WorldWideScience

Sample records for bilirubin

  1. Bilirubin Test

    Science.gov (United States)

    ... Bilirubin; Indirect Bilirubin; Unconjugated Bilirubin Formal name: Bilirubin - blood Related tests: Liver Panel ; GGT ; ALP ; AST ; ALT ; Hepatitis A ; Hepatitis B ; Hepatitis C ; Complete Blood Count ; Urinalysis ; Direct Antiglobulin ...

  2. [Cytoprotective effects of bilirubin].

    Science.gov (United States)

    Vítek, L

    2005-01-01

    Bilirubin, a major product of heme catabolism, belongs to compounds with pleiotropic biologic effects. For a long time bilirubin was considered as a metabolite dangerous for human health, neonatologists know well serious clinical complication of neonatal jaundice called bilirubin encephalopathy. Nevertheless, recent data has demonstrated that bilirubin exhibits potent antioxidant and even anti-inflammatory effects with substantial clinical impacts. The aim of the present study was to summarize present knowledge in this rapidly evolving field and suggest further possible clinical consequences. PMID:15981989

  3. Blood Test: Bilirubin

    Science.gov (United States)

    ... the blood. Babies with high levels may need phototherapy (treatment with a special light that makes bilirubin ... are afraid of needles. Explaining the test in terms your child can understand might help ease some ...

  4. Bilirubin present in diverse angiosperms

    OpenAIRE

    Pirone, Cary; Johnson, Jodie V.; Quirke, J. Martin. E.; Priestap, Horacio A.; Lee, David

    2010-01-01

    Background and aims Bilirubin is an orange-yellow tetrapyrrole produced from the breakdown of heme by mammals and some other vertebrates. Plants, algae and cyanobacteria synthesize molecules similar to bilirubin, including the protein-bound bilins and phytochromobilin which harvest or sense light. Recently, we discovered bilirubin in the arils of Strelitzia nicolai, the White Bird of Paradise Tree, which was the first example of this molecule in a higher plant. Subsequently, we identified bil...

  5. Bilirubin Binding to PPARα Inhibits Lipid Accumulation.

    Science.gov (United States)

    Stec, David E; John, Kezia; Trabbic, Christopher J; Luniwal, Amarjit; Hankins, Michael W; Baum, Justin; Hinds, Terry D

    2016-01-01

    Numerous clinical and population studies have demonstrated that increased serum bilirubin levels protect against cardiovascular and metabolic diseases such as obesity and diabetes. Bilirubin is a potent antioxidant, and the beneficial actions of moderate increases in plasma bilirubin have been thought to be due to the antioxidant effects of this bile pigment. In the present study, we found that bilirubin has a new function as a ligand for PPARα. We show that bilirubin can bind directly to PPARα and increase transcriptional activity. When we compared biliverdin, the precursor to bilirubin, on PPARα transcriptional activation to known PPARα ligands, WY 14,643 and fenofibrate, it showed that fenofibrate and biliverdin have similar activation properties. Treatment of 3T3-L1 adipocytes with biliverdin suppressed lipid accumulation and upregulated PPARα target genes. We treated wild-type and PPARα KO mice on a high fat diet with fenofibrate or bilirubin for seven days and found that both signal through PPARα dependent mechanisms. Furthermore, the effect of bilirubin on lowering glucose and reducing body fat percentage was blunted in PPARα KO mice. These data demonstrate a new function for bilirubin as an agonist of PPARα, which mediates the protection from adiposity afforded by moderate increases in bilirubin. PMID:27071062

  6. Animal pigment bilirubin discovered in plants.

    Science.gov (United States)

    Pirone, Cary; Quirke, J Martin E; Priestap, Horacio A; Lee, David W

    2009-03-01

    The bile pigment bilirubin-IXalpha is the degradative product of heme, distributed among mammals and some other vertebrates. It can be recognized as the pigment responsible for the yellow color of jaundice and healing bruises. In this paper we present the first example of the isolation of bilirubin in plants. The compound was isolated from the brilliant orange-colored arils of Strelitzia nicolai, the white bird of paradise tree, and characterized by HPLC-ESMS, UV-visible, (1)H NMR, and (13)C NMR spectroscopy, as well as comparison with an authentic standard. This discovery indicates that plant cyclic tetrapyrroles may undergo degradation by a previously unknown pathway. Preliminary analyses of related plants, including S. reginae, the bird of paradise, also revealed bilirubin in the arils and flowers, indicating that the occurrence of bilirubin is not limited to a single species or tissue type. PMID:19206232

  7. PPARα: A Master Regulator of Bilirubin Homeostasis

    OpenAIRE

    Cyril Bigo; Jenny Kaeding; Diala El Husseini; Iwona Rudkowska; Mélanie Verreault; Marie Claude Vohl; Olivier Barbier

    2014-01-01

    Hypolipidemic fibrates activate the peroxisome proliferator-activated receptor (PPAR) α to modulate lipid oxidation and metabolism. The present study aimed at evaluating how 3 PPARα agonists, namely, fenofibrate, gemfibrozil, and Wy14,643, affect bilirubin synthesis and metabolism. Human umbilical vein epithelial cells (HUVEC) and coronary artery smooth muscle cells (CASMC) were cultured in the absence or presence of the 3 activators, and mRNA, protein, and/or activity levels of the bilirubin...

  8. Intermolecular interactions in the bilirubin-cholate-silica system

    Science.gov (United States)

    Vlasova, N. N.; Golovkova, L. P.; Severinovskaya, O. V.

    2007-06-01

    Bilirubin-cholate interactions in aqueous solutions were studied. The constants of binding of bilirubin with taurocholate dimers and taurodeoxycholate trimers were calculated. The adsorption of bilirubin and cholates on the surface of highly dispersed silica was studied. It was shown that taurine-conjugated cholates are poorly adsorbed from micellar solutions on the silica surface, the specific amount of bilirubin adsorbed decreases with increasing concentration of cholates in the solution, the affinity of free bilirubin for the silica surface is independent of the nature of the cholic acid, and that the affinity of cholate-bilirubin complexes for the silica surface is lower than the affinity of free bilirubin.

  9. PPARα: A Master Regulator of Bilirubin Homeostasis

    Directory of Open Access Journals (Sweden)

    Cyril Bigo

    2014-01-01

    Full Text Available Hypolipidemic fibrates activate the peroxisome proliferator-activated receptor (PPAR α to modulate lipid oxidation and metabolism. The present study aimed at evaluating how 3 PPARα agonists, namely, fenofibrate, gemfibrozil, and Wy14,643, affect bilirubin synthesis and metabolism. Human umbilical vein epithelial cells (HUVEC and coronary artery smooth muscle cells (CASMC were cultured in the absence or presence of the 3 activators, and mRNA, protein, and/or activity levels of the bilirubin synthesizing heme oxygenase- (HO- 1 and biliverdin reductase (BVR enzymes were determined. Human hepatocytes (HH and HepG2 cells sustained similar treatments, except that the expression of the bilirubin conjugating UDP-glucuronosyltransferase (UGT 1A1 enzyme and multidrug resistance-associated protein (MRP 2 transporter was analyzed. In HUVECs, gemfibrozil, fenofibrate, and Wy14,643 upregulated HO-1 mRNA expression without affecting BVR. Wy14,643 and fenofibrate also caused HO-1 protein accumulation, while gemfibrozil and fenofibrate favored the secretion of bilirubin in cell media. Similar positive regulations were also observed with the 3 PPARα ligands in CASMCs where HO-1 mRNA and protein levels were increased. In HH and HepG2 cells, both UGT1A1 and MRP2 transcripts were also accumulating. These observations indicate that PPARα ligands activate bilirubin synthesis in vascular cells and metabolism in liver cells. The clinical implications of these regulatory events are discussed.

  10. Initial photochemistry of bilirubin probed by femtosecond spectroscopy.

    Science.gov (United States)

    Zietz, Burkhard; Gillbro, Tomas

    2007-10-18

    Bilirubin is a breakdown product from heme catabolism, and reduced excretion of bilirubin can lead to jaundice. Phototherapy is the most common treatment for neonatal jaundice, a condition frequently encountered in newborn infants. Knowledge of the photochemistry of bilirubin, which is dominated by (ultra)fast components, is necessary for the profound understanding of the processes in phototherapy. Here, we report results from femtosecond fluorescence upconversion measurements on bilirubin and half-bilirubin model compounds, as well as pump-probe absorption measurements on bilirubin. A fast component of ca. 120 fs in the multiexponential fluorescence decay, being only visible in the bilirubin molecule, is interpreted as exciton localization within the molecular halves. The slower components of several hundreds of femtoseconds and a few picoseconds, occurring in bilirubin and the half-bilirubin model, are interpreted as relaxation to a (twisted) intermediate, which decays further with ca. 15 ps to the ground state. PMID:17927274

  11. Prognostic significance of serum bilirubin in stroke

    International Nuclear Information System (INIS)

    Background: Oxidative injury is an important cause of the neurologic lesion in stroke. Serum bilirubin is considered a natural antioxidant that may affect the prognosis of stroke. The purpose of this study was to evaluate the prognostic significance of bilirubin in stroke patients. Methods: A prospective cross-sectional study was conducted in Medical Units of Khyber Teaching Hospital, Peshawar. Inpatients admitted with acute attack of stroke were included in this study. Data regarding serum bilirubin and concurrent cerebrovascular risk factors were collected. National Institutes of Health Stroke Scale (NIHSS) and modified Rankin Scale (mRS) were used to analyse stroke's severity and functional outcomes, respectively. Results: Hypertension, diabetes mellitus and heart diseases were the most common risk factors. Patients were divided into 3 groups on the basis of serum bilirubin, i.e., =0.6 mg/dl (Group-1), 0.7-0.9 mg/dl (Group-2), and =1.0 mg/dl (Group-3). The mean pre-hospitalisation NIHSS score for Groups 1, 2 and 3 was 5.62, 11.66 and 25.33, respectively; and post-hospitalisation score was 0.875, 3.76 and 16.26, respectively. The pre-hospitalisation mRS score was 4 for Group-1, 4.52 for Group-2 and 4.93 for Group-3; while post-hospitalisation Mrs Score was 1.50, 2.38 and 4.26, respectively. Average serum bilirubin level was significantly higher in patients with poor outcomes as compared with good outcomes (p<0.01). Conclusions: This study suggests that higher serum bilirubin levels were associated with increased stroke severity, longer hospitalisation and poor prognosis. (author)

  12. Inaccurate values for direct bilirubin with some commonly used direct bilirubin procedures.

    Science.gov (United States)

    Chan, K M; Scott, M G; Wu, T W; Clouse, R E; Calvin, D R; Koenig, J; Lichti, D A; Ladenson, J H

    1985-09-01

    We compared five methods for the determination of total and direct bilirubins in serum samples from normal controls, subjects with Gilbert's syndrome, and serum pools containing about 50 and 150 mg of total bilirubin per liter. The Kodak Ektachem method and a diazotized sulfanilic acid method with 0.15 mmol/L sodium nitrite concentrations are the only methods that gave accurate direct bilirubin values, as judged by liquid-chromatographic results. The aca method that involved p-nitrobenzene diazonium tetrafluoroborate and another diazotized sulfanilic acid method with a higher concentration of sodium nitrite (0.8 mmol/L) yielded falsely high values for direct bilirubin, which could lead to clinical confusion. The more recently introduced diazotized sulfanilic acid method of the aca gave substantially better results than the p-nitrobenzene diazonium tetrafluoroborate method but was still inaccurate. Systematic investigation of these procedures revealed that the overestimation of direct bilirubin by the diazotized sulfanilic acid method was related to the amount of unconjugated bilirubin present and its ability to react as direct bilirubin in the presence of higher concentrations of sodium nitrite. Inherent properties of p-nitrobenzene diazonium tetrafluoroborate appeared to be responsible for inaccuracies in that method, which could not be corrected by varying reagent concentration or the reaction conditions.

  13. Serum Bilirubin Levels and Developmental Outcome

    Directory of Open Access Journals (Sweden)

    J Gordon Millichap

    2006-05-01

    Full Text Available The neurodevlopmental risks associated with neonatal total serum bilirubin levels of 25 mg/dL or higher in 140 affected infants were compared with 419 randomly selected controls from a cohort of term-infants born 1995-1998 in Kaiser Permanente hospitals in northern California.

  14. Mechanisms of bilirubin toxicity: clinical implications.

    Science.gov (United States)

    Hansen, Thor Willy Ruud

    2002-12-01

    The basic mechanism of kernicterus and bilirubin encephalopathy has not been unequivocally determined. Much knowledge has been gained about phenomena that contribute to bilirubin neurotoxicity, and this knowledge has implications for clinical practice. Conditions that impact on blood-brain barrier function, increase brain blood flow, or impact on bilirubin metabolism, including its transport in serum, should be avoided, if possible. Such conditions include drugs and drug stabilizers that compete with bilirubin binding to albumin, or that inhibit P-glycoprotein in the blood-brain barrier, prematurity/immaturity, and clinically significant illness in the infant that involves hemolysis, respiratory and metabolic acidosis, infection, asphyxia, hypoxia and (perhaps) hyperoxia, and hyperosmolality. If these conditions are not avoidable then there should be a more aggressive approach to the treatment of hyperbilirubinemia. The limits of tolerance for hyperbilirubinemia varies among neonates and there are no tools to determine with certainty when a particular infant is approaching the danger zone. Neurological symptoms in a jaundiced infant require extreme vigilance, and, in most cases, immediate intervention. PMID:12516745

  15. Extreme Bilirubin Levels as a Causal Risk Factor for Symptomatic Gallstone Disease

    DEFF Research Database (Denmark)

    Stender, Stefan; Frikke-Schmidt, Ruth; Nordestgaard, Børge G;

    2013-01-01

    In individuals without blockage of their bile ducts, levels of plasma bilirubin likely reflect levels of biliary bilirubin; higher biliary bilirubin levels may increase the risk of gallstone disease.......In individuals without blockage of their bile ducts, levels of plasma bilirubin likely reflect levels of biliary bilirubin; higher biliary bilirubin levels may increase the risk of gallstone disease....

  16. Rapid clearance of a structural isomer of bilirubin during phototherapy.

    OpenAIRE

    Ennever, J F; Costarino, A T; Polin, R A; Speck, W T

    1987-01-01

    During phototherapy for neonatal jaundice, bilirubin is converted into a variety of photoproducts. Determination of the relative importance of these photoproducts to the elimination of bilirubin requires knowledge of their rates of excretion. We have measured the rate at which the structural isomer of bilirubin, lumirubin, disappeared from the serum of nine jaundiced premature infants after the cessation of phototherapy. In all patients studied, the decline in serum lumirubin could be approxi...

  17. Bilirubin/Albumin Ratio for Predicting Acute Bilirubin-induced Neurologic Dysfunction

    Directory of Open Access Journals (Sweden)

    Gholamreza Esmaeeli Djavid

    2011-03-01

    Full Text Available Objective:The aim of this study was to evaluate the bilirubin albumin (B/A ratio in comparison with total serum bilirubin (TSB for predicting acute bilirubin-induced neurologic dysfunction (BIND. Methods:Fifty two term and near term neonates requiring phototherapy and exchange transfusion for severe hyperbilirubinemia in Childrens Medical Center, Tehran, Iran, during September 2007 to September 2008, were evaluated. Serum albumin and bilirubin were measured at admission. All neonates were evaluated for acute BIND based on clinical findings. Findings:Acute BIND developed in 5 (3.8% neonates. B/A ratio in patients with BIND was significantly higher than in patients without BIND (P<0.001. Receiver operation characteristics (ROC analysis identified a TSB cut off value of 25 mg/dL [area under the curve (AUC 0.945] with a sensitivity of 100% and specificity of 85%. Also, according to the ROC curve, B/A ratio cut off value for predicting acute BIND was 8 (bil mg/al g (AUC 0.957 with sensitivity of 100% and specificity of 94%. Conclusion:Based on our results, we suggest using B/A ratio in conjunction with TSB. This can improve the specificity and prevent unnecessary invasive therapy such as exchange transfusion in icteric neonates.

  18. Comparison of serum bilirubin estimation with transcutaneous bilirubinometry in neonates

    International Nuclear Information System (INIS)

    Objective: To assess usefulness of Minolta Air shield transcutaneous bilirubinometer by comparing bilirubin values obtained by transcutaneous jaundice meter with serum bilirubin estimation. Design: Analytical cross sectional study. Place and duration: NICU Military Hospital Rawalpindi Pakistan Jun 2002 to May 2005. Subjects and Methods: One hundred and fifty neonates admitted to NICU because of visible jaundice were included in the study. Serum was sent to laboratory for total bilirubin estimation. At the same time bilirubin was also checked by a Jaundice Meter. Data was tabulated and t-test applied to compare the two values. Results: One hundred and fifty paired estimations were performed. The transcutaneous bilirubin values ranged from 8.0 mg/dl to 20.4 mg/dl. While serum bilirubin by jaundice meter values ranged between 5.3 mg/dl and 26.0 mg/dl. A Scatter diagram was plotted. It showed a correlation coefficient of 0.78. Conclusion: Bilirubin values obtained by transcutaneous bilirubin meter were not significantly different from laboratory values thus proving the fact that transcutaneous bilirubinometer is a useful device to measure bilirubin. (author)

  19. Does bilirubin protect against hemochromatosis gene (HFE) related mortality?

    NARCIS (Netherlands)

    Alizadeh, Behrooz Z.; Njajou, Omer T.; Houwing-Duistermaat, Jeanine J.; de Jong, Gerard; Vergeer, Jeannette M.; Hofman, Albert; Pols, Huibert A.P.; van Duijn, Cornelia M.

    2004-01-01

    Serum bilirubin is an important antioxidant that is found at increased levels in hereditary hemochromatosis patients. We hypothesized that increased levels of serum bilirubin may play a protective role against oxidative stress induced by iron overload in carriers of mutations in the hereditary hemoc

  20. Genetically elevated bilirubin and risk of ischaemic heart disease

    DEFF Research Database (Denmark)

    Stender, Stefan; Frikke-Schmidt, R; Nordestgaard, B G;

    2013-01-01

    Elevated plasma levels of bilirubin, an endogenous antioxidant, have been associated with reduced risk of ischaemic heart disease (IHD) and myocardial infarction (MI). Whether this is a causal relationship remains unclear.......Elevated plasma levels of bilirubin, an endogenous antioxidant, have been associated with reduced risk of ischaemic heart disease (IHD) and myocardial infarction (MI). Whether this is a causal relationship remains unclear....

  1. Low-normal free thyroxine confers decreased serum bilirubin in type 2 diabetes mellitus

    NARCIS (Netherlands)

    Deetman, Petronella E.; Kwakernaak, Arjan J.; Bakker, Stephan J. L.; Dullaart, Robin P. F.

    2013-01-01

    Background: Bilirubin may confer cardiovascular protection because of its strong antioxidative properties. Both thyroid dysfunction and the diabetic state affect bilirubin metabolism. Here we tested whether low-normal thyroid function affects serum bilirubin among euthyroid subjects with and without

  2. The inverse association of incident cardiovascular disease with plasma bilirubin is unaffected by adiponectin

    NARCIS (Netherlands)

    Dullaart, Robin P. F.; Boersema, Jeltje; Lefrandt, Joop D.; Wolffenbuttel, Bruce H. R.; Bakker, Stephan J. L.

    2014-01-01

    Objective: Bilirubin may protect against atherosclerotic cardiovascular disease (CVD). The heme oxygenase pathway is crucial for bilirubin generation, and is stimulated by adiponectin. We tested the relationship of plasma bilirubin with adiponectin, and determined whether the association of incident

  3. Trans-Cutaneous Bilirubinometery versus Serum Bilirubin in Neonatal Jaundice.

    Science.gov (United States)

    Mahram, Manoochehr; Oveisi, Sonia; Jaberi, Najmeh

    2015-12-01

    Hyperbilirubinemia is a common problem in neonates and causes serious complications. Thus, serial measurements of bilirubin should be done. This assessment is done through two methods of laboratory measurement in serum sample and transcutaneous bilirubinometer. This descriptive study compared transcutaneous bilirubin assessment and laboratory serum bilirubin. Bilirubin level was assessed among 256 neonates admitted to the Qods Children's Hospital in Qazvin- Iran, because of neonatal indirect jaundice, through two methods of transcutaneous bilirubinometery from two sites of forehead and sternum and laboratory measurement of bilirubin in serum. The cases were non-hemolytic icteric term neonates weighing 2500 gram or more and had not received phototherapy or other treatments. Neonates with hemolytic forms of jaundice, sepsis and suspicious to metabolic disorders were excluded. Assessments by means of KJ-8000 transcutaneous bilirubinometer from two sites of forehead and sternum and through laboratory measurement of serum bilirubin were registered and analyzed. The results of the current study showed that there was a correlation of 0.82 between serum bilirubin and transcutaneous forehead bilirubin assessment and for the used device sensitivity of 0.844; specificity of 0.842, Youden Index of 0.709 and Shortest of 0.042 for a cut-off of 12.4 in bilirubin of participants. Furthermore, Likelihood Ratio positive and negative (LR) were 5.665 and 0.164, respectively and diagnostic Odds Ratio (LR+/LR-) was 34.56. Transcutaneous bilirubinometery can be considered as a reliable tool to assess bilirubin for the screening of neonatal jaundice in term neonates. PMID:26749233

  4. Trans-Cutaneous Bilirubinometery versus Serum Bilirubin in Neonatal Jaundice

    Directory of Open Access Journals (Sweden)

    Manoochehr Mahram

    2015-12-01

    Full Text Available Hyperbilirubinemia is a common problem in neonates and causes serious complications. Thus, serial measurements of bilirubin should be done. This assessment is done through two methods of laboratory measurement in serum sample and transcutaneous bilirubinometer. This descriptive study compared transcutaneous bilirubin assessment and laboratory serum bilirubin. Bilirubin level was assessed among 256 neonates admitted to the Qods Children’s Hospital in Qazvin- Iran, because of neonatal indirect jaundice, through two methods of transcutaneous bilirubinometery from two sites of forehead and sternum and laboratory measurement of bilirubin in serum. The cases were non-hemolytic icteric term neonates weighing 2500 gram or more and had not received phototherapy or other treatments. Neonates with hemolytic forms of jaundice, sepsis and suspicious to metabolic disorders were excluded. Assessments by means of KJ-8000 transcutaneous bilirubinometer from two sites of forehead and sternum and through laboratory measurement of serum bilirubin were registered and analyzed. The results of the current study showed that there was a correlation of 0.82 between serum bilirubin and transcutaneous forehead bilirubin assessment and for the used device sensitivity of 0.844; specificity of 0.842, Youden Index of 0.709 and Shortest of 0.042 for a cut-off of 12.4 in bilirubin of participants. Furthermore, Likelihood Ratio positive and negative (LR were 5.665 and 0.164, respectively and diagnostic Odds Ratio (LR+/LR- was 34.56. Transcutaneous bilirubinometery can be considered as a reliable tool to assess bilirubin for the screening of neonatal jaundice in term neonates.

  5. Transcutaneous Bilirubin Measurement in Preterm Neonates

    Directory of Open Access Journals (Sweden)

    Paymaneh Alizadeh Taheri

    2012-11-01

    Full Text Available Hyperbilirubinemia is a common problem during neonatal period especially in preterm neonates. Transcutaneous bilirubin measurement (TcB by special devices had been documented as an effective tool for predicting neonatal jaundice in full term neonate, but for preterm infants the present evidences are controversial. We carried out a prospective study in Shariati Hospital NICU. 126 paired TcB/total serum bilirubin (TSB measurements were obtained. TcB (on forehead and sternum were measured using JH2-1A device for every admitted preterm infant who clinically showed jaundice and TSB measurements was obtained within 30 min of TcB. 58 (46% were male and 68 (54% were female. The mean gestational age was 31 week and mean birth weight was 1728 ± 60 g. 30 percent of neonates were ill. The mean value obtained by TBS was 8.8 mg/dl and for frontal TcB was 8.2mg/dl and for sternal TcB was 7.4mg/dl. There were good correlation between TBS and TcB and the maximum correlation were seen in 33-37 weeks of gestation and birth weight more than 2500 g with forehead TcB measurement. Healthy preterm infants had significant correlation of TSB and TcB (r=0.56, P<0.001 and ill preterm neonate had r =0.82, P<0.001. The correlation between TBS and TcB with and without phototherapy was r=0.66, P=0.000 and r=0.69, P=0.000 respectively. Although TcB measurement may underestimate TBS but there is significant correlation between TcB and TBS in preterm cases even in ill neonate or who receiving phototherapy. This method can be used for determination of bilirbin level in preterm neonate and reduces the number of blood sampling.

  6. Atazanavir–bilirubin interaction: a pharmacokinetic–pharmacodynamic model

    Directory of Open Access Journals (Sweden)

    Lozano R

    2013-09-01

    Full Text Available Roberto Lozano,1 Nieves Domeque,2 Alberto-Fermin Apesteguia3 1Pharmacy Department, 2Psychiatry Department, Hospital Real Nuestra Señora de Gracia, 3Pharmacy Department, Hospital Clinico Universitario "Lozano Blesa", Zaragoza, Spain Purpose: The aim of this work was to analyze the atazanavir–bilirubin relationship, using a new mathematical approach to pharmacokinetic–pharmacodynamic models, for competitive drug interactions based on Michaelis–Menten equations. Patients and methods: Because atazanavir induces an increase of plasma bilirubin levels, in a concentration-dependent manner, we developed a mathematical model, based on increments of atazanavir and bilirubin concentrations at steady state, in HIV infected (HIV+ patients, and plotted the corresponding nomogram for detecting suboptimal atazanavir exposure. Results: By applying the obtained model, the results indicate that an absolute value or an increment of bilirubin at steady state below 3.8 µmol/L, are predictive of suboptimal atazanavir exposure and therapeutic failure. Conclusion: We have successfully implemented a new mathematical approach to pharmacokinetic–pharmacodynamic model for atazanavir–bilirubin interaction. As a result, we found that bilirubin plasma levels constitute a good marker of exposure to atazanavir and of viral suppression. Keywords: atazanavir, bilirubin, HIV/AIDS, pharmacodynamics, pharmacokinetics

  7. [Does bilirubin interfere with capillary electrophoresis of serum proteins?].

    Science.gov (United States)

    Hellara, Ilhem; Fekih, Ons; Triki, Sonia; Elmay, Ahlem; Neffati, Fadoua; Najjar, Mohamed Fadhel

    2014-01-01

    Capillary electrophoresis of serum proteins is a fast, reliable and simple technique, but many interference exist. The objective of our work is to study the interference of bilirubin on this technique; 70 icteric sera were analysed on Capillarys ™ (Sebia). A second electrophoresis was performed on 40 samples after bilirubin photodegradation. The bilirubin and serum proteins were determinated respectively by Jendrassik and Grof and biuret methods on Konélab 20i ™ (Thermo Electron Corporation). We found abnormal spreading of the albumin fraction of the anode side wich constitute sometimes an isolated fraction in the traditional area of pre-albumin migration. This fraction varies from 2.0 ± 2.0% (0.0 to 7.3%) or 0.98 ± 1.53 g/L (0 to 5.3 g/L) and it seems to be related to the direct bilirubin since, following overloading sera with a solution of bilirubin, no further fraction was recovered. An average decrease of bilirubin after photodegradation of 58 ± 17% (26-89%) is followed by a decrease in the same order 64 ± 38% (10-100%) of the additional fraction. Acetate cellulose electrophoresis of the same samples showed no variation. The high bilirubin levels seem modify slightly the electrophoretic profile. However the impact of the interference on the interpretation of electrophoretic trace is negligible. PMID:24492101

  8. Relationship between serum bilirubin levels and optic neuritis

    Institute of Scientific and Technical Information of China (English)

    DENG Juan; LIANG Xue-mei; ZHANG Xiu-lan; LING Shi-qi; YANG Ting-ting; LI Min; PENG Fu-hua

    2013-01-01

    Background Bilirubin is the end product of heme catabolism and has strong antioxidant properties.Serum bilirubin levels are reported to be reduced in patients with multiple sclerosis (MS) and neuromyelitis optica (NMO).The pathophysiology of optic neuritis (ON) resembles that of MS; however,the role of endogenous bilirubin in ON is unclear.The aim of this study is to measure serum bilirubin levels in patients with ON,and to investigate the correlation between ON and serum antioxidant status of bilirubin.Methods Serum levels of bilirubin were measured in 42 patients with ON,50 patients with multiple sclerosis (MS),48 patients with neuromyelitis optica (NMO) and 48 healthy control subjects.Results Serum total bilirubin (Tbil),direct bilirubin (Dbil) and indirect bilirubin (Ibil) levels in patients with ON were significantly lower than those in the healthy controls.However,no statistical significance was found between levels in the ON and MS,ON and NMO,and MS and NMO groups.In patients with ON,serum Tbil,Dbil,and Ibil levels were lower in those with recurrence or those with ON for a longer duration (>1 year).Moreover,Tbil,Dbil,and Ibil concentrations were lower in patients with papillitis than in those with retrobulbar type ON,but the differences were not statistically significant.Conclusions Low antioxidant status may exist in patients with ON.But serum levels of Tbil,Dbil,and Ibil did not correlate with clinical presentations,such as recurrence,duration of disease and subtypes of ON.Low antioxidant status already existed in MS or NMO patients before systemic symptoms appeared.

  9. Influence of bilirubin on surface tension properties of lung surfactant.

    OpenAIRE

    Amato, M; Schürch, S; Grunder, R; Bachofen, H.; Burri, P H

    1996-01-01

    AIM: To investigate the influence of bilirubin on the surface tension activity of a porcine derived (Curosurf) and synthetic (Exosurf) surfactant. METHODS: The captive bubble surfactometer at phospholipid doses of 0.5 mg/ml (low dose) and 1 mg/ml (high dose) in solutions of increasing bilirubin concentrations (0.25, 0.5, and 1.0 mg/ml) was used. RESULTS: Curosurf (without bilirubin) showed a higher surface f1p4ion activity than Exosurf, as shown by area compression of 30 (SD 0.6)% compared wi...

  10. Anti-Genotoxic Potential of Bilirubin In Vivo

    DEFF Research Database (Denmark)

    Wallner, Marlies; Antl, Nadja; Rittmannsberger, Barbara;

    2013-01-01

    The bile pigment bilirubin is a known antioxidant and is associated with protection from cancer and cardiovascular disease (CVD) when present in too strong concentrations. Unconjugated bilirubin (UCB) might also possess anti-genotoxic potential by preventing oxidative damage to DNA. Moderately...... elevated bilirubin levels are found in individuals with Gilbert syndrome and more severe in the hyperbilirubinemic Gunn rat model. This study was therefore aimed to assess the levels of oxidative damage to DNA in Gilbert syndrome subjects and Gunn rats compared to matched controls. Seventy-six individuals...

  11. Ibuprofen augments bilirubin toxicity in rat cortical neuronal culture.

    Science.gov (United States)

    Berns, Monika; Toennessen, Margit; Koehne, Petra; Altmann, Rodica; Obladen, Michael

    2009-04-01

    Premature infants are at risk for bilirubin-associated brain damage. In cell cultures bilirubin causes neuronal apoptosis and necrosis. Ibuprofen is used to close the ductus arteriosus, and is often given when hyperbilirubinemia is at its maximum. Ibuprofen is known to interfere with bilirubin-albumin binding. We hypothesized that bilirubin toxicity to cultured rat embryonic cortical neurons is augmented by coincubation with ibuprofen. Incubation with ibuprofen above a concentration of 125 microg/mL reduced cell viability, measured by methylthiazole tetrazolium reduction, to 68% of controls (p < 0.05). Lactate dehydrogenase (LDH) release increased from 29 to 38% (p < 0.01). The vehicle solution did not affect cell viability. Coincubation with 10 microM unconjugated bilirubin (UCB)/human serum albumin in a molar ratio of 3:1 and 250 microg/mL ibuprofen caused additional loss of cell viability and increased LDH release (p < 0.01), DNA fragmentation, and activated caspase-3. Preincubation with the pan-caspase inhibitor z-val-ala-asp-fluoromethyl ketone abolished ibuprofen- and UCB-induced DNA fragmentation. The study demonstrates that bilirubin in low concentration of 10 microM reduces neuron viability and ibuprofen increases this effect. Apoptosis is the underlying cell death mechanism.

  12. Relationship between bilirubin free radical and formation of pigment gallstone

    Institute of Scientific and Technical Information of China (English)

    Xiang-Tao Liu; Jian Hu

    2002-01-01

    In this paper, we summarize the main progresses made inour group in the field of the mechanism of pigment gallstoneformation. It was found that after treetment with freeradicals, bilirubin (BR) was changed into free radical itself,and a semiquinone free radical and a superoxide free radicalbound with metal were recognized, which was detected byESR (electron spin resonance). By the meana of NMR(nuclear magnetic resonance) and IR (Infra-red spectra), itwas postulated that bilirubin polymerized through thereaction between the vinyl group and the hydroxyl groupunder the attack of free radicals. It was also found thatbilirubin free radical were liable to calcify in a kinetic study.Because of its chemical properties, bilirubin free radical wasshown to be cytotoxic to hepetocyte, which wasdemonstrated based on the following facts: induction ofphospholipid peroxidation (LPO), leakage of lactatedehydrogenase (LDH) and decrease of glutathione. As tothe mechanism of bilirubin-induced cytotoxicity, it waspostulated that the main target of bilirubin free radical wasthe cell membrane, including phospholipid and membranebound proteins, especially spectrin, a content ofcytoskeleton. Based on the results mentioned above, it wasdeduced that bilirubin free radical is the key factor thatinitiates and promotes the formation of pigment gallstone,which is consistent with other researches in recent years.

  13. Study on Removal of Bilirubin with Magnetic Affinity Separation Technique

    Institute of Scientific and Technical Information of China (English)

    张凤宝; 王淑兰; 徐辉; 张国亮

    2003-01-01

    An affinity adsorbent, Cibacron Blue 3GA immobilized magnetic polyvinyl alcohol (PVA) microspheres was used for bilirubin removal taking the advantage of easy separation of magnetic sorbent from the biosystem.Fe3 O4 superparamagnetic particles was synthesized with hydrothermal reaction of ferrous chloride (FeC12) and ferric chloride (FeCl3). Such magnetic particles are then encapsulated in biocompatible PVA to form magnetic polymer microspheres sized from 2 to 15 nm with hydroxyl groups on its surface. Cibacron Blue 3GA, a dye-ligand, was covalently coupled with the polyvinyl alcohol through the nucleophilic reaction between the chloride of its triazine ring and the hydroxyl groups of PVA molecules under alkaline condition. The affinity adsorbent carried 21.1μmol Cibacron Blue 3GA per gram magnetic polymer microspheres was used to remove unconjugated and conjugated bilirubin from the solution which was composed of bilirubin or bilirubin and protein. After the adsorption, the adsorbent loaded with bilirubin was removed easily in the magnetic field.

  14. A Comparison between Transcutaneous Bilirubin (TcB and Total Serum Bilirubin (TSB Measurements in Term Neonates

    Directory of Open Access Journals (Sweden)

    Majid Mansouri

    2015-05-01

    Full Text Available Background: Transcutaneous bilirubinometry (TCB is a simple method for estimating bilirubin levels in neonates. This method is noninvasive, quick, and painless. We aimed to compare serum and cutaneous bilirubin measurements in term neonates.Method: In this descriptive cross-sectional study, 200 neonates with icter with birth weights of at least 2500 grams were studied. TCB was measured using a bilirubinometer three times on the forehead and mean levels were calculated. Then, during the subsequent 30 minutes blood samples were obtained and sent to the laboratory for determining the total serum bilirubin (TSB levels. Findings: Of the 200 neonates, 124 (62% were boys and 76 (38% were girls, with an age range of 1-22 days. The mean±SD serum and cutaneous bilirubin levels were 18.75±5.38 and 17.85±4.46 mg/dl, respectively. A high correlation (r=0.89 was observed between TSB and TCB. The sensitivity and specificity of cutaneous bilirubin measurement were 95.1% and 68%, respectively.Conclusions: Because of its high sensitivity, TCB can be a suitable tool for predicting neonatal icter. However, it is not a suitable substitute for TSB measurement in neonates at a high risk of jaundice.

  15. Effect of pH and temperature on the binding of bilirubin to human erythrocyte membranes

    Indian Academy of Sciences (India)

    H Rashid; Mohammad K Ali; S Tayyab

    2000-06-01

    Effect of pH and temperature on the binding of bilirubin to human erythrocyte membranes was studied by incubating the membranes at different pH and temperatures and determining the bound bilirubin. At all pH values, the amount of membrane-bound bilirubin increased with the increase in bilirubin-to-albumin molar ratios (B/As), being highest at lower pH values in all cases. Further, linear increase in bound bilirubin with the increase in bilirubin concentration in the incubate was observed at a constant B/A and at all pH values. However, the slope value increased with the decrease in pH suggesting more bilirubin binding to membranes at lower pH values. Increase in bilirubin binding at lower pH can be explained on the basis of increased free bilirubin concentration as well as more conversion of bilirubin dianion to monoanion. Temperature dependence of bilirubin binding to membranes was observed within the temperature range of 7°–60°C, showing minimum binding at 27°C and 37°C which increased on either side. Increase in bilirubin binding at temperatures lower than 20°C and higher than 40°C can be ascribed to the change in membrane topography as well as bilirubin-albumin interaction.

  16. Serum bilirubin kinetics in intermittent phototherapy of physiological jaundice.

    OpenAIRE

    Lau, S. P.; Fung, K P

    1984-01-01

    Thirty four term babies with physiological jaundice were subjected to continuous phototherapy and to two regimens of intermittent phototherapy. The difference in serum bilirubin kinetics between the three groups of treated babies was insignificant; a schedule of one in four hours of irradiation achieved the same treatment effect as continuous phototherapy.

  17. Nanofibrous polymeric beads from aramid fibers for efficient bilirubin removal.

    Science.gov (United States)

    Peng, Zihang; Yang, Ye; Luo, Jiyue; Nie, Chuanxiong; Ma, Lang; Cheng, Chong; Zhao, Changsheng

    2016-08-16

    Polymer based hemoperfusion has been developed as an effective therapy to remove the extra bilirubin from patients. However, the currently applied materials suffer from either low removal efficiency or poor blood compatibility. In this study, we report the development of a new class of nanofibrous absorbent that exhibited high bilirubin removal efficiency and good blood compatibility. The Kevlar nanofiber was prepared by dissolving micron-sized Kevlar fiber in proper solvent, and the beads were prepared by dropping Kevlar nanofiber solutions into ethanol. Owing to the nanofiborous structure of the Kevlar nanofiber, the beads displayed porous structures and large specific areas, which would facilitate the adsorption of toxins. In the adsorption test, it was noticed that the beads possessed an adsorption capacity higher than 40 mg g(-1) towards bilirubin. In plasma mimetic solutions, the beads still showed high bilirubin removal efficiency. Furthermore, after incorporating with carbon nanotubes, the beads were found to have increased adsorption capacity for human degradation waste. Moreover, the beads showed excellent blood compatibility in terms of a low hemolysis ratio, prolonged clotting times, suppressed coagulant activation, limited platelet activation, and inhibited blood related inflammatory activation. Additionally, the beads showed good compatibility with endothelial cells. In general, the Kevlar nanofiber beads, which integrated with high adsorption capacity, good blood compatibility and low cytotoxicity, may have great potential for hemoperfusion and some other applications in biomedical fields. PMID:27481656

  18. Nanofibrous polymeric beads from aramid fibers for efficient bilirubin removal.

    Science.gov (United States)

    Peng, Zihang; Yang, Ye; Luo, Jiyue; Nie, Chuanxiong; Ma, Lang; Cheng, Chong; Zhao, Changsheng

    2016-08-16

    Polymer based hemoperfusion has been developed as an effective therapy to remove the extra bilirubin from patients. However, the currently applied materials suffer from either low removal efficiency or poor blood compatibility. In this study, we report the development of a new class of nanofibrous absorbent that exhibited high bilirubin removal efficiency and good blood compatibility. The Kevlar nanofiber was prepared by dissolving micron-sized Kevlar fiber in proper solvent, and the beads were prepared by dropping Kevlar nanofiber solutions into ethanol. Owing to the nanofiborous structure of the Kevlar nanofiber, the beads displayed porous structures and large specific areas, which would facilitate the adsorption of toxins. In the adsorption test, it was noticed that the beads possessed an adsorption capacity higher than 40 mg g(-1) towards bilirubin. In plasma mimetic solutions, the beads still showed high bilirubin removal efficiency. Furthermore, after incorporating with carbon nanotubes, the beads were found to have increased adsorption capacity for human degradation waste. Moreover, the beads showed excellent blood compatibility in terms of a low hemolysis ratio, prolonged clotting times, suppressed coagulant activation, limited platelet activation, and inhibited blood related inflammatory activation. Additionally, the beads showed good compatibility with endothelial cells. In general, the Kevlar nanofiber beads, which integrated with high adsorption capacity, good blood compatibility and low cytotoxicity, may have great potential for hemoperfusion and some other applications in biomedical fields.

  19. Solar Irradiation of Bilirubin: An Experiment in Photochemical Oxidation

    Science.gov (United States)

    Pillay A. E.; Salih, F. M.

    2006-01-01

    An experiment in photochemical oxidation, which deals with bilirubin, a well-known light-sensitive biological compound that is pedagogically ideal for photochemical experiments at tertiary institutes, is presented. The experiment would benefit students in chemistry who eventually branch out into the health sciences or biochemistry.

  20. Clinical Significance of Serum Bilirubin Detection of Patient with Coronary Heart Disease

    Institute of Scientific and Technical Information of China (English)

    TAO Li; LUO Rui; ZHUANG Diankui

    2004-01-01

    Objective To explore the relation between serum bilirubin and coronary heart disease.Methods Compare the level of serum bilirubin among patients with coronary heart disease, patients with other disease and normal persons. Results The level of serum bilirubin of patients with coronary heart disease is higher than that of normal persons. Conclusion The reduction of density of serum bilirubin is one of the independent risk factors of coronary heart disease.

  1. Conformational changes in the bilirubin-human serum albumin complex at extreme alkaline pH

    DEFF Research Database (Denmark)

    Honoré, B; Frandsen, P C

    1986-01-01

    Light-absorption, c.d. and fluorescence of the bilirubin-albumin complex were investigated at extreme alkaline pH. Above pH 11.1 albumin binds the bilirubin molecule, twisted oppositely to the configuration at more neutral pH. On the basis of light-absorption it is shown that two alkaline...... between tryptophan-214 and bilirubin, and partly exposing the liganded bilirubin to the solvent. Udgivelsesdato: 1986-Jun-1...

  2. Bilirubin binding with liver cystatin induced structural and functional changes.

    Science.gov (United States)

    Mustafa, Mir Faisal; Bano, Bilqees

    2014-05-01

    Cysteine proteinases and their inhibitors play a significant role in the proteolytic environment of the cells. Inhibitors of cysteine proteinases regulate the activity of these enzymes helping in checking the degdration activity of cathepsins. The bilirubin secreated by liver cells can bind to cystatin present in the liver resulting in its functional inactivation, which may further lead to the increase in cathepsins level causing liver cirrhosis. In case of some pathophysiological conditions excess bilirubin gets accumulated e.g. in presence of Fasciola hepatica (liver fluke) in mammals and humans, leading to liver cirrhosis and possibly jaundice or normal blockade of bile duct causing increased level of bilirubin in blood. Protease-cystatin imbalance causes disease progression. In the present study, Bilirubin (BR) and liver cystatin interaction was studied to explore the cystatin inactivation and structural alteration. The binding interaction was studied by UV-absorption, FT-IR and fluorescence spectroscopy. The quenching of protein fluorescence confirmed the binding of BR with buffalo liver cystatin (BLC). Stern-Volmer analysis of BR-BLC system indicates the presence of static component in the quenching mechanism and the number of binding sites to be close to 1. The fluorescence data proved that the fluorescence quenching of liver cystatin by BR was the result of BR-cystatin complex formation. FTIR analysis of BR-Cystatin complex revealed change in the secondary structure due to perturbation in the microenvironment further confirmed by the decreased caseinolytic activity of BLC against papain. Fluorescence measurements also revealed quenching of fluorescence and shift in peak at different time intervals and at varying pH values. Photo-illumination of BR-cystatin complex causes change in the surrounding environment of liver cystatin as indicated by red-shift. The binding constant for BR-BLC complex was found to be 9.279 × 10(4) M(-1). The cystatin binding with

  3. Intestinal excretion of unconjugated bilirubin in man and rats with inherited unconjugated hyperbilirubinemia

    NARCIS (Netherlands)

    Kotal, P; VanderVeere, CN; Sinaasappel, M; Elferink, RO; Vitek, L; Brodanova, M; Jansen, PLM; Fevery, J

    1997-01-01

    Patients with Crigler-Najjar syndrome and Gunn rats cannot form bilirubin glucuronides owing to a lack of bilirubin UDP-glucuronosyltransferase activity. Because increased serum and tissue bilirubin levels remain constant, an alternative excretory route has to substitute for this deficiency. Gunn ra

  4. Determination of bilirubin by thermal lens spectrometry and studies of its transport into hepatic cells

    Science.gov (United States)

    Margon, A.; Terdoslavich, M.; Cocolo, A.; Decorti, G.; Passamonti, S.; Franko, M.

    2005-06-01

    The liver is responsible for clearance of bilirubin, the end product of heme catabolism, from the bloodstream. The main aim of our investigation was to determine the role of the carrier protein bilitranslocase in bilirubin uptake into the liver. Our experiments consisted of exposing cell cultures to bilirubin solutions under different conditions and measuring the uptake of bilirubin into the cells. However, since bilirubin is only slightly soluble in aqueous solution (pH 7.4), we had to use bilirubin concentrations that are far below the limit of detection of the commonly used techniques (e.g. LOD for HPLC with UV-Vis detection \\cong 10 μM). TLS showed up to be a suitable technique for investigation of bilirubin uptake with an LOD of 2 nM. Under basal conditions, bilirubin uptake did not occur. However, increase of cytosolic NADH due to catabolism of specific substrates (e.g. lactate or ethanol) seemed to trigger bilirubin uptake. Furthermore, bilirubin uptake was completely inhibited by addition of specific anti-bilitranslocase antibodies. We can thus infer that, under these conditions, bilitranslocase is the main bilirubin transporter.

  5. Bilirubin Neurotoxicity in Preterm Infants: Risk and Prevention

    OpenAIRE

    Bhutani, Vinod K.; Wong, Ronald J

    2013-01-01

    Hemolytic conditions in preterm neonates, including Rhesus (Rh) disease, can lead to mortality and long-term impairments due to bilirubin neurotoxicity. Universal access to Rh immunoprophylaxis, coordinated perinatal-neonatal care, and effective phototherapy has virtually eliminated the risk of kernicterus in many countries. In the absence of jaundice due to isoimmunization and without access to phototherapy or exchange transfusion (in 1955), kernicterus was reported at 10.1%, 5.5%, and 1.2% ...

  6. A New Bilirubin Concentration Detection Method by Light Reflection

    CERN Document Server

    Subasilar, B

    1999-01-01

    A new and simple method of blood bilirubin detection through light reflection from skin is developed. The basic improvement over the existing methods is in the design of the light emitter and detector geometry which facilitates a two-stream plane parallel homogenous medium solution to the emitting-scatterig radiative transfer equation. The forward peak in the scattering phase function that is characteristic of water droplets and water filled media is accounted for through a proper method named delta-Eddington approximation.

  7. Bilirubin: an endogenous molecule with antiviral activity in vitro.

    Directory of Open Access Journals (Sweden)

    Rosaria eSantangelo

    2012-03-01

    Full Text Available Bilirubin-IX-alpha (BR is the final product of heme metabolism through the heme oxygenase/biliverdin reductase (HO/BVR system. Previous papers reported on the microbicidal effects of the HO by-products biliverdin-IX-alpha, carbon monoxide and iron, through either direct or indirect mechanisms. In this paper the evidence of a virucidal effect of BR against human herpes simplex virus type 1 (HSV-1 and the enterovirus EV71 was provided. Bilirubin-IX-alpha, at concentrations 1-10 µM, close to those found in blood and tissues, significantly reduced HSV-1 and EV71 replication in Hep-2 and Vero cell lines, respectively. Bilirubin-IX-alpha inhibited viral infection of Hep-2 and Vero cells when given 2 hours before, concomitantly and 2 hours after viral infection. Furthermore, BR retained its antiviral activity even complexed with a saturating concentration of human serum-albumin. Moreover, 10 µM BR increased the formation of nitric oxide and the phosphorylation of JNK in Vero and Hep-2 cell lines, respectively, thus implying a role of these two pathways in the mechanism of antiviral activity of the bile pigment. In conclusion, these results support the antiviral effect of BR against HSV-1 and enterovirus in vitro, and put the basis for further basic and clinical studies to understand the real role of BR as an endogenous antiviral molecule.

  8. Multistimuli-Responsive Bilirubin Nanoparticles for Anticancer Therapy.

    Science.gov (United States)

    Lee, Yonghyun; Lee, Soyoung; Lee, Dong Yun; Yu, Byeongjun; Miao, Wenjun; Jon, Sangyong

    2016-08-26

    Although stimuli-responsive materials hold potential for use as drug-delivery carriers for treating cancers, their clinical translation has been limited. Ideally, materials used for the purpose should be biocompatible and nontoxic, provide "on-demand" drug release in response to internal or external stimuli, allow large-scale manufacturing, and exhibit intrinsic anticancer efficacy. We present multistimuli-responsive nanoparticles formed from bilirubin, a potent endogenous antioxidant that possesses intrinsic anticancer and anti-inflammatory activity. Exposure of the bilirubin nanoparticles (BRNPs) to either reactive oxygen species (ROS) or external laser light causes rapid disruption of the BRNP nanostructure as a result of a switch in bilirubin solubility, thereby releasing encapsulated drugs. In a xenograft tumor model, BRNPs loaded with the anticancer drug doxorubicin (DOX@BRNPs), when combined with laser irradiation of 650 nm, significantly inhibited tumor growth. This study suggests that BRNPs may be used as a drug-delivery carrier as well as a companion medicine for effectively treating cancers. PMID:27485478

  9. Spectroscopic studies on the interaction of bilirubin with liver cystatin.

    Science.gov (United States)

    Shah, Aaliya; Bano, Bilqees

    2011-02-01

    Studies on the role of endogenous metabolites such as bilirubin and their interactions with biomolecules have attracted considerable attention over the past several years. In this work, the interaction of bilirubin (BR) with purified goat liver cystatin (LC) was studied using fluorescence and ultraviolet (UV) spectroscopy. The fluorescence data proved that the fluorescence quenching of liver cystatin by BR was the result of BR-cystatin complex formation. Stern-Volmer analysis of fluorescence quenching data showed the binding constant to be 9.27 x 10⁴ M⁻¹ and the number of binding sites to be close to unity. The conformation of the BR-cystatin complex was found to change upon varying the pH of the complex. The BR-cystatin complex was found to have reduced papain inhibitory activity. Photo-illumination of BR-cystatin complex causes perturbation in the micro-environment of goat liver cystatin as indicated by red-shift. This report summarizes our research efforts to reveal the mechanism of interaction of bilirubin with liver cystatin.

  10. Bilirubin binding with liver cystatin induced structural and functional changes.

    Science.gov (United States)

    Mustafa, Mir Faisal; Bano, Bilqees

    2014-05-01

    Cysteine proteinases and their inhibitors play a significant role in the proteolytic environment of the cells. Inhibitors of cysteine proteinases regulate the activity of these enzymes helping in checking the degdration activity of cathepsins. The bilirubin secreated by liver cells can bind to cystatin present in the liver resulting in its functional inactivation, which may further lead to the increase in cathepsins level causing liver cirrhosis. In case of some pathophysiological conditions excess bilirubin gets accumulated e.g. in presence of Fasciola hepatica (liver fluke) in mammals and humans, leading to liver cirrhosis and possibly jaundice or normal blockade of bile duct causing increased level of bilirubin in blood. Protease-cystatin imbalance causes disease progression. In the present study, Bilirubin (BR) and liver cystatin interaction was studied to explore the cystatin inactivation and structural alteration. The binding interaction was studied by UV-absorption, FT-IR and fluorescence spectroscopy. The quenching of protein fluorescence confirmed the binding of BR with buffalo liver cystatin (BLC). Stern-Volmer analysis of BR-BLC system indicates the presence of static component in the quenching mechanism and the number of binding sites to be close to 1. The fluorescence data proved that the fluorescence quenching of liver cystatin by BR was the result of BR-cystatin complex formation. FTIR analysis of BR-Cystatin complex revealed change in the secondary structure due to perturbation in the microenvironment further confirmed by the decreased caseinolytic activity of BLC against papain. Fluorescence measurements also revealed quenching of fluorescence and shift in peak at different time intervals and at varying pH values. Photo-illumination of BR-cystatin complex causes change in the surrounding environment of liver cystatin as indicated by red-shift. The binding constant for BR-BLC complex was found to be 9.279 × 10(4) M(-1). The cystatin binding with

  11. Ambivalent property of bilirubin in human bile juice

    Directory of Open Access Journals (Sweden)

    Anna Blázovics, Péter Sípos, Ferenc Örsi,* Mervat Abdel Rahman

    2005-03-01

    Full Text Available Gallstones are formed as a result of many metabolic disorders e.g. chronic haemolytic anaemia, diabetes mellitus, ileal diseases, short bowel syndrome, gluten sensitive enteropathy, elevated serum lipids or Crohn's disease. The relationship between gallstone disease and free radical reactions is not known exactly even today. Free radicals are involved in many clinical conditions e.g. in hyperlipidemia and in fatty liver. Oxygen free radicals are produced and accumulated while the function of mitochondrial and microsomal electron transport or in peroxisomes and the activated arachidonic acid cascade. Spontaneous lipid peroxidation and oxygen free radical products of respiratory burst of Kupffer cells can be added to peroxide pool of liver tissue. Tissues, cells and subcellular particles exhibit different specific defence activities in pathological processes, which involve free radicals. The activity of microsomal P450 enzyme system and the microsomal structure are changed during pathological free radical attack and the cholesterol/bile acid ratio in bile juice is also altered. At the same time bilirubin metabolism can also be modified. Bile samples of 88 cholecystectomysed patients in both sexes (male: 29, female: 59 were examined. HPLC analysis (HP1090 liquid chromatograph with diode array detector was used for the detection of free bilirubin and bilirubin derivates. HP5890 gas chromatograph and flame ionization detector was used for fatty acid analysis. The induced chemiluminescence intensity was also determined in bile juice with (Berthold Lumat 9501 luminometer. As results show, the occurrence of C18:1 9, C18:2 6, C20:4 6 fatty acids were in high percentage in gallbladder bile in every case of randomly chosen 17 cholecystectomysed patients in both sexes suffered from cholecystitis chronica with gallstone. Lipid peroxidation products (diene conjugates and malondialdehyde were detected in all cases of bile as well. Mathematical statistical

  12. Depurative capacity of molecular adsorbent recycling system (MARS): A focus on bilirubin removal.

    Science.gov (United States)

    Gong, D; Cruz, D; Ronco, C

    2008-10-01

    The molecular adsorbent recycling system (MARS) is now widely used in the treatment of patients with hepatic failure (HF). A great deal of interest has been directed toward its effect on clinical outcome, whereas its depurative capacity also needs attention. Bilirubin, a tightly albumin-bound toxin accumulating in patients with HF, is regarded as a surrogate to evaluate the depurative capacity of albumin-bound toxins by blood purification modalities. The removal of bilirubin by MARS is difficult to predict, because both the clearance of bilirubin and the reduction ratio of bilirubin after a single session differ between patients and sessions. A reduction of depurative capacity over the course of a treatment is observed. Furthermore, the later sessions are likely less efficient than previous ones. It cannot be taken for granted that the reduction of depurative capacity is due to the saturation and reduced efficiency of the adsorbent columns used in MARS. The answer lies in the property of bilirubin/albumin binding. The removal of bilirubin by MARS is a diffusion process, dependent on the free bilirubin concentration. Bilirubin binds to albumin in 3 ways with different affinity. High-affinity binding bilirubin is difficult to dissociate from albumin and is accompanied by a smaller free fraction, which means it is also difficult for MARS to remove. The factors affecting the free fraction of bilirubin will impact on bilirubin removal by MARS. Among them, the molar ratio of bilirubin to albumin is the most important one. Other factors include the interaction of other agents with bilirubin/albumin binding, the albumin concentration, plasma ion strength, and pH. PMID:19009505

  13. Association between flavonoid-rich fruit and vegetable consumption and total serum bilirubin.

    Science.gov (United States)

    Loprinzi, Paul D; Mahoney, Sara E

    2015-03-01

    Emerging work demonstrates that serum bilirubin is a novel biomarker implicated in cardiovascular and metabolic diseases. However, we have a limited understanding of the influence of flavonoid-rich fruit and vegetable consumption on bilirubin levels, which was the purpose of this study. Data from the 2003 to 2006 National Health and Nutrition Examination survey were used (n = 1783; 18-85 years of age), with analyses performed in 2014. Total serum bilirubin was measured from a blood sample. Using a food frequency questionnaire (FFQ), a flavonoid index variable was created summing the frequency of consumption of flavonoid-rich foods. After adjustments, greater consumption of flavonoid-rich fruits and vegetables was positively associated with bilirubin levels. Our findings suggest an association between flavonoid-rich fruit and vegetable consumption and bilirubin levels. If confirmed by prospective and experimental studies, then regular consumption of flavonoid-rich fruits and vegetables should be promoted to increase levels of bilirubin.

  14. "The effect of fluid supplementation on serum bilirubin level during phototerapy in term infants "

    OpenAIRE

    Torkaman M; Afsharpeyman SH; Khalili Matinzadeh Z; Amirsalary S; Kavehmanesh Z; Hashemi S.A.

    2007-01-01

    Background: Jaundice is a common and benign problem in neonatal period. Several therapeutic procedures for decreasing of serum bilirubin level has been recommended. phototherapy is most common them. Our goal Form this study is the evaluation of serum therapy effects in decreasing of serum bilirubin concentration in icteric infants that are treated with phototherapy. Methods: This is a prospective clinical trial in Najmeih Hospital in 2002. In this study 80 term icteric infants with bilirubin ...

  15. Dexmedetomidine Attenuates Bilirubin-Induced Lung Alveolar Epithelial Cell Death In Vitro and In Vivo*

    OpenAIRE

    Cui, Jian; Zhao, Hailin; Yi, Bin; Zeng, Jing; Lu, Kaizhi; Ma, Daqing

    2015-01-01

    Objective: To investigate bilirubin-induced lung alveolar epithelial cell injury together with the protection afforded by dexmedetomidine. Design: Prospective, randomized, controlled study. Setting: Research laboratory. Subjects: Sprague Dawley rats. Interventions: Alveolar epithelial A549 cell lines were cultured and received bilirubin (from 0 to 160 μM) to explore the protective pathway of dexmedetomidine on bilirubin-induced alveolar epithelial cell injury assessed by immunochemistry and f...

  16. In vitro displacement of bilirubin by antibiotics and 2-hydroxybenzoylglycine in newborns.

    OpenAIRE

    Wadsworth, S J; Suh, B

    1988-01-01

    Hyperbilirubinemia is frequently observed in neonates, and serious neurological complications such as kernicterus can be precipitated when the concentration of unconjugated bilirubin is abnormally increased. The administration of drugs which bind to albumin and compete with bilirubin can increase the possibility of such a complication. To test the bilirubin-displacing activity of pharmacological agents that are used with newborns, 52 antimicrobial agents were investigated in vitro. A glycine ...

  17. An hour-specific transcutaneous bilirubin nomogram for Mongolian neonates

    OpenAIRE

    Akahira-Azuma, Moe; Yonemoto, Naohiro; Mori, Rintaro; Hosokawa, Shinichi; Matsushita, Takeji; Sukhbat, Khulan; Nansal, Gerelmaa; Bavuusuren, Bayasgalantai; Shonkhuuz, Enkhtur

    2015-01-01

    Transcutaneous bilirubin (TcB) nomograms have been developed for different populations. However, the TcB level, rate of rise and peak varies among countries and ethnicities. The aim of this study was to establish an hour-specific TcB nomogram for healthy term and late preterm Mongolian neonates during the first 144 h after birth. A total of 5084 TcB measurements from 1297 healthy neonates (gestational age ≥35 weeks, birth weight ≥2000 g) were obtained from October 2012 to October 2013. All me...

  18. Stopped-flow studies of spectral changes in bilirubin-human serum albumin following an alkaline pH jump and following binding of bilirubin

    DEFF Research Database (Denmark)

    Honoré, B

    1987-01-01

    A stopped-flow technique was used to study the spectral changes occurring in bilirubin-albumin following a pH jump as well as following binding of bilirubin at 25 degrees C. The changes were studied in two wavelength ranges, 280-310 nm (tyrosine residues) and 400-510 nm (bound bilirubin......). The changes were analyzed according to a scheme of consecutive unimolecular reactions. Spectral monitoring of a pH jump from 11.3 to 11.8 reveals that the bilirubin-albumin complex changes its structure in several steps. The UV absorption spectra show that 3.8 tyrosine residues ionize in the first step, 2.......5 in the second, none in the third, and 0.8 in the fourth and following steps. The visible absorption spectrum of bound bilirubin changes in the second, third, and fourth steps. The bilirubin spectra of the different bilirubin-albumin complexes occurring in the transition show a common isosbestic point at 445 nm...

  19. 21 CFR 862.1115 - Urinary bilirubin and its conjugates (nonquantitative) test system.

    Science.gov (United States)

    2010-04-01

    ... HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES CLINICAL CHEMISTRY AND CLINICAL TOXICOLOGY DEVICES Clinical Chemistry Test Systems § 862.1115 Urinary bilirubin and its conjugates (nonquantitative)...

  20. 21 CFR 862.1113 - Bilirubin (total and unbound) in the neonate test system.

    Science.gov (United States)

    2010-04-01

    ... HUMAN SERVICES (CONTINUED) MEDICAL DEVICES CLINICAL CHEMISTRY AND CLINICAL TOXICOLOGY DEVICES Clinical Chemistry Test Systems § 862.1113 Bilirubin (total and unbound) in the neonate test system....

  1. Biochemical measurement of bilirubin with an evanescent wave optical sensor

    Science.gov (United States)

    Poscio, Patrick; Depeursinge, Christian D.; Emery, Y.; Parriaux, Olivier M.; Voirin, Guy

    1991-09-01

    Optical sensing techniques can be considered as powerful information sources on the biochemistry of tissue, blood, and physiological fluids. Various sensing modalities can be considered: spectroscopic determination of the fluorescence or optical absorption of the biological medium itself, or more generally, of a reagent in contact with the biological medium. The principle and realization of the optical sensor developed are based on the use of polished fibers: the cladding of a monomode fiber is removed on a longitudinal section. The device can then be inserted into an hypodermic needle for in-vivo measurements. Using this minute probe, local measurements of the tissue biochemistry or metabolic processes can be obtained. The sensing mechanism is based on the propagation of the evanescent wave in the tissues or reagent: the proximity of the fiber core allows the penetration of the model field tail into the sensed medium, with a uniquely defined field distribution. Single or multi-wavelength analysis of the light collected into the fiber yields the biochemical information. Here an example of this sensing technology is discussed. In-vitro measurement of bilirubin in gastric juice demonstrates that the evanescent wave optical sensor provides a sensitivity which matches the physiological concentrations. A device is proposed for in-vivo monitoring of bilirubin concentration in the gastro-oesophageal tract.

  2. Clinical system model for monitoring the physiological status of jaundice by extracting bilirubin components from skin diffuse reflectance spectra

    Science.gov (United States)

    Kumar, Alla S.; Clark, Joseph; Beyette, Fred R., Jr.

    2009-02-01

    Neonatal jaundice is a medical condition which occurs in newborns as a result of an imbalance between the production and elimination of bilirubin. The excess bilirubin in the blood stream diffuses into the surrounding tissue leading to a yellowing of the skin. As the bilirubin levels rise in the blood stream, there is a continuous exchange between the extra vascular bilirubin and bilirubin in the blood stream. Exposure to phototherapy alters the concentration of bilirubin in the vascular and extra vascular regions by causing bilirubin in the skin layers to be broken down. Thus, the relative concentration of extra vascular bilirubin is reduced leading to a diffusion of bilirubin out of the vascular region. Diffuse reflectance spectra from human skin contains physiological and structural information of the skin and nearby tissue. A diffuse reflectance spectrum must be captured before and after blanching in order to isolate the intravascular and extra vascular bilirubin. A new mathematical model is proposed with extra vascular bilirubin concentration taken into consideration along with other optical parameters in defining the diffuse reflectance spectrum from human skin. A nonlinear optimization algorithm has been adopted to extract the optical properties (including bilirubin concentration) from the skin reflectance spectrum. The new system model and nonlinear algorithm have been combined to enable extraction of Bilirubin concentrations within an average error of 10%.

  3. Protein-Support Interactions for Rationally Designed Bilirubin Oxidase Based Cathode: A Computational Study.

    Science.gov (United States)

    Matanovic, Ivana; Babanova, Sofia; Chavez, Madelaine Seow; Atanassov, Plamen

    2016-04-21

    An example of biocathode based on bilirubin oxidase (BOx) was used to demonstrate how density functional theory can be combined with docking simulations in order to study the interface interactions between the enzyme and specifically designed electrode surface. The electrode surface was modified through the adsorption of bilirubin, the natural substrate for BOx, and the prepared electrode was electrochemically characterized using potentiostatic measurements. The experimentally determined current densities showed that the presence of bilirubin led to significant improvement of the cathode operation. On the basis of the computationally calculated binding energies of bilirubin to the graphene support and BOx and the analysis of the positioning of bilirubin relative to the support and T1 Cu atom of the enzyme, we hypothesize that the bilirubin serves as a geometric and electronic extension of the support. The computational results further confirm that the modification of the electrode surface with bilirubin provides an optimal orientation of BOx toward the support but also show that bilirubin facilitates the interfacial electron transfer by decreasing the distance between the electrode surface and the T1 Cu atom. PMID:27015361

  4. EXPERIMENTAL AND CLINICAL STUDY ON BILIRUBIN NEUROTOXICITY DETECTED BY VISUAL EVOKED POTENTIALS TO FLASH

    Institute of Scientific and Technical Information of China (English)

    贲晓明; 秦玉明; 吴圣楣; 张惠民; 陈舜年; 夏振炜

    2001-01-01

    Objective Evaluate the sensitivity and reliability of visual evoked potential to flash ( FVEP ) in detecting bilirubin neurotoxicity and approach the risk parameters of bilirubin neurotoxicity in hyperbilirubinernia newborns. Methods Based on the successful establishment of animal models for acute bilirubin encephalopathy by intraperitoneal infusion of bilirubin with a dosage of 100~200μg /g body weight to 1-weekold guinea pigs, the F-VEP was recorded in animal models and human neonates with hyperbilirubinemia, and the sensitivity and reliability of F-VEP in detecting bilirubin neurotoxicity were evaluated. Results F-VEP features and its P1 latency significantly correlated to brain adenosine triphosphate (ATP) level, neurobehavioral and neuropathological changes in experimental bilirubin encephalopathy ; neonates with hyperbilirubinemia showed significant F-VEP changes characterized by absence of P1 or P1 latency prolonged in 1~7-dayold newborns, especially when the jaundice was caused by immunoincompatibility and infectious diseases. Conclusion F-VEP would be a good discriminator for bilirubin neurotoxicity, and can become a promising technique in monitoring bilirubin encephalopathy.

  5. Thyroid hormone uptake in cultured rat anterior pituitary cells: effects of energy status and bilirubin

    NARCIS (Netherlands)

    F.W.J.S. Wassen (Frank); E.P.C.M. Moerings (Ellis); H. van Toor (Hans); G. Hennemann; M.E. Everts (Maria)

    2000-01-01

    textabstractTransport of thyroxine (T(4)) into the liver is inhibited in fasting and by bilirubin, a compound often accumulating in the serum of critically ill patients. We tested the effects of chronic and acute energy deprivation, bilirubin and its precursor biliverdi

  6. New Sorbent for Bilirubin Removal from Human Plasma: Albumin Immobilized Microporous Membranous PTFE Capillaries

    Institute of Scientific and Technical Information of China (English)

    Lei ZHANG; Gu JIN

    2005-01-01

    In this study, we developed a tailored capillary sorbent for bilirubin removal. For immobilized bioligand, capillaries were grafted with epoxy groups using RIGP. The HSA immobilized capillaries has a high affinity adsorption capacity (71.2 mg bilirubin/g polymer) and a shorter adsorption equilibrium time (about 60 min).

  7. Association of bilirubin and protein thiols in relation to copper and ceruloplasmin in hyperbilirubinemic patients

    Institute of Scientific and Technical Information of China (English)

    Mungli Prakash; Jeevan K Shetty; Roshan D'Souza; Suhasa Upadhya; Vijay Kumar

    2009-01-01

    Objective:Bilirubin is a double edged sword in biological system,acting as a toxic molecule and cytoprotecrant.Unconjugated bilirubin is proved to show antioxidant activity in vitro and in vivo.In the current work we tried to know the relationship between both conjugated and unconjugated bilirubin with copper and protein thiols in patients with hyperbilirnbinemia.Methods:Study was conducted on 56 hyperbilirubinemic cases and 56 healthy controls.Serum copper,ceruloplasmin,protein thiols,total bilirubin,conjugated and unconjugated bilirubin,unconjugated bilimbin/albumin ratio,total protein,albumin,AST,ALT and ALP were estimated.Results:There was significant increase in serum copper,total bilirubin,conjugated and unconjugated bilimbin.uriconjugated bilirubin/albumin ratio,AST,ALT,and ALP,and decrease in serum ceruloplasmin,protein thiols,total protein,and albumin in hyperbilimbinemic cases when compared to healthy controls.Conjugated bilimbin correlated positively with liver enzymes AST and ALP,and negatively with protein thials,total protein and albumin.Unconjugated bilirubin correlated positively with ALT.Protein thiols correlated negatively with copper and positively with ceruloplasmin,and also correlated negativelv with liver enzymes like AST,ALT and ALP,and positively with total protein and albumin.Conclusion:Combination of elevated levels of trace elements like copper and availability of reducing agent like bilimbin may prove deleterious by generating free radicals.

  8. Metabolism of bilirubin by human cytochrome P450 2A6

    Energy Technology Data Exchange (ETDEWEB)

    Abu-Bakar, A' edah, E-mail: a.abubakar@uq.edu.au [The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 4072 Brisbane, Queensland (Australia); Arthur, Dionne M. [The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 4072 Brisbane, Queensland (Australia); Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, Adelaide (Australia); Wikman, Anna S. [The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 4072 Brisbane, Queensland (Australia); Department of Pharmaceutical Biosciences, Uppsala University, SE-75123 Uppsala (Sweden); Rahnasto, Minna; Juvonen, Risto O.; Vepsäläinen, Jouko; Raunio, Hannu [School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, POB 1627, 70211 Kuopio (Finland); Ng, Jack C. [The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 4072 Brisbane, Queensland (Australia); Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, Adelaide (Australia); Lang, Matti A. [The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 4072 Brisbane, Queensland (Australia)

    2012-05-15

    The mouse cytochrome P450 (CYP) 2A5 has recently been shown to function as hepatic “Bilirubin Oxidase” (Abu-Bakar, A., et al., 2011. Toxicol. Appl. Pharmacol. 257, 14–22). To date, no information is available on human CYP isoforms involvement in bilirubin metabolism. In this paper we provide novel evidence for human CYP2A6 metabolising the tetrapyrrole bilirubin. Incubation of bilirubin with recombinant yeast microsomes expressing the CYP2A6 showed that bilirubin inhibited CYP2A6-dependent coumarin 7-hydroxylase activity to almost 100% with an estimated K{sub i} of 2.23 μM. Metabolite screening by a high-performance liquid chromatography/electrospray ionisation mass spectrometry indicated that CYP2A6 oxidised bilirubin to biliverdin and to three other smaller products with m/z values of 301, 315 and 333. Molecular docking analyses indicated that bilirubin and its positively charged intermediate interacted with key amino acid residues at the enzyme's active site. They were stabilised at the site in a conformation favouring biliverdin formation. By contrast, the end product, biliverdin was less fitting to the active site with the critical central methylene bridge distanced from the CYP2A6 haem iron facilitating its release. Furthermore, bilirubin treatment of HepG2 cells increased the CYP2A6 protein and activity levels with no effect on the corresponding mRNA. Co-treatment with cycloheximide (CHX), a protein synthesis inhibitor, resulted in increased half-life of the CYP2A6 compared to cells treated only with CHX. Collectively, the observations indicate that the CYP2A6 may function as human “Bilirubin Oxidase” where bilirubin is potentially a substrate and a regulator of the enzyme. -- Highlights: ► Human CYP2A6 interacts with bilirubin with a high affinity. ► Bilirubin docking to the CYP2A6 active site is more stable than biliverdin docking. ► Recombinant CYP2A6 microsomes metabolised bilirubin to biliverdin. ► Bilirubin increased the hepatic

  9. Multiple binding of bilirubin to human serum albumin and cobinding with laurate

    DEFF Research Database (Denmark)

    Sato, H; Honoré, B; Brodersen, R

    1988-01-01

    Numerical analysis of multiple binding of two ligands to one carrier has been accomplished, using the principle of several sets of acceptable binding constants, with bilirubin-laurate-albumin as an example. Binding of bilirubin to defatted human serum albumin was investigated by a spectroscopic...... method, based upon a difference of light absorption spectrum for free and bound bilirubin. The observations were supplemented with previous data from an independent technique, measurement of oxidation rates of free bilirubin with hydrogen peroxide and peroxidase. A continuous isotherm was obtained......, showing binding of at least 4 mol bilirubin per mole albumin with the following stoichiometric binding constants, 1.11 X 10(8), 1.7 X 10(7), 8 X 10(5), and 4 X 10(4) M-1 at pH 8.2, ionic strength 0.15 M, 25 degrees C. The binding is anticooperative at all steps. A saturation level was not reached...

  10. Increased conjugated bilirubin is sufficient to initiate screening for biliary atresia

    DEFF Research Database (Denmark)

    Madsen, Stine Skipper; Kvist, Nina; Thorup, Jørgen

    2015-01-01

    cirrhosis. The Danish Health and Medicines Authority (DHMA) demands diagnostic evaluation of children with elevated level of serum bilirubin after two weeks of age. Biliary atresia has to be excluded if conjugated bilirubin level is above than 20 μmol/l, and/or more than 20% of total bilirubin......: During the period, 73 patients where operated with a portoenterostomy ad modum Kasai. Patients older than 84 days at the time of operation were excluded, 54 patients were available for analysis. Conjugated bilirubin in μmol/l and the percentage value were significantly above the DHMA threshold limit......: mean 129.7 μmol/l (42-334 μmol/l) and 73% (28-97%), respectively. CONCLUSION: The total amount of conjugated bilirubin above 20 μmol/l is sufficient to require further evaluation for biliary atresia. The percentage value is unnecessary and may cause confusion. FUNDING: none. TRIAL REGISTRATION...

  11. [Haemolysis and turbidity influence on three analysis methods of quantitative determination of total and conjugated bilirubin on ADVIA 1650].

    Science.gov (United States)

    Gobert De Paepe, E; Munteanu, G; Schischmanoff, P O; Porquet, D

    2008-01-01

    Plasma bilirubin testing is crucial to prevent the occurrence of neonatal kernicterus. Haemolysis may occur during sampling and interfere with bilirubin determination. Moreover, lipidic infusions may induce plasma lipemia and also interfere with bilirubin measurement. We evaluated the interference of haemolysis and lipemia with three methods of total and direct bilirubin measurement adaptated on an Advia 1650 analyser (Siemens Medical Solutions Diagnostics) : Synermed (Sofibel), Bilirubin 2 (Siemens) and Bilirubin Auto FS (Diasys). The measurement of total bilirubin was little affected by haemolysis with all three methods. The Bilirubin 2 (Siemens) method was the less sensitive to haemolysis even at low bilirubin levels. The measurement of conjugated bilirubin was significantly altered by low heamoglobin concentrations for Bilirubin Auto FS(R) (30 microM or 0,192 g/100 mL haemoglobin) and for Synermed (60 microM or 0,484 g/100 mL haemoglobin). In marked contrast, we found no haemoglobin interference with the Direct Bilirubin 2 reagent which complied with the method validation criteria from the French Society for Biological Chemistry. The lipemia up to 2 g/L of Ivelip did not affect neither the measurement of total bilirubin for all three methods nor the measurement of conjugated bilirubin with the Diasys and Siemens reagents. However, we observed a strong interference starting at 0,5 g/L of Ivelip with the Synermed reagent. Our data suggest that both Siemens and Diasys methods allow to measure accurately total and conjugated bilirubin in hemolytic and lipemic samples, nevertheless, the Siemens methodology is less affected by these interferences.

  12. Cobinding of bilirubin and laurate to human serum albumin: spectroscopic characterization of stoichiometric complexes

    DEFF Research Database (Denmark)

    Honoré, B; Sato, H; Brodersen, R

    1988-01-01

    Light absorption and CD spectra of bound bilirubin and albumin fluorescence spectra have been recorded from mixtures containing albumin, A, bilirubin, B, and laurate, L, in Tris-NaCl buffer at pH 8.2, 25 degrees C. Concentrations of the corresponding stoichiometric complexes, ABiLj, for i = 0....... Brodersen et al. (1987) Eur. J. Biochem. 169, 487-495). The results were utilized at the microscopic level to investigate ligand-induced conformational changes. When laurate was bound to AB, a decrease of the distance between Trp-214 and the bound bilirubin occurred, as measured according to Förster...

  13. Preparation of Aminated Macroporous Polyvinyl Alcohol Resins and Evaluation for Bilirubin Adsorption

    Institute of Scientific and Technical Information of China (English)

    WANG Wei-chao; ZHANG Sheng-nan; HU Yue-han; XIE Hui; OU Lai-liang; YU Yao-ting; KONG De-ling; GU Han-qing

    2008-01-01

    In the present study we prepared macroporous polyvinyl alcohol beads. A series of bilirubin adsorbents were generated by immobilization of eight amine agents to the beads as ligands. The adsorption of bilirubin was evaluated by in vitro static and dynamic adsorption tests. The results show that these adsorbents have excellent adsorption efficiency and capacity. Among the eight ligands, trimethylamine (TMA), triethylamine (TEA) and 1,6- hexanediamine(HAD) showed the highest adsorption capacity. The adsorption equilibrium can be achieved in half an hour, and the adsorption percentage of bilirubin was up to 80%. Static electricity and hydrophobic interaction played the main role in bilirubin adsorption, and the adsorption was found to match the monolayer model. The excellent adsorption of these adsorbents indicates their potential in clinical treatment.

