Radioimmunoassay for male canine plasma 4-androstenedione, testosterone and 5α-dihydrotestosterone
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چکیده
منابع مشابه
Episodic fluctuation in plasma testosterone and dihydrotestosterone in male ferrets during the breeding season.
In a number of species, including rats and mice (Bartke, Steele, Musto & Caldwell, 1973), bulls (Katangole, Naftolin & Short, 1971), and rams (Purvis, Illius & Haynes, 1974), there is evidence of episodic fluctuation of circulating levels of testosterone. It has generally been concluded that testosterone is released from the testis in a pulsatile fashion, temporally related to the episodic rele...
متن کاملSeasonal Changes in Plasma Testosterone and 5 α - Dihydrotestosterone Levels in the Adult Male
Seasonal changes in plasma levels of testosterone (T) and 5α-dihydrotestosterone (DTH) were examined in the adult male Japanese red-bellied newt. The concentration of plasma T increased significantly (p<0.05) from January to February and decreased drastically from April to July when it reached its minimum. After the summer decline, plasma T increase rapidly from July to October (p<0.05) and rea...
متن کاملAndrostenedione, dehydroepiandrosterone and testosterone in ovarian vein plasma and androstenedione in peripheral arterial plasma during the bovine oestrous cycle.
Catheters were placed in the carotid artery via a facial artery (n = 12) and in the ovarian vein (n = 12), and, in conjunction, electromagnetic flow meters were placed around the ovarian artery (n = 6) in cyclic beef cows. Androstenedione was quantitatively the highest and dehydroepiandrosterone the lowest of the ovarian androgens measured. Ovarian androgens were correlated positively with each...
متن کاملMicroinjection of Dihydrotestosterone as a 5α-Reduced Metabolite of Testosterone into CA1 Region of Hippocampus Could Improve Spatial Learning in the Adult Male Rats
CA1 region of hippocampus has an important role in learning and memory. Previous reports have shown that androgens like testosterone and its metabolites are present in high concentration in CA1 region of hippocampus. Androgen receptors have also high density in this region. Therefore, it is suggested that neurohormones in CA1 have an important role in learning and memory. It is likely that...
متن کاملMicroinjection of Dihydrotestosterone as a 5α-Reduced Metabolite of Testosterone into CA1 Region of Hippocampus Could Improve Spatial Learning in the Adult Male Rats
CA1 region of hippocampus has an important role in learning and memory. Previous reports have shown that androgens like testosterone and its metabolites are present in high concentration in CA1 region of hippocampus. Androgen receptors have also high density in this region. Therefore, it is suggested that neurohormones in CA1 have an important role in learning and memory. It is likely that...
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ژورنال
عنوان ژورنال: The Japanese journal of animal reproduction
سال: 1977
ISSN: 0385-9932
DOI: 10.1262/jrd1977.23.63