基础医学与临床 ›› 2010, Vol. 30 ›› Issue (2): 170-174.

• 研究论文 • 上一篇    下一篇

脂联素及其受体在酒精性肝病大鼠肝组织中的表达下降

王玮 周俊英 赵彩彦 王亚东   

  1. 河北医科大学第三医院感染科 河北医科大学第三医院感染科 河北医科大学第三医院感染科 河北医科大学第三医院感染科
  • 收稿日期:2009-04-16 修回日期:2009-06-29 出版日期:2010-02-05 发布日期:2010-02-05
  • 通讯作者: 周俊英

Decreased expression of adiponectin and receptor in rats with alcoholic liver disease

Wei WANG, Jun-ying ZHOU, Cai-yan ZHAO, Ya-dong WANG   

  1. Dept of Infection, the Third Hospital; Hebei Medical University Dept of Infection, the Third Hospital; Hebei Medical University Department of infectious disease, the Third Hospital of HeBei Medical University Department of infectious disease, the Third Hospital of HeBei Medical University
  • Received:2009-04-16 Revised:2009-06-29 Online:2010-02-05 Published:2010-02-05
  • Contact: Jun-ying ZHOU,

摘要: 目的 探讨脂联素(Adip)及其受体1和2(AdipoR1,AdipoR2)在酒精性肝病(ALD)发病过程中的表达及意义。方法 Wistar大鼠分为对照组和模型组,给模型组大鼠逐渐增加酒精浓度和剂量(30%~60%, 5~9g/kg)灌胃,分别于4、8、12和16周末随机分批处死,制备10%的肝匀浆,用比色法检测肝组织三酰甘油(TG); 酶联免疫吸附法(ELISA)测定血清中TNFα 和Adip含量;用RT-PCR和Western blot法观察肝组织Adip、AdipoR1和AdipoR2 mRNA及蛋白表达。结果 成功制造酒精性肝病大鼠模型,随着时间的延长血清TNFα和肝匀浆TG含量增高,血清Adip含量逐渐减少;肝组织Adip和AdipoR2 mRNA 和蛋白表达量逐渐减弱而AdipoR1 无明显变化,血清Adip和肝组织AdipoR2蛋白表达量与血清TNF-α和肝匀浆TG呈负相关(P <0.01),血清Adipo检测水平与其肝组织蛋白表达量间呈正相关(P <0.01)。结论Adip及其AdipoR2在ALD模型大鼠肝组织表达减弱与肝细胞脂肪变和肝脏炎症反应密切相关。

Abstract: Objectives To investigate the expression and significance of adiponectin(Adip) and the it's receptor 1,2(AdipoR1, AdipoR2) in the pathogenesis of alcoholic liver disease(ALD). Methods 50 male Wistar rats were acclimatized for 7 days and then 10 rats were randomly assigned to the normal control group. Others were to develop the rats model of ALD by intragastric alcohol of increasing concentration gradually (30%-60%, 5-9g·kg-1·d-1), 8, 8, 8 and 9 rats were sacrificed randomly at the end of 4th, 8th , 12th and 16th week, liver samples and liver homogenate (10%) were collected respectively. The concentrations of triglyceride (TG) in the liver homogenate and the level of adiponectin and tumor necrosis alpha (TNFα) in the serum were measured by biochemical chromatometry and ELISA method respectively. The mRNA and protein expression of Adip, AdipoR1 and AdipoR2 in the hepatic tissue were performed by reverse transcription polymerase (RT-PCR) and western blot. Results The model of rats alchoholic liver disease was developed. With the progress of ALD,the level of TG and TNFα in serum increased and the contention of Adip decreased gradually. The expression of Adip and AdipoR2 mRNA and protein decreased and no influenced in the AdipoR1. There is negative correlation between the expression of serum Adip and AdipoR2 in hepatic tissue and the level of serum TNF-α and TG in the liver homogenate.(r=-0.98~-0.90, P<0.01). And the expression level of Adip protein was positively correlated with the contents of Adip in the serum (r=0.90, P<0.01). Conclusions There is a close correlation between the decreased expression of Adip and AdipoR2 and adipose degenaration and inflammation in hepatic tissue.