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- W2020680765 abstract "In vitro studies suggest that glutamate receptor activation is important in the genesis of post-hypoxic preterm brain injury, but there are limited data on post-hypoxic N-methyl-D-aspartate (NMDA) receptor activation. We therefore examined an infusion of the specific, non-competitive NMDA receptor antagonist dizocilpine (2 mg kg(-1) bolus plus 0.07 mg kg(-1) h(-1) i.v.) from 15 min to 4 h after severe hypoxia-ischemia induced by umbilical cord occlusion for 25 min in fetal sheep at 70% of gestation. Dizocilpine suppressed evolving epileptiform transient activity in the first 6 h after reperfusion (2.3 +/- 0.9 versus 9.3 +/- 2.3 maximal counts min(-1), P < 0.05) and mean EEG intensity up to 11 h after occlusion (P < 0.05). Fetal extradural temperature transiently increased during the dizocilpine infusion (40.1 +/- 0.2 versus 39.3 +/- 0.1 degrees C, P < 0.05). After 3 days recovery, treatment was associated with a significant reduction in neuronal loss in the striatum (31 +/- 7 versus 58 +/- 2%, P < 0.05), expression of cleaved caspase-3 (111+/-7 versus 159 +/- 10 counts area(-1), P < 0.05) and numbers of activated microglia (57 +/- 9 versus 92 +/- 16 counts area(-1), P < 0.05); there was no significant effect in other regions or on loss of immature O4-positive oligodendrocytes. In conclusion, abnormal NMDA receptor activation in the first few hours of recovery from hypoxia-ischemia seems to contribute to post-hypoxic striatal damage in the very immature brain." @default.
- W2020680765 created "2016-06-24" @default.
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- W2020680765 date "2006-03-01" @default.
- W2020680765 modified "2023-09-27" @default.
- W2020680765 title "Suppression of post-hypoxic-ischemic EEG transients with dizocilpine is associated with partial striatal protection in the preterm fetal sheep" @default.
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- W2020680765 doi "https://doi.org/10.1016/j.neuropharm.2005.10.017" @default.
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