首都医科大学学报 ›› 2007, Vol. 28 ›› Issue (1): 7-9.

• 专题报道 • 上一篇    下一篇

血管紧张素Ⅱ及其受体拮抗剂对肝星状细胞Ⅰ型胶原合成的影响

龚浩, 王宇, 张忠涛, 李建设, 马雪梅, 周延忠   

  1. 首都医科大学附属北京友谊医院普通外科
  • 收稿日期:2006-12-18 修回日期:1900-01-01 出版日期:2007-02-24 发布日期:2007-02-24

Effects of AngiotensinⅡ and Its Receptor Antagonist on CollagenⅠSynthesis of Hepatic Stellate Cells

Gong Hao, Wang Yu, Zhang Zhongtao, Li Jianshe, Ma Xuemei, Zhou Yanzhong   

  1. Department of General Surgery, Beijing Friendship Hospital, Capital Medical University
  • Received:2006-12-18 Revised:1900-01-01 Online:2007-02-24 Published:2007-02-24

摘要:

目的 观察血管紧张素Ⅱ(AngⅡ)及其受体拮抗剂(AT1RA)对体外培养的肝星状细胞Ⅰ型胶原蛋白合成及其mRNA表达的影响。方法 采用HSC-T6肝星状细胞系作为活化的肝星状细胞的研究模型。将培养的肝星状细胞分为对照组、AngⅡ组、AT1RA组和AngⅡ+AT1RA组。采用ELISA法检测细胞培养上清液中Ⅰ型胶原蛋白的含量。RT-PCR法检测肝星状细胞中Ⅰ型胶原mRNA的表达。结果 细胞培养上清液中Ⅰ型胶原蛋白含量及肝星状细胞Ⅰ型胶原mRNA的表达水平,AngⅡ组均高于对照组,差异有统计学意义(P<0.05),AT1RA组与AngⅡ+AT1RA组均低于对照组,差异有统计学意义(P<0.05)。结论 AngⅡ能够促进肝星状细胞Ⅰ型胶原蛋白的合成及其mRNA的表达,而AT1RA能够明显抑制这一作用。

关键词: 血管紧张素Ⅱ, 血管紧张素Ⅱ受体拮抗剂, 肝星状细胞, 胶原

Abstract:

Objective To investigate the effects of angiotensinⅡ(AngⅡ) and angiotensinⅡ type 1 receptor antagonist (AT1RA) on the collagenⅠsynthesis and collagenⅠmRNA expression of cultured hepatic stellate cells (HSCs) in vitro. Methods HSC-T6 rat hepatic stellate cell line was chosen as the study model of the activated hepatic stellate cells. Cultured HSCs were randomized into control group, AngⅡgroup, AT1RA group and AngⅡ+AT1RA group. Cell culture medium was used to detect the collagenⅠlevel with ELISA method. HSCs were harvested to measure the collagenⅠmRNA expression with RT-PCR. Results The collagen Ⅰ level and collagen Ⅰ mRNA expression level of AngⅡ group was higher than control group(P<0.05), AT1RA group and AngⅡ+AT1RA group was lower than control group(P<0.05). Conclusion AngiotensinⅡ can increase the collagenⅠ synthesis and collagenⅠ mRNA expression of hepatic stellate cells, while all these effects are inhibited by angiotensinⅡ type 1 receptor antagonist.

Key words: angiotensinⅡ, angiotensinⅡ receptor antagonist, hepatic stellate cell, collagen

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