  14. Unilobar versus bilobar biliary drainage: effect on quality of life and bilirubin level reduction

    Directory of Open Access Journals (Sweden)

    Shivanand Gamanagatti

    2016-01-01

    Conclusion: Percutaneous biliary drainage provides good palliation of malignant obstructive jaundice. Partial-liver drainage achieved results as good as those after complete liver drainage with significant improvements in QOL and reduction of the bilirubin level.

  15. Neonatal bilirubin management as an implementation example of interdisciplinary continuum of care tools

    OpenAIRE

    Thornton, Sidney N.; Thompson, Bryce S.; Millar, Jean A.; Eggert, Larry D.; Wilcox, Adam B

    2007-01-01

    Management of newborn bilirubin spans the inpatient and outpatient continuum of care. Intermountain Healthcare has developed and implemented a web-based tool for managing bilirubin that follows newborn patients across care settings and providers with a consistent plan of care. The underlying model for the tool is derived from published guidelines. The model divides the time-sensitive data into risk zones and associates each zone with the appropriate order set for follow-up care. The tool inte...

  16. The origins and kinetics of bilirubin in dogs with hepatobiliary and haemolytic diseases.

    Science.gov (United States)

    Rothuizen, J; van den Brom, W E; Fevery, J

    1992-05-01

    In 35 dogs with spontaneous hepatobiliary liver disease the kinetics and the sources of bilirubin were quantified. The disorders were extrahepatic bile duct obstruction (n = 4), fulminant hepatitis (n = 2), (sub)acute hepatitis (n = 5), chronic active hepatitis (CAH) with cirrhosis (n = 6), hepatic lymphosarcoma (n = 5), centrizonal necrosis secondary to haemolytic anaemia (n = 6) and other (n = 2). The plasma disappearance of [3H]bilirubin was analyzed with a two-compartment model in all dogs. The ratio early labeled/late labeled bilirubin was determined by measuring the incorporation of [14C]glycine into erythrocyte haem and faecal stercobilin. By introducing this relation in the model analysis the bilirubin production rates from erythrocyte destruction (PE), ineffective erythropoiesis (PI) and hepatic haemoprotein (PL) could be quantified. Total bilirubin turnover was increased in both primary haemolytic disease and most cases of hepatobiliary disease. Erythrocyte survival was reduced in all cases but one. The bilirubin clearance was impaired to 30-50% of the normal value in most cases of hepatobiliary disease and also in primary haemolysis. In dogs with fulminant hepatitis, and cirrhosis with or without CAH, the clearance rates were reduced to values below 15% of normal. In these dogs both an impaired clearance and an increased production were important determinants of hyperbilirubinaemia. In other cases plasma bilirubin was primarily determined by increased production. These clearances and production rates were similar in haemolysis and in many cases of primary hepatobiliary disease. The hepatic haemoprotein turnover was quite variable in all subgroups, ranging from 1-74% of the total bilirubin turnover.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:1506635

  17. Studies on The Adsorption Capacity for Bilirubin of The Adsorbent Chitosan-β-Cyclodextrin

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The adsorbent crosslinked chitosan-β-cyclodextrin (β-CD) was prepared by the reaction of glutaraldehyde with chitosan and β-cyclodextrin. This type of adsorbent has high adsorption capacity for unconjugated bilirubin. The adsorption capacity was related to the β-CD content of the adsorbent; phosphate buffer concentration; temperature; pH value; ionic strength and the adsorbent beads. The results indicated that the chitosan-β-CD was a good adsorbent for unconjugated bilirubin with high capacity.

  18. "The effect of fluid supplementation on serum bilirubin level during phototerapy in term infants "

    Directory of Open Access Journals (Sweden)

    Torkaman M

    2007-04-01

    Full Text Available Background: Jaundice is a common and benign problem in neonatal period. Several therapeutic procedures for decreasing of serum bilirubin level has been recommended. phototherapy is most common them. Our goal Form this study is the evaluation of serum therapy effects in decreasing of serum bilirubin concentration in icteric infants that are treated with phototherapy. Methods: This is a prospective clinical trial in Najmeih Hospital in 2002. In this study 80 term icteric infants with bilirubin level greater than 17 mg/dl were randomized in two groups, both groups underwent phototherapy and in the case group intravenous fluid supplementation was added. There were no significant differences in the mean gestational age, birth weight, hemoglobin, and also in total serum bilirubin level at admission in the two groups. Results: There were no significant differences in the mean rate of of serum bilirubin level decline during first 24 and 48 hours of hospitalization and also the time of bilirubin decreasing to less than 15 mg/dl and the length of hospitalization in two groups. Conclution: Our study showed intravenous fluid supplementation could be limited to special cases of neonatal icter such as moderate to severe dehydration.

  19. Quantitative assessment of the multiple processes responsible for bilirubin homeostasis in health and disease.

    Science.gov (United States)

    Levitt, David G; Levitt, Michael D

    2014-01-01

    Serum bilirubin measurements are commonly obtained for the evaluation of ill patients and to screen for liver disease in routine physical exams. An enormous research effort has identified the multiple mechanisms involved in the production and metabolism of conjugated (CB) and unconjugated bilirubin (UB). While the qualitative effects of these mechanisms are well understood, their expected quantitative influence on serum bilirubin homeostasis has received less attention. In this review, each of the steps involved in bilirubin production, metabolism, hepatic cell uptake, and excretion is quantitatively examined. We then attempt to predict the expected effect of normal and defective function on serum UB and CB levels in health and disease states including hemolysis, extra- and intrahepatic cholestasis, hepatocellular diseases (eg, cirrhosis, hepatitis), and various congenital defects in bilirubin conjugation and secretion (eg, Gilbert's, Dubin-Johnson, Crigler-Najjar, Rotor syndromes). Novel aspects of this review include: 1) quantitative estimates of the free and total UB and CB in the plasma, hepatocyte, and bile; 2) detailed discussion of the important implications of the recently recognized role of the hepatic OATP transporters in the maintenance of CB homeostasis; 3) discussion of the differences between the standard diazo assay versus chromatographic measurement of CB and UB; 4) pharmacokinetic implications of the extremely high-affinity albumin binding of UB; 5) role of the enterohepatic circulation in physiologic jaundice of newborn and fasting hyperbilirubinemia; and 6) insights concerning the clinical interpretation of bilirubin measurements. PMID:25214800

  20. Predictors of the change in bilirubin levels over twelve weeks of treatment with atazanavir

    LENUS (Irish Health Repository)

    Cotter, Aoife G

    2013-05-16

    AbstractObjectiveTo determine the factors associated with change in bilirubin concentration 12 weeks after the initiation of an atazanavir (ATV)-containing antiretroviral regimen.MethodsWe performed a retrospective case note review of all patients prescribed ATV between January 2004 and October 2007 in a cohort of HIV infected subjects. Data collected included baseline demographics, hepatitis B and C serology, current antiretroviral therapy, baseline and week 12 routine bloods. The primary endpoint was the change in bilirubin concentration at 12 weeks after start of ATV. Multvariable linear regression was performed to assess the relationships between the change in bilirubin and variables of interest. Results: Eighty-three ATV-treated patients were included in the analysis of whom 46 (60.5%) were hepatitis C antibody positive. The median (interquartile range) change in bilirubin by week 12 was 16 (4, 22) umol\\/L; only 1 patient developed grade 4 hyperbilirubinaemia at week 12. After controlling for baseline bilirubin levels, HCV seropositivity and baseline ALP were associated with a smaller change in bilirubin over the 12 weeks with a trend towards lower increases in those receiving tenofovir. Sensitivity analyses reported similar associations with methadone use and injection drug use, when these variables replaced HCV sero-positivity in the model. Conclusion: Patients with hepatitis C co-infection experience smaller changes in bilirubin upon exposure to ATV. Although the underlying mechanism for this association remains unclear, these data support the safe use of this drug in this patient setting. Further research into the clinical predictors of ATV-related hyperbilirubinaemia is warranted.

  1. Serum total bilirubin levels and coronary heart disease--Causal association or epiphenomenon?

    Science.gov (United States)

    Kunutsor, Setor K

    2015-12-01

    Observational epidemiological evidence supports a linear inverse and independent association between serum total bilirubin levels and coronary heart disease (CHD) risk, but whether this association is causal remains to be ascertained. A Mendelian randomization approach was employed to test whether serum total bilirubin is causally linked to CHD. The genetic variant rs6742078--well known to specifically modify levels of serum total bilirubin and accounting for up to 20% of the variance in circulating serum total bilirubin levels--was used as an instrumental variable. In pooled analysis of estimates reported from published genome-wide association studies, every copy of the T allele of rs6742078 was associated with 0.42 standard deviation (SD) higher levels of serum total bilirubin (95% confidence interval, 0.40 to 0.43). Based on combined data from the Coronary Artery Disease Genome wide Replication and Meta-analyses and the Coronary Artery Disease (C4D) Genetics Consortium involving a total of 36,763 CHD cases and 76,997 controls, the odds ratio for CHD per copy of the T allele was 1.01 (95% confidence interval, 0.99 to 1.04). The odds ratio of CHD for a 1 SD genetically elevated serum total bilirubin level was 1.03 (95% confidence interval, 0.98 to 1.09). The current findings casts doubt on a strong causal association of serum total bilirubin levels with CHD. The inverse associations demonstrated in observational studies may be driven by biases such as unmeasured confounding and/or reverse causation. However, further research in large-scale consortia is needed. PMID:26408227

  2. Study on the Property of β -CDEP Supported by Methylated Polystyrene for Inclusion and Adsorption of Bilirubin

    Institute of Scientific and Technical Information of China (English)

    MAO LuYuan; SHEN HanXi; ZHUANG YunFeng; YANG Yong; FAN YunGe

    2001-01-01

    @@ How to utilize functional material to eliminate uncombined bilirubin is a key problem in the research of artificial hepatic supporter [1]. There have been reports on the utilization of cyclodextrin and its polymer as biomedical materials [2,3]. In this paper, it was studied that the property of cyclodextrin polymers (MPS-CDEP) synthesized by us for the inclusion and adsorption of bilirubin. Bilirubin is the degradation product of heme (ferriprotoporohyrin IX), which body contain, and structures of both as follows:

  3. Bilirubin modulated cytokines, growth factors and angiogenesis to improve cutaneous wound healing process in diabetic rats.

    Science.gov (United States)

    Ram, Mahendra; Singh, Vishakha; Kumawat, Sanjay; Kant, Vinay; Tandan, Surendra Kumar; Kumar, Dinesh

    2016-01-01

    Bilirubin has shown cutaneous wound healing potential in some preliminary studies. Here we hypothesize that bilirubin facilitates wound healing in diabetic rats by modulating important healing factors/candidates and antioxidant parameters in a time-dependent manner. Diabetes was induced in male Wistar rats by streptozotocin. In all diabetic rats wounds were created under pentobarbitone anesthesia. All the rats were divided into two groups, of which one (control) was treated with ointment base and other with bilirubin ointment (0.3%). Wound closer measurement and tissue collection were done on days 3, 7, 14 and 19 post-wounding. The relative expressions of hypoxia inducible factor-1 alpha (HIF-1α), vascular endothelial growth factor (VEGF), stromal cell-derived factor-1 alpha (SDF-1α), transforming growth factor- beta1 (TGF-β1()), tumor necrosis factor-α (TNF-α) and interlukin-10 (IL-10) mRNA and proteins and the mRNA of interlukin-1 beta (IL-1β) and matrix metalloprteinase-9 (MMP-9) were determined in the wound tissues. CD-31 staining and collagen content were evaluated by immunohistochemistry and picrosirius red staining, respectively. Histopathological changes were assessed by H&E staining. The per cent wound closer was significantly higher from day 7 onwards in bilirubin-treated rats. HIF-1α, VEGF, SDF-1α, TGF-β1, IL-10 mRNA and protein levels were significantly higher on days 3, 7 and 14 in bilirubin-treated rats. The mRNA expression and protein level of TNF-α and the mRNA of IL-1β and MMP-9 were progressively and markedly reduced in bilirubin-treated rats. The collagen deposition and formation of blood vessels were greater in bilirubin-treated rats. Bilirubin markedly facilitated cutaneous wound healing in diabetic rats by modulating growth factors, cytokines, neovasculogenesis and collagen contents to the wound site. Topical application of bilirubin ointment might be of great use in cutaneous wound healing in diabetic patients. PMID:26679676

  4. Bilirubin modulated cytokines, growth factors and angiogenesis to improve cutaneous wound healing process in diabetic rats.

    Science.gov (United States)

    Ram, Mahendra; Singh, Vishakha; Kumawat, Sanjay; Kant, Vinay; Tandan, Surendra Kumar; Kumar, Dinesh

    2016-01-01

    Bilirubin has shown cutaneous wound healing potential in some preliminary studies. Here we hypothesize that bilirubin facilitates wound healing in diabetic rats by modulating important healing factors/candidates and antioxidant parameters in a time-dependent manner. Diabetes was induced in male Wistar rats by streptozotocin. In all diabetic rats wounds were created under pentobarbitone anesthesia. All the rats were divided into two groups, of which one (control) was treated with ointment base and other with bilirubin ointment (0.3%). Wound closer measurement and tissue collection were done on days 3, 7, 14 and 19 post-wounding. The relative expressions of hypoxia inducible factor-1 alpha (HIF-1α), vascular endothelial growth factor (VEGF), stromal cell-derived factor-1 alpha (SDF-1α), transforming growth factor- beta1 (TGF-β1()), tumor necrosis factor-α (TNF-α) and interlukin-10 (IL-10) mRNA and proteins and the mRNA of interlukin-1 beta (IL-1β) and matrix metalloprteinase-9 (MMP-9) were determined in the wound tissues. CD-31 staining and collagen content were evaluated by immunohistochemistry and picrosirius red staining, respectively. Histopathological changes were assessed by H&E staining. The per cent wound closer was significantly higher from day 7 onwards in bilirubin-treated rats. HIF-1α, VEGF, SDF-1α, TGF-β1, IL-10 mRNA and protein levels were significantly higher on days 3, 7 and 14 in bilirubin-treated rats. The mRNA expression and protein level of TNF-α and the mRNA of IL-1β and MMP-9 were progressively and markedly reduced in bilirubin-treated rats. The collagen deposition and formation of blood vessels were greater in bilirubin-treated rats. Bilirubin markedly facilitated cutaneous wound healing in diabetic rats by modulating growth factors, cytokines, neovasculogenesis and collagen contents to the wound site. Topical application of bilirubin ointment might be of great use in cutaneous wound healing in diabetic patients.

  5. Pro-healing effects of bilirubin in open excision wound model in rats.

    Science.gov (United States)

    Ahanger, Azad A; Leo, Marie D; Gopal, Anu; Kant, Vinay; Tandan, Surendra K; Kumar, Dinesh

    2016-06-01

    Bilirubin, a by-product of heme degradation, has an important role in cellular protection. Therefore, we speculated that bilirubin could be of potential therapeutic value in wound healing. To validate the hypothesis, we used a full-thickness cutaneous wound model in rats. Bilirubin (30 mg/kg) was administered intraperitoneally every day for 9 days. The surface area of the wound was measured on days 0, 2, 4, 7 and 10 after the creation of the wound. The granulation tissue was collected on day 10 post-wounding for analysing various parameters of wound healing. Bilirubin treatment accelerated wound contraction and increased hydroxyproline and glucosamine contents. mRNA expression of pro-inflammatory factors such as intercellular cell adhesion molecule-1 (ICAM-1) and tumour necrosis factor-α (TNF-α) were down-regulated and that of anti-inflammatory cytokine interleukin-10 (IL-10) was up-regulated. The findings suggest that bilirubin could be a new agent for enhancing cutaneous wound healing. PMID:24947136

  6. Potential Cardiovascular Risk Protection of Bilirubin in End-Stage Renal Disease Patients under Hemodialysis

    Directory of Open Access Journals (Sweden)

    Maria do Sameiro-Faria

    2014-01-01

    Full Text Available We evaluated the potential cardiovascular risk protection of bilirubin in hemodialysis (HD patients. An enlarged set of studies were evaluated in 191 HD patients, including hematological study, lipid profile, iron metabolism, nutritional, inflammatory markers, and dialysis adequacy. The TA duplication screening in the UDP-glucuronosyltransferase 1 A1 (UGT1A1 promoter region was also performed. The UGT1A1 genotype frequencies in HD patients were 49.2%, 42.4%, and 8.4% for 6/6, 6/7, and 7/7 genotypes, respectively. Although no difference was found in UGT1A1 genotype distribution between the three tertiles of bilirubin, significant differences were found with increasing bilirubin levels, namely, a decrease in platelet, leukocyte, and lymphocyte counts, transferrin, oxidized low-density lipoprotein (ox-LDL, ox-LDL/low-density lipoprotein cholesterol ratio, apolipoprotein (Apo A, Apo B, and interleukin-6 serum levels and a significant increased concentration of hemoglobin, hematocrit, erythrocyte count, iron, transferrin saturation, Apo A/Apo B ratio, adiponectin, and paraoxonase 1 serum levels. After adjustment for age these results remained significant. Our data suggest that higher bilirubin levels are associated with beneficial effects in HD patients, by improving lipid profile and reducing the inflammatory grade, which might contribute to increase in iron availability. These results suggest a potential cardiovascular risk protection of bilirubin in HD patients.

  7. STUDY TO PREDICT NEWBORN AT RISK OF DEVELOPING NEONATAL HYPERBILIRUBINAEMIA BY MEASURING CORD BLOOD BILIRUBIN

    Directory of Open Access Journals (Sweden)

    Uthaya

    2016-04-01

    Full Text Available BACKGROUND NNH is a common problem in neonates during 1st week of life. Early discharge of healthy-term newborn is a common practice and NNH is a cause for readmission in most babies. Our aim was to predict the risk of NNH using cord bilirubin values. METHODS Around 150 intramurally delivered healthy term neonates were prospectively enrolled. Cord bilirubin and serum bilirubin at or after 72 hours were estimated. RESULTS AND DISCUSSION Using statistical analysis SPSS 19.0.2 program for windows, significant hyperbilirubinaemia was found in 14% of the neonates. Using cord bilirubin >2 mg/dL, significant hyperbilirubinaemia can be predicted with sensitivity of 90.4%, specificity of 75.1%, PPV of 37.2%, NPV of 97.9% and a p value of <0.05. CONCLUSION A high NPV in our study suggests that healthy term babies with cord bilirubin <2 mg/dL can be discharged early with assurance to parents.

  8. Physiological antioxidative network of the bilirubin system in aging and age-related diseases

    Directory of Open Access Journals (Sweden)

    Sung Young eKim

    2012-03-01

    Full Text Available Oxidative stress is detrimental to life processes and is particularly responsible for aging and age-related diseases. Thus, most organisms are well equipped with a spectrum of biological defense mechanisms against oxidative stress. The major efficient antioxidative mechanism is the glutathione system, operating a redox cycling mechanism for glutathione utilization, which consists of glutathione and its peroxidase and reductase. However, this system is mainly effective for hydrophilic oxidants, while lipophilic oxidants require another scavenging system. Since many age-related pathological conditions are related to lipid peroxidation, especially in association with the aging process, the physiological role of the scavenging system for lipophilic oxidants should be considered. In this regard, the biliverdin to bilirubin conversion pathway, via biliverdin reductase, is suggested to be another major protective mechanism that scavenges lipophilic oxidants because of the lipophilic nature of bilirubin. The efficiency of this bilirubin system might be potentiated by operation of the intertwined bicyclic systems of the suggested redox metabolic cycle of biliverdin and bilirubin and the transcriptional control cycle of biliverdin reductase and heme oxygenase-1. In order to combat oxidative stress, both anti-oxidative systems, against hydrophilic and lipophilic oxidants, respectively, are required to work cooperatively. In this regard, the roles of the bilirubin system in aging and age-related diseases are reassessed in this review, and their interacting networks are evaluated.

  9. Comparison of transcutaneous and total serum bilirubin measurement in Turkish newborns.

    Science.gov (United States)

    Şimşek, Fatih Mehmet; Narter, Fatma; Ergüven, Müferet

    2014-01-01

    Severe neonatal hyperbilirubinemia can be prevented by screening for neonatal jaundice. Transcutaneous bilirubin (TcB) measurement is a noninvasive method for screening neonates. The aim of this study was to examine the correlation between TcB measurement (using the JM-103 bilirubinometer) and total serum bilirubin (TSB) measurement. To our knowledge, this is the first study evaluating the usefulness of the JM-103 bilirubinometer in Turkish neonates. Two hundred and fifty healthy infants in our well-baby nurseries and follow-up clinic with a gestational age of ≥36 weeks who were ≤15 days old were enrolled in this study. TcB measurements were taken usinng the JM-103; almost simultaneously, TSB was checked using a spectrophotometric method. The mean±SD TSB level was 11.2±4.6 mg/dl (range, 0.9-27.0 mg/dl); 17.2% of cases had TSB>15 mg/dl. There was good correlation between transcutaneous bilirubin and total serum bilirubin measurements (Pearson's correlation coefficient 0.87 for TcB from the forehead, 0.88 for TcB from the sternum; pjaundiced infants that require a serum bilirubin check and may reduce the need for TSB measurements. PMID:26388591

  10. Quantitative assessment of the multiple processes responsible for bilirubin homeostasis in health and disease

    Directory of Open Access Journals (Sweden)

    Levitt DG

    2014-09-01

    Full Text Available David G Levitt,1 Michael D Levitt2 1Department of Integrative Biology and Physiology, University of Minnesota, Minneapolis, MN, USA; 2Research Service, Veterans Affairs Medical Center, Minneapolis, MN, USAAbstract: Serum bilirubin measurements are commonly obtained for the evaluation of ill patients and to screen for liver disease in routine physical exams. An enormous research effort has identified the multiple mechanisms involved in the production and metabolism of conjugated (CB and unconjugated bilirubin (UB. While the qualitative effects of these mechanisms are well understood, their expected quantitative influence on serum bilirubin homeostasis has received less attention. In this review, each of the steps involved in bilirubin production, metabolism, hepatic cell uptake, and excretion is quantitatively examined. We then attempt to predict the expected effect of normal and defective function on serum UB and CB levels in health and disease states including hemolysis, extra- and intrahepatic cholestasis, hepatocellular diseases (eg, cirrhosis, hepatitis, and various congenital defects in bilirubin conjugation and secretion (eg, Gilbert's, Dubin–Johnson, Crigler–Najjar, Rotor syndromes. Novel aspects of this review include: 1 quantitative estimates of the free and total UB and CB in the plasma, hepatocyte, and bile; 2 detailed discussion of the important implications of the recently recognized role of the hepatic OATP transporters in the maintenance of CB homeostasis; 3 discussion of the differences between the standard diazo assay versus chromatographic measurement of CB and UB; 4 pharmacokinetic implications of the extremely high-affinity albumin binding of UB; 5 role of the enterohepatic circulation in physiologic jaundice of newborn and fasting hyperbilirubinemia; and 6 insights concerning the clinical interpretation of bilirubin measurements.Keywords: liver, conjugation, diazo, albumin, Rotor

  11. Transport and metabolism at blood-brain interfaces and in neural cells: relevance to bilirubin-induced encephalopathy

    Directory of Open Access Journals (Sweden)

    Silvia eGazzin

    2012-05-01

    Full Text Available Bilirubin, the end-product of heme catabolism, circulates in non pathological plasma mostly as a protein-bound species. When bilirubin concentration builds up, the free fraction of the molecule increases. Unbound bilirubin then diffuses across blood-brain interfaces into the brain, where it accumulates and exerts neurotoxic effects. In this classical view of bilirubin neurotoxicity, blood-brain interfaces act merely as structural barriers impeding the penetration of the pigment-bound carrier protein, and neural cells are considered as passive targets of its toxicity. Yet, the role of blood-brain interfaces in the occurrence of bilirubin encephalopathy appears more complex than being simple barriers to the diffusion of bilirubin, and neural cells such as astrocytes and neurons can play an active role in controlling the balance between the neuroprotective and neurotoxic effects of bilirubin. This article reviews the emerging in vivo and in vitro data showing that transport and metabolic detoxification mechanisms at the blood-brain and blood-CSF barriers may modulate bilirubin flux across both cellular interfaces, and that these protective functions can be affected in chronic hyperbilirubinemia. Then the in vivo and in vitro arguments in favor of the physiological antioxidant function of intracerebral bilirubin are presented, as well as with the potential role of transporters such as ABCC-1 and metabolizing enzymes such as cytochromes P-450 in setting the cerebral cell- and structure-specific toxicity of bilirubin following hyperbilirubinemia. The relevance of these data to the pathophysiology of bilirubin-induced neurological diseases is discussed.

  12. A Hypothesis for Using Pathway Genetic Load Analysis for Understanding Complex Outcomes in Bilirubin Encephalopathy.

    Science.gov (United States)

    Riordan, Sean M; Bittel, Douglas C; Le Pichon, Jean-Baptiste; Gazzin, Silvia; Tiribelli, Claudio; Watchko, Jon F; Wennberg, Richard P; Shapiro, Steven M

    2016-01-01

    Genetic-based susceptibility to bilirubin neurotoxicity and chronic bilirubin encephalopathy (kernicterus) is still poorly understood. Neonatal jaundice affects 60-80% of newborns, and considerable effort goes into preventing this relatively benign condition from escalating into the development of kernicterus making the incidence of this potentially devastating condition very rare in more developed countries. The current understanding of the genetic background of kernicterus is largely comprised of mutations related to alterations of bilirubin production, elimination, or both. Less is known about mutations that may predispose or protect against CNS bilirubin neurotoxicity. The lack of a monogenetic source for this risk of bilirubin neurotoxicity suggests that disease progression is dependent upon an overall decrease in the functionality of one or more essential genetically controlled metabolic pathways. In other words, a "load" is placed on key pathways in the form of multiple genetic variants that combine to create a vulnerable phenotype. The idea of epistatic interactions creating a pathway genetic load (PGL) that affects the response to a specific insult has been previously reported as a PGL score. We hypothesize that the PGL score can be used to investigate whether increased susceptibility to bilirubin-induced CNS damage in neonates is due to a mutational load being placed on key genetic pathways important to the central nervous system's response to bilirubin neurotoxicity. We propose a modification of the PGL score method that replaces the use of a canonical pathway with custom gene lists organized into three tiers with descending levels of evidence combined with the utilization of single nucleotide polymorphism (SNP) causality prediction methods. The PGL score has the potential to explain the genetic background of complex bilirubin induced neurological disorders (BIND) such as kernicterus and could be the key to understanding ranges of outcome severity in

  13. Association between bilirubin and risk of Non-Alcoholic Fatty Liver Disease based on a prospective cohort study.

    Science.gov (United States)

    Tian, Jianbo; Zhong, Rong; Liu, Cheng; Tang, Yuhan; Gong, Jing; Chang, Jiang; Lou, Jiao; Ke, Juntao; Li, Jiaoyuan; Zhang, Yi; Yang, Yang; Zhu, Ying; Gong, Yajie; Xu, Yanyan; Liu, Peiyi; Yu, Xiao; Xiao, Lin; Du, Min; Yang, Ling; Yuan, Jing; Wang, Youjie; Chen, Weihong; Wei, Sheng; Liang, Yuan; Zhang, Xiaomin; He, Meian; Wu, Tangchun; Yao, Ping; Miao, Xiaoping

    2016-01-01

    The study aimed to assess the association between total, direct, and indirect bilirubin and nonalcoholic fatty live disease (NAFLD) risk given its high prevalence and serious clinical prognosis. Among 27,009 subjects who participated in a healthy screening program from the Dongfeng-Tongji cohort study in 2008, 8189 eligible subjects (aged 35-86 years; males, 43.95%) were ultimately enrolled. The incidence rates of NAFLD in 2013 were compared with respect to baseline bilirubin levels among subjects free of NAFLD, and the effect sizes were estimated by logistic regression analysis. During 5 years follow-up, we observed 1956 cases of newly developed NAFLD with the overall incidence of 23.88%. Direct bilirubin was presented to inversely associate with NAFLD risk. Compared with quartile 1 of direct bilirubin, the multivariable-adjusted ORs (95% CIs) for NAFLD of quartile 2 to 4 were 1.104 (0.867-1.187), 0.843 (0.719-0.989), and 0.768 (0.652-0.905), respectively, P for trend 0.002). Similarly, inverse effects of direct bilirubin on NAFLD incidence were also observed when stratified by sex and BMI. However, no significant associations were found between total, and indirect bilirubin and NAFLD risk. Direct bilirubin reduced NAFLD risk independent of possible confounders among middle-aged and elderly Chinese population, probably based on the endogenous antioxidation of bilirubin. PMID:27484402

  14. Association between bilirubin and risk of Non-Alcoholic Fatty Liver Disease based on a prospective cohort study

    Science.gov (United States)

    Tian, Jianbo; Zhong, Rong; Liu, Cheng; Tang, Yuhan; Gong, Jing; Chang, Jiang; Lou, Jiao; Ke, Juntao; Li, Jiaoyuan; Zhang, Yi; Yang, Yang; Zhu, Ying; Gong, Yajie; Xu, Yanyan; Liu, Peiyi; Yu, Xiao; Xiao, Lin; Du, Min; Yang, Ling; Yuan, Jing; Wang, Youjie; Chen, Weihong; Wei, Sheng; Liang, Yuan; Zhang, Xiaomin; He, Meian; Wu, Tangchun; Yao, Ping; Miao, Xiaoping

    2016-01-01

    The study aimed to assess the association between total, direct, and indirect bilirubin and nonalcoholic fatty live disease (NAFLD) risk given its high prevalence and serious clinical prognosis. Among 27,009 subjects who participated in a healthy screening program from the Dongfeng-Tongji cohort study in 2008, 8189 eligible subjects (aged 35–86 years; males, 43.95%) were ultimately enrolled. The incidence rates of NAFLD in 2013 were compared with respect to baseline bilirubin levels among subjects free of NAFLD, and the effect sizes were estimated by logistic regression analysis. During 5 years follow-up, we observed 1956 cases of newly developed NAFLD with the overall incidence of 23.88%. Direct bilirubin was presented to inversely associate with NAFLD risk. Compared with quartile 1 of direct bilirubin, the multivariable-adjusted ORs (95% CIs) for NAFLD of quartile 2 to 4 were 1.104 (0.867–1.187), 0.843 (0.719–0.989), and 0.768 (0.652–0.905), respectively, P for trend 0.002). Similarly, inverse effects of direct bilirubin on NAFLD incidence were also observed when stratified by sex and BMI. However, no significant associations were found between total, and indirect bilirubin and NAFLD risk. Direct bilirubin reduced NAFLD risk independent of possible confounders among middle-aged and elderly Chinese population, probably based on the endogenous antioxidation of bilirubin. PMID:27484402

  15. Combined effects of smoking and bilirubin levels on the risk of lung cancer in Korea: the severance cohort study.

    Directory of Open Access Journals (Sweden)

    Jung-Eun Lim

    Full Text Available BACKGROUND: Smoking is a major risk factor for lung cancer. Bilirubin, an antioxidant, is inversely associated with the risk of diseases related to oxidative stress. This study was conducted to determine the influence of smoking and bilirubin levels on the risk of lung cancer in the Severance cohort study. METHODS: This study included 68,676 Korean who received a health examination at Severance Health Promotion Center from 1994 to 2004. Serum bilirubin measurements within normal range were divided into tertiles whereas smoking states were divided as never-smokers, former smokers and current smokers. A diagnosis of lung cancer was coded as occurring based on the report from the National Cancer Registry. Hazard ratios (HRs and 95% confidence intervals (95% CIs were calculated using Cox proportional hazards model. RESULTS: At the end of the study period, 240 patients (men: 181, women: 59 developed lung cancer. Compared to those with bilirubin levels ≥ 1.0 mg/dL, HRs (95% CI for lung cancer were 2.8 (1.8-4.2 for subjects having bilirubin levels from 0.2 to 0.7 mg/dL in men. When we stratified our analysis by smoking status, bilirubin consistently showed a protective effect on the risk of lung cancer on both never- and current smokers. Current smokers having bilirubin levels from 0.2 to 0.7 mg/dL had a risk of lung cancer by 6.0-fold higher than never-smokers with bilirubin levels ≥ 1.0 mg/dL in men. CONCLUSION: In this large prospective study, higher baseline bilirubin level in the normal range was associated with low risk of lung cancer. Smoking and low bilirubin levels were cumulatively associated with a higher risk of lung cancer.

  16. Profile of Minocycline Neuroprotection in Bilirubin-Induced Auditory System Dysfunction

    OpenAIRE

    Rice, Ann C.; Chiou, Victoria; Zuckoff, Sarah B; Shapiro, Steven M

    2010-01-01

    Excessive hyperbilirubinemia in human neonates can cause permanent dysfunction of the auditory system, as assessed with brainstem auditory evoked potentials (BAEPs). Jaundiced Gunn rat pups (jjs) exhibit similar BAEP abnormalities as hyperbilirubinemic neonates. Sulfadimethoxine (sulfa) administration to jjs, which displaces bilirubin from serum albumin into tissues including brain, exacerbates acute toxicity. Minocycline administered prior to sulfa in jjs protects against BAEP abnormalities....

  17. 21 CFR 862.1110 - Bilirubin (total or direct) test system.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Bilirubin (total or direct) test system. 862.1110 Section 862.1110 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES CLINICAL CHEMISTRY AND CLINICAL TOXICOLOGY DEVICES Clinical Chemistry...

  18. Prognostic value of serum total bilirubin in patients with acute coronary syndrome after percutaneous coronary intervention

    Institute of Scientific and Technical Information of China (English)

    孙同文

    2013-01-01

    Objective To investigate the predictive value of serum total bilirubin (STB) level in patients with acute coronary syndrome (ACS) after percutaneous coronary intervention (PCI) .Methods A total of 1273 consecutive patients treated with PCI in cardiology department,First Affiliated Hospital of Zhengzhou University from June

  19. Preparation and adsorption property of aminated cross linking microbeads of GMA/EGDMA for bilirubin

    Indian Academy of Sciences (India)

    Zhiping Chen; Baojiao Gao; Xiaofeng Yang

    2009-11-01

    Cross linking microbeads with a controllable diameter were synthesized by suspension copolymerization of the monomer glycidyl methacrylate (GMA) and the cross linking agent ethylene glycol dimethylacrylate (EGDMA). By the ring-opening reaction of the epoxy groups, the microbeads GMA/EGDMA were modified with different aminating agents and resulting in the aminated microbeads. The morphology of the microbeads was characterized by SEM. The adsorption property of aminated microbeads for bilirubin was investigated, and the effects of various factors, such as the chemical structures of the aminating agents, pH values of the medium and the presence of bovine serum albumin in the adsorption medium, on the adsorption property were examined. The experimental results show that the aminated microbeads have strong adsorption ability for bilirubin, and the isotherm adsorption behaviour is fitted to Freundlich equation satisfactorily. The adsorption ability of the aminated microbeads modified with hexanediamine is stronger than that of others, and the longer the molecule of multi-ethylene multiamine, the weaker the adsorption ability for bilirubin. The pH value of the medium affects the adsorption ability greatly, as pH = 6, the adsorption ability is strongest. In the presence of BSA, the microbeads still have a higher adsorption capacity towards bilirubin.

  20. Bilirubin as a potential causal factor in type 2 diabetes risk : a Mendelian randomization study

    NARCIS (Netherlands)

    Abbasi, Ali; Deetman, Petronella E.; Corpeleijn, Eva; Gansevoort, Ron T.; Gans, Rijk O. B.; Hillege, Hans L.; van der Harst, Pim; Stolk, Ronald P.; Navis, Gerjan; Alizadeh, Behrooz Z.; Bakker, Stephan J. L.

    2015-01-01

    Circulating bilirubin, a natural antioxidant, is associated with decreased risk of type 2 diabetes (T2D), but the nature of the relationship remains unknown. We performed Mendelian randomization in a prospective cohort of 3,381 participants free of diabetes at baseline (aged 28-75 years; women, 52.6

  1. A novel predictor of infarct-related artery patency before percutaneous intervention and in-hospital outcomes for ST-segment elevation myocardial infarction patients: serum bilirubin level

    OpenAIRE

    Acet, Halit; Ertş, Faruk; Akıl, Mehmet Ata; Polat, Nihat; Aydın, Mesut; Akyüz, Abdurrahman; Ayçiçek, Hilal; Alan, Sait

    2014-01-01

    Introduction Previous studies have reported a relationship between serum bilirubin levels and coronary artery disease (CAD). However, data are rare up to now regarding the relation of bilirubin levels with infarct-related artery (IRA) patency in the setting of ST-segment elevation myocardial infarction (STEMI). Moreover, previous studies reported that increased bilirubin was related to impaired post-intervention coronary flow. To our knowledge, the association between serum total bilirubin (T...

  2. [Quantifying intestino-esophageal reflux with a fiberoptic bilirubin detection probe].

    Science.gov (United States)

    Stein, H J; Kraemer, S J; Feussner, H; Siewert, J R

    1994-05-01

    Currently available methods to assess reflux of duodenal contents into the esophagus are cumbersome, unphysiologic, and inaccurate. The role of intestino-esophageal reflux has therefore been controversial. We assessed intestino-esophageal reflux using a new system which allows prolonged intraesophageal measurement of bilirubin, the major pigment of bile. Measurements were made with a newly developed fiber-optic sensor electrode connected to a portable data processing unit (BILITEC 2000, Synectics Medical Inc., Sweden). Light absorption was measured at the absorption peak of bilirubin and a reference point. Studies were performed in 9 subjects without esophagitis, 9 subjects with esophagitis and primary reflux disease and 7 subjects with erosive esophagitis after a total or subtotal gastrectomy. The fiberoptic electrode was placed 5 cm above the lower esophageal sphincter. In vitro studies showed linear correlations between absorbance measurements obtained with the BILITEC-unit and known bilirubin and bile acid concentrations, respectively (p < 0.01). Compared to both other groups, light absorption was markedly increased in the subjects who had esophagitis after a total or subtotal gastrectomy (p < 0.05) indicating severe biliary reflux. An increase in bilirubin absorption occurred particularly during the post-prandial and supine periodes (p < 0.01). A Roux-en-Y biliary diversion procedure completely abolished bile reflux in 2 of these patients. These data indicate that ambulatory 24-hour fiberoptic measurement of bilirubin in the esophagus is feasible and allows quantitation of intestino-esophageal reflux. Intestino-esophageal reflux occurs particularly during the postprandial period and the early morning hours in patients who had a previous subtotal or total gastrectomy. PMID:8073796

  3. Assessment of duodenogastric reflux by combined continuous intragastric pH and bilirubin monitoring

    Institute of Scientific and Technical Information of China (English)

    Fei Dai; Jun Gong; Ru Zhang; Jin-Yan Luo; You-Ling Zhu; Xue-Qin Wang

    2002-01-01

    AIM: To assess the diagnostic value of a combination of continuous intragastric pH and bilirubin monitoring in the detection of duodenogastric reflux (DGR), and the effects of diet on the bilirubin absorbance.METHODS: 30 healthy volunteers were divided into twogroups: standard diet group (Group 1) 18 cases, free diet group (Group 2) 12 cases. Each subjects were subjected to simultaneous 24 hour intragastric pH and spectrophotometric bilirubin concentration monitoring (Bilitec 2000).RESULTS: There was no difference of preprandial phasebilirubin absorbance between two groups. The absorbanceof postprandial phase was significantly increased in group 2than group 1. There was no difference between preprandialphase and postprandial phase absorbance in group 1.Postprandial phase absorbance was significantly higher ingroup 2. In a comparison of bile reflux with intragastric pHduring night time, there were 4 types of reflux:Simultaneous increase in absorbance and pH in only 19.6%, increase in bilirubin with unchanged pH 33. 3 %, pHincrease with unchanged absorbance 36. 3 %, and bothunchanged in 10. 8 %. Linear regression analysis showed nocorrelation between percertage total time of pH < 4 aridpercentage total time of absortance > 0. 14, r=0.068, P<0.05.CONCLUSION: Because of the dietary effect, highabsorbance fluids or foods should be avoided in detection.Intrsgastric pH and bilirubin monitoring separately predictthe presence of duodenal (and/or pancreatic) reflux and bilereflux. They can not substitute for each other. The detectionof DGR is improved if the two parameters are combinedsimultanoously.

  4. Lower Serum Bilirubin and Uric Acid Concentrations in Patients with Parkinson's Disease in China.

    Science.gov (United States)

    Qin, Xiao-Ling; Zhang, Qing-Shan; Sun, Li; Hao, Meng-Wei; Hu, Zhao-Ting

    2015-05-01

    The objective of the study is to investigate the correlation between bilirubin and uric acid (UA) concentrations and symptoms of Parkinson's disease (PD) in Chinese population. A total of 425 PD patients and 460 controls were included in the current study. Patients were diagnosed by a neurologist and assessed using the Hoehn & Yahr (H&Y) scale. Venous blood samples were collected, and bilirubin and UA concentrations were analyzed. Compared to controls, indirect bilirubin (IBIL) and UA concentrations were lower in PD patients (P IBIL = 0.015, P UA = 0.000). Serum IBIL in different age subgroups and H&Y stage subgroups were also lower compared to the control group (P IBIL = 0.000, P UA = 0.000) but were not significantly different among these subgroups. Females in the control group had significantly lower serum IBIL and UA concentrations than males (P IBIL = 0.000, P UA = 0.000) and the PD group (P IBIL = 0.027, P UA = 0.000). In early PD (patients with UA concentrations were also lower than the controls (P IBIL = 0.013, P UA = 0.000). Although IBIL concentration was positively correlated with UA concentration in controls (R IBIL = 0.229, P IBIL = 0.004), this positive association was not observed in the PD group (R IBIL = -0.032, P IBIL = 0.724). Decreased levels of serum IBIL and UA were observed in PD patients. It is possible that individuals with decreased serum bilirubin and UA concentrations lack the endogenous defense system to prevent peroxynitrite and other free radicals from damaging and destroying dopaminergic cells in the substantia nigra. Our results provide a basis for further investigation into the role of bilirubin in PD.

  5. The effect of bilirubin on the excitability of mitral cells in the olfactory bulb of the rat.

    Science.gov (United States)

    Chen, Xiao-Juan; Zhou, Hui-Qun; Ye, Hai-Bo; Li, Chun-Yan; Zhang, Wei-Tian

    2016-01-01

    Olfactory dysfunction is a common clinical phenomenon observed in various liver diseases. Previous studies have shown a correlation between smell disorders and bilirubin levels in patients with hepatic diseases. Bilirubin is a well-known neurotoxin; however, its effect on neurons in the main olfactory bulb (MOB), the first relay in the olfactory system, has not been examined. We investigated the effect of bilirubin (>3 μM) on mitral cells (MCs), the principal output neurons of the MOB. Bilirubin increased the frequency of spontaneous firing and the frequency but not the amplitude of spontaneous excitatory postsynaptic currents (sEPSCs). TTX completely blocked sEPSCs in almost all of the cells tested. Bilirubin activity was partially blocked by N-methyl-D-aspartate (NMDA) and α-amino-3-hydroxy-5-methyl-4-isoxazolepro pionic acid (AMPA) receptor antagonists. Furthermore, we found that bilirubin increased the frequency of intrinsic firing independent of synaptic transmission in MCs. Our findings suggest that bilirubin enhances glutamatergic transmission and strengthens intrinsic firing independent of synaptic transmission, all of which cause hyperexcitability in MCs. Our findings provide the basis for further investigation into the mechanisms underlying olfactory dysfunction that are often observed in patients with severe liver disease. PMID:27611599

  6. Bilirubin prevents acute DSS-induced colitis by inhibiting leukocyte infiltration and suppressing upregulation of inducible nitric oxide synthase.

    Science.gov (United States)

    Zucker, Stephen D; Vogel, Megan E; Kindel, Tammy L; Smith, Darcey L H; Idelman, Gila; Avissar, Uri; Kakarlapudi, Ganesh; Masnovi, Michelle E

    2015-11-15

    Bilirubin is thought to exert anti-inflammatory effects by inhibiting vascular cell adhesion molecule-1 (VCAM-1)-dependent leukocyte migration and by suppressing the expression of inducible nitric oxide synthase (iNOS). As VCAM-1 and iNOS are important mediators of tissue injury in the dextran sodium sulfate (DSS) murine model of inflammatory colitis, we examined whether bilirubin prevents colonic injury in DSS-treated mice. Male C57BL/6 mice were administered 2.5% DSS in the drinking water for 7 days, while simultaneously receiving intraperitoneal injections of bilirubin (30 mg/kg) or potassium phosphate vehicle. Disease activity was monitored, peripheral blood counts and serum nitrate levels were determined, and intestinal specimens were analyzed for histological injury, leukocyte infiltration, and iNOS expression. The effect of bilirubin on IL-5 production by HSB-2 cells and on Jurkat cell transendothelial migration also was determined. DSS-treated mice that simultaneously received bilirubin lost less body weight, had lower serum nitrate levels, and exhibited reduced disease severity than vehicle-treated animals. Concordantly, histopathological analyses revealed that bilirubin-treated mice manifested significantly less colonic injury, including reduced infiltration of eosinophils, lymphocytes, and monocytes, and diminished iNOS expression. Bilirubin administration also was associated with decreased eosinophil and monocyte infiltration into the small intestine, with a corresponding increase in peripheral blood eosinophilia. Bilirubin prevented Jurkat migration but did not alter IL-5 production. In conclusion, bilirubin prevents DSS-induced colitis by inhibiting the migration of leukocytes across the vascular endothelium and by suppressing iNOS expression.

  7. Mildly elevated serum bilirubin levels are negatively associated with carotid atherosclerosis among elderly persons.

    Directory of Open Access Journals (Sweden)

    Ryuichi Kawamoto

    Full Text Available Serum bilirubin may have a beneficial role in preventing oxidative changes in atherosclerosis. Limited information is available on whether serum total bilirubin is an independent confounding factor for carotid atherosclerosis {for example, intima-media thickness (IMT, plaque} measured noninvasively by B-mode ultrasonography only among elderly persons. The study subjects were 325 men aged 79 ± 8 (mean ± standard deviation years and 509 women aged 81 ± 8 years that were enrolled consecutively from patients aged ≥ 60 years in the medical department. Carotid IMT and plaque were derived via B-mode ultrasonography. Multiple linear regression analysis showed that in men age (β = 0.199, p = 0.002, smoking status (β = 0.154, p = 0.006, GGT (β = -0.139, p = 0.039, and GGT (β = -0.133, p = 0.022 were significantly and independently associated with carotid IMT, and in women age (β = 0.186, p < 0.001, systolic blood pressure (β = 0.104, p = 0.046, diastolic blood pressure (β = -0.148, p = 0.004, prevalence of antihypertensive medication (β = 0.126, p = 0.004, fasting plasma glucose (β = 0.135, p = 0.003, GGT (β = -0.104, p = 0.032, estimated glomerular filtration rate, serum bilirubin (β = -0.119, p = 0.006, and prevalence of cardiovascular disease (CVD (β = 0.103, p = 0.017 were also independently associated with carotid IMT. The odds ratios (ORs {95% confidence interval (CI} of increasing serum bilirubin category were negatively associated with carotid IMT ≥ 1.0 mm and plaque in both genders. Compared to subjects with a serum bilirubin of Quartile-1, the multivariate-OR (95% CI of carotid plaque was 0.25 (0.11-0.57 in the Quartile-4 male group, and 0.41 (0.21-0.78 in the Quartile-2 female group, 0.51 (0.26-0.98 in the Quartile-3 female group, and 0.46 (0.24-0.89 in the Quartile-4 female group. Our data demonstrated an independently negative association between serum bilirubin and carotid atherosclerosis in both genders.

  8. Fully Oriented Bilirubin Oxidase on Porphyrin-Functionalized Carbon Nanotube Electrodes for Electrocatalytic Oxygen Reduction.

    Science.gov (United States)

    Lalaoui, Noémie; Le Goff, Alan; Holzinger, Michael; Cosnier, Serge

    2015-11-16

    The efficient immobilization and orientation of bilirubin oxidase from Myrothecium verrucaria on multi-walled carbon nanotube electrodes by using π-stacked porphyrins as a direct electron-transfer promoter is reported. By comparing the use of different types of porphyrin, the rational effect of the porphyrin structure on both the immobilization and orientation of the enzyme is demonstrated. The best performances were obtained for protoporphyrin IX, which is the natural precursor of bilirubin. These electrodes exhibit full orientation of the enzyme, as confirmed by the observable non-catalytic redox system corresponding to the T1 copper center associated with pure Nernstian electrocatalytic behavior with high catalytic currents of almost 5 mA cm(-2) at neutral pH. PMID:26449635

  9. Ionization of tyrosine residues in human serum albumin and in its complexes with bilirubin and laurate

    DEFF Research Database (Denmark)

    Honoré, B; Brodersen, R

    1992-01-01

    .7, and in the bilirubin-albumin complex between pH 11.2 and 11.7 with a Hill coefficient 1.6. With a stopped-flow technique it is shown that about seven of the tyrosines ionize fast, with rate constants well above 10(2) s-1, when pH is suddenly changed from near neutral to pH 11.76. Further residues ionize slowly......, with rate constants around 10(2) s-1 or less. The N-form of albumin (pH 6) contains one more fast ionizing tyrosine than the B-form of albumin (pH 10). Binding of bilirubin or laurate to the albumin molecule (molar ratio 1:1) transforms one to three of the fast ionizing tyrosines to slowly ionizing...

  10. Effects of OATP -C gene polymorphisms and low-dose rifampicin on serum bilirubin level

    Institute of Scientific and Technical Information of China (English)

    WeiZHANG; Yi-jingHE; QingLI; Hong-haoZHOU

    2005-01-01

    AIM OATP-C is a liver-specific organic anion uptake transporter and shows high affinity for bilirubin uptaking. Rifampicin has been identified as a potent inhibitor of OATP-C both in vitro and in vivo. This study was set to determine the allele frequencies of OATP-C*1a', OATP-C*1b, and OATP-C* 15 in Chinese population, and secondly, to quantitate the contribution of the OATP-C gene polymorphisms and low-dose rifampicin adminstration to the serum bilirubin level in vivo. METHODS Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) and a novel tetreprimers method were used to identify OATP-C*1a, OATP-C*1b, and OATP-C*15 genotypes.

  11. THE ROLE OF DIETARY PROPOLIS ON ALBUMINS AND BILIRUBIN CONTENT IN CHICKENS

    Directory of Open Access Journals (Sweden)

    Marcela Capcarová

    2013-12-01

    Full Text Available The present study was designed to determinate the effect of propolis as a feed additive on the serum bilirubin and albumin content of female and male chickens. Broiler chickens hybrid Hubbard JV (n=500 were divided into five groups in each gender (control – C and four experimental groups E1 – E4. Experimental chickens received a propolis extract in feed mixture in various doses (E1 – 150 mg/kg; E2 – 450 mg/kg; E3 – 600 mg/kg; E4 – 800 mg/kg. The group that received feed without propolis addition served as the control. Contents of albumin and bilirubin were determined with spectrophotometer. Supplementation of the diet with propolis in the dose of 600 mg/kg significantly (P<0.05 increased albumin content in male chickens. Propolis addition to diets may be a source for antioxidant capacity in human and animals.

  12. Effect of Intravenous Fluid Supplementation on Serum Bilirubin Level in Jaundiced Healthy Neonates during Conventional Phototherapy

    OpenAIRE

    R.Iranpour; R Nohekhan; I Haghshenas

    2004-01-01

    Background: Adequate hydration and good urine output improve the efficacy of phototherapy. The aim of this study was to evaluate the effect of intravenous fluid supplementation on decrease of serum bilirubin levels in jaundiced healthy term infants during conventional phototherapy. Methods: Sixty healthy breast-fed neonates with non-hemolytic hyperbilirubinemia were assigned randomly to receive either breast milk exclusively (non-supplemented group; n=30) or intravenous fluid in addition to b...

  13. The Effect of Clofibrate on Decreasing Serum Bilirubin in Healthy Term Neonates under Home Phototherapy

    OpenAIRE

    Simin Sharafi; Zhaleh Mortazavi; Reza Sharafi; Reza Moradi Parashkouh

    2010-01-01

    Objective: this study was designed to determine the effect of clofibrate on neonatal uncomplicated jaundice treated with home phototherapy. Methods:This clinical trial study was performed on 60 newborns with jaundice that received home phototherapy. Inclusion criteria were body weight between 2500 to 4000 gr, breastfed, total serum bilirubin (TSB) between 14 to 20 mg/dl, aged over 72 hours. The neonates were randomly divided into two groups. All received home phototherapy. Group i received a ...

  14. The role of bilirubin in diabetes, metabolic syndrome, and cardiovascular diseases

    Directory of Open Access Journals (Sweden)

    Libor eVitek

    2012-04-01

    Full Text Available Bilirubin belongs to a phylogenetically old superfamily of tetrapyrrolic compounds, which have multiple biological functions. Although for decades they were believed to be only a waste product of the heme catabolic pathway at best, and a potentially toxic compound at worst; recent data has convincingly demonstrated that mildly elevated serum bilirubin levels are strongly associated with a lower prevalence of oxidative stress-mediated diseases. Indeed, serum bilirubin has been consistently shown to be negatively correlated to cardiovascular diseases (CVD, as well as to CVD-related diseases and risk factors such as arterial hypertension, diabetes mellitus, metabolic syndrome, and obesity. In addition, the clinical data are strongly supported by evidence arising from both in vitro and in vivo experimental studies. This data not only shows the protective effects of bilirubin per se; but addionally, of other products of the heme catabolic pathway such as biliverdin and carbon monoxide, as well as its key enzymes (heme oxygenase and biliverdin reductase; thus, further underlining the biological impacts of this pathway. In this review, detailed information on the experimental and clinical evidence between the heme catabolic pathway and CVD, and those related diseases such as diabetes, metabolic syndrome, and obesity is provided. All of these pathological conditions represent an important threat to human civilization, being the major killers in developed countries, with a steadily increasing prevalence. Thus, it is extremely important to search for novel markers of these diseases, as well as for novel therapeutic modalities to reverse this unfavorable situation. The heme catabolic pathway seems to fulfill the criteria for both diagnostic purposes as well as for potential therapeutical interventions.

  15. Direct antioxidant properties of bilirubin andbiliverdin. Is there a role for biliverdin reductase?

    Directory of Open Access Journals (Sweden)

    Thomas eJansen

    2012-03-01

    Full Text Available Reactive oxygen species (ROS and signaling events are involved in the pathogenesis of endothelial dysfunction and represent a major contribution to vascular regulation. Molecular signaling is highly dependent on reactive oxygen species. But depending on the amount of ROS production it might have toxic or protective effects. Despite a large number of negative outcomes in large clinical trials (e.g. HOPE, HOPE-TOO, antioxidant molecules and agents are important players to influence the critical balance between production and elimination of RONS. However, chronic systemic antioxidant therapy lacks clinical efficacy, probably by interfering with important physiological redox signaling pathways. Therefore, it may be a much more promising attempt to induce intrinsic antioxidant pathways in order to increase the antioxidants not systemically but at the place of oxidative stress and complications. Among others, heme oxygenase (HO has been shown to be important for attenuating the overall production of ROS in a broad range of disease states through its ability to degrade heme and to produce carbon monoxide (CO, biliverdin/bilirubin, and the release of free iron with subsequent ferritin induction. With the present review we would like to highlight the important antioxidant role of the heme oxygenase system and especially discuss the contribution of the biliverdin, bilirubin and biliverdin reductase to these beneficial effects. The bilierdin reductase was reported to confer an antioxidant redox amplification cycle by which low, physiological bilirubin concentrations confer potent antioxidant protection via recycling of biliverdin from oxidized bilirubin by the biliverdin reductase, linking this sink for oxidants to the NADPH pool. To date the existence and role of this antioxidant redox cycle is still under debate and we present and discuss the pros and cons as well as our own findings on this topic.

  16. Bilirubin influence on oxidative lung damage and surfactant surface tension properties

    OpenAIRE

    Dani C.; Martelli E.; Tronchin M.; Buonocore G.; Longini M.; Di Filippo A; Giossi M.; Rubaltelli F.F.

    2004-01-01

    To study the hypothesis that hyperbilirubinemia might reduce in vivo oxidative lung damage while also diminishing lung surfactant surface tension properties during acute lung injury, we performed a randomized study in a rabbit model of acute lung injury. Twenty rabbits were randomized to receive bilirubin or saline intravenously. Acute lung injury was induced by lung lavages with saline. Lung tissue oxidation was evaluated by measuring total hydroperoxide (TH), advanced oxidation protein prod...

  17. Effect of Intravenous Fluid Supplementation on Serum Bilirubin Level in Jaundiced Healthy Neonates during Conventional Phototherapy

    Directory of Open Access Journals (Sweden)

    R Iranpour

    2004-08-01

    Full Text Available Background: Adequate hydration and good urine output improve the efficacy of phototherapy. The aim of this study was to evaluate the effect of intravenous fluid supplementation on decrease of serum bilirubin levels in jaundiced healthy term infants during conventional phototherapy. Methods: Sixty healthy breast-fed neonates with non-hemolytic hyperbilirubinemia were assigned randomly to receive either breast milk exclusively (non-supplemented group; n=30 or intravenous fluid in addition to breast milk (supplemented group; n=30 during conventional phototherapy. Results: The mean total serum bilirubin (TSB levels at the time of enrollment and within 84 hours after phototherapy were not statistically different between two groups. Similarly, the mean rate of decrease in TSB levels during the first 12 h of phototherapy were 0.13±0.06 and 0.10 ± 0.1 mg/dL/h in supplemented and non supplemented groups , respectively (P=0.13. Duration of phototherapy required in supplemented and non-supplemented groups was 58 ± 13.02 and 63.20 ± 13.71 hours, respectively (P=0.13. Conclusion: These data show that administration of extra intravenous fluid in jaundiced healthy, term, breastfed neonates have no beneficial effect on the rate of serum bilirubin reduction during conventional phototherapy. Keywords: Hyperbilirubinemia, Phototherapy, Neonates, Fluid Supplementation, Dehydration.

  18. Ternary complexes of albumin-Mn(II)-bilirubin and Electron Spin Resonance studies of gallstones

    CERN Document Server

    Chikvaidze, E N; Kirikashvili, I N; Mamniashvili, G I

    2009-01-01

    The stability of albumin-bilirubin complex was investigated depending on pH of solution. It was shown that the stability of complex increases in presence of Mn(II) ions. It was also investigated the paramagnetic composition of gallstones by the electron spin resonance (ESR) method. It turned out that all investigated gallstones contain a free bilirubin radical-the stable product of its radical oxidation. Accordingly the paramagnetic composition gallstones could be divided on three main types: cholesterol, brown pigment and black pigment stones. ESR spectra of cholesterol stones is singlet with g=2.003 and splitting between components 1.0 mT. At the same time the brown gallstones, besides aforementioned signal contain the ESR spectrum which is characteristics for Mn(II) ion complexes with inorganic compounds and, finally, in the black pigment stones it was found out Fe(III) and Cu(II) complexes with organic compounds and a singlet of bilirubin free radical. It is supposed that crystallization centers of gallst...

  19. Fluorescence Excitation Spectrum of Bilirubin in Blood: A Model for the Action Spectrum for Phototherapy of Neonatal Jaundice†

    OpenAIRE

    Lamola, Angelo A.; Russo, Marie

    2013-01-01

    A recent report (Lamola et al. 2013 Pediatric Research, 74, 54–60) presents a semi-empirical model for facile calculation of an action spectrum for bilirubin photochemistry in vivo using the most current knowledge of the optics of neonatal skin. The calculations indicate that competition for phototherapy light by hemoglobin in the skin is the predominant factor that defines the spectrum of light absorbed by bilirubin. If the latter is correct, a valid physical analog of the calculated spectru...

  20. Inverse association between serum bilirubin levels and arterial stiffness in Korean women with type 2 diabetes.

    Directory of Open Access Journals (Sweden)

    Eun Sook Kim

    Full Text Available BACKGROUND: Considerable evidence suggests that bilirubin is a potent physiologic antioxidant that may provide important protection against cardiovascular disease (CVD and inflammation. We investigated the relationship between serum total bilirubin (TB levels and arterial stiffness, measured by the brachial-ankle pulse wave velocity (baPWV, in patients with type 2 diabetes. METHODS: We conducted a cross-sectional analysis of 1,711 subjects with type 2 diabetes (807 men and 904 women; mean age, 57.1 years. The subjects were stratified based on gender-specific tertiles of TB values, and a high baPWV was defined as greater than 1,745 cm/s ( >75th percentile. RESULTS: The serum TB concentration was negatively correlated with the duration of diabetes, HbA1c, the 10-year Framingham risk score, and baPWV and was positively correlated with high-density lipoprotein cholesterol and the eGFR in both genders. Inverse association between TB categories and unadjusted prevalence of high PWV was only observed in women. After adjusting for confounding factors, the TB levels were inversely associated with a greater risk of a high baPWV, both as a continuous variable [a 1-SD difference; odds ratio (OR, 0.70; 95% confidence interval (CI, 0.54-0.90; P = 0.005] and when categorized in tertiles (the highest vs. the lowest tertile; OR, 0.49; 95% CI, 0.28-0.85; P = 0.011 in women but not in men. The relationship remained significant even after adjusting for retinopathy and nephropathy. CONCLUSIONS: Low TB levels were significantly associated with arterial stiffness in Korean women with type 2 diabetes. Our data suggested that bilirubin may protect against macrovascular disease in diabetic women.

  1. Utility of bilirubins and bile acids as endogenous biomarkers for the inhibition of hepatic transporters.

    Science.gov (United States)

    Watanabe, Tomoko; Miyake, Manami; Shimizu, Toshinobu; Kamezawa, Miho; Masutomi, Naoya; Shimura, Takesada; Ohashi, Rikiya

    2015-04-01

    It is useful to identify endogenous substrates for the evaluation of drug-drug interactions via transporters. In this study, we investigated the utility of bilirubins, substrates of OATPs and MRP2, and bile acids and substrates of NTCP and BSEP, as biomarkers for the inhibition of transporters. In rats administered 20 and 80 mg/kg rifampicin, the plasma levels of bilirubin glucuronides were elevated, gradually decreased, and almost returned to the baseline level at 24 hours after administration without an elevation of alanine aminotransferase (ALT) and aspartate aminotransferase (AST). This result indicates the transient inhibition of rOatps and/or rMrp2. Although the correlation between free plasma concentrations and IC50 values of rOatps depended on the substrates used in the in vitro studies, the inhibition of rOatps by rifampicin was confirmed in the in vivo study using valsartan as a substrate of rOatps. In rats administered 10 and 30 mg/kg cyclosporin A, the plasma levels of bile acids were elevated and persisted for up to 24 hours after administration without an elevation of ALT and AST. This result indicates the continuous inhibition of rNtcp and/or rBsep, although there were differences between the free plasma or liver concentrations and IC50 values of rNtcp or rBsep, respectively. This study suggests that the monitoring of bilirubins and bile acids in plasma is useful in evaluating the inhibitory potential of their corresponding transporters. PMID:25581390

  2. Identification of heme oxygenase-1 stimulators by a convenient ELISA-based bilirubin quantification assay.

    Science.gov (United States)

    Rücker, Hannelore; Amslinger, Sabine

    2015-01-01

    The upregulation of heme oxygenase-1 (HO-1) has proven to be a useful tool for fighting inflammation. In order to identify new HO-1 inducers, an efficient screening method was developed which can provide new lead structures for drug research. We designed a simple ELISA-based HO-1 enzyme activity assay, which allows for the screening of 12 compounds in parallel in the setting of a 96-well plate. The well-established murine macrophage cell line RAW264.7 is used and only about 26µg of protein from whole cell lysates is needed for the analysis of HO-1 activity. The quantification of HO-1 activity is based on an indirect ELISA using the specific anti-bilirubin antibody 24G7 to quantify directly bilirubin in the whole cell lysate, applying a horseradish peroxidase-tagged antibody together with ortho-phenylenediamine and H2O2 for detection. The bilirubin is produced on the action of HO enzymes by converting their substrate heme to biliverdin and additional recombinant biliverdin reductase together with NADPH at pH 7.4 in buffer. This sensitive assay allows for the detection of 0.57-82pmol bilirubin per sample in whole cell lysates. Twenty-three small molecules, mainly natural products with an α,β-unsaturated carbonyl unit such as polyphenols, including flavonoids and chalcones, terpenes, an isothiocyanate, and the drug oltipraz were tested at typically 6 or 24h incubation with RAW264.7 cells. The activity of known HO-1 inducers was confirmed, while the chalcones cardamonin, flavokawain A, calythropsin, 2',3,4'-trihydroxy-4-methoxychalcone (THMC), and 2',4'-dihydroxy-3,4-dimethoxychalcone (DHDMC) were identified as new potent HO-1 inducers. The highest inductive power after 6h incubation was found at 10µM for DHDMC (6.1-fold), carnosol (3.9-fold), butein (3.1-fold), THMC (2.9-fold), and zerumbone (2.5-fold). Moreover, the time dependence of HO-1 protein production for DHDMC was compared to its enzyme activity, which was further evaluated in the presence of

  3. Potential Cardiovascular Risk Protection of Bilirubin in End-Stage Renal Disease Patients under Hemodialysis

    OpenAIRE

    Maria do Sameiro-Faria; Michaela Kohlova; Sandra Ribeiro; Petronila Rocha-Pereira; Laetitia Teixeira; Henrique Nascimento; Flávio Reis; Vasco Miranda; Elsa Bronze-da-Rocha; Alexandre Quintanilha; Luís Belo; Elísio Costa; Alice Santos-Silva

    2014-01-01

    We evaluated the potential cardiovascular risk protection of bilirubin in hemodialysis (HD) patients. An enlarged set of studies were evaluated in 191 HD patients, including hematological study, lipid profile, iron metabolism, nutritional, inflammatory markers, and dialysis adequacy. The TA duplication screening in the UDP-glucuronosyltransferase 1 A1 (UGT1A1) promoter region was also performed. The UGT1A1 genotype frequencies in HD patients were 49.2%, 42.4%, and 8.4% for 6/6, 6/7, and 7/7 g...

  4. Mitochondrial targeting of bilirubin regulatory enzymes: An adaptive response to oxidative stress

    Energy Technology Data Exchange (ETDEWEB)

    Muhsain, Siti Nur Fadzilah, E-mail: sitinurfadzilah077@ppinang.uitm.edu.my [The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 4072 Brisbane, Queensland (Australia); Faculty of Pharmacy, University Teknologi Mara (Malaysia); Lang, Matti A., E-mail: m.lang@uq.edu.au [The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 4072 Brisbane, Queensland (Australia); Abu-Bakar, A' edah, E-mail: a.abubakar@uq.edu.au [The University of Queensland, National Research Centre for Environmental Toxicology (Entox), 4072 Brisbane, Queensland (Australia)

    2015-01-01

    The intracellular level of bilirubin (BR), an endogenous antioxidant that is cytotoxic at high concentrations, is tightly controlled within the optimal therapeutic range. We have recently described a concerted intracellular BR regulation by two microsomal enzymes: heme oxygenase 1 (HMOX1), essential for BR production and cytochrome P450 2A5 (CYP2A5), a BR oxidase. Herein, we describe targeting of these enzymes to hepatic mitochondria during oxidative stress. The kinetics of microsomal and mitochondrial BR oxidation were compared. Treatment of DBA/2J mice with 200 mg pyrazole/kg/day for 3 days increased hepatic intracellular protein carbonyl content and induced nucleo-translocation of Nrf2. HMOX1 and CYP2A5 proteins and activities were elevated in microsomes and mitoplasts but not the UGT1A1, a catalyst of BR glucuronidation. A CYP2A5 antibody inhibited 75% of microsomal BR oxidation. The inhibition was absent in control mitoplasts but elevated to 50% after treatment. An adrenodoxin reductase antibody did not inhibit microsomal BR oxidation but inhibited 50% of mitochondrial BR oxidation. Ascorbic acid inhibited 5% and 22% of the reaction in control and treated microsomes, respectively. In control mitoplasts the inhibition was 100%, which was reduced to 50% after treatment. Bilirubin affinity to mitochondrial and microsomal CYP2A5 enzyme is equally high. Lastly, the treatment neither released cytochrome c into cytoplasm nor dissipated membrane potential, indicating the absence of mitochondrial membrane damage. Collectively, the observations suggest that BR regulatory enzymes are recruited to mitochondria during oxidative stress and BR oxidation by mitochondrial CYP2A5 is supported by mitochondrial mono-oxygenase system. The induced recruitment potentially confers membrane protection. - Highlights: • Pyrazole induces oxidative stress in the mouse liver. • Pyrazole-induced oxidative stress induces mitochondrial targeting of key bilirubin regulatory enzymes, HMOX1

  5. Total bilirubin in nasogastric aspirates: A potential new indicator of postoperative gastrointestinal recovery

    OpenAIRE

    Go Miyano; Hiroki Nakamura; Toshiaki Takahashi; Lane, Geoffrey J.; Atsuyuki Yamataka

    2013-01-01

    Background: The aim of our study was to investigate if total bilirubin (T-bil), amylase (Amy), and sodium (Na) in nasogastric (NG) aspirates can reflect gastrointestinal motility reliably. Materials and Methods: NG aspirates from all laparotomies lasting more than 150 min in children less than 12 months old were studied for 3 months. Color of aspirates and intensity of bowel sounds were graded every 3 h by nursing staff and aspirate samples for measuring T-bil, Amy, and Na were collected inde...

  6. The predictive value of first day bilirubin levels for early discharged newborns.

    Directory of Open Access Journals (Sweden)

    MUSTAFA TOLGA ÜNSÜR

    2015-09-01

    Full Text Available Objective: Early discharge of newborns is essential because of social, economic an medical reasons in our area, but it increases readmission rates especially for hyperbilirubinemia. Hence, predicting the high risk neonates for subsequent hyperbilirubinemia is required. This study was designed to investigate which level of total serum bilirubin (TSB at the first day could be used to predict hyperbilirubinemia .Methods: The venous blood samples obtained from 300 newborns at post-partum 24±6 hours for blood group, direct coomb’s, TSB and direct bilirubin level (DBL. These newborns were followed up during 5- day and TSB and DBLwere detected in 90 newborns with jaundice again according to Kramer dermal zones at 120±6 hours of age.Results: In 23.3% of 90 newborns phototherapy was needed. The cut off value of TSB at the first day to define newborns at high risk for subsequent hyperbilirubinemia was 6.50 mg/dl with positive predictive value 19.75%, negative predictive value 97.72%. At that point sensitivity was 76.19%, specificity was 76.70%.Conclusion: The cut-off point of 6.5 mg/dl of TSB at the first day might be used to predict subsequent hyperbilirubinemia risk at healthy, full-term early discharged newborns as the test is economic and available in all healthcare units.

  7. Heme oxygenase-1-derived bilirubin protects endothelial cells against high glucose-induced damage.

    Science.gov (United States)

    He, Meihua; Nitti, Mariapaola; Piras, Sabrina; Furfaro, Anna Lisa; Traverso, Nicola; Pronzato, Maria Adelaide; Mann, Giovanni E

    2015-12-01

    Hyperglycemia and diabetes are associated with endothelial cell dysfunction arising from enhanced oxidative injury, leading to the progression of diabetic vascular pathologies. The redox-sensitive transcription factor nuclear factor-E2-related factor 2 (Nrf2) is a master regulator of antioxidant genes, such as heme oxygenase-1 (HO-1), involved in cellular defenses against oxidative stress. We have investigated the pathways involved in high glucose-induced activation of HO-1 in endothelial cells and examined the molecular mechanisms underlying cytoprotection. Elevated d-glucose increased intracellular generation of reactive oxygen species (ROS), leading to nuclear translocation of Nrf2 and HO-1 expression in bovine aortic endothelial cells, with no changes in cell viability. Superoxide scavenging and inhibition of endothelial nitric oxide synthase (eNOS) abrogated upregulation of HO-1 expression by elevated glucose. Inhibition of HO-1 increased the sensitivity of endothelial cells to high glucose-mediated damage, while addition of bilirubin restored cell viability. Our findings establish that exposure of endothelial cells to high glucose leads to activation of endogenous antioxidant defense genes via the Nrf2/ARE pathway. Upregulation of HO-1 provides cytoprotection against high glucose-induced oxidative stress through the antioxidant properties of bilirubin. Modulation of the Nrf2 pathway in the early stages of diabetes may thus protect against sustained damage by hyperglycemia during progression of the disease.

  8. Spontaneous evolution in bilirubin levels predicts liver-related mortality in patients with alcoholic hepatitis.

    Directory of Open Access Journals (Sweden)

    Minjong Lee

    Full Text Available The accurate prognostic stratification of alcoholic hepatitis (AH is essential for individualized therapeutic decisions. The aim of this study was to develop a new prognostic model to predict liver-related mortality in Asian AH patients. We conducted a hospital-based, retrospective cohort study using 308 patients with AH between 1999 and 2011 (a derivation cohort and 106 patients with AH between 2005 and 2012 (a validation cohort. The Cox proportional hazards model was constructed to select significant predictors of liver-related death from the derivation cohort. A new prognostic model was internally validated using a bootstrap sampling method. The discriminative performance of this new model was compared with those of other prognostic models using a concordance index in the validation cohort. Bilirubin, prothrombin time, creatinine, potassium at admission, and a spontaneous change in bilirubin levels from day 0 to day 7 (SCBL were incorporated into a model for AH to grade the severity in an Asian patient cohort (MAGIC. For risk stratification, four risk groups were identified with cutoff scores of 29, 37, and 46 based on the different survival probabilities (P<0.001. In addition, MAGIC showed better discriminative performance for liver-related mortality than any other scoring system in the validation cohort. MAGIC can accurately predict liver-related mortality in Asian patients hospitalized for AH. Therefore, SCBL may help us decide whether patients with AH urgently require corticosteroid treatment.

  9. Effects of aluminum chloride on serum proteins, bilirubin, and hepatic trace elements in chickens.

    Science.gov (United States)

    Wang, Ben; Zhu, Yanzhu; Zhang, Hongling; Liu, Liming; Li, Guojiang; Song, Yongli; Li, Yanfei

    2016-09-01

    The aim of this study was to reveal the effects of aluminum chloride (AlCl3) on the hepatic metabolism function and trace elements' distribution. Two hundred healthy male chickens (1 day old) were intraperitoneally administered with AlCl3 (0, 18.31, 27.47, and 36.62 mg kg(-1) day(-1) of Al(3+)) consecutively for 3 days. Then the chickens were allowed to rest for 1 day. The cycle lasted four days. The cycle was repeated 15 times (60 days). The contents of serum total protein (TP), albumin (ALB), total bilirubin (TBI), direct bilirubin (DBI), hepatic aluminum (Al), copper (Cu), iron (Fe), and zinc (Zn) were examined. The results showed that the contents of serum TP and ALB and hepatic Fe and Zn decreased and the contents of serum TBI and DBI and hepatic Al and Cu increased in the chickens with AlCl3 This indicates that chronic administration of AlCl3 impairs the hepatic metabolism function and disorders the hepatic trace elements' distribution. PMID:25896954

  10. Photo-isomerization and oxidation of bilirubin in mammals is dependent on albumin binding.

    Science.gov (United States)

    Goncharova, Iryna; Jašprová, Jana; Vítek, Libor; Urbanová, Marie

    2015-12-01

    The bilirubin (BR) photo-conversion in the human body is a protein-dependent process; an effective photo-isomerization of the potentially neurotoxic Z,Z-BR as well as its oxidation to biliverdin in the antioxidant redox cycle is possible only when BR is bound on serum albumin. We present a novel analytical concept in the study of linear tetrapyrroles metabolic processes based on an in-depth mapping of binding sites in the structure of human serum albumin (HSA). A combination of fluorescence spectroscopy, circular dichroism (CD) spectroscopy, and molecular modeling methods was used for recognition of the binding site for BR, its derivatives (mesobilirubin and bilirubin ditaurate), and the products of the photo-isomerization and oxidation (lumirubin, biliverdin, and xanthobilirubic acid) on HSA. The CD spectra and fluorescent quenching of the Trp-HSA were used to calculate the binding constants. The results of the CD displacement experiments performed with hemin were interpreted together with the findings of molecular docking performed on the pigment-HSA complexes. We estimated that Z,Z-BR and its metabolic products bind on two independent binding sites. Our findings support the existence of a reversible antioxidant redox cycle for BR and explain an additional pathway of the photo-isomerization process (increase of HSA binding capacity; the excess free [unbound] BR can be converted and also bound to HSA).

  11. Effects of Calcium Ions on Thermodynamic Properties of Mixed Bilirubin/Cholesterol Monolayers

    Institute of Scientific and Technical Information of China (English)

    Qiong Wu; Yu-feng Tang; Ye-min Li; An-jian Xie; Yu-hua Shen; Jin-miao Zhu; Chuan-hao Li

    2008-01-01

    The mixed monolayer behavior of bilirubin/cholesterol was studied through surface pressure-area (π-A) isotherms on aqueous solutions containing various concentrations of calcium ions.Based on the data of π-A isotherms,the mean area per molecule,collapse pressure,surface compressibility modulus,excess molecular areas,free energy of mixing,and excess free energy of mixing of the monolayers on different subphases were calculated.The results show an expansion in the structure of the mixed monolayer with Ca2+ in subphase, and non-ideal mixing of the components at the air/water interface is observed with positive deviation from the additivity rule in the excess molecular areas.The miscibility between the components is weakened with the increase of concentration of Ca2+ in subphase.The facts indicate the presence of coordination between Ca2+ and the two components.The mixed monolayer,in which the molar ratio of bilirubin to cholesterol is 3:2,is more stable from a thermodynamic point of view on pure water.But the stable 3:2 stoichiometry complex is destroyed with the increase of the concentration of Ca2+ in subphase.Otherwise,the mixed monolayers have more thermodynamic stability at lower surface pressure on Ca2+ subphase.

