期刊
MOLECULAR NEUROBIOLOGY
卷 59, 期 6, 页码 3649-3664出版社
SPRINGER
DOI: 10.1007/s12035-022-02811-9
关键词
GLP-1R agonist; Wnt/beta-catenin signaling pathway; Tissue plasminogen activator; Ischemic stroke; Hemorrhagic transformation; Blood-brain barrier
资金
- National Natural Science Foundation of China [81801174]
This study found that the glucagon-like peptide-1 receptor (GLP-1R) agonist exendin-4 (EX-4) has a protective effect against hemorrhagic transformation (HT) after ischemic stroke. The study showed that EX-4 attenuated neurological deficits, brain edema, infarct volume, blood-brain barrier (BBB) disruption, and HT induced by thrombolytic therapy with tissue plasminogen activator (tPA). The protective effect of EX-4 was mediated by activating the Wnt/beta-catenin signaling pathway and suppressing reactive oxygen species (ROS) production and matrix metalloproteinase-9 (MMP-9) activation.
Tissue plasminogen activator (tPA) is recommended by the FDA to dissolve intravascular clots after acute ischemic stroke (AIS). However, it may contribute to hemorrhagic transformation (HT). The Wnt/beta-catenin signaling pathway plays an important role in regulating the blood-brain barrier (BBB) formation in the central nervous system. We explored whether glucagon-like peptide-1 receptor (GLP-1R) agonist exendin-4 (EX-4) reduces the risk of HT after rtPA treatment via the Wnt/beta-catenin pathway by using a rat transient middle cerebral artery occlusion (MCAO) model in vivo and an oxygen-glucose deprivation plus reoxygenation (OGD/R) model in vitro. Our results showed that EX-4 attenuated neurological deficits, brain edema, infarct volume, BBB disruption, and rtPA-induced HT in ischemic stroke. EX-4 suppressed the production of ROS and the activation of MMP-9 to protect the integrity of the BBB by activating the Wnt/beta-catenin signaling pathway. PRI-724, a selective inhibitor of beta-catenin, was able to reverse the therapeutic effect of EX-4 in vivo and in vitro. Therefore, our results indicate that the GLP-1R agonist may be a potential therapeutic agent to decrease the risk of rtPA-induced HT after ischemic stroke via the Wnt/beta-catenin signaling pathway.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据