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- W2015479989 abstract "A major complication of recanalization therapy after an acute arterial occlusion in brain is hemorrhagic transformation (HT). Although it is known that prolonged ischemia is important in the development of HT, the role of reperfusion in ischemia–reperfusion induced HT is less well studied. To address the effect of reperfusion on HT, we assessed the incidence and severity of hemorrhage in rats after 5 h of middle cerebral artery occlusion (MCAO) followed by 19-hour reperfusion compared to rats with permanent occlusion (PMCAO) at the same 24-hour time point. The incidence and amount of hemorrhage, neurological function, and mortality rates were measured. MCAO (5 h) with 19-hour reperfusion was associated with a significantly higher incidence of cortical hemorrhage compared to PMCAO (81.8% vs 18.2%, p < 0.05). Hemorrhage scores were higher in the 5-hour MCAO/reperfusion group compared to PMCAO rats (17.6 ± 11.5 vs 2.4 ± 5.3 in cortex, 20.4 ± 4.6 vs 9.7 ± 4.5 in striatum, p < 0.01). Neurological function was worse in the ischemia–reperfusion group compared to PMCAO (p < 0.05) and mortality rates were insignificantly higher in the 5-hour MCAO/reperfusion group vs PMCAO group (54.5% vs18.1%; p < 0.08). The results suggest that reperfusion after prolonged ischemia is associated with increased hemorrhagic transformation and neurological deterioration as compared to permanent ischemia. Whether pharmacological treatments prior to reperfusion attenuate post-ischemic HT requires further study." @default.
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- W2015479989 date "2009-04-01" @default.
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- W2015479989 title "Mechanical reperfusion is associated with post-ischemic hemorrhage in rat brain" @default.
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- W2015479989 doi "https://doi.org/10.1016/j.expneurol.2008.12.020" @default.
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