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Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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干白素11治疗导致急性左心室功能障碍.

Mark Sweeney1,2, Katie O'Fee1,2, Chelsie Villanueva-Hayes1,2

  • 1MRC-Laboratory of Medical Sciences, Hammersmith Hospital Campus, London W12 0NN, UK.

Cardiovascular research
|October 9, 2024
PubMed
概括
此摘要是机器生成的。

介质素11 (IL11) 通过激活IL11RA/JAK/STAT3在心肌细胞中,直接导致心力衰竭. 这一发现推翻了以前认为IL11具有心脏保护作用的观点,并解释了其严重的心脏副作用.

关键词:
心脏有毒性 - 心脏有毒性纤维化 纤维化 纤维化心脏衰竭是因为心脏衰竭.炎症 炎症是一种炎症.干细胞蛋白11 干细胞蛋白11这就是JAK/STAT.

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科学领域:

  • 心脏病学 心脏病学
  • 分子生物学分子生物学
  • 药理学 药理学是指药理学的学科.

背景情况:

  • 介素11 (IL11) 最初是用于治疗血小板缺血的.
  • 后来发现IL11对血液形成是多余的,并且与严重的心脏副作用有关.
  • 以前的假设表明IL11具有心脏保护作用.

研究的目的:

  • 为了确定IL11.的直接心肌细胞毒性.
  • 阐明 IL11 诱导的心脏功能障碍背后的分子机制.
  • 研究IL11RA/JAK/STAT3信号在IL11心脏毒性中的作用.

主要方法:

  • 重组小鼠IL11 (rmIL11) 在小鼠中的注射.
  • 分子分析包括免疫阻塞,qRT-PCR,批量和单细胞RNA-seq以及ATAC-seq.
  • 心肌细胞特异性Il11ra1淘汰赛 (CMKO) 鼠标模型 (vCMKO和m6CMKO).
  • 心声学,心肌细胞收缩性测定和JAK/STAT抑制研究.

主要成果:

  • rmIL11注射导致左心室喷射分数的急性剂量依赖性损伤.
  • 增加心肌STAT3和JNK酸化,促炎途径,以及扰乱处理.
  • 心肌细胞特异性淘汰赛小鼠受到IL11诱导的心脏功能障碍的保护.
  • JAK/STAT抑制可以防止rmIL11引起的心脏毒性.

结论:

  • IL11直接激活心肌细胞中的IL11RA/JAK/STAT3信号,导致急性心力衰竭.
  • 这些发现挑战了IL11作为心脏保护的概念.
  • 这项研究解释了IL11治疗观察到的严重心脏副作用.