高水平的同类氨酸与区域左心室功能减弱有关:动脉样硬化多民族研究
Khurram Nasir1, Michael Tsai, Boaz D Rosen
1Division of Cardiology, Johns Hopkins University, Baltimore, MD, USA.
Circulation
|January 4, 2007
概括
高水平的同类氨酸 (Hcy) 与无症状个体的左心室缩功能降低有关. 这一发现表明,Hcy甚至在症状出现之前就可能影响心脏健康.
科学领域:
- 心脏病学 心脏病学
- 生物化学 生物化学
- 医疗成像医学成像
背景情况:
- 高水平的同类氨酸 (Hcy) 是充血性心力衰竭的潜在危险因素.
- 以前的研究表明,在特定人群中,Hcy与心脏病之间存在联系.
研究的目的:
- 调查同类氨酸水平与区域左心室功能之间的关联.
- 用先进的成像技术评估无症状人群中的心脏功能.
主要方法:
- 在多民族动脉样硬化研究 (MESA) 的1178名参与者身上利用标记的磁共振成像 (MRI).
- 计算了区域峰值缩中壁周围菌株,通过冠状动脉区域定义左心室区域.
- 根据传统的心血管风险因素,人口统计和动脉样硬化的措施进行调整.
主要成果:
- 在与血Hcy水平相关的左前下降和左环区域观察到减少的区域性心肌周围缩短.
- 周围性缩功能障碍显示出与这些区域的日志转化Hcy水平升高的显著关联.
- 在所有分析的冠状动脉区域中,在较高的Hcy水平下,发现左心室应变减少的几率增加.
结论:
- 在无症状队列中,高水平的同类氨酸与区域左心室缩功能下降有关.
- 标签:MRI可以检测与Hcy相关的心脏功能微妙减少.
- 这些发现凸显了Hcy作为亚临床心脏功能障碍的潜在生物标志物.
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