopenic and osteoporotic.

  6. Significance of CEA, CA15-3 and biochemical markers of bone turnover in the diagnosis of bone metastasis from breast cancer

    International Nuclear Information System (INIS)

    Objective: To evaluate the significance of tumor markers CEA and CA15-3, and biochemical markers of bone turnover (total procollagen type Ⅰ amino-terminal propeptide (TP Ⅰ NP), β-isomerized carboxyterminal propeptide (β-CTx), ALP and PTH) in the diagnosis of bone metastasis from breast cancer. Methods: A total of 78 patients (all females) with mean age (56.72 ± 10.76) years, who were diagnosed with breast cancer, were included in this study. The patients were divided into two groups based on radionuclide bone imaging: with bone metastasis (n=32) and without bone metastasis (n=46). The serum concentrations of CEA, CA15-3, TP Ⅰ NP, β-CTx, PTH, ALP were measured. Gleason scores were evaluated. The diagnostic value was evaluated by ROC curve.The two groups were compared using two-sample t test. The correlations between bone metastasis and tumor markers, bone metastasis and biochemical markers of bone turnover were analyzed with Pearson correlation and logistic analysis. Results: The serum levels of CEA, CA15-3, TP Ⅰ NP, β-CTx, PTH and ALP were significantly higher in the group with bone metastasis than those in the group without bone metastasis (t: 4.16-7.56, all P<0.05). For the diagnosis of bone metastasis from breast cancer, the AUC of CEA, CA15-3, TP Ⅰ NP, [β-CTx, PTH and ALP was 0.815, 0.887, 0.869, 0.852, 0.844, 0.731, respectively. Using the cut-off values of 4.18 μg/L for CEA, 0.04 U/L for CA15-3, 49.70 μg/L for TP Ⅰ NP, 0.47 pg/L for β-CTx,54.90 ng/L for PTH and 49.90 U/L for ALP, the sensitivities were 56.3% (18/32), 75.0% (24/32), 78.1% (25/32), 81.3% (26/32), 78.1% (25/32), 68.8% (22/32) and the specificities were 80.4% (37/46), 84.8% (39/46), 76.1% (35/46), 78.3% (36/46), 69.6% (32/46), 58.7% (27/46), respectively. CEA, CA15-3, TP Ⅰ NP, β-CTx, PTH, ALP and Gleason score were positively correlated with the presence of bone metastasis (r: 0.267-0.636, all P<0.05). CEA, CA15-3, TP Ⅰ NP, β-CTx, PTH and Gleason score were independent

  7. Biological and within-subject variability of calcium kinetics and biochemical markers of bone turnover

    Science.gov (United States)

    Bone loss is a critical issue during space flight. Evaluating changes in bone and calcium metabolism in astronauts often requires multiple preflight data collection points. Bone turnover and calcium kinetics were measured in 4 healthy subjects, and the day-to-day and between-subject variations were ...

  8. The value of the clinical application of biochemical marker of bone tumover in patients Type 2 diabetes complicated with osteoporosis

    International Nuclear Information System (INIS)

    Objective: To explore the value of the application of biochemical marker of bone turnover in the early diagnosis of osteoporosis (OP) in patients with type 2 diabetes (DM2). Methods: 112 patients with type 2 diabetes were studied, according to their bone mineral density (BMD) values,patients were divided into OP group and none-OP group. Then compared differences in serum total procollagen type I amino-terminal propeptide (TPINP),β-isomerized carboxy terminal propeptide (β-CTx), parathyroid hormone (PTH) and serum calcium (Ca2+). Results: Compared with those in non-OP group,patients in the OP group had higher TPINP and β-CTx, which were significantly different according to t-test (P2+ values in the two groups were no neal difference. Conclusion: The combined application of total procollagen type I amino-terminal propeptide, β-isomerized carboxy terminal propeptide is helpful for the diagnosis of osteoporosis in patients with type 2 diabetes. (authors)

  9. Changes in biochemical markers and bone mass after withdrawal of ibandronate treatment

    DEFF Research Database (Denmark)

    Ravn, Pernille; Christensen, J O; Baumann, M; Clemmesen, B

    1998-01-01

    quartiles with less reduced concentrations (p < 0.01). During the withdrawal period, uCL and alkaline phosphatase (AP) returned to baseline values 12 months after discontinuation of treatment in all groups, whereas OC(N-MID) and bone-specific AP were still reduced 10%-25% in the groups previously treated...

  10. Biochemical parameters of bone metabolism in bone metastases of solid tumors (Review)

    NARCIS (Netherlands)

    Meijer, Wilhelmus; van der Veer, E; Willemse, P H

    1998-01-01

    The role of biochemical markers of bone metabolism in the diagnosis and monitoring of bone metastases in solid tumors is reviewed. Emphasis is on the recently developed markers, which may provide a more accurate quantitation of bone metabolism. In metastatic bone disease, bone formation and resorpti

  11. Interrelationships between tooth properties and biochemical bone turnover markers investigated on six-month-old pig model.

    Science.gov (United States)

    Tymczyna, Barbara; Tatara, Marcin R; Krupski, Witold; Tymczyna-Sobotka, Monika; Bachanek, Teresa

    2013-01-01

    The aim of the study was to determine interrelationships between bone tissue metabolism indices and morphological, biomechanical and densitometric properties of hard dental tissues. First primary maxillary incisor from 6-month-old pigs (N=27) was evaluated in terms of weight and length. Mean volumetric tooth mineral density, total tooth volume, enamel total volume, enamel volumetric mineral density, dentine total volume and dentine volumetric mineral density were estimated with the use of quantitative computed tomography and micro computed tomography techniques. Tooth mineral density and tooth mineral content were evaluated with the use of dual-energy X-ray absorptiometry. Microhardness of enamel was measured using Vicker's test. Evaluations of total calcium, ionized calcium, magnesium, phosphorus, alkaline phosphatase, bone alkaline phosphatase, osteocalcin, C-terminal telopeptide of type-I collagen (CTX), insulin-like growth factor-1, growth hormone and parathyroid hormone were performed in plasma and serum samples. Pearson's correlation coefficients were determined between all the investigated variables, and P<0.05 was considered as statistically significant. The obtained results have shown mainly mutual dependences between biochemical indicators of bone metabolism. Evaluation of CTX concentration in serum of pigs has shown the highest predictive value in relation to morphological, densitometric and biomechanical properties of teeth. PMID:23076035

  12. Effects of Aerobic Step Combined with Resistance Training on Biochemical Bone Markers, Health-Related Physical Fitness and Balance in Working Women.

    Science.gov (United States)

    Anek, Achariya; Kanungsukasem, Vijit; Bunyaratavej, Narong

    2015-09-01

    The objectives of this research were to develop an aerobic step combined with resistance training exercise program, and to compare the effects of A) aerobic step exercise training (STE), B) resistance aerobic exercise training (RES), C) a combined aerobic step with resistance exercise training (COM) on the health-related fitness, balance, and biochemical bone markers. Sixty participants were working female volunteers at the age of 35-45. They were divided into 4 groups by simple random sampling method. Fifteen of the participants were in the STE group, 14 in the RES group, 15 in the COM group, and 16 in the control group (CON). The STE, RES and COM exercise training programs were designed to yield the same intensity and achieve the same range of heart rate during each stage of the program. During the training, music was used to set the tempo of the workouts. At the 8th week, it was found that resting heart rate and systolic blood pressure significantly-increased only in the STE and COM groups. After 16 weeks, the experiment results showed the significant improvement in the COM and STE groups of exercise training for β-CrossLaps, P1NP NMID Osteocalcin and bone formation (PINP/β-CrossLaps x0.31) but not in the RES group. For balance ability, the COM group showed significantly greater change than the RES group after the training intervention (p < 0.05). It can thus be concluded that the STE and COM training were effective in improving bone formation (PINP/β-CrossLaps x 0.31) but not in the RES group. For balance ability, the COM group showed more significant change than the RES group. Therefore, this is not only a good exercise choice for the working-age people but also it can help reduce the risks of osteoporosis and falling in women in particular. PMID:26529814

  13. Monitoring of alendronate treatment and prediction of effect on bone mass by biochemical markers in the early postmenopausal intervention cohort study

    DEFF Research Database (Denmark)

    Ravn, Pernille; Hosking, D; Thompson, D; Cizza, G; Wasnich, R D; McClung, M; Yates, A J; Bjarnason, N H; Christiansen, C

    1999-01-01

    To establish whether biochemical markers could be used to monitor alendronate (ALN) treatment and predict long-term response in bone mass, we used results from an ongoing, randomized trial of ALN treatment for prevention of postmenopausal osteoporosis (n = 1202). In women treated with ALN (5 mg...... a 4- to 5-fold greater increase at month 24 in BMD in the tertiles, with the greatest decrease at month 6 in NTX or OC. In women treated with ALN (5 mg) who had a change at month 24 in spine BMD of at least 0%, 86% (NTX) and 79% (OC) had a decrease at month 6 of at least 40% (NTX) or 20% (OC......) (sensitivity). The corresponding specificities were 48% (NTX) and 53% (OC). In conclusion, change at month 6 in NTX and OC, in groups of women treated with ALN, indicated the numeric long-term response in BMD within these groups. In individual women, a decrease at month 6, in NTX or OC below the cut...

  14. Bone markers and osteoporosis therapy

    Directory of Open Access Journals (Sweden)

    Francisco Bandeira

    2014-07-01

    Full Text Available Several factors are involved in determining bone quality including bone density, bone turnover, the extent of trabecular bone connectivity, cortical porosity and geometry. Metabolically active and in a continuous process of remodeling, approximately 20% of bone tissue is renewed annually. Bone turn over markers (BTM are frequently used in clinical trials and to provide valid information about the effectiveness of osteoporosis treatment, reflecting the state of bone metabolism and its response to treatment, although they are not useful alone to estimate bone loss. In this review the behavior of BTM from different clinical trials or different osteoporotic drugs will be addressed.

  15. Comparison of calcium carbonate and aluminium hydroxide as phosphate binders on biochemical bone markers, PTH(1-84), and bone mineral content in dialysis patients

    DEFF Research Database (Denmark)

    Jespersen, B; Jensen, J D; Nielsen, H K;

    1991-01-01

    Bone mineral content, estimated by single-photon absorptiometry of the forearm, serum values of intact parathyroid hormone (PTH(1-84], osteocalcin, alkaline phosphatase, 1,25-dihydroxycholecalciferol (1,25(OH)2D3), and aluminium were determined during treatment with calcium carbonate (CaCO3) or...... aluminium hydroxide (Al(OH)3) in 11 dialysis patients participating in a randomised cross-over study. Each treatment period lasted 6 months. Serum phosphorus was maintained in the range 1.5-2.0 mmol/l. During Al(OH)3 treatment bone mineral content (BMC) decreased by 11% per half-year (mean), but only by 3......% per half-year during CaCO3 treatment (P less than 0.05). Comparing the CaCO3 and Al(OH)3 periods the following differences were found: serum calcium increased during CaCO3 treatment, PTH(1-84) decreased (79% of initial values during CaCO3 versus 196% during Al(OH)3, mean area under curve, P less than...

  16. Analysis on the relationship between renal osteodystrophy and the biochemical marker of bone turnover and other related factors in patients with chronic kidney diseases

    International Nuclear Information System (INIS)

    Objective: To investigate the relationship between renal osteodystrophy and the biochemical marker of bone turnover in patients with chronic kidney diseases. Methods: A total of 102 patients with chronic kidney diseases (CKD) and 52 healthy subjects (normal control) were included in this study. The level of total procollagen type Ⅰ amino-terminal propeptide of (TP Ⅰ NP), β-isomerized carboxyterminal propeptide (β-CTx), intact parathyroid hormone (iPTH), serum calcium (Ca2+), serum phosphorus (P), alkaline phosphatase (ALP) were detected. The correlations between renal osteodystrophy in the patients with chronic kidney diseases and other related factors were analyzed. Results: Compared with the normal control group, there were higher TP Ⅰ NP, β-CTx, iPTH, P, ALP, Cr, Bun and β2-MG, in the CKD group which were significantly different according to Mann-Whitney U test (P<0.05 or <0.01). The Ca2+ and 1, 25-OH Vitamin d3 [1, 25 (OH)2D3] in the CKD group were significantly decreased compared with the normal control group (P<0.05). Correlation analysis showed TP Ⅰ NP was positively correlated with β-CTx, iPTH, P, CaxP, ALP, Cr, Bun, β2-MG (r was 0.790, 0.681, 0.573, 0.541, 0.550, 0.598, 0.793 respectively, P<0.01), Correlation analysis showed β-CTx was positively correlated with iPTH, P, CaxP, ALP, Cr, Bun, β2-MG (r was 0.803, 0.527, 0.449, 0.659, 0.672, 0.565, 0.624 respectively, P<0.01). TP Ⅰ NP was negatively correlated with Ca2+ and 1, 25 (OH)2D3 (r was -0.302, -0.582 respectively, P<0.01). β-CTx was negatively correlated with Ca2+ and 1, 25 (OH)2D3 (r was -0.265, -0.595 respectively, P<0.01). The iPTH was positively correlated with age, TP Ⅰ NP, β-CTx, P, CaxP, ALP, Cr, Bun and β2-MG (r was 0.485, 0.681, 0.803, 0.630, 0.541, 0.486, 0.690, 0.648, 0.531 respectively, P<0.05 or <0.01), but was negatively correlated with Ca2+ and 1, 25 (OH)2D3 (r was -0.318, -0.621 respectively, P<0.05). Conclusion: The application of total procollagen type

  17. Importance of Biochemical Markers in Postmenopausal and Senile Osteoporosis

    Directory of Open Access Journals (Sweden)

    Deniz Evcik

    2002-12-01

    Full Text Available Recently, the biochemical markers are widely used in order to evaluate the bone turnover. This study was planned to investigate the role of biochemical markers and Bone Mineral Density(BMD in postmenopausal (PMO and senile osteoporosis (SO patients. A total of 86 patients( 44 PMO, 42 SO, ages ranged between 39-79 were included in this study. Alkaline phosphatase (ALP and osteocalcin levels were determined from blood samples. Urinary deoxypyridinoline(Dpd and creatinine(cr concentration were examined and the ratio of Dpd/cr was calculated. Also BMD of the patients were measured from L1-L4 and proximal femur and t score were determined. There was no statistical difference in ALP levels between two groups. Osteocalcine and Dpd/cr levels were statistically increased in PMO group(p<0.001. According to BMD t score which was measured from proximal femur was significantly higher in SO patients(p<0.05. Our results show that biochemical markers are useful for the assessment of high-turnover osteoporosis.

  18. Serum biochemical markers in carcinoma breast.

    Directory of Open Access Journals (Sweden)

    Seth R

    2003-08-01

    Full Text Available BACKGROUND: Despite the extensive research for many years throughout the world, the etiopathogenesis of cancer still remains obscure. For the early detection of carcinoma of various origins, a number of biochemical markers have been studied to evaluate the malignancy. AIM: To analyse serum gamma glutamyl transpeptidase (GGTP, lactate dehydrogenase (LDH and superoxide dismutase (SOD in carcinoma breast patients. SETTINGS & DESIGN: The serum biochemical markers were estimated in twenty five histopathologically confirmed patients with carcinoma breast and equal number of healthy age- matched individuals served as control. MATERIAL & METHODS: Serum gamma glutamyl transpeptidase (GGTP, lactate dehydrogenase (LDH and superoxide dismutase (SOD were estimated and their sensitivity determined. Statistics: Data was analysed with student′s ′t′-test and sensitivity score of these markers was determined. RESULTS & CONCLUSIONS: The mean serum GGTP, LDH and SOD activities in patients with carcinoma breast were tremendously increased as compared to controls, and a steady increase was observed in their activities from stage I through stage IV as well as following distant metastasis. Serum GGTP, LDH and SOD might prove to be most sensitive biomarkers in carcinoma breast in early detection of the disease.

  19. Bone turnover markers in epileptic patients under chronic valproate therapy

    Directory of Open Access Journals (Sweden)

    Mohammad Zare

    2013-01-01

    Full Text Available Background: The effects of chronic valproic acid administration on bone health have been a matter of concern and controversy. In this study, the bone status following valproate intake was assessed by using several bone-related biochemical markers. Materials and Methods: In this case-control study, 62 epileptic patients and 40 age- and gender-matched controls were enrolled. The patients had been under chronic valproate therapy (758 ± 29 mg/day for at least the past 6 months, without any vitamin D/or calcium supplementation. Serum markers of bone turnover (carboxy-terminal telopeptide of type I collagen (CTX and bone-specific alkaline phosphatase [BALP], calcium, phosphorus, total alkaline phosphatase, and parathyroid hormone levels were measured in both groups. Results: The markers of bone turnover as well as other measured bone biochemical parameters did not statistically differ between the two groups. Conclusion: Valproate therapy at the mentioned doses does not seem to change bone turnover in adult epileptic patients.

  20. Correlations between female breast density and biochemical markers

    OpenAIRE

    Kim, Ji-Hye; Lee, Hae-Kag; Cho, Jae-Hwan; Park, Hyong-Keun; Yang, Han-Jun

    2015-01-01

    [Purpose] The aim of this study was to identify biochemical markers related to breast density. The study was performed with 200 patients who received mammography and biochemical marker testing between March 1, 2014 to October 1, 2014. [Subjects and Methods] Following the American College of Radiology, Breast Imaging Reporting and Data System (ACR BI-RADS), breast parenchymal pattern density from mammography was categorized into four grades: grade 1, almost entirely fat; grade 2, fibroglandula...

  1. Occurrence of bacteria and biochemical markers on public surfaces.

    Science.gov (United States)

    Reynolds, Kelly A; Watt, Pamela M; Boone, Stephanie A; Gerba, Charles P

    2005-06-01

    From 1999-2003, the hygiene of 1061 environmental surfaces from shopping, daycare, and office environments, personal items, and miscellaneous activities (i.e., gymnasiums, airports, movie theaters, restaurants, etc.), in four US cities, was monitored. Samples were analyzed for fecal and total coliform bacteria, protein, and biochemical markers. Biochemical markers, i.e., hemoglobin (blood marker), amylase (mucus, saliva, sweat, and urine marker), and urea (urine and sweat marker) were detected on 3% (26/801); 15% (120/801), and 6% (48/801) of the surfaces, respectively. Protein (general hygiene marker) levels > or = 200 microg/10 cm2 were present on 26% (200/801) of the surfaces tested. Surfaces from children's playground equipment and daycare centers were the most frequently contaminated (biochemical markers on 36%; 15/42 and 46%; 25/54, respectively). Surfaces from the shopping, miscellaneous activities, and office environments were positive for biochemical markers with a frequency of 21% (69/333), 21% (66/308), and 11% (12/105), respectively). Sixty samples were analyzed for biochemical markers and bacteria. Total and fecal coliforms were detected on 20% (12/60) and 7% (4/ 60) of the surfaces, respectively. Half and one-third of the sites positive for biochemical markers were also positive for total and fecal coliforms, respectively. Artificial contamination of public surfaces with an invisible fluorescent tracer showed that contamination from outside surfaces was transferred to 86% (30/ 35) of exposed individual's hands and 82% (29/35) tracked the tracer to their home or personal belongings hours later. Results provide information on the relative hygiene of commonly encountered public surfaces and aid in the identification of priority environments where contaminant occurrence and risk of exposure may be greatest. Children's playground equipment is identified as a priority surface for additional research on the occurrence of and potential exposure to infectious

  2. Biochemical Markers of Joint Tissue Turnover

    DEFF Research Database (Denmark)

    Bay-Jensen, Anne-Christine; Sondergaard, Bodil Cecilie; Christiansen, Claus;

    2009-01-01

    available for the study of tissue turnover in each of the three compartments of the articular joint, that is the bone, the cartilage, and the synovium. Finally, we provide some perspective to future developments in biomarker discovery and discuss the potential impact such technologies could have on the drug...

  3. Biochemical markers identify influences on bone and cartilage degradation in osteoarthritis - the effect of sex, Kellgren-Lawrence (KL score, Body Mass Index (BMI, oral salmon calcitonin (sCT treatment and diurnal variation

    Directory of Open Access Journals (Sweden)

    Henriksen K

    2010-06-01

    Full Text Available Abstract Background Osteoarthritis (OA involves changes in both bone and cartilage. These processes might be associated under some circumstances. This study investigated correlations between bone and cartilage degradation in patients with OA as a function of sex, Kellgren-Lawrence (KL score, Body Mass Index (BMI, oral salmon calcitonin (sCT treatment and diurnal variation. Methods This study was a 2-week, double-blind, double-dummy, randomized study including 37 postmenopausal women and 36 men, aged 57-75 years, with painful knee OA, and a KL-score of I - III. Subjects were allocated to one of three treatment arms: 0.6 mg or 0.8 mg oral sCT, or placebo given twice-daily for 14 days. Correlations between gender, KL score, or BMI and the bone resorption marker, serum C-terminal telopeptide of collagen type I (CTX-I, or the cartilage degradation marker, urine C-terminal telopeptide of collagen type II (CTX-II were investigated. Results At baseline, biomarkers indicated women with OA experienced higher bone and cartilage degradation than men. CTX-I levels were significantly higher, and CTX-II levels only marginally higher, in women than in men (p = 0.04 and p = 0.06, respectively. Increasing KL score was not correlated with bone resorption, but was significantly associated with the cartilage degradation CTX-II marker in both men and women (p = 0.007. BMI was significantly and negatively correlated to the bone resorption marker CTX-I, r = -0.40 (p = 0.002, but showed only a borderline positive correlation to CTX-II, r = 0.25 (p = 0.12. Before morning treatments on days 1 and 14, no correlation was seen between CTX-I and CTX-II in either the sCT or placebo group. However, oral sCT and food intake induced a clear correlation between these bone and cartilage degradation markers. Four hours after the first sCT dose on treatment days 1 and 14, a significant correlation (r = 0.71, p p = 0.02, but not on day 14. Conclusion Bone resorption was higher in

  4. Comparisons between two biochemical markers in evaluating periodontal disease severity: a cross-sectional study

    OpenAIRE

    Khongkhunthian, Sakornrat; Kongtawelert, Prachya; Ongchai, Siriwan; Pothacharoen, Peraphan; Sastraruji, Thanapat; Jotikasthira, Dhirawat; Krisanaprakornkit, Suttichai

    2014-01-01

    Background The purpose of this study was to compare two biochemical markers, which have been previously used to determine the degrees of alveolar bone destruction, in evaluating periodontal disease severity. Methods The WF6 epitope of chondroitin sulfate (CS) and the alkaline phosphatase (ALP) levels were determined in gingival crevicular fluid (GCF) samples collected from patients with various degrees of disease severity, including ten patients with gingivitis (50 gingivitis sites) and 33 pa...

  5. Exploring correlation between bone metabolism markers and densitometric traits in extended families from Spain.

    Science.gov (United States)

    Athanasiadis, Georgios; Arranz, Laura; Ziyatdinov, Andrey; Brunel, Helena; Camacho, Mercedes; Malouf, Jorge; Sosa, Nerea Hernandez-de; Vila, Luis; Casademont, Jordi; Soria, Jose Manuel

    2016-09-01

    Osteoporosis is a common multifactorial disorder characterized by low bone mass and reduced bone strength that may cause fragility fractures. In recent years, there have been substantial advancements in the biochemical monitoring of bone metabolism through the measurement of bone turnover markers. Currently, good knowledge of the genetics of such markers has become an indispensable part of osteoporosis research. In this study, we used the Genetic Analysis of Osteoporosis Project to study the genetics of the plasma levels of 12 markers related to bone metabolism and osteoporosis. Plasma phenotypes were determined through biochemical assays and log-transformed values were used together with a set of covariates to model genetic and environmental contributions to phenotypic variation, thus estimating the heritability of each trait. In addition, we studied correlations between the 12 markers and a wide variety of previously described densitometric traits. All of the 12 bone metabolism markers showed significant heritability, ranging from 0.194 for osteocalcin to 0.516 for sclerostin after correcting for covariate effects. Strong genetic correlations were observed between osteocalcin and several bone mineral densitometric traits, a finding with potentially useful diagnostic applications. In addition, suggestive genetic correlations with densitometric traits were observed for leptin and sclerostin. Overall, the few strong and several suggestive genetic correlations point out the existence of a complex underlying genetic architecture for bone metabolism plasma phenotypes and provide a strong motivation for pursuing novel whole-genome gene-mapping strategies. PMID:27241279

  6. Dissociation of bone formation markers in bone metastasis of prostate cancer.

    OpenAIRE

    Koizumi, M; Maeda, H.; Yoshimura, K; Yamauchi, T.; Kawai, T.; Ogata, E

    1997-01-01

    To clarify the meaning and clinical value of bone formation markers in bone metastasis from prostate cancer, we investigated the bone formation markers carboxy-terminal propeptide of type I procollagen (PICP), bone-specific alkaline phosphatase (BA1-p) and osteocalcin, so-called bone gla protein (BGP) in 43 prostate cancer patients with and 46 patients without overt bone metastasis. Patients with bone metastasis were evaluated repeatedly by bone scan at intervals of 3-6 months. The expression...

  7. Urine products of bone breakdown as markers of bone resorption and clinical usefulness of urinary hydroxyproline:an overview

    Institute of Scientific and Technical Information of China (English)

    Baris Simsek; (O)zgul Karacaer; inci Karaca

    2004-01-01

    Purpose The purpose of this study is to review the urine products of bone breakdown as markers of bone resorption and usefulness of urinary hydroxyproline. Data Related researches published in 1985 -2000 were systematically reviewed. Results Bone markers could be used for early diagnosis of bone metabolic diseases. Biochemical markers of bone resorption that reflect osteoclast activity and/or collagen degradation provide a new and potentially important clinical tool for the assessment and monitoring of bone metabolism. Assessment of bone resorption can be achieved with measurement of urinary hydroxylysine glycosides, urinary excretion of the collagen pyridinium cross-links, urinary excretion of type I collagen telopeptide breakdown products (cross-linked telopeptides) and urinary hydroxyproline. Conclusion Urinary hydroxyproline has been in use as a marker of bone resorption, but it lacks sensitivity and specificity. It is a modified aminoacid that is a metabolic product of collagen breakdown.Hydroxyproline may be released either free or with fragments of the collagen molecule attached during bone resorption, and it is also liberated by the breakdown of complement and nonskeletal collagen.

  8. Diurnal changes of biochemical metabolic markers in healthy young males

    DEFF Research Database (Denmark)

    Sennels, Henriette P; Jørgensen, Henrik L; Fahrenkrug, Jan

    2015-01-01

    .06 mmol/L) did not show significant oscillations. CONCLUSIONS: When diagnosing and monitoring metabolic disorders compensation for the 24-h variation of the biochemical metabolic markers is needed especially C-peptide, triglyceride and glucose. Furthermore, the stable HbA1c level through 24 h makes......BACKGROUND: To examine whether time of the day has an effect on the circulating levels of metabolism parameters. METHODS: Venous blood samples were obtained under standardized conditions from 24 healthy young men every third hour through 24 hours. The metabolic markers and melatonin were examined...

  9. Novel Biochemical Markers of Psychosocial Stress in Women

    OpenAIRE

    Marie Asberg; Ake Nygren; Rosario Leopardi; Gunnar Rylander; Ulla Peterson; Lukas Wilczek; Håkan Källmén; Mirjam Ekstedt; Torbjörn Akerstedt; Mats Lekander; Rolf Ekman

    2009-01-01

    BACKGROUND: Prolonged psychosocial stress is a condition assessed through self-reports. Here we aimed to identify biochemical markers for screening and early intervention in women. METHODS: Plasma concentrations of interleukin (IL) 1-alpha, IL1-beta, IL-2, IL-4, IL-6, IL-8, IL-10, interferon-gamma (INF-gamma), tumor necrosis factor-alpha (TNF-alpha), monocyte chemotactic protein-1 (MCP-1), epidermal growth factor (EGF), vascular endothelial growth factor (VEGF), thyroid stimulating hormone (T...

  10. [Bone metabolic markers and diagnosis of abnormal bone and calcium metabolism].

    Science.gov (United States)

    Fukunaga, M; Sone, T

    2001-07-01

    Bone metabolic markers increase in blood or urine, when bone formation or bone resorption accelerates. Reference values of bone metabolic markers are determined in male or female, and in pre- or post-menopause, respectively. Values of bone metabolic markers in most patients with primary osteoporosis were distributed within a reference value, mean+/-1.96 SD. When measured values exceeded a reference values, we should survey a possibility of abnormal calcium or bone metabolism such as primary hyperparathyroidism, renal osteodystrophy, hyperthyroidism and Paget's disease of bone or bone metastasis associated with malignant tumor. PMID:15775589

  11. A coupled mechano-biochemical model for bone adaptation

    Czech Academy of Sciences Publication Activity Database

    Klika, Václav; Pérez, M. A.; García-Aznar, J. M.; Maršík, F.; Doblaré, M.

    2014-01-01

    Roč. 69, 6-7 (2014), s. 1383-1429. ISSN 0303-6812 Institutional support: RVO:61388998 Keywords : mechano-biochemical model * bone remodelling * BMU Subject RIV: BJ - Thermodynamics Impact factor: 1.846, year: 2014 http://link.springer.com/article/10.1007%2Fs00285-013-0736-9

  12. [Biochemical markers for acute and chronic alcohol consumption].

    Science.gov (United States)

    Geppert, Bogna; Tezyk, Artur; Zaba, Czesław

    2012-01-01

    In spite of the fact, that ethyl alcohol is a legal and socially accepted recreational drug its abuse may cause numerous problems for the individual and society. Casualties of car accidents caused by drunk drivers, aggressive behavior, family problems and effective less work are the main problems connected with alcohol abuse. The easiest and most effective way of proving recent alcohol consumption is confirming its presence in biological samples taken from the individual. However, the main disadvantage of this method is a short window detection for ethanol, because of its high speed of elimination process. Nowadays, in order to prevent and have a better control of alcohol abuse, markers that could provide a better view of short and long term ethanol consumption are in frequent use. Ethyl alcohol present in the body cause many qualitative and quantitative disturbances in biochemical metabolites that could be used as markers of its consumption. In practice markers of ethanol consumption are usually divided into acute (tests confirm single alcohol intake) and chronic (confirm long term alcohol consumption or lack of teetotalism). Markers of ethanol consumption are valuable alternative and complementation to customary examinations performed in medical practice and forensic medicine. PMID:23421117

  13. Correlations among biochemical markers of bone turnover,bone speed of sound and postnatal age in early infancy%婴儿早期骨代谢生化指标与声波速度值和出生后年龄间的关系

    Institute of Scientific and Technical Information of China (English)

    廖祥鹏; 张立; 卫雅蓉; 张伟利; 何稼敏; 孙建华; 黄萍

    2009-01-01

    目的 探讨婴儿早期骨代谢生化指标与声波速度值和出生后年龄间的关系.方法 采用骨定量超声(QUS)仪对167例出生3月内的婴儿进行胫骨声波速度(SOS)测量.其中包括53例早产儿(胎龄:32.6±2.7周)和114例足月儿(胎龄:39.1±1.2周);同时在部分婴儿中测量血钙、磷、碱性磷酸酶(ALP)和骨碱性磷酸酶(BALP).结果 ①早产儿和足月儿的血钙、磷、ALP和BALP值之间均差异无显著性.②婴儿骨SOS值与ALP呈显著负相关(n=167,r=-0.139,P=0.036)、与BALP也显著负相关(n=32,r=-0.410,P=0.010);SOS值与血钙、血磷及血钙磷乘积无显著性相关.在早产儿中,ALP和BALP与日龄均显著相关,相关系数r分别为0.286(n=53,P=0.019)和0.946(n=7,P=0.001);在足月儿中未发现显著相关性.血磷与日龄呈显著负相关(n=24,r=-0.509,P=0.005).③ALP与BALP高度相关(n=32,r=0.958,P=0.001),BALP占ALP活力的47.3%.早产儿在出生时BALP和Ⅰ型胶原羧基端肽(IcTP)显著正相关(n=36,r=0.768,P=0.001).结论 定量超声技术测量SOS有助于我们评估婴儿早期骨状况;在此横向研究中我们发现骨SOS与骨代谢生化指标之间存在相关性,然而,二者间的纵向关系有待于进一步研究.%Objective To examine the correlations among biochemical markers of bone turnover,bone speed of sound and postnatal age in early infancy. Materials and methods: A quantitative ultrasound bone sonometer was used to measure the bone speed of sound (SOS) of the tibia in 167 infants within 3 months of birth, including 53 preterm infants (gestational age 32.6±2.7 weeks) and 114 full-term infants (gestational age 39.1±1.2 weeks). Serum calcium, phosphorus, bone alkaline phosphatase (ALP), bone alkaline phosphatase (BALP) were examined at the same time among some of them. Results: 1) There were no significant differences of serum calcium, phosphorus, ALP and BALP between preterm infants and full-term infants. 2) There were significantly inverse

  14. Pegvisomant-induced serum insulin-like growth factor-I normalization in patients with acromegaly returns elevated markers of bone turnover to normal

    DEFF Research Database (Denmark)

    Parkinson, C; Kassem, M; Heickendorff, Lene;

    2003-01-01

    Active acromegaly is associated with increased biochemical markers of bone turnover. Pegvisomant is a GH receptor antagonist that normalizes serum IGF-I in 97% of patients with active acromegaly. We evaluated the effects of pegvisomant-induced serum IGF-I normalization on biochemical markers of b...

  15. CORD SERUM FERRITIN AS BIOCHEMICAL MARKER IN IRON DEFICIENCY ANEMIA

    Directory of Open Access Journals (Sweden)

    Sherin

    2014-07-01

    Full Text Available Iron deficiency anemia is by far the most frequent type of anemia seen in pregnancy, accounting for 90% or more of all cases. Iron deficiency anemia has adverse consequences on infant development. Therefore maternal anemia should be prevented and treated. Serum ferritin is the single best non-invasive test and is a very useful and reliable index of iron stores especially during pregnancy, with low levels indicating iron deficiency. While infants born to anemic mother are themselves not anemic, they do not suffer from low iron stores. The main aim of the study is to establish cord serum ferritin as a biochemical marker in iron deficiency anemia. The specific objectives of this study is to estimate cord and maternal serum ferritin in the last trimester of pregnancy and to correlate it with hematological parameters. Cord serum ferritin levels were normal in the patients under study, even when the maternal serum ferritin levels were decreased. The mean level of cord serum ferritin was 134.06ng/ml and maternal serum ferritin was 41.65ng/ml and was statistically significant. The hematological parameters like hemoglobin, hematocrit, MCV and MCHC were also decreased in the patients with low serum ferritin and were found to be statistically significant. Hence estimation of cord serum ferritin can be used as a biochemical marker to assess iron deficiency in the early stages itself and thereby neurodevelopmental complications in children can be prevented.

  16. BONE MARKERS IN MONITORING OF ANTIRESORPTIVE THERAPY IN POSTMENOPAUSAL OSTEOPOROSIS PATIENTS

    Directory of Open Access Journals (Sweden)

    Tanja Džopalić

    2015-09-01

    Full Text Available The aim of this work was to study the effect of two modalities of antiosteoporotic therapy in postmenopausal women at the level of biochemical markers of bone turnover such as bone specific alkaline phosphatase (BALP and deoxypiridinoline (Dpd as well as bone mineral density (BMD. The study included 87 patients with postmenopausal osteoporosis (OP. Group A consisted of 48 patients treated with alendronate (AL, whereas group B included 39 patients treated with hormone replacement therapy (HRT. BMD was measured by Lunar DPX 2000 device, on the lumbar spine and the femur, and bone markers (BM were measured by commercial ELISA assays. There was a statistically significant decrease in the levels of BALP and Dpd after 6 weeks and 8 months of both types of therapy compared to the level of these markers before therapy. There was a statistically significant increase of BMD on both locations after 8 months of both therapies. In addition, there was a statistically significantly higher degree of changes of Dpd values in the group treated with AL than in the group treated with HRT. On the other hand, the changes in the level of BALP were significantly higher in the group treated with HRT. We concluded that the early effect of the two studied antiosteoporotic medications can be monitored by changes in the levels of BM. Dpd as bone resorption marker proved to be a better indicator of the efficiency of applied medications compared to bone formation markers such as BALP.

  17. Study on de novo collagen biosynthesis and degradation markers of bone

    International Nuclear Information System (INIS)

    This investigation was carried out to study the performance of de novo biochemical markers of serum pro collagen type-1 amino terminal extension (PINP), as a marker of collagen biosynthesis, and urinary collagen crosslink free deoxypyridinoline (DPD) as a marker of collagen degradation. Moreover, urinary calcium C Ca) and inorganic phosphorus (P), as markers of bone demineralization, in addition to urinary creatinine (Cr), to reflect status of renal function, were also studied in order to assess the activity of bone turnover in osteoporotic (OST), postmenopausal (POST), peri menopausal(PERI), premenopausal (PRE) women and also in young adult (YON) ones. The obtained results showed that urinary creatinine levels were within the normal ranges in all women even in the elderly osteoporotic and postmenopausal women. Serum PINP did not reflect osteoblastic activity. Urinary DPD proved to be a good marker in monitoring the postmenopausal bone resorption and urinary Ca was a reliable marker for bone loss in osteoporosis and bone turnover in the postmenopausal status

  18. A marker chromosome in post-transplant bone marrow

    OpenAIRE

    Morsberger, Laura; Powell, Kerry; Ning, Yi

    2016-01-01

    Detection of small supernumerary marker chromosomes in karyotype analysis represents a diagnostic challenge. While such markers are usually detected during cytogenetic studies of constitutional chromosome abnormalities, they have also been found in specimens submitted from patients with acquired malignancies. We report here the detection of a marker chromosome in a bone marrow specimen from a patient who received a bone marrow transplantation. We discuss the importance of proper characterizat...

  19. Prediction of the preeclampsia: a view of biochemical markers

    Directory of Open Access Journals (Sweden)

    Mehmet Sühha Bostancı

    2013-10-01

    Full Text Available Preeclampsia is a diverse, multiorgan group of related disease processes that occurs in up to 5%-8% of pregnancies after 20 weeks’ gestation and it is one of the leading causes of maternal and fetal morbidity and mortality. Many molecular mechanisms are contributed to the pathogenesis of preeclampsia. Although it is unknown whether the mechanisms act independently or have synergistic effects. This review describes review of primary papers investigating blood based biomarker such as PAP-A, Inhibin A, sFlt1, and PP13 in general and first trimester biochemical markers and combinations of them specifically for preeclampsia.http://dx.doi.org/10.7175/rhc.v4i4.699

  20. [Cardiorenal syndrome: the role of new biochemical markers].

    Science.gov (United States)

    Vernuccio, Federica; Grutta, Giuseppe; Ferrara, Filippo; Novo, Giuseppina; Novo, Salvatore

    2012-12-01

    Cardiorenal syndrome is a pathophysiological heart and kidney disorder, in which acute or chronic dysfunction of one organ induces a damage in the other. It's a syndrome more and more often encountered in clinical practice and this implies the need to recognize the syndrome through biochemical markers with a good sensitivity and specificity, since its earliest stages in order to optimize therapy. In addition to widely validated biomarkers, such as BNP, pro BNP, creatinine, GFR and cystatin C, other promising molecules are available, like NGAL (neutrophil gelatinase-associated lipocalin, KIM-1 (kidney injury molecule-1), MCP-1 (monocyte chemotactic peptide), Netrin-1, interleuchin 18 and NAG (N-acetyl-β-glucosa-minidase). The role of these emerging biomarkers is still not completely clarified: hence the need of new clinical trials. PMID:23258238

  1. Dietary intakes and some biochemical markers in hemodialysis patients

    Directory of Open Access Journals (Sweden)

    Emine Yassibas

    2016-03-01

    Full Text Available Purpose: Intake of energy and some nutrients is frequently inadequate in dialysis patients because of eating and appetite disorders due to uremic syndrome. Inadequate energy and protein intake cause to malnutrition. Anthropometric measurements, biochemical markers and dietary intake records have great importance in determining the nutritional status of hemodialysis (HD patients. Therefore this study was planned to determination of daily energy, nutrient intake and some biochemical markers of adult hemodialysis patients. Method and Material:  A hundred and thirty six (male = 73, female = 63 clinically stable HD patients were enrolled in this study. All patients were taken 24-hour dietary recall. The daily energy and nutrient intakes of patients were calculated by food consumption records and anthropometric measurements were taken. Results: The mean age was found 45.5±13.51 years. The ratio of patients with body mass index (BMI below 18.5 kg/m2 was 7.4% and 25 kg/m2 or upper was 16.9%. Blood hemoglobin, hematocrit, albumin and total protein levels were below the normal levels. The daily dietary energy and protein intakes were found under the recommended level in the study period. A significant positive correlation was found between daily protein intake and serum albumin levels (r=0.210, p=0.014, daily protein intake and serum total protein levels (r=0.201, p=0.019, daily energy intake and serum total protein levels (r=0.178, p=0.039. Conclusions: HD patients often have low protein and energy intakes and most of them suffer from malnutrition. Therefore nutritional status of patients should be evaluated and periodically nutrition education should be given for improving eating habits and increasing dietary compliance is recommended.

  2. Novel biochemical markers of psychosocial stress in women.

    Directory of Open Access Journals (Sweden)

    Marie Asberg

    Full Text Available BACKGROUND: Prolonged psychosocial stress is a condition assessed through self-reports. Here we aimed to identify biochemical markers for screening and early intervention in women. METHODS: Plasma concentrations of interleukin (IL 1-alpha, IL1-beta, IL-2, IL-4, IL-6, IL-8, IL-10, interferon-gamma (INF-gamma, tumor necrosis factor-alpha (TNF-alpha, monocyte chemotactic protein-1 (MCP-1, epidermal growth factor (EGF, vascular endothelial growth factor (VEGF, thyroid stimulating hormone (TSH, total tri-iodothyronine (TT3, total thyroxine (TT4, prolactin, and testosterone were measured in: 195 women on long-term sick-leave for a stress-related affective disorder, 45 women at risk for professional burnout, and 84 healthy women. RESULTS: We found significantly increased levels of MCP-1, VEGF and EGF in women exposed to prolonged psychosocial stress. Statistical analysis indicates that they independently associate with a significant risk for being classified as ill. CONCLUSIONS: MCP-1, EGF, and VEGF are potential markers for screening and early intervention in women under prolonged psychosocial stress.

  3. Biochemical markers of trisomy 21 in amniotic fluid.

    Science.gov (United States)

    Spencer, K; Muller, F; Aitken, D A

    1997-01-01

    In a study of amniotic fluid from 91 Down's syndrome cases and 240 controls, we have shown that the median values of four biochemical markers (AFP, total hCG, free beta hCG, and unconjugated oestriol) in the amniotic fluid of pregnancies affected by Down's syndrome on the whole reflect those observed in the maternal serum of affected cases. The median MOM for AFP was lower than average (0.56), as was that for unconjugated oestriol (0.55), whilst those for total hCG (1.82) and free beta hCG (2.10) were increased on average. The width of the distribution of marker levels in amniotic fluid is similar to that in serum for free beta hCG and total hCG but between 1.5 and 2 times wider for unconjugated oestriol and AFP. Analysis of data by fetal sex showed a significantly higher median MOM in female control cases compared with male controls for the analytes free beta hCG, total hCG, and unconjugated oestriol, but not for AFP. Amongst the Down's syndrome cases, this trend was not statistically significant and we cannot confirm a previous study which reported that elevated levels of amniotic fluid total and free beta hCG were associated only with female fetuses. PMID:9021826

  4. Development of combining bone scintigraphy and tumor markers in the diagnosis of bone metastases

    International Nuclear Information System (INIS)

    Bone is one of the most common metastatic sites for advanced cancers. The skeletal-related events caused by bone metastases could have a significant influence on patient's clinical outcome and quality of life. Currently, bone scintigraphy is the first choice for detecting bone metastases. Although the sensitivity is high, the specificity of bone scintigraphy is still very low. It has been reported that by combining bone scintigraphy and tumor markers, the specificity can be significantly increased. Meantime, the sensitivity and accuracy of bone scintigraphy in diagnosis of bone metastases can be improved. We reviewed the literatures in the recent years to evaluate the potential value of combination with bone scintigraphy and tumor markers in the diagnoses of bone metastases. (authors)

  5. Identification of biological/biochemical marker(s) for preterm delivery

    DEFF Research Database (Denmark)

    Thorsen, Poul; Schendel, Diana; Deshpande, Anjali D.;

    2001-01-01

    controls drawn from the ongoing Danish National Birth Cohort study of 100 000 pregnant women enrolled during 1997-2001. The second study will provide the opportunity to refine and retest hypotheses from the first study, as well as to explore new hypotheses. Our preliminary work suggests that a single...... predictive marker effectively accounting for a large proportion of PTD is unlikely to be found. Rather, a search for multiple markers indicative of the multifactorial aetiology of PTD is likely to be more successful. Knowledge gained from the proposed studies will be implemented in a third, clinical...... intervention study against PTD. The first phase of the clinical intervention study will be to establish a risk-assessment model based on the "best" combination of biological/biochemical measures and other factors associated with PTD in order to identify pregnant women at very high risk of PTD. The second phase...

  6. Exposure to cadmium and persistent organochlorine pollutants and its association with bone mineral density and markers of bone metabolism on postmenopausal women

    International Nuclear Information System (INIS)

    Environmental contaminants such as cadmium and persistent organochlorine pollutants have been proposed as risk factors of osteoporosis, and women may be at an increased risk. To assess associations between exposure to cadmium and two different POPs (2,2',4,4',5,5'-hexachlorobiphenyl CB-153, 1,1-dichloro-2,2-bis(p-chlorophenyl)-ethylene p,p'-DDE), on one hand, and bone effects, on the other, in a population-based study among postmenopausal (60-70 years) Swedish women with biobanked blood samples. The study included 908 women and was designed to have a large contrast of bone mineral densities, measured with a single photon absorptiometry technique in the non-dominant forearm. Biochemical markers related to bone metabolism were analyzed in serum. Exposure assessment was based on cadmium concentrations in erythrocytes and serum concentrations of CB-153 and p,p'-DDE. Cadmium was negatively associated with bone mineral density and parathyroid hormone, positively with the marker of bone resorption. However, this association disappeared after adjustment for smoking. The major DDT metabolite (p,p'-DDE) was positively associated with bone mineral density, an association which remained after adjustment for confounders, but the effect was weak. There was no evidence that the estrogenic congener (CB-153) was associated with any of the bone markers. In conclusion, no convincing associations were observed between cadmium and POPs, on one hand, and bone metabolism markers and BMD, on the other.

  7. Effect of simvastatin on bone markers in osteopenic women: a placebo-controlled, dose-ranging trial [ISRCTN85429598

    Directory of Open Access Journals (Sweden)

    Morse Megan

    2002-02-01

    Full Text Available Abstract Background Hydroxymethylglutaryl coenzyme A reductase inhibitors increase new bone formation in vitro and in rodents. Results of epidemiologic analyses evaluating the association between use of these cholesterol-lowering drugs, bone mineral density and fracture have been mixed. Methods Women (n = 24 with osteopenia, assessed by broad band ultrasound attenuation, were randomized to simvastatin 20 mg, 40 mg or identical-appearing placebo for 12 weeks. Fasting lipid profiles and biochemical markers of bone formation (bone-specific alkaline phosphatase and resorption (N-telopeptides and C-terminal propeptide of type 1 collagen were measured at baseline, 6 and 12 weeks. Results Plasma low density lipoprotein-cholesterol concentration fell 7%, 39% (p Conclusion Among osteopenic women, treatment with simvastatin for 12 weeks did not affect markers of bone formation or resorption.

  8. TUMOR MARKERS IN BONE MARROW IN PATIENTS WITH PROSTATIC CANCER

    OpenAIRE

    Iwai, Akio; Ozono, Seiichiro; Tanaka, Yozo; Nagayoshi, Junichi; Hirayama, Akihide; Kumon, Toshihiko; Joko, Masanori; Hirata, Naoya; Yoshikawa, Motoyoshi; Tabata, Shoichi; Uemura, Hirotsugu; Moriya, Akira; Kaneko, Yoshiteru; Okamoto, Shinji; Hirao, Yoshihiko

    1991-01-01

    We compared prostatic specific acid phosphatase (PAP), prostatic specificantigen (PA) and γ-seminoprotein (γ-SM) levels between bone marrow and serum for the purpose of assessing of the usefulness of these tumor markers in early detection ofbone metastasis in cases with prostatic cancer. Thirty-three patients were entered into this study. Of the patients, 20 had prostatic cancer including 11 with bone metastasis, and 13 patients had benign prostatic hypertrophy (BPH) served as controls. It se...

  9. Bone Markers Status in Graves’ disease before and after Treatment

    Directory of Open Access Journals (Sweden)

    P Tofighi

    2008-11-01

    Full Text Available "nBackground:  Bone turnover is reported to increase in favor of resorption in overt hyperthyroidism and the rate of resorp­tion is associated with the levels of thyroid hormones. As persistent increase in bone turn over is responsible for accelerated bone loss, patients with Graves' disease may have increased risk for osteoporosis. The aim of this study was to determine relationship between Graves' disease and bone markers."nMethods: The subjects of our study were 31 consecutive untreated GD patients and 37 normal volunteers who were matched on sex proportion and age ranging was diagnosed by suppressed levels of TSH and elevated level of free T3 and free T4 and positive thyroid receptor antibody. Through a clinical trial study executed in endocrinology and metabolism research center, we investigated the relationship between serum osteocalcin & cross-laps with Graves' disease and then kinds of treatment with PTU and methimazole after 8 weeks follow up."nResults: No significant differences in age and sex between patients and controls were found. Significant differences in se­rum bone markers and thyroid hormones were detected between patients and controls before therapy (p< 0.001. After treatment we found a significant improvement and returning to normal range in all serum lab tests. There were not any dif­ferences in the effect of treatment on thyroid hormones and bone markers between two groups."nConclusion: We found close relationship between Graves' disease and bone markers. So that treatment of Graves' disease can improve bone turn over. These findings indicated that early diagnosis and management of Graves' disease can be effec­tive for osteoporosis prevention in these patients.

  10. Risk factors for low bone mass in healthy young adults from North India: studies on BMD and bone turnover markers

    Directory of Open Access Journals (Sweden)

    Anita Fotedar Verma

    2015-04-01

    Full Text Available Background: Despite availability of adequate sunshine, Indian population has the highest prevalence of low bone mass and Bone Mineral Content (BMC. Risk factors for osteoporosis have been extensively studied in the west but poorly investigated in India. We studied BMD and Bone Turnover Markers (BTMs among healthy young adults. Methods: Fifty one healthy young adults (28 Males, 23 Females in the age group of 20-35 years were studied. Morphometric, biochemical parameters and BMD (whole body, spine, hip and wrist were recorded. Anthropometric measurements included height, weight, BMI and Waist/Hip Ratio (WHR. BTMs studied included - serum Bone-Specific Alkaline Phosphatase (sBAP, serum Collagen cross-linked C-Terminal telopeptide (sCTx, serum Osteocalcin (OC and human intact parathyroid hormone (hPTH using standard ELISA kits. Results: Of 51 healthy volunteers 21.57% had normal BMD, 13.73% were frankly osteoporotic and 64.70% were osteopenic. Age, weight and BMI were the best predictors of total BMD and BMC at all sites. sCTX positively correlated with Total Bone Area (TBA, BMD at Hip and Forearm. Using multiple regressions - age, weight, and BMI were significant predictors of BMD in young adults. Percentage body fat had inverse correlation with BMC, BMD and TBA. Weight and height positively correlated with BMD at femoral neck, inter-trochanter and Ward's triangle. Body weight was best predictor of BMD at femoral neck, Ward's triangle, forearm UD, forearm MID and forearm1/3. Conclusion: Majority of healthy young Indians have poor bone health as evidenced by bone markers. [Int J Res Med Sci 2015; 3(4.000: 933-939

  11. Bone mineral density and markers of bone turnover in patients with renal transplantation and regular hemodialysis

    Directory of Open Access Journals (Sweden)

    Samir M. Ibrahim,. Khalid H Abdel-Mageed, Magdi M El-Sharkawy

    2002-09-01

    Full Text Available Background: Decreased bone mineral density (BMD is a known complication for the uremic state antedating dialysis / renal transplantation (RTx. The issue of stabilized versus continued decrease of BMD especially on long-term basis, continues to be unresolved. Patients and Methods: !"#"hemodialysis (HD-#" $% " &'( &'(-group had been evaluated for metabolic bone changes by calcium homeostasis parameters (serum calcium, phosphorus, alkaline phosphatase "ALP" and vitamin D "calcitriol", markers of bone formation (bone alkaline phosphatase "BAP", osteocalcin "OC", N-terminal propeptide of collagen type I "PINP", bone resorption markers (pyridoline "PYL" and deoxypyridoline "DPYL", and intact parathyroid hormone (iPTH. Also, BMD had been assessed by dual energy x-ray absorptiometry (DEXA twice, at inclusion time and * ! "" Results: comparing both groups regarding calcium homeostasis, markers of bone turnover and iPTH showed non significant difference. However, there was a significant drop of BMD (as evidenced by T-score at follow up in the HD group, compared to stabilization of T-score for the RTx-group. Furthermore, annual T-score change was significantly more in HD-group, compared to RTx-group. Results also showed that, the best marker correlating with T-score annual changes and iPTH to be PINP. Irrespective of normal calcium homeostasis parameters, low BMD is a prevalent disorder among patients on regular HD and renal transplants.Conclusion: Follow up for * ! " %+ ,- ." % """"!to continued bone loss in patients on regular HD. This could raise recommendation for calcium and calcitriol supplementation, especially in the predialysis period, early post transplantation period, and continued guided replacement for those on maintenance HD. Serum PINP showed best correlations with BMD changes and iPTH and could be considered a reliable marker reflecting bone formation in those patients. Keywords: hemodialysis, renal transplantation, markers of bone

  12. Collagen-derived markers of bone metabolism in osteogenesis imperfecta

    DEFF Research Database (Denmark)

    Lund, A M; Hansen, M; Kollerup, Gina Birgitte; Juul, A; Teisner, Børge; Skovby, F

    1998-01-01

    )] were measured in 78 osteogenesis imperfecta (OI) patients to investigate bone metabolism in vivo and relate marker concentrations to phenotype and in vitro collagen I defects, as shown by sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE). PICP and PINP were generally low, and the...... in vivo findings correlated with in vitro results of collagen I SDS-PAGE. Bone turnover is reduced in OI children and mildly affected OI adults, whereas bone resorption is elevated in severely affected adults. These findings may prove helpful for diagnosis and decision-making regarding therapy in OI....

  13. Association between Renal Stone, Bone Mineral Density and Biochemical Parameters

    Directory of Open Access Journals (Sweden)

    Zh Maghbooli

    2007-01-01

    Results: Data showed that patients with a history of renal stones had a higher prevalence of osteoporosis (16.7% and os¬teopenia (53.3% than the subjects without a history of renal stone disease (11.2% and 35.7%, respectively. For both men and women the mean age of patients with a history of renal stone disease was significantly lower than patients with no dis¬ease history (men: with history 44.27+/-14.8, without history 50.28+/-12.3; P= 0.02 (women: with history 43.21+/-11.8, with¬out history 49.06+/-9.6; P= 0.02. Female patients with a history of renal stone disease also had a significantly lower (8.74% mean spinal bone density (P= 0.02, but there were no other significant differences in either the biochemical parame¬ters that were measured or in the hip bone density. Conclusions: These data suggest that osteoporosis may be more prevalent in those patients that have had a history of renal stone formation.

  14. Image findings and bone metabolic markers of bone involvement by oral squamous cell carcinoma

    Energy Technology Data Exchange (ETDEWEB)

    Kameta, Ayako; Tsuchimochi, Makoto; Harada, Mikiko; Katada, Tsutomu; Sasaki, Yoshihiko; Hayama, Kazuhide [Nippon Dental Univ. (Japan). School of Dentistry at Niigata

    2000-01-01

    Recently it has been reported that the circulating pyridinoline cross-linked carboxyl-terminal telopeptide of type I collagen (ICTP) and carboxyl-terminal propeptide of type I procollagen (PICP) are useful markers for detecting metastasis of malignancies to bone. Since ICTP and PICP are related to collagen metabolism, respectively breaking down and synthesizing type I collagen, elevated blood concentrations of these markers may reflect direct jaw bone destruction by oral cancer. The purpose of this study was to clarify the relationship between serum ICTP and PICP levels and bone invasion associated with oral cancer. Bone invasion was evaluated in 41 patients with oral squamous cell carcinoma (SCC) by panoramic radiography and {sup 99m}Tc-methylene diphosphonate (MDP) scintigraphy. We also assayed serum levels of parathyroid hormone-related protein (PTHrP) and compared them with concentrations of bone metabolic markers and imaging findings. There was no significant relationship between serum ICTP and PICP levels and bone invasion. However, in three of the five cases that showed remarkably high serum ICTP levels, {sup 99m}Tc-MDP uptake in the lesion was intensely increased. This suggests that serum ICTP levels may be elevated when bone metabolic changes caused by cancer involving the bone are extensive. We could find no significant correlation among serum levels of ICTP, PICP, and PTHrP. ICTP and PICP do not appear to be good indicators of direct bone invasion by oral SCC in early stages. (author)

  15. Vitamin D status of 51-75-year-old Irish women: its determinants and impact on biochemical indices of bone turnover

    DEFF Research Database (Denmark)

    Hill, T. R.; O'Brien, M. M.; Lamberg-Allardt, C.;

    2006-01-01

    Objectives: To assess the vitamin D status of Irish postmenopausal women during wintertime, and to examine its relationship with serum parathyroid hormone (PTH) and biochemical markers of bone turnover. In addition, the determinants of wintertime serum 25-hydroxyvitamin D (25OH-D) levels in these...

  16. Surrogate biochemical markers: precise measurement for strategic drug and biologics development.

    Science.gov (United States)

    Lee, J W; Hulse, J D; Colburn, W A

    1995-05-01

    More efficient drug and biologics development is necessary for future success of pharmaceutical and biotechnology companies. One way to achieve this objective is to use rationally selected surrogate markers to improve the early decision-making process. Using typical clinical chemistry methods to measure biochemical markers may not ensure adequate precision and reproducibility. In contrast, using analytical methods that meet good laboratory practices along with rational selection and validation of biochemical markers can give those who use them a competitive advantage over those who do not by providing meaningful data for earlier decision making. PMID:7657845

  17. Clinical Applications of Molecular Markers in Bone Tumors.

    Science.gov (United States)

    Hameed, Meera

    2015-11-01

    Pathologic diagnosis of primary bone neoplasms can be challenging primarily due to rarity of the disease entities, overlapping imaging and histologic findings, and lack of tumor-specific immunohistochemical stains. Although slow to evolve, in recent years there has been a rapid advance in the discovery of new and novel molecular markers in primary bone neoplasms, which has enhanced diagnostic accuracy and has shed light into their pathogenesis. Modern technological approaches such as next-generation sequencing including RNA sequencing are serving as "rapid discovery platforms" for new and novel mutations and translocations with diagnostic, prognostic, and possible therapeutic applicability. As next-generation sequencing technologies are finding their place in clinical laboratories, one could envision routine testing for mutations spanning across a gene or translocations with multiple breakpoints and partner genes. This review will focus on the clinical relevance and applicability of molecular markers in primary bone neoplasms with examples. PMID:26452209

  18. Collagen-derived markers of bone metabolism in osteogenesis imperfecta

    DEFF Research Database (Denmark)

    Lund, A M; Hansen, M; Kollerup, Gina Birgitte;

    1998-01-01

    Markers of bone formation [C-terminal and N-terminal propeptides of procollagen I (PICP, PINP), osteocalcin and alkaline phosphatase] and bone resorption [C-terminal cross-linked telopeptide of collagen I (ICTP) and hydroxypyridinium cross-links, pyridinoline (Pyr) and deoxypyridinoline (Dpyr......)] were measured in 78 osteogenesis imperfecta (OI) patients to investigate bone metabolism in vivo and relate marker concentrations to phenotype and in vitro collagen I defects, as shown by sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE). PICP and PINP were generally low, and the...... serum levels were lower in all children and adults with mild OI and a quantitative collagen defect than in patients with severe OI and a qualitative collagen I defect. ICTP, Pyr and Dpyr were generally normal or reduced, but elevated in severely affected adults with a qualitative collagen I defect. The...

  19. Hyperhomocysteinemia: a biochemical link between bone and cardiovascular system diseases?

    Science.gov (United States)

    Petramala, L; Acca, M; Francucci, C M; D'Erasmo, E

    2009-01-01

    Homocysteine (HCY) is a sulfur-containing amino acid involved in two metabolic pathways, catalized by cystathionine-B-synthase and methionine synthase, depending on vitamin (vit) B6, B12, and folate levels and enzymatic activity of methylenetetrahydrofolate. High HCY levels (HHCY) are associated with cardiovascular (CV) and bone diseases, in particular osteoporosis (OP)/hip fracture. As regards the mechanisms involved in the link between HHCY, CV diseases (CVD), and OP, it has been proposed the role of lysyl-oxydase inhibition that might interfere with collagen crosslink formation. Some studies suggested the dysregulation of the osteoprotegerin/receptor activator of nuclear factor-kappaB (RANK) ligand/RANK axis, others the involvement of oxidative stress. These mechanisms may act both on bone and CV system, but whether the common denominator is HCY itself or HCY is merely a marker, remains to be clearly established. Folate, vit B6, and B12 supplementation is associated with HCY reduction, but is unable to certainly reduce the incidence of OP/fracture and CVD, probably because, in the majority of patients, HCY is only moderately increased. PMID:19724160

  20. The Relationship Between the FRAX Tool and Bone Turnover Markers in Postmenopausal Osteoporosis

    Directory of Open Access Journals (Sweden)

    Murat Uludağ

    2013-08-01

    Full Text Available Aim: In this study, we aimed to show the correlation between the ten-year fracture risk, calculated with FRAX and bone turnover markers (BTM in a group of postmenopausal women with osteoporosis. Material and Methods: Twenty-four postmenopausal women diagnosed as osteoporosis were included. Patients were assessed for duration of menopause, secondary diseases, medication, habits of nutrition, previous fracture, and family history of fracture. Weight and height measurements were obtained. Bone mineral density (BMD was measured by dual-energy X-ray absorptiometry (DXA, with a Hologic-QDR 4500 plus device. The ten-year risk for major as well as hip fractures were calculated with the FRAX tool. Serum calcium, phosphorus, magnesium, 25-OH Vitamin D, parathormone (PTH, alkaline phosphatase (ALP, and biochemical markers of bone formation (Osteocalcin, Bone-ALP and resorption ( N-terminal collagen type 1 and C terminal collagen type 1 were determined. Results: The mean age of patients was 64.3±8.6 (46-80 years. The mean ten-year major fracture and hip fracture risks were 19.5±6.2% and 16.0±5.1%, respectively. There was a strong correlation between the duration of menopause and hip fracture risk (r: 0.878, p=0.022. There was also a strong relationship between hip fracture risk and NTX (r: 0.759, p=0.042. Conclusion: Resorption markers of bone turnover are relevant components in determining fracture risk. Rate of bone remodeling is a parameter which is not included in the FRAX tool. Since FRAX is an established tool for assessing the ten-year fracture risk, we assessed and found a correlation between hip fracture risk and NTX. Further studies, in larger groups of patients need to make clear the impact of BTM in this tool. (Turkish Journal of Osteoporosis 2013;19: 38-41

  1. A new statistical biomechanics modeling of physical and biochemical parameters of bone strength

    Energy Technology Data Exchange (ETDEWEB)

    Soboyejo, A.B.O. [Ohio State Univ., Columbus, OH (United States). Dept. of Aerospace Engineering, Applied Mechanics and Aviation; Nestor, K.E. [Ohio State Univ., Wooster, OH (United States). Dept. of Animal Sciences

    2001-07-01

    New multiparameter biomechanics models were developed in this work for the characterization of bone strength, as functions of the major physical and biochemical parameters, which can contribute to mechanical properties of bone strength. Theoretical and experimental methods had been developed to model bone strength as functions of (a) the physical parameters and (b) the biochemical parameters, The choice of any particular methodology will depend on the availability of either the physical or biochemical parameters. Experimental data of compressive strength of tibia and femur bones of broiler chickens and turkeys together with their corresponding physical and biochemical parameters were collected and used as examples in this study. These data were used to validate the theoretical principles developed in this work. Useful practical applications of the statistical biomechanics principles developed in this study, particularly in the field of bone strength enhancement in turkeys and broiler chickens are discussed. Similar medical applications to human beings are also highlighted in the discussions. (orig.)

  2. [Clinical usefulness of bone turnover markers in the management of osteoporosis].

    Science.gov (United States)

    Yano, Shozo

    2013-09-01

    Osteoporosis is a state of elevated risk for bone fracture due to depressed bone strength, which is considered to be the sum of bone mineral density and bone quality. Since a measure of bone quality has not been established, bone mineral density and bone turnover markers are the only way to evaluate bone strength. Bone turnover markers are classified into bone formation marker and resorption marker, which are correlated with the bone formation rate and resorption rate, respectively, and bone matrix-related marker. Bone is always metabolized; old tissue is resorbed by acids and proteases derived from osteoclasts, whereas new bone is produced by osteoblasts. Bone formation and resorption rates should be balanced (also called coupled). When the bone resorption rate exceeds the formation rate(uncoupled state), bone volume will be reduced. Thus, we can comprehend bone metabolism by measuring both formation and resorption markers at the same time. Increased fracture risk is recognized by elevated bone resorption markers and undercarboxylated osteocalcin, which reflects vitamin K insufficiency and bone turnover. These values and the time course give us helpful information to choose medicine suitable for the patients and to judge the responsiveness. If the value is extraordinarily high without renal failure, metabolic bone disorder or bone metastatic tumor should be considered. Bone quality may be assessed by measuring bone matrix-related markers such as homocystein and pentosidine. Since recent studies indicate that the bone is a hormone-producing organ, it is possible that glucose metabolism or an unknown mechanism could be assessed in the future. PMID:24369600

  3. Markers for Characterization of Bone Marrow Multipotential Stromal Cells

    Directory of Open Access Journals (Sweden)

    Sally A. Boxall

    2012-01-01

    Full Text Available Given the observed efficacy of culture-expanded multipotential stromal cells, also termed mesenchymal stem cells (MSCs, in the treatment of graft-versus host and cardiac disease, it remains surprising that purity and potency characterization of manufactured cell batches remains rather basic. In this paper, we will initially discuss surface and molecular markers that were proposed to serve as the indicators of the MSC potency, in terms of their proliferative potential or the ability to differentiate into desired lineages. The second part of this paper will be dedicated to a critical discussion of surface markers of uncultured (i.e., native bone marrow (BM MSCs. Although no formal consensus has yet been reached on which markers may be best suited for prospective BM MSC isolation, markers that cross-react with MSCs of animal models (such as CD271 and W8-B2/MSCA-1 may have the strongest translational value. Whereas small animal models are needed to discover the in vivo function on these markers, large animal models are required for safety and efficacy testing of isolated MSCs, particularly in the field of bone and cartilage tissue engineering.

  4. GENETIC CHARACTERIZATION OF ROMANIAN CATTLE BREEDS USING BIOCHEMICAL MARKERS

    Directory of Open Access Journals (Sweden)

    REBEDEA MARIANA

    2007-01-01

    Full Text Available The paper presents a genetic characterization of cattle breeds in Romania based onbiochemical markers in the blood and the milk. The surveyed breeds are: RomanianBlack Spotted Cattle (BNR, Romanian Spotted Cattle (BR, Romanian Brown (Band Romanian Steppe, and the markers identified are represented by some proteins,serum transferrin (Tf, serum albumins (Al, hemoglobin (Hb respectively-from theblood and beta-lactoglobulin (βLg-from the milk. In order to determine thegenotypes in the studied populations electrophoresis was used in three differentvariations, depending on the type of the protein, and the migration substrates usedwere starch and polyacrylamide. The identified genetic structures in the individualsfrom the surveyed breeds allowed their genetic characterization based on gene andgenotype frequencies, as well as using these data in establishing the identity andpaternity of the individuals in the surveyed breeds.

  5. Effects of Low-Dose Testosterone Undecanoate Treatment on Bone Mineral Density and Bone Turnover Markers in Elderly Male Osteoporosis with Low Serum Testosterone

    OpenAIRE

    Yan-Jiao Wang; Jun-Kun Zhan; Wu Huang; Yi Wang; Yuan Liu; Sha Wang; Pan Tan; Zhi-Yong Tang; You-Shuo Liu

    2013-01-01

    This prospective 2-year, single-center, randomized, placebo-controlled, open-label clinical trial was performed to evaluate the efficacy of low-dose testosterone undecanoate (TU) treatment on bone mineral density (BMD) and biochemical markers of bone turnover in elderly male osteoporosis with low serum testosterone. A total of 186 elderly male osteoporosis patients with low serum testosterone were randomized into three groups: low-dose TU (20 mg, per day), standard-dose TU (40 mg, per day), a...

  6. Tumor markers and bone scan in breast cancer patients

    International Nuclear Information System (INIS)

    Full text: The objective of this study was to compare the levels of CA15-3 and CEA with the bone scan findings in patients with breast cancer. Retrospective analysis of 76 bone scans from 61 patients diagnosed with breast cancer in the last 5 years was performed by two nuclear medicine specialists. All bone scans were performed after surgical treatment of the disease. Patients with loco-regional residual disease or distant metastases in the liver, lung or the brain were excluded from the study. According to the bone scan the patients were divided in 5 groups: normal bone scan (N), equivocal bone scan (E), single metastasis (1MS), three metastases (3MS) and multiple metastases (MMS). Tumor markers were determined within a month before or after the bone scan was performed. Cut-off value for CA 15-3 was 35 U/ml, and for CEA 3 ng/ml. Statistical analysis was performed using descriptive statistic and Kolmogorov-Smirnov test. Bone metastases were revealed in 38% of the patients referred for bone scintigraphy out of which 26% had MMS, 7.8% had single MS and 4% had 3MS. The results of 6.5% of the patients were determined as equivocal. The values of CA15-3 were higher in all patient groups compared with the group that had normal bone scan, but this difference reached statistical significance only in groups with 3MS and MMS (p < 0.01). The values of CEA were significantly higher only in patients with multiple metastases when compared with group N (p < 0.01). Values higher than cut-off value for CA 15-3 was found in 9 patients out of 42 in the group with normal bone scan. The highest value of CA 15-3 in this group was 47 U/ml. Only one patient in this group showed elevated levels for CEA. Three patients in the group with single metastasis had normal CA 15-3, while CEA was elevated only in one patient. All patients in the group with 3MS had elevated levels of CA 15-3 while CEA was in the normal range. All patients with MMS had elevated CA 15-3 values while CEA was elevated in

  7. CHANGING OF THE BIOCHEMICAL INDICES ON REGENERATION OF EXPERIMENTAL DEFECT OF THE MANDIBLE BONE

    Directory of Open Access Journals (Sweden)

    A. Borysenko

    2012-09-01

    Full Text Available Summary. The results of an experimental biochemical investigation on the influence of the proposed drug composition for the experimental mandible bone defect regeneration in rats were presented. The high efficiency and osteoregenerative properties of this paste were shown. The experimental investigations showed that the proposed drug composition exerts a considerable normalization influence upon the biochemical indicators of bone mineral metabolism, comparable to Collapan influence.

  8. Time course of changes in bone resorption markers during pamidronate therapy in breast cancer patients with bone metastases

    Directory of Open Access Journals (Sweden)

    A. D. Petrova

    2014-07-01

    Full Text Available The paper gives the results of evaluating the time course of changes in the level of bone resorption markers (S-CTx and dPir in pami- dronate-treated patients with bone metastases from breast cancer. It shows the relationship of these markers to clinical and X-ray find- ings. The markers were not found to be of high clinical significance as a means for diagnosing bone metastases and estimating treat- ment trends.

  9. Sclerostin Levels and Bone Turnover Markers in Adolescents with Anorexia Nervosa and Healthy Adolescent Girls

    OpenAIRE

    Faje, Alexander T.; Fazeli, Pouneh K.; Katzman, Debra K; Miller, Karen K.; Breggia, Anne; Rosen, Clifford J.; Mendes, Nara; Klibanski, Anne; Misra, Madhusmita

    2012-01-01

    Sclerostin, product of the SOST gene, is an important determinant of bone formation and resorption. Adolescents with anorexia nervosa (AN) have low bone density and decreased levels of bone turnover markers. However, sclerostin has not been examined in AN as a potential mediator of impaired bone metabolism. Our study objectives were to (i) assess associations of sclerostin with surrogate bone turnover markers in girls with AN and controls and (ii) examine effects of transdermal estradiol on s...

  10. The effects of a 6-month resistance training and dried plum consumption intervention on strength, body composition, blood markers of bone turnover, and inflammation in breast cancer survivors.