  12. 胆红素脑病与胆红素/血浆白蛋白比值关系探讨%The study of the relationship between bilirubin encephalopathy and bilirubin/albumin

    Institute of Scientific and Technical Information of China (English)

    刘新晖; 李贵南; 胡月圆; 张慧; 周勇

    2011-01-01

    目的 探讨胆红素脑病与血清胆红素/血浆白蛋白比值( B/A)的关系.方法 对2008年11月至2009年10月本院住院的高胆红素血症患儿进行回顾性总结,分为胆红素脑病组(病例组)与非胆红素脑病组(对照组),对住院期间的血清胆红素高峰值、血浆白蛋白以及B/A等因素之间的关系进行统计学分析.结果 共收集到2253例高胆红素血症患儿,其中88例诊断胆红素脑病.病例组B/A为(1.59±0.47),对照组B/A为(0.80±0.28),差异有统计学意义(t=474.537,P=0.000).B/A比值为0~1.0、1.1 ~2.0、2.1 ~3.0时,胆红素脑病发生率分别为0.5%、12.9%、69.2%.结论 胆红素脑病的发生与B/A比值有关,B/A越高,发生胆红素脑病的危险性越大.%Objective The relationship between the bilirubin encephalopathy and bilirubin/ albumin (B/A) is discussed. Methods Cases with hyperbilirubinemia in hospital from Dec 2008 to Oct 2009, assigned into bilirubin encephalopathy group and control group, the relationship among bilirubin peak, albumin and B/A were analyzed retrospectively. Results Of the 2253 babies with hyperbilirubinemia, A total of 88 babies developed bilirubin encephalopathy. The B/A value in bilirubin encephalopathy group was 1. 59 ±0. 47, and control group was 0. 80 ±0. 28, with significant differences between two groups (t = 474. 537, P = 0. 000). The incidence of bilirubin encephalopathy at different levels of B/A was different; 0 - 1. 0, 0. 5% ; 1. 1 -2.0, 12. 9% ; 2. 1 - 3. 0, 69. 2% . Conclusion The incidence of bilirubin encephalopathy is significantly associated with the levels of B/A.

  13. Fluorescence excitation spectrum of bilirubin in blood: a model for the action spectrum for phototherapy of neonatal jaundice.

    Science.gov (United States)

    Lamola, Angelo A; Russo, Marie

    2014-01-01

    A recent report (Lamola et al. 2013 Pediatric Research, 74, 54-60) presents a semiempirical model for facile calculation of an action spectrum for bilirubin photochemistry in vivo using the most current knowledge of the optics of neonatal skin. The calculations indicate that competition for phototherapy light by hemoglobin in the skin is the predominant factor that defines the spectrum of light absorbed by bilirubin. If the latter is correct, a valid physical analog of the calculated spectrum is the excitation spectrum of bilirubin in blood. The fluorescence excitation spectrum was recorded and, indeed, found to be very similar to the calculated spectrum. Both spectra exhibit maxima near 476 nm and widths at half height of about 50 nm. This result supports the conclusion that light between 460 and 490 nm is most effective for phototherapy of neonatal jaundice. PMID:23998276

  14. Lower carotid intima media thickness is predicted by higher serum bilirubin in both non-diabetic and Type 2 diabetic subjects

    NARCIS (Netherlands)

    Dullaart, Robin P. F.; Kappelle, Paul J. W. H.; de Vries, Rindert

    2012-01-01

    Background: Higher serum bilirubin levels may be implicated cardiovascular protection. It is unknown whether the impact of serum bilirubin on carotid artery intima media thickness (IMT), a marker of subclinical atherosclerosis, is different in diabetic subjects compared to non-diabetic subjects. We

  15. Significance of total bilirubin/albumin in predicting bilirubin neurotoxicity%新生儿总胆红素与白蛋白比值对预测胆红素神经毒性的临床意义

    Institute of Scientific and Technical Information of China (English)

    陈清; 苏卫东; 瞿尔力; 黄育丹; 邓秀睿

    2011-01-01

    目的 探讨新生儿血清总胆红素/白蛋白在预测胆红素神经毒性方面的临床意义.方法 选择2007年5月至2010年8月住院治疗的高胆红素血症新生儿83例,检测其血清总胆红素和白蛋白等,并计算血清总胆红素/白蛋白,同时根据脑干听觉诱发电位(BAEP)的检测结果分为BAEP正常组和BAEP异常组,并对比观察.结果 BAEP异常组27例,BAEP正常组56例,BAEP 异常组的血清总胆红素、血清总胆红素/白蛋白均显著高于BAEP正常组[(356.50±59.23)μmol/L比(318.70±55.12)μmol/L、(5.02±0.49)×10-3比(4.56±0.43)×10-3],差异有统计学意义(P0.05).结论 血清总胆红素/白蛋白较血清总胆红素更能反映高胆红素血症新生儿血中游离胆红素的水平,可作为评估胆红素神经毒性危险因素的指标之一.%Objective To investigate the significance of total bilirubin/albumin in predicting bilirubin neurotoxicity.Methods Eighty-three cases with hyperbilirubinemia who treated from May 2007 to August 2010 were selected,the serum total bilirubin and albumin were detected and total bilirubin/albumin was calculated.According to brainstem auditory evoked potential(BAEP)results,the patients were divided into normal BAEP group and abnormal BAEP group and compared.Results There were 27 cases of abnormal BAEP group and 56 cases of normal BAEP group.Total bilirubin and total bilirubin/albumin in abnormal BAEP group were higher than those in normal BAEP group[(356.50±59.23)μmol/L vs.(318.70±55.12)μmol/L,(5.02±0.49)×10-3 vs.(4.56±0.43)×10-3],the differences were significant (P0.05).Conclusion Total bilirubin/albumin can reflect serum unconjugated bilirubin level of neonatus with hyperbilirubinemia better than total bilirubin,and it can can be taken as one index to evaluate the risk factors of bilirubin neurotoxicity.

  16. The Effect of Clofibrate on Decreasing Serum Bilirubin in Healthy Term Neonates Under Home Phototherapy

    Directory of Open Access Journals (Sweden)

    Simin Sharafi

    2010-03-01

    Full Text Available Objective: this study was designed to determine the effect of clofibrate on neonatal uncomplicated jaundice treated with home phototherapy. Methods:This clinical trial study was performed on 60 newborns with jaundice that received home phototherapy. Inclusion criteria were body weight between 2500 to 4000 gr, breastfed, total serum bilirubin (TSB between 14 to 20 mg/dl, aged over 72 hours. The neonates were randomly divided into two groups. All received home phototherapy. Group i received a single dose of 50 mg/kg clofibrate and the other group served as control group. Total serum bilirubin level was measured every 24 hours. Findings:Two groups were matched regarding weight, sex, age and first TSB. At 24 and 48 hours of treatment, the mean values of TSB in the clofibrate group were 13.72 (1.56, 9.5 (0.56 and in the control group 15.30 (1.44, 12.6 (1.44. The results show that TSB was significantly decreased after 24 and 48 hours in clofibrate group (P<0.001. The mean duration of phototherapy in group I was 72(0.0 hours and in the control group 76.80 (±9.76 hours. The duration of phototherapy was significantly shorter in clofibrate group (P<0.001. Conclusion:Clofibrate is effective for outpatients with neonatal hyperbilirubinemia who are under home phototherapy. Of course, further studies are needed for approved routine use of this drug in the treatment of neonatal jaundice.

  17. [Postpartal serum bilirubin levels in the newborn after induction of labour with "prostaglandin cap" or oxytocin (author's transl)].

    Science.gov (United States)

    Grünberger, W; Coradello, H; Huber, J; Husslein, P

    1981-04-01

    In the course of a prospective study the development of Serum bilirubine levels was controlled in 90 neonates. In 30 cases labour had been induced by means of intravenous oxytocin infusion, in a further 30 cases by means of local peri-cervical prostaglandine E2 (PGE2)-application. The control group consisted of 30 children, with spontaneous onset of labour. Anamnesis, duration of gravidity, course of labour and method of delivery were the same in all groups; the neonates were all treated the same. The serum bilirubine was determined fotometrically with the Greiner Selective Analyzer GSA II on the 1st, 3rd and 5th post partum day and the results assessed by the multivariant analysis according to Newman-Keuls. No differences were found between the PGE2- and the control group, the bilirubine values of the oxytocin groups were significantly higher (p less than 0.001). Icteric neonates with serum bilirubine values of greater than 12 mg% were found more than double as often in the oxytocin group than in the PGE2- group (7:3). The results indicate, that for labour induction by pharmaceuticals, local application of PGE2 by means of a portio cap should be favored over intravenous oxytocin administration.

  18. The Research of Bilirubin Levels in Neonatal Cerebrospinal Fluid in the Diagnosis of Bilirubin Encephalopathy%新生儿脑脊液胆红素在胆红素脑病诊断中的研究

    Institute of Scientific and Technical Information of China (English)

    孙路璐; 金玉莲; 刘光辉; 张健; 郑洪

    2013-01-01

    Objective To investigate the value of concentration of bilirubin in cerebrospinal fluid for early diagnosis of neonatal bilirubin encephalopathy.Methods 34 cases with bilirubin encephalopathy and 37 cases with non-bilirubin encephalopathy as control group were chosen from February 2011 to October 2012.The concentrations of unconjugated bilirubin in cerebrospinal fluid and unconjugated bilirubin in serum of two groups were compared.According to the ROC curve,their critical value,sensitivity,specificity,positive predictive value and negative predictive value in the diagnosis of bilirubin encephalopathy were analyzed.Results The unconjugated bilirubin in cerebrospinal fluid in the bilirubin encephalopathy group (13.88 ± 5.03)μmol/L was significant higher than that in the control group (5.83 ± 4.30)μmol/L(P < 0.01),there was statistical significance in difference (P < 0.01).The area under curve of unconjugated bilirubin in cerebrospinal fluid(0.909) was larger than that of unconjugated bilirubin in serum(0.692),according to the ROC curve.When the critical value was 9.55 μmol/L,the sensitivity and specificity of unconjugated bilirubin in cerebrospinal fluid in the diagnosis of neonatal bilirubin encephalopathy were 86.7% and 93.9%,respectively.Conclusion Unconjugated bilirubin in cerebros-pinal fluid value was a good indicator for predicting bilirubin encephalopathy and it was helpful to provide information for rational clinical treatment of hyperbilirubinemia.%目的 探讨高胆红素血症新生儿脑脊液未结合胆红素水平对胆红素脑病的早期诊断价值.方法 以2011年2月-2012年10月入院的34例胆红素脑病患儿(病例组)和37例单纯高胆红素血症患儿(对照组)为研究对象,比较两组脑脊液及血清未结合胆红素水平,并绘制ROC曲线,计算脑脊液未结合胆红素及血清未结合胆红素水平在诊断胆红素脑病中的临界值、灵敏度、特异度、阳性预

  19. BILIRUBIN CONCENTRATIONS IN CLINICALLY HEALTHY AND DISEASED CAPTIVE WATERBUCK (KOBUS ELLIPSIPRYMNUS) AT THE SAN DIEGO ZOO SAFARI PARK.

    Science.gov (United States)

    Sadler, Ryan A; Lamberski, Nadine; Christopher, Mary M

    2016-06-01

    Captive waterbuck ( Kobus ellipsiprymnus ) that appear clinically healthy have been noted to have high serum bilirubin concentrations compared with other ruminants; however, questions remain about the physiologic factors affecting bilirubin concentration and its potential association with underlying disease and icteric serum or mucous membranes. Serum bilirubin concentrations of healthy and diseased waterbuck housed at the San Diego Zoo Safari Park from 1989 to 2012 were retrospectively analyzed to determine any link between icteric serum, total bilirubin concentration (tBili), and disease entities in this species. Total bilirubin and direct (dBili) bilirubin concentrations and the prevalence of icteric serum were compared by subspecies, age group, and health status; associations with complete blood count and biochemical results and clinical diagnosis were assessed. No significant differences were found in tBili or dBili between Ellipsen (n = 32) and Defassa (n = 29) subspecies or in juveniles (n = 22) versus adults (n = 39). Clinically healthy waterbuck (n = 40) had significantly higher tBili (mean ± 2SD, 7.9 ± 1.2 mg/dl; P < 0.001) and dBili (3.7 ± 1.0 mg/dl; P < 0.001) than did diseased waterbuck (n = 21; tBili: 4.9 ± 2.56 mg/dl; dBili: 2.2 ± 0.8 mg/dl). No waterbuck had icteric tissues on physical examination. Twelve (19.7%) waterbuck (six healthy, six diseased) had icteric serum. Few minor correlations were seen between tBili or dBili and clinical, laboratory, or necropsy evidence of disease, though an inverse correlation between dBili and blood glucose was noted. Of the 40 healthy animals, reference intervals were calculated for tBili (5.5-10.3 mg/dl), dBili (1.7-5.7 mg/dl), and indirect bilirubin (2.2-6.2 mg/dl). These results suggest healthy waterbuck have relatively high tBili and dBili compared with related species. Icteric serum may be seen in up to 15% of healthy animals in the absence of icteric tissues.

  20. Transcutaneous bilirubin--comparing the accuracy of BiliChek(R) and JM 103(R) in a regional postnatal unit.

    LENUS (Irish Health Repository)

    Qualter, Yvonne M

    2012-01-31

    OBJECTIVE: Transcutaneous bilirubin (TcB) has the potential to reduce serum bilirubin sampling. During a recent survey on the use of TcB in postnatal units in the Republic of Ireland, we identified that only 58% of the 19 units were using TcB and that only two devices were in use, the BiliChek(R) and JM 103(R). We aimed to evaluate and compare these two devices in a regional postnatal unit. METHODS: To evaluate and compare the accuracy of the BiliChek(R) and JM 103(R), we studied simultaneous TcB and total serum bilirubin (TSB) measurements from a population of jaundiced term and near term infants. We evaluated each device with regard to correlation with TSB and potential to safely reduce serum bilirubin testing. RESULTS: Both TcB devices strongly correlated with TSB (r = 0.88 for BiliChek(R) and r = 0.70 for JM 103(R). The BiliChek(R) and JM 103(R) were accurate up to cut-off values of 200 mumol\\/L and 180 mumol\\/L, respectively. Using Bhutani\\'s nomogram, 100% sensitivity was achieved using the 75th percentile for BiliChek(R) and the 40th percentile for JM 103(R). CONCLUSION: Both TcB devices correlated closely with moderately increased TSB levels and are suitable screening tools to identify jaundiced infants that require a serum bilirubin, with upper limit cut-off values. Both devices reduced the need for TSB levels. We found the BiliChek(R) slightly more accurate than the JM 103(R) for our study population. TcB however, is not in widespread use.

  1. Effects of Bilirubin on Alveolar Macrophages in Rats with Emphysema and Expression of iNOS and NO in Them

    Institute of Scientific and Technical Information of China (English)

    李建强; 赵卉; 宋满景; 徐永健; 张珍祥

    2004-01-01

    To explore the effects of bilirubin on alveolar macrophages (AM) and expression of iNOS and NO in them in emphysema model, the rats were pretreated with bilirubin before exposed to smoke. AM were isolated from bronchoalveolar lavage fluid (BALF) and cultured. Pathological microscopic examination of AM and immunohistochemical analysis of iNOS were performed. Nitric oxide (NO) content in the samples was determined by nitrate reductase technique. The results showed both alveoli and alveolar septum appeared normal in size and shape in normal group. AM showed kidney-shaped nucleus and were rich in Golgi complexes and primary lysosomes in the cytoplasm. The inner membrane of mitochondrion was continuous. Most cristae of the mitochondria were intact. In model group, the alveoli were expanded, ruptured and bullaes were formed. Both the population and sizes of AM increased significantly. Secondary lysosomes were rich in the cytoplasm. Deformation and pyknosis of the nucleus, swelling of the mitochondrions and rupture of the inner mitochondrial membrane could also be seen. At high magnification, most of the mitochondrial cristae were broken, or completely lost at certain points. In bilirubin group, alveoli partly expanded and the population of AM also increased, with morphological changes being slighter than that in model group. Both NO contents and expression of iNOS in model group were higher than those in normal group (P<0.05). In bilirubin group the two indice were lower than those in model group (P<0.05). Our findings suggested that high expression of iNOS and high NO content in AM accelerate the development of emphysema associated with smoking in rats. Bilirubin may exert protective effects on AM and retards the development of emphysema in rats.

  2. Research on prevention of bilirubin-induced brain injury and kernicterus: National Institute of Child Health and Human Development conference executive summary. 2003.

    Science.gov (United States)

    Blackmon, Lillian R; Fanaroff, Avroy A; Raju, Tonse N K

    2004-07-01

    In July 2003, the National Institute of Child Health and Human Development convened a conference, "Research on Prevention of Bilirubin-Induced Brain Injury and Kernicterus: Bench-to-Bedside." This article will provide a summary of presentations and discussions from this conference. The summary will focus on the identified knowledge gaps in 5 areas related to bilirubin-induced brain injury and kernicterus: 1) neurobiology and neuroimaging; 2) epidemiology and issues of clinical management; 3) methodologies for assessing clinical jaundice and direct and noninvasive measurement of serum bilirubin and hemolysis; 4) therapies for management of neonatal hyperbilirubinemia; and 5) public health surveillance and systems-based approaches to prevention. PMID:15231933

  3. Theory of the variable quantum yield of Bilirubin-IX Photoisomers: the end of a chapter

    International Nuclear Information System (INIS)

    Full text: Bilirubin-IX (BR-IX), responsible for neonatal jaundice, has two slightly different chromophores which undergo the Davidoff (exciton) interaction. Because of this, BR-IX in certain solvents, e.g. human serum albumin (but not Me/OH) exhibits magnetic circular dichroism (MCD), due to the exciton lines only. The absoption spectrum of BR-IX in the exciton line region is best fitted by two gaussian lines of equal width, but the MCD spectrum best fit requires two gaussian of unequal width: the gaussian assumption is made for ease of calculation. The difference between the fitted spectra shows up as a single broad line of maximum smaller than that of the gaussian lines, and in the region of the central portion of the gaussians overlap. The origin of this line is as yet unknown, so that much further work needs to be done on the structure of the excited state of BR-IX giving rise to the exciton interaction. This is currently being undertaken. However, the variation of the exciton interaction energy with wavelength as deduced from present theory seems reasonably certain though its origin may not be

  4. Characterization of erythrosine B binding to bovine serum albumin and bilirubin displacement.

    Science.gov (United States)

    Mathavan, Vinodaran M K; Boh, Boon Kim; Tayyab, Saad

    2009-08-01

    The interaction of crythrosine B (ErB), a commonly used dye for coloring foods and drinks, with bovine scrum albumin (BSA) was investigated both in the absence and presence of bilirubin (BR) using absorption and absorption difference spectroscopy. ErB binding to BSA was reflected from a significant red shift of 11 nm in the absorption maximum of ErB (527 nm) with the change in absorbance at lamdamax. Analysis of absorption difference spectroscopic titration results of BSA with increasing concentrations of ErB3 using Benesi-Hildebrand equation gave the association constant, K as 6.9 x 10(4) M(-1). BR displacing action of ErB was revealed by a significant blue shift in the absorption maximum, accompanied by a decrease in absorbance difference at lamdamax in the difference spectrum of BR-BSA complex upon addition of increasing concentrations of ErB. This was further substantiated by fluorescence spectroscopy, as addition of increasing concentrations of ErB to BR-BSA complex caused a significant decrease in fluoresccnce at 510 nm. The results suggest that ErB binds to a site in the vicinity of BR binding site on BSA. Therefore, intake of ErB may increase the risk of hyperbilirubinemia in the healthy subjects. PMID:19788065

  5. Analysis of binding ability of two tetramethylpyridylporphyrins to albumin and its complex with bilirubin.

    Science.gov (United States)

    Solomonov, Alexey V; Shipitsyna, Maria K; Vashurin, Arthur S; Rumyantsev, Evgeniy V; Timin, Alexander S; Ivanov, Sergey P

    2016-11-01

    An interaction between 5,10,15,20-tetrakis-(N-methyl-x-pyridyl)porphyrins, x=2; 4 (TMPyPs) with bovine serum albumin (BSA) and its bilirubin (BR) complex was investigated by UV-Viz and fluorescence spectroscopy under imitated physiological conditions involving molecular docking studies. The parameters of forming intermolecular complexes (binding constants, quenching rate constants, quenching sphere radius etc.) were determined. It was showed that the interaction between proteins and TMPyPs occurs via static quenching of protein fluorescence and has predominantly hydrophobic and electrostatic character. It was revealed that obtained complexes are relatively stable, but in the case of TMPyP4 binding with proteins occurs better than TMPyP2. Nevertheless, both TMPyPs have better binding ability with free protein compared to BRBSA at the same time. The influence of TMPyPs on the conformational changes in protein molecules was studied using synchronous fluorescence spectroscopy. It was found that there is no competition of BR with TMPyPs for binging sites on protein molecule and BR displacement does not occur. Molecular docking calculations have showed that TMPyPs can bind with albumin via tryptophan residue in the hydrophilic binding site of protein molecule but it is not one possible interaction way. PMID:27267279

  6. Bilirubin oxidase based enzymatic air-breathing cathode: Operation under pristine and contaminated conditions.

    Science.gov (United States)

    Santoro, Carlo; Babanova, Sofia; Erable, Benjamin; Schuler, Andrew; Atanassov, Plamen

    2016-04-01

    The performance of bilirubin oxidase (BOx) based air breathing cathode was constantly monitored over 45 days. The effect of electrolyte composition on the cathode oxygen reduction reaction (ORR) output was investigated. Particularly, deactivation of the electrocatalytic activity of the enzyme in phosphate buffer saline (PBS) solution and in activated sludge (AS) was evaluated. The greatest drop in current density was observed during the first 3 days of constant operation with a decrease of ~60 μA cm(-2) day(-1). The rate of decrease slowed to ~10 μA cm(-2) day(-1) (day 3 to 9) and then to ~1.5 μA cm(-2)day(-1) thereafter (day 9 to 45). Despite the constant decrease in output, the BOx cathode generated residual current after 45 days operations with an open circuit potential (OCP) of 475 mV vs. Ag/AgCl. Enzyme deactivation was also studied in AS to simulate an environment close to the real waste operation with pollutants, solid particles and bacteria. The presence of low-molecular weight soluble contaminants was identified as the main reason for an immediate enzymatic deactivation within few hours of cathode operation. The presence of solid particles and bacteria does not affect the natural degradation of the enzyme.

  7. Rapid determination of amphotericin B levels in serum by high-performance liquid chromatography without interference by bilirubin.

    OpenAIRE

    Hosotsubo, H; Takezawa, J; Taenaka, N; Hosotsubo, K; Yoshiya, I

    1988-01-01

    A high-performance liquid chromatographic method for the determination of amphotericin B concentrations in human serum without bilirubin interference was developed and compared with a microbiological assay. The high-performance liquid chromatographic assay utilized a reversed-phase trimethyl silica column, simple sample preparation, and visible detection. Reproducibility studies yielded coefficient-of-variation ranges from 1.02 to 2.11% for within-day precision and 2.88 to 4.32% for between-d...

  8. Studies on preparing and adsorption property of grafting terpolymer microbeads of PEI-GMA/AM/MBA for bilirubin.

    Science.gov (United States)

    Gao, Baojiao; Lei, Haibo; Jiang, Liding; Zhu, Yong

    2007-06-15

    Crosslinking copolymer microbeads with a diameter range of 100-150 microm were synthesized by suspension copolymerization of glycidyl methacrylate (GMA), acrylamide (AM) and N,N'-methylene bisacrylamide (MBA). Subsequently, polyethyleneimine (PEI) was grafted on the surfaces of the terpolymer microbeads GMA/AM/MBA via the ring-opening reaction of the epoxy groups, and the grafting microbeads PEI-GMA/AM/MBA were prepared. In this paper, the adsorption property of the grafting microbeads for bilirubin was mainly investigated, and the effects of various factors, such as pH value, ionic strength and grafting degree of PEI on the surface of grafting microbeads and the adsorption capacity of the grafting microbeads for bilirubin were examined. The batch adsorption experiment results show that by right of the action of grafted polyamine macromolecules PEI, the grafting microbeads PEI-GMA/AM/MBA have quite strong adsorption ability for bilirubin; the isotherm adsorption conforms to Freundlich equation. The pH value of the medium affects the adsorption capacity greatly, As in the nearly neutral solutions with pH 6, the grafting microbeads have the strongest adsorption ability for bilirubin, whereas in acidic and basic solutions their adsorption ability is weak. The ionic strength hardly affects the adsorption ability of the grafting microbeads. The grafting degree of PEI on the surfaces of the grafting microbeads also has a great effect on the adsorption capacity, and higher the grafting degree of PEI on the surface of the microbead PEI-GMA/AM/MBA, the stronger is the adsorption ability of the microbeads.

  9. Application of high-performance liquid chromatography combined with ultra-sensitive thermal lens spectrometric detection for simultaneous biliverdin and bilirubin assessment at trace levels in human serum.

    Science.gov (United States)

    Martelanc, Mitja; Žiberna, Lovro; Passamonti, Sabina; Franko, Mladen

    2016-07-01

    We present the applicability of a new ultra-sensitive analytical method for the simultaneous determination of biliverdin and bilirubin in human serum. The method comprises isocratic reversed-phase (RP) C18 high-performance liquid chromatography (HPLC) and thermal lens spectrometric detection (TLS) based on excitation by a krypton laser emission line at 407nm. This method enables the separation of IX-α biliverdin and IX-α bilirubin in 11min with limit of detection (LOD) and limit of quantitation (LOQ) for biliverdin of 1.2nM and 3nM, and 1nM and 2.8nM for bilirubin, respectively. In addition, a step-gradient elution was set up, by changing the mobile phase composition, in order to further enhance the sensitivity for bilirubin determination with LOD and LOQ of 0.5nM and 1.5nM, respectively. In parallel, an isocratic HPLC-DAD method was developed for benchmarking against HPLC-TLS methods. The LOD and LOQ for biliverdin were 6nM and 18nM, and 2.5nM and 8nM for bilirubin, respectively. Additionally, both isocratic methods were applied for measuring biliverdin and free bilirubin in human serum samples (from 2 male and 2 female healthy donors). Combining isocratic HPLC method with TLS detector was crucial for first ever biliverdin determination in serum together with simultaneous free bilirubin determination. We showed for the first time the concentration ratio of free bilirubin versus unbound biliverdin in human serum samples. PMID:27154653

  10. Human serum albumin-stabilized gold nanoclusters act as an electron transfer bridge supporting specific electrocatalysis of bilirubin useful for biosensing applications.

    Science.gov (United States)

    Santhosh, Mallesh; Chinnadayyala, Somasekhar R; Singh, Naveen K; Goswami, Pranab

    2016-10-01

    Human serum albumin (HSA)-stabilized Au18 nanoclusters (AuNCs) were synthesized and chemically immobilized on an Indium tin oxide (ITO) plate. The assembly process was characterized by advanced electrochemical and spectroscopic techniques. The bare ITO electrode generated three irreversible oxidation peaks, whereas the HSA-AuNC-modified electrode produced a pair of redox peaks for bilirubin at a formal potential of 0.27V (vs. Ag/AgCl). However, the native HSA protein immobilized on the ITO electrode failed to produce any redox peak for bilirubin. The results indicate that the AuNCs present in HSA act as electron transfer bridge between bilirubin and the ITO plate. Docking studies of AuNC with HSA revealed that the best docked structure of the nanocluster is located around the vicinity of the bilirubin binding site, with an orientation that allows specific oxidation. When the HSA-AuNC-modified electrode was employed for the detection of bilirubin using chronoamperometry at 0.3V (vs. Ag/AgCl), a steady-state current response against bilirubin in the range of 0.2μM to 7μM, with a sensitivity of 0.34μAμM(-1) and limit of detection of 86.32nM at S/N 3, was obtained. The bioelectrode was successfully applied to measure the bilirubin content in spiked serum samples. The results indicate the feasibility of using HSA-AuNC as a biorecognition element for the detection of serum bilirubin levels using an electrochemical technique. PMID:27126550

  11. Biliverdin reductase/bilirubin mediates the anti-apoptotic effect of hypoxia in pulmonary arterial smooth muscle cells through ERK1/2 pathway

    Energy Technology Data Exchange (ETDEWEB)

    Song, Shasha [Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical, University (Daqing), Daqing 163319 (China); Wang, Shuang [Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical, University (Daqing), Daqing 163319 (China); Biopharmaceutical Key Laboratory of Heilongjiang Province, Harbin 150081 (China); Ma, Jun; Yao, Lan; Xing, Hao; Zhang, Lei; Liao, Lin [Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical, University (Daqing), Daqing 163319 (China); Zhu, Daling, E-mail: dalingz@yahoo.com [Department of Biopharmaceutical Sciences, College of Pharmacy, Harbin Medical, University (Daqing), Daqing 163319 (China); Biopharmaceutical Key Laboratory of Heilongjiang Province, Harbin 150081 (China)

    2013-08-01

    Inhibition of pulmonary arterial smooth muscle cell (PASMC) apoptosis induced by hypoxia plays an important role in pulmonary arterial remodeling leading to aggravate hypoxic pulmonary arterial hypertension. However, the mechanisms of hypoxia acting on PASMC apoptosis remain exclusive. Biliverdin reductase (BVR) has many essential biologic roles in physiological and pathological processes. Nevertheless, it is unclear whether the hypoxia-induced inhibition on PASMC apoptosis is mediated by BVR. In the present work, we found BVR majorly localized in PASMCs and was up-regulated in levels of protein and mRNA by hypoxia. Then we studied the contribution of BVR to anti-apoptotic response of hypoxia in PASMCs. Our results showed that siBVR, blocking generation of bilirubin, reversed the effect of hypoxia on enhancing cell survival and apoptotic protein (Bcl-2, procasepase-9, procasepase-3) expression, preventing nuclear shrinkage, DNA fragmentation and mitochondrial depolarization in starved PASMCs, which were recovered by exogenous bilirubin. Moreover, the inhibitory effect of bilirubin on PASMC apoptosis under hypoxic condition was blocked by the inhibitor of ERK1/2 pathway. Taken together, our data indicate that BVR contributes to the inhibitory process of hypoxia on PASMC apoptosis, which is mediated by bilirubin through ERK1/2 pathway. Highlights: • BVR expresses in PASMC and is up-regulated by hypoxia in protein and mRNA levels. • BVR/bilirubin contribute to the inhibitive process of hypoxia on PASMC apoptosis. • Bilirubin protects PASMC from apoptosis under hypoxia via ERK1/2 pathway.

  12. Total bilirubin in nasogastric aspirates: A potential new indicator of postoperative gastrointestinal recovery

    Directory of Open Access Journals (Sweden)

    Go Miyano

    2013-01-01

    Full Text Available Background: The aim of our study was to investigate if total bilirubin (T-bil, amylase (Amy, and sodium (Na in nasogastric (NG aspirates can reflect gastrointestinal motility reliably. Materials and Methods: NG aspirates from all laparotomies lasting more than 150 min in children less than 12 months old were studied for 3 months. Color of aspirates and intensity of bowel sounds were graded every 3 h by nursing staff and aspirate samples for measuring T-bil, Amy, and Na were collected independently every 12 h until an oral fluid challenge was tolerated. Results: There were 26 subjects. Mean age at surgery was 5.6 months; mean body weight at surgery was 5.8 kg. No postoperative complications occurred. While there was no reduction in average volume of NG aspirates, color change was subjective, and bowel sounds could not be standardized, T-bil decreased over time (0d: 4.4 mg/dL; 0.5d: 2.7 mg/dL; 1.0d: 1.6 mg/dL; 1.5d: 1.3 mg/dL; 2.0d: 0.4 mg/dL; 2.5d: 0.33 mg/dL; 3.0d: 0.21 mg/dL; 3.5d: 0.15 mg/dL; 4.0d: 0.06 mg/dL; 4.5d: 0.05 mg/dL; 5.0d: 0.02 mg/dL; 5.5d: 0.02 mg/dL; 6.0d: 0.01 mg/dL. Amy and Na were inconclusive. Conclusion: T-bil levels in NG aspirates may be useful as a reliable objective quantitative marker of gastrointestinal motility postoperatively.

  13. Study on correlation among three kinds of bilirubin detection method%三种胆红素检测方法相关性研究

    Institute of Scientific and Technical Information of China (English)

    李守卫; 姚强

    2013-01-01

    目的 探讨三种胆红素检测方法的相关性.方法 选取生后7d内目测存在黄疸的住院新生儿50例,抽取血清标本用生化法测定血清总胆红素值,并同步以微量法和经皮法测定胆红素值,分别计算经皮胆红素值(TcB)与静脉血总胆红素值、末梢微量血胆红素值、静脉血总胆红素值之间的相关系数、检验其统计学意义.结果 末梢微量血胆红素检测法、经皮胆红素检测法分别与静脉血生化法均有很好的相关性(r=0.948、0.935,均P<0.01),并且末梢微量血胆红素检测法与静脉血生化法相关性更好.结论 采用微量血测定法检测胆红素值,不失为一种操作简便、结果可靠的方法.%Objective To explore which operation and the accuracy of the detection method is better by exploring the correlation among three bilirubin detection methods.Methods 50 hospitalized neonates within 7 days after birth with visual jaundice were randomly selected.The total serum bilirubin level was measured by the routine laboratory method.At the same time,the serum bilirubin level was measured by bilirubin analyzer for capillary blood and transcutaneous bilirubin(TcB) measurement,then calculated the linear correlation coefficient of TcB level and TSB level,capillary blood bilirubin level and TSB level respectively to analyze their statistical significance,and get the linear regression model at last.Results Close correlation is existed between the capillary blood bilirubin measurement and the routine laboratory method,also the transcutaneous bilirubin measurement and the routine laboratory method.Moreover,the former is better than the later.Conclusion Capillary blood bilirubin is reliable in measuring serum bilirubin level of newborns.

  14. Comparison of different methods in detection of neonatal bilirubin%不同方法对新生儿胆红素测定的比较

    Institute of Scientific and Technical Information of China (English)

    符宝铭; 韦蓉; 石明芳; 杨广林; 闫芳; 黄战; 周春浪; 欧珊

    2011-01-01

    Objective: To explore the differences of neonatal bilirubin detection with different methods, find a good method to monitor the dynamic changes of neonatal bilirubin. Methods; Three methods including automatic biochemical analyzer (biochemical method) , trace bilirubin analyzer (micromethod) and percutaneous bilirubin meter (percutaneous method) were used to detect the bilirubin levels of 90 neonates, then the differences were compared; micromethod and percutaneous method both were used to monitor the bilirubin levels of 392 normal full - term neonates at 1 ~7 days after birth dynamically, then the difference was compared. Results; There was no significant difference in measured value of bilirubin between micromethod and biochemical method ( P > 0. 05 ) ; when the level of bilirubin was less than 200 junol/L and within 201 -300 uJnol/L, there was no significant difference in measured value of bilirubin between percutaneous method and biochemical method (P >0.05); when the level of bilirubin was more than 300 jtmol/L, there was significant difference in measured value of bilirubin between percutaneous method and biochemical method (P < 0. 05) ; there was significant difference in measured value of bilirubin in neonates at 1 -7 days after birth between micromethod and percutaneous method (P <0. 05) . Conclusion; Micromethod is accurate and easy to operate in detection of neonatal bilirubin, which is superior to biochemical method and percutaneous method in dynamic monitoring of neonatal bilirubin.%目的:探讨不同方法对新生儿胆红素测定的差异,以寻找监测新生儿胆红素动态变化的好方法.方法:应用3种测定方法:全自动生化分析仪(生化法)、微量胆红素测定仪(微量法)、经皮测胆仪(经皮法)对90例新生儿进行胆红素测定并比较其差异,用微量法和经皮法同时对392例正常足月新生儿生后1~7天胆红素进行动态监测并比较其差异.结果:微量法胆红素测定值与生

  15. 关于胆红素升高的实验室检测与临床%Detection of bilirubin: from laboratory to clinical practice

    Institute of Scientific and Technical Information of China (English)

    王豪

    2012-01-01

    Jaundice (abnormal elevation of bilirubin) is common in clinical practice.At present bilirubin is detected by measuring total bilirubin (TB) and direct bilirubin (DB) in hospital.Indirect bilirubin (IB) is the difference of TB and DB.Direct bilirubin reflects mainly the conjugated bilirubin but they are not all equivalent.Indirect bilirubin and unconjugated bilirubin are the same condition.In clinical practice,the proportion of DB (or IB) in TB is more significant than their level of elevation.The cause of jaundice could be roughly determined by analyzing the proportion of DB (or IB) in TB.The methodology and quality of bilirubin detection are quite different in hospitals in our country.The proportion of DB aud IB in TB in detection of bilirubin is also quite different in hospitals.It leads to a big puzzle to the diagnosis and differential diagnosis of jaundice for clinical doctors.It is suggested that the quality control of bilirubin detection should be strengthened in laboratory in hospital.On the bases of strict quality control of bilirubin detection,proper adjustment of the proportion of DB and IB as to make it consistiug with clinical practice and pathogenesis of diseases,and making the proportion stable for long time are also suggested.%黄疸即胆红素异常升高在临床上很常见.目前医院检测胆红素通常测定血中的总胆红素和直接胆红素,而以总胆红素减去直接胆红素得到间接胆红素的数值.直接胆红素主要反映结合胆红素,但二者并不完全等同.与此类似,间接胆红素主要反映非结合胆红素.在临床上,对黄疸的诊断和鉴别诊断,直接胆红素(或间接胆红素)占总胆红素的比例较之胆红素升高的幅度更有意义.通过分析直接或间接胆红素的比例,往往可以对黄疸的原因做出大致的诊断和鉴别诊断.但目前各家医院检测胆红素的方法和水平差别较大,不同疾病状态下所测出的直接或间接胆红素的比

  16. PREDICTION OF SIGNIFICANT NEONATAL HYPERBILIRUBINAEMIA IN HEALTHY TERM NEW BORNS USING 22-26 HOURS’ SPECIFIC SERUM BILIRUBIN – A PROSPECTIVE STUDY

    Directory of Open Access Journals (Sweden)

    Reddy

    2016-03-01

    Full Text Available INTRODUCTION Hyperbilirubinemia invariably occurs in the newborns and is discerned as clinical jaundice in nearly 50% of infants. It is a cause of concern not only for the parents but also for the paediatricians. Bilirubin production is 2-3 times higher in normal term newborns compared with adults. The colour in jaundice usually results from accumulation of unconjugated, non-polar, lipid soluble, bilirubin pigment in the skin which is formed from haemoglobin by the action of heme oxygenase, biliverdin reductase and non-enzymatic reducing agents in the reticulo-endothelial cells. AIMS & OBJECTIVE To determine hour specific serum bilirubin (22-26 hrs which will predict, subsequent significant hyperbilirubinemia in healthy term newborns. MATERIALS & METHODS A total of 250 healthy full term newborns were enrolled into the study. First bilirubin estimation (TSB 1 was estimated at 22- 26 hrs. The neonates were followed up clinically every 12 hrs for 72 hrs (till discharge. Second bilirubin estimation (TSB S was done whenever clinical suspicion of jaundice was present (usually at 72 hours. Depending upon the TSB 1 value, the infants were evaluated by using two available protocols (Arbitrary cut off value of 5 mg/dl and average value of 4.06 mg%. Sensitivity, specificity, negative and positive predictive values and likelihood ratio of the test were calculated. P-value was used to determine the level of significance. RESULTS Of 250 neonates included in the study, 13 neonates developed hyperbilirubinemia and were subjected to phototherapy. No infants with average bilirubin value of ≤4.06 mg% developed subsequent hyperbilirubinemia. However, 2 infants with arbitrary cut off value of ≤5 mg/dl developed hyperbilirubinemia. There was significant difference in TSB I value of neonates who subsequently did and those who did not developed significant hyperbilirubinemia (P-value-<0.01. The negative predictive value to these two applied protocol is very high

  17. Evaluating the role of indirect bilirubin, urobilinogen and Shine AND Lal index as an alternative screening tool for beta thalassemia minor

    Directory of Open Access Journals (Sweden)

    Ridham A. Khanderia

    2015-06-01

    Methods: The present study was conducted on 100 (n=100 subjects in blood bank, department of pathology, government medical college Rajkot, Gujarat, India. In first group 50 subjects (Thalassemia minor were selected while in second group 50 (n2=50 normal individuals from hospital staff were selected. Complete-haemogram, serum-direct, indirect and total bilirubin, urine urobilinogen and their sensitivity and specificity were calculated. Results: Of the 50 cases in test group, 41 had higher Indirect Bilirubin level (>0.7 mg/dl, 35 had high urobilinogen level (>1 mg/dl. In control group out of 50 cases, 3 had high indirect bilirubin levels, 4 had high urobilinogen levels. Indirect-bilirubin had sensitivity of 82%, specificity of 94%. Urobilinogen showed sensitivity of 70% and specificity of 92%. Conclusion: Indirect bilirubin and urine-urobilinogen is a valuable, cost-effective screening test for beta-thalassemia-trait with sensitivity and specificity comparable to RBC indices. [Int J Res Med Sci 2015; 3(3.000: 730-737

  18. Bilirubin isomer distribution in jaundiced neonates during phototherapy with LED light centered at 497 nm (turquoise) vs. 459 nm (blue)

    DEFF Research Database (Denmark)

    Ebbesen, Finn; Madsen, Poul H; Vandborg, Pernille K;

    2016-01-01

    of jaundiced neonates after 24 h of therapy with narrow-band (LED) light centered at 497 nm (turquoise) vs. 459 nm (blue), of essentially equal irradiance. MATERIALS: Eighty-three neonates (≥33 wk gestational age) with uncomplicated hyperbilirubinemia were included in the study. Forty neonates were exposed...... to light centered at 497 nm and 43 infants with light centered at 459 nm. Irradiances were 5.2 × 10(15) and 5.1 × 10(15) photons/cm(2)/s, respectively. RESULTS: After 24 h of treatment no significant differences in serum concentrations of total bilirubin isomers and Z,Z-bilirubin were observed between...... the 2 groups. Interestingly, concentrations of Z,E-bilirubin, and thus also total bilirubin isomers formed during therapy, were highest for infants receiving light centered at 459 nm, while the concentration of E,Z-bilirubin was highest for those receiving light centered at 497 nm. No significant...

  19. The Relationship between the Behavioral Hearing Thresholds and Maximum Bilirubin Levels at Birth in Children with a History of Neonatal Hyperbilirubinemia

    Directory of Open Access Journals (Sweden)

    Rasool Panahi

    2013-06-01

    Full Text Available Introduction: Neonatal hyperbilirubinemia is one of the most important factors affecting the auditory system and can cause sensorineural hearing loss. This study investigated the relationship between behavioral hearing thresholds in children with a history of jaundice and the maximum level of bilirubin concentration in the blood.   Materials and Methods: This study was performed on 18 children with a mean age of 5.6 years and with a history of neonatal hyperbilirubinemia. Behavioral hearing thresholds, transient evoked emissions and brainstem evoked responses were evaluated in all children.   Results: Six children (33.3 % had normal hearing thresholds and the remaining (66.7 % had some degree of hearing loss. There was no significant relationship (r= -0.28, P= 0.09 between the mean total bilirubin levels and behavioral hearing thresholds in all samples. A transient evoked emission was seen only in children with normal hearing thresholds however in eight cases brainstem evoked responses had not detected.   Conclusion:  Increased blood levels of bilirubin at the neonatal period were potentially one of the causes of hearing loss. There was a lack of a direct relationship between neonatal bilirubin levels and the average hearing thresholds which emphasizes on the necessity of monitoring the various amounts of bilirubin levels.

  20. A COMPARISON STUDY: CORD SERUM ALBUMIN IS COMPARED WITH CORD SERUM BILIRUBIN AS A RISK INDICATOR IN PREDICTING NEONATAL JAUNDICE

    Directory of Open Access Journals (Sweden)

    Venkatamurthy

    2014-04-01

    Full Text Available : OBJECTIVE: 1. Comparing Cord Serum Albumin level (CSA with Cord Serum Bilirubin (CSB in predicting neonatal hyperbilirubinemia. 2. To know the sensitivity, specificity, Positive predictive value and negative predictive value of CSA and CSB in predicting neonatal jaundice in term neonates. METHOD: Prospective study was performed on 174 healthy term neonates. Relevant maternal history is collected. Cord blood was collected from the healthy term neonates at birth, CSA and CSB measured. Neonate was assessed clinically every day. Total Serum Bilirubin (TSB and blood group were assessed in neonate during 72-96 hours of life. TSB value ≥17mg/dl is considered Neonatal Hyperbilirubinemia (NH which requires intervention like phototherapy (PT or Exchange transfusion (ExT. RESULT: Study cohort is grouped in Group 1, Group 2 and Group 3 based on Cord Serum Albumin level ≤2.8g/dl, 2.9-3.3g/dl and ≥3.4g/dl, respectively. Based on CSB, study cohort divided into neonates with CSB ≤ 2mg/dl and CSB ≥ 2.1mg/dl. Statistical analysis done for correlation of CSA and CSB with NH. Statistical significance is seen for both CSA and CSB. CONCLUSION: Both CSA and CSB are equally effective in predicting NH at birth. These study variables can be considered as neonatal screening tool for NH for term neonates.

  1. A transcriptome analysis identifies molecular effectors of unconjugated bilirubin in human neuroblastoma SH-SY5Y cells

    Directory of Open Access Journals (Sweden)

    Giraudi Pablo

    2009-11-01

    Full Text Available Abstract Background The deposition of unconjugated bilirubin (UCB in selected regions of the brain results in irreversible neuronal damage, or Bilirubin Encephalopathy (BE. Although UCB impairs a large number of cellular functions in other tissues, the basic mechanisms of neurotoxicity have not yet been fully clarified. While cells can accumulate UCB by passive diffusion, cell protection may involve multiple mechanisms including the extrusion of the pigment as well as pro-survival homeostatic responses that are still unknown. Results Transcriptome changes induced by UCB exposure in SH-SY5Y neuroblastoma cell line were examined by high density oligonucleotide microarrays. Two-hundred and thirty genes were induced after 24 hours. A Gene Ontology (GO analysis showed that at least 50 genes were directly involved in the endoplasmic reticulum (ER stress response. Validation of selected ER stress genes is shown by quantitative RT-PCR. Analysis of XBP1 splicing and DDIT3/CHOP subcellular localization is presented. Conclusion These results show for the first time that UCB exposure induces ER stress response as major intracellular homeostasis in surviving neuroblastoma cells in vitro.

  2. Thymoquinone, an active constituent of Nigella sativa seeds, binds with bilirubin and protects mice from hyperbilirubinemia and cyclophosphamide-induced hepatotoxicity.

    Science.gov (United States)

    Laskar, Amaj A; Khan, Masood A; Rahmani, Arshad H; Fatima, Sana; Younus, Hina

    2016-08-01

    Some reports indicate that thymoquinone (TQ), the main constituent of Nigella sativa seeds, is hepatoprotective. The aim of this study was to determine whether TQ is able to bind directly to bilirubin, and whether TQ or liposomal formulation of TQ (Lip-TQ) can reduce cyclophosphamide (CYP)-induced liver toxicity, serum bilirubin level in mice. The binding of TQ with bilirubin was studied by UV-VIS, fluorescence and Near-UV CD spectroscopy. Inhibition of binding of bilirubin to erythrocytes by TQ was also examined. To increase the in vivo efficacy, Lip-TQ was prepared and used against CYP-induced toxicity. The protective role of TQ or Lip-TQ against CYP-induced toxicity was assessed by determining the liver function parameters, the levels of superoxide dismutase (SOD) and catalase (CAT), and histological studies. It was found that TQ binds to bilirubin and significantly inhibits the binding of bilirubin to erythrocytes. Lip-TQ (10 mg/kg) significantly reduced the levels of aspartate transaminase (AST) from 254 ± 48 to 66 ± 18 IU/L (P < 0.001), alanine transaminase (ALT) from 142 ± 28 to 47.8 ± 16 IU/L (P < 0.05) and serum bilirubin from 2.8 ± 0.50 to 1.24 ± 0.30 mg/dl (P < 0.05). Treatment with Lip-TQ reduced the CYP-induced inflammation and hemorrhage in liver tissues. Moreover, treatment with free or Lip-TQ protected the activity of SOD and CAT in CYP-injected mice. Therefore, TQ can reduce the level of bilirubin in systemic circulation in disease conditions that lead to hyperbilirubinemia and liver toxicity and hence may be used as a supplement in the treatment of liver ailments. PMID:27265787

  3. 非结合胆红素/白蛋白比值与脑干诱发电位相关性及对胆红素脑损伤预测价值%Correlation and predictive value between non conjugated bilirubin/albumin ratio and brain stem evoked potential in predicting bilirubin brain damage

    Institute of Scientific and Technical Information of China (English)

    扈志银; 郑小亮; 户振军

    2015-01-01

    目的:研究新生儿非结合胆红素/白蛋白比值与ABR相关性及对胆红素脑损伤的预测价值,为防治提供临床依据. 方法:以2013年1月至2014年12月在庆阳市妇幼保健院新生儿病房收住的113例足月高胆红素血症患儿为观察对象,检查血清总胆红素、非结合胆红素水平、计算总胆红素/白蛋白(B/A)、非结合胆红素/白蛋白(UCB/A)比值, ABR,并监测其伴随疾病. 结果:观察时间内,113例高胆红素血症的足月新生儿中合并胆红素脑病31例,无胆红素脑病患儿82例. 分析了B/A、UCB/A及ABR诊断胆红素脑病的灵敏度、特异性及Youden指数. 提示UCB/A及ABR作为诊断胆红素脑病的指标有一定价值. 结论:UCB/A值与ABR对胆红素脑损伤有诊断价值,可作为目前临床检测新生儿胆红素脑损伤的方法.%Objective:To study the predictive value of neonatal bilirubin/albumin ratio with ABR correlation to bilirubin brain damage in order to provide the clinical basis for the prevention and control. Methods:113 cases of full-term neonatal hyperbilirubinemia in Qingyang maternal and child care from Jan 2013 to Dec 2014 were checked levels of the serum total bilirubin and the combination of bilirubin, calculates ratio of total bilirubin/albumin(B/A) and the combination of bilirubin/albumin(UCB/A), ABR and its associated with disease. Results: In the observation period, there were 31 cases of bilirubin encephalopathy and no bilirubin encephalopathy of 82 cases. The sensitivity and specificity of B/A, UCB/A, ABR and Youden index in the diagnosis of neonatal hyperbilirubinemia were analyzed. Conclusion:UCB/A value and ABR have diagnostic value to the bilirubin brain damage, which can be used as a method to detect neonatal bilirubin brain injury at present.

  4. Adjusting CA19-9 values to predict malignancy in obstructive jaundice: Influence of bilirubin and C-reactive protein

    Institute of Scientific and Technical Information of China (English)

    Gaetano La Greca; Maria Sofia; Rosario Lombardo; Saverio Latteri; Agostino Ricotta; Stefano Puleo; Domenico Russello

    2012-01-01

    AIM:To find a possible relationship between inflammation and CA19-9 tumor marker by analyzing data from patients with benign jaundice (BJ) and malignant jaundice (MJ).METHODS:All patients admitted for obstructive jaundice,in the period 2005-2009,were prospectively enrolled in the study,obtaining a total of 102 patients.On admission,all patients underwent complete standard blood test examinations including C-reactive protein (CRP),bilirubin,CA19-9.Patients were considered eligible for the study when they presented obstructive jaundice confirmed by instrumental examinations and increased serum bilirubin levels (total bilirubin > 2.0 mg/dL).The standard cut-off level for CA19-9 was 32 U/mL,whereas for CRP this was 1.5 mg/L.The CA19-9 level was adjusted by dividing it by the value of serum bilirubin or by the CRP value.The patients were divided into 2 groups,MJ and BJ,and after the adjustment a comparison between the 2 groups of patients was performed.Sensitivity,specificity and positive predictive values were calculated before and after the adjustment.RESULTS:Of the 102 patients,51 were affected by BJ and 51 by MJ.Pathologic CA19-9 levels were found in 71.7% of the patients.In the group of 51 BJ patients there were 29 (56.9%) males and 22 (43.1%) females with a median age of 66 years (range 24-96 years),whereas in the MJ group there were 24 (47%) males and 27 (53%) females,with a mean age of 70 years (range 30-92 years).Pathologic CA19-9 serum level was found in 82.3% of MJ.CRP levels were pathologic in 66.6% of the patients with BJ and in 49% with MJ.Bilirubin and CA19-9 average levels were significantly higher in MJ compared with BJ (P =0.000 and P =0.02),while the CRP level was significantly higher in BJ (P =0.000).Considering a CA19-9 cut-off level of 32 U/mL,82.3% in the MJ group and 54.9% in the BJ group were positive for CA19-9 (P =0.002).A CA19-9 cut-off of 100 U/mL increases the difference between the two groups:35.3% in BJ and 68.6

  5. Increasing the catalytic activity of Bilirubin oxidase from Bacillus pumilus: Importance of host strain and chaperones proteins.

    Science.gov (United States)

    Gounel, Sébastien; Rouhana, Jad; Stines-Chaumeil, Claire; Cadet, Marine; Mano, Nicolas

    2016-07-20

    Aggregation of recombinant proteins into inclusion bodies (IBs) is the main problem of the expression of multicopper oxidase in Escherichia coli. It is usually attributed to inefficient folding of proteins due to the lack of copper and/or unavailability of chaperone proteins. The general strategies reported to overcome this issue have been focused on increasing the intracellular copper concentration. Here we report a complementary method to optimize the expression in E. coli of a promising Bilirubin oxidase (BOD) isolated from Bacillus pumilus. First, as this BOD has a disulfide bridge, we switched E.coli strain from BL21 (DE3) to Origami B (DE3), known to promote the formation of disulfide bridges in the bacterial cytoplasm. In a second step, we investigate the effect of co-expression of chaperone proteins on the protein production and specific activity. Our strategy allowed increasing the final amount of enzyme by 858% and its catalytic rate constant by 83%.

  6. Indicators of inflammation and cellular damage in chronic asymptomatic or oligosymptomatic alcoholics: correlation with alteration of bilirubin and hepatic and pancreatic enzymes

    Directory of Open Access Journals (Sweden)

    Borini Paulo

    1999-01-01

    Full Text Available Biochemical and hematimetric indicators of inflammation and cell damage were correlated with bilirubin and hepatic and pancreatic enzymes in 30 chronic male alcoholics admitted into psychiatric hospital for detoxification and treatment of alcoholism. Aspartate aminotransferase, alanine aminotransferase, gamma-glutamyltransferase, alkaline phosphatase, and total bilirubin were altered, respectively, in 90%, 63%, 87%, 23% and 23% of the cases. None of the indicators of inflammation (lactic dehydrogenase, altered in 16% of the cases; alpha-1 globulin, 24%; alpha-2 globulin, 88%; leucocyte counts, 28% was correlated with alterations of bilirubin or liver enzymes. Lactic dehydrogenase was poorly sensitive for detection of hepatocytic or muscular damage. Alterations of alpha-globulins seemed to have been due more to alcohol metabolism-induced increase of lipoproteins than to inflammation. Among indicators of cell damage, serum iron, increased in 40% of the cases, seemed to be related to liver damage while creatine phosphokinase, increased in 84% of the cases, related to muscle damage. Hyperamylasemia was found in 20% of the cases and significantly correlated with levels of bilirubin, alkaline phosphatase and gamma-glutamyltransferase. It was indicated that injuries of liver, pancreas, salivary glands, and muscle occurred in asymptomatic or oligosymptomatic chronic alcoholics.

  7. 新生儿胆红素脑病发病机制与临床评价%Pathogenesis and clinical evaluation of bilirubin encephalopathy in newborn infant

    Institute of Scientific and Technical Information of China (English)

    毛健

    2006-01-01

    @@ 新生儿时期严重的高胆红素血症,特别是生后1周内发生的严重高胆红素血症常易导致急性神经系统功能障碍,即急性胆红素脑病(Acute bilirubin encephalopathy,ABE).

  8. 用于清除胆红素的磁性亲和分离方法%Study on Removal of Bilirubin with Magnetic Affinity Separation Technique

    Institute of Scientific and Technical Information of China (English)

    徐辉; 张国亮; 张凤宝; 王淑兰

    2003-01-01

    An affinity adsorbent, Cibacron Blue 3GA immobilized magnetic polyvinyl alcohol (PVA) microsphereswas used for bilirubin removal taking the advantage of easy separation of magnetic sorbent from the biosystem.Fe3 O4 superparamagnetic particles was synthesized with hydrothermal reaction of ferrous chloride (FeCl2) and ferricchloride (FeCl3). Such magnetic particles are then encapsulated in biocompatible PVA to form magnetic polymermicrospheres sized from 2 to 15 nm with hydroxyl groups on its surface. Cibacron Blue 3GA, a dye-ligand, wascovalently coupled with the polyvinyl alcohol through the nucleophilic reaction between the chloride of its triazinering and the hydroxyl groups of PVA molecules under alkaline condition. The affinity adsorbent carried 21.1 μmolCibacron Blue 3GA per gram magnetic polymer microspheres was used to remove unconjugated and conjugatedbilirubin from the solution which was composed of bilirubin or bilirubin and protein. After the adsorption, theadsorbent loaded with bilirubin was removed easily in the magnetic field.

  9. Effect of preoperative biliary drainage on surgical results after pancreaticoduodenectomy in patients with distal common bile duct cancer:Focused on the rate of decrease in serum bilirubin

    Institute of Scientific and Technical Information of China (English)

    Yun Mee Choi; Seok-Hwan Shin; Kyung Rae Kim; Ze-Hong Woo; Eung-Ho Cho; Keon-Young Lee; Seung-Ik Ahn; Sun Keun Choi; Sei Joong Kim; Yoon Seok Hut; Young Up Cho; Kee-Chun Hang

    2008-01-01

    AIM:To examine if the rate of decrease in serum bilirubin after preoperative biliary drainagecan be used as a predicting factor for surgical complications and postoperative recovery after pancreaticoduodenectomy in patients with distal common bile duct cancer.METHODS:A retrospective study was performed in 49 consecutive patients who underwent pancreaticoduodenectomy for distal common bile duct cancer.Potential risk factors were compared between the complicated and uncomplicated groups.Also,the rates of decrease in serum bilirubin were compared pre-and postoperatively.RESULTS:Preoperative biliary drainage (PBD) was performed in 40 patients (81.6%).Postoperative morbidity and mortality rates were 46.9% (23/49) and 6.1% (3/49),respectively.The presence or absence of PBD was not different between the complicated and uncomplicated groups.In patients with PBD,neither the absolute level nor the rate of decrease in serum bilirubin was significantly different.Patients with rapid decrease preoperatively showed faster decrease during the first postoperative week (5.5±4.4 μmol/L vs-1.7±9.9μmol/L,P=0.004).CONCLUSION:PBD does not affect the surgical outcome of pancreaticoduodenectomy in patients with distal common bile duct cancer.There is a certain group of patients with a compromised hepatic excretory function,which is represented by the slow rate of decrease in serum bilirubin after PBD.

  10. 新生儿胆红素脑病脑脊液胆红素及脑干听觉诱发电位检测的临床意义%The clinical significance of cerebrospinal fluid bilirubin and brainstem auditory evoked potential tests in neonatal bilirubin encephalopathy

    Institute of Scientific and Technical Information of China (English)

    李先红; 张健; 查萍; 王丽丽; 孔萤; 孙璐路; 郑洪

    2014-01-01

    Objective To explore the clinical significance of cerebrospinal fluid bilirubin level and brainstem auditory evoked poten -tial in neonatal bilirubin encephalopathy .Methods All the cases with hyperbilirubinemia were selected from July 2011 to July 2013 in our department,and were divided into the bilirubin encephalopathy group (44 cases) and the non-bilirubin encephalopathy group (79 cases).Ce-rebrospinal fluid ,serum bilirubin level and brainstem auditory evoked potential ( BAEP ) changes were compared between the two groups of children .Results The cerebrospinal fluid bilirubin level in bilirubin encephalopathy group was higher than that of non -bilirubin encephalopa-thy group [(11.0 +3.9) tendency/L vs (7.4 +4.0) tendency/L],and the difference was statistically significant (P<0.01).The inci-dence of abnormal BAEP (61.4%) in bilirubin encephalopathy group was higher than that of non-bilirubin encephalopathy group (16.5%), and the difference was statistically significant (P<0.01).Conclusion Cerebrospinal fluid bilirubin can be used as a reliable indicator for bilirubin encephalopathy in the early diagnosis ,and newborn infants with bilirubin encephalopathy accompanied by higher incidence of hearing damage require early intervention treatment .%目的:探讨新生儿胆红素脑病脑脊液胆红素水平及脑干听觉诱发电位(BAEP)检查的临床意义。方法选取高胆红素血症新生儿为研究对象,分为胆红素脑病组(44例)和非胆红素脑病组(79例),比较两组患儿脑脊液、血清胆红素水平以及BAEP变化。结果胆红素脑病组患儿脑脊液胆红素水平高于非胆红素脑病组[(11.0±3.9) mol/L VS (7.4±4.0) mol/L],差异有统计学意义(P<0.05);胆红素脑病组BAEP异常发生率(61.4%)高于非胆红素脑病组(16.5%),差异有统计学意义(P<0.01)。结论脑脊液胆红素水平检测可作为新生儿胆红素脑病早期诊断的可

  11. 血清胆红素与代谢综合征的相关性研究%Relationship Between Serum Bilirubin and Metabolic Syndrome

    Institute of Scientific and Technical Information of China (English)

    韩硕; 张壬; 金元哲

    2015-01-01

    Objective] To explore the correlation between serum bilirubin and metabolic syndrome (MS) .[Methods] A total of 2 ,125 participants in our survey of atherosclerosis and related diseases were recruited to complete questionnaire ,physical examinations and laboratory tests .They were divided into metabolic syndrome (MS) and non‐metabolic syndrome (NMS) groups according to the International Diabetes Federation (IDF) diag‐nostic criteria for MS .And the correlations were analyzed for MS and serum total bilirubin ,direct bilirubin and in‐direct bilirubin .[Results] Their age range was 35~64 years .With an overall incidence rate of MS of 36 .1% ,it was higher in females than males (43 .5% vs 18 .4% ,P <0 .01) .Direct bilirubin was higher in MS group than that in NMS group [(2 .07 ± 0 .86) vs (2 .29 ± 0 .96)μmol/L ,P <0 .01] .With a rising number of MS composi‐tion factors ,bilirubin levels decreased .Among MS individuals ,serum total bilirubin and direct bilirubin levels were higher in males than those in females ( P<0 .05) .Logistic regression analysis showed that a low direct bili‐rubin level was more susceptible to MS .[Conclusion]Serum bilirubin may be associated with MS and direct biliru‐bin has greater correlations with MS .Individuals with lower serum direct bilirubin levels are more susceptible to MS .%【目的】研究血清胆红素与代谢综合征(MS)的相关性。【方法】对参与辽宁省沈阳市城区动脉硬化及其相关疾病调查的居民进行问卷调查、体格检查和实验室检查,依据国际糖尿病联盟诊断标准将其分为MS组及非代谢综合征(NMS)组。分析受试者血清总胆红素(TBIL)、直接胆红素(DBIL)及间接胆红素(IBIL)与MS的相关性。【结果】共纳入2125名35~64周岁居民,MS的总发生率为36.1%,女性高于男性(43.5%vs18.4%,P<0.01)。MS组DBIL浓度低于NMS组[(2.07±0.86)μmol/Lvs(2.29±0.96

  12. Relationship between serum bilirubin and diabetic kideny disease in patients with type 2 diabetes%2型糖尿病患者血清胆红素水平与糖尿病肾病关系的研究

    Institute of Scientific and Technical Information of China (English)

    陈宇; 周永华; 韩晓骏; 严冲; 苏如婷; 李小飞

    2011-01-01

    目的 探讨2型糖尿病(type 2 diabetes mellitus,T2DM)患者血清胆红素水平与糖尿病肾病(diabetickidney disease,DKD)之间的关系.方法 789例T2DM患者,按照24小时尿白蛋白定量分为正常尿白蛋白组(尿白蛋白300 mg),并以168例正常成人作为对照组,观察各组之间血清胆红素的差异,探讨血清胆红素水平与DKD的关系.结果 T2DM患者血清总胆红素、直接胆红素和间接胆红素水平均低于正常对照组(P0.05);临床尿白蛋白组的总胆红素、直接胆红素以及间接胆红素均低于其他两组(P0.05;r=-0.106,P0.05;r=0.12,P<0.05.结论 胆红素可能是T2DM患者肾脏的保护性因子.糖尿病早期采取积极的抗氧化治疗对防止DKD的发生发展有重要意义.%Objective To approach the relationship between serum bilirubin level and diabetic kideny disease in patients with type 2 diabetes mellitus(T2DM).Methods 789 T2DM patients were classified into normoalbuminuria group (urinary albumin excretion less than 30 mg per 24 h), microalbuminuria group (urinary albumin excretion range from 30 to 300 mg per 24 h) and macroalbuminuria group (urinary albumin excretion more than 300 mg per 24 h) according to the degree of urinary albumin excretion.We chose 168 healthy adults randomly as the control group.The difference in serum bilirubin among groups and the correlation between serum bilirubin and diabetic nephropathy were analyzed.Results T2DM group had higher levels of serum total bilirubin, direct bilirubin and unconjugated bilirubin significantly than those of the control group ( P <0.01 or P <0.05).The total bilirubin and unconjugated bilirubin levels of the microalbuminuria group were lower compared with those of the normoalbuminuria group ( P <0.01, P < 0.05), while there was no significant difference in the direct bilirubin (P >0.05).Compared with the other two groups, the macroalbuminuria group had lower serum total bilirubin, direct bilirubin as well as

  13. Influence of curcumin on cyclosporin-induced reduction of biliary bilirubin and cholesterol excretion and on biliary excretion of cyclosporin and its metabolites.

    Science.gov (United States)

    Deters, M; Siegers, C; Hänsel, W; Schneider, K P; Hennighausen, G

    2000-06-01

    We investigated the ability of curcumin, which can be extracted from different Curcuma species, to prevent cyclosporin-induced reduction of biliary bilirubin and cholesterol excretion, and its influence on biliary excretion of cyclosporin (CS) and its metabolites in the bile fistula model in rats. I.v. injection of curcumin (25 and 50 mg/kg) after 30 min increased dose-dependently basal bile flow (30 microliters/kg/min) up to 200%, biliary bilirubin excretion (3000 pmol/kg/min) up to 150%, and biliary cholesterol excretion (22 nmol/kg/min) up to 113%. CS (30 mg/kg) reduced bile flow to 66% and biliary excretion of bilirubin and of cholesterol to 33% of the basal value 30 min after i.v. injection. I.v. administration of curcumin (25 and 50 mg/kg) 30 min after CS increased bile flow dose dependently again to 130% for 1 hour and biliary excretion of cholesterol and of bilirubin to 100% of the basal value for 30 and 150 min, respectively. Injection of curcumin 15 min before CS prevented the CS-induced drop of bile flow at 50 mg/kg and reduction of biliary bilirubin excretion already at 25 mg/kg until the end of the experiment (180 min). The CS-induced reduction of biliary cholesterol excretion, however, was not prevented by curcumin. Finally, the biliary excretions of CS (1200 ng/kg/min) and its metabolites (1200 ng/kg/min) were slightly reduced by curcumin at a dose of 50 mg/kg (to 83% of the initial values). The clinical importance of these controversial effects remains to be shown.

  14. 胆红素对凝血功能检测结果的影响%Influence of bilirubin on the coagulation function test results

    Institute of Scientific and Technical Information of China (English)

    刘淑芹

    2015-01-01

    目的:探讨不同胆红素浓度对血浆凝血酶原时间(PT)和活化部分凝血活酶时间(APTT)检测结果的影响.方法:对含有不同总胆红素浓度的质控血浆进行血浆凝血酶原时间和活化部分凝血活酶时间指标测定,比较不同浓度的胆红素对上述指标的影响.结果:随着血浆总胆红素浓度的升高,PT、APTT检测结果升高,胆红素水平低于20 μmol/L时,对血浆PT、APTT测定结果影响的差异无统计学意义(P>0.05),当胆红素浓度高于41 μmol/L时,APTT检测结果显著高于对照血浆水平(P0.05).When the bilirubin concentration was more than 41 μmol/L,the APTT test result was significantly higher than the controlled plasma level(P<0.05).When the bilirubin concentration was more than 62 μ mol/L,the PT test result was significantly higher than the controlled plasma level(P<0.05).Conclusion:When the bilirubin level is less than 20 μ mol/L,the influence on the coagulation function test results is not big.However the plasma bilirubin concentration is significantly increased,it has distraction on the PT and APTT test results.When simply because of elevated bilirubin levels lead to PT, APTT results abnormal increase,it could be used the regression equation for correction to provide more accurate detection results in clinic.

  15. 新生儿胆红素脑病33例临床分析%A retrospective study of neonatal severe bilirubin encephalopathy in 33 newborns

    Institute of Scientific and Technical Information of China (English)

    徐瑞峰; 吴珠明; 高红霞; 易彬

    2011-01-01

    目的 探讨新生儿胆红素脑病的病因及临床特点.方法 选择2006年1月至2010年1月我院新生儿科收治的重症新生儿高胆红素血症患儿,分为胆红素脑病组(脑病组)与非胆红素脑病组(非脑病组),比较两组患儿病因、临床特征、胆红素水平、胆红素/白蛋白比值(B/A)以及治疗转归.结果 脑病组黄疸病因以溶血性因素占首位(48.5%),其次是感染因素(24.2%);非脑病组黄疸病因主要为溶血(69.7%).脑病组总胆红素、B/A比值、入院日龄和黄疸持续时间均大于非脑病组[( 555.2±113.9) μmol/L比(431.3±62.3)μmol/L,(0.87±0.17)比(0.67±0.11),(129.5±60.7)h比(53.0±22.6)h,(81.6±39.6)h比(34.2±15.8)h,P均<0.001].胆红素脑病警告期与痉挛期患儿入院日龄、血清胆红素及B/A比值差异无统计学意义(P>0.05).85%的胆红素脑病患儿预后不良.结论 溶血与感染是新生儿胆红素脑病的主要原因,总胆红素浓度过高和干预延迟是引起胆红素脑病的高危因素.%Objective To investigate the etiology and clinical features of neonatal bilirubin encephalopathy. Methods To select severe hyperbilirubinemia infant admitted in Gansu Provincial Maternity and Children's Hospital from January 2006 to January 2010, assigned into encephalopathy group and non-encephalopathy group, comparing their clinical characteristics, bilirubin level, bilirubin/ albumin ratio (B/A) and outcome. Results The main etiology of neonatal bilirubin encephalopathy is hemolytic (48. 5% ) , followed by infection (24. 2% ) ; but the etiology of non-encephalopathy is mainly for hemolysis, accounted for 69. 7%. Total bilirubin, B/A ratio, admission day and jaundice duration of Encephalopathy group are larger than them in non-encephalopathy group, the difference was statistically significant, (555. 2 ±113. 9) μmol/Lvs. (431. 3 ±62. 3) |xmol/L, (0.87 ±0.17) us. (0.67 ±0. 11) , (129.5 ±60.7) h ts. (53.0 ±22.6) h and (81.6 ±39.6) h

  16. 新生儿胆红素脑病脑脊液总胆红素及颅脑MRI检查的临床意义%Clinical Significance of Cerebrospinal Fluid Bilirubin and Craniocerebral Magnetic Resonance Imaging Measurements in Newborns with Bilirubin Encephalopathy

    Institute of Scientific and Technical Information of China (English)

    李先红; 张健; 郑洪; 孔萤; 孙路璐; 刘光辉

    2014-01-01

    Objective To explore the clinical significance of changes in cerebrospinal fluid bilirubin levels and craniocerebral magnetic resonance imaging (MRI)features in newborns with bilir-ubin encephalopathy. Methods Total bilirubin levels in serum and cerebrospinal fluid were determined using vanadate oxidation method with automatic biochemical analyzer in 44 newborns with bilirubin encephalopathy (bilirubin encephalopathy group)and 79 newborns without bilirubin enceph-alopathy (non-bilirubin encephalopathy group).In addition,craniocerebral MRI was performed in both groups. Results Total bilirubin levels in serum and cerebrospinal fluid in bilirubin encephalopathy group were significantly higher than those in non-bilirubin encephalopathy group (P<0.01).In bilirubin enceph-alopathy group,MRI showed symmetrical high signal intensity in the globus pallidus on T1WI in 33 newborns,abnormal signal in lateral side of posterior limb of internal capsule in the right basal ganglion region in 1 newborn,high signal intensity in the head of the right caudate nucleus on T1WI in 1 newborn, abnormal signal in the lateral ventricle in 3 newborns,abnormal signal in the bilateral frontal lobes in 1 newborn, short T1T2 signal in the torcular herophili in 1 newborn,and normal signal in 4 newborns. In non-bilirubin encephalopathy group,MRI showed symmetrical high signal intensity in the globus pallidus on T1WI in 3 newborns, abnormal signal in the right side of top occipital in 1 newborn, and normal signal in 75 newborns. The incidence of symmetrical high T1WI signal intensity in the globus pallidus in bilirubin encephalopathy group was significantly higher than that in non-bilirubin encephalopathy group (P<0.01).Conclusion Cerebrospinal fluid bilirubin can be used as a reliable indicator for the early diagnosis of bilirubin encephalopathy. The symmetrical high signal intensity in the globus pallidus on T1WI is the main feature of bilirubin encephalopathy in newborns. Regular fol-low-up and

  17. INVESTIGATION ON ASSOCIATION OF SERUM BILIRUBIN CONCENTRATION WITH RISK OF CORONARY HEART DISEASE%血清胆红素与冠心病的关系探讨

    Institute of Scientific and Technical Information of China (English)

    张书亚; 陈红涛

    2001-01-01

    Objective  To investigate the relationship between of serum bilirubin concentrations and risk of coronary heart drsease (CHD). Methods  Serum bilirubin concentrations were determined in 12 cases with acute myocardial infarction(AMI)、37 cases with unstable angina pectoris (UAP) and 30 cases with UAP with arrhythmia. Results  The serum total bilirubin(TB)、direct bilirubin(DB)、indirect bilirubin(IB) concentrations were lower in the three study groups of CHD than in the controls. There was significant difference between the patients with CHD and the controls. However, there was no significant difference among the three study groups of CHD. Conclusion  Serum bilirubin concentrations was inversely and statistically significantly related to risk of CHD.%目的探讨血清胆红素浓度与冠心病(CHD)发生的危险性之间的关系。方法观察79例CHD患者血清胆红素浓度,再据冠心病分型将其分为急性心肌梗死(AMI)组12例,不稳定型心绞痛(UAP)组37例,不稳定型心绞痛并心律失常组30例。同时观察30例健康体检组血清胆红素浓度。结果冠心病组及不同类型冠心病组血清总胆红素、直接胆红素、间接胆红素浓度均降低,与健康对照组比较均有显著性差异,而不同类型冠心病组间比较差异无显著性。结论血清胆红素浓度与冠心病发生的危险性之间呈显著的负相关。

  18. Research Update: Facile synthesis of CoFe2O4 nano-hollow spheres for efficient bilirubin adsorption

    Directory of Open Access Journals (Sweden)

    Rupali Rakshit

    2015-11-01

    Full Text Available Herein, we report an unprecedented bilirubin (BR adsorption efficiency of CoFe2O4 (CFO nanostructures in contrast to the commercially available activated carbon and resin which are generally used for haemoperfusion and haemodialysis. We have synthesized CFO nanoparticles of diameter 100 nm and a series of nano-hollow spheres of diameter 100, 160, 250, and 350 nm using a simple template free solvothermal technique through proper variation of reaction time and capping agent, oleylamine (OLA, respectively, and carried out SiO2 coating by employing Stöber method. The comparative BR adsorption study of CFO and SiO2 coated CFO nanostructures indicates that apart from porosity and hollow configuration of nanostructures, the electrostatic affinity between anionic carboxyl group of BR and cationic amine group of OLA plays a significant role in adsorbing BR. Finally, we demonstrate that the BR adsorption capacity of the nanostructures can be tailored by varying the morphology as well as size of the nanostructures. We believe that our developed magnetic nanostructures could be considered as a potential material towards therapeutic applications against hyperbilirubinemia.

  19. Evaluation of treatment thresholds for unconjugated hyperbilirubinemia in preterm infants: effects on serum bilirubin and on hearing loss?

    Directory of Open Access Journals (Sweden)

    Christian V Hulzebos

    Full Text Available BACKGROUND: Severe unconjugated hyperbilirubinemia may cause deafness. In the Netherlands, 25% lower total serum bilirubin (TSB treatment thresholds were recently implemented for preterm infants. OBJECTIVE: To determine the rate of hearing loss in jaundiced preterms treated at high or at low TSB thresholds. DESIGN/METHODS: In this retrospective study conducted at two neonatal intensive care units in the Netherlands, we included preterms (gestational age 35 dB. RESULTS: There were 479 patients in the high and 144 in the low threshold group. Both groups had similar gestational ages (29.5 weeks and birth weights (1300 g. Mean and mean peak TSB levels were significantly lower after the implementation of the novel thresholds: 152 ± 43 µmol/L and 212 ± 52 µmol/L versus 131 ± 37 µmol/L and 188 ± 46 µmol/L for the high versus low thresholds, respectively (P<0.001. The incidence of hearing loss was 2.7% (13/479 in the high and 0.7% (1/144 in the low TSB threshold group (NNT = 50, 95% CI, 25-3302. CONCLUSIONS: Implementation of lower treatment thresholds resulted in reduced mean and peak TSB levels. The incidence of hearing impairment in preterms with a gestational age <32 weeks treated at low TSB thresholds was substantially lower compared to preterms treated at high TSB thresholds. Further research with larger sample sizes and power is needed to determine if this effect is statistically significant.

  20. Study of Model Systems for Bilirubin and Bilin Chromophores: Determination and Modification of Thermal and Photochemical Properties.

    Science.gov (United States)

    García-Iriepa, Cristina; Ernst, Hanna A; Liang, Yu; Unterreiner, Andreas-Neil; Frutos, Luis Manuel; Sampedro, Diego

    2016-08-01

    Bilin chromophores and bilirubin are involved in relevant biological functions such as light perception in plants and as protective agents against Alzheimer and other diseases. Despite their extensive use, a deep rationalization of the main factors controlling the thermal and photochemical properties has not been performed yet, which in turn hampers further applications of these versatile molecules. In an effort to understand those factors and allow control of the relevant properties, a combined experimental and computational study has been carried out for diverse model systems to understand the interconversion between Z and E isomers. In this study, we have demonstrated the crucial role of steric hindrance and hydrogen-bond interactions in thermal stability and the ability to control them by designing novel compounds. We also determined several photochemical properties and studied the photodynamics of two model systems in more detail, observing a fast relaxation of the excited state shorter than 2 ps in both cases. Finally, the computational study allowed us to rationalize the experimental evidence. PMID:27391671

  1. Modulation of defect-mediated energy transfer from ZnO nanoparticles for the photocatalytic degradation of bilirubin

    Directory of Open Access Journals (Sweden)

    Tanujjal Bora

    2013-11-01

    Full Text Available In recent years, nanotechnology has gained significant interest for applications in the medical field. In this regard, a utilization of the ZnO nanoparticles for the efficient degradation of bilirubin (BR through photocatalysis was explored. BR is a water insoluble byproduct of the heme catabolism that can cause jaundice when its excretion is impaired. The photocatalytic degradation of BR activated by ZnO nanoparticles through a non-radiative energy transfer pathway can be influenced by the surface defect-states (mainly the oxygen vacancies of the catalyst nanoparticles. These were modulated by applying a simple annealing in an oxygen-rich atmosphere. The mechanism of the energy transfer process between the ZnO nanoparticles and the BR molecules adsorbed at the surface was studied by using steady-state and picosecond-resolved fluorescence spectroscopy. A correlation of photocatalytic degradation and time-correlated single photon counting studies revealed that the defect-engineered ZnO nanoparticles that were obtained through post-annealing treatments led to an efficient decomposition of BR molecules that was enabled by Förster resonance energy transfer.

