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中国应用生理学杂志 ›› 2017, Vol. 33 ›› Issue (3): 267-270.doi: 10.12047/j.cjap.5514.2017.065

• 研究论文 • 上一篇    下一篇

高糖对线粒体乙醛脱氢酶2在大鼠心肌成纤维细胞中表达的影响

谷小雨1,3, 方婷婷3, 高琴3, 康品方2, 李正红3, 程向阳1   

  1. 1. 蚌埠医学院第一附属医院麻醉科, 安徽 蚌埠 233004;
    2. 蚌埠医学院第一附属医院心血管内科, 安徽 蚌埠 233004;
    3. 蚌埠医学院生理学教研室, 安徽 蚌埠 233030
  • 收稿日期:2016-09-13 修回日期:2017-01-25 出版日期:2017-05-28 发布日期:2018-06-20
  • 通讯作者: 程向阳,Tel:0552-3086198,E-mail:cxybbmc@163.com E-mail:cxybbmc@163.com
  • 基金资助:
    国家自然科学基金资助项目(81550036);安徽省自然科学基金资助项目(1508085MH169,1508085MH170);蚌埠医学院研究生科研创新计划项目(Byycx1548)

Effect of high concentration glucose on the expression of ALDH2 in cardiac fibroblasts of rats

GU Xiao-yu1,3, FANG Ting-ting3, GAO Qin3, KANG Pin-fang2, LI Zheng-hong3, CHENG Xiang-yang1   

  1. 1. Department of Anesthesiology, the First Affiliated Hospital of Bengbu Medical College, Bengbu 233004;
    2. Department of Cardiovascular Medicine, the First Affiliated Hospital of Bengbu Medical College, Bengbu 233004;
    3. Department of Physiology, Bengbu Medical College, Bengbu 233030, China
  • Received:2016-09-13 Revised:2017-01-25 Online:2017-05-28 Published:2018-06-20
  • Supported by:
    国家自然科学基金资助项目(81550036);安徽省自然科学基金资助项目(1508085MH169,1508085MH170);蚌埠医学院研究生科研创新计划项目(Byycx1548)

摘要: 目的:观察心肌成纤维细胞是否存在线粒体乙醛脱氢酶2(ALDH2)的表达,探讨ALDH2在高糖诱导的心肌成纤维细胞引起纤维化发生中的作用。方法:原代培养心肌成纤维细胞,分为正常对照组(5.5 mmol/L)、正常+ALDH2激动剂Alda-1(20μmol/L)组、高糖组(30 mmol/L)、高糖+ Alda-1组。免疫荧光鉴定心肌成纤维细胞。各组细胞分别培养48 h后应用MTT法检测成纤维细胞增殖活力,RT-PCR和Western blot检测ALDH2 mRNA及蛋白的表达。结果:RT-PCR和Western blot结果显示心肌成纤维细胞ALDH2 mRNA和蛋白均有表达。与正常对照组相比,高糖组心肌成纤维细胞增殖能力提高(P < 0.01),ALDH2蛋白表达下降(P < 0.05);与高糖组相比,高糖+ Alda-1组心肌成纤维细胞增殖能力降低(P < 0.01),ALDH2的蛋白表达增加(P < 0.05)。结论:心肌成纤维细胞存在ALDH2的表达,ALDH2激动剂Alda-1提高ALDH2的表达后可以抑制高糖引起的心肌成纤维细胞的增殖。

关键词: 心肌成纤维细胞, 乙醛脱氢酶2, 高糖, Alda-1, 大鼠

Abstract: Objective: To observe whether acetaldehyde dehydrogenase 2 (ALDH2) is expressed in cardiac fibroblasts and investigate the change of ALDH2 in cardiac fibroblasts when cultured with high concentration of glucose. Methods: Cultured cardiac fibroblasts were randomly divided into four groups:normal control group (5.5 mmol/L glucose), Alda-1 (the agonist of ALDH2, 20μmol/L) group, high glucose group (30 mmol/L glucose) and high glucose + Alda-1 group. Cardiac fibroblasts were identified by immunofluore-scence technique. Cell prolifera-tion was detected by MTT method after treated with drugs for 48 hours. mRNA and protein expressions of ALDH2 were determined by RT-PCR and Western blot, aimed to ensure whether ALDH2 was expressed in cardiac fibroblasts. The changes of ALDH2 protein expression in cardiac fibroblasts were tested by Western blot. Results: RT-PCR and Western blot results revealed that ALDH2 was expressed in cardiac fibroblasts. Compared with normal control group, cardiac fibroblasts proliferation was increased (P < 0.05), while the protein expression of ALDH2 was reduced (P < 0.05) in high glucose group. When treated with Alda-1, the proliferation of cardiac fibroblasts was decreased (P < 0.01), while the protein expression of ALDH2 was increased (P < 0.05) in high glucose group. Conclusion: ALDH2 was expressed in cardiac fi-broblasts. Alda-1, the agonist of ALDH2 enhanced the expression of ALDH2 and inhibited the proliferation of cardiac fibroblasts when cultured with high concentration of glucose.

Key words: cardiac fibroblasts, acetaldehyde dehydrogenase 2, high concentration of glucose, Alda-1, rat

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