ArticleNeurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology2013
t-PA reduces ischemic impairment of blood-brain barrier by strengthening endothelium junction.
Article in Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Cerebral ischemic stroke is one of the most prevalent diseases in senior individuals. Its therapeutical strategies include anticoagulation, thrombolysis and cell protection. Tissue-type plasminogen activator (t-PA) that interacts with thrombin for the lysis of thrombosis is widely used to treat stroke patients in early stage. The mechanism of action of t-PA is not clear. Here, we report a novel role of t-PA in protecting blood-brain barrier and its potential mechanisms. In a model of the blood-brain barrier with human umbilical vascular epithelium cells, we found that t-PA in low concentrations prevented the impairment of the blood-brain barrier as a result of oxygen and glucose deprivation. This protection was fulfilled by strengthening the junctions among vascular endothelia and by upregulating the productions of vascular endothelium growth factor and of zonula occludens-1. Therefore, t-PA may strengthen the junctions of vascular endothelia in the blood-brain barrier to improve the microenvironment of brain cells and, in turn, the outcome of stroke patients.
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