    Science.gov (United States)

    Simonavice, Emily; Liu, Pei-Yang; Ilich, Jasminka Z; Kim, Jeong-Su; Arjmandi, Bahram; Panton, Lynn B

    2014-06-01

    The purpose of this study was to examine the effects of resistance training (RT) and dried plum (DP) consumption on strength, body composition, blood markers of bone, and inflammation in breast cancer survivors (BCS). Twenty-three BCS (RT, n = 12; RT+DP, n = 11), aged 64 ± 7 years, were evaluated at baseline and after 6 months of intervention on the following: muscular strength (chest press and leg extension) via 1-repetition maximums (1RMs); body composition, specifically bone mineral density (BMD) by dual energy X-ray absorptiometry; biochemical markers of bone turnover (bone-specific alkaline phosphatase (BAP), tartrate resistant acid phosphatase (TRAP-5b)); and inflammation (C-reactive protein (CRP)). Target RT prescription was 2 days/week of 10 exercises, including 2 sets of 8-12 repetitions at ∼60%-80% of 1RM. RT+DP also consumed 90 g of DP daily. There were no baseline differences between groups or any group-by-time interactions for any of the variables. BCS increased upper (p effective for improving biochemical markers of bone turnover and muscular strength in BCS. A longer and higher intensity intervention may be needed to reveal the true effects of RT and DP on body composition and biochemical markers of inflammation. PMID:24869977

  11. New simulation model for bone formation markers in osteoporosis patients treated with once-weekly teriparatide

    Institute of Scientific and Technical Information of China (English)

    Sakae Tanaka; Taiji Adachi; Tatsuhiko Kuroda; Toshitaka Nakamura; Masataka Shiraki; Toshitsugu Sugimoto; Yasuhiro Takeuchi; Mitsuru Saito; John P Bilezikian

    2014-01-01

    Daily 20-mg and once-weekly 56.5-mg teriparatide (parathyroid hormone 1–34) treatment regimens increase bone mineral density (BMD) and prevent fractures, but changes in bone turnover markers differ between the two regimens. The aim of the present study was to explain changes in bone turnover markers using once-weekly teriparatide with a simulation model. Temporary increases in bone formation markers and subsequent decreases were observed during once-weekly teriparatide treatment for 72 weeks. These observations support the hypothesis that repeated weekly teriparatide administration stimulates bone remodeling, replacing old bone with new bone and leading to a reduction in the active remodeling surface. A simulation model was developed based on the iterative remodeling cycle that occurs on residual old bone. An increase in bone formation and a subsequent decrease were observed in the preliminary simulation. For each fitted time point, the predicted value was compared to the absolute values of the bone formation and resorption markers and lumbar BMD. The simulation model strongly matched actual changes in bone turnover markers and BMD. This simulation model indicates increased bone formation marker levels in the early stage and a subsequent decrease. It is therefore concluded that remodeling-based bone formation persisted during the entire treatment period with once-weekly teriparatide.

  12. Clinical usefulness of biochemical markers of liver fibrosis in patients with nonalcoholic fatty liver disease

    Institute of Scientific and Technical Information of China (English)

    Hiroshi Sakugawa; Fukunori Kinjo; Atsushi Saito; Tomofumi Nakayoshi; Kasen Kobashigawa; Tsuyoshi Yamashiro; Tatsuji Maeshiro; Satoru Miyagi; Joji Shiroma; Akiyo Toyama; Tomokuni Nakayoshi

    2005-01-01

    AIM: Nonalcoholic steatohepatitis (NASH) is a severe form of nonalcoholic fatty liver disease (NAFLD), and progresses to the end stage of liver disease. Biochemical markers of liver fibrosis are strongly associated with the degree of histological liver fibrosis in patients with chronic liver disease.However, data are few on the usefulness of markers in NAFLD patients. The aim of this study was to identify better noninvasive predictors of hepatic fibrosis, with special focus on markers of liver fibrosis, type Ⅵ collagen 7S domain and hyaluronic acid.METHODS: One hundred and twelve patients with histologically proven NAFLD were studied.RESULTS: The histological stage of NAFLD correlated with several clinical and biochemical variables, the extent of hepatic fibrosis and the markers of liver fibrosis were relatively strong associated. The best cutoff values to detect NASH were assessed by using receiver operating characteristic analysis: type Ⅵ collagen 7S domain ≥5.0 ng/mL, hyaluronic acid ≥43 ng/mL. Both markers had a high positive predictive value: type Ⅵ collagen 7S domain, 86% and hyaluronic acid,92%. Diagnostic accuracies of these markers were evaluated to detect severe fibrosis. Both markers showed high negative predictive values: type Ⅵ collagen 7S domain (≥5.0 ng/mL),84% and hyaluronic acid (≥50 ng/mL), 78%, and were significantly and independently associated with the presence of NASH or severe fibrosis by logistic regression analysis.CONCLUSION: Both markers of liver fibrosis are useful in discriminating NASH from fatty liver alone or patients with severe fibrosis from patients with non-severe fibrosis.

  13. Short-term administration of glucagon-like peptide-2. Effects on bone mineral density and markers of bone turnover in short-bowel patients with no colon

    DEFF Research Database (Denmark)

    Haderslev, K V; Jeppesen, P B; Hartmann, B;

    2002-01-01

    Glucagon-like peptide 2 (GLP-2) is a newly discovered intestinotrophic hormone. We have recently reported that a 5-week GLP-2 treatment improved the intestinal absorptive capacity of short-bowel patients with no colon. Additionally, GLP-2 treatment was associated with changes in body composition ...... that included a significant increase in total body bone mass. This article describes the effect of GLP-2 on spinal and hip bone mineral density (BMD) and biochemical markers of bone turnover in these patients.......Glucagon-like peptide 2 (GLP-2) is a newly discovered intestinotrophic hormone. We have recently reported that a 5-week GLP-2 treatment improved the intestinal absorptive capacity of short-bowel patients with no colon. Additionally, GLP-2 treatment was associated with changes in body composition...

  14. Serological and biochemical genetic markers and their associations with psychiatric disorders : a review.

    Science.gov (United States)

    Balgir, R S

    1983-10-01

    The studies pertaining to associations of serological and biochemical genetic markers (blood groups in particular and scrum proteins and enzymes in general) with the psychiatric disorders such as psychoses in general, Schizophrenia, manic-depressive psychosis including unipolar and bipolar affective disorders and neuroses have been critically examined. The reasons for inconsistent findings of various investigators have been pointed out to assist the future researchers to overcome the previous drawbacks. Implications of associations of genetic markers with the psychiatric disorders have been discussed and future areas of research suggested. PMID:21847304

  15. Biochemical Characterization of Normal Navicular Bone Flexor Surface Cartilage

    OpenAIRE

    Vits, Lucia Carolina

    2002-01-01

    Cartilage tissue specimens were obtained from the flexor surface of the navicular bone and distal radiocarpal bone articular surface (controls) from 8 horses 2 to 5 years old. Water, DNA, total collagen, total glycosaminoglycans, chondroitin sulphate, and keratan sulphate contents were determined. The results from each site were compared and the differences were analyzed by paired t-test (P < 0.05). Significant differences were determined between the water content of the navicular bon...

  16. Proline as a biochemical marker in relation to the ecology of two halophytic Juncus species

    OpenAIRE

    Boscaiu, M.; Lull, C.; Llinares, J.; Vicente, O.

    2013-01-01

    Aims Osmolytes, used for maintaining osmotic balance and as osmoprotectants , are synthesized in plants as a general, conserved response to abiotic stress, although their contribution to stress-tolerance mechanisms remains unclear. Proline, the most common osmolyte, accumulates in many plant species in parallel with increased external salinity and is considered a reliable biochemical marker of salt stress. We have measured proline levels in two halophytic, closely rel...

  17. Impact of different biochemical markers in serum of patients with benign and malignant liver diseases

    OpenAIRE

    Zakhary, Nadia I.; Mahmoud M. El-Merzabani; Nagwa M. El-Sawi; Saleh, Saleh M.; Moneer, Manar M; Ragaa H. Mohamad

    2011-01-01

    The only hope for effective treatment of liver cancer lies in early detection or screening for populations who are at high risk for developing liver cancer. This study was designed to study the levels of a collection of biochemical markers in the sera of patients suffering from hepatocellular carcinoma (HCC) and its predisposing diseases. The ultimate aim is to investigate their diagnostic impact in the early detection of HCC and discriminate from benign liver diseases. The study was carried ...

  18. HPLC-MS/MS investigation of biochemical markers for the disclosure of erythropoietin abuse in sports

    Science.gov (United States)

    Appolonova, S. A.; Dikunets, M. A.; Rodchenkov, G. M.

    2009-04-01

    The polypeptide hormone erythropoietin (EPO), which is a forbidden doping drug, was determined by high-performance liquid chromatography combined with tandem mass spectrometry (HPLC-MS/MS). The hypothesis about the influence of EPO on the asymmetric dimethylarginine (ADMA)-dimethylargininedime-thylaminohydrolase (DDAH)-NO-synthase system was verified. Changes in this system can serve as indirect biochemical markers of the presence of the forbidden EPO drug in the organism. In the test group, the concentrations of biochemical markers varied from 10 to 40 μg/ml for ADMA and symmetrical DMA (SDMA) and from 0.5 to 10 μg/ml for arginine and citrulline. A single intravenous administration of r-HuEPO (Epocrin, 2000 ME/day) for two volunteers reliably increased ADMA, SDMA, arginine, and citrulline concentrations to 40-270 μg/ml, 40-240μg/ml, 10-60 μg/ml, and 12-140 μg/ml, respectively, with respect to the reference values. The simultaneous increase in arginine, methylarginines, and citrulline contents could be an indirect marker of EPO abuse. The method is recommended for fast screening analysis.

  19. A biochemical marker for detection or irradiated pupae of the oriental fruit fly (Dacus dorsalis)

    International Nuclear Information System (INIS)

    A biochemical method for detecting a radiation sensitive protein marker in pupae of gamma irradiated larvae of the Oriental fruit fly (Dacus dorsalis) using SDS-polyacrylamide gel electrophoresis (SDS-PAGE) is presented. Third instar larvae were irradiated at 100 Gy using a 60Co dry gamma cell. SDS-PAGE protein profile analysis of pupae of the irradiated larvae revealed the absence of a specific protein band (ascribed to a gene product, Gs, of a putative radiation sensitive marker gene) in comparison to the protein profile of unirradiated control larvae. Absence of the Gs protein band from the electrophoretic gel profile was observed only in two-day-old pupae (day 3 post-irradiation) and even at a dose as low as 40 Gy. Thus, irradiation of immature (two-day-old) larvae at 100 Gy resulted in the subsequent absence of the Gs protein only after day 8 post-irradiation (three-day-old pupae), by which stage the pupae of the unirradiated larvae had already started to synthesize the Gs protein, as seen by the SDS-PAGE gel profile. The absence of this Gs protein band in the SDS-PAGE profile of pupae of the irradiated larvae could be used as a biochemical marker for establishing the efficacy or irradiation of the Oriental fruit fly. (author). 7 refs, 3 figs

  20. Recreational football improves bone mineral density and bone turnover marker profile in elderly men

    DEFF Research Database (Denmark)

    Helge, Eva Wulff; Rostgaard Andersen, Thomas; Schmidt, Jakob Friis;

    2014-01-01

    This study examined the effect of recreational football and resistance training on bone mineral density (BMD) and bone turnover markers (BTMs) in elderly men. Twenty-six healthy sedentary men (age 68.2 ± 3.2 years) were randomized into three groups: football (F; n = 9) and resistance training (R; n...... < 0.001) than at baseline, respectively. After 12 months, CTX-1 showed a main effect of 43% (P < 0.05). In R and C, BMD and BTM remained unchanged. In conclusion, 4 months of recreational football for elderly men had an osteogenic effect, which was further developed after 12 months, whereas resistance...

  1. Relationship between radiographic grading of osteoarthritis and the biochemical markers for arthritis in knee osteoarthritis

    OpenAIRE

    Takahashi, Masaaki; Naito, Kenichi; Abe, Masashi; Sawada, Tomokazu; Nagano, Akira

    2004-01-01

    The aim of this study was to investigate the relationship between the biochemical markers of arthritis and the radiographic grading of osteoarthritis (OA) in knees. Seventy-one women aged 49–85 years with knee OA were studied. Anterior–posterior knee radiographs and hand radiographs were taken in all patients. The radiographic grading of OA in the knee was performed by using the Kellgren–Lawrence criteria and the joint space width. The 71 patients with knee OA were divided into two groups: 37...

  2. Genetic Investigations Using Immuno-biochemical Markers in a Maramureş Brown Cattle Population

    Directory of Open Access Journals (Sweden)

    Nicoleta Isfan

    2011-05-01

    Full Text Available The study of the genetic markers and identifying new markers involves an increasing number of research projects in the fields of genetics of immunology, biochemical genetics, molecular genetics, quantity genetics and the genetic improvement of animals. Some studies on genes frequency determining the red cells specificity and for whey hemoglobin are approached in the present report. In this way, some blood factors, most of them belonging to B system (the most complex system in cattle have been evidenced. The lowest gene frequency was present in K factor (7%, and highest one in, O1, G’ , W and F1 (100%. In addition to basic importance on knowledge and determination of cattle population genetic structure for studied protein loci, another theme proposed to correlate hemoglobin type with some traits of economical importance: milk yield, fat and protein content, fat and protein yield. Higher performance was recorded by HbA/HbA individuals.

  3. Study on temporomandibular joint disorders by bone scintigraphy and bone metabolic markers (ICTP, PICP) in synovial fluid

    International Nuclear Information System (INIS)

    The aim of this study was to evaluate bone metabolic condition in imaging findings of temporomandibular joint disorders (TMD) using bone scintigraphy, which has a high sensitivity to bone metabolism, and two bone metabolic markers: pyridinoline cross-linked carboxy-terminal telopeptide of type I collagen (ICTP) and carboxy-terminal propeptide of type I procollagen (PICP) which influence both the formation and absorption of bone. The subjects were 92 patients (18 male, 74 female, mean age 40.3±18.2 years of age, 112 temporomandibular joints (TMJs)) with TMD who underwent bone scintigraphy using 99mTc-methylene diphosphonate sodium (MDP) and/or had their concentration of bone metabolic markers (ICTP and PICP) measured in synovial lavage fluid by a radioimmunoassay kit using competitive inhibition. Synovial lavage fluid was a mixture of synovial fluid and physiological saline, obtained by irrigation of the superior joint compartment of TMD patients. Sixteen female controls (mean age 42.7±15.7 years of age) with no symptoms of TMD, but who had other diseases and who underwent bone scintigraphy, were selected. The position and configuration of the articular disk of patients with TMD were diagnosed by MRI and/or double contrastarthrography. All patients were examined for morphological bone change of the TMJ by tomography and were evaluated using both a positive ratio and an accumulation ratio (radioactivity counts of TMJ region/radioactivity counts of neck soft tissue region) by bone scintigraphy. We obtained the following results and conclusions. All the temporomandibular joints with morphological bone change showed an increase in accumulation by bone scintigraphy. Some of the temporomandibular joints without morphological bone change also showed an increase in accumulation. There were no statistically significant differences between disk position, disk configuration and accumulation ratio. Most of the temporomandibular joints, which had an increase in accumulation

  4. Correlation of Serum Leptin Level with Bone Mineral Density and Bone Turnover Markers in Chinese Adolescent Dancers

    Institute of Scientific and Technical Information of China (English)

    LI-CHEN YANG; YAN LAN; JING HU; YAN-HUA YANG; QIAN ZHANG; JIAN-HUA PIAO

    2009-01-01

    Objective To investigate plasma leptin concentrations in adolescent female dancers and to determine whether leptin has some effects on their bone mineral density (BMD) and bone turnover markers. Methods Sixty dancers aged 15-17 years and 77 healthy controls were enrolled in the study. Bone mineral density (BMD) and body composition were detected by dual energy X-ray absorptiometry. Serum leptin concentrations were measured by radioimmunoassay (RIA). Two bone turnover markers, bone-specific alkaline phosphatase (BAP) and tartrate-resistant acid phosphatase(TRACP), were determined by ELISA. Results The dancers had a lower fat mass and a lower leptin level than the controls, while they had a relatively higher BMD of the total body and legs after adjustment for BMI and age. The levels of bone resorption and formation of markers were higher in the dancers than in the controls. Leptin was positively correlated with BMI, body weight, fat mass, and percentage of body fat. In dancers, Leptin was positively correlated with the BMD of the total body and the left leg. However, after adjustment for BMI, no correlation of serum leptin concentrations with BMD values was found in either dancers or controls. Nor correlation was found between leptin and bone turnover markers after adjustment for BMI. Conclusion The leptin profile is different between the controls and the dancers with a lower BMI and a lower fat mass. Circulating plasma leptin level depends on BMI and is not a direct determinant of BMD in Chinese adolescent dancers.

  5. Short-Term Effects of TNF Inhibitors on Bone Turnover Markers and Bone Mineral Density in Rheumatoid Arthritis.

    Science.gov (United States)

    Orsolini, Giovanni; Adami, Giovanni; Adami, Silvano; Viapiana, Ombretta; Idolazzi, Luca; Gatti, Davide; Rossini, Maurizio

    2016-06-01

    TNFα inhibitors (TNFαI) exert positive effects on disease activity in rheumatoid arthritis (RA). Bone involvement is a major determinant of functional impairment in this disease. Here we investigated the short-term effects of TNFαI therapy on bone metabolism and density. We studied 54 patients with RA starting a TNFαI biologic drug, in whom any factor known to interfere with bone metabolism was excluded or rigorously accounted for. We measured at baseline and after 6-month therapy bone turnover markers: N-propeptide of type I collagen (P1NP), and bone alkaline phosphates for bone formation and serum C-terminal telopeptide of type I collagen (CTX) for bone resorption. We also evaluated bone mineral density (BMD) at hip and lumbar by dual-energy X-ray absorptiometry. All bone markers rose significantly and these changes were not dependent on steroid dosage. A significant decrease in femoral neck BMD was also observed. These results indicate that TNFαI therapy in RA over 6 months is associated with an early increase in bone turnover and a decline in hip BMD. PMID:26887973

  6. Genetic assessment of serological and biochemical markers in Bharia tribe of Chhindwara district of Madhya Pradesh

    Directory of Open Access Journals (Sweden)

    Chaudhary Ruchira

    2010-01-01

    Full Text Available Background: The present sero-genetic study is the first of its kind to present the baseline data of Bharia tribe of Madhya Pradesh. The main aim of this study is to provide phenotype and allele-frequency data to characterize the population genetically and to fill the void on the genetic map of Madhya Pradesh. Materials and Methods: For this, blood samples from 92 unrelated healthy individuals of Bharia tribe from Chhindwara district (Tamia block were collected. Hemolysates prepared were analyzed for two serological (A1A2BO and Rh and six biochemical (adenosine deaminase, adenylate kinase locus 1, acid phosphatase locus 1, phosphoglucomutase locus 1, esterase D and glucosephosphate isomerase parameters, following the standard electrophoretic techniques. Results: The Chi-square test for goodness of fit revealed no significant deviation between the observed and expected numbers in any of the seven genetic markers, suggesting that the tribe is in genetic equilibrium. A high incidence of B allele in A1A2BO blood group and low incidence of the A1 allele, with presence of A2 in only one individual, and a low frequency of Rh(D (Rh negative allele was observed in serological markers. Also, no rare variant was observed for biochemical markers. Conclusion: Principal Component Analysis done in order to detect the genetic affinity of Bharia tribe with other populations from the adjoining states of Madhya Pradesh based on the allele frequencies, showed a close association of Bharia with Gujarat and Rajasthan. Hence, this study has been helpful in revealing the genetic structure and affinity of Bharia tribe.

  7. Physical activity and lifestyle effects on bone mineral density among young adults: sociodemographic and biochemical analysis.

    Science.gov (United States)

    Alghadir, Ahmad H; Gabr, Sami A; Al-Eisa, Einas

    2015-07-01

    [Purpose] The purpose of this study was to assess the possible role of physical activities, calcium consumption and lifestyle factors in both bone mineral density and bone metabolism indices in 350 young adult volunteers. [Subjects and Methods] All volunteers were recruited for the assessment of lifestyle behaviors and physical activity traits using validated questioners, and bone mineral density (BMD), serum osteocalcin (s-OC), bone-specific alkaline phosphatase (BAP), and calcium were estimated using dual-energy X-ray absorptiometry analysis, and immunoassay techniques. [Results] Male participants showed a significant increase in BMD along with an increase in bone metabolism markers compared with females in all groups. However, younger subjects showed a significant increase in BMD, OC, BAP, and calcium compared with older subjects. Osteoporosis was more common in older subjects linked with abnormal body mass index and waist circumference. Bone metabolism markers correlated positively with BMD, physically activity and negatively with osteoporosis in all stages. Also, moderate to higher calcium and milk intake correlated positively with higher BMD. However, low calcium and milk intake along with higher caffeine, and carbonated beverage consumption, and heavy cigarette smoking showed a negative effect on the status of bone mineral density. Stepwise regression analysis showed that life style factors including physical activity and demographic parameters explained around 58-69.8% of the bone mineral density variation in young adults especially females. [Conclusion] body mass index, physical activity, low calcium consumption, and abnormal lifestyle have role in bone mineral density and prognosis of osteoporosis in young adults. PMID:26311965

  8. [Biochemical markers and physiological tests of atherosclerosis--changes and usefulness of markers in anti-atherosclerotic therapy].

    Science.gov (United States)

    Kanoh, Yuhsaku

    2011-01-01

    As a result of the aging of the Japanese population and westernization of the diet, atherosclerotic diseases such as ischemic heart diseases and cerebrovascular disorders are now the leading causes (2nd and 3rd, respectively) of death in Japan. Furthermore, advances in medical technology have made Japanese some of the longest-lived citizens in the world, and increasing health care costs have become an object of public concern. Therefore, the prevention and treatment of atherosclerosis that causes these ischemic organ dysfunctions is indispensable. In Japan, diagnostic criteria were established for metabolic syndrome as one of the health care cost-containment policies, and the importance of controlling the blood lipid and glucose levels and blood pressure was defined in 2005. Furthermore, persons enrolled in the health insurance system aged between 40 and 74 years have been obliged to receive a specified health check for the prevention of metabolic syndrome since April 2008. The health check includes: a medical interview; anthropometry (height, body weight, BMI, and abdominal circumference); physical examination; blood pressure; and 8 laboratory tests (neutral fat, HDL-cholesterol, LDL-cholesterol, AST, ALT, gamma-GT, fasting blood glucose [or HbAlc], and urinary protein and glucose). In fact, the specified health check is becoming one of the enlightening activities concerning the maintenance and promotion of health for staff of Kitasato University Hospital. Recently, on the other hand, the mechanism in which inflammatory reactions are involved in atherosclerosis has been elucidated, and atherosclerosis is thought to be a chronic inflammatory disease. Furthermore, the advances in laboratory test methods have made the measurement of various sensitive markers for inflammation possible. In this presentation, we would like to explain the efficient application of biochemical markers and rapid physiological tests for the pathological diagnosis of atherosclerosis. We would

  9. Evalution the Effects of Raloxifene and Risedronate on Serum Biochemical Markers

    Directory of Open Access Journals (Sweden)

    Abdurrahman Yeter

    2014-12-01

    Full Text Available Objective: Osteoporosis a progressive bone disease that is characterized by a decrease in bone mass which can lead to an increased risk of fracture. Osteoporosis is still a global public health problem. In recent years, many new osteoporosis drugs have become available but none of them is totally curative. The aim of the present study was to evaluate and compare the effects of risedronate and raloxifene on bone mineral density (BMD and bone turnover markers. Materials and Methods: A total of ninety patients with postmenopausal osteoporosis were randomly divided into three groups receiving calcium-vitamin D plus raloxifene, calcium-vitamin D plus risedronate, and only calcium-vitamin D (control group. Serum osteocalcin and collagen type 1 cross-linked C-telopeptide (CTX were measured before treatment and after 3, 6, 9 and 12 months of treatment. BMD was measured by Dual-Energy X-Ray absorptiometry (DEXA before treatment and after 12 months of treatment. Results: Serum CTX levels were decreased significantly (p<0.001 in all groups from baseline to post therapy of 3 months and this decrease continued to the end of the study. Serum osteocalcin levels were decreased significantly (p<0.001 in treatment groups compared to control group. L1-L4 and femur total BMD was statistically lower in treatment groups compared to control group after 12 months of the therapy (p<0.001 and p<0.05, respectively. Conclusion: The results of the present study showed us that risedronate and raloxifene were both effective on bone mineral density and the effect of both of them to do not differ not from each other in the treatment of osteoporosis. (Turkish Journal of Osteoporosis 2014;20: 110-6

  10. Relationship between serum leptin levels and bone mineral density and bone metabolic markers in patients on hemodialysis

    Directory of Open Access Journals (Sweden)

    Farokhlagha Ahmadi

    2013-01-01

    Full Text Available Leptin is the protein product of the obesity gene, which is produced in fat tissue. It was originally thought to be involved only in the regulation of food intake and energy balance. We aimed to investigate the relationship of serum leptin levels with bone mineral density (BMD and biochemical markers of bone turnover in patients on hemodialysis (HD. This study included 72 patients (43 males and 29 females, whose mean age was 55.1 ± 11.4 years, mean body mass index was 23.13 ± 2.75 kg/m 2 and mean duration on HD was 5 ± 3.4 years. The BMD values were calculated using dual-energy X-ray absorptiometry (DEXA at the femoral neck and lumbar spine. Blood samples were taken for leptin, intact parathyroid hormone (I-PTH, bone alkaline phosphatase (BAP, calcium (Ca, phosphate (P and albumin. The leptin levels were higher in females than in males (22.3 ± 19.6 vs 20.8 ± 23, but this difference was not significant. The serum leptin level had a strong positive correlation with Ca levels in the female patients (r = 0.659 and P = 0.01 and a negative correlation with albumin levels (r = -0.461 and P = 0.01. No correlation was found with age, BMI, duration on dialysis, BMD and serum levels of PTH, BAP and P for the entire patient group or either gender separately. The serum leptin level was significantly lower in females with PTH >300 pg/mL when compared with patients with PTH = 100-300 pg/mL (86 ± 85 vs 47 ± 48 (P = 0.011.Women with BAP <300 IU/L had significantly higher serum leptin than those with BAP 300-600 IU/L (P = 0.024. Women with Ca <8.5 mg/dL had significantly lower serum leptin levels compared with those with Ca levels of 8.5-10.5 mg/dL (P = 0.011. There was no significant difference between the two genders among variables such as age, BMI, duration on dialysis, serum leptin, I-PTH, Ca, P, BAP, albumin and BMD of the femoral neck and lumbar spine.

  11. Levels of serotonin, sclerostin, bone turnover markers as well as bone density and microarchitecture in patients with high bone mass phenotype due to a mutation in Lrp5

    DEFF Research Database (Denmark)

    Nielsen, Morten Frost; Andersen, Tom E.; Gossiel, F; Hansen, S; Bollerslev, J; Van Hul, W; Eastell, R; Kassem, M; Brixen, K

    2011-01-01

    CONTEXT: Patients with an activation mutation of the Lrp5 gene exhibit high bone mass (HBM). Limited information is available regarding compartment specific changes in bone. The relationship between the phenotype and serum serotonin is not well documented. Objective: to evaluate bone, serotonin and...... bone turnover markers (BTM) in Lrp5-HBM patients. DESIGN: We studied 19 Lrp5-HBM patients (T253I) and 19 age- and sex-matched controls. DXA and HR-pQCT were used to assess BMD and bone structure. Serum serotonin, sclerostin, DKK1 and BTM were evaluated. RESULTS: Z-scores for the forearm, total hip...

  12. Response of Bone Resorption Markers to Aristolochia longa Intake by Algerian Breast Cancer Postmenopausal Women

    OpenAIRE

    Bachir Benarba; Boumedienne Meddah; Aicha Tir Touil

    2014-01-01

    Aristolochia longa is widely used in traditional medicine in Algeria to treat breast cancer. The aim of the present study was to investigate the response of bone resorption markers to A. longa intake by Algerian breast cancer postmenopausal women. According to the A. longa intake, breast cancer patients were grouped into A. longa group (Al) (n = 54) and non-A. longa group (non-Al) (n = 24). 32 women constituted the control group. Bone resorption markers (from urine) pyridinoline (PYD) and deo...

  13. Identification of a biochemical marker for endothelial dysfunction using Raman spectroscopy.

    Science.gov (United States)

    Rygula, A; Pacia, M Z; Mateuszuk, L; Kaczor, A; Kostogrys, R B; Chlopicki, S; Baranska, M

    2015-04-01

    In the present work, we propose the spectroscopic approach to identify biochemical alterations in endothelial dysfunction. The method is based on the quantification of the ratio of phenylalanine (Phe) to tyrosine (Tyr) contents in the endothelium. The synthesis of Tyr from Phe requires the presence of tetrahydrobiopterin (BH4) as a cofactor of phenylalanine hydroxylase (PAH). Limitation of BH4 availability in the endothelium is a hallmark endothelial nitric oxide synthase (eNOS) dysfunction that may also lead to PAH dysfunction and a fall in Tyr contents. Using Raman spectra, the ratio of marker bands of Tyr to Phe was calculated and the pathological state of the endothelium was detected. We provide evidence that Phe/Tyr ratio analysis by Raman spectroscopy discriminate endothelial dysfunction in ApoE/LDLR(-/-) mice as compared to control mice. PMID:25664353

  14. Biochemical marker Secalin for the selection of rust resistance in wheat breeding

    Directory of Open Access Journals (Sweden)

    Manikandan N

    2015-02-01

    Full Text Available Five Indian wheat cultivars and their hybrid with MACS 2496 were selected for the present study. They were screened for seed storage proteins Secalin by the SDS-PAGE under non-reducing conditions for the presences of sec-1 which is a characteristic feature of 1BL/1RS translocation. Total soluble proteins were also estimated in all the varieties by the Lowry’s method. Results revealed that all the hybrids possess the sec-1 band denoting the 1BL/1RS translocation and conferring the transfer of gene complex Sr31 + Lr26 + Yr9. This study reveals that Secalin can be used as a biochemical marker for the confirmations of 1B/1R translocations.

  15. [Dynamics of biochemical markers of reparative fibrosis in uncomplicated course of myocardial infarction].

    Science.gov (United States)

    Kim, L B; Putiatina, A N

    2010-01-01

    Dynamics of biochemical markers of reparative fibrosis in patients with myocardial infarction (MI) with complicated course did not differ from that in the group of patients without complications. Development of complications was associated with elevation of blood serum content of glucosaminoglycans in phase 3 of reparative fibrosis compared with group of patients without complications. This elevation was significant in the group of patients with rhythm disturbances. Statistically significant increase of total urinal oxyproline was found in patients with cardiac aneurism in phase 1 and in patients with cardiogenic shock in phase 3 of reparative fibrosis. These subject allow to speak about participation of reparative fibrosis in development of complications. Complications of myocardial infarction developed in patients aged 58 years and older. PMID:21591385

  16. Following damage, the majority of bone marrow-derived airway cells express an epithelial marker

    OpenAIRE

    MacPherson, Heather; Keir, Pamela A; Edwards, Carol J; Webb, Sheila; Dorin, Julia R.

    2006-01-01

    Adult-derived bone marrow stem cells are capable of reconstituting the haematopoietic system. However there is ongoing debate in the literature as to whether bone marrow derived cells have the ability to populate other tissues and express tissue specific markers. The airway has been an organ of major interest and was one of the first where this was demonstrated. We have previously demonstrated that the mouse airway can be repopulated by side population bone marrow transplanted cells. Here we ...

  17. Endothelin-1 As A Biochemical Marker in Asthmatic Children Using Induced Sputum Method

    International Nuclear Information System (INIS)

    Endothelin-1 is a physiological normal potent bronchoconstrictor peptide produced in the respiratory airways and increase excessively their inflammation. Endothelin-1 (Et-1) level was measured by radioimmunoassay (RIA) in saliva, sputum and plasma of thirty children suffering from mild to moderate asthma with age ranged from 6-12 years. Ten healthy children of matching age and sex were used as control group. The patients were further classified according to previous regular treatment into 21 steroid dependent and 9 non-steroid dependent. The results revealed that the saliva, sputum and plasma levels of ET-1 in asthmatic patients were significantly higher than that of control children. In both control and asthmatic children, ET-1 levels were more pronounced in the order of saliva>sputum>plasma. On the other hand, the saliva, sputum and plasma levels of ET-1 were significantly lower in steroid dependent asthmatic children than that of the non-steroid dependent ones. High levels of ET-1 in mild to moderate asthmatic children clarify the implication of this biochemical mediator marker in the pathology of the disease. The regular inhaled steroid therapy reduced the level of this mediator but did not return to the basal levels of controls, so, ET-1 antagonist may be useful in management of bronchial asthma in children. Moreover, ET-1 in sputum was more valuable biochemical indicator to monitor airway inflammation than in plasma

  18. Potential biochemical markers for selection of disease resistance in Vigna radiata

    International Nuclear Information System (INIS)

    The Vigna radiata (L.) Wilczek (Green gram), a major pulse crop is prone to damaging diseases caused by Erysiphe polygoni, Cercospora canescens and Rhizoctonia sp. Therefore, the development of multiple resistance is a major breeding objective in green gram. Resistance to powdery mildew has already been developed, however, there are no reports on the development of resistance to Cercospora in green gram. Owing to limitation of conventional screening methods, the improvement for multiple disease resistance is inadequate, in this crop. It needs an efficient and quick selection method, for screening the plant population at an early stage. It is well established that the resistant interaction, in plants, involves accumulation of antibiotic compound phytoalexin (Genestein in Vigna radiata) and induction of enzymes such as β-1,3 gulcanase and Chitinases. These compounds are not only induced by pathogens but also pathogen-derived elicitors. These biochemical compounds can be used as resistance indicative biochemical markers for screening the natural or mutagen induced genetic diversity in populations of Vigna radiata in non-destructive manner. It, however, needs a systematic study of plant defense response. This paper deals with the response of resistant and susceptible cultivars of vigna radiata to Cercospora elicitor and development of non-destructive selection method for disease resistance. (author)

  19. Handheld FRET-Aptamer Sensor for Bone Markers Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Astronauts lose significant bone mass during lengthy spaceflights. Although, no effective treatments or prophylactics have yet been defined, it is important to...

  20. Correlation of the Levels of the Bone Turnover Markers BAP and β-CTX with Bone Metastasis Progress in Lung Cancer Patients

    OpenAIRE

    Tang, Qiong; Zhao, Hui; JIA, RUI; Liu, Linlin

    2013-01-01

    Background and objective Bone metastasis is common in lung cancer patients. The β isomer of the C-terminal telopeptide of type I collagen (β-CTX) and bone-specific alkaline phosphates (BAP) are regarded as important bone turnover markers in bone resorption and formation. Thus, the aims of this study are to determine the correlation of these bone turnover markers with the extent of bone metastasis of lung cancer. Methods A total of 92 patients with bone metastasis of lung cancer from Tianjin U...

  1. Diagnosis and treatment of cancer: radiopharmaceutical biochemical markers and therapy with radionuclides and reducing agents

    International Nuclear Information System (INIS)

    The cancer is the Second cause but common of death in many countries like it USES, after the cardiac disease, similar situation in Uruguay. The cancer incidence increasing with the age . I number adult developed the illness. For it, you prove biochemical of laboratory, through their determination in the serum or in the plasma, They are very useful in the patient's care with cancer. It is so the mensuration of resulting substances of the cellular metabolism that they are overturned to the patient's sanguine torrent with a certain neoplasms, it is constituted in markers of the illness, called by it Markers Tumours. Many of these labels are useful in the neoplasmas neodiagnosis and therapy. However, in general, any of the labels of it own can not be used for all neoplasms types and for all patients with kind of disease. The most effective uses in the labels tumour have been, the pursuit of the answers to the treatment and the identification of the early recurrence

  2. Development of Raman spectral markers to assess metastatic bone in breast cancer

    Science.gov (United States)

    Ding, Hao; Nyman, Jeffry S.; Sterling, Julie A.; Perrien, Daniel S.; Mahadevan-Jansen, Anita; Bi, Xiaohong

    2014-11-01

    Bone is the most common site for breast cancer metastases. One of the major complications of bone metastasis is pathological bone fracture caused by chronic bone loss and degeneration. Current guidelines for the prediction of pathological fracture mainly rely on radiographs or computed tomography, which are limited in their ability to predict fracture risk. The present study explored the feasibility of using Raman spectroscopy to estimate pathological fracture risk by characterizing the alterations in the compositional properties of metastatic bones. Tibiae with evident bone destruction were investigated using Raman spectroscopy. The carbonation level calculated by the ratio of carbonate/phosphate ν1 significantly increased in the tumor-bearing bone at all the sampling regions at the proximal metaphysis and diaphysis, while tumor-induced elevation in mineralization and crystallinity was more pronounced in the metaphysis. Furthermore, the increased carbonation level is positively correlated to bone lesion size, indicating that this parameter could serve as a unique spectral marker for tumor progression and bone loss. With the promising advances in the development of spatially offset Raman spectroscopy for deep tissue measurement, this spectral marker can potentially be used for future noninvasive evaluation of metastatic bone and prediction of pathological fracture risk.

  3. sup(99m)Tc-EHDP scanning in Paget's disease of bone correlation with biochemical and radiological findings

    International Nuclear Information System (INIS)

    The specific aim of the study has been to search for a correlation between bone scan and biochemical parameters which reflect the increased remodeling activity of pagetic bone: serum alkaline phosphatase (SAP); total hydroxyproline excretion (OHP); acute hypocalcaemic response to calcitonin. The data demonstrate that the scintigraphic index is better correlated with SAP than with OHP, or with the acute hypocalcaemic response to calcitonin. Correlation of the modulated uptake index with SAP is also significantly higher than the correlation of the anatomical scintigraphic index with this biochemical parameter. This fact confirms the role of osteoblastic activity in 99mTc-EHDP bone uptake

  4. On the influence of soft tissue coverage in the determination of bone kinematics using skin markers.

    Science.gov (United States)

    Taylor, William R; Ehrig, Rainald M; Duda, Georg N; Schell, Hanna; Seebeck, Petra; Heller, Markus O

    2005-07-01

    Accurate measurement of underlying bone positions is important for the understanding of normal movement and function, as well as for addressing clinical musculoskeletal or post-injury problems. Non-invasive measurement techniques are limited by the analysis technique and movement of peripheral soft tissues that can introduce significant measurement errors in reproducing the kinematics of the underlying bones when using external skin markers. Reflective markers, skeletally mounted to the right hind limb of three Merino-mix sheep were measured simultaneously with markers attached to the skin of each segment, during repetitions of gait trials. The movement of the skin markers relative to the underlying bone positions was then assessed using the Point Cluster Technique (PCT), raw averaging and the Optimal Common Shape Technique (OCST), a new approach presented in this manuscript. Errors in the position of the proximal joint centre, predicted from the corresponding skin markers, were shown to be phasic and strongly associated with the amount soft tissue coverage, averaging 8.5 mm for the femur, 2.8 for the tibia and 2.0 for the metatarsus. Although the results show a better prediction of bone kinematics associated with the Optimal Common Shape Technique, these errors were large for all three assessment techniques and much greater than the differences between the various techniques. Whilst individual markers moved up to 4 mm from the optimal marker set configuration, average peak errors of up to 16, 5 and 3 mm (hip, knee and tibio-metatarsal joints respectively) were observed, suggesting that a large amount of kinematic noise is produced from the synchronous shifting of marker sets, potentially as a result of underlying muscle firing and the inertial effects of heel impact. Current techniques are therefore limited in their ability to determine the kinematics of underlying bones based on skin markers, particularly in segments with more pronounced soft tissue coverage

  5. Effects of Low-Dose Testosterone Undecanoate Treatment on Bone Mineral Density and Bone Turnover Markers in Elderly Male Osteoporosis with Low Serum Testosterone

    Directory of Open Access Journals (Sweden)

    Yan-Jiao Wang

    2013-01-01

    Full Text Available This prospective 2-year, single-center, randomized, placebo-controlled, open-label clinical trial was performed to evaluate the efficacy of low-dose testosterone undecanoate (TU treatment on bone mineral density (BMD and biochemical markers of bone turnover in elderly male osteoporosis with low serum testosterone. A total of 186 elderly male osteoporosis patients with low serum testosterone were randomized into three groups: low-dose TU (20 mg, per day, standard-dose TU (40 mg, per day, and placebo group with a 24-month followup. Since the 6th month in standard-dose TU group or since the 12th month followup in low-dose TU group and throughout the study, lumbar spine and femoral neck BMD and serum levels of free testosterone, estradiol, and bone alkaline phosphatase significantly increased. There were no significant differences between groups of low-dose TU and standard dose TU in the percentage of changes of these data since the 18th month followup and throughout the study. No side effects on prostate glands including prostate specific antigen were found. In conclusion, low-dose TU (20 mg, per day may be a cost effective and safe protocol for treating elderly male osteoporosis with low serum testosterone.

  6. Handheld FRET-Aptamer Sensor for Bone Markers Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Astronauts lose approximately 1-1.5% of their bone mass per month during space travel due to a lack of physical stress in the microgravity environment. Although, no...

  7. Changes in blood biochemical markers before, during, and after a 2-day ultramarathon

    Directory of Open Access Journals (Sweden)

    Arakawa K

    2016-04-01

    damage parameters (uric acid, creatine kinase, lactate dehydrogenase, and aspartate aminotransferase, renal function markers (creatinine and blood urea nitrogen, liver injury index (alanine aminotransferase, lipid metabolism indices (free fatty acid, reactive oxygen species and inflammation parameters (white blood cells, interleukin-6, and C-reactive protein, and energy production and catecholamines (adrenaline, noradrenaline, and dopamine. Third pattern index of a lipid metabolism marker – triglyceride – decreased during the race periods and started returning to baseline from then onward. Some hormonal markers such as insulin, leptin, and adiponectin showed unique patterns. These findings appeared informative for nonprofessional athletes to know about an optimal physical activity level, duration, and total exercise for elevating physical performance and monitoring physical/mental conditioning as well as for prevention of overtraining and physical injuries. Keywords: long-distance running, blood biochemical markers, anemia, muscle damage, lipid metabolism, inflammation

  8. Usefulness of Bone Metabolic Markers in the Diagnosis of Bone Metastasis from Lung Cancer

    OpenAIRE

    Chung, Jae Ho; Park, Moo Suk; Kim, Young Sam; Chang, Joon; Kim, Joo Hang; Kim, Sung Kyu; Kim, Se Kyu

    2005-01-01

    Bone metastasis is common in lung cancer patient and the diagnosis of bone metastasis is usually made by using imaging techniques, especially bone scintigraphy. However, the diagnostic yield from bone scintigraphy is limited. The aim of this study is to assess the clinical usefulness of urinary pyridinoline cross-linked N-telopeptides of Type I collagen (NTx), urinary deoxypyridinoline (DPD), and serum alkaline phosphatase (ALP) in the assessment of bone metastasis in patients with lung cance...

  9. A biochemical marker panel in MRI-proven hyperacute ischemic stroke-a prospective study

    Directory of Open Access Journals (Sweden)

    Knauer Carolin

    2012-03-01

    Full Text Available Abstract Background Computer tomography (CT is still the fastest and most robust technique to rule out ICH in acute stroke. However CT-sensitivity for detection of ischemic stroke in the hyperacute phase is still relatively low. Moreover the validity of pure clinical judgment is diminished by several stroke imitating diseases (mimics. The "Triage® Stroke Panel", a biochemical multimarker assay, detects Brain Natriuretic Peptide (BNP, D-Dimers (DD, Matrix-Metalloproteinase-9 (MMP-9, and S100B protein and promptly generates a Multimarkerindex of these values (MMX. This index has been licensed for diagnostic purposes as it might increase the validity of the clinical diagnosis to differentiate between stroke imitating diseases and true ischemic strokes. Our aim was to prove whether the panel is a reliable indicating device for the diagnosis of ischemic stroke in a time window of 6 h to fasten the pre- and intrahospital pathway to fibrinolysis. Methods We investigated all consecutive patients admitted to our stroke unit during a time period of 5 months. Only patients with clinical investigation, blood sample collection and MRI within six hours from symptom onset were included. Values of biochemical markers were analyzed according to the results of diffusion weighted MR-imaging. In addition MMX-values in ischemic strokes were correlated with the TOAST-criteria. For statistical analysis the SAS Analyst software was used. Correlation coefficients were analyzed and comparison tests for two or more groups were performed. Statistical significance was assumed in case of p Results In total 174 patients were included into this study (n = 100 strokes, n = 49 mimics, n = 25 transitoric ischemic attacks. In patients with ischemic strokes the mean NIHSS was 7.6 ± 6.2, while the mean DWI-lesion volume was 20.6 ml (range 186.9 to 4.2 ml. According to the MMX or the individual markers there was no statistically significant difference between the group of ischemic

  10. Impact of different biochemical markers in serum of patients with benign and malignant liver diseases

    Directory of Open Access Journals (Sweden)

    Nadia I. Zakhary

    2011-01-01

    Full Text Available The only hope for effective treatment of liver cancer lies in early detection or screening for populations who are at high risk for developing liver cancer. This study was designed to study the levels of a collection of biochemical markers in the sera of patients suffering from hepatocellular carcinoma (HCC and its predisposing diseases. The ultimate aim is to investigate their diagnostic impact in the early detection of HCC and discriminate from benign liver diseases. The study was carried out on 217 individuals divided into the following groups: Group 1: Normal controls, Group 2: Schistosomal patients (Schist, Group 3: Hepatitis B patients (HBV, Group 4: Hepatitis C patients (HCV, Group 5: Cirrhotic patients (Cirr, and Group 6: Hepatocellular carcinoma patients (HCC. The last group was further subdivided into the following subgroups: a – HCC alone; b – HCC on top of schistosomiasis; c – HCC on top of HBV; d – Hepato-cellular carcinoma on top of HCV; e – HCC on top of cirrhosis. Their sera were subjected to a quantitative determination of the tumour necrosis factor-alpha (TNF-α, epidermal growth factor and its receptor (EGF and EGFR, glutathione-S-transferase alpha (GST-α, iron, ferritin, transferrin, alpha-1-antitrypsin (α1AT and alpha-fetoprotein (αFP. The results of this study indicate that it is advisable to determine a panel of markers composed of αFP, TNF-α and GST-α to confirm diagnosis of HCC and distinguish it from other benign liver diseases.

  11. Genetic Variability among Lucerne Cultivars Based on Biochemical (SDS-PAGE) and Morphological Markers

    Science.gov (United States)

    Farshadfar, M.; Farshadfar, E.

    The present research was conducted to determine the genetic variability of 18 Lucerne cultivars, based on morphological and biochemical markers. The traits studied were plant height, tiller number, biomass, dry yield, dry yield/biomass, dry leaf/dry yield, macro and micro elements, crude protein, dry matter, crude fiber and ash percentage and SDS- PAGE in seed and leaf samples. Field experiments included 18 plots of two meter rows. Data based on morphological, chemical and SDS-PAGE markers were analyzed using SPSSWIN soft ware and the multivariate statistical procedures: cluster analysis (UPGMA), principal component. Analysis of analysis of variance and mean comparison for morphological traits reflected significant differences among genotypes. Genotype 13 and 15 had the greatest values for most traits. The Genotypic Coefficient of Variation (GCV), Phenotypic Coefficient of Variation (PCV) and Heritability (Hb) parameters for different characters raged from 12.49 to 26.58% for PCV, hence the GCV ranged from 6.84 to 18.84%. The greatest value of Hb was 0.94 for stem number. Lucerne genotypes could be classified, based on morphological traits, into four clusters and 94% of the variance among the genotypes was explained by two PCAs: Based on chemical traits they were classified into five groups and 73.492% of variance was explained by four principal components: Dry matter, protein, fiber, P, K, Na, Mg and Zn had higher variance. Genotypes based on the SDS-PAGE patterns all genotypes were classified into three clusters. The greatest genetic distance was between cultivar 10 and others, therefore they would be suitable parent in a breeding program.

  12. Immunological and Biochemical Markers in Oral Carcinogenesis: The Public Health Perspective

    Directory of Open Access Journals (Sweden)

    Sunali Khanna

    2008-12-01

    Full Text Available Oral health is an integral component of general health and well being and a basic human right. Dental public health is probably the most challenging specialty of dentistry. Because of the lack of adequate resources among other factors, many people are likely to suffer from dental diseases. Despite great improvements in the oral health status of populations across the world, the burden and impact of dental diseases are still high. This is particularly true among underprivileged groups in both developed and developing communities. Oral diseases and conditions, including oral cancer, oral manifestations of HIV/AIDS, dental trauma, craniofacial anomalies, and noma, all have broad impacts on health and well-being. Oral cancer, the sixth most common cancer worldwide continues to be most prevalent cancer related to the consumption of tobacco, alcohol and other carcinogenic products. Nevertheless, significant reduction in mortality can be achieved by advances in early diagnosis and implementation of multidisciplinary treatment programs leading to improvement of survivorship and better quality of life. The present study was designed to evaluate the immunologic and biochemical markers in oral carcinogenesis using circulating immune complexes (CIC, copper, iron, and selenium concentrations as assessment endpoints. Study results indicated an increase in CIC and copper levels, and a decrease in iron and selenium concentrations in oral cancer patients compared to controls. The implications of these findings for public health are discussed.

  13. Correlations between endogen amylin hormone and some hormonal, biochemical and bone parameters in pullets

    Directory of Open Access Journals (Sweden)

    S Guzel

    2014-12-01

    Full Text Available The objective of this study was to assess the correlations of amylin (a pancreatic polypeptide hormone with some hormonal, biochemical and bone parameters in pullets. Forty 18-week-old pullets were used. Plasma amylin, CT (calcitonin, 1,25 (OH2 vitamin D (1,25 dihydroxycholecalciferol , serum osteocalcin, glucose, ALP (alkaline phosphatase, cholesterol, and triglycerides, as well as weight, length and total volume of tibiotarsi were measured. Plasma amylin concentration was negatively correlated with serum cholesterol (p<0.05 and triglycerides (p<0.05 concentrations. Plasma amylin concentration was significantly and positively correlated with plasma calcitonin concentrations (p<0.001. Serum ALP and plasma amylin concentrations were positively correlated (p<0.01. There were no correlations between amylin hormone and other parameters. Based on these results, it is possible to conclude that endogen amylin may effect cholesterol, triglycerides, calcitonin, and ALP levels in pullets without changing some other hormonal, biochemical and bone parameters related to calcium and lipid metabolism.

  14. The Efect of Semelil (AngiparsW on Bone Resorption and Bone Formation Markers in Type 2 Diabetic Patients

    Directory of Open Access Journals (Sweden)

    Shirin Hasani-Ranjbar

    2012-01-01

    Full Text Available Background and purpose of the study: Diabetes mellitus has been recognized as a major risk factor for osteoporosis in which bone turnover is affected by different mechanisms. As the morbidity, mortality and financial cost related to osteoporosis are expected to rise in Iran in coming years, and considering the efficacy of AngiparsW for improvement of different ulcers which made it a new herbal drug in diabetic foot ulcer, there is a need toevaluate the effect of this new drug on different organs including bone resorption and bone formation markers.Methods: In this randomized, double- blind clinical trial, 61 diabetic patients were included. The subjects wererandomly divided into intervention and control groups. Subjects of intervention group received 100 mg of AngiparsW twice a day. Laboratory tests including bone resorption and bone formation markers were performed at baseline and after 3 months.Result: 31 patients in study group and 30 patients in control group finished the study. The mean age of the studypopulation and the mean disease duration was respectively 51.8 ± 6.2 and 7.5 ± 4.7 years with no significant differences between intervention and control patients. No statistically significant differences between patients and controls were observed in pyridinoline, osteocalcin, urine calcium, bone alkaline phosphatase and tumor necrosis factor (TNF-α. Only urine creatinine level significantly changed between two groups after 3 month of treatment (pvalue:0.029Conclusion: In conclusion, the findings of this study indicate that Semelil (AngiparsW had no beneficial or harmfuleffects on bone. It might be other effects of this new component on bone turnover process which need morestudies and more time to be discovered.

  15. The effect of semelil (angipars® on bone resorption and bone formation markers in type 2 diabetic patients

    Directory of Open Access Journals (Sweden)

    Hasani-Ranjbar Shirin

    2012-12-01

    Full Text Available Abstract Background and purpose of the study Diabetes mellitus has been recognized as a major risk factor for osteoporosis in which bone turnover is affected by different mechanisms. As the morbidity, mortality and financial cost related to osteoporosis are expected to rise in Iran in coming years, and considering the efficacy of Angipars® for improvement of different ulcers which made it a new herbal drug in diabetic foot ulcer, there is a need to evaluate the effect of this new drug on different organs including bone resorption and bone formation markers. Methods In this randomized, double- blind clinical trial, 61 diabetic patients were included. The subjects were randomly divided into intervention and control groups. Subjects of intervention group received 100 mg of Angipars® twice a day. Laboratory tests including bone resorption and bone formation markers were performed at baseline and after 3 months. Result 31 patients in study group and 30 patients in control group finished the study. The mean age of the study population and the mean disease duration was respectively 51.8 ± 6.2 and 7.5 ± 4.7 years with no significant differences between intervention and control patients. No statistically significant differences between patients and controls were observed in pyridinoline, osteocalcin, urine calcium, bone alkaline phosphatase and tumor necrosis factor (TNF-α. Only urine creatinine level significantly changed between two groups after 3 month of treatment (p-value: 0.029 Conclusion In conclusion, the findings of this study indicate that Semelil (Angipars® had no beneficial or harmful effects on bone. It might be other effects of this new component on bone turnover process which need more studies and more time to be discovered.

  16. Diagnostic and Screening Utility of Biochemical Markers for Osteoporosis and Osteopenia in Saudi Women

    Directory of Open Access Journals (Sweden)

    Abdullah Ali Al-Zahrany, **Nihad A. El-Nashar, **Hala A. Mohamed

    2013-07-01

    Full Text Available Background and aim of the work: Postmenopausal osteoporosis is a major health problem worldwide and in Saudi Arabia as it leads to bone fragility and increased liability for fragile fractures, particularly in neck of femur and vertebrae. The present study was designed to determine the value of different screening tests to find out the most sensitive serum and urinary markers of osteoporosis among Saudi women and to clarify the relationship between E2 deficiency and these markers in peri-menopause, early or postmenopausal women without hormonal replacement therapy.Material and methods: This study included 37 Saudi women aged 40 to 60 years. They were categorized into 3 groups according to their bone mineral density (BMD: Group I: 15 Normal control (T-score up to -1.5, Group II: 12 Osteopenic women ( T-score between –1.5 to –2.5and Group III:10 Osteoporotic women ( T-score below –2.5. For all subjects, dual energy X-ray absorptiometry (DEXA was performed. Osteocalcin (OC, alkaline phosphatase (ALP, free galactosyl hydroxylysine (Gal-Hyl, calcium (Ca, inorganic phosphorus (P and estradiol (E2 were measured in serum, whereas, deoxypyridinoline (Dpd and creatinine levels were measured in urine. Results: Simultaneously both osteopenic and osteoporotic groups showed significant decreases in BMD when compared to the controls. Osteocalcin, ALP and Gal-Hyl showed significant increase (p<0.0001 among the osteopenic and osteoporotic groups versus the control group. Significant decrease in E2 levels were obvious among the osteopenic (p<0.0001 and osteoporotic (p<0.0001 women when judged against the controls. Urinary Dpd was significantly increased in the osteopenic and osteoporotic groups (p<0.001. In osteoporotic group, significant negative correlations were observed between OC and BMD. Positive correlations were detected among the osteoporotic group between OC and ALP and between OC and Gal-Hyl. High significant negative correlations were confirmed

  17. Paradoxical Response to Mechanical Unloading in Bone Loss, Microarchitecture, and Bone Turnover Markers

    OpenAIRE

    Sun, Xiaodi; Kaiyun YANG; Wang, Chune; Cao, Sensen; Merritt, Mackenzie; Hu, Yingwei; Xu, Xin

    2015-01-01

    Background: Sclerostin, encoded by the SOST gene, has been implicated in the response to mechanical loading in bone. Some studies demonstrated that unloading leads to up-regulated SOST expression, which may induce bone loss. Purpose: Most reported studies regarding the changes caused by mechanical unloading were only based on a single site. Considering that the longitudinal bone growth leads to cells of different age with different sensitivity to unloading, we hypothesized that bone turnover ...

  18. Effect of Short-Term Maximal Exercise on Biochemical Markers of Muscle Damage, Total Antioxidant Status, and Homocysteine Levels in Football Players

    OpenAIRE

    Hammouda, Omar; Chtourou, Hamdi; Chaouachi, Anis; Chahed, Henda; Ferchichi, Salyma; Kallel, Choumous; Chamari, Karim; Souissi, Nizar

    2012-01-01

    Purpose Prolonged physical exercise results in transient elevations of biochemical markers of muscular damage. This study examined the effect of short-term maximal exercise on these markers, homocysteine levels (Hcy), and total antioxidant status (TAS) in trained subjects. Methods Eighteen male football players participated in this study. Blood samples were collected 5-min before and 3-min after a 30-s Wingate test. Results The results indicated that plasma biochemical markers of muscle injur...

  19. Isopropanolic Cimicifuga racemosa is favorable on bone markers but neutral on an osteoblastic cell line.

    Science.gov (United States)

    García-Pérez, Miguel Angel; Pineda, Begoña; Hermenegildo, Carlos; Tarín, Juan J; Cano, Antonio

    2009-04-01

    Postmenopausal women treated with an isopropanolic extract of Cimicifuga racemosa underwent a decrease in the urinary concentration of N-telopeptides, a marker of bone resorption, and an increase in alkaline phosphatase, a marker of bone formation, at the third month of therapy. Serum from treated women did not modify the activity of alkaline phosphatase or the expression of three genes, runt-related transcription factor-2 (Runx-2), alkaline phosphatase, and osteocalcin, when added to the MC3T3-E1 osteoblastic cell line. PMID:18555220

  20. Liver Stiffness Measurement and Biochemical Markers in Senegalese Chronic Hepatitis B Patients with Normal ALT and High Viral Load

    OpenAIRE

    Mbaye, Papa Saliou; Sarr, Anna; Sire, Jean-Marie; Evra, Marie-Louise; Ba, Adama; Daveiga, Jean; Diallo, Aboubakry; Fall, Fatou; Chartier, Loic; Simon, François; Vray, Muriel

    2011-01-01

    Background and Aims Despite the high prevalence of chronic hepatitis B (CHB) in Africa, few studies have been performed among African patients. We sought to evaluate liver stiffness measurement by FibroScan® (LSM) and two biochemical scores (FibroTest®, Fibrometer®) to diagnose liver fibrosis in Senegalese CHB patients with HBV plasma DNA load ≥3.2 log10 IU/mL and normal alanine aminotransferase (ALT) values. Methods LSM and liver fibrosis biochemical markers were performed on 225 consecutive...

  1. Sclerostin Levels and Bone Turnover Markers in Adolescents with Anorexia Nervosa and Healthy Adolescent Girls

    Science.gov (United States)

    Faje, Alexander T.; Fazeli, Pouneh K.; Katzman, Debra K.; Miller, Karen K.; Breggia, Anne; Rosen, Clifford J.; Mendes, Nara; Klibanski, Anne; Misra, Madhusmita

    2012-01-01

    Sclerostin, product of the SOST gene, is an important determinant of bone formation and resorption. Adolescents with anorexia nervosa (AN) have low bone density and decreased levels of bone turnover markers. However, sclerostin has not been examined in AN as a potential mediator of impaired bone metabolism. Our study objectives were to (i) assess associations of sclerostin with surrogate bone turnover markers in girls with AN and controls and (ii) examine effects of transdermal estradiol on sclerostin in AN. 69 girls (44 with AN and 25 normal-weight controls) 13–18 years old were studied at baseline. 22 AN girls were randomized to transdermal estradiol (plus cyclic medroxyprogesterone) or placebo in a double-blind study for 12 months. Sclerostin correlated positively with P1NP and CTX in controls (r = 0. 67 and 0. 53, p = 0. 0002 and 0. 005, respectively) but not in AN despite comparable levels at baseline. Changes in sclerostin over twelve months did not differ in girls randomized to estradiol or placebo. The relationship between sclerostin and bone turnover markers is disrupted in adolescent girls with AN. Despite an increase in BMD with estradiol administration in AN, estrogen does not impact sclerostin levels in this group. PMID:22728230

  2. Evaluation of bone metabolism in newborn twins using quantitative ultrasound and biochemical parameters.

    Science.gov (United States)

    Kara, Semra; Güzoğlu, Nilüfer; Göçer, Emine; Arıkan, Fatma Inci; Dilmen, Uğur; Dallar Bilge, Yıldız

    2016-03-01

    Metabolic bone disease (MBD) is one of the important complications of prematurity. Early and adequate nutritional interventions may reduce the incidence and potential complications of MBD. The present study aimed to evaluate bone metabolism in twins via biochemical parameters and quantitative ultrasound (QUS) and to compare the results between twin pairs. Moreover, twin infants were evaluated in terms of potential risk factors likely to have impact on MBD. Forty-three pairs of twins were included in the study. Serum calcium, phosphorus, magnesium, and alkaline phosphatase concentrations were assessed and bone mineral density was measured using QUS (speed of sound, SOS) at postnatal 30 d. Co-twin with the higher birth weight was assigned to Group 1 (n = 36) and the other twin was assigned to Group 2 (n = 36). Birth weight and head circumference were significantly higher in the infants of Group 1 compared with Group 2. No significant difference was found among the groups in terms of gender, history of resuscitation, length of stay in intensive care unit (ICU) or in the incubator, duration of total parenteral nutrition (TPN), type of nutrition, vitamin D use, biochemical parameters, and the SOS value. The factors likely to affect SOS, including type of pregnancy, maternal drug use, gender of infant, birth weight, head circumference at birth, gestational week, length of stay at the ICU, duration of TPN, type of nutrition, resuscitation, vitamin D use, and levels of calcium, phosphorus, magnesium, and alkaline phosphatase were entered into the model. The phosphorus level and the maternal drug use were found to be the factors that significantly reduced SOS, whereas pregnancy after assisted reproductive techniques was found to be a significant enhancing factor. PMID:25777793

  3. Data Mining Visualization to Support Biochemical Markers for Liver Fibrosis in Patients With Chronic Hepatitis C Virus

    Directory of Open Access Journals (Sweden)

    Ayman Khedr & Samir Sabry.

    2011-08-01

    Full Text Available The reference diagnostic test to detect fibrosis is liver biopsy (LB, a procedure subject to variouslimitations, including risk of patient injury and sampling error. FibroTest (FT and ActiTest (AT arebiochemical markers (noninvasive tests used in determining the level of fibrosis and the degreeof necroinflammatory activity in the liver [1]. The objective of this work is to discover thedifferences in the temporal patterns between noninvasive tests and liver biopsy by visualizationtools, which made it easier to understand the relations of the complicated rules. This Study warefocused on the major serum fibrosis markers (FT/AT. The test uses a combination of serumbiochemical markers with visualization technique to evaluate whether biochemical markers canbe used to estimate the stage of liver fibrosis and necro-inflammatory activity in the liver.

  4. Biochemical Markers for Differential Diagnosis of Stroke: A Biochemical Markers Study of S100B Protein, Neuron Spesific Enolase (NSE), Myelin Basic Protein (MBP), and Heart-Type Fatty Acid Binding Protein (H-FABP)

    OpenAIRE

    Evy Liswati; Andi Wijaya; Teguh A S Ranakusuma

    2009-01-01

    BACKGROUND: Differential diagnosis between hemorrhagic and ischemic stroke, which determine how to treat the patients, was performed by CT-Scan. CT-Scan is not always available in all Indonesian health care facility. Other alternative using biochemical markers needed to be studied. METHODS: In total of 44 stroke patients consist of 25 ischemic and 19 hemorrhagic strokes according to CTScan, participated in this study. S100B Protein, NSE, MBP and H-FABP concentration in the blood of each strok...

  5. Impact of Black seed (Nigella sativa extract on bone turnover markers in postmenopausal women with osteoporosis

    Directory of Open Access Journals (Sweden)

    N Valizadeh

    2010-01-01

    Full Text Available "n "n  "n  "nBackground and the purpose of the study: "nExperimental studies have shown that Ns (Nigella sativa seeds oil can increase bone formation and may have anabolic effects on bone loss. This study was conducted to investigate the beneficial impacts of the oil of Black seeds on bone turnover in osteoporotic postmenopausal women. "nMaterials and methods: A placebo controlled pilot study was carried out on 15 postmenopausal osteoporotic women of 48-74 years old. In addition to Calcium-D supplements (2 tablets per day all participants were randomly received Ns extract (3ml, 0.05 ml/kg/day p .o. or placebo for 3 months. In all subjects hematological tests were performed and hepatic enzymes, BUN, Cr, Ca, P and plasma bone formation and resorption markers including osteocalcin, bone alkaline phosphatase (Bone-ALP and carboxy terminal cross linked telopeptide (CTX was determined before and after 12 weeks of treatment. "nResults: Twelve participants completed the entire 12 weeks study course of which 5 and 7 women were belonged to Ns and placebo groups respectively. Women in placebo group were significantly older than women in Ns group. There were not significant differences between BMIs, BMD results and plasma levels of bone marker in two groups at the baseline and plasma levels of bone markers between Ns and placebo group at the end of 12 weeks. Alterations from baseline in bone markers levels did not differ significantly between two groups. We did not observe any side effects due to Ns therapy. "nConclusion: In this pilot study similar to the previous trial, we failed to show beneficial impact of Ns extract administration for a short time on bone turnover so we don’t suggest it for medicinal application in the osteoporosis condition. Long time duration studies with larger sample size and usage of a more tolerable dosage forms of Black seeds oil should be emphasized for further clarification of its useful anabolic effects on bone metabolism.

  6. Stanozolol Decreases Bone Turnover Markers, Increases Mineralization, and Alters Femoral Geometry in Male Rats.

    Science.gov (United States)

    Nebot, E; Aparicio, V A; Camiletti-Moirón, D; Martinez, R; Erben, R G; Kapravelou, G; Sánchez-González, C; De Teresa, C; Porres, J M; López-Jurado, M; Aranda, P; Pietschmann, P

    2016-06-01

    Stanozonol (ST) is a synthetic derivative of testosterone; it has anabolic/androgenic activity, increasing both the turnover of trabecular bone and the endocortical apposition of bone. The present study aimed to examine the effects of ST on bone status in rats by bone mineral content, markers of formation and resorption, bone density, and structural and microarchitectural parameters. Twenty male Wistar rats were randomly distributed into two experimental groups corresponding to placebo or ST administration, which consisted of weekly intramuscular injections of 10 mg/kg body weight of ST. Plasma parameters were analyzed by immunoassay. Bone mineral content was determined by spectrophotometry. Bone mineral density (BMD) and structural parameters were measured by peripheral quantitative computed tomography, and trabecular and cortical microarchitecture by micro-computed tomography. Plasma Ca, Mg, and alkaline phosphatase were higher, and urinary Ca excretion, corticosterone, and testosterone concentrations lower in the ST group. Femur Ca content was higher and P content was lower in the ST, whereas osteocalcin, aminoterminal propeptides of type I procollagen, and C-terminal telopeptides of type I collagen were lower. Total cross-sectional, trabecular, and cortical/subcortical areas were lower in the ST. No differences were observed on BMD and area parameters of the diaphysis as well as on trabecular and cortical microarchitecture. The use of ST increases bone mineralization, ash percentage, and Ca and Mg content in femur. In spite of an absence of changes in BMD, geometric metaphyseal changes were observed. We conclude that ST alters bone geometry, leads to low bone turnover, and thus may impair bone quality. PMID:26801156

  7. Application of the biochemical indexes of bone metabolism in postmenopausal women with osteoporosis

    International Nuclear Information System (INIS)

    Objective: To explore the application of new biochemical indexes of bone metabolism in the diagnosis, monitoring and therapy of postmenopausal women with osteoporosis. Methods: Fifty-six cases of postmenopausal women with type 2 diabetes complicated with osteoporosis were randomly divided into 2 groups: treatment group (28 cases) and control group (28 cases). The experimental group were treated with Fosamax 10 mg/d for 6 months and control group with placebo. Bone minernal density (BMD) of lumbar vertebrae and ilium, procollagen type I amino terminal peptide (TP1NP), Crossl procollagen type I carboxy terminal peptide (β-Crosslaps), Ca, phosphorus and ALP were tested. Results: BMD was increased in the treatment group at the lumbar spine and femoral neck by 11.23%, 17.1% (P<0.05), respectively. TP1NP and β-crosslaps were declined in treatment group, Ca, phosphorus and ALP were not differ obviously. Conclusion: The results suggested TP1NP and β-Crosslaps affiliated with BMD could discover osteoporosis, and TP1NP and β-Crosslaps were play a important role in diagnosis and therapy of osteoporosis. (authors)

  8. Bone mineral density and markers of bone turnover in patients with renal transplantation and regular hemodialysis

    OpenAIRE

    Samir M. Ibrahim,. Khalid H Abdel-Mageed, Magdi M El-Sharkawy

    2002-01-01

    Background: Decreased bone mineral density (BMD) is a known complication for the uremic state antedating dialysis / renal transplantation (RTx). The issue of stabilized versus continued decrease of BMD especially on long-term basis, continues to be unresolved. Patients and Methods: !"#"hemodialysis (HD-#" $% " &'( )&'(-group) had been evaluated for metabolic bone changes by calcium homeostasis parameters (serum calcium, phosphorus, alkaline phosphatase "ALP" and vitamin D "calcitriol"), marke...

  9. Ethyl glucuronide, a new biochemical marker for acute alcohol intake : Studies on possible causes for false-negative or false-positive results

    OpenAIRE

    Dahl, Helen

    2006-01-01

    In recent years, there has been a growing interest in various biochemical markers for detecting acute and chronic alcohol consumption. Biochemical markers for acute and chronic drinking play important roles in detecting alcohol use, abuse and dependence in hospital settings, work place settings, traffic medicine and in forensic toxicology examinations. The alcohol biomarkers can be distinguished into two main classes: 1) tests that are sensitive enough to detect a single int...

  10. Collagen cross-link metabolites in urine as markers of bone metastases in prostatic carcinoma.

    Science.gov (United States)

    Miyamoto, K K; McSherry, S A; Robins, S P; Besterman, J M; Mohler, J L

    1994-04-01

    The efficacy of radionuclide bone scans in monitoring metastatic bone activity remains controversial. Objective measurement of bone tumor burden would be useful for the evaluation of new therapies for metastatic carcinoma of the prostate. The recent discovery of the urinary excretion of pyridinoline (cross-link of mature collagen found in cartilage and bone) and deoxypyridinoline (collagen cross-link specific to bone) measured by high pressure liquid chromatography has provided sensitive specific indexes of cartilage and bone breakdown in rheumatoid arthritis, osteoporosis and metabolic bone diseases. We compared the urinary excretion of deoxypyridinoline,pyridinoline and hydroxyproline relative to urinary creatinine (nmol./mmol.creatinine) in 27 patients with benign prostatic hyperplasia (patient age 70.0 +/- 8.5 years, standard deviation), 29 with clinically confined prostate cancer (age 70.2 +/- 9.7 years), and 26 with prostate cancer and bone metastases (age 71.1 +/- 7.7 years). No diurnal variation of deoxypyridinoline or pyridinoline urinary excretion was detected in 5 patients with metastases. Urinary excretion of pyridinoline and deoxypyridinoline was significantly greater in patients with metastatic carcinoma of the prostate compared with patients with either benign prostatic hyperplasia (Mann-Whitney-Wilcoxon rank sum analysis, p r = 0.55, p r = 0.57, p r = 0.36, p = 0.08). Serial measurements of pyridinoline and deoxypyridinoline progressively increased in 3 patients with clinical progression documented by new metastatic lesions by bone scan. Measurement of pyridinoline and deoxypyridinoline excretion cannot diagnose metastatic disease. However, these markers should be evaluated further for quantitative assessment of bone metastases. PMID:7510346

  11. The effect on bone mass and bone markers of different doses of ibandronate

    DEFF Research Database (Denmark)

    Ravn, Pernille; Clemmesen, B; Riis, B J; Christiansen, C

    1996-01-01

    The present article describes the results from a phase II dose finding study of the effect of ibandronate, a new, third generation bisphosphonate, in postmenopausal osteoporosis. One hundred and eighty postmenopausal, white women, at least 10 years past a natural menopause, with osteopenia defined...... as a bone mineral density (BMD) in the distal forearm at least 1.5 SD below the premenopausal mean, entered and 141 (78%) completed a 12 months randomized, double-blind, placebo-controlled study. The women received 0.25, 0.5, 1.0, 2.5, or 5.0 mg ibandronate daily or placebo. All women received a...... increases bone mass in all skeletal regions in a dose dependent manner with 2.5 mg being the most effective dose. Ibandronate treatment reduces bone turnover to premenopausal levels and is well tolerated....

