在心肌梗塞后,USP38调节炎症性心脏重塑
Yang Gong1,2,3, Bin Kong1,2,3, Wei Shuai1,2,3
1Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, Hubei 430060, China.
Clinical science (London, England : 1979)
|October 30, 2023
概括
乌比基特异性蛋白酶38 (USP38) 通过促进炎症和重塑,加剧心肌梗塞后的心室节律失常. 抑制USP38可能为心脏病发作后的心脏问题提供一种新的治疗策略.
科学领域:
- 心血管生物学 心血管生物学
- 分子医学是分子医学.
- 炎症研究 炎症研究
背景情况:
- 心肌梗塞 (MI) 后的心室节律失常 (VAs) 与炎症和心室重塑有关.
- 乌比基特异性蛋白酶38 (USP38) 在MI后心律失常基质生成中的作用尚不清楚.
研究的目的:
- 研究USP38在心脏病发作后静脉动脉的发展中的作用.
- 阐明USP38参与心脏中风后心脏重塑和心律失常的潜在分子机制.
主要方法:
- 心肌梗塞 (MI) 模型是使用手术左下垂冠状动脉绑定来创建的.
- 评估了USP38表达,炎症标志物 (CD68,TNF-α,IL-1β),心脏纤维化,电和离子通道重塑以及VA易感性.
- 使用心脏条件的USP38淘汰赛 (USP38-CKO) 和心脏特异性的USP38过度表达 (USP38-TG) 模型.
- 分析了TAK1/NF-κB信号通路的激活.
主要成果:
- 在心脏病发作后,USP38表达显著增加.
- USP38-CKO降低了发作后的炎症,纤维化,电力改造和VA易感性.
- USP38-TG加剧了炎症反应和心脏重塑.
- USP38调制影响了TAK1/NF-κB信号通路的激活.
结论:
- USP38在心脏病发作后促进炎症和心室重塑,从而增加VA易感性.
- 抑制TAK1/NF-κB通路的USP38激活会减轻这些有害影响.
- USP38代表了一个潜在的治疗目标,用于管理心脏重塑和心律失常后MI.
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