在患有冠心病的患者中,AT1受体自身抗体的功能子类
Ziyu Yang1, Tao Sun2, Pengli Wang1
1Department of Physiology & Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing 100069, PR China; Beijing Key Laboratory of Metabolic Disorder Related Cardiovascular Disease, Capital Medical University, Beijing 100069, PR China.
Biochemical pharmacology
|September 20, 2024
概括
针对血管激素II型1受体 (AT1-AA) 的自身抗体被分为四个功能子类. 特定的子类与凝血相关,预测严重的冠心病 (CHD),并影响细胞活力,帮助诊断和治疗.
科学领域:
- 心血管免疫学心血管免疫学
- 这是一种自身免疫力.
- 受体生物学受体生物学
背景情况:
- 在冠状动脉心脏病 (CHD) 患者中发现了向 angiotensin II 1 型受体 (AT1R-ECII) 的自身抗体 (AT1-AA).
- 功能多样性和AT1-AA的临床影响仍然在很大程度上未被探索.
- 了解AT1-AA子类对于揭示它们在心血管病理学中的作用至关重要.
研究的目的:
- 将针对血管激素II型1受体 (AT1R-ECII) 的自身抗体 (AT1-AA) 分类为功能子类.
- 调查AT1-AA子类与冠心病 (CHD) 患者的临床指标之间的相关性.
- 评估不同AT1-AA子类对心血管细胞和疾病严重性的预测价值和功能影响.
主要方法:
- 在306名心血管疾病患者的血清中量化AT1-AA水平.
- 从患者血清 (n=127) 中净化AT1-AA,并根据小鼠动脉光滑肌细胞 (MASMCs) 内细胞内 ([Ca2+]i) 反应进行分类.
- 与凝血参数,白细胞计数,胆酸水平和用于CHD严重程度预测的逻辑回归的相关性分析. 建立一个AT1-AA阳性老鼠模型.
主要成果:
- 根据[Ca2+]i反应模式确定了四种功能性AT1-AA子类 (H1-,H2-,H3-,H4-AT1-AA).
- H1-AT1-AA与内源凝血有正相关;H2-AT1-AA与外源凝血有正相关.
- H2-AT1-AA预测了严重的心脏病. H1-和H2-AT1-AA对MASMCs具有细胞毒性,而H4-AT1-AA增加了细胞活力.
结论:
- 将AT1-AA分为功能子类的分类为我们提供了关于它们在CHD中的多样性作用的新见解.
- 特定的AT1-AA子类与凝血,炎症和细胞活力有明显的相关性.
- 功能AT1-AA子类的表征为改善心脏病患者的临床评估和向治疗提供了潜在的基础.
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