远端缺血预处理对大鼠肾缺血/再灌注肾功能的影响

Effect of remote ischaemic preconditioning on renal function in rats with renal ischemia reperfusion
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    摘要:

    目的 探讨远端缺血预处理(remote ischaemic preconditioning,RIPC) 对大鼠肾缺血/再灌注后肾功能的影响。方法 SPF级SD大鼠30只,随机分为肾缺血再灌注组(IR组)、远端缺血预处理组(RIPC组)和假手术对照组(S组)。IR组右肾切除,左肾缺血45min,再灌注60 min制备肾缺血再灌注模型;RIPC组分离股动脉后夹闭5min,松开动脉夹再灌注5min,反复3次,于1h后建立IR模型;S组麻醉开腹后右肾切除。各组动物于再灌注6h后处死,取血液分离血浆检测肌酐(Scr)、尿素氮(BUN)、IL-1β、TNF-α以及尿液中肾损伤分子-1(Kim-1)的含量;同时取肾组织制作病理切片,HE染色观察各组病理组织学变化。结果 IR组肾脏损伤严重,炎症明显,有肾小球肾炎表现,RIPC组肾脏损伤明显减轻。与S组相比,IR组和RIPC组血浆中BUN、Scr、IL-1β、TNF-α以及尿液中Kim-1含量均显著升高(P<0.05),但RIPC组明显低于IR组(P<0.05)。结论 远端缺血预处理可减轻肾缺血再灌注中的炎性反应,减轻肾功能障碍,具有一定的肾保护作用。

    Abstract:

    Objective To explore the Effect of remote ischaemic preconditioning on renal function in rats with renal ischemia reperfusion. Method Methods: SPF male SD rats (n=30) were randomly divided into three equal groups: sham group (group S), ischemic reperfusion group (group IR), remote ischaemic preconditioning group (group RIPC). For group IR, cutting off the right kidney, and lefting the right one ischemia for 45min, then transfusing blood for 60min. For group RIPC, occlusion femoral artery for 5min, reperfusion 5min, repeated three times, making IR models after 1h. For group S, we lift right kidneys after anesthesia and laparotomy. Blood sample was collected in 6 h to Scr,BUN,IL-1β,TNF-α and Kim-1. Histopathological changes of kidney were observed by using of pathological section and HE staining. Results: Histopathological observations of kidney shows no obvious change in kidneys of group S. Serious kidney injury was found in group IR, which showed up as obvious inflammation and glomerulonephritis, While the kidney injury was significantly alleviated in group RIPC, and no serious inflammatory response was detected. Compared to group S, levels of Scr,BUN,IL-1β,TNF-α and Kim-1 in group IR and RIPC had increased significantly (P <0.05); which had significant decreased in group group IR and RIPC (P<0.05). Conclusion RIPC can reduce inflammatory reaction, thus alleviating renal ischemia reperfusion injury and protecting kidney to some degree.

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陈克研,张毅男,卢玉平,金强,张铁铮.远端缺血预处理对大鼠肾缺血/再灌注肾功能的影响[J].中国比较医学杂志,2013,23(10).

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  • 收稿日期:2013-08-16
  • 最后修改日期:2013-08-24
  • 录用日期:2013-10-14
  • 在线发布日期: 2013-12-16
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