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Ischemic Heart Disease: Overview01:17

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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.
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Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
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Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
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Management of atherosclerosis involves an integrated strategy encompassing pharmacological treatment, surgical interventions, lifestyle changes, and nutrition therapy to address the multifactorial nature of the disease.Pharmacological TherapyA cornerstone of atherosclerosis management is the use of pharmacological agents. Statins, such as atorvastatin, are pivotal in inhibiting HMG-CoA reductase, an enzyme that catalyzes an initial step in cholesterol synthesis in the liver. This reduction in...
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相关实验视频

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En Face Detection of Nitric Oxide and Superoxide in Endothelial Layer of Intact Arteries
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基因减少抗氧化保护和增加缺血性心脏病风险:哥本哈根城市心脏研究

Klaus Juul1, Anne Tybjaerg-Hansen, Stefan Marklund

  • 1Department of Clinical Biochemistry, Herlev University Hospital, Herlev Ringvej 75, DK-2730 Herlev, Denmark.

Circulation
|December 10, 2003
PubMed
概括
此摘要是机器生成的。

一种常见的基因变体,细胞外超氧化物脱酶 (EC-SOD) -R213G,增加了缺血性心脏病 (IHD) 的风险. 对EC-SOD-R213G的基因测试提供了超越当前生物标志物的IHD风险预测.

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科学领域:

  • 心血管遗传学 心血管遗传学
  • 动脉样硬化症的生物标志物
  • 在疾病中的酶功能.

背景情况:

  • 细胞外超氧化脱酶 (EC-SOD) 是动脉壁中的一个关键的抗氧化酶.
  • 一种常见的R213G替代物增加了血EC-SOD,但可能降低了动脉EC-SOD,可能加速动脉样硬化.
  • 研究R213G变体在缺血性心脏病 (IHD) 倾向中的作用.

研究的目的:

  • 测试主要假设,即EC-SOD-R213G使个体容易患上IHD.
  • 为了确定EC-SOD-R213G是否提供了超出血EC-SOD和抗-oxLDL自身抗体的IHD预测价值.

主要方法:

  • 基于人口的前性研究 (n=9188),对发生的IHD进行了23年的随访.
  • 在独立的IHD (n=943) 和缺血性脑血管疾病 (ICVD) (n=617) 病例群体中进行横截面重新测试.
  • 嵌套病例对照研究 (n=956例IHD病例,n=956对照) 用于测试二次假设.

主要成果:

  • 在R213G异构菌中,IHD的年龄和性别调整后的相对风险为1.5 (95% CI,1.1-2.1).
  • 重复测试显示,IHD的调整几率为1.4,ICVD的调整几率为1.7.
  • 对血EC-SOD进行调整后,IHD的几率比率为9.2;对于抗-oxLDL抗体,它是2.5.

结论:

  • 对于EC-SOD-R213G变异的异构性与更高的内脏病风险有关.
  • 与目前的生物标志物相比,EC-SOD-R213G的基因测试提供了IHD的增强预测能力.