雌激素对大鼠肾缺血再灌注损伤后肾叶间动脉舒缩功能及Cx43表达的影响

目的 研究雌激素(estrogen,E2)对大鼠肾缺血再灌注损伤后肾叶间动脉缝隙连接蛋白43(connexin43,Cx43)表达的影响。方法 建立SD大鼠肾缺血再灌注损伤模型,随机分为正常组、假手术组、缺血再灌注损伤组和E2干预组,于缺血再灌注损伤后24h检测肾功能变化;肾组织切片HE染色行Paller评分,量化肾损害程度。运用压力肌动技术检测各组大鼠肾叶间动脉的舒缩功能。免疫荧光技术、qRT-PCR及Western-blot检测各组大鼠肾叶间动脉Cx43表达的差异。结果 E2能明显降低肾缺血再灌注损伤大鼠血清中血清肌酐(Cr)和尿素氮(BUN)水平,差异有统计学意义(P〈0.05),且能显...

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Published in西安交通大学学报(医学版) Vol. 38; no. 4; pp. 479 - 486
Main Author 冀伟 王卫民 常越辰 王洋 张亮 马克涛 司军强 李丽 李应龙
Format Journal Article
LanguageChinese
Published 石河子大学医学院生理学教研室,新疆石河子,832002%石河子大学医学院第一附属医院泌尿外科,新疆石河子,832000 2017
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ISSN1671-8259
DOI10.7652/jdyxb201704003

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Summary:目的 研究雌激素(estrogen,E2)对大鼠肾缺血再灌注损伤后肾叶间动脉缝隙连接蛋白43(connexin43,Cx43)表达的影响。方法 建立SD大鼠肾缺血再灌注损伤模型,随机分为正常组、假手术组、缺血再灌注损伤组和E2干预组,于缺血再灌注损伤后24h检测肾功能变化;肾组织切片HE染色行Paller评分,量化肾损害程度。运用压力肌动技术检测各组大鼠肾叶间动脉的舒缩功能。免疫荧光技术、qRT-PCR及Western-blot检测各组大鼠肾叶间动脉Cx43表达的差异。结果 E2能明显降低肾缺血再灌注损伤大鼠血清中血清肌酐(Cr)和尿素氮(BUN)水平,差异有统计学意义(P〈0.05),且能显著改善肾组织损害程度。肾缺血再灌注损伤后肾叶间动脉收缩率(24.80±3.70)%,给予E2干预后肾叶间动脉收缩率为(41.60±3.50)%,明显高于缺血再灌注损伤组,差异有统计学意义(P〈0.05)。E2干预组肾叶间动脉上Cx43蛋白的表达水平明显低于缺血再灌注损伤组(P〈0.01)。结论 E2能够下调缺血再灌注损伤后肾叶间动脉平滑肌细胞Cx43蛋白的表达,抑制缝隙连接(GJ)功能,从而降低血管紧张度,促进血管舒张,有效减轻肾缺血再灌注损伤,改善肾功能。
Bibliography:JI Wei1 , WANG Wei-min2 , CHANG Yue-chen1 MA Ke-tao1 , SI Jun-qiang1 , LI , WANG Yang1 , ZHANG Liang1 , Li1 , LI Ying-long2 (1. Department of Physiology, Medical School of Shihezi University, Shihezi 832002; 2. Department of Urology, the First Affiliated Hospital of Medical School of Shihezi University, Shihezi 832002, China)
estrogen; renal ischemia-reperfusion injury; renal interlobar artery (RIA); gap junction; Cx43
Objective To investigate the effect of estrogen (E2) on the connexin43 (Cx43) expression of renal interlobar arteries after renal ischemia-reperfusion injury (I/R). Methods The experiment was carried out in vivo using an SD rat I/R model. SD rats were randomly divided into normal group, sham-operation group, I/R group, and estrogen-intervention group. The functional changes of the kidney were analyzed after 24 hours of I/R; nephridial tissue section was stained by hematoxylin-eosin (HE), and Puller scores were used to evaluate the degree of kidney damage. Pressure myography was utilized to detect
ISSN:1671-8259
DOI:10.7652/jdyxb201704003