乙醇促进动脉生成,并恢复长期缺血性心肌的输液
Antonio D Lassaletta1, Nassrene Y Elmadhun, Yuhong Liu
1Division of Cardiothoracic Surgery, Cardiovascular Research Center, Warren Alpert Medical School, Brown University, Providence, RI (A.D.L., N.Y.E., Y.L., J.F., T.A.B., N.W.K., F.W.S.); and Cardiology Division, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA (R.J.L.).
Circulation
|September 14, 2013
概括
在患有慢性心肌缺血的猪中,中等程度的乙醇补充改善了动脉动脉密度和血流. 这表明乙醇可能直接促进新的血管生长并增强微血管功能.
科学领域:
- 心血管研究研究心血管研究
- 血管生物学 血管生物学
- 乙醇的新陈代谢过程
背景情况:
- 与大量饮酒或戒酒相比,适度饮酒与心脏保护有关.
- 慢性心肌缺血为心血管事件带来重大风险.
- 研究乙醇对缺血性心脏组织的直接影响至关重要.
研究的目的:
- 评估乙醇补充剂在慢性缺血症中改善心肌功能的假设.
- 在缺血性心肌模型中评估日常乙醇摄入对血管化和 perfusion 的影响.
- 探索乙醇对微血管功能影响的潜在分子机制.
主要方法:
- 猪模型的慢性心肌缺血是建立使用ameroid收缩剂.
- 动物每天服用乙醇 (90毫升) 或糖糖 (80克) 补充剂,持续7周.
- 测量包括动脉密度,心肌输液和风险心肌中的微血管反应性.
主要成果:
- 与对照组相比,乙醇治疗的动物显著增加了动脉动脉密度 (3.11%与1.74%) 和心肌输液 (1.08与0.585的比率).
- 在乙醇组中,微血管反应性也显著增强.
- 分析表明了前血管和增殖活性,血管内皮生长因子升高和NOTCH通路信号.
结论:
- 适度的乙醇补充直接促进血管生成,并改善慢性缺血性心肌中的微血管功能.
- 这些发现表明,在中等剂量的乙醇时,心肌输液显著改善.
- 这项研究支持中度乙醇在改善缺血症患者血管健康方面具有直接的,有益的作用.
相关概念视频
01:17Ischemic Heart Disease: Overview
Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and narrowing...
Atherosclerosis, the primary malefactor, orchestrates this dangerous condition. It manifests as the accumulation of fatty deposits, akin to insidious plaques, within arterial walls. As time elapses, these plaques metamorphose, hardening and narrowing...
01:15Ischemic Stroke ll: Pathophysiology
An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...