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缺血时间对肾脏肿瘤坏死因子-α的影响及姜黄素预处理的实验研究 被引量:2

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摘要 目的:研究不同热缺血时间大鼠肾脏的改变及肿瘤坏死因子-α(TNF-α)的变化及姜黄素预处理的影响。方法:选择不同热缺血时间点(零时、1h、4h、24h),观察缺血后光镜下肾脏组织的病理改变以及肾组织肿瘤坏死因子-α水平的变化,也测定缺血后BUN、Scr的水平。结果:随缺血时间的增加,肾脏病理改变逐渐加重。单纯肾缺血再灌注1h组,肾组织中TNF-α水平明显增高(P<0.01或0.05),随再灌注时间延长逐渐下降至假手术对照组水平;血清TNF-α在IRI各组均无显著性变化;单纯缺血组肾系数和Scr较对照组比无明显变化,仅BUN高于对照组,而R1h、R4h和R24h组肾系数、BUN和Scr水平均高于对照组,且随再灌注时间延长而显著增加(P<0.01)。姜黄素干预后,使R4h组血清BUN、Scr及肾系数也明显高于未干预组;但能使R24h组的Scr明显降低,BUN较未干预组无明显变化;血清和肾组织中TNF-α无显著性变化。结论:TNF-α在早期大鼠肾IRI中起重要作用,可能介导炎症反应,加重肾脏局部的损伤。该细胞因子在血液中和组织中的变化并不一致,因此本研究提示临床应用时不能单纯监测血液指标变化。同时说明TNF-α不是姜黄素在缺血再灌注早期加剧肾损伤或后期改善肾功能的直接因素,具体机制有待进一步研究。
出处 《中国中西医结合肾病杂志》 2012年第11期988-990,I0005,共4页 Chinese Journal of Integrated Traditional and Western Nephrology
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共引文献10

同被引文献34

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