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The significance of TNF-α, IL-6 and MCP-1 expression following renal ischemia reperfusion injury

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Author:
No author available
Journal Title:
China Journal of Modern Medicine
Issue:
21
DOI:
10.3969/j.issn.1005-8982.2012.21.004
Key Word:
肾缺血-再灌注损伤;炎症过程;SD大鼠

Abstract: 目的 观察肾缺血-再灌注损伤后TNF-α、IL-6和MCP-1的表达,研究肾IRI的炎症机制.方法 将健康雄性SD( Sprasue-Dawley)大鼠随机分为假手术组(sham组)和缺血-再灌注组(I/R组),通过摘除右肾,夹闭左肾蒂60 min的方法建立肾I/R大鼠模型.Sham组大鼠摘除右肾后未夹闭左肾蒂,组内分为I/R后24h、48h及72h 3个时间点,分别在上述时间点处死大鼠;全自动生化仪检测两组大鼠肾功能BUN和Scr水平;ELISA法检测两组大鼠血清TNF- α、IL-6水平的变化,免疫荧光法和western blot法肾组织MCP-1蛋白的变化.结果 肾IRI诱导血清BUN、Scr、TNF-α及IL-6水平显著增高,肾小管上皮细胞MCP-1蛋白表达显著上调,均于再灌注后24 h达高峰,之后逐渐下降,与sham组大鼠24 h、48 h及72 h同时间点相比较,差异均具有显著性(P<0.01).结论 肾IRI后存在炎症过程,且肾小管上皮细胞可转化为炎症细胞.

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