血栓形成是否在缺陷性中风和脑小血管疾病中起因作用?
Fatemeh Koohi1, Eric L Harshfield1, Alexey Shatunov1
1Department of Clinical Neurosciences, Stroke Research Group, University of Cambridge, United Kingdom.
Stroke
|March 25, 2024
概括
对静脉血栓的遗传倾向增加了心血管栓塞和大动脉中风的风险,但不是缺口中风 (LS) 或脑小血管疾病 (cSVD) 标志物. 这表明抗血栓治疗对LS可能不那么有效.
科学领域:
- 遗传学 遗传学 是一个
- 神经学 神经学
- 心血管医学 心血管医学
背景情况:
- 血栓塞栓症在性中风 (LS) 发病过程中的作用,这是大脑小血管疾病 (cSVD) 的结果,仍在争论中.
- 目前对LS的二次预防策略通常涉及抗血小板治疗,但在明确的患者队列中,强有力的试验证据有限.
研究的目的:
- 通过两样本的孟德尔随机化方法,研究LS和cSVD中改变抗凝的因果作用.
- 评估静脉血栓形成的遗传倾向与不同中风亚型和cSVD标志物的风险之间的关联.
主要方法:
- 从一个大型全基因组关联研究中利用了119个与静脉血栓相关的遗传变异作为仪器变量.
- 使用来自GIGASTROKE联盟的缺血性中风亚型 (心血管,大动脉,LS) 的遗传关联数据.
- 包括磁共振成像证实LS病例的数据,并分析了与白质超强度和cSVD扩散张力成像指标的关联.
主要成果:
- 对静脉血栓的遗传倾向与任何缺血性中风,心血栓性中风和大动脉中风的几率增加显著相关.
- 在GIGASTROKE或MRI确认的队列中,对静脉血栓形成的遗传风险和缺口性中风 (LS) 之间没有发现显著的关联.
- 基因预测的静脉血栓形成风险与脑小血管疾病 (cSVD) 的成像标志物无关.
结论:
- 改变的血栓形成似乎是心血管栓塞和大动脉中风的因果因素,但不是LS或cSVD.
- 这些发现表明,抗血栓性药物可能降低了对治疗cSVD的疗效.
- 需要进行进一步的临床试验,以评估各种抗血栓治疗方案的有效性,特别是在特征良好的LS患者队列中.
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