天生的免疫激活和线粒体ROS诱导COVID-19后急性和持续的心脏导电系统功能障碍
Deepthi Ashok1, Ting Liu1, Misato Nakanishi-Koakutsu2,3
1Division of Cardiology, Department of Medicine, and.
JCI insight
|December 22, 2025
概括
COVID-19通过间接的先天性免疫激活和氧化还原应激引起心律失常,而不是直接的病毒性心脏感染. 这种持续的心脏导电系统损伤可能解释了长期的COVID综合征症状.
科学领域:
- 心脏病学 心脏病学
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
背景情况:
- 在急性SARS-CoV-2感染和长期COVID中,心律不整是常见的.
- 与COVID-19相关的心律失常的潜在机制在很大程度上仍未知.
研究的目的:
- 调查SARS-CoV-2感染对心脏电生理学和心脏导电系统 (CCS) 的急性和长期影响.
- 阐明COVID-19影响心脏功能的间接机制.
主要方法:
- 仓鼠感染了SARS-CoV-2,并记录了4周的心电图.
- 评估了心脏基因表达,巨细胞透和细胞因子概况.
- 通过使用polyyinosinic:polycytidylic acid (PIC) 注射来模拟天生的免疫激活.
主要成果:
- SARS-CoV-2 感染引发了显著的心律失常,包括心和心房阻塞,心脏中没有可检测的病毒蛋白质.
- 观察到持久的CCS损伤,其特征是细胞因子表达,连xin错位化和巨细胞重塑.
- PIC注射模仿了COVID-19心律失常,突出了先天免疫激活的作用.
- JAK/STAT抑制和线粒体抗氧化剂减轻了心脏影响,这表明先天免疫和氧化还原压力是关键调解者.
结论:
- SARS-CoV-2 感染通过先天性免疫激活和氧化还原应激间接引起心律失常,导致持续的 CCS 损伤.
- 这些发现提供了关于急性COVID-19和长期COVID综合征中心律失常的病理生理学的见解.
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