在患有有或没有sarcomeric突变的多变性心肌病患者的机械能量效率
Felice Borrelli1, Raffaella Lombardi1, Grazia Canciello1
1Department of Advanced Biomedical Sciences, University Federico II of Naples, Via S Pansini, 5, I-801313, Naples, Italy.
Journal of cardiovascular translational research
|October 13, 2023
概括
超性心肌病 (HCM) 中的瘤突变降低了心肌机械能量效率 (MEE). 在HCM患者中,较低的MEE可能表明对sarcomeric突变的阳性基因测试.
科学领域:
- 心脏病学 心脏病学
- 遗传学 遗传学 是一个
- 生物物理学的生物物理.
背景情况:
- 增高性心肌病变 (HCM) 是一种遗传性心肌疾病.
- 肉蛋白基因突变是HCM的主要原因.
- 这些突变对心肌机能效率 (MEE) 的影响需要进一步研究.
研究的目的:
- 为了研究瘤突变对HCM患者MEE的影响.
- 确定MEE是否可以作为HCM中sarcomeric突变的生物标志物.
主要方法:
- 非侵入性压力/体积 (P/V) 分析对49名经过基因查的HCM患者进行.
- 机械能量效率指数 (MEEi) 被计算为中风体积乘心率,并以左心室 (LV) 质量正常化.
- 收集了临床数据,包括诊断时的年龄和家族病史.
主要成果:
- 57%的HCM患者携带了瘤突变.
- 患有和没有瘤突变的患者表现出相似的LV喷射分数,心率,LV质量和LV流出梯度.
- 较低的MEEi,更年轻的诊断年龄和家族病史显著与肉瘤突变的存在有关 (p < 0.05).
结论:
- 在HCM中 Sarcomeric突变导致LV性能降低,如下面MEEi所示.
- 较低的MEEi可能预测HCM中sarcomeric突变的阳性遗传分析.
- P/V 分析显示,MEEi 降低,而 HCM 中的 Sarcomeric 突变中填充压力没有显著变化.
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