Gender differences in the regulation of blood pressure

被引:937
作者
Reckelhoff, JF
机构
[1] Univ Mississippi, Med Ctr, Dept Physiol & Biophys, Jackson, MS 39216 USA
[2] Univ Mississippi, Med Ctr, Ctr Excellence Cardiovasc Renal Res, Jackson, MS 39216 USA
关键词
sex characteristics; hypertension; angiotensin II; nitric oxide; oxidative stress;
D O I
10.1161/01.HYP.37.5.1199
中图分类号
R6 [外科学];
学科分类号
1002 ; 100210 ;
摘要
Men are at greater risk for cardiovascular and renal disease than are age-matched, premenopausal women. Recent studies using the technique of 24-hour ambulatory blood pressure monitoring have shown that blood pressure is higher in men than in women at similar ages. After menopause, however, blood pressure increases in women to levels even higher than in men. Hormone replacement therapy in most cases does not significantly reduce blood pressure in postmenopausal women, suggesting that the loss of estrogens may not be the only component involved in the higher blood pressure in women after menopause. In contrast, androgens may decrease only slightly, if at all, in postmenopausal women. In this review the possible mechanisms by which androgens may increase blood pressure are discussed. Findings in animal studies show that there is a blunting of the pressure-natriuresis relationship in male spontaneously hypertensive rats and in ovariectomized female spontaneously hypertensive rats treated chronically with testosterone. The key factor in controlling the pressure-natriuresis relationship is the renin-angiotensin system (RAS). The possibility that androgens increase blood pressure via the RAS is explored, and the possibility that the RAS also promotes oxidative stress leading to production of vasoconstrictor substances and reduction in nitric oxide availability is proposed.
引用
收藏
页码:1199 / 1208
页数:10
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