  2. Phenobarbital and Phototherapy Combination Enhances Decline of Total Serum Bilirubin and May Decrease the Need for Blood Exchange Transfusion in Newborns with Isoimmune Hemolytic Disease

    OpenAIRE

    Mahmoud A.F. Kaabneh; Ghassan S. A. Salama; Ayoub G.A Shakkoury; Ibrahim M. H. Al-abdallah; Afrah Alshamari; Ruba A.A. Halaseh

    2015-01-01

    OBJECTIVE The objective of this study was to evaluate the effect of phenobarbital and phototherapy combination on the total serum bilirubin of the newborn infants with isoimmune hemolytic disease (IHD) and its impact on blood exchange transfusion rates. PATIENTS AND METHOD This single-blinded, prospective, randomized, controlled trial was conducted between March 2013 and December 2014 at the pediatric ward of two Military Hospitals in Jordan. A total of 200 full-term neonates with IHD were di...

  3. 新生儿胆红素脑病43例临床分析%Clinical Analysis of 43 Cases With Neonatal Bilirubin Encephalopathy

    Institute of Scientific and Technical Information of China (English)

    刘向红; 郎玉洁

    2015-01-01

    目的:了解胆红素脑病的病因及后遗症的发生情况,重视胆红素脑病的早期诊断、早期干预。方法43例胆红素脑病患儿进行病因、辅助检查、治疗、转归及随访结果进行分析研究。结果胆红素脑病的病因主要为感染占46.5%(23/43),出血占34.9%(15/43)和溶血占18.6%(8/43),后遗症的发生率为40.6%。结论应早期就诊,针对病因综合积极治疗,可减少智力落后、脑瘫等后遗症的发生。%Objective To investigate the etiology and the sequelae of bilirubin encephalopathy,pay attention to early diagnosis and early intervention of neonatal bilirubin encephalopathy.Methods 43 cases of bilirubin encephalopathy etiology,auxiliary examination,treatment,prognosis and folow-up results were analyzed.ResultsThe causes of bilirubin encephalopathy were mainly infection accounted for 46.5%(23/43),hemorrhage accounted for 34.9%(15/43)and hemolysis accounted for 18.6%(8/43),the incidence of sequelae rate was 40.6%.Conclusion Early treatment,comprehensive treatment for the cause,and can reduce mental retardation,cerebral palsy sequela.

  4. Development and validation of serum bilirubin nomogram to predict the absence of risk for severe hyperbilirubinaemia before discharge: a prospective, multicenter study

    OpenAIRE

    Romagnoli Costantino; Tiberi Eloisa; Barone Giovanni; De Curtis Mario; Regoli Daniela; Paolillo Piermichele; Picone Simonetta; Anania Stefano; Finocchi Maurizio; Cardiello Valentina; Giordano Lucia; Paolucci Valentina; Zecca Enrico

    2012-01-01

    Abstract Background Early discharge of healthy late preterm and full term newborn infants has become common practice because of the current social and economic necessities. Severe jaundice, and even kernicterus, has developed in some term infants discharged early. This study was designed to elaborate a percentile-based hour specific total serum bilirubin (TSB) nomogram and to assess its ability to predict the absence of risk for subsequent non physiologic severe hyperbilirubinaemia before dis...

  5. Validation of transcutaneous bilirubin nomogram for identifying neonatal hyperbilirubinemia in healthy Chinese term and late-preterm infants: a multicenter study

    OpenAIRE

    Zhangbin Yu; Shuping Han; Jinxia Wu; Mingxia Li; Huaiyan Wang; Jimei Wang; Jiebo Liu; Xinnian Pan; Jie Yang; Chao Chen

    2014-01-01

    OBJECTIVE: to prospectively validate a previously constructed transcutaneous bilirubin (TcB) nomogram for identifying severe hyperbilirubinemia in healthy Chinese term and late-preterm infants. METHODS: this was a multicenter study that included 9,174 healthy term and late-preterm infants in eight hospitals of China. TcB measurements were performed using a JM-103 bilirubinometer. TcB values were plotted on a previously developed TcB nomogram, to identify the predictive ability for subseq...

  6. 原发性肝癌切除术后高胆红素血症临床分析%Clinical investigation on postoperative high serum bilirubin in patients with primary liver cancer after resection

    Institute of Scientific and Technical Information of China (English)

    黄涛; 周进学; 杨楠木; 宫东伟

    2011-01-01

    目的 探讨原发性肝癌切除术后胆红素变化的规律及导致高胆红素血症的临床因素.方法 回顾性分析97例原发性肝癌切除术患者临床资料,根据术后血清总胆红素水平分为高胆红素组和胆红素正常组,观察术后胆红素变化特点,分析导致术后高胆红素血症的临床因素.结果 红素正常组术后血清总胆红素4 d达峰值[(21.5±9.2)μmol/L],术后14 d可降至正常水平;高胆红素血症组血清总胆红素7 d达峰值[(49.2±25.4)μmol/L],术后14 d仍高于正常值2倍[(36.1 ±17.6)μmol/L].单因素Logistic分析显示:术前胆红素水平,肝功能Child分级,术中肝血流阻断方式,出血量,输血情况以及术后合并低钠血症与术后高胆红素血症有关;多因素Logistic回归分析结果 表明术前胆红素水平是原发性肝癌切除术后高胆红素血症独立预测指标(OR=5.406,χ2=11.319,P=0.001).结论 原发性肝癌切除术后动态监测血清胆红素水平是重要的.围手术期对发生商胆红素血症的相关临床因素积极防范并处理,可降低肝癌切除术后并发症发生率.%Objective To investigate the features of postoperative serum bilirubin changes and the clinical factors associated with high serum bilirubin level in patients with primary liver cancer after resection. Methods The clinical data of 97 patients with primary liver cancer who underwent hepatectomy were analysed retrospectively. The cases were divided into two groups: high serum bilirubin group and normal bilirubin group, respectively, according to serum bilirubin level during two weeks after operation. The features of postoperative serum bilirubin changes and the causitive factors of postoperative high serum bilirubin were analyzed. Results The postoperative serum bilirubin reached the peak value [ (21. 5 ± 9.2 )μmol/L ] on d4, and then decreased to normal on d 14 in normal bilirubin group. But in high serum bilirubin group the postoperative serum

  7. Acute effect of weight loss on levels of total bilirubin in obese, cardiovascular high-risk patients: an analysis from the lead-in period of the Sibutramine Cardiovascular Outcome trial

    DEFF Research Database (Denmark)

    Andersson, Charlotte; Weeke, Peter; Fosbøl, Emil Loldrup;

    2009-01-01

    Low levels of bilirubin are associated with an increased risk of cardiovascular adverse events. Weight reduction is known to reduce several cardiovascular risk factors, but effects on bilirubin levels have not been reported. We studied the response of weight loss therapy with sibutramine...... and lifestyle change on levels of total bilirubin in an overweight or obese, cardiovascular high-risk population. Data from the first 4 weeks of the lead-in period of the Sibutramine Cardiovascular Outcome study were analyzed. A total of 10 198 patients provided body weight measurements before and after 4 weeks......, respectively. At screening, bilirubin concentrations were similar between weight loss groups (around 11 micromol/L, P = .7) and increased linearly as a function of weight loss. The effect was significantly more pronounced in men compared with women (P for interaction = .003). Adjusted for multiple variables...

  8. A needle extraction utilizing a molecularly imprinted-sol-gel xerogel for on-line microextraction of the lung cancer biomarker bilirubin from plasma and urine samples.

    Science.gov (United States)

    Moein, Mohammad Mahdi; Jabbar, Dunia; Colmsjö, Anders; Abdel-Rehim, Mohamed

    2014-10-31

    In the present work, a needle trap utilizing a molecularly imprinted sol-gel xerogel was prepared for the on-line microextraction of bilirubin from plasma and urine samples. Each prepared needle could be used for approximately one hundred extractions before it was discarded. Imprinted and non-imprinted sol-gel xerogel were applied for the extraction of bilirubin from plasma and urine samples. The produced molecularly imprinted sol-gel xerogel polymer showed high binding capacity and fast adsorption/desorption kinetics for bilirubin in plasma and urine samples. The adsorption capacity of molecularly imprinted sol-gel xerogel polymer was approximately 60% higher than that of non-imprinted polymer. The effect of the conditioning, washing and elution solvents, pH, extraction time, adsorption capacity and imprinting factor were investigated. The limit of detection and the lower limit of quantification were set to 1.6 and 5nmolL(-1), respectively using plasma or urine samples. The standard calibration curves were obtained within the concentration range of 5-1000nmolL(-1) in both plasma and urine samples. The coefficients of determination values (R(2)) were ≥0.998 for all runs. The extraction recovery was approximately 80% for BR in the human plasma and urine samples.

  9. Functional induction of the cystine-glutamate exchanger system Xc(- activity in SH-SY5Y cells by unconjugated bilirubin.

    Directory of Open Access Journals (Sweden)

    Pablo J Giraudi

    Full Text Available We have previously reported that exposure of SH-SY5Y neuroblastoma cells to unconjugated bilirubin (UCB resulted in a marked up-regulation of the mRNA encoding for the Na(+-independent cystine∶glutamate exchanger System X(c(- (SLC7A11 and SLC3A2 genes. In this study we demonstrate that SH-SY5Y cells treated with UCB showed a higher cystine uptake due to a significant and specific increase in the activity of System X(c(-, without the contribution of the others two cystine transporters (X(AG(- and GGT reported in neurons. The total intracellular glutathione content was 2 folds higher in the cells exposed to bilirubin as compared to controls, suggesting that the internalized cystine is used for gluthathione synthesis. Interestingly, these cells were significantly less sensitive to an oxidative insult induced by hydrogen peroxide. If System X(c(- is silenced the protection is lost. In conclusion, these results suggest that bilirubin can modulate the gluthathione levels in neuroblastoma cells through the induction of the System X(c(-, and this renders the cell less prone to oxidative damage.

  10. Research on Fetal Bilirubin Metabolism and the Relationship Between It and Fetal Outcome%胎儿胆红素代谢及其与胎儿结局的关系

    Institute of Scientific and Technical Information of China (English)

    王晓璐

    2011-01-01

    胆红素代谢对人体有重要作用,游离型胆红素可自由穿过脂膜和血脑屏障等,产生细胞毒性而引发新生儿核黄疸.胎儿胆红素代谢与成人不同,胎儿期肝脏尚未发育成熟,其体内只有少量胆红素可经肝脏转化为无毒的结合型胆红素,大部分是非结合型胆红素以胆红素-白蛋白复合物的形式溶于血浆中,通过胎盘上的胆红素转运载体运送至母体代谢.当胎儿体内胆红素浓度过高或白蛋白浓度降低等病理情况下,胆红素可从白蛋白结合位点上解离成为游离型胆红素,其可对胎儿产生神经毒性作用,造成胎儿不良结局.%Bilirubin metabolism plays an important role for the human,free bilirubin can pass through cell membranes, blood-brain barrier and lipid membranes freely, resulting in cell toxicity and neonatal kernicterus.Fetal bilirubin metabolism is different from the adults'. Because of the immaturity of fetal liver function, only a small amount of fetal bilirubin can be transformed into non-toxic conjugated bilirubin via fetal liver, while most of the unconjugated bilirubin dissolved in the plasma in the form of bilirubin-albumin complex is transferred to mother to be metabolized by bilirubin carriers in the placenta. In certain pathological conditions, such as high concentration of bilirubin or low concentration of albumin, bilirubin-albumin complex may be dissociated from albumin binding sites to free bilirubin, which can result in neurotoxic effects on fetus, causing fetal adverse outcomes.

  11. 新生儿经皮胆红素与血清胆红素测定影响因素及高胆红素血症感染的临床分析%Factors influencing determination of neonatal transcutaneous bilirubin and serum bilirubin and clinical analysis of hyperbilirubinemia

    Institute of Scientific and Technical Information of China (English)

    金霆; 费政芳; 严争

    2013-01-01

    OBJECTIVE To explore the related factors influencing the determination of the neonatal transcutaneous bilirubin and serum bilirubin and to analyze the causes of the neonatal infection hyperbilirubinemia. METHODS The transcutaneous bilirubin value in 250 children with hyperbilirubinemia and the bilirubin value of the bypass peripheral blood and serum bilirubin value were compared and analyzed, then the predisposing factors were analyzed. RESULTS The determination values of the transcutaneous bilirubin, peripheral blood bilirubin, and total serum bilirubin were(145.6±23. 5)mol/L, (148.3±20. l)mol/L, and (155. 2±15. 2) μmol/L, respectively, the differences were statistically significant(P<0. 001 ). There were 107 (42. 8%) cases of neonates who caught the neonatal hyperbilirubinemia primarily due to the perinatal factors, 81 (32. 4%) cases due to the infection factors. The infection factors mainly consisted of omphalitis, impetigo, septicemia, pneumonia, purulent meningitis, toxoplas-mosis infection, giant CMV infection, and congenital syphilis. CONCLUSION The determination of transcutaneous bilirubin is highly correlated with the level of serum bilirubin. The infection factors take a secondary place to cause the hyperbilirubinemia, the treatment should be conducted according to the specific cause by taking different treatment programs.%目的 探讨新生儿经皮胆红素与血清胆红素测定的影响因素及高胆红素血症感染因素的临床分析.方法 对发生胆红素血症250例患儿经皮胆红素值与经末梢血和血清测定的总胆红素值进行对照,同时对患儿的发病因素进行分析.结果 婴儿经皮胆红素与末梢血胆红素以及血清总胆红素测定值分别为(145.6±23.5)、(148.3±20.1)、(155.2±15.2)μmol/L,差异有统计学意义(P<0.01);导致新生儿高胆红素血症的最主要因素为围产因素107例,占42.8%,感染因素81例,占32.4%,感染因素主要包括脐炎、脓疱疹、败血症

  12. Bilirubin UDP-Glucuronosyltransferase 1A1 (UGT1A1) Gene Promoter Polymorphisms and HPRT, Glycophorin A, and Micronuclei Mutant Frequencies in Human Blood

    Energy Technology Data Exchange (ETDEWEB)

    Grant, D; Hall, I J; Eastmond, D; Jones, I M; Bell, D A

    2004-10-06

    A dinucleotide repeat polymorphism (5-, 6-, 7-, or 8-TA units) has been identified within the promoter region of UDP-glucuronosyltransferase 1A1 gene (UGT1A1). The 7-TA repeat allele has been associated with elevated serum bilirubin levels that cause a mild hyperbilirubinemia (Gilbert's syndrome). Studies suggest that promoter transcriptional activity of UGT1A1 is inversely related to the number of TA repeats and that unconjugated bilirubin concentration increases directly with the number of TA repeat elements. Because bilirubin is a known antioxidant, we hypothesized that UGT1A1 repeats associated with higher bilirubin may be protective against oxidative damage. We examined the effect of UGT1A1 genotype on somatic mutant frequency in the hypoxanthine-guanine phosphoribosyl-transferase (HPRT) gene in human lymphocytes and the glycophorin A (GPA) gene of red blood cells (both N0, NN mutants), and the frequency of lymphocyte micronuclei (both kinetochore (K) positive or micronuclei K negative) in 101 healthy smoking and nonsmoking individuals. As hypothesized, genotypes containing 7-TA and 8-TA displayed marginally lower GPA{_}NN mutant frequency relative to 5/5, 5/6, 6/6 genotypes (p<0.05). In contrast, our analysis showed that lower expressing UGT1A1 alleles (7-TA and 8-TA) were associated with modestly increased HPRT mutation frequency (p<0.05) while the same low expression genotypes were not significantly associated with micronuclei frequencies (K-positive or K-negative) when compared to high expression genotypes (5-TA and 6-TA). We found weak evidence that UGT1A1 genotypes containing 7-TA and 8-TA were associated with increased GPA{_}N0 mutant frequency relative to 5/5, 5/6, 6/6 genotypes (p<0.05). These data suggest that UGT1A1 genotype may modulate somatic mutation of some types, in some cell lineages, by a mechanism not involving bilirubin antioxidant activity. More detailed studies examining UGT1A1 promoter variation, oxidant/antioxidant balance and

  13. Influence of Phosphatidylcholine and Calcium on Self-Association and Bile Salt Mixed Micellar Binding of the Natural Bile Pigment, Bilirubin Ditaurate.

    Science.gov (United States)

    Neubrand, Michael W; Carey, Martin C; Laue, Thomas M

    2015-11-17

    Recently [Neubrand, M. W., et al. (2015) Biochemistry 54, 1542-1557], we determined a concentration-dependent monomer-dimer-tetramer equilibrium in aqueous bilirubin ditaurate (BDT) solutions and explored the nature of high-affinity binding of BDT monomers with monomers and micelles of the common taurine-conjugated bile salts (BS). We now investigate, employing complementary physicochemical methods, including fluorescence emission spectrophotometry and quasi-elastic light scattering spectroscopy, the influence of phosphatidylcholine (PC), the predominant phospholipid of bile and calcium, the major divalent biliary cation, on these self-interactions and heterointeractions. We have used short-chain, lyso and long-chain PC species as models and contrasted our results with those of parallel studies employing unconjugated bilirubin (UCB) as the fully charged dianion. Both bile pigments interacted with the zwitterionic headgroup of short-chain lecithins, forming water-soluble (BDT) and insoluble ion-pair complexes (UCB), respectively. Upon micelle formation, BDT monomers apparently remained at the headgroup mantle of short-chain PCs, but the ion pairs with UCB became internalized within the micelle's hydrophobic core. BDT interacted with the headgroups of unilamellar egg yolk (EY) PC vesicles; however, with the simultaneous addition of CaCl2, a reversible aggregation took place, but not vesicle fusion. With mixed EYPC/BS micelles, BDT became bound to the hydrophilic surface (as with simple BS micelles), and in turn, both BDT and BS bound calcium, but not other divalent cations. The calcium complexation of BDT and BS was enhanced strongly with increases in micellar EYPC, suggesting calcium-mediated cross-bridging of hydrophilic headgroups at the micelle's surface. Therefore, the physicochemical binding of BDT to BS in an artificial bile medium is influenced not only by BS species and concentration but also by long-chain PCs and calcium ions that exert a specific rather

  14. Influence of Phosphatidylcholine and Calcium on Self-Association and Bile Salt Mixed Micellar Binding of the Natural Bile Pigment, Bilirubin Ditaurate.

    Science.gov (United States)

    Neubrand, Michael W; Carey, Martin C; Laue, Thomas M

    2015-11-17

    Recently [Neubrand, M. W., et al. (2015) Biochemistry 54, 1542-1557], we determined a concentration-dependent monomer-dimer-tetramer equilibrium in aqueous bilirubin ditaurate (BDT) solutions and explored the nature of high-affinity binding of BDT monomers with monomers and micelles of the common taurine-conjugated bile salts (BS). We now investigate, employing complementary physicochemical methods, including fluorescence emission spectrophotometry and quasi-elastic light scattering spectroscopy, the influence of phosphatidylcholine (PC), the predominant phospholipid of bile and calcium, the major divalent biliary cation, on these self-interactions and heterointeractions. We have used short-chain, lyso and long-chain PC species as models and contrasted our results with those of parallel studies employing unconjugated bilirubin (UCB) as the fully charged dianion. Both bile pigments interacted with the zwitterionic headgroup of short-chain lecithins, forming water-soluble (BDT) and insoluble ion-pair complexes (UCB), respectively. Upon micelle formation, BDT monomers apparently remained at the headgroup mantle of short-chain PCs, but the ion pairs with UCB became internalized within the micelle's hydrophobic core. BDT interacted with the headgroups of unilamellar egg yolk (EY) PC vesicles; however, with the simultaneous addition of CaCl2, a reversible aggregation took place, but not vesicle fusion. With mixed EYPC/BS micelles, BDT became bound to the hydrophilic surface (as with simple BS micelles), and in turn, both BDT and BS bound calcium, but not other divalent cations. The calcium complexation of BDT and BS was enhanced strongly with increases in micellar EYPC, suggesting calcium-mediated cross-bridging of hydrophilic headgroups at the micelle's surface. Therefore, the physicochemical binding of BDT to BS in an artificial bile medium is influenced not only by BS species and concentration but also by long-chain PCs and calcium ions that exert a specific rather

  15. Exposure to lipopolysaccharide and/or unconjugated bilirubin impair the integrity and function of brain microvascular endothelial cells.

    Directory of Open Access Journals (Sweden)

    Filipa L Cardoso

    Full Text Available BACKGROUND: Sepsis and jaundice are common conditions in newborns that can lead to brain damage. Though lipopolysaccharide (LPS is known to alter the integrity of the blood-brain barrier (BBB, little is known on the effects of unconjugated bilirubin (UCB and even less on the joint effects of UCB and LPS on brain microvascular endothelial cells (BMEC. METHODOLOGY/PRINCIPAL FINDINGS: Monolayers of primary rat BMEC were treated with 1 µg/ml LPS and/or 50 µM UCB, in the presence of 100 µM human serum albumin, for 4 or 24 h. Co-cultures of BMEC with astroglial cells, a more complex BBB model, were used in selected experiments. LPS led to apoptosis and UCB induced both apoptotic and necrotic-like cell death. LPS and UCB led to inhibition of P-glycoprotein and activation of matrix metalloproteinases-2 and -9 in mono-cultures. Transmission electron microscopy evidenced apoptotic bodies, as well as damaged mitochondria and rough endoplasmic reticulum in BMEC by either insult. Shorter cell contacts and increased caveolae-like invaginations were noticeable in LPS-treated cells and loss of intercellular junctions was observed upon treatment with UCB. Both compounds triggered impairment of endothelial permeability and transendothelial electrical resistance both in mono- and co-cultures. The functional changes were confirmed by alterations in immunostaining for junctional proteins β-catenin, ZO-1 and claudin-5. Enlargement of intercellular spaces, and redistribution of junctional proteins were found in BMEC after exposure to LPS and UCB. CONCLUSIONS: LPS and/or UCB exert direct toxic effects on BMEC, with distinct temporal profiles and mechanisms of action. Therefore, the impairment of brain endothelial integrity upon exposure to these neurotoxins may favor their access to the brain, thus increasing the risk of injury and requiring adequate clinical management of sepsis and jaundice in the neonatal period.

  16. Anti-cancer effects of blue-green alga Spirulina platensis, a natural source of bilirubin-like tetrapyrrolic compounds.

    Science.gov (United States)

    Koníčková, Renata; Vaňková, Kateřina; Vaníková, Jana; Váňová, Kateřina; Muchová, Lucie; Subhanová, Iva; Zadinová, Marie; Zelenka, Jaroslav; Dvořák, Aleš; Kolář, Michal; Strnad, Hynek; Rimpelová, Silvie; Ruml, Tomáš; J Wong, Ronald; Vítek, Libor

    2014-01-01

    Spirulina platensis is a blue-green alga used as a dietary supplement because of its hypocholesterolemic properties. Among other bioactive substances, it is also rich in tetrapyrrolic compounds closely related to bilirubin molecule, a potent antioxidant and anti-proliferative agent. The aim of our study was to evaluate possible anticancer effects of S. platensis and S. platensis-derived tetrapyrroles using an experimental model of pancreatic cancer. The anti-proliferative effects of S. platensis and its tetrapyrrolic components [phycocyanobilin (PCB) and chlorophyllin, a surrogate molecule for chlorophyll A] were tested on several human pancreatic cancer cell lines and xenotransplanted nude mice. The effects of experimental therapeutics on mitochondrial reactive oxygen species (ROS) production and glutathione redox status were also evaluated. Compared to untreated cells, experimental therapeutics significantly decreased proliferation of human pancreatic cancer cell lines in vitro in a dose-dependent manner (from 0.16 g•L-1 [S. platensis], 60 μM [PCB], and 125 μM [chlorophyllin], p<0.05). The anti-proliferative effects of S. platensis were also shown in vivo, where inhibition of pancreatic cancer growth was evidenced since the third day of treatment (p < 0.05). All tested compounds decreased generation of mitochondrial ROS and glutathione redox status (p = 0.0006; 0.016; and 0.006 for S. platensis, PCB, and chlorophyllin, respectively). In conclusion, S. platensis and its tetrapyrrolic components substantially decreased the proliferation of experimental pancreatic cancer. These data support a chemopreventive role of this edible alga. Furthermore, it seems that dietary supplementation with this alga might enhance systemic pool of tetrapyrroles, known to be higher in subjects with Gilbert syndrome. PMID:24552870

  17. 血清胆红素与老年冠心病的相关性探讨%Correlation study of serum bilirubin and coronary heart disease in elderly patients

    Institute of Scientific and Technical Information of China (English)

    颜承靖; 颜群

    2013-01-01

    目的 探讨血清胆红素与老年冠心病的相关性. 方法 选取本院冠心病患者37例和体检健康老年者54例.记录所有研究对象基本资料,检测血清胆红素、血脂、肝功能,并进行相关分析.结果 冠心病组的血清总胆红素(TBIL)和间接胆红素(IBIL)浓度显著低于非冠心病组(P<0.05),而直接胆红素(DBIL)的水平在2组之间无统计学差异. 结论 在老年冠心病患者中血清胆红素(TBIL、IBIL)水平降低,在生理范围内轻度升高的胆红素是冠心痛的一个保护因素.%Objective To investigate the relationship between serum bilirubin and coronary heart disease in elderly patients. Methods Thirty-seven patients with coronary heart disease and 54 healthy cases were enrolled in this study. The clinical data of all the subjects were recorded. The levels of serum bilirubin,blood lipid,liver function were analyzed. Results The levels of serum total bilirubin (TBIL) and indirect bilirubin (IBIL) in the patients with coronary heart disease were significantly lower than those in the healthy cases (P <0. 05). The level of direct bilirubin ( DBIL) showed no difference between the two groups. Conclusions The level of serum bilirubin are decreased in elderly patients with coronary artery disease. In the physiological range mildly elevated bilirubin is one of the protective factors to coronary heart disease.

  18. 高血压患者血清胆红素与脉搏波速度相关性研究%Relationship between Serum Bilirubin and Pulse Wave Velocity in Hypertensive Patients

    Institute of Scientific and Technical Information of China (English)

    黎兰芳

    2013-01-01

    目的 探讨高血压患者血清胆红素与脉搏波速度的关系.方法 应用康普乐全自动动脉硬化检测系统检测508例确诊为原发性高血压患者的颈-股动脉脉搏波速度(CF-PWV),并检测空腹血清总胆红素.将总胆红素>11 μmol·L-1者作为高胆红素组(n= 221),总胆红素≤11μmol·L-1者作为低胆红素组(n=287),对血清总胆红素与CF-PWV值进行相关性分析.结果 高胆红素组CF-PWV值为(9.04士1.20)m·s-1低于低胆红素组的(10.89±2.18)m·s-1,2组比较差异有统计学意义(P<0.01);血清总胆红素与CF-PWV值呈负相关(r=-0.636,P<0.01).结论 高血压患者血清总胆红素与脉搏波速度呈负相关.%Objective To study the relationship between serum bilirubin and pulse wave velocity (PWV) in hypertensive patients.Methods Carotid-femoral PWV(CF-PWV) was determined by using Complior SP automatic arteriosclerosis measurement system in 508 patients with essential hypertension.According to the fasting serum total bilirubin levels,patients were divided into high bilirubin group (>11 μmol · L-1,n=221) and low bilirubin group (≤11 μmol · L-1,n=287).The correlation between serum total bilirubin and CF-PWV was analyzed.Results Compared with low bilirubin group,CF-PWV significantly decreased in high bilirubin group [(9.04±1.20)m · s-1 vs (10.89±2.18)m · s-1,P<0.01].There was a negative correlation between serum total bilirubin levels and CF-PWV (r=-0.636,P<0.01).Conclusion Serum total bilirubin levels are negatively correlated with PWV in hypertensive patients.

  19. Principles of a competitive binding assay for the study of the interactions of poorly water-soluble ligands with their soluble binding partners. Application to bilirubin with the use of Sephadex G-10 as a competitive adsorbent.

    Science.gov (United States)

    Meuwissen, J A; Kinnaert, M; Michiels, G; Heirwegh, K P

    1988-01-01

    1. A generally applicable method is described for obtaining experimental data on the interactions between a poorly water-soluble ligand and soluble binding factors, with the use of chemically inert solid adsorbent. The equilibrium distribution of the ligand between the liquid phase containing the soluble binders and the adsorbent must be measured and knowledge of the binding isotherm of the adsorbent is required. Procedures are given for the calculation of the binding parameters. 2. The method has been applied to quantify the interactions of bilirubin with serum and liver cytosol from the rat, Sephadex G-10 serving as the competing adsorbent. Reversible adsorption keeps the concentration of the free ligand low, thereby preventing formation of colloidal bilirubin. The sensitivity of the procedure accommodates the rather high binding affinities by which bilirubin generally interacts with its specific binding proteins. 3. The binding activities of serum and liver cytosol are of comparable magnitude. Binding of bilirubin by rat serum can be described by two independent binding sites, the affinities of which differ by two orders of magnitude. Only the site with the higher affinity appears to be of physiological importance. The major bilirubin-binding sites of rat liver cytosol seem to contribute equally to the overall binding activity of this preparation, provided that GSH is present. PMID:2449176

  20. Evaluation of new oxidation methods for the measurement of bilirubin on the aeroset clinical chemistry analyzer and comparison with methods on the Hitachi 717.

    Science.gov (United States)

    Sturm, Ernhard; Albrecht-Groos, Ragnhild; Seyfarth, Michael

    2002-01-01

    We evaluated analytical and performance quality of the new oxidation methods for direct and total bilirubin on the Abbott Aeroset clinical chemistry analyzer. Within-day imprecisions for Abbott Aeroset assays ranged from 0.7 to 2.9% and between-day imprecisions from 2.1 to 7.3%. Inaccuracies as compared with the control "target values" for the Jendrassik-Gróf method showed deviations of -18.2 to +4.2%. Limits of detection were determined and showed very low values of 300 micromol/l. A method comparison for 100 patient samples with established Jendrassik-Gróf and DPD methods on the Roche Hitachi 717 showed good linearities between the investigated methods (r > or = 0.995). Due to slopes that ranged from 0.829 to 0.950, reference ranges for the oxidation methods differ slightly from those of established Roche Jendrassik-Gróf methods, but results can be adapted by the introduction of converting factors. In conclusion, the oxidation bilirubin assays revealed convincing analytical and performance qualities for medical needs that were similar or even better than for established methods. Application of the oxidation methods on the Aeroset clinical chemistry analyzer also improves laboratory efficiency by increasing throughput, speed of obtaining results and lowered sample and reagent volumes compared to established methods.

  1. Study on the risk factors and preventive measures of neonatal bilirubin encephalopathy%新生儿胆红素脑病危险因素与预防措施研究

    Institute of Scientific and Technical Information of China (English)

    吴俊超; 刘军民; 刘华勇

    2011-01-01

    目的:探讨导致新生儿胆红索脑病的危险因索,优化其关键性预防措施.方法:回顾性分析1998年1月~2007年12月4 683例新生儿高间接胆红素血症(HB)及其中64例并发胆红素脑病(BE)的临床资料.结果:①4 683例HB患儿中的甲组2 366例为该院分娩,接受胆红素动态监测,HB得到及时治疗,无BE发生;乙组2 317例为市、县、乡镇分娩,没有动态监测胆红素并及时治疗HB,并发64例BE.甲乙两组病因分布对比,差异无统计学意义(P>0.05);②乙组2 317例中,1 187例接受过围产期保健服务者,并发16例BE,1 130例未接受服务者,并发48例BE,对比检验,差异有统计学意义(P<0.01);③导致64例BE的危险因素为:一是围产期母儿因素、溶血因素,感染因素等多病因并存,二是存在缺氧、酸中毒、低体温、低蛋白、低血糖、低热量等合并症.结论:建立健全对HB发生、发展的动态监测机制,针对病因,及早治疗HB,防治合并症,是预防或消除BE的关键措施;加强围产期保键服务,也能有效地降低BE发生率.%Objective: To explore the risk factors of neonatal bilirubin encephalopathy, and optimize its key preventive measures. Methods: The clinical data of 4 683 neonates with indirect hyperbilirubinemia and 64 neonates with indirect hyperbilirubinemia combined with bilirubin encephalopathy from January 1998 to December 2007 were analyzed retrospectively. Results: Among 4 683 neonates with indirect hyperbilirubinemia, 2 366 neonates in group A deliveried in the hospital received dynamic monitoring of bilirubin and they were treated timely, no bilirubin encephalopathy occurred; 2 317 neonates in group B deliveried in hospitals in other cities, counties and townships didn't receive dynamic monitoring of bilirubin and they were not treated timely, 64 neonates combined with bilirubin encephalopathy. There was no significant difference in the distribution of etiological causes between the two groups

  2. Clinical application value of bilirubin detection in cerebrospinal fluid of neonates with hyperbilirubinemia%高胆红素血症新生儿脑脊液胆红素检测的临床应用价值探讨

    Institute of Scientific and Technical Information of China (English)

    周柏林; 王全震; 吕清秀; 董静

    2013-01-01

    Objective:To explore the clinical application value of unconjugated bilirubin detection in cerebrospinal fluid of neonates with hyperbilirubinemia.Methods:The levels of unconjugated bilirubin in cerebrospinal fluid and blood of 285 neonates with hyperbilirubinemia were detected,the ratio of unconjugated bilirubin to albumin (B/A) was calculated,and neonatal behavioral neurological assessment (NBNA) was performed.Results:The levels of unconjugated bilirubin in blood and cerebrospinal fluid,B/A in blood in neonates with bilirubin encephalopathy at warning period and spasm period were statistically significantly higher than those in neonates with simple hyperbilirubinemia (P < 0.05),the level of unconjugated bilirubin in cerebrospinal fluid of neonates with bilirubin encephalopathy at spasm period was statistically significantly higher than that of neonates with bilirubin encephalopathy at warning period (P < 0.05),the levels of unconjugated bilirubin in blood and cerebrospinal fluid,B/A in cerebrospinal fluid of neonates with abnormal NBNA score were statistically significantly higher than those of neonates with normal NBNA score,there was a significant correlation between unconjugated bilirubin and NBNA score in cerebrospinal fluid.Conclusion:Unconjugated bilirubin detection in cerebrospinal fluid not only diagnose bilirubin encephalopathy early,but also reflect the brain function of neonates with hyperbilirubinemia.%目的:探讨脑脊液中未结合胆红素检测在高胆红素血症新生儿中的临床应用价值.方法:对285例高胆红素血症新生儿的脑脊液和血液未结合胆红素水平进行检测,计算未结合胆红素/白蛋白比值(B/A),并进行新生儿行为神经评分(NBNA).结果:警告期和痉挛期的胆红素脑病新生儿血中未结合胆红素(UCB)、脑脊液(CSF)中UCB和血B/A比值均明显高于单纯高胆红素血症的新生儿,差异有统计学意义(P<0.05),并且出现痉挛期的新生儿CSF中UCB高于警

  3. Study of relationship between the levels of serum bilirubin ,uric acid and unstable angina pectoris%不稳定型心绞痛患者血清胆红素及尿酸水平的分析

    Institute of Scientific and Technical Information of China (English)

    梁启权; 曾胜宏

    2009-01-01

    目的 探讨冠心病不稳定型心绞痛与胆红素及尿酸的关系.方法 将入选202例冠心病不稳定型心绞痛患者,采集空腹静脉血测定总胆红素、直接胆红素、间接胆红素及尿酸,比较其心绞痛发作时、3个月、6个月及1年内未再发作时胆红素及尿酸的变化情况.结果 心绞痛发作时胆红素降低,尿酸偏高.结论 胆红素和尿酸水平可间接反映不稳定型心绞痛机体氧化、抗氧化情况,胆红素对评估病情有一定帮助.%Objective To investigate the relationship between the levels of serum bilirubin,uric acid(UA) and coronary heart disease unstable angina pectoris.Methods The leves of total bilirubin (TBIL),direct bilirubin (DBIL),indirect bilirubin(IBIL) and UA in venous blood by limosis were determind in 202 patients with unstable angina pectoris.We determine the different levels of TBIL,DBIL,IBIL and UA when they were suffering from angina pectoris.Then we respectively determine the levels of TBIL,DBIL,IBIL and UA in 3 months,6 months and 12 months after they had been suffered from angina pectoris.Results The levels of serum bilirubin were lower and UA were higher,when the patients were suffering from angina pectoris.Conclusion We can indirectly assess the oxidative and antioxidative activities by testing bilirubin and UA in unstable angina pectoris.

  4. 急性脑梗死后胆红素升高与卒中严重性的相关研究%Research on Bilirubin increased after AIS associated with the severity of stroke

    Institute of Scientific and Technical Information of China (English)

    张俊玲

    2015-01-01

    Objectives To observe the changes of bilirubin in earlier acute ischemic stroke ( AIS) and whether such changes are associated with the severity of the stroke.Methods Bilirubin and other biochemical indexes were measured in 108 AIS patients and 38 transientischemic attack ( TIA) patients which set as the control group.First, the level of bilirubin and it’s distribution were com-pared between the AIS and control group.According to a cut-off point, we next analyzed the impacted factors of elevated bilirubin in-cluding the direct bilirubin (Dbil) and total bilirubin(Tbil), especially the correlation between elevated bilirubin and the severity of stroke.Results The serum direct bilirubin and total bilirubin in patients with AIS group was significantly higher than the TIA group.In both groups, we found the distribution of intervals is different.The percentage of low bilirubin is lower in AIS group com-pared with TIA group,while the percentage of high bilirubin is higher in AIS group compared with TIA group.Conclusions The ser-um levels of Dbil and Tbil were increased after AIS, which linked to the severity of stroke.%目的:观察急性脑梗死( acute ischemic stroke,AIS)早期胆红素的变化情况及此种改变是否与卒中的严重程度相关。方法选取108例AIS患者作为试验组,38例TIA患者作为对照组,测定所有患者的胆红素以及其他相关的生化指标。首先,比较AIS组与对照组胆红素的水平以及其分布。根据设立的节点,我们分析了胆红素(包括直接胆红素以及总胆红素)升高的影响因素,尤其是分析升高的胆红素与卒中严重程度之间的相关性。结果 AIS组患者血清直接胆红素以及总胆红素显著高于TIA组。在两组中我们发现其分布区间也不同,AIS的低胆红素组比率低于TIA组,而AIS组高胆红素的百分比相比TIA组较高。结论血清直接胆红素和总胆红素水平在脑卒中后升高,并与卒中的严重程度相关。

  5. 糖尿病肾病患者胆红素和血红蛋白的相关性及临床意义%Patients with Diabetic Nephropathy and its Clinical Significance of Bilirubin and Hemoglobin

    Institute of Scientific and Technical Information of China (English)

    尤守堂; 沈红艳

    2015-01-01

    Objective To analyze the relationship between the diabetic nephropathy patients peripheral blood bilirubin and hemoglobin, to explore the factors inlfuencing the serum bilirubin in patients with nephropathy of diabetes. Methods This study included 106 patients with diabetic nephropathy patients, 113 cases of diabetic patients without complications and 120 healthy controls were detected in the peripheral blood, the total bilirubin, direct bilirubin, indirect bilirubin and hemoglobin content and total bilirubin and hemoglobin correlation analysis. Results Compared with the control group and diabetic group without complications, diabetic nephropathy group total bilirubin, direct bilirubin, indirect bilirubin and hemoglobin levels were signiifcantly reduced, the differences were statistically signiifcant (P<0.001);correlation analysis showed, diabetic nephropathy group total bilirubin level was positively associated with hemoglobin (r=0.455, P<0.001). Conclusion Decreased serum bilirubin in patients with diabetic nephropathy associated with the lower hemoglobin, positive correction has an important role for the treatment of anemia in patients with diabetic nephropathy.%目的:分析糖尿病肾病患者外周血胆红素水平与血红蛋白之间的关系,探讨糖尿病肾病患者血清胆红素变化的影响因素。方法研究对象包括106例糖尿病肾病患者,113例糖尿病无并发症患者和120例健康对照者,检测上述各组外周血总胆红素、直接胆红素、间接胆红素和血红蛋白含量并分析总胆红素与血红蛋白相关性。结果与对照组和糖尿病无并发症组比较,糖尿病肾病组总胆红素、直接胆红素、间接胆红素及血红蛋白水平均显著降低,差异均有统计学意义(P<0.001);相关分析显示,糖尿病肾病组总胆红素水平与血红蛋白呈正相关(r=0.455,P<0.001)。结论糖尿病肾病患者血清胆红素的降低与血红蛋白降低有关,积

  6. Correlations between periparturient serum concentrations of non-esterified fatty acids, beta-hydroxybutyric acid, bilirubin, and urea and the occurrence of clinical and subclinical postpartum bovine endometritis

    Directory of Open Access Journals (Sweden)

    Tenhagen Bernd-Alois

    2010-10-01

    Full Text Available Abstract Background Postpartum endometritis in cattle is a multifactorial disease with high economic impact. Both, clinical endometritis (CE and subclinical endometritis (SCE result in decreased reproductive performance. Results from in vitro studies led to the implication that non-esterified fatty acids (NEFA, beta-hydroxybutyric acid (BHBA, bilirubin, and urea could be used as predictors for endometritis in veterinary practice. In this field study, we set out to establish optimal predictor cut points of these metabolic parameters for the detection of CE and SCE. Serum samples were collected one week prior to parturition (wk -1, in the first week postpartum (wk +1 and between 28 and 35 days postpartum (wk +5 from 209 Holstein-Friesian cows. At wk +5, all cows were examined for signs of CE and SCE. Results Higher concentrations of urea at wk +1 were associated with increased odds of CE (OR = 1.7, P = 0.04 in primiparous (PP cows. A predictor cut point of 3.9 mmol/L (sensitivity: 61%, specificity: 70% was determined. In multiparous (MP cows, the logistic regression model revealed that higher concentrations of NEFA at wk -1 were associated with increased odds of CE and SCE (healthy vs. CE: OR = 9.1, P = 0.05; healthy vs. SCE: OR = 12.1, P = 0.04. A predictor cut point of 0.3 mmol/L (sensitivity: 38%, specificity: 87% and sensitivity: 35%, specificity: 89%, respectively was determined. Increasing concentrations of urea at wk +5 were associated with decreased odds of CE (healthy vs. CE: OR = 0.6, P = 0.01; SCE vs. CE: OR = 0.5, P = 0.03. A predictor cut point of 3.8 mmol/L (sensitivity: 52%, specificity: 81% was determined. For BHBA and bilirubin relationships with CE or SCE were not detected. Conclusions The corresponding combinations of sensitivity and specificity of the determined predictor cut points were not satisfactory for practical use. Thus, the analysed parameters, i.e. NEFA, BHBA, bilirubin, and urea, at the chosen time points, i.e. at wk

  7. Correlations between periparturient serum concentrations of non-esterified fatty acids, beta-hydroxybutyric acid, bilirubin, and urea and the occurrence of clinical and subclinical postpartum bovine endometritis

    Science.gov (United States)

    2010-01-01

    Background Postpartum endometritis in cattle is a multifactorial disease with high economic impact. Both, clinical endometritis (CE) and subclinical endometritis (SCE) result in decreased reproductive performance. Results from in vitro studies led to the implication that non-esterified fatty acids (NEFA), beta-hydroxybutyric acid (BHBA), bilirubin, and urea could be used as predictors for endometritis in veterinary practice. In this field study, we set out to establish optimal predictor cut points of these metabolic parameters for the detection of CE and SCE. Serum samples were collected one week prior to parturition (wk -1), in the first week postpartum (wk +1) and between 28 and 35 days postpartum (wk +5) from 209 Holstein-Friesian cows. At wk +5, all cows were examined for signs of CE and SCE. Results Higher concentrations of urea at wk +1 were associated with increased odds of CE (OR = 1.7, P = 0.04) in primiparous (PP) cows. A predictor cut point of 3.9 mmol/L (sensitivity: 61%, specificity: 70%) was determined. In multiparous (MP) cows, the logistic regression model revealed that higher concentrations of NEFA at wk -1 were associated with increased odds of CE and SCE (healthy vs. CE: OR = 9.1, P = 0.05; healthy vs. SCE: OR = 12.1, P = 0.04). A predictor cut point of 0.3 mmol/L (sensitivity: 38%, specificity: 87% and sensitivity: 35%, specificity: 89%, respectively) was determined. Increasing concentrations of urea at wk +5 were associated with decreased odds of CE (healthy vs. CE: OR = 0.6, P = 0.01; SCE vs. CE: OR = 0.5, P = 0.03). A predictor cut point of 3.8 mmol/L (sensitivity: 52%, specificity: 81%) was determined. For BHBA and bilirubin relationships with CE or SCE were not detected. Conclusions The corresponding combinations of sensitivity and specificity of the determined predictor cut points were not satisfactory for practical use. Thus, the analysed parameters, i.e. NEFA, BHBA, bilirubin, and urea, at the chosen time points, i.e. at wk -1, at wk +1

  8. Bilirubin nomograms for identification of neonatal hyperbilirubinemia in healthy term and late-preterm infants:a systematic review and meta-analysis

    Institute of Scientific and Technical Information of China (English)

    Zhang-Bin Yu; Shu-Ping Han; Chao Chen

    2014-01-01

    Background: Hyperbilirubinemia occurs in most healthy term and late-preterm infants, and must be monitored to identify those who might develop severe hyperbilirubinemia. Total serum bilirubin (TSB) or transcutaneous bilirubin (TcB) nomograms have been developed and validated to identify neonatal hyperbilirubinemia. This study aimed to review previously published studies and compare the TcB nomograms with the TSB nomogram, and to determine if the former has the same predictive value for signifi cant hyperbilirubinemia as TSB nomogram does. Methods: A predefined search strategy and inclusion criteria were set up. We selected studies assessing the predictive ability of TSB/TcB nomograms to identify significant hyperbilirubinemia in healthy term and latepreterm infants. Two independent reviewers assessed the quality and extracted the data from the included studies. Meta-Disc 1.4 analysis software was used to calculate the pooled sensitivity, specificity, and positive likelihood ratio of TcB/TSB nomograms. A pooled summary of the receiver operating characteristic of the TcB/TSB nomograms was created. Results: After screening 187 publications from electronic database searches and reference lists of eligible articles, we included 14 studies in the systematic review and meta-analysis. Eleven studies were of medium methodological quality. The remaining three studies were of low methodological quality. Seven studies evaluated the TcB nomograms, and seven studies assessed TSB nomograms. There were no differences between the predictive abilities of the TSB and TcB nomograms (the pooled area under curve was 0.819 vs. 0.817). Conclusions: This study showed that TcB nomograms had the same predictive value as TSB nomograms, both of which could be used to identify subsequent signifi cant hyperbilirubinemia. But this result should be interpreted cautiously because some methodological limitations of these included studies were identifi ed in this review.

  9. 血清胆红素与尿酸检验对冠心病的诊断价值分析%Diagnostic Value of Serum Bilirubin and Uric Acid in Patients with Coronary Heart Disease

    Institute of Scientific and Technical Information of China (English)

    黄飞

    2016-01-01

    Objective To investigate the role of serum bilirubin and uric acid in the detection of coronary artery disease.Methods Biochemical analysis of 82 cases of various indicators of coronary heart disease patients and healthy people for comparison.Results Bilirubin in observation group was significantly lower than healthy people;higher serum uric acid levels ( <0.05),different groups of serum bilirubin and uric acid levels in patients with coronary heart disease were significantly different ( <0.05).Conclusion Serum bilirubin and uric acid levels in patients with coronary heart disease is detected may be clinically assess the extent of reference.%目的:探讨血清胆红素与尿酸检测对冠心病的作用。方法82例冠心病患者与健康人员对比各生化指标分析。结果观察组胆红素明显低于健康体检者。血清尿酸水平较高(<0.05)﹐不同组别冠心病患者血清胆红素与尿酸水平差异显著(<0.05)。结论冠心病患者血清胆红素与尿酸水平检测可为临床评估病症程度参考。

  10. 2型糖尿病患者血清胆红素水平与糖尿病病程负相关%Increased duration of diabetes is associated with lower serum bilirubin concentration in type 2 diabetic patients

    Institute of Scientific and Technical Information of China (English)

    李佳霖; 陈艳曙; 徐淼; 褚建平; 励丽

    2016-01-01

    Objective To investigate the association between physiological serum bilirubin concentration and duration of type 2 diabetes. Methods A total of 1 272 patients with type 2 diabetes admitted to the Department of Endocrinology of Ningbo First Hospital from January 2013 to June 2015 were included for the study. Clinic parameters were collected from electronic medical records. All subjects were classified into four groups by diabetes duration quartiles (<5 years, 5-9 years, 10-14 years and≥15 years). The adjusted concentration of three types of bilirubin were calculated and compared using covariance analysis. Pearson correlation analysis and multiple linear regression analysis were adopted to examine the relationship between duration of diabetes and serum bilirubin. Results With increase of diabetes duration from the lowest quartiles to the highest quartiles, serum total bilirubin, direct bilirubin and indirect bilirubin concentration tended to decrease. This trend persisted after adjustment for age, gender, hemoglobin, smoking, drinking, blood pressure, lipid profile, weight, ALT, AST, HbA1c and statin use. The adjusted mean concentration of total bilirubin from the lowest quartiles to the highest quartiles for diabetes duration was 13.26, 12.36, 12.07 and 11.71mmol/L (F=4.36, P=0.005). The direct bilirubin was 5.01, 4.67, 4.47 and 4.35mmol/L (F=4.63, P=0.003).The indirect bilirubin was 8.25, 7.69, 7.60 and 7.37 μmol/L(F=2.96, P=0.033). Pearson correlation analysis showed that total bilirubin concentration (r=-0.241, P<0.01), direct bilirubin concentration (r=-0.23,P<0.01), and indirect bilirubin concentration (r=-0.21,P<0.01) were inversely correlated with duration of diabetes. Multiple linear regression analysis showed that an increment of one year in diabetes duration was associated with 0.087mmol/L decrease in total bilirubin, 0.037mmol/L in direct bilirubin and 0.051mmol/L in indirect bilirubin separately. Conclusion Serum bilirubin concentration is negatively

  11. 新生儿小时胆红素百分位曲线图预测高胆红素血症的研究进展%Prediction of neonatal hyperbilirubinemia by the hour-specific bilirubin nomogram

    Institute of Scientific and Technical Information of China (English)

    孙小凡

    2015-01-01

    Neonatal hyperbilirubinemia,a common disease in the newborn period,account for about 8% ~ 11% in all newborns.Without getting proper controlling or being treated on time,severe hyperbilirubinemia may develop bilirubin encephalopathy leading to nerve damage and functional disability,which causes society and family problems.The hour-specific bilirubin nomogram is used to evaluate neonatal bilirubin discharge risks,intervention and follow-up.All pediatricians all over the world are focus on reducing the occurrence of bilirubin encephalopathy.In this study,we reviewed all researches about predicting the occurrence of neonatal hyperbilirubinemia after discharge using the hour-specific bilirubin nomogram which will better guide clinical diagnosis and treatment.%新生儿高胆红素血症是新生儿期的常见病,约8%~11%的新生儿发生严重的高胆红素血症.严重高胆红素血症如果没有得到及时控制和治疗,可发展为胆红素脑病,导致神经损害和功能残疾.利用小时胆红素百分位曲线图对新生儿进行出院的风险预测、干预及随访,降低胆红素脑病的发生,是国内外儿科医生关注的焦点.该文就各国制备的小时胆红素百分位曲线预测出院后高胆红素血症发生风险的研究进展作一综述,以便于小时胆红素百分位曲线更好地指导临床诊疗.

  12. 亲和膜配基的结构和密度对胆红素吸附的影响%Effect of ligand composition and ligand density of affinity membrane on bilirubin removal

    Institute of Scientific and Technical Information of China (English)

    鞠佳; 聂飞; 段志军; 贺高红

    2013-01-01

    High concentration of bilirubin may cause neurotoxicity, permanent brain damage, and even death in severe cases. It is difficult to remove bilirubin from serum by circulated adsorption, because bilirubin can be tightly bound with albumin as a complex in human serum. The albumin in the complex has a larger volume than that of bilirubin, which results in high steric hindrance of adsorption or displacement of bilirubin. In order to enhance serum bilirubin adsorption capacity, five kinds of amines and eight kinds of amino acids as specific ligands were immobilized on cellulose acetate (CA) /polyethyleneimine (PEI) membrane via the glutaraldehyde modification method. Experimental results indicated that although the primary amine contents of modified membranes were only one third of CA/PEI membrane, bilirubin adsorption capacities of four kinds of modified membranes increased by more than 100%. Moreover, the adsorption selectivity of the four modified membranes for bilirubin/human albumin pair was greater than that of CA/ PEI membrane. Prolongation of the spacer and immobilization of specific ligand could be the cause of such results. Ligand composition had a significant influence on bilirubin adsorption capacity. The ligands containing hydrophobic and primary amino groups could enhance bilirubin adsorption capacity, and the ligands with carboxyl radicals could decrease bilirubin adsorption capacity of the modified membrane. Moreover, ligand density, ligand steric hindrance, and other factors could also influence bilirubin adsorption capacity. In the experiments, the ligands containing high steric hindrance groups, such as phenyl groups had a negative effect on bilirubin adsorption capacity of the modified membrane, and its bilirubin adsorption capacity could not be enhanced via increasing ligand density. However, bilirubin adsorption capacity of the membrane modified with low steric hindrance ligand, for example hexamethylene-diamine (3-HMD) -modified membrane

  13. Optimal time of phototherapy for newborns whose total bilirubin ranges from 75 th to 95th percentile in the hour - specific serum bilirubin nomogram%对总胆红素位于小时胆红素第75-95百分位的新生儿光疗时机的研究

    Institute of Scientific and Technical Information of China (English)

    韩金粉; 彭艳松; 刘学工

    2012-01-01

    Objective To study the optimal time of phototherapy for newborns (gestational age≥36 weeks and birth weight≥2500 g) whose total bilirubin ranges from 75th to 95th percentile in the hour - specific serum bilirubin nomogram.Methods The hour - specific serum bilirubin nomogram recommended by America in 2004 was used in this study.Newborns total serum bilirubin (TSB) values from 75th to 95th percentile were divided into 2 groups based on high -risk factors of jaundice inside 72 hours after birth:the observed group with high - risk factors of jaundice and the CK group without them.The number of TSB of the newborns TSB beyond 95th percentile outside 72 h after birth was researched in the two groups.Results Before discharge,total serum bilirubin (TSB) values of 12.8% (5/39) infants were in the high risk zone ( >95th percentile) in the CK group and of 32.2% (10/31) were in that zone in the observed group.The difference was significant ( x2 =3.876,P < 0.05 ).Conclusions Phototherapy should begin inside 72 hours after birth for the newborns with high - risk factors of jaundice and (TSB) values from 75 th to 95 th percentile,and the primary diseases should be treated actively.%目的 探讨胎龄≥36周、体质量≥2500 g、总胆红素值位于小时胆红素百分位值列线图第75~95百分位的新生儿合理光疗时机.方法 利用美国2004年推荐使用的小时胆红素百分位值列线图,将生后72 h内总胆红素值位于第75 ~95百分位的新生儿,分为有黄疸高危因素的研究组及无黄疸高危因素的对照组,比较两组新生儿生后72 h后胆红素上升至第95百分位病例数的统计学差异.结果 对照组39倒,生后72 h后总胆红素上升至第95百分位5倒,发生率为12.8% (5/39);研究组31例,生后72 h后总胆红素上升至第95百分位10例,发生率为32.2%( 10/31),差异有统计学意义(x2=3.876,P< 0.05).结论 对生后72 h内总胆红素值位于小时胆

  14. PREPARATION AND ADSORPTION PROPERTIES OF BILIRUBIN ADSORBENTS WITH DIFFERENT LIGANDS BASED ON SEPHAROSE CL-4B%胆红素吸附剂功能基组成及其吸附特性研究

    Institute of Scientific and Technical Information of China (English)

    王智; 陈书博; 徐丽; 谢健; 贾凌云

    2011-01-01

    为了获得性能较佳的胆红素吸附剂,本研究考察了功能基种类、链长、偶联密度等因素对吸附剂吸附性能的影响.结果表明,当功能基具有足够的链长,与胆红素相似的疏水性及较高的偶联密度时,能够提高吸附剂的胆红素吸附能力.实验表明,链长21个原子、偶联73μmol/mL正丁胺的吸附剂对胆红素的吸附能力最强,在30℃、300mg/L的白蛋白结合胆红素溶液中,吸附1h即达到平衡,胆红素吸附量达到3.01 mg/mL (90.3mg/g干重);较高的温度有利于其对胆红素的吸附.50mL材料对500mL实际病人血浆动态吸附2.5h,总胆红素(277.4mg/L)去除率达到55.2%,同时对血浆蛋白的吸附较低.所有结果显示该吸附剂具有很强的实际应用的潜力.%A series of bilirubin adsorbents with different ligand type, length and density were prepared by activation of Sepharose CL-4B and their adsorption capacities to bilirubin were measured in static adsorption experiments. The results showed that the structure and properties of ligands, such as sufficient spacer-length, higher grafting density on the adsorbent and the similar hydrophobicity with bilirubin, were helpful to improve adsorption capacity of bilirubin. These experiments provided some ideas for designing new adsorbents. Among these adsorbents, the adsorbent with 73μmol/mL butylamine and 23-atom spacer showed the strongest adsorption ability to bilirubin in BSA-bilirubin solution, which could reach the adsorption balance at 30°C in lh, and got binding capacity of 3.01mg/mL gel. Moreover, higher temperature was more favorable to the adsorption of bilirubin. The in vitro hemoperfusion experiments were carried out by adding 50mL adsorbent into 500mL patient's plasma and 55.2% of bilirubin (277.4mg/L) was removed after 2.5h, and at the same time, adsorption for plasma proteins was low. These results indicated that the Butylamine-Sepharose adsorbents could be a potential choice for specific

  15. 胆红素在纳米CdSe表面吸附行为的QCM研究%Investigation of Absorption Behavior of Bilirubin on nanocrystalline CdSe microlayers using QCM

    Institute of Scientific and Technical Information of China (English)

    刘国聪; 梁达文; 庞起; 董辉; 曾楚杰; 韦庆敏; 段学臣

    2007-01-01

    The absorption behavior of bilirubin on nanocrystal CdSe was investigated in detail using quartz crystal microbalance (QCM). The adsorption kinetic parameters estimated from the in situ frequency measurement is (1.5 ± 0.32)×106 M-1(mean ± S.D).with the present method, Impedance characteristic of CdSe suspension and response of the Piezoelectric crystal Impedance (PCI)sensor were detailedly analysed. It was found that the adsorption of bilirubin on the surface of CdSe electrodes strongly depended on a few influencing factors such as pH,solution concentration temperature,and solution ionicstrength.The results indicate the amount of adsorbed bilirubin increased with increasing of hydroxyl ions, bilirubin concentration and higher solution ionic strength, but small at higher temperature. The sensors based on the CdSe microlavers show especial sensitive to bilirubin. QCM measurement provides a facile method for monitoring the adsoption/desorption process of bilirubin on nanocrystalline CdSe.%用石英微天平技术详细研究了胆红素在纳米CdSe晶体表面上的吸附行为.从频率测试中得出的吸附动力学参数约是(1.5±0.32)×106 M-1(平均数±相对误差).此法细致研究了CdSe悬浮液的阻抗性能和压电性能.实验中发现胆红素在CdSe纳米晶上的吸附作用受体系温度、pH和离子强度等因素影响:较高温度不利于胆红素的吸收,但随着pH、离子强度和胆红素浓度的增大胆红素的吸附量明显增大.研究表明基于CdSe纳米组装的传感器对胆红素十分敏感.此技术为分析胆红素在CdSe纳米拓扑界面的吸附与解吸机制提供了有效的方法.

  16. Study on serum levels of lipids and bilirubin in patients with coronary heart disease%冠心病患者血脂和胆红素变化的研究

    Institute of Scientific and Technical Information of China (English)

    韦光海

    2008-01-01

    Objective To investigate the relationship of the levels of serum lipids and bilirubin with occurrence and development of coronary heart disease (CHD). Methods 139 CHD patients and 118 healthy controls were involved in the study. The serum levels of triglyeride (TG), total cholester-ol (TC), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C)and bilirubin were measured and compared. Results In CHD group, the levels of TG, TC, LDL-C,TG, HDL-C, LDL-C and HDL-C were significantly elevated, while the levels of HDL-C, total biliru-bin (Tbil) and indirect bilirubin (Ibil) were markedly declined. The changes were associated with the severity of coronary artery disease. There wasn't significant difference of direct bilirubin level between CHD group and healthy control group. Conclusion Blood lipid abnormality and declination of bilirubin level are closely associated with coronary heart disease. It is possible to prevent the occurrence of car-diovascular event by early intervention.%目的 探讨血脂、胆红素与冠心病发生、发展的关系.方法 随机抽取139例冠心病患者和118例健康者进行血清甘油三酯(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)及胆红素水平检测与对比分析.结果 冠心病组患者TG、TC、LDL-C、TG/HDL-C、LDL-C/HDL-C显著升高(P0.05).结论 血脂异常和胆红素水平降低与冠心病密切相关.早期干预有可能预防心血管事件的发生.

  17. 经皮测胆红素在新生儿高胆红素血症中的应用价值%The Application Value of Transcutaneous Bilirubin in Neonatal Hyperbilirubinemia

    Institute of Scientific and Technical Information of China (English)

    周琼; 张飞忠

    2014-01-01

    Objectiv:To investigate the application value of transcutaneous bilirubin (TCB) in neonatal hyperbilirubinemia. Methods:215 cases of children with hyperbilirubinemia were dynamically tested by transcutaneous bilirubin method and blood bilirubin method at 6h, 12h, 2d, 4d, 7d and other time points respectively after the admission, and the correlation of the two sets of data was compared.Results:the values measured by transcutaneous bilirubin method and blood bilirubin method at 6h, 12h, 2d, 4d, 7d and other time points showed a linear correlation relationship (P<0.05).Conclusion:TCB has many advantages such as non-invasive, repeatable testing, easy to perform, rapid detection, dynamic monitoring of neonatal bilirubin changes, etc. it deserves clinical application.%目的::探讨经皮测胆红素(TCB)在新生儿高胆红素血症中的应用价值。方法:在入院第6h、12h、2d、4d、7d等时间点采用经皮测胆红素和经血测胆红素方法对215例高胆红素血症患儿进行动态检测,比较两组数据的相关性。结果:经皮测胆红素值和经血测胆红素值在新生儿入院第6h、12h、2d、4d、7d等时间点呈直线相关性关系(P<0.05)。结论:TCB具有无创伤性、可重复多次检测、操作简单易学、检测迅速、可动态监测新生儿胆红素变化情况等优点,值得临床推广使用。

  18. 血清胆红素和血脂对冠心病发生的作用%Effection of serum bilirubin and serum lipid on coronary heart disease

    Institute of Scientific and Technical Information of China (English)

    李现立; 郑晓晖; 郝增光; 杨睿; 葛慧敏

    2010-01-01

    目的 探讨血清胆红素和血脂在冠心病发生中的作用.方法 75例冠心病患者被分为高脂血症组(46例)和非高脂血症组(29例),35例正常健康成人作为对照组,分别测定血清总胆红素(TBIL)、直接胆红素(DBIL)、间接胆红素(IBIL)以及总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白(LDL)和高密度脂蛋白(HDL)水平等指标作对比分析.结果 高脂血症组TBIL、DBIL、IBIL均低于非高脂血症组和正常对照组,差异有统计学意义(P<0.05);非高脂血症组血清胆红素水平低于正常对照组,差异有统计学意义(P<0.05).高脂血症组同非高脂血症组、正常对照组比较,TC、TG和LDL增高,HDL降低,差异有统计学意义(P<0.05);非高脂血症组同正常对照组比较,TC、TG和LDL增高,HDL降低,但差异无统计学意义(P>0.05).结论 低胆红素水平在高脂血症和非高脂血症的冠心病发生中起着重要的作用,是冠心病的独立危险因素.%Objective To investigate the effection of serum bilirubin and serum lipid on coronary heart disease (CHD). Methods Seventy -five patients with CHD group were divided into hyperlipidemia group(46 cases) and non- hyperlipidemia group (29 cases),35 healthy controls (healthy control group)were enrolled in the study. Serum total bilirubin (TBIL), direct bilirubin (DBIL), indirect bilirubin (IBIL)serum triglycride ( TG), total cholestrol ( TC ), low density lipoprotein (LDL), high density lipoprotein (HDLand serum lipid were examined for all subiects,and then the results were compared and analyzed. Results The contents of serum TBIL, direct bilirubin (DBIL), indirect bilirubin (IBIL)were lower in hyperlipidemia group than those of non - hyperlipidemia and healthy control group, the difference was significant (P <0. 05 ). The contents of serum bilirubin were lower in non - hyperlipidemia group than those of healthy control group, the difference was significant( P < 0.05 ). TC,TG and LDL were

  19. Determination of Effect of Low Dose Vs Moderate Dose of Clofibrate on the Decreasing in Serum Bilirubin Level in the Term Healthy Neonate

    Directory of Open Access Journals (Sweden)

    Mohammad Ashkan Moslehi

    2007-05-01

    Full Text Available Objective: This study was performed to determine the effect of low doses (25 mg/Kg vs. moderate doses (50 mg/Kg of clofibrate in treatment of non-hemolytic hyperbilirubin¬emia in healthy term neonates. Material & Methods: A clinical randomized controlled trial was performed in three groups of healthy term neonates. One group was treated with a single low dose of clofibrate (25 mg/Kg while another group received a single moderate dose (50mg/kg both orally plus phototherapy; the results were compared with those of a control group that received only phototherapy. Findings: The mean total serum bilirubin (TSB levels of 12th and 24th hours were significantly lower in the two clofibrate-treated groups as compared with the control group (P=0.002 and P=0.003, respectively. There was no statistically significant difference between the mean of TSB levels in the two clofibrate-treated groups. Treatment with clofibrate also resulted in a shorter duration of jaundice and a decreased use of phototherapy (P=0.01. No side effects were observed. Conclusion: The present study demonstrated that there was no significant difference between a low (25mg/Kg and moderate (50mg/Kg doses of clofibrate in reducing TSB levels and also decreased need of phototherapy in healthy breastfed term newborns with marked hyperbilirubin¬emia (TSB>16 mg/dL.

  20. Validation of transcutaneous bilirubin nomogram for identifying neonatal hyperbilirubinemia in healthy Chinese term and late-preterm infants: a multicenter study

    Directory of Open Access Journals (Sweden)

    Zhangbin Yu

    2014-06-01

    Full Text Available OBJECTIVE: to prospectively validate a previously constructed transcutaneous bilirubin (TcB nomogram for identifying severe hyperbilirubinemia in healthy Chinese term and late-preterm infants. METHODS: this was a multicenter study that included 9,174 healthy term and late-preterm infants in eight hospitals of China. TcB measurements were performed using a JM-103 bilirubinometer. TcB values were plotted on a previously developed TcB nomogram, to identify the predictive ability for subsequent significant hyperbilirubinemia. RESULTS: in the present study, 972 neonates (10.6% developed significant hyperbilirubinemia. The 40th percentile of the nomogram could identify all neonates who were at risk of significant hyperbilirubinemia, but with a low positive predictive value (PPV (18.9%. Of the 453 neonates above the 95th percentile, 275 subsequently developed significant hyperbilirubinemia, with a high PPV (60.7%, but with low sensitivity (28.3%. The 75th percentile was highly specific (81.9% and moderately sensitive (79.8%. The area under the curve (AUC for the TcB nomogram was 0.875. CONCLUSIONS: this study validated the previously developed TcB nomogram, which could be used to predict subsequent significant hyperbilirubinemia in healthy Chinese term and late-preterm infants. However, combining TcB nomogram and clinical risk factors could improve the predictive accuracy for severe hyperbilirubinemia, which was not assessed in the study. Further studies are necessary to confirm this combination.

  1. Development and validation of serum bilirubin nomogram to predict the absence of risk for severe hyperbilirubinaemia before discharge: a prospective, multicenter study

    Directory of Open Access Journals (Sweden)

    Romagnoli Costantino

    2012-02-01

    Full Text Available Abstract Background Early discharge of healthy late preterm and full term newborn infants has become common practice because of the current social and economic necessities. Severe jaundice, and even kernicterus, has developed in some term infants discharged early. This study was designed to elaborate a percentile-based hour specific total serum bilirubin (TSB nomogram and to assess its ability to predict the absence of risk for subsequent non physiologic severe hyperbilirubinaemia before discharge. Methods A percentile-based hour-specific nomogram for TSB values was performed using TSB data of 1708 healthy full term neonates. The nomogram's predictive ability was then prospectively assessed in five different first level neonatal units, using a single TSB value determined before discharge. Results The 75 th percentile of hour specific TSB nomogram allows to predict newborn babies without significant hyperbilirubinemia only after the first 72 hours of life. In the first 48 hours of life the observation of false negative results did not permit a safe discharge from the hospital. Conclusion The hour-specific TSB nomogram is able to predict all neonates without risk of non physiologic hyperbilirubinemia only after 48 to 72 hours of life. The combination of TSB determination and risk factors for hyperbilirubinemia could facilitate a safe discharge from the hospital and a targeted intervention and follow-up.

  2. Enhancement of the performances of a single concentric glucose/O{sub 2} biofuel cell by combination of bilirubin oxidase/Nafion cathode and Au-Pt anode

    Energy Technology Data Exchange (ETDEWEB)

    Habrioux, A.; Servat, K.; Kokoh, K.B. [LACCO ' ' Equipe Electrocatalyse' ' , UMR 6503 CNRS-Universite de Poitiers, 40 Avenue du Recteur Pineau, 86022 Poitiers (France); Tingry, S. [Institut Europeen des Membranes, UMR 5635, ENSCM-UMII-CNRS Place Eugene Bataillon, CC 047, 34095 Montpellier, Cedex 5 (France)

    2009-01-15

    This work deals with a novel preparation method of bilirubin oxidase/2,2'-azinobis-3-ethylbenzothiazoline-6-sulfonic acid electrode. The enzyme and its mediator were adsorbed on carbon Vulcan XC-72R before their immobilization into a Nafion {sup registered} matrix. Promising results were obtained when this biocathode was associated with Au{sub 70}Pt{sub 30} nanoparticles as anode in a single concentric glucose/O{sub 2} biofuel cell (BFC). The latter BFC delivered at 37 C a power density of 90 {mu}W cm{sup -2} for a cell voltage of 0.4 V in phosphate buffer (pH 7.4) containing 0.01 M glucose. Moreover, the electrical performances were increased with the concentration of glucose by generating up to 190 {mu}W cm{sup -2} for a cell voltage of 0.52 V when the concentration of the renewable fuel reached 0.7 M. (author)

  3. 吸附于银胶颗粒表面的胆红素及胆绿素分子吸附取向研究%The Study of Orientations of Bilirubin and Biliverdin by Surface-enhanced Raman Spectroscopy

    Institute of Scientific and Technical Information of China (English)

    胡军; 方清; 盛蓉生; 徐知三; 曾云鹗

    2001-01-01

    胆红素、胆绿素作为重要的生物小分子被广泛研究。本文采用表面增强拉曼光谱技术获得了胆红素和胆绿素分子吸附于银胶颗粒表面的拉曼光谱。通过对其谱带的指认分析,表明胆红素形成了三对内氢键,并以其两个吡咯亚甲基酮环沿银胶颗粒表面切向方向镶嵌在银胶颗粒上,而胆绿素则以顺式-顺式-顺式构型平躺吸附于银胶颗粒表面。%The surface-enhanced Raman spectra of bilirubin and biliverdin were obtained.By the bands analysis of the spectra,the orientation of bilirubin and biliverdin on the surface of silver colloid was discussed.In such case,the bilirubin was adsorbed on the silver colloid particle with the two planar pyrromethenone groups intercalated into the globe silver colloid particle,however,the biliverdin might lie flat on the surface of silver colloid with syn-synsyn conformation.

  4. SERUM TOTAL BILIRUBIN, NOT CHOLELITHIASIS, IS INFLUENCED BY UGT1A1 POLYMORPHISM, ALPHA THALASSEMIA AND S GENOTYPE: FIRST REPORT ON COMPARISON BETWEEN ARAB-INDIAN AND AFRICAN S GENES

    Directory of Open Access Journals (Sweden)

    Said Y ALkindi

    2015-10-01

    Full Text Available Background: We explored the potential relationship between steady state serum bilirubin levels and the incidence of cholelithiasis in the context of UGT1A1 gene A(TAnTAA promoter polymorphism in Omani sickle cell anemia (SCA patients, homozygotes for African (Benin and Bantu and Arab-Indian bS haplotypes, but sharing the same microgeographical environment and comparable life style factors.   Methods: 136 SCA patients were retrospectively studied in whom imaging data including abdominal CT scan, MRI or Ultrasonography was routinely available. Available data on the mean steady state hematological/biochemical parameters (n=136,  bs haplotypes(n=136, a globin gene status (n=105 and UGT1A1 genotypes(n=133 were reviewed from the respective medical records.   Results: The mean serum total bilirubin level was significantly higher in the homozygous UGT1A1(AT7 group as compared to  UGT1A1(AT6 group. Strikingly, cholelithiasis was not influenced by age, gender, alpha globin genotype or bS haplotypes in this SCA cohort.   Conclusion: As observed in other population groups, the UGT1A1 (AT7 homozygosity was significantly associated with raised serum total bilirubin level, but the prevalence of gallstones in the Omani SCA patients was not associated with a thalassaemia, UGT1A1 polymorphism, or bs haplotypes.

  5. Fabrication of high performance bioanode based on fruitful association of dendrimer and carbon nanotube used for design O2/glucose membrane-less biofuel cell with improved bilirubine oxidase biocathode.

    Science.gov (United States)

    Korani, Aazam; Salimi, Abdollah

    2013-12-15

    In this study, the preparation of an integrated modified electrode based on the covalent attachment of glucose dehydrogenase (GDH) enzyme and safranin O to amine-derivative multiwalled carbon nanotubes (MWCNTs-NH2) modified glassy carbon (GC) electrode using G2.5-carboxylated PAMAM dendrimer (Den) as linking agent is reported. The obtained results indicated that the proposed system has effective bioelectrocatalytic activity toward glucose oxidation at 100 mV with onset potential of -130 mV (vs. Ag/AgCl). The performance of the prepared hybrid system of GC/MWCNTs-NH2/Den/GDH/Safranin as anode in a membraneless enzyme-based glucose/O2 biofuel cell is further evaluated. The biocathode in this system was composed of bilirubin oxidase (BOX) enzyme immobilized onto a bilirubin modified carbon nanotube GC electrode. Immobilized BOX onto CNTs/bilirubin not only show direct electron transfer but also it has excellent electrocatalytic activity toward oxygen reduction at a positive potential of 610 mV. The open circuit voltage of the cell was 590 mV. The maximum current density was 0.5 mA cm(-2), while maximum power density of 108 μW cm(-2) was achieved at voltage of 330 mV. The immobilized enzymes in anode and cathode are very stable and output power of the BFC is approximately constant after 12 h continues operation.

  6. On the impact of oxytocin on high neonatal bilirubin levels, clinical studies%催产素对新生儿高胆红素血症影响的临床研究

    Institute of Scientific and Technical Information of China (English)

    罗嫚丽

    2016-01-01

    Objective to explore the application of oxytocin during labor and maternal high different dose of oxytocin on neonatal bilirubin hematic disease, provide guidance for clinical. Methods to select 339 full-term healthy newborns born to our hospital patients as the research object, according to whether or not to use in the process of childbirth oxytocin is divided into two groups, 223 cases of patients who did not use the oxytocin neonatal as control group, and use of oxytocin, 116 cases of neonatal as observation group, and all 3, 5, and 7 days after birth detect neonatal bilirubin, was born in 7 d after record high neonatal bilirubin levels and the incidence of asphyxia. Results in the control group after the birth of blood bilirubin value ex-ists significant difference, and after the birth of 3 d, 5 d after birth no difference, after the birth of the 7 d significantly reduced, the observation group after the birth of blood bilirubin value exists significant difference, and after the birth of 3 d, 5 d after birth there is significant difference, after the birth of the 7 d significantly reduced, between the two groups in 3 d, 5 d, 7 d after birth blood bilirubin value exists significant difference; In 3 d after birth, the different dose of oxytocin blood bilirubin value differ-ences between groups, 5 IU group and 10 IU group is significantly higher than 1.5 IU group and 2.5 IU group, 5 d and 7 d after birth, blood bilirubin values between different dose of oxytocin group differences, with the increase of dosage, blood bilirubin values significantly increased; Newborn on the incidence of high blood bilirubin, control group was 21.97% (49/223), the ob-servation group of newborns was 37.93% (44/116), there were significant differences; Newborn on the incidence of asphyxia, control group was 4.04% (9/223), the observation group of newborns was 14.66% (17/116), there were significant differences.Conclusion pregnant women in childbirth using oxytocin but high neonatal

  7. Review: Bilirubin pKa studies; new models and theories indicate high pKa values in water, dimethylformamide and DMSO

    Directory of Open Access Journals (Sweden)

    Ostrow J

    2010-03-01

    Full Text Available Abstract Background Correct aqueous pKa values of unconjugated bilirubin (UCB, a poorly-soluble, unstable substance, are essential for understanding its functions. Our prior solvent partition studies, of unlabeled and [14C] UCB, indicated pKa values above 8.0. These high values were attributed to effects of internal H-bonding in UCB. Many earlier and subsequent studies have reported lower pKa values, some even below 5.0, which are often used to describe the behavior of UCB. We here review 18 published studies that assessed aqueous pKa values of UCB, critically evaluating their methodologies in relation to essential preconditions for valid pKa measurements (short-duration experiments with purified UCB below saturation and accounting for self-association of UCB. Results These re-assessments identified major deficiencies that invalidate the results of all but our partition studies. New theoretical modeling of UCB titrations shows remarkable, unexpected effects of self-association, yielding falsely low pKa estimates, and provides some rationalization of the titration anomalies. The titration behavior reported for a soluble thioether conjugate of UCB at high aqueous concentrations is shown to be highly anomalous. Theoretical re-interpretations of data in DMSO and dimethylformamide show that those indirectly-derived aqueous pKa values are unacceptable, and indicate new, high average pKa values for UCB in non-aqueous media (>11 in DMSO and, probably, >10 in dimethylformamide. Conclusions No reliable aqueous pKa values of UCB are available for comparison with our partition-derived results. A companion paper shows that only the high pKa values can explain the pH-dependence of UCB binding to phospholipids, cyclodextrins, and alkyl-glycoside and bile salt micelles.

