Using the S-rR strain of the medaka Oryzias latipes, we examined the effect of a non-aromatizable androgen on sex determination. Intrafollicular immature oocytes isolated before breakdown of the germinal vesicle were incubated in the presence of 17alpha-methyldihydrotestosterone (MDHT) for about
The Journal of steroid biochemistry and molecular biology, 42(5), 533-546 (1992-06-01)
The epimerization and dehydration reactions of the 17 beta-hydroxy group of anabolic 17 beta-hydroxy-17 alpha-methyl steroids have been investigated using the pyridinium salts of 17 beta-sulfate derivatives of methandienone 1, methyltestosterone 4, oxandrolone 7, mestanolone 10 and stanozolol 11 as
General and comparative endocrinology, 78(2), 218-223 (1990-05-01)
The mechanism of sex determination in channel catfish Ictalurus punctatus was evaluated by hormonal and genetic methods. Aromatizable and nonaromatizable androgens, as well as an estrogen, caused feminization in fish fed steroids for 21 days after yolk-sac absorption. The effectiveness
Journal of experimental zoology. Part A, Ecological genetics and physiology, 307(9), 527-534 (2007-08-11)
The purpose of this study was to develop a practical protocol for the production of female populations of Arctic charr (Salvelinus alpinus). Achieving this required knowledge of the timing of gonadal differentiation. Undifferentiated gonads were observed microscopically to be present
Medicine and science in sports and exercise, 25(7), 815-822 (1993-07-01)
The effects of anabolic-androgenic steroid administration and exercise training on various aspects of hepatic function were investigated in sedentary and trained (treadmill for 12 wk) male and female rats treated orally with fluoxymesterone or methylandrostanolone (2 mg.kg-1 body weight, 5
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