氧气独立光动力学疗法-通过交感神经调节通过M1巨细胞对心室失律的选择性消耗
Heng Lin1, Hengyang Liu1, Haosong Xi1
1Cardiovascular Hospital, Renmin Hospital of Wuhan University, Hubei Key Laboratory of Autonomic Nervous System Modulation, Cardiac Autonomic Nervous System Research Center of Wuhan University, Wuhan, 430060, P. R. China.
这项研究引入了氧气独立的光动力学疗法 (Oi-PDT),以耗尽M1巨细胞,有效地减少左星 (LSG) 的过度活化,并治疗心肌梗塞 (MI) 引起的心室失常症 (VAs).
科学领域:
- 生物医学工程 生物医学工程
- 心血管研究研究心血管研究
- 免疫学 免疫学 免疫学
背景情况:
- 心肌梗塞 (MI) 往往导致恶性心室节律失常 (VAs) 由于左星 (LSG) 过度激活.
- 亲炎性M1巨细胞加剧了交感过度激活,并导致VA.
研究的目的:
- 开发一种新的治疗策略,通过选择性地消耗LSG中的M1巨细胞来治疗MI诱导的VA.
- 为了研究氧气独立光动力学疗法 (Oi-PDT) 与M1巨细胞向相结合的疗效.
主要方法:
- 开发一种无氧光动力疗法 (Oi-PDT) 剂 (PPSCD),在近红外 (NIR) 光照射下产生氧化光生成孔 (h+).
- 通过SR-A受体与PPSCD结合以向M1巨细胞进行选择性消耗.
- 通过生成的活性氧物种 (ROS) 和h+诱导M1巨细胞的亡和铁亡.
主要成果:
- 在体内测试表明,在Oi-PDT治疗后,神经活动在MI后显著减少 (从104.5 ± 2.9到51.5 ± 6.7).
- 通过选择性地耗尽LSG中的M1巨细胞,Oi-PDT有效地抑制了MI诱导的VA.
- -PDT剂成功地向并通过亡和铁亡消除了M1巨细胞.
结论:
- 使用Oi-PDT选择性M1巨枯竭是缓解LSG过度活化的有希望的策略.
- 这种方法为心肌梗塞引起的心室心律不整提供了一种新且有效的治疗方法.
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