Biological activity of hormonally active and non-active androgen derivatives
Androgen derivatives appeared to have different biological activities in vivo and in vitro. Testosterone-17-isobutyrate given in three doses of 50 or 200 μ g increased significantly the weight of seminal vesicles and reduced thymus weight in castrated males, whereas testosterone-17-hemisuccinate, te...
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Veröffentlicht in: | International journal of immunopharmacology 1982, Vol.4 (5), p.469-474 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Androgen derivatives appeared to have different biological activities
in vivo and
in vitro. Testosterone-17-isobutyrate given in three doses of 50 or 200 μ g increased significantly the weight of seminal vesicles and reduced thymus weight in castrated males, whereas testosterone-17-hemisuccinate, testosterone-
D-β-glucoside and testosterone-3-(
O-carboxymethyl)-oxime had no such effects. Similarly, ten 1-mg doses of testosterone-17-isobutyrate, unlike testosterone-17-hemisuccinate, resulted in a marked reduction of thymus weight in non-castrated males and in a significant inhibitory effect on the activity of spermatogenesis. On the other hand, all three androgen derivatives, which had appeared inactive
in vivo, had similar effects
in vitro (as had active testosterone) as demonstrated by inhibition of Concanavalin A-induced lymphocyte activation expressed by
14C thymidine incorporation and inhibition of cell agglutination.
These results seem to suggest that as for the regulation of androgen-dependent organs and functions (such as the size of seminal vesicles, activity of spermatogenesis, thymus size), hormonally active androgens are also involved in certain immunosuppressive effects
in vivo. On the other hand,
in vitro immunological effects are produced by both hormonally active and non-active androgen derivatives as well as by other steroid hormones, the common denominator being the steroid structure. |
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ISSN: | 0192-0561 1879-3495 |
DOI: | 10.1016/0192-0561(82)90022-4 |