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中国药学(英文版) ›› 2024, Vol. 33 ›› Issue (7): 609-619.DOI: 10.5246/jcps.2024.07.045

• 【研究论文】 • 上一篇    下一篇

黄连解毒汤对自发性高血压大鼠心脏内质网应激的影响

张晓明1,#, 朱世慧1,#, 高艺文1, 李建橡2, 张楠1,*(), 岳桂华3,*()   

  1. 1. 滨州医学院烟台附属医院, 山东 烟台 264100
    2. 广西中医药大学附属瑞康医院, 广西 南宁 530000
    3. 广西中医药大学, 广西 南宁 530000
  • 收稿日期:2023-11-21 修回日期:2023-12-23 接受日期:2024-01-08 出版日期:2024-07-30 发布日期:2024-07-30
  • 通讯作者: 张楠, 岳桂华

Effect of Huanglian Jiedu Decoction on cardiac endoplasmic reticulum stress in spontaneously hypertensive rats

Xiaoming Zhang1,#, Shihui Zhu1,#, Yiwen Gao1, Jianxiang Li2, Nan Zhang1,*(), Guihua Yue3,*()   

  1. 1 Yantai Affiliated Hospital of Binzhou Medical College, Yantai 264100, Shandong, China
    2 Ruikang Hospital Affiliated to Guangxi University of Traditional Chinese Medicine, Nanning 530000, Guangxi, China
    3 Guangxi University of Traditional Chinese Medicine, Nanning 530000, Guangxi, China
  • Received:2023-11-21 Revised:2023-12-23 Accepted:2024-01-08 Online:2024-07-30 Published:2024-07-30
  • Contact: Nan Zhang, Guihua Yue
  • About author:

    # Xiaoming Zhang and Shihui Zhu contributed equally to this work.

  • Supported by:
    The National Natural Science Foundation of China (Grant No. 81860831) and the Shandong Provincial Key Project of Traditional Chinese Medicine Science and Technology (Grant Nos. M-2023170, M-2022233).

摘要:

黄连解毒汤为清热解毒的代表方, 主要用于治疗三焦火毒热盛证。肝火亢盛是高血压常见的证型, 风火炽盛、风毒内生是高血压的重要病机。本研究目的是观察黄连解毒汤(Huanglian Jiedu decoction, HLJDD)对自发性高血压大鼠(Spontaneous hypertension rat, SHR)内质网的影响, 进一步探讨内质网应激(ERS)与心肌重塑、损伤的相互关系。将50只SHR大鼠随机分为模型组、HLJDD低剂量、中剂量、高剂量组以及卡托普利组5个组别, 另设Wistar-Kyoto(WKY)大鼠为空白对照组, 每组各10只。除模型组和空白对照组灌胃给予等体积的生理盐水外, 其余各组分别灌胃给予相应剂量药物, 每天1次, 共6周。实验末, 进行心脏重量指数(HWI)和左心室重量指数(LVWI)值检测, HE染色检测心脏组织病理变化, Western blotting和qPCR检测内质网应激相关蛋白和mRNA表达水平变化, TUNEL染色检测心肌细胞凋亡。结果发现黄连解毒汤各组随着黄连解毒汤浓度的增加, 小鼠心脏的HWI和LVWI升高(P < 0.05), 心肌结构损伤明显改善、胶原纤维明显减少, 黄连解毒汤中、高剂量组显著降低心肌肌醇依赖酶1α(IRE1α)、 X盒结合蛋白1(XBP1)、 糖调节蛋白78(GRP78)、CCAAT增强子结合蛋白同源蛋白(CHOP)的mRNA和蛋白表达(P < 0.05), 作用同卡托普利组。本研究HLJDD有效改善SHR心肌组织损伤, 其分子机制可能是下调IRE1α、XBP1、GRP78、CHOP表达, 抑制过度的内质网应激, 减少心肌细胞的凋亡, 从而发挥对心脏的保护作用。

关键词: 黄连解毒汤, 自发性高血压, 内质网应激, 心肌重塑, IRE1α, XBP1, GRP78, CHOP

Abstract:

Huanglian Jiedu Decoction (HLJDD) is a quintessential prescription renowned for its heat-clearing and detoxifying properties. It is primarily prescribed to counteract the syndrome characterized by the excessive heat of the Sanjiao fire. Notably, the hyperactivity of liver fire is frequently linked with hypertension, where wind fire and wind toxicity emerge as pivotal pathogenic factors. This study aimed to investigate the impact of HLJDD on the endoplasmic reticulum in spontaneously hypertensive rats (SHR), further delving into the interplay between endoplasmic reticulum stress (ERS) and myocardial remodeling and damage. Fifty SHR rats were stratified randomly into five cohorts: model, low-dose HLJDD, medium-dose HLJDD, high-dose HLJDD, and captopril groups. For comparison, a set of Wistar-Kyoto (WKY ) rats served as the baseline control group, with each group comprising 10 rats. While the model and control groups received equivalent volumes of normal saline via gavage, the other groups were administered the respective drug dosages through the same route daily for a span of 6 weeks. Upon the experiment’s conclusion, metrics such as the heart mass index (HWI) and left ventricular mass index (LVWI) were assessed. Cardiac tissue anomalies were identified using H&E staining, while ERS-related protein and mRNA expression levels were ascertained via Western blotting analysis and qPCR. Moreover, TUNEL staining was employed to detect cardiomyocyte apoptosis. The findings indicated that increasing HLJDD concentrations corresponded with escalated HWI and LVWI in rat hearts (P < 0.05). There was a marked enhancement in myocardial structural integrity, accompanied by a notable reduction in collagen fibers. The mRNA and protein expressions of myocardial inositol-dependent enzyme 1α (IRE1α), X-box binding protein 1 (XBP1), glycoregulatory protein 78 (GRP78), and CCAAT enhancer binding protein homologous protein (CHOP) in the medium and high-dose groups saw significant declines (P < 0.05). These effects mirrored those observed in the captopril group. The study underscored HLJDD’s efficacy in mitigating myocardial tissue damage in SHR. This therapeutic effect was potentially attributed to the downregulation of IRE1α, XBP1, GRP78, and CHOP, curbing excessive ERS, diminishing cardiomyocyte apoptosis, and thereby conferring cardioprotection.

Key words: Huanglian Jiedu Decoction, Spontaneous hypertension, Endoplasmic reticulum stress, Myocardial remodeling, IRE1α, XBP1, GRP78, CHOP

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