  12. Significance of bone specific alkaline phosphatase as a tumor marker in malignant bone tumor

    International Nuclear Information System (INIS)

    The relationship between total alkaline phosphatase activity and bone forming lesion is a well known fact. But alkaline phosphatase consist mainly of two portion (liver, bone). To clarify the exact activity of bone forming tissue, quantitative measurement of BALP is essential. Two finds of tests were performed for their feasibility as a laboratory test (wheat germ lectin vs electrophoresis). We analyzed 40 bony lesion and got 58 samples. Lectin method was simple, economic, with reliable resproducability. Owing to the small number of test sample, we could not identify the relationship between the disease activity and measured BALP level. Further collection of clinical sample and analysis the pattern of BALP on each clinical settings. (author). 8 refs

  13. Serum levels of parathyroid hormone and markers of bone metabolism in patients with rheumatoid arthritis. Relationship to disease activity and glucocorticoid treatment

    DEFF Research Database (Denmark)

    Jensen, Tonny Joran; Hansen, M; Madsen, J C;

    2001-01-01

    OBJECTIVE: To evaluate the influence of inflammatory activity and glucocorticoid (GC) treatment on serum parathyroid hormone (s-PTH) and bone metabolism in patients with rheumatoid arthritis (RA). Furthermore, in patients with active RA, to examine the PTH secretion and Ca2+ set point before and...... after treatment with GC. METHODS: A range of biochemical markers of bone metabolism and calcium homeostasis were measured in 95 patients with definite RA stratified into groups according to disease activity and GC treatment. In a subgroup of 12 patients with active disease, initiating slow......-acting-anti-rheumatic-drugs (SAARDs) +/- GC, the PTH secretion and calcium set point were evaluated by use of the Cica clamp technique before and after 1 month of treatment. RESULTS: S-osteocalcin, s-total alkaline phosphatase (s-TAP) and s-carboxyterminal cross-linked telopeptide of type I collagen (s-ICTP) were elevated in all...

  14. Radioautographic visualization and biochemical identification of O-phosphoserine- and O-phosphothreonine-containing phosphoproteins in mineralizing embryonic chick bone

    International Nuclear Information System (INIS)

    The authors injected NaH233PO4 into normal 14-d-old embryonic chicks and examined the long bones by both radioautography and biochemical analyses from 10 to 240 min after the injection was completed. At 30 min, determination of the radiographic grain density revealed that 33P was concentrated principally in fibroblasts, preosteoblasts, and osteoblasts. With time, there was a progressive increase in the density of silver grains located over both the osteogenic cells and the regions of uncalcified (osteoid) and calcified extracellular organic matrices. Biochemical analyses identified 33P-O-phosphoserine as the major 33P component in glutaraldehyde-treated whole demineralized bone tissue and in EDTA-soluble, nondiffusible proteins extracted from the bones, both at the same time periods that 33P-induced silver grains were visualized by radioautography. 33-P-O-phosphothreonine was also identified in experiments using a dosage of 10 mCi per embryo. The results provide the first combined direct biochemical and radioautographic identification that phosphoproteins are synthesized in bone and are located morphologically at the sites of mineralization. The data provide further evidence that phosphoproteins play a critical role in the biological calcification of vertebrate tissues

  15. Measurement of serum marker for bone metastasis (1-CTP) in hepatobiliary and pancreas malignancies

    OpenAIRE

    Nanashima, Atsushi; Takeshita, Hiroaki; Tobinaga, Syuuichi; Araki, Masato; Sumida, Yorihisa; Kunizaki, Masaki; Tanaka, Kenji; Abo, Takafumi; HIDAKA, SHIGEKAZU; Sawai, Terumitsu; Yasutake, Toru; Nagayasu, Takeshi

    2010-01-01

    Background/Aims: Pyridinoline cross-linked carboxyterminal telopeptide of type I collagen (1CTP) is a sensitive serum marker for metastatic bone carcinomas and may also be associated with invasiveness of various carcinomas. To clarify the significance of 1CTP in hepato-biliary pancreas malignancies, we examined the relationship between clinicopathological features and serum level of 1CTP. Methodology: The subjects were 75 patients who underwent surgical resections including 27 patients with l...

  16. A re-assessment of biochemical marker distributions in T21 affected and unaffected twin pregnancies in the first trimester

    DEFF Research Database (Denmark)

    Madsen, Helen Nordahl; Tørring, Niels

    biochemical markers pregnancy-associated plasma protein-A (PAPP-A) and free β-human chorionic gonadotropin (free β-hCG) in twin pregnancies relative to singleton pregnancies and establish improved screening procedure for chromosomal anomalies such as trisomy 21 in twin pregnancies. METHODS A total of 4843...... unaffected and 47 trisomy 21 affected twin pregnancies were included in the study. Chorionicity specific medians were generated for PAPP-A and free β-hCG from gestational age 8 to 14 weeks. Multiple of the median for each of the markers were calculated. Detection rates (DR) and false-positive rates (FPR....... Allowing for gestation and chorionicity, twin pregnancies affected with trisomy 21 had higher levels of free β-hCG and lower levels of PAPP-A. Adding biochemistry into the risk assessment increased the DR for fetal trisomy 21 in dizygotic twin pregnancies from 78% to 90%, and decreased the FPR from 8.0% to...

  17. Biochemical markers of type II collagen breakdown and synthesis are positioned at specific sites in human osteoarthritic knee cartilage

    DEFF Research Database (Denmark)

    Jensen, Anne-Christine Bay; Levin Andersen, Thomas; Charni-Ben Tabassi, N;

    2007-01-01

    OBJECTIVE: To investigate whether type II collagen turnover markers used for osteoarthritis (OA) activity evaluation in body fluids can be detected at the level of specific histological features of OA cartilage tissue, as well as how they relate with each other at this level. METHODS: Adjacent...... sections were obtained from full-depth cartilage biopsies from 32 OA knees. Immunohistochemistry was performed for Helix-II and CTX-II, which are type II collagen fragments originating from the triple helix and the telopeptide region, respectively, and believed to reflect distinct breakdown events, as well...... as for type IIA N propeptide (PIIANP), a biochemical marker reflecting synthesis of type IIA collagen. RESULTS: Helix-II and CTX-II were detected in areas where collagen damage was reported previously, most frequently around chondrocytes, but also frequently in regions not previously investigated...

  18. Evaluation of Some Inflammatory and Biochemical Markers in Acute Coronary Syndrome

    International Nuclear Information System (INIS)

    The term acute coronary syndrome (ACS) encompasses a range of thrombotic coronary artery diseases, including unstable angina (UA) and both ST-segment elevation (STEMI) and non-ST-segment elevation myocardial infarction (NSTEMI). Bio markers play an important role in the diagnosis of non-ST-elevation ACS (NSTE-ACS) including unstable angina and non-STEMI. Among these, cardiac troponin and creatine phosphokinase myocardial band appeared to be the most sensitive and specific markers of myocardial injury. The important role of inflammatory processes in the development and progression of atherosclerosis has been clearly established. Different circulating inflammatory bio markers indicating the instability of atherosclerotic plaque have been identified and serve as diagnostic tools for the identification of patients with unstable angina or acute myocardial infarction and to identify risk patients. The present study was carried out on twenty patients with (NSTE-ACS). The level of serum troponin I (cTnI), creatine phosphokinase-total (CPK-T), myocardial band of creatine phosphokinase (CPK-MB), pregnancy associated plasma protein-A (PAPP-A) and highly sensitive C-reactive protein (hsCRP) were determined. The results showed increase in the level of cardiac bio markers (cTnI, CPK-MB, CPK-T) and inflammatory markers (PAPP-A, hsCRP). It could be concluded that the increase in inflammatory markers correlate especially PAPP-A in NSTE-ACS with the increase of cardiac bio markers

  19. Use of monoclonal anti-actin as a megakaryocyte marker in paraffin wax embedded bone marrow biopsy specimens.

    OpenAIRE

    Boqué, C; N. Pujol-Moix; Linde, M A; Murcia, C.; C. Guanyabens; Soler, J.

    1989-01-01

    Monoclonal anti-actin was used as a marker of megakaryocytes in Zenker's fixed, paraffin wax embedded bone marrow tissue, using an immunoperoxidase staining method. Twenty bone marrow samples were studied, including controls, and different myeloproliferative and myelodysplastic syndromes. The results were compared with those obtained using factor VIII related antigen (F VIII RAg) immunolabelling. Anti-actin is as good a marker for megakaryocytes as anti-FVIIIRAg and is potentially clinically ...

  20. Biochemical Markers of Physical Exercise on Mild Cognitive Impairment and Dementia

    DEFF Research Database (Denmark)

    Jensen, Camilla Steen; Hasselbalch, Steen Gregers; Waldemar, Gunhild;

    2015-01-01

    BACKGROUND: The cognitive effects of physical exercise in patients with dementia disorders or mild cognitive impairment have been examined in various studies; however the biochemical effects of exercise from intervention studies are largely unknown. The objective of this systematic review...... is to investigate the published results on biomarkers in physical exercise intervention studies in patients with MCI or dementia. METHODS: The PubMed database was searched for studies from 1976 to February 2015. We included intervention studies investigating the effect of physical exercise activity on biomarkers...... with controls. CONCLUSION: Although few studies suggest a beneficial effect on selected biomarkers, we need more knowledge of the biochemical effect of physical exercise in dementia or MCI....

  1. Transcriptomic, biochemical and individual markers in transplanted Daphnia magna to characterize impacts in the field

    OpenAIRE

    Campos, Bruno; Malik, Amrita; Tauler, Romà; Barata, Carlos

    2014-01-01

    Daphnia magna individuals were transplanted across 12 sites from three Spanish river basins (Llobregat, Ebro, Jucar) showing different sources of pollution. Gene transcription, feeding and biochemical responses in the field were assessed and compared with those obtained in re-constituted water treatments spiked with organic eluates obtained from water samples collected at the same locations and sampling periods. Up to 166 trace contaminants were detected in water and classified by their mode ...

  2. Biochemical Markers of Physical Exercise on Mild Cognitive Impairment and Dementia: Systematic Review and Perspectives

    OpenAIRE

    Jensen, Camilla Steen; Hasselbalch, Steen Gregers; Waldemar, Gunhild; Simonsen, Anja Hviid

    2015-01-01

    Background The cognitive effects of physical exercise in patients with dementia disorders or mild cognitive impairment have been examined in various studies; however the biochemical effects of exercise from intervention studies are largely unknown. The objective of this systematic review is to investigate the published results on biomarkers in physical exercise intervention studies in patients with MCI or dementia. Methods The PubMed database was searched for studies from 1976 to F...

  3. Biochemical markers of physical exercise on Mild Cognitive Impairment and dementia; systematic review and perspectives

    OpenAIRE

    Camilla Steen Jensen; Steen Gregers Hasselbalch; Gunhild eWaldemar; Anja Hviid Simonsen

    2015-01-01

    Background: The cognitive effects of physical exercise in patients with dementia disorders or Mild Cognitive Impairment (MCI) have been examined in various studies; however the biochemical effects of exercise from intervention studies are largely unknown. The objective of this systematic review is to investigate the published results on biomarkers in physical exercise intervention studies in patients with MCI or dementia.Methods: The PubMed database was searched for studies from 1976 to Febru...

  4. Assessment of liver fibrosis by a noninvasive method of transient elastography and biochemical markers

    OpenAIRE

    Kawamoto, Masaki; Mizuguchi, Toru; Katsuramaki, Tadashi; Nagayama, Minoru; Oshima, Hideki; Kawasaki, Hiroyuki; Nobuoka, Takayuki; Kimura, Yasutoshi; Hirata, Koichi

    2006-01-01

    AIM: To assess the correlation between the fibrotic area (FA) as calculated by a digital image analysis (DIA), and to compare the diagnostic accuracy of FibroScan to the other existing Liver fibrosis (LF) markers using the receiver operating curve analysis.

  5. Irritable bowel syndrome subtypes differ in body awareness, psychological symptoms and biochemical stress markers

    Institute of Scientific and Technical Information of China (English)

    Elsa M Eriksson; Kristina I Andrén; Henry T Eriksson; Gōran K Kurlberg

    2008-01-01

    AIM:To elucidate the differences in somatic,psycho-logical and biochemical pattern between the subtypes of irritable bowel syndrome(IBS).METHODS:Eighty IBS patients,30 diarrhoea pre-dominant(D-IBS),16 constipation predominant(C-IBS)and 34 alternating IBS(A-IBS)underwent physi-otherapeutic examinations for dysfunctions in body movements and awareness and were compared to an apparently healthy control group(AHC).All groups answered questionnaires for gastrointestinal and psycho-logical symptoms.Biochemical variables were analysed in blood.RESULTS:The D-IBS group showed less body awareness,less psychological symptoms,a more normal sense of coherence and psychosocial rating as well as higher C-peptide values.C-IBS had a higher degree of body dysfunction and psychological symptoms,as well as the lowest sense of coherence compared to controls and D-IBS.They also demonstrated the most elevated prolactin levels.A-IBS had the lowest degree of body disturbance,deteriorated quality of life and affected biochemical pattern.All subtypes had higher pain scores compared to controls.In addition they all had significantly increased triglycerides and elevated morning cortisol levels,however,without statistical significance compared with the controls.CONCLUSION:IBS subtypes showed different profiles in body awareness,somatic and psychological symptoms and in biochemicaI variables.D-IBS differed compared to the other groups by Iowered body awareness,less psychological symptoms and a higher sense of coherence and elevated C-Deptide values.C-IBS and A-IBS subtypes suffered more from depression and anxiety,associated with a lower quality of life.These differences may be important and will be taken into account in our treatment of these patients.

  6. Can tumour marker assays be a guide in the prescription of bone scan for breast and lung cancers?

    International Nuclear Information System (INIS)

    Considering the current need to improve cost-effectiveness in cancer patient management, a prospective study was undertaken in order to define the optimal combination of bone scan and tumour marker assays in breast and lung cancer strategies, as has been done in the case of prostate cancer. All patients with breast or lung cancer referred to the Nuclear Medicine Department of the Grenoble Teaching Hospital between December 1995 and April 1997 were included. A blood sample was drawn in each case for marker assay (CA15-3 or CEA and CYFRA 21-1) on the same day as the bone scan. Two hundred and seventy-five patients were included: 118 with lung cancer and 157 with breast cancer. With regard to lung cancer, no information useful for guiding bone scan prescription was obtained through CEA and CYFRA 21-1 assays. For breast cancer, the results suggest that in asymptomatic patients, a CA15-3 level of less than 25 U/ml (upper normal value chosen as the threshold) is strongly predictive of a negative bone scan; by contrast, high tumour marker levels are predictive of neoplastic bone involvement. When a doubtful bone scan is obtained in a patient with breast cancer, a normal marker level makes it highly probable that bone scan abnormalities are not related to malignancy. (orig.)

  7. Can tumour marker assays be a guide in the prescription of bone scan for breast and lung cancers?

    Energy Technology Data Exchange (ETDEWEB)

    Buffaz, P.-D.; Gauchez, A.S.; Caravel, J.P.; Vuillez, J.P.; Cura, C.; Agnius-Delord, C.; Fagret, D. [Service de Medecine Nucleaire, Centre Hospitalier Universitaire de Grenoble (France)

    1999-01-01

    Considering the current need to improve cost-effectiveness in cancer patient management, a prospective study was undertaken in order to define the optimal combination of bone scan and tumour marker assays in breast and lung cancer strategies, as has been done in the case of prostate cancer. All patients with breast or lung cancer referred to the Nuclear Medicine Department of the Grenoble Teaching Hospital between December 1995 and April 1997 were included. A blood sample was drawn in each case for marker assay (CA15-3 or CEA and CYFRA 21-1) on the same day as the bone scan. Two hundred and seventy-five patients were included: 118 with lung cancer and 157 with breast cancer. With regard to lung cancer, no information useful for guiding bone scan prescription was obtained through CEA and CYFRA 21-1 assays. For breast cancer, the results suggest that in asymptomatic patients, a CA15-3 level of less than 25 U/ml (upper normal value chosen as the threshold) is strongly predictive of a negative bone scan; by contrast, high tumour marker levels are predictive of neoplastic bone involvement. When a doubtful bone scan is obtained in a patient with breast cancer, a normal marker level makes it highly probable that bone scan abnormalities are not related to malignancy. (orig.) With 3 figs., 21 refs.

  8. Associations of total, dairy, and meat protein with markers for bone turnover in healthy, prepubertal boys

    DEFF Research Database (Denmark)

    Budek, Alicja Zofia; Hoppe, Camilla; Michaelsen, Kim Fleischer;

    2007-01-01

    We previously reported that high intake of milk, but not meat, equal in protein content, increased serum insulin-like growth factor-I (sIGF-I) in prepubertal boys. sIGF-I plays a key role in bone metabolism. Therefore, the aim of this cross-sectional study was to investigate associations of total......, dairy, and meat protein intake with markers for bone turnover and sIGF-I in prepubertal, healthy boys (n ¼ 81). We measured bone turnover (enzyme-linked immunoassay) in serum osteocalcin (sOC), bone-specific alkaline phosphatase (sBAP), and C-terminal telopeptide of collagen type-I (sCTX); dietary...... intake was estimated from a 3-d weighed food record. sIGF-I and its binding protein-3 were assessed (immunoassay) in a subgroup of 56 boys. All statistical models included effects of age, BMI, and energy intake. Dairy protein was negatively associated with sOC (P ¼ 0.05) but not significantly associated...

  9. Do Biochemical Markers and Apa I Polymorphism in IGF-II Gene Play a Role in the Association of Birth Weight and Later BMI?

    Directory of Open Access Journals (Sweden)

    Unqing Wu

    2013-05-01

    Full Text Available Background: The aim of the study was to explore the mechanisms underlying the association of birth weight with later body mass index (BMI from the biochemical markers related to metabolism and the Apa I polymorphism in IGF-II gene.Methods: A total of 300 children were selected randomly from the Macrosomia Birth Cohort in Wuxi, China. The height and weight were measured and blood samples were collected. Plasma concentrations of 8 biochemical markers were detected. Apa I polymorphism was analyzed by polymerase chain reaction-restriction fragment length polymor­phism (PCR-RFLP.Results: Biochemical markers were detected for 296 subjects and 271 subjects were genotyped for the Apa I polymorphism. No association was found between birth weight and 8 biochemical markers. In boys, the BMIs of AA, AG and GG genotypes were 16.10 ± 2.24 kg/m2, 17.40 ± 3.20 kg/m2, 17.65 ± 2.66 kg/m2. And there was statistical difference among the three genotypes. But in girls, there was no statistical difference. The birth weights of AA, AG and GG genotypes were 3751.13 ± 492.43 g, 3734.00 ± 456.88 g, 3782.00 ± 461.78 g. And there was no statis­tical difference among the three genotypes.Conclusion: Biochemical markers are not associated with birth weight. Apa I polymorphism may be related to child­hood BMI, but it may be not associated with birth weight. Therefore, biochemical markers and Apa I polymorphism might not play a role in the association of birth weight and BMI.

  10. Biochemical markers of physical exercise on Mild Cognitive Impairment and dementia; systematic review and perspectives

    Directory of Open Access Journals (Sweden)

    Camilla Steen Jensen

    2015-08-01

    Full Text Available Background: The cognitive effects of physical exercise in patients with dementia disorders or Mild Cognitive Impairment (MCI have been examined in various studies; however the biochemical effects of exercise from intervention studies are largely unknown. The objective of this systematic review is to investigate the published results on biomarkers in physical exercise intervention studies in patients with MCI or dementia.Methods: The PubMed database was searched for studies from 1976 to February 2015. We included intervention studies investigating the effect of physical exercise activity on biomarkers in patients with MCI or dementia. Results: A total of eight studies were identified (n= 447 patients evaluating exercise regimes with variable duration (single session - 3 sessions pr week for 26 weeks and intensity (light resistance training – high intensity aerobic exercise. Various biomarkers were measured before and after intervention. Seven of the eight studies found a significant effect on their selected biomarkers with a positive effect of exercise on brain-derived neurotrophic factor, cholesterol, testosterone, estradiol, dehydroepiadrosterone and insulin in the intervention groups compared with controls.Conclusion: Although few studies suggest a beneficial effect on selected biomarkers, we need more knowledge of the biochemical effect of physical exercise in dementia or MCI.

  11. Characterization of blood biochemical markers during aging in the Grey Mouse Lemur (Microcebus murinus: impact of gender and season

    Directory of Open Access Journals (Sweden)

    Marchal Julia

    2012-11-01

    Full Text Available Abstract Background Hematologic and biochemical data are needed to characterize the health status of animal populations over time to determine the habitat quality and captivity conditions. Blood components and the chemical entities that they transport change predominantly with sex and age. The aim of this study was to utilize blood chemistry monitoring to establish the reference levels in a small prosimian primate, the Grey Mouse Lemur (Microcebus murinus. Method In the captive colony, mouse lemurs may live 10–12 years, and three age groups for both males and females were studied: young (1–3 years, middle-aged (4–5 years and old (6–10 years. Blood biochemical markers were measured using the VetScan Comprehensive Diagnostic Profile. Because many life history traits of this primate are highly dependent on the photoperiod (body mass and reproduction, the effect of season was also assessed. Results The main effect of age was observed in blood markers of renal functions such as creatinine, which was higher among females. Additionally, blood urea nitrogen significantly increased with age and is potentially linked to chronic renal insufficiency, which has been described in captive mouse lemurs. The results demonstrated significant effects related to season, especially in blood protein levels and glucose rates; these effects were observed regardless of gender or age and were likely due to seasonal variations in food intake, which is very marked in this species. Conclusion These results were highly similar with those obtained in other primate species and can serve as references for future research of the Grey Mouse Lemur.

  12. Bone turnover markers in medicamentous and physiological hyperprolactinemia in female rats

    Directory of Open Access Journals (Sweden)

    Radojković Danijela

    2014-01-01

    Full Text Available Background/Aim. There is a lack of data on the effects of prolactin on calcium metabolism and bone turnover in hyperprolactinemia of various origins. The aim of this study was to compare the influence of medicamentous and physiological hyperprolactinemia on bone turnover in female rats. Methods. Experimental animals (18 weeks old, Wistar female rats were divided as follows: the group P - 9 rats, 3 weeks pregnant; the group M3-10 rats that were intramuscularly administrated sulpirid (10 mg/kg twice daily for 3 weeks, the group M6 - 10 rats that were intramuscularly administrated with sulpirid (10 mg/kg twice daily for 6 weeks, and age matched nulliparous rats as the control group: 10 rats, 18-week-old (C1 and 7 rats, 24 weeks old (C2. Laboratory investigations included serum ionized calcium and phosphorus, urinary calcium and phosphorous excretion, osteocalcin and serum procollagen type 1 N-terminal propeptide (P1NP. Results. Experimental animals in the group P compared to the control group, displayed lower mean serum ionized calcium (0.5 ± 0.2 vs 1.12 ± 0.04 mmol/L; p < 0.001; higher mean serum phosphorus (2.42 ± 0.46 vs 2.05 ± 0.2 mmol/L; p < 0.05; increased urinary calcium (3.90 ± 0.46 vs 3.05 ± 0.58; p < 0.01 and significantly increased P1NP (489,22 ± 46,77 vs 361.9 ± 53,01 pg/mL; p < 0.001. Experimental animals in the group M3 had significantly decreased P1NP, compared to the control group. Prolongated medicamentous hyperprolactinemia (the group M6 induced increased serum ionized calcium (1.21 ± 0.03 vs 1.15 ± 0.02 mmol/L; p < 0.001; decreased serum phosphorus (1.70 ± 0.13 vs 1.89 ± 0.32 mmol/L; p < 0.001; decreased osteocalcin and P1NP. Conclusions. Physiological hyperprolactinemia does not have such harmful effect on bone metabolism as medicamentous hyperprolactinemia. Chronic medicamentous hyperprolactinemia produces lower serum levels of bone formation markers. Assessment of bone turnover markers in prolongated medicamentous

  13. Relationships betweeninterspeciifc differences inthe mass ofinternal organs, biochemical markers ofmetabolic activity, andthe thermogenic properties ofthree small passerines

    Institute of Scientific and Technical Information of China (English)

    Minlan Bai; Xujian Wu; Kejing Cai; Weihong Zheng; Jinsong Liu

    2016-01-01

    Background: The capacity for thermogenesis is considered part of an animal’s adaptive strategy for survival, and basal metabolic rate (BMR) is one of the fundamental physiological standards for assessing the energy cost of ther-moregulation in endotherms. BMR has been shown to be a highly lfexible phenotypic trait both between, and within, species, but the metabolic mechanisms involved in the regulation of BMR, which range from variation in organ mass to biochemical adjustments, remain unclear. In this study, we investigated the relationship between organ mass, biochemical markers of metabolic tissue activity, and thermogenesis, in three species of small passerines: wild Bram-blings (Fringilla montifringilla), Little Buntings (Emberiza pusilla) and Eurasian Tree Sparrows (Passer montanus), caught in Wenzhou, southeastern China. Methods: Oxygen consumption was measured using an open-circuit respirometry system. Mitochondrial state-4 res-piration and cytochrome c oxidase (COX) activity in liver and pectoral muscle were measured with a Clark electrode. Results: Our results show that Eurasian Tree Sparrows had signiifcantly higher BMR, digestive organ mass, mitochon-drial state-4 respiration capacity and COX activity in liver and muscle, than Bramblings and Little Buntings. Further-more, interspeciifc differences in BMR were strongly correlated with those indigestive tract mass, state-4 respiration and COX activity. Conclusions: Our ifndings suggest that the digestive organ mass, state-4 respiration and COX activity play an impor-tant role in determining interspeciifc differences in BMR.

  14. Raman spectroscopy of stored red blood cells: evaluating clinically-relevant biochemical markers in donated blood

    Science.gov (United States)

    Atkins, Chad G.; Buckley, Kevin; Chen, Deborah; Schulze, H. G.; Devine, Dana V.; Blades, Michael W.; Turner, Robin F. B.

    2015-07-01

    Modern transfusion medicine relies on the safe, secure, and cost-effective delivery of donated red blood cells (RBCs). Once isolated, RBCs are suspended in a defined additive solution and stored in plastic blood bags in which, over time, they undergo chemical, physiological, and morphological changes that may have a deleterious impact on some patients. Regulations limit the storage period to 42 days and the cells do not routinely undergo analytical testing before use. In this study, we use Raman spectroscopy to interrogate stored RBCs and we identify metabolic and cell-breakdown products, such as haemoglobin and membrane fragments, that build-up in the blood bags as the cells age. Our work points the way to the development of an instrument which could quickly and easily assess the biochemical nature of stored RBC units before they are transfused.

  15. The Effects of Cold Water Immersion after Rugby Training on Muscle Power and Biochemical Markers

    Directory of Open Access Journals (Sweden)

    Masaki Takeda

    2014-09-01

    Full Text Available During rugby game, or intensive rugby training there are many high intensity explosive exercises and eccentric muscle contractions, therefore adequate recovery is very important to rugby players. In the present study we have tested the effects of cold water immersion (CWI after game-simulated (80 min. rugby training on muscle power recovery and blood markers of muscle damage. Twenty well-trained collegiate male rugby players (age: 20.3 ± 0.6 years old, body height: 1.74 ± 0.05 m, body weight: 85.4 ± 2.0 kg, body fat: 18.2 ± 1.4 % volunteered for this study. This study was conducted as a cross-over design; i.e., the subjects were randomly assigned either to CWI (n = 10 or passive rest condition (n = 10 for the 1st trial and 1 week later the subjects were switched conditions for the 2nd trial. After the simulated rugby training, including tackles and body contacts, muscle functional ability and blood markers of muscle damage were tested immediately, after CWI or passive rest, and again 24 hours later. Statistical analysis of all muscle functional tests (10 m dash, counter movement jump, reaction time, side steps except for 10 seconds maximal pedaling power and blood makers of muscle damage (aspartate aminotransferase, lactate dehydrogenase, creatine kinase, and creatinine revealed significant main effects for time (p < 0.05. However, no statistically significant interactions were found in any of the muscle functional tests and blood markers between groups and time courses. Our results suggest that a rugby game induces muscle damage and reduces muscle function. However, CWI has no significant restorative effect after an 80-minute rugby game in terms of muscle damage.

  16. Serum procollagen 1 amino-terminal propeptide (P1NP) in prostate cancer; pitfalls of its use as an early surrogate marker for bone metastasis

    International Nuclear Information System (INIS)

    Procollagen 1 amino-terminal propeptide (P1NP) is a bone formation marker and has been shown to have a strong association with the extent of bone metastases (BM) in patients with advanced prostate cancer. More recently, its levels were found to be affected by androgen deprivation therapies and bisphosphonates. We investigated the role of P1NP as a surrogate marker of sub-radiological skeletal metastases in prostate cancer patients with biochemical failure (BF). BePrepared is a prospective longitudinal substudy of RADAR trial in which serial P1NPs were collected at regular intervals for 123 patients who had completed RADAR protocol treatment. There was no trend identified in P1NP levels prior to diagnosis of BM. We found that there was no difference in P1NP concentrations at the time of diagnosis of BM in the group that developed BM compared with P1NP levels in groups with only nodal metastases or BF. In the group of patients who did not experience BF, P1NP was affected by previous luteinizing hormone-releasing hormone-agonist and bisphosphonate therapy. Hence, patients who received an 18-month course of androgen deprivation without bisphosphonates had significantly higher P1NP values than patients with shorter androgen deprivation therapy (ADT) course combined with a course of bisphosphonates. P1NP is not a sensitive serum marker of early BM in high-risk prostate cancer patients with BF and low prostate-specific antigen levels as its levels are affected by prior history of bone remodelling therapies such as ADT and bisphosphonates.

  17. The effect of cholecalciferol and calcitriol on biochemical bone markers in HIV type 1-infected males

    DEFF Research Database (Denmark)

    Bang, Ulrich Christian; Kolte, Lilian; Hitz, Mette;

    2013-01-01

    conducted a placebo-controlled randomized study running for 16 weeks including 61 HIV-1-infected males, of whom 51 completed the protocol. Nineteen participants were randomized to daily treatment with (A) 0.5-1.0 μg calcitriol and 1,200 IU (30 μg) cholecalciferol, 17 participants to (B) 1,200 IU...

  18. Can Preterm Labour Be Predicted in Low Risk Pregnancies? Role of Clinical, Sonographic, and Biochemical Markers

    Directory of Open Access Journals (Sweden)

    Reva Tripathi

    2014-01-01

    Full Text Available Background and Objectives. This is a prospective nested cohort study conducted over a period of 3 years. 2644 women were recruited, out of which final analysis was done for 1884 women. Methods. Cervicovaginal and blood samples were collected for all recruited women. Out of these, 137 women who delivered before 35 weeks were treated as cases and equal number of matched controls were chosen. Analysis of samples for serum G-CSF, AFP, ferritin, and cervicovaginal interleukin-6 and IGFBP-1 was done. Results. Poor orodental hygiene, which can be a social marker, was significantly more common in women who delivered preterm (P=0.008. Serum alkaline phosphatase and serum ferritin were found to be significantly associated with preterm deliveries. The 90th percentile value of these parameters was considered as cut-off as there is no specific cut-off. Conclusions. Our study did not prove usefulness of any predictive marker. Serum ferritin and alkaline phosphatase were found to have correlation but their values are affected in many conditions and need to be elucidated with caution. Larger studies are needed for predicting preterm labour in asymptomatic women.

  19. Relationship between arterial vascular calcifications seen on screening mammograms and biochemical markers of endothelial injury

    Energy Technology Data Exchange (ETDEWEB)

    Pidal, Diego [Unidad de Investigacion del, Hospital de Jove, Gijon (Spain)], E-mail: dpidal@hotmail.com; Sanchez Vidal, M Teresa [Servicio de Medicina Interna, Hospital de Jove (Spain)], E-mail: medicinainterna@hospitaldejove.com; Rodriguez, Juan Carlos [Unidad de Investigacion del, Hospital de Jove, Gijon (Spain); Servicio de Cirugia General, Hospital de Jove (Spain); Instituto Universitario de Oncologia del Principado de Asturias, Oviedo (Spain)], E-mail: investigacion@hospitaldejove.com; Corte, M Daniela [Unidad de Investigacion del, Hospital de Jove, Gijon (Spain); Instituto Universitario de Oncologia del Principado de Asturias, Oviedo (Spain)], E-mail: mdanielac@hotmail.com; Pravia, Paz [Servicio de Radiodiagnostico, Hospital de Jove (Spain)], E-mail: radiologia@hospitaldejove.com; Guinea, Oscar [Servicio de Radiodiagnostico, Hospital de Jove (Spain)], E-mail: oscarfguinea@seram.org; Pidal, Ivan [Unidad de Investigacion del, Hospital de Jove, Gijon (Spain)], E-mail: ivanpida@hotmail.com; Bongera, Miguel [Unidad de Investigacion del, Hospital de Jove, Gijon (Spain)], E-mail: mbchoppy@hotmail.com; Escribano, Damaso [Servicio de Medicina Interna, Hospital de Jove (Spain)], E-mail: medicinainterna@hospitaldejove.com; Gonzalez, Luis O. [Unidad de Investigacion del, Hospital de Jove, Gijon (Spain)], E-mail: lovidiog@telefonica.net; Diez, M Cruz [Servicio de Cirugia General, Hospital de Jove (Spain)], E-mail: cirugiageneral@hospitaldejove.com; Venta, Rafael [Servicio de Analisis Clinicos, Hospital de San Agustin, Aviles (Spain); Departamento de Bioquimica y Biologia Molecular, Universidad de Oviedo (Spain)], E-mail: rafael.venta@sespa.princast.es; Vizoso, Francisco J. [Unidad de Investigacion del, Hospital de Jove, Gijon (Spain); Servicio de Cirugia General, Hospital de Jove (Spain); Instituto Universitario de Oncologia del Principado de Asturias, Oviedo (Spain)], E-mail: fjvizoso@telefonica.net

    2009-01-15

    To assess whether breast arterial calcifications (BAC) are associated with altered serum markers of cardiovascular risk, mammograms and records from 1759 women (age range: 45-65 years) screened for breast cancer were revised. One hundred and forty seven (8.36%) women showed BAC. A total of 136 women with BAC and controls (mean age: 57 and 55 years, respectively) accepted entering the study. There were no significant differences in serum levels of urea, glucose, uric acid, creatinine, total cholesterol, HDL-C, LDL-C, folic acid, vitamin B{sub 12}, TSH or cysteine, between both groups of patients. However, women with BAC showed higher serum levels of triglycerides (p = 0.006), homocysteine (p = 0.002) and hs-CRP (p = 0.003) than women without BAC. Likewise, we found a significantly higher percentage of cases with an elevated LDL-C/HDL-C ratio (coronary risk index >2) amongst women with BAC than in women without BAC (56.7 and 38.2%, respectively; p = 0.04). Our results indicate that the finding of BAC identify women showing altered serum markers of cardiovascular risk.

  20. Relationship between arterial vascular calcifications seen on screening mammograms and biochemical markers of endothelial injury

    International Nuclear Information System (INIS)

    To assess whether breast arterial calcifications (BAC) are associated with altered serum markers of cardiovascular risk, mammograms and records from 1759 women (age range: 45-65 years) screened for breast cancer were revised. One hundred and forty seven (8.36%) women showed BAC. A total of 136 women with BAC and controls (mean age: 57 and 55 years, respectively) accepted entering the study. There were no significant differences in serum levels of urea, glucose, uric acid, creatinine, total cholesterol, HDL-C, LDL-C, folic acid, vitamin B12, TSH or cysteine, between both groups of patients. However, women with BAC showed higher serum levels of triglycerides (p = 0.006), homocysteine (p = 0.002) and hs-CRP (p = 0.003) than women without BAC. Likewise, we found a significantly higher percentage of cases with an elevated LDL-C/HDL-C ratio (coronary risk index >2) amongst women with BAC than in women without BAC (56.7 and 38.2%, respectively; p = 0.04). Our results indicate that the finding of BAC identify women showing altered serum markers of cardiovascular risk

  1. Biochemical Characterization of Major Bone-Matrix Proteins Using Nanoscale-Size Bone Samples and Proteomics Methodology*

    OpenAIRE

    Grażyna E Sroga; Karim, Lamya; Colón, Wilfredo; Vashishth, Deepak

    2011-01-01

    There is growing evidence supporting the need for a broad scale investigation of the proteins and protein modifications in the organic matrix of bone and the use of these measures to predict fragility fractures. However, limitations in sample availability and high heterogeneity of bone tissue cause unique experimental and/or diagnostic problems. We addressed these by an innovative combination of laser capture microscopy with our newly developed liquid chromatography separation methods, follow...

  2. Evaluation of biochemical parameters and genetic markers for association with meat tenderness in South African feedlot cattle.

    Science.gov (United States)

    Frylinck, L; van Wyk, G L; Smith, T P L; Strydom, P E; van Marle-Köster, E; Webb, E C; Koohmaraie, M; Smith, M F

    2009-12-01

    A large proportion of South African feedlot cattle are crossbreds of Brahman (BrX, Bos indicus), and Simmental (SiX, Bos taurus). A sample of 20 grain fed bulls from each of these crossbreeds was used to compare meat quality with that of the small frame indigenous Nguni (NgX, Sanga) by evaluating a variety of biochemical and genetic parameters previously shown to be associated with meat tenderness. Shear force values were generally high (5.6kg average at 14days post mortem), with SiX animals higher than BrX or NgX (P=0.051) despite higher calpastatin:calpain ratio in BrX (P<0.05). Calpain activity and cold shortening were both correlated with tenderness for all classes. The sample size was too small to accurately estimate genotypic effects of previously published markers in the CAST and CAPN1 genes, but the allele frequencies suggest that only modest progress would be possible in these South African crossbreds using these markers. PMID:20416642

  3. Relationship between biochemical markers and radiographic scores in the evaluation of the osteoarticular status of Warmblood stallions.

    Science.gov (United States)

    Verwilghen, Denis; Busoni, Valeria; Gangl, Monika; Franck, Thierry; Lejeune, Jean-Philippe; Vanderheyden, Laurent; Detilleux, Johann; Grulke, Sigrid; Deberg, Michelle; Henrotin, Yves; Serteyn, Didier

    2009-10-01

    Establishing the osteoarticular status of the horse is often performed by means of radiological screening of the animals. Widespread blood sampling could reveal to be an interesting alternative to this procedure which is time consuming and sometimes technically difficult. The aim of this study was to investigate the relationship between the radiological status of the horses and the levels of biochemical markers of cartilage degradation and synovial inflammation. A specific radiological scoring and classification system was therefore developed and applied on 63 stallions presented for studbook admission. Additionally, groups of horses were established according to the occurrence of osteochondrosis, degenerative joint disease and distal interphalangeal joint effusion. Insulin growth factor-I, myeloperoxidases, Coll2-1 and Coll2-1NO(2) were used as blood markers. The combination of the blood parameters did not seem to correlate with the used scoring system. Coll2-1NO(2) levels however tended to increase with poorer radiological class and this could therefore potentially be a useful predictor of the osteoarticular status in the horse. Coll2-1 levels were significantly higher in the degenerative joint disease group. A high percentage of horses with distal interphalangeal joint effusion was present in this study and was associated with decreased IGF-I and increased Coll2-1 levels. PMID:19298987

  4. Changes in bone turnover markers and menstrual function after short-term oral DHEA in young women with anorexia nervosa.

    Science.gov (United States)

    Gordon, C M; Grace, E; Emans, S J; Goodman, E; Crawford, M H; Leboff, M S

    1999-01-01

    Bone loss is a serious consequence of anorexia nervosa (AN). Subnormal levels of serum dehydroepiandrosterone (DHEA) are seen in patients with AN and may be causally linked to their low bone density. We hypothesized that oral DHEA would decrease markers of bone resorption (urinary N-telopeptides [NTx]), and increase markers of bone formation (serum bone-specific alkaline phosphatase and osteocalcin [OC]). Fifteen young women (age 15-22 years) with AN were enrolled in a 3-month, randomized, double-blinded trial of 50, 100, or 200 mg of daily micronized DHEA. Blood and urinary levels of adrenal and gonadal steroids and bone turnover markers were measured. No adverse clinical side effects of DHEA were noted, and a 50 mg daily dose restored physiologic hormonal levels. At 3 months, NTx levels had decreased significantly in both the 50 mg (p = 0.018) and the 200 mg (p = 0.016) subgroups. OC levels simultaneously increased within treatment groups over time (p = 0.002). Eight out of 15 (53%) subjects had at least one menstrual cycle while on therapy. Short-term DHEA was well-tolerated and appears to normalize bone turnover in young women with AN. Resumption of menses in over half of subjects suggests that DHEA therapy may also lead to estradiol levels sufficient to stimulate the endometrium in this group of patients. PMID:9893076

  5. Evaluation of variability in Bacopa monnieri (L. Pennell using morphological and biochemical markers

    Directory of Open Access Journals (Sweden)

    L. S. Roshni

    2014-05-01

    Full Text Available Summary. Bacopa monnieri (L. Pennell., is a well recognized medicinal herb having memory boosting property. Eleven accessions were collected from various parts of Kerala State, India and variation in thirty characters including twelve qualitative and eighteen quantitative traits were recorded. One way ANOVA on quantitative traits showed significant variations among accessions.   The dendrogram generated on the basis of metric traits revealed accession BM 9 from Kozhikkode as the outlier.  Principal components analysis (PCA was performed to identify the significant characters to delimit the taxa and it revealed that quantitative characters like plant length, number of nodes per plant, inter nodal length, leaf length, pedicel length and flower length were the most significant ones.  Biochemical characters including total saponin and bacoside A content were also found as the highly loaded characters.  The variability records in B. monnieri can be implied to screen superior germplasm on the basis of desirable quality traits such as biomass, saponin and bacoside content.  Industrial relevance. In the traditional, Indian system of medicine, several herbs have been used in the formulation of brain or nerve tonics.  Bacopa monnieri is the prime species for this purpose.  The plant is having a wide range of distribution pattern ranging from lower mild salt affected coastal belt to higher elevation in Kerala state.  The plant is now cultivated as valuable raw drug resource in the state.  However, the price of the raw drug is determined on the basis of quality, especially on the basis of its active principle.  In the present report, morphological and biochemical traits (total saponin and bacoside A including quality parameters of the raw drug excisable from B. monnieri were analyzed for accessions from different agro climatic regions in the state which can be used as a model for the screening of superior accessions, thus make organised

  6. 6-sulfatoxymelatonin collected from infant diapers: feasibility and implications for urinary biochemical markers.

    Science.gov (United States)

    Thomas, Karen A

    2010-01-01

    The purpose of this study was to assess feasibility and acceptability of using a diaper pad for collection of in-home infant urinary samples and to test the accuracy of diaper pad extraction for 6-sulfatoxymelatonin and creatinine, which was used to correct assay results for urinary volume. To assess feasibility and acceptability, urine samples from 20 infants were collected over a 24-hr day using a cotton pad inserted in the diaper. The accuracy of diaper pad extraction was evaluated in the laboratory using urine samples collected from 11 adult volunteers and assayed using enzyme immunosorbent assay (EIA). Urine samples were divided, one aliquot was assayed without extraction, and one aliquot was instilled into a diaper pad, extracted, and assayed. Mothers found diaper pad collection acceptable and easy to perform. Of 144 infant urinary samples obtained in the home environment, 59% were usable for assay purposes, and the remaining either were contaminated with stool or were of insufficient volume. While creatinine values from diaper pad extracted and nonextracted samples were highly correlated (r(2) = .947), those of creatinine-corrected 6-sulfatoxymelatonin were not (r(2) = .216). Diaper pad collection procedures altered 6-sulfatoxymelatonin values. Implications for measurement of urinary biochemical substances and statistical analysis are discussed. PMID:19502239

  7. Effect of Intravenous Glucose Tolerance Test on Bone Turnover Markers in Adults with Normal Glucose Tolerance

    Science.gov (United States)

    Xiang, Shou-Kui; Wan, Jing-Bo; Jiang, Xiao-Hong; Zhu, Yong-Hua; Ma, Jin-Hong; Hua, Fei

    2016-01-01

    Background It is well known that enteral nutrients result in acute suppression of bone turnover markers (BTMs), and incretin hormones are believed to play a significant role in this physiological skeletal response. However, there is limited research exploring the impact of parenteral nutrients on BTMs. Our aim was to assess the influence of intravenous glucose on BTMs in adults with normal glucose tolerance (NGT). Material/Methods We conducted 1-h intravenous glucose tolerance test (IVGTT) in 24 subjects with NGT. Blood samples were collected before and 5, 10, 15, 20, 30, 60 min after administration of glucose, then serum levels of bone formation marker procollagen type I N-terminal propeptide (P1NP) and resorption marker C-terminal cross-linking telopeptides of collagen type I (CTX) were measured. Results During IVGTT, the fasting CTX level fell gradually and reached a nadir of 80.4% of the basal value at 60 min. Conversely, the fasting P1NP level decreased mildly and reached a nadir of 90.6% of the basal value at 15 min, then gradually increased and reached 96.6% at 60 min. The CTX-to-P1NP ratio increased slightly and reached a peak of 104.3% of the basal value at 10 min, then fell gradually and reached a nadir of 83% at 60 min. Conclusions Our study indicates that intravenous glucose results in an acute suppression of BTMs in the absence of incretin hormones. The mechanism responsible for this needs further investigation. PMID:27447783

  8. Radioautographic visualization and biochemical identification of O- phosphoserine- and O-phosphothreonine-containing phosphoproteins in mineralizing embryonic chick bone

    OpenAIRE

    1984-01-01

    We injected NaH2(33)PO4 into normal 14-d-old embryonic chicks and examined the long bones by both radioautography and biochemical analyses from 10 to 240 min after the injection was completed. At 30 min, determination of the radiographic grain density revealed that 33P was concentrated principally in fibroblasts, preosteoblasts, and osteoblasts. With time, there was a progressive increase in the density of silver grains located over both the osteogenic cells and the regions of uncalcified (os...

  9. Biochemical, bone and renal patterns in hyperparathyroidism associated with multiple endocrine neoplasia type 1

    Directory of Open Access Journals (Sweden)

    Delmar M. Lourenço Jr.

    2012-01-01

    Full Text Available Primary hyperparathyroidism associated with multiple endocrine neoplasia type I (hyperparathyroidism/multiple endocrine neoplasia type 1 differs in many aspects from sporadic hyperparathyroidism, which is the most frequently occurring form of hyperparathyroidism. Bone mineral density has frequently been studied in sporadic hyperparathyroidism but it has very rarely been examined in cases of hyperparathyroidism/multiple endocrine neoplasia type 1. Cortical bone mineral density in hyperparathyroidism/multiple endocrine neoplasia type 1 cases has only recently been examined, and early, severe and frequent bone mineral losses have been documented at this site. Early bone mineral losses are highly prevalent in the trabecular bone of patients with hyperparathyroidism/multiple endocrine neoplasia type 1. In summary, bone mineral disease in multiple endocrine neoplasia type 1related hyperparathyroidism is an early, frequent and severe disturbance, occurring in both the cortical and trabecular bones. In addition, renal complications secondary to sporadic hyperparathyroidism are often studied, but very little work has been done on this issue in hyperparathyroidism/multiple endocrine neoplasia type 1. It has been recently verified that early, frequent, and severe renal lesions occur in patients with hyperparathyroidism/multiple endocrine neoplasia type 1, which may lead to increased morbidity and mortality. In this article we review the few available studies on bone mineral and renal disturbances in the setting of hyperparathyroidism/multiple endocrine neoplasia type 1. We performed a meta-analysis of the available data on bone mineral and renal disease in cases of multiple endocrine neoplasia type 1-related hyperparathyroidism.

  10. The correlation between fecal calprotectin, simple clinical colitis activity index and biochemical markers in ulcerative colitis during high-dose steroid treatment

    DEFF Research Database (Denmark)

    Theede, Klaus; Kiszka-Kanowitz, Marianne; Nielsen, Anette Mertz;

    2014-01-01

    OBJECTIVE: Monitoring active ulcerative colitis (UC) is essential for making correct and timely treatment decisions. The current monitoring is based on symptom scores and biochemical markers, among which the role of fecal calprotectin (FC) is debated. The aims were to assess the development in FC...

  11. Biochemical Markers for Determining Vulnerable Atherosclerotic Plaque in Stenotic Patient: Biochemical Markers Study of Myeloperoxidase (MPO, Matrix Metallo-Proteinase-9 (MMP-9, Secretory Phospholipase A2 (SPLA2 and CD40 Ligand

    Directory of Open Access Journals (Sweden)

    Tommy Heryantho

    2009-08-01

    Full Text Available BACKGROUND: Thrombus is a main cause of cardiac death. Therefore identifying which coronary artery plaque is vulnerable to rupture is a critical step for cardiac intervention to prevent future cardiac events. Systemic biochemical markers are used for predicting rupture of coronary plaque or identifying stenotic coronary artery plaque(s vulnerable to rupture. METHODS: Blood samples of 2x24 locations (2x10 controls, 2x12 stable plaques and 2x2 unstable plaques of 13 patients to undergo stent placement were taken from an artery which showed no stenosis (control, 70% or more stenosis of stable plaques and unstable plaques, respectively. The blood samples were taken by using microcatheter distally and proximally. Concentrations of MPO, MMP-9, SPLA2 and CD40L of each sample were assayed. RESULTS: Concentration of MMP-9 in unstable coronary artery plaque (94.7+14.4 ng/ml significantly increased compared with that of stable coronary artery plaque (71.0+67.8 ng/ml, p=0.024. SPLA2 concentration significantly decreased in unstable coronary artery plaque (45.9+14.0 pg/ml compared with that of stable coronary artery plaque (80.9+39.3 pg/ml, p=0.015. Nine of ten studied subjects showed an average of 14.5% (range: 0.0-28.8% decrease of the SPLA2 concentration in stable plaques compared with that of the non-stenotic coronary artery. CONCLUSIONS: MMP-9 increased in unstable coronary artery plaque compared with that of stable coronary plaque. Unstable coronary artery plaques absorbed SPLA2 from the vasculars more than the stable plaques and control plaques. MMP-9 and SPLA2 may be used as markers of stability of a plaque in coronary artery in relation to its rupture potential. KEYWORDS: stable and unstable plaque, myeloperoxidase, matrix metalloproteinase-9, secretory phospholipase A2, CD40 ligand.

  12. Sensitivity of biochemical markers to evaluate cadmium stress in the freshwater diatom Nitzschia palea (Kuetzing) W. Smith

    International Nuclear Information System (INIS)

    Human activities have been increasing the cadmium levels in soils and waters, disturbing many organisms in the primary trophic levels such as microalgae. Toxic metal pollution is a focus point of serious concern and the examination and monitoring water quality are becoming essential procedures. Diatoms are important bioindicators to monitor the metal concentrations in diverse habitats. The present study was planned to determine the biochemical mechanisms used by freshwater diatoms to cope with cadmium stress and to identify biomarkers of metal stress. For this, Nitzschia palea (Kuetzing) W. Smith was grown under different concentrations of Cd (0.01-0.1 mg l-1) and the IC50 determined. Three concentrations (0.1, 0.2 and 0.3 mg Cd l-1) and a control (no cadmium) were used to undergo the experimental assays which allowed the determination of cadmium accumulation and several biochemical markers currently used to assess metal stress. N. palea was sensitive to cadmium, as the IC50 calculated was 0.0276 mg Cd l-1. Cadmium accumulation increased sharply and was mainly associated to the frustule. Total protein content increased with cadmium exposure, inducing increases and decreases in polypeptide expression, indicating an attempt of N. palea cells to adjust to the new prevailing conditions induced by metal stress. In order to cope with cadmium stress, cells induced the synthesis of chelating molecules such as phytochelatins (PCs). The enzymatic (SOD and CAT) and non-enzymatic (glutathione and proline) ROS scavenging mechanisms were also induced. Our results indicate the existence of diverse metal stress-mediated mechanisms in order to lessen metal damages to the cell. PCs showed to be a suitable biomarker of metal stress; besides being metal specific and concentration respondent it also allows to infer about the level of stress imposed to cells, constituting a useful tool to complement the evaluation of diatom communities when accessing aquatic metal toxicity.

  13. EVALUATION OF MYOCARDIAL CONTUSION USING BIOCHEMICAL MARKERS IN CHEST TRAUMA PATIENTS

    Directory of Open Access Journals (Sweden)

    Goyal

    2015-08-01

    Full Text Available BACKGROUND: C ontroversy surrounds diagnostic tests and their ability to predict the early cardiovascular complications in blunt cardiac trauma patients. AIMS: W e evaluated electrocardiogram (ECG, cardiac troponin - I (Tn - I and creatin e kinase - MB (CK - MB levels to diagnose myocardial contusion (MC in chest trauma patients. SETTINGS AND DESIGN: A total of 50 chest trauma cases were randomly included in the study. Patients with a history of ischemic heart disease or myocardial infarction and/or treatment with anti - anginal or antihypertensive drugs were excluded. MATERIAL AND METHODS: ECG, CK - MB, c reatinine phosphokinase (CPK, and Tn - I were recorded at admission and repeated at 24 and 72 hours. Patients were grouped as suspected or non - suspected MC group based on any of the following: Abnormal ECG; CK - MB > 50 U/L; CK - MB/CPK ratio > 5; Tn - I > 1.5 ng /ml. Suspected MC group patients were sub - grouped as significant MC group: If they had - abnormal echocardiographic findings such as regional wall motion abnormalities, regurgitant lesions; unexplained hemodynamic instability and shock with systolic blood pressur e <90mmHg; patients unresponsive to fluid resuscitation in spite of replacement of estimated blood loss; or patients requiring vasopressor for cardiogenic shock. STATISTICAL ANALYSIS: Student’s t - test, Z - test and sensitivity analysis were performed for statistical analysis . RESULTS: Of 50 patients, 44 belonged to suspected MC group; 15 of them had significant MC. ECG was the most sensitive (93.3% indicator of MC whereas Tn - I showed high specificity (86.20% for MC. CONCLUSIONS: Troponin - I is a speci fic marker of MC while ECG is a sensitive diagnostic tool.

  14. Rapid Evaluation of Germinability of Primed China Aster (Callistephus Chinensis Ness. Seeds with Physiological and Biochemical Markers

    Directory of Open Access Journals (Sweden)

    Badek Bogumiła

    2014-12-01

    Full Text Available The correlation between the sowing value of primed China aster seeds represented by germination percentage (GP, mean germination time (MGT, germination uniformity expressed as the time between 25% and 75% of germinated seeds (T75-25 and some selected physiological characteristics - total activity of dehydrogenases (TAD, activity of catalase (AC, activity of cell cycle (ACC and electrolyte leakage (EL has been analysed in order to find useful markers of biological quality of seeds. To achieve this objective, analyses of effects of three methods of water supply to seeds viz. - hydroconditioning by soaking in excessive amount of water (M1, hydroconditioning by soaking in limited amount of water (M2 or hydroconditioning by contact with solid carrier of water - matriconditioning (M3, three levels (30.0, 35.0 and 40.0% of seed moisture content (m.c. and three incubation periods (1, 8 and 10 days during priming and hence their influence on germination properties (GP, MGT, T75-25 in comparison with TAD, AC, ACC and EL were determined. The results showed that MGT and T75-25 were correlated with TAD, AC, ACC and EL, irrespective of their priming method and sowing value. Therefore, all the investigated physiological/biochemical parameters of seed quality can be used as markers of germinability and sowing value reached by primed China aster seeds. The results also proved that, irrespective of the water supply method applied, hydration of seeds up to 37.5% m.c., and their incubation at 20 °C for 8 days, followed by drying to their initial moisture content, increased to the greatest extent the speed and uniformity of seed germination and their physiological activity.

  15. Limited Clinical Value of Periablative Changes of Serum Markers in the Prediction of Biochemical Remission in Patients with Papillary Thyroid Cancer

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Heeyoung; Kim, Seongjang; Kim, Injoo; Kim, Keunyoung; Kim, Sojung; Kim, Bo Hyun; Kim, Sang Soo; Kyung, Jeon Yoon [Pusan National Univ., Busan (Korea, Republic of)

    2013-12-15

    Remnant thyroid ablation and 1-year stimulated thyroglobulin (sTg) measurement are recommended for those who have undergone total thyroidectomy for differentiated thyroid cancer. The serum Tg kinetics in such patients are still unclear. This study was designed to evaluate whether the periablative change in serum markers can predict biochemical remission in papillary thyroid cancer (PTC) patients. We reviewed the medical records of 185 patients who were given high-dose radioactive iodine ablation therapy from January 2006 to December 2008. Serum Tg, TSH, and anti-Tg antibody (TgAb) were measured on the day and the following 10th day of radioactive iodine administration. We defined preablative sTg as Tg-1, postablative Tg measured on the 10th day of ablation as Tg-2, and the 1-year sTg as Tg-3. ΔTg means Tg2-Tg1. The same definition was applied to TgAb. A biochemical remission defined as Tg-3 < 2 ng/ml was achieved in 144 patients. Among the patients who achieved biochemical remission, PTC recurred in six during a median follow-up of 54 months. Tg-1<3.3 ng/ml (p<0.0001) predicted biochemical remission. Neither the ΔTg nor ΔTgAb was useful for predicting biochemical remission. On the evaluation of recurrence after biochemical remission, Tg-1 > 5.32 (p<0.0001) and Tg-3 > 2.9 (p=0.01) were proven to be statistically significant cutoff values for predicting recurrence. The ΔTg and ΔTgAb were not able to predict recurrence. For the prediction of biochemical remission or recurrence after biochemical remission, preablative sTg was demonstrated to be a statistically significant serum marker. However, short-term changes in biochemical markers including Tg and TgAb around the day of ablation could not provide useful clinical information about biochemical remission or disease recurrence. In conclusion, 1-year sTg measurement cannot be omitted with short-term change.

  16. The Effect of Bioceramic Composite Extracellular Matrixes Used to Repair Bone Deficiency on Relevant Blood Biochemical Indices

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    At the base of experimental animal model construction of bone defect in New Zealand rabbit, the promoting repair effect of bioactive ceramics on bone defect as well as its machanism was studied through testing body mineral elements, enzymes related to bone morphogenetic proteins and some biochemical indexes. Refering to some documents, materials of TCP, CHA and HA were combined and TCP/BMP/ TCP-β1 and CHA/BMP/ TCP-β1, HA/BMP/ TCP-β1 composite materials were made. All kinds of them were implanted into the radial defect site of rabbit, respectively. The chosen blood indexes (Ca, P, ALP, GGT, AST, ALT, TPA, BUN and Cr) were tested by colorimetry, speed rate and bromocresol green testing methods. No abnormal effects were found in any animal after operation. Serum concentrations of Ca, P and ALP were increased with the length of time in all groups of the three kinds of composite material, mixed material and pure materials. The increases in composite material groups were more significant ( P <0.05). Comparison of the three kinds of material showed TCP > CHA > HA. There was a tendency of increased TPA and decreased BUN with the length of time. There was no significant difference between the composite material groups and pure material group (P >0.05). The three kinds of bioactive ceramics composed of extracellular matrix could increase the serum concentrations of Ca and P and activity of ALP after being implanted into defect bone and showed some repairing capacity. This provided a new area of machanism study of bone defect repair by biomaterials.

  17. FRET-Aptamer Assays for Bone Marker Assessment, C-Telopeptide, Creatinine, and Vitamin D

    Science.gov (United States)

    Bruno, John G.

    2013-01-01

    Astronauts lose 1.0 to 1.5% of their bone mass per month on long-duration spaceflights. NASA wishes to monitor the bone loss onboard spacecraft to develop nutritional and exercise countermeasures, and make adjustments during long space missions. On Earth, the same technology could be used to monitor osteoporosis and its therapy. Aptamers bind to targets against which they are developed, much like antibodies. However, aptamers do not require animal hosts or cell culture and are therefore easier, faster, and less expensive to produce. In addition, aptamers sometimes exhibit greater affinity and specificity vs. comparable antibodies. In this work, fluorescent dyes and quenchers were added to the aptamers to enable pushbutton, one-step, bind-and-detect fluorescence resonance energy transfer (FRET) assays or tests that can be freeze-dried, rehydrated with body fluids, and used to quantitate bone loss of vitamin D levels with a handheld fluorometer in the spacecraft environment. This work generated specific, rapid, one-step FRET assays for the bone loss marker C-telopeptide (CTx) when extracted from urine, creatinine from urine, and vitamin D congeners in diluted serum. The assays were quantified in nanograms/mL using a handheld fluorometer connected to a laptop computer to convert the raw fluorescence values into concentrations of each analyte according to linear standard curves. DNA aptamers were selected and amplified for several rounds against a 26- amino acid form of CTx, creatinine, and vitamin D. The commonalities between loop structures were studied, and several common loop structures were converted into aptamer beacons with a fluorophore and quencher on each end. In theory, when the aptamer beacon binds its cognate target (CTx bone peptide, creatinine, or vitamin D), it is forced open and no longer quenched, so it gives off fluorescent light (when excited) in proportion to the amount of target present in a sample. This proportional increase in fluorescence is

  18. Association between the stress fracture and bone metabolism/quality markers in lacrosse players

    Directory of Open Access Journals (Sweden)

    Wakamatsu K

    2012-07-01

    Full Text Available Kenta Wakamatsu,1 Keishoku Sakuraba,1 Yoshio Suzuki,2 Asako Maruyama,2 Yosuke Tsuchiya,3 Jiro Shikakura,2 Eisuke Ochi31Department of Sports Medicine, Graduate School of Medicine, Juntendo University, Tokyo, Japan; 2School of Health and Sports Science, Juntendo University, Chiba, Japan; 3Laboratory of Health and Sports Sciences, Meiji Gakuin University, Kanagawa, JapanBackground: Overuse injury including stress fracture is a serious problem for athletes. Recently, the importance of bone metabolism and quality as factors preventing overuse injury has been increasingly recognized. Hence, we hypothesized that markers of bone metabolism and quality are related to overuse injuries.Methods: The subjects, which were elite university lacrosse players (male, n = 35; age, 19.8 ± 1.1; female, n = 49; age, 20.0 ± 1.0, were divided into a stress fracture group and a control group. We measured the subjects’ physical characteristics (height, weight, body mass index, and body fat and bone architecture was evaluated using quantitative ultrasound. Bone alkaline phosphatase, N-telopeptide cross-link of type I collagen, tartrate-resistant acid phosphatase 5b (TRAP-5b, homocysteine, and pentosidine were measured from blood samples obtained from all subjects.Results: No significant difference was observed between groups with respect to height, weight, body mass index, and body fat, as well as quantitative ultrasound. Further, there were no significant differences in the levels of bone alkaline phosphatase, N-telopeptide cross-link of type I collagen, or TRAP-5b between stress fracture and control groups in all subjects and in male subjects. However, a significant increase in TRAP-5b level was observed in the stress fracture group compared with the control in the female subjects (409.9 ± 209.3 and 318.6 ± 81.6 mU/dL, respectively; P < 0.05. Homocysteine and pentosidine did not differ between groups.Conclusion: These results suggest that osteoclast activity of

  19. Bone density as a marker for local response to radiotherapy of spinal bone metastases in women with breast cancer: a retrospective analysis

    International Nuclear Information System (INIS)

    We designed this study to quantify the effects of radiotherapy (RT) on bone density as a local response in spinal bone metastases of women with breast cancer and, secondly, to establish bone density as an accurate and reproducible marker for assessment of local response to RT in spinal bone metastases. We retrospectively assessed 135 osteolytic spinal metastases in 115 women with metastatic breast cancer treated at our department between January 2000 and January 2012. Primary endpoint was to compare bone density in the bone metastases before, 3 months after and 6 months after RT. Bone density was measured in Hounsfield units (HU) in computed tomography scans. We calculated mean values in HU and the standard deviation (SD) as a measurement of bone density before, 3 months and 6 months after RT. T-test was used for statistical analysis of difference in bone density as well as for univariate analysis of prognostic factors for difference in bone density 3 and 6 months after RT. Mean bone density was 194.8 HU ± SD 123.0 at baseline. Bone density increased significantly by a mean of 145.8 HU ± SD 139.4 after 3 months (p = .0001) and by 250.3 HU ± SD 147.1 after 6 months (p < .0001). Women receiving bisphosphonates showed a tendency towards higher increase in bone density in the metastases after 3 months (152.6 HU ± SD 141.9 vs. 76.0 HU ± SD 86.1; p = .069) and pathological fractures before RT were associated with a significantly higher increase in bone density after 3 months (202.3 HU ± SD 161.9 vs. 130.3 HU ± SD 129.2; p = .013). Concomitant chemotherapy (ChT) or endocrine therapy (ET), hormone receptor status, performance score, applied overall RT dose and prescription of a surgical corset did not correlate with a difference in bone density after RT. Bone density measurement in HU is a practicable and reproducible method for assessment of local RT response in osteolytic metastases in breast cancer. Our analysis demonstrated an excellent local response within

  20. Sample Size in Clinical Cardioprotection Trials Using Myocardial Salvage Index, Infarct Size, or Biochemical Markers as Endpoint

    DEFF Research Database (Denmark)

    Engblom, Henrik; Heiberg, Einar; Erlinge, David; Jensen, Svend Eggert; Nordrehaug, Jan Erik; Dubois-Randé, Jean-Luc; Halvorsen, Sigrun; Hoffmann, Pavel; Koul, Sasha; Carlsson, Marcus; Atar, Dan; Arheden, Håkan

    2016-01-01

    biochemical markers in clinical cardioprotection trials and how scan day affect sample size. METHODS AND RESULTS: Controls (n=90) from the recent CHILL-MI and MITOCARE trials were included. MI size, MaR, and MSI were assessed from CMR. High-sensitivity troponin T (hsTnT) and creatine kinase isoenzyme MB (CKMB......) levels were assessed in CHILL-MI patients (n=50). Utilizing distribution of these variables, 100 000 clinical trials were simulated for calculation of sample size required to reach sufficient power. For a treatment effect of 25% decrease in outcome variables, 50 patients were required in each arm using...... MSI compared to 93, 98, 120, 141, and 143 for MI size alone, hsTnT (area under the curve [AUC] and peak), and CKMB (AUC and peak) in order to reach a power of 90%. If average CMR scan day between treatment and control arms differed by 1 day, sample size needs to be increased by 54% (77 vs 50) to avoid...

  1. Evaluation of Two Biochemical Markers for Salt Stress in Three Pistachio Rootstocks Inoculated with Arbuscular Mycorrhiza (Glomus mosseae

    Directory of Open Access Journals (Sweden)

    Shamshiri M.H.

    2014-03-01

    Full Text Available The possible involvement of the methylglyoxal and proline accumulation in leaves and roots of three pistachio rootstocks, cv. Sarakha, Abareqi and Bane baghi, pre-inoculated with arbuscular mycorrhizal fungus (Glomus mosseae in response to salt stress was studied during a greenhouse experiment in 2013. Six months old pistachio seedlings were exposed to four salinity levels of irrigation water (EC of 0.5 as control, 5, 10 and 15 dS m-1 for 70 days. Methylglyoxal and proline of the roots and leaves were increased by increasing salt stress. The highest concentrations of proline in leaves and roots were recorded in Abareqi rootstock while the lowest concentration was observed in Sarakhs. In general, a negative relationship was obtained between proline and methylglyoxal concentrations in both tissues especially at two highest levels of salinity. A very strong relationship between salinity and measured biochemical markers were found. The level of both biomarkers were reduced in both tissues and in all rootstocks as the effect of mycorrhizal symbiosis. Root colonization percentage was declined as the effect of salinity in Abareqi and Bane baghi and not in Sarakhs.

  2. Evaluating the levels of salivary alkaline and acid phosphatase activities as biochemical markers for periodontal disease: A case series

    Directory of Open Access Journals (Sweden)

    Sarita Dabra

    2012-01-01

    Full Text Available Background: The purpose of this study was to determine the salivary levels of alkaline phosphatase (ALP and acid phosphatase (ACP activities in patients with periodontal disease and to evaluate the use of these enzymes as biochemical markers for periodontal tissue damage. Materials and Methods: In this prospective analytical study, we examined the activities of salivary ALP and ACP in patients with periodontal disease, before and after periodontal treatment. The experimental groups consisted of 20 gingivitis patients and 20 periodontitis patients and the control group had healthy subjects (20 samples. The stimulated saliva of the patient was collected in a sterile test tube and analyzed using Hitachi′s Diagnostic Automatic Analyser. Periodontal disease was determined based on clinical parameters such as gingival index, probing depth and clinical attachment loss. Patients with periodontal disease were under conventional periodontal treatment. The statistical analysis applied was Student′s t-test. Probabilities less than 0.05 (P < 0.05 were considered significant. Results: The obtained results showed statistically significant increased activities of ALP and ACP in saliva from patients with periodontal disease in relation to control group. A significant reduction in the enzyme levels was seen after conventional periodontal therapy. Conclusions: Based on these results, salivary ALP and ACP can be considered to be the biomarkers for evaluating periodontal tissue damage.

  3. Bone mineral density and bone markers in patients with a recent low-energy fracture: effect of 1 y of treatment with calcium and vitamin D

    DEFF Research Database (Denmark)

    Hitz, Mette F; Jensen, Jens-Erik B; Eskildsen, Peter C

    2007-01-01

    : In a double-blinded design, patients with fracture of the hip (lower-extremity fracture, or LEF) or upper extremity (UEF) were randomly assigned to receive 3000 mg calcium carbonate + 1400 IU cholecalciferol or placebo (200 IU cholecalciferol). BMD of the hip (HBMD) and lumbar spine (LBMD) were......BACKGROUND: Low-energy fractures of the hip, forearm, shoulder, and spine are known consequences of osteoporosis. OBJECTIVE: We evaluated the effect of 1 y of treatment with calcium and vitamin D on bone mineral density (BMD) and bone markers in patients with a recent low-energy fracture. DESIGN...... significantly related to physical performance. CONCLUSIONS: A 1-y intervention with calcium and vitamin D reduced bone turnover, significantly increased BMD in patients younger than 70 y, and decreased bone loss in older patients. The effect of treatment was related to physical performance....

  4. Markers

    Science.gov (United States)

    Healthy Schools Network, Inc., 2011

    2011-01-01

    Dry erase whiteboards come with toxic dry erase markers and toxic cleaning products. Dry erase markers labeled "nontoxic" are not free of toxic chemicals and can cause health problems. Children are especially vulnerable to environmental health hazards; moreover, schools commonly have problems with indoor air pollution, as they are more densely…

  5. A thermodynamic model of bone remodelling: The influence of dynamic loading together with biochemical control

    Czech Academy of Sciences Publication Activity Database

    Klika, Václav; Maršík, František

    2010-01-01

    Roč. 10, č. 3 (2010), s. 220-230. ISSN 1108-7161 R&D Projects: GA ČR(CZ) GA106/08/0557 Institutional research plan: CEZ:AV0Z20760514 Keywords : bone remodelling * chemical kinetics * dynamic loading Subject RIV: FI - Traumatology, Orthopedics

  6. Biochemical analysis of the response in rat bone marrow cell cultures to mechanical stimulation.

    Science.gov (United States)

    Yoshikawa, T; Peel, S A; Gladstone, J R; Davies, J E

    1997-01-01

    Bone marrow cells obtained from rat femora were subjected to primary culture with 15% fetal bovine serum in the presence of 10(-8) M dexamethasone, and following trypsin treatment 5 days later were seeded on Petriperm dishes which have a flexible bottom. After a 2-day subculture, a cyclic stress consisting of a 1 s stretch (0.3% strain. 0.5 Hz) and a 1 s relaxation for 30 min every day was started. Culture tissue was removed on day 2 of the subculture (immediately prior to start of stimulation), and then on days 5 and 8 (3 and 6 days after the start of stimulation, respectively), at which times dry weight, DNA, alkaline phosphatase (ALP) activity, and bone Gla protein (BGP, osteocalcin) were measured. Both the dry weight and DNA showed a significant increase in the stimulated group by day 8, while the ALP activity showed a significant increase by day 5. The BGP began to increase in the stimulated group on day 5 in contrast to the control group in which it only increased on day 8. These results support the contention that mechanical stimulation promotes the differentiation of osteogenic cells and enhances bone formation. Since in this experimental model the acceleration of bone formation by mechanical stimulation can be reproduced in vitro, it is extremely useful for investigating the mechanisms underlying mechanical stimulation. PMID:9622104

  7. Correlation of biochemical markers and clinical signs of hyperandrogenism in women with polycystic ovary syndrome (PCOS) and women with non-classic congenital adrenal hyperplasia (NCAH)

    OpenAIRE

    Nana Kvashilava; Jenara Kristesashvili; Diana Chanukvadze

    2012-01-01

    Background: Polycystic ovary syndrome (PCOS) is the most common cause of hyperandrogenism in women. Non-classic congenital adrenal hyperplasia (NCAH) is very close to PCOS. The diagnosis of hyperandrogenism is not based on the finding of decreased or increased levels of a single hormone. Objective: In our paper, we are going to test correlation between clinical signs and biochemical markers of hyperandrogenism. Materials and Methods: In this prospective study, we calculated free testosterone ...

