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影响甲状腺功能障碍的心脏缩发生在独立于NLRP3炎症酶的NLRP3炎症酶上
Aline Cristina Parletta1, Gabriela Cavazza Cerri1, Claudia Ribeiro Borba Gasparini1
1Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, Av. Prof. Lineu Prestes, 2415, Butanta, Sao Paulo, 05508-000, Brazil.
Pflugers Archiv : European journal of physiology
|April 28, 2024
概括
甲状腺激素诱导的心脏缩不涉及NLRP3炎症酶. 然而,NLRP3对于维持正常的心脏功能至关重要,因为它缺少会损害心脏性能.
科学领域:
- 心脏病学 心脏病学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 心脏缩 (CH) 是一种适应性反应,可能导致心力衰竭.
- 炎症在CH中起作用,NLRP3炎症酶介导IL-1β的产生.
- 甲状腺激素 (TH) 诱导CH,可能通过NF-κB激活和S100A8上调.
研究的目的:
- 调查NLRP3炎症酶在TH诱导的心脏缩中的参与.
- 确定NLRP3炎症酶和caspase-1在CH病理生理学的作用.
主要方法:
- 在野生型 (WT),NLRP3淘汰赛 (NLRP3-KO) 和Caspase-1淘汰赛 (Caspase-1-KO) 小鼠中使用三甲状腺素诱导甲状腺功能过高.
- 形态和心脏功能分析.
- 分子测试以评估心脏炎症和缩标志物.
主要成果:
- TH诱导的CH发生在NLRP3炎症酶和caspase-1通路的独立性.
- 在TH诱导的CH期间,NLRP3表达在心脏中减少.
- 与WT小鼠相比,NLRP3-KO小鼠表现出动脉功能受损,心率下降,射出分数和分数缩短.
结论:
- NLRP3炎症酶并没有参与TH诱导的心脏缩的发展.
- 在维持基底心脏功能和收缩性方面,NLRP3起着至关重要的作用.
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