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Synthesis and release of the potent vasoconstrictor peptide endothelin-1 (ET-1) increases following cerebral ischemia and has previously been shown to mediate the delayed hypoperfusion associated with transient global ischemia. In this study we assessed the impact of ET-1 on perfusion and infarct volume in a focal model of cerebral ischemia by use of the selective ETA receptor antagonist Ro 61-1790...
The effect of nitro-L-arginine (NLA), inhibitor of NO synthase, on ET-1 content in cerebrospinal fluid (CSF) and on the vascular system was investigated in global ischemia/reperfusion of Mongolian gerbils. The results indicate that NLA induced a prolonged (2–3-fold) increase of ET-1 concentration above that seen in the CSF of untreated animals during ischemia/reperfusion. Both the transient and prolonged...
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