Molecular insights and therapeutic targets for blood-brain barrier disruption in ischemic stroke: Critical role of matrix metalloproteinases and tissue-type plasminogen activator

被引:210
作者
Jin, Rong
Yang, Guojun [2 ]
Li, Guohong [1 ]
机构
[1] LSU Hlth Sci Ctr, Vasc Biol & Stroke Res Lab, Dept Neurosurg, Shreveport, LA 71130 USA
[2] Ningbo Univ, Sch Med, Dept Internal Med, Ningbo 315122, Zhejiang, Peoples R China
基金
美国国家卫生研究院;
关键词
Blood-brain barrier; Neurovascular unit; tPA; MMPs; Ischemic stroke; Signaling pathways; JUNCTIONAL ADHESION MOLECULE; MIDDLE CEREBRAL-ARTERY; TIGHT-JUNCTION; PROTEIN-C; HEMORRHAGIC TRANSFORMATION; TYROSINE PHOSPHORYLATION; NEUTROPHIL INFILTRATION; OXIDATIVE STRESS; IN-VITRO; NEURONAL DEGENERATION;
D O I
10.1016/j.nbd.2010.03.008
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Blood-brain barrier (BBB) disruption, mediated through matrix metalloproteinases (MMPs) and other mechanisms, is a critical event during ischemic stroke. Tissue plasminogen activator (tPA) is the only FDA-approved thrombolytic therapy for acute ischemic stroke, but the efficacy and safety of its therapeutic application are limited by narrow treatment time windows and side effects. Thus, there is a pressing need to develop combinational therapy that could offset tPA side effects and improve efficacy in clinical practice. Recent experimental studies indicate that tPA has previously unidentified functions in the brain beyond its well-established thrombolytic activity, which might contribute to tPA-related side effects through MMPs (mainly MMP-9) and several signaling pathways involved in LDL receptor-related protein (LRP), activated protein C (APC) and protease-activated receptor 1 (PAR-1), platelet-derived growth factor C (PDGF-C), and N-methyl-D-aspartate (NMDA) receptor. Therapeutic targeting of MMPs and/or tPA-related signaling pathways might offer promising new approaches to combination therapies for ischemic stroke. This review provides an overview of the relationship between structural components and function of the BBB/neurovascular unit with respect to ischemic stroke. We discuss how MMPs and tPA contribute to BBB disruption during ischemic stroke and highlight recent findings of molecular signaling pathways involved in neurotoxicity of tPA therapy. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码:376 / 385
页数:10
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