在动脉中动脉样硬化的破坏下,内介介面损伤和偶然性炎症增加:对斑块脆弱性的影响
Pedro R Moreno1, K Raman Purushothaman, Valentin Fuster
1Linda and Jack Gill Heart Institute, University of Kentucky, Lexington 40511, USA. pmoreno@pop.uky.edu
Circulation
|May 30, 2002
概括
动脉硬性斑块破裂显示更多的内部弹性层 (IEL) 断裂和介质和附带层的变化. 这些发现表明,内介和偶然的变化有助于斑块的不稳定性.
科学领域:
- 心血管病理学心血管病理学
- 动脉样硬化研究 动脉样硬化研究
- 组织病理学 组织病理学
背景情况:
- 动脉样硬化斑块扩大以保持光线通透性,但这种补偿机制可能导致斑块脆弱和破裂.
- 斑块破坏可能涉及不仅仅是内脏疾病,潜在的贡献来自内脏介质接口,tunica media和adventitia.
研究的目的:
- 为了调查内部弹性层 (IEL) 破裂以及中介层和附带层的变化是否在被破坏的动脉样硬化斑块中比未被破坏的更为普遍.
主要方法:
- 使用计算机化平面测量和眼睛微观测量,对598个人类大动脉斑块的组织病理特征进行了系统定量.
- 根据AHA标准对斑块进行分类.
- 后勤回归分析,以确定纤维帽破坏的独立预测因素.
主要成果:
- 被破坏的斑块具有明显更大的斑块和脂质池面积.
- 在破裂的斑块中观察到内部弹性层 (IEL) 破裂的发生率更高.
- 中介和附带性炎症,中介纤维化和中介缩在破坏的斑块中显著增加,中介厚度减少.
结论:
- 与未被破坏的斑块相比,被破坏的动脉样硬化斑块表现出更高的IEL破裂频率,中间/前进性炎症,中间纤维化和缩.
- 这些内部介质界面和偶然变化与复杂动脉样硬化病变的进展和不稳定性有关.
- 需要进一步的研究来探索介质/冒险病理和内在动脉样硬化过程之间的相互作用.
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