基础医学与临床 ›› 2008, Vol. 28 ›› Issue (1): 66-69.

• 研究论文 • 上一篇    下一篇

去甲肾上腺素对体外肝星状细胞系凋亡的影响

刘娜 张晓岚 姚冬梅 田晓鹏   

  1. 河北医科大学第二医院 河北医科大学第二医院消化科 河北医科大学附属第二医院消化内科 河北医科大学附属第二医院消化内科
  • 收稿日期:2007-02-27 修回日期:2007-05-14 出版日期:2008-01-25 发布日期:2008-01-25
  • 通讯作者: 刘娜

Effects of norepinephrine on hepatic stellate cells apoptosis in vitro

Na LIU, Xiao-lan ZHANG, Dong-mei YAO, Xiao-peng TIAN   

  1. Department of Gastroenterology, the Second Hospital of Hebei Medical University Department of Gastroenterology, the Second Hospital of Hebei Medical University
  • Received:2007-02-27 Revised:2007-05-14 Online:2008-01-25 Published:2008-01-25
  • Contact: Na LIU,

摘要: 目的 探讨交感神经递质去甲肾上腺素(NE)对体外培养的肝星状细胞(HSCs)凋亡的影响。方法 体外培养HSCs,用四甲基偶氮唑盐(MTT)法检测NE对HSCs增殖的影响;原位杂交凋亡检测(TUNEL)法观察NE及各受体亚型的阻滞剂对HSCs凋亡的影响;流式细胞术检测凋亡率。结果 ①不同浓度NE均促进HSCs增殖,并呈时间依赖性;NE浓度为10μmol/L时促增殖作用最显著;②10μmol/L浓度NE作用于HSCs 24 h,TUNEL 和流式细胞术检测HSCs凋亡率均显著低于对照组(P<0.05);③加入各肾上腺素受体(AR)阻滞剂后HSCs凋亡率升高,其中α-AR和β2-AR阻滞剂作用最显著。结论 交感神经递质NE对体外活化的HSCs具有促增殖作用,并可以抑制HSCs凋亡,主要是通过α-AR和β2-AR起作用的。

关键词: 肝星状细胞, 去甲肾上腺素, 肾上腺素受体, 增殖, 凋亡

Abstract: Object To investigate the effects of NE on hepatic stellate cells (HSCs) apoptosis and the mechanism thereof. Methods After NE and the antagonists of adrenoceptor subtypes were administered to HSCs, MTT method was used to evaluate cell proliferation. TUNEL assay and flow cytometry were used to detect cell apoptosis. Results ①Compared with control group, NE at concentrations of 1、10 and 100 µmol/L induced HSCs proliferation in a time-dependent manner; The action of NE at concentrations of 10µmol/L reached the peak (0.262±0.085 vs. 0.048±0.055, P<0.05). ②After exposure of HSCs to NE at concentration of 10µmol/L for 24 h, apoptosis rates decreased significantly compared with control group(6.60±3.05 vs. 12.60±4.76 by TUNEL, P<0.05; 2.29±0.22 vs. 3.06±0.57 by FCM, P<0.05). ③The antagonists of adrenoceptor subtypes, especially of α- and β2- adrenoceptor, reversed the apoptosis greatly. Conclusions Sympathetic neurotransmitter, NE, could induce HSCs proliferation, and inhibit HSCs apoptosis, mainly through α- and β2- adrenoreceptor.

Key words: hepatic stellate cell, NE, adrenoreceptor, proliferation, apoptosis