雌激素α、β受体在雌性大鼠眼葡萄膜组织中的表达  

Expression of estrogen receptor alpha and beta in the uvea tissue of female rats

作　　者：李联祥[1] 杨以会[1] 王秋丽[2] 金东岭[3] 高金生[3] 

机构地区：[1]河北工程大学医学院人体解剖学与组织学胚胎学教研室,基础医学实验室,河北邯郸056002 [2]邯郸市妇幼保健院新生儿科,河北邯郸056001 [3]河北工程大学医学院病理学教研室,河北邯郸056002

出　　处：《解剖学报》2010年第1期128-131,共4页Acta Anatomica Sinica

摘　　要：目的探讨雌激素α、β受体(ERα、ERβ)在雌性大鼠眼葡萄膜组织的表达。方法选择青春期SD雌性大鼠22只,采用颈椎脱臼处死大鼠,取眼球作常规石蜡包埋,连续切片,SP免疫组织化学方法显示ERα、ERβ在葡萄膜组织的表达;采用Tanaka记分法对ERα、ERβ进行定量分析,并设正常大鼠子宫作阳性对照;PBS代替一抗作阴性对照。同时采用放射免疫分析方法检测大鼠血清雌二醇的浓度。结果ERβ在虹膜基质细胞、虹膜前后两层色素上皮细胞、睫状体非色素上皮和色素上皮、脉络膜各层血管内皮的表达水平主要呈中表达或高表达;ERα则表达不明显。ERβ阳性表达率明显高于ERα,经统计学分析两者间有显著性差异(P<0.05)。ERα、ERβ免疫阳性反应物呈颗粒状,定位在细胞质或细胞核。正常大鼠血清雌二醇水平经检测含量为(22.13±3.54)ng/L。结论大鼠葡萄膜组织以ERβ表达为主,雌激素主要通过ERβ信号转导途径对这些组织的功能起调控作用。Objective To research the expression of the estrogen receptor alpha （ERα） and estrogen receptor beta （ERβ） in uvea tissues of the female rats, and to provide molecular biology data for further studies of the relation estrogen to urea diseases. Methods Twenty-two adolescent SD female rats were selected. All rats were killed by dislocation of cervical vertebra, the eyeballs were in paraffin imbedding and made to a series of sections, using immunohistochemical method ; ERα and ERβ distribution were investigated in uvea tissue of rats ; and quantitied by Tanaka scores analytical method. The uteri of rats was used as positive control and PBS as negative control. The level of estradiol in serum of the rats were examined by radioimmunoassay. Results The expression level of ERβ was moderate or higbter in stroma cell, anterior pigment epithelium as well as pasterior pigment epithelium of the iris, unpigmented epithelium, pigmented ciliary epithelium and vascular endocemet of the cboroid layers. But ERα was not obviously expressed in uvea tissues. The expression rate of ERβ was higher than ERα in these tissues（P 〈 0. 05）. Immnoreactivity positive substance was granule, which was distributed in the cytoplasm or in the nucleus. The level of estradiol in serum of the rats was （22. 13 ± 3.54）ng/L. Conclusion The expression of either ERα or ERβ in uvea tissues of rats is mainly in ERβ. The results indicate that uvea tissue is regulated directly by estrogen throught ERβ.

关 键 词：虹膜 睫状体 脉络膜 毛细血管 雌激素 受体 免疫组织化学 大鼠 

分 类 号：R335[医药卫生—人体生理学]