  8. The Relationship Between Technetium-99m-Methoxyisobutyl Isonitrile Parathyroid Scintigraphy and Hormonal and Biochemical Markers in Suspicion of Primary Hyperparathyroidism

    OpenAIRE

    Güler Silov; Ayşegül Özdal; Zeynep Erdoğan; Özgül Turhal; Hatice Karaman

    2013-01-01

    Objective: Technetium-99m-methoxyisobutyl isonitrile (Tc-99m MIBI) has been widely used to evaluate hyperfunctioning autonomous parathyroid glands in patients with elevated intact parathyroid hormone (iPTH) and/or calcium (Ca) level. The aim of this study was to evaluate the relationship between Tc-99m MIBI parathyroid scintigraphy and hormonal and biochemical markers in suspicion of primary hyperparathyroidism (PHPT). Material and Methods: Dual-phase Tc-99m MIBI parathyroid scintigraphy and ...

  9. The influence of bacterial vaginosis on gestational week of the completion of delivery and biochemical markers of inflammation in the serum

    Directory of Open Access Journals (Sweden)

    Jakovljević Ana

    2014-01-01

    Full Text Available Bacground/Aim. Preterm delivery is one of the most common complications in pregnancy, and it is the major cause (75- 80% of all neonatal deaths. Bacterial vaginosis predisposes to an increased risk of preterm delivery, premature rupture of membrane and miscarriage. In this syndrome normal vaginal lactobacilli, which produce protective H2O2, are reduced and replaced with anaerobic, gram-negative bacteria and others. The aim of this study was to evaluate the influence of bacterial vaginosis on the week of delivery and biochemical markers of inflammation in the serum. Methods. A total of 186 pregnant women were included into this study, between the week 16 and 19 of pregnancy. In the study group there were 76 pregnant women with diagnosed bacterial vaginosis by the criteria based on vaginal Gram-stain Nugent score and Amsel criteria. In the control group there were 110 healthy women with normal vaginal flora. Ultrasound examination was performed in both groups. Vaginal fluid and blood samples were taken to determine biochemical markers with colorimetric methods. Results. The week of delivery was statistically significantly shorter in the study group and the levels of biochemical markers of inflammation (C-reactive protein and fibrinogen in the serum were statistically significantly higher in women with bacterial vaginosis comparing to the control group. Also the levels of uric acid and white blood cells in the serum were higher in the study group compared to the control one. Conclusion. Our study indicates that the pregnancy complicated with bacterial vaginosis ends much earlier than the pregnancy without it. Also, higher levels of biochemical markers of inflammation in the serum in the study group, similarly to results of other studies, suggest that pathophysiological processes responsible for preterm delivery can begin very early in pregnancy.

  10. Effects of a low-fat diet with antioxidant supplementation on biochemical markers of multiple sclerosis long-term care residents

    OpenAIRE

    Elba Mauriz; A. Laliena; Vallejo, D.; M. J. Tuñón; J. M. Rodríguez-López; R. Rodríguez-Pérez; M. C. García-Fernández

    2013-01-01

    Introduction: Multiple sclerosis (MS) treatment options are primarily limited to immunomodulatory therapies in MS non-progressive forms. Nutrition intervention studies suggest that diet may be considered as a complementary treatment to control disease progression. Therefore, dietary intervention may help to improve wellness and ameliorate symptoms of MS patients. Objectives: To assess the effect of a low-fat diet with antioxidant supplementation on biochemical markers of institutionalized pat...

  11. Biochemical markers of liver and kidney function are influenced by thyroid function-a case-controlled follow up study in Indian hypothyroid subjects

    OpenAIRE

    Arora, Sarika; Chawla, Ranjna; Tayal, Devika; Gupta, Vinod K.; Mr. Jagdeep S Sohi; Mallika, V.

    2009-01-01

    Thyroid hormones regulate the renal hemodynamics and basal metabolic rate of most cells. This hospital-based case-control study was done to evaluate the changes in biochemical markers of liver and kidney function in hypothyroid subjects before and after treatment. The study included 176 subjects randomly selected from Thyroid clinics. Serum T3, T4, TSH, Liver and Kidney Function tests were analysed using standard kits. Forty-six hypothyroid patients were re-evaluated 6 weeks after thyroxine s...

  12. Effect of transient scrotal hyperthermia on sperm parameters, seminal plasma biochemical markers, and oxidative stress in men

    Directory of Open Access Journals (Sweden)

    Meng Rao

    2015-01-01

    Full Text Available In this experimental prospective study, we aimed to analyze the effect of transient scrotal hyperthermia on the male reproductive organs, from the perspective of sperm parameters, semen plasma biochemical markers, and oxidative stress, to evaluate whether different frequencies of heat exposure cause different degrees of damage to spermatogenesis. Two groups of volunteers (10 per group received testicular warming in a 43°C water bath 10 times, for 30 min each time: group 1: 10 consecutive days; group 2: once every 3 days. Sperm parameters, epididymis and accessory sex gland function, semen plasma oxidative stress and serum sex hormones were tested before treatment and in the 16-week recovery period after treatment. At last, we found an obvious reversible decrease in sperm concentration (P = 0.005 for Group 1 and P= 0.008 for Group 2 when the minimums were compared with baseline levels, the same below, motility (P = 0.009 and 0.021, respectively, the hypoosmotic swelling test score (P = 0.007 and 0.008, respectively, total acrosin activity (P = 0.018 and 0.009, respectively, and an increase in the seminal plasma malondialdehyde concentration (P = 0.005 and 0.017, respectively. The decrease of sperm concentration was greater for Group 2 than for Group 1 (P = 0.031. We concluded that transient scrotal hyperthermia seriously, but reversibly, negatively affected the spermatogenesis, oxidative stress may be involved in this process. In addition, intermittent heat exposure more seriously suppresses the spermatogenesis compared to consecutive heat exposure. This may be indicative for clinical infertility etiology analysis and the design of contraceptive methods based on heat stress.

  13. Hypocaloric high-protein diet improves clinical and biochemical markers in patients with nonalcoholic fatty liver disease (NAFLD

    Directory of Open Access Journals (Sweden)

    Sebastião Mauro Bezerra Duarte

    2014-01-01

    Full Text Available Objective: To investigate the role of hypocaloric high-protein diet, a prospective clinical study was conducted in NAFLD patients. Research methods and procedures: Pre-versus post-interventional data were analyzed in 48 stable NAFLD patients (submitted to a hypocaloric high-protein diet during 75 days. Variables included anthropometrics (body mass index/ BMI and waist circumference/WC, whole-body and segmental bioimpedance analysis and biochemical tests. Diet compliance was assessed by interviews every two weeks. Results: BMI, WC and body fat mass remained relatively stable (-1.3%, -1.8% and -2.5% respectively, no significance. HDL- cholesterol increased (P < 0.05 whereas total, LDL and VLDL cholesterol, triglycerides, aspartate aminotransferase/AST, gamma glutamyltransferase/GGT, alkaline phosphatase/AP, fasting blood glucose and glycated hemoglobin/ HbA1c decreased (P < 0.05. When patients were stratified according to increase (22/48, 45.8% and decrease (21/48, 43.8% of BMI, association between weight decrease and liver benefit could be elicited in such circumstances for ALT, AP and AST/ALT ratio. No change could be demonstrated in patients who gained weight. Multivariate assessment confirmed that waist circumference, ferritin, triacylglycerol, and markers of glucose homeostasis were the most relevant associated with liver enzymes. Discussion: Ours results are consistent with the literature of calorie restriction in the management of NAFLD. Changes in lifestyle and weight loss are recommended for NAFLD patients. European guidelines also support this recommendation. Conclusion: This is the first study that demonstrated that a high protein, hypocaloric diet were associated with improvement of lipid profile, glucose homeostasis and liver enzymes in NAFLD independent on BMI decrease or body fat mass reduction.

  14. Calcitonin receptors as markers for osteoclastic differentiation: correlation between generation of bone-resorptive cells and cells that express calcitonin receptors in mouse bone marrow cultures.

    Science.gov (United States)

    Hattersley, G; Chambers, T J

    1989-09-01

    The osteoclast is the cell that resorbs bone. It is known to derive from hemopoietic precursors, but analysis of lineage and regulation of differentiation has been hampered by lack of a specific marker that enables identification of cells of osteoclastic phenotype. Previously used markers, such as multinuclearity, that are specific for osteoclasts in bone become less specific in culture. Uniquely among bone and bone marrow cells, osteoclasts possess abundant calcitonin (CT) receptors. We therefore tested the correlation between the generation of bone-resorptive function and the formation of CT receptor-positive cells from hemopoietic tissue in vitro. Without 1,25-dihydroxy-vitamin D3 [1,25-(OH)2D3], a hormone that induces osteoclastic differentiation in vitro, bone marrow cultures showed very little bone resorption, and only small numbers of CT receptor-positive cells developed. When 1,25-(OH)2D3 was added to the cultures, CT receptor-positive cells developed within 1 day and reached a peak after 7 days. Bone resorption commenced within 2 days of hormone addition. There was a strong parallelism between the cumulative number of CT receptor-positive cells and the extent of bone resorption. The capacity of cultures to generate bone-resorptive activity and CT receptor-positive cells declined progressively when 1,25-(OH)2D3 was added to hemopoietic tissue after a 7- to 21-day hormone-free incubation period. The number of CT receptor-positive cells in these cultures correlated strongly (r = 0.96) with bone resorption. The behavior of these cultures suggests that 1,25-(OH)2D3 acts to induce terminal differentiation of osteoclast precursors present in the cultures, and that precursor cell numbers decreased with increasing time in vitro. All of the CT receptor-positive cells in control cultures and all of those seen shortly after 1,25-(OH)2D3 addition were mononuclear, despite considerable bone resorption; the majority of CT receptor-positive cells remained mononuclear

  15. The Correlation study on the production performance and blood biochemical parameters of Big bone chicken%大骨鸡血液生化指标与生产性能的相关性研究

    Institute of Scientific and Technical Information of China (English)

    陈宁; 郭丹; 门德才

    2014-01-01

    本研究利用3个血液酶活性标记对庄河大骨鸡的血液生化指标多态性进行研究,并与大骨鸡的产肉性能和产蛋性能进行相关性分析,筛选出用于大骨鸡产肉性能的优势遗传标记2个,产蛋性能的优势遗传标记1个,产蛋产肉兼用的优势遗传标记1个。%In this study, the polymorphism of blood biochemical indexes was investigated by the activities of three blood enzyme in the Zhuanghe bone chicken, and the correlation analysis be-tween meat and egg production performances were conducted in order to screen for two advantageous genetic markers of meat production and one advantageous genetic marker of egg production, one ad-vantageous genetic marker of both meat and egg production marker.

  16. Associations between serum 25-hydroxyvitamin D and bone turnover markers in a population based sample of German children.

    Science.gov (United States)

    Thiering, E; Brüske, I; Kratzsch, J; Hofbauer, L C; Berdel, D; von Berg, A; Lehmann, I; Hoffmann, B; Bauer, C P; Koletzko, S; Heinrich, J

    2015-01-01

    Severe vitamin D deficiency is known to cause rickets, however epidemiological studies and RCTs did not reveal conclusive associations for other parameters of bone health. In our study, we aimed to investigate the association between serum levels of 25(OH) vitamin D and bone turnover markers in a population-based sample of children. 25(OH)D, calcium (Ca), osteocalcin (OC), and β-Crosslaps (β-CTx) were measured in 2798 ten-year-old children from the German birth cohorts GINIplus and LISAplus. Linear regression was used to determine the association between bone turnover markers and 25(OH)D levels. 25(OH)D, OC, and β-CTx showed a clear seasonal variation. A 10 nmol/l increase in 25(OH)D was significantly associated with a 10.5 ng/l decrease (p < 0.001) in β-CTx after adjustment for design, sex, fasting status, time of blood drawn, BMI, growth rate, and detectable testosterone/estradiol. For OC alone no significant association with 25(OH)D was observed, whereas the β-CTx-to-OC ratio was inversely associated with 25(OH)D (-1.7% change, p < 0.001). When stratifying the analyses by serum calcium levels, associations were stronger in children with Ca levels below the median. This study in school-aged children showed a seasonal variation of 25(OH)D and the bone turnover markers OC and β-CTx. Furthermore a negative association between 25(OH)D and the bone resorption marker β-CTx was observed. PMID:26667774

  17. Diagnostic Role of 18 F-FECH-PET/CT Compared with Bone Scan in Evaluating the Prostate Cancer Patients Referring with Biochemical Recurrence

    OpenAIRE

    Mustafa Takesh; Khaldoun Odat Allh; Stefan Adams; Christian Zechmann

    2012-01-01

    18F-FECH-PET/CT has been proved to be an imaging agent for prostate carcinoma. However, its role in detecting the bone metastases is still blurred owing to the lack of related studies. The purpose of our study was to assess the efficacy of PET with 18F-ethylcholine in assessing the bone status and to compare the results with that of conventional bone scan findings. For this purpose, we selected 37 patients (mean age 69 ± 7), who had been referred for restaging purposes due to biochemical recu...

  18. Bone marrow transplantation for treatment of some radiation induced biochemical disorders in albino rat

    International Nuclear Information System (INIS)

    The present investigation has been conducted aiming to study the role played by transplantation of bone marrow cells as a biological treatment for radiation injury to carbohydrate metabolism as shown by changes in: serum glucose level and liver glycogen content as well as protein metabolism as presented by: serum total protein and protein and protein fractions. gamma irradiation caused detectable hyperglycemia parallel by depletion in liver glycogen content. On the other hand, radiation caused decrease in serum albumin, increase in serum protein content, increase in total globulin and consequently a decrease in the albumin/globulin ratio. Transplantation of bone marrow cells to irradiated rats caused restoration of glucose level in serum and glycogen content in liver after one week from transplantation; only partial restoration could be detected for total protein, total globulin, content as well as A/G ratio. 6 fig

  19. Biochemical Assessment of Bone Health in Working Obese Egyptian Females with Metabolic Syndrome; the Effect of Weight Loss by Natural Dietary Therapies

    Directory of Open Access Journals (Sweden)

    Maha I.A. Moaty

    2015-12-01

    CONCLUSION: These results confirm the benefit of doum in improving bone health parameter [25 (OH D/PTH axis] in the MetS patients, beside the MetS criteria. So, we can conclude that natural effective supplements lead towards the optimization of biochemical parameters in favor of a healthy outcome.

  20. Acute response of plasma markers of bone turnover to a single bout of resistance training or plyometrics.

    Science.gov (United States)

    Rogers, Robert S; Dawson, Andrew W; Wang, Ze; Thyfault, John P; Hinton, Pamela S

    2011-11-01

    The time course of changes in plasma bone turnover markers following an acute bout of resistance training (RT) or plyometrics (PLY) has not been well characterized. This study is the first to compare the acute response of bone formation and resorption markers to a single bout of RT or PLY. Using a partially randomized, cross-over study design, 12 recreationally active men, aged 43 ± 5 yr, each completed four exercise trials: RT (Fed/Fasted) and PLY (Fed/Fasted). In addition to the RT and PLY trials, 5 of the original 12 participants also completed a fasted, no-exercise control trial to examine time-of-day variation. For each trial, blood was drawn immediately before exercise (PRE), immediately following exercise, and 15 min, 30 min, 1 h, 2 h, and 24 h following PRE for determination of plasma bone-specific alkaline phosphatase (BAP), osteocalcin (OC), tartrate-resistant acid phosphatase 5b (TRAP5b), COOH-terminal telopeptide of type I collagen (CTX), testosterone, parathyroid hormone, and cortisol. A one-factor repeated-measures ANOVA was performed for each trial to detect changes in bone markers during the 2 h following RT or PLY. TRAP5b transiently decreased during the 2 h following all exercise trials (main effect for time, P < 0.05), but returned to PRE concentrations 2 h postexercise. BAP, CTX, and OC remained unchanged, except for reductions in BAP and CTX following PLY-Fasted and PLY-Fed, respectively. During the control trial, BAP decreased, while TRAP5b, CTX, and OC remained unchanged. In general, plasma hormone concentrations decreased during the 2 h following PLY or RT, and cumulative decreases in TRAP5b during the 2 h following exercise were positively correlated with cumulative decreases in parathyroid hormone. The results of the present study suggest that the timing of the measurement of bone turnover markers relative to the last exercise bout is important for detection of exercise-associated changes in bone turnover markers, as the markers returned

  1. Neural differentiation potential of human bone marrow-derived mesenchymal stromal cells: misleading marker gene expression

    Directory of Open Access Journals (Sweden)

    Montzka Katrin

    2009-03-01

    Full Text Available Abstract Background In contrast to pluripotent embryonic stem cells, adult stem cells have been considered to be multipotent, being somewhat more restricted in their differentiation capacity and only giving rise to cell types related to their tissue of origin. Several studies, however, have reported that bone marrow-derived mesenchymal stromal cells (MSCs are capable of transdifferentiating to neural cell types, effectively crossing normal lineage restriction boundaries. Such reports have been based on the detection of neural-related proteins by the differentiated MSCs. In order to assess the potential of human adult MSCs to undergo true differentiation to a neural lineage and to determine the degree of homogeneity between donor samples, we have used RT-PCR and immunocytochemistry to investigate the basal expression of a range of neural related mRNAs and proteins in populations of non-differentiated MSCs obtained from 4 donors. Results The expression analysis revealed that several of the commonly used marker genes from other studies like nestin, Enolase2 and microtubule associated protein 1b (MAP1b are already expressed by undifferentiated human MSCs. Furthermore, mRNA for some of the neural-related transcription factors, e.g. Engrailed-1 and Nurr1 were also strongly expressed. However, several other neural-related mRNAs (e.g. DRD2, enolase2, NFL and MBP could be identified, but not in all donor samples. Similarly, synaptic vesicle-related mRNA, STX1A could only be detected in 2 of the 4 undifferentiated donor hMSC samples. More significantly, each donor sample revealed a unique expression pattern, demonstrating a significant variation of marker expression. Conclusion The present study highlights the existence of an inter-donor variability of expression of neural-related markers in human MSC samples that has not previously been described. This donor-related heterogeneity might influence the reproducibility of transdifferentiation protocols as

  2. Effects of rhIGF-1 administration on surrogate markers of bone turnover in adolescents with anorexia nervosa☆

    Science.gov (United States)

    Misra, Madhusmita; McGrane, Jacob; Miller, Karen K.; Goldstein, Mark A.; Ebrahimi, Seda; Weigel, Thomas; Klibanski, Anne

    2013-01-01

    Background Adolescents with anorexia nervosa (AN) have low bone density and low levels of surrogate markers of bone formation. Low bone density is a consequence of hormonal alterations that include hypogonadism and decreases in IGF-1, a bone trophic factor. Although IGF-1 is key to pubertal bone accretion, and effects have been demonstrated in adults, there are no data regarding the effect of recombinant human (rh) IGF-1 administration in adolescents with AN. Objectives We hypothesized that rhIGF-1 would cause an increase in PINP, a bone formation marker, in girls with AN, without any effect on CTX, a bone resorption marker. Subjects and methods RhIGF-1 was administered at a dose of 30–40 mcg/k twice daily to 10 consecutive girls with AN 12–18 years old for 7–9 days. Ten age-matched girls with AN were followed without rhIGF-1 for a similar period. IGF-1, PINP and CTX levels were measured. Results RhIGF-1 administration caused an increase in IGF-1 from day-1 to day-4/5 (p < 0.0001) and day-1 to day-8/9 (p < 0.0001). Simultaneously, PINP increased from day-1 to day-4/5 (p=0.004) and day-1 to day-8/9 (p=0.004), with a smaller increase from day-4/5 to day-8/9 (p=0.048). CTX levels did not change with rhIGF-1 administration. No changes occurred in IGF-1 or PINP levels in girls not receiving rhIGF-1; however, CTX levels increased significantly (p=0.01). Percent change in PINP was significantly higher (p=0.02) and percent change in CTX was significantly lower (p=0.006) in girls who received rhIGF-1 compared to those who did not receive any intervention. RhIGF-1 was well tolerated without hypoglycemia. Conclusion Short-term administration of rhIGF-1 causes an increase in a surrogate bone formation markers in girls with AN without significant side effects. PMID:19523548

  3. Associations between serum 25-hydroxyvitamin D and bone turnover markers in a population based sample of German children

    OpenAIRE

    Thiering, E.; Brüske, I.; Kratzsch, J.; Hofbauer, L C; Berdel, D; von Berg, A.; Lehmann, I.; Hoffmann, B.; Bauer, C. P.; Koletzko, S.; Heinrich, J.

    2015-01-01

    Severe vitamin D deficiency is known to cause rickets, however epidemiological studies and RCTs did not reveal conclusive associations for other parameters of bone health. In our study, we aimed to investigate the association between serum levels of 25(OH) vitamin D and bone turnover markers in a population-based sample of children. 25(OH)D, calcium (Ca), osteocalcin (OC), and β-Crosslaps (β-CTx) were measured in 2798 ten-year-old children from the German birth cohorts GINIplus and LISAplus. ...

  4. Bone turnover markers are correlated with total skeletal uptake of 99mTc-methylene diphosphonate (99mTc-MDP)

    International Nuclear Information System (INIS)

    Skeletal uptake of 99mTc labelled methylene diphosphonate (99mTc-MDP) is used for producing images of pathological bone uptake due to its incorporation to the sites of active bone turnover. This study was done to validate bone turnover markers using total skeletal uptake (TSU) of 99mTc-MDP. 22 postmenopausal women (52–80 years) volunteered to participate. Scintigraphy was performed by injecting 520 MBq of 99mTc-MDP and taking whole body images after 3 minutes, and 5 hours. TSU was calculated from these two images by taking into account the urinary loss and soft tissue uptake. Bone turnover markers used were bone specific alkaline phosphatase (S-Bone ALP), three different assays for serum osteocalcin (OC), tartrate resistant acid phosphatase 5b (S-TRACP5b), serum C-terminal cross-linked telopeptides of type I collagen (S-CTX-I) and three assays for urinary osteocalcin (U-OC). The median TSU of 99mTc-MDP was 23% of the administered activity. All bone turnover markers were significantly correlated with TSU with r-values from 0.52 (p = 0.013) to 0.90 (p < 0.001). The two resorption markers had numerically higher correlations (S-TRACP5b r = 0.90, S-CTX-I r = 0.80) than the formation markers (S-Total OC r = 0.72, S-Bone ALP r = 0.66), but the difference was not statistically significant. TSU did not correlate with age, weight, body mass index or bone mineral density. In conclusion, bone turnover markers are strongly correlated with total skeletal uptake of 99mTc-MDP. There were no significant differences in correlations for bone formation and resorption markers. This should be due to the coupling between formation and resorption

  5. The clinical spectrum of renal osteodystrophy in 57 chronic hemodialysis patients: a correlation between biochemical parameters and bone pathology findings.

    Science.gov (United States)

    Chazan, J A; Libbey, N P; London, M R; Pono, L; Abuelo, J G

    1991-02-01

    Fifty-nine chronic hemodialysis patients who had been on dialysis for an average of 77 months underwent bone biopsies and the pathologic findings were correlated with biochemical and demographic data. All but two had evidence of renal osteodystrophy, 23 with osteitis fibrosa (OF), 19 with osteomalacia and/or adynamic disease (OM/AD), and 15 with mixed osteodystrophy (MOD). Patients in each group were similar with regard to age, sex distribution, duration of dialysis, unstimulated serum aluminum, calcium and phosphorus. Patients with osteitis fibrosa (OF) had statistically higher DFO stimulated aluminum, alkaline phosphatase and PTHC levels than the other two groups although there was marked individual variation. The bone biopsies were also evaluated for the amount of aluminum deposited in the osteoid seam. All 23 of the patients with OF and 11 of the 15 patients with MOD had no, mild, or minimal aluminum deposition but 12 of the 19 patients with OM/AD had moderate to marked aluminum deposition. Patients with minimal to mild aluminum deposition were similar in age, duration of dialysis, sex distribution, unstimulated and DFO stimulated aluminum levels, calcium, phosphorus, alkaline phosphatase to those with moderate to marked deposition but had significantly higher parathormone levels. All patients had been treated in a similar fashion regarding diet, oral phosphate binders and vitamin D; therefore, the observed differences in bone pathology were not readily explicable. However, patients who were found to have osteitis fibrosa and those with minimal to mild aluminum deposition had significantly higher parathormone levels when compared with patients in the other groups at the inception of dialysis. PMID:2019018

  6. Bone Biochemistry on the International Space Station

    Science.gov (United States)

    Smith, Scott M.; Heer, Martina; Zwart, Sara R.

    2016-01-01

    Bone biochemical measures provide valuable insight into the nature and time course of microgravity effects on bone during space flight, where imaging technology cannot be employed. Increased bone resorption is a hallmark of space flight, while markers of bone formation are typically unchanged or decreased. Recent studies (after the deployment to ISS of the advanced resistive exercise device, ARED), have documented that astronauts with good nutritional intake (e.g., maintenance of body mass), good vitamin D status, and exercise maintained bone mineral density. These data are encouraging, but crewmembers exercising on the ARED do have alterations in bone biochemistry, specifically, bone resorption is still increased above preflight levels, but bone formation is also significantly increased. While this bone remodeling raises questions about the strength of the resulting bone, however documents beneficial effects of nutrition and exercise in counteracting bone loss of space flight.

  7. The evaluation of Tracp5b as a marker for monitoring treatment results of bone metastasis in breast cancer patients

    Institute of Scientific and Technical Information of China (English)

    Xiaoyun Huang; Yan Si; Jia Zhao; Qiang Ding

    2008-01-01

    Objective:To evaluate the sensitivity of serum tartrate-resistant acid phosphatase 5b(Tracp5b) activity in monitoring bisphosphonate treatment results of bone metastasis in breast cancer(BC) patients. Methods:The serum activities of Tracp5b, CEA, CA153 were measured in 58 BC patients, including 26 without bone metastasis, 32 with bone metastasis. The serum activities of Tracp5b, CEA, CA153 were also measured in 19 patients with bone metastasis after 3 months of bisphosphonate treatment. Eighteen healthy women with age from 34 to 70 served as control. Results:Serum Tracp5b was significantly elevated in patients with bone metastasis compared with that in all any other groups(P< 0.05). The sensitivity of TracpSb was 78.13% and the specificity was 86.36%. The sensitivity of CA153 was 37.50% and the specificity was 77.27%. The sensitivity of CEA was 21.88% and the specificity was 84.09%. The serum activity of Tracp5b decreased significantly(P < 0.05) after 3 months of bisphosphonate treatment, while the levels of CA153 and CEA were unchanged. Conclusion:Serum TracpSb activity is a useful diagnostic marker for bone metastasis in BC patients and can be used to evaluate the treatment results of bisphosphonate.

  8. Changes in the plasma levels of several bone markers in newborn calves during the first two days of life.

    Science.gov (United States)

    Hatate, Kaoru; Shinya, Kazuhiko; Matsuo-Sato, Asako; Sasaki, Shuichi; Devkota, Bhuminand; Takahashi, Masahiro; Hirata, Toichi; Yamagishi, Norio

    2016-03-01

    The fluctuations in the plasma levels of several bone markers were investigated in newborn calves. Experiment 1 monitored the postnatal changes in the plasma levels of tartrate-resistant acid phosphatase isoform 5b (TRAP5b), total alkaline phosphatase (t-ALP) and bone-specific alkaline phosphatase (BAP) in four calves. These markers increased significantly from 9-20 hr after the first colostrum-suckling compared with the values immediately after birth. Experiment 2 evaluated changes in the plasma TRAP5b, t-ALP, BAP and type I collagen cross-linked N-telopeptide (NTx) levels within 2 days post-birth in five calves with successful passive immunization via colostrum (non-deficient group) and five others with poor colostrum intake (deficient group). The non-deficient group had significantly higher plasma levels of the four parameters around 12 hr of life compared with the deficient group. The results suggest that the increase in plasma bone markers in calves in the first day of life is related to the colostrum intake. PMID:26460313

  9. Gene expression markers in circulating tumor cells may predict bone metastasis and response to hormonal treatment in breast cancer

    Science.gov (United States)

    WANG, HAIYING; MOLINA, JULIAN; JIANG, JOHN; FERBER, MATTHEW; PRUTHI, SANDHYA; JATKOE, TIMOTHY; DERECHO, CARLO; RAJPUROHIT, YASHODA; ZHENG, JIAN; WANG, YIXIN

    2013-01-01

    Circulating tumor cells (CTCs) have recently attracted attention due to their potential as prognostic and predictive markers for the clinical management of metastatic breast cancer patients. The isolation of CTCs from patients may enable the molecular characterization of these cells, which may help establish a minimally invasive assay for the prediction of metastasis and further optimization of treatment. Molecular markers of proven clinical value may therefore be useful in predicting disease aggressiveness and response to treatment. In our earlier study, we identified a gene signature in breast cancer that appears to be significantly associated with bone metastasis. Among the genes that constitute this signature, trefoil factor 1 (TFF1) was identified as the most differentially expressed gene associated with bone metastasis. In this study, we investigated 25 candidate gene markers in the CTCs of metastatic breast cancer patients with different metastatic sites. The panel of the 25 markers was investigated in 80 baseline samples (first blood draw of CTCs) and 30 follow-up samples. In addition, 40 healthy blood donors (HBDs) were analyzed as controls. The assay was performed using quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) with RNA extracted from CTCs captured by the CellSearch system. Our study indicated that 12 of the genes were uniquely expressed in CTCs and 10 were highly expressed in the CTCs obtained from patients compared to those obtained from HBDs. Among these genes, the expression of keratin 19 was highly correlated with the CTC count. The TFF1 expression in CTCs was a strong predictor of bone metastasis and the patients with a high expression of estrogen receptor β in CTCs exhibited a better response to hormonal treatment. Molecular characterization of these genes in CTCs may provide a better understanding of the mechanism underlying tumor metastasis and identify gene markers in CTCs for predicting disease progression and

  10. Bone Mineral Density and Bone Turnover Markers Under Bisphosphonate Therapy Used in the First Year After Liver Transplantation.

    Science.gov (United States)

    Nowacka-Cieciura, Ewa; Sadowska, Anna; Pacholczyk, Marek; Chmura, Andrzej; Tronina, Olga; Durlik, Magdalena

    2016-01-01

    BACKGROUND Rapid bone loss occurs early after liver transplantation (Tx), concomitantly with intensified bone turnover. In the present study we investigated the effect of bisphosphonates (bisph) added to vitamin D (vitD) and calcium on bone mineral density (BMD) and bone biomarkers in liver graft recipients in the first posttransplant year. MATERIAL AND METHODS In 28 patients BMD was determined at the third month after Tx. In case of osteopenia (Tscore ≤-1.0) and no contraindications, oral bisph was started for 1 year (group BP, n=14); other patients served as controls (CON, n=14). The changes in BMD and biomarkers of bone formation were osteocalcin (OC), bone alkaline phosphatase (BAP), and resorption. Study endpoints were active isoform 5b of the tartrate-resistant acid phosphatase (TRACP5b), serum pyridinoline crosslinks (PYD), and urine excretion of deoxypyridinoline (Dpd) crosslinks. RESULTS In 19 (68%) patients, reduced BMD (T-score ≤1.0) was observed at baseline. The changes in lumbar BMD in BP and CON groups were 5.2% and 1.5%, respectively, not reaching statistical significance. Baseline PYD, Dpd/creat, and OC were elevated in all patients, indicating high bone turnover. We observed decrease in PYD and Dpd/creat in both groups; however, OC decreased only under bisph therapy. Increase in BAP was observed in the control group but not in the BP group. The changes in BAP and OC were significantly different (pliver transplant recipients in the first posttransplant year. Bisph more efficiently decreased the rate of bone turnover than vitD and calcium alone. PMID:27112626

  11. An informative constitutional cytogenetic marker found in a patient post bone marrow transplantation

    Energy Technology Data Exchange (ETDEWEB)

    Zaslav, A.L.; Graziano, J.; Ebert, R. [Albert Einstein College of Medicine, New Hyde Park, NY (United States)] [and others

    1994-09-01

    It is cytogenetically difficult to distinguish between host and donor cells in allogeneic bone marrow transplantation (BMT) individuals of the same sex. Here we describe a patient with a cytogenetic marker found after BMT. A 7-month-old male presented with leukemia which was CD7+, CD33+, HLADR+, and CD4-, CD8-, indicating a diagnosis of acute stem cell leukemia (ASCL). Cytogenetic analysis revealed an abnormal clone in all of the cells analyzed: 46,XY,t(2;8)(p11.2;q24),inv(9)(p13p24). This translocation is associated with B-cell acute lymphoblastic leukemia (ALL); thus, it was possible for this patient to develop B-cell ALL. The abnormal clone persisted along with normal 46,XY cells, and evolved in several of seven additional analyses. The patient was treated with two courses of chemotherapy and failed to attain cytogenetic remission. While in relapse, the patient received a BMT from his 3-year-old brother. Two weeks later, a different translocation was seen in all cells: 46,XY,t(3;12)(p21;q21). This result could be interpreted in two ways: (1) the structural abnormality was indicative of a newly evolved clone related to the patient`s disease; or (2) the donor was a balanced translocation carrier. Cytogenetic analysis of peripheral blood from the donor revealed the same translocation seen in the patient. Parental blood chromosomes were normal indicating that the donor carried a de novo balanced translocation. Subsequent chromosome analysis of both peripheral blood and BM from the patient revealed the presence of the translocation in all cells. De novo balanced translocations are rare and occur with a frequency of 1/2,000 live borns. The family received genetic counseling and was informed of the possible reproductive risks to translocation carriers. This unusual finding will serve as a useful cytogenetic marker to assist in monitoring the patient`s clinical course, i.e., chimerism and remission status.

  12. Handheld Fluorescence Resonance Energy Transfer (FRET)-Aptamer Sensor for Bone Markers

    Science.gov (United States)

    Bruno, John G.

    2015-01-01

    Astronauts lose significant bone mass during lengthy space flights. NASA wishes to monitor this bone loss in order to develop nutritional and exercise countermeasures. Operational Technologies Corporation (OpTech) has developed a handheld device that quantifies bone loss in a spacecraft environment. The innovation works by adding fluorescent dyes and quenchers to aptamers to enable pushbutton, one-step bind-and-detect FRET assays that can be freeze-dried, rehydrated with body fluids, and used to quantify bone loss.

  13. 多种骨生化指标对骨折预后的研究进展%Research Progress of Different Bone Biochemical Indicators in the Prognosis of Bone Fracture

    Institute of Scientific and Technical Information of China (English)

    张健; 安荣泽; 齐新文

    2015-01-01

    Bone fracture is a common surgical disease.With the improvement of healthcare,the treatment method of the bone fracture is gradually perfect and has already achieved remarkable clinical curative effect.However,the delayed union and nonunion of bone fracture is still the important influence factor of prognosis.The changes of biochemical indexes play a guiding role in the prognosis of bone fracture due to its relationship with bone fracture healing.But the conjoint analysis of variety of indicators is still not widely accepted.This paper reviews the literatures which investigated the clinical significance of changes in serum biochemical factors in bone fracture patients,in order to explore the features of changes in serum biochemical factors after bone fracture and to obtain accurate indicators for the prognosis of bone features.%骨折是临床常见的外科疾病,随着医疗水平的提高,骨折的治疗方法也逐渐完善,并取得了显著的临床疗效,但骨折延迟愈合及不愈合仍是影响预后的重要因素。血生化指标的改变基于其与骨折愈合的相关性,对预后起到一定指导作用,但多种生化指标的联合分析尚没有获得公认。本文就骨折发生后多种骨生化代谢指标变化的研究进展做一文献复习,探讨骨折后血生化指标变化特点,以期获得较准确的指标来预测骨折预后。

  14. Bone turnover markers in HIV-infected patients before starting antiretroviral therapy

    Directory of Open Access Journals (Sweden)

    R Martín-Morales

    2012-11-01

    Full Text Available Purpose: Bone turnover markers (BTM - aminoterminal propeptide of type 1 collagen (P1NP and C-terminal telopeptide of type 1 collagen (β-CTX - are related to bone density and fracture risk. A high prevalence of osteopenia/osteoporosis and hypovitaminosis D has been reported in HIV patients, however there are few data about BTM in this population. Our aim was to analyse the prevalence of elevated serum levels of BTM in HIV patients before starting antiretroviral therapy (ART, and related factors. Methods: Cross-sectional study of a series of HIV-patients who started ART during June/11–June/12 in our hospital. Patients with presence of diseases or treatments known to affect bone metabolism were excluded. Epidemiological, clinical, and immunovirological data in addition to serum fasting levels of glucose, lipid profile, calcium, phosphate, alkaline phosphatase, 25-hydroxyvitamin D3 (25OHD, parathyroid hormone (PTH, P1NP, and β-CTX were collected. Definitions: hypovitaminosis D if 25OHD<30 ng/ml, vitamin D deficiency if 25OHD<20 ng/ml; elevated levels of BTM if β-CTX (ng/ml >0.64 (men<70 years,>0.85 (men >70 years,>0.58 (pre-menopause women, >0.99 (post-menopause women, or P1NP (ng/mL>69.4 (men <60 years, >71.1 (men>60 years, >55.7 (pre-menopause women, >61.2 (post-menopause women. Results: 47 patients were included, 91.5% men, median age 37.1 years (30.0–44.3, and 93.6% sexual transmission of HIV (34 HMX, 10 HTX. Median time since the diagnosis of HIV was 3.4 months (1.4–31.7; there were 7 (14.9% Aids cases, median CD4 count was 277/mm3 (155–433, and HIV-VL 4.8 log10 (4.1–5.2. Median serum 25OHD was 29 µg/L (21.9–41.1, with a prevalence of hypovitaminosis of 52.2%, and deficiency of 17.4%. PTH was in range in all cases. Median serum P1NP was 33.3 ng/mL (24.5–52.5 and β-CTX 0.25 ng/mL (0.20–0.45; five (11.4% patients presented high levels of BTM: 4 men, median age 37.1 years, median CD4 count 247/mm3, median HIV-VL 5.18 log10

  15. Biochemical and morphological changes in bone marrow mesenchymal stem cells induced by treatment of rats with p-Nonylphenol

    Directory of Open Access Journals (Sweden)

    Mohammad Hossein Abnosi

    2015-04-01

    Full Text Available Objective(s:In previous investigations, we have shown para-nonylphenol (p-NP caused significant reduction of proliferation and differentiation of rat bone marrow mesenchymal stem cells (MSCs in vitro. In this study, we first treat the rats with p-NP, then carried out the biochemical and morphological studies on MSCs. Materials and Methods: Proliferation property of cells was evaluated with the help of MTT assay, trypan blue, population doubling number, and colony forming assay. Differentiation property was evaluated with quantitative alizarin red assay, measurement of alkaline phosphatase (ALP activity as well as intracellular calcium content. In addition; morphological study, TUNEL test, activated caspase assay, and comet assay were performed to evaluate the mechanism of the cell death. Results: The results showed significant reduction in the colony-forming-ability and population-doubling-number of extracted cells when compared to control ones. In addition, it was revealed that the p-NP treatment of rats caused significant reduction in nuclear diameter, cytoplasm shrinkage, and induction of caspase-dependent-apoptosis. Also there was significant reduction in ALP activity, intracellular calcium content, and intracellular matrix following osteogenic differentiation. Conclusion: As MSCs are the cellular back up for bone remodeling and repair, we suggest more investigations to be conducted regarding the correlation between the increasing number of patients suffering from osteoporosis and p-NP toxicity. Also, we strongly recommend WHO and local health organization to prevent industries of using p-NP in formulation of industrial products which may cause changes in proliferation and differentiation properties of stem cells.

  16. Role of {sup 11}C-choline PET/CT in the re-staging of prostate cancer patients with biochemical relapse and negative results at bone scintigraphy

    Energy Technology Data Exchange (ETDEWEB)

    Fuccio, Chiara; Castellucci, Paolo [Nuclear Medicine Unit, Department of Hematology Oncology and Laboratory Medicine, Azienda Ospedaliero - Universitaria di Bologna Policlinico Sant' Orsola - Malpighi, University of Bologna, Bologna (Italy); Schiavina, Riccardo [Urology Unit, Department of Specialist Surgery and Anaesthesiology, Azienda Ospedaliero - Universitaria di Bologna Policlinico Sant' Orsola - Malpighi, University of Bologna, Bologna (Italy); Guidalotti, Pier Luigi; Gavaruzzi, Gilberto; Montini, Gian Carlo; Nanni, Cristina [Nuclear Medicine Unit, Department of Hematology Oncology and Laboratory Medicine, Azienda Ospedaliero - Universitaria di Bologna Policlinico Sant' Orsola - Malpighi, University of Bologna, Bologna (Italy); Marzola, Maria Cristina [Department of Nuclear Medicine and PET/CT Centre, ' Santa Maria della Misericordia' Hospital, Via Tre Martiri 140, 45100 Rovigo (Italy); Rubello, Domenico, E-mail: domenico.rubello@libero.it [Department of Nuclear Medicine and PET/CT Centre, ' Santa Maria della Misericordia' Hospital, Via Tre Martiri 140, 45100 Rovigo (Italy); Fanti, Stefano [Nuclear Medicine Unit, Department of Hematology Oncology and Laboratory Medicine, Azienda Ospedaliero - Universitaria di Bologna Policlinico Sant' Orsola - Malpighi, University of Bologna, Bologna (Italy)

    2012-08-15

    Aim: to evaluate the utility of {sup 11}C-choline PET/CT in prostate cancer (PC) patients who have demonstrated a biochemical recurrence and a negative bone scintigraphy (BS). Materials and methods: 123 consecutive PC patients (mean age 67.6 years; range 54-83) with a biochemical relapse (mean PSA value 3.3 ng/mL; range 0.2-25.5) after radical prostatectomy (RP) were included in our retrospective study. Patients underwent a BS that resulted negative and a {sup 11}C-choline PET/CT within 4 months from BS (range: 1 day to 4 months; mean: 2.5 months). Validation of results was established by: (1) a positive biopsy, (2) a positive subsequent BS, CT or MR and (3) a normalization of {sup 11}C-choline uptake after systemic therapy or a progression of the disease. Results: {sup 11}C-choline PET/CT was positive in 42/123 patients (34.1%). {sup 11}C-choline PET/CT detected lesions in: bone (10 patients), lymph-nodes (20 patients), bone and lymph nodes (7 patients), bone and lung (1 patient), lymph-nodes and lung (1 patient), local relapse (3 patients). Overall, {sup 11}C-choline PET/CT showed a total of 30 unknown bone lesions in 18/123 (14.6%) patients. Conclusion: {sup 11}C-choline PET/CT showed a better sensitivity than BS in patients with biochemical relapse after RP: {sup 11}C-choline PET/CT detected unknown bone lesions in 18/123 (14.6%) patients.

  17. First Trimester Maternal Serum Screening Using Biochemical Markers PAPP-A and Free β-hCG for Down Syndrome, Patau Syndrome and Edward Syndrome

    OpenAIRE

    Shiefa, S.; Amargandhi, M.; Bhupendra, J.; Moulali, S.; Kristine, T.

    2012-01-01

    The first trimester screening programme offers a noninvasive option for the early detection of aneuploidy pregnancies. This screening is done by a combination of two biochemical markers i.e. serum free β-human chorionic gonadotrophin (free β-hCG) and pregnancy associated plasma protein A (PAPP-A), maternal age and fetal nuchal translucency (NT) thickness at 11 + 0–13 + 6 weeks of gestation. A beneficial consequence of screening is the early diagnosis or trisomies 21, 18 and 13. At 11 + 0–13 +...

  18. Hematological markers and biochemical profiles in terms of gender and age of captive collared peccaries (Tayassu tajacu) in eastern Amazon.

    Science.gov (United States)

    Jorge, E M; Silva, C J O; Ritter, R A; Monteiro, M V B; Albuquerque, N I; Kahwage, P R; Monteiro, F O B; Costa, C T C; Rahal, S C; Silva Filho, E

    2015-01-01

    Complete blood counts and blood biochemical analyses are laboratory tests that allow the monitoring of physiological condition, nutrition, and health in free-living or captive wild animals. When interpreting these tests, it is essential to compare the results with reference ranges that are suitable for the species. Few studies have been conducted on the hematological and biochemical characteristics of Tayassu tajacu, particularly for animals raised in the Amazon biome. The objectives of this study were to evaluate the influence of age and gender on the hematological and biochemical profiles of captive T. tajacu, and to establish reference intervals for these parameters. Complete blood counts and biochemical analyses were performed using manual methods and semi-automatic equipment, respectively. There were significant differences in relation to age in hematocrit and hemoglobin levels, and mean cell volumes, in captive T. tajacu. No basophils were observed, and the neutrophil:lymphocyte ratio was less than 1. Levels of total protein, urea, phosphorus, and alkaline phosphatase were significantly affected by age (P < 0.05). Gender did not affect any of the results. The hematological and biochemical parameters for this species were determined, and may be used as reference ranges for captive T. tajacu. PMID:26634461

  19. Impact of Black seed (Nigella sativa) extract on bone turnover markers in postmenopausal women with osteoporosis

    OpenAIRE

    Valizadeh, N; H.R Zakeri; G Amin ansafi; A. Shafiee; Sarkhail, P.; Heshmat, R; H Sereshti; B Larijani

    2010-01-01

    "n "n  "n  "nBackground and the purpose of the study: "nExperimental studies have shown that Ns (Nigella sativa) seeds oil can increase bone formation and may have anabolic effects on bone loss. This study was conducted to investigate the beneficial impacts of the oil of Black seeds on bone turnover in osteoporotic postmenopausal women. "nMaterials and methods: A placebo controlled pilot study was carried out on 15 postmenopausal osteoporotic wo...

  20. Effects of a low-fat diet with antioxidant supplementation on biochemical markers of multiple sclerosis long-term care residents

    Directory of Open Access Journals (Sweden)

    Elba Mauriz

    2013-12-01

    Full Text Available Introduction: Multiple sclerosis (MS treatment options are primarily limited to immunomodulatory therapies in MS non-progressive forms. Nutrition intervention studies suggest that diet may be considered as a complementary treatment to control disease progression. Therefore, dietary intervention may help to improve wellness and ameliorate symptoms of MS patients. Objectives: To assess the effect of a low-fat diet with antioxidant supplementation on biochemical markers of institutionalized patients with progressive forms of multiple sclerosis. Methods: A randomized prospective placebo-controlled study involving 9 participants, 5 of them assigned to the intervention group (low-fat diet and antioxidant supplementation and the other 4 to the placebo group (low-fat diet. The effect of the dietary intervention, involving diet modification and antioxidant supplementation, was examined for 42 days by measuring anthropometric, biochemical parameters and oxidative stress markers in blood at baseline (day 0, intermediate (day 15 and end (day 42 stages of the treatment. Results: The intervention group obtained C reactive protein levels significantly lower than those observed in the corresponding placebo group at the end of the study. Oxidative stress and inflammatory markers isoprostane 8-iso-PGF2α and interleukine IL-6 values also diminished after dietary intervention in the intervention group. Catalase activity increased significantly in the intervention group prior antioxidant supplementation. No significant differences were observed in other oxida-tive stress markers. Conclusions: The results suggest that diet and dietary supplements are involved in cell metabolism modulation and MS-related inflammatory processes. Consequently, low fat diets and antioxidant supplements may be used as complementary therapies for treatment of multiple sclerosis.

  1. Evaluation of techniques for human bone decalcification and amplification using sixteen STR markers

    Directory of Open Access Journals (Sweden)

    Ajay Balayan

    2015-03-01

    Full Text Available Efficient DNA extraction procedures, as well as accurate DNA amplification, are critical steps involved in the process of successful DNA analysis of skeletal samples. Unfortunately, at present there is no infallible method to recover DNA from highly degraded samples due to variations in DNA yield from larger bone fragments, which may be attributed to heterogeneity within bones. We evaluated two different protocols for bone decalcification in the DNA extraction procedure for bones. This study is important for analysis of challenging forensic samples.

  2. Does methamphetamine affect bone metabolism?

    International Nuclear Information System (INIS)

    There is a close relationship between the central nervous system activity and bone metabolism. Therefore, methamphetamine (METH), which stimulates the central nervous system, is expected to affect bone turnover. The aim of this study was to investigate the role of METH in bone metabolism. Mice were divided into 3 groups, the control group receiving saline injections, and the 5 and 10 mg/kg METH groups (n = 6 in each group). All groups received an injection of saline or METH every other day for 8 weeks. Bone mineral density (BMD) was assessed by X-ray computed tomography. We examined biochemical markers and histomorphometric changes in the second cancellous bone of the left femoral distal end. The animals that were administered 5 mg/kg METH showed an increased locomotor activity, whereas those receiving 10 mg/kg displayed an abnormal and stereotyped behavior. Serum calcium and phosphorus concentrations were normal compared to the controls, whereas the serum protein concentration was lower in the METH groups. BMD was unchanged in all groups. Bone formation markers such as alkaline phosphatase and osteocalcin significantly increased in the 5 mg/kg METH group, but not in the 10 mg/kg METH group. In contrast, bone resorption markers such as C-terminal telopeptides of type I collagen and tartrate-resistant acid phosphatase 5b did not change in any of the METH groups. Histomorphometric analyses were consistent with the biochemical markers data. A significant increase in osteoblasts, especially in type III osteoblasts, was observed in the 5 mg/kg METH group, whereas other parameters of bone resorption and mineralization remained unchanged. These results indicate that bone remodeling in this group was unbalanced. In contrast, in the 10 mg/kg METH group, some parameters of bone formation were significantly or slightly decreased, suggesting a low turnover metabolism. Taken together, our results suggest that METH had distinct dose-dependent effects on bone turnover and that

  3. Establishing quiescence in human bone marrow stem cells leads to enhanced osteoblast marker expression

    DEFF Research Database (Denmark)

    Harkness, Linda; Rumman, Mohammad; Kassem, Moustapha;

    expression profiling of the cells demonstrated down-regulation of cyclin (CCNA2, CCND1, CCNE1, CCNB1) and proliferation markers (Ki67) markers during G0 and up-regulation of the osteogenic genes RUNX2 and OPN. RT-PCR analysis of osteogenic differentiation of cells post G0 demonstrated an increase...

  4. GENETIC MARKERS OF LOW BONE MINERAL DENSITY IN PATIENTS WITH CYSTIC FIBROSIS.

    Directory of Open Access Journals (Sweden)

    Tatjana Jakovska

    2015-03-01

    Full Text Available Introduction: failure to maintain bone mass density is a major problem in patients with cystic fibrosis (CF. CF is due to mutations in the CFTR gene and other genes may contribute to modifying the disease. Genetic and environmental factors may play a role in determining the variability of bone mass. Aim of the study: to analyse the association between polymorphic variants of genes considered to be risk factors of bone metabolism disturbances and decreased bone mineral density (BMD in children and adults with CF in R. Macedonia. Materials and methods: the study included 80 clinically stable CF patients (age range 5-36y, who regularly attended the CF center at the Pediatric Clinic in Skopje, Macedonia. Three candidate genes likely associated with BMD variability were studied: the vitamin D receptor (VDR gene, the estrogen receptor alpha (ESR1 and the type I alpha I collagen (COLIA1 gene. A complete bone and CF evaluation was obtained for all patients: 55 had normal BMD (group 1, 17 were osteopenic (group 2 and 8 were osteoporotic (group 3. Results: Low bone mineral density (Z score < -1SD was found in 31.25% patients and in 10% of them BMD was below -2SD. Patients with low BMD had worse BMI, FEV1 and more severe symptoms of CF. No significant correlation was found between COLIA1 and VDR polymorphisms and BMD. Conclusion: There was no evidence that the genes under study may modulate bone phenotype in CF.

  5. A New Data Analysis System to Quantify Associations between Biochemical Parameters of Chronic Kidney Disease-Mineral Bone Disease.

    Directory of Open Access Journals (Sweden)

    Mariano Rodriguez

    Full Text Available In hemodialysis patients, deviations from KDIGO recommended values of individual parameters, phosphate, calcium or parathyroid hormone (PTH, are associated with increased mortality. However, it is widely accepted that these parameters are not regulated independently of each other and that therapy aimed to correct one parameter often modifies the others. The aim of the present study is to quantify the degree of association between parameters of chronic kidney disease and mineral bone disease (CKD-MBD.Data was extracted from a cohort of 1758 adult HD patients between January 2000 and June 2013 obtaining a total of 46.141 records (10 year follow-up. We used an advanced data analysis system called Random Forest (RF which is based on self-learning procedure with similar axioms to those utilized for the development of artificial intelligence. This new approach is particularly useful when the variables analyzed are closely dependent to each other.The analysis revealed a strong association between PTH and phosphate that was superior to that of PTH and Calcium. The classical linear regression analysis between PTH and phosphate shows a correlation coefficient is 0.27, p<0.001, the possibility to predict PTH changes from phosphate modification is marginal. Alternatively, RF assumes that changes in phosphate will cause modifications in other associated variables (calcium and others that may also affect PTH values. Using RF the correlation coefficient between changes in serum PTH and phosphate is 0.77, p<0.001; thus, the power of prediction is markedly increased. The effect of therapy on biochemical variables was also analyzed using this RF.Our results suggest that the analysis of the complex interactions between mineral metabolism parameters in CKD-MBD may demand a more advanced data analysis system such as RF.

  6. The effect of semelil (angipars®) on bone resorption and bone formation markers in type 2 diabetic patients

    OpenAIRE

    Hasani-Ranjbar Shirin; Jouyandeh Zahra; Qorbani Mostafa; Hemmatabadi Mahbubeh; Larijani Bagher

    2012-01-01

    Abstract Background and purpose of the study Diabetes mellitus has been recognized as a major risk factor for osteoporosis in which bone turnover is affected by different mechanisms. As the morbidity, mortality and financial cost related to osteoporosis are expected to rise in Iran in coming years, and considering the efficacy of Angipars® for improvement of different ulcers which made it a new herbal drug in diabetic foot ulcer, there is a need to evaluate the effect of this new drug on diff...

  7. The Efect of Semelil (AngiparsW) on Bone Resorption and Bone Formation Markers in Type 2 Diabetic Patients

    OpenAIRE

    Shirin Hasani-Ranjbar; Zahra Jouyandeh; Mostafa Qorbani; Mahbubeh Hemmatabadi; Bagher Larijani

    2012-01-01

    Background and purpose of the study: Diabetes mellitus has been recognized as a major risk factor for osteoporosis in which bone turnover is affected by different mechanisms. As the morbidity, mortality and financial cost related to osteoporosis are expected to rise in Iran in coming years, and considering the efficacy of AngiparsW for improvement of different ulcers which made it a new herbal drug in diabetic foot ulcer, there is a need toevaluate the effect of this new drug on different org...

  8. Hypocaloric high-protein diet improves clinical and biochemical markers in patients with nonalcoholic fatty liver disease (NAFLD)

    OpenAIRE

    Sebastião Mauro Bezerra Duarte; Joel Faintuch; José Tadeu Stefano; Maria Beatriz Sobral de Oliveira; Daniel Ferraz de Campos Mazo; Fabiola Rabelo; Denise Vanni; Monize Aydar Nogueira; Flair José Carrilho; Claudia Pinto Marques Souza de Oliveira

    2014-01-01

    Objective: To investigate the role of hypocaloric high-protein diet, a prospective clinical study was conducted in NAFLD patients. Research methods and procedures: Pre-versus post-interventional data were analyzed in 48 stable NAFLD patients (submitted to a hypocaloric high-protein diet during 75 days. Variables included anthropometrics (body mass index/ BMI and waist circumference/WC), whole-body and segmental bioimpedance analysis and biochemical tests. Diet compliance was assessed by inter...

  9. Relationship between Mandibular BMD and Bone Turnover Markers in Osteoporosis Diagnosis

    OpenAIRE

    SM Eshaghi; A Hossein-nezhad; Zh Maghbooli; Larijani, B

    2008-01-01

    "nBackground: The purpose of the present study was to determine mandible bone mineral density and evaluate its correlation with central BMD and bone turnover."nMethods: Two hundred and seven postmenopausal women were enrolled in this cross-sectional study. After receiving the tes­timonials, questionnaires were completed and physical exams were done. For all participants central BMD was measured through DXA method. In each women periapical radiography performed in two regions...

  10. Bone turnover markers in medicamentous and physiological hyperprolactinemia in female rats

    OpenAIRE

    Radojković Danijela; Pešić Milica; Ristić Tatjana

    2014-01-01

    Background/Aim. There is a lack of data on the effects of prolactin on calcium metabolism and bone turnover in hyperprolactinemia of various origins. The aim of this study was to compare the influence of medicamentous and physiological hyperprolactinemia on bone turnover in female rats. Methods. Experimental animals (18 weeks old, Wistar female rats) were divided as follows: the group P - 9 rats, 3 weeks pregnant; the group M3-10 rats that were intramuscula...

  11. AMINOACYL FUCOSIDES AS POSSIBLE BIOCHEMICAL MARKERS OF TUMORIGENIC AND METASTATIC POTENTIAL IN HERPES SIMPLEX VIRUS TYPE 2-TRANSFORMED RAT CELLS

    Science.gov (United States)

    Two classes of aminoacyl fucosides termed F13 and F14 were studied as possible markers of tumorigenic and metastatic potential in herpes simplex virus type 2 transformed rat cells. In the present study, clonal cell lines of transformed highly tumorigenic and metastatic (t-REF-G-2...

  12. Monitoring pollution in Tunisian coasts using a scale of classification based on biochemical markers in worms Nereis (Hediste) diversicolor.

    Science.gov (United States)

    Bouraoui, Zied; Banni, Mohamed; Chouba, Lassad; Ghedira, Jihen; Clerandeau, Cristelle; Jebali, Jamel; Narbonne, Jean Francois; Boussetta, Hamadi

    2010-05-01

    This paper aims to assess the marine environment quality along the Tunisian coasts using a statistical approach based on biomarkers response in the polychaete worms Nereis (Hediste) diversicolor. Worms were collected from six sites: Bizerta Lagoon, Gargour, Nakta, Mahres, Skhira and from Teboulba considered as a reference site. The biomarkers selected in this work were (1) the activities of cytochrome P450-dependent NADPH cytochrome c reductase (NADPH red) as phase I enzyme, (2) glutathione S-transferase as phase II enzyme and (3) the acetylcholinesterase activity as neurotoxicity marker. Oxidative stress was evaluated using catalase activity and malondialdehyde accumulation. For each biomarker, a discriminatory factor was calculated and a response index was allocated. For each site, a multi-marker pollution index was calculated as the sum of the response index of each of the five more discriminating biomarkers. The results show differences between sites compared with the reference samples. The multi-marker approach confirms that worms from Bizerta and Mahress have been submitted to highly polluted environment. Mahress shows the highest multi-marker pollution index, indicating a highly contamination status. PMID:19404756

  13. Changes in bone mineral density and bone turnover markers in obese women after short -term weight loss therapy during a 5-year follow-up

    Directory of Open Access Journals (Sweden)

    Jerzy Chudek

    2010-07-01

    Full Text Available INTRODUCTION: The protective effect of adipocity on bone metabolism has not been confirmed during long-term follow-up. It is not known whether the rate of bone turnover and changes in mineral metabolism in obese people result from endocrine properties of the adipose tissue or merely the mechanical load. OBJECTIVES: The aim of the study was to evaluate bone and calcium-phosphorus metabolism in obese women during a 5-year follow-up. PATIENTS AND METHODS: The study involved 47 obese women who underwent a 3-month weight loss therapy. We evaluated changes in the serum levels of parathormone (PTH, calcidiol (25(OHD3, collagen type I crosslinked C-telopeptide (CTx-I, osteocalcin, total calcium, inorganic phosphates, and in bone mineral density. The control group consisted of 17 healthy women with proper body weight. RESULTS: We observed a similar decrease in bone mineral density (BMD in the lumbar spine and femoral neck, and a comparable decrease in the serum levels of CTx-I and osteocalcin in both groups during the 5-year follow-up. Changes in serum PTH levels were not statistically significant. In obese women, a nonsignificant increase in the serum level of 25(OHD3 was observed as early as after a 3-month weight loss therapy and during follow-up. In controls, serum 25(OHD3 levels tended to decrease. During follow-up, the number of obese patients with disturbances in vitamin D metabolism decreased from 78.7% to 53.2% (P = 0.01. Such disturbances were observed in 35.3% of the control group. In obese patients, there was a positive correlation between the change in body mass and BMD in the proximal femur (r = 0.279, P = 0.04. In controls, there was a positive correlation between the change in body mass and BMD in the lumbar spine (r = 0.477, P = 0.05. CONCLUSIONS: In obese women who underwent weight loss therapy, the levels of bone turnover markers decreased and abnormal vitamin D metabolism was still observed during the 5-year follow-up.

  14. 骨代谢相关血液生化指标的研究进展%Study on Blood Biochemical Indicators Related to Bone Metabolism

    Institute of Scientific and Technical Information of China (English)

    杜伟; 李春风; 谷大海; 徐志强; 贾俊静; 陈小波

    2011-01-01

    The bone metabolism includes the two processes of bone formation and bone resorption, which is influenced by many facters, hererity, nutrition, environment, gender and incretion are the key regulatory factors. When the bone resorption significantly exceeds formations the activity of the osteoblasts cannot keep up with the activity of the osteoclasts, and then resulting in bone loss rapidly and bone density reducing. The process of bone metabolism is affected by incretion, many biochemical indexes of blood play an important role in the study of osteopathy. Many studies have reported biochemical parameters of blood related to bone metabolism. This paper summarize the effects of serum calcium and phosphorus, parathyroid hormone, 1,25-(OH)2D3interleukin, ALP on the bone formation and resorption.%骨代谢包括骨合成和骨吸收两个过程.受到很多因素的影响,遗传、营养、环境、性别及内分泌等都是关键调节因素.当骨吸收过程大于骨合成过程,导致骨量流失,骨密度降低,进一步发展为骨质疏松症.骨代谢过程受到内分泌的影响,很多骨代谢血液生化指标对骨病的研究起到重要作用.近年来,国内外大量的研究报道了与骨代谢相关的血液生化指标.作者着重对血钙与血磷、甲状旁腺激素、1,25-二羟维生素D3、白细胞介素、血清总碱磷酶和骨碱磷酶等骨代谢血液生化指标对骨形成和分解的影响进行了综述.

  15. Longitudinal study on osteoarthritis and bone metabolism

    OpenAIRE

    L Postiglione; Savastano, S; A. Scognamiglio; G. Nutile; Carpinelli, A; Esposito, A.; del Puente, A; Padula, S.; Oriente, P

    2011-01-01

    Objective: The relationship between Osteoarthritis (OA) and Osteoporosis (OP) is not well defined due to lacking in longitudinal data, mainly regarding correlations between biochemical factors and OA incidence. Aim of this paper was to investigate the predictive value for OA incidence of bone mass variations and of selected biochemical markers in healthy women participating in a population-based longitudinal study carried out in Naples (Italy). Subjects and Methods: High completion rate (85.2...

  16. Effect of hyperbilirubinaemia on neurocognitive, renal, bone and cardiovascular markers in HIV infection treated with boosted protease inhibitors

    Directory of Open Access Journals (Sweden)

    Tristan J Barber

    2014-11-01

    Full Text Available Introduction: Use of some protease inhibitors (PI is associated with unconjugated hyperbilirubinaemia (HBR, due to inhibition of UGT1A1. As observed in Gilbert's syndrome, HBR may have antioxidant and anti-inflammatory effects. Inflammation may be relevant to neurocognitive (NC impairment, cardiovascular, renal and bone co-morbidities in HIV infection. This study aimed to analyse correlations between antiretroviral associated HBR and NC impairment as well as renal, bone and cardiovascular parameters. Material and Methods: This cross-sectional study included 101 HIV-1-infected individuals stable (>6 months on antiretroviral regimens including tenofovir/emtricitabine or abacavir/lamivudine plus a ritonavir-boosted PI. Patients with >grade 2 HBR were compared to patients with normal bilirubin on NC data collected using CogState. An overall composite score was calculated for each subject. Two-tail P-values were calculated using the Mann-Whitney U test. We measured the following parameters in all participants: Bone – Calcaneal Stiffness Index (CSI, blood bone markers, calculated FRAX score; CV – vascular endothelial function markers (iCAM, vCAM, lipid fractions and sub fractions (Total, HDL and LDL cholesterol, triglycerides, ApoB, Carotid Intimal Thickness (CIT, Pulse Wave Velocity (PWV, glucose and insulin for calculation of HOMA-IR, IL-6, d-dimer, uric acid, and hsCRP; Renal – urea and electrolytes (U&E, urinary protein/creatinine ratio (uPCR, urinary retinal binding protein (RBP/creatinine ratio. Results: Forty-three participants had normal bilirubin (NBR levels and 35 had high bilirubin (HBR; >2.5 times upper limit; the remaining 23 patients had intermediate bilirubin levels or violated the protocol. The mean age of participants was 48 years; 93% were male and 84% Caucasian. Mostly no significant differences were seen in any of the markers when comparing the NBR and HBR groups. Two component tests of the CogState were seen to be different

  17. Paget's disease diagnosed on bone scintigraphy: Case report and literature review

    International Nuclear Information System (INIS)

    Paget's disease of bone is a chronic bone remodeling disorder. Although most patients are asymptomatic, a variety of symptoms and complications may develop directly from bone involvement or secondarily due to compression by the expanded bone. It is usually diagnosed from radiological and biochemical abnormalities or in advanced cases it becomes clinically evident due to the expanded bone. We report a case of Paget's disease which was detected incidentally during evaluation of nephrolithiasis and polyarthritis but had normal radiographs and normal biochemical markers

  18. Instrumental and laboratory assessment of stressful remodelling processes in bone tissue at total hip replacement

    Directory of Open Access Journals (Sweden)

    E.V. Karjakina

    2010-06-01

    Full Text Available Research objective is to estimate stressful remodelling features of bone tissue according to the densitometry data and to the level of biochemical markers of bone resorption and formation in total hip replacement (THR. Bone tissue mineral density (BTMD, condition of calcium-phosphoric metabolism and biochemical markers of bone formation (osteocalcin and bone isoenzyme of alkaline phosphatase and resorption (С-terminal bodypeptide of the I type collagen have been determined in 52 patients with coxarthrosis of ll-lll stages with marked joint dysfunction before and after THR. The control group included 24 donors. The data were considered to be reliable when the probability index was р<0,05. The reliable (р<0,05 change of BTMD was determined only in 3-6 months after the operation, whereas the change of biochemical markers of remodeling had already been done after 1,5-3 months, allowing to define the group of patients with obvious negative bone balance: strong predominance of resorption processes without compensation of the subsequent adequate osteogenesis, that subsequently could lead to significant bone tissue deficiency in the area adjacent to the endoprosthesis. Changes of indices of calcium-phosphoric metabolism were not certain during the investigation term. ln conclusion it is to state that biochemical markers of remodeling in comparison with BTMD allow to estimate objectively features of adaptive bone tissue remodeling after THR in earlier periods and to define group of patients with sharp intensification of metabolism and obvious negative bone balance

  19. Matrix metalloproteinase-9-mediated type III collagen degradation as a novel serological biochemical marker for liver fibrogenesis

    DEFF Research Database (Denmark)

    Veidal, Sanne S; Vassiliadis, Efstathios; Barascuk, Natasha;

    2010-01-01

    During fibrogenesis in the liver, in which excessive remodelling of the extracellular matrix (ECM) occurs, both the quantity of type III collagen (CO3) and levels of matrix metalloproteinases (MMPs), including MMP-9, increase significantly. MMPs play major roles in ECM remodelling, via their...... activity in the proteolytic degradation of extracellular macromolecules such as collagens, resulting in the generation of specific cleavage fragments. These neo-epitopes may be used as markers of fibrosis....

  20. Serum thymidine kinase--a marker of bone marrow toxicity during treatment with zidovudine

    DEFF Research Database (Denmark)

    Pedersen, C; Ingeberg, S; Teglbjaerg, L S

    1989-01-01

    0.01) in the zidovudine group, whereas it remained stable in the placebo (control) group. On the basis of this observation, the value of S-TK measurements as a predictor of bone marrow toxicity during zidovudine therapy was investigated in 42 patients with AIDS or ARC who received zidovudine as part...... of their usual treatment. There was a significant association between S-TK, haemoglobin and neutrophil counts measured after the first 4 weeks of therapy and the risk of developing bone marrow toxicity during the following 6 months. Combined, measurements of S-TK and neutrophil counts seem to be well...... suited for the identification of patients who have a high probability for developing bone marrow toxicity during zidovudine treatment....

  1. Effect of odanacatib on bone turnover markers, bone density and geometry of the spine and hip of ovariectomized monkeys: a head-to-head comparison with alendronate.

    Science.gov (United States)

    Williams, Donald S; McCracken, Paul J; Purcell, Mona; Pickarski, Maureen; Mathers, Parker D; Savitz, Alan T; Szumiloski, John; Jayakar, Richa Y; Somayajula, Sangeetha; Krause, Stephen; Brown, Keenan; Winkelmann, Christopher T; Scott, Boyd B; Cook, Lynn; Motzel, Sherri L; Hargreaves, Richard; Evelhoch, Jeffrey L; Cabal, Antonio; Dardzinski, Bernard J; Hangartner, Thomas N; Duong, Le T

    2013-10-01

    Odanacatib (ODN) is a selective and reversible Cathepsin K (CatK) inhibitor currently being developed as a once weekly treatment for osteoporosis. Here, effects of ODN compared to alendronate (ALN) on bone turnover, DXA-based areal bone mineral density (aBMD), QCT-based volumetric BMD (vBMD) and geometric parameters were studied in ovariectomized (OVX) rhesus monkeys. Treatment was initiated 10 days after ovariectomy and continued for 20 months. The study consisted of four groups: L-ODN (2 mg/kg, daily p.o.), H-ODN (8/4 mg/kg daily p.o.), ALN (15 μg/kg, twice weekly, s.c.), and VEH (vehicle, daily, p.o.). L-ODN and ALN doses were selected to approximate the clinical exposures of the ODN 50-mg and ALN 70-mg once-weekly, respectively. L-ODN and ALN effectively reduced bone resorption markers uNTx and sCTx compared to VEH. There was no additional efficacy with these markers achieved with H-ODN. Conversely, ODN displayed inversely dose-dependent reduction of bone formation markers, sP1NP and sBSAP, and L-ODN reduced formation to a lesser degree than ALN. At month 18 post-OVX, L-ODN showed robust increases in lumbar spine aBMD (11.4%, p<0.001), spine trabecular vBMD (13.7%, p<0.001), femoral neck (FN) integral (int) vBMD (9.0%, p<0.001) and sub-trochanteric proximal femur (SubTrPF) int vBMD, (6.4%, p<0.001) compared to baseline. L-ODN significantly increased FN cortical thickness (Ct.Th) and cortical bone mineral content (Ct.BMC) by 22.5% (p<0.001) and 21.8% (p<0.001), respectively, and SubTrPF Ct.Th and Ct.BMC by 10.9% (p<0.001) and 11.3% (p<0.001) respectively. Compared to ALN, L-ODN significantly increased FN Ct. BMC by 8.7% (p<0.05), and SubTrPF Ct.Th by 7.6% (p<0.05) and Ct.BMC by 6.2% (p<0.05). H-ODN showed no additional efficacy compared to L-ODN in OVX-monkeys in prevention mode. Taken together, the results from this study have demonstrated that administration of ODN at levels which approximate clinical exposure in OVX-monkeys had comparable efficacy to ALN in

  2. MMP Mediated Degradation of Type VI Collagen Is Highly Associated with Liver Fibrosis - Identification and Validation of a Novel Biochemical Marker Assay

    DEFF Research Database (Denmark)

    Veidal, Sanne Skovgard; Karsdal, Morten Asser; Vassiliadis, Efstathios; Nawrocki, Arkadiusz; Larsen, Martin Rossel; Quoc, HTN; Hägglund, Per; Luo, Yunyun; Zheng, Qinlong; Vainer, Ben; Leeming, Diana Julie

    2011-01-01

    Background and Aims: During fibrogenesis, in which excessive remodeling of the extracellular matrix occurs, both the quantity of type VI collagen and levels of matrix metalloproteinases, including MMP-2 and MMP-9, increase significantly. Proteolytic degradation of type VI collagen into small...... fragments, so-called neo-epitopes, may be specific biochemical marker of liver fibrosis. The aim of this study was to develop an ELISA detecting a fragment of type VI collagen generated by MMP-2 and MMP-9, and evaluate this assay in two preclinical models of liver fibrosis. Methods: Mass spectrometric...... analysis of cleaved type VI collagen revealed a large number of protease-generated neo-epitopes. A fragment unique to type VI collagen generated by MMP-2 and MMP-9 was selected for ELISA development. The CO6-MMP assay was evaluated in two rat models of liver fibrosis: bile duct ligation (BDL) and carbon...

