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在人类心脏病中潜伏的心肌细胞再生潜力

Wouter Derks¹, Julian Rode², Sofia Collin³

¹Center for Regenerative Therapies Dresden, TU Dresden, Dresden, Germany.

bioRxiv : the preprint server for biology

|September 25, 2023

概括

人类心脏细胞 (心肌细胞) 在心力衰竭中再生最小. 然而,左心室支装置显著促进心肌细胞的更新,揭示了心脏病的治疗潜力.

科学领域:

心脏病学心脏病学
再生医学是一种再生医学.
人体生理学人体生理学

背景情况:

成人人体心肌细胞具有有限的再生能力,每年更新率约为0.5%.
这种心肌细胞再生能力在心力衰竭的背景下被利用或受损的程度仍然是争论的主题.

研究的目的:

为了研究末期心力衰竭患者的心肌细胞更新率.
为了确定左心室支器治疗是否会影响心力衰竭患者的心肌细胞再生.

主要方法:

利用追溯的14C (碳-14) 出生日期来分析心肌细胞周转率.
在健康人群,心力衰竭患者和用左心室支装置治疗的心力衰竭患者之间比较心肌细胞生成率.

主要成果:

发现,心肌细胞生成在末期心力衰竭患者中是最小的,发生率比健康心脏低18-50倍.
用左心室支装置治疗的患者表现出心肌细胞更新的显著增加,与健康人群相比超过6倍.
这些患者还在心脏功能和结构方面表现出显著的改善.

结论:

人类心脏病,特别是当用机械支治疗时,显示出相当大的,以前被低估的心肌细胞再生潜力.
这些发现表明,增强内源性心肌细胞再生可能是治疗心力衰竭的可行治疗策略.

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