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在心力衰竭和减少射出小部分的患者骨肌病理中的性别差异
Nathanael Wood1, Annabel Critchlow1, Chew W Cheng2
1Faculty of Biological Sciences, School of Biomedical Sciences (N.W., A.C., M.G.P., S.E., T.S.B.), University of Leeds, United Kingdom.
Circulation. Heart failure
|October 9, 2024
概括
与女性相比,患有心力衰竭与减少射出分数 (HFrEF) 的男性表现出更严重的骨肌异常. 这些发现表明,肌肉病理可能不是HFrEF妇女更严重症状的主要驱动因素.
科学领域:
- 心脏病学 心脏病学
- 肌肉生理学 肌肉生理学
- 基因组学就是基因组学.
背景情况:
- 与男性相比,患有心力衰竭和减少喷射率 (HFrEF) 的女性会出现更严重的症状和降低生活质量.
- 导致这种临床异质性的潜在非心脏机制,特别是骨肌肉病理,尚不清楚.
研究的目的:
- 研究HFrEF患者骨肌病理的基于性别的差异.
- 探索这些差异是否解释了HFrEF男性和女性之间观察到的临床异质性.
主要方法:
- 来自HFrEF和对照组的男性和女性的肌肉活检进行了转录组学 (RNA测序),组织学和分子信号分析.
- 使用酶相关的免疫吸收试验分析了血清炎症概况.
- 统计分析包括双向ANOVA来评估性别和病情之间的相互作用.
主要成果:
- RNA测序揭示了基因表达的显著性别差异,男性表现出上调的代谢和下调的线粒体术语,而HFrEF的女性具有更高的益生态IGF1表达.
- 与女性相比,患有HFrEF的男性表现出更高的益基因表达 (ubiquitin蛋白酶体,自,肌素系统).
- 女性表现出具有较高毛细体和I型纤维特征的亲氧化肌肉表型,以及关键调节基因和循环因子表达的差异 (例如VEGF,IL-6,IL-8).
结论:
- 在HFrEF中,骨肌病理存在显著的性别差异,男性在转录组,纤维表型,毛细血管和循环因子中表现出更大的异常.
- 这些发现挑战了肌肉病理是导致HFrEF妇女症状加剧的主要原因的观点.
- 需要进一步的研究来阐明HFrEF中性别特异性临床表现背后的精确机制.
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