在缺血症/再输血损伤中,皮松心脏保护包括抗氧化机制
Daiana S Escudero1,2, Juliana C Fantinelli1,3, Valeria R Martínez1,3
1Centro de Investigaciones Cardiovasculares 'Dr. Horacio E. Cingolani', Facultad de Ciencias Médicas de La Plata, Universidad Nacional de La Plata, La Plata, Argentina.
European journal of clinical investigation
|January 31, 2024
概括
急性皮松 (HC) 治疗通过减少氧化应激和改善心脏功能来保护心肌梗塞后的心脏. 这种心脏保护作用涉及通过AKT信号传递抑制NHE1活性.
科学领域:
- 心脏病学 心脏病学
- 内分泌学 在内分泌学.
- 分子生物学分子生物学
背景情况:
- 葡萄糖皮质体 (GR) 和矿物质皮质体 (MR) 受体是心脏组织的关键.
- 激活MR会在心肌梗塞 (AMI) 后恶化心脏功能.
- 由于使用多种类型的皮质类固醇,GR激活对AMI的影响尚不清楚.
研究的目的:
- 在小鼠AMI模型中调查急性皮 (HC) 给药是否具有心脏保护作用.
- 要确定HC是否调节NHE1活动并减少氧化应激.
主要方法:
- 隔离的老鼠心经经历了区域性缺血和HC的再输液.
- 测量了心脏病发作的大小和氧化应激.
- 在乳头肌肉中评估了NHE1活性和细胞内pH恢复.
主要成果:
- HC降低了心脏病发作的大小和心脏力学改善后AMI.
- HC降低了氧化应激,并恢复了MFN-2水平.
- HC通过AKT酸化抑制了NHE1活性,并增加了Ser648酸化.
结论:
- 在早期再注血期间的急性HC治疗对AMI具有心脏保护作用.
- 保护与AKT的非基因组GR触发的NHE1抑制有关.
- 抗氧化作用和改善的线粒体动力学可能有助于.
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