Sample records for 17-ketosteroids

  1. 21 CFR 862.1430 - 17-Ketosteroids test system. (United States)


    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false 17-Ketosteroids test system. 862.1430 Section 862.1430 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED... treatment of disorders of the adrenal cortex and gonads and of other endocrine disorders,...

  2. 17-Ketosteroids urine test (United States)

    ... to: Adrenal glands not making enough of their hormones ( Addison disease ) Kidney damage Pituitary gland not making enough of its hormones ( hypopituitarism ) Removal of the testicles (castration)

  3. Biosynthesis of a steroid metabolite by an engineered Rhodococcus erythropolis strain expressing a mutant cytochrome P450 BM3 enzyme

    NARCIS (Netherlands)

    Venkataraman, Harini; Te Poele, Evelien M; Rosłoniec, Kamila Z; Vermeulen, Nico; Commandeur, Jan N M; van der Geize, Robert; Dijkhuizen, Lubbert


    In the present study, the use of Rhodococcus erythropolis mutant strain RG9 expressing the cytochrome P450 BM3 mutant M02 enzyme has been evaluated for whole-cell biotransformation of a 17-ketosteroid, norandrostenedione, as a model substrate. Purified P450 BM3 mutant M02 enzyme hydroxylated the ste

  4. Gonadic function in workmen with long-term exposure to microwaves

    Energy Technology Data Exchange (ETDEWEB)

    Lancranjan, I.; Maicanescu, M.; Rafaila, E.; Klepsch, I.; Popescu, H.I.


    Thity-one technicians (mean exposure 8 years) were investigated by questionnaire, semen analysis, and determination of 17-ketosteroids and gonadotropin in 24-h urine. Libido was decreased in 22 subjects and 23 showed disorders of spermatogenesis. A direct effect of microwaves on the germinal epithelium appeared probable.

  5. Synthesis of 16 alpha-3H androgen and estrogen substrates for 16 alpha-hydroxylase. (United States)

    Cantineau, R; Kremers, P; De Graeve, J; Cornelis, A; Laszlo, P; Gielen, J E; Lambotte, R


    The synthesis of 16 alpha-3H androgens and estrogens is described. 1-(3H)-Acetic acid in the presence of zinc dust reacts with 16 alpha-bromo-17-ketosteroids to produce 16 alpha-3H-17-ketosteroids. This chemical reaction was used to prepare 16 alpha-3H-dehydroepiandrosterone (I) and 16 alpha-3H-estrone acetate (XI) from 16 alpha-bromo-dehydroepiandrosterone (X) and from 16 alpha-bromo-estrone acetate (XII), respectively. Using appropriate microbiological techniques, it was possible to convert these radiolabelled substrates into 16 alpha-3H-androstenedione (II) and 16 alpha-3H-estradiol-17 beta (VII). 16 alpha-3H-Estrone (VI) was obtained by the chemical hydrolysis of 16 alpha-3H-estrone acetate. The label distribution as determined by microbiological 16 alpha-hydroxylations indicated a specific labelling of 77% for androgens and 65% for estrogens in the 16 alpha position. These substrates can be used for measuring the 16 alpha hydroxylase activity, an important step in the biosynthesis of estriol (VIII) and estetrol (IX). PMID:7013160

  6. Synthesis of 16 alpha-/sub 3/H androgen and estrogen substrates for 16 alpha-hydroxylase

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    Cantineau, R.; Kremers, P.; De Graeve, J.; Cornelis, A.; Laszlo, P.; Gielen, J.E.; Lambotte, R.


    The synthesis of 16 alpha-/sup 3/H androgens and estrogens is described. 1-(/sup 3/H)-Acetic acid in the presence of zinc dust reacts with 16 alpha-bromo-17-ketosteroids to produce 16 alpha-/sup 3/H-17-ketosteroids. This chemical reaction was used to prepare 16 alpha-/sup 3/H-dehydroepiandrosterone (I) and 16 alpha-/sub 4/H-estrone acetate (XI) from 16 alpha-bromo-dehydroepiandrosterone (X) and from 16 alpha-bromo-estrone acetate (XII), respectively. Using appropriate microbiological techniques, it was possible to convert these radiolabelled substrates into 16 alpha-/sup 3/H-androstenedione (II) and 16 alpha-/sup 3/H-estradiol-17 beta (VII). 16 alpha-/sup 3/H-Estrone (VI) was obtained by the chemical hydrolysis of 16 alpha-/sup 3/H-estrone acetate. The label distribution as determined by microbiological 16 alpha-hydroxylations indicated a specific labelling of 77% for androgens and 65% for estrogens in the 16 alpha position. These substrates can be used for measuring the 16 alpha hydroxylase activity, an important step in the biosynthesis of estriol (VIII) and estetrol (IX).