  8. High baseline bilirubin and low albumin predict liver decompensation and serious adverse events in HCV-infected patients treated with sofosbuvir-containing regimens.

    Science.gov (United States)

    Perumalswami, P V; Patel, N; Bichoupan, K; Ku, L; Yalamanchili, R; Harty, A; Motamed, D; Khaitova, V; Chang, C; Grewal, P; Liu, L; Schiano, T D; Woodward, M; Dieterich, D T; Branch, A D

    2016-09-01

    To conduct surveillance and determine the safety profile of new hepatitis C virus treatments in real-world clinical practice. Hepatic decompensation and other serious adverse events were investigated in an observational cohort study of 511 patients treated with regimens containing sofosbuvir, December 2013-June 2014. Among 499 previously stable patients (no history of hepatic decompensation during the previous 12 months), a nested case-control study was performed to identify predictors of decompensation/serious adverse event. Cases and controls were matched 1:5 based on treatment regimen and duration. Matched conditional logistic regression was used for analysis. Providers scored the likelihood that events were treatment-related (scale = 0-4). The cumulative incidence of decompensation/events was 6.4% for the total cohort. Among 499 previously stable patients, the incidence of decompensation/events was 4.5%; the mortality rate was 0.6%. Sixteen of the 499 experienced one or more serious complications considered to be at least potentially treatment-related, and the sustained virological response rate was 7/16 (44%). Two cases, both on sofosbuvir/simeprevir (without interferon or ribavirin), had complications consistent with autoimmune events (score 3, 'likely treatment-related'), and one experienced a flare of autoimmune hepatitis. Compared to controls, cases had higher baseline median model for end-stage liver disease scores (14 vs 8, P < 0.01). Decompensation/events was independently associated with lower baseline albumin (OR = 0.12/g/dL, P = 0.01) and higher total bilirubin (OR = 4.31/mg/dL, P = 0.01). Reduced hepatic function at baseline increased the risk of liver decompensation/events. PMID:26989855

  9. Membraneless enzymatic ethanol/O2 fuel cell: Transitioning from an air-breathing Pt-based cathode to a bilirubin oxidase-based biocathode

    Science.gov (United States)

    Aquino Neto, Sidney; Milton, Ross D.; Hickey, David P.; De Andrade, Adalgisa R.; Minteer, Shelley D.

    2016-08-01

    The bioelectrooxidation of ethanol was investigated in a fully enzymatic membraneless ethanol/O2 biofuel cell assembly using hybrid bioanodes containing multi-walled carbon nanotube (MWCNT)-decorated gold metallic nanoparticles with either a pyrroloquinoline quinone (PQQ)-dependent alcohol dehydrogenase (ADH) enzyme or a nicotinamide adenine dinucleotide (NAD+)-dependent ADH enzyme. The biofuel cell anode was prepared with the PQQ-dependent enzyme and designed using either a direct electron transfer (DET) architecture or via a mediated electron transfer (MET) configuration through a redox polymer, 1,1‧-dimethylferrocene-modified linear polyethyleneimine (FcMe2-C3-LPEI). In the case of the bioanode containing the NAD+-dependent enzyme, only the mediated electron transfer mechanism was employed using an electropolymerized methylene green film to regenerate the NAD+ cofactor. Regardless of the enzyme being employed at the anode, a bilirubin oxidase-based biocathode prepared within a DET architecture afforded efficient electrocatalytic oxygen reduction in an ethanol/O2 biofuel cell. The power curves showed that DET-based bioanodes via the PQQ-dependent ADH still lack high current densities, whereas the MET architecture furnished maximum power density values as high as 226 ± 21 μW cm-2. Considering the complete membraneless enzymatic biofuel cell with the NAD+-dependent ADH-based bioanode, power densities as high as 111 ± 14 μW cm-2 were obtained. This shows the advantage of PQQ-dependent ADH for membraneless ethanol/O2 biofuel cell applications.

  10. Combining serum cystatin C with total bilirubin improves short-term mortality prediction in patients with HBV-related acute-on-chronic liver failure.

    Directory of Open Access Journals (Sweden)

    Zhihong Wan

    Full Text Available BACKGROUND & AIMS: HBV-related acute-on-chronic liver failure (HBV-ACLF is a severe liver disease which results in a high mortality in China. To early predict the prognosis of the patients may prevent the complications and improve the survival. This study was aimed to develop a new prognostic index to estimate the survival related to HBV-ACLF. METHODS: Consecutive patients with HBV-ACLF were included in a prospective observational study. Serum Cystatin C concentrations were measured by using the particle-enhanced immunonephelometry assay. All of the patients were followed for at least 3 months. Cox regression analysis was carried out to identify which factors were predictive of mortality. The area under the receiver operating characteristic curve (AUC was used to evaluate the efficacy of the variates for early predicting mortality. RESULTS: Seventy-two patients with HBV-ACLF were recruited between January 2012 and January 2013. Thirty patients died (41.7% during 3-months followed up. Cox multivariate regression analysis identified serum cystatin C (CysC and total bilirubin (TBil were independent factors significantly (P < 0.01 associated with survival. Our results further showed that new prognostic index (PI combining serum CysC with TBil was a good indicator for predicting the mortality of patients with HBV-ACLF. Specifically, the PI had a higher accuracy than the CTP, MELD, or MELD-Na scoring for early prediction short-term survival of HBV-ACLF patients with normal levels of serum creatinine (Cr. The survival rate in low risk group (PI < 3.91 was 94.3%, which was markedly higher than those in the high-risk group (PI ≥ 3.91 (17.4%, P < 0.001. CONCLUSION: We developed a new prognostic index combining serum CysC with TBil which early predicted the short-term mortality of HBV-ACLF patients.

  11. The relationship between transcutaneous bilirubin changes after surgery and the prognosis in biliary atresia%测定胆道闭锁术后皮肤胆红素动态变化与预后的关系

    Institute of Scientific and Technical Information of China (English)

    王文晓; 李龙; 张金山; 刘树立; 谢华伟; 明安晓; 崔龙; 周峻

    2011-01-01

    Objective To study the relationship between the post-op transcutaneous bilirubin changes after Surgery and the prognosis in children with biliary atresia. Methods Between July 2009to December 2009,52 children( 19 males and 33 female, age: 36 d~304 d, the mean age 83d, including 5cholestasis and 47 biliary atresia)with jaundice and 59 non-jaundiced children's (28 males and 31 females,aged 26 d~200 d and the mean age 119 d) were recruited for the study. The transcutaneous bilirubin and total serum bilirubin of children with jaundice and non-jaundice were measured at the same time. Twenty-three children with biliary atresia (8 males and 15 females, aged 36 d~ 127 d and the mean age 63 d) underwent Kasai operation. The children were divided into good or poor prognosis groups according to the serum bilirubin levels of 20 μmol/L three months after operation. Measurements were compared between the two groups during hospital stay. Results Linear regression oftranscutaneous bilirubin (x) correlated with that of serum bilirubin (y) (y = 0. 945x - 46. 273, P<0. 05). The 95% confidence interval of transcutaneous bilirubin in normal children was 33. 14~96. 14μmol/L. The transcutaneous bilirubin of children with good prognosis was significantly lower than that of children with poor prognosis on postoperative day 11 ( 159 μmol/L vs 205 μmol/L,P<0. 05) and 12(151 μmol/L vs 210μmol/L,P<0. 05). Postoperative average daily decline of transcutaneous bilirubin in children with good prognosis was faster (5. 04 μmol/L vs 2. 33 μmol/L, P<0. 05). Conclusions Transcutaneous bilirubin measurement is a safe and reliable method of monitoring the decline of jaundice of children with biliary atresia.%目的 初步探讨胆道闭锁患儿术后测定皮肤胆红素动态变化与黄疸消退及预后的关系.方法 2009年7月至12月,收治黄疸患儿52例,男19例,女33例,年龄36 d~304 d,平均年龄83 d,包括胆汁淤积5例,胆道闭锁47例,采血测血清胆

  12. Application value of umbilical cord blood bilirubin levels in predicting neonatal jaundice%脐血胆红素水平在预测新生儿黄疸中的应用价值

    Institute of Scientific and Technical Information of China (English)

    李莎

    2015-01-01

    目的:探讨脐血胆红素水平在预测新生儿黄疸中的应用价值。方法选取2013年1月-2015年1月医院足月新生儿132例。于出生时、出生后24、48、72h 测定脐血胆红素水平,并按浓度分为﹤30μmol/L、≥30μmol/L、≥36μmol/L、≥42μmol/L 4组。所有新生儿均于出生时、生后24、48、72h测定经皮胆红素(测定新生儿前额及前胸2个部位,读数取平均值后记录),比较高胆红素症与非高胆红素血症组的脐血胆红素水平及不同脐血胆红素水平组高胆红素症发生率。结果新生儿脐血胆红素﹤30μmol/L组黄疸发生率为16.7%明显低于≥30μmol/L组的34.2%、≥36μmol/L组的73.3%及≥45μmol/L组的85.0%,比较差异均有统计学意义( P﹤0.05)。非高胆红素组脐血胆红素、出生后24、48、72h经皮胆红素指数均低于高胆红素组,比较差异均有统计学意义( P﹤0.05)。结论高胆红素血症新生儿的脐血胆红素相应升高,测定脐血胆红素对预测新生儿黄疸有实际的应用价值。%Objective To eXplore the application Value of umbilical cord blood bilirubin leVels in predicting neonatal jaundice. Methods Select 132 cases of term newborns. The leVel of cord blood bilirubin was measured at birth,and at 24 hours,48 hours and 72 hours after birth,according to the concentration diVided into( ﹤30μmol/L)group,(≥30μmol/L) group,(≥36μmol/L)group and(≥42μmol/L)group. The leVel of transcutaneous bilirubinometer was also measured( De-termination of the forehead and chest in two parts,taking the aVerage Value)at birth,and at 24 hours,48 hours and 72 hours after birth. comparison high bilirubin group and non hyperbilirubinemia group cord blood bilirubin leVel,and the incidence of high bilirubin in different leVels of serum bilirubin. Results Neonatal umbilical cord blood bilirubin﹤30μmol/L jaundice in-cidence was 16. 7%μmol/L group was obViously lower acuity 30

  13. 血清胆红素与尿酸检验在冠心病患者诊断中的价值分析%Value of Serum Bilirubin and Uric Acid Test in the Diagnosis of Patients With Coronary Heart Disease

    Institute of Scientific and Technical Information of China (English)

    代劲

    2015-01-01

    Objective Analysis of serum bilirubin and uric acid value to the diagnosis of coronary heart disease.MethodsSelect 80 cases of coronary heart disease patients as observation group,in the same period 80 cases of healthy subjects as control group,serum bilirubin and uric acid in test,compare test results.Results Observation group serum bilirubin level is lower than the control group,uric acid level is higher than that of control group(P<0.05); Observation group of total bilirubin,combination of bilirubin,the bilirubin decreased as the Gensini score,uric acid wil increase (P<0.05). Conclusion Inspection of serum bilirubin and uric acid levels to provide a strong basis for the diagnosis and treatment of coronary heart disease.%目的:分析血清胆红素与尿酸对冠心病的诊断价值。方法选取80例冠心病患者为观察组,同期80例健康者为对照组,均行血清胆红素和尿酸检验,比较检测结果。结果观察组血清胆红素水平低于对照组,尿酸水平则高于对照组(P<0.05);观察组总胆红素、结合胆红素、非结合胆红素随着Gensini积分的增加而减少,尿酸则会增加(P<0.05)。结论检验血清胆红素和尿酸水平可为诊疗冠心病提供有力依据。

  14. Analysis and Treatment of Related Risk Factors of Neonatal Bilirubin Encephalopathy%新生儿胆红素脑病相关危险因素的分析与处理

    Institute of Scientific and Technical Information of China (English)

    张超雁

    2016-01-01

    目的:进一步探索新生儿胆红素脑病的相关危险因素及处理方法。方法对我院新生儿科自2008年6月~2015年8月收治的76例新生儿胆红素脑病患儿病历进行回顾性分析。结果患儿自身因素造成的新生儿胆红素性脑病前3位的危险因素包括感染因素、围产期因素和G-6-PD缺乏症,所占比率分别达到了48.68%、32.89%和10.53%。患儿自身以外因素造成新生儿胆红素性脑病最主要的因素是产妇产后住院时间不足3 d、在家自行用药和未按医生要求进行及时随访,所占比率分别为47.36%、38.16%、51.32%。结论临床上造成新生儿胆红素性脑病的危险因素是多方面的,加强围产期保健工作、做好患儿生后护理、及时发现并治疗新生儿黄疸是防止新生儿胆红素性脑病发生的关键。%Objective To explore the related risk factors and treatment methods of neonatal bilirubin encephalopathy.Methods In our new pediatric since June 2008 to August 2015 treated 76 cases of neonatal bilirubin encephalopathy patients medical records were retrospectively analyzed.ResultsIts own factors of neonatal bilirubin encephalopathy in children with risk factors for the three factors including infection,perinatal factors and G-6-PD deficiency,proportion reached 48.68%,32.89% and 48.68% respectively. The outside factors of the patients is the most important factors of neonatal bilirubin encephalopathy maternal postpartum hospitalization time less than 3 days,take medicines at home and not timely folow-up required by doctors,proportion of 47.36%,38.16% and 51.32% respectively.Conclusion Clinical risk factors of the neonatal bilirubin encephalopathy is various, strengthening perinatal health care work,completes the child postpartum nursing,timely detection and timely treatment of neonatal jaundice is the key to prevention of neonatal bilirubin encephalopathy.

  15. Study on extraction of chenodeoxycholic acid and bilirubin fromgoose gallbladder%鹅胆汁中鹅脱氧胆酸和胆红素提取工艺研究

    Institute of Scientific and Technical Information of China (English)

    贾霖; 黄国清; 王宝维; 肖军霞

    2012-01-01

    Both chenodeoxycholic acid and bilirubin are the main active components of goose gallbladder.The chenodeoxycholic acid and bilirubin were isolated and extracted from the goose gallbladder in the same time through the steps of saponification,neutralization,delamination and so on.The effect of saponification temperature,time and sodium hydroxide concentration were determined through the single factor and orthogonal tests.The results showed that the optimum conditions were as follows:saponification temperature 90℃,1h,sodium hydroxide concentration 8%.Under these conditions,the yield of chenodeoxycholic acid reached 0.9mg/g,the yield of bilirubin reached 0.46mg/g.%鹅脱氧胆酸(CDCA)和胆红素均是鹅胆中的主要活性成分。将鹅胆通过皂化、中和、分层等步骤,同时从中分离提取出鹅脱氧胆酸和胆红素。通过单因素实验和正交实验确定了皂化温度、皂化时间和NaOH浓度的最佳条件。实验结果表明,当皂化温度为90℃,皂化时间为1h,NaOH浓度为8%时,CDCA的提取量为0.9mg/g,胆红素的提取量为0.46mg/g。

  16. Self-assembly of aqueous bilirubin ditaurate, a natural conjugated bile pigment, to contraposing enantiomeric dimers and M(-) and P(+) tetramers and their selective hydrophilic disaggregation by monomers and micelles of bile salts.

    Science.gov (United States)

    Neubrand, Michael W; Carey, Martin C; Laue, Thomas M

    2015-02-24

    The solution behavior of bilirubin ditaurate (BDT), the first naturally occurring conjugated bile pigment to be physically and chemically characterized, was assessed in aqueous solution and in monomeric and micellar solutions of common taurine-conjugated bile salts (BS). Analytical ultracentrifugation revealed that BDT self-associates in monomer-dimer equilibria between 1 and 500 μM, forming limiting tetramers at low millimolar concentrations. Self-association was enthalpically driven with ΔG values of ≈5 kcal/mol, suggesting strong hydrophobic interactions. Added NaCl and decreases in temperature shifted the oligomerization to lower BDT concentrations. On the basis of circular dichroism spectra and the limiting size of the self-aggregates, we infer that the tetramers are composed of 2P(+) and 2M(-) enantiomeric BDT pairs in "ridge-tile" conformations interacting in a "double-bookend" structure. With added monomeric BS, blue shifts in the UV-vis spectra and tight isosbestic points revealed that BDT/BS heterodimers form, followed by BDT "decorating" BS micelles mostly via hydrophilic interactions. Conformational enantiomerism, fluorescence intensities, and anisotropy, as well as resistance of the hybrid particles to disaggregation in 6 M urea, suggested that two or three hydrogen-bonding sites bound BDT monomers to the hydroxyl groups of BS, possibly via pyrrole-π-orbital-OH interactions. BDT stabilized these interactions by enveloping the BS in its "ridge-tile" pincers with variable strain that maximized van der Waals interactions. Possibly because the BDT molecule becomes highly strained with BS subtending a 7β-hydroxyl group, BDT became totally resistant to oxidation in air. This work predicts that, because of BS dissolution of the BDT self-aggregates, BS/bilirubin hybrid particles, which are stabilized hydrophilically, are likely to be the dominant mode of transport for all conjugated bilirubins in bile. PMID:25671490

  17. Self-assembly of aqueous bilirubin ditaurate, a natural conjugated bile pigment, to contraposing enantiomeric dimers and M(-) and P(+) tetramers and their selective hydrophilic disaggregation by monomers and micelles of bile salts.

    Science.gov (United States)

    Neubrand, Michael W; Carey, Martin C; Laue, Thomas M

    2015-02-24

    The solution behavior of bilirubin ditaurate (BDT), the first naturally occurring conjugated bile pigment to be physically and chemically characterized, was assessed in aqueous solution and in monomeric and micellar solutions of common taurine-conjugated bile salts (BS). Analytical ultracentrifugation revealed that BDT self-associates in monomer-dimer equilibria between 1 and 500 μM, forming limiting tetramers at low millimolar concentrations. Self-association was enthalpically driven with ΔG values of ≈5 kcal/mol, suggesting strong hydrophobic interactions. Added NaCl and decreases in temperature shifted the oligomerization to lower BDT concentrations. On the basis of circular dichroism spectra and the limiting size of the self-aggregates, we infer that the tetramers are composed of 2P(+) and 2M(-) enantiomeric BDT pairs in "ridge-tile" conformations interacting in a "double-bookend" structure. With added monomeric BS, blue shifts in the UV-vis spectra and tight isosbestic points revealed that BDT/BS heterodimers form, followed by BDT "decorating" BS micelles mostly via hydrophilic interactions. Conformational enantiomerism, fluorescence intensities, and anisotropy, as well as resistance of the hybrid particles to disaggregation in 6 M urea, suggested that two or three hydrogen-bonding sites bound BDT monomers to the hydroxyl groups of BS, possibly via pyrrole-π-orbital-OH interactions. BDT stabilized these interactions by enveloping the BS in its "ridge-tile" pincers with variable strain that maximized van der Waals interactions. Possibly because the BDT molecule becomes highly strained with BS subtending a 7β-hydroxyl group, BDT became totally resistant to oxidation in air. This work predicts that, because of BS dissolution of the BDT self-aggregates, BS/bilirubin hybrid particles, which are stabilized hydrophilically, are likely to be the dominant mode of transport for all conjugated bilirubins in bile.

  18. Composição do liquido cefalorrraqueano do recem-nascido normal: citometria, proteinorraquia e bilirrubinorraquia em 79 casos Cerebrospinal fluid composition of normal newborn children: cytology, proteins, and bilirubin

    Directory of Open Access Journals (Sweden)

    Berta R. Luz

    1975-09-01

    Full Text Available Estudo do LCR de recém-nascidos a termo e de parto normal, sem intercorrências perinatais, para verificar o quanto a xantocromia é devida à bilirrubinorraquia. Foi verificado que a bilirrubinorraquia é constante na primeira semana de vida e que sua concentração: não guarda relação com a concentração proteica total do LCR e/ou com os níveis de bilirrubina no soro; não sofre influência do número de hemácias e/ou de leucócitos presente na amostra. Os valores encontrados no LCR quanto ao número de leucócitos e de hemácias e às concentrações de proteínas totais e de bilirrubina são analisados na caracterização do LCR do recém-nascido normal na primeira semana de vida.The study was made in order to verify if the bilirubin content of the cerebrospinal fluid (CSF is constant during the first week of life, and their relations to: the concentrations of total proteins in the CSF and bilirubin in the blood serum; the red blood cells and leucocytes present in the CSF sample. The study was made in 79 normal newborns without perinatal problems or obstetrical abnormalities. The gestational ages were stablished through maternal anamnesis and the clinical evaluation of the newborn was made according to the patterns established by Usher & col., Lubchenko & col. and Lubchenko. All the pregnancies were over 37 weeks. The vital conditions of the newborn immediately after the delivery were calculated according to the patterns proposed by Apgar and Apgar & James. The first complete clinical examination was made in the first twelve hours of life. The cranial sizes were situated within the limits accepted as normal. The deliveries were head-first (only two were breech presentation. The cry was immediate after birth, the breathing well established in the first minute of life and the cut of the umbelical cord was made after the first respiratory movement. The deliveries were made in delivery rooms or surgical rooms always assisted by an

  19. Effect of bilirubin on the function of T lymphocytes of premature infants and the mechanism%胆红素对早产儿T淋巴细胞功能的影响及相关机制的研究

    Institute of Scientific and Technical Information of China (English)

    马琳; 江莲

    2012-01-01

    目的:探讨不同血清胆红素水平对早产儿T淋巴细胞功能的影响.方法:应用流式细胞仪法测定不同胎龄、不同胆红素水平下CD4+、CD8+、白细胞介素-4(Interleukin-4、IL-4)、肿瘤坏死因子-γ(Tumor necrosis factor-γ、IFN-v)、Fas基因表达.结果:①胎龄≥32周早产儿的CD4+和CD8+表达量>胎龄<32周早产儿,差异有统计学意义(P<0.05).②不同胆红素浓度对早产儿T淋巴细胞功能的影响:胆红素153.9~220.6 μmol/L组和胆红素>220,6 μmol/L组早产儿CD4+的表达水平均明显低于无黄疸组和胆红素<153.9 μmol/L组(P<0.05);胆红素>220.6 μmol/L组早产儿CD8+的表达水平低于无黄疸组、胆红素<153.9 μmol/L组和胆红素153.9-220.6 μmol/L组(P<0.05).IL-4的表达量与4组比较无差异(P>0.05).IFN-γ的表达量于胆红素153.9~220.6 μmol/L组和胆红素>220.6 μmol/L组均<无黄疸组和胆红素<153.9 μmol/L组(P<0.05).Fas基因的表达量于胆红素153.9~220.6 μmol/L组和胆红素>220.6 μmol/L组均高于无黄疸组和胆红素< 153.9 μmoL/L组(P<0.05).结论:①胎龄是影响早产儿T淋巴细胞功能的重要因素之一,胎龄越小免疫功能越低.②黄疸对早产儿T淋巴细胞功能有显著抑制作用,随胆红素浓度的增加抑制作用越显著,同时Fas基因的表达量逐渐增高,提示此种抑制作用与淋巴细胞凋亡增多有关.%Objective: To explore the effects of different levels of serum bilirubin on the function of T lymphocytes of premature infants. Methods: Flow cytometry was used to detect the expression levels of CD4+ , CD8+, interleukin -4, tumor necrosis factor-γ, and Fas gene among the premature infants of different fetal ages and bilirubin levels. Results: The expression levels of CD4 + and CD8 + in premature infants of fetal age ≥32 weeks were significantly higher than those in premature infants of fetal age 220.6 μmol/L group were significantly lower than

  20. Analysis the Risk Factor of Bilirubin Encephalopathy of Neonatal Hyperbilirubinemia%新生儿高胆红素血症胆红素脑病的危险性因素分析

    Institute of Scientific and Technical Information of China (English)

    陈思远; 覃睿; 黄国坚; 叶军; 陈媚; 周江; 周转智

    2015-01-01

    Objective Analysis the risk factor of bilirubin encephalopathy of Neonatal .And provides the measurement to decrease hy-perbilirubinemia bilirubin encephalopathy incidence.Methods Retrospective analysis 209 neonatal hyperbilirubinemia patients′clinical data.Definite bind the score 7-9 points as acute bilirubin encephalopathy (ABE).the children ABE as the observation group (n=40 pa-tients), the rest patients as the control group (n=169 patients).Related factors that may affect the incidence of hyperbilirubinemia ABE were univariate and multivariate Logistic regression analysis, the Related factors include gender, neonatal gestational age, birth weight, mode of delivery, fetal membranes early break, feeding patterns, gestational diabetes, gestational hypertension, asphyxia or fetal distress,the peak total bilirubin, jaundice family history, RH hemolytic disease and ABO hemolytic disease.Results It was found that birth weight (OR=3.739,95%CI:1.240 -11.880), total bilirubin peak (OR=6.475,95%CI:1.724 -17.419), RH hemolytic disease(OR=11.473,95%CI:2.708-33.697)and ABO hemolytic disease (OR=9.143,95%CI:2.492-28.513)were the risk factors for neonatal hy-perbilirubinemia bilirubin encephalopathy after multivariate Logistic regression analysis, P<0.05.Conclusion Birth weight, total biliru-bin peak, RH hemolytic disease and ABO hemolytic disease are related to bilirubin encephalopathy, clinicians should strengthen Screening and treat the very low birth weight, high total bilirubin peak, accompanied by RH hemolytic disease and ABO hemolytic patients.%目的:分析新生儿高胆红素血症胆红素脑病的危险性因素,为预防高胆红素血症胆红素脑病提供思路。方法回顾性分析我院收治的209例新生儿高胆红素血症患儿临床资料,将胆红素脑病致使神经功能系统障碍( bilirubin-induced neurologic dysfunction,Bind)评分为7~9分的患儿定义为急性胆红素脑病(ABE)患儿

  1. Relationship between Serum Bilirubin and LDL - C Levels in Patients with Coronary Heart Disease%冠心病患者血清胆红素与低密度脂蛋白胆固醇水平的关系研究

    Institute of Scientific and Technical Information of China (English)

    张慧; 张玉顺

    2015-01-01

    目的:探讨冠心病患者血清胆红素与低密度脂蛋白胆固醇( LDL-C)水平的关系。方法选择2013年9月—2014年9月西安交通大学医学院第一附属医院收治的冠心病患者55例作为观察组,另选择同期在西安交通大学医学院第一附属医院进行体检的健康者60例作为对照组。检测两组受检者血清总胆红素、直接胆红素、间接胆红素及LDL-C水平,并分析冠心病患者血清胆红素与LDL-C水平的关系。结果观察组患者血清总胆红素、直接胆红素及间接胆红素水平低于对照组,LDL-C水平高于对照组( P<0.05)。观察组患者血清总胆红素、直接胆红素、间接胆红素水平与LDL-C水平均呈负相关(r值分别为-0.72、-0.31、-0.41,P<0.05)。结论冠心病患者血清胆红素与LDL-C水平均出现异常改变,且血清LDL-C水平随胆红素水平上升而下降。%Objective To explore the relationship between serum bilirubin and LDL - C levels in patients with coronary heart disease. Methods From September 2013 to September 2014,55 patients with coronary heart disease were selected as observation groups in the First Affiliated Hospital of Xi′an Jiaotong University Medicine School,and 60 healthy cases were selected as control group at the same time. Serum levels total bilirubin,direct bilirubin,indirect bilirubin and LDL-C of the two groups were detected,and the relationship between serum bilirubin and LDL-C levels was analyzed. Results Serum levels total bilirubin,direct bilirubin,indirect bilirubin of observation group were lower than those of control group,that of LDL-C was higher than that of control group ( P <0. 05 ). Serum levels total bilirubin, direct bilirubin, indirect bilirubin of observation group was negatively correlated with serum LDL - C level,respectively( r = -0. 72,-0. 31,-0. 41,P <0. 05). Conclusion The serum bilirubin and LDL-C levels of patients with coronary heart disease are abnormal

  2. Relationship between serum bilirubin, fibrinogen and diabetic nephropathy in patients with type 2 diabetes mellitus%2型糖尿病患者血清胆红素、纤维蛋白原与糖尿病肾病的相关性研究

    Institute of Scientific and Technical Information of China (English)

    张玉海; 刘海蔚; 陈道雄; 高勇义

    2015-01-01

    目的:探讨2型糖尿病(T2DM)患者血清胆红素及纤维蛋白原与糖尿病肾病(DN)发生的关系。方法629例T2DM患者,按照24 h尿白蛋白定量分为正常尿白蛋白组(A组)474例,微量尿白蛋白组(B组)100例,临床尿白蛋白组(C组)55例。并以146例正常成人作为对照组,观察各组之间血清胆红素和纤维蛋白原的差异,探讨胆红素及纤维蛋白原与DN相关性。结果 T2DM患者血清总胆红素、直接胆红素和间接胆红素水平均低于正常对照组(P<0.05),纤维蛋白原高于对照组(P<0.05)。C组总胆红素、间接胆红素、直接胆红素均较A组及B组降低(P<0.05),C组纤维蛋白原较正常A组及B组升高(P<0.05),B组总胆红素、间接胆红素、直接胆红素均较A组下降(P<0.05),B组纤维蛋白原较A组升高(P<0.05),将尿白蛋白与血清胆红素水平及纤维蛋白原作相关性分析,结果显示尿白蛋白与总胆红素、直接胆红素、间接胆红素呈负相关,相关系数分别为r=-0.191,P<0.05;r=-0.299,P<0.05;r=-0.184,P<0.05。尿白蛋白与纤维蛋白原呈正相关,相关系数为r=0.33,P<0.05。总胆红素、直接胆红素、间接胆红素与纤维蛋白原呈负相关,相关系数分别为r=-0.128,r=-0.189,r=-0.207,P<0.05。结论胆红素和纤维蛋白原与糖尿病肾病的发生相关。%Objective To explore the relationship between serum bilirubin, fibrinogen (Fib) and diabetic ne-phropathy (DN) in patients with type 2 diabetes mellitus (T2DM). Methods A total of 629 T2DM patients (T2DM group) were classified into normoalbuminuria group (group A, n=474), microalbuminuria group (group B, n=100) and macroalbuminuria group (group C, n=55) according to the degree of urinary albumin excretion. We randomly chose 146 healthy adults as the control group. The difference in serum bilirubin, Fib among groups and the correlation be-tween serum bilirubin, Fib and diabetic nephropathy were analyzed

  3. Relationship between serum bilirubin and diabetic retinopathy in patients with type 2 diabetes%2型糖尿病增殖期视网膜病变与血清胆红素水平关系的研究

    Institute of Scientific and Technical Information of China (English)

    冯伟; 杨金奎

    2012-01-01

    Objective To investigate the difference of serum bilirubin between non-diabetic retinopathy( NDR) in long-standing type-2 diabetes mellitus and proliferative diabetic retinopathy( PDR) . Methods Type-2 diabetic patients who were out-patient or who attended the department of endocrinology at Capital Medical University affiliated Tongren Hospital between March 2010 and December 2011 were recruited. Of all the patients, 253 had diabetic duration longer than 10 years and non-diabetic retinopathy( NDR) (male female ratio: 136/117) , and 218 had proliferative diabetic retinopathy( PDR) and diabetic duration was not restricted( male female ratio: 98/120). Comparing the level of serum bilibubin between the two groups and the significant parameters were taken to the logistic regression formula. Results Both total bilirubin and indirect bilirubin were not significantly different between the two groups(P>0. 05) , however, patients with NDR had higher direct bilirubin than those with PDR(P<0. 05). Concerning sex, male patients in NDR group had higher direct bilirubin than those with PDR. But in female patients, no significant diffenence was found. In the logistic regression analysis about diabetic retinopathy risk factors, age and direct bilirubin were protective factors; and systolic blood pressure, HbAlc were risk factors. Conclusion The level of direct bilirubin between the NDR group with diabetic duration longer than 10 years and PDR was different. Bilirubin is a natural anti-oxidant, and can play a protective role in the onset and development of diabetic retinopathy.%目的 研究2型糖尿病长病程的无糖尿病视网膜病变患者(病程≥10年)与增殖期糖尿病视网膜病变患者之间胆红素水平的差异.方法 2010年3月至2011年12月于首都医科大学附属北京同仁医院内分泌科门诊或住院治疗的2型糖尿病患者.其中病程≥10年且无糖尿病视网膜病变(non-diabetic retinopathy,NDR)的患者253例(男女比例为136

  4. THE RELATION OF BILIRUBIN AND MALONDIALDEHYDE WITH DIABETIC RETINOPATHY IN 2 DIABETES MELLITUS%血清胆红素和脂质过氧化物水平与2型糖尿病视网膜病变的相关性研究

    Institute of Scientific and Technical Information of China (English)

    伟伟; 路强

    2015-01-01

    目的::测定2型糖尿病伴或不伴糖尿病视网膜病变( diabetic retinopathy,DR)的病人血清中胆红素和脂质过氧化物( malondialdehyde,MDA)水平,探讨其与糖尿病视网膜病变严重程度的相关性。方法:研究共纳入160人。无糖尿病病人60人作为对照。其余患有2型糖尿病的病人100人作为实验组,其中有54名病人无DR,46名病人伴有DR。结果:对照组血清中总胆红素、直接胆红素、间接胆红素水平均高于实验组( P=0.016,0.032,0.023)。同时,糖尿病病人血清MDA水平高于对照组(P=0.00)。血清总胆红素、直接胆红素、间接胆红素水平较不伴DR病人血清水平低(P=0.00,0.019和0.006)。受试者基于血清总胆红素浓度,DR与胆红素的相关性在最高四分位数的胆红素病人中相比于最低四分位数组显著降低。 DR的严重程度与总胆红素水平成反比(P=0.001)。多元回归分析表明总胆红素水平与DR相关(P=0.034)。结论:糖尿病伴有DR的血清总胆红素水平较不伴有DR的糖尿病病人和对照组显著降低,而MDA水平没有显示出与DR有任何关联性。%Objective:To measure the levels of serum bilirubin and MDA in type 2 DM patients with and without diabetic retinopathy( DR) and to correlate them with severity of DR. Methods:A total number of 160 patients,60 were controls without type 2 DM and the rest 100 were type 2 DM patients were recruited in the study. The 100 diabetics, out of which 54 patients did not have DR and 46 patients had DR. Results:The three parameters,total bilirubin,direct bilirubin,indirect bilirubin were higher in controls as compared to experiment group ( P=0 . 016 , 0 . 032 , 0 . 023 ) . Serum MDA levels were shown to be higher in diabetics when compared to controls(P=0. 00). The values of all the three parameters,total bilirubin,direct bilirubin and indirect bilirubin were lower in patients with retinopathy as compared to those without retinopathy(P=0. 00

  5. Impact of misoprostol using in labor induction of prolonged pregnancy on the serum total bilirubin of neonates%应用米索前列醇引产对新生儿血清总胆红素的影响

    Institute of Scientific and Technical Information of China (English)

    李宁

    2015-01-01

    目的:探讨对超过预产期产妇应用米索前列醇引产对新生儿血清总胆红素的影响。方法选择2010年12月至2012年12月在沈阳市沈河区妇幼保健所出生的因超过预产期引产的新生儿155例,其中无药物引产(A组)50例,催产素引产(B组)52例,米索前列醇引产(C组)53例,测定3组新生儿出生后24 h、96 h微量血清总胆红素。结果3组新生儿出生后24 h、96 h微量血清总胆红素水平分别为:A组(47.3±1.8)umol/L、(173.9±5.9)umol/L,B组(55.8±2.1)umol/L、(198.9±6.1)umol/L,C组(64.2±2.7)umol/L、(230.9±6.1)umol/L。新生儿微量血清总胆红素水平A组低于B组、C组(P<0.05);A组、B组新生儿高胆红素血症发生率、新生儿窒息发生率低于C组( P<0.05)。结论米索前列醇用于引产可导致新生儿血清胆红素升高。%Objective To explore the impact of misoprostol using in labor induction of prolonged pregnancy on the serum total bilirubin of neonates .Methods 155 neonates of induced labor in Maternal and Child Health Care Institution of Shenhe District in Shenyang City from Dec.2010 to Dec.2012 were selected, Group A(n =50), Group B(n =52) and Group C(n =53) who conducted induced labor with no drug , oxytocin and misoprostol separately .The serum total bilirubin were measured for neonates 24h, 96h after birth.Results The serum total bilirubin of neonates 24h, 96h after birth of 3 groups:group A were(47.3 ±1.8)umol/L, (173.9 ±5.9)umol/L, group B were(55.8 ±2.1)umol/L,(198.9 ±6.1)umol/L, group C were(64.2 ±2.7)umol/L,( 230.9 ± 6.1)umol/L.The serum total bilirubin of neonates of group A was lower than group B and group C (P<0.05), The incidence of neonatal hyperbilirubinemia and neonatal asphyxia of group A and group B were lower than group C ( P <0.05 ) .Conclusion Misoprostol using in labor induction of prolonged pregnancy may cause a increase of serum bilirubin of

  6. 新生儿胆红素脑病的观察与护理%Observation and nursing of neonatal bilirubin encephalopathy

    Institute of Scientific and Technical Information of China (English)

    孙霞; 高霞; 李萍

    2014-01-01

    目的:探讨新生儿胆红素脑病(ABE)的临床治疗方法及护理措施。方法选取我院新生儿ABE患儿168例,所有患儿实施常规护理,其中2011年1月~2012年1月期间收治的患儿78例,设为C2组(对照组);2012年1月~2013年1月收治的患儿90例,设为C1组(观察组),对其予早期康复护理干预。C1组患儿临床病情表现稳定后,护理人员针对患儿实施听觉刺激、视觉刺激以及嗅觉刺激等系列护理。对比两组患儿的MDI(智力发育指数)、PDI(运动发育指数)及智能情况。结果 C1组患儿每一时间段PDI及MDI与C2组患儿比较改善显著,差异有统计学意义(P<0.05);C1组智力异常率明显低于C2组,差异有统计学意义(P<0.05)。结论针对新生儿ABE患者予早期康复护理干预,可显著促进患儿的运动发育及智力发育,明显改善患儿的预后。%Objective To investigate the clinical treatment of neonatal bilirubin encephalopathy (ABE)and the specif-ic care measures. Methods Selected 168 cases of ABE in our hospital,and 78 cases of children admitted from January 2011 to January 2012,implementation of routine care for all children,set C2 group(control group); 90 cases of chil-dren admitted. C1 group (observation group)was from January 2012 to January 2013. Given children with early reha-bilitation nursing intervention. After clinical condition was stable in C1 group of children, caregivers for children with auditory stimuli implemented, visual stimulation and olfactory stimuli, such as a series of measures to care for the children. C1 and C2 group of children with MDI,PDI and intelligent case of children were compared. Results C1 group of children in each time period PDI and MDI,and C2 groups of children were compared,both showed significant im-provement(P<0.05);In mental abnormality rate,C1 group was lower than the C2 group(P<0.05). Conclusion ABE for neonatal patients given early rehabilitation nursing intervention can

  7. Significance to determine the serum biliru-bin in patients with acute atherosclerotic cerebral infarction%急性动脉粥样硬化性脑梗死患者血清胆红素变化的临床意义

    Institute of Scientific and Technical Information of China (English)

    赵守财; 储照虎; 马领松; 陈奕农; 汪飞

    2013-01-01

    Objective:To determine the serum bilirubin variation in pa-tients with acute atherosclerotic cerebral infraction ( ACI) for ascertaining whether bilirubin can be neuro-protective role in acute stroke patients . Methods:The risk factors and imaging information were collected in ACI patients for calculation of the infract size and quantitative measure of the stroke-related neurologic deficit by National Institutes of Health Stroke Scale(NIHSS).Enzyme linked immunosorbent assays(ELISA)was per-formed to detect the levels of total bilirubin and conjugated bilirubin 24 hour after admission.The bilirubin ratio(quotient of between direct biliru-bin and the total bilirubin)were calculated,and the relationship was esti-mated on the risk factors basis regarding the infract size,NHHSS scoring and the bilirubin ratio.Results:The levels total bilirubin and direct biliru-bin were in normal limit and showed no significant difference for ACI pa-tients and control subjects,and the mean ratio of bilirubin was 0.327 ± 0.063 in ACI patients.Logistic regression analysis on dependent variable of bilirubin suggested no significant difference concerning remaining risk factors except for statistical significance being observed relative to biliru-bin ratio,alcohol drinking patterns and history of coronary artery disease. Subgrouping by bilirubin ratio as 0.20-0.29,0.30 -0.34 and 0.35 -0.51 in ACI patients showed that those with bilirubin ratio of 0.20 -0.29,0.30-0.34 were significantly different,whereas those with biliru-bin ratio of 0.35 -0.51 had no statistical difference before and after medication.Conclusion:Although the serum bilirubin levels may remain in normal limit in patients with ACI , yet the ratio variation of bilirubin seems associated with the severity of this entity .%目的:了解急性动脉粥样硬化性脑梗死患者血液中胆红素的变化,探讨胆红素的脑保护作用。方法:通过收集患者各危险因素及影像学资料,计算梗死面积,

  8. The clinical application of serum albumin and unconjugated bilirubin de-tection in neonatal jaundice%血清白蛋白、非结合胆红素的检测在新生儿黄疸中的临床应用

    Institute of Scientific and Technical Information of China (English)

    曹丽琴

    2015-01-01

    Objective To study the clinical application value of serum albumin and unconjugated bilirubin detection in neonatal jaundice. Methods A total of 86 cases of neonatal jaundice were enrolled in this study. The serum albumin was measured by ELISA analysis. The unconjugated bilirubin was measured by vanadate oxidation analysis. Results There were significant differences of serum albumin, unconjugated bilirubin, and total bilirubin between moderate jaun-dice group and severe jaundice group(P<0.05﹚. The expressions of serum albumin, unconjugated bilirubin, and total biliru-bin were significant differences among infection, hemolytic, and obstructive jaundice group (P<0.05﹚. Conclusion The detection of serum albumin,unconjugated bilirubin and and total bilirubin has something to contribute to diagnose, exti-mate pathogenetic condition, and analyze etiological factor in neonatal jaundice.%目的:检测新生儿黄疸白蛋白和非结合胆红素表达的变化。方法收集我院收治的新生儿黄疸患儿86例,血清白蛋白使用ELISA法测定,非结合胆红素使用钒酸盐氧化法测定。结果白蛋白、非结合胆红素和总胆红素的表达水平在病理性黄疸中度组和重度组之间具有显著性差异(P<0.05﹚。感染性、溶血性和阻塞性黄疸组之间上述指标也存在显著性差异(P<0.05﹚。结论血清白蛋白、非结合胆红素以及总胆红素水平的检测有助于新生儿黄疸的诊断、评估病情以及病因的分析。

  9. 阴道分娩的断脐方法对胆红素及血红蛋白的影响%The effect of umbilical cord clamping on serum bilirubin and hemoglobin during vaginal delivery

    Institute of Scientific and Technical Information of China (English)

    王忠轩; 黄惠娟; 刘凤萍

    2011-01-01

    [ Objective ] To improve hemoglobin level but not increase serum bilirubin when the method of umbilical cord clamping is used during vaginal delivery. [Methods] Full term babys (n =120) were randomly assigned to experimental group (n =68) and control group (n =54). The umbilical cords of both groups were clamped within 30 seconds after birth. But the experimental group was clamped near the placenta and put up the distal remaining the cord untorsion in order to make the residual blood completely flow into the infants, while the control group was clamped by conventional method. The total serum bilirubin, peak-time of bilirubin, hemoglobin, hematocrit of the two groups were compared. [ Results ] The difference of serum bilirubin between two groups was not significant (P > 0.05). Hemoglobin and hematocrit of infants when birth and at 3-days of experimental group were higher than that of control group. The difference between two groups was significant (P <0.01). Hemoglobin and hematocrit of infants of experimental group at 3-days were higher than that of birth. The difference was significant (P <0.01); Hemoglobin and hematocrit of infants of control group at 3-days were also higher than that of birth, the difference was significant (P <0.05). [ Conclusion ] The method of umbilical cord clamping near the placenta within 30 seconds after birth during vaginal dehvery can not increase the incidence of jaundice induced by hyperbilirubinemia, but can improve hemoglobin level and reduce the incidence of anemia in infants.%目的 探讨断脐方法 以提高新生儿血红蛋白值但不增加胆红素值的研究.方法 对正常足月阴道分娩的新生儿120例,随机分为研究组58例和对照组62例.两组新生儿均于娩出后30 s内断脐,研究组断脐部位靠近胎盘端,并将远端抬高保持脐带不扭转,以便脐带内残余血迅速完全流入新生儿体内,再结扎处理脐部;对照组常规断脐处理残端.对两组新生儿的胆

  10. The study of the correlation between the serum bilirubin level and the intracranial artery stenosis of the patients with cere-bral infarction%脑梗死患者血清胆红素含量与颅内动脉狭窄的相关性研究

    Institute of Scientific and Technical Information of China (English)

    王鸫霖

    2014-01-01

    Objective To analyze the correlation between the serum bilirubin level and the intracranial artery steno-sis of the patients with cerebral infarction by using DSA to observe the intracranial artery stenosis of the patients with cerebral infarction.Methods 200 patients with cerebral infarction were included as qualified cases.100 patients with mild stenosis or without stenosis were included into the control group.The research objects were divided into two groups according to whether there was the intracranial artery stenosis or not.At the same time,the subgroup analysis was employed to the degrees of stenosis.The differences and changes of the serum bilirubin levels in the different groups and subgroups were compared.The regression analysis on the related risk factors was employed.Results There were statistically significant differences of the total bilirubin SIB,the indirect bilirubin STB between the stenosis group and the control group(P <0.05).The total bilirubin SIB and the indirect bilirubin STB of the stenosis group were sig-nificantly lower than those of the control group.The total bilirubin SIB and the indirect bilirubin STB of the severe ste-nosis and the occlusion group were significantly lower than those of the moderate stenosis group.Multivariate regres-sion analysis showed that serum bilirubin,hypertension,diabetes related to intracranial artery stenosis.Conclusion A lower serum bilirubin level may be an important risk factor of cerebral infarction and correlate with the occurrence of in-tracranial atherosclerotic stenosis.%目的:采用 DSA 观察脑梗死患者颅内动脉狭窄情况,深入分析血清胆红素含量与与患者颅内动脉狭窄的相关性。方法纳入合格的脑梗死患者200例。对照组为无狭窄或轻度狭窄患者,例数为100例。根据颅内动脉有无狭窄分成两组。同时进行狭窄程度的亚组分析。比较不同组间及其亚组内的血清胆红素含量的差异与变化。对相关危险

  11. 足月显性黄疸新生儿 TcB 与血清 TSB 测定的比较%A comparison between transcutaneous bilirubin and total serum bilirubin measurement in full-term neonates with visible jaundice

    Institute of Scientific and Technical Information of China (English)

    孙立平; 王助衡; 底建辉; 张铮; 洪翠翠

    2016-01-01

    Objective To evaluate the accuracy of BiliCheck device used for measuring the levels of transcutaneous bilirubin ( TcB) in full-term neonates with visible jaundice .Methods The levels of total serum bilirubin ( TSB ) and TcB were measured by using direct spectrophotometric device and BiliCheck device , respectively .TSB was set as the reference standard .The data was analyzed by using Stata/SE 12.0 (StataCorp LP, U.S.A.) statistical programme so as to evaluate the accuracy of TcB measurement in full-term neonates with visible jaundice and to re-evaluate the guideline for jaundice in neonates .Results A total of 368 pairs of TSB/TcB samples were collected from 222 cases of neonates.The mean value of TSB and TcB was 225.4 ±25.4μmol/L and 237.9 ±21.0μmol/L, respectively. The correlation between them was poor [Pearson’s correlation coefficient was 0.439; Lin’s concordance coefficient was 0.377 (95%confidence interval ranged from 0.301 to 0.453,P<0.001].The Bland-Altman analysis demonstrated that TcB measurements tended to overestimate the value of TSB (mean difference was 12.5 ±24.9 μmol/L).The 95% limits of agreement were relatively wide (-36.2-61.3 μmol/L).Conclusion When using BiliCheck device to measure the levels of TcB and TSB in full-term neonates with visible jaundice, the correlation between TcB and TSB is poor .Thus, imprecise results are often obtained when using BiliCheck device to predict the actual level of TSB .To some extent , it has increased the possibility of requiring phototherapy during treatment .%目的:评估应用BiliCheck 设备新生儿经皮胆红素( TcB)测定的准确度。方法分别使用直接分光设备和Bili-Check设备进行测定,获得血清总胆红素(TSB)值和TcB值,以TSB为参考标准,使用Stata/SE 12.0(StataCorp LP,美国)统计方案对数据进行分析,考察健康足月显性黄疸新生儿TcB测定的准确度,并重新评估新生儿黄疸指南。结果获得222

  12. Research in the mathematical model of transcutaneous bilirubin and total serum bilirubin after phototherapy in neonates%光疗后新生儿经皮胆红素测定值与血清胆红素值数学模型研究

    Institute of Scientific and Technical Information of China (English)

    毛旭洁; 林振浪; 赵益伟; 王晓

    2015-01-01

    目的:通过建立光疗结束时遮光材料覆盖区域新生儿经皮胆红素测定值(TcB)与血清胆红素值(TSB)关系的数学模型,为临床用新生儿经皮胆红素测定值来推算实际血清胆红素值提供理论依据。方法2013年10月—2014年6月期间随机选择温州医科大学附属乐清医院新生儿科住院的病理性黄疸患儿,根据胎龄分为:足月儿组(胎龄≥37周)、晚期早产儿组(胎龄34~36+6周)和早中期早产儿组(28~33+6周)。给予单面或双面光疗,光疗时在额部、前胸部经皮胆红素检测区域用遮光材料覆盖,光疗前后测定额部、前胸部、会阴部TcB各3次,同时抽血检测TSB。结果共261例患儿纳入研究,足月儿组169例、晚期早产儿组63例、早中期早产儿组29例。光疗前,所有病例额部、前胸部、会阴部TcB值与TSB值均有显著相关性(r=0.813、0.827、0.754,P均<0.001),其中前胸部TcB值与TSB值相关性最好,因此光疗前采用新生儿前胸部TcB值与TSB值建立直线回归方程:TSB=1.35 TcB –5.50。光疗结束时,所有病例额部、前胸部、会阴部TcB值与TSB值也均有显著相关性(r=0.751、0.807、0.683,P均<0.001),其中前胸部TcB值与TSB值相关性最好,因此光疗后采用前胸部TcB值与TSB值建立直线回归方程:TSB=1.01×TcB –0.62。三组中,足月儿组较其他组相关性更佳。结论光疗结束后前胸部黑色卡纸遮盖区域的TcB值与TSB值相关性好,可以建立直线回归模型。%ObjectiveTo establish the mathematical model of transcutaneous bilirubin (TcB) and total serum bilirubin (TSB) after phototherapy in neonates.MethodsNeonates with pathological jaundice were enrolled from October 2013 to June 2014. The neonates were divided into three groups by gestational age: full-term neonates (gestation age of 37-42 weeks), late preterm neonates (gestation age of 34-36+6 weeks), early and mid-preterm neonates (gestation

  13. The Value Analysis in Clinical Test of Serum Bilirubin and Uric Acid in Patients with Coronary Heart Disease(CHD)%血清胆红素与尿酸在冠心病患者临床检验中的价值分析

    Institute of Scientific and Technical Information of China (English)

    欧阳莉娜

    2013-01-01

    目的:对血清胆红素与尿酸在冠心病患者临床检验中的价值进行评价分析,为今后的临床诊治工作提供可靠的参考依据。方法:抽取在2010年7月-2013年7月本院收治的冠心病临床患者78例和同期健康体检者60例,对其展开血清胆红素与尿酸水平检测,并对比分析两组研究对象的检测结果。对冠心病患者行冠脉造影检测,计算Gensini积分,对比分析不同积分者的各项观察指标的检测结果。结果:冠心病组患者血清总胆红素、直接胆红素、间接胆红素水平均较对照组发生显著降低(P<0.05),血清尿酸水平较对照组发生显著升高,比较差异均有统计学意义(P<0.05)。随着Gensini积分的增加血清总胆红素、直接胆红素、间接胆红素水平逐渐降低,而尿酸水平则逐渐增加。结论:对血清胆红素、尿酸水平进行检测可对冠心病的诊断、冠状动脉狭窄程度评估等提供可靠的参考依据,值得关注。%Objective:To evaluate and analysis the clinical trial value of serum bilirubin and uric acid in patients with coronary heart disease. To provide reliable reference for clinical diagnosis and treatment work in the future.Method:78 clinical physical examination patients with coronary heart disease and 60 healthy patients were selected from our hospital between from July 2010 to July 2013,their serum bilirubin and uric acid level were detection,and two groups of test results were compared;the line of coronary angiography in patients with coronary heart disease was detection,to sum the Gensini score.The different between the observation indexes of the integral test results were compared and analyzed.Result:The serum total bilirubin, direct bilirubin and indirect bilirubin levels of the coronary artery disease patients were significantly lower than the control group decreased(P<0.05), the serum uric acid level was significantly higher,there were

  14. Conjugated Bilirubin Differentially Regulates CD4+ T Effector Cells and T Regulatory Cell Function through Outside-In and Inside-Out Mechanisms: The Effects of HAV Cell Surface Receptor and Intracellular Signaling

    Science.gov (United States)

    Corral-Jara, Karla F.; Gómez-Leyva, Juan F.; Rosenstein, Yvonne; Jose-Abrego, Alexis; Roman, Sonia

    2016-01-01

    We recently reported an immune-modulatory role of conjugated bilirubin (CB) in hepatitis A virus (HAV) infection. During this infection the immune response relies on CD4+ T lymphocytes (TLs) and it may be affected by the interaction of HAV with its cellular receptor (HAVCR1/TIM-1) on T cell surface. How CB might affect T cell function during HAV infection remains to be elucidated. Herein, in vitro stimulation of CD4+ TLs from healthy donors with CB resulted in a decrease in the degree of intracellular tyrosine phosphorylation and an increase in the activity of T regulatory cells (Tregs) expressing HAVCR1/TIM-1. A comparison between CD4+ TLs from healthy donors and HAV-infected patients revealed changes in the TCR signaling pathway relative to changes in CB levels. The proportion of CD4+CD25+ TLs increased in patients with low CB serum levels and an increase in the percentage of Tregs expressing HAVCR1/TIM-1 was found in HAV-infected patients relative to controls. A low frequency of 157insMTTTVP insertion in the viral receptor gene HAVCR1/TIM-1 was found in patients and controls. Our data revealed that, during HAV infection, CB differentially regulates CD4+ TLs and Tregs functions by modulating intracellular pathways and by inducing changes in the proportion of Tregs expressing HAVCR1/TIM-1. PMID:27578921

  15. Cerebral palsy associated with bilirubin-encephalopathy and its precipitating factors%胆红素脑病引起的脑性瘫痪及其促发因素分析

    Institute of Scientific and Technical Information of China (English)

    侯梅; 王海桥; 孙殿荣; 王珂; 赵建慧

    2009-01-01

    目的 探讨新生儿胆红素脑病后遗脑性瘫痪的促发因素.方法 回顾分析1999年1月至2008年6月青岛市残疾儿童医疗康复中心住院治疗的脑性瘫痪患儿资料,以面谈方式填写父母调查问卷,详细询问并记录新生儿期疾病情况尤其是黄疸情况.由专科医师进行全面的神经科体格检查、常规进行脑干听觉诱发电位(ABR)检剐、格塞尔(Gesell)发育测查、脑CT或MRI检查.结果 满足诊断条件者共35例,其中男25例,女10例.年龄5个月至9岁2个月,中位值23个月.其中足月儿25例,早产儿10例.除脑性瘫痪外,16例患儿合并牙齿发育不良,6例患儿合并听觉障碍.ABR测得的听力阈值75~105 dB,均为双侧性损伤,1例合并West综合征.35例患儿中21例因"核黄疸"、"胆红素脑病"住院治疗,主要病因为ABO溶血症和感染;就诊时间以及高胆红素血症干预时问为生后2 d至生后1个月,中位值7 d;血清总胆红素(TSB)范围400.0~889.9μmol/L,中位值580.0μmol/L,其中10例进行了换血治疗,其他给予蓝光照射、输注白蛋白等.14例患儿有严重黄疸史但未曾诊治,其中7例为早产儿.结论 家长和基层医务人员对新生儿尤其早产儿黄疸重视不够,严重黄疸就诊和治疗过晚是胆红素脑病引起脑性瘫痪的促发因素.如何加强一级和二级预防是临床首要问题.%Objective To investigate the precipitating factors, clinical features and brain magnetic resonance imaging (MRI) of cerebral palsy in children with neonatal bilirubin-encephalopathy. Methods The children with cerebral palsy associated with bilirubin-encephalopathy, who had been treated between January 1999 and June 2008 in Qingdao Rehabilitation Center for Disabled Children, were retrospectively studied. Their parents were interviewed for their high risk factors, neonatal jaundice status and development history. Two neuro-pediatricians performed together a comprehensive neurologic assessment for

  16. Clinical analysis on transcutaneous bilirubin value of normal neonates at 7 days after birth%正常新生儿生后7天经皮胆红素值的临床分析

    Institute of Scientific and Technical Information of China (English)

    王金秀; 王瑛; 江华; 张琳; 刘滢; 丁雪晶

    2011-01-01

    Objective: To provide the transcutaneous bilirubin (TcB) value of normal neonates at 7 days after birth in Changzhou region, obtain the average peak value of TcB, provide a basis for clinical diagnosis, draft an hour - specific TcB percentile nomogram suitable for the neonates in the region. Methods: 7 482 TcB values were obtained from 679 healthy full term neonates and near full term neonates by JH20 - 1B percutaneous jaundice apparatus from January to March in 2010, the detection time was from 12 hours after birth until 152 hours after birth. Every TcB percentile for each designated time was calculated and used for drafting an hour - specific nomogram. Results: TcB values varied at different time points among the normal neonates at 12 ~ 152 hours after birth, peaked at 116 hours after birth, the proportion of neonatal hyperbilirubinemia (TcB>12.9 mg/dL) was 8.4% (57/679) , no bilirubin encephalopathy occurred during follow - up after leaving the hospital TcB nomogram reflected the natural history of TcB among the normal neonates at 7 days after birth. The average peak value of bilirubin was (10.0 ±2. 2) mg/dL, the P40, P75 and P95 of bilirubin were 8. 3 mg/dL, 10. 8mg/dL and 12.6 mg/dL, respectively. Among the perinatal factors, TcB level was significantly associated with gestational age, premature rupture of membrane and cephalhematoma (P < 0. 05) . Conclusion: The appearance time and peak time of neonatal jaundice in Changzhou region are similar to the published reports at home and abroad; the diagnostic criterion of neonatal hyperbilirubinemia in China should be higher than current criterion, thus, the interventional standard of hyperbilirubinemia should be improved correspondingly.%目的:提供常州地区正常新生儿生后7天经皮胆红素(TcB)值,得出胆红素的平均峰值,为临床诊断奠定基础并制定一份适合本地区新生儿小时TcB百分位列线图.方法:2010年1~3月679例健康足月和近足月新生儿采用JH20 - 1B

  17. Correlation and Clinical Significance of Serum Bilirubin Level and TIMI Risk Score in Patients with Non-ST Segment Elevation Myocardial Infarction%非ST段抬高型心肌梗死患者血清胆红素水平与TIMI危险评分的相关性及临床意义

    Institute of Scientific and Technical Information of China (English)

    王涛

    2016-01-01

    目的:探讨非 ST段抬高型心肌梗死(NSTEMI)患者血清胆红素(BIL)水平与TIMI评分的相关性及临床意义。方法收集104例 NSTEMI患者一般资料,包括年龄、性别、体质量指数、血压、糖尿病、低密度脂蛋白胆固醇水平以及吸烟等,清晨空腹采血测定血清总胆红素(TBIL)、直接胆红素(DBIL)、间接胆红素(IBIL)水平。采用TIMI评分标准对NSTEMI患者进行风险评估,计算NSTEMI组患者TIMI评分并进行危险分层,以评分差异分组,分为低位组、中危组、高危组;分析 NSTEMI患者血清 BIL水平与 TIMI积分的相关性及临床意义。结果高危组患者TBIL、IBIL水平明显低于中危组、低危组(P<0.01);NSTE-MI组TBIL、IBIL水平与其TIMI分值均有负相关关系(r=-0.20,P<0.05;r=-0.228,P<0.05)。结论NSTEMI 患者血清BIL 水平与TIMI 积分呈负相关,TBIL 对NSTEMI 患者早期危险度分层具有预测价值。%Objective To investigate the correlation and clinical significance of serum bilirubin(BIL)lev-el and TIMI score in patients with non-ST segment elevation myocardial infarction(NSTEMI).Methods The clinical data of 104 patients with NSTEMI patients were collected,including age,gender,body mass in-dex,blood pressure,diabetes,low-density lipoprotein cholesterol(LDL-C)levels and smoking,and the morn-ing fasting blood determination of serum total bilirubin(TBIL),direct bilirubin(DBIL)and indirect bilirubin (IBIL).The TIMI risk score was used for risk assessment of patients with NSTEMI.TIMI scores of NSTEMI patients were calculated and their risks were stratified.Based on score differences,the patients were divided into low-risk group,middle-risk group and high-risk group.The correlation of serum bilirubin levels and TIMI risk score was analyzed as well as its clinical significance.Results 1.TIMI risk stratifica-tion showed that the levels of serum total bilirubin(TBIL)and indirect

  18. Reason analysis and solution method of internal quality total bilirubin drift%关于室内质控总胆红素漂移的原因分析及解决办法

    Institute of Scientific and Technical Information of China (English)

    郑风林

    2015-01-01

    Objective:To study the reason and solution of the down drift of total bilirubin serum prepared monthly. Methods:The prepared quality-control serum was distributed into 30 crystal or brown bullet-shaped tubes respectively, and stored at-20℃. Take out a tube every day for test.Results:The test level of quality-control serum preserved in crystal tubes drift down obviously everyday,while that in brown tubes was stable in a desired range. Conclusions:The down-drift of quality-control serum levels could be prevented effectively by preserved in brown tubes.%目的:研究月配质控血清总胆红素(TBIL)测定值随着时间的推移向下漂移的原因及找出解决的办法。方法:把配制的质控血清分别分装在30支普通透明的子弹头状离心管和30支棕褐色避光的离心管中放冰箱冷冻备用,每天取出一支进行质控检测。结果:普通透明离心管保存的质控血清TBIL测定值逐天明显向下漂移,而避光保存的质控血清其TBIL测定值则基本稳定在一个理想的质控允许范围以内。结论:用棕褐色离心管保存质控血清,可有效防止质控血清TBIL测定值的向下漂移。

  19. Gilbert's syndrome: High frequency of the (TA)7 TAA allele in India and its interaction with a novel CAT insertion in promoter of the gene for bilirubin UDP-glucuronosyltransferase 1 gene

    Institute of Scientific and Technical Information of China (English)

    Shabana Farheen; Sanghamitra Sengupta; Amal Santra; Suparna Pal; Gopal Krishna Dhali; Meenakshi Chakravorty; Partha P Majumder; Abhijit Chowdhury

    2006-01-01

    AIM: To identify the variants in UDP-glucuronosyltransferase 1 (UGT1A1) gene in Gilbert's syndrome (GS) and to estimate the association between homozygosity for TA insertion and GS in India, as well as the frequency of TA insertion and its impact among normal controls in India.METHODS: Ninety-five GS cases and 95 normal controls were selected. Liver function and other tests were done. The promoter and all 5 exons of UGT1A1 gene were resequenced. Functional assessment of a novel trinucleotide insertion was done byin silico analysis and by estimating UGT1A1 promoter activity carried out by luciferase reporter assay of appropriate constructs in Hep G2 cell line.RESULTS: Among the GS patients, 80% were homozygous for the TA insertion, which was several-fold higher than reports from other ethnic groups. The mean UCB level was elevated among individuals with only one copy of this insertion, which was not significantly different from those with two copies. Many new DNA variants in UGT1A1 gene were discovered, including a trinucleotide (CAT) insertion in the promoter found in a subset (10%) of GS patients, but not among normal controls. In-silico analysis showed marked changes in the DNA-folding of the promoter and functional analysis showed a 20-fold reduction in transcription efficiency of UGT1A1 gene resulting from this insertion, thereby significantly elevating the UCB level.CONCLUSION: The genetic epidemiology of GS is variable across ethnic groups and the epistatic interactions among UGT1A1 promoter variants modulate bilirubin glucuronidation.

  20. Bilirubin dysregulates myelination in early neonatal life

    OpenAIRE

    Barateiro, Andreia Pereira, 1982-

    2012-01-01

    Tese de doutoramento, Farmácia (Biologia Celular e Molecular), Universidade de Lisboa, Faculdade de Farmácia, 2012 Oligodendrocytes (OL) are neuroglial cells present in the central nervous system responsible for myelin sheath formation, that provide an electric insulation of axons fastening the transmission of electrical signals. During the neonatal period, the brain is particularly vulnerable to toxic insults, like the one induced by hyperbilirubinemia. It has been demonstrated that in th...

  1. 胆红素对成人肝移植术后急性呼吸窘迫综合征的影响%The impact of bilirubin for acute respiratory distress syndrome in post-liver transplantation adults

    Institute of Scientific and Technical Information of China (English)

    赵蔚; Victor W.Xia

    2014-01-01

    目的:回顾性分析成人肝移植患者术后急性呼吸窘迫综合征(acute respiratory distress syndrome,ARDS)的发生和临床危险因素,探讨胆红素对ARDS发病和预后的影响。方法经医学伦理委员会同意,选择2004年1月1日至2011年12月31日的成人(年龄≥18岁)肝移植患者,所有数据来自加州大学洛杉矶分校(UCLA)的移植数据中心。诊断标准采用2011年ARDS柏林新定义,将患者分为ARDS组和非ARDS(No-ARDS)组两组,均采用全身麻醉。分析数据包括一般情况,实验室检查如总胆红素、肌酐、电解质(K+、Na+)及预后情况。数据分析软件采用IBM SPSS 20.0软件。结果1335例肝移植患者中有57例术后出现ARDS,发生率为4.3%;终末期肝病模型(MELD)评分和术前是否已经气管内插管两组之间差异均有统计学意义(均P<0.05)。电解质和肌酐两组间无明显差异(P>0.05)。总胆红素在术前〔(411.01±322.16)μmol/L比(250.17±271.04)μmol/L〕和术后第7天〔(164.84±146.55)μmol/L比(84.13±91.83)μmol/L〕ARDS组明显高于No-ARDS组(均P<0.05);经logistic分析,术前总胆红素≥324.9μmol/L(P=0.013,95%CI=1.164~3.578)和术后第7天总胆红素≥188.1μmol/L(P=0.001,95%CI=1.488~5.331)是ARDS发生的独立危险因素。ARDS组1年病死率明显高于No-ARDS组(6.10%比3.30%,P=0.033)。结论①肝移植术后ARDS发生率为4.3%,是多个因素作用的结果;②胆红素对ARDS的作用与剂量有关,术前总胆红素≥324.9μmol/L、术后第7天总胆红素≥188.1μmol/L是术后ARDS发生的危险因素。%Objective To retrospectively analyze the incidence and risk factors of acute respiratory distress syndrome(ARDS)in post-liver transplant adult patients, and to approach the effect of bilirubin on morbidity and prognosis of ARDS. Methods After winning institutional review board approval

  2. 药浴水疗对早产儿及低体重儿胆红素及血糖的影响%The effects of medicated hydrotherapy on bilirubin and blood glucose in premature and low birth weight neonates

    Institute of Scientific and Technical Information of China (English)

    曾小华; 朱湘陵; 冯兰青; 卢群娣; 曹辉娟; 叶惠梅; 陈婉婷

    2012-01-01

    目的 根据新生儿黄疸药浴方制成适合早产儿及低体重儿的药浴水疗方,观察此药浴水疗方对早产儿及低体重儿黄疸及血糖的影响.方法 选择住院的采用药浴水疗的38例早产儿或低体重儿为药浴组,同期非药浴水疗的38例早产儿或低体重儿为对照组,以新生儿黄疸的药浴方加减制成适合早产儿或低体重儿生理特点的药浴方,配成500 mL的药液,两组均在出生后24 h进行水疗或沐浴,监测其血糖值、经皮胆红素值的变化.结果 (1)药浴组药浴前后血糖比较,第1、3天差异有统计学意义(P0.05);(2)两组胆红素值比较:第24、48小时两组差异无统计学意义(P>0.05),出生后第96、144小时差异有统计学意义(P 0.05). There was no significant difference of bilirubin between two groups at the 24th and 48 th hour after birth (P > 0. 05 ) ; while it was significantly lower in hydrotherapy group than that in control group at the 96th and 144th hour (P < 0.01). Conclusion The medicated hydrotherapy can reduce hyperbilirubinemia in premature infants and low birth weight infants within 24 hours after birth and alleviate physiological jaundice . And there is no hypoglycemia in medicated bathing.

  3. 健康新生儿出生后120h内经皮胆红素水平的研究%Transcutaneous measurement of bilirubin in postnatal 120 hours in healthy neonates

    Institute of Scientific and Technical Information of China (English)

    王立; 吴光声; 周芳

    2013-01-01

    目的绘制健康黄种新生儿出生后120h内经皮胆红素(TCB)水平随时间变化的TCB-时间百分位曲线图,为新生儿黄疸的评价提供依据。方法3118例健康新生儿,根据不同产式、不同胎龄及是否需要光疗分别分为顺产和剖宫产组;足月儿、早产儿和过期产儿组;非光疗组和光疗组。所有新生儿均在出生后12~120h内定时测定TCB数据。并针对不同组别的TCB改变情况作相关分析,同时绘制TCB-时间百分位曲线图。结果(1)TCB-时间百分位曲线图反映了健康黄种新生儿出生后120h内TCB水平的自然演变过程。(2)不同分娩方式对健康新生儿TCB水平的影响无统计学差异(P>0.05)。(3)足月儿与过期产儿组各个时间点TCB均值均无统计学差异(均P>0.05)。但早产儿组TCB均值于出生96h后明显大于足月儿及过期产儿组(均P<0.05)。(4)光疗组TCB增长速率虽明显大于非光疗组(P<0.05),但在出生后24h内两者百分位曲线也有潜在重叠的部分。结论TCB-时间百分位曲线反映了健康黄种新生儿生后120h内的TCB水平自然演变过程,此变化过程与血清胆红素(TSB)改变相互吻合。接近足月的健康早产儿在出院后应进行TCB定期随访,以预防高胆红素血症的发生。%Objective To develop hour- specific transcutaneous bilirubin (TCB) nomogram for healthy Chinese neonates. Methods TCB levles were measured with BiliCheck bilirubinometer from 12 to 120 postnatal hours in 3118 neonates. The neonates were divided into vaginal and cesarean groups according to delivery mode;term infants, premature infants and post-term infants groups according to gestational age;phototherapy and non- phototherapy groups according to requirement of pho-totherapy. The dynamic changes of TCB levels were analyzed, the TCB percentiles for each time points were calculated and the hour- specific nomogram was developed

  4. 老年冠心病患者冠状动脉狭窄程度与血清胆红素水平的相关性%Relationship between serum level of bilirubin and extent of coronary artery stenosis in aged patients with coronary heart disease

    Institute of Scientific and Technical Information of China (English)

    张晓艳; 安映红; 魏璇; 李明阳

    2012-01-01

    Objective: To investigate relationship between serum level of bilirubin and extent of coronary artery stenosis in aged patients with cardiovascular diseases and its significance. Methods: A total of 264 aged patients with coronary heart disease (CHD) underwent coronary angiography and measurement of serum level of bilirubin. According to results of coronary angiography, patients were divided into normal control group (n= 68) and CHD group (n = 196), and CHD group was further divided into mild group (n = 66), moderate group (n = 64) and severe group (n = 66). Results: One-factor ANOVA analysis indicated compared with normal control group, the serum levels of total bilirubin [ (20. 52 ± 6. 12) μmol/L vs. (18. 07 ± 5. 81)μmol/L vs. (14. 22 ± 5. 19) mol/L vs. (15. 63 ± 6. 30) μmol/L] and indirect bilirubin [ (18. 80 ± 5. 21) μmol/L vs. (15. 46 ± 6. 71)μmol/L vs. (11. 63 ± 3. 42) μmol/L vs. (13. 37 + 4. 35) μmol/L] significantly decreased in mild CHD group, moderate CHD group and severe CHD group (P<0. 05~<0. 01); the multiple linear regression analysis indicated that serum levels of total bilirubin and indirect bilirubin were significant negative correlations with scores of coronary artery stenosis (partial correlation coefficients were -8. 976 and -2. 492 respectively, P<0. 05). Conclusion: Level of bilirubin is closely related with incidence, development and severity of cardiovascular diseases in aged patients, total and indirect bilirubin can be used for good indicators for predicting severity and range of lesions in coronary artery disease.%目的:探讨老年心血管病患者的冠脉狭窄程度与血清胆红素水平的关系及意义.方法:对264例老年冠心病患者行冠脉造影并测定血清胆红素水平.依据冠脉造影结果,患者被分为正常对照组(68例)和冠心病组(196例),其中冠心病组又分为轻度组(66例)、中度组(64例)和重度组(66例).结果:单因素方差分析显示,与正常对照组比较,冠

  5. Study on relationship between serum total bilirubin and diabetic nephropathy in patients with type 2 diabetes%血清总胆红素与2型糖尿病肾病的相关性研究

    Institute of Scientific and Technical Information of China (English)

    杨昊; 李艳; 张莉; 徐永霞; 吕其阔; 朱德发

    2016-01-01

    目的:探寻血清总胆红素(TB)与2型糖尿病肾病的相关性。方法将126例住院2型糖尿病患者按尿白蛋白排泄率(UAER)将其分为正常蛋白尿组、早期糖尿病肾病组、临床糖尿病肾病组,比较三组血清TB 水平及其他临床生化资料,探寻血清 TB 与 UAER 的相关性,并采用多因素 Logistic 回归分析探讨糖尿病肾病发病的影响因素。结果三组间年龄、体质量指数(BMI)、舒张压(DBP)、尿酸(UA)、总胆固醇(TCH)、三酰甘油(TG)、低密度脂蛋白胆固醇(LDL-C)、糖化血红蛋白(HbA1 c)比较差异均无统计学意义(P >0.05),糖尿病病程、收缩压(SBP)、TB 在不同组间差异有统计学意义(P <0.05)。Spearman 相关分析显示血清 TB 与 UAER显著负相关(r =-0.32,P <0.01)。Logistic 多元回归分析显示 BMI 和 TB 是糖尿病肾病的独立影响因素(OR =1.189、0.850;P <0.05、P <0.01)。结论血清 TB 与2型糖尿病肾病呈负相关,其可能成为糖尿病肾病的一种新治疗靶点。%Objective To explore the relationship between serum total bilirubin(TB)and diabetic nephropathy in patients with type 2 diabetes.Methods A total of 126 hospitalized patients with type 2 diabetes were including and divided into three groups according to urinary albumin excretion rate(UAER):normal albuminuria group,early phase diabetic nephropathy group,and clinical diabetic nephropathy group.The serum TB and other clinical and biochemical assessment data were recorded and compared between three groups.The relationship between serum TB and UAER was analyzed.The risk factors of diabetic nephropathy was evaluated by multiple logistic regression analysis.Results There was no significant difference in the age,BMI,DBP,UA,TCH,TG,LDL-C,HbA1 c among three groups(P >0. 05).There were significant difference among the groups in the diabetic duration,SBP and TB (P <0

  6. 参考测量程序测定血清总胆红素浓度的不确定度评定%Evaluation on measurement uncertainty of serum total bilirubin concentration by reference procedure

    Institute of Scientific and Technical Information of China (English)

    戴绘芬; 王惠民; 王建新; 季伙燕; 孟舒婷

    2016-01-01

    目的:探讨参考实验室测定血清总胆红素(TBil)的不确定度评定方法。方法应用国际检验医学溯源联合委员会(JCTLM)推荐的Doumas血清TBil参考测量程序测定国际临床化学和检验医学联合会(IFCC)参考实验室外部质量评价计划(RELA)样本,分析各不确定度分量的来源,并对各不确定度分量分别进行评定,计算合成标准不确定度,进而计算出扩展不确定度。结果2013年RELA-A样本TBil平均浓度为52.30μmol/L,合成标准不确定度为0.67μmol/L,取包含因子(k)=2、95%置信区间,则扩展不确定度为1.34μmol/L;2013年RELA-B样本TBil平均浓度为81.60μmol/L,合成标准不确定度为0.70μmol/L,取k=2、95%置信区间,则扩展不确定度为1.40μmol/L。结论依据JCTLM推荐的Doumas血清TBil参考测量程序建立的测量不确定度评定方法可满足临床实验室对血清TBil参考测量系统的要求。%ObjectiveTo investigate the evaluation method for measurement uncertainty of serum total bilirubin (TBil) concentration in clinical reference laboratories.MethodsThe International Federation of Clinical Chemistry and Laboratory Medicine(IFCC) external quality assessment scheme for reference laboratories in laboratory medicine(RELA)sample was measured by Doumas serum TBil reference procedure of the Joint Committee for Traceability in Laboratory Medicine(JCTLM),and the sources of uncertainty components were identified. The evaluation of uncertainty components was processed,and then a combined standard uncertainty was calculated. Finally,an expanded uncertainty was obtained.ResultsThe TBil average concentration of 2013 RELA-A sample was 52.30μmol/L,the combined standard uncertainty was 0.67μmol/L,the 95% confidence interval was taken,and the coverage factor(k)was 2. The expanded uncertainty was 1.34μmol/L. The TBil average concentration of 2013 RELA-B sample was 81.60μmol/L,the combined standard

  7. 不同光谱的发光二极管阵列光源照射对体外游离胆红素光化学降解效应的影响%Effect of Various Light-emitting Diode Arrays on the Efficacy of Unconjugated Bilirubin Photochemical Reaction: a Randomized Trial in Vitro

    Institute of Scientific and Technical Information of China (English)

    胡江; 李晓原; 赖兴强; 刘建中; 吴俊超; 唐琳

    2011-01-01

    Objective: To probe into effect of light-emitting diodes (LED) irradiation with differ light spectrum on the unconjugated bilirubin degradation in vitro. Methods: 500 (xL bilirubin solution of 205.2μmol/L was put into 5 mL Pyrex tube to be one sample, and 54 samples were divided into 3 groups, and then irradiated with blue, blue-green and green LEDs of identical irradiance intensity for time intervals: 0 h,0.5 h,l h,2 h,4 h,8 h separately. At last, the absorbency of each sample was determined by modified J-G assay. Results: Under the irradiation of blue, blue-green and green LEDs, the bilirubin degradation increased significantly in the irradiated groups compared to that of the control (P < 0.05), and the most effective was blue LEDs. Conclusions: Light spectrum is a key factor to influence the efficacy of LED phototherapy, and the optimal is blue (465±20) nm.%目的:探讨三种不同光谱范围的发光二极管(LED)阵列光源对体外游离胆红素降解效应的影响.方法:将500μL浓度为205.2 μmol/L的胆红素标准液封入5 mL的耐热玻璃管制成一个样本管.将所有共54个样本管分为三组,分别经相同光照强度的蓝光、蓝绿混合光和绿光LED阵列照射0h、0.5 h、1 h、2 h、4h和8h,然后通过咖啡因法检测胆红素溶液的吸光度值.结果:与空白对照组比较,蓝光、蓝绿混合光和绿光LED光照均对胆红素有明显的降解作用(P<0.05);其中又以蓝光LED的光化学降解效应最强.结论:光谱是影响新生儿黄疸LED光疗疗效的重要参数,并且蓝光(465±20)nm为LED光疗较适宜光谱范围.

