Title : Effects of testosterone and 17-beta-estradiol on TNF-alpha-induced E-selectin and VCAM-1 expression in endothelial cells. Analysis of the underlying receptor pathways.

Pub. Date : 2002 May 24

PMID : 12020745






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1 Effects of testosterone and 17-beta-estradiol on TNF-alpha-induced E-selectin and VCAM-1 expression in endothelial cells. Testosterone tumor necrosis factor Homo sapiens
2 This study investigated the effects of testosterone and 17-beta-estradiol on tumor necrosis factor-alpha (TNF-alpha)-induced endothelial expression of E-selectin and vascular cell adhesion molecule-1 (VCAM-1) and the potential roles of hormone receptors involved in these actions. Testosterone tumor necrosis factor Homo sapiens
3 This study investigated the effects of testosterone and 17-beta-estradiol on tumor necrosis factor-alpha (TNF-alpha)-induced endothelial expression of E-selectin and vascular cell adhesion molecule-1 (VCAM-1) and the potential roles of hormone receptors involved in these actions. Testosterone tumor necrosis factor Homo sapiens
4 As shown by Western blot analysis, co-administration with testosterone or 17-beta-estradiol increased the expression of E-selectin and VCAM-1 induced by TNF-alpha at 6 h and 3 h, respectively. Testosterone tumor necrosis factor Homo sapiens
5 Similarly, RT-PCR analysis revealed a significant increase in the amount of mRNA for E-selectin and VCAM-1 after co-administration with testosterone or 17-beta-estradiol in TNF-alpha-stimulated HUVEC. Testosterone tumor necrosis factor Homo sapiens
6 Flow cytometric analysis showed that preincubation with androgen receptor antagonist cyproterone and estrogen receptor antagonist tamoxifen completely abrogated the upregulating effects of testosterone and 17-beta-estradiol on TNF-alpha-induced E-selectin and VCAM-1 expression, respectively. Testosterone tumor necrosis factor Homo sapiens
7 The data indicate that both testosterone and 17-beta-estradiol increase TNF-alpha-induced E-selectin and VCAM-1 expression in endothelial cells via a receptor-mediated system, and expression of TNF receptors are not changed in these actions. Testosterone tumor necrosis factor Homo sapiens