  7. Excreção urinária de 17-Cetoesteroides neutros no cavalo normal e no cavalo castrado

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    Fernando Ubatuba


    Full Text Available Total urinary neutral 17-steroids were determined in normal and in castrated horses. One liter of a 15-26 hours urine collection was hydrolysed by refluxing with 10% HC1 (v/v for ten minutes and extracted with peroxyde-free ethyl ether. The extract was purified by washing with saturated NaHCO³ and KOH solutions. One half of the crude neutral fraction was fractionated with Girard's "T" reagent . The Zimmermann reaction was performed both in the ketonic and in the crude neutral extracts, using alcoholic 2.5N KOH and a 60 minutes period for the colour development in the dark. Optical density measuments were made in a grating Coleman Universal Spectrophotometer at 420 mµ and 520mµ; for the crude neutral fraction a colour correction equation was applied. The aliquot fraction used for colorimety was adjusted for keeping optical density measurements within the range 0.2 to 0.7. Androsterone (mp. 184-184.5°C with an absorption maximum at 290.5 mµ (Beckman Model DU Spectrophotometer was used as a reference standard. Table I, ilustrates the results obtained. At the 0.05 probability level there is a significant difference among castrated and normal group means (Fischer's "t" test. when were used the data obtained from the ketonic fractions; in spite of the use of a colour correction applied for inespecific chromogens, the same results could not be obtained with the crude neutral fractions, Since Girard's reagent fractionation is generaly accepted as the best method for correcting the inespecific chromogen interference in the determination of the 17-ketosteroids by the Zimmermann reaction, we emphasize the value of the results obtained with the ketonic fractions. From these results it appears, as occurs in others mammals, that castrated horses show a lower level of urinary 17-ketosteroids excretion than the normal horses. The significance of the horse testis contribution for the neutral urinary steroid metabolites is discussed. Since horse urine has a

  8. Radioimmunological determination of plasma androstenione and dehydroepiandrosterone levels in hirsute women before and during therapy using cyproterone acetate and ethinyl estradiol

    International Nuclear Information System (INIS)

    Plasma androstendione and dehydroepiandrosterone levels were determined in 54 hirsute women before and after treatment with cyproterone acetate and ethinyl estradiol. Anderostenione levels were, on an average, significantly higher than in normal control persons (1.97+-0.97 ng/ml as compared to 1.54+-0.46 ng/ml) while the dehydroepiandrosterone levels were nearly twice as high (9.99+-5.71 ng/ml as compared to 5.17+-1.98 ng/ml). Increased cortisol and 17-ketosteroid levels were recorded only in a few women with raised androgen levels. The improved clinical picture after therapy was not in all cases accompanied by lower hormone levels. On the other hand, lower hormone levels were measured also in women who did not improve. There appears to be no close correlation between the clinical picture and the plasma androstendione and dehydroepiandrosterone levels. (orig./MG)

  9. Impact of feeding ethanolic extract of root bark of Cananga odorata (Lam) on reproductive functions in male rats. (United States)

    Anitha, P; Indira, M


    The 50% ethanolic extract of the root bark of C. odorata administered orally at the dose of 1g/kg body weight/day for 60 days resulted in decreased epididymal sperm motility and sperm count in male albino rats. Morphological abnormalities were also observed in the sperms. The testicular glycogen, the activities of 3beta hydroxy steroid dehydrogenase, glucose 6-phosphate dehydrogenase, malic enzyme, sorbitol dehydrogenase in seminal vesicle, fructose in seminal plasma and serum testosterone were significantly decreased in treated group. While testicular cholesterol level, the concentration of the fecal bile acids, urinary excretion of 17 ketosteroids, the activities of 17beta hydroxy steroid dehydrogenase, epididymal lactate dehydrogenase and that of testicular HMG CoA reductase were increased in treated group when compared to control. The results suggest that the ethanolic extract of C. odorata possesses the spermatotoxic effects in male albino rats. PMID:17176670

  10. Sperm count suppression without endocrine dysfunction in lead-exposed men

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    Assennato, G.; Paci, C.; Baser, M.E.; Molinini, R.; Candela, R.G.; Altamura, B.M.; Giorgino, R.

