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- W2012302714 abstract "Leukocytes contribute to the ischemia-reperfusion injury. Recent studies suggested endothelins could be important mediators for leukocyte activation in stroke. We tested if the endothelinA receptor antagonist BSF-208075 (ambrisentan) could reduce an ischemic lesion by modulation of leukocyte-endothelium interactions. Twenty-four gerbils underwent either a sham operation (n=6) or 15 min of bilateral carotid artery occlusion resulting in global cerebral ischemia. Ischemic animals received normal saline (n=6), 5 mg/kg BSF-208075 (n=6) or 30 mg/kg (n=6) administered intravenously at 10 min of reperfusion. Leukocytes rolling or adhering to endothelium were counted by intravital microscopy in parietal subsurface venules through a closed cranial window. BSF-208075 dose-dependently reduced postischemic leukocytes rolling (7.3+/-2.3 vs. 3.3+/-1.4 vs. 0.7+/-0.7 [n/100 microm/min]; p<0.05) and adhering (5.3+/-1.4 vs. 2.7+/-1.6 vs. 1.3+/-0.5 [n/100 microm/min]; p<0.05). Cerebral blood flow was not significantly changed by BSF-208075. Cortical neurons [n/mm2] in an area corresponding to the in vivo microscopy were dose-dependently preserved 7 days after ischemia (2456+/-687 vs. 3254+/-245 vs. 3780+/-168; p<0.05).Endothelins mediate leukocyte activation in ischemic stroke. The endothelinA receptor antagonist BSF-208075 administered during reperfusion reduces the postischemic leukocyte activation and causes neuroprotection." @default.
- W2012302714 created "2016-06-24" @default.
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- W2012302714 date "2007-07-01" @default.
- W2012302714 modified "2023-10-14" @default.
- W2012302714 title "EndothelinA receptor antagonist BSF-208075 causes immune modulation and neuroprotection after stroke in gerbils" @default.
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- W2012302714 doi "https://doi.org/10.1016/j.brainres.2007.04.047" @default.
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