Title : Interleukin-1 inhibits Leydig cell steroidogenesis primarily by decreasing 17 alpha-hydroxylase/C17-20 lyase cytochrome P450 expression.

Pub. Date : 1992 Nov

PMID : 1425417






4 Functional Relationships(s)
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1 Treatment with 8-Br-cAMP plus 0.2 and 2 U/ml IL-1 decreased testosterone production to 63 +/- 14% and 41 +/- 19%, respectively, while 5, 10, and 20 U/ml IL-1 decreased testosterone production to less than 5% that of cells treated with 8-Br-cAMP alone. 8-Bromo Cyclic Adenosine Monophosphate interleukin 1 complex Mus musculus
2 Treatment with 8-Br-cAMP plus 0.2 and 2 U/ml IL-1 decreased testosterone production to 63 +/- 14% and 41 +/- 19%, respectively, while 5, 10, and 20 U/ml IL-1 decreased testosterone production to less than 5% that of cells treated with 8-Br-cAMP alone. 8-Bromo Cyclic Adenosine Monophosphate interleukin 1 complex Mus musculus
3 IL-1 caused a dose-dependent decrease in 8-Br-cAMP-stimulated P450c17 levels (0.2 U/ml by 31 +/- 9%, 2 U/ml by 82 +/- 12%, and 10 or 20 U/ml by 100% compared to that in cells treated with 8-Br-cAMP alone). 8-Bromo Cyclic Adenosine Monophosphate interleukin 1 complex Mus musculus
4 Within 12 h after the removal of IL-1, P450c17 mRNA was restored to 24%; after 24 h, to 36%; after 36 h, to 65%; and after 48 h, to 84% of that with 8-Br-cAMP alone. 8-Bromo Cyclic Adenosine Monophosphate interleukin 1 complex Mus musculus