منابع مشابه
Urinary Steroids of Cats
Adrenal steroid secretion by cats has been studied by Bush (1951, 1953) and reviewed by Dorfman (1959). The cat adrenal secretes both cortisol and corticosterone. Arteta & Borrell (1958) and Borrell (1958) have reported studies of urinary excretion of 17-hydroxy corticosteroids (PorterSilber chromogens). Cats appear to excrete in urine very low concentrations of 17-hydroxy corticosteroids, all ...
متن کاملThe analysis of urinary 17-oxo steroids by gradient elution.
The present work was initiated by the observation of Reifenstein, Homburger & Dobriner (1950) that 3a: 1 1l-dihydroxy-5p-androstan-17-one (1 l,B-hydroxyaetiocholanolone), a minor component of the urinary 17-oxo steroids, was significantly associated with neoplastic growth. The re-examination of this problem has led to the development of a micro method for the quantitative separation and determi...
متن کاملOxidation of urinary 17-oxogenic steroids with sodium metaperiodate.
Oxidation of urinary pregnane-17,20-diols (17.oxogenic steroids) by sodium metaperiodate is complete within 10 mm at 55#{176}C if the concentration of sodium metaperiodate at the end of the reaction exceeds 1.5 X 10-SM. A safe excess of sodium metaperiodate is present if assay samples, after incubation for 10 mm at 55#{176}C in 3 X 10-EM ethylene glycol, give a positive test with starch-iodide ...
متن کاملSynthesis of Novel 17-Oxo-17a-Aza-D-Homo-3, 5-Seco-Steroids as Potential 5α-Reductase Inhibitors
Benign prostatic hyperplasia (BPH) is a non-malignant enlargement of the prostate gland. Itis a leading disorder of the elderly male population. Excessive production of dihydrotestosteronehas been implicated in this pathological condition. Steroidal 5α-reductase is a membrane boundNADPH dependent enzyme which is responsible for the conversion of testosterone (T) todihydrotestosterone (DHT). The...
متن کاملUrinary steroids. 1. Formation and determination of 3:5-dinitrobenzoates of alcoholic steroids.
Peters, J. P. & Van Slyke, D. D. (1931). Quantitative Clinical Chemistry, vol. 2. London: Bailliere, Tindall and Cox. Pfaltz, M. H. & Baudisch, 0. (1923). J. Amer. chem. Soc. 45, 2972. Rigg, T., Stein, G. & Weiss, J. (1952). Proc. Roy. Soc. A, 211, 375. Scholes, G., Stein, G. & Weiss, J. (1949). Nature, Lond., 164, 709. Scholes, G. & Weiss, J. (1950). Nature, Lond., 166, 640. Scholes, G. & Weis...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1963
ISSN: 0006-2936
DOI: 10.1042/bj0890051