17β-雌二醇下调MCP-1及RhoA表达发挥心血管保护作用

目的:探讨雌激素对去势雌性Sprague-Dawley大鼠单核细胞趋化因子1(MCP-1)及Ras同源基因家族成员A(Rho A)水平的调控及其机制,研究雌激素对心血管的保护作用。方法:将45只3月龄雌性Sprague-Dawley大鼠随机分为空白对照组(CON,n=10)、假手术组(SHAM,n=10)、去势对照组(OVX,n=12)和去势实验组(OVX+E2,n=13)。去势实验组给予200μg/(kg·d)17β-雌二醇灌胃,余3组给予等量生理盐水灌胃。灌胃16周后酶联免疫吸附测定(ELISA)法测定血清雌二醇(E_2)、卵泡刺激素(FSH)、MCP-1及Rho A水平;ELISA法检测...

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Published in国际生殖健康/计划生育杂志 Vol. 36; no. 5; pp. 373 - 377
Main Author 刘文华 张治芬 汤珊珊 陈临节 黄哲人 魏双双
Format Journal Article
LanguageChinese
Published 310008,杭州市妇产科医院妇产科 2017
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ISSN1674-1889
DOI10.3969/j.issn.1674-1889.2017.05.005

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Summary:目的:探讨雌激素对去势雌性Sprague-Dawley大鼠单核细胞趋化因子1(MCP-1)及Ras同源基因家族成员A(Rho A)水平的调控及其机制,研究雌激素对心血管的保护作用。方法:将45只3月龄雌性Sprague-Dawley大鼠随机分为空白对照组(CON,n=10)、假手术组(SHAM,n=10)、去势对照组(OVX,n=12)和去势实验组(OVX+E2,n=13)。去势实验组给予200μg/(kg·d)17β-雌二醇灌胃,余3组给予等量生理盐水灌胃。灌胃16周后酶联免疫吸附测定(ELISA)法测定血清雌二醇(E_2)、卵泡刺激素(FSH)、MCP-1及Rho A水平;ELISA法检测心脏组织沉默调节蛋白1(SIRT1)、腺苷酸活化蛋白激酶(AMPK)水平。免疫组织化学法检测心脏组织MCP-1及Rho A水平。结果:灌胃16周后去势实验组血清及心脏组织MCP-1、Rho A水平低于去势对照组(P〈0.05);去势实验组心脏组织匀浆SIRT1、AMPK水平高于去势对照组(P〈0.05)。结论:外源性17β-雌二醇可下调去势雌性大鼠血清及心脏组织MCP-1、Rho A表达水平,从而发挥其心血管保护作用。其可能的机制是17β-雌二醇通过上调AMPK/SIRT1调控MCP-1及Rho A的表达水平。
Bibliography:Estradiol ; Silence regulating protein 1; AMP-activated protein kinase ; Monocyte chemotactic factor 1; Ras homolog gene family, member A ; Animal experimentation
LIU Wen-hua;ZHANG Zhi-fen;TANG Shan-shan;CHEN Lin-jie;HUANG Zhe-ren;WEI Shuang-shuang(1.Department of Obstetrics and Gynecology, Hangzhou Maternity Hospital; Hangzhou 310008, China)
Objective:To observe the regulation of estrogen on the expressions of Monocyte chemotactic factor 1(MCP-1) and Ras homolog gene family member A(Rho A) in female ovariectomized Sprague-Dawley rats,so as to study the protective effect of estrogen on cardiovascular system. Methods: Forty five female rats aged 12 weeks were randomly divided into five groups: the blank control group(CON, n =10), the ovariectomized group(OVX, n =12), the estrogen-treated group with 17β-estradiol(OVX +E_2, n =13) and the sham-operated group(SHAM, n=10). 200 μg/(kg·d) 17β-estradiol was administered in the OVX+ E_2 group for 16 weeks, the other three groups were given equal normal saline. After 16
ISSN:1674-1889
DOI:10.3969/j.issn.1674-1889.2017.05.005