纤维细胞受限的炎症酶激活促进心房动和心力衰竭与腹功能障碍
Luge Li1, Cristian Coarfa2, Yue Yuan1
1Department of Medicine (Section of Cardiovascular Research), Baylor College of Medicine, Houston, Texas, USA.
JACC. Basic to translational science
|April 17, 2025
概括
在心房纤维细胞中含有3 (NLRP3) 炎症酶的NLR家族皮林域通过增加纤维化和降低导电速度,促进心房动 (AF) 和心力衰竭. 在纤维细胞中抑制NLRP3可以预防AF相关的心脏病.
科学领域:
- 心脏病学 心脏病学
- 免疫学 免疫学 免疫学
- 纤维化研究 纤维化研究
背景情况:
- 心房动 (AF) 和心力衰竭经常同时存在.
- 这两种情况都涉及炎症信号和心脏纤维细胞.
- 纤维细胞炎细胞在AF和心力衰竭中的作用尚未完全理解.
研究的目的:
- 调查NLR家族含有3 (NLRP3) 炎症酶在心脏纤维细胞中的pyrin域的作用.
- 确定纤维细胞NLRP3激活对心房功能和心力衰竭的影响.
主要方法:
- 在AF患者的心房纤维细胞中分析了NLRP3表达.
- 在小鼠中诱导纤维细胞特异的NLRP3激活.
- 评估了心脏功能,纤维化和导电速度.
- 对NLRP3进行了敲击,以评估其保护作用.
主要成果:
- 在AF患者的心房纤维细胞中,NLRP3的升高调节.
- 在小鼠中,纤维细胞特异的NLRP3激活导致AF促进的心房肌病和腹功能障碍.
- 观察到纤维化增加和传导速度降低.
- NLRP3敲击减轻了AF促进心房基质和心肌病.
结论:
- 纤维细胞NLRP3炎症体是促进AF中的前节律纤维化的一个关键途径.
- 纤维细胞中NLRP3的激活有助于心肌病和腹功能障碍.
- 向纤维细胞NLRP3可能为AF和心力衰竭提供治疗策略.
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