  8. Multivariate analysis of the newborn hearing screening results and high bilirubin levels%新生儿听力筛查结果及高胆红素血症与多因素影响的分析

    Institute of Scientific and Technical Information of China (English)

    何霞; 张洪; 徐群; 谢朝红; 金露

    2014-01-01

    Objective To analyze the newborn hearing screening results and hyperbilirubinemia(HBB) and various risk factors impact on the pass rate of newborn hearing screening .Method Data from 2008 to 2012 in our hospital was reviewed ,during which the newborn hearing screening data from the obstetric and NICU ,including normal full-term newborns from obstetrics was total of 2677 cases (5354 ears) ,newborns suffer from hyperbilirubinemia from NICU ,368 cases with hyperbilirubinemia based on the hearing risk factor was divided into pure hyperbilirubinemia group (244 cases ,488 ears) ,HBB with premature delivery low birth weight group (22 cases ,44 ears) ,with hyper-bilirubinemia and pneumonia (35 cases ,70 ears) ,hyperbilirubinemia with asphyxia group (26 cases ,52 ears) ,HBB to merge two or more other risk factors group (41 cases ,82 ears) ,each group adopt transient evoked oaes (TEO-AE) instrument for hearing screening ,all failed receive another screening after 42 days later ,hearing loss in high-risk children sifting through or not require joint automatic brainstem response (AABR) examination 42 days after . The result was the preliminary analysis report .Result At the beginning of each sieve monaural pass rate is respec-tively :normal newborn group 92 .32% ,pure HBB disease group 87 .09% ,high bilirubin merge the preterm group 81 .82% ,with hyperbilirubinemia and pneumonia in 78 .57% ,75% with hyperbilirubinemia and suffocation ,hyper-bilirubinemia merged two or more other risk factors group was 64 .63% .hyperbilirubinemia hearing screening in children with passing rate significantly lower than That of normal group ,the hyperbilirubinemia merged other risk factors ,on the basis of their hearing screening passing rate fall further .There was significantly difference (P<0 .05) ,and combined to increase two or more risk factors ,the passing rate decreased more significantly (P<0 .01) . Conclusion HBB blood disease in children with hearing loss risk is significantly higher

  9. 新生儿小时经皮胆红素百分位曲线图预测高胆红素血症价值的多中心临床研究%Predictive value of hour-specific transcutaneous bilirubin nomogram for neonatal hyperbilirubinemia: a national multicenter study

    Institute of Scientific and Technical Information of China (English)

    新生儿高胆红素血症临床研究协作组

    2015-01-01

    Objective To assess the predictive value of hour-specific transcutaneous bilirubin (TcB) nomogram for subsequent neonatal hyperbilirubinemia.Method Thirteen tertiary class-A hospitals (including two hospitals respectively in the northeastern, northern, eastern, south, northwest, southwestern regions of China, and one in central region) participated in this multicenter study between January 1 and December 31, 2013.All TcB measurements were obtained from healthy term and near-term newborns (gestational age ≥35 weeks, birth weight ≥ 2 000 g) by the JM-103 bilirubinometer between 0 and 168 postnatal hours.Developed an hour-specific TcB bilirubin nomogram with these data.Newborns were divided into 4 groups based on the predischarge bilirubin "risk zone" (≤ P40, > P40-P75 , > P75-P95 , and > P95 as low, low-intermediate, high-intermediate and high risk zones on the hour-specific bilirubin nomogram) to predict subsequent hyperbilirubinemia.Selected bilirubin measurements of three time quantums (25-48 h,49-72 h, 73-96 h) as a predictor for the respective danger zone, and adopted ROC curve to assess the predictive ability of the TcB nomogram.Result Data from 19 601 healthy term and near-term newborns,and 2 673 cases with neonatal hyperbilirubinemia were collected.The prevalence was 13.6%.The P40, P75,and P95 peak percentile value of the hour-specific TcB nomogram was 167, 206, 253 μmol/L,respectively.The rate of rise in TcB was highest during the first 24 h of age, and the 95th percentile curve was faster than the P40 and P75 percentile curves.The areas under the ROC curves of 25-48 h, 49-72 h and 73 -96 h were respectively 0.752 0, 0.834 4, 0.856 1.During 25-48 h, 49-72 h and 73-96 h after birth, the TcB before discharge were in the high-risk zone, its prevalence was 49.4%, 67.3% , 80.4%, its likelihood ratio was 6.20, 13.0, and 27.8, respectively.Conclusion The constructed TcB nomogram shows a good predictivity for hyperbilirubinemia.%目的 评价

  10. Estudo comparativo entre a medida plasmática e transcutânea de bilirrubina em recém-nascidos Factores asociados a la hipotermia durante transporte intrahospitalario en pacientes internados en una unidad de terapia intensiva neonatal Comparative study between plasma and transcutaneous bilirubin measurements in newborns

    Directory of Open Access Journals (Sweden)

    Patrícia Povaluk

    2011-03-01

    postnatal y presencia de factores de riesgo para hiperbilirrubinemia significativa. RESULTADOS: La asociación entre bilirrubina plasmática y transcutánea, en el momento de la indicación y después de 24 horas de fototerapia en las regiones frontal y esternal fue muy homogénea, debido a la fuerte correlación y los intervalos de confianza estrechos, tanto a 95% como a 99%. Se observó, además, respecto a la medida transcutánea en el área cubierta, 24 horas después del inicio de la fototerapia, la medida en el área esternal presentó correlación más fuerte con la plasmática (r=0,8599; p=0,0001. Las variables del RN analizadas no interfirieron significativamente en las medidas de bilirrubina. CONCLUSIÓN: Las dosificaciones transcutánea y plasmática presentan correlación fuerte antes de la fototerapia en las regiones frontal y esternal. Tras 24 horas de la fototerapia, la medida transcutánea esternal en área cubierta presentó mejor correlación.OBJECTIVE: To compare transcutaneous and plasma bilirubin measurements before and during phototerapy, on exposed and covered body areas, and to verify the association of the obtained levels with neonatal characteristics. METHODS: This cross-sectional study enrolled 44 newborn infants from April to October 2008. Simultaneous plasmatic and transcutaneous (frontal and sternal regions bilirubin assays were performed before and 24 hours after the beginning of phototerapy. On frontal and sternal regions, a small cover was placed and transcutaneous measurement was obtained from covered and exposed adjacent areas. The association between the measurements and neonatal weigh, sex, race, gestational and postnatal ages and risk factors for severe hyperbilirubinemia was calculated. RESULTS: There was a strong correlation between plasma and transcutaneous bilirubin assays measured in the frontal and sternal regions before the phototerapy, with narrow 95 and 99% confidence intervals. The covered sternal area presented the strongest

  11. Transcutaneous Bilirubin Levels in the First 120 Hours in Term and Near-Term Neonates%足月儿和近足月儿出生后120小时内经皮胆红素变化趋势

    Institute of Scientific and Technical Information of China (English)

    李新萍; 吴峰; 常丽; 陈卫平

    2013-01-01

    目的:提供足月和近足月新生儿出生后120h内的经皮胆红素(TcB)数据,并绘制新生儿TcB水平评估曲线图.方法:2009年8月至2012年1月在湖北省襄阳市妇幼保健院出生的2 373例新生儿中获得10 136个TcB值,所选新生儿胎龄≥35周,出生体重≥2 000 g,采用经皮胆红素仪(JH20-1C型)测量出生后6~120 h的TcB值,出生后24h内每6h测量1次,之后每12 h测量1次,每例新生儿至少有4次测量值,计算每一时段的TcB百分位数并绘制曲线图.结果:TcB百分位曲线图反映了新生儿自出生后至120 h内TcB水平,本研究经皮胆红素峰值出现时间为日龄3~5d,与国内部分研究资料相似,但百分位曲线值较高.结论:经皮小时胆红素水平用于评估新生儿高胆红素血症具有一定的价值,TcB百分位曲线图可用于对新生儿高胆红素血症进行有效的评估.%Objective: To provide the data on transcutaneous bilirubin (TcB) levels in the first 120 postnatal hours, and to develop an hour-specific bilirubin nomogram for term and near-term neonales. Methods: Ten thousand one hundred and thirty-six TcB values were collected from 2,373 neonates (gestational age≥35 weeks and birth weight ≥2,000 g) who were bom in our hospital from August 2009 to January 2012. All measurements were performed with the JH20-1C bilirubinometer at designated times from 6 to 120 postnatal hours. From the first postnatal day, TcB determinations were performed every 6 hours and thereafter every 12 hours up to the age of 120 hours. At least 4 measurements were obtained from each neonate. TcB percentiles for each designated time were calculated and used for the development of an hour-specific nomogram. Results: The TcB nomogram reflected the TcB levels in healthy neonales up to the 120 postnatal hours. In this study, transcutaneous bilirubin peak appeared in the third to fifth postnatal day. Conclusions: The hour-specific transcutaneous bilimbin nomogram was valuable in

  12. The value of BAEF in early diagnosis of acute bilirubin encephalopathy in newborn%脑干诱发电位技术在新生儿急性胆红素脑病早期诊断中的价值

    Institute of Scientific and Technical Information of China (English)

    任常军; 万丽; 李然; 张磊; 郝玲

    2014-01-01

    Objective Acute bilirubin encephalopathy in neonates is the most serious complication of neonatal hyperbilirubinemia, is one of the main causes of neonatal death and disability. Clinical early diagnosis, early treatment can improve the prognosis in children. Methods Brainstem auditory evoked potential (BAEF) was detected on two patients (40 patients with ABE, 40 cases of normal controls, all full-term) in the state of sleep in children and analysis the difference between the two groups ,all testing was completed by experienced Department of ENT full-time technician in charge,SPSS15.0 statistical analysis software was took for data analysis (using rank sum test method). Results There was significant difference between the two groups of neonatal latency of wave I, latency of waveⅤ, interpeak time , acute bilirubinⅠ-Ⅴencephalopathy group was significantly longer than that of the control group. Conclusions The BAEF detection is the sensitive index of brainstem damage , can objectively and sensitively reflect the function of the central nervous system , can reflect the functional status of cochlear and brainstem structures , often brainstem was slightly damaged but no clinical symptoms and signs , BAEP has changed significantly , so the conventional BAEP examination performed on patients with hyperbilirubinemia help to find bilirubin brain damage as early as possible,and prevent the occurrence of bilirubin encephalopathy.%目的:新生儿急性胆红素脑病(ABE)是新生儿高胆红素血症最严重的并发症,是导致新生儿死亡、致残的主要原因之一。临床上早期明确诊断,尽早治疗可以大大改善患儿的愈后。方法:通过对两组患儿(ABE患儿40例,正常对照儿40例,均为足月儿)脑干听觉诱发电位(BAEF)结果的分析,找出两组间的差别进行比较,全部检测均由经验丰富的耳鼻喉科专职主管技师在患儿睡眠状态下完成,结果用SPSS 15.0统计分析软

  13. 射血分数正常的心力衰竭患者血清胆红素水平与舒张功能不全的相关性研究%The relation study between serum bilirubin and diastolic cardiac dysfunction in heart failure with preserved ejection fraction patients

    Institute of Scientific and Technical Information of China (English)

    袁博; 任晖; 巩洁; 李静; 郑时康; 王甲文; 王蕊; 高天林

    2015-01-01

    目的:探讨射血分数正常的心力衰竭( HFpEF)患者血清胆红素水平与舒张功能不全的相关性。方法2014年1—12月诊治HFpEF患者80例为HFpEF组,根据超声检查结果分为3个亚组:轻度亚组13例、中度亚组44例、重度亚组23例,另选取健康体检者30例为健康对照组。通过心脏超声测量左房内径、左室舒张末期内径、左室短轴缩短率、左室射血分数、左室舒张末期容积、E峰、A峰、舒张早期二尖瓣环运动速度,并计算E/Ea值。综合统计分析胆红素水平与心脏超声各项结果的关系。结果中度亚组和重度亚组HFpEF患者总胆红素( TB)和直接胆红素(DB)均明显高于健康对照组(TB:t 中度=1?.732, P =0.045;t 重度=2.032, P =0.025。 DB:t 中度=2.732, P =0.007;t 重度=2.036, P =0.026),HFpEF患者组内比较可见,重度亚组HFpEF患者血清TB和DB明显低于轻度亚组(TB:t =1.715, P =0.047;DB:t =2.032, P =0.024)。 HFpEF组患者Ea峰明显低于健康对照组( t =0.010, P =0.017),而E/Ea高于健康对照组( t =0.022, P =0.032)。重度亚组患者Ea峰和E/Ea均明显差于轻度亚组(Ea峰:t =2.079, P =0.023;E/Ea:t =2.411, P =0.011)。 TB及DB水平与E/Ea呈负相关( r =-0.401, P =0.040;r =-0.434, P =0.030)。通过多元逐步回归分析表明,血清TB水平可作为自变量能分别进入E峰( P =0.003)和Ea峰( P =0.003)为因变量的线性回归模型方程。结论胆红素水平与心室舒张功能密切相关,可能是影响HFpEF发生机制中的重要危险因素。%Objective To investigate the correlation between serum bilirubin level and diastolic dysfunction in pa -tients with heart failure (HFpEF) with normal ejection fraction.Methods From 2014 January to 2014 December, 80

  14. 综合护理对蓝光照射治疗新生儿高胆红素血症及神经心理发育的影响%The influence of comprehensive nursing on bilirubin levels and neuropsychological development of neonatal hyperbilirubinemia with blue light irradiation

    Institute of Scientific and Technical Information of China (English)

    王新刚

    2014-01-01

    目的:探讨综合护理在蓝光照射治疗新生儿高胆红素血症中的应用效果。方法将80例高胆红素血症的新生儿随机分为观察组和对照组各40例,两组均采用蓝光照射治疗,对照组采用常规护理,观察组在对照组的基础上采用综合护理,比较两组的治疗效果及神经心理发育情况。结果观察组的胎便初排时间、胎便转黄时间短于对照组,每日奶量、排便次数、睡眠时间多于对照组,护理后5d的胆红素、黄疸指数低于对照组,出生5d后的体重高于对照组,差异均有统计学意义(P<0.05);观察组出院后的躯体运动、行为能力、语言表达等神经心理发育评分高于对照组,护理满意度高于对照组,差异均有统计学意义( P<0.05)。结论综合护理能提高蓝光照射治疗新生儿高胆红素血症的效果,改善新生儿的预后。%Objective To explore the effect of comprehensive nursing on bilirubin levels and neuropsychological development of neonatal hyperbilirubinemia with blue light irradiation.Methods A total of 80 cases of newborns with hyperbilirubinemia were randomly di-vided into the observation group and the control group , the control group was received routine nursing care , two groups were both used the blue light treatment , the control group was received routine nursing care , the observation group was given comprehensive nursing.Two groups were compared with treatment effect and neuro psychological development.Results The first meconium time , meconium turning yellow in the observation group were less than those in the control group , the daily milk yield , defecation frequency , sleep time were more than those in the control group, bilirubin, jaundice index 5D after nursing were lower than those in the control group , weight 5d after born was higher than that in the control group , nursing satisfaction was higher than that in the control group , with

  15. 精神分裂症患者血清白蛋白、尿酸、胆红素和谷酰转肽酶水平的研究%A study on serum levels of albumins,uric acid,bilirubin and γ-glutamyl transpeptadase in schizophrenia patients

    Institute of Scientific and Technical Information of China (English)

    温盛霖; 程敏锋; 王厚亮; 岳计辉; 王宏; 钟志勇; 郑俩荣

    2012-01-01

    目的 探讨精神分裂症患者是否存在抗氧化能力降低及氧化应激损伤.方法 对精神分裂症住院患者208例,用BPRS评定疾病的严重程度,PANSS量表评估精神症状,成人韦氏智力量表评定智商;检测血清白蛋白、尿酸、胆红素和谷酰转肽酶的血浆水平.另选84名正常人作对照.结果 (1)患者组白蛋白、胆红素和谷酰转肽酶[(44.07±3.78)g/L,(11.57±6.84)μmol/L,(20.26±10.87)U/L]水平显著低于对照组(P0.05].(2)女性患者的血浆尿酸、胆红素和谷酰转肽酶[(293.80±92.63)μmol/L,(10.01±4.85)μmol/L,(17.68±8.36)U/L]水平均显著低于男性患者(P0. 05]. Serum levels of uric acid, bilirubin and γ-glutamyl transpeptadase were significantly tower in female patients than those in male patients[ (293. 80 ±92. 63) μmol/L, ( 10. 01 ±4. 85) μmol/L, ( 17. 68 ± 8. 36)U/L,P < 0. 05]. Serum levels of albumins, bilirubin and γ-glutamyl transpeptadase were significantly tower in female patients [ (42.92 ±4. 17) g/L, (10. 01 ±4. 85) μmol/L, (17. 68 ±8. 36) U/L] than those in female control (P < 0. 05) ,but serum uric acid levels [ ( 293. 80 ± 92. 63 ) μmol/L ] was significantly higher than those in female control. The negative symptom subscore and total score of BPRS were negatively correlated with serum levels of albumins (r = - 0. 267 , P = 0. 023 , r= - 0. 243 , P = 0. 043 ) . The VIQ and PIQ were positively correlated with serum of levels of 7-glutamyl transpeptadase ( r = 0. 388 , P = 0. 001; r = 0. 348, P = 0. 004 ). Conclusions Female patients with schizophrenia have abnormal free radical metabolism and oxidative stress. The tower glutamic acid and oxidative stress may be involved in the palhology of schizophrenia by means of effecl of cognitive function.

  16. 母乳性黄疸患儿血清总胆红素和胆汁酸测定的临床意义%Clinical Significance of Detecting the Total Bilirubin and Total Bile Acid of Breast-Feeding Jaundice Infants

    Institute of Scientific and Technical Information of China (English)

    付纳新; 徐建英; 刘俊芬

    2013-01-01

    Objective To explore clinical significance of detecting the total bilirubin (TBil) and total bile acid(TBA)of breast-feeding jaundice infants. Methods From January 2011 to April 2012,a total of 66 infants with breast-feeding jaundice were included in the study(research group,n = 66) ,meanwhile,30 health infants were also accepted as control group(n = 30). Ankle saphenous vein blood sampling(2 mL) was taken from each infants. Serum TBil,TBA and cholesterol (CHO) were detected respectively in two groups. The study protocol was approved by the Ethical Review Board of Investigation in Human Being of Baotou Third Affiliated Hospital. Informed consent was obtained from the parents of each participating neonate. Results Serum TBil,TBA and CHO of neonates were significant higher in research group than those of control group (P0.05)(本研究遵循的程序符合本院人体试验委员会所制定的伦理学标准,得到该委员会批准,分组征得受试对象监护人的知情同意,并与之签署临床研究知情同意书).结果 两组新生儿血清TBil,TBA和CHO水平比较,差异均有统计学意义(P<0.001).研究组新生儿血清TBil与TBA水平呈显著正相关关系(r=0.412,P<0.05).结论 母乳性黄疸新生儿可能自身存在胆汁淤积.

  17. 2型糖尿病下肢血管病变患者血清总胆红素水平及与血小板参数的关系%Relationship between serum total bilirubin level,diabetic nephropathy and platelet parameters in patients with T2DM accompanied with peripheral arterial disease

    Institute of Scientific and Technical Information of China (English)

    晏丕军; 冯健; 张志红; 徐勇; 欧阳芳; 何建华; 李佳; 马红艳

    2016-01-01

    目的:探讨2型糖尿病(T2DM)下肢血管病变(PAD)患者血清总胆红素(TBIL)水平与糖尿病肾病(DN)和血小板(PLT)参数的关系及其在PAD发病中的作用机制。方法145例 T2DM 患者,根据踝肱指数( ABI)分为下肢血管病变组( PAD 组,64例)和非下肢血管病变组( NPAD组,81例),采用酶法测定血清TBIL水平,并分析血清TBIL水平与ABI、胱抑素( Cys)-C、尿微量白蛋白/尿肌酐( UACR)、预估肾小球滤过率(eGFR)、PLT参数和血糖、血脂、血压等指标的关系。结果 PAD组血清 TBIL水平明显低于 NPAD 组〔(10.25±3.01)vs(12.68±3.51)μmol/L,P<0.01〕。相关分析显示PAD患者血清TBIL水平与直接胆红素( DBIL)、间接胆红素( IBIL)、血小板( PLT)计数、ABI和eGFR呈明显正相关( P<0.05或P<0.01),与PLT平均体积(MPV)、PLT比容(PCT)、血肌酐(Scr)、Cys-C和UACR呈明显负相关(P<0.05或 P<0.01)。多元逐步回归分析显示, ABI、Cys-C和MPV是影响PAD患者血清TBIL水平的独立相关因素。结论 PAD患者血清TBIL与DN、PLT参数有关,其可能通过增加氧化应激、炎症反应和胰岛素抵抗,引起血管内皮功能失调、血栓形成和动脉粥样硬化等,进而参与PAD的发生发展。%Objective To investigate the change of serum total bilirubin ( TBIL) level and evaluate the relationship of TBIL with di-abetic nephropathy (DN) and platelet parameters in patients with type 2 diabetes mellitus (T2DM) accompanied with peripheral arterial dis-ease(PAD),andexploretheroleandmechanismsofTBILinPADpatients.Methods 145T2DMpatientsweredividedintoPADgroup (64 cases) and NPAD group (81 cases) according to ankle brachial index (ABI).Fasting serum TBIL levels were measured by enzymatic method.The relationship between serum TBIL levels,ABI,cystatin(Cys)-C,urine microalbuminuria:creatinine ratio (UACR),estimated glo

  18. Determining Prevalence of Acute Bilirubin Encephalopathy in Developing Countries

    Science.gov (United States)

    2015-11-11

    Demonstrate BIND II Score of >=5, is Valid for Detecting Moderate to Severe ABE in Neonates <14 Days Old.; Demonstrate Community-BIND Instrument, a Modified BIND II, is a Valid and Reliable Tool for Detecting ABE.; Demonstrate That Community-BIND Can be Used for Acquiring Population-based Prevalence of ABE in the Community.

  19. Correlation of blood lipids,bilirubin,uric acid and leukocyte subtypes with coronary heart disease%血脂、胆红素、尿酸及不同炎性细胞与冠心病的相关性分析

    Institute of Scientific and Technical Information of China (English)

    张灿; 丁晓梅

    2011-01-01

    Objective To explore the relationship between blood lipids, bilirubin, uric acid and leukocyte subtypes and coronary heart disease. Methods 142 patients who underwent coronary angiography were allocated into three groups:one-vessel desease group( 58 cases) ,two-vessel desease group(46 cases)and multi-vessel desease group (38 cases) ,60 patients who had normal coronary artery were chosen as control group. And the SYNTAX score was calculated,the blood lipids,bilirubin,uric acid and leukocyte subtypes were tested on admission. Results TG,LDLC and UA increased with the coronary artery lesions( P < 0.05 ) while TBiL, IBiL decreased ( P < 0.05 ). The leukocytes, monocytes and the ratio of neutrophils and lymphocyte (NLR)increased with the coronary artery lesions (P< 0.05 ) while lymphocytes decreased ( P<0.05 ). Multiple linear regression analysis showed that TG, HDL-C and UA had independent association with SYNTAX score ( the partial correlation coefficient were 0.264,-0.275,0.205, respectively, P < 0.05 ), leukocytes and NLR had indenpent association with SYNTAX score ( the partial correlation coefficient were 0.587,0.342 respectively ,P<0.05 ). Conclusion Serum TG, UA and blood leukocytes and NLR had some relationship with coronary actery lesions and its degree.%目的 探讨血脂、胆红素、尿酸及不同炎性细胞变化在冠状动脉粥样硬化性心脏病患者中的临床意义.方法 选择142例经冠脉造影证实为冠状动脉粥样硬化性心脏病的患者,按造影结果分为单支病变组(58例),双支病变组(46例)和多支病变组(38例),并设60例冠脉造影正常患者为对照组,按照SYNTAX评分系统衡量冠脉造影结果.入院时测其白细胞计数、白细胞亚型计数及比例、中性粒细胞计数/淋巴细胞计数比值(NLR)及血脂、胆红素和尿酸,分析患者血脂、胆红素、尿酸及不同炎性细胞变化的临床意义及其与SYNTAX评分的相关性.结果 随着冠脉病变支数

  20. Clinical Study of Serum Bilirubin in Patients with Coronary Heart Disease and Low Density Lipoprotein Cholesterol Level%冠心病患者血清胆红素和低密度脂蛋白胆固醇水平的临床研究

    Institute of Scientific and Technical Information of China (English)

    赖秀梅

    2013-01-01

    Objectives 35-55 year-old middle-aged men with coronary heart disease (CHD) patients and male healthy subjects, serum bilirubin (BIL) and low-density lipoprotein cholesterol (LDL-C) levels were retrospectively analyzed to explore the middle-aged menserum BIL and LDL-C levels and CHD. Methods Fuxin Second Hospital in January 2012 to November 2012 and confirmed 72 cases of CHD 35-55 year-old middle-aged male patients as the experimental group, 72 cases of the same age male healthy subjects served as controls group. Using automatic biochemical analyzer to detect various groups of subjects serum BIL and LDL-C level, were statistically analyzed. Results CHD patients serum TBIL and, DBIL IBIL concentration were lower than the control group, LDL-C concentration higher than that in the control group, a statistically significant difference (P<0.05). Serum TBIL, the DBIL and, IBIL level of LDL-C concentration were negatively correlated (-1

  1. 对血小板与胆红素乘以国际标准化比率的比值预测重型肝炎转归的验证%Verification of the prediction outcome of the ratio of platelet and bilirubin multiplied by the international for prognosis of severe hepatitis

    Institute of Scientific and Technical Information of China (English)

    梁柱石; 程璐宁; 钟大明; 黄献球; 周德玫; 莫穆隆; 甘楚林; 陈伟坚; 黄俊; 吴燕; 周甦

    2014-01-01

    Objective To investigate the value of model of ratio on platelet (PLT) divided by the product of bilirubin (TBil) and prothrombin international normalized ratio (PBI) for the prognosisi of severe hepatitis. The ratio of platelet and bilirubin, international normalized ratio was equal to the PLT/(TBil × INR). Methods The severe hepatitis cases in two different hospitals were measured by retrospective application of PBI and the model for end-stage liver disease (MELD), which including 64 cases of survival group and 50 cases of deteriorated group. The PBI and MELD score of patients in the two groups in early, middle, late for hospitalized were analyzed. The PBI score, the MELD score and area under the curve (AUC) of receiver operating characteristics (ROC) for the degradation rate were compared between the two groups. Results The mean of PBI score of survival group and death group during the initial hospitalization, deterioration in the intermediate and the end stage were (19.22 ± 17.83) and (10.36 ± 13.97), (32.72 ± 29.20) and (7.26 ± 6.25), (114.22 ± 144.75) and (5.34 ± 4.58), respectively;all with signiifcant differences compared to the same period (P all<0.01). The mean MELD score were (24.28 ± 4.82) and ( 31.14 ± 7.28), (20.97 ± 5.85) and (30.96 ± 8.85), (16.50 ± 5.71) and (34.50 ± 10.32), all with signiifcant differences compared to the same period (P all<0.01).Improved survival group and death group, the change tendency of PBI score and MELD score were reverse. During the early, intermediate and end stages of hospitalization, PBI score and MELD score in the diagnosis of patients with worsening ROC curve area of death were 0.731 and 0.791, 0.818 and 0.795, 0.979 and 0.887, respectively. During the early hospitalization period, the best critical point between the PBI and MELD score used to be predicted the sensitivity of deteriorating death, which were 72.00% and 80.00%, respectively;the specificity were 70.31%and 67.19%, the accuracy were 71.05%and

  2. Combined CVVH-bilirubin adsorption therapy on patients with hyperbilirubinemia%组合式连续性静脉-静脉血液滤过-胆红素吸附系统在高胆红素血症治疗中的应用

    Institute of Scientific and Technical Information of China (English)

    朱冬冬; 龚德华; 徐斌; 刘志红; 季大玺

    2011-01-01

    血酶原时间(PT),国际标准化比值(INR)均较治疗前延长。组合法单次治疗后血尿素氮(BUN),血清肌酐(SCr),谷丙转氨酶(ALT),谷草转氨酶(AST)均有下降,对TP,ALB,凝血功能无影响。组合法治疗后患者收缩压、心率,临床APACHEII有所改善,MELD评分改善显著。患者ICU 30d存活率达69%,出院存活率56%。两种方法治疗过程中患者生命体征平稳,无不良事件发生。结论:组合式CVVH-胆红素吸附疗法是一种新型有效的人工肝支持治疗。可显著降低患者胆红素水平,改善生化检查指标及部分临床症状,且患者耐受性好。相较血浆分离灌流方法(常规法),其对患者的白蛋白及凝血功能无影响,且可改善患者APACHE Ⅱ及肝功能MELD评分,是一种值得在临床推广应用的人工肝支持疗法。%Objective: To observe the clinical efficacy and safety of combined CVVH-bilirubin adsorption treatment on patients with hyperbilirubinemia and compare to the traditional plasma separation perfusion. Methodology; Sixteen cases with hyperbilirubinetnia received total 55 sessions artificial liver support therapy ( ALS).All of them weretreated with conventional plasma perfusion (conventional method) for the first treatment. The rate of blood flow was set at 100 ~ 120 ml/min and the rate of plasma separated was set at 30 ~ 40 ml/min. Then they were treated with combined CVVH-bilirubin adsorption (combination method). The rate of blood flow was set at 200 ~ 250 ml/min and the rate of plasma separated was set at 90 ml/min. Separated blood plasma components were filtrated by the CVVH filter AV600 when ultrafiltration rate was set at 66 ml/min. Then concentrated plasma components were adsorpted by BRS-350 adsorption column and they were reinfusioned in vivo. At the same time bicarbonate replacement fluid at the speed of 4 000 ml/hr with pre-dilution mode was input before plasma component separator EC40W. ALS was

  3. 血清总胆红素、γ-谷氨酰转移酶在2型糖尿病患者中的变化及意义%Changes and significance of serum total bilirubin,gamma glutamyltransferase in patients with type 2 diabetes

    Institute of Scientific and Technical Information of China (English)

    吴文佳; 蒋晓红; 姜海燕; 华飞

    2013-01-01

    目的 分析2型糖尿病无并发症、有血管并发症患者血清总胆红素(TBil)、γ-谷氨酰转移酶(GGT)水平的变化,探讨它们与2型糖尿病血管并发症的相关性.方法 采用全自动生化分析仪测定42例健康体检者(对照组)、64例2型糖尿病无并发症患者(糖尿病无并发症组)、81例2型糖尿病有血管并发症患者(糖尿病有并发症组)血清TBil、GGT、肝功能、血脂等,并比较.结果 糖尿病有并发症组TBil为(7.89±4.81)μmol/L,GGT为(29.81±14.97) U/L,对照组TBil为(10.42±3.55)μmol/L,糖尿病无并发症组TBil为(11.30±4.16)μmol/L,GGT为(47.00±38.57) U/L,糖尿病有并发症组TBil显著低于对照组和糖尿病无并发症组(P<0.05),GGT显著低于糖尿病无并发症组(P<0.05).Pearson相关分析提示,24h尿蛋白定量、尿微量白蛋白肌酐比值与血清TBil呈负相关(P<0.05).Logistic回归分析显示GGT (OR=0.965)是糖尿病血管并发症的保护因素.结论 血清TBil、GGT可能与2型糖尿病患者血管并发症的发生、发展相关.%Objective To analyze the changes of serum total bilirubin (TBil) and gamma glutamyltransferase (GGT) in patients with type 2 diabetes newly diagnosed without complications and explore their relationship with vascular complications of type 2 diabetes.Methods The levels of serum TBil and GGT were determined by automatic biochemical analyzer in 42 healthy person (control group),64patients with type 2 diabetes without complications (diabetes without complications group) and 81 patients with type 2 diabetes with vascular complications (diabetes with complications group).Results The levels of serum TBil and GGT were (7.89 ± 4.81) μ mol/L and (29.81 ± 14.97) U/L in diabetes with complications group.The level of serum TBil was (10.42 ± 3.55) μ mol/L in control group.The levels of serum TBil and GGT were (11.30 ± 4.16) μ mol/L and (47.00 ± 38.57) U/L in diabetes without complications group.The level of serum TBil

  4. Clinical Significance of Serum Bilirubin Detection of Patient with Coronary Heart Disease

    Institute of Scientific and Technical Information of China (English)

    TAOLi; LUORui; ZHUANGDiankui

    2004-01-01

    To explore the relation between serum bilinabin and eoronary heart disease Methods Compare the level of serum bilinabin among patients with eoronary heart disease, patients with other disease and normal persons. Results The level of serum bilinabin of patients with coronary heart disease is higher than that of normal persons. Conclusion The reduction of density of serum bihrubin is one of the independent risk factors of coronary heart disease.

  5. Molecular mechanisms of microglia reactivity to bilirubin : evaluation of potential neurological effects

    OpenAIRE

    Silva, Sandra Isabel Leitão da, 1984-

    2010-01-01

    As células da micróglia são sensores activos de dano no cérebro e rapidamente adquirem estados funcionais de activação adequados à restauração da homeostase. Durante o período neonatal o cérebro está mais vulnerável a certas lesões tais como as induzidas pela hiperbilirrubinémia, uma condição comum no recém-nascido, na qual níveis excessivos de bilirrubina não conjugada (BNC) podem atingir e lesar o cérebro. A toxicidade desencadeada pela BNC em neurónios e astrócitos já foi al...

  6. Interplay of co-inherited diseases can turn benign syndromes in a deadly combination : haemoglobinopathy and bilirubin transport disorder

    NARCIS (Netherlands)

    Stolmeijer, T. M.; van den Berg, A. P.; Koeze, J.; Gouw, A. S. H.; Croles, F. N.; Sieders, E.; Zijlstra, J. G.

    2015-01-01

    We present a case about a 25-year-old male patient suffering from a rare genetic disorder called Mizuho haemoglobin. He was admitted to the Intensive Care Unit with acute liver and renal failure. During admission he also developed a cardiac tamponade twice. Finally he received a liver transplantatio

  7. Coupled plasma filtration adsorption reduces serum bilirubine in a case of acute hypoxic hepatitis secondary to cardiogenic shock.

    Science.gov (United States)

    Caroleo, Santo; Rubino, Antonino S; Tropea, Francesco; Bruno, Orlando; Vuoto, Domenico; Amantea, Bruno; Renzulli, Attilio

    2010-10-01

    Hypoxic hepatitis (HH) is a severe complication of postoperative low output syndrome, associated with high mortality rates despite appropriate drug therapy. Recently several extracorporeal supportive techniques have become available. We describe the case of a 70-year-old woman who developed HH secondary to cardiogenic shock after cardiac surgery. CPFA proved to be a valid tool for concomitant hemodynamic support and organ replacement therapy.

  8. Evaluating the Effect of Mother’s Diet in the Third Trimester of Pregnancy on the Level of Total Bilirubin in Newborns

    OpenAIRE

    A Erjaee; Habibi, A.; Z Mazloum; M Niknam; E Ghashghaie

    2016-01-01

    Introduction: Neonatal jaundice is regarded as a common problem in newborns observed in 60% of term and80% of preterm neonates. Maternal nutrition before and during pregnancy may directly influence the mothers’ health, incidence of pregnancy-related complaints, fetal development as well as risks during pregnancy. Maternal nutrition has been traditionally held to produce an effect on neonatal jaundice and it is a deep-rooted belief that hot natured  food can increase the rise of bil...

  9. Determination of Effect of Low Dose Vs Moderate Dose of Clofibrate on the Decreasing in Serum Bilirubin Level in the Term Healthy Neonate

    OpenAIRE

    Mohammad Ashkan Moslehi; Narges Pishva

    2007-01-01

    Objective: This study was performed to determine the effect of low doses (25 mg/Kg) vs. moderate doses (50 mg/Kg) of clofibrate in treatment of non-hemolytic hyperbilirubin¬emia in healthy term neonates. Material & Methods: A clinical randomized controlled trial was performed in three groups of healthy term neonates. One group was treated with a single low dose of clofibrate (25 mg/Kg) while another group received a single moderate dose (50mg/kg) both orally plus phototherapy; the results wer...

  10. Evaluating the role of indirect bilirubin, urobilinogen and Shine AND Lal index as an alternative screening tool for beta thalassemia minor

    OpenAIRE

    Ridham A. Khanderia; Amit H Agravat

    2015-01-01

    Background: Beta thalassemia continues to be a significant burden to Western India particularly Saurashtra region of Gujarat. Since cost of treatment is high emphasis must be shifted from treatment to prevention that includes mass screening as most effective tool including RBC indices and peripheral blood smear. These tests have limited availability, re quire sophisticated equipments and are expensive. Thus, there is need for simple, low cost and reliable test which can be used in absence o...

  11. Voltammetry and single-molecule in situ scanning tunneling microscopy of laccases and bilirubin oxidase in electrocatalytic dioxygen reduction on Au(111) single-crystal electrodes

    DEFF Research Database (Denmark)

    Climent, Victor; Zhang, Jingdong; Friis, Esben Peter;

    2012-01-01

    Laccases (E.C. 1.10.3.2) are multicopper oxidases catalytically active in the oxidation of diphenolics and related compounds by molecular dioxygen. The laccases contain a single-copper type I center and a trinuclear cluster of a single-copper type II and a dinuclear type III center. The oxidation...

  12. 冠心病患者检测血清胆红素的意义%Significance of serum bilirubin detection in patients with coronary heart disease

    Institute of Scientific and Technical Information of China (English)

    李淑翠; 李淑芬

    2004-01-01

    [目的]探讨冠心病患者检测胆红素的意义.[方法]用奥林巴斯640全自动生化分析仪钒酸盐法检测血清胆红素,用酶法检测TC、TCG,用直接法检测HDLC、LDLC,用免疫比浊法检测APOAI、APOB.[结果]冠心病组患者血清胆红素低于对照组,而TCG、LDLG、APOB均高于对照组.[结论]血清胆红素是潜在的防止冠心病的有效物质,故冠心病患者检测胆红素有重要的意义.

  13. THE ANATAGONISM OF BILIRUBIN ON DNA DAMAGE OF ICR MICE DUE TO TCE%胆红素对TCE致ICR小鼠DNA损伤的拮抗作用

    Institute of Scientific and Technical Information of China (English)

    涂程; 邰昌松; 杨青; 黎燕; 王绵珍

    2005-01-01

    目的:研究胆红素对三氯乙烯(TCE)致ICR小鼠肝、肾、外周血DNA损伤的影响.方法:应用单细胞凝胶电泳(SCGE)技术,检测TCE对ICR小鼠肝、肾、外周血细胞DNA损伤作用,同时观察20~200 μmol/L胆红素对TCE所致DNA损伤的保护作用.结果:TCE染毒组肝、肾、血细胞彗星率较对照组增加;胆红素各剂量组SCGE各指标在20~200μmol/L范围内先减小后增大,100μmol/L处最小.结论:100μmol/L左右的胆红素能较好的拮抗TCE对小鼠肾脏细胞DNA损伤.

  14. Diagnosis and Treatment of Unconjugated Hyperbilirubinemia

    NARCIS (Netherlands)

    Schreuder, Andrea Bertilde

    2014-01-01

    Bilirubine is een geel afbraakproduct van heem met tegenstrijdige eigenschappen. In lage concentraties is (ongeconjugeerd) bilirubine een antioxidant, maar in hoge concentraties is het zeer schadelijk voor onze hersencellen. Ophoping van (ongeconjugeerd) bilirubine in ons lichaam kan leiden tot perm

  15. Effect of Urine Bilirubin on the Results of Urobilinogen Tested With Urine Dry Chemistry Analyzer%尿胆红素对干化学法检测尿胆原的影响

    Institute of Scientific and Technical Information of China (English)

    项贵明; 李阳; 蒲晓允

    2007-01-01

    目的 观察尿中胆红素对尿干化学分析仪检测尿胆原的影响.方法 对135例尿干化学分析仪检测尿胆红素和尿胆原均为阳性的标本和17例尿干化学分析仪检测尿胆红素阴性而尿胆原为阳性的标本,以及60例尿干化学分析仪检测尿胆红素和尿胆原均为阴性的标本,进行手工检测方法对比.结果 尿干化学分析仪在检测尿中存在胆红素时可使尿胆原出现假阳性结果.结论 当尿干化学分析仪检测尿胆红素和尿胆原均为阳性且尿胆红素在"++"以上的标本应通过其它检测来确定检验结果.

  16. HPLC determination of bilirubin in paracetamol, caffein, atificial cow -bezoar and chlorphenamine maleate tablets%高效液相色谱法测定氨咖黄敏片中胆红素的含量

    Institute of Scientific and Technical Information of China (English)

    梁云霞; 李杰滨; 谭秀敏; 谭博; 赵悦辉

    2007-01-01

    目的:采用高效液相色谱法对氨咖黄敏片中胆红素进行含量测定.方法:选用Agilent C18分析柱,甲醇-氯仿-1%磷酸溶液(80:12:8)为流动相,检测波长为449 nm,流速1.0 ml/min,柱温30 ℃.结果:胆红素的线性范围为0.008~0.083 μg(r=1.000),平均回收率100.2%.结论:方法准确,回收率好.

  17. Protective effect of bilirubin and natural cow - bezoar on styrene - induced HepG2 cell DNA strand breaks%胆红素及牛黄拮抗苯乙烯所致肝癌细胞株损伤

    Institute of Scientific and Technical Information of China (English)

    魏雪涛; 蒋建军; 尚兰琴; 沈惠麒

    2004-01-01

    目的观察苯乙烯诱导的人肝癌细胞株(HepG2)细胞DNA链断裂损伤以及天然牛黄和胆红素对其损伤的拮抗效应.方法采用单细胞凝胶电泳法观察HepG2细胞体外暴露于苯乙烯出现的DNA链断裂损伤,同时观察天然牛黄和胆红素对于苯乙烯诱导DNA损伤的拮抗作用.结果在细胞存活未受到苯乙烯影响的浓度下,0.2μmol/L的苯乙烯即可诱导HepG2细胞明显的DNA链断裂损伤,彗星细胞频率和DNA迁移距离分别为(9.5±2.1)%和(4.5±0.7)μm.在明显诱导DNA损伤浓度的苯乙烯处理时同时加入天然牛黄或胆红素,发现二者对苯乙烯诱导的DNA链断裂损伤在一定浓度下均有良好的拮抗作用,10 μmol/L的胆红素或天然牛黄与1μmol/L的苯乙烯共同处理时,HepG2细胞的DNA损伤水平基本回复到本底水平.结论苯乙烯能够诱导HepG2细胞出现DNA链断裂损伤,10 μmol/L的胆红素或天然牛黄基本能完全拮抗苯乙烯诱导的DNA链断裂损伤.

  18. Determination of bilirubin in paracetamol,caffein, atificial cow-bezoar and chlorphenamine maleate capsules by RP-HPLC%氨咖黄敏胶囊中胆红素的含量测定

    Institute of Scientific and Technical Information of China (English)

    刘雁鸣; 郑金凤; 杨汉初

    2005-01-01

    目的采用反相高效液相色谱法测定氨咖黄敏胶囊中胆红素的含量.方法采用DiamonsilTMC18色谱柱(4.6 mm×200 mm,5μm),以甲醇-氯仿-1%磷酸溶液(85:13:2)为流动相,流速1.0 mL·min-1,检测波长450nm.结果胆红素在3.97~79.5μg·mL-1峰面积与浓度呈良好的线性关系(r=0.997),平均回收率为99.95%,RSD为0.38%(n=9).结论方法简便、精密度高、重现性好、结果准确可靠.

  19. 术前减黄改善阻塞性黄疸大鼠肝功能的机制研究%The Mechanism of Preoperative Reduce Bilirubin on Improvement of Liver Function of Obstructive Jaundice in Rats

    Institute of Scientific and Technical Information of China (English)

    张清华; 胡章林; 胡景元

    2010-01-01

    目的 探讨术前减黄改善阻塞性黄疸大鼠肝功能的机制.方法 检测阻塞性黄疸大鼠(阻塞10 d)-胆管外引流组(ED组)及对照组(SO组)引流的0、1、4、7、10、14 d的肝功能,并通过反转录-聚合酶链反应法检测两组肝组织胆盐输出泵(BSEP)、多药耐药蛋白2(MRP2)、Na+信赖性的牛磺酸/钠共转运蛋白(NTCP)基因的表达.结果 阻塞10 d后ED组MRP2、NTCP基因表达减弱,与SO组相比差异有统计学意义(P<0.05),但BSEP基因表达略增强,开放引流后ED组肝功能各项指标均明显改善,引流后MBP2、NTCP基因表达明显增强,引流14 d与SO组相比差异无统计学意义(P>0.05).结论 术前减黄改善阻塞性黄疸大鼠肝功能的机制可能是增加单位体积膜转运蛋白表达.

  20. 高血压病患者血清总胆红素浓度与胰岛素抵抗水平的关系%Relationship between serum bilirubin concentrations and insulin resistance in essential hypertension patients

    Institute of Scientific and Technical Information of China (English)

    章建梁; 秦永文; 郑兴; 邱健力; 毛红娟; 龚莉

    2004-01-01

    目的探讨高血压病患者血清总胆红素浓度与胰岛素抵抗、血糖、血脂、尿酸(UA)的关系.方法测定165例高血压病患者的空腹血清总胆红素、血红蛋白(Hb)、UA、总胆固醇、甘油三酯(TG)、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇的浓度,口服葡萄糖耐量试验和胰岛素释放试验测定血浆葡萄糖浓度和血清胰岛素浓度,计算葡萄糖曲线下面积(AUCG)和胰岛素曲线下面积(AUCIN),稳态模式评估法计算胰岛素抵抗指数(H0MA-IR).以HOMA-IR 50%位点,作为判断胰岛素抵抗的切割点,将高血压痛患者分为胰岛素抵抗(IR)组与胰岛素敏感(IS)组.结果血清总胆红素浓度,IR组为(9.3±3.3)μmol/L显著低于IS组(12.0±3.8)μmol/L,与HOMA-IR、腰臀围比、收缩压、Hb、空腹胰岛素、TG、AUCG、AUCIN呈显著相关关系;逐步回归分析显示,HOMA-IR、AUCG与Hb为血清总胆红素浓度的独立预测因子,血脂和UA均非血清总胆红素浓度的独立预测因子.结论与胰岛素敏感的高血压病患者相比,伴胰岛素抵抗的高血压病患者有较低的血清总胆红素水平;高血压病患者血清总胆红素浓度与胰岛素抵抗、血糖与Hb直接相关,与血脂、UA无直接相关.

  1. A Cholesterol-Bilirubinate Gallstone Induced by Fasciola hepatica Infection in Macaca mulatta%猕猴自然感染肝片吸虫诱发胆管结石的形成

    Institute of Scientific and Technical Information of China (English)

    廖国阳; 卢明义; 谢晋

    2000-01-01

    在研究肝片吸虫诱发猕猴自发性胆结石形成的病理学基础上,采用红外光谱分析、原子吸收光谱分析和组织化学染色对胆结石的成分及结构进行了测定,初步探讨了本病发生的机理.在一只9岁雌性猕猴肝总胆管内发现4条肝片吸虫(Fasciola hepatica),胆囊胆汁中检出大量肝片吸虫虫卵.左侧胆管内有一颗棕黑色结石,直径为1 cm、长约2.5 cm圆柱形.肝细胞灶性坏死伴有轻度结缔组织增生,胆管腺体重度增生,上皮细胞胞质内含有中性与酸性混合型粘多糖物质,上皮间有大量杯状细胞.胆石切面呈环状,环层间含有粘多糖物质.胆石经红外光谱分析出现胆固醇-胆色素混合型胆石和黑色物质特征性吸收峰;原子吸收光谱分析钙元素含量最高.

  2. Therapeutic effect of turquoise versus blue light with equal irradiance in preterm infants with jaundice

    DEFF Research Database (Denmark)

    Ebbesen, Finn; Madsen, Poul; Støvring, Søren;

    2007-01-01

    (OSRAM L18W/860 fluorescent lamps) or blue light (Philips TL20W/52 fluorescent lamps). The concentrations of serum total bilirubin and bilirubin isomers were measured by the Vitros routine method and by HPLC, respectively. RESULTS: The decrease in serum concentrations of total bilirubin, total bilirubin...... irradiance, expressed both by serum total bilirubin, total bilirubin isomers and Z,Z-bilirubin, i.e. the turquoise spectral range is more efficient than the blue. This is in accordance with deeper penetration into the skin, lower production of the Z,E-bilirubin and greater production of E......AIM: To compare the efficiency of turquoise light with that of TL52 blue in treatment of preterm infants with jaundice at the same level of body irradiance. METHODS: Infants with gestational age 28-37 weeks and non-haemolytic hyperbilirubinemia were treated for 24 h with either turquoise light...

  3. Bile duct obstruction

    Science.gov (United States)

    ... the liver. It contains cholesterol, bile salts, and waste products such as bilirubin . Bile salts help your ... can lead to life-threatening infection and a dangerous buildup of bilirubin. If the blockage lasts a ...

  4. Phototherapy in the newborn: what’s new?

    OpenAIRE

    Murat Yurdakök

    2015-01-01

    When exposed to light, bilirubin undergoes photoisomerization which are water-soluble and can be excreted in bile and urine. Photoisomerization starts as soon as the lights turned on, and risk of bilirubin encephalopathy is lower in infants who receive phototherapy even in the same serum bilirubin levels. Blue light is absorbed most readily if bilirubin is in a tube, but skin penetration and albumin binding shift of the most effective light to blue-green region. However, there is no consensus...

  5. External Validation of the Bilirubin–Atazanavir Nomogram for Assessment of Atazanavir Plasma Exposure in HIV-1-Infected Patients

    OpenAIRE

    Rekić, Dinko; Röshammar, Daniel; Bergstrand, Martin; Tarning, Joel; Calcagno, Andrea; D’Avolio, Antonio; Ormaasen, Vidar; Vigan, Marie; Barrail-Tran, Aurélie; Ashton, Michael; Gisslén, Magnus; Äbelö, Angela

    2012-01-01

    Atazanavir increases plasma bilirubin levels in a concentration-dependent manner. Due to less costly and readily available assays, bilirubin has been proposed as a marker of atazanavir exposure. In this work, a previously developed nomogram for detection of suboptimal atazanavir exposure is validated against external patient populations. The bilirubin nomogram was validated against 311 matching bilirubin and atazanavir samples from 166 HIV-1-infected Norwegian, French, and Italian patients on...

  6. Genetic disorders associated with neonatal jaundice

    OpenAIRE

    Morioka, Ichiro; Morikawa, Satoru; Yusoff, Surini; Harahap, Indra Sari Kusuma; Nishimura, Noriyuki; Yokoyama, Naoki; Matsuo, Masafumi; Rostenberghe, Hans Van; Nishio, Hisahide

    2013-01-01

    Abstract. Neonatal jaundice is very common in newborn infants. Although it is often a natural and transitional condition, some infants develop severe hyperbilirubinemia, in which unconjugated bilirubin in the serum may cross the blood-brain-barrier and cause bilirubin encephalopathy (acute bilirubin intoxication) or kernicterus (chronic bilirubin intoxication). To avoid these hazardous conditions, it is important to identify the infants at risk for developing severe hyperbilirubinemia. There ...

  7. Changes in erythrocytic deformability and plasma viscosity in neonatal ictericia.

    Science.gov (United States)

    Bonillo-Perales, A; Muñoz-Hoyos, A; Martínez-Morales, A; Molina-Carballo, A; Uberos-Fernández, J; Puertas-Prieto, A

    1999-01-01

    We studied 45 full-term newborns divided into 3 groups. Group 1: 17 newborns with bilirubin ictericia (bilirubin 11-20 mg/dL) and Group 3: 10 newborns with moderate hemolytic ictericia needing exchange transfusion. The following were studied: erythrocytic deformability, plasma viscosity, plasmatic osmolarity, seric bilirubin, bilirubin/albumin ratio, free fatty acids and corpuscular volume of the erythrocytes. In full-term newborns, the following are risk factors for increased erythrocytic rigidity: neonatal hemolytic illness (p = 0.004, odds ratio: 7.02), increases in total bilirubin (p = 0.02, odds ratio: 4.3) and increases in the bilirubin/albumin ratio (p = 0.025, odds ratio: 4.25). Furthermore, the most important risk factor for high plasma viscosity is also neonatal hemolytic illness (p = 0.01, odds ratio: 2.30). The role of total bilirubin is also important (p = 0.09, odds ratio: 2.10), while that of the bilirubin/albumin ratio (p = 0.012, NS) is less so. The greater the hemolysis, the greater the erythrocytic rigidity and plasma viscosity (p ictericia, hemolytic illness and increases in the bilirubin/albumin ratio are accompanied by rheological alterations that could affect cerebral microcirculation and cause a neurological deficit not exclusively related to the levels of bilirubin in plasma.

  8. 健康新生儿经皮小时胆红素百分位列线图预测高胆红素血症的价值%Value of hour-specific transcutaneous bilirubin nomogram for prediction of hyperbilirubinemia in healthy neonates

    Institute of Scientific and Technical Information of China (English)

    石碧珍; 陈兰; 韩树萍; 陈超; 刘玲

    2016-01-01

    目的 绘制健康新生儿小时经皮胆红素(TCB)百分位列线图,评价其在预测高胆红素血症发生风险中的价值.方法 选取5250名足月儿或晚期早产儿(胎龄≥35周,出生体重≥2000 g),连续记录生后168 h TCB值.将生后24~48 h、49~72 h和73~96 h内对应最高危区TCB值作为预测指标,采用小时TCB列线图结合受试者工作特征曲线(ROC曲线)评价小时TCB列线图对高胆红素血症的预测价值.结果 小时TCB百分位列线图显示,生后16~72 h TCB快速上升明显,72 h后至144h上升逐渐减缓,144h后维持一个平稳高值,其中第95百分位(P95)小时胆红素在96 h已趋于稳定.P40、P75、P95小时TCB高峰值分别为173、217、248 μmol/L.生后24~48h、49~72 h和73~96h内TCB水平预测高胆红素血症ROC曲线下面积(AUC)分别为0.77、0.85和0.87.24~48 h、49~72 h和73~96h内高危区预测新生儿高胆红素血症患病率分别为35.03%、43.35%和79.95%,阳性似然比分别为3.35、4.75和22.70.结论 小时TCB百分位列线图结合TCB值危险区的划分可较好预测新生儿高胆红素血症的发生.73~96 h内小时胆红素若处于高危区,73~96 h后有较大可能发生高胆红索血症.

  9. Influence of tertiary prevention rehabilitation nursing on behavioral development of patients with neonatal bilirubin encephalopathy%三级预防康复护理对新生儿胆红素脑病患儿行为发育的影响

    Institute of Scientific and Technical Information of China (English)

    梁贡南

    2011-01-01

    [目的]观察三级预防康复护理对新生儿胆红素脑病患儿行为发育的影响效果.[方法]将64例胆红素脑病患儿按时间段分成观察组和对照组,对照组给予传统的常规治疗与护理,观察组在对照组的基础上实施三级预防康复护理.两组患儿于6个月、1岁、2岁时进行盖塞尔(Gesell)行为发育测试.[结果]观察组患儿在6个月、1岁、2岁时Gesell行为发育测试时发育商数(DQ)较对照组高,差异有统计学意义(P<0.05).[结论]三级预防康复护理对促进新生儿胆红素脑病患儿的行为发育有显著效果.

  10. The correlation between anemic parameters and bilirubin level of the patients and the disease activity of systemic lupus erythematosus%系统性红斑狼疮患者贫血参数及胆红素水平与疾病活动关系的研究

    Institute of Scientific and Technical Information of China (English)

    肖平; 刘玲玲

    2006-01-01

    系统性红斑狼疮(SLE)是一种自身免疫性结缔组织病,由于体内有大量致病性自身抗体和免疫复合物,造成组织损伤.临床上出现多个系统和脏器的损害。当前对诊断SLE患者疾病活动的指标大多为补体,抗dsDNA抗体,ENA多肽抗体。近来SLE贫血患者的血红蛋白(Hb)、网织红细胞参数(RetI)及血清胆红素(BIL)水平的变化报道较少。本次研究探讨SLE贫血患者的Hb、RetI、BIL水平的变化及与病情发展的关系.现报道如下。

  11. 牛黄及胆红素对三氯乙烯染毒小鼠脂质过氧化的拮抗作用%The antagonism of cow-bezoar and bilirubin on the lipid peroxidation of mice induced by trichloroethylene

    Institute of Scientific and Technical Information of China (English)

    邰昌松; 赵萍; 黎燕; 杨青; 沈惠麒

    2005-01-01

    目的研究牛黄、胆红素对三氯乙烯(TCE)染毒ICR小鼠所致的脂质过氧化的拮抗作用.方法用TCE灌胃染毒ICR小鼠制造脂质过氧化模型,然后分别以牛黄、胆红素灌胃,测定ICR小鼠肝、肾组织中丙二醛(MDA)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)、过氧化氢酶(CAT).结果与阴性对照组比,TCE处理组肝、肾组织GSH-Px、 SOD、CAT活力降低,MDA含量增加,差异均有显著性(P<0.05);牛黄、胆红素染毒与TCE处理组比较,肝、肾组织GSH-Px、 SOD、CAT 活力显著增强(P<0.05),脂质过氧化产物MDA含量减少.结论牛黄和胆红素均能较好地拮抗TCE所引起的ICR小鼠脂质过氧化.

  12. Investigation of Surface-Enhanced Raman Spectra of Human Gallstones on Colloidal Silver

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    The surface-enhanced Raman scatterihg (SERS) spectra of human gallstones is investigated. Complicated Raman bands were due to multiple components that include bilirubin, bilirubinate salts, cholesterol, fatty salts and proteins. The results suggest that besides bilirubin and cholesterol, fatty salts and proteins may play an important role in the formation of gallstone. The experimental data supply an useful information for the research of the formation mechanism of gallstones.

  13. Effects of thyroid status and thyrostatic drugs on hepatic glucuronidation of lodothyronines and other substrates in rats - Induction of phenol UDP-glucuronyltransferase by methimazole

    NARCIS (Netherlands)

    T.J. Visser (Ton); E. Kaptein (Ellen); A.L. Gijzel (Anthonie); W.W. de Herder (Wouter); M.L. Cannon (Mark); F. Bonthuis (Fred); W.J. de Greef (W.)

    1996-01-01

    textabstractGlucuronidation of iodothyronines in rat liver is catalyzed by at least three UDP-glucuronyltransferases (UGTs): bilirubin UGT, phenol UGT, and androsterone UGT. Bilirubin and phenol UGT activities are regulated by thyroid hormone, but the effect of thyroid status on hepatic glucuronidat

  14. A product of heme catabolism modulates bacterial function and survival.

    Directory of Open Access Journals (Sweden)

    Christopher L Nobles

    Full Text Available Bilirubin is the terminal metabolite in heme catabolism in mammals. After deposition into bile, bilirubin is released in large quantities into the mammalian gastrointestinal (GI tract. We hypothesized that intestinal bilirubin may modulate the function of enteric bacteria. To test this hypothesis, we investigated the effect of bilirubin on two enteric pathogens; enterohemorrhagic E. coli (EHEC, a Gram-negative that causes life-threatening intestinal infections, and E. faecalis, a Gram-positive human commensal bacterium known to be an opportunistic pathogen with broad-spectrum antibiotic resistance. We demonstrate that bilirubin can protect EHEC from exogenous and host-generated reactive oxygen species (ROS through the absorption of free radicals. In contrast, E. faecalis was highly susceptible to bilirubin, which causes significant membrane disruption and uncoupling of respiratory metabolism in this bacterium. Interestingly, similar results were observed for other Gram-positive bacteria, including B. cereus and S. aureus. A model is proposed whereby bilirubin places distinct selective pressure on enteric bacteria, with Gram-negative bacteria being protected from ROS (positive outcome and Gram-positive bacteria being susceptible to membrane disruption (negative outcome. This work suggests bilirubin has differential but biologically relevant effects on bacteria and justifies additional efforts to determine the role of this neglected waste catabolite in disease processes, including animal models.

  15. Interaction of indomethacin with adult human albumin and neonatal serum

    DEFF Research Database (Denmark)

    Honoré, B; Brodersen, R; Robertson, A

    1983-01-01

    The binding of indomethacin to albumin was investigated at 37 degrees C, pH 7.4. The first stoichiometric binding constant is 2.5 X 10(5) M-1. Indomethacin utilizes both the bilirubin and diazepam binding functions equally. The effect on bilirubin binding to albumin is negligible at therapeutic...

  16. Hyperbilirubinemia as a predictor for appendiceal perforation

    DEFF Research Database (Denmark)

    Burcharth, J; Pommergaard, H C; Rosenberg, J;

    2013-01-01

    Delayed or wrong diagnosis in patients with appendicitis can result in perforation and consequently increased morbidity and mortality. Serum bilirubin may be a useful marker for appendiceal perforation. The purpose of this systematic review was to evaluate studies investigating elevated serum...... bilirubin as a predictor for appendiceal perforation....

  17. Bereiding van en onderzoek met "primaire" bilirubinestandaarden

    NARCIS (Netherlands)

    Dreumel; H.J. van; Wikkeling; R.H.; Phielix-Strubbe; C.J.; Klaassen; R.; Boink; A.B.T.J.; Koedam; J.C.

    1987-01-01

    De bereiding van primaire bilirubine-standaarden is mogelijk mits ; - gebruik wordt gemaakt van de beste kwaliteit bilirubine ; - HSA (en niet BSA) wordt gebruikt, dat direct voor gebruik wordt gefil- treerd ; - alle bewerkingen gebeuren onder strenge "donkere-kamer" condities ; - de

  18. Molecular basis of indomethacin-human serum albumin interaction

    DEFF Research Database (Denmark)

    Trivedi, V D; Vorum, H; Honoré, B;

    1999-01-01

    of HSA. A technique involving fluorescence enhancement of bilirubin upon its interaction with HSA was used to study its displacement by indomethacin. The displacement, although apparently competitive in nature, was not strong suggesting that the primary sites of interaction of bilirubin and indomethacin...

  19. REGULATION OF RAT HEPATIC DELTA-AMINOLEVULINIC ACID SYNTHETASE AND HEME OXYGENASE ACTIVITIES: EVIDENCE FOR CONTROL BY HEME AND AGAINST MEDIATION BY PROSTHETIC IRON

    Science.gov (United States)

    The effects of in vivo administration of 6 compounds on the activity of delta-aminolevulinic acid (ALA) synthetase and heme oxygenase were determined. The order of decreasing potency in reducing ALA synthetase activity was heme, bilirubin, protoporphyrin IX, bilirubin dimethyl es...

  20. [Simultaneous long-term measurement of duodenogastric reflux and gastroduodenal motility].

    Science.gov (United States)

    Thomas, H; Wilhelm, L; Petermann, J; Rosenbaum, K D; Lorenz, D

    1997-06-01

    We combined a newly developed ambulatory fiberoptic system for detecting intragastric bilirubin (Bilitec 2000, Synectics Medical Inc., Sweden) with prolonged measurement of gastroduodenal motility in 10 healthy volunteers and 10 patients followed BI resection. Circadian intragastric bilirubin exposure and the total number of tremendous changes of bilirubin absorption (more than 20%, over a period of at least 5 min) were significantly increased in the BI-resected patients (P < 0.05). In patients the interdigestive motility cycle (IMC) was characterized by the appearance of several types of abnormally propagated phase III activity fronts. Of the tremendous increases of bilirubin absorption in the patient group, 90.1% were associated with abnormally propagated phase III activity fronts. In cases of increased duodenogastric reflux, the combination of ambulatory intragastric bilirubin measurement and long-term manometry seems to be feasible to assess motility and reflux simultaneously. PMID:9324442

  1. Hyperbilirubinemia after extracorporeal circulation surgery: A recent and prospective study

    Institute of Scientific and Technical Information of China (English)

    Yong An; Ying-Bin Xiao; Qian-Jin Zhong

    2006-01-01

    AIM: To clarify the incidence and nature of postoperative hyperbilirubinemia in patients after modern extracorporeal circulation, to analyze possible perioperative risk factors, and to elucidate the clinical significance of postoperative hyperbilirubinemia associated morality and morbidity.METHODS: Between March 2005 and May 2006, three hundred and eighty six consecutive patients undergoing extracorporeal circulation surgery due to a variety of cardiac lesions were investigated prospectively. The incidence of postoperative hyperbilirubinemia was defined as a serum total bilirubin concentration of more than 51 μmol/L. Several perioperative parameters were compared by logistic regression between hyperbilirubinemia and non-hyperbilirubinemia patients to determine possible risk factors contributing to postoperative hyperbilirubinemia and mortality.RESULTS: Overall incidence of postoperative hyperbilirubinemia was 25.3% (98/386). In patients with postoperative hyperbilirubinemia, 56.2%reached peak total bilirubin concentration on the first postoperative day, 33.5% on the second day, and 10.3%on the seventh day. Eighty percent of the increase of total bilirubin resulted from an increase of both conjugated and unconjugated bilirubin. Development of postoperative hyperbilirubinemia was associated with a higher mortality (P < 0.01), longer duration of mechanical ventilation (P < 0.05) and longer ICU stay time (P < 0.05). Preoperative total bilirubin concentration, preoperative right atrium pressure,numbers of valves replaced and of blood transfusion requirement were identified as important predictors for postoperative hyperbilirubinemia.CONCLUSION: Early postoperative hyperbilirubinemia after modern extracorporeal circulation is mainly caused by an increase in both conjugated and unconjugated bilirubin, and is associated with a high mortality.Important contributing factors are the preoperative total bilirubin concentration, preoperative severity of right atrial

  2. Composition of common bile duct stones in Chinese patients during and after endoscopic sphincterotomy

    Institute of Scientific and Technical Information of China (English)

    Wei-Lun Tsai; Kwok-Hung Lai; Chiun-Ku Lin; Hoi-Hung Chan; Ching-Chu Lo; Ping-I Hsu; Wen-Chi Chen; Jin-Shiung Cheng; Gin-Ho Lo

    2005-01-01

    AIM: Endoscopic sphincterotomy (ES) is a well-established therapeutic modality for the removal of common bile duct (CBD) stones. After ES there are still around 10% of patients that experience recurrent CBD stones. The aim of this study is to investigate the composition of CBD stones before and after ES and its clinical significance in Chinese patients.METHODS: From January 1996 to December 2003, 735Veterans General Hospital and stone specimens from 266patients were sent for analysis. Seventy-five patients had recurrent CBD stones and stone specimens from 44patients were sent for analysis. The composition of the stones was analyzed by infrared (IR) spectrometry and they were classified as cholesterol or bilirubinate stones according to the predominant composition. Clinical data were analyzed.RESULTS: In the initial 266 stone samples, 217 (82%)were bilirubinate stones, 42 (16%) were cholesterol stones,3 were calcium carbonate stones, 4 were mixed cholesterol and bilirubinate stones. Patients with bilirubinate stones were significantly older than patients with cholesterol stones (66±13 years vs 56±17 years, P= 0.001). In the 44 recurrent stone samples, 38 (86%) were bilirubinate stones, 3 (7%) were cholesterol stones, and 3 were mixed cholesterol and bilirubinate stones. In 27 patients, bothinitial and recurrent stone specimens can be obtained,23 patients had bilirubinate stones initially and 2 became cholesterol stones in the recurrent attack. In the four patients with initial cholesterol stones, three patients had bilirubinate stones and one patient had a cholesterol stone in the recurrent attack.CONCLUSION: Bilirubinate stone is the predominant composition of initial or recurrent CBD stone in Chinese patients. The composition of CBD stones may be different from initial stones after ES.

  3. Study on the Property of

    Institute of Scientific and Technical Information of China (English)

    MAO; LuYuan

    2001-01-01

    How to utilize functional material to eliminate uncombined bilirubin is a key problem in the research of artificial hepatic supporter [1]. There have been reports on the utilization of cyclodextrin and its polymer as biomedical materials [2,3]. In this paper, it was studied that the property of cyclodextrin polymers (MPS-CDEP) synthesized by us for the inclusion and adsorption of bilirubin. Bilirubin is the degradation product of heme (ferriprotoporohyrin IX), which body contain, and structures of both as follows:  ……

  4. Synthesis of 8-(ω-Chloroalkyl)-dipyrrinones

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    @@ Dipyrrinones,typically bright yellow compounds with a long axis-polarized π-π* excitation in the 14π-electron-conjugated chromophore,such as xanthobilirubic acid methyl ester(XBRMe),are useful building blocks for the syntheses of biologically important tetrapyrrole pigments such as bilirubin(the yellow pigment of jaundice)[1],and they have been extensively used as model dipyrrole pigments for the spectroscopic and the photochemical studies of liner tetrapyrroles such as bilirubin and biliverdin.They have also served as useful adjuncts in the studies of jaundice phototherapy and in bilirubin structure-biological function relationships[2].

  5. Genoptraeden af kernikterus hos nyfødte børn i Danmark

    DEFF Research Database (Denmark)

    Bjerre, Jesper V.; Ebbesen, Finn

    2006-01-01

    . The maximum plasma total bilirubin concentration was 531-745 mol/l. The aetiology was determined in two infants: spherocytosis and galactosaemia. Most likely, ABO blood type immunization was the reason in four cases. In two cases, the aetiology was unknown. Seven infants had symptoms of chronic bilirubin...... were reported. A change in the assessment of the risk and inadequate knowledge of the serious consequences of bilirubin encephalopathy may be explanations. Through information and education of health personnel, it is possible to provide sufficient information to parents, perform screening procedures...

  6. A case of Gilbert's syndrome combined with macroamylasemia.

    Science.gov (United States)

    Inoue, H; Adachi, Y; Yamashita, M; Nanno, T; Katoh, H; Enomoto, M; Suwa, M; Yamamoto, T

    1989-06-01

    A 30-year-old Japanese male, who had no remarkable family history, visited our hospital with a complaint of abdominal pain, and unconjugated hyperbilirubinemia and hyperamylasemia were observed. He showed negative hemolysis tests, positive nicotinic acid test, low hepatic bilirubin UDP-glucuronyltransferase activity, decreased bilirubin diglucuronide and increased bilirubin monoglucuronide in bile, and a decrease in serum bilirubin after phenobarbital administration. He also showed high serum amylase level, low urine amylase level, and low amylase-creatinine clearance ratio. Gel filtration of serum with Sephadex G-200 revealed the existence of macroamylase. Countercurrent immunoelectrophoresis proved binding of serum amylase to lambda type IgA. From these results, the case was diagnosed as Gilbert's syndrome combined with macroamylasemia.

  7. Uniform treatment thresholds for hyperbilirubinemia in preterm infants : Background and synopsis of a national guideline

    NARCIS (Netherlands)

    van Imhoff, Deirdre Elisabeth; Dijk, Peter Hendrik; Hulzebos, Christian Victor

    2011-01-01

    Background: To prevent severe hyperbilirubinemia and bilirubin neurotoxicity, the American Academy of Pediatrics' management guideline for hyperbilirubinemia in near term infants is used worldwide. A leading guideline for jaundiced preterm infants is lacking whereas the risk on severe hyperbilirubin

  8. Uniform treatment thresholds for hyperbilirubinemia in preterm infants: background and synopsis of a national guideline

    NARCIS (Netherlands)

    Imhoff, D.E. van; Dijk, P.H.; Hulzebos, C.V.; Liem, K.D.

    2011-01-01

    BACKGROUND: To prevent severe hyperbilirubinemia and bilirubin neurotoxicity, the American Academy of Pediatrics' management guideline for hyperbilirubinemia in near term infants is used worldwide. A leading guideline for jaundiced preterm infants is lacking whereas the risk on severe hyperbilirubin

  9. Exchange transfusion - series (image)

    Science.gov (United States)

    ... disorder. The most commonly used treatment is fluorescent light exposure, in which the infant is placed under a lamp for a few hours each day. The blue light breaks down bilirubin into a form the infant ...

  10. Jaundice

    Science.gov (United States)

    ... Autoimmune hepatitis Bile Biliary atresia Biliary stricture Bilirubin blood test Cholestasis Delta agent (Hepatitis D) Dubin-Johnson syndrome Gallstones Gilbert disease Hemolytic anemia Hepatitis A Hepatitis B Hepatitis C Malaria Newborn jaundice Pancreatic cancer Primary ...

  11. ALP (Alkaline Phosphatase) Test

    Science.gov (United States)

    ... Also known as: ALK PHOS; Alkp Formal name: Alkaline Phosphatase Related tests: AST ; ALT ; GGT ; Bilirubin ; Liver Panel ; Bone Markers ; Alkaline Phosphatase Isoenzymes; Bone Specific ALP All content on ...

  12. Pro-C5, a marker of true type V collagen formation and fibrillation, correlates with portal hypertension in patients with alcoholic cirrhosis

    DEFF Research Database (Denmark)

    Leeming, Diana J; Veidal, Sanne S; Karsdal, Morten A;

    2015-01-01

    was combined in a linear regression model. RESULTS: Plasma Pro-C5 correlated to HVPG, indocyanine green clearance, sustained vascular resistance and mean arterial pressure (r = -0.68-0.33, p bilirubin and model for end...

  13. Hepatology may have problems with putative surrogate outcome measures

    DEFF Research Database (Denmark)

    Gluud, Christian; Brok, Jesper; Gong, Yan;

    2007-01-01

    hepatitis C, serum bilirubin concentration following ursodeoxycholic acid or immunosuppressants for patients with primary biliary cirrhosis, and nutritional outcomes following artificial nutrition for liver patients may not be valid surrogates for morbidity or mortality. The challenge is to develop reliable...

  14. Bereiding van bilirubinestandaarden

    NARCIS (Netherlands)

    Dreumel; H.J.van; Bosman; H.A.; Derks; H.J.G.M.; Hagen-Fast; A.K.; Koedam; J.C.; Klaasen; R.; Phielix-Strubbe; C.J.; Terlingen; J.B.A.

    1986-01-01

    Dit rapport beschrijft de bereiding van vijf partijen gevriesdroogde bilirubinestandaard. De volumeverandering die optreedt tengevolge van droogvriezen en reconstitutie kon worden berekend aan de hand van bepalingen van bilirubine, kalium, chloride en radioactiviteitsmetingen in de oorspronkelij

  15. Prospective association of liver function biomarkers with development of hepatobiliary cancers

    NARCIS (Netherlands)

    Stepien, Magdalena; Fedirko, Veronika; Duarte-Salles, Talita; Ferrari, Pietro; Freisling, Heinz; Trepo, Elisabeth; Trichopoulou, Antonia; Bamia, Christina; Weiderpass, Elisabete; Olsen, Anja; Tjønneland, Anne; Overvad, Kim; Boutron-Ruault, Marie Christine; Fagherazzi, Guy; Racine, Antoine; Kühn, Tilman; Kaaks, Rudolf; Aleksandrova, Krasimira; Boeing, Heiner; Lagiou, Pagona; Benetou, Vassiliki; Trichopoulos, Dimitrios; Palli, Domenico; Grioni, Sara; Tumino, Rosario; Naccarati, Alessio; Panico, Salvatore; Bueno-de-Mesquita, H. Bas; Peeters, Petra H.; Lund, Eiliv; Quirós, J. Ramón; Nápoles, Osmel Companioni; Sánchez, María José; Dorronsoro, Miren; Huerta, José María; Ardanaz, Eva; Ohlsson, Bodil; Sjöberg, Klas; Werner, Mårten; Nystrom, Hanna; Khaw, Kay Tee; Key, Timothy J.; Gunter, Marc; Cross, Amanda; Riboli, Elio; Romieu, Isabelle; Jenab, Mazda

    2016-01-01

    Introduction: Serum liver biomarkers (gamma-glutamyl transferase, GGT; alanine aminotransferase, ALT; aspartate aminotransferase, AST; alkaline phosphatase, ALP; total bilirubin) are used as indicators of liver disease, but there is currently little data on their prospective association with risk of

  16. OXYTOCIN INDUCED NEONATAL HYPERBILIRUBINEMIA

    Directory of Open Access Journals (Sweden)

    Smita S.

    2015-05-01

    Full Text Available INTRODUCTION: Hyperbilirubinemia is one of the most common causes of health problems, observed in 60% of term and 80% of preterm infants in the first week of life . Hyperbilirubinemia leads to neurotoxicity in severe condition. Some studies suggests that liberal use of oxytocin for inducing labour is one of the factor which lead to neonatal hyperbilirubinemia. OBJECTIVE: To compare the effect of oxytocin and neonatal bilirubin levels with spontaneous vaginal delivery . MATERIALS AND METHOD S : 100 full term parturients were selected for this study. The subjects were divided into two groups. 50 healthy babies of women who had oxytocin induced labour and 50 healthy babies of women with normal vaginal delivery following spontaneous onset of labour formed the control group. Neon atal serum bilirubin was measured on day 1, 3 and 5 after delivery. Bilirubin was measured by spectrophotometry. Data was analysed in ms excel sheet using spss 19.0v. Statistical analysis was done by using unpaired‘t’ test. RESULTS: There was significant i ncrease in bilirubin level in oxytocin induced group compared to control group on day 1 and 3. There was insignificant increase in bilirubin level in oxytocin induced group on day 5. However the level of serum bilirubin is within normal limits as bilirubin level normally rises on till 4 th day and decreases thereafter. CONCLUSION: Neonatal hyperbilirubinemia may be due to oxytocin administration by continues IV infusion which results in erythrocyte swell and rupture. Increase in bilirubin level in oxytocin i nduced group is within physiological limits

  17. HEPATOTOXICITY OF EUGENOL

    OpenAIRE

    Soundran, Vijaya; Namagiri, Tara; Manonayaki, S.; Vanithakumari, G.

