离子对tPA诱导的中风下的出血转变的影响
Valentina A Babenko1,2, Elmira I Yakupova1, Irina B Pevzner1,2
1A.N. Belozersky Research Institute of Physico-Chemical Biology, Lomonosov Moscow State University, 119991 Moscow, Russia.
Biomedicines
|June 27, 2024
概括
(Li+) 治疗改善了用组织等离子素激活剂 (tPA) 治疗急性缺血性中风后的结果. +增强了血脑屏障的完整性,并降低了有害的酶活性,提供了一个潜在的神经保护策略.
科学领域:
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
- 生物化学 生物化学
背景情况:
- 组织等离子素激活剂 (tPA) 用于急性缺血性中风,但具有出血转化 (HT) 的风险.
- 盐具有神经保护性,但它们对HT机制的影响尚不清楚.
研究的目的:
- 研究 (Li+) 对tPA诱导的大脑和内皮细胞的变化的影响.
- 探索Li+调节血脑屏障完整性和中风后的矩阵金属蛋白酶 (MMP) 活性.
主要方法:
- 利用光血栓形成 (PT) 诱导的大脑缺血症和氧气-葡萄糖剥夺 (OGD) 模型.
- 评估了神经系统缺陷,病变体积,血脑屏障的透性以及内皮细胞中的MMP-2/9水平.
- 在OGD条件下研究了Li+和LiCl对tPA治疗细胞的影响.
主要成果:
- 单独使用tPA并没有恶化病变体积或神经缺陷,但损害了血脑屏障的完整性.
- 脑卒中后的Li+治疗改善了神经状态,并恢复了血脑屏障的完整性.
- 在OGD期间,tPA在内皮细胞中增加了MMP-2/9水平,这种效应被LiCl预化消除了.
- + 影响了 tPA 处理的内皮细胞的糖解,可能会影响 MMP 表达.
结论:
- 在中风模型中显示出缓解tPA治疗不良影响的潜力.
- +增强了血脑屏障的完整性,并抑制了tPA诱导的MMP激活,这表明了新的治疗途径.
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