    To determine if increased lead absorption was associated with sperm count suppression or perterbation of the hypothalamopituitary system, the authors compared battery workers (N = 18), who were exposed to high airborne lead levels, with cement workers (N = 18), who were exposed to ambient lead levels. Blood lead, urinary lead, semen lead, and zinc protoporphyrin concentrations were markedly elevated (p < .001) in battery workers. Battery workers had a significantly shifted (p < .025) frequency distribution of sperm count (median count, 45 vs. 73 x 10/sup 6/ cells/cc, respectively). There were no significant differences between the two groups in mean follicle-stimulating hormone, testosterone, prolactin, luteinizing hormone, or total neutral 17-ketosteroid levels. Potential confounding factors (alcohol, cigarette, and coffee consumption, frequency of intercourse, and days of abstinence prior to semen donation) were not significantly different between the two groups. These results suggest a direct toxic effect of increased lead absorption on sperm production or transport in man.

  11. Transnasal stereotactic surgery of pituitary adenomas concomitant with acromegaly. (United States)

    Metyolkina, L; Peresedov, V


    Since 1960 we have performed stereotactic transsphenoidal cryohypophysectomy in 70 patients with pituitary adenomas, 42 women and 28 men, aged 11-59 years. The dominant clinical syndrome was acromegaly in 50 patients, galactorrhea in 9, amenorrhea in 5, adiposogenital dystrophy in 4 and gigantism with mild endocrine symptomatology in 2 patients. In 67 patients the histological structure of the tumor was established by biopsy (50 patients with eosinophil adenoma, 10 with mixed-type adenoma, 4 with chromophobe adenoma and 3 with basophil adenoma). Somatotropic hormone, human growth hormone, prolactin, ACTH and 17-ketosteroid levels indicated active/inactive adenomas. In 42 cases the adenoma was only intrasellar, which was confirmed by contrast X-ray investigations, CT scanning, angiography and ophthalmological investigation. Transnasal stereotactic cryohypophysectomy was performed in all 70 cases using a stereotactic apparatus especially designed for operations on the pituitary. All patients (except 2) tolerated the operation well. No complications occurred. Vision deteriorated after operation in 1 patient. Thrombosis of the left middle cerebral artery developed in another patient. All the other patients noted improvement directly after operation - rapid diminution of signs of acromegaly and rapid restoration of normal values in hormonal tests. Six patients with continuing growth of the tumor underwent a second operation 1.5-6 years after the first operation. We conclude from our own clinical experience and information from the literature that transnasal stereotactic cryodestruction is highly effective and relatively safe in the management of pituitary adenoma. PMID:8916351

  12. Adrenal Cortical and Medullar Hyperplasia-A Retrospective Analysis of 6 Cases

    Institute of Scientific and Technical Information of China (English)

    陈敏; 鲁功成; 张齐均


    Summary: The features of the symptoms, laboratory tests and pathological characteristics of a-drenal cortical and medullary hyperplasia were studied. In 6 cases of hypercatecholaminenia, plas-ma norepinephrine (NE), epinephrine (E), catecholamine (CA) and 24-h urinary vanillylmandelicacid (VMA), 17-hydroxycorticosteroid (OHCS) and 17-ketosteroid (KS) were determined. A-drenal glands were examined by CT scan and 131I-MIBG imaging. Pathological examination wasperformed after operation. The results showed that in 6 cases of hypercatecholaminenia (3 menand 3 women) aged from 34-50 years, the clinical features were just like "pheochromocytoma",for example, episodic headache, perspiration, palpitation, pallor, apprehension, nausea, tremor,anxiety and so on. Plasma levels of CA, NE and E were elevated in all 6 cases. 24-h urinary sam-ples obtained at the onset revealed elevated VMA in 1 case. 24-h urinary cortisol was obviously el-evated in all 6 cases. 24-h urinary 17-OHCS, 17-KS was normal. B-type ultrasound, CT, MRIand 13I-MIBG revealed 9 lateral adrenal gland diffuse or nodular enlargement in 6 cases. Patholog-ic examination showed adrenal cortical and medullary hyperplasia. Clinically, adrenal cortical andmedullary hyperplasia resembled "pheochromocytoma". The most significant feature of this dis-ease was both elevated plasma CA and 24-h urinary cortisol obviously. Pathologic examinationshowed adrenal cortex nodular hyperplasia and medullar diffuse or limit hyperplasia. Whether it isan independent disease or symptoms of the other disease has not final conclusion up till now

  13. Synergistic effect of carbon monoxide with other biologically active injurious factors on the organism

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    Pankow, D.; Ponsold, W.


