Title : The role of tumor necrosis factor-alpha in the regulation of mouse Leydig cell steroidogenesis.

Pub. Date : 1993 Jun

PMID : 8504748






5 Functional Relationships(s)
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1 Treatment of Leydig cells with 0.1, 1.0, and 10.0 ng/ml TNF alpha inhibited basal testosterone secretion by 20 +/- 5.0%, 61.1 +/- 6.6%, and 60.7 +/- 5.8% of control, respectively, but had no effects on basal P450scc messenger RNA (mRNA) or protein levels. Testosterone tumor necrosis factor Mus musculus
2 TNF alpha caused a significant and dose-dependent inhibition of 8-Br-cAMP-stimulated testosterone secretion by 35.9 +/- 9.9%, 90.9 +/- 1.7%, and 96.9 +/- 1.4% with 0.1, 1.0, and 10.0 ng/ml TNF alpha, respectively. Testosterone tumor necrosis factor Mus musculus
3 TNF alpha caused a significant and dose-dependent inhibition of 8-Br-cAMP-stimulated testosterone secretion by 35.9 +/- 9.9%, 90.9 +/- 1.7%, and 96.9 +/- 1.4% with 0.1, 1.0, and 10.0 ng/ml TNF alpha, respectively. Testosterone tumor necrosis factor Mus musculus
4 TNF alpha-mediated inhibition of 8-Br-cAMP-stimulated testosterone secretion from Leydig cells was also reversible. Testosterone tumor necrosis factor Mus musculus
5 These data demonstrate that TNF alpha inhibits both basal and 8-Br-cAMP-stimulated testosterone secretion from Leydig cells in a dose-dependent manner. Testosterone tumor necrosis factor Mus musculus