扩张性心力衰竭:与扩张性功能障碍相关的肌动脉原循环增加的证据
Ramón Martos1, John Baugh, Mark Ledwidge
1Heart Failure Unit, St Vincent's University Hospital, Elm Park, Dublin 4, Ireland.
Circulation
|February 7, 2007
概括
扩张性心力衰竭 (DHF) 涉及活性纤维化,增加心室硬. 这项研究在高血压患者中发现了原蛋白和矩阵金属蛋白酶标记的升高,这表明纤维化过程导致了这种情况.
科学领域:
- 心脏病学 心脏病学
- 生物化学 生物化学
- 病理生理学 病理生理学
背景情况:
- 扩张性心力衰竭 (DHF) 的病理生理学尚不清楚,可能涉及活性纤维化和心室硬度增加.
- 高血压是关键的危险因素,影响透缩功能和心脏充满.
研究的目的:
- 研究高血压患者的原新陈代谢,跨越不同扩张功能阶段.
- 确定纤维化标志物在患有和没有 DHF 的患者中的作用.
主要方法:
- 研究了86名高血压患者,根据DHF的存在和扩张功能严重程度分类.
- 测试的血清含量 procollagen (I,III 类型),矩阵金属蛋白酶 (MMPs) 和MMPs 的组织抑制剂.
- 采用多普勒回声心脏学来评估透静填充参数 (E/A比率,减速时间,同位体体内放松时间).
主要成果:
- 与没有DHF的患者相比,患有DHF的患者的血清中甲基蛋白类型I的carboxy-terminal telopeptide,甲基蛋白类型III的amino-terminal propeptide,MMP-2和MMP-9的水平显著更高.
- 更严重的扩张性功能障碍阶段与原,MMP-2和MMP-1组织抑制剂水平的增加有关.
- 在每一个扩张性功能障碍阶段内,DHF患者始终表现出纤维化标志物的升高.
结论:
- 血清学证据支持DHF中有一个活跃的纤维化过程.
- 纤维化标志物在扩张功能障碍的晚期更为明显.
- 这些发现可能会阐明DHF的病理生理学,并建议新的诊断和治疗点.
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