    The combined effects on biological organisms are reported for carbon monoxide and carbon dioxide, nitrogen oxides, sodium nitrite, hydrocyanic acid, carbon disulfide, sulfur dioxide, ammonia, hydrogen peroxide, ethanol, trichloroethylene, carbon tetrachloride, methane, benzene, iodine acetate, cholesterol, benzpyrene, hexobarbitol, zoxazolamine, nembutal, luminal, morphine, adrenalin, persantin, cytochrome c, aldrin, carbaryl, cyclodiene epoxide; and physical influences such as ambient temperature, atmospheric pressure, ionizing radiation, noise, and vibration. A literature review shows that with increasing CO/sub 2/ and decreasing oxygen concentration in the inhalation air, the toxicity of CO increased in experiments with mice and canaries. Oxides of nitrogen enhance the toxic effect of CO in an additive way and at times synergistically. At 500 m from a metallurgical plant in the USSR the maximum allowable immission concentrations for CO and SO/sub 2/ were exceeded. In children residing there a higher normal erythrocyte number, hemoglobin content, and catalase activity were found in the blood along with higher concentrations of coproporphyrin and 17-ketosteroids. All values returned to normal after an 8-week stay of these children away from the metallurgical plant.

  14. Sympathoadrenal and hypophyseal-adrenal systems in preoperative irradiation of patients with esophageal and cardiac cancer

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    Tarutinov, V.I.; Starosel' skij, I.V.; Gol' dshmidt, B.Ya.; Shmal' ko, Yu.P.; Levchenko, A.M. (Nauchno-Issledovatel' skij Rentgeno-Radiologicheskij i Onkologicheskij Inst., Kiev (Ukrainian SSR))


    A study was made of 74 patients with esophageal and cardiac cancer, Stages 3 and 4. The excretion of catecholamines, corticosteroids and their precursors was studied, tests with adrenalin before and after preoperative irradiation at a summary dose of 30 Gy were done. It has been shown that before the start of radiation therapy the excretion of catecholamines and corticosteroids is lowered, the reaction to adrenalin administration is negative in most patients, the phase syndrome of cardiac hypodynamics associated with disturbed function of the sympathoadrenal system was revealed. Preoperative irradiation in patients with esophageal and cardiac cancer results in an increased excretion of 17-ketosteroids (17-KS) and 17-ketogenic steroids, however 17-KS excretion does not reach the normal level. For better tolerance of irradiation and for a radiosensitization effect testenate is administered to patients before and during radiation therapy. The administration of testenate 7-10 days before the start and during radiotherapy proved to be effective which was confirmed by noticeable necrobiotic and necrotic changes of cancer cells.

  15. Carcinoma of the Adrenal Cortex in Children%小儿肾上腺皮质癌

    Institute of Scientific and Technical Information of China (English)

    黄澄如; 贺荣友


    @@ 婴幼儿肾上腺皮质功能性病变,表现为使皮质醇症时,多系肾上腺皮质癌.我院1960~1979年共收治4例,均经手术切除.近期2例随访已超过2年,情况良好;1例术后死亡;1例未随访.今简要报导及讨论如下.%Adrenal carcinoma is often responsible for Cushing's syndrome complicated with virilization or isosexual precocity in a male.Usually the carcinoma is large enough to be palpable on examination and can be demonstrated by routine pyelography.Increased level of urinary 17-ketosteroids or 17-hydroxycorticoids and the failure to respond to the dexamethasone suppresion test strongly support the diagnosis of carcinoma.Four patients,two males and two females,with adrenal carcinoma were admitted to this hospital from 1960 to 19799 with the age ranging from 2 to 4 years.

  16. 泌尿外科常用术语英文缩写(之三)

    Institute of Scientific and Technical Information of China (English)


