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find Author "李济宇" 2 results
  • The Function of Kupffer Cell for The Ischemia Reperfusion Injury after Liver’s Transplantation

    Objective To summarize the function of Kupffer cell for the ischemia reperfusion injury after liver’s transplatation. Methods The literatures which about the function of Kupffer cell for the ischemia reperfusion injury after liver’s transplatation were reviewed. Results Kupffer cells are the resident macrophages of the liver, which can be activated to generate a range of inflammatory mediators, including cytokines, reactive oxygen intermediates, chemokines, and other factors to startup the ischemia reperfusion injury (IRI), and to cause the liver graft dysfunction. On the other hand, Kupffer cells can protect the ischemia reperfusion injury by release NO and HO-1. The CO, which is the byproduct of heme degradation by the heme oxygenases (HO-1),has the same function for IRI. Conclusions The Kupffer cells have bidirectional function for the ischemia reperfusion injury of liver’s transpatation. Thus, how to decrease the harmful factors and up-regulate the beneficial substances by Kupffer cells will be the key points in preventing IRI after liver transplantation in future.

    Release date:2016-09-08 10:36 Export PDF Favorites Scan
  • 大鼠自体静脉移植后内膜增生中Ⅰ、Ⅲ型前胶原mRNA及其蛋白的早期表达

    目的 探讨静脉移植后内膜增生早期的发生机制.方法 采用免疫组织化学、核酸原位杂交等方法,对大鼠静脉移植后7天、14天、28天和42天内膜增生中的Ⅰ型、Ⅲ型[α1(Ⅰ)、α1(Ⅲ)]前胶原Mrna及Ⅰ型、Ⅲ型胶原蛋白的表达进行定位、半定量观察.结果 与组织修复相关的胶原合成于术后7天出现,术后14天消失.术后14天起,α1(Ⅰ)、α1(Ⅲ)前胶原Mrna开始大量在增生内膜的平滑肌细胞中表达,并于术后28天达高峰(Plt;0.05),与相应胶原的表达呈同步增长.结论 静脉移植后7天Ⅰ型、Ⅲ型胶原即开始在内膜增生中的平滑肌细胞内转录及合成,且与平滑肌细胞的增殖无关.提示防治静脉移植后内膜增生至少应从术后14天开始,并应包括抑制细胞增殖及胶原合成两个方面.

    Release date:2016-08-30 06:35 Export PDF Favorites Scan
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