  3. Non-invasive markers of bone turnover and plasma cytokines differ in osteoporotic patients with multiple myeloma and monoclonal gammopathies of undetermined significance

    International Nuclear Information System (INIS)

    Multiple myeloma (MM) is a common malignancy manifest by bone marrow infiltration with malignant plasma cells, the production of a paraprotein and lytic bone lesions. Monoclonal gammopathy of undetermined significance (MGUS) is assumed to be the precursor of clinically apparent myeloma, with one or more additional genetic events being required for progression to MM. Elderly patients presenting with osteoporosis and skeletal fractures are not infrequently found to have elevated serum paraprotein concentrations suggestive of either MM or MGUS. Differentiating between these two clinical disorders may prove challenging, despite bone marrow biopsy evidence of plasmacytosis. The underlying pathogenesis of bone loss in these conditions is complex and may be attributed to cytokine-induced osteoclastogenesis coupled with increased osteoclastic bone resorption. In the present study, various markers of bone turnover and plasma cytokines were measured in order to determine whether they may be of value in differentiating between these two disorders. It is concluded that the urinary deoxypyridinoline excretion rate is a sensitive marker of bone resorption and of underlying bone disease activity. It may also help to differentiate between MM and MGUS

  4. Genetic diversity of notary-national uniform rape seed yield trial and brassica napus varieties using raped markers and biochemical analysis

    International Nuclear Information System (INIS)

    In Pakistan, Brassica is the second most important source of oil after cotton. Seventeen NURYT (National Uniform Rape Seed Yield Trial) lines and 5 Brassica napus varieties were assessed through RAPD primers and biochemical assays. Seven different Randomly Amplified Polymorphic DNA markers (RAPD) were employed during the present study. A total of 30 RAPD bands were scored by these primers. Size of the scorable fragments ranged from approximately 250 to 2000 bp. Diversity index was estimated to be 42%. Mean genetic distance estimates ranged between 0.10 and 1.00. For the assessment of various biochemical parameters, Near Infrared Reflectance Spectroscopy (NIRS) was used. Oil content ranged from 38.30 to 49% and protein content from 19.80 to 29.10% among the 22 genotypes. Maximum protein content was assayed in genotype RBN 3046 while minimum in Hyola 405. Glucosinolates ranged between 2 and 84% for genotype CRH 60/08 and CRH05/08 showing the maximum and minimum values respectively. Oleic acid (52 to 72.5%), linolenic acid (7.07 and 9.90%) and erucic acid content (9.57 to 38.3%) was also recorded during the present study. (author)

  5. Immunological detection of osteocalcin in meat and bone meal: a novel heat stable marker for the investigation of illegal feed adulteration

    OpenAIRE

    Kreuz, Grit; Zagon, Jutta; Broll, Hermann; Bernhardt, Christian; Linke, Bettina; Lampen, Alfonso

    2012-01-01

    Abstract A sandwich ELISA was developed for the detection of bovine meat and bone meal (BMBM) in feed, based on polyclonal rabbit antibodies raised against the synthetic N-terminal amino acid sequence 1?9 (YLDHWLGAP) of bovine osteocalcin. To set up a sandwich ELISA pair, a commercial mouse monoclonal capture antibody binding to a highly conserved epitope in the mid-fragment of the peptide was employed. It is shown that the bone marker osteocalcin is immunologically well detectable...

  6. Relationship between Mandibular BMD and Bone Turnover Markers in Osteoporosis Diagnosis

    Directory of Open Access Journals (Sweden)

    SM Eshaghi

    2008-11-01

    Full Text Available "nBackground: The purpose of the present study was to determine mandible bone mineral density and evaluate its correlation with central BMD and bone turnover."nMethods: Two hundred and seven postmenopausal women were enrolled in this cross-sectional study. After receiving the tes­timonials, questionnaires were completed and physical exams were done. For all participants central BMD was measured through DXA method. In each women periapical radiography performed in two regions of mandible. The plain x-ray films were scanned using a standard film digitizer and standardized in size and intensity using a calibration step wedge phantom. The phantom was placed upper site in film cover. After the film digitized, the developed Matlab software was used to image proc­essing."nResults: Mean age and body mass index of participants were 54.6±6.3 years and 28.57±4.9 kg/m2 respectively. Prevalence of osteoporosis and osteopenia in one of regions in central DXA were 17.4% and 48.2% respectively. There was strong cor­relation between mandible and total femur BMD (P= 0.001, r= 0.80.In osteoporotic patients bone loss in mandible BMD was more than central DXA (P= 0.02."nConclusion: The main advantage of the proposed mandible BMD is to help clinicians make more accurate evaluation of Bone loss. Based on developed the suggested system a routine dental X-ray could be used to screen for bone loss.

  7. Leukocytes as risk markers for cardiovascular disease in adolescents: association with birth characteristics, nutritional status and biochemical tests

    Science.gov (United States)

    do Prado, Pedro Paulo; de Faria, Franciane Rocha; de Faria, Eliane Rodrigues; Franceschini, Sylvia do Carmo Castro; Priore, Silvia Eloiza

    2016-01-01

    Abstract Objective: To evaluate the correlation between the number of leukocytes and cardiovascular risks associated with birth characteristics, nutritional status and biochemical tests. Methods: Cross-sectional study developed with 475 adolescents, born between 1992 and 2001, in the municipality of Viçosa (MG). Maternal medical records were analyzed in the hospital units, and the following was recorded: birth weight and length, head circumference, chest circumference, Apgar score, gestational age. In adolescents, body mass index, skinfold thickness, body composition, blood count, biochemical tests and clinical variables were also assessed. The statistical analyses was carried out using Statistical Package for Social Sciences (SPSS) version 20.0 and Data Analysis and Statistical Software (STATA) with Kruskal–Wallis, Mann–Whitney, chi-square or Fisher's exact tests and Linear Regression. Significance level was set at α<0.05. The study was approved by the Research Ethics Committee of UFV for studies with human subjects. Results: Weight and birth length, head and chest circumference were higher among boys. In adolescents, the number of leukocytes was higher in individuals with excess weight and body fat and high adiposity index, waist-to-height ratio and waist circumference. Only altered triglycerides showed differences between leukocyte medians. Regardless of the anthropometric variable of the final regression model, the stage of adolescence, number of platelets, eosinophils, monocytes and lymphocytes were associated with the increase in leukocytes. Conclusions: The birth variables were not associated with changes in leukocyte numbers, whereas the anthropometric variables were good indicators for a higher leukocyte count, regardless of the stage of adolescence and gender. PMID:26572104

  8. Leukocytes as risk markers for cardiovascular disease in adolescents: association with birth characteristics, nutritional status and biochemical tests

    Directory of Open Access Journals (Sweden)

    Pedro Paulo do Prado Junior

    2016-03-01

    Full Text Available Abstract Objective: To evaluate the correlation between the number of leukocytes and cardiovascular risks associated with birth characteristics, nutritional status and biochemical tests. Methods: Cross-sectional study developed with 475 adolescents, born between 1992 and 2001, in the municipality of Viçosa (MG. Maternal medical records were analyzed in the hospital units, and the following was recorded: birth weight and length, head circumference, chest circumference, Apgar score, gestational age. In adolescents, body mass index, skinfold thickness, body composition, blood count, biochemical tests and clinical variables were also assessed. The statistical analyses was carried out using Statistical Package for Social Sciences (SPSS version 20.0 and Data Analysis and Statistical Software (STATA with Kruskal–Wallis, Mann–Whitney, chi-square or Fisher's exact tests and Linear Regression. Significance level was set at α<0.05. The study was approved by the Research Ethics Committee of UFV for studies with human subjects. Results: Weight and birth length, head and chest circumference were higher among boys. In adolescents, the number of leukocytes was higher in individuals with excess weight and body fat and high adiposity index, waist-to-height ratio and waist circumference. Only altered triglycerides showed differences between leukocyte medians. Regardless of the anthropometric variable of the final regression model, the stage of adolescence, number of platelets, eosinophils, monocytes and lymphocytes were associated with the increase in leukocytes. Conclusions: The birth variables were not associated with changes in leukocyte numbers, whereas the anthropometric variables were good indicators for a higher leukocyte count, regardless of the stage of adolescence and gender.

  9. The usefulness of whole body bone mineral densitometry in the osteopenia of preterm infants: comparison with the wrist radiography and biochemical parameters

    International Nuclear Information System (INIS)

    To evaluate the usefulness of whole body bone mineral densitometry in the diagnosis of frequent osteopenia of preterm infants by comparison with the wrist radiographs and biochemical parameters. From January 1995 to January 1996, we obtained whole body bone mineral density(BMD) studies using dual energy X-ray absorptiometry(DXA) and wrist radiographs of 39 preterm infants. They were divided into three groups according to birth weight, under 1500g, 1501g to 2000g and above 2000g, and four grades of skeletal change, as seen on wrist radiography, according to the scoring method of Koo et al. Groups of birth weight and grades of skeletal change were then correlated with whole body BMD and biochemical parameters. For comparison, normal data were obtained from 13 infants born at full term. Data were analyzed by one way analysis of variation(ANOVA) and correlation and regression analysis. A p-value of less than 0.05 was considered significant. Whole body BMDs were significantly lower in the more premature and smaller birth weight infants(r=0.77, p=0.0000), and in the higher grade of skeletal change(r-0.5276, p=0.0000). Aggravated skeletal changes were found in infants with lower birth weight(r= -0.3822, p=0.01). Interobserver variation in grading skeletal change was 42.9%, and intraobserver variation was 18.4%. Biochemical parameters such as serum calcium, phosphate, alkaline phosphatase, parathromone, calcitonin and 25-hydroxy-vitamine D did not vary significantly according to either birth weight or skeletal change(p > 0.05). Premature osteopenia is more effectively diagnosed by measuring whole body BMD using DXA than by grading radiographical skeletal change or by biochemical parameters

  10. The Effects of Florfenicol on the Values of Serum Tumor Necrosis Factor-α and Other Biochemical Markers in Lipopolysaccharide-Induced Endotoxemia in Brown Trout

    Directory of Open Access Journals (Sweden)

    Ayse Er

    2014-01-01

    Full Text Available The aim of the present study was to determine the effects of florfenicol on the expected changes in sTNF-α, damage markers of the liver and kidney, and the lipid metabolism parameters in endotoxemic brown trout. Ninety-six brown trout were included in this study. After six of the fish were reserved as the control group, the remaining 90 fish were divided equally into 3 groups as follows: LPS (2 mg/kg, IP, LPS (2 mg/kg, IP + florfenicol (40 mg/kg, IM, and florfenicol (40 mg/kg, IM. Blood samples were obtained from the tail of the fish at 1.5, 3, 6, 10, and 24 hours. The levels of sTNF-α were determined by ELISA and biochemical markers were evaluated with an autoanalyzer. A significant increase was observed in the values of sTNF-α in the LPS and LPS + florfenicol groups (P<0.05. Significant increases were found in the kidney and liver damage determinants in the LPS and LPS + florfenicol groups (P<0.05. Irregular changes in the lipid metabolism parameters were observed in all the subgroups. In conclusion, florfenicol does not affect the increases of sTNF-α caused by LPS and does not prevent liver or kidney damage; at least, it can be said that florfenicol does not have any evident positive effects on the acute endotoxemia of fish.

  11. Salivary bone turnover markers in healthy pre- and postmenopausal women: daily and seasonal rhythm.

    Science.gov (United States)

    Pellegrini, Gretel G; Gonzales Chaves, Macarena M S; Fajardo, Maria A; Ponce, Graciela M; Toyos, Gloria I; Lifshitz, Fima; Friedman, Silvia M; Zeni, Susana N

    2012-04-01

    No studies had investigated circadian and circannual rhythms of bone biomarkers in whole saliva. We evaluated the salivary daily and seasonal rhythm of carboxy-terminal telopeptide of type I collagen (CTX) and bone alkaline phosphatase (b-ALP). Forty clinical and oral healthy ambulatory pre- and postmenopausal women from two southern Argentine cities: Comodoro Rivadavia (latitude 45º S) and Ushuaia (latitude 54º S) were included in the study. CTX levels were evaluated in serum, urine, and saliva, and b-ALP levels were measured in serum and saliva. In both groups of women, salivary CTX showed a maximum percentage of change early in the morning (80%) and a minimum in the late afternoon (45%), similarly to the pattern observed in urinary samples. No daily rhythm was observed in serum or salivary b-ALP. 25-Hydroxyvitamin D levels decreased in winter vs. summer (p < 0.01) without differences between the two studied groups. Conversely, parathormone reached higher levels in winter (p < 0.05) which induced a slight non-significant increment in salivary CTX and b-ALP levels. The results showed that, as in serum and urinary samples, salivary CTX exhibits daily and a slight seasonal rhythmicity. Whole non-stimulated saliva is a useful tool to detect several oral and systemic diseases because it has important advantages compared to serum and urinary samples. Then, it may also be a promising sample to test changes in bone metabolism contributing to diagnose and to monitor the therapy of several metabolic bone diseases. PMID:21431857

  12. Association between the stress fracture and bone metabolism/quality markers in lacrosse players

    OpenAIRE

    Wakamatsu K.; Sakuraba K; Suzuki Y.; Maruyama A; Tsuchiya Y.; Shikakura J; Ochi E

    2012-01-01

    Kenta Wakamatsu,1 Keishoku Sakuraba,1 Yoshio Suzuki,2 Asako Maruyama,2 Yosuke Tsuchiya,3 Jiro Shikakura,2 Eisuke Ochi31Department of Sports Medicine, Graduate School of Medicine, Juntendo University, Tokyo, Japan; 2School of Health and Sports Science, Juntendo University, Chiba, Japan; 3Laboratory of Health and Sports Sciences, Meiji Gakuin University, Kanagawa, JapanBackground: Overuse injury including stress fracture is a serious problem for athletes. Recently, the importance of bone metabo...

  13. Conformal Arc Radiotherapy for Prostate Cancer: Increased Biochemical Failure in Patients With Distended Rectum on the Planning Computed Tomogram Despite Image Guidance by Implanted Markers

    International Nuclear Information System (INIS)

    Purpose: To evaluate the effect of rectal distention on the planning computed tomogram on freedom from biochemical failure (FFBF) of prostate cancer patients treated with image-guided conformal arc radiotherapy. Methods and Materials: The outcomes of 238 patients with T1-T3N0M0 tumors were analyzed, with a median follow-up of 53 months (range, 24-93 months). In 213 patients, daily co-registration of X-rays and digitally reconstructed radiographs was used for positioning, whereas in 25 patients positioning was done using direct prostate visualization with implanted markers. The rectal average cross-sectional area was determined on the planning computed tomogram. Results: The 5-year freedom from Grade 3 to 4 late gastrointestinal and urinary side effect, according to the Radiation Therapy Oncology Group criteria, was 100% and 99.4% respectively. The 5-year FFBF was 88.4%. On multivariate analysis the following variables were significantly related to worse FFBF: risk group according to the National Comprehensive Cancer Network (high- to very high risk vs. intermediate- to low-risk), dose (70 vs. 78 Gy), average cross-sectional area (≥16 vs. 2) and, unexpectedly, the use of implanted markers as opposed to bony structures for patient positioning. In retrospect, the margins around the clinical target volume appeared to be inadequate in the cases in which markers were used. Conclusion: Overall, the outcome of patients treated with image-guided conformal arc radiotherapy is excellent. We were able to confirm the negative prognostic impact of a distended rectum on the planning computed tomogram described by others. The study illustrates the potential danger of image guidance techniques as to margin reduction around the clinical target volume.

  14. Supplementation with calcium and short-chain fructo-oligosaccharides affects markers of bone turnover but not bone mineral density in postmenopausal women.

    Science.gov (United States)

    Slevin, Mary M; Allsopp, Philip J; Magee, Pamela J; Bonham, Maxine P; Naughton, Violetta R; Strain, J J; Duffy, Maresa E; Wallace, Julie M; Mc Sorley, Emeir M

    2014-03-01

    This 24-mo randomized, double-blind, controlled trial aimed to examine whether supplementation with a natural marine-derived multi-mineral supplement rich in calcium (Ca) taken alone and in conjunction with short-chain fructo-oligosaccharide (scFOSs) has a beneficial effect on bone mineral density (BMD) and bone turnover markers (BTMs) in postmenopausal women. A total of 300 non-osteoporotic postmenopausal women were randomly assigned to daily supplements of 800 mg of Ca, 800 mg of Ca with 3.6 g of scFOS (CaFOS), or 9 g of maltodextrin. BMD was measured before and after intervention along with BTMs, which were also measured at 12 mo. Intention-to-treat ANCOVA identified that the change in BMD in the Ca and CaFOS groups did not differ from that in the maltodextrin group. Secondary analysis of changes to BTMs over time identified a greater decline in osteocalcin and C-telopeptide of type I collagen (CTX) in the Ca group compared with the maltodextrin group at 12 mo. A greater decline in CTX was observed at 12 mo and a greater decline in osteocalcin was observed at 24 mo in the CaFOS group compared with the maltodextrin group. In exploratory subanalyses of each treatment group against the maltodextrin group, women classified with osteopenia and taking CaFOS had a smaller decline in total-body (P = 0.03) and spinal (P = 0.03) BMD compared with the maltodextrin group, although this effect was restricted to those with higher total-body and mean spinal BMD at baseline, respectively. Although the change in BMD observed did not differ between the groups, the greater decline in BTMs in the Ca and CaFOS groups compared with the maltodextrin group suggests a more favorable bone health profile after supplementation with Ca and CaFOS. Supplementation with CaFOS slowed the rate of total-body and spinal bone loss in postmenopausal women with osteopenia-an effect that warrants additional investigation. This trial was registered at www.controlled-trials.com as ISRCTN63118444. PMID

  15. Evidence that increased calcium intake does not prevent early postmenopausal bone loss

    DEFF Research Database (Denmark)

    Hosking, D J; Ross, P D; Thompson, D E; Wasnich, R D; McClung, M; Bjarnason, N H; Ravn, Pernille; Cizza, G; Daley, M; Yates, A J

    1998-01-01

    intake was recorded, and bone mineral density (BMD) (in the lumbar spine, total body, forearm, and hip) and biochemical markers of bone turnover (serum total alkaline phosphatase, serum osteocalcin, and urinary N-telopeptide crosslink levels) were measured at baseline and annually thereafter. Women whose...

  16. Prospective Isolation of Murine and Human Bone Marrow Mesenchymal Stem Cells Based on Surface Markers

    Directory of Open Access Journals (Sweden)

    Yo Mabuchi

    2013-01-01

    Full Text Available Mesenchymal stem cells (MSCs are currently defined as multipotent stromal cells that undergo sustained in vitro growth and can give rise to cells of multiple mesenchymal lineages, such as adipocytes, chondrocytes, and osteoblasts. The regenerative and immunosuppressive properties of MSCs have led to numerous clinical trials exploring their utility for the treatment of a variety of diseases (e.g., acute graft-versus-host disease, Crohn’s disease, multiple sclerosis, osteoarthritis, and cardiovascular diseases including heart failure and myocardial infarction. On the other hand, conventionally cultured MSCs reflect heterogeneous populations that often contain contaminating cells due to the significant variability in isolation methods and the lack of specific MSC markers. This review article focuses on recent developments in the MSC research field, with a special emphasis on the identification of novel surface markers for the in vivo localization and prospective isolation of murine and human MSCs. Furthermore, we discuss the physiological importance of MSC subtypes in vivo with specific reference to data supporting their contribution to HSC niche homeostasis. The isolation of MSCs using selective markers (combination of PDGFRα and Sca-1 is crucial to address the many unanswered questions pertaining to these cells and has the potential to enhance their therapeutic potential enormously.

  17. Transcriptional and biochemical markers in transplanted Perca flavescens to characterize cadmium- and copper-induced oxidative stress in the field

    International Nuclear Information System (INIS)

    Highlights: • Four-weeks exposure is sufficient to increase kidney metal levels in wild perch. • Cd and Cu affected indicators of retinoid metabolism and oxidative stress in fish. • Multi-level biological approaches are needed when assessing fish metal toxicology. • Changes at molecular level do not always mean changes at the functional level. • Wild juvenile perch may partly adjust to metal contamination by plastic responses. - Abstract: Despite recent progress achieved in elucidating the mechanisms underlying local adaptation to pollution, little is known about the evolutionary change that may be occurring at the molecular level. The goal of this study was to examine patterns of gene transcription and biochemical responses induced by metal accumulation in clean yellow perch (Perca flavescens) and metal depuration in contaminated fish in a mining and smelting region of Canada. Fish were collected from a reference lake (lake Opasatica) and a Cd, Cu and Zn contaminated lake (lake Dufault) located in the Rouyn-Noranda region (Qc, Canada) and caged for one or four weeks in their own lake or transplanted in the other lake. Free-ranging fish from the same lakes were also collected. Kidney Cd and Cu concentrations in clean fish caged in the contaminated lake increased with the time of exposure, but metal depuration did not occur in contaminated fish caged in the clean lake. After 4 weeks, the major retinoid metabolites analysed, the percentage of free dehydroretinol (dROH) and the retinol dehydrogenase-2 (rdh-2) transcription level in liver decreased in clean fish transplanted into the metal-contaminated lake, suggesting that metal exposure negatively impacted retinoid metabolism. However, we observed an increase in almost all of the retinoid parameters analysed in fish from the metal-impacted lake caged in the same lake, which we interpret as an adaptation response to higher ambient metal concentration. In support of this hypothesis, liver transcription levels

  18. Transcriptional and biochemical markers in transplanted Perca flavescens to characterize cadmium- and copper-induced oxidative stress in the field

    Energy Technology Data Exchange (ETDEWEB)

    Defo, Michel A. [Institut National De La Recherche Scientifique (INRS), Centre Eau Terre Environnement, 490 De La Couronne, Québec, QC G1K 9A9 (Canada); Bernatchez, Louis [Institut De Biologie Intégrative Et Des Systèmes (IBIS), Université Laval, Québec, QC G1V 0A6 (Canada); Campbell, Peter G.C.; Couture, Patrice [Institut National De La Recherche Scientifique (INRS), Centre Eau Terre Environnement, 490 De La Couronne, Québec, QC G1K 9A9 (Canada)

    2015-05-15

    Highlights: • Four-weeks exposure is sufficient to increase kidney metal levels in wild perch. • Cd and Cu affected indicators of retinoid metabolism and oxidative stress in fish. • Multi-level biological approaches are needed when assessing fish metal toxicology. • Changes at molecular level do not always mean changes at the functional level. • Wild juvenile perch may partly adjust to metal contamination by plastic responses. - Abstract: Despite recent progress achieved in elucidating the mechanisms underlying local adaptation to pollution, little is known about the evolutionary change that may be occurring at the molecular level. The goal of this study was to examine patterns of gene transcription and biochemical responses induced by metal accumulation in clean yellow perch (Perca flavescens) and metal depuration in contaminated fish in a mining and smelting region of Canada. Fish were collected from a reference lake (lake Opasatica) and a Cd, Cu and Zn contaminated lake (lake Dufault) located in the Rouyn-Noranda region (Qc, Canada) and caged for one or four weeks in their own lake or transplanted in the other lake. Free-ranging fish from the same lakes were also collected. Kidney Cd and Cu concentrations in clean fish caged in the contaminated lake increased with the time of exposure, but metal depuration did not occur in contaminated fish caged in the clean lake. After 4 weeks, the major retinoid metabolites analysed, the percentage of free dehydroretinol (dROH) and the retinol dehydrogenase-2 (rdh-2) transcription level in liver decreased in clean fish transplanted into the metal-contaminated lake, suggesting that metal exposure negatively impacted retinoid metabolism. However, we observed an increase in almost all of the retinoid parameters analysed in fish from the metal-impacted lake caged in the same lake, which we interpret as an adaptation response to higher ambient metal concentration. In support of this hypothesis, liver transcription levels

  19. The Effect of Ramadan Fasting on Biochemical Substances Relating to the Renal and Bone Function of Fasting Pregnant Women, 2011-2012

    Directory of Open Access Journals (Sweden)

    Abolfazl Khoshdel

    2014-06-01

    Full Text Available Introduction: The effect of fluid and food restrictions on biochemical substances relating to the renal and bone function of pregnant women is not well defined. The purpose of this study is to evaluate the effects of fluid and food restriction on the following substances in pregnant fasting women during Ramadan: blood urea nitrogen (BUN, creatinine (Cr, calcium (Ca, phosphorus (P, and alkaline phosphates (ALP. Material and Methods: Thirty fasting pregnant women voluntarily participated in this prospective descriptive study. The serum levels of BUN, Cr, P, and ALP were measured at the baseline, and on the 7th, 14th, and 28th days of Ramadan; the measurements were also performed 2 weeks after this month. The statistical significance was defined as P 0.05; also, Cr didn’t change during Ramadan and 2 weeks after it (P> 0.05. Moreover, no differences in P and ALP levels were noticed between the end of Ramadan and two weeks after it (P> 0.05. Conclusion: According to this study, there is no sufficient evidence regarding the adverse effects of Ramadan fasting on biochemical substances relating to the renal and bone function of pregnant fasting women.

  20. Dietary Zinc Reduces Osteoclast Resorption Activities and Increases Markers of Osteoblast Differentiation, Matrix Maturation, and Mineralization in the Long Bones of Growing Rats

    Science.gov (United States)

    The nutritional influence of zinc (Zn) on markers of bone extracellular matrix (ECM) resorption and mineralization was investigated in growing rats. Thirty male weanling rats were randomly assigned to consume AIN-93G based diets containing 2.5, 5, 7.5, 15, or 30 µg Zn/g diet for 24 d. Femur Zn incre...

  1. Salivary biochemical markers as potential acute toxicity parameters for acute radiation injury: A study on small experimental animals.

    Science.gov (United States)

    Soni, S; Agrawal, P; Kumar, N; Mittal, G; Nishad, D K; Chaudhury, N K; Bhatnagar, A; Basu, M; Chhillar, N

    2016-03-01

    Researchers have been evaluating several biodosimetric/screening approaches to assess acute radiation injury, related to mass causality. Keeping in mind this background, we hypothesized that effect of whole-body irradiation in single fraction in graded doses can affect the secretion of various salivary components that could be used as acute radiation injury/toxicity marker, which can be used in screening of large population at the time of nuclear accidents/disaster. Thirty Sprague Dawley rats treated with whole-body cobalt-60 gamma irradiation of dose 1-5 Gy (dose rate: 0.95 Gy/min) were included in this study. Whole mixed saliva was collected from all animals before and after radiation up to 72 h postradiation. Saliva was analyzed for electrolytes, total protein, urea, and amylase. Intragroup comparison of salivary parameters at different radiation doses showed significant differences. Potassium was significantly increased as the dose increased from 1 Gy to 5 Gy (p 0.5). Sodium was significantly altered after 3-5 Gy (p 0.5), except 1 and 2 Gy, whereas changes in sodium level were nonsignificant (p > 0.5). Urea, total protein, and amylase levels were also significantly increased as the radiation dose increased (p 0.5). This study suggests that salivary parameters were sensitive toward radiation even at low radiation dose which can be used as a predictor of radiation injury. PMID:25813962

  2. Biochemical and physical correlates of DNA contamination in archaeological human bones and teeth excavated at Matera, Italy

    DEFF Research Database (Denmark)

    Gilbert, M. T. P.; Rudbeck, L.; Willerslev, E.; Hansen, Anders J.; Smith, C.; Penkman, K. E. H.; Prangenberg, K.; Nielsen-Marsh, C. M.; Jans, M. E.; Arthur, P.; Lynnerup, N.; Turner-Walker, G.; Biddle, M.; Kjolbye-Biddle, B.; Collins, M. J.

    2005-01-01

    The majority of ancient DNA studies on human specimens have utilised teeth and bone as a source of genetic material. In this study the levels of endogenous contamination (i.e. present within the sample prior to sampling for the DNA analysis) are assessed within human bone and teeth specimens...... with the presence of observable contamination in both bone and teeth samples from individual samples. While we can only speculate on the cause of this relationship, we posit that they provide useful guides for the assessment of whether samples are likely to be contaminated or not. (c) 2005 Elsevier Ltd...

  3. Dual-Purpose Bioreactors to Monitor Noninvasive Physical and Biochemical Markers of Kidney and Liver Scaffold Recellularization.

    Science.gov (United States)

    Uzarski, Joseph S; Bijonowski, Brent M; Wang, Bo; Ward, Heather H; Wandinger-Ness, Angela; Miller, William M; Wertheim, Jason A

    2015-10-01

    Analysis of perfusion-based bioreactors for organ engineering and a detailed evaluation of physical and biochemical parameters that measure dynamic changes within maturing cell-laden scaffolds are critical components of ex vivo tissue development that remain understudied topics in the tissue and organ engineering literature. Intricately designed bioreactors that house developing tissue are critical to properly recapitulate the in vivo environment, deliver nutrients within perfused media, and monitor physiological parameters of tissue development. Herein, we provide an in-depth description and analysis of two dual-purpose perfusion bioreactors that improve upon current bioreactor designs and enable comparative analyses of ex vivo scaffold recellularization strategies and cell growth performance during long-term maintenance culture of engineered kidney or liver tissues. Both bioreactors are effective at maximizing cell seeding of small-animal organ scaffolds and maintaining cell survival in extended culture. We further demonstrate noninvasive monitoring capabilities for tracking dynamic changes within scaffolds as the native cellular component is removed during decellularization and model human cells are introduced into the scaffold during recellularization and proliferate in maintenance culture. We found that hydrodynamic pressure drop (ΔP) across the retained scaffold vasculature is a noninvasive measurement of scaffold integrity. We further show that ΔP, and thus resistance to fluid flow through the scaffold, decreases with cell loss during decellularization and correspondingly increases to near normal values for whole organs following recellularization of the kidney or liver scaffolds. Perfused media may be further sampled in real time to measure soluble biomarkers (e.g., resazurin, albumin, or kidney injury molecule-1) that indicate degree of cellular metabolic activity, synthetic function, or engraftment into the scaffold. Cell growth within bioreactors is

  4. Homogenous demineralized dentin matrix and platelet-rich plasma for bone tissue engineering in cranioplasty of diabetic rabbits: biochemical, radiographic, and histological analysis.

    Science.gov (United States)

    Gomes, M F; Valva, V N; Vieira, E M M; Giannasi, L C; Salgado, M A C; Vilela-Goulart, M G

    2016-02-01

    This study evaluated the effects of homogenous demineralized dentin matrix (HDDM) slices and platelet-rich plasma (PRP) in surgical defects created in the parietal bones of alloxan-induced diabetic rabbits, treated with a guided bone regeneration technique. Biochemical, radiographic, and histological analyses were performed. Sixty adult New Zealand rabbits were divided into five groups of 12: normoglycaemic (control, C), diabetic (D), diabetic with a PTFE membrane (DM), diabetic with a PTFE membrane and HDDM slices (DM-HDDM), and diabetic with PTFE membrane and PRP (DM-PRP). The quantity and quality of bone mass was greatest in the DM-HDDM group (respective radiographic and histological analyses: at 15 days, 71.70 ± 16.50 and 50.80 ± 1.52; 30 days, 62.73 ± 16.51 and 54.20 ± 1.23; 60 days, 63.03 ± 11.04 and 59.91 ± 3.32; 90 days, 103.60 ± 24.86 and 78.99 ± 1.34), followed by the DM-PRP group (respective radiographic and histological analyses: at 15 days 23.00 ± 2.74 and 20.66 ± 7.45; 30 days 31.92 ± 6.06 and 25.31 ± 5.59; 60 days 25.29 ± 16.30 and 46.73 ± 2.07; 90 days 38.10 ± 14.04 and 53.38 ± 9.20). PRP greatly enhanced vascularization during the bone repair process. Abnormal calcium metabolism was statistically significant in the DM-PRP group (PAlkaline phosphatase activity was significantly higher in the DM-HDDM group (P<0.001) in comparison to the C, D, and DM-PRP groups, confirming the findings of intense osteoblastic activity and increased bone mineralization. Thus, HDDM promoted superior bone architectural microstructure in bone defects in diabetic rabbits due to its effective osteoinductive and osteoconductive activity, whereas PRP stimulated angiogenesis and red bone marrow formation. PMID:26482638

  5. Biostimulation effect of low-level laser on healing process after third molar surgery, based on biochemical markers in saliva

    Science.gov (United States)

    Kroulikova, Veronika; Dostálová, Tatjana; Podzimek, Stepan

    2015-02-01

    Third molar extractions in general anesthesia have become a standard procedure in dentistry. There is an effort to shorten healing time and decrease the number of complications as well as increase comfort after the treatment. Low-level lasers are known for their analgesic, anti-inflammatory, and stimulatory effect. The aim of the study is to evaluate the effect of low-level laser after surgery in general anesthesia reducing the patient's discomfort, i.e. mainly pain, and also, to monitor the biostimulation process. Our study included 79 patients treated at the Department of Maxilofacial Surgery, diagnosed with third molar retention. Diode low-level laser radiation (wavelength 830 nm, output power 270 mW, probe aperture of 6.4 mm2) with dose ~ 3 mJ was applied. The control group was treated by using placebo - red light. The exposure time was 11 seconds immediately after the suture; the treatment was repeated every day for the following 3 days. To evaluate the effect of laser biostimulation, the objective markers for immunological determination of healing - sIgA and lysozyme in non-stimulated saliva of patients - were used. The sIgA decreases after laser application from 546.91 mg/l to 304. 91mg/l and in the control group from 602.25mg/l to 425.62 mg/l. The results were statistically significant. The level of lysozyme decreases from 54.27 mg/l to 2.45mg/l after laser biostimulation, from 304.371mg/l to 11.08mg/l after placebo effect. The study has confirmed a low-level laser healing effect not directly related to pain.

  6. Determination of potential role of antioxidative status and circulating biochemical markers in the pathogenesis of ethambutol induced toxic optic neuropathy among diabetic and non-diabetic patients.

    Science.gov (United States)

    Rasool, Mahmood; Malik, Arif; Manan, Abdul; Aziz, Khuram; Mahmood, Amna; Zaheer, Saima; Shuja, Naveed; Qazi, Mahmood Husain; Kamal, Mohammad Amjad; Karim, Sajjad

    2015-11-01

    The present study was designed to explore the antioxidative status and circulating biochemical markers having a potential role in the pathogenesis of ethambutol (EMB) induced toxic optic neuropathy (TON) among diabetic and non-diabetic patients. Fifty patients under complete therapy of EMB for tuberculosis were included in the present study. Inclusion criteria for patients were to receive EMB everyday during treatment, a dose of 25 mg/kg for initial 2 months and 15 mg/kg during the rest of therapy period. We conducted color vision and visual acuity test for all patients. Fifteen out of fifty EMB induced TON patients, were found to be diabetic. Color vision and visual acuity test results were evaluated for diabetic and non-diabetic as well as twenty age matched controls. The results demonstrated a significant pattern of circulating biochemical markers between the studied groups. Data regarding hematological (RBC, p value = 0.02; Hemoglobin, p value = 0.02), hepatic (total bilirubin, p value = 0.01), renal (urea, p value = 0.03; creatinine, p value = 0.007), lipid (total cholesterol, p value = 0.01; total triglycerides, p value = 0.03) and antioxidative (superoxide dismutase, p value = 0.005; glutathione, p value = 0.02; catalase, p value = 0.02) profile showed a highly significant difference among the studied groups specially patients with diabetes. Malondialdehyde (MDA) level had gone significantly up in diabetic TON patients (p value = 0.02), in comparison to other antioxidants and vitamins (Vit). Vit-A, E, B1, B12 and Zinc seem to be playing a major role in the pathogenesis of TON, specially Vit-E and B1 surpassed all the antioxidants as having highly significant inverse relationships with MDA (MDA vs Vit-E, r = -0.676(**) and MDA vs Vit-B1, r = -0.724(**) respectively). We conclude that during the ethambutol therapy the decreased levels of Vit-E and Vit-B1 possibly play a role in the development of TON and may be used as therapeutic

  7. Bone Metabolism on ISS Missions

    Science.gov (United States)

    Smith, S. M.; Heer, M. A.; Shackelford, L. C.; Zwart, S. R.

    2014-01-01

    Spaceflight-induced bone loss is associated with increased bone resorption (1, 2), and either unchanged or decreased rates of bone formation. Resistive exercise had been proposed as a countermeasure, and data from bed rest supported this concept (3). An interim resistive exercise device (iRED) was flown for early ISS crews. Unfortunately, the iRED provided no greater bone protection than on missions where only aerobic and muscular endurance exercises were available (4, 5). In 2008, the Advanced Resistive Exercise Device (ARED), a more robust device with much greater resistance capability, (6, 7) was launched to the ISS. Astronauts who had access to ARED, coupled with adequate energy intake and vitamin D status, returned from ISS missions with bone mineral densities virtually unchanged from preflight (7). Bone biochemical markers showed that while the resistive exercise and adequate energy consumption did not mitigate the increased bone resorption, bone formation was increased (7, 8). The typical drop in circulating parathyroid hormone did not occur in ARED crewmembers. In 2014, an updated look at the densitometry data was published. This study confirmed the initial findings with a much larger set of data. In 42 astronauts (33 male, 9 female), the bone mineral density response to flight was the same for men and women (9), and those with access to the ARED did not have the typical decrease in bone mineral density that was observed in early ISS crewmembers with access to the iRED (Figure 1) (7). Biochemical markers of bone formation and resorption responded similarly in men and women. These data are encouraging, and represent the first in-flight evidence in the history of human space flight that diet and exercise can maintain bone mineral density on long-duration missions. However, the maintenance of bone mineral density through bone remodeling, that is, increases in both resorption and formation, may yield a bone with strength characteristics different from those

  8. A dual investigation of the effect of dietary supplementation with licorice flavonoid oil on anthropometric and biochemical markers of health and adiposity

    Directory of Open Access Journals (Sweden)

    Bloomer Richard J

    2011-02-01

    Full Text Available Abstract Background Licorice flavonoid oil (LFO has been reported to minimize visceral adipose tissue gain in obese mice and to result in a decrease in body weight and body fat in humans; the effects of which may be more pronounced when administered in an overfed state. Methods We investigated the effects of LFO in two separate studies. Study 1 included a sample of overweight or grade I-II obese men and women (N = 22 who followed their usual dietary and physical activity programs. Study 2 included a sample of athletic men who followed their usual dietary and physical activity programs but consumed a daily supplemental meal (25% above daily energy requirements in an attempt to induce a state of overfeeding. In both studies, subjects were randomly assigned (double-blind to either LFO or a placebo for eight weeks, and anthropometric and multiple biochemical outcomes (e.g., markers of oxidative stress, markers of insulin sensitivity, blood lipids, etc. were obtained before and following the intervention. Results No differences of statistical significance were noted between LFO and placebo for any measured variable in Study 1 or Study 2. When investigating the percent change from baseline for data in Study 2, although not of statistical significance, subjects in the LFO condition experienced less overall fat gain, as well as attenuation in the elevation in selected blood lipids (e.g., cholesterol, LDL-C, and triglycerides. Conclusion These combined data indicate little effect of LFO supplementation within a sample of overweight/obese men and women or athletic men, with the possible exception of attenuation in body fat gain and selected components of the blood lipid panel in response to an overfeeding condition.

  9. Indicadores bioquímicos y pruebas isométricas en fibromialgia Biochemical markers and isometric tests in fibromyalgia

    Directory of Open Access Journals (Sweden)

    Manuel López Espino

    2008-12-01

    studies, but actually it does not exist any specific test for a precise differential diagnostic. In this study we adapt two evaluation instruments, which are biological markers and muscular, in order to confirm the SFM as psychosomatic illness, and not as somatoforme disorder. Our study was planned as a prospective analysis of 26 female patients affected by fibromyalgia and a random sample that accepted being studied, in order to measure the biological profile of stress and isometric and dynamic performances (Isostation B- 200 in fibromyalgic patiens and control group.

  10. Bone

    International Nuclear Information System (INIS)

    Bone scanning provides information on the extent of primary bone tumors, on possible metastatic disease, on the presence of osteomyelitis prior to observation of roentgenographic changes so that earlier therapy is possible, on the presence of collagen diseases, on the presence of fractures not disclosed by x-ray films, and on the evaluation of aseptic necrosis. However, the total effect and contribution of bone scanning to the diagnosis, treatment, and ultimate prognosis of pediatric skeletal diseases is, as yet, unknown. (auth)

  11. Dosing related effects of zoledronic acid on bone markers and creatinine clearance in patients with multiple myeloma and metastatic breast cancer

    DEFF Research Database (Denmark)

    Søe, Kent; Delaissé, Jean-Marie; Jakobsen, Erik H;

    2014-01-01

    Zoledronic acid (Zol) is frequently used for the treatment of bone disease in patients with multiple myeloma and breast cancer with metastasis to bone. Therefore, there is also an interest in finding the optimal dosing regimen to optimize effects, minimize side effects and reduce costs. In our...... phase II clinical trial we investigated the effect of Zol treatment on the serum levels of the bone markers collagen type 1 cross-linked C-telopeptide (CTX) and bone specific alkaline phosphatase (bALP) as well as on creatinine clearance (kidney function) in response to dosing and duration of treatment...... for each individual patient. Methods. We enrolled 30 multiple myeloma (MM) and 30 breast cancer (BC) patients whereof 10 of each had never received bisphosphonate and 20 had received at least six prior Zol treatments. Results. We found that Zol treatment strongly reduced CTX (Spearman's correlation...

  12. Effect of Dietary Intake of Avocado Oil and Olive Oil on Biochemical Markers of Liver Function in Sucrose-Fed Rats

    Directory of Open Access Journals (Sweden)

    Octavio Carvajal-Zarrabal

    2014-01-01

    Full Text Available Metabolic changes, along with cardiovascular and hepatic factors, are associated with the development of diseases such as diabetes, dyslipidemia, and obesity. We evaluated the effect of avocado oil supplementation (centrifuged and solvent extracted, compared with olive oil, upon the hepatic function in sucrose-fed rats. Twenty-five rats were divided into five groups: control (basal diet, a sucrose-fed group (basal diet plus 30% sucrose solution, and three other groups (S-OO, S-AOC, and S-AOS, indicating basal diet plus 30% sucrose solution plus olive oil OO, avocado oil extracted by centrifugation AOC or using solvent AOS, resp.. Glucose, total cholesterol, triglycerides, total protein, albumin, globulin, direct bilirubin, glutamic pyruvic transaminase, glutamic oxaloacetic transaminase, alkaline phosphatase, cholinesterase, and α-amylase concentrations were determined and avocado oil effect on them was studied. In some cases the induced metabolic alteration significantly affected total protein and bilirubin levels and also had a highly significant effect on α-amylase levels. AOC and AOS exhibited effects similar to those of olive oil, according to the nonsignificant difference in fatty acid profile observed by other authors. Avocado oil consumption could be beneficial in the control of altered metabolic profile illnesses as it presents effects on hepatic function biochemical markers similar to olive oil.

  13. First Trimester Maternal Serum Screening Using Biochemical Markers PAPP-A and Free β-hCG for Down Syndrome, Patau Syndrome and Edward Syndrome.

    Science.gov (United States)

    Shiefa, S; Amargandhi, M; Bhupendra, J; Moulali, S; Kristine, T

    2013-01-01

    The first trimester screening programme offers a noninvasive option for the early detection of aneuploidy pregnancies. This screening is done by a combination of two biochemical markers i.e. serum free β-human chorionic gonadotrophin (free β-hCG) and pregnancy associated plasma protein A (PAPP-A), maternal age and fetal nuchal translucency (NT) thickness at 11 + 0-13 + 6 weeks of gestation. A beneficial consequence of screening is the early diagnosis or trisomies 21, 18 and 13. At 11 + 0-13 + 6 weeks, the relative prevalence of trisomies 18 and 13 to trisomy 21 are found to be one to three and one to seven, respectively. All three trisomies are associated with increased maternal age, increased fetal NT and decreased PAPP-A, but in trisomy 21 serum free β-hCG is increased whereas in trisomies 18 and 13 free β-hCG is decreased. PMID:24381414

  14. Effect of the Medicinal Mushroom, Grifola gargal (Agaricomycetes), on Bone Turnover Markers and Serum Lipids in Middle-Aged and Elderly Japanese Women.

    Science.gov (United States)

    Harada, Etsuko; Morizono, Toshihiro; Sumiya, Toshimitsu; Kawagishi, Hirokazu

    2016-01-01

    A clinical study was performed to examine the effect of the edible mushroom, Grifola gargal, on bone turnover markers and serum lipids in middle-aged and elderly Japanese women. Postmenopausal women aged 51-73 years (mean age, 61 years) received daily oral administration of 5 g G. gargal fruiting bodies (hot air-dried and powdered; G. gargal powder [GGP]). Serum levels of bone alkaline phosphatase (BAP) and lipids and urinary deoxypyridinoline (DPD) levels were measured before and 2 weeks after the start of GGP treatment. As a result, urinary DPD bone resorption marker levels in women treated with GGP decreased significantly. Serum levels of the BAP bone formation marker also tended to increase, but the difference was not significant. By contrast, the atherogenic index decreased and the high-density lipoprotein (HDL) ratio increased significantly. However, there were no statistically significant differences in serum lipids of total cholesterol, HDL cholesterol, and low-density lipoprotein cholesterol. In addition, this study demonstrated for the first time that G. gargal is safe for human consumption. PMID:27279439

  15. Impact of NRTI backbone on renal, bone and cardiovascular markers in HIV-infected individuals receiving a boosted protease inhibitor

    Directory of Open Access Journals (Sweden)

    Tristan Barber

    2014-11-01

    Full Text Available Introduction: We have previously shown in the SSAT 044 study that unconjugated hyperbilirubinaemia in subjects receiving a boosted protease inhibitor (PI/r has limited impact on renal, cardiovascular (CV and bone biomarkers, as well as on neurocognitive performance, relative to those receiving PI/r with a normal bilirubin. We present here a secondary analysis comparing markers in those receiving abacavir- vs tenofovir- based antiretroviral therapy (ART. Materials and Methods: This cross-sectional study included 101 HIV-1 infected individuals stable (HIV RNA6 months on antiretroviral regimens including tenofovir (TDF/emtricitabine or abacavir/lamivudine plus a ritonavir boosted PI. Results: Forty-three subjects had normal bilirubin (NBR levels and 35 had high bilirubin (>2.5 times upper limit; the remaining 23 patients had intermediate bilirubin levels or violated the protocol. The mean age of participants was 48 years; 93% were male and 84% Caucasian; 22 received ABC-based therapy and 78 TDF. No differences were seen in cardiovascular markers: Framingham (10-year risk % median, IQR: ABC 8.1, 5.6–15.3; TDF 9.5, 4.8–13.4 (p=ns; pulse wave velocity and carotid intimal thickness also showed no significant differences. No differences were seen in bone parameters: Calcaneal Stiffness Index (median score, IQR: ABC −0.5, −0.8 to 0.8; TDF −0.5, 1.4–0.4 (p=ns; 10 year FRAX score (% median, IQR: ABC 5.0, 2.4–6.2; TDF 3.6, 2.5–5.8 (p=ns. There were differences in renal parameters as shown in Table 1. We show statistically significant differences in urine protein/creatinine ratio (uPCR (10 vs 7; p=0.004 and urine albumin/creatinine ratio (uACR (15 vs 8; p=0.002, with both being higher in the TDF group. Conclusions: Tenofovir use is associated with excess loss of proteins including those typically resorbed in the renal tubule. Abacavir use was not associated with an increase in biomarkers of CV risk or vascular dysfunction.

  16. Healthy looking hospital nurses showing vitamin d deficiency: correlation of vitamin d levels with their levels of parathhyroid hormone and bone turnover markers

    International Nuclear Information System (INIS)

    To evaluate the correlation of low vitamin D levels with parathyroid hormone (PTH) levels and bone turn over markers among apparently healthy hospital nurses. Methods: Screening was done on 50 recruited healthy female nursing staff, aged between 18 to 35 years, for vitamin D levels. Among them 31 were found to be deficient in vitamin D. These 31 nurses were selected for further evaluation in trance. Their vitamin D levels were calculated by using the electrochemiluminescence immunoassay. Blood samples were drawn to estimate serum PTH levels accordingly. Samples were also collected from these recruited subjects to evaluate their bone turn over markers, including, osteocalcin, procollagen type 1 N propeptide and Beta-Crosslaps. Results: Out of 50 subjects, 31 subjects were found to have Vitamin D levels below 50 nmol/l. Out of these 31 subjects, 13 subjects, 41.9%, showed vitamin D levels below 20 nmol/l. Among these 13 subjects, all had significantly raised PTH levels (p-value: <0.001, r-value: -0.781). In rest of all the subjects, including those having Vitamin D levels above 20nmol/l, inordinately, PTH levels were normal. No reciprocity was found between low Vitamin D and raised PTH levels with bone turnover markers, except with P1NP (r-value 0.022). Conclusion: PTH levels show a steep augmentation in serum, when vitamin D levels hit the trough below 20 nmol/l. These are the subjects who should be treated prior to the development of complications of bone resorption. Moreover we could not find any significant correlation of Vitamin D and PTH with any bone turnover marker except P1NP. (author)

  17. Reproductive performance and bone status markers of gilts and lactating sows supplemented with two different forms of vitamin D1

    DEFF Research Database (Denmark)

    Lauridsen, Charlotte; Halekoh, U; Larsen, Torben; Jensen, Søren Krogh

    2010-01-01

    -response pattern of two vitamin D sources, the commonly used cholecalciferol, called vitamin D3, and a newly developed Hy•D product (25-hydroxycholecalciferol). In experiment 1, 160 gilts were randomly assigned from the first estrus until d 28 of gestation to dietary treatments containing 4 concentrations of one....... In the sow experiment, lactation day (P < 0.001) rather than dietary vitamin D influenced the concentration of osteocalcin and calcium, and the activities of total alkaline phosphatase, and bone alkaline phosphatase in plasma. Age of the suckling piglets affected their plasma bone health markers. In...

  18. Predictors of bone disease in Egyptian prepubertal children with β-thalassaemia major

    OpenAIRE

    Tantawy, Azza A.G.; El-Bostany, Eman A.; Matter, Randa M; El-Ghoroury, Eman A.; Ragab, Shadia

    2010-01-01

    Introduction Thalassaemic osteopathy is a multifactorial disorder and limited information exists about bone accrual and bone mineral density (BMD) in prepubertal thalassaemic children. The study aimed to investigate some potential genetic and biochemical bone markers as possible early predictors of BMD variations in children with β-thalassaemia major (TM) before puberty. Material and methods Thirt-one prepubertal children with β-TM, and 43 matched controls were subjected to BMD assessment by ...

  19. Labisia pumila regulates bone-related genes expressions in postmenopausal osteoporosis model

    OpenAIRE

    Fathilah, Siti Noor; Mohamed, Norazlina; Muhammad, Norliza; Mohamed, Isa Naina; Soelaiman, Ima Nirwana; Shuid, Ahmad Nazrun

    2013-01-01

    Background Labisia Pumila var. alata (LPva) has shown potential as an alternative to estrogen replacement therapy (ERT) in prevention of estrogen-deficient osteoporosis. In earlier studies using postmenopausal model, LPva was able to reverse the ovariectomy-induced changes in biochemical markers, bone calcium, bone histomorphometric parameters and biomechanical strength. The mechanism behind these protective effects is unclear but LPva may have regulated factors that regulate bone remodeling....

  20. Pharmacodynamic effects of oral contraceptive steroids on biochemical markers for arterial thrombosis. Studies in non-diabetic women and in women with insulin-dependent diabetes mellitus.

    Science.gov (United States)

    Petersen, Kresten Rubeck

    2002-02-01

    Even small increases in the frequency of thrombotic disease in users of OCs have general health impact because of their widespread use, which is currently expanding to potential risk groups. The present investigations were launched to study the effects of OCs containing 20-40 micrograms of EE combined with the latest developed gonane progestogens on biochemical risk markers within metabolic systems involved in the development of arterial thrombotic disease. The studies included evaluation of carbohydrate and lipid metabolism as well as the haemostatic system and were performed in non-diabetic women and in women with IDDM, who are prone to the development of arterial thrombosis. In the evaluation of the carbohydrate metabolism in non-diabetic women, we found no effect on fasting glucose or insulin and no effect on the insulin response to oral glucose in women using monophasic OCs containing EE combined with DSG or GST. This contrasts the evaluation of triphasic OCs containing EE combined with GST or NGT, which increased fasting insulin and reduced insulin sensitivity without affecting the glucose-effectiveness or the beta-cell function. Impaired glucose tolerance developed in 10% of the women after 6 months. These finding suggest that OCs are able to induce a state of insulin resistance, which should be considered in the prescription for women with potential disturbed insulin sensitivity or reduced beta-cell secretory capacity e.g. women with ovarian hyperandrogenism, obesity, previous GDM or perimenopausal women. We found no change in glycaemic control in 22 women with well-regulated IDDM treated with a monophasic combination of EE and GST for one year and none of the women developed microalbuminuria during treatment. In the women with diabetes we observed an increase in fasting levels of triglycerides, a decrease in LDL-cholesterol, and unchanged concentrations of total cholesterol and HDL-cholesterol during treatment. In non-diabetic women treated with the same

  1. The effect of Ramadan fasting on biochemical substances relating to the renal and bone function of fasting pregnant women, 2011-2012

    Directory of Open Access Journals (Sweden)

    Abolfazl Khoshdel

    2013-12-01

    Full Text Available Introduction: The effect of fluid and food restrictions on biochemical substances relating to the renal and bone function of pregnant women is not well defined. The purpose of this study is to evaluate the effects of fluid and food restriction on the following substances in pregnant fasting women during Ramadan: blood urea nitrogen (BUN, creatinine (Cr, calcium (Ca, phosphorus (P, and alkaline phosphates (ALP. Material and Methods: Thirty fasting pregnant women voluntarily participated in this prospective descriptive study. The serum levels of BUN, Cr, P, and ALP were measured  at the baseline, and on the 7th, 14th, and 28th days of Ramadan; the measurements were also performed 2 weeks after this month. The statistical significance was defined as PResults: As to the results of the present study,the weight and body mass index (BMI of women didn’t change during the experiment. BUN and Cr increased significantly by the 2nd week of Ramadan; however, no differences were observed between BUN and Cr values at the end of Ramadan and two weeks after it (P> 0.05; also, Cr didn’t change during Ramadan and 2 weeks after it (P> 0.05. Moreover, no differences in P and ALP levels were noticed between the end of Ramadan and two weeks after it (P> 0.05. Conclusion: According to this study, there is no sufficient evidence regarding the adverse effects of Ramadan fasting on biochemical substances relating to the renal and bone function of pregnant fasting women.

  2. The Effects of Bisphosphonates Used Continually or Intermittently on Fractures, Bone Mineral Density and Biochemical Parameters in Osteoporotic Patients - Original Investigation

    Directory of Open Access Journals (Sweden)

    Alev Çevikol

    2010-04-01

    Full Text Available Aim: The aim of this study was to evaluate the effects of bisphosphonates on new fracture development, bone mineral density and biochemical parameters in osteoporotic patients who were treated with these drugs for 5 years. Material and Methods: Thirty nine patients from our osteoporosis outpatient clinic, using bisphosphonates treatment for 5 years were included in this retrospective study. The patients were questioned in terms of demographic features, osteoporosis risk factors, spine and total hip BMD scores measured during the diagnosis and the last follow-up, duration of bisphosphonates use, adverse-effect profile and compliance to the treatment. Serum calcium, phosphorus, alkaline phosphatase levels and 24 houred-urine calcium level were examined. Patients were divided into 2 groups as the patients who were using bisphosphonates continually after diagnosis were group 1 and the patients left using bisphosphonates for some time because of several reasons treated intermittently were group 2. Results: After the diagnosis, 11 (28.2% patients received bisphosphonate treatment continually (Group 1 while 28 (71.8% used the treatment intermittently (Group 2 for 5 years. The break in bisphosphonate use in Group 2 was 1.25±0.63 years. No statistical differences were determined between the 2 groups with respect to DEXA measurement, biochemical parameters or new fracture development identified clinically (p>0.05. Conclusion: Efficacy of bisphosphonates on new fracture development identified clinically, biochemical parameters and DEXA measurement was sustained in patients using bisphosphonates regularly for 5 years, even when treatment was interrupted for approximately 1.5 years. (From the World of Osteoporosis 2010;16:1-8

  3. Postmenopausal bone loss and the risk of osteoporosis.

    Science.gov (United States)

    Christiansen, C

    1994-01-01

    The two most important risk factors for long-term skeletal health are the peak bone mass and the subsequent rate of bone loss. The rate of bone loss after skeletal maturity is determined by both genetic factors and environmental factors. Furthermore, all factors that impair estrogen production will increase bone loss. The present risk of developing osteoporosis and fractures may be assessed by bone mass measurements in the total skeleton, or in local parts of the skeleton such as the spine, hip and forearm, by single-photon/X-ray absorptiometry (SPA or SXA), dual-photon/energy X-ray absorptiometry (DPA or DXA), or quantitative computed tomography (QCT). Furthermore, the rate of bone loss in postmenopausal women may be assessed by means of a number of biochemical markers. The fútúre risk of developing osteoporosis may thus be determined by combining the values for bone mineral content and bone loss. PMID:8081059

  4. The Relationship Between Technetium-99m-Methoxyisobutyl Isonitrile Parathyroid Scintigraphy and Hormonal and Biochemical Markers in Suspicion of Primary Hyperparathyroidism

    Directory of Open Access Journals (Sweden)

    Güler Silov

    2013-04-01

    Full Text Available Objective: Technetium-99m-methoxyisobutyl isonitrile (Tc-99m MIBI has been widely used to evaluate hyperfunctioning autonomous parathyroid glands in patients with elevated intact parathyroid hormone (iPTH and/or calcium (Ca level. The aim of this study was to evaluate the relationship between Tc-99m MIBI parathyroid scintigraphy and hormonal and biochemical markers in suspicion of primary hyperparathyroidism (PHPT. Material and Methods: Dual-phase Tc-99m MIBI parathyroid scintigraphy and total serum iPTH, Ca, phosphorus (P and albumin measurements were performed in 60 patients (52 females, 8 males; mean age, 59.38±12.51 years; range, 34 to 86 years with suspicion of PHPT. Results: The iPTH median level was 160.3 pg/mL (47.8 to 782.6. Thirty-five of the patients had surgical resection of hyperfunctioning parathyroid glands. Of the 35 patients, parathyroid gland pathology was detected in 30 patients using scintigraphic examination. Tc-99m MIBI parathyroid scintigraphy was negative in 30 patients. The iPTH, Ca and P levels were significantly different between in the Tc-99m MIBI positive group and the negative group, respectively: For iPTH, 202.1 (47.8-782.6 pg/mL versus 111.6 (80.1-373 pg/mL; p0.05. Tc-99m MIBI parathyroid scintigraphy showed good correlation with iPTH level and histopathological diagnosis. Sensitivity and specificity was found 83.3% and 76.7%, respectively at the level of iPTH>147.7pg/mL. Conclusion: Tc-99m MIBI parathyroid scintigraphy is most likely to produce identification and localization of a parathyroid adenoma when both iPTH and Ca are elevated as well as decreased P levels.

  5. Follicular fluid insulin like growth factor-1 (FF IGF-1 is a biochemical marker of embryo quality and implantation rates in in vitro fertilization cycles

    Directory of Open Access Journals (Sweden)

    Bindu N Mehta

    2013-01-01

    Full Text Available Context: Insulin-like growth factor-1 (IGF-1 has been reported to play a role in human follicular and embryonic development. However, earlier studies carried out mostly in animal models or in culture mediums supplemented with IGF-1 have been unable to directly link IGF-1 with embryo quality. Results correlating IGF-1 with pregnancy outcome have also been ambiguous so far. Aim: The aim of this study is to find if in situ follicular-fluid level of IGF-1 is predictive of embryo quality and implantation rates in in vitro fertilization (IVF cycles. Settings and Design: Prospective study involving 120 cycles of conventional IVF-embryo transfer in infertile women. Subjects and Methods: IGF-1 concentrations were estimated in pooled follicular-fluid on the day of oocyte-pickup. Embryo quality was assessed daily at different developmental stages. Cycles were sorted into low and high follicular fluid insulin-like growth factor-1 (FF IGF-1 groups according to the median value of measurement. Embryo quality, clinical pregnancy and implantation rate were the main outcome measures. Statistical Analysis: Graph-pad Prism 5 statistical package. Results: FF IGF-1 correlates with embryo quality (Pearson r = 0.3894, r2 = 0.1516, P 58.50 ng/mg protein (receiver operating characteristics AUC : 0.85 ± 0.03, 95% CI: 0.78-0.91. Conclusion: FF IGF-1 is a plausible biochemical marker of embryo quality and implantation rate and correlates with clinical pregnancy rates in conventional IVF cycles.

  6. Biochemical markers of lymphocyte maturation

    Czech Academy of Sciences Publication Activity Database

    Matalová, Eva; Kovářů, F.; Kovářů, H.; Fišerová, Anna; Zelníčková, P.; Landa, L.

    2002-01-01

    Roč. 71, č. 4 (2002), s. 283-286. ISSN 0001-7213 R&D Projects: GA ČR GA304/01/0850; GA AV ČR KSK6005114 Keywords : pig * ontogeny * thymus Subject RIV: EE - Microbiology, Virology Impact factor: 0.370, year: 2002

  7. Effects of 16-month treatment with the cathepsin K inhibitor ONO-5334 on bone markers, mineral density, strength and histomorphometry in ovariectomized cynomolgus monkeys.

    Science.gov (United States)

    Yamada, Hiroyuki; Ochi, Yasuo; Mori, Hiroshi; Nishikawa, Satoshi; Hashimoto, Yasuaki; Nakanishi, Yasutomo; Tanaka, Makoto; Bruce, Mark; Deacon, Steve; Kawabata, Kazuhito

    2016-05-01

    We examined the effects of ONO-5334, a cathepsin K inhibitor, on bone markers, BMD, strength and histomorphometry in ovariectomized (OVX) cynomolgus monkeys. ONO-5334 (1.2, 6 and 30mg/kg/day, p.o.), alendronate (0.05mg/kg/2weeks, i.v.), or vehicle was administered to OVX monkeys (all groups N=20) for 16months. A concurrent Sham group (N=20) was also treated with vehicle for 16months. OVX significantly increased bone resorption and formation markers and decreased BMD in lumbar vertebra, femoral neck, proximal tibia and distal radius. Alendronate suppressed these parameters to a level similar to that in the Sham-operated monkeys. ONO-5334 at doses 6 and 30mg/kg decreased bone resorption markers to a level roughly half of that in the Sham group, while keeping bone formation markers level above that in the Sham monkeys. Changes in DXA BMD confirmed that ONO-5334 at doses 6 and 30mg/kg increased BMD to a level greater than that in the Sham group in all examined sites. In the proximal tibia, in vivo pQCT analysis showed that ONO-5334 at doses 6 and 30mg/kg suppressed trabecular BMD loss to the sham level. However, ONO-5334 increased cortical BMD, cortical area and cortical thickness to a level greater than that in the Sham group, suggesting that ONO-5334 improves both cortical BMD and cortical geometry. Histomorphometric analysis revealed that ONO-5334 suppressed bone formation rate (BFR) at osteonal site in the midshaft femur but did not influence OVX-induced increase in BFR at either the periosteal or endocortical surfaces. Unlike alendronate, ONO-5334 increased osteoclasts surface (Oc.S/BS) and serum tartrate-resistant acid phosphatise 5b (TRAP5b) activity, highlighting the difference in the mode of action between these two drugs. Our results suggest that ONO-5334 has therapeutic potential not only in vertebral bones, but also in non-vertebral bones. PMID:26921823

  8. Study on thd relationship between serum fibrosis markers levels, bone marrow scintigraphy patterns and clinical staging in patients with chronic ldiopathic myelofibrosis (CIMF)

    International Nuclear Information System (INIS)

    Objective: To study the changes of serum fibrosis markers levels and the pattern of bone marrow scintigraphy and their relationship with clinical stages in patients with chronic idiopathic myelofibrosis (CIMF). Methods: Transforming growth factor-β1 (TGF-β1) and platelet derived growth factor (PDGF) (with ELISA), serum typeIII procollagen (PCIII), type IV collagen (C-IV), and laminin (LN) (with RIA) were detected in 46 with patients with chronic idiopathic myelofibrosis and 34 controls. Bone marrow scintigraphy 99m Tc-sulfur colloid was performed in the 46 CIMF patients. Results: Five fibrosis markers in patients with CIMF were significantly higher than those in controls. There were significantly differences among the levels in different stages, especially with sclerotic stage in CIMF patients. The imaging patterns were classified into three types according to the radio-distribution and activity of bone marrow: 13 cases of increased imaging in 14 patients of cellular stage, 17 cases with creased expansion imaging in 19 patients of collagen fiber stage and 13 cases (100%) with totally depressed imaging in patients of sclerotic stage. Conclusion: As the disease progressed, the serum fibrosis markers levels gradually incroased and the scintigraphy patterns corresponded well to the clinical staging. (authors)

  9. Alveolar bone mass in pre- and postmenopausal women with serum calcium as a marker: A comparative study

    Directory of Open Access Journals (Sweden)

    Amitha Ramesh

    2011-01-01

    Conclusion: Postmenopausal women exhibit a reduced alveolar bone mass and lowered levels of serum total calcium with the increasing age. These changes may be useful indicators for low skeletal bone mineral density or osteoporosis.

  10. Evaluation of sequential FDG-PET/CT for monitoring bone metastasis of breast cancer during therapy. Correlation between morphological and metabolic changes with tumor markers

    International Nuclear Information System (INIS)

    The purpose of this study was to clarify the significance of positron emission tomography (PET) and computed tomography (CT) findings for evaluating the bone metastasis of breast cancer during therapy. Forty-seven patients with bone metastases from breast cancer who underwent sequential 18F-flourodeoxyglucose (FDG)-PET/CT studies during therapy were enrolled. A total of 771 lesions were identified. The changes in the PET and CT findings were compared with the tumor marker levels in each patient by calculating the weighted kappa value. The correlation between the PET and CT findings was examined for each lesion by an adjusted Chi-square test. The change in the tumor marker levels was substantially correlated with the PET findings and moderately correlated with the CT findings (weighted kappa=0.780 and 0.585 for quadratic weighting, respectively). An increase in FDG uptake was correlated with lytic changes on the CT images (62/65, 95.4%, p<0.05). Sclerotic changes suggested improvement, but sclerosis and progression occurred at the same time in some lesions. Changes of FDG uptake are useful for evaluating individual bone metastases in cases of breast cancer during therapy. Lytic change on CT images suggests progression of bone metastasis. The lysis-progression/sclerosis-improvement pattern was observed in the majority of subjects, but a sclerosis-progression pattern was also observed. The hybrid pattern of increase of FDG uptake on PET/lytic change on CT is most accurate to show progression of bone metastases. Assessments of these processes during therapy are necessary for the precise evaluation of bone metastases. (author)

  11. Raman spectroscopy of bone metastasis

    Science.gov (United States)

    Esmonde-White, Karen A.; Sottnik, Joseph; Morris, Michael; Keller, Evan

    2012-02-01

    Raman spectroscopy of bone has been used to characterize chemical changes occurring in diseases such as osteoporosis, osteoarthritis and osteomyelitis. Metastasis of cancer into bone causes changes to bone quality that are similar to those observed in osteoporosis, such as decreased bone strength, but with an accelerated timeframe. In particular, osteolytic (bone degrading) lesions in bone metastasis have a marked effect on patient quality of life because of increased risk of fractures, pain, and hypercalcemia. We use Raman spectroscopy to examine bone from two different mouse models of osteolytic bone metastasis. Raman spectroscopy measures physicochemical information which cannot be obtained through standard biochemical and histological measurements. This study was reviewed and approved by the University of Michigan University Committee on the Care and Use of Animals. Two mouse models of prostate cancer bone metastasis, RM1 (n=3) and PC3-luc (n=4) were examined. Tibiae were injected with RM1 or PC3-luc cancer cells, while the contralateral tibiae received a placebo injection for use as controls. After 2 weeks of incubation, the mice were sacrificed and the tibiae were examined by Raman microspectroscopy (λ=785 nm). Spectroscopic markers corresponding to mineral stoichiometry, bone mineralization, and mineral crystallinity were compared in spectra from the cancerous and control tibiae. X-ray imaging of the tibia confirmed extensive osteolysis in the RM1 mice, with tumor invasion into adjoining soft tissue and moderate osteolysis in the PC3-luc mice. Raman spectroscopic markers indicate that osteolytic lesions are less mineralized than normal bone tissue, with an altered mineral stoichiometry and crystallinity.

  12. Effects of Resistive Vibration Exercise Combined with Whey Protein and KHCO3 on Bone Tturnover Markers in Head-down Tilt Bed Rest (MTBR-MNX Study)

    Science.gov (United States)

    Graf, Sonja; Baecker, Natalie; Buehlmeier, Judith; Fischer, Annelie; Smith, Scott M.; Heer, Martina

    2014-01-01

    High protein intake further increases bone resorption markers in head-down tilt bed rest (HDBR), most likely induced by low-grade metabolic acidosis. Adding an alkaline salt to a diet with high protein content prevents this additional rise of bone resorption markers in HDBR. In addition, high protein intake, specifically whey protein, increases muscle protein synthesis and improves glucose tolerance, which both are affected by HDBR. Resistive vibration exercise (RVE) training counteracts the inactivity-induced bone resorption during HDBR. To test the hypothesis that WP plus alkaline salt (KHCO3) together with RVE during HDBR will improve bone turnover markers, we conducted a randomized, three-campaign crossover design study with 12 healthy, moderately fit male subjects (age 34+/-8 y, body mass [BM] 70 +/- 8 kg). All study campaigns consisted of a 7-d ambulatory period, 21days of -6 deg. head-down tilt bed rest (HDBR), and a 6-d recovery period. Diet was standardized and identical across phases. In the control (CON) campaign, subjects received no supplement or RVE. In the intervention campaigns, subjects received either RVE alone or combined with WP and KHCO3 (NEX). WP was applied in 3 doses per day of 0.6 g WP/kg BM together with 6 doses of 15 mmol KHCO3 per day. Eleven subjects completed the RVE and CON campaign, 8 subjects completed all three campaigns. On day 21 of HDBR excretion of the bone resorption marker C-telopeptide (CTX) was 80+/-28% (p<0.001) higher than baseline, serum calcium concentrations increased by 12 +/- 29% (p<0.001) and serum osteocalcin concentrations decreased by 6+/-12% (p=0.001). Urinary CTX excretion was 11+/- 25% (p=0.02) lower on day 21 of HDBR in the RVE- and tended to decrease by 3+/- 22% (p=0.06) in the NEX campaign compared to CON. Urinary calcium excretion was higher on day 21 in HDBR in the RVE and NEX (24+/- 43% p=0.01; 25+/- 37% p=0.03) compared to the CON campaign. We conclude that combination of RVE with WP/KHCO3 was not

  13. Vitamin K_2 Alters Bone Metabolism Markers in Hemodialysis Patients with a Low Serum Parathyroid Hormone Level

    OpenAIRE

    Ochiai, Mariko; Nakashima, Ayumu; Takasugi, Norihisa; Kiribayashi, Kei; KAWAI, Toru; Usui, Koji; Shigemoto, Kenichiro; HAMAGUCHI, Naoki; Kohno, Nobuoki; Yorioka, Noriaki

    2011-01-01

    Background: A low level of intact parathyroid hormone (PTH) is an indicator of adynamic bone disease in hemodialysis patients, and is associated with a significant increase of all-cause mortality. Thus, effective treatment for adynamic bone disease is required. We previously investigated the effect of vitamin K2 on adynamic bone disease. In this study, we assessed the efficacy of oral vitamin K2 in a controlled trial. Methods: Forty hemodialysis patients with low intact PTH levels (

  14. The relationship between boron, stress hormones and bone markers in humans of different ages, life style and health status

    OpenAIRE

    Chummun, Narain Harry

    2000-01-01

    Hormones (sex hormones, thyroxine, cortisol and parathyroid), cytokines (interleukins-1 and 2 and tumour necrosis factor), life style (exercise, smoking and reproductive history), nutrition (calcium, meat, vegetables, vitamin D, caffeine and alcohol) and diseases (diabetes mellitus, malabsorption and thyrotoxicosis) affect bone mass. The loss of calcium, phosphate and magnesium from bone makes it weaker which enhances the incidence of bone diseases such as osteoporosis and osteoarthritis and ...

  15. Congenital dyserythropoiesis and progressive alopecia in Polled Hereford calves: hematologic, biochemical, bone marrow cytologic, electrophoretic, and flow cytometric findings.