    1994-01-01

    EUGENOL a widely used pharmaceutical agent proceeds toxicity on inhalation in rats. Two different doses 20 & 30 μg/100g body weight/ day of eugenol were given intramuscularly to male albino rats for 10 days and the liver function was assessed by measuring the specific enzyme activities, and total and differential bilirubin concentration. There was an appreciable increase in total as well as differential bilirubin fractions and a dose dependent increase was noticed in the activities of alkalin...

  18. Effect of phototherapy with alumunium foil reflectors on neonatal hyperbilirubinemia

    OpenAIRE

    Tony Ijong Dachlan; Tetty Yuniati; Abdurachman Sukadi

    2015-01-01

    Background Neonatal hyperbilirubinemia (NH) is one of the most common problems in neonates, but it can be treated with blue light phototherapy. Developing countries with limited medical equipment and funds have difficulty providing effective phototherapy to treat NH, leading to increased risk of bilirubin encephalopathy. Phototherapy with white reflecting curtains can decrease the duration of phototherapy needed to reduce bilirubin levels. Objective To compare the duration of phototherapy...

  19. Effect of phototherapy with alumunium foil reflectors on neonatal hyperbilirubinemia

    OpenAIRE

    Tony Ijong Dachlan; Tetty Yuniati; Abdurachman Sukadi

    2016-01-01

    Background Neonatal hyperbilirubinemia (NH) is one of the most common problems in neonates, but it can be treated with blue light phototherapy. Developing countries with limited medical equipment and funds have difficulty providing effective phototherapy to treat NH, leading to increased risk of bilirubin encephalopathy. Phototherapy with white reflecting curtains can decrease the duration of phototherapy needed to reduce bilirubin levels. Objective To compare the duration of phototherapy nee...

  20. Comparison of Two Phototherapy Methods (Prophylactic vs Therapeutic) for Management of Hyperbilirubinemia in Very Low Birth Weight Newborns

    OpenAIRE

    Seyedeh-Sarah Nazem-Sadati; Majid Mohammadizadeh; Ramin Iranpour

    2011-01-01

    Objective: Preterm and low birth weight (LBW) infants are at greater risk of developing bilirubin-associated brain damage compared with term infants. Certainly, phototherapy, if used appropriately, is capable of controlling the bilirubin levels in LBW infants; but there is not a unique phototherapy treatment strategy in LBW infants. This study was designed to compare the prophylactic phototherapy and late treatment of jaundiced newborns weighing 1000-1500 grams.Methods: Sixty newborns with bi...

  1. The effect of clofibrate with phototherapy in late pre-term newborns with non-hemolytic jaundice

    OpenAIRE

    Sakha Sedigheh Hossein; Gharehbaghi Manizheh; Rahbani Mohammad

    2009-01-01

    Background : Despite an understanding of the enzymatic pathways leading to bilirubin production and degradation, very few pharmacologic interventions are utilized and the mainstay of treatment remains phototherapy. Aims : To evaluate the efficacy of clofibrate in reducing total serum bilirubin levels in late pre-term neonates with non-hemolytic jaundice. Design and Setting : Double-blind, placebo-controlled, randomized trial; tertiary level neonatal unit. Materials and Methods : A randomized...

  2. Newborn's light treatment: Phototherapy

    OpenAIRE

    Canbulat, Nejla; DEMİRGÖZ, Meltem

    2009-01-01

    Neonatal jaundice results from some changes in bilirubin metabolism and increase in bilirubin production. Hyperbilirubinemia occurs in 80% of preterm neonatals and 40-60% of term neonatals. Hyperbilirubinemia is treated by using the phototherapy and in severe cases via blood transfusions. The history of phototherapy dates back to the summer of 1956 by Miss J. Ward who worked as a charge nurse at Rochford General Hospital Premature Service in Essex, England. Although the phototherapy has been ...

  3. Efektivitas Fototerapi Tunggal Dibandingkan Fototerapi Ganda Pada Neonatus Dengan Hiperbilirubinemia Indirek

    OpenAIRE

    Milyana, Nanda Susanti

    2011-01-01

    Background: Hyperbilirubinemia is one of the most common problems in term newborns and the phototherapy is the most widespread treatment for lowering bilirubin concentration in neonates. The double phototherapy unit could increase effectiveness of phototherapy. Objective: To compare the effectiveness of single phototherapy and double phototherapy in decreasing serum bilirubin and increasing spectral irradiance Methods: An open, randomized controlled trial was conducted at both H. Ada...

  4. Comparison of light emitting diode phototherapy and double standard conventional phototherapy for nonhemolytic neonatal hyperbilirubinemia

    OpenAIRE

    Uraş, Nurdan

    2009-01-01

    Aim: To compare the efficacies and the rebound bilirubin levels of infants who received light emitting diode phototherapy and double standard conventional phototherapy. Materials and Methods: One hundred twenty-three healthy term and near term (>=35 weeks) infants requiring phototherapy for non-hemolytic hyperbilirubinemia were enrolled in the study. All infants' gestational age, type of feeding, age at phototherapy, total serum bilirubin level at initiation and termination of phot...

  5. Single and Double Versus Intensive Phototherapy in Term Newborns with Severe Hyperbilirubinemia

    OpenAIRE

    A Mazlomi; R. Alizadeh; M Fuladinejat; M Ahmadpour; Y Zahedpasha

    2006-01-01

    Background: Hyperbilirubinemia is one of the most common problems in term newborns and the phototherapy is the most widespread treatment for lowering bilirubin concentration in neonates. The purpose of this study is to compare the effectiveness of conventional phototherapy, double phototherapy and intensive phototherapy in decreasing serum bilirubin. Methods: This interventional study was done on 60 neonates divided randomly in three groups. Infants in group 1 received conventional photothera...

  6. Therapeutic Effect of Agaricus brasiliensis on Phenylhydrazine-Induced Neonatal Jaundice in Rats

    OpenAIRE

    Lan Zhang; Bo Yuan; HuiPing Wang; Ya Gao

    2015-01-01

    The present study was designed to investigate the effect of Agaricus brasiliensis extract (ABE) on phenylhydrazine-induced neonatal jaundice in rats. Administration of ABE dose-dependently reduced the elevated bilirubin level induced by phenylhydrazine. It can be somewhat supported from the results of in vitro bilirubin degradation experiment. ABE treatment also reduced the total antioxidant status (TAOS), cascade O2 −/SOD, level of NF-κB protein, and adrenomedullin (AM). Overall, the results...

  7. Evaluation of the hepatotoxic potential of minocycline.

    OpenAIRE

    Böcker, R.; Estler, C J; Ludewig-Sandig, D

    1991-01-01

    Minocycline (25 to 100 micrograms/g) dose dependently increased serum glutamic oxalacetic transaminase, urea, and bilirubin levels, and the hepatic triglyceride content in mice. In animals pretreated with phenobarbital to enhance minocycline metabolism, the effects on liver triglycerides were attenuated, while the changes in serum glutamic oxalacetic transaminase, urea, and bilirubin were enhanced. It is concluded that part of the toxic effects of minocycline may be produced by a metabolite o...

  8. Fetal fluid and protein dynamics

    OpenAIRE

    Pasman, Suzanne

    2010-01-01

    In this thesis fetal fluid and protein dynamics are investigated to gain insight in fetal (patho-)physiology. Studies were performed in fetuses with severe anemia and/or hydrops fetalis. Measurements were performed in fetal blood or amniotic fluid, obtained before or during intrauterine transfusion. The severity of anemia can be predicted by measurement of bilirubin in amniotic fluid. We showed that this concentration is based on bilirubin in fetal blood and on albumin concentrations. Albumin...

  9. Treatment of neonatal jaundice - more than phototherapy and exchange transfusions

    OpenAIRE

    Erlandsen, Marie Andersen; Hansen, Thor Willy Ruud

    2013-01-01

    Abstract. Jaundice is the most common reason for doing blood tests and starting therapy in newborn infants. In some neonates serum bilirubin levels may become excessively high, and in rare instances this may lead to brain damage (kernicterus). In such cases it is important to start treatment quickly. Herein we will discuss various approaches through which serum bilirubin levels may be reduced, thus potentially preventing brain damage. This paper is based on relevant publications found through...

  10. The jaundiced newborn: which early monitoring for a safe discharge?

    OpenAIRE

    S. Pratesi; Dani, C

    2013-01-01

    Neonatal jaundice is one of the most common causes of prolonged hospital stay or readmission of a near-term or term baby. Reason of concern at early discharge of a jaundiced newborn is that of bilirubin neurotoxicity, even if a serum bilirubin concentration surely toxic for the brain is still unknown. Kernicterus and severe neonatal hyperbilirubinemia are still problems in the third millennium and the American Academy of Pediatrics claimed the pediatric community to increase vigilance in orde...

  11. Facility-based constraints to exchange transfusions for neonatal hyperbilirubinemia in resource-limited settings

    OpenAIRE

    Mabogunje, Cecilia A.; Olaifa, Sarah M; Olusanya, Bolajoko O

    2016-01-01

    Several clinical guidelines for the management of infants with severe neonatal hyperbilirubinemia recommend immediate exchange transfusion (ET) when the risk or presence of acute bilirubin encephalopathy is established in order to prevent chronic bilirubin encephalopathy or kernicterus. However, the literature is sparse concerning the interval between the time the decision for ET is made and the actual initiation of ET, especially in low- and middle-income countries (LMICs) with significant r...

  12. Plasma catecholamine level and portal venous pressure as guides to prognosis in patients with cirrhosis

    DEFF Research Database (Denmark)

    Tage-Jensen, U; Henriksen, Jens Henrik Sahl; Christensen, E;

    1988-01-01

    clinical and biochemical variables and survival. Forty-seven (58%) of the patients died during the follow-up period. Univariate analysis showed that plasma noradrenaline and adrenaline concentrations, portal pressure, indocyanine green clearance, serum sodium, bilirubin, and albumin concentrations......, and the presence of ascites or cardiovascular disease were of significant prognostic value. In a multivariate analysis (Cox regression model), plasma noradrenaline concentration, portal pressure, serum bilirubin concentration, and the presence of ascites and cardiovascular disease remained significant independent...

  13. Preparation of Chitosan-coated Nylon Membranes and their Application as Affinity Membranes

    Institute of Scientific and Technical Information of China (English)

    Wei SHI; Feng Bao ZHANG; Guo Liang ZHANG

    2005-01-01

    Chitosan-coated nylon membranes which possess a large number of reactive groups of-CH2OH and -NH2 were prepared by coupling chitosan onto the nylon membrane. Then polylysine as ligand was also immobilized onto the composite membranes by 1, l′-carbonyldiimidazole activation to prepare affinity membranes for bilirubin adsorption. The results showed that these membranes exhibited high binding affinity capacities for bilirubin and the adsorption isotherm fitted the Freundlich model well.

  14. Measurements of intracellular calcium

    International Nuclear Information System (INIS)

    Intracellular calcium concentration ([Ca2+]i) has been measured in cultured cells by using Fura-2 load cells and a computer-controlled Perkin Elmer LS-5B spectrofluorometer. Increased [Ca2+]i in cells exposed to extracellular bilirubin was observed both with and without extracellular calcium. However, the increase was considerable larger with extracellular calcium. The enhancement of [Ca2+]i became smaller with decreasing bilirubin/BSA (bovine serum albumine) ratio. 5 refs., 5 figs

  15. Jaundice and wound healing: a tissue-culture study.

    OpenAIRE

    Taube, M.; Elliot, P.; Ellis, H.

    1981-01-01

    The effects of jaundice on wound healing have been studied by growing fibroblasts, in vitro, in normal culture media, in culture media to which bilirubin has been added, and in culture media containing sera from jaundiced patients. It has been found that the addition of bilirubin to the culture media causes morphological changes in the fibroblasts, and impairs the growth of cells. The addition of jaundiced human sera to the culture also causes similar changes.

  16. Identification of cellular targets for specific therapies in neurodevelopmental disorders

    OpenAIRE

    Vaz, Ana Rita Mendonça, 1984-

    2010-01-01

    Tese de doutoramento, Farmácia (Biologia Celular e Molecular), Universidade de Lisboa, Faculdade de Farmácia, 2010 The present dissertation is focused in neonatal hyperbilirubinemia, a very common condition in the neonatal period, characterized by increased concentrations of unconjugated bilirubin (UCB). High levels of UCB may lead to bilirubin-induced neurologic dysfunction (BIND), particularly in premature infants, which may be a starting point to the appearance of long-term ...

  17. Marked Direct Hyperbilirubinemia due to Ceftriaxone in an Adult with Sickle Cell Disease

    Directory of Open Access Journals (Sweden)

    Daniyeh Khurram

    2015-01-01

    Full Text Available Drugs are a significant cause of liver injury. Drug-induced liver injury (DILI can cause acute hepatitis, cholestasis, or a mixed pattern. Ceftriaxone is a commonly used antibiotic and has been associated with reversible biliary sludge, pseudolithiasis, and cholestasis. A 32-year-old male with sickle cell disease was admitted to the hospital for acute sickle cell crisis. On the second day of hospitalization, he developed cough and rhonchi with chest X-ray revealing right middle lobe infiltrates. Ceftriaxone and azithromycin were initiated. Subsequently, he developed conjugated hyperbilirubinemia and mild transaminitis. His total bilirubin trended upwards from 3.3 mg/dL on admission to 17 mg/dL. It was predominantly conjugated bilirubin, with preadmission bilirubin levels of 3-4 mg/dL. His transaminases were mildly elevated as well compared to previous levels. Extensive workup for bilirubin elevation was unremarkable. Ceftriaxone was switched to levofloxacin and the hyperbilirubinemia improved. On ambulatory follow-up, his bilirubin remained below 4 mg/dL. Ceftriaxone may be associated with marked direct hyperbilirubinemia particularly in sickle cell patients with chronic liver chemistry abnormalities. In the case of elevated bilirubin with concomitant ceftriaxone use, elimination of the offending agent should be considered.

  18. ESTIMATION OF MALONDIALDEHYDE AND VITAMIN-E LEVELS IN NEONATAL HYPERBILIRUBINEMIA BEFORE AND AFTER PHOTOTHERAPY

    Directory of Open Access Journals (Sweden)

    Sidrah, Tandrapad Priyanka, Asiya Naaz, Lakshmi Chaitanya G, Sridevi D

    2015-07-01

    Full Text Available Background: Hyperbilirubinemia is a common and benign problem in neonates worldwide. It is observed during the 1st week of life in approximately 60% of term neonates and 80% of preterm neonates. Phototherapy is most widely used as therapy for unconjugated hyperbilirubinemia. Phototherapy is related to oxidative stress and lipid peroxidation. The present study is undertaken to establish the relation between anti-oxidant status and the marker of lipid peroxidation in neonatal hyperbilirubinemia before and after phototherapy. Objectives: To estimate the levels of MDA (malondialdehyde and vit-E levels in neonatal hyperbilirubinemia before and after phototherapy. Material and Methods: A total of 30 patients were eligible for the study who met the inclusion and exclusion criteria. Blood sample was collected from neonates of preterm/full term age 1 to 10 days with hyperbilirubinemia undergoing phototherapy. Total Bilirubin, Direct Bilirubin, MDA and vit-E levels were estimated in serum by thiobarbituric acid (TBA method and Backer and Frank’s Method respectively. Results: The present study showed increase in Total bilirubin, Direct bilirubin, MDA and decrease in vit-E levels before phototherapy when compared to control group and same subjects after phototherapy showed decrease in Total bilirubin and Direct bilirubin, MDA and a further decrease in vit-E levels. Conclusion: From these results it is concluded though phototherapy had a beneficial effect in treatment of neonatal hyperbilirubinemia, supplementation of vit-E is necessary in addition to phototherapy.

  19. A Comparison of Y-Type and T-Type Metallic Bilateral Biliary Stents in Patients with Malignant Hilar Biliary Obstruction

    Energy Technology Data Exchange (ETDEWEB)

    Koh, Esther; Jin, Gong Yong; Hwang, Seung Bae; Choi, Eun Jung; Song, Ji Soo; Han, Young Min; Kwon, Keun Sang [Dept. of Chonbuk National University Hospital and Medical School, Jeonju (Korea, Republic of)

    2013-04-15

    To compare the Y type (side-by-side) and T type (stent-in-stent) bilateral biliary metal stenting in malignant hilar obstruction in terms of treatment outcomes, including post-stenting serum bilirubin level and stent patency. 41 consecutive patients with advanced hilar malignancies who underwent percutaneous placement of bilateral metallic stents - Y (n = 23) and T types (n = 18) - were retrospectively reviewed. We evaluated stent patency after the procedure by cholangiogram and abdominal CT. Pre- and post-stenting serum bilirubin level (total, direct bilirubin) at 1 week and at 1 month were compared. Student t-test and Kaplan-Meier method were used in the statistical analysis. After comparing the median stent patency according to both types, they did not differ significantly (Y: 38 days, T: 61 days; p 0.141). There was a more decrease in the total and direct bilirubin of the T type compared to the Y type after 1 week (p = 0.013, 0.025). However, no significant difference existed between the decreasing bilirubin rates of both types after 1 month (p = 0.923, 0.742). In patients with malignant hilar obstruction, both Y and T type bilateral metallic biliary stents are effective methods. Stent patency and bilirubin decrease rates were not significantly different.

  20. A Comparison of Y-Type and T-Type Metallic Bilateral Biliary Stents in Patients with Malignant Hilar Biliary Obstruction

    International Nuclear Information System (INIS)

    To compare the Y type (side-by-side) and T type (stent-in-stent) bilateral biliary metal stenting in malignant hilar obstruction in terms of treatment outcomes, including post-stenting serum bilirubin level and stent patency. 41 consecutive patients with advanced hilar malignancies who underwent percutaneous placement of bilateral metallic stents - Y (n = 23) and T types (n = 18) - were retrospectively reviewed. We evaluated stent patency after the procedure by cholangiogram and abdominal CT. Pre- and post-stenting serum bilirubin level (total, direct bilirubin) at 1 week and at 1 month were compared. Student t-test and Kaplan-Meier method were used in the statistical analysis. After comparing the median stent patency according to both types, they did not differ significantly (Y: 38 days, T: 61 days; p 0.141). There was a more decrease in the total and direct bilirubin of the T type compared to the Y type after 1 week (p = 0.013, 0.025). However, no significant difference existed between the decreasing bilirubin rates of both types after 1 month (p = 0.923, 0.742). In patients with malignant hilar obstruction, both Y and T type bilateral metallic biliary stents are effective methods. Stent patency and bilirubin decrease rates were not significantly different.

  1. The UGT1A1* allele and disease in childhood

    DEFF Research Database (Denmark)

    Padkær Petersen, Jesper

    Baggrund: Bilirubin er slutproduktet i hæms metabolisme. Ukonjugeret bilirubin er neuro-toksisk, men også en potent antioxidant af mulig klinisk relevans. Fortolkningen af observationelle bilirubin studier vanskeliggøres af potentiel revers kausalitet og adskillige tænkelige confoundere. En måde...... at adressere disse udfordringer på er at benytte UGT1A1*28 allelen som instrument variabel for bilirubin. Denne genetiske variation forklarer 18 % af alle variationer i serum bilirubin i kaukasiske populationer. Det er foreslået at UGT1A1*28 er en beskyttende antioxidativ genetisk adaptation, men den har også...... var UGT1A1*28 genotyper ikke associeret til akut respiratorisk sygdom, men en risikofaktor for varighed af respiratorisk sygdom Konklusion: Den manglende association mellem UGT1A1*28 genotyper og ALL hos børn indikerer at bilirubin ikke har nogen beskyttende antioxidant effekt mod denne sygdom. Den...

  2. Evaluation of Serum Zinc Levels in Hyperbilirubinemic Neonates Before and After Phototherapy

    Directory of Open Access Journals (Sweden)

    Ziba Mosayebi

    2016-03-01

    Full Text Available Background The existing therapeutic methods for neonatal jaundice are costly, time-consuming and potentially risky. Zinc salts can reduce phototherapy duration by precipitating unconjugated bilirubin in the intestine (bilirubin and zinc can form a complex in physiologic pH; however, zinc toxicity is an issue that must be considered since theoretically bilirubin reduction by phototherapy may increase serum zinc levels, making additional zinc supplementation the potential cause of zinc toxicity. Objectives So, our purpose was evaluating the serum zinc level alterations before and after phototherapy, in hyperbilirubinemic newborns. Materials and Methods A prospective cohort study was performed at the children’s medical center of Tehran University of Medical Sciences from 2012 to 2014. Healthy, full-term exclusively breast fed newborns with non-hemolytic jaundice were enrolled in the study. Participants were divided into two groups based on serum bilirubin levels (TSB 200 in only neonates with severe hyperbilirubinemia. Conclusions Phototherapy increases serum zinc level by reducing bilirubin level so that additional supplementation of this element can lead potentially to zinc toxicity.

  3. [How reliable are assays with the ictometer? Comparative studies with direct measurement of billirubin and a diazo technique (author's transl)].

    Science.gov (United States)

    Schulz, D; Gerstheimer, A

    1976-01-01

    Comparison of measurements of a diazo technique with those of a direct assessment of bilirubin with the photo-ictometer type II (Hirtz & Co., Cologne). Comparative analysis of total bilirubin-concentration in 172 non-hemolytic sera of neonates and in dilution series with and without contamination by hemoglobin and/or lipid-suspension gave the following results and conclusions drawn from them: 1. In non-contaminated sera the relation between the two techniques is linear, well correlated, parallel and with little divergence. 2. In contrast to the ictometer the diazo technique used underrates the bilirubin content in hemolytic sera. 3. In contrast to the diazo technique the ictometer underrates the bilirubin content in strongly turbid sera. 4. The precision of the ictometer is superior in series and from day to day to the already good precision of the diazo technique. 5. The standard built- in after calibration has to be checked daily and adjusted during the first working hour of the ictometer on several occasions. 6. In order to aboid major systematic faults each apparatus should be compared with a safely calibrated technique. 7. The very simple and rapidly serviced apparatus is suitable for the assay of total bilirubin in sera of the newborn. For older neonates and after exchanges transfusions the results should not be trusted. PMID:943668

  4. Jaundice: a basic review

    Directory of Open Access Journals (Sweden)

    Muhammad Waseem Abbas

    2016-05-01

    Full Text Available Jaundice is a complex disease. Jaundice is actually the high bilirubin level in the body. Yellowing of skin, mucous membranes and skin are common presentations of jaundice. Jaundice has various variants including pre-hepatic jaundice (due to hemolysis of red blood cells, hepatic jaundice (due to defect in capture, conjugation and excretion of bilirubin by liver and post hepatic jaundice (due to the obstruction of extra hepatobiliary system. The causes of various variants of Jaundice is either acquired or congenital. High plasma bilirubin level can cause various manifestations involving satiety, gastrointestinal bleeding, diarrhea, anemia, edema, weight-loss and can be fatal because it can cause psychosis, lethargy, seizures, coma or even death. High bilirubin level can help in the diagnosis of Jaundice. Differential diagnosis of various variants of Jaundice can be carried out on the basis of bilirubin level (conjugated and unconjugated, ultrasonography and other radiological techniques. The proper management of Jaundice is high water intake and low fat diet. The primary effective treatment for pre-hepatic jaundice and neonatal physiological jaundice is phototherapy. Infusion of immunoglobulins is also used for treatment of pre-hepatic jaundice. Proper nutrition, steroids and immunosuppressant are used for treatment of hepatic jaundice. The treatment for post hepatic jaundice is decompression and surgery. [Int J Res Med Sci 2016; 4(5.000: 1313-1319

  5. Pancreatic islet regeneration and some liver biochemical parameters of leaf extracts of Vitex doniana in normal and streptozotocin-induced diabetic albino rats

    Institute of Scientific and Technical Information of China (English)

    Okpe Oche; Ibrahim Sani; Njoku Godwin Chilaka; Ndidi Uche Samuel; Atabo Samuel

    2014-01-01

    Objective: To test two water soluble extracts (aqueous and ethanolic) obtained from the leaves ofVitex doniana in normal and streptozotocin-induced diabetic rats for their effects on pancreatic endocrine tissues and serum marker enzymes for a period of 21 d. Methods: A total of 55 rats divided into 11 groups of 5 rats each were assigned into diabetic and non-diabetic groups and followed by a daily administration of ethanolic and aqueous extracts for 21 d. Group 1 was the normal control while group 7 was treated with standard drug.Results:The histopathological studies of the diabetic rats indicated increase in the volume density of islets, percent of β-cells and size of islet in the groups that received the plant extracts, which suggested regeneration of β-cells along with β-cells repairs, as compared with the non-treated diabetic control which showed complete degeneration of the islet cells. There was significant reduction (P0.01) in the serum activities of marker enzymes was observed for non-diabetic treated rats. Results of total bilirubin, direct bilirubin and unconjugated bilirubin showed that diabetic control group was significantly higher (P0.01) in total bilirubin and direct bilirubin compared with the normal control.Conclusion:This herbal therapy appears to bring about repair/regeneration of the endocrine pancreas and hepatic cells protection in the diabetic rat.

  6. 体内胆红素水平对高血压患者的影响

    Institute of Scientific and Technical Information of China (English)

    温晓俐; 赵兴胜

    2016-01-01

    Heme metabolism will produce bilirubin ,bilirubin in the role of heme oxygenase is decomposed into biliverdin biliverdin reductase role will change back to bilirubin .At the same time for patients with high blood pressure ,the level of bilirubin in the body will have an impact on patients . In this article ,the effects of different levels of bilirubin on the blood pressure in patients with hypertension were studied .%血红素代谢后会产生胆红素,胆红素在血红素氧合酶的作用下分解成胆绿素,胆绿素在还原酶的作用下会变回胆红素。同时对于高血压患者来说,体内胆红素的水平高低也会对患者产生影响。在本篇文章中,研究了体内胆红素水平的不同对高血压患者产生的影响。

  7. Clinical Observation of Treatment of Hyperbilirubinemia in the Newborn by Integrated Traditional Chinese and Western Medicine

    Institute of Scientific and Technical Information of China (English)

    孟浦; 周东风; 赵萍; 夏传雄

    2002-01-01

    Objective: To find a method of treatment for correcting hyperbilirubinemia timely and effectively to prevent bilirubin induced cerebral damage in the newborn. Methods: The newborns with hyperbilirubinemia in the treated group were treated with conventional treatment plus Butyribacterial preparation (BBP) and Simo Decoction (SMD, 四磨饮) taken orally, and the effect was compared with that in control group A treated with conventional treatment only and that in control group B treated with conventional treatment plus BBP. Results: The mean daily decreasing rate of bilirubin in the treated group was 51.11±25.03 μmol/L, which was higher than that in control groups A (39.36±22.44 μmol/L) and B (43.24±24.18 μmol/L), respectively (P<0.01 and P<0.05). The bilirubin decreasing value on the first day and the speed of bilirubin decreasing (to 102.6 μmol/L) in the treated group were both higher than those in the control groups, P<0.01. Conclusion: The combined therapy of conventional treatment plus BBP and SMD could rapidly reduce the blood bilirubin level in the newborn with hyperbilirubinemia, and shorten the therapeutic course markedly, and the therapeutic effect is superior to that of the conventional treatment alone or that of the conventional treatment plus BBP only.

  8. Measurements and monitoring of phototherapy in newborn jaundice

    Energy Technology Data Exchange (ETDEWEB)

    Sisson, T.R.

    Hyperbilirubinemia in the newborn (neonatal jaundice) may cause irreversible brain damage if plasma concentrations of bilirubin exceed the number of binding sites on albumin and other blood components. Phototherapy or exchange transfusions to prevent the excessive rise in concentration of the pigment should be instituted in appropriate clinical situations. In phototherapy, the jaundiced infant is exposed to visible light containing the wavelength (about 450 nm) bilirubin will absorb. Because bilirubin is quite photolabile and will readily isomerize in vivo, it is rapidly converted to excretable forms. The effectiveness of this therapy, however, depends upon the maintenance of adequate radiant flux in the required wavelength. Energy output and spectral distributions of phototherapy lamps must be measured. The long-term effects of irradiation of newborn infants over several days are not yet known.

  9. Validity of diagnostic codes and laboratory measurements to identify patients with idiopathic acute liver injury in a hospital database

    DEFF Research Database (Denmark)

    Udo, Renate; Maitland-van der Zee, Anke H; Egberts, Toine C G;

    2016-01-01

    of liver enzyme values (ALT > 2× upper limit of normal (ULN); AST > 1ULN + AP > 1ULN + bilirubin > 1ULN; ALT > 3ULN; ALT > 3ULN + bilirubin > 2ULN; ALT > 10ULN) and (II) algorithms based on solely liver enzyme values (ALT > 3ULN + bilirubin > 2ULN; ALT > 10ULN). Hospital medical records were reviewed......PURPOSE: The development and validation of algorithms to identify cases of idiopathic acute liver injury (ALI) are essential to facilitate epidemiologic studies on drug-induced liver injury. The aim of this study is to determine the ability of diagnostic codes and laboratory measurements...... 32% (13/41) to 48% (43/90) with the highest PPV found with ALT > 2ULN. The PPV for (II) algorithms with liver test abnormalities was maximally 26% (150/571). CONCLUSIONS: The algorithm based on ICD-9-CM codes indicative of ALI combined with abnormal liver-related laboratory tests is the most...

  10. Follow-up of extreme neonatal hyperbilirubinaemia in 5- to 10-year-old children

    DEFF Research Database (Denmark)

    Vandborg, Pernille Kure; Hansen, Bo Mølholm; Greisen, Gorm;

    2015-01-01

    AIM: To investigate whether infants with neonatal hyperbilirubinaemia but without intermediate or advanced bilirubin encephalopathy develop long-term sequelae, with impairment of motor development, executive function, or hearing. METHOD: This nested double-cohort study included 167 exposed children...... spectrum disorder recorded in national registries. INTERPRETATION: No evidence was found of an increased risk of deficits in motor development, executive function, or hearing in children with extreme hyperbilirubinaemia who did not have intermediate or advanced bilirubin encephalopathy....... (107 males, 60 females) born in Denmark 2000 to 2005 at gestational age ≥35 weeks with a total serum bilirubin ≥450 μmol/L (26.3mg/dL) and 163 age-, sex-, and gestational age-matched unexposed children (103 males, 60 females). The children were examined at a mean age of 7.7 years (SD 1.7y) using...

  11. Efficacy of zinc sulfate in reducing unconjugated hyperbilirubinemia in neonates

    Directory of Open Access Journals (Sweden)

    Somayyeh Hashemian

    2014-09-01

    Full Text Available Hyperbilirubinemia is a common disease and unconjugated hyperbilirubinemia has been seen mainly in neonates. Severe form of unconjugated hyperbilirubinemia may cause kernicterus and even death. Conventional treatment for severe unconjugated hyperbilirubinemia consists of phototherapy and exchange transfusion that have several known disadvantages; specially exchange transfusion is associated with a significant morbidity and even mortality. These harmful effects indicate the need to develop alternative pharmacological treatment strategies for unconjugated hyperbilirubinemia. One of these pharmacological agents is zinc salts. Zinc has been shown to lower the bilirubin levels by inhibition of the enterohepatic cycling of unconjugated bilirubin. Oral zinc has been shown to reduce serum unconjugated bilirubin in animals, adolescents and low birth weight neonates. However, studies in healthy term neonates given oral zinc showed no reduction in hyperbilirubinemia based on daily measurement. In order to improve the accuracy, hyperbilirubinemia may be determined based on measurements every hour. More studies are needed to know the effect of zinc in neonatal jaundice.

  12. Effect of phototherapy with turquoise vs. blue LED light of equal irradiance in jaundiced neonates

    DEFF Research Database (Denmark)

    Ebbesen, Finn; Vandborg, Pernille K; Madsen, Poul H;

    2016-01-01

    for phototherapy is light emitting diodes (LEDs). AIM: Compare the bilirubin reducing effect in jaundiced neonates treated either with turquoise- or blue LED light with peak emission at 497 nm or 459 nm, respectively, with equal irradiance on the infants. METHODS: Infants with gestational age ≥33 weeks......) decrease of total serum bilirubin was 35.3% (32.5; 37.3) and 33.1% (27.1; 36.8) for infants treated with turquoise- and blue light, respectively. The difference was non-significant (p=0.53). The decrease was positively correlated to postnatal age and negatively to birth weight. CONCLUSION: Using LED light...... of equal irradiance, turquoise- and blue light had equal bilirubin reducing effect on hyperbilirubinemia of neonates.Pediatric Research (2015); doi:10.1038/pr.2015.209....

  13. 生理盐水灌肠治疗新生儿高胆红素血症的临床观察

    Institute of Scientific and Technical Information of China (English)

    张娟

    2015-01-01

    新生儿黄疸是新生儿时期常见症状之一,尤其是早期新生儿,其发生与新生儿胆红素产生增多、肝细胞功能不成熟、胆红素肠肝循环增加有关[1]。新生儿高胆红素血症多以未结合胆红素增高为主。未结合胆红素对神经细胞有毒性作用,它通过血脑屏障作用于脑细胞能引起脑损伤及中毒性脑病,可留有不同程度的神经系统后遗症,严重者甚至死亡[2]。临床上,以总胆红素水平及未结合胆红素水平作为胆红素脑病危险因素来指导新生儿胆红素血症的防治。%neonatal jaundice is one of the common symptoms of neonatal period,especially in early newborns.The occurrence and neonatal bilirubin have increased,liver cell function is not mature and enterohepatic circulation of bilirubin increased (1).The unconjugated hyperbilirubinemia increase.Unconjugated bilirubin can have toxic effects on nerve cells,which through the blood brain barrier in brain cells can cause brain injury and poisoning encephalopathy,there may be a different degree of neurological sequelae,serious and even death (2).Clinically,the serum levels of total bilirubin and unbound bilirubin levels as risk factors of bilirubin encephalopathy to guide the prevention and treatment of neonatal hyperbilirubinemia.

  14. Causes of immune dysfunction in hyperbilirubinemia model rats

    Institute of Scientific and Technical Information of China (English)

    Xiao-Min Sun; Ping Kang; Ke Tao

    2015-01-01

    Objective:To explore the causes of immune dysfunction in neonatal rats with hyperbilirubinemia.Methods: A total of 60 newborn SD rats were equally randomized into normal saline (NS) group, LPS control group, bilirubin control group, low-dose group and high-dose group. After anesthesia, 0.1 mL NS was given to the NS and LPS control group and different doses of bilirubin for the other groups; 1 h later, the NS and bilirubin control group received the intraperitoneal injection of 0.05 mL NS and 1mg/kg LPS for the other groups. After 5 or 24 hours of model establishment, spleens were collected for detecting the expression levels of MyD88 and p-TAK1 protein and the spleen cells apoptosis by immunohistochemmistry and TUNEL method. After 24 hours of model establishment, serum inflammatory factors levels and T cell subsets distribution were determined by ELISA and flow cytometry.Results: In contrast to low-dose bilirubin, high-dose bilirubin could induce spleen cells apoptosis in coordination with LPS. After 5 hours of model establishment, compared with NS group, MyD88 expression level in low-dose group elevated while p-TAK1 level in high-dose group reduced (P<0.05). In high-dose group, inflammotory factors levels and CD8+ T cells percentage were all higher than LPS control and NS group (P<0.05), while CD4+ T cells percentage was lower than NS group (P<0.05).Conclusions:High-concentration plasma bilirubin in coordination with LPS could inhibit NF-κB signal pathways activation and aggravate inflammatory reaction, thus caused immunosuppression with inflammation cascade, which resulted in the immune dysfunction.

  15. Lineage-Specific Changes in Biomarkers in Great Apes and Humans.

    Directory of Open Access Journals (Sweden)

    Claudius Ronke

    Full Text Available Although human biomedical and physiological information is readily available, such information for great apes is limited. We analyzed clinical chemical biomarkers in serum samples from 277 wild- and captive-born great apes and from 312 healthy human volunteers as well as from 20 rhesus macaques. For each individual, we determined a maximum of 33 markers of heart, liver, kidney, thyroid and pancreas function, hemoglobin and lipid metabolism and one marker of inflammation. We identified biomarkers that show differences between humans and the great apes in their average level or activity. Using the rhesus macaques as an outgroup, we identified human-specific differences in the levels of bilirubin, cholinesterase and lactate dehydrogenase, and bonobo-specific differences in the level of apolipoprotein A-I. For the remaining twenty-nine biomarkers there was no evidence for lineage-specific differences. In fact, we find that many biomarkers show differences between individuals of the same species in different environments. Of the four lineage-specific biomarkers, only bilirubin showed no differences between wild- and captive-born great apes. We show that the major factor explaining the human-specific difference in bilirubin levels may be genetic. There are human-specific changes in the sequence of the promoter and the protein-coding sequence of uridine diphosphoglucuronosyltransferase 1 (UGT1A1, the enzyme that transforms bilirubin and toxic plant compounds into water-soluble, excretable metabolites. Experimental evidence that UGT1A1 is down-regulated in the human liver suggests that changes in the promoter may be responsible for the human-specific increase in bilirubin. We speculate that since cooking reduces toxic plant compounds, consumption of cooked foods, which is specific to humans, may have resulted in relaxed constraint on UGT1A1 which has in turn led to higher serum levels of bilirubin in humans.

  16. Pathogenesis of gallstones.

    Science.gov (United States)

    Carey, M C

    1992-01-01

    Gallstones are composed principally of cholesterol monohydrate crystals (cholesterol stones) or the acid salt of calcium bilirubinate (pigment stones). Cholesterol stones and the black variety of pigment gallstones form in sterile gallbladder bile whereas brown pigment gallstones form in infected bile. Biliary supersaturation is the principal pathophysiological defect and is hepatic in origin. Supersaturation results from excessive secretion of cholesterol or bilirubin conjugates, the precursors of unconjugated bilirubin, and/or, deficient secretion of bile salt and lecithin, the solubilizers of these otherwise insoluble lipids. As has now being clarified for cholesterol stones, an imbalance in pro- and antinucleating biliary proteins, hypersecretion of gallbladder mucin and gallbladder dysmotility possibly from cholesterol "toxicity" to sarcolemma, all interact to promote nucleation. Crystallisation results in suspension of cholesterol crystals or bilirubinate salts in gallbladder mucin gel and is known as "biliary sludge". It is believed today that this stage is essential for evolution of both cholesterol and pigment stones. Brown pigment gallstones form principally in the bile ducts. These stones result from infection of the biliary tree, most commonly due to obstruction from migrating gallbladder stones. Chemical compositions of brown and black pigment stones are different: In black stones, calcium bilirubinate is polymerized and oxidatively degraded but in brown stones, calcium bilirubinate is present as the unpolymerised salt. Brown stones differ also from black stones in containing calcium fatty acid soaps, a result of bacterial phospholipase A1 hydrolysis of biliary lecithin. Both types of pigment gallstones may contain crystalline inorganic calcium salts especially carbonate (gallbladder stones) and phosphate (bile ducts stones). Since a molecular understanding of the multiple defects that lead to cholesterol and pigment gallstones is becoming a reality

  17. Three-dimensional drip infusion CT cholangiography in patients with suspected obstructive biliary disease: a retrospective analysis of feasibility and adverse reaction to contrast material.

    Directory of Open Access Journals (Sweden)

    Smedby Ö

    2006-04-01

    Full Text Available Abstract Background Computed Tomography Cholangiography (CTC is a fast and widely available alternative technique to visualise hepatobiliary disease in patients with an inconclusive ultrasound when MRI cannot be performed. The method has previously been relatively unknown and sparsely used, due to concerns about adverse reactions and about image quality in patients with impaired hepatic function and thus reduced contrast excretion. In this retrospective study, the feasibility and the frequency of adverse reactions of CTC when using a drip infusion scheme based on bilirubin levels were evaluated. Methods The medical records of patients who had undergone upper abdominal spiral CT with subsequent three-dimensional rendering of the biliary tract by means of CTC during seven years were retrospectively reviewed regarding serum bilirubin concentration, adverse reaction and presence of visible contrast media in the bile ducts at CT examination. In total, 153 consecutive examinations in 142 patients were reviewed. Results Contrast media was observed in the bile ducts at 144 examinations. In 110 examinations, the infusion time had been recorded in the medical records. Among these, 42 examinations had an elevated bilirubin value (>19 umol/L. There were nine patients without contrast excretion; 3 of which had a normal bilirubin value and 6 had an elevated value (25–133 umol/L. Two of the 153 examinations were inconclusive. One subject (0.7% experienced a minor adverse reaction – a pricking sensation in the face. No other adverse effects were noted. Conclusion We conclude that drip infusion CTC with an infusion rate of the biliary contrast agent iotroxate governed by the serum bilirubin value is a feasible and safe alternative to MRC in patients with and without impaired biliary excretion. In this retrospective study the feasibility and the frequency of adverse reactions when using a drip infusion scheme based on bilirubin levels has been evaluated.

  18. Three-dimensional drip infusion CT cholangiography in patients with suspected obstructive biliary disease: a retrospective analysis of feasibility and adverse reaction to contrast material

    International Nuclear Information System (INIS)

    Computed Tomography Cholangiography (CTC) is a fast and widely available alternative technique to visualise hepatobiliary disease in patients with an inconclusive ultrasound when MRI cannot be performed. The method has previously been relatively unknown and sparsely used, due to concerns about adverse reactions and about image quality in patients with impaired hepatic function and thus reduced contrast excretion. In this retrospective study, the feasibility and the frequency of adverse reactions of CTC when using a drip infusion scheme based on bilirubin levels were evaluated. The medical records of patients who had undergone upper abdominal spiral CT with subsequent three-dimensional rendering of the biliary tract by means of CTC during seven years were retrospectively reviewed regarding serum bilirubin concentration, adverse reaction and presence of visible contrast media in the bile ducts at CT examination. In total, 153 consecutive examinations in 142 patients were reviewed. Contrast media was observed in the bile ducts at 144 examinations. In 110 examinations, the infusion time had been recorded in the medical records. Among these, 42 examinations had an elevated bilirubin value (>19 umol/L). There were nine patients without contrast excretion; 3 of which had a normal bilirubin value and 6 had an elevated value (25–133 umol/L). Two of the 153 examinations were inconclusive. One subject (0.7%) experienced a minor adverse reaction – a pricking sensation in the face. No other adverse effects were noted. We conclude that drip infusion CTC with an infusion rate of the biliary contrast agent iotroxate governed by the serum bilirubin value is a feasible and safe alternative to MRC in patients with and without impaired biliary excretion. In this retrospective study the feasibility and the frequency of adverse reactions when using a drip infusion scheme based on bilirubin levels has been evaluated

  19. Association of laboratory parameters with viral factors in patients with hepatitis C

    Directory of Open Access Journals (Sweden)

    Khaliq Saba

    2011-07-01

    Full Text Available Abstract Background and Aims HCV infection may lead to hepatic fibrosis. In this study, we tried to determine whether there is any correlation of HCV genotypes and viral load to the clinical parameters such as ALT, AST, ALP, bilirubin, Hb level, patient's age and gender; and then correlated this association with disease progression in liver biopsy samples. Methods In cross-sectional and observational study, 6048 serum HCV RNA positive patients were chosen. The study consists of 53 months from March 2006 to September 2010. Patients were divided into three cohorts to validate our data. Statistical analysis and correlation of lab parameters with viral factors was determined by using SPSS version 16. Results The most prevalent genotype was 3 (70.9% followed by 1 (13.3% and 4 (7.4%, collectively. During Univariate analysis, in all cohorts; serum bilirubin, ALP, ALT and AAR showed significant correlation with genotypes, however multivariate analysis showed that all genotypes except 4a have no association with host biochemical markers. Disease progression was also independent of all genotypes. Serum ALP, ALT, bilirubin and viremea levels were significantly elevated in patients with genotype 4a. Viral load showed negative association with serum bilirubin (r = -0.112, P = 0.000 and ALP levels (r = -0.098, P = 0.000. We observed positive correlation of ALP and bilirubin levels, while negative associations of viral load with HCV liver disease progression. Conclusion Disease progression seems independent of the genotypes. Relationship between ALP and bilirubin with viral load may be an attractive marker to guess disease progression in patients with hepatitis C.

  20. Prognostic value of Child-Turcotte criteria in medically treated cirrhosis

    DEFF Research Database (Denmark)

    Christensen, E; Schlichting, P; Fauerholdt, L;

    1984-01-01

    The Child- Turcotte criteria (CTC) (based on serum bilirubin and albumin, ascites, neurological disorder and nutrition) are established prognostic factors in patients with cirrhosis having portacaval shunt surgery. The objective of this study was to evaluate the prognostic value of CTC...... compared using the log-rank test. Survival decreased significantly with increasing degree of abnormality (A----B----C) of albumin (p less than 0.001), ascites (p less than 0.001), bilirubin (p = 0.02) and nutritional status (p = 0.03). Survival was insignificantly influenced by neurological status (p = 0...

  1. Hemolysis in Preterm Neonates.

    Science.gov (United States)

    Christensen, Robert D; Yaish, Hassan M

    2016-06-01

    Hemolysis can be an important cause of hyperbilirubinemia in premature and term neonates. It can result from genetic abnormalities intrinsic to or factors exogenous to normal to red blood cells (RBCs). Hemolysis can lead to a relatively rapid increase in total serum/plasma bilirubin, hyperbilirubinemia that is somewhat slow to fall with phototherapy, or hyperbilirubinemia that is likely to rebound after phototherapy. Laboratory methods for diagnosing hemolysis are more difficult to apply, or less conclusive, in preterm infants. Transfusion of donor RBCs can present a bilirubin load that must be metabolized. Genetic causes can be identified by next-generation sequencing panels. PMID:27235204

  2. A decision-making tool for exchange transfusions in infants with severe hyperbilirubinemia in resource-limited settings.

    Science.gov (United States)

    Olusanya, B O; Iskander, I F; Slusher, T M; Wennberg, R P

    2016-05-01

    Late presentation and ineffective phototherapy account for excessive rates of avoidable exchange transfusions (ETs) in many low- and middle-income countries. Several system-based constraints sometimes limit the ability to provide timely ETs for all infants at risk of kernicterus, thus necessitating a treatment triage to optimize available resources. This article proposes a practical priority-setting model for term and near-term infants requiring ET after the first 48 h of life. The proposed model combines plasma/serum bilirubin estimation, clinical signs of acute bilirubin encephalopathy and neurotoxicity risk factors for predicting the risk of kernicterus based on available evidence in the literature. PMID:26938921

  3. An Unusual Case of Rapidly Progressive Hyperbilirubinemia

    Directory of Open Access Journals (Sweden)

    Kimberly M. Thornton

    2013-01-01

    Full Text Available We present an unusual case of hyperbilirubinemia with rapid early progression leading to bilirubin encephalopathy in a term neonate. Despite early recognition and intervention, the total serum bilirubin reached a maximum level of 39 mg/dL at 32 hours of life. Prior to an emergent exchange transfusion, the patient’s diagnostic evaluation was significant for Coombs-negative microangiopathic hemolytic anemia and thrombocytopenia. Further testing revealed a deficiency of ADAMTS13 protein, or von Willebrand factor-cleaving protease, a finding diagnostic of congenital thrombotic thrombocytopenic purpura, or Upshaw-Schulman syndrome. This rare disease is often misdiagnosed, especially in the newborn period.

  4. Metalloporphyrins – an update

    Directory of Open Access Journals (Sweden)

    Stephanie eSchulz

    2012-04-01

    Full Text Available Metalloporphyrins are structural analogues of heme and their potential use in the management of neonatal hyperbilirubinemia has been the subject of considerable research for more than three decades. The pharmacological basis for using this class of compounds to control bilirubin levels is the targeted blockade of bilirubin production through the competitive inhibition of heme oxygenase (HO, the rate-limiting enzyme in the heme degradative pathway. Ongoing research continues in the pursuit of identifying ideal metalloporphyrins, which are safe and effective, by defining therapeutic windows and targeted interventions for the treatment of neonatal hyperbilirubinemia.

  5. Surveillance of extreme hyperbilirubinaemia in Denmark. A method to identify the newborn infants

    DEFF Research Database (Denmark)

    Bjerre, J.V.; Petersen, Jes Reinholdt; Ebbesen, F.

    2008-01-01

    serum bilirubin concentration (TSB) > or = 450 micromol/L were obtained by linking laboratory data to the unique Danish personal identification number. RESULTS: In total, 113 infants were included, that is, an incidence of 45/100,000 live births. Thirty-seven infants presented in hospital, 2 after home...... bilirubin encephalopathy; one infant had advanced-phase symptoms. Four infants received an exchange transfusion. ABO blood group incompatibility was present in 52 infants. Thirty-seven infants were of non-Caucasian descent. CONCLUSION: A method to obtain the national epidemiological data is presented...

  6. Laboratory indicators of the diagnosis and course of imported malaria

    DEFF Research Database (Denmark)

    Gjørup, Ida E; Vestergaard, Lasse S; Møller, Kirsten;

    2007-01-01

    prospectively a group of patients with imported Plasmodium falciparum (n=28) or P. vivax/P. ovale (n=12) infection, respectively, and assessed haemoglobin, leucocytes, thrombocytes, C-reactive protein, coagulation factor II-VII-X, lactate dehydrogenase and bilirubin during 7 d of admission and weekly until d 28......-reactive protein, lactate dehydrogenase and bilirubin were significantly higher in the malaria group. The differences were particularly strong with falciparum malaria. By contrast, haemoglobin levels were not affected. In conclusion, our study emphasizes the role of a few commonly analysed laboratory parameters...

  7. Hyperbilirubinemia in newborns with gestation≥35 weeks%胎龄≥35周的新生儿高胆红素血症(摘译)

    Institute of Scientific and Technical Information of China (English)

    Koravangattu SANKARAN; 姚跃

    2010-01-01

    @@ 1 Introduction The prevention, detection and management of neonatal jaundice in relatively healthy term and near term infants continue to remain a challenge, partly because jaundice is so common, and kernicterus so rare[1-3]. The term ker-nicterus is now used interchangeably with both acute and chronic bilirubin toxicity and appears to have a current incidence of approximately 1:100 000[4-5]. In addition there are many other children who require intensive thera-py in order to interrupt the rise in serum bilirubin concen-trations[6].

  8. Prevalence of hepatobiliary dysfunction in a regional group of patients with chronic inflammatory bowel disease

    DEFF Research Database (Denmark)

    Wewer, V; Gluud, C; Schlichting, P;

    1991-01-01

    -22%) had at least 1 abnormal laboratory value. Serum bilirubin was elevated in 5%, alkaline phosphatases in 8%, aspartate aminotransferases in 4%, and alanine aminotransferases in 8% of the patients. Two per cent had decreased plasma coagulation factors (2.7 and 10) and serum albumin. Further diagnositc...... laboratory value. Serum bilirubin was elevated in 2%, alkaline phosphatases in 18%, asparetate aminotransferases in 3%, and alanine aminotransferases in 10% of the patients. One per cent had decreased plasma coagulation factors (2.7 and 10) and serum albumin concentrations. Three patients (2%) fulfilled...

  9. Clinical rounds in the well-baby nursery: treating jaundiced newborns.

    Science.gov (United States)

    Maisels, M J

    1995-10-01

    Ten pearls (and pitfalls) in the management of the jaundiced newborn: Remember to take a history. Ask about jaundice in previous siblings and check family ethnicity. Don't ignore jaundice in the first 24 hours--it is considered pathologic until proven otherwise. Some normal infants may appear jaundiced and have a bilirubin level of 5 mg/dL at 23 hours and 59 minutes. On the other hand, a bilirubin level of 5 mg/dL at 10 hours is almost certainly pathologic. Use your judgment. Don't treat 35 to 37 week gestation infants as if they were full-term infants. Although these babies are cared for in well-baby nurseries and are generally treated like full-term infants, they are not full term. They are not as vigorous and do not nurse as well as full-term infants. Infants at 37 weeks gestation are four times more likely to have a serum bilirubin level greater than 13 mg/dL than those at 40 weeks gestation. Don't send 35-week gestation infants home before 48 hours. Document your assessment, particularly if the infant is being discharged early. Document the presence or absence of jaundice and its severity. A late rising bilirubin is typical of G6PD deficiency. Think about the ethnic background: G6PD deficiency is much more likely to occur in families from Greece, Turkey, Sardinia, and Nigeria, and particularly in Sephardic Jews from Iraq, Iran, Syria, and Kurdistan. Your practice may not contain many such families but remember in today's world of travel and intermarriage, etc, these genes are ubiquitous and the diagnosis of G6PD deficiency should always be considered in a newborn child with a significant elevation of bilirubin, particularly if it is a male and the rise in bilirubin is of late onset. Don't use homeopathic doses of phototherapy. As with any drug, phototherapy should be provided in a therapeutic dose (see above), but with the light sources commonly used, it is impossible to overdose the patient. Don't ignore a failure of response to phototherapy. If the bilirubin

  10. Incidence of Thrombocytopenia in Idiopathic Hyperbilirubinemic Newborns

    Directory of Open Access Journals (Sweden)

    Hassan Boskabadi

    2014-06-01

    Conclusion: This study determines higher rate of thrombocytopenia among idiopathic hyperbilirubinemic neonates (36% and helps the practitioner to be aware of this association and avoid unnecessary investigations.We did not find a significant correlation between serum bilirubin values and thrombocytopenia.

  11. Toxicological evaluation of the hydro-alcohol extract of the dry leaves of Peumus boldus and boldine in rats.

    Science.gov (United States)

    Almeida, E R; Melo, A M; Xavier, H

    2000-03-01

    The hydro-alcohol extract of the dry leaves of Peumus boldus and boldine, showed abortive and teratogenic action and changes in the blood levels of bilirubin, cholesterol, glucose, alanine aminotransferase (ALT), aspartate aminotransferase (AST) and urea in rats. The long term administration of the extract and boldine did not cause histological modification during a period of 90 days. PMID:10685105

  12. [Extreme hyperbilirubinemia associated with spherocytosis and choledocholithiasis].

    Science.gov (United States)

    Peralta-Zagal, J A; Hernández-Estrada, M

    1990-01-01

    Spherocytosis conditions the severe destruction of red blood cells. The spleen plays an active and fundamental role in this destruction since it is responsible for the fragility and lability of the red blood cell to the splenic medium. The clinical manifestations are: anemia, jaundice, splenomegaly, and hemolytic and aplastic crisis associated to viral infections. Choledocholithiasis is a manifestation of the disease which can be seen at an early stage, even in less severe cases. Choledocholithiasis is rare and this may be due to immediate surgical intervention. The levels of indirect bilirubin may vary but usually do not exceed 10 mg%, on the rising of direct bilirubin may cause suspicion of liver obstruction or damage. A case of a ten year old boy is reported who was found to have spherocytosis, with severe manifestations, who later developed cholelithiasis and total obstruction of the choledocho and in who the most important clinical manifestation was jaundice due to the increase of total bilirubin to 89 mg%, doubly checked. Both a splenectomy and a cholecystectomy were performed. Subsequent checkups were normal. These levels of bilirubin have not been previously reported. Hyperbilirubinemia; spherocytosis; choledocholithiasis.

  13. cal, therapeutic and histo-morphological studies in primary biliary cirrhosis and primary sclerosing cholangitis

    NARCIS (Netherlands)

    H.J.F. Hoogstraten (Hubert)

    1999-01-01

    textabstractPrimary biliary cirrhosis (PBC) and primary sclerosing cholangitis (PSC) are chronic cholestatic liver diseases, biochemically characterised by an elevated serum bilirubin, alkaline phosphatase (APh) and y-glutamyl transferase (y-GT). Although PBC and PSC have their own distinctive clini

  14. Effects of Hyperbilirubinemia on Auditory Brainstem Response of Neonates Treated with Phototherapy

    Directory of Open Access Journals (Sweden)

    Negin Salehi

    2016-01-01

    Conclusion:  The results of this study underline the importance of the Auditory Brainstem Response Test as an efficient tool for monitoring the auditory brainstem pathway in neonates who are at risk of neurotoxicity and for diagnosing the earliest stages of auditory damage caused by high levels of bilirubin.

  15. The effect of clofibrate and phototherapy on physiological jaundice in term newborns

    Directory of Open Access Journals (Sweden)

    Amir Hosein Hashemian

    2011-09-01

    Full Text Available Background: Clofibrate is an effective anti lipid agent that induces glucuronyltransferase could increase bilirubin conjugation. The aim of this study was to evaluate effect of clofibrate on neonatal physiologic jaundice.Methods: Randomized clinical trial sampling method used and 60 healthy term neonates which were admitted in Imam Reza Hospital of Kermanshah-Iran because of indirect hyperbilirubinemia enrolled into the study. 30 neonates (case group were treated with single oral dose of clofibrate (100/mg plus phototherapy and 30 neonates (control group received only phototherapy. Serum total and direct bilirubin levels were measured at admission, 12 hours later, and then every 24 hours until 96 hours. Results: There were no significant difference between two groups regarding to gender, age, weight and total serum bilirubin level at the admission. Mean values for total bilirubin of serum in case group 12, 24 and 48 hours after admission were significantly lower than control group (P<0.001. The mean of needed time for phototherapy in case group was significantly less than the control group (P<0.00l.Conclusion: It seems that clofibrate plus phototherapy is effective for treatment of neonatal physiologic jaundice in healthy term newborns, although further studies are necessary for evaluation of clofibrate safety as a routine treatments.

  16. Effects of water supplementation on physiological jaundice in breast-fed babies.

    OpenAIRE

    Carvalho, M.; Hall, M.; Harvey, D

    1981-01-01

    The effect of water supplementation in normal, term, breast-fed babies with physiological jaundice was studied. Water supplementation was given to 120 babies and 55 received no extra fluids. There was no significant difference between the two groups when peak serum bilirubin levels and incidence of phototherapy were compared.

  17. Neonatal physiological correlates of near-term brain development on MRI and DTI in very-low-birth-weight preterm infants

    Directory of Open Access Journals (Sweden)

    Jessica Rose, PhD

    2014-01-01

    Results suggest that at near-term age, thalamus WM microstructure may be particularly vulnerable to certain neonatal risk factors. Interactions between albumin, bilirubin, phototherapy, and brain development warrant further investigation. Identification of physiological risk factors associated with selective vulnerability of certain brain regions at near-term age may clarify the etiology of neurodevelopmental impairment and inform neuroprotective treatment for VLBW preterm infants.

  18. The value of hyperbilirubinaemia in the diagnosis of acute appendicitis.

    LENUS (Irish Health Repository)

    Emmanuel, Andrew

    2011-04-01

    No reliably specific marker for acute appendicitis has been identified. Although recent studies have shown hyperbilirubinaemia to be a useful predictor of appendiceal perforation, they did not focus on the value of bilirubin as a marker for acute appendicitis. The aim of this study was to determine the value of hyperbilirubinaemia as a marker for acute appendicitis.

  19. Assessment of Requirement of Routine Intraoperative Cholaniography at Cholecystectomy

    Directory of Open Access Journals (Sweden)

    M Shiryazdi

    2013-12-01

    Conclusion: According to above statistically significant relation, we recommend that in patients who are candidate for cholecystectomy, if elevated preoperative serum alkaline phosphatase or elevated preoperative serum bilirubin or abnormal ultrasound findings were observed, more diagnostic evaluation should be done for them including MRC and ERC.

  20. Reversal of Jaundice in Two Patients with Inoperable Cholangiocarcinoma Treated with Cisplatin and Gemcitabine Combination

    Directory of Open Access Journals (Sweden)

    Maarten Criel

    2012-01-01

    Full Text Available Two patients are presented with severe jaundice, due to inoperable cholangiocarcinoma. The chemotherapeutic approach in patients with severe jaundice is discussed. Many schedules of chemotherapy were developed in this tumor type with normal serum bilirubin. We report here the first successful use of cisplatin and gemcitabine combination chemotherapy in these patients. Tolerability was good and liver function tests gradually improved.

  1. ESPGHAN Committee on Nutrition Position Paper. Intravenous lipid emulsions and risk of hepatotoxicity in infants and children

    DEFF Research Database (Denmark)

    Hojsak, Iva; Colomb, Virginie; Braegger, Christian;

    2016-01-01

    be performed. Available studies found that the use of multicomponent fish oil (FO) containing ILE compared to pure soya bean oil (SO) ILE reduced liver enzymes and bilirubin levels in non-cholestatic children on long-term PN and one other RCT found that FO based ILE reversed cholestasis in a proportion...

  2. 76 FR 4918 - Drug-Induced Liver Injury: Are We Ready to Look?; Public Conference; Request for Comments

    Science.gov (United States)

    2011-01-27

    ... DILI by periodic tests of serum enzyme activities and bilirubin concentration elevations, and how those...). The purpose of this conference is to consider the effect of the recommendations in the guidance for... for industry entitled ``Drug-Induced Liver Injury: Premarketing Clinical Evaluation'' (see 74 FR...

  3. 75 FR 14602 - Guidance for Industry on Drug-Induced Liver Injury: Premarketing Clinical Evaluation; Opening of...

    Science.gov (United States)

    2010-03-26

    ... published guidance document. The purpose of the conference is to consider the effect of the recommendations.... It discussed methods of detecting DILI by periodic tests of serum enzyme activities and bilirubin concentration elevations, and how those laboratory tests might change over time, along with symptoms...

  4. Hepatic clearance mechanism of /sup 99m/Tc-HIDA and its effect on quantitation of hepatobiliary function concise communication

    International Nuclear Information System (INIS)

    Parameters affecting the hepatobiliary clearance of /sup 99m/Tc N(2,6-dimethylphenylcarbamoylmethyl) iminodiacetic acid (Tc-HIDA) were evaluated in dogs. Competitive clearance studies were performed with Tc-HIDA after infusion to plasma saturation levels of an anion, sodium sulfobromophthalein (BSP), and a cation, oxyphenonium. The results demonstrated that Tc-HIDA is transported through hepatocytes by a carrier-mediated organic-anion pathway. The data are consistent with an alteration of the elimination kinetics of Tc-HIDA induced by elevations in the serum bilirubin level, and it is predicted that serum bilirubin at some increased concentration will dominate the distribution and elimination kinetics of Tc-HIDA independently of hepatobiliary status. A quantitative description of liver function in terms of regional distribution and elimination rate constants will require either a pharmacokinetic model that expressly includes the effects of bilirubin from transport binding sites, or the development of new hepatobiliary agents that use a different clearance mechanism from that used by bilirubin

  5. Short-term rat-feeding studies of irradiated bananas and mangoes

    International Nuclear Information System (INIS)

    Bananas and mangoes irradiated at 30 and 50 Krad were fed to albino rats for 12 weeks. Parameter used included food consumption, weight gain, haemoglobin, hematocrit, white and red blood cell counts, differential count, protein, albumin, blood sugar, blood urea nitrogen and bilirubin. Irradiation at the 2 dose levels did not show ill effects. (author)

  6. Non-invasive physiological measurements

    International Nuclear Information System (INIS)

    This book discusses the diagnostic techniques of nondestructive type for monitoring the physiology of various organ systems. The topics covered are: non-invasive assessment of gastric activity; uterine activity, intestinal activity; monitoring of fetal cardiovascular system and bilirubin physiology of infants. Respiratory system of infants is monitored and ultrasonography of heart is discussed

  7. Neonatal jaundice.

    Science.gov (United States)

    Allen, Daniel

    2016-07-01

    Essential facts The National Institute for Health and Care Excellence (NICE) first published guidelines on jaundice in newborn babies in 2010 and updated them in May. Jaundice is caused by raised bilirubin levels when red blood cells are broken down. PMID:27387624

  8. [The jaundiced newborn: which early monitoring for a safe discharge?].

    Science.gov (United States)

    Pratesi, S; Dani, C

    2013-01-01

    Neonatal jaundice is one of the most common causes of prolonged hospital stay or readmission of a near-term or term baby. Reason of concern at early discharge of a jaundiced newborn is that of bilirubin neurotoxicity, even if a serum bilirubin concentration surely toxic for the brain is still unknown. Kernicterus and severe neonatal hyperbilirubinemia are still problems in the third millennium and the American Academy of Pediatrics claimed the pediatric community to increase vigilance in order to reduce the occurrence of these dramatic events. The only existing kernicterus registry is the pilot USA kernicterus registry whose data on 125 kernicteric term and near term babies from 1992 to 2004 have been recently published. Nobody of the kenicteric babies into the USA register had a serum bilirubin levels below 20 mg/dL. All the babies who suffered from kernicteric sequelae were discharged as healthy from hospital and then, 86% of them, readmitted in the first ten days of life. In the majority of babies (69%) a cause of the severe hyperbilirubinemia was not found. Current knowledge on mechanism of neurological damage induced by bilirubin, unfortunately, does not allow to have a universal evidenced based guideline on how to manage neonatal jaundice. Thus, the existing national guidelines contain inevitable differences in the recommended procedure. Waiting for the future italian guidelines the paper illustrates a proposal of management of neonatal jaundice in term or near term newborns based on available scientific evidence and national guidelines published in english language. PMID:24245097

  9. The jaundiced newborn: which early monitoring for a safe discharge?

    Directory of Open Access Journals (Sweden)

    S. Pratesi

    2013-08-01

    Full Text Available Neonatal jaundice is one of the most common causes of prolonged hospital stay or readmission of a near-term or term baby. Reason of concern at early discharge of a jaundiced newborn is that of bilirubin neurotoxicity, even if a serum bilirubin concentration surely toxic for the brain is still unknown. Kernicterus and severe neonatal hyperbilirubinemia are still problems in the third millennium and the American Academy of Pediatrics claimed the pediatric community to increase vigilance in order to reduce the occurrence of these dramatic events. The only existing kernicterus registry is the pilot USA kernicterus registry whose data on 125 kernicteric term and near term babies from 1992 to 2004 have been recently published. Nobody of the kenicteric babies into the USA register had a serum bilirubin levels below 20 mg/dL. All the babies who suffered from kernicteric sequelae were discharged as healthy from hospital and then, 86% of them, readmitted in the first ten days of life. In the majority of babies (69% a cause of the severe hyperbilirubinemia was not found. Current knowledge on mechanism of neurological damage induced by bilirubin, unfortunately, does not allow to have a universal evidenced based guideline on how to manage neonatal jaundice. Thus, the existing national guidelines contain inevitable differences in the recommended procedure. Waiting for the future italian guidelines the paper illustrates a proposal of management of neonatal jaundice in term or near term newborns based on available scientific evidence and national guidelines published in english language.

  10. Oral treatment of unconjugated hyperbilirubinemia

    NARCIS (Netherlands)

    Hafkamp, Anja Maria

    2006-01-01

    De ziekte van Crigler-Najjar is een ernstige, weinig voorkomende vorm van geelzucht. Kenmerk van de ziekte is ophoping in het lichaam van ongeconjugeerd bilirubine (UCB), een afbraakproduct van rode bloedcellen. Ophoping van UCB kan leiden tot neurologische schade. De gebruikelijke behandeling van d

  11. Liver collagen in cirrhosis correlates with portal hypertension and liver dysfunction

    DEFF Research Database (Denmark)

    Nielsen, Kåre; Clemmesen, Jens Otto; Vassiliadis, Efstathios;

    2014-01-01

    livers. In 20 of the livers, CPA was measured in more than one tissue sample. CPA showed significant correlations with HVPG and with various surrogate markers of hepatic dysfunction including albumin, bilirubin, INR, MELD score and Child-Pugh score. CPA reliably discriminated HVPG ≥10 mmHg, termed...

  12. Impaired CD163-mediated hemoglobin-scavenging and severe toxic symptoms in patients treated with gemtuzumab ozogamicin

    DEFF Research Database (Denmark)

    Maniecki, M.B.; Hasle, H.; Friis-Hansen, L.;

    2008-01-01

    , and low bilirubin after septicemia-induced intravascular hemolysis indicated abrogated clearance of haptoglobin-hemoglobin complexes. This was further supported by low levels of plasma soluble CD163 and a concordant low number of CD163-expressing monocytes. We show that CD163 positive monocytes...

  13. Quantitative and localized spectroscopy for non-invasive bilirubinometry in neonates

    NARCIS (Netherlands)

    N. Bosschaart

    2012-01-01

    Couveusekinderen lopen een verhoogd risico op geelzucht, wat kan leiden tot hersenschade. Kinderen met geelzucht krijgen meerdere hielprikken per dag om de bilirubinewaarde in het bloed te bepalen. Bilirubine is het afbraakproduct van hemoglobine, dat kan zorgen voor een gelige huidskleur. Een mogel

  14. N-acetyl cysteine therapy in acute viral hepatitis

    Institute of Scientific and Technical Information of China (English)

    Huseyin Gunduz; Oguz Karabay; Ali Tamer; Resat Ozaras; Ali Mert; Omer Fehmi Tabak

    2003-01-01

    AIM: To investigate the effect of N-acetyl cysteine (NAC)on acute viral hepatitis (AVH).METHODS: We administered 200 mg oral NAC three times daily (600 mg/day) to the study group and placebo capsules to the control group. All patients were hospitalized and diagnosed as AVH. Blood total and direct bilirubin, ALT, AST,alkaline phosphatese, albumin and globulin levels of each patient were measured twice weekly until total bilirubin level dropped under 2 mg/dl, ALT level under 100 U/L, follow up was continued and then the patients were discharged.RESULTS: A total of 41(13 female and 28 male) AVH patients were included in our study. The period for normalization of ALT and total bilirubin in the study group was 19.7±6.9 days and 13.7±8.5 days respectively. In the control group it was 20.4±6.5 days and 16.9±7.8 days respectively (P>0.05).CONCLUSION: NAC administration effected neither the time necessary for normalization of ALT and total bilirubin values nor duration of hospitalization, so we could not suggest NAC for the treatment of icteric AVH cases. However, our results have shown that this drug is not harmful to patients with AVH.

  15. Creation of a Fistula Between the Hepatic Duct and the Gastric Lumen by way of Percutaneous Transhepatic Cholangiography: A Case Report

    DEFF Research Database (Denmark)

    Lauridsen, Mette Cathrine; Mortensen, Frank Viborg; Nielsen, Dennis Tønner;

    2012-01-01

    bilirubin and liver dysfunction. After successful percutaneous stenting and placement of an internal-external drainage tube from the biliary tree to the gastric ventricle, ascites and cholascos resolved completely and the patient was then referred for chemotherapy. The internal-external drainage tube...

  16. Prognostic factors in patients with advanced cholangiocarcinoma:Role of surgery,chemotherapy and body mass index

    Institute of Scientific and Technical Information of China (English)

    Mirna H Farhat; Ali I Shamseddine; Ayman N Tawil; Ghina Berjawi; Charif Sidani; Wael Shamseddeen; Kassem A Barada

    2008-01-01

    AIM:To study the factors that may affect survival of cholangiocarcinoma in Lebanon.METHODS:A retrospective review of the medical records of 55 patients diagnosed with cholangiocarcinoma at the American University of Beirut between 1990 and 2005 was conducted.Univariate and multivariate analyses were performed to determine the impact of surgery,chemotherapy,body mass index,bilirubin level and other factors on survival.RESULTS:The median survival of all patients was 8.57 mo (0.03-105.2).Univariate analysis showed that low bilirubin level (<10 mg/dL),radical surgery and chemotherapy administration were significantly associated with better survival (P = 0.012,0.038 and 0.038,respectively).In subgroup analysis on patients who had no surgery,chemotherapy administration prolonged median survival significantly (17.0 mo vs 3.5 too,P = 0.001).Multivariate analysis identified only low bilirubin level < 10 mg/dL and chemotherapy administration as independent predictors associated with better survival (P < 0.05).CONCLUSION:Our data show that palliative and postoperative chemotherapy as well as a bilirubin level < 10 mg/dL are independent predictors of a significant increase in survival in patients with cholangiocarcinoma.

  17. Disease: H00208 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available H00208 Hyperbilirubinemia; Crigler-Najjar syndrome, type I (CN1); Crigler-Najjar sy...dromes result in unconjugated hyperbilirubinemia caused by deficiency of bilirubin-UDP-glucuronosyltransfera...ronic acid. Gilbert disease is a benign familial disorder characterized by low-grade chronic hyperbilirubine

  18. Gemtuzumab ozogamicin as postconsolidation therapy does not prevent relapse in children with AML

    DEFF Research Database (Denmark)

    Hasle, Henrik; Abrahamsson, Jonas; Forestier, Erik;

    2012-01-01

    weeks. We randomized 120 patients; 59 to receive GO. Survival was analyzed on an intention-to-treat basis. The median follow-up for patients who were alive was 4.2 years. Children who received GO showed modest elevation of transaminase and bilirubin without signs of veno-occlusive disease. Severe...

  19. Assessment of resin perfusion in hepatic failure in vitro and in vivo

    Institute of Scientific and Technical Information of China (English)

    Ying-Jie Wang; Ze-Wen Wang; Bing-Wei Luo; Hong-Ling Liu; Hong-Wei Wen

    2004-01-01

    AIM: To observe the adsorbent effect of resin on endotoxin,cytokine, bilirubin in plasma of patients with hepatic failure and to determine the resin perfusion as an artificial liver support system in the treatment of hepatic failure.METHODS: One thousand milliliters of discarded plasma was collected from each of 6 severe hepatitis patients treated with plasma exchange. The plasma was passed through a resin perfusion equipment for 1-2 h via extracorporeal circulation, and then absorbent indicators of transaminase,bilirubin, blood ammonia, endotoxin and cytokines were examined. In the meantime, study of in vivo resin plasma perfusion was performed on 7 severe hepatitis patients to compare the changes of endotoxin and cytokines in blood before and after perfusion.RESULTS: The levels of total bilirubin, endotoxin, interleukin 1β and TNF-α in plasma were significantly decreased after in vitro resin plasma perfusion. The levels of interleukin 1β,TNF-α and endotoxin in blood were also evidently declined after in vivo resin plasma perfusion. Nevertheless, no obvious changes in IL-6, creatinine (Cr) and urea nitrogen (UN), blood ammonia and electrolytes were found bothin vitroandin vivo.CONCLUSION: Bilirubin, endotoxin and cytokines in plasma of patients with hepatic failure can be effectively adsorbed by resinin vitro. Most cytokines and endotoxin in plasma can also be effectively removed by resinin vivo. It demonstrates that resin perfusion may have good treatment efficacy on hepatic failure and can be expected to slow down the progression of hepatic failure.

  20. [The general practitioner and abnormal liver function tests].

    Science.gov (United States)

    Hallez, R

    1997-09-01

    In case of abnormal liver function tests, it's necessary to distinguish different situations, starting from this first data. We will successively consider: the high and moderate acute increases of aminotransferase, the chronic increases of aminotransferase, the isolated cholestase picture and the isolated increases of gamma GT or of bilirubine. We will finish with a partial survey about drug-induced liver diseases.

  1. The Haptoglobin-CD163-Heme Oxygenase-1 Pathway for Hemoglobin Scavenging

    DEFF Research Database (Denmark)

    Thomsen, Jens Haugbølle; Etzerodt, Anders; Svendsen, Pia;

    2013-01-01

    inflammation. The heme metabolites including bilirubin converted from biliverdin have overall an anti-inflammatory effect and thus reinforce the anti-inflammatory efficacy of the Hp-CD163-HO-1 pathway. Future studies of animal models of inflammation should further define the importance of the pathway...

  2. Bereiding en certificatie van primaire bilirubinestandaarden

    NARCIS (Netherlands)

    Wikkeling RH; Dreumel HJ van; Phielix-Strubbe CJ; Koedam JC

    1988-01-01

    Dit rapport beschrijft de bereiding en de certificatie van vijf partijen gevriesdroogde bilirubinestandaarden. De partijen bestonden uit nauwkeurig afgewogen hoeveelheden bilirubine, opgelost in humaan serumalbumine oplossingen en hadden een concentratie van resp. 0, 25, 75, 100 en 300 mumol/l (

  3. Novel treatment strategies for unconjugated hyperbilirubinemia

    NARCIS (Netherlands)

    Cuperus, Frans Jan Christiaan

    2011-01-01

    Ongeconjugeerde hyperbilirubinemie (de ophoping van bilirubine in het bloed) komt vooral voor bij mensen met de ziekte van Crigler-Najjar en bij sommige pasgeborenen. De standaardbehandeling voor ongeconjugeerde hyperbilirubinemie bestaat uit fototherapie; de bestraling van de huid met blauw licht.

  4. Gallbladder bile composition in patients with Crohn's disease

    Institute of Scientific and Technical Information of China (English)

    Annika Lapidus; Jan-Erik (A)kerlund; Curt Einarsson

    2006-01-01

    AIM: To further elucidate the pathogenesis and mechanisms of the high risk of gallstone formation in Crohn's disease.METHODS: Gallbladder bile was obtained from patients with Crohn's disease who were admitted for elective surgery (17 with ileallileocolonic disease and 7 with Crohn's colitis). Fourteen gallstone patients served as controls. Duodenal bile was obtained from ten healthy subjects before and after the treatment with ursodeoxycholic acid. Bile was analyzed for biliary lipids,bile acids, bilirubin, crystals, and crystal detection time (CDT). Cholesterol saturation index was calculated.RESULTS: The biliary concentration of bilirubin was about 50% higher in patients with Crohn's disease than in patients with cholesterol gallstones. Ten of the patients with Crohn's disease involving ileum and three of those with Crohn's colitis had cholesterol saturated bile. Four patients with ileal disease and one of those with colonic disease displayed cholesterol crystals in their bile. About 1/3 of the patients with Crohn's disease had a short CDT. Treatment of healthy subjects with ursodeoxycholic acid did not increase the concentration of bilirubin in duodenal bile. Several patients with Crohn's disease,with or without ileal resection/disease had gallbladder bile supersaturated with cholesterol and short CDT and contained cholesterol crystals. The biliary concentration of bilirubin was also increased in patients with Crohn's colitis probably not due to bile acid malabsorption.CONCLUSION: Several factors may be of importance for the high risk of developing gallstones of both cholesterol and pigment types in patients with Crohn's disease.

  5. Clinical study of percutaneous transhepatic balloon dilation: a novel procedure for common bileduct stone

    Institute of Scientific and Technical Information of China (English)

    李玉亮

    2014-01-01

    Objective To investigate the safety and efficacy of percutaneous transhepatic balloon dilation for the removal of common bile duct stone.Methods Sixty-eight cases with common bile duct stone treated with percutaneous transhepatic balloon dilation in our department from July2008 to April 20l1 were analyzed retrospectively.Record CA19-9,total bilirubin,

  6. Conformational changes in human serum albumin studied by fluorescence and absorption spectroscopy. Distance measurements as a function of pH and fatty acids

    DEFF Research Database (Denmark)

    Honoré, B; Pedersen, A O

    1989-01-01

    pH- and fatty acid-induced conformational changes in human serum albumin were investigated by fluorescence-energy transfer, determining the distance between Trp-214 and bound bilirubin at 25 degrees C. This distance changes significantly with the pH, being 2.52 +/- 0.01 nm at pH 6, 2.31 +/- 0.04 nm...