    (续第15卷第9期第433页) IA idiopathic Addison's disease 特发性阿狄森氏病 IAH idiopathic adrenal hyperplasia 特发性肾上腺增生 IBI intermittent bladder irrigation 间歇性膀胱灌注法 IC ion chromatography 离子色谱(法) ICT immunoreactive calcitonin 免疫反应性降钙素 ID idiotype 个体基因型 IEC intraepithelial carcinoma 上皮内癌 IF intrinsic factor 内因子 Ig immunoglobulin 免疫球蛋白 IHC idiopathic hypercalcemia 特发性高钙血 IHC idiopathic hypercalciuria 特发性高钙尿 IL-2 interleukin-2 白细胞介素2 IMP incomplete male pseudohermaphroditism 不完全性 男性假两性畸形 INF interferon 干扰素 IP intravenous pyelography 静脉肾盂造影术 IPARF idiopathic postpartum acute renal failure 特发性 产后急性肾功能衰竭 IS index of sexuality 性指数 ITFS incomplete testicular feminization syndrome 不完 全性睾丸女性化综合征 IVF in vitro fertilization 体外受精 IVP intravenous pyelography 静脉(或排泄性)肾盂造影 术 IVU intravenous urography 静脉尿路造影术 K 17-K 17-ketosteroid 17-酮类固醇 KFAB kidney-fixing antibody 肾结合抗体 KGT kidney glucosidetransferase 肾葡萄糖苷转移酶 KUB kidneys,ureters,bladder 肾,输尿管,膀胱 L LAD lactic acid dehydrogenase 乳酸脱氢酶 LAF lymphocyte activating factor 淋巴细胞活化因子 LAG lymphangiogram 淋巴管造影照片 LASER light amplification by stimulated emission of ra- diation (Laser) 激光 LC liquid chromatography 液相色谱(法 LDH lactate dehydrogenase 乳酸脱氢酶 LGV lymphogranuloma venereum 性病性淋巴肉芽肿 LH luteinizing hormone 促黄体(生成)激素 LK left kidney 左肾 LU left ureter 左输尿管 Lues I primary syphilis 一期梅毒 Lys lysine 赖氨酸 M M male 男性,雄性 MA membrane antigen 膜抗原 MC mineralocorticoid (肾上腺)盐皮质激素 MMC mitomycin 丝裂霉素 McAb monoclonal antibody 单克隆抗体 MDR multidrug resistance

  17. 改良微柱法检测17-OH,17-KS和VMA及其临床应用%Clinical Application of Detecting 17-OH, 17-KS and VMA by a Modified Micro Column Method

    Institute of Scientific and Technical Information of China (English)

    李继霞; 罗南萍; 公衍文; 胡成进


    目的 完善并改良微柱分光光度检测技术,探讨其在肾上腺肿瘤、心血管等疾病中的应用价值.方法 选取2010年4月~2013年3月济南军区总医院住院肾上腺肿瘤患者181例,高血压和冠心病患者168例作为实验组,同时以30例健康人作为对照组.所有研究对象均采用微柱分光光度比色法,进行24 h尿液17羟皮质类固醇(17-Hydroxycorticosteroids,17-OH)、17酮皮质类固醇(17-Ketosteroids,17-KS)和香草扁桃酸(Vanilmandelic Acid,VMA)的水平检测.在常规检测方法基础上,17-OH采用活性高岭土作为吸附剂,过柱后采用70 ml/dl的无水乙醇作为洗脱液收集待测成分;17-KS检测在加热水解后,以3 000 r/min离心5 min后再行过柱,Zimmermann显色过程稳定在4℃,60min;VMA检测则将样本pH值调至6.5~7.0时再行过柱,比色时在做样品测定的同时做试剂空白、样品空白.以蒸馏水调零测标准及其空白、样本及其空白,最后计算时将各自空白扣除,并进行回收率、精密度等方法学评价.结果 ①应用此方法检测17-OH,17-KS及VMA的平均回收率分别为76%,98.8%和90.8%;平均批内变异系数为9.5%,5.9%和3.8%;平均批间变异系数为10.0%,5.6%和8.4%.②17-OH在肾上腺良性肿瘤组、肾上腺恶性肿瘤组、嗜铬细胞瘤组、腹膜后肿瘤组、其他恶性肿瘤组、高血压组、冠心病组和对照组中的水平(μmol/24 h)分别为30.49±18.61,34.51±18.59,32.08±10.89,30.74±25.53,67.25±27.06,44.83±32.63,39.59±24.93和18.90±3.98,差异均有统计学意义(t=3.08,P<0.05;t=3.19,P<0.05;t=3.11,P<0.05;t=2.93,P<0.05,t=10.248,P<0.01;t=5.19,P<0.01;t=4.01,P<0.01);17-KS在肾上腺良性肿瘤组、嗜铬细胞瘤组、肾上腺恶性肿瘤组、其他恶性肿瘤组、高血压组、冠心病组和对照组中的水平(μmol/24 h)分别为50.66±17.28,57.62±31.51,60.78±24.78,89.20±33.29,79.21±32.45,68.57±36.22和39.46±3.74,