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- W1998716914 abstract "Polymorphonuclear leukocytes (PMNs) were reported to contribute to ischemia-reperfusion-induced brain damage. The present work examined whether PMN infiltration is deleterious in a severe model of transient focal cerebral ischemia and in which part PMNs contribute to oxidative stress and nitric oxide (NO) production. A 20-min occlusion of the left middle cerebral artery and both common carotid arteries was performed in rats. Infarction was maximal 24 h after reperfusion, while accumulation of PMNs in infarcted tissue was not significant before 48 h. Moreover, neutropenia induced by vinblastine (0.5 mg/kg iv) significantly decreased by 60-80% PMN infiltration 48 h after reperfusion but did not reduce the infarct volume. Thus PMNs do not contribute to cerebral injury in our model. Furthermore, decreased PMN infiltration modified neither oxidative stress evaluated by glutathione concentrations nor NO synthase activities 48 h after reperfusion. In conclusion, our results suggest that PMNs are not involved in severe cerebral ischemia and that anti-PMN strategies may be inefficient in some pathological conditions." @default.
- W1998716914 created "2016-06-24" @default.
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- W1998716914 date "2003-08-01" @default.
- W1998716914 modified "2023-09-30" @default.
- W1998716914 title "Neutrophils do not contribute to infarction, oxidative stress, and NO synthase activity in severe brain ischemia" @default.
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- W1998716914 doi "https://doi.org/10.1016/s0014-4886(03)00106-7" @default.
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