Abstract：
:Castration had no effect on baseline BP and vascular sensitivity to acetylcholine and deficiency of nitric oxide and prostacyclin in normotensive specimens. Castration of hypertensive specimens decreased BP and potentiated the hypotensive effects of acetylcholine, but did not modulate vascular sensitivity to the blockade of nitric oxide and prostacyclin synthesis. The removal of the testicles abolished the pressor influence of glybenclamide in hypertensive and, particularly, in normotensive males. These data indicate that the non-endothelial vascular effects of androgens (i.e., stimulation of K(ATP) channels) predominate under normal conditions. The activating effects of androgens on K(ATP) channels decrease during hypertension, which is accompanied by inhibition of endothelium-dependent vasorelaxation. The production of nitric oxide and prostacyclin remains unchanged under these conditions. Our results suggest that endothelium-derived hyperpolarizing factor is involved in these processes.
journal_name
Bull Exp Biol Medjournal_title
Bulletin of experimental biology and medicineauthors
Semyachkina-Glushkovskaya OV,Anishchenko TG,Kuznetsova AS,Kuznetsova YV,Bibikova OA,Sjestnova AAdoi
10.1007/s10517-012-1673-0subject
Has Abstractpub_date
2012-06-01 00:00:00pages
190-3issue
2eissn
0007-4888issn
1573-8221journal_volume
153pub_type
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