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中华肝脏外科手术学电子杂志 ›› 2014, Vol. 03 ›› Issue (06) : 371 -374. doi: 10.3877/cma.j.issn.2095-3232.2014.06.010

所属专题: 文献

基础研究

缺血后处理对肝硬化大鼠肝脏缺血-再灌注损伤保护作用的免疫机制
吉斐1, 华赟鹏1,(), 简佩恩1, 付顺军1, 赵坤1, 赖佳明1, 李绍强1   
  1. 1. 510080 广州,中山大学附属第一医院肝胆外科
  • 收稿日期:2014-10-25 出版日期:2014-12-10
  • 通信作者: 华赟鹏
  • 基金资助:
    国家自然科学基金(81201918); 广东省自然科学基金(10151008901000113)

Immunity mechanism of ischemia postconditioning in preventing from hepatic ischemia-reperfusion injury in liver cirrhotic rats

Fei Ji1, Yunpeng Hua1,(), Peien Jian1, Shunjun Fu1, Kun Zhao1, Jiaming Lai1, Shaoqiang Li1   

  1. 1. Department of Hepatobiliary Surgery, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
  • Received:2014-10-25 Published:2014-12-10
  • Corresponding author: Yunpeng Hua
  • About author:
    Corresponding author: Hua Yunpeng, Email:
引用本文:

吉斐, 华赟鹏, 简佩恩, 付顺军, 赵坤, 赖佳明, 李绍强. 缺血后处理对肝硬化大鼠肝脏缺血-再灌注损伤保护作用的免疫机制[J]. 中华肝脏外科手术学电子杂志, 2014, 03(06): 371-374.

Fei Ji, Yunpeng Hua, Peien Jian, Shunjun Fu, Kun Zhao, Jiaming Lai, Shaoqiang Li. Immunity mechanism of ischemia postconditioning in preventing from hepatic ischemia-reperfusion injury in liver cirrhotic rats[J]. Chinese Journal of Hepatic Surgery(Electronic Edition), 2014, 03(06): 371-374.

目的

探讨缺血后处理(IPO)对肝硬化大鼠肝脏缺血-再灌注损伤(IRI)的保护作用及其免疫机制。

方法

按随机数字表法将30只肝硬化模型SD大鼠随机分为IPO组、IRI组和单纯肝切除组(肝切组),各10只。IPO组先切除40%肝脏,阻断第一肝门20 min,然后反复缺血-再灌注3次,最后持续再灌注;IRI组,切除40%肝脏,阻断第一肝门20 min后持续再灌注;肝切组切除40%肝脏。分别于术后6、24 h抽取大鼠下腔静脉血,检测ALT、AST、分化群(CD)4+、CD8+、调节性T细胞(Treg)百分率、白细胞介素(IL)-4、IL-10水平。3组比较采用单因素方差分析,两两比较采用LSD-t检验。

结果

恢复灌注6 h后,IPO组的ALT、AST分别为(1 623±378)、(1 993±469)U/L,IRI组相应为(2 690±549)、(3 020±577)U/L,IPO组ALT、AST明显低于IRI组(LSD-t= -4.21,-3.72;P<0.05)。恢复灌注24 h后,IPO组的ALT、AST分别为(307±76)、(555±137)U/L,IRI组相应为(518±105)、(1 050±355) U/L,IPO组ALT、AST亦明显低于IRI组(LSD-t=-4.06,-3.37;P<0.05)。恢复灌注6 h后,IPO组CD4+、CD8+、CD4+/ CD8+比值、Treg、IL-4、IL-10分别为(57±5)%、(25±3)%、2.3±0.5、(8.9±0.4)%、(1.27±0.25)mg/L、(0.61±0.03)mg/L,IRI组相应为(52±6)%、(12±3)%、4.5±0.8、(7.3±0.3)%、(0.66±0.11)mg/L、(0.34±0.06)mg/L,IPO组CD8+、Treg、IL-4、IL-10较IRI组明显升高,CD4+/ CD8+比值明显降低(LSD-t= 7.74,6.67,5.52,9.31,-6.69;P<0.05)。

结论

IPO可能通过减轻免疫损伤发挥对肝硬化大鼠肝脏IRI的保护作用。

Objective

To investigate the protective effects and its mechanism of ischemia postconditioning (IPO) in hepatic ischemia-reperfusion injury (IRI) in liver cirrhotic rats.

Methods

Thirty liver cirrhotic Sprague-Dawley (SD) rats were randomly divided into three groups according to the random table methods: ischemia postconditioning (IPO) group, IRI group, and pure hepatectomy (PH) group with 10 rats in each group. Rats in IPO group underwent partial hepatectomy (40%), and the first portal was occluded for 20 min, then 3 times of ischemia-reperfusion were performed, and finally continuous reperfusion. Rats in IRI group underwent partial hepatectomy (40%), and the first portal was occluded for 20 min, then continuous reperfusion was performed. Rats in PH group underwent partial hepatectomy (40%) only. Inferior vena cava blood was collected at 6, 24 h after operation. Levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), proportion of cluster of differentiation (CD) 4+, CD8+, regulatory T cells (Treg) and levels of interleukin (IL)-4, IL-10 were tested. Comparison of three groups was conducted by one way analysis of variance and pairwise comparison by LSD-t test.

Results

After 6 h reperfusion, levels of ALT and AST in IPO group [(1 623±378) , (1 993±469) U/L] were significantly lower than those in IRI group [(2 690±549) , (3 020±577) U/L] (LSD-t=-4.21, -3.72; P<0.05). After 24 h reperfusion, levels of ALT and AST in IPO group [(307±76) , (555±137) U/L] were still significantly lower than those in IRI group [(518±105) , (1 050±355) U/L] (LSD-t=-4.06, -3.37; P<0.05). After 6 h reperfusion, proportion of CD4+, CD8+, CD4+/CD8+ ratio, Treg, and levels of IL-4, IL-10 in IPO group were (57±5) %, (25±3) %, 2.3±0.5, (8.9±0.4) %, (1.27±0.25) mg/L, (0.61±0.03) mg/L, respectively. While in IRI group, they were (52±6)%, (12±3) %, 4.5±0.8, (7.3±0.3) %, (0.66±0.11) mg/L, (0.34±0.06) mg/L, respectively. In IPO group, CD8+, Treg, IL-4 and IL-10 increased significantly, while CD4+/CD8+ ratio decreased significantly, compared with those in IRI group (LSD-t= 7.74, 6.67, 5.52, 9.31, -6.69; P<0.05).

Conclusion

IPO can prevent from hepatic IRI injury in liver cirrhotic rats through decreasing the immune injury.

表1 IPO组、IRI组和肝切组各时间点血ALT、AST的变化(U/L,±s
表2 IPO组、IRI组和肝切组各时间点T淋巴细胞亚群和细胞因子的变化(±s
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