    Science.gov (United States)

    Steffen, D J; Elliott, G S; Leipold, H W; Smith, J E

    1992-01-01

    Congenital dyserythropoiesis with dyskeratosis is a slow, progressive, and often fatal disease in Polled Hereford calves. Affected calves have a macrocytic normochromic anemia with a mild reticulocytosis. Studies indicate that calves are hyperferremic with increased saturation of serum total iron binding capacity, which rules out iron deficiency as a cause. Other secondary causes of dyserythropoiesis, including cobalamin and folate deficiencies, are unlikely because serum cobalamin and folate levels of affected calves were normal. Virus isolation was negative, and failure to identify bovine retroviral antigens or antibodies from several calves suggested that viral agents were not involved. Bone marrow cytologic findings were similar to those in congenital hereditary dyserythropoiesis in humans and included occasional multinucleate cells, internuclear chromatin bridging between nuclei of partially divided cells, and, more frequently, irregular nuclear shapes and chromatin patterns. DNA content and cell cycle distribution of erythroid cells appeared normal, and no electrophoretic abnormalities were detected in erythrocyte membrane proteins. The Polled Hereford syndrome is similar in many ways to type I congenital dyserythropoiesis in humans and may be an appropriate biomedical model for studying erythroid proliferation during dyserythropoiesis. PMID:1348189

  16. Bone Mineral Density in Iranian Kidney Graft Recipients and Its Relation to Biochemical and PTH Serum Levels

    Directory of Open Access Journals (Sweden)

    M Mahdavi

    2004-03-01

    Full Text Available Little is known about relation of transplantation and bone. We conducted a study to find out the frequency and predictors of osteoporosis in kidney transplanted patients in Iran. DEXA (DPX-MD, GE, Lunar corporation, USA used for BMD of 61 kidney transplanted patients. Calcium, phosphate, alkaline phosphatase, BUN, creatinine and PTH, were also measured. Fourty four percent of patients were men (27. Mean±SD of age of men and women was 44.3±10.44 and 40/7± 13.77, respectively. Mean±SD of transplant duration was 33.9± 33. 2 months Mean±SD of dialysis time was 12±14 months. 29.5% of patients had osteoporosis. Osteoporosis was significantly higher in subjects with BMI less than 19 kg/m2 (P= 0.007. Alkaline phosphatase had a negative relation with osteoporosis in neck (P= 0.001. Other parameters had no significant relationship with osteoporosis. High prevalence of osteoporosis found in Iranian kidney graft recipients. Screening and therapeutic intervention in these patients is urgently needed.

  17. Comparative morphology of the hominin and African ape hyoid bone, a possible marker of the evolution of speech.

    Science.gov (United States)

    Steele, James; Clegg, Margaret; Martelli, Sandra

    2013-10-01

    This study examines the morphology of the hyoid in three closely related species, Homo sapiens, Pan troglodytes, and Gorilla gorilla. Differences and similarities between the hyoids of these species are characterized and used to interpret the morphology and affi nities of the Dikika A. afarensis, Kebara 2 Neanderthal, and other fossil hominin hyoid bones. Humans and African apes are found to have distinct hyoid morphologies. In humans the maximum width across the distal tips of the articulated greater horns is usually slightly greater than the maximum length (distal greater horn tip to most anterior point of the hyoid body in the midline). A different pattern is usually found in the African ape hyoids, which have much greater maximum lengths. In humans, the hyoid body is also much more anteroposteriorly shallow in proportion to its height and width, and this is true for all age classes. The Dikika australopithecine hyoid body proportions are chimpanzeelike. A discriminant function analysis, using a larger subadult sample from the three extant species than that reported by Alemseged et al. (2006), confirms this finding. The Kebara hyoid dimensions (body alone, and articulated body and greater horns) are almost all within the observed range for human hyoids. Discriminant functions clearly distinguish human from African ape hyoids and classify the Kebara 2 hyoid as human (confirming the finding of Arensburg et al. 1989). Our virtual dissection of a chimpanzee air sac system shows its subhyoid extension into the dorsal hyoid body. Following Alemseged et al. (2006), the expanded bulla characteristic of the African ape and australopithecine hyoid body is therefore interpreted as refl ecting the presence of such a laryngeal air sac extension. Its absence in the human, Neanderthal, and H. heidelbergensis (Atapuerca SH) hyoids implicates the loss of the laryngeal air sacs as a derived Neanderthal and modern human trait, which evolved no later than the middle Pleistocene. If

  18. Clinical application value of bone turnover markers in non-small-cell lung cancer patients with bone metastases%骨转换标志物在非小细胞肺癌骨转移临床应用价值的研究

    Institute of Scientific and Technical Information of China (English)

    Zhiyu Wang; Chen Yang; Yumei Yang; Zan Shen; Hui Zhao; Yang Yao

    2011-01-01

    Objective: The purpose of this study was to assess the clinical application value of bone turnover markers in non-small-cell lung cancer (NSCLC) patients with bone metastases. Including diagnosing bone metastases, detecting bone metastatic spread. Methods: Alkaline phosphatase (AKP), β-C-terminal telopeptide of type Ⅰ collagen (β-CTx), osteocalcin (OST) and bone alkaline phosphatase (BALP) were measured in 76 patients with bone metastases from NSCLC and 44 normal people. Results: The level of AKP, β-CTx and BALP in patients with bone metastasis was significantly higher than in the normal people. Significant correlation was observed among bone turnover markers. The levels of BALP and OST were significantly correlated with the extent of bone metastasis. The patients with high-level CTx and low-level BALP had higher risk of pathologic fracture. Conclusion: In NSCLC patients with bone metastases, bone turnover markers can help to make diagnosis and evaluate the severity. It will have a wide range of use in clinical practice.

  19. Effects of oligofructose-enriched inulin on intestinal absorption of calcium and magnesium and bone turnover markers in postmenopausal women

    Science.gov (United States)

    Deficiency of oestrogen at menopause decreases intestinal Ca absorption, contributing to a negative Ca balance and bone loss. Mg deficiency has also been associated with bone loss. The purpose of the present investigation was to test the hypothesis that treatment with a spray-dried mixture of chicor...

  20. Greater change in bone turnover markers for efavirenz/emtricitabine/tenofovir disoproxil fumarate versus dolutegravir + abacavir/lamivudine in antiretroviral therapy-naive adults over 144 weeks

    Science.gov (United States)

    Tebas, Pablo; Kumar, Princy; Hicks, Charles; Granier, Catherine; Wynne, Brian; Min, Sherene; Pappa, Keith

    2015-01-01

    Objective: Antiretroviral therapy initiation has been linked to bone mineral density and bone biomarker changes. We assessed long-term bone turnover biomarker effects over 144 weeks in patients initiating dolutegravir (DTG) + abacavir/lamivudine (ABC/3TC) versus efavirenz/emtricitabine/tenofovir disoproxil fumarate (EFV/FTC/TDF). Methods: Patients randomized in SINGLE received DTG (50 mg once daily) + ABC/3TC or fixed-dose combination EFV/FTC/TDF. We evaluated vitamin D serum levels and bone turnover markers (BTMs), including type 1 collagen cross-linked C-telopeptide (CTx), osteocalcin, bone-specific alkaline phosphatase (BSAP), and procollagen type 1 N-terminal propeptide (P1NP), at baseline and weeks 48, 96, and 144. Results: Among the 833 enrolled patients (68% white, 85% men), baseline median age was 35 years (range 18–85), median CD4+ was 338 cells/μl, and median BMI was 24 kg/m2. Fifty-three percent of patients smoked, and 6% reported baseline vitamin D use, with no meaningful differences between groups. Relative to baseline, CTx, osteocalcin, BSAP, and P1NP increased; vitamin D decreased in both groups at weeks 48, 96, and 144. Changes from baseline typically peaked at weeks 48 or 96 and for the four analytes, excluding vitamin D, with the EFV/FTC/TDF group having significantly greater changes from baseline at all time points. Conclusion: DTG + ABC/3TC in antiretroviral therapy-naive patients resulted in significantly lower increases in BTMs (CTx, osteocalcin, BSAP, P1NP) compared with EFV/FTC/TDF over 144 weeks. The observed changes are consistent with results from other smaller, randomized trials. These differences in BTMs likely correlate with changes in bone mineral density over time. PMID:26355674

  1. Bone mineral density and bone markers in patients with a recent low-energy fracture: effect of 1 y of treatment with calcium and vitamin D

    DEFF Research Database (Denmark)

    Hitz, Mette F; Jensen, Jens-Erik B; Eskildsen, Peter C

    2007-01-01

    . RESULTS: A total of 122 patients were included (84% women; x +/- SD age: 70 +/- 11 y); 68% completed the study. In an intention-to-treat analysis, LBMD increased in the intervention group and decreased in the placebo group, and the difference between the groups was significant after 12 mo: 0.931 +/- 0.......211 compared with 0.848 +/- 0.194 (P<0.05). No significant change was shown for HBMD. The effect of treatment was more pronounced in patients aged <70 y. The intervention decreased bone turnover. PTH was significantly lower in the intervention group (P<0.01) for the LEF patients. ICTP and change in LBMD were...... significantly related to physical performance. CONCLUSIONS: A 1-y intervention with calcium and vitamin D reduced bone turnover, significantly increased BMD in patients younger than 70 y, and decreased bone loss in older patients. The effect of treatment was related to physical performance....

  2. 对比不同心肌损伤生化标记物检验的临床意义%Compare the Clinical Significance of the Biochemical Markers of Myocardial Damage Inspection

    Institute of Scientific and Technical Information of China (English)

    王博; 马昉

    2015-01-01

    目的:对比不同心肌损伤生化标记物检验的临床意义。方法随机选自2011年10月~2012年10月我院收治的80例心肌损伤患者,采用 AU640全自动型的生化仪对其心肌钙蛋白、肌红蛋白 I、血同型半胱氨酸、脑利钠肽前体、肌酸激酶同工酶水平进行相应的检测,对检验过程中不同标记物的应用价值及特点进行分析。结果80例心肌损伤患者经过相应的检测之后,灵敏度最高的是脑利钠肽前体,最低的是血同型半胱氨酸。结论在五种不同的心肌损伤生化标记物的检验过程中,各种标记物均可发挥明显的指导意义,对不同的标记物进行联合检测可以使诊治效果得到提升。%Objective To compare the clinical significance of the biochemical markers of myocardial damage inspection. Methods Randomly selected from October 2011 to October 2012,our hospital 80 cases of patients with myocardial injury,using type AU640 automatic biochemical instrument on the myocardial calcium,protein,myoglobin I,blood homocysteine,brain natriuretic peptide precursor,creatine kinase isoenzyme level corresponding detection,in the process of inspection application value and characteristics of different markers were analyzed. Results 80 cases of patients with myocardial injury after the corresponding detection,sensitivity is the highest brain natriuretic peptide precursor,blood homocysteine are the lowest. Conclusion In five different biochemical markers of myocardial injury during the process of inspection,al kinds of markers can play a significant guiding significance,for different markers for joint detection can make make a diagnosis and give treatment effect is improved.

  3. Optimizing Bone Health in Duchenne Muscular Dystrophy

    Directory of Open Access Journals (Sweden)

    Jason L. Buckner

    2015-01-01

    Full Text Available Duchenne muscular dystrophy (DMD is an X-linked recessive disorder characterized by progressive muscle weakness, with eventual loss of ambulation and premature death. The approved therapy with corticosteroids improves muscle strength, prolongs ambulation, and maintains pulmonary function. However, the osteoporotic impact of chronic corticosteroid use further impairs the underlying reduced bone mass seen in DMD, leading to increased fragility fractures of long bones and vertebrae. These serious sequelae adversely affect quality of life and can impact survival. The current clinical issues relating to bone health and bone health screening methods in DMD are presented in this review. Diagnostic studies, including biochemical markers of bone turnover and bone mineral density by dual energy X-ray absorptiometry (DXA, as well as spinal imaging using densitometric lateral spinal imaging, and treatment to optimize bone health in patients with DMD are discussed. Treatment with bisphosphonates offers a method to increase bone mass in these children; oral and intravenous bisphosphonates have been used successfully although treatment is typically reserved for children with fractures and/or bone pain with low bone mass by DXA.

  4. Bone changes in alcoholic liver disease

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    Alcoholism has been associated with growth impairment,osteomalacia, delayed fracture healing, and asepticnecrosis (primarily necrosis of the femoral head), butthe main alterations observed in the bones of alcoholicpatients are osteoporosis and an increased risk offractures. Decreased bone mass is a hallmark of osteoporosis,and it may be due either to decreased bone synthesis and/or to increased bone breakdown. Ethanolmay affect both mechanisms. It is generally acceptedthat ethanol decreases bone synthesis, and most authorshave reported decreased osteocalcin levels (a "marker" ofbone synthesis), but some controversy exists regardingthe effect of alcohol on bone breakdown, and, indeed,disparate results have been reported for telopeptideand other biochemical markers of bone resorption.In addition to the direct effect of ethanol, systemicalterations such as malnutrition, malabsorption, liverdisease, increased levels of proinflammatory cytokines,alcoholic myopathy and neuropathy, low testosteronelevels, and an increased risk of trauma, play contributoryroles. The treatment of alcoholic bone disease should beaimed towards increasing bone formation and decreasingbone degradation. In this sense, vitamin D and calciumsupplementation, together with biphosphonates areessential, but alcohol abstinence and nutritional improvementare equally important. In this review we study thepathogenesis of bone changes in alcoholic liver diseaseand discuss potential therapies.

  5. Markers of type I collagen degradation and synthesis in the monitoring of treatment response in bone metastases from breast carcinoma.

    OpenAIRE

    Blomqvist, C; Risteli, L; Risteli, J.; Virkkunen, P.; Sarna, S.; Elomaa, I.

    1996-01-01

    Thirty-six patients with bone metastases included in a trial of supportive calcitonin on the treatment response to systemic therapy were monitored by conventional radiography, conventional indicators of bone metabolism [alkaline phosphatase (AP), osteocalcin (gla), urinary hydroxyproline excretion (OHP), urinary calcium (uCa), serum calcium (sCa)] and collagen metabolites (ICTP, the pyridinoline cross-linked carboxy-terminal telopeptide of type I collagen; PICP, the carboxy-terminal propeptid...

  6. Choline-stabilized orthosilicic acid supplementation as an adjunct to Calcium/Vitamin D3 stimulates markers of bone formation in osteopenic females: a randomized, placebo-controlled trial

    Directory of Open Access Journals (Sweden)

    Jugdaohsingh Ravin

    2008-06-01

    Full Text Available Abstract Background Mounting evidence supports a physiological role for silicon (Si as orthosilicic acid (OSA, Si(OH4 in bone formation. The effect of oral choline-stabilized orthosilicic acid (ch-OSA on markers of bone turnover and bone mineral density (BMD was investigated in a double-blind placebo-controlled trial. Methods Over 12-months, 136 women out of 184 randomized (T-score spine Results Overall, there was a trend for ch-OSA to confer some additional benefit to Ca and Vit D3 treatment, especially for markers of bone formation, but only the marker for type I collagen formation (PINP was significant at 12 months for the 6 and 12 mg Si dose (vs. placebo without a clear dose response effect. A trend for a dose-corresponding increase was observed in the bone resorption marker, collagen type I C-terminal telopeptide (CTX-I. Lumbar spine BMD did not change significantly. Post-hoc subgroup analysis (baseline T-score femur Conclusion Combined therapy of ch-OSA and Ca/Vit D3 had a potential beneficial effect on bone collagen compared to Ca/Vit D3 alone which suggests that this treatment is of potential use in osteoporosis. NTR 1029

  7. Seasonal changes in vitamin D status and bone turnover in healthy Irish postmenopausal women

    DEFF Research Database (Denmark)

    Hill, T.R.; McCarthy, D.; Jakobsen, Jette;

    2007-01-01

    Objectives: To examine the effect of season on biochemical markers of bone turnover in 51-to 75-year-old Irish women and to investigate whether such changes are related to vitamin D status. Design: Longitudinal observational study. Setting: Cork, Ireland (52 degrees N). Subjects: 76 apparently he...

  8. The effect of a 'vanishing twin' on biochemical and ultrasound first trimester screening markers for Down's syndrome in pregnancies conceived by assisted reproductive technology

    DEFF Research Database (Denmark)

    Gjerris, A C; Loft, A; Pinborg, Anja; Christiansen, M; Tabor, A

    2008-01-01

    BACKGROUND: Previous studies have found that 1 in 10 in vitro fertilization (IVF) singletons originates from a twin gestation. First trimester Down's syndrome screening markers are altered in assisted reproductive techniques (ART) pregnancies compared with spontaneously conceived pregnancies. The...

  9. Comparison of the effects of eldecalcitol with either raloxifene or bisphosphonate on serum tartrate resistant acid phosphatase-5b, a bone resorption marker, in postmenopausal osteoporosis

    Science.gov (United States)

    Takada, Junichi; Ikeda, Satoshi; Kusanagi, Tetsuya; Mizuno, Satoshi; Wada, Hiroshi; Iba, Kousuke; Yoshizaki, Takashi; Yamashita, Toshihiko

    2016-01-01

    Summary Objective This study analyzes whether concomitant raloxifene (RLX) or bisphosphonates (BP) plus eldecalcitol (ELD) has excessive suppressive effects on a bone resorption marker during the first 6 months of treatment in postmenopausal women in real-world setting. Methods 285 postmenopausal osteoporotic patients who had been treated with RLX or BP plus ELD were evaluated the bone resorption marker, serum tartrate resistant acid phosphatase-5b (TRACP-5b), during the first 6 months of treatment. Results In drug-naïve group (not received osteoporosis medications before the administration, n=70), the concomitant RLX or BP with ELD significantly decreased levels of TRACP-5b without severe suppression. In vitamin D switch group [RLX or BP plus alfacalcidol (ALF) and then switched to RLX or BP plus ELD, n=215], the replacing ALF with ELD further and significantly decreased TRACP-5b and tertile analyses based on baseline values were significantly decreased far more in the highest, compared with the lowest tertile in the ELD+RLX and ELD+BP groups. Conclusion ELD combined with RLX or BP administered for 6 months to postmenopausal women with osteoporosis who were drug-naïve or who had switched medications significantly reduced and maintained TRACP-5b values within the reference range. PMID:27252739

  10. A population of serumdeprivation-induced bone marrow stem cells (SD-BMSC) expresses marker typical for embryonic and neural stem cells

    International Nuclear Information System (INIS)

    The bone marrow represents an easy accessible source of adult stem cells suitable for various cell based therapies. Several studies in recent years suggested the existence of pluripotent stem cells within bone marrow stem cells (BMSC) expressing marker proteins of both embryonic and tissue committed stem cells. These subpopulations were referred to as MAPC, MIAMI and VSEL-cells. Here we describe SD-BMSC (serumdeprivation-induced BMSC) which are induced as a distinct subpopulation after complete serumdeprivation. SD-BMSC are generated from small-sized nestin-positive BMSC (S-BMSC) organized as round-shaped cells in the top layer of BMSC-cultures. The generation of SD-BMSC is caused by a selective proliferation of S-BMSC and accompanied by changes in both morphology and gene expression. SD-BMSC up-regulate not only markers typical for neural stem cells like nestin and GFAP, but also proteins characteristic for embryonic cells like Oct4 and SOX2. We hypothesize, that SD-BMSC like MAPC, MIAMI and VSEL-cells represent derivatives from a single pluripotent stem cell fraction within BMSC exhibiting characteristics of embryonic and tissue committed stem cells. The complete removal of serum might offer a simple way to specifically enrich this fraction of pluripotent embryonic like stem cells in BMSC cultures

  11. Application of Biochemical Markers for Population Level Assessment of a White Sucker (Catostomus commersoni) Population Exposed to Bleached Kraft Pulp Mill Effluent

    Science.gov (United States)

    A need in ecological risk assessment is an approach that can be used to link chemically-induced alterations in molecular and biochemical endpoints to adverse outcomes in whole organisms and populations. A predictive population model was developed to translate changes in fecundit...

  12. Rhus javanica Gall Extract Inhibits the Differentiation of Bone Marrow-Derived Osteoclasts and Ovariectomy-Induced Bone Loss

    Directory of Open Access Journals (Sweden)

    Tae-Ho Kim

    2016-01-01

    Full Text Available Inhibition of osteoclast differentiation and bone resorption is a therapeutic strategy for the management of postmenopausal bone loss. This study investigated the effects of Rhus javanica (R. javanica extracts on bone marrow cultures to develop agents from natural sources that may prevent osteoclastogenesis. Extracts of R. javanica (eGr cocoons spun by Rhus javanica (Bell. Baker inhibited the osteoclast differentiation and bone resorption. The effects of aqueous extract (aeGr or 100% ethanolic extract (eeGr on ovariectomy- (OVX- induced bone loss were investigated by various biochemical assays. Furthermore, microcomputed tomography (µCT was performed to study bone remodeling. Oral administration of eGr (30 mg or 100 mg/kg/day for 6 weeks augmented the inhibition of femoral bone mineral density (BMD, bone mineral content (BMC, and other factors involved in bone remodeling when compared to OVX controls. Additionally, eGr slightly decreased bone turnover markers that were increased by OVX. Therefore, it may be suggested that the protective effects of eGr could have originated from the suppression of OVX-induced increase in bone turnover. Collectively, the findings of this study indicate that eGr has potential to activate bone remodeling by inhibiting osteoclast differentiation and bone loss.

  13. Effect of short-term upper-body resistance training on muscular strength, bone metabolic markers, and BMD in premenopausal women

    Directory of Open Access Journals (Sweden)

    Liang MT

    2012-11-01

    Full Text Available Michael TC Liang,1 Lorena Quezada,1 WY Jamie Lau,1 Bulent Sokmen,2 Thomas W Spalding11Department of Kinesiology and Health Promotion, California State Polytechnic University, Pomona, CA, USA; 2Department of Kinesiology, Sonoma State University, Rohnert Park, CA, USAAbstract: To examine the effect of a 10-week upper-body resistance training program on bone turnover markers and site-specific bone mineral density (BMD in the wrist and distal half of the ulna and radius in untrained and healthy young premenopausal women.Methods: Twenty-two subjects (aged 22.1 ± 1.8 years were randomly assigned to a resistance training (n = 12 or no training control (n = 10 group. The following outcome variables were measured before and after 10 weeks of resistance training: (1 bone formation biomarker osteocalcin, and bone resorption biomarker tartrate-resistant acid phosphatase isoform 5b; (2 BMD in the wrist and distal half of the ulna and radius; (3 isokinetic strength of the elbow and knee extensors and flexors; (4 dynamic strength of the arm extensors and flexors; and (5 maximum number of push-ups.Results: The 10-week upper body resistance training intervention resulted in improved strength performance in push-ups (resistance training versus control: P < 0.05, chest presses (P < 0.05, and pulldowns (P < 0.05. However, there was no improvement in the BMD of the wrist (P > 0.05, BMD of the distal half of the ulna and radius (P > 0.05, and metabolic biomarkers osteocalcin (P > 0.05 and tartrate-resistant acid phosphatase isoform 5b (P > 0.05, except for the osteocalcin/tartrate-resistant acid phosphatase isoform 5b ratio. Also, no improvement in the resistance training group was observed for isokinetic strength of the knee and elbow flexion/extension.Conclusion: Upper-body muscular strength performance, but not bone metabolic markers and BMD of the wrist, can be improved with a 10-week upper body resistance training program of the nonweight-bearing limbs in

  14. UNREMITTING EARLY STAGE HODGKIN’S DISEASE: REPORT OF 7 CASES AND BONE MARROW TISSUE IMMUNOHISTOCHEMICAL MARKER STUDY

    Directory of Open Access Journals (Sweden)

    D. Tamiolakis

    2006-07-01

    Full Text Available Bone marrow is infrequently implicated in early stages of Hodgkin’s disease. We studied the immunohistochemical bone marrow tissue of 7 out of 20 cases with early stage Hodgkin’s disease of the mixed cellularity variant, diagnosed by lymph node biopsy at initial presentation, not responding to radiotherapy alone, in order to examine possible marrow attack. A statistically significant prevalence of CD45, CD45RO, and CD4 positive infiltrates, to the advantage of unremitting hosts, was found. The predominance of CD4-positive cells in the bone marrow space might be suggestive of involvement in the process and could explain the abnormal cytokine production leading to reduced T-cell immunity and inefficient antitumor response despite the existence of a vast majority of reactive infiltrating immune cells.

  15. Markers of bone metabolism are affected by renal function and growth hormone therapy in children with chronic kidney disease

    DEFF Research Database (Denmark)

    Doyon, Anke; Fischer, Dagmar Christiane; Bayazit, Aysun Karabay;

    2015-01-01

    chronic kidney disease cohort. Methods: Bone alkaline phosphatase (BAP), tartrate-resistant acid phosphatase 5b (TRAP5b), sclerostin and C-terminal FGF-23 (cFGF23) normalized for age and sex were analyzed in 556 children aged 6-18 years with an estimated glomerular filtration rate (eGFR) of 10-60 ml...

  16. Osteoporosis and Osteopathy Markers in Patients with Mastocytosis

    Directory of Open Access Journals (Sweden)

    Nilüfer Alpay Kanıtez

    2015-03-01

    Full Text Available OBJECTIVE: Osteoporosis, osteosclerosis, and lytic bone lesions have been observed in patients with systemic mastocytosis (SM. We examined bone mineral density (BMD biochemical turnover markers and serum tryptase levels in SM, which is considered a rare disease. METHODS: Seventeen adult patients (5 females, 12 males; median age: 33 years, range: 20-64 with mastocytosis were included in this study. We investigated the value of quantitative ultrasound (QUS of the calcaneus in the assessment of BMD in SM patients, as well as BMD of the lumbar spine (L1-L4, femoral neck, and distal radius using dual energy x-ray absorptiometry (DXA and plasma tryptase levels, biochemical markers of bone turnover. RESULTS: At lumbar spine L1-L4, the femoral neck, and the distal radius or as calcaneus stiffness, 12 of 17 patients had T-scores of less than -1 at least at 1 site, reflecting osteopenia. Three of 17 patients had T-scores showing osteoporosis (T-score <-2.5. There was no relationship between DXA and bone lesion severity. We also found a significant positive correlation between tryptase levels and disease severity, as well as between disease severity and pyridinoline (p<0.01 by Spearman’s test. CONCLUSION: DXA and calcaneal QUS may not be appropriate techniques to assess bone involvement in SM patients because of the effects of osteosclerosis. This study further shows that the osteoclastic marker pyridinoline is helpful in patients with severe disease activity and sclerotic bone lesions to show bone demineralization.

  17. Investigation of two novel biochemical markers of inflammation, matrix metalloproteinase and cathepsin generated fragments of C-reactive protein, in patients with ankylosing spondylitis

    DEFF Research Database (Denmark)

    Skjøt-Arkil, Helene; Schett, Georg; Zhang, Chen;

    2012-01-01

    prognostic marker for AS has not provided the sought accuracy and specificity. We hypothesized that local enzymatic activity in the disease-affected tissue, which is associated with extensive tissue turnover may, by cleavage, modify the CRP produced in the liver. These cleavage products may provide...

  18. Choline-stabilized orthosilicic acid supplementation as an adjunct to Calcium/Vitamin D3 stimulates markers of bone formation in osteopenic females: a randomized, placebo-controlled trial

    OpenAIRE

    Jugdaohsingh Ravin; Swaminathan Rami; Demeester Nathalie; Bevan Liisa; Clement Gail; Anderson Simon H; Calomme Mario R; Spector Tim D; Berghe Dirk; Powell Jonathan J

    2008-01-01

    Abstract Background Mounting evidence supports a physiological role for silicon (Si) as orthosilicic acid (OSA, Si(OH)4) in bone formation. The effect of oral choline-stabilized orthosilicic acid (ch-OSA) on markers of bone turnover and bone mineral density (BMD) was investigated in a double-blind placebo-controlled trial. Methods Over 12-months, 136 women out of 184 randomized (T-score spine < -1.5) completed the study and received, daily, 1000 mg Ca and 20 μg cholecalciferol (Vit D3) and th...

  19. Reengineered graft copolymers as a potential alternative for the bone tissue engineering application by inducing osteogenic markers expression and biocompatibility.

    Science.gov (United States)

    Thangavelu, Muthukumar; R Narasimha, Raghavan; Adithan, Aravinthan; A, Chandrasekaran; Jong-Hoon, Kim; Thotapalli Parvathaleswara, Sastry

    2016-07-01

    Composite scaffolds of nano-hydroxyapatite with demineralized bone matrix were prepared and they were graft copolymerized for better bone regeneration and drug delivery applications. The graft copolymers were characterized for their physiochemical properties using conventional methods like FTIR, TGA, XRD and SEM. The scaffolds were seeded with 3T3 and MG63 cells for studying their biocompatibility and their temporal expression of ALP activity, the rate of calcium deposition and their gene expression of collagen type I (Coll-1), osteopontin (OP), osteonectin (ON), and osteocalcin (OC) were studied. In vivo studies were conducted using sub-cutaneous implantation models in male Wister rats for 6 months. Periodic radiography and post-autopsy histopathology was analysed at 15days, 1, 2, 3, 4, 5, and 6 months. The obtained in vitro results clearly confirm that the bone scaffolds prepared in this study are biocompatible, superior osteoinductivity, capable of supporting growth, maturation of MG 63 osteoblast like cells; the gene expression profile revealed that the material is capable of supporting the in vitro growth and maturation of osteoblast-like cells and maturation. The in vivo results stand a testimony to the in vitro results in proving the biocompatibility and osteoinductivity of the materials. PMID:26998863

  20. Using biochemical markers to assess the effects of imposed temperature stress on freshwater decapod crustaceans: Cherax quadricarinatus as a test case.

    Science.gov (United States)

    Bone, J W P; Renshaw, G M C; Furse, J M; Wild, C H

    2015-04-01

    The effects of thermal stress can impact negatively on the abundance and distribution of temperature-sensitive species, particularly freshwater crustaceans. This study investigated the effects of thermal stress on physiological and biochemical parameters at five treatment temperatures resulting in minimal (25 °C), moderate (27, 29 °C) or severe (31, 33 °C) thermal stress in the common tropical freshwater crayfish Cherax quadricarinatus. The aim was to develop a suite of stress-sensitive assays to use on threatened populations of freshwater crustaceans, particularly those restricted to cooler temperatures and only found in high altitude refugia. Significant increases in indicators of oxidative and metabolic stress were observed at 29 °C and were elevated further at 33 °C. After a 50-day acclimation to an imposed temperature stress, significant changes in the level of total glutathione, total lipids, muscular protein, total haemocyte count, lipid peroxidation and protein carbonyls were observed between treatments while superoxide dismutase activity and haemolymph protein concentrations did not change. The data provided proof of concept that measuring key biochemical responses to high temperature can provide a means of contrasting the level of thermal stress experienced between individuals of the same species adapted to different temperatures. The methods developed are expected to be of use in research on wild populations of other freshwater poikilothermic organisms, particularly those susceptible to increased environmental temperatures associated with climate change. PMID:25528146

  1. Normal Bone Turnover in Transient Hyperphosphatasemia

    Science.gov (United States)

    Kutilek, Stepan; Cervickova, Barbora; Bebova, Pavla; Kmonickova, Marie; Nemec, Vladimir

    2012-01-01

    Transient hyperphosphatasemia of infancy and early childhood (THI) is characterized by a temporary isolated elevation of serum alkaline phosphatase activity (ALP), predominantly its bone or liver isoform, in either sick or healthy children under 5 years of age. Return to normal ALP levels usually occurs within four months. Spontaneous rise of ALP might concern the physician, especially when treating seriously ill children. However, THI is considered a benign biochemical disorder with no clinical consequences. Some existing reports support the hypothesis that THI is a result of increased bone turnover. We present evidence of normal bone turnover in two children with THI. In a one-year-old girl and a boy of the same age, high ALP levels (31 and 109 μkat/L, respectively) were accidentally detected. The children had no signs of metabolic bone disease or of liver disease. The high ALP levels returned to normal in two months, thus fulfilling the diagnosis of THI. In both patients, serum parathyroid hormone and bone turnover markers, serum CrossLaps, and serum osteocalcin were neither elevated, nor did these markers follow the ALP dynamics, thus reflecting normal bone turnover in THI. Children with THI should be spared from extensive investigations and unnecessary vitamin D treatment. Conflict of interest:None declared. PMID:22664360

  2. Bone repair: Effects of physical exercise and LPS systemic exposition.

    Science.gov (United States)

    Nogueira, Jonatas E; Branco, Luiz G S; Issa, João Paulo M

    2016-08-01

    Bone repair can be facilitated by grafting, biochemical and physical stimulation. Conversely, it may be delayed lipopolysaccharide (LPS). Physical exercise exerts beneficial effects on the bone, but its effect on bone repair is not known. We investigated the effect of exercise on the LPS action on bone healing through bone densitometry, quantitative histological analysis for bone formation rate and immunohistochemical markers in sedentary and exercised animals. Rats ran on the treadmill for four weeks. After training the rats were submitted to a surgical procedure (bone defect in the right tibia) and 24h after the surgery LPS was administered at a dose of 100μg/kg i.p., whereas the control rats received a saline injection (1ml/kg, i.p.). Right tibias were obtained for analysis after 10days during which rats were not submitted to physical training. Physical exercise had a positive effect on bone repair, increasing bone mineral density, bone mineral content, bone formation rate, type I collagen and osteocalcin expression. These parameters were not affected by systemic administration of LPS. Our data indicate that physical exercise has an important osteogenic effect, which is maintained during acute systemic inflammation induced by exposure to a single dose of LPS. PMID:27319388

  3. Biochemical changes on the repair of surgical bone defects grafted with biphasic synthetic micro-granular HA + β-tricalcium phosphate induced by laser and LED phototherapies assessed by Raman spectroscopy

    Science.gov (United States)

    Pinheiro, Antonio Luiz B.; Soares, Luiz Guilherme P.; Marques, Aparecida Maria C.; Silveira, Landulfo

    2016-03-01

    This work aimed the assessment of the biochemical changes during bone mineralization induced by laser and LED irradiation in an animal model of bone repair using a spectral model based on Raman spectroscopy. Six groups were studied: Clot, Laser (λ780 nm, 70 mW), LED (λ850 nm +/- 10 nm, 150 mW), Biomaterial (biphasic synthetic microgranular hydroxyapatite (HA) + β-tricalcium phosphate), Laser + Biomaterial and LED + Biomaterial. When indicated, defects were further irradiated at 48 h interval during 2 wks, 20 J/cm2 per session. At 15th and 30th days, femurs were dissected and spectra of the defects were collected. Raman spectra were submitted to a model to estimate the relative amount of collagen, phosphate HA and carbonate HA, by using spectra of pure collagen, biomaterial and basal bone, respectively. At 15th days, the use of biomaterial associated to phototherapy reduced the collagen formation, whereas the amount of carbonate HA was not different in all groups. The phosphate HA was higher in the groups that received biomaterial grafts. At 30th days, it was observed an increase of collagen for the group Laser + Biomaterial, and a reduction in the carbonate HA for the LED + Biomaterial. The phosphate HA was higher for the groups LED + Biomaterial and Laser + Biomaterial, while decreased for the group Biomaterial. These results indicated that the use of Laser and LED phototherapies improved the repair of bone defects grafted with the biomaterial by increasing the collagen deposition and phosphate HA.

  4. 肿瘤标志物对肺癌分期和骨转移诊断的价值%The diagnosis value of serum tumor marker for bone metastasis and stages of lung cancer

    Institute of Scientific and Technical Information of China (English)

    何泽来; 王火强; 宋玉

    2011-01-01

    目的 探讨肿瘤标志物癌胚抗原(CEA)、细胞角蛋白19的片段(CYFRA21-1)、神经稀醇酶(NSE)、糖类抗原(CA153)血清水平对肺癌分期及肺癌骨转移的辅助诊断价值.方法 检测206例肺癌患者血清4种标志物水平,比较各期肺癌之间、骨转移组和无骨转移组之间的肿瘤标志物表达水平和阳性率的差异.结果 骨转移组4项标志物水平均高于无骨转移组(P均<0.05);肺癌分期越晚,4项标志物阳性率越高;4项联检时灵敏度、准确率等均优于单项检查.结论 肿瘤标志物水平的检测对肺癌骨转移的诊断、肺癌分期(特别是肺癌后期)诊断有辅助价值,联合检查优于单项检查.%Objective To approach the auxiliary diagnosis value of serum tumor markers CEA,CYFRA21-1 ,NSE and CA153 levels for bone metastasis and stages of lung cancer.Methods To collect the serum tumor markers levels of 206 lung cancer patients with whole bone scanning, to analysis the difference of the express level and positive ratio of every stage patients and between bone metastasis group and non-bone metastasis group.Results The four kinds markers levels of bone metastasis group were all higher than non-bone metas tasis group(P all <0.05 ).Four tumor markers positive ratio were increasing with lung cancer stage developing.The sensitivity and accuracy when unite four tumor markers were superior to single marker inspect.Conclusions To detect four kinds tumor markers serum levels for bone metastasis and stages of lung cancer( special later stage of lung cancer) have assist diagnosis value.

  5. Genetic Diversity in ex-situ Conserved Lens culinaris for Botanical Descriptors, Biochemical and Molecular Markers and Identification of Landraces from Indigenous Genetic Resources of Pakistan

    Institute of Scientific and Technical Information of China (English)

    Tayyaba Sultana; Abdul Ghafoor

    2008-01-01

    Lentil, one of the oldest legumes was Investigated for diversity based on botanical descriptors, total seed proteins,isozymes and random amplified polymorphic DNA (RAPD) markers. About one fourth of accessions were heterogeneous for botanical descriptors and a seed protein profile. The germplaem collected from the province of Baluchistan revealed the prevalence of indigenous landraces as high diversity was observed for all of the techniques. Diversity explored through various techniques revealed validity Irrespective of the sample size or geographic pattern, RAPD being the best choice for Investigating both inter- and intra-accession variation In lentil. Although all of the techniques were able to resolve genetic diversity In lentil, isozymes and seed proteins gave low levels of genetic diversity, suggesting that more investigation into isozymes of specific proteins is required. RAPD is the best option for determining inter- and Intra-accession variation, and will be required to extend germplasme and primers to continue the study of botanical descriptors.

  6. Vitamin B-12 supplementation of rural Mexican women changes biochemical B-12 status indicators but does not affect hematology or a bone turnover marker

    Science.gov (United States)

    Based on the high prevalence of low serum vitamin B-12 concentrations and low dietary intake of the vitamin in Latin American studies including research in Mexico, it appears that vitamin B-12 deficiency is common. Whether this is associated with adverse effects on human function is unknown. To eval...

  7. Compromised cortical bone compartment in type 2 diabetes mellitus patients with microvascular disease

    DEFF Research Database (Denmark)

    Shanbhogue, Vikram Vinod; Hansen, Stinus; Nielsen, Morten Frost Munk; Rye Jørgensen, Niklas; Hermann, Pernille; Henriksen, Jan Erik; Brixen, Kim

    2016-01-01

    -resolution peripheral quantitative tomography (HR-pQCT) was used to assess bone structure at the non-dominant distal radius and tibia. Estimated bone strength was calculated using finite element analysis. Biochemical markers of bone turnover were measured in all participants. RESULTS: After adjusting for BMI, MVD......+ patients displayed lower cortical volumetric BMD (P=0.02) and cortical thickness (P=0.02) and higher cortical porosity at the radius (P=0.02) and a trend towards higher cortical porosity at the tibia (P=0.07) compared to controls. HR-pQCT parameters did not differ between MVD- and control subjects...

  8. Evaluation of low-level laser therapy on skeletal muscle ischemia-reperfusion in streptozotocin-induced diabetic rats by assaying biochemical markers and histological changes.

    Science.gov (United States)

    Takhtfooladi, Hamed Ashrafzadeh; Asghari, Ahmad; Amirkamali, Sahar; Hoseinzadeh, Hesam Aldin; Takhtfooladi, Mohammad Ashrafzadeh

    2016-08-01

    The purpose of the present study was to assess the effects of low-level laser therapy (LLLT) on skeletal muscle ischemia-reperfusion (IR) injuries in streptozotocin-induced diabetic rats. Twenty male Wistar rats were randomly assigned into two experimental groups, as follows: the diabetic IR group (G1, n = 10) and the diabetic IR + LLLT group (G2, n = 10). Ischemia was induced in anesthetized rats from the right femoral artery clipping for 2 h, followed by a reperfusion for 24 h. Then, the laser irradiation (K30 handheld probe, AZOR, Technica, Russia, 650 nm, 30 mW, surface area = 1 cm(2), energy density = 1.8 J/cm(2)) was carried out by irradiating the rats over a unique point on the skin over the middle region of the right gastrocnemius muscle belly three times (every 8 h), starting after initiating the reperfusion for 3 min. At the end of the reperfusion period, rats were anaesthetized and blood samples were collected and used for the estimation of pO2, pCO2, pH, HCO3, serum creatine phosphokinase (CPK), and lactate dehydrogenase (LDH). Subsequently, the right gastrocnemius muscle samples were taken for wet/dry weight ratio assessment and histological/biochemical examination. The pO2, pCO2, HCO3, and pH levels were similar for both groups (P > 0.05). The serum LDH and CPK levels were significantly lower (P level in G2 was significantly decreased (P laser parameters and examining response over a longer period of tissue recovery. PMID:27250714

  9. Serum thymidine kinase, a possible marker for monitoring the effect of bone marrow transplant treatment in early recovery phase

    International Nuclear Information System (INIS)

    We measured serum thymidine kinase (TK) activity with a radioenzyme assay system employing [I-125]-iododeoxyuridine as the tracer on serial specimens from five bone marrow transplant (BMT) patients before and after transplantation. The serum level of TK activity in the 4 patients with effective BMT treatment ranged from 3.0 to 16.9 U/L (mean, 7.80 U/L) before transplantation and from 27.3 to 236.1 U/L (mean, 82.95 U/L) after the BMT treatment. Mean serum TK activity increased 13.17-fold (range, 1.68 to 29.14-fold). In contrast, the activity in the patient with ineffective BMT treatment was not significantly different during, before, or after BMT treatment. In addition, serum TK activity in BMT patients was well correlated with the change in the number of leukocytes before and after BMT treatment (r= + 0.709 (p<0.01), y=0.012x + 0.87)

  10. Receptor de estrógenos: variantes genéticas del ESR1 y parámetros bioquímicos de riesgo cardiovascular Estrogen Receptor: Polymorphisms of ESR1 and Biochemical Markers of Cardiovascular Risk

    Directory of Open Access Journals (Sweden)

    MB Rauschemberger

    2012-06-01

    Full Text Available El estudio de la asociación entre marcadores genéticos y signos clínicos y/o bioquímicos de determinadas patologías, se ha propuesto para evaluar la posible utilidad clínica de emplear las determinaciones genéticas como predictores de riesgo. La enfermedad cardiovascular es una de las principales causas de muerte en mujeres posmenopáusicas en el mundo occidental, hecho atribuido al descenso de los niveles de estrógenos circulantes. El objetivo de este trabajo fue investigar la existencia de asociaciones entre los polimorfismos del gen del receptor de estrógenos ESR1 (PvuII y XbaI y los marcadores bioquímicos de riesgo cardiovascular en una población local de mujeres sanas fértiles y posmenopáusicas. Se clasificó a ambas poblaciones en subgrupos según el marcador genético 1(P/p, 2(p/p, 3(P/P, A(X/x, B(x/x, C(X/X, donde P/X indica ausencia de corte y p/x indica presencia de corte para PvuII y XbaI respectivamente. En una muestra de sangre periférica, se determinaron parámetros bioquímicos de perfil lipídico, hemostasia e inflamación y se compararon fértiles vs. posmenopáusicas agrupadas según el genotipo. Las mujeres posmenopáusicas con genotipo A presentaron un aumento significativo en los niveles de colesterol total; C-LDL y triglicéridos respecto a las fértiles. En el subgrupo 1 se detectaron cambios solo en CT y C-LDL. En el haplotipo 1A de posmenopáusicas solo se evidenció aumento en colesterol total. Los parámetros de la hemostasia y de inflamación no mostraron cambios significativos entre fértiles y posmenopáusicas en función del marcador genético presente. Los resultados sugieren que, el genotipo A identifica a la población de mujeres posmenopáusicas con un perfil lipídico más desfavorable respecto a las fértiles del mismo subtipo. Los autores declaran no poseer conflictos de interés.In the last few years, the study of the association between genetic markers and clinical or biochemical signs of

  11. Transcriptional expression levels and biochemical markers of oxidative stress in the earthworm Eisenia andrei after exposure to 2,4-dichlorophenoxyacetic acid (2,4-D).

    Science.gov (United States)

    Hattab, Sabrine; Boughattas, Iteb; Boussetta, Hamadi; Viarengo, Aldo; Banni, Mohamed; Sforzini, Susanna

    2015-12-01

    This study investigated the stress response of earthworms (Eisenia andrei) to exposure to a commonly used herbicide, 2,4 dichloro-phenoxy-acetic acid (2,4-D). We evaluated both stress biomarkers and the transcriptional expression levels and activity of three enzymes involved in oxidative stress responses. Earthworms were exposed to three sublethal concentration of 2,4-D (3.5, 7, and 14 mg kg(-1)) for 7 and 14 days. Exposure to 7 and 14 mg kg(-1) 2,4-D significantly reduced both worm body weight and lysosomal membrane stability (LMS); the latter is a sensitive stress biomarker in coelomocytes. Exposure to 2,4-D caused a pronounced increase in the accumulation of malonedialdehyde (MDA), a marker of oxidative stress, and significantly increased the activity of the antioxidant enzymes catalase (CAT), superoxide dismutase (SOD),and glutathione-S-transferase (GST). Compared to expression in controls, the expression levels of the sod, cat, and gst genes increased in worms exposed to all three 2,4-D doses for 7 days. However, after 14 days of exposure, only the expression of the gst gene remained higher than controls. These data provide new insights into the cytotoxicity of 2,4-D in the earthworm E. andrei and should be carefully considered in view of the biological effects of herbicides in soils organisms. PMID:26210610

  12. The association of bone turnover markers with pro- and anti-inflammatory adipokines in patients with gestational diabetes

    Directory of Open Access Journals (Sweden)

    Beata Telejko

    2015-05-01

    Full Text Available Objective. The aim of the study was to assess differences in circulating osteocalcin (OC and osteoprotegerin (OPG, as well as in their expression in subcutaneous adipose tissue (SAT, visceral adipose tissue (VAT and placental tissue obtained from patients with gestational diabetes mellitus (GDM and normal glucose tolerance (NGT. Materials and method. Serum levels of OC, OPG and soluble nuclear factor-kB ligand (sRANKL were measured in 49 women with GDM and 30 subjects with NGT between weeks 24–32 of gestation, and three months after childbirth. OC and OPG mRNA expression was measured in 23 patients with GDM and 23 women with NGT at term, using quantitative real-time RT-PCR. Results. The patients with GDM had decreased OC mRNA expression in SAT (p=0.015, lower adiponectin mRNA expression in VAT (p=0.039, and a lower circulating adiponectin level (p=0.04. Multiple regression analysis revealed that serum adiponectin was significantly associated with OC mRNA expression in SAT (b=0.49, p=0.03. Three months postpartum, the OPG/sRANKL ratio was markedly higher in the subjects with prior GDM (p=0.03 and correlated positively with HbA1c (R=0.33; p=0.04, fasting insulin (R=0.35; p=0.03 and HOMA-IR (R=0.34; p=0.04. Conclusions. In the patients with GDM decreased OC mRNA expression in SAT might be associated with a reduced stimulatory effect on adiponectin expression in adipose tissue. On the other hand, higher OPG/sRANKL ratio suggests a better protection against bone loss in the subjects with prior GDM.

  13. Autologous Bone Marrow-Derived Mesenchymal Stem Cells Modulate Molecular Markers of Inflammation in Dogs with Cruciate Ligament Rupture.

    Science.gov (United States)

    Muir, Peter; Hans, Eric C; Racette, Molly; Volstad, Nicola; Sample, Susannah J; Heaton, Caitlin; Holzman, Gerianne; Schaefer, Susan L; Bloom, Debra D; Bleedorn, Jason A; Hao, Zhengling; Amene, Ermias; Suresh, M; Hematti, Peiman

    2016-01-01

    Mid-substance rupture of the canine cranial cruciate ligament rupture (CR) and associated stifle osteoarthritis (OA) is an important veterinary health problem. CR causes stifle joint instability and contralateral CR often develops. The dog is an important model for human anterior cruciate ligament (ACL) rupture, where rupture of graft repair or the contralateral ACL is also common. This suggests that both genetic and environmental factors may increase ligament rupture risk. We investigated use of bone marrow-derived mesenchymal stem cells (BM-MSCs) to reduce systemic and stifle joint inflammatory responses in dogs with CR. Twelve dogs with unilateral CR and contralateral stable partial CR were enrolled prospectively. BM-MSCs were collected during surgical treatment of the unstable CR stifle and culture-expanded. BM-MSCs were subsequently injected at a dose of 2x106 BM-MSCs/kg intravenously and 5x106 BM-MSCs by intra-articular injection of the partial CR stifle. Blood (entry, 4 and 8 weeks) and stifle synovial fluid (entry and 8 weeks) were obtained after BM-MSC injection. No adverse events after BM-MSC treatment were detected. Circulating CD8+ T lymphocytes were lower after BM-MSC injection. Serum C-reactive protein (CRP) was decreased at 4 weeks and serum CXCL8 was increased at 8 weeks. Synovial CRP in the complete CR stifle was decreased at 8 weeks. Synovial IFNγ was also lower in both stifles after BM-MSC injection. Synovial/serum CRP ratio at diagnosis in the partial CR stifle was significantly correlated with development of a second CR. Systemic and intra-articular injection of autologous BM-MSCs in dogs with partial CR suppresses systemic and stifle joint inflammation, including CRP concentrations. Intra-articular injection of autologous BM-MSCs had profound effects on the correlation and conditional dependencies of cytokines using causal networks. Such treatment effects could ameliorate risk of a second CR by modifying the stifle joint inflammatory response

  14. Efecto de telmisartan sobre marcadores del remodelado óseo en pacientes hipertensos Telmisartan effect's on remodelling bone markers in hypertensive patients

    Directory of Open Access Journals (Sweden)

    J. L. Pérez-Castrillón

    2012-02-01

    remodelado aunque se observó un descenso de la glucosa en pacientes con niveles de vitamina D por encima de 20 ng/ml (135 ± 53 mg/dl vs 119 ± 39 mg/dl, p = 0,01. Los pacientes tratados con IECAS disminuyen los valores de tensión arterial sistólica pero la diastólica no muestra cambios. Conclusiones: Telmisartan tiene un efecto neutro a nivel de los marcadores del remodelado óseo.Introduction: The telmisartan is an angiotensin II receptor blocker (ARB with a few own characteristics that it allows us to obtain a few additional benefits. It displays the ability to act as a partial agonist of PPARgamma. On the other hand, PPAR gamma intervenes in the control of bone remodelling though with not concordant results. The objective of this study to value the effect of telmisartan on bone markers in hypertensive patients. Subjects: A sample of 31 hypertensive patients with hypertension were included. The dose of telmisartan was of 80 mg/24 h and the period of follow-up was 12 weeks. The control group included 32 hypertensive patients treated before with IECA (enalapril-20 mg/24 h - or quinapril - 40 mg/24 hours. The following parameters were determined P1NP, β-CTX, 25OHD and PTH , osteocalcin, insulin and adiponectin. Results: The patients treated with Telmisartan shown a significantly decrease in systolic blood pressure (156 ± 19 mmHg vs 133 ± 15 mmHg, p = 0.001 and diastolic blood pressure (92 ± 9 mmHgvs 82 ± 6 mmHg, p = 0.01 . Changes were not observed in other parameter, PTHi (48 ± 22 pg/ml vs 45 ± 22 pg/ml, p > 0.05 and 25-vitamin D (21 ± 10 ng/ml vs 25 ± 8 ng/ml, p > 0.05, CTX (0.195 ± 0.12 ng/ml vs 0.221 ± 0.13 ng/ml, p > 0.05, PINP (39 ± 20 ng/ml vs 40 ± 19 ng/ml, p > 0.05, osteocalcin (11 ± 9 ng/ml vs 11 ± 5 ng/ml, p > 0.05, glucose, adiponectin, insulin and HOMA. When the patients divided in two groups depending on the levels of vitamin D (insufficient and not insufficient, with a cut of 20 ng/ml, there was changes on bone markers but a decrease of the

  15. Mechanistic, mathematical model to predict the dynamics of tissue genesis in bone defects via mechanical feedback and mediation of biochemical factors.

    Directory of Open Access Journals (Sweden)

    Shannon R Moore

    2014-06-01

    Full Text Available The link between mechanics and biology in the generation and the adaptation of bone has been well studied in context of skeletal development and fracture healing. Yet, the prediction of tissue genesis within - and the spatiotemporal healing of - postnatal defects, necessitates a quantitative evaluation of mechano-biological interactions using experimental and clinical parameters. To address this current gap in knowledge, this study aims to develop a mechanistic mathematical model of tissue genesis using bone morphogenetic protein (BMP to represent of a class of factors that may coordinate bone healing. Specifically, we developed a mechanistic, mathematical model to predict the dynamics of tissue genesis by periosteal progenitor cells within a long bone defect surrounded by periosteum and stabilized via an intramedullary nail. The emergent material properties and mechanical environment associated with nascent tissue genesis influence the strain stimulus sensed by progenitor cells within the periosteum. Using a mechanical finite element model, periosteal surface strains are predicted as a function of emergent, nascent tissue properties. Strains are then input to a mechanistic mathematical model, where mechanical regulation of BMP-2 production mediates rates of cellular proliferation, differentiation and tissue production, to predict healing outcomes. A parametric approach enables the spatial and temporal prediction of endochondral tissue regeneration, assessed as areas of cartilage and mineralized bone, as functions of radial distance from the periosteum and time. Comparing model results to histological outcomes from two previous studies of periosteum-mediated bone regeneration in a common ovine model, it was shown that mechanistic models incorporating mechanical feedback successfully predict patterns (spatial and trends (temporal of bone tissue regeneration. The novel model framework presented here integrates a mechanistic feedback system based

  16. Preventive Effects of Flaxseed and Sesame Oil on Bone Loss in Ovariectomized Rats

    Directory of Open Access Journals (Sweden)

    S. Boulbaroud

    2008-01-01

    Full Text Available A study was designed to examine the effects of dietary flaxseed oil (FO and sesame oil (SO which are rich successively in n-3 and (n-9 and n-6 on biochemical parameters and histological status of bone. Sixty-four 90-day-old female wistar rats were randomly assigned to 6 groups: sham-operated rat (sham+ control diets, ovariectomized rat (OVX+ control diets, OVX+ 7% FO, OVX+ 7% SO, OVX+ 10% FO, OVX+ 10% SO. After 4 weeks of treatments, rats were euthanized; blood and tissues were collected for analyses. Markers of bone formation which is alkaline phosphatase activity and markers of bone resorption which is tartrate resistant acid phosphatase activity were measured. Present results showed that OVX increased significantly ALP and TRAP activity and the examination of bone tissue showed disruptive and lytic bone trabeculae. Animals fed 10% FO and 10% SO of fat reduced these parameters and improved bone microarchitecture. Whereas, there was no improvement in biochemical and histological states in OVX rats that received 7% of PUFAs successively provided from FO and SO diets. In conclusion, our results are encouraging because they suggest that PUFAs intake may help to prevent osteoporosis associated with estrogens deficiency. However, further studies are needed to determine the mechanism by which a diet rich in n-3 or lignans modulate bone tissue.

  17. Hyperhomocysteinemia decreases bone blood flow

    Directory of Open Access Journals (Sweden)

    Neetu Tyagi

    2011-01-01

    Full Text Available Neetu Tyagi*, Thomas P Vacek*, John T Fleming, Jonathan C Vacek, Suresh C TyagiDepartment of Physiology and Biophysics, School of Medicine, University of Louisville, Louisville, KY, USA *These authors have equal authorshipAbstract: Elevated plasma levels of homocysteine (Hcy, known as hyperhomocysteinemia (HHcy, are associated with osteoporosis. A decrease in bone blood flow is a potential cause of compromised bone mechanical properties. Therefore, we hypothesized that HHcy decreases bone blood flow and biomechanical properties. To test this hypothesis, male Sprague–Dawley rats were treated with Hcy (0.67 g/L in drinking water for 8 weeks. Age-matched rats served as controls. At the end of the treatment period, the rats were anesthetized. Blood samples were collected from experimental or control rats. Biochemical turnover markers (body weight, Hcy, vitamin B12, and folate were measured. Systolic blood pressure was measured from the right carotid artery. Tibia blood flow was measured by laser Doppler flow probe. The results indicated that Hcy levels were significantly higher in the Hcy-treated group than in control rats, whereas vitamin B12 levels were lower in the Hcy-treated group compared with control rats. There was no significant difference in folate concentration and blood pressure in Hcy-treated versus control rats. The tibial blood flow index of the control group was significantly higher (0.78 ± 0.09 flow unit compared with the Hcy-treated group (0.51 ± 0.09. The tibial mass was 1.1 ± 0.1 g in the control group and 0.9 ± 0.1 in the Hcy-treated group. The tibia bone density was unchanged in Hcy-treated rats. These results suggest that Hcy causes a reduction in bone blood flow, which contributes to compromised bone biomechanical properties.Keywords: homocysteine, tibia, bone density

  18. Fortification of yogurts with vitamin D and calcium enhances the inhibition of serum parathyroid hormone and bone resorption markers: A double blind randomized controlled trial in women over 60 living in a community dwelling home

    OpenAIRE

    Bonjour, Jean-Philippe; Benoit, V.; Atkin, S; Walrand, S.

    2015-01-01

    Objective To evaluate whether fortification of yogurts with vitamin D and calcium exerts an additional lowering effect on serum parathyroid hormone (PTH) and bone resorption markers (BRM) as compared to iso-caloric and iso-protein dairy products in aged white women at risk of fragility fractures. Design A randomized double-blind controlled trial. Setting A community dwelling home. Participants Forty-eight women over 60 years (mean age 73.4). Intervention Consumption during 84 days of two 125 ...

  19. PCT结合其他生化指标在ICU血流感染患者诊断中的应用%Application of Procalcitonin in Combination with Other Biochemical Markers in the Diagnosis of Bloodstream Infections in ICU Patients

    Institute of Scientific and Technical Information of China (English)

    陈其琪; 是俊凤; 吕婕; 刘瑛; 潘曙明; 刘鸣; 于洋

    2012-01-01

    养结果作为诊断菌血症的标准.%  Objective To examine the sensitivity and specificity of procalcitonin (PCT) in combination with other biochemical markers such as C-reactive protein (CRP), WBC, as well as levels of lipopolysaccharide (LPS) and lactate in the diagnosis of bacterial septicemia in ICU patients and evaluate the clinical utility of such a combination in identifying bacterial septicemia. Methods Venous blood samples were taken from patients at fasting state immediately after they were admitted and before administration of antibiotics for PCT, CRP and routine hematological tests. PCT was determined by immunochemiluminescence assay. CRP was analyzed by nephelometric assay. Routine hematological tests were performed with VCS (volume, conductivity, and scatter) technique. The serum LPS level was evaluated by kinetic turbidimetric assay, and serum lactate level was determined by dry chemical method. Positive result was defined as serum PCT≥0.05ng/mL;CRP≥10 mg/L;WBC≥6×109/L;lactate level≥2.2mmol/L;LPS≥5EU/mL. The data were processed and analyzed with SPSS 18.0 software. Analysis of variance (ANOVA) was used to compare the means between groups. The sensitivity and specificity were analyzed by using Chi-square test. P<0.05 was defined as statistical significance. Results The levels of PCT, CRP, WBC, lactate and LPS in the patients with positive blood culture were significantly higher than the corresponding parameters in those with negative blood test (P<0.05). In the patients with positive blood culture (n=69), the positive result of PCT, CRP, WBC, lactate, and LPS was identified in 51, 68, 57, 30 and 13 patients, respectively. The sensitivity was 73.19%, 98.55%, 82.60%, 56.52%, and 18.84%, respectively. In the patients with negative blood culture (n=359), PCT, CRP, WBC, lactate, and LPS was negative in 301, 208, 293, 281, and 330 patients, respectively. The specificity was 83.84%, 57.94%, 81.62%, 78.27%, and 91.92%, respectively

  20. Short communication: Effect of commercial or depurinized milk diet on plasma advanced oxidation protein products, cardiovascular markers, and bone marrow CD34+ stem cell potential in rat experimental hyperuricemia.

    Science.gov (United States)

    Kocic, Gordana; Sokolovic, Dusan; Jevtovic, Tatjana; Cvetkovic, Tatjana; Veljkovic, Andrej; Kocic, Hristina; Stojanovic, Svetlana; Jovanovic, Aneta; Jovanovic, Jelena; Zivkovic, Petar

    2014-11-01

    Cardiovascular repair and myocardial contractility may be improved by migration of bone marrow stem cells (BMSC) and their delivery to the site of injury, a process known as BMSC homing. The aim of our study was to examine the dietary effect of a newly patented depurinized milk (DP) that is almost free of uric acid and purine and pyrimidine compounds compared with a standard commercial 1.5% fat UHT milk diet or allopurinol therapy in rat experimental hyperuricemia. Bone marrow stem cell potential (BMCD34(+), CD34-postive bone marrow cells), plasma oxidative stress parameters [advanced oxidation protein products, AOPP) and thiobarbituric acid reactive substances (TBARS)], myocardial damage markers [creatine phosphokinase (CPK), aspartate aminotransferase (AST), and lactate dehydrogenase (LDH)], plasma cholesterol, and high-density lipoprotein cholesterol were investigated. The DP milk diet significantly increased the number of BMCD34(+) stem cells compared with commercial UHT milk. Allopurinol given alone also increased the number of BMCD34(+). Hyperuricemia caused a significant increase in all plasma enzyme markers for myocardial damage (CPK, LDH, and AST). A cardioprotective effect was achieved with allopurinol but almost equally with DP milk and more than with commercial milk. Regarding plasma AOPP, TBARS, and cholesterol levels, the most effective treatment was DP milk. In conclusion, the protective role of a milk diet on cardiovascular function may be enhanced through the new depurinized milk diet, which may improve cardiovascular system function via increased bone marrow stem cell regenerative potential, decreased plasma oxidative stress parameters, and decreased levels of myocardial damage markers and cholesterol. New dairy technology strategies focused on eliminating harmful milk compounds should be completely nontoxic. Novel milk products should be tested for their ability to improve tissue repair and function. PMID:25218755

  1. Bone mineral density and bone scintigraphy in adult Saudi female patients with Osteomalacia

    International Nuclear Information System (INIS)

    This prospective study was conducted to demonstrate the role of bone mineral density (BMD) and bone scan in the management of adult Saudi female patients with established diagnosis of osteomalacia. Bone scan using Tc99m methylene diphosphate (MDP) and BMD of the lumbar spine and femoral neck using dual x-ray absorptiometry (DXA) were performed at the time of diagnosis 6 months and one year after therapy in 96 Saudi female patients attending the metabolic bone disease clinic at King Khalid University Hospital, King Saud University, Riyadh, Kingdom of Saudi Arabia, between January 1997 through to June 1999, aged between 20 and 73 years (mean 42 years). Alkaline phosphates, calcium and inorganic phosphorus were measured for all patients before and after treatment. 25 Hydroxy vitamin D was only measured with the first BMD measurements. A bone profile showed typical biochemical abnormalities of osteomalacia.The bone scan showed features of superscan in all patients and pseudofractures in 43 patients. BMD measures were compared with that of normal Saudi subjects matched for age and sex. The BMD was low at diagnosis and showed significant improvement after therapy. The improvement of bone density in response to therapy was more evident in lumbar spine than in femoral neck bone.Our results showed that BMD in adult Saudi female patients with osteomalacia was markedly affected probably due to specific constitutional and environmental factors ( inadeqate exercise, lack of sun exposure and lack of intake of milk and dairy products). In addition, lumbar BMD and serum calcium appeared to be better markers to monitor therapy.Bone scan helped in demonstrating disease activity, the presence of pseudofractures. (author)

  2. Vitamin K1 (phylloquinone) and K2 (menaquinone-4) supplementation improves bone formation in a high-fat diet-induced obese mice

    OpenAIRE

    Kim, Misung; Na, Woori; Sohn, Cheongmin

    2013-01-01

    Several reports suggest that obesity is a risk factor for osteoporosis. Vitamin K plays an important role in improving bone metabolism. This study examined the effects of vitamin K1 and vitamin K2 supplementation on the biochemical markers of bone turnover and morphological microstructure of the bones by using an obese mouse model. Four-week-old C57BL/6J male mice were fed a 10% fat normal diet group or a 45% kcal high-fat diet group, with or without 200 mg/1000 g vitamin K1 (Normal diet + K1...

  3. Effects of denosumab on bone histomorphometry: the FREEDOM and STAND studies.

    Science.gov (United States)

    Reid, Ian R; Miller, Paul D; Brown, Jacques P; Kendler, David L; Fahrleitner-Pammer, Astrid; Valter, Ivo; Maasalu, Katre; Bolognese, Michael A; Woodson, Grattan; Bone, Henry; Ding, Beiying; Wagman, Rachel B; San Martin, Javier; Ominsky, Michael S; Dempster, David W

    2010-10-01

    Denosumab, a human monoclonal antibody against RANKL, reversibly inhibits osteoclast-mediated bone resorption and has been developed for use in osteoporosis. Its effects on bone histomorphometry have not been described previously. Iliac crest bone biopsies were collected at 24 and/or 36 months from osteoporotic postmenopausal women in the FREEDOM study (45 women receiving placebo and 47 denosumab) and at 12 months from postmenopausal women previously treated with alendronate in the STAND study (21 continuing alendronate and 15 changed to denosumab at trial entry). Qualitative histologic evaluation of biopsies was unremarkable. In the FREEDOM study, median eroded surface was reduced by more than 80% and osteoclasts were absent from more than 50% of biopsies in the denosumab group. Double labeling in trabecular bone was observed in 94% of placebo bones and in 19% of those treated with denosumab. Median bone-formation rate was reduced by 97%. Among denosumab-treated subjects, those with double labels and those with absent labels had similar levels of biochemical markers of bone turnover. In the STAND trial, indices of bone turnover tended to be lower in the denosumab group than in the alendronate group. Double labeling in trabecular bone was seen in 20% of the denosumab biopsies and in 90% of the alendronate samples. Denosumab markedly reduces bone turnover and also reduces fracture numbers. Longer follow-up is necessary to determine how long such low turnover is safe. PMID:20533525

  4. Serum percentage undercarboxylated osteocalcin, a sensitive measure of vitamin K status, and its relationship to bone health indices in Danish girls

    DEFF Research Database (Denmark)

    O'Connor, Eibhlis; Mølgaard, Christian; Michaelsen, Kim F.; Jakobsen, Jette; Lamberg-Allardt, Christel J. E.; Cashman, Kevin D.

    2007-01-01

    Recent cross-sectional data suggest that better vitamin K status in young girls (aged 3-16 years) is associated with decreased bone turnover, even though it is not associated with bone mineral content (BMC). The objective of the present study was to investigate the relationship between serum...... percentage of undercarboxylated osteocalcin (%ucOC), as an index of vitamin K status, and BMC and biochemical indices of bone turnover in peri-pubertal Danish girls. This peri-pubertal stage is a dynamic period of bone development, and as such, may represent an important window of opportunity for vitamin K...... status to modulate childhood bone health. Serum %ucOC and serum 25-hydroxyvitamin D (25 (OH) D) were measured at baseline in a study of 223 healthy girls aged 11-12 years. Urinary pyridinium crosslinks of collagen and serum total osteocalcin as markers of bone resorption and formation, respectively, as...

  5. SERUM YKL-40 IS ASSOCIATED WITH BONE DISEASE IN MULTIPLE MYELOMA

    DEFF Research Database (Denmark)

    Mylin, Anne Kjærsgaard; Abildgaard, Niels; Johansen, Julia S.;

    2007-01-01

    radiography and scored semiquantitative as a total X-ray score. Ongoing bone metabolism was assessed using biochemical markers of bone formation (S-PICP, S-PINP, S-Bone ALP, S-OC) and bone resorption (S-CTX-MMP, U-NTX-1, U-PYD, UDPD). The first 34 patients included were treated with conventional chemotherapy...... healthy adults. Patients with elevated S-YKL-40 had a higher total X-ray score (p=0.005) and higher levels of S-CTX-MMP (p=0.003), U-PYD (p=0.004) and U-DPD (p=0.002), while U-NTX-1 and the markers of bone formation did not differ from the levels seen in patients with normal S-YKL-40. During follow-up 21...... angiogenesis, and in cancer cell survival and invasion. The aim of this study was to investigate the association between serum YKL-40 (S-YKL-40) and the degree of bone disease in MM. Materials and Methods. S-YKL-40 was measured using an ELISA in 54 MM patients at diagnosis. Bone morbidity was assessed by...

  6. Alendronate prevents postmenopausal bone loss in women without osteoporosis. A double-blind, randomized, controlled trial. Alendronate Osteoporosis Prevention Study Group

    DEFF Research Database (Denmark)

    McClung, M; Clemmesen, B; Daifotis, A;

    1998-01-01

    to one of five regimens: oral placebo; oral alendronate, 1, 5, or 10 mg/d; or oral alendronate, 20 mg/d for 2 years followed by placebo during the third year (20/0 mg/d). MEASUREMENTS: Bone mineral density was measured by dual-energy x-ray absorptiometry. Bone turnover and bone quality were assessed...... with biochemical markers and bone histomorphometry. RESULTS: Alendronate at 5, 10, and 20/0 mg/d increased bone mineral density from baseline at the lumbar spine, femoral neck, and trochanter by 1% to 4% and in the total body by 0.3% to 1.0%; placebo led to losses of 2% to 4% at these sites....... Alendronate, 1 mg/d, attenuated losses relative to those seen with placebo. Alendronate decreased markers of bone resorption to a new steady state by 3 months and decreased markers of bone formation by 6 to 12 months. Bone quality remained normal. At all dosages studied, alendronate had a safety and...

  7. Measurements of natural radionuclides in human teeth and animal bones as markers of radiation exposure from soil in the Northern Malaysian Peninsula

    International Nuclear Information System (INIS)

    This study aimed to estimate the radioactive accumulation of the radionuclides 40K, 137Cs, 210Pb, 226Ra, 228Ra, and 228Th in extracted human teeth, animal bones, and soil. The natural radionuclides were measured by high-purity germanium spectroscopy in extracted human teeth and animal bones from people and animals living in different states in the Northern Malaysian Peninsula. The average 40K, 137Cs, 210Pb, 226Ra, 228Ra, and 228Th concentrations in teeth were found to be 12.31±7.27 Bq g−1, 0.48±0.21 Bq g−1, 0.56±0.21 Bq g−1, 0.55±0.23 Bq g−1, 1.82±1.28 Bq g−1, and 0.50±0.14 Bq g−1, respectively. The corresponding concentrations in bones were found to be 3.79±0.81 Bq g−1, 0.07±0.02 Bq g−1, 0.08±0.02 Bq g−1, 0.16±0.04 Bq g−1, 0.51±1.08 Bq g−1, and 0.06±0.02 Bq g−1, respectively. The corresponding radionuclide concentrations in teeth from smokers were higher than those in non-smokers, and the corresponding radionuclide concentrations were higher in female teeth than in male teeth. The corresponding radionuclide concentrations were higher in teeth than in bones. A positive correlation was found between radionuclides in both teeth and bone samples. - Highlights: • Radionuclides in teeth from smokers higher than non-smokers, except 40K. • Radionuclides slightly higher in female teeth than male teeth. • Positive correlation found between radionuclides in both teeth and bone

  8. Clinical diagnostic indicators of renal and bone damage in rats intramuscularly injected with depleted uranium

    International Nuclear Information System (INIS)

    The toxic effects and changes in biochemical markers related to kidney and bone in depleted uranium (DU)-injected rats were examined in order to clarify the relation between clinical biochemical markers and the degree of damage in these organs. Male Wistar rats received a single injection in the femoral muscles of 0.2, 1.0 or 2.0 mg kg-1 of DU which was dissolved in nitric acid solution adjusted to pH 3.2, for comparison with the group injected with nitric acid solution, and the control group. Urine and faeces were collected periodically over a 24 h period. Thereafter, the rats were killed at 28 d after DU injection. The body weights of the DU-injected groups decreased dose-dependently for the first 3-7 d, and then began to increase. The DU concentrations in the urine and faeces decreased rapidly within 3-7 d after DU injection. Urinary N-acetyl-β-D-glucosaminidase (NAG)/ creatinine peaked at the third day after DU injection, with a high correlation to the injected DU doses. There were high correlations among the injected DU doses, DU concentrations in the kidney and urinary NAG/ creatinine values that were obtained at 28 d, respectively. The blood urea nitrogen (BUN) and creatinine in the serum also showed a high correlation with the DU-injected doses. The results indicated that urinary NAG/creatinine, BUN and creatinine in serum were useful indicators to diagnose the renal damage by DU, as well as to estimate the DU intake and concentration in the kidney when the intake is >2 mg kg-1 DU. The total bone mineral density of the proximal metaphysis of the tibia decreased in the 2 mg kg-1 DU group. In addition, alterations of the trabecular bone structure by inhibiting bone formation and promoting bone resorption were observed by bone histo-morphometry. The bone biochemical markers osteo-calcin, tartrate-resistance acid phosphatase, pyridinoline and rat-parathyroid hormone increased in all the DU injected groups, indicating that these markers were useful as sensitive

  9. 3H-tetracycline as a proxy for 41Ca for measuring dietary perturbations of bone resorption

    Science.gov (United States)

    Weaver, Connie; Cheong, Jennifer; Jackson, George; Elmore, David; McCabe, George; Martin, Berdine

    2007-06-01

    Our group is interested in evaluating early effects of dietary interventions on bone loss. Postmenopausal women lose bone following reduction in estrogen which leads to increased risk of fracture. Traditional means of monitoring bone loss and effectiveness of treatments include changes in bone density, which takes 6 months to years to observe effects, and changes in biochemical markers of bone turnover, which are highly variable and lack specificity. Prelabeling bone with 41Ca and measuring urinary 41Ca excretion with accelerator mass spectrometry provides a sensitive, specific, and rapid approach to evaluating effectiveness of treatment. To better understand 41Ca technology as a tool for measuring effective treatments on reducing bone resorption, we perturbed bone resorption by manipulating dietary calcium in rats. We used 3H-tetracycline (3H-TC) as a proxy for 41Ca and found that a single dose is feasible to study bone resorption. Suppression of bone resorption, as measured by urinary 3H-TC, by dietary calcium was observed in rats stabilized after ovariectomy, but not in recently ovariectomized rats.

