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中国临床药理学与治疗学 ›› 2021, Vol. 26 ›› Issue (7): 753-759.doi: 10.12092/j.issn.1009-2501.2021.07.005

• 基础研究 • 上一篇    下一篇

川陈皮素抑制高糖诱导的乳鼠心肌细胞肥大

刘晓萍1,赖香茂2,欧阳资章1,江晟1,张莹1   

  1. 1广州医科大学附属第六医院 清远市人民医院 药学部,清远 511518,广东;2广州医科大学附属第六医院 清远市人民医院 泌尿外科,清远 511518,广东

  • 收稿日期:2020-12-28 修回日期:2021-03-16 出版日期:2021-07-26 发布日期:2021-08-09
  • 作者简介:刘晓萍,女,博士,副主任药师,研究方向:临床药学,心血管药理。 Tel: 0763-3113834 E-mail: 420411073@qq.com
  • 基金资助:
    广东省医学科研基金项目(A2021149)

Nobiletin inhibits neonatal rat cardiomyocytes hypertrophy induced by high glucose

LIU Xiaoping 1, LAI Xiangmao 2, OUYANG Zizhang 1, JIANG Sheng 1, ZHANG Ying 1   

  1. 1 Department of Pharmacy, the Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan 511518, Guangdong, China
  • Received:2020-12-28 Revised:2021-03-16 Online:2021-07-26 Published:2021-08-09

摘要: 目的:探讨川陈皮素(nobiletin, Nob)抑制高糖诱导心肌细胞肥大的作用及其机制。方法:利用高糖(high glucose, HG)刺激乳鼠心肌细胞(neonatal rat cardiomyocytes, NRCMs)建立心肌细胞肥大模型,并给予Nob、核因子E2相关因子2(Nrf2)抑制剂Brusatol干预,采用MTT法检测细胞存活率,qRT-PCR法检测C-myc、Nppa mRNA水平,免疫荧光检测心肌细胞表面积,Western blot法检测Nrf2和血红素加氧酶-1(HO-1)蛋白表达水平。结果:33.3 mmol/L HG刺激NRCMs 48 h,细胞存活率显著下降,C-myc、Nppa mRNA水平和细胞表面积显著升高,Nrf2和HO-1蛋白表达显著降低(P<0.05)。给予Nob干预后,与HG组比较,细胞存活率、Nrf2和HO-1蛋白表达显著上调,C-myc、Nppa mRNA水平和细胞表面积显著下降(P<0.05)。利用Brusatol抑制Nrf2活性,与HG+Nob组比较,上述指标被逆转。 结论:Nob抑制高糖诱导的心肌细胞肥大,其机制可能与激活Nrf2/HO-1信号通路有关。

关键词: 川陈皮素, 高糖, 心肌细胞肥大, Nrf2/HO-1信号通路

Abstract: AIM: To investigate the effect of nobiletin (Nob) on cardiomyocyte hypertrophy induced by high glucose and its mechanism.  METHODS: Neonatal rat cardiomyocytes (NRCMS) were stimulated with high glucose (HG) to establish cardiomyocyte hypertrophy and nobiletin was given. Cell viability was measured by MTT assay. C-myc and Nppa mRNA levels were detected by qRT-PCR. Cellular surface area was detected by immunofluorescence, and Nrf2 and HO-1 protein expressions were detected by Western blot. RESULTS: After stimulation with 33.3 mmol/L HG for 48 h, the survival rate of NRCMS was significantly decreased, C-myc, Nppa mRNA levels and cellular surface area were significantly increased, Nrf2 and HO-1 protein expression were significantly decreased (P<0.05). After Nob treatment, compared with HG group, cellular surface area, Nrf2 and HO-1 protein expression were significantly increased, C-myc and Nppa mRNA levels were significantly decreased. The above indexes were reversed by using Nrf2 inhibitor. CONCLUSION: Nob inhibits cardiomyocyte hypertrophy induced by high glucose, and its mechanism may be related to the activation of Nrf2/HO-1 signaling pathway.

Key words: nobiletin, high glucose, cardiomyocyte hypertrophy, Nrf2/HO-1 signaling pathway

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