Estrogen modulates responses of atherosclerotic coronary arteries.

Estrogen modulates responses of atherosclerotic coronary arteries.
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雌激素调节动脉粥样硬化冠状动脉的反应。

DOI:
10.1161/01.cir.81.5.1680
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发表时间:
1990
期刊:
影响因子:
37.8
通讯作者:
Klopfenstein,HS
Klopfenstein,HS
中科院分区:
医学1区
文献类型:
--
作者:
Williams,JK;Adams,MR;Klopfenstein,HS

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虽然有证据表明雌激素替代疗法可以降低冠心病的风险,但其机制尚不清楚。雌激素替代疗法可能1)抑制动脉粥样硬化斑块的生长,2)通过调节动脉粥样硬化冠状动脉中的血管舒缩来降低短暂性心肌缺血和心肌梗死的发生率。使用定量冠状动脉造影术,我们确定了卵巢切除食蟹猴动脉粥样硬化冠状动脉的血管反应; 6个给予生理雌激素“替代”皮下植入物,6个没有。在雌激素缺乏的猴子中,冠状动脉内输注内皮依赖性扩张剂乙酰胆碱(1 × 10(-6)M)引起冠状动脉反常收缩(从1.2 +/- 0.2到0.6 +/- 0.1 mm,p <0.05)。然而,在雌激素治疗的猴子中,乙酰胆碱倾向于最小程度地扩张左回旋冠状动脉(从1.2 +/- 0.2到1.5 +/- 0.2 mm,p大于0.2)。虽然雌激素替代治疗减少了冠状动脉斑块的程度,改变血管舒缩与斑块的程度无关。我们的结论是雌激素调节猴冠状动脉粥样硬化的血管运动,并推测雌激素调节的冠状动脉粥样硬化的收缩反应可能会降低绝经后妇女冠心病的发病率。
Although evidence indicates that estrogen replacement therapy reduces risk of coronary heart disease, the mechanism remains unknown. Among the possibilities are that estrogen replacement therapy may 1) inhibit growth of atherosclerotic plaque and 2) decrease the prevalence of transient myocardial ischemia and myocardial infarction by modulating vasomotion in atherosclerotic coronary arteries. Using quantitative coronary angiography, we determined vasomotor responses of atherosclerotic coronary arteries in ovariectomized cynomolgus monkeys; six were given physiological estrogen "replacement" by subcutaneous implants, and six were not. Intracoronary infusion of the endothelium-dependent dilator acetylcholine (1 X 10(-6) M) caused paradoxical constriction of coronary arteries (from 1.2 +/- 0.2 to 0.6 +/- 0.1 mm, p less than 0.05) in the estrogen-deficient monkeys. However, acetylcholine tended to minimally dilate the left circumflex coronary artery in estrogen-treated monkeys (from 1.2 +/- 0.2 to 1.5 +/- 0.2 mm, p greater than 0.2). Although estrogen replacement therapy reduced plaque extent in coronary arteries, altered vasomotion was not related to plaque extent. We conclude that estrogen modulates vasomotion of atherosclerotic coronary arteries of monkeys and speculate that estrogen-modulated constrictor responses of atherosclerotic coronary arteries may reduce the incidence of coronary heart disease in postmenopausal women.
人类心脏和大血管中的黄体酮受体。
DOI: --
发表时间: 1988
期刊: Laboratory investigation; a journal of technical methods and pathology
影响因子: --
作者:
Ingegno,MD;Money,SR;Thelmo,W;Greene,GL;Davidian,M;Jaffe,BM;Pertschuk,LP
通讯作者: Pertschuk,LP
不同内分泌状态下猴垂体前叶的多巴胺受体。
DOI: --
发表时间: 1983
期刊: Endocrinology
影响因子: 4.8
作者:
M. Cronin;D. Koritnik
通讯作者: D. Koritnik
DOI: 10.1056/nejm198610233151702
发表时间: 1986-10-23
影响因子: 158.5
作者:
LUDMER, PL;SELWYN, AP;GANZ, P
通讯作者: GANZ, P
内皮和血管平滑肌的反应性。
DOI: --
发表时间: 1987
期刊: Journal of Hypertension - Supplement
影响因子: --
作者:
P. Vanhoutte
通讯作者: P. Vanhoutte
绝经后雌激素治疗对动脉硬化性血管疾病发病率的影响
DOI: --
发表时间: 1988
影响因子: 7.2
作者:
RH Knopp
通讯作者: RH Knopp