  7. Updating prognosis in primary biliary cirrhosis using a time-dependent Cox regression model. PBC1 and PBC2 trial groups

    DEFF Research Database (Denmark)

    Christensen, E; Altman, D G; Neuberger, J;

    1993-01-01

    patients followed for up to 6 years. RESULTS: In the obtained model the following time-dependent variables independently indicated a poor prognosis: high bilirubin, low albumin, ascites, gastrointestinal bleeding, and old age. When including histological variables, cirrhosis, central cholestasis, and low...

  8. Safety and pharmacology of paclitaxel in patients with impaired liver function : a population pharmacokinetic-pharmacodynamic study

    NARCIS (Netherlands)

    Joerger, M.; Huitema, A. D. R.; Huizing, M. T.; Willemse, P. H. B.; Rosing, H.; Schellens, J. H. M.; Beijnen, J. H.; Vermorken, J. B.

    2007-01-01

    Aims To assess quantitatively the safety and pharmacology of paclitaxel in patients with moderate to severe hepatic impairment. Methods Solid tumour patients were enrolled into five liver function cohorts as defined by liver transaminase and total bilirubin concentrations. Paclitaxel was administere

  9. Down-regulation of OATP1B proteins correlates with hyperbilirubinemia in advanced cholestasis

    NARCIS (Netherlands)

    Sticova, E.; Lodererova, A.; Steeg, E. van de; Frankova, S.; Kollar, M.; Lanska, V.; Kotalova, R.; Dedic, T.; Schinkel, A.H.; Jirsa, M.

    2015-01-01

    Aim: Organic anion-transporting polypeptides OATP1B1 and OATP1B3 are sinusoidal membrane transporters mediating liver uptake of a wide range of substrates including conjugated and unconjugated bilirubin, xenobiotics and drugs. Absence of OATP1Bs in the liver causes Rotor syndrome. Our aim was to cor

  10. Neonates and Infants At Risk for Hearing and Speech-Language Disorders.

    Science.gov (United States)

    Clark, David A.

    1989-01-01

    High-risk infants may exhibit hearing impairments which can subsequently impede speech/language development. Discussed are prenatal risk factors, including environmental toxins and infections; and perinatal factors such as prematurity, asphyxia, intracranial hemorrhage, bilirubin, ototoxic drugs, and environmental noise. A table summarizes factors…

  11. Common Diagnoses in the NICU

    Science.gov (United States)

    ... a surgeon to place a tube in the brain (called a shunt) that drains the fluid from the brain. Sometimes the fluid is drained to the scalp ... treated? Extremely high levels of bilirubin can cause brain damage, so infants ... abdomen to allow the infected fluid to drain. How long will my baby be in the ...

  12. REVERSIBILITY OF CHOLESTATIC CHANGES FOLLOWING EXPERIMENTAL COMMON BILE-DUCT OBSTRUCTION - FACT OR FANTASY

    NARCIS (Netherlands)

    ARONSON, DC; CHAMULEAU, RAFM; FREDERIKS, WM; GOOSZEN, HG; HEIJMANS, HSA; JAMES, J

    1993-01-01

    In 36 male Wistar rats extrahepatic cholestasis was induced by ligation and transsection of the common bile duct. After 1, 2 and 3 weeks of cholestasis the bile flow was restored by means of a Roux-en-Y choledochojejunostomy. Plasma levels of bilirubin, alkaline phosphatase, GOT and clotting factor

  13. Carbon monoxide production in ventilated premature infants weighing less than 1500 g.

    OpenAIRE

    Fischer, A F; Ochikubo, C G; Vreman, H. J.; Stevenson, D. K.

    1987-01-01

    Mean pulmonary excretion rate of carbon monoxide in 13 premature babies on ventilators was significantly higher (p less than 0.001) than that of 19 healthy infants born at full term. This correlated with carboxyhaemoglobin concentrations in blood, indicating that the premature infants on ventilators produced abnormally large amounts of bilirubin.

  14. Clinical effect by exchange transfusion in the treatment of hemolytic disease of the newborn%换血方法治疗新生儿溶血病的临床疗效

    Institute of Scientific and Technical Information of China (English)

    赵鲁强

    2016-01-01

    目的:探讨换血方法治疗新生儿溶血病(HDN)的临床效果。方法120例HDN患儿进行换血治疗,分别检测患儿在换血前后的血清总胆红素、直接胆红素、间接胆红素及Na+、Cl-、Ca2+、K+的水平变化。结果120例患儿换血后血清总胆红素、直接胆红素和间接胆红素水平与换血前比较均明显降低,差异均有统计学意义(P<0.05)。120例患儿与换血前比较,换血后Na+、Cl-、Ca2+水平均显著升高, K+显著下降,差异均有统计学意义(P<0.05)。结论换血方法可以降低HDN患儿胆红素水平,纠正电解质紊乱,临床值得推广应用。%ObjectiveTo investigate clinical effect by exchange transfusion in the treatment of hemolytic disease of the newborn (HDN).MethodsA total of 120 infants with HDN received exchange transfusion. Their changes of serum total bilirubin, direct bilirubin, indirect bilirubin, level changes of Na+, Cl-, Ca2+, and K+ were all detected before and after exchange transfusion.ResultsThe differences of serum total bilirubin, direct bilirubin, and indirect bilirubin, which were abviously decreased, before and after exchange transfusion had statistical significance in 120 cases (P<0.05). Comparing with those before exchange transfusion, all the 120 cases had much higher Na+, Cl-, Ca2+ levels after exchange transfusion, and K+ level was obviously reduced after exchange transfusion, and the differences had statistical significance (P<0.05).ConclusionExchange transfusion can decrease bilirubin level and correct electrolyte disturbance in HDN infants. This method is worth clinical promotion and application.

  15. A comparative study of gallstones from children and adults using FTIR spectroscopy and fluorescence microscopy

    Directory of Open Access Journals (Sweden)

    Marks Robert S

    2002-02-01

    Full Text Available Abstract Background Cholelithiasis is the gallstone disease (GSD where stones are formed in the gallbladder. The main function of the gallbladder is to concentrate bile by the absorption of water and sodium. GSD has high prevalence among elderly adults. There are three major types of gallstones found in patients, White, Black and Brown. The major chemical component of white stones is cholesterol. Black and brown stones contain different proportions of cholesterol and bilirubin. The pathogenesis of gallstones is not clearly understood. Analysis of the chemical composition of gallstones using various spectroscopic techniques offers clues to the pathogenesis of gallstones. Recent years has seen an increasing trend in the number of cases involving children. The focus of this study is on the analysis of the chemical composition of gallstones from child and adult patients using spectroscopic methods. Methods In this report, we present FTIR spectroscopic studies and fluorescence microscopic analysis of gallstones obtained from 67 adult and 21 child patients. The gallstones were removed during surgical operations at Soroka University Medical Center. Results Our results show that black stones from adults and children are rich in bilirubin. Brown stones are composed of varying amounts of bilirubin and cholesterol. Green stones removed from an adult, which is rare, was found to be composed mainly of cholesterol. Our results also indicated that cholesterol and bilirubin could be the risk factors for gallstone formation in adults and children respectively. Fluorescence micrographs showed that the Ca-bilirubinate was present in all stones in different quantities and however, Cu-bilirubinate was present only in the mixed and black stones. Conclusions Analysis based on FTIR suggest that the composition of black and brown stones from both children and adults are similar. Various layers of the brown stone from adults differ by having varying quantities of

  16. Prophylactic effect of zinc sulphate on hyperbilirubinemia in premature very low birth weight neonates: a randomized clinical trial

    Directory of Open Access Journals (Sweden)

    Ashraf Mohammadzadeh

    2015-02-01

    Full Text Available Introduction: One of the common problems in neonatal period is jaundice that occurs in the first week of birth in 60% of term and 80% of preterm neonates. In preterm newborn hyperbilirubinaemia is higher, persistent, longer, and more likely to be associated with neurological injury than term neonates. The purpose of this study was to determine Prophylactic effect of zinc sulphate on hyperbilirubinemia in premature very low birth weight neonates. Method and Material: Sixty Newborns who admitted in our NICU which had inclusion criteria were eligible in this trial. Included neonates were randomly placed in two groups (case and control and before intervention the total serum bilirubin (TSB was measured at second day. The participant received either 20 mg of zinc sulfate or placebo through NG-tube divided in two doses till day seven of age. Then total and indirect bilirubin was measured at 3ed, 5th and 7th day of life. If any of newborns in duration of hospitalization develop clinical jaundice, after assessment of bilirubin, need for phototherapy was evaluated based on phototherapy and exchange schedule as described by the American Academy of Pediatrics guidelines. The termination point of phototherapy was defined as a bilirubin level less than 50 percent of starting point. After gathering Data, they were analyzed using SPSS software (version 11.5 and T-test, Chi-square and repeated measurement tests. Results: Seventy eight patients enrolled in this trial that 18 cases were excluded and the remaining cases divided into two equal groups (N=30 in each group. Demographic condition was similar in two groups. There were no different between two groups in decreasing total serum bilirubin and duration of phototherapy. Conclusion: This study showed that zinc sulfate has no preventing effective in hyperbilirubinemia in preterm very low birth weight neonates. It has also no effect on duration of phototherapy.

  17. The Effect of Clofibrate on Hyperbilirubinemia of Term Neonates

    Directory of Open Access Journals (Sweden)

    Parviz Ayazi

    2012-01-01

    Full Text Available Clofibrate is a glucuronosyl transferase inducer that has been proposed to increase the elimination of bilirubin in neonates with hyperbilirubinemia. This study was conducted to determine the therapeutic effect of clofibrate in term neonates with non-hemolytic jaundice. This study was conducted on 52 newborns with pathologic unconjugated jaundice in Qazvin children hospital. Newborns divided randomly in two groups. Case group treated with clofibrate and intensive phototherapy, while control group treated only with intensive phototherapy. Serum bilirubin level was measured before and 6, 12, 24 and 48 hours after treatment. Results were compared and analyzed. The mean serum level of bilirubin before treatment in the case and control groups were 20.78±2.38 and 20.52 ±2.44 mg/dl, respectively (P=0.69. The mean serum level of bilirubin in 6, 12, 24 and 48 hours after treatment in the case group were 18.20±2.20, 14.70±2.06, 10.72±2.40 and 8.90±0.83 mg/dl , respectively. These values in control group were 18.26±2.42, 15.36±2.59, 12.29±2.28 and 10.23±1.50 mg/dl, respectively. There was significant difference between two groups regarding mean serum level of bilirubin 24 hours (P=0.019 and 48 hours after treatment (P=0.005. In conclusion, clofibrate was effective in reducing neonatal jaundice and its effect appeared 24 hours after treatment.

  18. Hepatoprotective activity of the methanolic extract of Fagonia indica Burm in carbon tetra chloride induced hepatotoxicity in albino rats

    Institute of Scientific and Technical Information of China (English)

    I.M. Bagban; S.P. Roy; A.Chaudhary; S. K. Das; K.J. Gohil; K.K. Bhandari

    2012-01-01

    Objective: To investigate hepatoprotective activity of the methanolic extract of Fagonia indica Burm. on CCl4 induced hepatotoxicity in albino rats. Methods: Animals in Group 1 served as vehicle control, Group 2 served as hepatotoxin (CCl4 2ml/kg, s.c) treated group, Group 3 served as standard (Silymarin 50mg/kg, p.o.) treated group. Group4 and 5 served as methanolic extract of Fagonia indica (MEFI) in different doses (200 mg/kg and 400 mg/kg b.w., p.o).The degree of protection was determined by measuring levels of biochemical marker like SGOT, SGPT, ALP, Bilirubin (Total & Direct) and Cholesterol. The histopathological studies also show the hepatic protection of the test extracts. Results: The levels of the biochemical parameters such as SGPT, SGOT, ALP, Total bilirubin, Direct bilirubin and Cholesterol were significantly increased in CCl4 treated rats when compared with the normal group (P<0.05), but the MEFI (400 mg/kg, bw) treated rats showed maximum reduction of SGOT (114.83±1.51), SGPT (164.33±1.25), ALP (154.83±1.53), Total bilirubin (1.55±0.01), Direct bilirubin (0.65±0.009) and Cholesterol (193.00±1.06) in a significant manner. Histopathological studies also reveal the hepatoprotection property of MEFI in a dose dependent manner. Conclusions: These results suggest that MEFI in different doses showed significant hepatoprotective activity against CCl4 induced hepatotoxicity and this might be due to the presence of flavonoids and tannins. Further research is sought to explore the exact mechanism of action and phytoconstituents responsible for the pharmacological response.

  19. Lifelong elimination of hyperbilirubinemia in the Gunn rat with a single injection of helper-dependent adenoviral vector.

    Science.gov (United States)

    Toietta, Gabriele; Mane, Viraj P; Norona, Wilma S; Finegold, Milton J; Ng, Philip; McDonagh, Antony F; Beaudet, Arthur L; Lee, Brendan

    2005-03-15

    Crigler-Najjar syndrome is a recessively inherited disorder characterized by severe unconjugated hyperbilirubinemia caused by a deficiency of uridine diphospho-glucuronosyl transferase 1A1. Current therapy relies on phototherapy to prevent kernicterus, but liver transplantation presently is the only permanent cure. Gene therapy is a potential alternative, and recent work has shown that helper-dependent adenoviral (HD-Ad) vectors, devoid of all viral coding sequences, induce prolonged transgene expression and exhibit significantly less chronic toxicity than early-generation Ad vectors. We used a HD-Ad vector to achieve liver-restricted expression of human uridine diphospho-glucuronosyl transferase 1A1 in the Gunn rat, a model of the human disorder. Total plasma bilirubin levels were reduced from >5.0 mg/dl to 2 yr after a single i.v. administration of vector expressing the therapeutic transgene at a dose of 3 x 10(12) viral particles per kg. HPLC analysis of bile from treated rats showed the presence of bilirubin glucuronides at normal WT levels >2 yr after one injection of vector, and i.v. injection of bilirubins IIIalpha and XIIIalpha in the same animals revealed excess bilirubin-conjugating capacity. There was no significant elevation of liver enzymes (alanine aminotransferase) and only transient, moderate thrombocytopenia after injection of the vector. A clinically significant reduction in serum bilirubin was observed with a dose as low as 6 x 10(11) viral particles per kg. We conclude that complete, long-term correction of hyperbilirubinemia in the Gunn rat model of Crigler-Najjar syndrome can be achieved with one injection of HD-Ad vector and negligible chronic toxicity. PMID:15753292

  20. Progress in the study on the composition and formation mechanism of gallstone

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Our serial studies from 1970s on chemical composition, structure determination and formation mechanism of gallstones were reviewed. The chemical component investigation of brown-pigment gallstone demonstrated that it consists of macromolecules such as proteins, glycoproteins, polysaccharides, bilirubin polymers and pigment polymers, and biomolecules such as cholesterol, bile salts, calcium salts of carbonate, phosphate, fatty acids and bilirubinate as well as various metal ions. The binding of metal ions with bile salts and bilirubin plays important roles in gallstone formation, i.e., calcium bilirubinate complex is the major constitute of brown-pigment gallstones, and copper bilirubinate complex is critical in the black color appearance of black-pigment gallstone. The cross section of many gallstones exhibits a concentric ring structure composed of various small particles with a fractal character. This is nonlinear phenomenon in gallstone formation. A typical model system of metal ions-deoxycholate (or cholate)-gel was chosen to mimic an in vitro pattern formation system. The experimental results suggested that a nonlinear scientific concept should be considered in understanding gallstone formation. Minor changes in the chemical composition and/or the microenvironment may lead to very different precipitate patterns with a variety of shapes, colors, appearances, and structures. A new model was suggested that periodical templets of periodical and fractal patterns were formed in the initial stage, then the spatio-temporal patterns grew gradually on it. Furthermore, the interaction between divalent metal ions and bile salts in vitro was investigated, and the results indicated that non-stoichiometric M(DC)2-NaDC mixed complexes with mixed micelles structure can be formed in physiological condition.

  1. Antioxidant status in neonatal jaundice before and after phototherapy

    Directory of Open Access Journals (Sweden)

    S Ayyappan

    2015-01-01

    Full Text Available Background: Neonatal jaundice refers to yellow coloration of the skin and the sclera (whites of the eyes of newborn babies that result from the accumulation of bilirubin in the skin and mucous membranes. Because bilirubin is potentially toxic to the central nervous system. Genetic disorders of bilirubin conjugation, particularly the common Gilbert′s syndrome, can also contribute to neonatal hyperbilirubinemia. Objective: The aim of this study was to evaluate the lipid per-oxidation and antioxidant enzyme activities in patients with neonatal jaundice before and after phototherapy. Materials and Methods: The study includes 50 neonatal jaundice patients with average age 2-15 days. All patients of neonatal jaundice receiving phototherapy except feeding, cleaning. Subjects selected were from the patients attending Pediatrics Department. Plasma malondialdehyde (MDA, erythrocyte glutathione peroxidase (GPX, superoxide dismutase and catalase (CAT to monitor the bilirubin level. Results: The results show increased levels of bilirubin compared with controls (P < 0.001 shows the level of plasma MDA in control, before and after phototherapy. Represents the level of GPX was significantly increased in after the phototherapy group when compared with before phototherapy and control SPSS soft ware: (P < 0.001. Shows the reduced glutathione (GSH level in plasma was significantly decreased in the after phototherapy group when compared with before phototherapy and control (P < 0.001. And finally with ascorbic acid and CAT. Conclusion: It is evident from the study that increased oxidative stress in neonatal jaundice babies leads to decrease in the levels of antioxidants like GSH and ascorbic acid and disturb their metabolism, that weaken their ability to fight the growing stress. Intense oxidative stress and decreased antioxidants may contribute to neural cell death and alter the erythrocytomembrane structure processing in neonatal jaundice.

  2. Characteristics of brainstem auditory evoked potential of neonates with mild or moderate hyperbilirubinemia

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    BACKGROUND: Brainstem auditory evoked potential (BAEP) has been widely used to evaluate the functional integrity and development of injured auditory system and brain, especially to objectively evaluate the function of auditory system and brain stem of very young babies, such as neonates and sick babies.OBJECTIVE: To observe the changes of BAEP of neonates with hyperbilirubinemia, and to investigate the relationship of bilirubin concentration and BAEP.DESIGN: An observation experiment.SETTING: Department of Pediatrics, the 309 Clinical Division, General Hospital of Chinese PLA.PARTICIPANTS: Fifty-eight neonates with mild or moderate hyperbilirubinemia exhibiting jaundice within 24 hours after born, who received the treatment in the Department of Pediatrics, the 309 Clinical Division, General Hospital of Chinese PLA between January 2004 and May 2007, were recruited in this study. The involved neonates, 31 boys and 27 girls, had gestational age of 37 to 46 weeks. They had no history of birth asphyxia, and were scored 8 to 10 points when born. Written informed consents of examination and treatment were obtained from the guardians of the neonates. This study was approved by the Hospital Ethics Committee. According to serum total bilirubin value, the neonates were assigned into 3 groups: low-concentration bilirubin group (n =16), moderate-concentration bilirubin group (n =27) and high-concentration bilirubin group (n =15). According to mean daily bilirubin increase, the subjects were sub-assigned into bilirubin rapid increase group (n =39) and bilirubin slow increase group (n =19).METHODS: After admission, all the neonates received drug treatment. Meanwhile, their 116 ears were examined with a myoelectricity evoked potential equipment (KEYPOINT) in latency, wave duration,amplitude and wave shape differentiation of each wave of BAEP. BAEP abnormal type was observed and abnormal rate of BAEP was calculated.MAIN OUTCOME MEASURES: ① Abnormal rate and abnormal type of BAEP

  3. Relation Between Interleukin-1-β And Interleukin-8 Levels In Breast Milk (Colostrum) And Neonatal Physiological Jaundice

    International Nuclear Information System (INIS)

    The immune system of neonates is influenced by maternal immunity during pregnancy and lactation. Breast-fed neonates have higher incidence of neonatal jaundice and higher level of total serum bilirubin than formula-fed infants. The aim of this study was to find a relationship between neonatal physiological jaundice and interleukin-1-beta (IL-1-β) and interleukin-8 (IL-8) in the colostrum of nursing mothers. Breast milk (colostrum) was collected from 45 nursing mothers of healthy full term neonates. The sharing mothers and their neonates were divided into two groups according to the presence of neonatal jaundice and the level of total serum bilirubin. All jaundiced neonates had total serum bilirubin level more than 12 mg/dl which appeared on the third postpartum day, all of them were breast-fed only. They were subjected to full history through clinical examination and laboratory investigations including determination of colostral levels of IL-1-β and IL-8, by ELISA, and determination of neonatal total serum bilirubin levels. This study revealed that mothers of neonates with physiological jaundice had higher concentrations of IL-1-β and IL-8 in their colostrums as compared with control group. Moreover, it displayed that total serum bilirubin level of jaundiced neonates was higher than its level in non-jaundiced neonates. There were significant correlations between IL- 1-β and IL-8 with mother's age in all groups, while there were inverse correlations between IL-1- , IL-8 and gestational age of non- jaundiced neonates. Additionally, there was significant correlation between IL-1-β and IL-8 in the colostrum of all mothers enrolled in this study. On the other hand, no correlation was determined between cytokines IL-1-β, IL-8 and total serum bilirubin in all neonates sharing in this study. This study clearly demonstrated that the levels of immunomodulating agents such as cytokines IL-1-β and IL-8 were elevated in the colostrum of mothers with jaundiced neonates

  4. Phototherapy in the newborn: what’s new?

    Directory of Open Access Journals (Sweden)

    Murat Yurdakök

    2015-10-01

    Full Text Available When exposed to light, bilirubin undergoes photoisomerization which are water-soluble and can be excreted in bile and urine. Photoisomerization starts as soon as the lights turned on, and risk of bilirubin encephalopathy is lower in infants who receive phototherapy even in the same serum bilirubin levels. Blue light is absorbed most readily if bilirubin is in a tube, but skin penetration and albumin binding shift of the most effective light to blue-green region. However, there is no consensus on the most effective wavelength for phototherapy. The light sources used in conventional phototherapy are fluorescent bulbs, halogen lamps or light-emitting diodes (LED with equally effective in reducing serum bilirubin levels. Fiberoptic devices are less effective. Despite higher irradiance in double or triple phototherapy, there is no superiority in clinical settings. Hyperthermia and skin rashes are higher when used super (high-intensity LED devices. Watery loose stools may cause dehydration in preterm infants. Riboflavin loss and lipid peroxidation are prevented with using dark tubing or covering the line with aluminum foil. The consequences of light penetration into deep brain in newborn infants because of open wide fontanel and thin skull is unknown. Non-ocular light exposure and suppressed melatonin secretion may affect autonomic and behavioral disturbances. Phototherapy-induced hypocalcemia may be prevented by covering the head. Phototherapy does not effect ductal patency or reopening, its effect on the incidence of retinopathy of prematurity have yielded conflicting results. Neonatal phototherapy increases the risk of asthma and allergic disorders in older age groups. Aggressive (low-threshold phototherapy increase mortality risk in small preterm infants less than 750 g at birth, which may be related to the reduced bilirubin with its antioxidant effects. In conclusion, phototherapy is not a treatment without side effects and overtreatment should

  5. Comparison of Two Phototherapy Methods (Prophylactic vs Therapeutic for Management of Hyperbilirubinemia in Very Low Birth Weight Newborns

    Directory of Open Access Journals (Sweden)

    Seyedeh-Sarah Nazem-Sadati

    2011-12-01

    Full Text Available Objective: Preterm and low birth weight (LBW infants are at greater risk of developing bilirubin-associated brain damage compared with term infants. Certainly, phototherapy, if used appropriately, is capable of controlling the bilirubin levels in LBW infants; but there is not a unique phototherapy treatment strategy in LBW infants. This study was designed to compare the prophylactic phototherapy and late treatment of jaundiced newborns weighing 1000-1500 grams.Methods: Sixty newborns with birth weight 1000-1500 g were studied. They were divided into two groups: the "Prophylactic" group, in which phototherapy started within six hours after birth and continued for at least 96 hours, and the "Treatment" group, which received phototherapy when indicated according to birth weight and suspended when bilirubin level fell below 50% of bilirubin level for blood exchange. Mean value of daily transcutaneous bilirubin (TCB, duration of phototherapy, the need for blood exchange, and the highest TCB value in both groups were analyzed."nFindings: In the prophylactic group, the highest daily mean rate of TCB was 7.71±1.84 mg/dl, which happened on the third day. In the treatment group, it was 8.74±1.72 mg/dl on the fourth day after birth. The TCB values in prophylactic group were significantly less than those of the treatment group only on the fourth and fifth days after birth (P<0.001. Although the median duration of phototherapy in the treatment group was shorter than that of the prophylactic group (137.60±57.39 vs 168.71±88.01 hours, respectively, this difference was not statistically significant. Only one neonate needed blood exchange in the treatment group."nConclusion: The prophylactic phototherapy treatment for babies weighing 1000-1500 g significantly decreases bilirubin levels on the fourth and fifth days after birth but the clinical course of hyperbilirubinemia does not alter in LBW infant, as indicated by the non-significant change in the duration

  6. AB161. High resolution melting analysis of buccal DNA revealed a significant association between UGT1A1 c.211G>A and neonatal hyperbilirubinemia development in Malay population

    Science.gov (United States)

    Cheung, Tian Pei; Van Rostenberghe, Hans; Ismail, Rosliza; Nawawi, Noor Namirah; Abdullah, Nurul Amierah; Ramli, Noraida; Ibrahim, Nor Rosidah; Hj Abd Majid, Noorizan; Mohd Yusoff, Narazah; Nishio, Hisahide; Yusoff, Surini

    2015-01-01

    Background Severe neonatal hyperbilirubinemia or neonatal jaundice (NNJ) characterised by an elevated total serum bilirubin (TSB) level may result in kernicterus or even death. Uridine diphosphate glucuronosyltransferase 1A1 (UGT1A1) is the key enzyme which conjugates bilirubin with glucuronic acid for the subsequent bilirubin excretion. Conversely, constitutive androstane receptor (CAR), encoded by nuclear receptor subfamily 1, group I, member 3 (NR1I3) gene, regulates bilirubin excretion by activating the components of the bilirubin clearance pathway. Thus, genetic variants in UGT1A1 and NR1I3 genes may modulate bilirubin excretion and lead to NNJ. This study aimed to determine the association between UGT1A1 and NR1I3 genetic variants and NNJ development in Malay population by genotyping the DNA isolated from buccal swabs. The accuracy and reliability of the genotyping results produced by buccal DNA was also compared with that of the whole blood DNA. Methods Buccal swabs were collected from 232 hyperbilirubinemia and 232 non-hyperbilirubinemia newborns admitted to and/or born in Hospital Universiti Sains Malaysia (HUSM). Hyperbilirubinemia subjects were those with TSB levels ≥250 µmol/L within the first week after birth while non-hyperbilirubinemia subjects were newborns without significant hyperbilirubinemia. The UGT1A1 (c.211G>A) and NR1I3 [MPJ6_1I3008 (G>A), IVS8+116T>G and 540A>G] variants were genotyped by using high resolution melting (HRM) analysis. Binary logistic regression was used to assess the association between variant genotypes and risk of NNJ. Whole blood samples were also collected from 60 subjects and genotyped to compare the HRM genotyping results with that of the buccal swabs. Results When compared with wild-type genotype, both heterozygous and homozygous variant genotypes of MPJ6_1I3008 (G>A), IVS8+116T>G and 540A>G were not significantly associated with NNJ. However, the heterozygous genotype (GA) of c.211G>A was found to increase the

  7. Hemolysis test of emulsified isoflurane in vitro and in vivo%乳化异氟烷的体内和体外溶血性实验研究

    Institute of Scientific and Technical Information of China (English)

    饶艳; 王焱林; 张文胜; 杨小霖; 马汉祥; 杨经文; 杨宗斌; 刘爱杰; 刘进

    2011-01-01

    Objective Emulsified isoflurane (8% ,vol/vol) is a kind of lipid based formation for intravenous administration. The purpose of this study is to evaluate whether emulsified isoflurane induces hemolysis or not in vitro and in vivo. Methods In hemolysis test in vitro, a male rabbit was used to prepare 2% (vol/vol) erythrocyte suspensions for measuring degree of hemolysis of emulsified isoflurane at the doses from 12 to 0. 3 g/L. In hemolysis test in vivo,4 male Beagle dogs were intravenously adminstrated emulsified isoflurane 225.6 mg/kg in 3-5 min. 5 ml samples of venous blood were collected from each dog at 0 min (start of injection) ,5 min,30 min,1 h,2 h,4 h,8 h,1 d,2 d,3 d and 6 d after the adminstration of emulsified isoflurance for measuring erythrocyte morphology,reticulocyte counts, the concentrations of free hemoglobin,haptoglobin,and bilirubin. At the same time, urinary blood, urinary bilirubin and urobilinogen were also measured before and after adminstration. Results In vitro experiment,emulsified isoflurane led to hemolysis at the concentrations from 12 to 1.2 g/L. However,no hemolysis was found at the concentrations from 0. 6 to 0. 3 g/L. In vivo experiment,with the exception of a slight reduction in indirect bilirubin and a mild increase in direct bilirubin at 5 min (P < 0.05 ) , others such as total bilirubin, retculocyte counts, haptoglobin, free hemoglobin,urinary bilirubin,urinary blood, and urinary urobinogen were not significantly different compared with their corresponding values before injection. There was also no significant difference in erythrocyte fragmentations at 0 min,5 min,30 min,1 h,2 h,4 h,8 h,1 d,2 d,3 d and 6 d after injection of emusified isoflurane, and none of macrocytes and nucleated red cells was noted on all blood films. Conclusions Emulsified isoflurane at concentrations recommended for clinical trials did not cause hemolysis in vitro and in vivo.

  8. Effectiveness of ultrasound, computed tomography, hepatobiliary scintigraphy and nuclear magnetic resonance in diseases of the gallbladder and bile ducts

    Energy Technology Data Exchange (ETDEWEB)

    Fiegler, W.; Schoerner, W.; Felix, R.

    1984-09-01

    The effectiveness of ultrasound, computed tomography, hepatobiliary scintigraphy and nuclear magnetic resonance in diseases of the biliary tract is described. Ultrasound should be the first examination in clinical suspicion of cholelithiasis and has a higher accuracy than oral cholecystography. Computed tomography is very expensive and should be carried out in suspected gallbladder carcinoma, cholecystitis with abscess formation, tumour in the porta hepatis and pancreatic head and in sonographically unclear cases. Nuclear magnetic resonance can determine the ability of the gallbladder to concentrate bile. Ultrasound can distinguish with high accuracy between obstructive and inflammatory jaundice. In clinical suspicion of bile duct lesions an infusion cholangiogram must be carried out, if bilirubin is lower than 5 mg%; if bilirubin is higher, an ERC or PTC should be performed. If in biliary obstruction a suspicion of tumour in porta hepatis or head of the pancreas is present, computed tomography should be effected.

  9. PROTECTIVE ABILITY OF MOMORDICA CHARANTIA L AGAINST CCL4 INDUCED HEPATIC DAMAGE IN RATS

    Directory of Open Access Journals (Sweden)

    Pingale Shirish S

    2010-12-01

    Full Text Available The aim of this study is to evaluate the efficacy of Momordica charantia on the experimental hepatotoxicity induced by carbon tetrachloride (CCl4. Carbon tetrachloride was administered once and simultaneously suspension of dry fruit powder was prepared in aqueous medium and was daily administered at a dose level of 1mg/kg body weight for 4 days. Silymarin was used as a standard drug for this study. Administration of carbon tetrachloride showed significant changes in the levels of serum aminotransferase, alkaline phosphatase, bilirubin and total proteins levels, however necrosis, collagen deposition and altered hepatic architecture were also observed. Markers of liver injury, altered aminotransferase, alkaline phosphatase, bilirubin etc. and morphological changes such as necrosis and collagen deposition were significantly decreased in the rats treated with Momordica charantia fruit powder. These results suggest that the Momordica charantia showed hepatoprotective effect on carbon tetrachloride induced hepatic damage and may be a potential clinical application for treatment of liver diseases.

  10. [Evolution and prognosis in patients with liver cirrhosis. II. A multifactorial analysis using a stepped regression mathematical model].

    Science.gov (United States)

    Chernev, K; Isa, S; Bakalov, V; Aleksiev, Ch

    1990-01-01

    The multivariant approach offers best possibilities for assessment of liver function. The role of the different clinical, clinico-laboratory and combined clinical and clinicochemical indices in the prognosis of liver cirrhosis was studied in patient in ambulatory conditions. A step regressive mathematical model with the help of the program 2R of the statistical package BMDP was used. The regression of the clinical indices by 5 steps of the mathematical model showed that of greatest importance for the survival are the following indices: ascites, months since its onset, collaterals, anorexia and vascular nevi. By 4 steps of the regressive model of the clinico-chemical indices the following indices were chosen: prothrombin time, albumin, total bilirubin, cholesterol and alkaline phosphatase. The regression of the combined clinical and clinico-chemical indices pointed out as basic factors 3 clinical indices (ascites, months since its onset, collaterals) and 3 clinico-chemical indices related to the disturbed liver function (prothrombin time, total bilirubin, albumin).

  11. Screening for Wilson disease in acute liver failure: a comparison of currently available diagnostic tests

    DEFF Research Database (Denmark)

    Korman, J.D.; Volenberg, I.; Balko, J.;

    2008-01-01

    yielded a sensitivity of 94%, specificity of 96%, and a likelihood ratio of 23 for diagnosing fulminant WD. In addition, an AST:ALT ratio >2.2 yielded a sensitivity of 94%, a specificity of 86%, and a likelihood ratio of 7 for diagnosing fulminant WD. Combining the tests provided a diagnostic sensitivity...... a diagnostic sensitivity of 21% and specificity of 84% while, by nephelometry, a sensitivity of 56% and specificity of 63%. Serum copper levels exceeded 200 microg/dL in all ALF-WD patients measured (13/16), but were also elevated in non-WD ALF. An alkaline phosphatase (AP) to total bilirubin (TB) ratio ... and specificity of 100%. CONCLUSION: Conventional WD testing utilizing serum ceruloplasmin and/or serum copper levels are less sensitive and specific in identifying patients with ALF-WD than other available tests. More readily available laboratory tests including alkaline phosphatase, bilirubin and serum...

  12. Acute acalculous cholecystitis (AAC in the pediatric population associated with Epstein–Barr Virus (EBV infection. Case report and review of the literature

    Directory of Open Access Journals (Sweden)

    Fuad Alkhoury

    2015-01-01

    PRESENTATION OF CASE: A 15-year-old female who came to the JDCH ER complaining of 3 days history of mild diffuse abdominal pain associated with two episodes of emesis. She also reports headache as well as a mild cough and low grade subjective fever. Blood test results showed mild leukocytosis with significant elevation in the lymphocytes (59%, High alkaline phosphatase (221 U/I, AST (191 U/I, ALT(221 U/I and bilirubin (Total 1.8 and direct 1.5. Abdominal US showed a contracted gallbladder with wall thickness and pericholecystic fluid. During hospital stay number 2–3 laboratory work up show a trending up in the bilirubin levels. MRCP was ordered and no abdnormalities were found. At this point Hospital stay number 3 EBV acute infection was suspected. Serum serological studies were subsequently diagnostic for this viral disease. Management was conservative and the patient was discharged asymptomatic on hospital day number six.

  13. Actinomyces naeslundii and Eikenella corrodens as rare causes of liver abscesses.

    Science.gov (United States)

    Jaqua, Nathan Thomas; Smith, Adam J; Shin, Terry T; Jahanmir, Jay

    2013-01-01

    A 48-year-old man with an unremarkable medical history was admitted with vague conditions of fever, chills, myalgias and malaise. Physical examination was remarkable for only scleral icterus. Laboratory evaluation revealed elevated aminotransferases, alkaline phosphatase and bilirubin. Imaging demonstrated two masses in the right lobe of his liver, which were ultimately drained and cultures demonstrated Actinomyces and Eikenella. He continued to have fever on broad-spectrum antibiotics until catheter drainage of the abscesses was performed. He was eventually discharged in improved condition on amoxicillin-clavulanate. His aminotransferases, alkaline phosphatase and bilirubin continued to improve and he remained afebrile and asymptomatic. A repeat CT 2 months after discharge demonstrated resolution of the abscesses. Actinomyces and Eikenella are rare causes of liver abscesses and treatment requires drainage and an extended course of antibiotics. The polymicrobial character typical of liver abscesses makes antibiotic therapy challenging when cultures reveal rare organisms such as Actinomyces and Eikenella. PMID:23867879

  14. Early onset of hypernatraemic dehydration and fever in exclusively breast-fed infants.

    Science.gov (United States)

    Ng, P C; Chan, H B; Fok, T F; Lee, C H; Chan, K M; Wong, W; Cheung, K L

    1999-12-01

    Five cases of moderately severe hypernatraemic dehydration were identified within a 5-month period between two regional hospitals in Hong Kong. Unlike previous reported cases, these exclusively breast-fed infants presented with the unusual triad of fever, absence of overt signs of dehydration and within the first week of life. Three of the cases also had high serum bilirubin concentrations at presentation. The fever subsided quickly and the serum bilirubin concentration fell rapidly within a few hours of rehydration. All infants made an uneventful recovery without permanent neurological sequelae. Fever, presumably secondary to dehydration, is an useful early warning sign. These cases emphasize the importance of early and regular measurement of bodyweight in exclusively breast-fed infants so that prompt identification of affected cases may prevent potentially detrimental complications.

  15. Portal venous perfusion steal causing graft dysfunction after orthotopic liver transplantation: serial imaging findings in a successfully treated patient

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Min Su; Chung, Yong Eun; Choi, Jin Young; Park, Mi Suk; Lim, Joon Seok; Kim, Myeong Jin; Kim, Hon Soul [Dept. of Radiology, Severance Hospital, Yonsei University College of Medicine, Seoul (Korea, Republic of); Kim, Sang Kyun [Dept. of Pathology, Yonsei University College of Medicine, Seoul (Korea, Republic of)

    2016-01-15

    A 53-year-old male with hepatocellular carcinoma underwent orthotopic liver transplantation. Preoperative computed tomography revealed main portal vein luminal narrowing by flat thrombi and the development of cavernous transformation. On post-transplantation day 1, thrombotic portal venous occlusion occurred, and emergency thrombectomy was performed. Subsequent Doppler ultrasonography and contrast-enhanced ultrasonography confirmed the restoration of normal portal venous flow. The next day, however, decreased portal venous velocity was observed via Doppler ultrasonography, and serum liver enzymes and bilirubin levels remained persistently elevated. Direct portography identified massive perfusion steal through prominent splenorenal collateral veins. Stent insertion and balloon angioplasty of the portal vein were performed, and subsequent Doppler ultrasonography demonstrated normalized portal flow parameters. Afterwards, the serum liver enzymes and bilirubin levels rapidly normalized.

  16. The Possible Efficacy of Artichoke in Fluconazole Related Hepatotoxicity

    Directory of Open Access Journals (Sweden)

    Hüseyin Kurt

    2014-01-01

    Full Text Available Although fluconazole related hepatotoxicity (FRH is rare, mortal acute hepatic necrosis and jaundice were reported in immunocompromised states such as acquired immunodeficiency syndrome (AIDS and bone marrow transplant (BMT. We present a case of a patient with multiple sclerosis who developed hepatotoxicity with the use of a single 150 mg fluconazole tablet for fungal vaginitis, 10 days after methylprednisolone pulse treatment. Our patient’s alanine aminotransferase (ALT and aspartate aminotransferase (AST levels were decreased, 1200 U/L and 800 U/L, respectively, and bilirubin levels were consistent at 37 mg/dL. Artichoke which has anticholestatic and antioxidant properties was used by our patient. She consumed a 30 mg artichoke leaf extract tea 3 times a day. The bilirubin levels significantly declined at the end of the first week and all liver function tests were normalized within 2 months.

  17. Descriptive urological record of chimpanzees (Pan troglodytes) in the wild and limitations associated with using multi-reagent dipstick test strips.

    Science.gov (United States)

    Kaur, Taranjit; Huffman, Michael A

    2004-08-01

    Ten urine chemistry parameters were measured on 74 voided urine samples from 34 wild chimpanzees (Pan troglodytes). Multi-reagent urine dipstick tests were performed and results determined using colorimetric scales. Urine pH measured between 8 and 9 units in 91% of the chimpanzees. Test pads detected protein, erythrocytes, leukocyte esterase activity, and nitrites, ketones and bilirubin in 47, 32, 29, and chimpanzees, respectively. No apparent association between positive test results for blood in adult females and reproductive status was found. Overall, 17 of the 34 chimpanzees had positive urine test results for protein, hemoglobin, erythrocytes, leukocytes, nitrites, ketones, and/or bilirubin. Dipstick urinalysis alone is an unreliable method for assessing health and physiological status of wild chimpanzees. However, if combined with other diagnostics it could prove to be a valuable health-monitoring tool. Limitations associated with this methodology need to be considered when interpreting urinary dipstick test results. PMID:15271068

  18. Hepatoprotective activity of Vitex trifolia against carbon tetrachloride-induced hepatic damage

    Directory of Open Access Journals (Sweden)

    Manjunatha B

    2008-01-01

    Full Text Available Aqueous and ethanol extracts of leaf of Vitex trifolia was investigated for hepatoprotective activity against carbon tetrachloride induced liver damage. To assess the hepatoprotective activity of the extracts, various biochemical parameters viz., total bilirubin, total protein, alanine transaminase, aspartate transaminase and alkaline phosphatase activities were determined. Results of the serum biochemical estimations revealed significant reduction in total bilirubin and serum marker enzymes and increase in total protein in the animals treated with ethanol and aqueous extracts. However significant rise in these serum enzymes and decrease in total protein level was noticed in CCl4 treated group indicating the hepatic damage. The hepatoprotective activity is also supported by histological studies of liver tissue. Histology of the liver tissue treated with ethanol and aqueous extracts showed normal hepatic architecture with few fatty lobules. Hence the present study revealed that Vitex trifolia could afford significant protection against CCl 4 induced hepatocellular injury.

  19. Operational use of neem oil as an alternative anopheline larvicide. Part B: Environmental impact and toxicological potential.

    Science.gov (United States)

    Awad, O M

    2003-07-01

    This study was conducted to investigate the preliminary environmental and mammalian toxicology of neem oil, temephos and chlorpyriphos-methyl/fenitrothion. Culex pipiens, Daphnia magna and Gambusia affinis were used to study environmental impact. A high level of toxicity was observed, with slight differences between organisms. The emulsifiers individually also displayed toxicity towards the tested organisms. Up to 90 days daily oral crude neem oil treatment (5 g/kg body weight) of laboratory mice did not cause any significant changes in weekly body weight gain, nor in serum liver damage indicators, direct bilirubin or total bilirubin. Blood parameters of treated mice up to 90 days were not statistically different from those of control mice. Neem oil could be used as an environmentally friendly alternative to the traditional chemical anopheline larvicides. PMID:15748062

  20. [Treatment of neonatal hyperbilirubinemia

    Science.gov (United States)

    Carvalho, M D

    2001-07-01

    OBJECTIVE: To review the recent medical literature on the treatment of neonatal jaundice, focusing on practical aspects that are relevant to pediatricians and neonatologists. SOURCES: An extensive review of the related literature was performed, also including the authors clinical experience in this field of investigation. SUMMARY OF THE FINDINGS: Jaundice is very common among infants during the first days of life. Several factors such as maternal and neonatal history have to be considered before implementing treatment. Significant advances have been made in the past few years concerning the treatment of jaundiced newborn infants. This review focuses on three forms of treatment of neonatal hyperbilirubinemia: phototherapy, exchange transfusion and the use of drugs to reduce serum bilirubin concentration. CONCLUSIONS: Nowadays, the in-depth knowledge about the mechanism of action of phototherapy, the development of intensified phototherapy units and the use of drugs to reduce bilirubin formation, have contributed to significantly decrease the need for exchange transfusion. PMID:14676895

  1. Hyperbilirubinemia: new approaches to an old problem.

    Science.gov (United States)

    Schwoebel, A; Sakraida, S

    1997-12-01

    Hyperbilirubinemia continues to be a common problem of the term and near-term neonate. Each year more than 60% of infants born in the United States develop jaundice, making it difficult at times to differentiate jaundice due to pathologic reasons from jaundice due to physiologic ones. Now, the knowledge that bilirubin may even have a beneficial role as an antioxidant has caused a great deal of renewed interest in the management of jaundice. The American Academy of Pediatrics has published revised guidelines for management of neonatal jaundice that have resulted in much discussion. The article reviews current theories of bilirubin production and clearance, noninvasive and nonintrusive techniques to assess and care for jaundice, and newer concepts of preventive and treatment modalities from a nursing perspective. PMID:9451194

  2. Kernicterus in sick and preterm infants (1999-2002): a need for an effective preventive approach.

    Science.gov (United States)

    Bhutani, Vinod K; Johnson, Lois H; Shapiro, Steven M

    2004-10-01

    Kernicterus in sick and preterm infants is a rarity. Universal availability of phototherapy and concerted clinical efforts to identify, effectively manage and establish clinical guidelines have been instrumental in preventing kernicterus in US intensive care nurseries. However, in sick and preterm infants the absence of precise data on prevalence of bilirubin induced neurologic injury, the lack of proven predictive indices and the absence of evidence-based studies that clearly demonstrate the actual risk of kernicterus. These leave questions regarding the basis for clinical strategies and recommendations for the management of neonatal jaundice in this select population. This article reviews 6 preterm infants selected from the Pilot Kernicterus Registry who had recovered from life-threatening neonatal illnesses, briefly discusses current indices used to ascertain risk, and offers an initial bilirubin level based identification of infants while future directions and studies are conducted to supplement our presently incomplete knowledge for safer clinical practice. PMID:15686262

  3. Comparison of two dry chemistry analyzers and a wet chemistry analyzer using canine serum.

    Science.gov (United States)

    Lanevschi, Anne; Kramer, John W.

    1996-01-01

    Canine serum was used to compare seven chemistry analytes on two tabletop clinical dry chemistry analyzers, Boehringer's Reflotron and Kodak's Ektachem. Results were compared to those obtained on a wet chemistry reference analyzer, Roche Diagnostic's Cobas Mira. Analytes measured were urea nitrogen (BUN), creatinine, glucose, aspartate aminotransferase (AST), alanine aminotransferase (ALT), cholesterol and bilirubin. Nine to 12 canine sera with values in the low, normal, and high range were evaluated. The correlations were acceptable for all comparisons with correlation coefficients greater than 0.98 for all analytes. Regression analysis resulted in significant differences for both tabletop analyzers when compared to the reference analyzer for cholesterol and bilirubin, and for glucose and AST on the Kodak Ektachem. Differences appeared to result from proportional systematic error occurring at high analyte concentrations.

  4. ADH1B and ADH1C Genotype, Alcohol Consumption and Biomarkers of Liver Function

    DEFF Research Database (Denmark)

    Lawlor, Debbie A; Benn, Marianne; Zuccolo, Luisa;

    2014-01-01

    1C genes as instrumental variables (IV) to estimate the causal effect of long-term alcohol consumption on alanine aminotransferase (ALT), γ-glutamyl-transferase (γ-GT), alkaline phosphatase (ALP), bilirubin and prothrombin action. Analyses were undertaken on 58,313 Danes (mean age 56). RESULTS...... inverse association of alcohol with ALP [-1.5% (-1 .7, -1.3)], which differed from the strong positive effect found in genetic-IV analyses [11.6% (6.8, 16.4)] (p diffbilirubin and protrombin action were weak and close to the null....... CONCLUSIONS: Our results suggest that greater consumption of alcohol is related to poorer liver function as indicated by higher ALT, γ-GT and ALP, but not to clotting or bilirubin....

  5. EFFECTS OF PHENOBARBITAL ON HYPERBILIRUBINEMIA IN 28 PATIENTS WITH ICTERIC VIRAL HEPATITIS B

    Institute of Scientific and Technical Information of China (English)

    龙尧

    2001-01-01

    To observe the effects of Phenobarbital on hyperbilirubinemia in patients with icteric viral?hepatitis.Methods Sixty-two patients with viral icteric hepatitis B were randomly divided into two groups: Phenobarbital group received orally phenobarbital 90rag daily (30mg tid) for 2 to 4 weeks in addition to 60mg before sleep, if itch presented in night, plus liver-protective drugs; control group received only liverprotective drugs.Results Therapeutic efficacy of phenobarbital group was significantly better than that of control group(Hc=4.035, P<0.05) particularly in eliminating serum bilirubin and alleviating itch. Synchronized decrease of serum ALT and bilirubin occurred. No obvious side-effects were observed but rash occurred in one case.Conclusion Phenobarbital is safe and efficacious in treating hyperbilirubinemia.

  6. Montelukast induced acute hepatocellular liver injury

    Directory of Open Access Journals (Sweden)

    Harugeri A

    2009-01-01

    Full Text Available A 46-year-old male with uncontrolled asthma on inhaled albuterol and formoterol with budesonide was commenced on montelukast. He developed abdominal pain and jaundice 48 days after initiating montelukast therapy. His liver tests showed an increase in serum total bilirubin, conjugated bilirubin, aspartate aminotranferase, alanine aminotranferase, and alkaline phosphatase. The patient was evaluated for possible non-drug related liver injury. Montelukast was discontinued suspecting montelukast induced hepatocellular liver injury. Liver tests began to improve and returned to normal 55 days after drug cessation. Causality of this adverse drug reaction by the Council for International Organizations of Medical Sciences or Roussel Uclaf Causality Assessment Method (CIOMS or RUCAM and Naranjo′s algorithm was ′probable′. Liver tests should be monitored in patients receiving montelukast and any early signs of liver injury should be investigated with a high index of suspicion for drug induced liver injury.

  7. Plasma catecholamine level and portal venous pressure as guides to prognosis in patients with cirrhosis

    DEFF Research Database (Denmark)

    Tage-Jensen, U; Henriksen, Jens Henrik; Christensen, E;

    1988-01-01

    clinical and biochemical variables and survival. Forty-seven (58%) of the patients died during the follow-up period. Univariate analysis showed that plasma noradrenaline and adrenaline concentrations, portal pressure, indocyanine green clearance, serum sodium, bilirubin, and albumin concentrations, and the......Circulating noradrenaline is increased in patients with cirrhosis, especially in decompensated patients with ascites. Eighty-one patients with alcoholic cirrhosis were followed for up to 8 years in order to establish a possible relationship between plasma catecholamines, haemodynamics, and routine...... presence of ascites or cardiovascular disease were of significant prognostic value. In a multivariate analysis (Cox regression model), plasma noradrenaline concentration, portal pressure, serum bilirubin concentration, and the presence of ascites and cardiovascular disease remained significant independent...

  8. Hepatoprotective effect of Vernonia cinerea and Cumin seeds on Carbon Tetrachloride Induced Hepatic Oxidative Stress

    Directory of Open Access Journals (Sweden)

    A. Nishadh

    2013-09-01

    Full Text Available In this study, we have examined the protective effect of Vernonia cinerea against carbon tetrachloride (1.0ml / kg b.wt / day administered intraperitoneally for 2 days in male albino Wistar rats. The levels of aspartate transaminase, alanine transaminase, lactate dehydrogenase, alkaline phosphatase, bilirubin, creatinine, and urea were determined. The activities of glutathione, Vitamin C and the levels of lipid peroxides in 10% w/v liver homogenate were also determined. The CCl4 induction resulted a significant elevation in the levels of serum marker enzymes, bilirubin and creatinine with decreased urea. The activities of hepatic glutathione and vitamin C were also significantly depleted with increased lipid peroxides in CCl4 intoxicated rats. The oral administration of herbal drug alone did not show any toxicity in the liver tissue. These results suggest that the herbal drug may probably act as a natural antioxidant against CCl4 induced hepatic oxidative stress.

  9. Evaluation of Antioxidant and Hepatoprotective Activities of Moringa oleifera Lam. Leaves in Carbon Tetrachloride-Intoxicated Rats

    OpenAIRE

    Dharmendra Singh; Priya Vrat Arya; Ved Prakash Aggarwal; Radhey Shyam Gupta

    2014-01-01

    The antioxidant and hepatoprotective activities of the extract of Moringa oleifera leaves were investigated against CCl4-induced hepatotoxicity in rats. Hepatotoxic rats were treated with ethanol extract of Moringa oleifera for a period of 60 days at the following three dose levels; 100, 200 and 400 mg/kg body weight/day, orally. The activities were studied by assaying the serum marker enzymes like SGOT, SGPT, GGT, LDH, ALP, ACP, as well as total bilirubin, total protein and albumin in serum ...

  10. Genetic determinants of haemolysis in sickle cell anaemia

    OpenAIRE

    Milton, Jacqueline N.; Rooks, Helen; Drasar, Emma; McCabe, Elizabeth L.; Baldwin, Clinton T.; Melista, Efi; Gordeuk, Victor R; Nouraie, Mehdi; Kato, Gregory R.; Minniti, Caterina; Taylor, James; Campbell, Andrew; Luchtman-Jones, Lori; Rana, Sohail; Castro, Oswaldo

    2013-01-01

    Haemolytic anaemia is variable among patients with sickle cell anaemia and can be estimated by reticulocyte count, lactate dehydrogenase, aspartate aminotransferase and bilirubin levels. Using principal component analysis of these measurements we computed a haemolytic score that we used as a subphenotype in a genome-wide association study. We identified in one cohort and replicated in two additional cohorts the association of a single nucleotide polymorphism in NPRL3 (rs7203560; chr16p13·3) (...

  11. Early modification of sickle cell disease clinical course by UDP-glucuronosyltransferase 1A1 gene promoter polymorphism

    OpenAIRE

    Martins, R.; Morais, A.; Dias, A; Soares, I; Rolão, C; Ducla-Soares, J; Braga, L.; Seixas, T.; Nunes, B.; Olim, G; Romão, L; Lavinha, J; Faustino, P

    2008-01-01

    Elevated erythrocyte destruction in sickle cell disease (SCD) results in chronic hyperbilirubinaemia and, in a subset of patients, cholelithiasis occurs. We investigated whether the (TA)n promoter polymorphism in the UDP-glucuronosyltransferase 1A1 gene (UGT1A1) may modify bilirubin metabolism, influencing bilirubinaemia, predisposition to cholelithiasis and subsequent cholecystectomy, in a group of 153 young SCD patients (mean age 12.0 +/- 9.0 years) predominantly of Bantu beta S haplotype. ...

  12. Frequency of Developmental Dislocation of the Hip in Icteric Newborns Detected by Graf 's Ultrasonographic Method

    OpenAIRE

    Amin Foroughi; Reza Jalli; Mehrdad Mohammadhoseini

    2009-01-01

    "nIntroduction: A prospective detection of developmental dislocation of the hip (DDH) in icteric newborns and comparison with the frequency of DDH in other newborns. "nMaterials and Methods: During a one year period all icteric newborns who were referred to Nemazi hospital’s neonatal emergency room for bilirubin checking were screened by Graf"s ultrasonographic method for DDH.300 newborns (600 hips) were screened during this period. Any newborn with other problems such as ...

  13. In vitro and in vivo Efficacy of New Blue Light Emitting Diode Phototherapy Compared to Conventional Halogen Quartz Phototherapy for Neonatal Jaundice

    OpenAIRE

    Chang, Yun Sil; Hwang, Jong Hee; Kwon, Hyuk Nam; Choi, Chang Won; Ko, Sun Young; Park, Won Soon; Shin, Son Moon; Lee, Munhyang

    2005-01-01

    High intensity light emitting diodes (LEDs) are being studied as possible light sources for the phototherapy of neonatal jaundice, as they can emit high intensity light of narrow wavelength band in the blue region of the visible light spectrum corresponding to the spectrum of maximal bilirubin absorption. We developed a prototype blue gallium nitride LED phototherapy unit with high intensity, and compared its efficacy to commercially used halogen quartz phototherapy device by measuring both i...

  14. INCIDENCE OF NEONATAL HYPERBILIRUBINEMEA IN TERM NEW BORNS AT KBNTGH

    Directory of Open Access Journals (Sweden)

    Mujumdar

    2015-11-01

    Full Text Available AIM AND SCOPE: We conducted this study to estimate the incidence of hyperbilirubinemia in term new born with birth weight >2.5 kgs born at neonatal care unit of KBNTGH, and to determine the underlying causes, which would be of value in identifying and implementing strategies to prevent morbidity from this condition. BACKGROUND: Management of hyperbilirubinemia remains a challenge for neonatal medicine because of the risk for serious neurological complications related to the toxicity of bilirubin. MATERIALS AND METHODS: From January 2014 to January 2015, we screened 525 newborns born at KBNTGH (Khaja Bandanawaz Teaching & General Hospital attached to Khaja Bandanawaz Institute of Medical Scienceswith complaints of yellowish discoloration of skin were screened for jaundice. Infants aged 3–5 days and with unconjugated hyperbilirubinemia were included for assessment if they had a peak serum total bilirubin level exceeding 10 mg/dl. Sex, birth weight, gestational age, breast feeding, type of birth, presence of facial bruising (Including cephalohematoma and ABO group were noted. Patients with Toxoplasma or Cytomegalovirus infection, hepatic insufficiency, or suspected drug-induced hyperbilirubinemia were excluded from more detailed analysis. RESULTS: Our year-long nursery sample examined otherwise healthy-appearing term infants with birth weigth>2.5kgs for the prevalence of hyperbilirubinemia (Defined as bilirubin levels exceeding 6 mg/dL [11mol/L]. We found hyperbilirubinemia in 19% (100/525. Among the patients with hyperbilirubinemia, 1.2% had peak levels of bilirubin 20 mg/dL, levels which are generally considered to be potentially neurotoxic. CONCLUSIONS: In our clinic experience, hyperbilirubinemia was generally a serious medical issue and one whose etiology can usually be well defined.

  15. Blackcurrant Suppresses Metabolic Syndrome Induced by High-Fructose Diet in Rats

    OpenAIRE

    Ji Hun Park; Min Chul Kho; Hye Yoom Kim; You Mee Ahn; Yun Jung Lee; Dae Gill Kang; Ho Sub Lee

    2015-01-01

    Increased fructose ingestion has been linked to obesity, hyperglycemia, dyslipidemia, and hypertension associated with metabolic syndrome. Blackcurrant (Ribes nigrum; BC) is a horticultural crop in Europe. To induce metabolic syndrome, Sprague-Dawley rats were fed 60% high-fructose diet. Treatment with BC (100 or 300 mg/kg/day for 8 weeks) significantly suppressed increased liver weight, epididymal fat weight, C-reactive protein (CRP), total bilirubin, leptin, and insulin in rats with induced...

  16. Recent advances in the development of farnesoid X receptor agonists

    OpenAIRE

    Ali, Ahmad H; Carey, Elizabeth J.; Lindor, Keith D

    2015-01-01

    Farnesoid X receptors (FXRs) are nuclear hormone receptors expressed in high amounts in body tissues that participate in bilirubin metabolism including the liver, intestines, and kidneys. Bile acids (BAs) are the natural ligands of the FXRs. FXRs regulate the expression of the gene encoding for cholesterol 7 alpha-hydroxylase, which is the rate-limiting enzyme in BA synthesis. In addition, FXRs play a critical role in carbohydrate and lipid metabolism and regulation of insulin sensitivity. FX...

  17. Metronidazole Induced Liver Injury: A Rare Immune Mediated Drug Reaction

    Directory of Open Access Journals (Sweden)

    Dayakar Kancherla

    2013-01-01

    Full Text Available Drug induced liver injury (DILI can result either from dose-dependent direct hepatotoxicity or from an unpredictable dose-independent idiosyncratic reaction. Incidence of idiosyncratic DILI is estimated to be approximately 10–15 per 100,000 patient years. Here we report an extremely rare case of metronidazole induced delayed immune-allergic hepatocellular liver injury masquerading as autoimmune hepatitis. A previously healthy 54-year-old Caucasian male, who was treated with metronidazole for Clostridium difficile associated diarrhea, presented 3 months later with right upper quadrant abdominal pain. Laboratory tests revealed total bilirubin level of 12.7 mg/dL, direct bilirubin of 7.2 mg/dL, alanine aminotransferase (ALT of 973 IU/L, aspartate transaminase (AST of 867 IU/L, alkaline phosphatase (AP of 96 IU/L, and an INR of 1.9, suggestive of hepatocellular pattern of injury. A detailed workup for hepatitis revealed no other etiology. A clinical diagnosis of metronidazole induced liver injury was made. With a persistent rise in his bilirubin and transaminase levels, the patient was started on oral prednisone. At the 2-week posthospitalization follow-up visit, the patient reported a significant improvement in his overall sense of being well and liver functions tests trended down substantially (total bilirubin 7.2 mg/dL, ALT 420 IU/L, AST 276 IU/L, AP 183 IU/L, and INR 1.5.

  18. Morphological features of microglial cells in the hippocampal dentate gyrus of Gunn rat: a possible schizophrenia animal model

    OpenAIRE

    Liaury Kristian; Miyaoka Tsuyoshi; Tsumori Toshiko; Furuya Motohide; Wake Rei; Ieda Masa; Tsuchie Keiko; Taki Michiyo; Ishihara Kotomi; Tanra Andi; Horiguchi Jun

    2012-01-01

    Abstract Background Schizophrenia is a debilitating and complex mental disorder whose exact etiology remains unknown. There is growing amount of evidence of a relationship between neuroinflammation, as demonstrated by microglial activation, and schizophrenia. Our previous studies have proposed that hyperbilirubinemia plays a role in the pathophysiology of schizophrenia. Furthermore, we suggested the Gunn rat, an animal model of bilirubin encephalopathy, as a possible animal model of schizophr...

  19. Modulation of Tinospora rumphii and Zinc Salt on DNA Damage in Quinoline-Induced Genotoxicity and Hepatotoxicity in Male Albino Mice

    OpenAIRE

    Roger Salvacion Tan; Bajo, Lydia M.

    2014-01-01

    Tinospora rumphii (T. rumphii) is a folkloric medicinal plant that is widely distributed in Asia and Africa. It has been widely used by locals to treat many diseases including jaundice, which is a manifestation of liver damage. We investigated the action of T. rumphii crude extract together with zinc sulphate, a known tumor modulator, on hepatic injuries induced by intraperitoneal (i.p) injections of quinoline on albino mice. The hepatotoxic effect was assessed by bilirubin concentration in t...

  20. Biochemical and histopathological effects of administration various levels of Pomposia (Syzygium cumini) fruit juice as natural antioxidant on rat health

    OpenAIRE

    El-Anany, Ayman M.; Rehab F. M. Ali

    2011-01-01

    The aim of the current investigation was to evaluate the effects of administration various levels (400, 800 and 1,200 ppm) of pomposia extracts as natural antioxidant in comparison with BHT as synthetic antioxidant on some biochemical activities and histopathological examination of rats. Some of biochemical tests i.e. Alkaline phosphatase, transaminases]Aspartate transferase (AST) and alanine transferase (ALT) [,bilirubin, urea and uric acid were conducted. Histopathological examinations were...

  1. The effect of UGT1A1 promoter polymorphism in the development of hyperbilirubinemia and cholelithiasis in hemoglobinopathy patients.

    Directory of Open Access Journals (Sweden)

    Suad AlFadhli

    Full Text Available Present study was aimed to explore the effect of (TAn UGT1A1 gene promoter polymorphism on bilirubin metabolism, bilirubinaemia, predisposition to cholelithiasis and subsequent cholecystectomy, in Sickle-Cell Anemia (SCA and beta-Thalasemia major (bTH in Kuwaiti subjects compared to other population. This polymorphism was analyzed and correlated to total bilirubin and cholelithiasis in 270 age, gender, ethnically matched subjects (92 bTH, 116 SCA and 62 Controls using PCR, dHPLC, fragment analysis and direct sequencing. Four genotypes of UGT1A1 were detected in this study (TA6/6, TA6/7, TA6/8 and TA7/7. (TA6/8 was found only in four individuals; hence it was not included in the analysis. There was a statistically significant association of genotypes with serum total bilirubin levels in both bTH and SCA groups (p<0.001. Subjects with (TA7/7 had the highest total serum bilirubin level (178.7 ± 3.5 µmole/l. A significant association was observed between allele (TA7 and cholelithiasis development (p = 0.0001. The 40%, 67.5% and 100% of SCA with (TA6/6, (TA6/7 and (TA7/7 respectively developed cholelithiasis and were subsequently cholecystectomized. Our results confirm UGT1A1 (TA7 allele as one of the factors accounting for the hyperbilirubinemia and cholelithiasis observed in SCA and bTH.

  2. The Effect of Clofibrate on Hyperbilirubinemia of Term Neonates

    OpenAIRE

    Parviz Ayazi; Abolfazl Mahyar; Morteza Habibi; Farzad Ahmadabadi; Amir Javadi

    2012-01-01

    Clofibrate is a glucuronosyl transferase inducer that has been proposed to increase the elimination of bilirubin in neonates with hyperbilirubinemia. This study was conducted to determine the therapeutic effect of clofibrate in term neonates with non-hemolytic jaundice. This study was conducted on 52 newborns with pathologic unconjugated jaundice in Qazvin children hospital. Newborns divided randomly in two groups. Case group treated with clofibrate and intensive phototherapy, while control g...

  3. Assessment of Effect of Mirror Room in Management of Neonatal Hyperbilirubinemia

    OpenAIRE

    SH Nabavizade; SH Yazdanpanah

    2006-01-01

    ABSTRACT: Introduction & Objective: Jundice is the most common problem that can occur in the newborn. Although most jaundiced infants are otherwise perfectly healthy, jundice makes us anxious because bilirubin is potentially toxic to the central nervous system. Phototherapy is a highly effective method for prevention of exchange transfusion. The evaluation of the effect of mirror room on the decrease of hyperbilirubinemia is the purpose of this study. Materials & Metods: In this clini...

  4. EFFECT OF PHOTOTHERAPY ON HYPOCALCEMIA

    OpenAIRE

    Srinivasa; Renukananda; Srividya

    2015-01-01

    Jaundice is the most common and important abnormal physical problem in the first week of life. Due to immaturity of the bilirubin metabolism approximately 60% of term new borns and 80% of preterms (1) develop jaundice in the first week of life which may require phototherapy. The commonly known side effects of phototherapy are loose stools, hyperthermia , dehydration fluid loss, skin burn, photoretinitis, low platelet count, increased red cell osmotic fragility, bron...

  5. Evaluation of risk factors for development of severe hyperbilirubinemia in term and near term infants in Turkey

    OpenAIRE

    Bulbul, Ali; Cayonu, Nihal; Sanli, Merve Emecen; Uslu, Sinan

    2014-01-01

    Objective: To determine clinical features, etiology and risk factors in term and near term newborns with severe hyperbilirubinemia. Methods: During ten years period (2000 - 2009), infants of ≥ 35 gestational weeks who received phototherapy were evaluated retrospectively. The study population was divided into two groups and clinical features, etiology and risk factors were compared. Group 1 defined by those who had bilirubin level ≥25 mg/dl (severe hyperbilirubinemia) and group 2 defined by bi...

  6. Effect of induction of meconium evacuation using per rectal laxatives on neonatal hyperbilirubinemia in term infants: A systematic review of randomized controlled trials

    OpenAIRE

    Ravisha Srinivasjois; Ajay Sharma; Prakesh Shah; Maina Kava

    2011-01-01

    Objective: To study the efficacy of early meconium evacuation using per rectal laxatives on the level of serum bilirubin and the need for phototherapy in healthy term infants. Materials and Methods: Systematic review of randomized controlled trials comparing per rectal laxatives versus no intervention was conducted using English language articles identified from the Cochrane Central Register of Controlled Trials, Medline, Ovid, and CINAHL databases and bibliographies of selected articles. Eli...

  7. The Effect of Clofibrate on Neonatal Hyperbilirubinemia in Uncomplicated Jaundice

    OpenAIRE

    Seyed Aidin Sajedi; Reza Sharafi; Hamid R. Badeli

    2008-01-01

    Objective: Clofibrate has been used for several years as a hypolipidemic drug. Our aim was to study the effect of Clofibrate on neonatal hyperbilirubinemia in uncomplicated jaundice.Material & Methods: This clinical trial study has been conducted on 90 normal term neonates who were admitted for uncomplicated jaundice in 17th-Shahrivar Childrens Hospital of Guilan University of Medical Sciences from September 2005 to January 2006. The data included: age, sex, total and direct serum bilirubin, ...

  8. The effect of clofibrate and phototherapy on physiological jaundice in term newborns

    OpenAIRE

    Amir Hosein Hashemian; Sayed amir Masoud Borghaee; Homa Babaee; Ali Asghar Alipour; Mahba Azizi

    2011-01-01

    Background: Clofibrate is an effective anti lipid agent that induces glucuronyltransferase could increase bilirubin conjugation. The aim of this study was to evaluate effect of clofibrate on neonatal physiologic jaundice.Methods: Randomized clinical trial sampling method used and 60 healthy term neonates which were admitted in Imam Reza Hospital of Kermanshah-Iran because of indirect hyperbilirubinemia enrolled into the study. 30 neonates (case group) were treated with single oral dose of clo...

  9. Effects of Hyperbilirubinemia on Auditory Brainstem Response of Neonates Treated with Phototherapy

    OpenAIRE

    Salehi, Negin; Bagheri, Fereshte; Ramezani Farkhani, Hamid

    2016-01-01

    Introduction: One of the most common pathologies in neonates is hyperbilirubinemia, which is a good marker for damage to the central nervous system. The sensitivity of the auditory system to bilirubin has been previously documented, with much discrepancy in its effects on Auditory Brainstem Response results. Thus the objective of this study was to evaluate the effects of hyperbilirubinemia on Auditory Brainstem Response of neonates treated with phototherapy. Materials and Methods: Forty-two t...

  10. Expression and regulation of transmembrane transporters in healthy intestine and gastrointestinal diseases

    OpenAIRE

    Hruz, Petr

    2006-01-01

    Transmembrane transporters mediate energy dependent or independent translocation of drugs, potentially toxic compounds, and of various endogenous substrates such as bile acids and bilirubin across membranes. In this thesis the focus is on two classes of transporters, the ATPbinding cassette (ABC) transporters, which mediate ATP dependent transport and the solute carriers (SLC) which use electrochemical gradients for their transport. The transporters are expressed on membranes o...

  11. A Case of Biliary Pancreatitis Which Subsided after Endoscopic Sphincterotomy during Pregnancy

    OpenAIRE

    Gulbanu Erkan; Ibrahim Dogan; Seren Ozenirler; Candan Tuncer

    2011-01-01

    A 24-year-old pregnant patient was referred to us because of pain and tenderness in the right upper quadrant. Her liver enzymes and bilirubin levels were elevated; an abdominal ultrasound examination revealed gallstones within the gallbladder. Diagnosis of biliary pancreatitis was established based on elevated amylase levels. Oral intake was withheld; intravenous antibiotic therapy and total parenteral nutrition were administered. An endoscopic sphincterotomy without the use of fluoroscopy wa...

  12. Actinomyces naeslundii and Eikenella corrodens as rare causes of liver abscesses

    OpenAIRE

    Jaqua, Nathan Thomas; Smith, Adam J.; Shin, Terry T; Jahanmir, Jay

    2013-01-01

    A 48-year-old man with an unremarkable medical history was admitted with vague conditions of fever, chills, myalgias and malaise. Physical examination was remarkable for only scleral icterus. Laboratory evaluation revealed elevated aminotransferases, alkaline phosphatase and bilirubin. Imaging demonstrated two masses in the right lobe of his liver, which were ultimately drained and cultures demonstrated Actinomyces and Eikenella. He continued to have fever on broad-spectrum antibiotics until ...

  13. Structure of the Murine Constitutive Androstane Receptor Complexed to Androstenol: A Molecular Basis for Inverse Agonism

    OpenAIRE

    Shan, Li; Vincent, Jeremy; Brunzelle, Joseph S.; Dussault, Isabelle; Lin, Min; Ianculescu, Irina; Sherman, Mark A.; Forman, Barry M.; Fernandez, Elias J.

    2004-01-01

    The nuclear receptor CAR is a xenobiotic responsive transcription factor that plays a central role in the clearance of drugs and bilirubin while promoting cocaine and acetaminophen toxicity. In addition, CAR has established a “reverse” paradigm of nuclear receptor action where the receptor is active in the absence of ligand and inactive when bound to inverse agonists. We now report the crystal structure of murine CAR bound to the inverse agonist androstenol. Androstenol binds within the ligan...

  14. Maternal anti-D prophylaxis during pregnancy does not cause neonatal haemolysis

    OpenAIRE

    Maayan-Metzger, A; Schwartz, T; Sulkes, J; Merlob, P

    2001-01-01

    OBJECTIVE—To evaluate signs of haemolysis in babies of Rh-D negative mothers who underwent prophylaxis with anti-D immunoglobulin during pregnancy.
DESIGN—The following were evaluated in all babies of Rh-D negative mothers born within a three month period in our department: haemoglobin level, packed cell volume, mean corpuscular volume, reticulocytes, bilirubin level, and direct Coombs' test (direct anti-globulin test). The babies were divided into two groups according to...

  15. Reversal of Intestinal Failure-Associated Liver Disease by Switching From a Combination Lipid Emulsion Containing Fish Oil to Fish Oil Monotherapy.

    Science.gov (United States)

    Lee, Sanghoon; Park, Hyo Jung; Yoon, Jihye; Hong, Seul Hee; Oh, Chae-Youn; Lee, Suk-Koo; Seo, Jeong-Meen

    2016-03-01

    Intestinal failure-associated liver disease (IFALD) is a serious complication of parenteral nutrition (PN). Studies have shown that the amount and content of intravenous lipid emulsions (LEs) used is closely related to the development of IFALD. We report 2 cases of IFALD reversed by switching from a combination lipid emulsion containing fish oil to fish oil monotherapy (Omegaven; Fresenius Kabi Austria Gmbh, Graz, Austria). Patients initially received PN containing SMOFlipid 20% (SMOF; Fresenius Kabi Austria Gmbh, Graz, Austria), 2.0-3.0 g/kg/d, over 24 hours. When IFALD developed, LE was switched from SMOF to Omegaven starting at 1.0 g/kg/d over 12 hours. Case 1 was an 11-month-old girl with a diagnosis of extensive Hirschsprung disease up to the proximal jejunum. She developed direct bilirubinemia at 3 months, and the patient's LE was switched to Omegaven. A decrease in direct bilirubin was observed after 60 days on Omegaven, and IFALD was completely resolved after 90 days. Case 2 was a 1-month-old boy with a history of gastroschisis diagnosed with megacystis microcolon intestinal hypoperistalsis syndrome. He could not tolerate any oral feeds and was kept on full PN. He had elevated direct bilirubin and developed IFALD since 5 weeks. Omegaven treatment was initiated at 5 months. Direct bilirubin rose to 8 mg/dL during the first month on Omegaven. Then a gradual decrease in direct bilirubin was observed, and after 5 months on Omegaven, IFALD was completely resolved. In conclusion, 2 infants with advanced IFALD showed reversal of cholestasis by switching from SMOF to Omegaven monotherapy. PMID:25560679

  16. PATHOPHYSIOLOGIC BASIS OF LIVER DISEASE IN CYSTIC FIBROSIS EMPLOYING A ΔF508 MOUSE MODEL

    OpenAIRE

    Freudenberg, Folke; BRODERICK, ANNEMARIE L.; Yu, Bian B.; Leonard, Monika R.; Glickman, Jonathan N.; CAREY, MARTIN C.

    2008-01-01

    The molecular pathogenesis of cystic fibrosis (CF) liver disease is unknown. This study investigates its earliest pathophysiologic manifestations employing a mouse model carrying ΔF508, the commonest human CF mutation. We hypothesized that, if increased bile salt spillage into the colon occurs as in the human disease, this should lead to a hydrophobic bile salt profile and to “hyperbilirubinbilia” because of induced enterohepatic cycling of unconjugated bilirubin. Hyperbilirubinbilia may then...

  17. Equipment review: The molecular adsorbents recirculating system (MARS®)

    OpenAIRE

    Boyle, Martin; Kurtovic, Jelica; Bihari, David; Riordan, Stephen; Steiner, Christian

    2004-01-01

    The molecular adsorbents recirculating system (MARS®) is a form of artificial liver support that has the potential to remove substantial quantities of albumin-bound toxins that have been postulated to contribute to the pathogenesis of liver cell damage, haemodynamic instability and multi-organ failure in patients with acute liver failure (ALF) and acute-on-chronic liver failure (AoCLF). These toxins include fatty acids, bile acids, tryptophan, bilirubin, aromatic amino acids and nitric oxide....

  18. Protective Effect of Acacia nilotica (L.) against Acetaminophen-Induced Hepatocellular Damage in Wistar Rats

    OpenAIRE

    Kannan, Narayanan; Sakthivel, Kunnathur Murugesan; Guruvayoorappan, Chandrasekaran

    2013-01-01

    The potential biological functions of A. nilotica have long been described in traditional system of medicine. However, the protective effect of A. nilotica on acetaminophen-induced hepatotoxicity is still unknown. The present study attempted to investigate the protective effect of A. nilotica against acetaminophen-induced hepatic damage in Wistar rats. The biochemical liver functional tests Alanine transaminase (ALT), Aspartate transaminase (AST), Alkaline phosphatase (ALP), total bilirubin, ...

  19. Glutathione-S-transferase subtypes α and π as a tool to predict and monitor graft failure or regeneration in a pilot study of living donor liver transplantation

    OpenAIRE

    Jochum C; Beste M; Sowa J-P; Farahani MS; Penndorf V; Nadalin S; Saner F; Canbay A; Gerken G

    2011-01-01

    Abstract Objective Glutathione-S-Transferase (GST) subtype α and π are differentially expressed in adult liver tissue. Objective of the study was if GST α and p may serve as predictive markers for liver surgery, especially transplantations. Methods 13 patients receiving living donor liver transplantation (LDLT) and their corresponding donors were analyzed for standard serum parameters (ALT, AST, gGT, bilirubin) as well as GST-α and -π before LDLT and daily for 10 days after LDLT. Patients (R)...

  20. Inaugural-Dissertation

    OpenAIRE

    Kastner, Annett

    2004-01-01

    Mit vorliegender Arbeit wurde geprüft, ob an Dislocatio abomasi (DA) erkrankte Rinder vor dem Auftreten klinischer Symptome Veränderungen im Fettstoffwechsel aufweisen und ob Beziehungen zum Endotoxin-Metabolismus bestehen. Dazu wurde ein breites Untersuchungsspektrum zum Fett- und Leberstoffwechsel [b-Hydroxy-Butyrat (BHB), Freie Fettsäuren (FFS), Cholesterol, Tria-cylglycerol (TG), Phospholipide (PL), a-, b-, prä-b-Lipoproteine (LP), Bilirubin, Aspartat-Amino-Transferase (ASAT), Gamma-Gluta...