Studies on Solvolysis of Dehydroepiandrosterone and Androsterone Sulfate
نویسندگان
چکیده
منابع مشابه
[Studies on solvolysis of dehydroepiandrosterone and androsterone sulfate].
Although heated strong acid hydrolysis has been generally adopted as the routine procedure for the hydrolysis of urinary steroids, it has disadvantages such as the destruction of the steroids, the production of artifacts, and the remarkable changes of the pattern of the fractionation. As for the glucuronide types of the urinary steroids, the .-glucuronidase method can now be used instead of thi...
متن کاملIsolation of Androsterone Sulfate
It has long been recognized that many of the steroids, including the androgens, are excreted in urine in conjugation with other substances which render them not only more water-soluble but also neutralize their physiological activity to a great extent. In 1936 Cohen and Marrian (1) isolated estriol glucuronide, the conjugated form of estriol, from the urine of pregnant women and in 1936 Venning...
متن کاملpostnatal studies of bats (pipistrellus kuhlii and miniopterus schreibersii) & histomorphology and histochemistry studies of organs and diseases of (neurergus microspilotus and n. kaiseri)
1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...
The acid-catalyzed solvolysis of dehydroepiandrosterone sulfate and its significance in the examination of urinary 17-ketosteroids.
Burstein and Lieberman (1) have reported a procedure for the examination of urinary ketosteroid sulfates which involves the extraction of an acidified urine with ethyl acetate followed by solvolysis of the sulfates in the organic phase at 39” for 24 hours. Although the previous authors (1) recognized that this technique partitions water and mineral acid into the ethyl acetate, they did not repo...
متن کاملSerum dehydroepiandrosterone, dehydroepiandrosterone sulfate, and pregnenolone sulfate concentrations in patients with hyperthyroidism and hypothyroidism.
BACKGROUND Dehydroepiandrosterone (DHEA) and dehydroepiandrosterone sulfate (DHEA-S) have been suggested to have protective effects against cardiovascular disease, cancer, immune-modulated diseases, and aging. We examined serum concentrations of DHEA, DHEA-S, and pregnenolone sulfate (PREG-S) in patients with thyroid dysfunction. METHODS Steroids extracted with methanol from serum sample were...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Folia Endocrinologica Japonica
سال: 1962
ISSN: 0029-0661
DOI: 10.1507/endocrine1927.37.10_1073