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- W2074057319 abstract "Previous studies have shown that androgens have direct inhibitory effects on steroidogenesis in active Leydig cells. It is not clear what effect androgens have on inactive Leydig cell either through direct action on the cell itself or indirectly through stimulation of Sertoli cell activity. The hpg mouse has undetectable levels of circulating gonadotrophins and the gonads fail to develop post-natally. The effect of androgen treatment on testicular steroidogenesis and morphology was examined in these animals. Treatment with testosterone propionate for two weeks significantly increased testicular and seminal vesicle weight. Seminiferous tubules showed marked development in androgen-treated animals, indicating increased Sertoli cell activity, but the abnormal Leydig cell morphology of the hpg testis was unchanged. Androgen production per testis in vitro was low in control hpg animals and remained unaffected by treatment with androgen. Similarly, the pattern of [3H]pregnenolone metabolism was not significantly affected by androgen treatment. The androgen content of the testis was higher in androgen-treated animals but this could be accounted for by uptake of administered steroid from the circulation. It is concluded that androgens have no direct trophic effect on Leydig cells and that stimulation of Sertoli cell activity is not, in itself, sufficient to affect Leydig cell function." @default.
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- W2074057319 date "1990-05-01" @default.
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- W2074057319 title "Effect of testosterone on testicular steroidogenesis in the hypogonadal (hpg) mouse" @default.
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- W2074057319 doi "https://doi.org/10.1016/0022-4731(90)90315-j" @default.
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