实用肝脏病杂志 ›› 2020, Vol. 23 ›› Issue (2): 167-170.doi: 10.3969/j.issn.1672-5069.2020.02.005

• 实验性肝炎 • 上一篇    下一篇

非酒精性脂肪性肝病大鼠肝组织Vaspin表达及其意义探讨*

姜佳丽, 李莉, 赵菲, 钟乐萍, 郭子皓, 张川, 展玉涛   

  1. 100730 北京市首都医科大学附属北京同仁医院消化内科(姜佳丽,李莉,赵菲,郭子皓,张川,展玉涛);感染病科(钟乐萍)
  • 收稿日期:2019-03-29 出版日期:2020-03-10 发布日期:2020-04-20
  • 通讯作者: 展玉涛, E-mail:yutaozhan@263.com
  • 作者简介:姜佳丽,女,43岁,医学硕士,主治医师。主要从事胃肠道动力障碍性疾病与肝病学研究。E-mail:13693227701@163.com
  • 基金资助:
    国家自然科学基金资助项目(编号: 81570515)

Expression of Vaspin in HepG2 cells and in liver tissues of rats with nonalcoholic fatty liver diseases

Jiang Jiali, Li Li, Zhao Fei, et al   

  1. Department of Gastroenterology,Tongren Hospital,Affiliated to Capital Medical University,Beijing 100730,China
  • Received:2019-03-29 Online:2020-03-10 Published:2020-04-20

摘要: 目的 研究非酒精性脂肪性肝病(NAFLD)大鼠肝组织和体外培养的脂肪变性肝细胞Vaspin表达情况及其意义。方法 采用随机数字表法随机将12只SD健康雄性大鼠分为模型组6只和对照组6只,分别采用Lieber-DeCarli 液体高脂饮食和标准饮食饲养7 w,建立模型或对照。采用免疫组织化学染色法检测肝组织Vaspin表达。采用油酸诱导法体外培养建立HepG2细胞脂肪变性模型,采用Western blot法检测细胞Vaspin蛋白表达。结果 病理学检查提示脂肪变动物模型制备成功,表现为模型组肝细胞肿胀,细胞质内可见较多脂滴;模型组肝组织Vaspin表达增强,主要分布于脂滴周围;Western blot检测结果显示脂肪变性肝细胞和对照组细胞Vaspin/GAPDH表达分别为(0.49±0.70)和(0.68±0.40),差异显著 (P <0.05)。结论 在NAFLD动物肝组织和体外培养的脂肪变性肝细胞Vaspin表达增强,可能通过影响脂滴形成而参与了NAFLD的发病。

关键词: 非酒精性脂肪性肝病, 内脏脂肪组织来源的丝氨酸蛋白酶抑制剂, 脂肪因子, HepG2细胞, 大鼠

Abstract: Objective The purpose of this study was to investigate the expression of visceral adipose tissue-derived serine protease inhibitor (Vaspin) in HepG2 cells and in liver tissues of rats with nonalcoholic fatty liver diseases (NAFD). Methods 12 Sprague-Dawley rats were randomly divided into model (n=6) and control group (n=6) by computer-generated numbers. The rats in the two groups were fed with high-fat diet (Lieber-DeCarli liquid high fat diet) and standard diet for 7 weeks respectively. The Vaspin expression was stained by immunohistochemical method. The HepG2 cells were induced by oleic acid to establish hepatocyte steatosis in vitro, and the expression of Vaspin protein in hepatocytes was detected by Western blot. Results The liver cells swollen in model group and many fat droplets were seen in cytoplasm of the cells, suggesting the cell model was successfully built up; the immunohistochemical staining showed that intensified expression of Vaspin in liver tissues of rats in the model,and the expression was mainly around the lipid droplet; the Western blot demonstrated that the Vaspin/GAPDH expression in steatotic hepatocytes and in control cells were (0.49±0.70) and (0.68±0.40), respectively (P<0.05). Conclusion Vaspin expression intensifies in steatotic hepatocytes and in liver tissues of rats with NAFLD, which might be involved in the pathogenesis of NAFLD, especially in lipid droplet formation.

Key words: Nonalcoholic fatty liver diseases, Visceral adipose tissue-derived serine protease inhibitor, Adipocyte factor, HepG2 cells, Rats