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血代谢物和心脏线粒体功能与心力衰竭进展的关联

Vandana Revathi Venkateswaran¹, Ruicong She², Stephen J Gardell³

¹Center for Individualized and Genomic Medicine Research (CIGMA), Department of Internal Medicine, Henry Ford Hospital, Detroit, Michigan, USA.

ESC heart failure

|March 10, 2025

概括

血乙卡尼丁和酸循环代谢物预测心力衰竭中左心室重塑的不良影响,减少喷射率 (HFrEF). 心脏能量功能受损导致HFrEF进展中的这些代谢物变化.

科学领域:

心脏病学心脏病学
代谢学代谢学代谢学
生物化学生物化学

背景情况:

血代谢产物提供了心力衰竭的预后见解与减少喷射率 (HFrEF).
酸循环代谢物特别与排气分数 (EF) 的变化有关.

研究的目的:

在慢性HFrEF的狗模型中研究将血代谢物与心脏重塑联系起来的机制.
为了测试血代谢物变化,左心室 (LV) 末缩体积和心肌细胞线粒体功能之间的关联.

主要方法:

在18只狗中通过微栓塞诱导中度HFrEF,目标LVEF为35%-40%.
在12个月的时间内评估血代谢产物,LV大小和线粒体功能.

主要成果:

血乙基卡尼丁的改变,以及有机酸和氨基酸的早期变化,预测了随后的不良LV重塑.
13种代谢物与12个月的LV扩大相关,早在3个月就观察到显著的关联 (例如C18:2,谷氨酸,3-HBA).
心肌细胞线粒体功能受损,证据是最大ATP合成和ADP刺激的呼吸减少,与LV扩大相关,并与特定的血代谢物如酸盐,烟酸盐和谷氨酸相关.

结论:

血乙卡尼丁,酸循环和性代谢产物作为犬类HFrEF中不良LV重塑的预测因素.
LV扩大与心肌细胞线粒体功能减弱有关,这反过来又与改变的酸循环代谢产物有关.
这些发现表明,心脏能量功能受损是HFrEF进展期间观察到的血代谢物改变的关键驱动因素.

关键词:

心脏线粒体的进展.心脏衰竭是因为心脏衰竭.血代谢物的血代谢物血代谢组概况分析

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