Dual effects of daidzein, a soy isoflavone, on catecholamine synthesis and secretion in cultured bovine adrenal medullary cells.

Dual effects of daidzein, a soy isoflavone, on catecholamine synthesis and secretion in cultured bovine adrenal medullary cells. Research Abstract Details 

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Dual effects of daidzein, a soy isoflavone, on catecholamine synthesis and secretion in cultured bovine adrenal medullary cells. Abstract Text:

Minhui Liu,Nobuyuki Yanagihara,Yumiko Toyohira,Masato Tsutsui,Susume Ueno,Yuko Shinohara,

We recently demonstrated the occurrence and functional roles of plasma membrane estrogen receptors in cultured bovine adrenal medullary cells. Here we report the effects of daidzein, a phytoestrogen of soybeans, on catecholamine synthesis and secretion in the cells. Incubation of cells with daidzein for 20 min increased the synthesis of (14)C-catecholamines from [(14)C]tyrosine but not [(14)C]dihydroxyphenylalanine, in a concentration-dependent manner (10-1000 nm). The stimulatory effect of daidzein on (14)C-catecholamine synthesis was not inhibited by ICI182,780, a classical estrogen receptor inhibitor. Acetylcholine, a physiological secretagogue, stimulated the synthesis of (14)C-catecholamines, which was suppressed by daidzein at 1 mum. Daidzein at high concentrations (1-100 microm) suppressed catecholamine secretion induced by acetylcholine. Furthermore, daidzein (10-1000 nm) inhibited the specific binding of [(3)H]17beta-estradiol to plasma membranes isolated from bovine adrenal medulla. The present findings suggest that daidzein at low concentrations stimulates catecholamine synthesis through plasma membrane estrogen receptors but at high concentrations inhibits catecholamine synthesis and secretion induced by acetylcholine in bovine adrenal medulla. The latter effect of daidzein may be a beneficial action on the cardiovascular system.

Dual effects of daidzein, a soy isoflavone, on catecholamine synthesis and secretion in cultured bovine adrenal medullary cells. Publishing Authors By Initials

M Liu,N Yanagihara,Y Toyohira,M Tsutsui,S Ueno,Y Shinohara,

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Dual effects of daidzein, a soy isoflavone, on catecholamine synthesis and secretion in cultured bovine adrenal medullary cells. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Endocrinology

VOLUME: 148

Page Numbers: 5348-54

Journal Abbreviation: Endocrinology

ISSN: 0013-7227

DAY: 23

MONTH: 08

YEAR: 2007

Dual effects of daidzein, a soy isoflavone, on catecholamine synthesis and secretion in cultured bovine adrenal medullary cells. Information

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LANGUAGE: eng

NlmUniqueID: 375040

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Grant and Affiliation Information for Dual effects of daidzein, a soy isoflavone, on catecholamine synthesis and secretion in cultured bovine adrenal medullary cells.

AFFILIATION: Department of Pharmacology, University of Occupational and Environmental Health, School of Medicine, 1-1, Iseigaoka, Kitakyushu, Japan.

Country: United States

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MEDLINETA: Endocrinology

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