  10. 3H-tetracycline as a proxy for 41Ca for measuring dietary perturbations of bone resorption

    International Nuclear Information System (INIS)

    Our group is interested in evaluating early effects of dietary interventions on bone loss. Postmenopausal women lose bone following reduction in estrogen which leads to increased risk of fracture. Traditional means of monitoring bone loss and effectiveness of treatments include changes in bone density, which takes 6 months to years to observe effects, and changes in biochemical markers of bone turnover, which are highly variable and lack specificity. Prelabeling bone with 41Ca and measuring urinary 41Ca excretion with accelerator mass spectrometry provides a sensitive, specific, and rapid approach to evaluating effectiveness of treatment. To better understand 41Ca technology as a tool for measuring effective treatments on reducing bone resorption, we perturbed bone resorption by manipulating dietary calcium in rats. We used 3H-tetracycline (3H-TC) as a proxy for 41Ca and found that a single dose is feasible to study bone resorption. Suppression of bone resorption, as measured by urinary 3H-TC, by dietary calcium was observed in rats stabilized after ovariectomy, but not in recently ovariectomized rats

  11. The effect of short-term low-energy ultraviolet B irradiation on bone mineral density and bone turnover markers in postmenopausal women with osteoporosis: A randomized single-blinded controlled clinical trial

    OpenAIRE

    Micić Ivan; Jeon In-Ho; Park So-Hyun; Hwa Seo-Sung; Chun Jae-Myeung; Stojiljković Predrag

    2013-01-01

    Introduction. The importance of vitamin D on bone health and osteoporosis was studied by many researchers. The main role of the Vitamin D is to absorb calcium and phosphate and increase bone mineralization. Older people are at an increased risk of the inadequate vitamin D production in the skin because of lower sun exposure and reduced ability of the skin to synthesize vitamin D. Objective. The aim of this clinical trial was to evaluate the efficacy and tolerability of short-term (2 wee...

  12. The influence of bone surface availability in bone remodelling - A mathematical model including coupled geometrical and biomechanical regulations of bone cells

    OpenAIRE

    Pivonka, Peter; Buenzli, Pascal R.; Scheiner, Stefan; Hellmich, Christian; Dunstan, Colin R.

    2012-01-01

    Bone is a biomaterial undergoing continuous renewal. The renewal process is known as bone remodelling and is operated by bone-resorbing cells (osteoclasts) and bone-forming cells (osteoblasts). Both biochemical and biomechanical regulatory mechanisms have been identified in the interaction between osteoclasts and osteoblasts. Here we focus on an additional and poorly understood potential regulatory mechanism of bone cells, that involves the morphology of the microstructure of bone. Bone cells...

  13. Bone tumor

    Science.gov (United States)

    Tumor - bone; Bone cancer; Primary bone tumor; Secondary bone tumor ... The cause of bone tumors is unknown. They often occur in areas of the bone that grow rapidly. Possible causes include: Genetic defects ...

  14. Bone Grafts

    Science.gov (United States)

    A bone graft transplants bone tissue. Surgeons use bone grafts to repair and rebuild diseased bones in your hips, knees, spine, and sometimes other bones and joints. Grafts can also repair bone loss caused by some ...

  15. Prognostic markers of canine pyometra

    OpenAIRE

    M.C. Sant'Anna; L.G.P. Giordano; K.K.M.C. Flaiban; E.E. Muller; M.I.M. Martins

    2014-01-01

    The pyometra is a disease that affects middle age and elderly female dogs during diestrus. Hormonal, microbiological, biochemical and hematological aspects are well described. However, few studies have evaluated the role of each in the prognosis of canine pyometra. The aim of this study was to identify markers associated with clinical worsening of dogs with pyometra. We prospectively evaluated 80 dogs with pyometra tre...

  16. Tumor Markers

    Science.gov (United States)

    ... guidelines on a variety of topics, including tumor markers for breast cancer, colorectal cancer, lung cancer, and others. The ... of recurrence 70-Gene signature (Mammaprint®) Cancer type: Breast ... Can tumor markers be used in cancer screening? Because tumor markers ...

  17. Use of the plasma CTX for assessing the bone activity of the mandible among osteopenic and osteoporotic patients

    Directory of Open Access Journals (Sweden)

    Glacio Avolio

    2010-06-01

    Full Text Available The aim of this study was to determine whether the plasma CTX bone remodeling marker is useful for indicating the bone metabolic activity level of the mandible. Thirty-six patients were selected; all were postmenopausal and aged 50 years or over. In accordance with the WHO criteria for osteoporosis, a control group was set up (n = 10 in which the T-score was greater than -1 and a diseased group with T-score less than -1. Using MDP-99mTc samples, the radioisotope uptake in the femoral neck (R2 and mandibular body (R1 was analyzed. A third examination was performed using the plasma CTX biochemical bone-modeling marker. The inferential results for the diseased group showed that Ln(R1 presented a statistically significant linear relationship with Ln(CTx (p = 0.067 and with the T-score (p = 0.018. The plasma CTX bone remodeling marker is useful for monitoring the bone metabolic activity of the mandible.

  18. Bone Biopsy

    Science.gov (United States)

    ... Physician Resources Professions Site Index A-Z Bone Biopsy Bone biopsy uses a needle and imaging guidance ... limitations of Bone Biopsy? What is a Bone Biopsy? A bone biopsy is an image-guided procedure ...

  19. Molecular markers of tumor invasiveness in ameloblastoma: An update

    OpenAIRE

    Zhong, Yi; Guo, Wei; Wang, Li; CHEN, XINMING

    2011-01-01

    The aim of the present article was to review the current new knowledge on the molecular markers of tumor invasion in ameloblastoma. In this review, tumor molecular markers were identified and allocated to the following six groups according to their functions: (I) Markers involved in extracellular matrix degradation, (II) Molecular markers involved in cell adhesion lost, (III) Molecular markers involved in bone remodeling, (IV) Cytokines involved in angiogenesis, (V) Molecular markers related ...

  20. Longitudinal study on osteoarthritis and bone metabolism

    Directory of Open Access Journals (Sweden)

    L. Postiglione

    2011-09-01

    Full Text Available Objective: The relationship between Osteoarthritis (OA and Osteoporosis (OP is not well defined due to lacking in longitudinal data, mainly regarding correlations between biochemical factors and OA incidence. Aim of this paper was to investigate the predictive value for OA incidence of bone mass variations and of selected biochemical markers in healthy women participating in a population-based longitudinal study carried out in Naples (Italy. Subjects and Methods: High completion rate (85.2% and statistically adequate sample size were obtained: 139 women (45 to 79 years of age were examined and follow up visit was performed after two years (24±2 months, following the same protocol. Patients underwent medical examination, questionnaire, anthropometric measurements, blood sampling and urine collection. Bone mineral density (BMD measurement was performed by dual energy X-ray absorptiometry (DEXA at the lumbar spine (L1-L4 and femoral neck. Radiographs of dorsal and lumbar spine in lateral view were performed at basal and at 24 months visits; a team of three experts scored radiographs using Kellegren and Lawrence grading. Results: The score was calculated for two individual radiographic features (narrowing of the joint space, presence of osteophytes and as a global score. Results show a relevant percentage, 23% up, of subjects presenting both OA and OP. In the cross-sectional study the presence of osteophytosis correlates with anthropometric variables and PTH levels. In the longitudinal study results show a correlation between serum vitamin D and delta score for osteophytosis (β=0.02 p<0.05. Conclusions: Data obtained outline the importance of further studies on the pathogenetic link between OA and bone metabolism.

  1. Effects of resistance training and protein supplementation on bone turnover in young adult women

    Directory of Open Access Journals (Sweden)

    Sinning Wayne E

    2005-08-01

    enhance bone formation or inhibit bone resorption in young adult women, as assessed by biochemical markers of bone metabolism. (2 Subsequent maintenance of a high protein intake for 10 days in these regularly-training, calcium-replete women also showed no effects on bone metabolism.

  2. Inca bones at asterion

    OpenAIRE

    Prashant E Natekar; Suhit E Natekar; Fatima M De Souza

    2014-01-01

    Background: Surgical approach towards asterion has to be done with caution as many surgeons are unfamiliar with the anatomical variations. The asterion corresponds to the site of the posterolateral (mastoid) fontanelle of the neonatal skull which closes at the end of the first year. Inca bones provide information as markers for various diseases, and can mislead in the diagnosis of fractures. Observation and Results: 150 dry skull bones from the Department of Anatomy at Goa Medical College, In...

  3. Predictive biochemical assays for late radiation effects

    Energy Technology Data Exchange (ETDEWEB)

    Rubin, P.; Finkelstein, J.N.; Siemann, D.W.; Shapiro, D.L.; Van Houtte, P.; Penney, D.P.

    1986-04-01

    Surfactant precursors or other products of Type II pneumocytes have the potential to be the first biochemical marker for late radiation effects. This is particularly clinically important in the combined modality era because of the frequent occurrence of pneumonitis and pulmonary fibrosis secondary to radiation or chemotherapy. Accordingly, correlative studies have been pursued with the Type II pneumocyte as a beginning point to understand the complex pathophysiology of radiation pneumonitis and fibrosis. From our ultrastructural and biochemical studies, it is evident that Type II pneumocytes are an early target of radiation and the release of surfactant into the alveolus shortly after exposure persists for days and weeks. Through the use of lavaging techniques, alveolar surfactant has been elevated after pulmonary irradiation. In three murine strains and in the rabbit, there is a strong correlation with surfactant release at 7 and/or 28 days in vivo with later lethality in months. In vitro studies using cultures of type II pneumocytes also demonstrate dose response and tolerance factors that are comparable to the in vivo small and large animal diagnostic models. New markers are being developed to serve as a predictive index for later lethal pneumonopathies. With the development of these techniques, the search for early biochemical markers in man has been undertaken. Through the use of biochemical, histological, and ultrastructural techniques, a causal relationship between radiation effects on type II pneumocytes, pulmonary cells, endothelial cells of blood vessels, and their roles in the production of pneumonitis and fibrosis will evolve.

  4. Predictive biochemical assays for late radiation effects

    International Nuclear Information System (INIS)

    Surfactant precursors or other products of Type II pneumocytes have the potential to be the first biochemical marker for late radiation effects. This is particularly clinically important in the combined modality era because of the frequent occurrence of pneumonitis and pulmonary fibrosis secondary to radiation or chemotherapy. Accordingly, correlative studies have been pursued with the Type II pneumocyte as a beginning point to understand the complex pathophysiology of radiation pneumonitis and fibrosis. From our ultrastructural and biochemical studies, it is evident that Type II pneumocytes are an early target of radiation and the release of surfactant into the alveolus shortly after exposure persists for days and weeks. Through the use of lavaging techniques, alveolar surfactant has been elevated after pulmonary irradiation. In three murine strains and in the rabbit, there is a strong correlation with surfactant release at 7 and/or 28 days in vivo with later lethality in months. In vitro studies using cultures of type II pneumocytes also demonstrate dose response and tolerance factors that are comparable to the in vivo small and large animal diagnostic models. New markers are being developed to serve as a predictive index for later lethal pneumonopathies. With the development of these techniques, the search for early biochemical markers in man has been undertaken. Through the use of biochemical, histological, and ultrastructural techniques, a causal relationship between radiation effects on type II pneumocytes, pulmonary cells, endothelial cells of blood vessels, and their roles in the production of pneumonitis and fibrosis will evolve

  5. Mechanical Signaling for Bone Modeling and Remodeling

    OpenAIRE

    Robling, Alexander G.; Turner, Charles H.

    2009-01-01

    Proper development of the skeleton in utero and during growth requires mechanical stimulation. Loading results in adaptive changes in bone that strengthen bone structure. Bone’s adaptive response is regulated by the ability of resident bone cells to perceive and translate mechanical energy into a cascade of structural and biochemical changes within the cells — a process known as mechanotransduction. Mechanotransduction pathways are among the most anabolic in bone, and consequently, there is g...

  6. Marcadores del remodelamiento óseo en saliva y su correlación con los niveles sanguíneos en ratas Bone remodeling markers in saliva as compared to serum in rats

    Directory of Open Access Journals (Sweden)

    Pellegrini Gretel

    2006-06-01

    Full Text Available Si bien es conocida la utilidad de marcadores óseos en suero u orina para determinar cambios en el remodelamiento óseo, la misma no ha sido totalmente estudiada en saliva. Este trabajo evalúa la correlación entre dos marcadores del recambio óseo: la fosfatasa alcalina ósea (isoforma ósea, FAO y el telopéptido C-terminal del colágeno tipo I (CTX, medidos simultáneamente en suero y saliva de ratas Wistar (250 a 300 g, SHAM (n=12 y ovariectomizadas (OVX (n=12. Luego de una semana de la cirugía se extrajo sangre en ayunas y saliva total estimulada donde se evaluó CTX (ELISA, RatLabs, Osteometer Bio Tech, Dinamarca y FAO (Wiener, colorimetría. En el suero, tanto CTX (ng/ml como FAO (UI/l en ratas OVX fueron significativamente mayores que en ratas SHAM (15.3±4.0 vs. 21.8±6.4, pBone markers are useful tools to measure bone remodeling; currently they are assessed in serum and urinary samples; however there is little information concerning their measurement in saliva. The present experimental study evaluates the possibility to measure collagen type I carboxiterminal telopeptide (CTX and bone alkaline phosphatase (b-AP in saliva, its correlation with serum samples in normal conditions and in the increase of the bone remodeling due to estrogen deficiency. Twenty four normal adult Wistar rats (300±20 g [12 SHAM and 12 rats after 1 week of bilateral ovariectomy (OVX] were studied. Fasting serum and total saliva after stimulation with pilocarpine were collected. In both samples were measured: CTX (ng/ml by ELISA (RatLabs, Osteometer Bio Tech, Denmark and b-AP (IU/L (Wiener, colorimetrically. Both CTX and b-AL in serum samples were significantly higher in OVX than in SHAM rats (15.3±4.0 vs. 21.8±6.4, p<0.05 y 71±29 vs. 104±23; p<0.01, respectively. Saliva presented the same behaviour (3.6±0.5 vs. 6.4±2.9; p<0.02 y 73±29 vs. 90±8; p<0.003, respectively. When saliva CTX and b-AP were plotted against serum concentration significant

  7. 新生适于胎龄儿骨转换标志物与骨声波传导速度的关系%Relationship between bone turnover markers and bone sound of speed in appropriate-for-gestational-age neonates

    Institute of Scientific and Technical Information of China (English)

    贺鸣凤; 陈平洋; 赵亚凡; 赵子艳

    2013-01-01

    Objective To investigate the correlation of gestational age (GA) with carboxyterminal propeptide of type Ⅰ procollagen (PICP),deoxypyridinoline (DPD),and bone sound of speed (SOS) in appropriate-for-gestational-age (AGA) neonates,as well as the relationship between bone turnover markers and bone SOS.Methods Sixtyfive AGA neonates were included in the study.The neonates were divided into three groups:preterm infant (GA ≤ 34 weeks,14 cases),late preterm infant (34 weeks<GA<37 weeks,13 cases),and full-term infant (GA ≥ 37 weeks,38 cases).Birth weight and length were measured in all cases,and Ponderal index (PI) was used to estimate their nutritional status.Venous blood was collected within 7 days after birth to measure blood PICP concentration.Urine was collected to measure urinary DPD and creatinine (Cr) levels.Omnisense 7000P ultrasound bone sonometer was applied to measure the SOS of the left tibia in all cases within 7 days after birth.Results There were significant differences in GA (F=140.199,P<0.001),birth weight (F=47.042,P<0.001),birth length (F=46.877,P<0.001),and PI (F=11.898,P<0.001) between the three groups; the higher the GA,the higher the birth weigh,birth length,and PI.There were significant differences in PICP (F=30.384,P<0.001),DPD/Cr (F=21.761,P<0.001),and SOS (F=20.052,P<0.001) between the three groups; the higher the GA,the lower the PICP and DPD/Cr and the higher the bone SOS.PICP and DPD/Cr were negatively correlated with GA,birth weight and bone SOS (P<0.01),while bone SOS was positively correlated with GA and birth weight (P<0.01),which still held true after adjustment for GA and birth weight.Conclusions Among AGA neonates,bone turnover markers are negatively correlated with GA,birth weight and bone SOS.High bone turnover is bad for bone health in AGA neonates.%目的 研究新生适于胎龄儿Ⅰ型前胶原羧基端前肽(PICP)、尿脱氧吡啶啉(DPD)及骨声波的传导速度(SOS)随胎龄变化的规律,探

  8. Markers of early disease and prognosis in COPD

    DEFF Research Database (Denmark)

    Dahl, Morten; Nordestgaard, Børge G

    2009-01-01

    vary substantially over time. This review explores potential markers of early disease and prognosis in COPD by examining genetic markers in the alpha(1)-antitrypsin, cystic fibrosis transmembrane conductance regulator (CFTR), and MBL-2 genes, and by examining the biochemical markers fibrinogen and C...

  9. Poly(Dopamine-Assisted Immobilization of Xu Duan on 3D Printed Poly(Lactic Acid Scaffolds to Up-Regulate Osteogenic and Angiogenic Markers of Bone Marrow Stem Cells

    Directory of Open Access Journals (Sweden)

    Chia-Hung Yeh

    2015-07-01

    Full Text Available Three-dimensional printing is a versatile technique to generate large quantities of a wide variety of shapes and sizes of polymer. The aim of this study is to develop functionalized 3D printed poly(lactic acid (PLA scaffolds and use a mussel-inspired surface coating and Xu Duan (XD immobilization to regulate cell adhesion, proliferation and differentiation of human bone-marrow mesenchymal stem cells (hBMSCs. We prepared PLA scaffolds and coated with polydopamine (PDA. The chemical composition and surface properties of PLA/PDA/XD were characterized by XPS. PLA/PDA/XD controlled hBMSCs’ responses in several ways. Firstly, adhesion and proliferation of hBMSCs cultured on PLA/PDA/XD were significantly enhanced relative to those on PLA. In addition, the focal adhesion kinase (FAK expression of cells was increased and promoted cell attachment depended on the XD content. In osteogenesis assay, the osteogenesis markers of hBMSCs cultured on PLA/PDA/XD were significantly higher than seen in those cultured on a pure PLA/PDA scaffolds. Moreover, hBMSCs cultured on PLA/PDA/XD showed up-regulation of the ang-1 and vWF proteins associated with angiogenic differentiation. Our results demonstrate that the bio-inspired coating synthetic PLA polymer can be used as a simple technique to render the surfaces of synthetic scaffolds active, thus enabling them to direct the specific responses of hBMSCs.

  10. Bone Grafts

    Science.gov (United States)

    ... repair and rebuild diseased bones in your hips, knees, spine, and sometimes other bones and joints. Grafts can also repair bone loss caused by some types of fractures or cancers. Once your body accepts the bone ...

  11. Low bone turnover phenotype in Rett syndrome

    DEFF Research Database (Denmark)

    Roende, Gitte; Petersen, Janne; Ravn, Kirstine;

    2014-01-01

    Background:Patients with Rett syndrome (RTT) are at risk of having low bone mass and low-energy fractures.Methods:We characterised bone metabolism by both bone formation and resorption markers in blood in a RTT population of 61 girls and women and 122 well-matched healthy controls. Levels of N...

  12. The Effect of Spaceflight on Bone Cell Cultures

    Science.gov (United States)

    Landis, William J.

    1999-01-01

    Understanding the response of bone to mechanical loading (unloading) is extremely important in defining the means of adaptation of the body to a variety of environmental conditions such as during heightened physical activity or in extended explorations of space or the sea floor. The mechanisms of the adaptive response of bone are not well defined, but undoubtedly they involve changes occurring at the cellular level of bone structure. This proposal has intended to examine the hypothesis that the loading (unloading) response of bone is mediated by specific cells through modifications of their activity cytoskeletal elements, and/or elaboration of their extracellular matrices. For this purpose, this laboratory has utilized the results of a number of previous studies defining molecular biological, biochemical, morphological, and ultrastructural events of the reproducible mineralization of a primary bone cell (osteoblast) culture system under normal loading (1G gravity level). These data and the culture system then were examined following the use of the cultures in two NASA shuttle flights, STS-59 and STS-63. The cells collected from each of the flights were compared to respective synchronous ground (1G) control cells examined as the flight samples were simultaneously analyzed and to other control cells maintained at 1G until the time of shuttle launch, at which point they were terminated and studied (defined as basal cells). Each of the cell cultures was assayed in terms of metabolic markers- gene expression; synthesis and secretion of collagen and non-collagenous proteins, including certain cytoskeletal components; assembly of collagen into macrostructural arrays- formation of mineral; and interaction of collagen and mineral crystals during calcification of the cultures. The work has utilized a combination of biochemical techniques (radiolabeling, electrophoresis, fluorography, Western and Northern Blotting, and light microscopic immunofluorescence) and structural

  13. Heterogeneous Glycation of Cancellous Bone and Its Association with Bone Quality and Fragility

    OpenAIRE

    Karim, Lamya; Vashishth, Deepak

    2012-01-01

    Non-enzymatic glycation (NEG) and enzymatic biochemical processes create crosslinks that modify the extracellular matrix (ECM) and affect the turnover of bone tissue. Because NEG affects turnover and turnover at the local level affects microarchitecture and formation and removal of microdamage, we hypothesized that NEG in cancellous bone is heterogeneous and accounts partly for the contribution of microarchitecture and microdamage on bone fragility. Human trabecular bone cores from 23 donors ...

  14. Effects of Tai Ji Exercise on Bone Structure and Function

    Institute of Scientific and Technical Information of China (English)

    Xu Hong; David Lawson

    2005-01-01

    To evaluated the effects of the 24 movements Tai Ji exercise on bone structure and function. Broadband Ultrsonic Attenuation (BUA) and velocity of sound (VOS), bone formation marker Osteocalcin (OSTN) and bone resorption markers urinary Pyridum crosslinks (PYR and D-PYR) were studied before and after four months of Tai Ji exercise. Improved bone structure and increased bone density in menopausal women were reflected by BUA results. The increased BUA appears to be associated with increased bone formation rather than decreased bone resorption.

  15. Improvement of cancellous bone microstructure in patients on teriparatide following alendronate pretreatment.

    Science.gov (United States)

    Fahrleitner-Pammer, Astrid; Burr, David; Dobnig, Harald; Stepan, Jan J; Petto, Helmut; Li, Jiliang; Krege, John H; Pavo, Imre

    2016-08-01

    An increase in procollagen type I amino-terminal propeptide (PINP) early after teriparatide initiation was shown to correlate with increased lumbar spine areal BMD and is a good predictor of the anabolic response to teriparatide. Few data exist correlating PINP and bone microstructure, and no data exist in patients on teriparatide following prior potent antiresorptive treatment. This exploratory analysis aimed to investigate the effects of teriparatide on cancellous bone microstructure and correlations of bone markers with microstructure in alendronate-pretreated patients. This was a post hoc analysis of changes in bone markers and three-dimensional indices of bone microstructure in paired iliac crest biopsies from a prospective teriparatide treatment study in postmenopausal women with osteoporosis who were either treatment-naïve (TN, n=16) or alendronate-pretreated (ALN, n=29) at teriparatide initiation. Teriparatide (20μg/day) was given for 24months; biopsies were taken at baseline and endpoint, and serum concentrations of PINP and type 1 collagen cross-linked C-telopeptide (βCTX) were measured at intervals up to 24months. In the TN and ALN groups, respectively, mean (SD) increases in three-dimensional bone volume/tissue volume were 105 (356)% (P=0.039) and 55 (139)% (P<0.005) and trabecular thickness 30.4 (30)% (P<0.001) and 30.8 (53)% (P<0.001). No significant changes were observed in trabecular number or separation. In the ALN patients, 3-month change of neither PINP nor βCTX correlated with indices of cancellous bone microstructure. However, 12-month changes in biochemical bone markers correlated significantly with improvements in bone volume/tissue volume, r=0.502 (P<0.01) and r=0.378 (P<0.05), trabecular number, r=0.559 (P<0.01) and r=0.515 (P<0.01), and reduction of trabecular separation, r=-0.432 (P<0.05) and r=-0.530 (P<0.01), for PINP and βCTX, respectively. We conclude that cancellous bone microstructure improved with teriparatide therapy

  16. Two Domains of Vimentin Are Expressed on the Surface of Lymph Node, Bone and Brain Metastatic Prostate Cancer Lines along with the Putative Stem Cell Marker Proteins CD44 and CD133

    International Nuclear Information System (INIS)

    Vimentin was originally identified as an intermediate filament protein present only as an intracellular component in many cell types. However, this protein has now been detected on the surface of a number of different cancer cell types in a punctate distribution pattern. Increased vimentin expression has been indicated as an important step in epithelial-mesenchymal transition (EMT) required for the metastasis of prostate cancer. Here, using two vimentin-specific monoclonal antibodies (SC5 and V9 directed against the coil one rod domain and the C-terminus of the vimentin protein, respectively), we examined whether either of these domains would be displayed on the surface of three commonly studied prostate cancer cell lines isolated from different sites of metastases. Confocal analysis of LNCaP, PC3 and DU145 prostate cancer cell lines (derived from lymph node, bone or brain prostate metastases, respectively) demonstrated that both domains of vimentin are present on the surface of these metastatic cancer cell types. In addition, flow cytometric analysis revealed that vimentin expression was readily detected along with CD44 expression but only a small subpopulation of prostate cancer cells expressed vimentin and the putative stem cell marker CD133 along with CD44. Finally, Cowpea mosaic virus (CPMV) nanoparticles that target vimentin could bind and internalize into tested prostate cancer cell lines. These results demonstrate that at least two domains of vimentin are present on the surface of metastatic prostate cancer cells and suggest that vimentin could provide a useful target for nanoparticle- or antibody- cancer therapeutic agents directed against highly invasive cancer and/or stem cells

  17. Effects of raloxifene hydrochloride on bone mineral density, bone metabolism and serum lipids in postmenopausal women: a randomized clinical trial in Beijing

    Institute of Scientific and Technical Information of China (English)

    ZHENG Shurong 郑淑蓉; Abie Ekangaki; Jodie Stocks; Kristine Harper; LIU Jianli 刘建立; WU Yiyong 吴宜勇; ZHANG Zhonglan 张忠兰; YANG Xin 杨欣; HUI Ying 惠英; ZHANG Ying 张颖; CHEN Shuling 陈淑玲; DENG Wenhui 邓文慧; LIU Hui 刘慧

    2003-01-01

    Objective To determine the effects of raloxifene hydrochloride (RLX) on bone mineral density (BMD), bone metabolism markers and serum lipids in healthy postmenopausal women in Beijing.Methods A multicenter, randomized, double-blind, placebo-controlled study was conducted in a total of 204 healthy postmenopausal women (age 59.5±5.0 years and weight 62.8±8.7 kg) treated with either RLX 60 mg (n=102) or placebo (n=102) daily for 12 months. BMD, serum lipids, and bone markers were measured before and after drug administration.Results Compared with placebo, RLX produced a significant increase in both total lumbar spine and total hip BMD. For the lumbar spine, percentage increase in total BMD was 2.3% with RLX compared with a decrease of 0.1% with placebo (P<0.001). Corresponding values for total hip BMD were a 2.5% increase for RLX and a 1.1% increase for placebo (P=0.011). For biochemical markers of bone metabolism, serum osteocalcin and C-telopeptide, percentage decreases were 27.65% and 24.02% in RLX-treated subjects. Corresponding values in placebo were a 10.64% decrease and a 15.75% increase (RLX compared with placebo, both P<0.001). For total cholesterol and low-density lipoprotein cholesterol levels, percentage decreases were 6.44% and 34.58% in the RLX-treated group. Corresponding values in placebo-treated patients were a 1.44% increase and a 19.07% decrease (RLX compared with placebo, both P<0.001). No differences were found for high-density lipoprotein cholesterol or triglyceride levels between the two groups. Only 5 subjects discontinued early owing to an adverse event (3 in the RLX group and 2 in the placebo group). Conclusions This study confirms that RLX exerts positive effects on the skeleton, increasing BMD and decreasing biochemical markers of bone metabolism, and has a positive effect on the overall serum lipid profile in postmenopausal women in China.

  18. Investigations of Diabetic Bone Disease

    DEFF Research Database (Denmark)

    Linde, Jakob Starup

    Diabetes mellitus is associated with an increased risk of fracture with and current fracture predictors underestimate fracture risk in both type 1 and type 2 diabetes. Thus, further understanding of the underlying causes of diabetic bone disease may lead to better fracture predictors and preventive...... measures in patients with diabetes. This PhD thesis reports the results of two systematic reviews and a meta-analysis, a state-of-the-art intervention study, a clinical cross-sectional study and a registry-based study all examining the relationship between diabetes, glucose, and bone. Patients with type 2...... diabetes had lower bone turnover markers compared to patients with type 1 diabetes and bone mineral density and tissue stiffness were increased in patients with type 2 diabetes. The bone turnover markers were inversely associated with blood glucose in patients with diabetes and both an oral glucose...

  19. Mechanobiological regulation of bone remodeling -- Theoretical development of a coupled systems biology-micromechanical approach

    OpenAIRE

    Scheiner, Stefan; Pivonka, Peter; Hellmich, Christian; Smith, David W.

    2012-01-01

    Bone remodeling involves the coordinated removal of bone by osteoclasts and addition of bone by osteoblasts, a process that is modulated by the prevailing mechanical environment. In this paper a fully coupled model of bone remodeling is developed, based on coupling a bone cell population model with a micromechanical homogenization scheme of bone stiffness. While the former model considers biochemical regulatory mechanisms between bone cells such as the RANK-RANKL-OPG pathway and action of TGF...

  20. Functional assay, expression of growth factors and proteins modulating bone-arrangement in human osteoblasts seeded on an anorganic bovine bone biomaterial

    Directory of Open Access Journals (Sweden)

    O Trubiani

    2010-07-01

    Full Text Available The basic aspects of bone tissue engineering include chemical composition and geometry of the scaffold design, because it is very important to improve not only cell attachment and growth but especially osteodifferentiation, bone tissue formation, and vascularization. Geistlich Bio-Oss® (GBO is a xenograft consisting of deproteinized, sterilized bovine bone, chemically and physically identical to the mineral phase of human bone.In this study, we investigated the growth behaviour and the ability to form focal adhesions on the substrate, using vinculin, a cytoskeletal protein, as a marker. Moreover, the expression of bone specific proteins and growth factors such as type I collagen, osteopontin, bone sialoprotein, bone morphogenetic protein-2 (BMP-2, BMP-7 and de novo synthesis of osteocalcin in normal human osteoblasts (NHOst seeded on xenogenic GBO were evaluated. Our observations suggest that after four weeks of culture in differentiation medium, the NHOst showed a high affinity for the three dimensional biomaterial; in fact, cellular proliferation, migration and colonization were clearly evident. The osteogenic differentiation process, as demonstrated by morphological, histochemical, energy dispersive X-ray microanalysis and biochemical analysis was mostly obvious in the NHOst grown on three-dimensional inorganic bovine bone biomaterial. Functional studies displayed a clear and significant response to calcitonin when the cells were differentiated. In addition, the presence of the biomaterial improved the response, suggesting that it could drive the differentiation of these cells towards a more differentiated osteogenic phenotype. These results encourage us to consider GBO an adequate biocompatible three-dimensional biomaterial, indicating its potential use for the development of tissue-engineering techniques.

  1. Nanocrystalline diamond: In vitro biocompatibility assessment by MG63 and human bone marrow cells cultures.

    Science.gov (United States)

    Amaral, M; Dias, A G; Gomes, P S; Lopes, M A; Silva, R F; Santos, J D; Fernandes, M H

    2008-10-01

    Nanocrystalline diamond (NCD) has a great potential for prosthetic implants coating. Nevertheless, its biocompatibility still has to be better understood. To do so, we employed several materials characterization techniques (SEM, AFM, micro-Raman spectroscopy) and cell culture assays using MG63 osteoblast-like and human bone marrow cells. Biochemical routines (MTT assays, Lowry's method, ALP activity) supported by SEM and confocal microscopy characterization were carried out. We used silicon nitride (Si3N4) substrates for NCD coatings based on a previous demonstration of the superior adhesion and tribological performance of these NCD coated ceramics. Results demonstrate an improved human osteoblast proliferation and the stimulation of differentiated markers, like ALP activity and matrix mineralization, compared with standard polystyrene tissue culture plates. The nanometric featuring of NCD, associated to its chemical affinity are key points for bone regeneration purposes. PMID:18085649

  2. Effects of raloxifene hydrochloride on bone mineral density, bone metabolism and serum lipids in Chinese postmenopausal women with osteoporosis:a multi-center, randomized, placebo-controlled clinical trial

    Institute of Scientific and Technical Information of China (English)

    LIU Jian-li刘建立; LIU Hui刘慧; CHEN Xiao-ping陈小平; LIU Yu-juan刘玉娟; Abie Ekangaki; ZHENG Yi-man郑以漫; Adolfo Diez-Perez; Kristine Harper; ZHU Han-min朱汉民; HUANG Qi-ren黄琪仁; ZHANG Zhong-lan张忠兰; LI Hui-lin李慧林; QIN Yue-juan秦跃娟; ZHANG Ying张颖; WEI Dao-lin魏道林; LU Jing-hui陆敬辉

    2004-01-01

    Background Raloxifene has been approved for prevention and treatment of postmenopausal osteoporosis in Caucasian women. It also has some positive effects on serum lipids in Caucasians. The objective of this study was to determine the effect of raloxifene hydrochloride on lumbar spine and total hip bone mineral density (BMD), bone metabolism, and serum lipids in Chinese postmenopausal women with osteoporosis.Methods This was a multi-center, randomized, double-blind, placebo-controlled clinical trial in which 204 postmenopausal Chinese women with osteoporosis were assigned to receive raloxifene (60 mg) or placebo treatment daily for 12 months. BMD, serum bone metabolism markers, and serum lipids were measured before and after drug administration. BMD was measured by Dual-Energy X-Ray Absorptiometry (DEXA) and bone metabolism markers were analyzed by one-step enzyme-linked immunosorbent assay. Serum lipids were measured by enzymatic analysis.Results At the end of the 12-month study, lumbar spine BMD increased in both groups with a mean increase of (3.3±4.8) % in the raloxifene group and (1.0±4.9) % in the placebo group (P0.05). In the raloxifene group, the median decreases in the biochemical markers of bone metabolism serum osteocalcin and C-telopeptide were 41.7% and 61.5%, respectively. These changes were statistically significant compared with those in the placebo group (10.6% and 35.6%, P<0.001, respectively). Both total cholesterol and low-density lipoprotein cholesterol decreased significantly in the raloxifene group compared with those in the placebo group (P<0.001, respectively) and there was no significant effect of raloxifene on high-density lipoprotein cholesterol and triglycerides compared with placebo. Conclusions Raloxifene 60 mg/d for 12 months significantly increases lumbar spine and total hip BMD, significantly decreases bone turnover, and has favourable effects on serum lipids in Chinese postmenopausal women with osteoporosis.

  3. Bone Cancer

    Science.gov (United States)

    Cancer that starts in a bone is uncommon. Cancer that has spread to the bone from another ... more common. There are three types of bone cancer: Osteosarcoma - occurs most often between ages 10 and ...

  4. Bone Cancer

    Science.gov (United States)

    Cancer that starts in a bone is uncommon. Cancer that has spread to the bone from another part of the body is more common. There are three types of bone cancer: Osteosarcoma - occurs most often between ages 10 ...

  5. Bone Diseases

    Science.gov (United States)

    Your bones help you move, give you shape and support your body. They are living tissues that rebuild constantly ... childhood and your teens, your body adds new bone faster than it removes old bone. After about ...

  6. Recent abstracts in biochemical technology

    OpenAIRE

    R R Siva Kiran; Brijesh P

    2008-01-01

    “Recent abstracts in biochemical technology” is a collection of interesting research articles published in “List of biochemical technology journals” (Table 1). The abstracts are most likely to report significant results in biochemical technology.

  7. Serum markers of liver fibrosis

    DEFF Research Database (Denmark)

    Veidal, Sanne Skovgård; Bay-Jensen, Anne-Christine; Tougas, Gervais;

    2010-01-01

    BACKGROUND: Fibrosis is a central histological feature of chronic liver diseases and is characterized by the accumulation and reorganization of the extracellular matrix. The gold standard for assessment of fibrosis is histological evaluation of a percutaneous liver biopsy. Albeit a considerable......-epitopes, may be targeted for novel biochemical marker development in fibrosis. We used the recently proposed BIPED system (Burden of disease, Investigative, Prognostic, Efficacy and Diagnostic) to characterise present serological markers. METHODS: Pubmed was search for keywords; Liver fibrosis, neo...... systematic use of the neo-epitope approach, i.e. the quantification of peptide epitopes generated from enzymatic cleavage of proteins during extracellular remodeling, may prove productive in the quest to find new markers of liver fibrosis....

  8. High bone turnover is associated with low bone mass in both pre- and postmenopausal women

    DEFF Research Database (Denmark)

    Ravn, Pernille; Fledelius, C; Rosenquist, C; Overgaard, K; Christiansen, C

    1996-01-01

    In 979 healthy women, aged 30-75 years, bone mass was measured by DXA in the lumbar spine and proximal femur, and by SXA in the distal forearm. Bone turnover was assessed by urinary CrossLaps (CrossLaps ELISA), a new assay which measures type I collagen degradation products in urine and by...... osteocalcin (two-site N-Mid hOsteocalcin ELISA), a new assay which measures the N-terminal-mid fragment (1-43) as well as the intact (1-49) osteocalcin (OCN-Mid) in serum. For comparison data on urinary hydroxyproline (fU Hpr/Cr) and serum, total alkaline phosphatase were included (AP). In premenopausal women...... below 50 years of age, the concentrations of the biochemical markers were stable with age. At menopause CrossLaps and OCN-Mid increased abruptly to a level 60% and 35% above the premenopausal mean values (p < 0.001). Premenopausal women in the highest quartiles, stratified according to the concentration...

  9. First trimester screening using ultrasound and serum markers in Panamanians : f0 actors associated with adverse pregnancy outcomes

    Directory of Open Access Journals (Sweden)

    Tania T Herrera

    2014-01-01

    Full Text Available Background: There is no published data on the association between serum biochemical and ultrasonographic markers and adverse pregnancy outcomes. Therefore, the aim of this study was to determine the factors associated with perinatal outcomes in singleton pregnancies using ultrasound and maternal serum markers during the first trimester in Panamanians. Materials and Methods: This was a prospective observational study of 468 first trimester singleton pregnancies conducted over a 7-year period. All women attending a prenatal screening clinic during the study period were informed of the study and the option to participate. Two maternal serum markers, free β-human chorionic gonadotropin (β-hCG and pregnancy associated plasma protein-A (PAPP-A, and four fetal ultrasound markers, nuchal translucency thickness, nasal bone, flow across the tricuspid valve, and flow in the ductus venosus (DV, were measured by certified maternal fetal medicine specialists. Adverse outcomes included miscarriage, major structural defects, genetic disorders, and major fetal cardiac defects. Results: A total of 454 (97% pregnancies were unaffected. Median maternal age was 31.5 years (range: 18-50. Maternal age was significantly greater in cases of adverse outcome (P = 0.007. The number of adverse outcomes associated with an absent or hypoplastic nasal bone, tricuspid valve regurgitation, and abnormal flow in the DV were significantly greater relative to unaffected pregnancies (Ps < 0.001. No differences were found in fetal crown-rump length or maternal serum levels of β-hCG or PAPP-A. Conclusion: Abnormal ultrasound markers are associated with adverse outcomes. Women with normal ultrasound and serum markers should be reassured of low risk of adverse pregnancy outcomes.

  10. Bone Structural Changes and Estimated Strength After Gastric Bypass Surgery Evaluated by HR-pQCT.

    Science.gov (United States)

    Frederiksen, Katrine Diemer; Hanson, Stine; Hansen, Stinus; Brixen, Kim; Gram, Jeppe; Jørgensen, Niklas Rye; Støving, René Klinkby

    2016-03-01

    Roux-en-Y gastric bypass surgery (RYGB) is an effective treatment of morbid obesity, with positive effects on obesity-related complications. The treatment is associated with bone loss, which in turn might increase fracture risk. The aim of this study was to evaluate changes in bone mineral density (BMD) and bone architecture assessed using dual-energy X-ray absorptiometry (DXA) and high-resolution peripheral quantitative computed tomography (HR-pQCT), 6 and 12 months after RYGB, and correlate them to changes in selected biochemical markers. A prospective cohort study included 25 morbidly obese patients (10 males, 15 females). Patients were examined with DXA of the hip and spine, HR-pQCT of radius and tibia, and blood sampling before and 6 and 12 months after RYGB. Patients lost in average 33.5 ± 12.1 kg (25.8 ± 8.5 %) in 12 months. In tibia, we found significant loss of total, cortical and trabecular volumetric BMD after 12 months (all p < 0.001). Microarchitectural changes involved lower trabecular number, increased trabecular separation, and network inhomogeneity along with thinning of the cortex. Estimated bone failure load was decreased after 12 months (p = 0.005). We found only minor changes in radius. Results demonstrate significant alterations of bone microarchitecture suggesting an accelerated endosteal resorption along with disintegration of the trabecular structure which resulted in a loss of estimated bone strength in tibia. Such changes may underlie the recently reported increased risk of fracture in bariatric patients after surgery. We only observed bone structural changes in the weight-bearing bone, which indicates that mechanical un-loading is the primary mediator. PMID:26661530

  11. Archival bone marrow samples

    DEFF Research Database (Denmark)

    Lund, Bendik; Najmi, Laeya A; Wesolowska-Andersen, Agata;

    2015-01-01

    AB Archival samples represent a significant potential for genetic studies, particularly in severe diseases with risk of lethal outcome, such as in cancer. In this pilot study, we aimed to evaluate the usability of archival bone marrow smears and biopsies for DNA extraction and purification, whole...... with samples stored for 4 to 10 years. Acceptable call rates for SNPs were detected for 7 of 42 archival samples. In conclusion, archival bone marrow samples are suitable for DNA extraction and multiple marker analysis, but WGA was less successful, especially when longer fragments were analyzed. Multiple SNP...

  12. [Cytogenetics of bone sarcomas].

    Science.gov (United States)

    Vagner-Capodano, A M; Poitout, D

    There has been much progress in the cytogenesis, and molecular biology of bone tumours such as Ewing sarcoma and osteosarcomas, greatly improving diagnostic possibilities and prognosis. Ewing's sarcoma is an indifferentiated sarcoma with round cells which usually occurs in children or adolescents. Ewing's sarcoma corresponds to 6% of all bone tumours. Histologically Ewing's sarcoma belongs to a group of small round cell tumours including neuroblastoma, embryon and alveolar rhabdomyosarcoma and non-Hodgkin's lymphoma. Differential diagnosis is difficult. Cytogenetic examinations can now differentiate Ewing's sarcoma from other small round cell tumours. There is a specific 11:12 translocation (q24; q12) which can be used as a marker. PMID:8785922

  13. Type I Collagen Synthesis Marker Procollagen I N-Terminal Peptide (PINP) in Prostate Cancer Patients Undergoing Intermittent Androgen Suppression

    International Nuclear Information System (INIS)

    Intermittent androgen suppression (IAS) therapy for prostate cancer patients attempts to maintain the hormone dependence of the tumor cells by cycles alternating between androgen suppression (AS) and treatment cessation till a certain prostate-specific antigen (PSA) threshold is reached. Side effects are expected to be reduced, compared to standard continuous androgen suppression (CAS) therapy. The present study examined the effect of IAS on bone metabolism by determinations of serum procollagen I N-terminal peptide (PINP), a biochemical marker of collagen synthesis. A total of 105 treatment cycles of 58 patients with prostate cancer stages ≥pT2 was studied assessing testosterone, PSA and PINP levels at monthly intervals. During phases of AS lasting for up to nine months PSA levels were reversibly reduced, indicating apoptotic regression of the prostatic tumors. Within the first cycle PINP increased at the end of the AS period and peaked in the treatment cessation phase. During the following two cycles a similar pattern was observed for PINP, except a break in collagen synthesis as indicated by low PINP levels in the first months off treatment. Therefore, measurements of the serum PINP concentration indicated increased bone matrix synthesis in response to >6 months of AS, which uninterruptedly continued into the first treatment cessation phase, with a break into each of the following two pauses. In summary, synthesis of bone matrix collagen increases while degradation decreases during off-treatment phases in patients undergoing IAS. Although a direct relationship between bone matrix turnover and risk of fractures is difficult to establish, IAS for treatment of biochemical progression of prostate tumors is expected to reduce osteoporosis in elderly men often at high risk for bone fractures representing a highly suitable patient population for this kind of therapy

  14. Relação entre os níveis de vitamina A e os marcadores bioquímicos do estado nutricional de ferro em crianças e adolescentes Relationship between vitamin A and biochemical markers of iron status in children and adolescents

    Directory of Open Access Journals (Sweden)

    Rita de Cássia Ribeiro Silva

    2008-06-01

    Full Text Available OBJETIVO: Verificar a relação entre vitamina A e os marcadores bioquímicos da situação nutricional do ferro. MÉTODOS: Participaram deste estudo 178 indivíduos com idade entre 7 e 17 anos, residentes na cidade de Jequié (BA. Os indivíduos foram submetidos a exame de sangue para dosagem de retinol e de marcadores bioquímicos do estado nutricional relativo ao ferro. Além disso, foram realizados exames antropométricos, parasitológico de fezes e coletadas informações de consumo dietético de ferro e das condições sócio-ambiental e domiciliar da família. Utilizou-se a análise de regressão linear múltipla como técnica estatística para avaliar a associação de interesse. RESULTADOS: Constatou-se associação positiva e estatisticamente significante entre os níveis de retinol sérico e a concentração de hemoglobina (p=0,007, ferro sérico (p=0,010 e transferrina saturada (p=0,027. Esses efeitos se mantiveram após ajuste dos modelos pelas variáveis demográficas, infecções parasitárias (Schistosoma mansoni, Trichiura trichuris, Ascaris lumbricoides e ancilostomídeos, consumo de ferro alimentar biodisponível e condições ambientais e domiciliares. CONCLUSÃO: A vitamina A parece contribuir para elevar o ferro orgânico da população, em especial, em áreas onde a deficiência de vitamina A e a anemia coexistem.OBJECTIVE: The objective of this study was to verify the relationship between vitamin A and the biochemical markers of iron status. METHODS: A total of 178 individuals aging from 7 to 17 years participated in this study, all living in Jequié, BA. The individuals were submitted to blood tests to dose retinol and biochemical iron markers. Furthermore, anthropometric measurements and stool analyses were done and dietary information regarding iron intake, socio-environmental and home conditions of the family were collected. Multiple linear regression analysis was done to assess the association of interest. RESULTS: A

  15. Bone Densitometry (Bone Density Scan)

    Science.gov (United States)

    ... of DXA Bone Densitometry? What is a Bone Density Scan (DXA)? Bone density scanning, also called dual-energy x-ray absorptiometry ( ... is today's established standard for measuring bone mineral density (BMD). An x-ray (radiograph) is a noninvasive ...

  16. Bone Metabolism in Adolescents with Anorexia Nervosa

    Science.gov (United States)

    Misra, Madhusmita; Klibanski, Anne

    2013-01-01

    Adolescents with anorexia nervosa (AN) are at risk for low bone mass at multiple sites, associated with decreased bone turnover. Bone microarchitecture is also affected, with a decrease in bone trabecular volume and trabecular thickness, and an increase in trabecular separation. The adolescent years are typically the time when marked increases occur in bone mass accrual towards the attainment of peak bone mass, an important determinant of bone health and fracture risk in later life. AN often begins in the adolescent years, and decreased rates of bone mass accrual at this critical time are therefore also concerning for deficits in peak bone mass. Factors contributing to low bone density and decreased rates of bone accrual include alterations in body composition such as low BMI and lean body mass, and hormonal alterations such as hypogonadism, a nutritionally acquired resistance to growth hormone and low levels of IGF-1, relative hypercortisolemia, low levels of leptin, and increased adiponectin (for fat mass) and peptide YY. Therapeutic strategies include optimizing weight and menstrual recovery, and adequate calcium and vitamin D replacement. Oral estrogen-progesterone combination pills are not effective in increasing bone density in adolescents with AN. RhIGF-1 increases levels of bone formation markers in the short-term, while long-term effects remain to be determined. Bisphosphonates act by decreasing bone resorption, and are not optimal for use in adolescents with AN, in whom the primary defect is low bone formation. PMID:21301203

  17. Biochemical markers of psoriasis as a metabolic disease

    Directory of Open Access Journals (Sweden)

    Agnieszka Gerkowicz

    2012-07-01

    Full Text Available Psoriasis is a chronic immune mediated inflammatory skin disease with a population prevalence of 2–3%. In recent years, psoriasis has been recognized as a systemic disease associated with metabolic syndrome or its components such as: obesity, insulin resistance, hypertension and atherogenic dyslipidemia. Many bioactive substances have appeared to be related to metabolic syndrome. Based on current literature, we here discuss the possible role of adiponectin, leptin, ghrelin, resistin, inflammatory cytokines, plasminogen activator inhibitor 1, uric acid, C-reactive protein and lipid abnormalities in psoriasis and in metabolic syndrome.

  18. molecular and biochemical markers for early pregnancy detection in sheep

    International Nuclear Information System (INIS)

    the present study was conducted as in the experimental sheep farm of the nuclear research center, egyptian atomic energy authority in association with the institute of graduate studies and research. university of alexandria. this study aims to accurately and economically detect early pregnancy using techniques of biotechnology .consequently, the suggested method may replace techniques used nowadays for pregnancy detection since these techniques have disadvantages (e.g. long time before accurately determining pregnancy in rectal abdominal palpation and high cost and hazards of using serum progesterone radio immunoassay (RIA). the farmer may benefit from such detection economically by increasing his farm breeding cycle efficiency , reducing the breeding expenses . and isolating fertile ewes as early as possible. therefore reducing abortion incidences. stillbirths or production of weak lambs. this study was performed in two separate experiments. the first experiment: twenty four mixed breed sheep from the experimental sheep of the nuclear research center . egyptian atomic energy authority were used in this study. blood samples were taken at days 5.7.10.16.21.and 25 days after mating and a native- page were applied on the serum of these samples in correlation with serum progesterone RIA test. in addition . white blood cells were isolated from blood samples to obtain purified total RNA for RT-PCR. gel images were analyzed using totallab v.i.II(nonlinear dynamic, Newcastle upontyne. UK) computer software.the second experiment:nine pregnant and two non-pregnant ewes used in this experiment. blood sample were taken 0.25.30.35.40.45.and 50 days after mating and SDS-page were applied on the serum of theses samples. Native-page were applied for serum samples and stained for glycoproteins. gel images were analyzed using totallab v/1.11 (nonlinear dynamic. Newcastle upontyne. UK) computer software

  19. Pro-atherogenic biochemical markers in haemodialysis patients

    International Nuclear Information System (INIS)

    This work aims to investigate lipid peroxidation, lipid profile, and oxidative protein modification in haemodialysis patients as risk factors of heart diseases. Thirty patients with chronic renal failure who were haemodialyzed at Haemodialysis Unit in Zagazig University hospitals. The patients do not have coronary heart disease. Fifteen age and sex matched health control were included in this study. The plasma level of malondialdehyde (MDA) and serum level of 4 hydroxy nonenal (4-HNE) as indicators of lipid peroxidation, 2,4 dinitrop-henylhydrazone reactive carbonyl derivatives (CRD) as indicator of oxidative protein modification, protein sulphydryl groups (P-SH) in plasma which are important chain breaking sacrificial antioxidant. Also lipid profile including triglycerides (TGs), total plasma cholesterol and high density lipoprotein cholesterol (HDL-C) were estimated in both groups. There were significant increases in MDA, 4-HNE and TGs in haemodialysis patients (1.4 ±0.21 nmol/L, 350.3 ±57.4 μmol/L and 198.4±16.7 mg /dl respectively) compared to the control group whose results were (0.95 ±0.15 nmol/L, 28.5 ±13.25 μmol/L and 149.1 ±6.2 mg/dl respectively). The plasma levels of total cholesterol (172.3±15.8 mg/dl) and HDL-C (43.93 ±5.19 mg/dl) in the patients group are not significantly changed when compared with control subjects (170.8 ±17.1 mg / dl and 45.43±6.1 mg/dl respectively). The results presented here also show significant increase in the plasma RCD (1.1±0.3 μmol/g protein) as compared with the control group (0.48 ±0.14 μmol/g protein). The concentration of plasma P-SH were markedly reduced in patients group (0.27±0.09 mmol/L) when compared with the control group (0.58 ±0.1 mmol/L)

  20. Pathogenetic significance of biochemical markers in evaluation of nail destruction

    Directory of Open Access Journals (Sweden)

    Urazovskaya E.V. Mikashinovich Z.I.

    2013-06-01

    Full Text Available The purpose of the article is to evaluate the state of metabolic status of patients with distal onycholysis of hands. Materials and methods: Evaluation of hemoglobin, red blood cells, neutrophil granulocytes, the level of glycolytic processes of lactate and pyruvate, the activity of superoxide dismutase, catalase, myeloperoxidase, neutrophil elastase, serum alkaline phosphatase activity, as well as degradation products content of collagen structures to relative fractions of the blood free and peptide bound oxyproline. Results: It has been shown that free fraction oxyproline in 18 women with distal onycholysis of hands and hemoglobinemia prevails over peptide bound oxyproline fraction in blood, activated glycolytic processes on the modulation mechanism of adaptation with a slight increase of the lactate and pyruvate, the inhibition of activity of antioxidant enzymes, alkaline phosphatase and serum first phase elongation of blood coagulation as a result of the activated plasma recalcification time. Conclusion: The functional state of red blood cells, neutrophil granulocytes in the oppression of the first line of antioxidant enzyme defense and extension in patients with distal onycholysis of hands points to the formation of a mixed type of chronic hypoxia.

  1. CORD SERUM FERRITIN AS BIOCHEMICAL MARKER IN IRON DEFICIENCY ANEMIA

    OpenAIRE

    Sherin; Jyothy

    2014-01-01

    Iron deficiency anemia is by far the most frequent type of anemia seen in pregnancy, accounting for 90% or more of all cases. Iron deficiency anemia has adverse consequences on infant development. Therefore maternal anemia should be prevented and treated. Serum ferritin is the single best non-invasive test and is a very useful and reliable index of iron stores especially during pregnancy, with low levels indicating iron deficiency. While infants born to anemic mother are ...

  2. Study of some biochemical and genetic markers in asthmatic children

    International Nuclear Information System (INIS)

    Bronchial asthma is the most common chronic disease of childhood. Interleukin-4 (IL-4) and interleukin-13 (IL-13) are T-helper type 2 (Th2) cytokines with numerous activities that contribute to allergic inflammation and asthma. Both IL-4 and IL-13 use the IL-4 receptor alpha chain (IL-4 Ra) as a component of their respective systems. Allelic variants of IL-4 Ra have been reported and the R 576 IL-4 Ra allele was recently shown to be a risk factor for atopy. This study was designed to determine whether the R 576 allele was associated with the prevalence of asthma among children and also to evaluate the role of serum IL-4 and IL-13 in the development of asthma. Hence, we used a developed, rapid and reliable PCR-based assay to screen individuals for the R 576 IL-4 Ra allele. This assay has also used to genotype prospectively both recruited children with asthma (n = 22) and controls (n = 11). Serum IL-4 and IL-13 were determined by ELISA. The results of the PCR-based assay revealed a significant association of R 576 IL-4 Ra with the prevalence of all asthmatics, Chi-square (x2) 4.035; P 2 = 4.197, P 2 = 0.609, P > 0.05). Consequently, R 576 IL-4 Ra acts as an allergic asthma susceptibility gene. Also, asthmatic children displayed higher significant levels of IL-4 and IL-13 (P <0.()1). Allergic group exhibited significant higher levels of IL-4 (P < 0.001) and IL-13 (P < 0. 05). This gave clear evidence that both cytokines contributed to the development of asthma especially the allergic phenotype

  3. Genetic and biochemical markers in physical exercise assessment

    OpenAIRE

    Innocenti, G.; G. Morucci; J.J.V. Branca; Pacini, S; Gulisano, M

    2012-01-01

    An excessive physical activity could stress the organism determining unbalanced hormonal orders that can negatively affect the state of optimal health and therefore the sporting output. In particular during physical exercise the free salivary Cortisol concentration increases with the intensity of the exercise followed by an increase of the free Testosterone. On this basis, there is the possibility the determine if the program of preset physical exercise evokes an abnormal reaction of ada...

  4. Alleviating anastrozole induced bone toxicity by selenium nanoparticles in SD rats

    International Nuclear Information System (INIS)

    Aromatase inhibitors like anastrozole play an undisputed key role in the treatment of breast cancer, but on the other hand, various side effects like osteoporosis and increased risk of bone fracture accompany the chronic administration of these drugs. Here we show for the first time that selenium nanoparticles, when given in conjugation to anastrozole, lower the bone toxicity caused by anastrozole and thus reduce the probable damage to the bone. Selenium nanoparticles at a dose of 5 μg/ml significantly reduced the cell death caused by anastrozole (1 μM) in HOS (human osteoblast) cells. In addition, our results also highlighted that in female SD rat model, SeNPs (0.25, 0.5, 1 mg/kg/day) significantly prevented the decrease in bone density and increase in biochemical markers of bone resorption induced by anastrozole (0.2 mg/kg/day) treatment. Histopathological examination of the femurs of SeNP treated group revealed ossification, mineralization, calcified cartilaginous deposits and a marginal osteoclastic activity, all of which indicate a marked restorative action, suggesting the protective action of the SeNPs. Interestingly, SeNPs (1 mg/kg/day) also exhibited protective effect in ovariectomized rat model, by preventing osteoporosis, which signifies that bone loss due to estrogen deficiency can be effectively overcome by using SeNPs. - Highlights: ► SeNPs significantly reduce bone toxicity in anastrozole treated rats. ► SeNPs successfully prevented osteoporosis in ovariectomized rats. ► SeNP treatment lowered the levels of TRAP and increased the levels of ALKP

  5. Alleviating anastrozole induced bone toxicity by selenium nanoparticles in SD rats

    Energy Technology Data Exchange (ETDEWEB)

    Vekariya, Kiritkumar K.; Kaur, Jasmine; Tikoo, Kulbhushan, E-mail: tikoo.k@gmail.com

    2013-04-15

    Aromatase inhibitors like anastrozole play an undisputed key role in the treatment of breast cancer, but on the other hand, various side effects like osteoporosis and increased risk of bone fracture accompany the chronic administration of these drugs. Here we show for the first time that selenium nanoparticles, when given in conjugation to anastrozole, lower the bone toxicity caused by anastrozole and thus reduce the probable damage to the bone. Selenium nanoparticles at a dose of 5 μg/ml significantly reduced the cell death caused by anastrozole (1 μM) in HOS (human osteoblast) cells. In addition, our results also highlighted that in female SD rat model, SeNPs (0.25, 0.5, 1 mg/kg/day) significantly prevented the decrease in bone density and increase in biochemical markers of bone resorption induced by anastrozole (0.2 mg/kg/day) treatment. Histopathological examination of the femurs of SeNP treated group revealed ossification, mineralization, calcified cartilaginous deposits and a marginal osteoclastic activity, all of which indicate a marked restorative action, suggesting the protective action of the SeNPs. Interestingly, SeNPs (1 mg/kg/day) also exhibited protective effect in ovariectomized rat model, by preventing osteoporosis, which signifies that bone loss due to estrogen deficiency can be effectively overcome by using SeNPs. - Highlights: ► SeNPs significantly reduce bone toxicity in anastrozole treated rats. ► SeNPs successfully prevented osteoporosis in ovariectomized rats. ► SeNP treatment lowered the levels of TRAP and increased the levels of ALKP.

  6. Effect of underground working on vitamin D levels and bone mineral densities in coal miners: a controlled study

    Energy Technology Data Exchange (ETDEWEB)

    Sarikaya, S.; Ozdolap, S.; Mungan, A.G.; Gumustas, S.; Koc, U.; Guven, B.; Begendik, F. [Zonguldak Karaelmas University, Zonguldak (Turkey)

    2006-07-15

    The aim of this study was to determine the effect of underground working on 25-hydroxyvitamin D (25-OHD) levels and bone mineral density (BMD) values in coal miners. Fifty coal miners working underground and 50 surface workers as controls, matched for age and body mass index, from Zonguldak, Turkey, were recruited to the study. Levels of 25-OHD, biochemical bone markers, and lumbar spine and femur BMD values were measured in all study participants. Lumbar spine and femur BMD values were significantly higher in underground workers compared with surface workers, but there was no significant difference in 25-OHD levels between the two groups. Duration of underground working, age, 25-OHD levels, cigarette consumption and dietary calcium intake were not correlated with BMD values. Underground physical working does not seem to be a significant risk factor for low 25-OHD levels or low BMD values.

  7. Low Bone Density

    Science.gov (United States)

    ... Density Exam/Testing › Low Bone Density Low Bone Density Low bone density is when your bone density ... people with normal bone density. Detecting Low Bone Density A bone density test will determine whether you ...

  8. Artificial Gravity: Effects on Bone Turnover

    Science.gov (United States)

    Heer, M.; Zwart, S /R.; Baecker, N.; Smith, S. M.

    2007-01-01

    The impact of microgravity on the human body is a significant concern for space travelers. Since mechanical loading is a main reason for bone loss, artificial gravity might be an effective countermeasure to the effects of microgravity. In a 21-day 6 head-down tilt bed rest (HDBR) pilot study carried out by NASA, USA, the utility of artificial gravity (AG) as a countermeasure to immobilization-induced bone loss was tested. Blood and urine were collected before, during, and after bed rest for bone marker determinations. Bone mineral density was determined by DXA and pQCT before and after bed rest. Urinary excretion of bone resorption markers (n-telopeptide and helical peptide) were increased from pre-bed rest, but there was no difference between the control and the AG group. The same was true for serum c-telopeptide measurements. Bone formation markers were affected by bed rest and artificial gravity. While bone-specific alkaline phosphatase tended to be lower in the AG group during bed rest (p = 0.08), PINP, another bone formation marker, was significantly lower in AG subjects than CN before and during bed rest. PINP was lower during bed rest in both groups. For comparison, artificial gravity combined with ergometric exercise was tested in a 14-day HDBR study carried out in Japan (Iwase et al. J Grav Physiol 2004). In that study, an exercise regime combined with AG was able to significantly mitigate the bed rest-induced increase in the bone resorption marker deoxypyridinoline. While further study is required to more clearly differentiate bone and muscle effects, these initial data demonstrate the potential effectiveness of short-radius, intermittent AG as a countermeasure to the bone deconditioning that occurs during bed rest and spaceflight. Future studies will need to optimize not only the AG prescription (intensity and duration), but will likely need to include the use of exercise or other combined treatments.

  9. Long-term bone loss after renal transportation. Comparison of immunosuppressive regimens

    International Nuclear Information System (INIS)

    Serial measurements of serum and urine markers of bone metabolism and of forearm bone density (BMD) by dual photon absorptiometry were performed in 22 patients undergoing renal transplantation in 1986. Patients were randomised to immunosuppression with (1) cyclosporin alone (CsA group, n = 10), (2) cyclosporin for 3 months followed by azathioprine-prednisone (CsA/AzP group, n = 3) or (3) long-term azathioprine-prednisone (LT AzP group, n = 9). As no reduction in bone mineral density (BMD) was noted in the first 6 months, groups 2 and 3 were considered together (AzP group, n = 12). Mean±SEM BMD fell by 19±2% at 36 months (n = 19,m p<0.01), with similar reductions seen in the CsA and AzP groups. At 60 months, BMD of the AzP group was 25±3% below baseline (p<0.01), while the CsA group were only 5±4% belov baseline (p = NS vs baseline, p<0.05 vs AzP group). The degree of reduction in BMD over 5 years correlated with total glucocorticoid dose (r = 0.63, p<0.05), but not with biochemical markers of bone turnover. Serum alkaline phosphatase fell post-transplant in patients treated with AzP, but not in the CsA group. These results demonstrate significant loss of forearm bone mineral with long-term follow-up after renal transplantation, but suggest that patients treated with cyclosporin monotherapy may be at lower risk of this complication. (au) (15 refs.)

  10. Long-term bone loss after renal transportation. Comparison of immunosuppressive regimens

    Energy Technology Data Exchange (ETDEWEB)

    Menzies, B.; Rigby, R.; Hawley, CJ.M.; Hardie, I.R. [Princess Alexandra Hospital, Renal Transplant Unit, Woolloongabba (Australia); McIntyre, H.D. [Mater Adult Hospital, Department of Medicine, South Brisbane (Australia); Perry-Keene, D.A. [Royal Brisbane Hospital, Department of Endocrinology, Herston, Queensland (Australia)

    1995-02-01

    Serial measurements of serum and urine markers of bone metabolism and of forearm bone density (BMD) by dual photon absorptiometry were performed in 22 patients undergoing renal transplantation in 1986. Patients were randomised to immunosuppression with (1) cyclosporin alone (CsA group, n = 10), (2) cyclosporin for 3 months followed by azathioprine-prednisone (CsA/AzP group, n = 3) or (3) long-term azathioprine-prednisone (LT AzP group, n = 9). As no reduction in bone mineral density (BMD) was noted in the first 6 months, groups 2 and 3 were considered together (AzP group, n = 12). Mean{+-}SEM BMD fell by 19{+-}2% at 36 months (n = 19,m p<0.01), with similar reductions seen in the CsA and AzP groups. At 60 months, BMD of the AzP group was 25{+-}3% below baseline (p<0.01), while the CsA group were only 5{+-}4% belov baseline (p = NS vs baseline, p<0.05 vs AzP group). The degree of reduction in BMD over 5 years correlated with total glucocorticoid dose (r = 0.63, p<0.05), but not with biochemical markers of bone turnover. Serum alkaline phosphatase fell post-transplant in patients treated with AzP, but not in the CsA group. These results demonstrate significant loss of forearm bone mineral with long-term follow-up after renal transplantation, but suggest that patients treated with cyclosporin monotherapy may be at lower risk of this complication. (au) (15 refs.).

  11. Involvement of immunologic and biochemical mechanisms in the pathogenesis of Tourette's syndrome

    OpenAIRE

    Landau, Yuval Eliahu; Steinberg, Tamar; Richmand, Brian; Leckman, James Frederick; Apter, Alan

    2011-01-01

    Tourette's syndrome is a neurodevelopmental disorder clinically characterized by multiple motor and phonic tics. It is likely that a neurobiological susceptibility to the disorder is established during development by the interaction of genetic, biochemical, immunological, and environmental factors. This study sought to investigate the possible correlation of several immunological and biochemical markers with Tourette's syndrome. Children with Tourette's syndrome attending a tertiary pediatric...

  12. Bone Metabolism in Adolescent Boys with Anorexia Nervosa

    Science.gov (United States)

    Misra, Madhusmita; Katzman, Debra K.; Cord, Jennalee; Manning, Stephanie J.; Mendes, Nara; Herzog, David B.; Miller, Karen K.; Klibanski, Anne

    2008-01-01

    Background: Anorexia nervosa (AN) is a condition of severe undernutrition associated with low bone mineral density (BMD) in adolescent females with this disorder. Although primarily a disease in females, AN is increasingly being recognized in males. However, there are few or no data regarding BMD, bone turnover markers or their predictors in adolescent AN boys. Hypotheses: We hypothesized that BMD would be low in adolescent boys with AN compared with controls associated with a decrease in bone turnover markers, and that the gonadal steroids, testosterone and estradiol, and levels of IGF-I and the appetite regulatory hormones leptin, ghrelin, and peptide YY would predict BMD and bone turnover markers. Methods: We assessed BMD using dual-energy x-ray absorptiometry and measured fasting testosterone, estradiol, IGF-I, leptin, ghrelin, and peptide YY and a bone formation (aminoterminal propeptide of type 1 procollagen) and bone resorption (N-telopeptide of type 1 collagen) marker in 17 AN boys and 17 controls 12–19 yr old. Results: Boys with AN had lower BMD and corresponding Z-scores at the spine, hip, femoral neck, trochanter, intertrochanteric region, and whole body, compared with controls. Height-adjusted measures (lumbar bone mineral apparent density and whole body bone mineral content/height) were also lower. Bone formation and resorption markers were reduced in AN, indicating decreased bone turnover. Testosterone and lean mass predicted BMD. IGF-I was an important predictor of bone turnover markers. Conclusion: AN boys have low BMD at multiple sites associated with decreased bone turnover markers at a time when bone mass accrual is critical for attainment of peak bone mass. PMID:18544623

  13. Measures of Biochemical Sociology

    Science.gov (United States)

    Snell, Joel; Marsh, Mitchell

    2008-01-01

    In a previous article, the authors introduced a new sub field in sociology that we labeled "biochemical sociology." We introduced the definition of a sociology that encompasses sociological measures, psychological measures, and biological indicators Snell & Marsh (2003). In this article, we want to demonstrate a research strategy that would assess…

  14. Biochemical Education in Brazil.

    Science.gov (United States)

    Vella, F.

    1988-01-01

    Described are discussions held concerning the problems of biochemical education in Brazil at a meeting of the Sociedade Brazileira de Bioquimica in April 1988. Also discussed are other visits that were made to universities in Brazil. Three major recommendations to improve the state of biochemistry education in Brazil are presented. (CW)

  15. The role of Molecular Markers in Improvement of Fruit Crops

    Directory of Open Access Journals (Sweden)

    Zahoor Ahmad BHAT

    2010-06-01

    Full Text Available Markers have been used over the years for the classification of plants. Markers are any trait of an organism that can be identified with confidence and relative easy, and can be followed in a mapping population on another hand markers be defined as heritable entities associated with the economically important trait under the control of polygenes. Morphological markers can be detected with naked eye (naked eye polymorphism or as difference in physical or chemical properties of the macromolecules. In other words, there are two types of genetic markers viz. morphological markers or naked eye polymorphism and non-morphological markers or molecular markers. Morphological markers include traits such as plant height, disease response, photoperiod, sensitivity, shape or colour of flowers, fruits or seeds etc. Molecular markers include biochemical constituents. Morphological markers have many limitations for being used as markers particularly in fruit crops because of long generation time and large size of fruit trees besides being influenced by environment. Consequently, molecular markers could be appropriate choice to study and preserve the diversity in any germplasm. Molecular markers have diverse applications in fruit crop improvement, particularly in the areas of genetic diversity and varietal identification studies, gene tagging, disease diagnostics, pedigree analysis, hybrid detection, sex differentiation and marker assisted selection.

  16. Additional first-trimester ultrasound markers.

    Science.gov (United States)

    Sonek, J; Nicolaides, K

    2010-09-01

    The first trimester (11-13 +6 weeks) ultrasound examination is useful for several reasons: determination of an accurate date of confinement, diagnostic purposes, and screening for fetal defects. Nuchal translucency measurement combined with maternal serum markers (free b-human chorionic gonadotropin and pregnancy-associated plasma protein A) is the mainstay of first-trimester screening for chromosomal defects. However, over the past decade additional ultrasound markers have been developed that improve the performance of this type of screening. The novel markers include evaluation of the nasal bone, fronto-maxillary angle measurement, and Doppler evaluations of the blood flow across the tricuspid valve and in the ductus venosus. PMID:20638573

  17. Bone tumor

    Science.gov (United States)

    ... physical exam. Tests that may be done include: Alkaline phosphatase blood level Bone biopsy Bone scan Chest x- ... also affect the results of the following tests: Alkaline phosphatase isoenzyme Blood calcium level Parathyroid hormone Blood phosphorus ...

  18. Osteoblast recruitment routes in human cancellous bone remodeling

    DEFF Research Database (Denmark)

    Kristensen, Helene B; Levin Andersen, Thomas; Marcussen, Niels;

    2014-01-01

    It is commonly proposed that bone forming osteoblasts recruited during bone remodeling originate from bone marrow perivascular cells, bone remodeling compartment canopy cells, or bone lining cells. However, an assessment of osteoblast recruitment during adult human cancellous bone remodeling is...... lacking. We addressed this question by quantifying cell densities, cell proliferation, osteoblast differentiation markers, and capillaries in human iliac crest biopsy specimens. We found that recruitment occurs on both reversal and bone-forming surfaces, as shown by the cell density and osterix levels on...

