| Literature DB >> 2954550 |
H Matsubara, Y Hirata, H Yoshimi, S Takata, Y Takagi, T Iida, Y Yamane, Y Umeda, M Nishikawa, M Inada.
Abstract
The in vitro effects of various steroid and thyroid hormones on synthesis of rat atrial natriuretic peptide (rANP) were studied using new-born rat atrial myocytes in culture. Dexamethasone, testosterone and triiodothyronine markedly stimulated both synthesis and secretion of immunoreactive (IR)-rANP with the same peak after 4-day-culture. Dexamethasone and testosterone dose-dependently (10(-7)-10(-6) M) stimulated synthesis of IR-rANP and were the most potent among various steroids tested. Triiodothyronine (T3) also stimulated synthesis of IR-rANP in a dose-dependent manner (10(-8)-10(-7) M), of which effect was more potent than that of tetraiodothyronine, whereas reverse T3 was ineffective. The present study clearly shows that glucocorticoids, androgens and thyroid hormones directly stimulate synthesis of ANP by atrial myocytes and suggests that ANP may play a potential role in mediating and/or modulating the biological effects by these hormones in the cardiovascular system.Entities:
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Year: 1987 PMID： 2954550 DOI： 10.1016/0006-291x(87)91326-x
Source DB: PubMed Journal: Biochem Biophys Res Commun ISSN： 0006-291X Impact factor: 3.575