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阻断Sigmar1会加剧甲基胺诱导的高血压.

Zhen-Zhen Xu1, Jie Zhou1, Ke Duan1

  • 1Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, Guangzhou 510515, PR China.

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概括

长期暴露于甲基胺会通过促进血管纤维化引起高血压. 西格玛1受体 (Sigmar1) 起着关键作用,向它可能为甲基胺诱导的高血压提供新的治疗方法.

关键词:
在高血压的高血压.甲基胺是一种甲基胺.西格马尔 (Sigmar) 是一个伟大的人.血管纤维化 血管纤维化

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科学领域:

  • 心血管药理学心血管药理学
  • 血管生物学 血管生物学
  • 药物诱导的疾病 药物诱导的疾病

背景情况:

  • 长期接触甲基胺 (METH) 是发展高血压的重要危险因素.
  • 驱动METH诱导的高血压和相关的血管变化的精确机制尚未完全理解.

研究的目的:

  • 为了阐明METH诱导的高血压的潜在机制.
  • 研究Sigma1受体 (Sigmar1) 在METH诱导的血管改造和高血压中的作用.

主要方法:

  • 建立了一种由METH诱导的高血压的小鼠模型.
  • 血管改造,血压 (BP) 和Sigmar1表达在暴露于METH的野生类型 (WT) 和Sigmar1淘汰赛 (KO) 小鼠中进行了评估.
  • 在暴露于METH之前,小鼠接受了Sigmar1抗剂 (BD1047) 或激动剂 (PRE-084) 的预治疗.
  • 分析了血管光滑肌细胞 (VSMC) 和介质干细胞的分化,原分泌和TGF-β/Smad2/3信号通路.

主要成果:

  • 在WT小鼠中,METH暴露导致血压升高,血管重塑与原沉积,以及Sigmar1水平升高.
  • 在暴露于METH后,Sigmar1 KO小鼠和接受抗体治疗的小鼠表现出恶化的高血压和血管纤维化.
  • 抗激素治疗防止了METH诱导的血压和原蛋白的增加.
  • METH诱导VSMC和干细胞分化成肌纤维细胞样细胞,增加原分泌.
  • 发现Sigmar1通过抑制METH暴露细胞中的TGF-β/Smad2/3通路来抑制COL1A1表达.

结论:

  • 西格玛1在METH诱导的高血压和血管纤维化中发挥着关键作用.
  • 西格玛1通过抑制TGF-β/Smad2/3信号通路来缓解METH诱导的血管损伤.
  • 向Sigmar1为管理METH诱导的高血压和相关的血管纤维化提供了潜在的治疗策略.