  19. 核素骨显像联合肿瘤标志物检测在肺癌骨转移诊断中的价值%Evaluation of tumor marker and ECT in diagnosis of bone metastasis in lung cancer

    Institute of Scientific and Technical Information of China (English)

    段玉龙; 解洪泉; 范向辉; 赵诚; 丁朝鹏

    2009-01-01

    Objective To evaluate the value of tumor markers(CEA NSE cYFRA 21-1)and ECT in diagnosis of bone metastasis jn lung cancer.Methods Two hundred and sixty-three patients with lung cancer were examined by radionuclied bone imaging and serum CEA.NSE and CYFRA 21-1 in the sernm by ELECSYS 2010.Results The sensitivity,differential,veracity of tumor markers(CEA,NSE,CYFRA 21-1)and ECT were 88.9%(152/171),96.7%(89/92),91.6%(241/263),and it was 65.5%(112/171),87.0%(80/92),73.0%(192/263)of SPECT.It had significant difference(P<0.01)between tumor markers (CEA,NSE,CYFRA21-1) and ECT vs SPECT.Conclusions ECT and tumor markers has an important value in diagnosis of bone metastasis in lung cancer.%目的 探讨放射性核素骨显像(ECT)与肿瘤标志物CEA、NSE和CYFRA 21-1检测在肺癌骨转移诊断中的价值.方法 时263例肺癌患者进行单光子发射计算机断层仪(SPECT)全身骨显像的同时,采用罗氏电化学发光免疫系统检测其血清CEA、CYFRA21-1、NSE肿瘤标志物水平.结果 ECT联合CEA+NSE+CYFRA21-1检测和ECT诊断肺癌骨转移的敏感性、特异性、准确性分别为88.9%(152/171)和65.5%(112/171)、96.7%(89/92)和87.0%(80/92)、91.6%(241/263)和73.0%(192/263),ECT联合CEA+NSE+CYFRA 21-1检测优于单独SPECT检查(P<0.01).结论 核素骨显像与肿瘤标志物联合检测在肺癌骨转移诊断中有较高临床价值.

  20. Clinical Guidelines for Management of Bone Health in Rett Syndrome Based on Expert Consensus and Available Evidence

    Science.gov (United States)

    Jefferson, Amanda; Leonard, Helen; Siafarikas, Aris; Woodhead, Helen; Fyfe, Sue; Ward, Leanne M.; Munns, Craig; Motil, Kathleen; Tarquinio, Daniel; Shapiro, Jay R.; Brismar, Torkel; Ben-Zeev, Bruria; Bisgaard, Anne-Marie; Coppola, Giangennaro; Ellaway, Carolyn; Freilinger, Michael; Geerts, Suzanne; Humphreys, Peter; Jones, Mary; Lane, Jane; Larsson, Gunilla; Lotan, Meir; Percy, Alan; Pineda, Mercedes; Skinner, Steven; Syhler, Birgit; Thompson, Sue; Weiss, Batia; Witt Engerström, Ingegerd; Downs, Jenny

    2016-01-01

    Objectives We developed clinical guidelines for the management of bone health in Rett syndrome through evidence review and the consensus of an expert panel of clinicians. Methods An initial guidelines draft was created which included statements based upon literature review and 11 open-ended questions where literature was lacking. The international expert panel reviewed the draft online using a 2-stage Delphi process to reach consensus agreement. Items describe the clinical assessment of bone health, bone mineral density assessment and technique, and pharmacological and non-pharmacological interventions. Results Agreement was reached on 39 statements which were formulated from 41 statements and 11 questions. When assessing bone health in Rett syndrome a comprehensive assessment of fracture history, mutation type, prescribed medication, pubertal development, mobility level, dietary intake and biochemical bone markers is recommended. A baseline densitometry assessment should be performed with accommodations made for size, with the frequency of surveillance determined according to individual risk. Lateral spine x-rays are also suggested. Increasing physical activity and initiating calcium and vitamin D supplementation when low are the first approaches to optimizing bone health in Rett syndrome. If individuals with Rett syndrome meet the ISCD criterion for osteoporosis in children, the use of bisphosphonates is recommended. Conclusion A clinically significant history of fracture in combination with low bone densitometry findings is necessary for a diagnosis of osteoporosis. These evidence and consensus-based guidelines have the potential to improve bone health in those with Rett syndrome, reduce the frequency of fractures, and stimulate further research that aims to ameliorate the impacts of this serious comorbidity. PMID:26849438

  1. Clinical Guidelines for Management of Bone Health in Rett Syndrome Based on Expert Consensus and Available Evidence.

    Directory of Open Access Journals (Sweden)

    Amanda Jefferson

    Full Text Available We developed clinical guidelines for the management of bone health in Rett syndrome through evidence review and the consensus of an expert panel of clinicians.An initial guidelines draft was created which included statements based upon literature review and 11 open-ended questions where literature was lacking. The international expert panel reviewed the draft online using a 2-stage Delphi process to reach consensus agreement. Items describe the clinical assessment of bone health, bone mineral density assessment and technique, and pharmacological and non-pharmacological interventions.Agreement was reached on 39 statements which were formulated from 41 statements and 11 questions. When assessing bone health in Rett syndrome a comprehensive assessment of fracture history, mutation type, prescribed medication, pubertal development, mobility level, dietary intake and biochemical bone markers is recommended. A baseline densitometry assessment should be performed with accommodations made for size, with the frequency of surveillance determined according to individual risk. Lateral spine x-rays are also suggested. Increasing physical activity and initiating calcium and vitamin D supplementation when low are the first approaches to optimizing bone health in Rett syndrome. If individuals with Rett syndrome meet the ISCD criterion for osteoporosis in children, the use of bisphosphonates is recommended.A clinically significant history of fracture in combination with low bone densitometry findings is necessary for a diagnosis of osteoporosis. These evidence and consensus-based guidelines have the potential to improve bone health in those with Rett syndrome, reduce the frequency of fractures, and stimulate further research that aims to ameliorate the impacts of this serious comorbidity.

  2. Bone and energy metabolism parameters in professional cyclists during the Giro d'Italia 3-weeks stage race.

    Directory of Open Access Journals (Sweden)

    Giovanni Lombardi

    Full Text Available Cycling is a not weight-bearing activity and is known to induce bone resorption. Stage races are really strenuous endurance performances affecting the energy homeostasis. The recently highlighted link, in the co-regulation of bone and energy metabolism, demonstrates a central role for the equilibrium between carboxylated and undercarboxylated forms of osteocalcin. Aim of this study was to understand the acute physiological responses to a cycling stage race in terms of bone turnover and energy metabolism and the possible co-regulative mechanisms underlying their relationship. We studied nine professional cyclists engaged in 2011 Giro d'Italia stage race. Pre-analytical and analytical phases tightly followed academic and anti-doping authority's recommendations. Bone and energy metabolism markers (bone alkaline phosphatase, tartrate-resistant acid phosphatase 5b, total and undercarboxylated osteocalcin, leptin and adiponectin and related hormones (cortisol and testosterone were measured, by Sandwich Enzyme Immunoassays, at days -1 (pre-race, 12 and 22 during the race. The power output and the energy expenditure (mean and accumulated were derived and correlated with the biochemical indexes. During the race, bone metabolism showed that an unbalance in behalf of resorption, which is enhanced, occurred along with a relative increase in the concentration of the undercarboxylated form of osteocalcin that was indirectly related to the enhanced energy expenditure, through adipokines modifications, with leptin decrease (high energy consumption and adiponectin increase (optimization of energy expenditure. The exertion due to heavy effort induced a decrease of cortisol, while testosterone levels resulted unchanged. In conclusion, during a 3-weeks stage race, bone metabolism is pushed towards resorption. A possible relationship between the bone and the energy metabolisms is suggested by the relative correlations among absolute and relative concentrations

  3. Inca bones at asterion

    Directory of Open Access Journals (Sweden)

    Prashant E Natekar

    2014-01-01

    Full Text Available Background: Surgical approach towards asterion has to be done with caution as many surgeons are unfamiliar with the anatomical variations. The asterion corresponds to the site of the posterolateral (mastoid fontanelle of the neonatal skull which closes at the end of the first year. Inca bones provide information as markers for various diseases, and can mislead in the diagnosis of fractures. Observation and Results: 150 dry skull bones from the Department of Anatomy at Goa Medical College, India and other neighboring medical colleges by examining the asterion, and its sutural articulations with parietal, temporal and occipital bones and also anatomical variations if any in adults. Discussion: The anatomical landmarks selected must be reliable and above all easy to identify. Bony structures are more suitable than soft tissue or cartilaginous landmarks because of their rigid and reliable location. Presence of these bones provides false impressions of fractures or the fractures may be interpreted for inca bones especially in the region of asterion either radiologically or clinically which may lead to complications during burr hole surgeries.

  4. Periostin action in bone.

    Science.gov (United States)

    Bonnet, Nicolas; Garnero, Patrick; Ferrari, Serge

    2016-09-01

    Periostin is a highly conserved matricellular protein that shares close homology with the insect cell adhesion molecule fasciclin 1. Periostin is expressed in a broad range of tissues including the skeleton, where it serves both as a structural molecule of the bone matrix and a signaling molecule through integrin receptors and Wnt-beta-catenin pathways whereby it stimulates osteoblast functions and bone formation. The development of periostin null mice has allowed to elucidate the crucial role of periostin on dentinogenesis and osteogenesis, as well as on the skeletal response to mechanical loading and parathyroid hormone. The use of circulating periostin as a potential clinical biomarker has been explored in different non skeletal conditions. These include cancers and more specifically in the metastasis process, respiratory diseases such as asthma, kidney failure, renal injury and cardiac infarction. In postmenopausal osteoporosis, serum levels have been shown to predict the risk of fracture-more specifically non-vertebral- independently of bone mineral density. Because of its preferential localization in cortical bone and periosteal tissue, it can be speculated that serum periostin may be a marker of cortical bone metabolism, although additional studies are clearly needed. PMID:26721738

  5. The response of bone to unloading

    Science.gov (United States)

    Bikle, D. D.; Halloran, B. P.

    1999-01-01

    Skeletal unloading leads to decreased bone formation and decreased bone mass. Bone resorption is uncoupled from bone formation, contributing to the bone loss. During spaceflight bone is lost principally from the bones most loaded in the 1-g environment, and some redistribution of bone from the lower extremities to the head appears to take place. Although changes in calcitropic hormones have been demonstrated during skeletal unloading (PTH and 1,25(OH)2D decrease), it remains unclear whether such changes account for or are in response to the changes in bone formation and resorption. Bed rest studies with human volunteers and hindlimb elevation studies with rats have provided useful data to help explain the changes in bone formation during spaceflight. These models of skeletal unloading reproduce a number of the conditions associated with microgravity, and the findings from such studies confirm many of the observations made during spaceflight. Determining the mechanism(s) by which loading of bone is sensed and translated into a signal(s) controlling bone formation remains the holy grail in this field. Such investigations couple biophysics to biochemistry to cell and molecular biology. Although studies with cell cultures have revealed biochemical responses to mechanical loads comparable to that seen in intact bone, it seems likely that matrix-cell interactions underlie much of the mechanocoupling. The role for systemic hormones such as PTH, GH, and 1,25(OH)2D compared to locally produced factors such as IGF-I, PTHrP, BMPs, and TGF-beta in modulating the cellular response to load remains unclear. As the mechanism(s) by which bone responds to mechanical load with increased bone formation are further elucidated, applications of this knowledge to other etiologies of osteoporosis are likely to develop. Skeletal unloading provides a perturbation in bone mineral homeostasis that can be used to understand the mechanisms by which bone mineral homeostasis is maintained, with

  6. New insights to the role of aryl hydrocarbon receptor in bone phenotype and in dioxin-induced modulation of bone microarchitecture and material properties

    International Nuclear Information System (INIS)

    Bone is a target for high affinity aryl hydrocarbon receptor (AHR) ligands, such as dioxins. Although bone morphology, mineral density and strength are sensitive endpoints of dioxin toxicity, less is known about effects on bone microarchitecture and material properties. This study characterizes TCDD-induced modulations of bone tissue, and the role of AHR in dioxin-induced bone toxicity and for normal bone phenotype. Six AHR-knockout (Ahr−/−) and wild-type (Ahr+/+) mice of both genders were exposed to TCDD weekly for 10 weeks, at a total dose of 200 μg/kg bw. Bones were examined with micro-computed tomography, nanoindentation and biomechanical testing. Serum levels of bone remodeling markers were analyzed, and the expression of genes related to osteogenic differentiation was profiled using PCR array. In Ahr+/+ mice, TCDD-exposure resulted in harder bone matrix, thinner and more porous cortical bone, and a more compact trabecular bone compartment. Bone remodeling markers and altered expression of a number of osteogenesis related genes indicated imbalanced bone remodeling. Untreated Ahr−/− mice displayed a slightly modified bone phenotype as compared with untreated Ahr+/+ mice, while TCDD exposure caused only a few changes in bones of Ahr−/− mice. Part of the effects of both TCDD-exposure and AHR-deficiency were gender dependent. In conclusion, exposure of adult mice to TCDD resulted in harder bone matrix, thinner cortical bone, mechanically weaker bones and most notably, increased trabecular bone volume fraction in Ahr+/+ mice. AHR is involved in bone development of a normal bone phenotype, and is crucial for manifestation of TCDD-induced bone alterations. - Highlights: • TCDD disrupts bone remodeling resulting in altered cortical and trabecular bone. • In trabecular bone an anabolic effect is observed. • Cortical bone is thinner, more porous, harder, stiffer and mechanically weaker. • AHR ablation results in increased trabecular bone and softer

  7. Vitamin D and estrogen receptor-alpha genotype and indices of bone mass and bone turnover in Danish girls

    DEFF Research Database (Denmark)

    Cusack, S.; Mølgaard, C.; Michaelsen, K. F.;

    2006-01-01

    environmental factors. VDR genotypes had no effect on bone turnover markers. XX and PP ER alpha genotypes were associated (P <0.05) with reduced levels of urinary pyridinium cross-links, whereas serum osteocalcin was similar among genotypes. These findings suggest that the rate of bone resorption was influenced...... (VDR) (FokI, TaqI) and estrogen receptor-alpha (ER alpha) (PvuII, XbaI), and bone mineral density (BMD), bone mineral content (BMC), and markers of bone turnover in 224 Danish girls aged 11-12 years. BMD and BMC were measured by dual-energy X-ray absorptiometry. Serum osteocalcin, 25(OH)D, and...

  8. Histologic diagnosis of metabolic bone diseases: bone histomorphometry

    Directory of Open Access Journals (Sweden)

    L. Dalle Carbonare

    2011-09-01

    Full Text Available Histomorphometry or quantitative histology is the analysis on histologic sections of bone resorption parameters, formation and structure. It is the only technique that allows a dynamic evaluation of the activity of bone modelling after labelling with tetracycline. Moreover, the new measurement procedures through the use of the computer allow an assessment of bone microarchitecture too. Histomorphometric bone biopsy is a reliable and well-tolerated procedure. Complications are reported only in 1% of the subjects (hematoma, pain, transient neuralgia. Histomorphometry is used to exclude or confirm the diagnosis of osteomalacia. It is employed in the evaluation of bone damage associated with particular treatments (for example, anticonvulsants or in case of rare bone diseases (osteogenesis imperfecta, systemic mastocytosis. It is also an essential approach when clinical, biochemical and other diagnostic data are not consistent. Finally, it is a useful method to understand the pathophysiologic mechanisms of drugs. The bone sample is taken at the level of iliac crest under local anesthesia. It is then put into methyl-metacrilate resin where the sections are prepared for the microscopic analysis of the various histomorphometric parameters.

  9. Multiplexing oscillatory biochemical signals.

    Science.gov (United States)

    de Ronde, Wiet; ten Wolde, Pieter Rein

    2014-04-01

    In recent years it has been increasingly recognized that biochemical signals are not necessarily constant in time and that the temporal dynamics of a signal can be the information carrier. Moreover, it is now well established that the protein signaling network of living cells has a bow-tie structure and that components are often shared between different signaling pathways. Here we show by mathematical modeling that living cells can multiplex a constant and an oscillatory signal: they can transmit these two signals simultaneously through a common signaling pathway, and yet respond to them specifically and reliably. We find that information transmission is reduced not only by noise arising from the intrinsic stochasticity of biochemical reactions, but also by crosstalk between the different channels. Yet, under biologically relevant conditions more than 2 bits of information can be transmitted per channel, even when the two signals are transmitted simultaneously. These observations suggest that oscillatory signals are ideal for multiplexing signals. PMID:24685537

  10. Prognostic markers of canine pyometra

    Directory of Open Access Journals (Sweden)

    M.C. Sant'Anna

    2014-12-01

    Full Text Available The pyometra is a disease that affects middle age and elderly female dogs during diestrus. Hormonal, microbiological, biochemical and hematological aspects are well described. However, few studies have evaluated the role of each in the prognosis of canine pyometra. The aim of this study was to identify markers associated with clinical worsening of dogs with pyometra. We prospectively evaluated 80 dogs with pyometra treated surgically. Group 1 consisted of dogs that were discharged within 48 hours after surgery and Group 2 consisted of those who required prolonged hospitalization or died. The findings of hematological, biochemical and blood lactate levels were compared between groups and variables such as bacterial multidrug resistance, systemic inflammatory response syndrome (SIRS, hyperlactatemia and increased creatinine were analyzed through the dispersion of frequencies between groups. Among the variables studied, the presence of SIRS and elevated serum creatinine >2.5mg/mL were effective in predicting the worsening of the disease and can be used as prognostic markers of canine pyometra.

  11. Multi-generational drinking of bottled low mineral water impairs bone quality in female rats.

    Directory of Open Access Journals (Sweden)

    Zhiqun Qiu

    Full Text Available Because of reproductions and hormone changes, females are more sensitive to bone mineral loss during their lifetime. Bottled water has become more popular in recent years, and a large number of products are low mineral water. However, research on the effects of drinking bottled low mineral water on bone health is sparse.To elucidate the skeletal effects of multi-generational bottled water drinking in female rats.Rats continuously drank tap water (TW, bottled natural water (bNW, bottled mineralized water (bMW, or bottled purified water (bPW for three generations.The maximum deflection, elastic deflection, and ultimate strain of the femoral diaphysis in the bNW, bMW, and bPW groups and the fracture strain in the bNW and bMW groups were significantly decreased. The tibiae calcium levels in both the bNW and bPW groups were significantly lower than that in the TW group. The tibiae and teeth magnesium levels in both the bNW and bPW groups were significantly lower than those in the TW group. The collagen turnover markers PICP (in both bNW and bPW groups were significantly lower than that in the TW group. In all three low mineral water groups, the 1,25-dihydroxy-vitamin D levels were significantly lower than those in the TW group.Long-term drinking of low mineral water may disturb bone metabolism and biochemical properties and therefore weaken biomechanical bone properties in females. Drinking tap water, which contains adequate minerals, was found to be better for bone health. To our knowledge, this is the first report on drinking bottled low mineral water and female bone quality on three generation model.

  12. Volume-Based F-18 FDG PET/CT Imaging Markers Provide Supplemental Prognostic Information to Histologic Grading in Patients With High-Grade Bone or Soft Tissue Sarcoma

    DEFF Research Database (Denmark)

    Andersen, Kim Francis; Fuglo, Hanna Maria; Rasmussen, Sine Hvid;

    2015-01-01

    The aim of the study is to assess the prognostic value of different volume-based calculations of tumor metabolic activity in the initial assessment of patients with high-grade bone sarcomas (BS) and soft tissue sarcomas (STS) using F-18 FDG PET/CT.A single-site, retrospective study from 2002 to...

  13. Normal tempo of bone formation in Turner syndrome despite signs of accelerated bone resorption

    DEFF Research Database (Denmark)

    Cleemann, Line Hartvig; Holm, Kirsten Bagge; Kobbernagel, Hanne;

    2011-01-01

    Aims: To evaluate area bone mineral density (aBMD) and volumetric BMD (vBMD) by dual-energy X-ray absorptiometry, and relations to bone markers and hormones in adolescent women with Turner syndrome (TS). Methods: Cross-sectional study in TS patients (n = 37, 16.7 ± 3.4 years) and control group (n...

  14. Normal Tempo of Bone Formation in Turner Syndrome despite Signs of Accelerated Bone Resorption

    DEFF Research Database (Denmark)

    Cleemann, Line; Holm, Kirsten; Kobbernagel, Hanne;

    2011-01-01

    Aims: To evaluate area bone mineral density (aBMD) and volumetric BMD (vBMD) by dual-energy X-ray absorptiometry, and relations to bone markers and hormones in adolescent women with Turner syndrome (TS). Methods: Cross-sectional study in TS patients (n = 37, 16.7 ± 3.4 years) and control group (n...

  15. Calcium phosphate cement delivering zoledronate decreases bone turnover rate and restores bone architecture in ovariectomized rats

    International Nuclear Information System (INIS)

    Patients sustaining bony fractures frequently require the application of bone graft substitutes to fill the bone defects. In the meantime, anti-osteoporosis drugs may be added in bone fillers to treat osteoporosis, especially in postmenopausal women and the elderly. The effects of zoledronate-impregnated calcium phosphate cement (ZLN/CPC) on ovariectomized (OVX) rats were evaluated. OVX rats were implanted with ZLN/CPC, containing 0.025 mg ZLN in the greater omentum. Afterward the clinical sign of toxicity was recorded for eight weeks. The rats were sacrificed and blood samples were collected for hematology and serum bone turnover markers analyses. The four limbs of the rats were harvested and micro-computer tomography (micro-CT) scanning and bone ash analyses were performed. No clinical toxicity was observed in the treated rats. Compared to the OVX rats, levels of bone resorption markers (fragments of C-telopeptides of type I collagen) and bone formation markers (alkaline phosphatase and osteocalcin) decreased significantly in the treated rats. Osteopontin, which mediates the anchoring of osteoclasts to the mineral matrix of bones, also decreased significantly. Micro-CT scanning and histologic examinations of the distal femoral metaphyses showed that the cancellous bone architectures were restored, with a concomitant decrease in bone porosity. The bone mineral content in the bone ashes also increased significantly. This study indicates that ZLN-impregnated CPC reduces bone turnover rate and restores bone architecture in OVX rats. CPC may be an appropriate carrier to deliver drugs to treat osteoporosis, and this approach may also reduce rates of post-dosing symptoms for intravenous ZLN delivery. (paper)

  16. Macrophage serum markers in pneumococcal bacteremia

    DEFF Research Database (Denmark)

    Møller, Holger Jon; Moestrup, Søren K; Weis, Nina;

    2006-01-01

    probability of survival when sCD163 and CRP were known (p = .25). CONCLUSIONS: Macrophage marker response in pneumococcal bacteremia was compromised in old age. In patients <75 yrs old, sCD163 was superior to other markers, including C-reactive protein, in predicting fatal disease outcome....... pneumococcal bacteremia. DESIGN: Observational cohort study. SETTING: Five university hospitals in Denmark. PATIENTS: A total of 133 patients with Streptococcus pneumoniae bacteremia (positive blood culture) and 133 age- and gender-matched controls. INTERVENTIONS: Samples were collected for biochemical...

  17. Current perspectives on bisphosphonate treatment in Paget’s disease of bone

    Directory of Open Access Journals (Sweden)

    Wat WZM

    2014-11-01

    Full Text Available Winnie Zee Man Wat Department of Medicine, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong Abstract: Paget’s disease of bone is a chronic metabolic bone disease with focal increase in bone turnover. The exact etiology of the disease is uncertain, although genetic and environmental factors are believed to be important. Bisphosphonate is the main class of medication being used to control disease activity via its antiresorptive effect. This review discusses the controversies concerning the use of bisphosphonates in the treatment of Paget’s disease of bone, the efficacy of different bisphosphonates in controlling disease activity, and the possible rare side effects of bisphosphonates. Symptoms are the main indication for treatment in Paget’s disease of bone. As treatment benefits in asymptomatic individuals remain controversial and nonevidence based, the decision to treat these patients should be individualized to their risk and benefit profiles. There are several trials conducted to evaluate and compare the efficacy of different regimes of bisphosphonates for treating Paget’s disease of bone. Most trials used biochemical markers rather than clinical symptoms or outcomes as parameters for comparison. Zoledronate is an attractive option as it can achieve high rates of biochemical remission and sustain long duration of suppression by a single dose. Atypical femoral fracture and osteonecrosis of the jaw are two rare and severe side effects reported, possibly related to the use of bisphosphonates in patients with osteoporosis and malignancy-induced hypercalcemia. As the regimes of bisphosphonates used for treating Paget’s disease of bone are different from those two diseases, the risks of developing these two possible side effects are expected to be very low, although this remains unknown. Vitamin D and calcium supplement should be given to patients at risk of vitamin D insufficiency when given zoledronate, as symptomatic

  18. [Bone diseases].

    Science.gov (United States)

    Uebelhart, Brigitte; Rizzoli, René

    2016-01-13

    Calcium intake shows a small impact on bone mineral density and fracture risk. Denosumab is a more potent inhibitor of bone resorption than zoledronate. Abaloparatide, PTHrP analog, increases bone mineral density and decreases fracture incidence. Teriparatide could be delivered via a transdermic device. Romosozumab and odanacatib improve calculated bone strength. Sequential or combined treatments with denosumab and teriparatide could be of interest, but not denosumab followed by teriparatide. Fibrous dysplasia, Paget disease and hypophosphatasia are updated, as well as atypical femoral fracture and osteonecrosis of the jaw. PMID:26946704

  19. Prognostic Indicators of Changes in Bone Density Measures in Adolescent Girls with Anorexia Nervosa-II

    OpenAIRE

    Misra, Madhusmita; Prabhakaran, Rajani; Miller, Karen K.; Goldstein, Mark A.; Mickley, Diane; Clauss, Laura; Lockhart, Patrice; Cord, Jennalee; Herzog, David B.; Katzman, Debra K.; Klibanski, Anne

    2007-01-01

    Introduction: Adolescents with anorexia nervosa (AN) have low bone mineral density (BMD). Baseline predictors of temporal BMD changes (ΔBMD) in AN, including 1) gastrointestinal peptides regulating food intake and appetite that have been related to bone metabolism and 2) bone turnover markers, have not been well characterized. We hypothesized that baseline levels of nutritionally regulated hormones and of bone turnover markers would predict ΔBMD overall.

  20. A study of relationships between bone-related vitamins and minerals, related risk markers, and subsequent mortality in older British people: the National Diet and Nutrition Survey of People Aged 65 Years and Over

    OpenAIRE

    Bates, C. J.; Hamer, M.; Mishra, G.D.

    2011-01-01

    Summary Follow-up of a British national survey of older people found that in men, all-cause mortality was predicted by baseline plasma concentrations of phosphorus, albumin, creatinine and α1-antichymotrypsin, and food energy intake and in women by plasma alkaline phosphatase, creatinine, α1-antichymotrypsin, 25-hydroxy-vitamin D (marginally), and phosphorus intake. Introduction Predictive power, for all-cause mortality, of bone-related vitamin and mineral indices and intakes, measured at bas...

  1. Biochemical Hypermedia: Galactose Metabolism.

    Directory of Open Access Journals (Sweden)

    J.K. Sugai

    2013-05-01

    Full Text Available Introduction: Animations of biochemical processes and virtual laboratory environments lead to true molecular simulations. The use of interactive software’s in education can improve cognitive capacity, better learning and, mainly, it makes information acquisition easier. Material and Methods: This work presents the development of a biochemical hypermedia to understanding of the galactose metabolism. It was developed with the help of concept maps, ISIS Draw, ADOBE Photoshop and FLASH MX Program. Results and Discussion: A step by step animation process shows the enzymatic reactions of galactose conversion to glucose-1-phosphate (to glycogen synthesis, glucose-6-phosphate (glycolysis intermediary, UDP-galactose (substrate to mucopolysaccharides synthesis and collagen’s glycosylation. There are navigation guide that allow scrolling the mouse over the names of the components of enzymatic reactions of via the metabolism of galactose. Thus, explanatory text box, chemical structures and animation of the actions of enzymes appear to navigator. Upon completion of the module, the user’s response to the proposed exercise can be checked immediately through text box with interactive content of the answer. Conclusion: This hypermedia was presented for undergraduate students (UFSC who revealed that it was extremely effective in promoting the understanding of the theme.

  2. Nuclear factor erythroid-2 related factor 2 overexpressed mesenchymal stem cells transplantation, improves renal function, decreases injuries markers and increases repair markers in glycerol-induced Acute kidney injury rats

    Science.gov (United States)

    Zhaleh, Fateme; Amiri, Fatemeh; Mohammadzadeh-Vardin, Mohammad; Bahadori, Marzie; Harati, Mitra Dehghan; Roudkenar, Mehryar Habibi; Saki, Sasan

    2016-01-01

    Objective(s): Recently cell therapy is a promising therapeutic modality for many types of disease including acute kidney injury (AKI). Due to the unique biological properties, mesenchymal stem cells (MSCs) are attractive cells in this regard. This study aims to transplant MSCs equipped with nuclear factor E2-related factor 2 (Nrf2) in rat experimental models of acute kidney and evaluate regeneration potential of injured kidney especially expression of injury and repaired biomarkers. Materials and methods: Nrf2 was overexpressed in bone marrow-derived MSCs by pcDNA.3.1 plasmid. AKI was induced using glycerol in rat models. The regenerative potential of Nrf2-overexpressed MSCs was evaluated in AKI-Induced animal models using biochemical and histological methods after transplantation. Expression of repaired genes, AQP1 and CK-18, as well as injury markers, Kim-1 and Cystatin C, was also assayed in engrafted kidney sections. Results: Our results revealed that transplantation of Nrf2-overexpressed MSCs into AKI-induced rats decreased blood urea nitrogen and creatinine and ameliorated kidney regeneration throughout 14 days. Upregulation of repaired markers and downregulation of injury markers were considerable 14 days after transplantation. Conclusions: Overexpression of Nrf2 in MSCs suggests a new strategy to increase efficiency of MSC-based cell therapy in AKI. PMID:27114803

  3. Bone marrow origin of Ia molecules purified from epidermal cells

    International Nuclear Information System (INIS)

    Using radiation bone marrow chimeras, we have shown that Ia molecules purified from epidermal cell preparations of the mouse reflect the Ia phenotype of the bone marrow donor. This result strongly suggests that Ia molecules are synthesized by a bone-marrow-derived cell in the epidermis. Furthermore, results of peptide map analysis of immunoprecipitated biosynthetically labeled Ia suggest that the Ia molecules found in skin are identical to those found on B lymphocytes. These results support biochemical as well as serologic identity

  4. Talking Bones.

    Science.gov (United States)

    Johnson, Jaclyn; Kassing, Sharon

    2002-01-01

    Describes cooperation with the Saint Louis Zoo to provide opportunities for elementary school students to learn about bones, how animals move, what they eat, and how much they grow. Uses biofacts which include bones, skulls, and other parts to make the laboratory a hands-on experience for students. (YDS)

  5. Establishment of a murine model for radiation-induced bone loss using micro-computed tomography in adult C3H/HeN mice

    International Nuclear Information System (INIS)

    Bone changes are common sequela of radiation therapy for cancer. The purpose of this study was to establish an experimental model of radiation-induced bone loss in adult mice using micro-computed tomography (µCT). The extent of changes following 2 Gy gamma irradiation (2 Gy/min) was studied at 4, 8, 12 or 16 weeks after exposure. Adult mice that received 1, 2, 4 or 6 Gy of gamma-rays were examined 12 weeks after irradiation. Tibiae were analyzed using µCT. Serum markers and biomechanical properties were measured and the osteoclast surface was examined. A significant loss of trabecular bone in tibiae was evident 12 weeks after exposure. Measurements performed after irradiation showed a dose-related decrease in trabecular bone volume fraction (BV/TV) and bone mineral density (BMD), respectively. The best-fitting dose-response curves were linear-quadratic. Taking the controls into accounts, the lines of best fit were as follows: BV/TV (%)= -0.071D(2)-1.799D+18.835 (r (2)=0.968, D=dose in Gy) and BMD (mg/cm(3)) = -3.547D(2)-14.8D+359.07 (r (2)=0.986, D=dose in Gy). Grip strength and body weight did not differ among the groups. No dose-dependent differences were apparent among the groups with regard to mechanical and anatomical properties of tibia, serum biochemical markers and osteoclast activity. The findings provide the basis required for better understanding of the results that will be obtained in any further studies of radiation-induced bone responses. (author)

  6. Bone densitometry

    DEFF Research Database (Denmark)

    Ravn, Pernille; Alexandersen, P; Møllgaard, A

    1999-01-01

    The bisphosphonates have been introduced as alternatives to hormone replacement therapy (HRT) for the treatment and prevention of postmenopausal osteoporosis. The expected increasing application in at clinical practice demands cost-effective and easily handled methods to monitor the effect on bone....... The weak response at the distal forearm during antiresorptive treatment has restricted the use of bone densitometry at this region. We describe a new model for bone densitometry at the distal forearm, by which the response obtained is comparable to the response in other regions where bone densitometry...... is much more expensive and technically complicated. By computerized iteration of single X-ray absorptiometry forearm scans we defined a region with 65% trabecular bone. The region was analyzed in randomized, double-masked, placebo- controlled trials: a 2-year trial with alendronate (n = 69), a 1-year...

  7. Parallel mechanisms suppress cochlear bone remodeling to protect hearing.

    Science.gov (United States)

    Jáuregui, Emmanuel J; Akil, Omar; Acevedo, Claire; Hall-Glenn, Faith; Tsai, Betty S; Bale, Hrishikesh A; Liebenberg, Ellen; Humphrey, Mary Beth; Ritchie, Robert O; Lustig, Lawrence R; Alliston, Tamara

    2016-08-01

    Bone remodeling, a combination of bone resorption and formation, requires precise regulation of cellular and molecular signaling to maintain proper bone quality. Whereas osteoblasts deposit and osteoclasts resorb bone matrix, osteocytes both dynamically resorb and replace perilacunar bone matrix. Osteocytes secrete proteases like matrix metalloproteinase-13 (MMP13) to maintain the material quality of bone matrix through perilacunar remodeling (PLR). Deregulated bone remodeling impairs bone quality and can compromise hearing since the auditory transduction mechanism is within bone. Understanding the mechanisms regulating cochlear bone provides unique ways to assess bone quality independent of other aspects that contribute to bone mechanical behavior. Cochlear bone is singular in its regulation of remodeling by expressing high levels of osteoprotegerin. Since cochlear bone expresses a key PLR enzyme, MMP13, we examined whether cochlear bone relies on, or is protected from, osteocyte-mediated PLR to maintain hearing and bone quality using a mouse model lacking MMP13 (MMP13(-/-)). We investigated the canalicular network, collagen organization, lacunar volume via micro-computed tomography, and dynamic histomorphometry. Despite finding defects in these hallmarks of PLR in MMP13(-/-) long bones, cochlear bone revealed no differences in these markers, nor hearing loss as measured by auditory brainstem response (ABR) or distortion product oto-acoustic emissions (DPOAEs), between wild type and MMP13(-/-) mice. Dynamic histomorphometry revealed abundant PLR by tibial osteocytes, but near absence in cochlear bone. Cochlear suppression of PLR corresponds to repression of several key PLR genes in the cochlea relative to long bones. These data suggest that cochlear bone uniquely maintains bone quality and hearing independent of MMP13-mediated osteocytic PLR. Furthermore, the cochlea employs parallel mechanisms to inhibit remodeling by osteoclasts and osteoblasts, and by

  8. Metabolic bone disease in the preterm infant: Current state and future directions.

    Science.gov (United States)

    Rehman, Moghis Ur; Narchi, Hassib

    2015-09-26

    Neonatal osteopenia is an important area of interest for neonatologists due to continuing increased survival of preterm infants. It can occur in high-risk infants such as preterm infants, infants on long-term diuretics or corticosteroids, and those with neuromuscular disorders. Complications such as rickets, pathological fractures, impaired respiratory function and poor growth in childhood can develop and may be the first clinical evidence of the condition. It is important for neonatologists managing such high-risk patients to regularly monitor biochemical markers for evidence of abnormal bone turnover and inadequate mineral intake in order to detect the early phases of impaired bone mineralization. Dual-energy X-ray absorptiometry has become an increasingly used research tool for assessing bone mineral density in children and neonates, but more studies are still needed before it can be used as a useful clinical tool. Prevention and early detection of osteopenia are key to the successful management of this condition and oral phosphate supplements should be started as soon as is feasible. PMID:26413483

  9. Bone regeneration and stem cells

    DEFF Research Database (Denmark)

    Arvidson, K; Abdallah, B M; Applegate, L A;

    2011-01-01

    This invited review covers research areas of central importance for orthopedic and maxillofacial bone tissue repair, including normal fracture healing and healing problems, biomaterial scaffolds for tissue engineering, mesenchymal and fetal stem cells, effects of sex steroids on mesenchymal stem...... cells, use of platelet rich plasma for tissue repair, osteogenesis and its molecular markers. A variety of cells in addition to stem cells, as well as advances in materials science to meet specific requirements for bone and soft tissue regeneration by addition of bioactive molecules, are discussed....

  10. [Bone health in patients with anorexia nervosa].

    Science.gov (United States)

    Suzuki, Mari Hotta

    2013-02-01

    Osteoporosis associated with anorexia nervosa (AN) is common, and tends to be severe, slow to recover from, and sometimes irreversible. The abnormal bone metabolism in severely emaciated AN patients involves both a reduction in bone formation and an increase in bone resorption. The annual change in lumbar bone mineral density (BMD) is significantly correlated with BMI at the entry. The critical BMI for a positive increase in BMD was 16.4±0.3 kg/m(2). Nutritional improvement with body weight gain is the most important goal of treatment for AN-related osteoporosis since it increases both serum levels of insulin-like growth factor-I, a potent osteogenic factor, and estradiol, a powerful bone resorption inhibitor. However, it is difficult for AN patients to accept weight gain. About 50% of AN patients are insufficient of vitamin D and 43% show an increase in plasma undercalboxylated osteocalcin, indicating a deficiency state of the vitamin K(2). Vitamin D(3) or vitamin K(2) (menatetrenone) can prevent further bone loss in severely emaciated AN patients. Recently, bone strength has been evaluated by both BMD and bone quality. Plasma levels of homocysteine, a marker of degradation of bone quality, have significantly positive correlation with their ages of AN patients. We must evaluate bone density as well as bone quality in AN patients. PMID:23354095

  11. Anatomical and biochemical investigation of primary brain tumours

    International Nuclear Information System (INIS)

    Cancerous transformation entails major biochemical changes including modifications of the energy metabolism of the cell, e.g. utilisation of glucose and other substrates, protein synthesis, and expression of receptors and antigens. Tumour growth also leads to heterogeneity in blood flow owing to focal necrosis, angiogenesis and metabolic demands, as well as disruption of transport mechanisms of substrates across cell membranes and other physiological boundaries such as the blood-brain barrier. All these biochemical, histological and anatomical changes can be assessed with emission tomography, X-ray computed tomography (CT), magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS). Whereas anatomical imaging is aimed at the diagnosis of brain tumours, biochemical imaging is better suited for tissue characterisation. The identification of a tumoural mass and the assessment of its size and vascularisation are best achieved with X-ray CT and MRI, while biochemical imaging can provide additional information that is crucial for tumour classification, differential diagnosis and follow-up. As the assessment of variables such as water content, appearance of cystic lesions and location of the tumour are largely irrelevant for tissue characterisation, a number of probes have been employed for the assessment of the biochemical features of tumours. Since biochemical changes may be related to the growth rate of cancer cells, they can be thought of as markers of tumour cell proliferation. Biochemical imaging with radionuclides of processes that occur at a cellular level provides information that complements findings obtained by anatomical imaging aimed at depicting structural, vascular and histological changes. This review focusses on the clinical application of anatomical brain imaging and biochemical assessment with positron emission tomography, single-photon emission tomography and MRS in the diagnosis of primary brain tumours, as well as in follow-up. (orig.)

  12. Evidence of an association between seasonal cycling of 25(OH)D and markers of bone health in UK South Asian but not Caucasian women living at 51oN

    OpenAIRE

    Darling, AL; Berry, JL; Gossiel, F.; Hannon, R; Eastell, R.; Lanham-New, SA

    2010-01-01

    Aim: This study aimed to assess whether seasonal cycling of 25(OH)D (25-dihydroxy vitamin D) is associated with bone health. Method: A subgroup of 65 South Asian and Caucasian women who took part in the 2006-2007 D-FINES study was analysed. During this study they had blood drawn in four seasons for determination of 25(OH)D and serum c-telopeptide (sCTX)and in autumn and spring they had a DEXA scan (Hologic). Cycling of 25(OH)D was assessed by calculating the difference between the winter (nad...

  13. Bone mass and turnover in fibromyalgia

    DEFF Research Database (Denmark)

    Jacobsen, Søren; Gam, A; Egsmose, C;

    1993-01-01

    Physical inactivity accelerates bone loss. Since patients with fibromyalgia are relatively physically inactive, bone mass and markers of bone metabolism were determined in 12 premenopausal women with fibromyalgia and in healthy age matched female control subjects. No differences were found in...... lumbar bone mineral density, femoral neck bone mineral density, serum levels of alkaline phosphatase, osteocalcin, ionized calcium and phosphate. The urinary excretion of both hydroxyproline and calcium relative to urinary creatinine excretion was significantly higher in patients with fibromyalgia, p = 0.......01. This was linked to lower urinary creatinine excretion (p = 0.02) probably reflecting lower physical activity in the patients with fibromyalgia. We conclude that bone mass and turnover are generally not affected in premenopausal women with fibromyalgia....

  14. Radioimmunoassay for the measurement of tumour markers

    International Nuclear Information System (INIS)

    At the present time, the new concept of tumour markers (TM) includes not only the ''classical'' secretion products bu also all changes (immunological, biochemical, morphological, antigenic, etc.) which the cell undergoes throughout the transformation process. With the use of isotopic methods we can determine some tumour markers in biological fluids which are useful in clinical practice (preferentially in the follow-up of cancer patients undergoing treatment). Nevertheless, with the new concept to TM, we can also determine other new substances in tumour specimens, prior to any treatment, which can help in the early characterization of the tumour (tissular markers) related to hormone dependence, aggressiveness, drug resistance, free survival interval, etc. The isotopic methods allow us to determine hormone receptors (e.g. oestrogen, androgen, progesterone receptors), growth factor receptors (e.g. epidermal, insulin-like, platelet derived), changes in oncogenes and anti-oncogenes (amplifications, mutations, deletions, overexpression, etc.) oncogene and anti-oncogene products (neu, p53, Rb protein, etc.), proteinases (cathepsins, collagenases, etc.), proteinase inhibitors, some biochemical changes of the different components of cell surface, proteins related to drug resistance and to cell proliferation, etc. In conclusion, the new concept of tumour marker includes all aspects of tumours cells and requires an intercollaborative and co-ordinated study to determine early on the behaviour (characterization) of a tumour and to provide the oncologist with ''real'' information. (author). 26 refs, 6 figs, 8 tabs

  15. Bone Adaptation and Regeneration - New Developments

    Science.gov (United States)

    Klein-Nulend, Jenneke; Bacabac, Rommel Gaud

    Bone is a dynamic tissue that is constantly renewed and adapts to its local loading environment. Mechanical loading results in adaptive changes in bone size and shape that strengthen bone structure. The mechanisms for adaptation involve a multistep process called mechanotransduction, which is the ability of resident bone cells to perceive and translate mechanical energy into a cascade of structural and biochemical changes within the cells. The transduction of a mechanical signal to a biochemical response involves pathways within the cell membrane and cytoskeleton of the osteocytes, the professional mechansensor cells of bone. During the last decade the role of mechanosensitive osteocytes in bone metabolism and turnover, and the lacuno-canalicular porosity as the structure that mediates mechanosensing, is likely to reveal a new paradigm for understanding the bone formation response to mechanical loading, and the bone resorption response to disuse. Strain-derived fluid flow of interstitial fluid through the lacuno-canalicular porosity seems to mechanically activate the osteocytes, as well as ensures transport of cell signaling molecules, nutrients and waste products. Cell-cell signaling from the osteocyte sensor cells to the effector cells (osteoblasts or osteoclasts), and the effector cell response - either bone formation or resorption, allow an explanation of local bone gain and loss as well as remodeling in response to fatigue damage as processes supervised by mechanosensitive osteocytes. The osteogenic activity of cultured bone cells has been quantitatively correlated with varying stress stimulations highlighting the importance of the rate of loading. Theoretically a possible mechanism for the stress response by osteocytes is due to strain amplification at the pericellular matrix. Single cell studies on molecular responses of osteocytes provide insight on local architectural alignment in bone during remodeling. Alignment seems to occur as a result of the

  16. Molecular and biochemical analysis of aroma in CSR10 x Taraori basmati derived Recombinant Inbred Lines

    Directory of Open Access Journals (Sweden)

    Pummy Kumari, Uma Ahuja , Sunita Jain and R.K. Jain

    2012-06-01

    Full Text Available The aroma or fragrance of Basmati rice is associated with the presence and content of chemical compound, 2-acetyl-1-pyrrolineand the trait is monogenic recessive. Several PCR-based co-dominant marker based on RG28 locus were developed, which can differentiate between fragrant and non-fragrant rice cultivars. For molecular and biochemical analysis of aroma, a mapping population comprising 208 recombinant inbred lines (RILs derived from a diverse cross between CSR10 and Taraori Basmati through SSD method was used. RILs are among the best mapping populations, which provide a novel material for linkage mapping of genes/QTLs marker for various traits. Biochemical analysis of aroma was performed with the 1.7% KOH solution and molecular analysis of aroma was carried out with microsatellite markers present on chromosome 8 (BAD2, BADEX7-5, SCUSSR1 to determine the extent of association between trait, marker and chromosome 8. Among these markers, BAD2 amplified aroma specific alleles having 256 bp in 72 lines, BADEX7-5 with 95 bp in 74 lines and SCUSSR1 with 129 bp in 79 lines. Mentel test of significance detected by biochemical analysis of RILs (with 1.7 % KOH and molecular marker study revealed high degree (>90 % of association of aroma with the above mentioned markers, respectively. Some of the F10 lines amplified the heterozygous alleles for two sets of specific markers (BAD2 and SCUSSR-1 but did not show the presence of aroma as analyzed by chemical test. Aromatic and non-aromatic lines were almost common in three markers indicating association of markers with the trait and chromosome 8. The results revealed that these markers could be used for marker assisted selection and RIL population for mapping of aroma QTLs/genes.

  17. Biochemical synthesis with stable isotopes

    International Nuclear Information System (INIS)

    Descriptions of the biochemical synthesis of glucose-13C6 from Agmenellum quadruplication; the biochemical labelling of [13C, 15N] Chlorella and [13C] E. coli, [15N] E. coli, and the production of lactic-13C3 acid utilizing Lactobacillus casei are discussed

  18. The peak bone mass concept: is it still relevant?

    Science.gov (United States)

    Schönau, Eckhard

    2004-08-01

    researchers is shifting away from bone mass to bone geometry or bone strength. Bone mass is one surrogate marker of bone strength. Widely available techniques for measurement of bone mass, such as dual-energy X-ray absorptiometry, radiogrammetry, and computed tomography, can also be used to measure variables of bone geometry such as cortical thickness, cortical area, and moment of inertia. PMID:15197638

  19. Bone Tumor

    Science.gov (United States)

    ... the knee in either the femur (thigh) or tibia (shinbone). Other common locations include the hip and ... bone that is weakened by a tumor to fracture, or break. This may be severely painful. Occasionally, ...

  20. Your Bones

    Science.gov (United States)

    ... a fall! If you play sports like football, soccer, lacrosse, or ice hockey, always wear all the ... to strengthen your bones is through exercise like running, jumping, dancing, and playing sports. Take these steps ...

  1. Effects of Line and Pillar Array Microengineered SiO2 Thin Films on the Osteogenic Differentiation of Human Bone Marrow-Derived Mesenchymal Stem Cells.

    Science.gov (United States)

    Carvalho, Angela; Pelaez-Vargas, Alejandro; Hansford, Derek J; Fernandes, Maria H; Monteiro, Fernando J

    2016-02-01

    A primary goal in bone tissue engineering is the design of implants that induce controlled, guided, and rapid healing. The events that normally lead to the integration of an implant into bone and determine the performance of the device occur mainly at the tissue-implant interface. Topographical surface modification of a biomaterial might be an efficient tool for inducing stem cell osteogenic differentiation and replace the use of biochemical stimuli. The main goal of this work was to develop micropatterned bioactive silica thin films to induce the osteogenic differentiation of human bone marrow-derived mesenchymal stem cells (hMSCs) only through topographical stimuli. Line and pillar micropatterns were developed by a combination of sol-gel/soft lithography and characterized by scanning electron microscopy, atomic force microscopy, and contact angle measurements. hMSCs were cultured onto the microfabricated thin films and flat control for up to 21 days under basal conditions. The micropatterned groups induced levels of osteogenic differentiation and expression of osteoblast-associated markers higher than those of the flat controls. Via comparison of the micropatterns, the pillars caused a stronger response of the osteogenic differentiation of hMSCs with a higher level of expression of osteoblast-associated markers, ALP activity, and extracellular matrix mineralization after the cells had been cultured for 21 days. These findings suggest that specific microtopographic cues can direct hMSCs toward osteogenic differentiation. PMID:26771563

  2. Telopéptido carboxilo terminal del colágeno tipo I (b-CTX sérico y compromiso óseo en la insuficiencia renal crónica Serum b-Type I collagen carboxyterminal telopeptide (b-CTXs and bone involvement in chronic renal failure

    Directory of Open Access Journals (Sweden)

    Beatriz Oliveri

    2005-08-01

    Full Text Available La osteodistrofia renal (ODR se caracteriza por alteraciones óseas. Se evaluaron métodos bioquímicos alternativos a la biopsia ósea en pacientes renales para determinar cambios rápidos del remodelamiento óseo en 43 pacientes predialíticos (PD y 49 hemodializados (HD. Los PD presentaron fosfatemia, fosfatasa alcalina ósea (FAO, hormona paratiroidea intacta (PTHi y b-telopéptido carboxilo terminal del colágeno tipo I (bCTXs mayores y clearence de creatinina (Ccr menores (p40 ml/min. En PD, bCTXs (pAn increase in parathyroid hormone (PTH levels in chronic renal failure (CRF induces bone abnormalities known as renal osteodystrophy (ROD. The aim of the present study was to evaluate alternative biochemical methods to bone biopsy, to evaluate changes in bone remodeling in renal patients. Intact PTH (iPTH and bone markers were measured in 43 predialysis (PD, 49 hemodialysis patients (HD and 185 controls. bCTXs, bone alkaline phosphatase (bAL, iPTH were higher and creatinine clearance (Ccr was lower in PD and HD compared with controls (p40 ml/min. bCTXs (p<0.05 in PD and bCTXs and bAL in HD patients were higher than controls, even when iPTH was within normal range (<65 pg/ml. Patients with severe secondary hyperparathyroidism showed higher bone markers than patients with normal or moderately increased iPTH (p<0.001. These results suggest that even when there is no increase in iPTH, bone remodeling increases (possibly due to other factors exhibiting higher bone resorption, and bCTXs would seem to be an adequate non-invasive tool to assess early bone changes in CRF and prevent future fractures. Bone marker measurements in ROD would be useful to identify patients who may require bone biopsy. However, further studies comparing both methods must be performed before replacing bone biopsy with serum b-CTX.

  3. EVALUATING BIOCHEMICAL INTERNET RESOURCES

    Directory of Open Access Journals (Sweden)

    R.M. Lima

    2007-05-01

    Full Text Available Many people fail to properly evaluate INTERNET information. This is often due to alack of understanding of the issues, by responsible authorities, and, morespecifically, a lack of understanding of the structure and modis operandi of theINTERNET tool. The aim of this project was to analyze biochemical issuesavailable in WEB pages, evaluating contents quality, coverage, accuracy, authorityand currency. Twenty three sites were analyzed for their contents, presence ofbibliographical references, authorship, titles responsibility and adequacy to targetpublic. The great majority (95% did not mention bibliographic references andtarget public. Less than half divulged names and/or graduation status ofresponsibles. Some sites contained critical conceptual errors, such as: oxygen isessential for anaerobic respiration; presence of H2O in photosynthesis dark phase;yeast is a pluricellular fungal; the overall equation of photosynthesis with errors;NADH2 instead NAD+; etc. None of the analyzed sites was thus consideredexcellent. Although the use of the internet is expanding rapidly on collegecampuses, little is known about students usage; how they perceive the reality ofinternet information and how successful they are in searching through it. Our datastrenghthen the need for rigorous evaluation concerning to educational research ofbiochemical themes on the WEB.

  4. Bone Metastasis from Renal Cell Carcinoma

    Science.gov (United States)

    Chen, Szu-Chia; Kuo, Po-Lin

    2016-01-01

    About one-third of patients with advanced renal cell carcinoma (RCC) have bone metastasis that are often osteolytic and cause substantial morbidity, such as pain, pathologic fracture, spinal cord compression and hypercalcemia. The presence of bone metastasis in RCC is also associated with poor prognosis. Bone-targeted treatment using bisphosphonate and denosumab can reduce skeletal complications in RCC, but does not cure the disease or improve survival. Elucidating the molecular mechanisms of tumor-induced changes in the bone microenvironment is needed to develop effective treatment. The “vicious cycle” hypothesis has been used to describe how tumor cells interact with the bone microenvironment to drive bone destruction and tumor growth. Tumor cells secrete factors like parathyroid hormone-related peptide, transforming growth factor-β and vascular endothelial growth factor, which stimulate osteoblasts and increase the production of the receptor activator of nuclear factor κB ligand (RANKL). In turn, the overexpression of RANKL leads to increased osteoclast formation, activation and survival, thereby enhancing bone resorption. This review presents a general survey on bone metastasis in RCC by natural history, interaction among the immune system, bone and tumor, molecular mechanisms, bone turnover markers, therapies and healthcare burden. PMID:27338367

  5. Disrupted Bone Metabolism in Long-Term Bedridden Patients.

    Directory of Open Access Journals (Sweden)

    Keiko Eimori

    Full Text Available Bedridden patients are at risk of osteoporosis and fractures, although the long-term bone metabolic processes in these patients are poorly understood. Therefore, we aimed to determine how long-term bed confinement affects bone metabolism.This study included 36 patients who had been bedridden from birth due to severe immobility. Bone mineral density and bone metabolism markers were compared to the bedridden period in all study patients. Changes in the bone metabolism markers during a follow-up of 12 years were studied in 17 patients aged <30 years at baseline.The bone mineral density was reduced (0.58±0.19 g/cm3, and the osteocalcin (13.9±12.4 ng/mL and urine N-terminal telopeptide (NTX levels (146.9±134.0 mM BCE/mM creatinine were greater than the cutoff value for predicting fracture. Among the bone metabolism markers studied, osteocalcin and NTX were negatively associated with the bedridden period. During the follow-up, osteocalcin and parathyroid hormone were decreased, and the 25(OH vitamin D was increased. NTX at baseline was negatively associated with bone mineral density after 12 years.Unique bone metabolic abnormalities were found in patients who had been bedridden for long periods, and these metabolic abnormalities were altered by further bed confinement. Appropriate treatment based on the unique bone metabolic changes may be important in long-term bedridden patients.

  6. Distinct Characteristics of Mandibular Bone Collagen Relative to Long Bone Collagen: Relevance to Clinical Dentistry

    Directory of Open Access Journals (Sweden)

    Takashi Matsuura

    2014-01-01

    Full Text Available Bone undergoes constant remodeling throughout life. The cellular and biochemical mechanisms of bone remodeling vary in a region-specific manner. There are a number of notable differences between the mandible and long bones, including developmental origin, osteogenic potential of mesenchymal stem cells, and the rate of bone turnover. Collagen, the most abundant matrix protein in bone, is responsible for determining the relative strength of particular bones. Posttranslational modifications of collagen, such as intermolecular crosslinking and lysine hydroxylation, are the most essential determinants of bone strength, although the amount of collagen is also important. In comparison to long bones, the mandible has greater collagen content, a lower amount of mature crosslinks, and a lower extent of lysine hydroxylation. The great abundance of immature crosslinks in mandibular collagen suggests that there is a lower rate of cross-link maturation. This means that mandibular collagen is relatively immature and thus more readily undergoes degradation and turnover. The greater rate of remodeling in mandibular collagen likely renders more flexibility to the bone and leaves it more suited to constant exercise. As reviewed here, it is important in clinical dentistry to understand the distinctive features of the bones of the jaw.

  7. Effect of Epimedium-derived Phytoestrogen on Bone Turnover and Bone Microarchitecture in OVX-induced Osteoporotic Rats

    Institute of Scientific and Technical Information of China (English)

    Songlin PENG; Renyun XIA; Huang FANG; Feng LI; Anmin CHEN; Ge ZHANG; Ling QIN

    2008-01-01

    To investigate the preventive effect of epimedium-defivod phytoestrogen (PE) on osteoporosis induced by ovariectomy (OVX) in rats, 11-month-old female Wistar rats were randomly di- vided into Sham, OVX and PE groups. One week after OVX, daily oral administration of PE (0.4 g·kg-1·day·-1) started in PE group, and rats in Sham and OVX groups were given vehicle accordingly. The administrations lasted for 12 weeks. The biological markers including serum osteocalcin (OC) and urinary deoxypyridinoline (DPD) for bone turnover were evaluated at the end of the 12th week. On the 13th week, all the rats were sacrificed. The right proximal tibiae were removed, subjected to micro CT for determination of trabeonlar bone structure and then bone histomorphometry was per- formed to assess bone remodeling. The OVX rats were in a high bone turnover status as evidenced by increased bone formation markers and bone resorption markers. Treatment with PE could suppress the high bone turnover rate in OVX rats. Micro CT data revealed that PE treatment could ameliorate the deterioration of the micro-architecture of proximal tibiae induced by OVX, as demonstrated by greater bone volume, increased trabecular thickness and less trahecular separation in PE group in comparison with OVX group. The static and dynamic parameters of bone histomorphometry indi- cated that there were significant increases in bone formation variables and significant decreases in bone resorption variables between PE and OVX groups. The findings suggest that PE has a beneficial effect on trabecular bone in OVX rat model and this effect is possibly associated with stimulation of bone formation as well as inhibition of bone resorption.

  8. Serum biomarkers of bone metabolism in castration resistant prostate cancer patients with skeletal metastases

    Science.gov (United States)

    Background. Prior studies suggest that elevated markers of bone turnover are prognostic for poor survival in castration resistant prostate cancer (CRPC). The predictive role of these markers relative to bone-targeted therapy is unknown. We prospectively evaluated the prognostic and predictive value ...

  9. Functional adaptation of long bone extremities involves the localized ``tuning'' of the cortical bone composition; evidence from Raman spectroscopy

    Science.gov (United States)

    Buckley, Kevin; Kerns, Jemma G.; Birch, Helen L.; Gikas, Panagiotis D.; Parker, Anthony W.; Matousek, Pavel; Goodship, Allen E.

    2014-11-01

    In long bones, the functional adaptation of shape and structure occurs along the whole length of the organ. This study explores the hypothesis that adaptation of bone composition is also site-specific and that the mineral-to-collagen ratio of bone (and, thus, its mechanical properties) varies along the organ's length. Raman spectroscopy was used to map the chemical composition of long bones along their entire length in fine spatial resolution (1 mm), and then biochemical analysis was used to measure the mineral, collagen, water, and sulfated glycosaminoglycan content where site-specific differences were seen. The results show that the mineral-to-collagen ratio of the bone material in human tibiae varies by 10% toward the flared extremities of the bone. Comparisons with long bones from other large animals (horses, sheep, and deer) gave similar results with bone material composition changing across tens of centimeters. The composition of the bone apatite also varied with the phosphate-to-carbonate ratio decreasing toward the ends of the tibia. The data highlight the complexity of adaptive changes and raise interesting questions about the biochemical control mechanisms involved. In addition to their biological interest, the data provide timely information to researchers developing Raman spectroscopy as a noninvasive tool for measuring bone composition in vivo (particularly with regard to sampling and measurement protocol).

  10. Bone densitometer

    International Nuclear Information System (INIS)

    In an x-ray bone densitometer, special calibration techniques are employed to accommodate variations. In one aspect, a bone-like calibration material is interposed and the system determines the calibration data from rays passing only through flesh. In another aspect, a rotating device carries the calibration material through the beam. The specific densitometer shown uses an x-ray tube operated at two different voltages to generate a pencil beam, the energy levels of the x-ray photons being a function of the voltage applied. An integrating detector is timed to integrate the detected signal of the patient-attenuated beam over each pulse, the signals are converted to digital values and a digital computer converts the set of values produced by the raster scan into a representation of the bone density of the patient. Multiple reference detectors with differing absorbers are used by the system to continuously correct for variation in voltage and current of the x-ray tube. Calibration is accomplished by the digital computer on the basis of passing the pencil beam through known bone-representing substance as the densitometer scans portions of the patient having bone and adjacent portions having only flesh. A set of detected signals affected by the calibration substance in regions having only flesh is compared by the computer with a set of detected signals unaffected by the calibration material

  11. Induced biochemical conversions of heavy crude oils

    International Nuclear Information System (INIS)

    Products formed during multiple interactions of microorganisms with oils fall into two major categories: those formed due to the action of indigenous microorganisms under reservoir conditions over geological periods of time and those products which are generated by the action of introduced organisms. The extreme end product of the first category is the production of heavy 'biodegraded' crudes. The extreme end product of the second category is the production of reduced sulfates due to the introduction of sulfate-reducing bacteria which may lead to the souring of a field. There is, however, a select group of microorganisms whose action on the crudes is beneficial. The interactions between such microorganisms and different crude oils occur through complex biochemical and chemical reactions. These reactions depend on multiple variables within and at the interface of a multicomponent system consisting of organic, aqueous, and inorganic components. Studies, carried out in this laboratory (BNL) of biochemical and chemical reactions in crude oils which involve extremophilic organisms (organisms which thrive in extreme environments), have shown that the reactions are not random and follow distinct trends. These trends can be categorized. The use of a group of characteristic chemical markers, such as mass spectrometric fragmentation patterns of light and heavy hydrocarbons, heterocyclic and organometallic compounds, as well as total trace metal and heteroatom contents of crude oils before and after the biochemical treatment allows to follow the type and the extent of chemical changes which occur during the biochemical conversion of heavy crude oils by microorganisms. The bioconversion involves multiple, simultaneous, and/or concurrent chemical reactions in which the microorganisms serve as biocatalysts. In this sense, the biocatalysts are active in a reaction medium which depends on the chemical composition of the crude and the selectivity of the biocatalyst. Thus, the

  12. Enzyme and biochemical producing fungi

    DEFF Research Database (Denmark)

    Lübeck, Peter Stephensen; Lübeck, Mette; Nilsson, Lena;

    2010-01-01

    factories for sustainable production of important molecules. For developing fungi into efficient cell factories, the project includes identification of important factors that control the flux through the pathways using metabolic flux analysis and metabolic engineering of biochemical pathways....

  13. Glucose-dependent insulinotropic polypeptide inhibits bone resorption in humans

    DEFF Research Database (Denmark)

    Nissen, Anne; Christensen, Mikkel; Knop, Filip K;

    2014-01-01

    BACKGROUND: In humans, the pronounced postprandial reduction in bone resorption (decreasing bone resorption markers by around 50%) has been suggested to be caused by gut hormones. Glucose-dependent insulinotropic polypeptide (GIP) is a peptide hormone secreted postprandially from the small intest...

  14. Bone Metabolism in Adolescent Boys with Anorexia Nervosa

    OpenAIRE

    Misra, Madhusmita; Katzman, Debra K.; Cord, Jennalee; Manning, Stephanie J; Mendes, Nara; Herzog, David B.; Miller, Karen K.; Klibanski, Anne

    2008-01-01

    Background: Anorexia nervosa (AN) is a condition of severe undernutrition associated with low bone mineral density (BMD) in adolescent females with this disorder. Although primarily a disease in females, AN is increasingly being recognized in males. However, there are few or no data regarding BMD, bone turnover markers or their predictors in adolescent AN boys.

  15. Future human bone research in space

    Science.gov (United States)

    LeBlanc, A.; Shackelford, L.; Schneider, V.

    1998-01-01

    Skylab crewmembers demonstrated negative calcium (Ca) balance reaching about -300 mg/day by flight day 84. Limited bone density (BMD) measurements documented that bone was not lost equally from all parts of the skeleton. Subsequent BMD studies during long duration Russian flights documented the regional extent of bone loss. These studies demonstrated mean losses in the spine, femur neck, trochanter, and pelvis of about 1%-1.6% with large differences between individuals as well as between bone sites in a given individual. Limited available data indicate postflight bone recovery occurred in some individuals, but may require several years for complete restoration. Long duration bedrest studies showed a similar pattern of bone loss and calcium balance (-180 mg/day) as spaceflight. During long duration bedrest, resorption markers were elevated, formation markers were unchanged, 1,25 vitamin D (VitD) and calcium absorption were decreased, and serum ionized Ca was increased. Although this information is a good beginning, additional spaceflight research is needed to assess architectural and subregional bone changes, elucidate mechanisms, and develop efficient as well as effective countermeasures. Space research poses a number of unique problems not encountered in ground-based laboratory research. Therefore, researchers contemplating human spaceflight research need to consider a number of unique problems related to spaceflight in their experimental design.

  16. Ouroboros - Playing A Biochemical

    Directory of Open Access Journals (Sweden)

    D. T. Rodrigues

    2014-08-01

    Full Text Available Ouroboros: Playing A Biochemical RODRIGUES,D.T.1,2;GAYER, M.C.1,2; ESCOTO, D.F.1; DENARDIN, E.L.G.2, ROEHRS, R.1,2 1Interdisciplinary Research Group on Teaching Practice, Graduate Program in Biochemistry, Unipampa, RS, Brazil 2Laboratory of Physicochemical Studies and Natural Products, Post Graduate Program in Biochemistry, Unipampa, RS, Brazil Introduction: Currently, teachers seek different alternatives to enhance the teaching-learning process. Innovative teaching methodologies are increasingly common tools in educational routine. The use of games, electronic or conventional, is an effective tool to assist in learning and also to raise the social interaction between students. Objective: In this sense our work aims to evaluate the card game and "Ouroboros" board as a teaching and learning tool in biochemistry for a graduating class in Natural Sciences. Materials and methods: The class gathered 22 students of BSc in Natural Sciences. Each letter contained a question across the board that was drawn to a group to answer within the allotted time. The questions related concepts of metabolism, organic and inorganic chemical reactions, bioenergetics, etc.. Before the game application, students underwent a pre-test with four issues involving the content that was being developed. Soon after, the game was applied. Then again questions were asked. Data analysis was performed from the ratio of the number of correct pre-test and post-test answers. Results and discussion: In the pre-test 18.1% of the students knew all issues, 18.1% got 3 correct answers, 40.9% answered only 2 questions correctly and 22.7% did not hit any. In post-test 45.4% answered all the questions right, 31.8% got 3 questions and 22.7% got 2 correct answers. The results show a significant improvement of the students about the field of content taught through the game. Conclusion: Generally, traditional approaches of chemistry and biochemistry are abstract and complex. Thus, through games

  17. Understanding coupling between bone resorption and formation

    DEFF Research Database (Denmark)

    Andersen, Thomas Levin; Abdelgawad, Mohamed Essameldim; Kristensen, Helene Bjørg;

    2013-01-01

    Bone remodeling requires bone resorption by osteoclasts, bone formation by osteoblasts, and a poorly investigated reversal phase coupling resorption to formation. Likely players of the reversal phase are the cells recruited into the lacunae vacated by the osteoclasts and presumably preparing these...... lacunae for bone formation. These cells, called herein reversal cells, cover >80% of the eroded surfaces, but their nature is not identified, and it is not known whether malfunction of these cells may contribute to bone loss in diseases such as postmenopausal osteoporosis. Herein, we combined...... histomorphometry and IHC on human iliac biopsy specimens, and showed that reversal cells are immunoreactive for factors typically expressed by osteoblasts, but not for monocytic markers. Furthermore, a subpopulation of reversal cells showed several distinctive characteristics suggestive of an arrested...

  18. The role of daily physical activity and nutritional status on bone turnover in cystic fibrosis: a cross-sectional study

    Directory of Open Access Journals (Sweden)

    Sergio Tejero

    2016-01-01

    Full Text Available ABSTRACT Background Nutritional status and daily physical activity (PA may be an excellent tool for the maintenance of bone health in patients with cystic fibrosis (CF. Objective To evaluate the relationship between nutritional status, daily physical activity and bone turnover in cystic fibrosis patients. Method A cross-sectional study of adolescent and adult patients diagnosed with clinically stable cystic fibrosis was conducted. Total body, femoral neck, and lumbar spine bone mineral density (BMD were determined by dual energy X-ray absorptiometry and bone metabolism markers ALP, P1NP, PICP, and ß-CrossLaps. PA monitoring was assessed for 5 consecutive days using a portable device. Exercise capacity was also determined. Serum 25-hydroxyvitamin D and vitamin K were also determined in all participants. Results Fifty patients (median age: 24.4 years; range: 16-46 were included. BMI had positive correlation with all BMD parameters, with Spearman’s coefficients ranging from 0.31 to 0.47. Total hip bone mineral density and femoral neck BMD had positive correlation with the daily time spent on moderate PA (>4.8 metabolic equivalent-minutes/day; r=0.74, p7.2 metabolic equivalent-minutes/day; r=0.45 p<0.001, body mass index (r=0.44, p=0.001, and muscle mass in limbs (r=0.41, p=0.004. Levels of carboxy-terminal propeptide of type 1 collagen were positively associated with the daily time spent on moderate (r=0.33 p=0.023 and vigorous PA (r=0.53, p<0.001. Conclusions BMI and the daily time spent on moderate PA were found to be correlated with femoral neck BMD in CF patients. The association between daily PA and biochemical markers of bone formation suggests that the level of daily PA may be linked to bone health in this patient group. Further research is needed to confirm these findings.

  19. Contemporary Therapeutic Approaches Targeting Bone Complications in Prostate Cancer

    OpenAIRE

    Lee, Richard J.; Saylor, Philip J.; Smith, Matthew R.

    2010-01-01

    Skeletal complications are major causes of morbidity in patients with prostate cancer. Despite the osteoblastic appearance of prostate cancer bone metastases, elevated serum and urinary markers of bone resorption are indicative of high osteoclast activity. Increased osteoclast activity is independently associated with subsequent skeletal complications, disease progression, and death. Osteoclast-targeted therapies aim to reduce the risk for disease-related skeletal complications, bone metastas...

  20. 肺肿瘤标志物及碱性磷酸酶对肺癌骨转移早期诊断的临床意义%Study on the Clinical Value of Pulmonary Tumor Markers and Bone Alkafine Phosphatase Detection in Early Diagnosis of Bone Metastasis of Lung Cancer

    Institute of Scientific and Technical Information of China (English)

    李殿波; 姜格宁

    2015-01-01

    Objective To study the clinical significance of pulmonary tumormarkers:cytokeratin19 solu-ble fragments ( CYFRA21-1 ) , carcinoembryonic antigen ( CEA ) , neuron specific enolase ( NSE ) , carbohy-drate antigen 125(CA125) and bone alkaline phosphatase(BALP) in early diagnosis of bone metastasis of lung cancer.Methods A total of 123 patients hospitalized in Linyi Tumor Hospital from Jul.2009 to Dec. 2011[including 47 cases of lung benign tumor(as the benign lung tumor group),40 cases of lung cancer without bone metastases(as the lung cancer without bone metastases group),and 36 cases of lung cancer with bone metastases( as the bone metastasis of lung cancer group ) ] were selected.The enzyme-linked immu-nosorbent assay was applied to detect the expression levels of CYFRA21-1,CEA,NSE,CA125 and BALP in the serum of all the patients,and such levels were compared among the groups.Results The expression lev-els of CYFRA 21-1,CEA,NSE,CA125,BALP of benign lung tumor group were (5.0 ±0.8) μg/L,(6.7 ± 0.5) pg/L,(18.9 ±2.5)μg/L,(29.0 ±2.8) kU/L,( 224.7 ±16.5) U/L;those of the lung cancer with-out bone metastases group were (15.1 ±2.7) μg/L,(10.6 ±1.7) pg/L,(30.2 ±4.2) μg/L,(60.1 ± 4.7) kU/L,(454.6 ±32.7) U/L;and those of the bone metastasis of lung cancer group were (29.7 ± 8.8) μg/L, (18.2 ±1.8) pg/L,(58.2 ±6.9) μg/L,(100.7 ±8.8) kU/L, (668.2 ±45.8) U/L.Such levels of the lung cancer without bone metastases group and bone metastasis of lung cancer group significantly increased compared with benign lung tumor group ( P <0.05 ).Such levels of the bone-metastasis of lung cancer group were also significantly higher than those of the lung cancer without bone metastases group ( P<0.05).Conclusion Detection of serum levels of CYFRA21-1,CEA,NSE,CA125 and BALP in patients with bone metastases of lung cancer can reveal the biological changes of such patients and has certain signifi-cance in the early diagnosis of bone-metastasis of lung cancer.%目的:探讨肺