铁化改善了冠状动脉疾病患者的内皮功能
S J Duffy1, E S Biegelsen, M Holbrook
1Evans Department of Medicine and Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, MA, USA.
Circulation
|June 13, 2001
概括
在冠状动脉疾病患者中,使用deferoxamine减少铁储量改善了氧化功能,这表明铁有助于动脉样硬化中的血管功能障碍.
科学领域:
- 心血管科学 心血管科学
- 氧化压力研究研究 氧化压力研究
- 血管生物学 血管生物学
背景情况:
- 铁储量增加与心血管事件增加有关.
- 反氧活性铁促进氧化应激和内皮功能障碍.
- 动脉样硬化与氧化 (NO) 作用受损有关.
研究的目的:
- 调查是否减少血管铁储存可以逆转内皮功能障碍.
- 在冠状动脉疾病患者中测试铁化剂德费罗胺的疗效.
主要方法:
- 向冠状动脉疾病患者服用德费罗胺 (500毫克静脉内).
- 评估了使用静脉闭塞整体图和甲胆的血管运动功能.
- 患者和健康志愿者的反应比较,有和没有NO合成酶抑制或基基清除.
主要成果:
- 冠状动脉疾病患者表现出受损的内皮依赖血管扩张.
- 德费洛克萨明降低了血清铁水平,并改善了患者的甲胆诱导的血管扩张.
- 德菲洛克萨明并没有影响健康志愿者的血管扩张或对酸的反应.
结论:
- 德菲洛克萨明可以增强冠状动脉疾病患者中氧化介导的血管扩张.
- 铁的可用性有助于减弱氧化在动脉样硬化中的作用.
- 针对血管铁可能是动脉样硬化的治疗策略.
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