کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2533363 1559053 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prostanoid EP1 receptor antagonist reduces blood–brain barrier leakage after cerebral ischemia
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب سلولی و مولکولی
پیش نمایش صفحه اول مقاله
Prostanoid EP1 receptor antagonist reduces blood–brain barrier leakage after cerebral ischemia
چکیده انگلیسی

Disruption of the blood–brain barrier (BBB) after cerebral ischemia is considered to be the initial step in the development of brain injuries, and an increase in the tyrosine phosphorylation of the tight junctional protein occludin has been shown to cause an increase in BBB permeability. Prostaglandin E2 (PGE2) appears to be associated with both toxic and protective effects on neuronal survival in vitro. However, it remains to be determined whether the prostanoid EP1 receptor is involved in the disruption of the BBB after cerebral ischemia. So we examined the effect of a prostanoid EP1 receptor antagonist, SC51089, on BBB leakage and tyrosine phosphorylation of occludin after cerebral ischemia. We demonstrated that SC51089 attenuated the increase in the tyrosine phosphorylation of occludin in isolated brain capillaries, which was coincident with a decrease in BBB leakage. These results suggest that the prostanoid EP1 receptor is involved in the tyrosine phosphorylation of occludin at tight junction, which may lead to disruption of the BBB and be linked to the development of cerebral infarctions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Pharmacology - Volume 640, Issues 1–3, 25 August 2010, Pages 82–86
نویسندگان
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