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- W1973996073 abstract "Prenatal hypoxia ischemia is a major cause of neurodevelopmental impairment in the newborn, associated with risk for motor, behavioral and cognitive impaired outcomes. We used an established mouse model of maternal hypoxia to examine the immediate molecular responses of signaling pathways associated with both cell death and neurogenesis. We also characterized responses to maternal pre-treatment with MgSO(4). Maternal hypoxia at embryonic day 17 (E17) failed to trigger inflammation or cell death in fetal brain at 24 h after hypoxia. However, maternal hypoxia decreased levels of neuronal migration signaling: Reelin (53% of control), Disabled 1 (Dab1, 77% of control), and amyloid precursor protein (APP, 64% of control) 2 h after the insult. These changes persisted for 24 h. At later times, Reelin levels in hippocampi of newborns in the maternal hypoxia-treated group increased compared to controls. Full protection from maternal hypoxia effects on hippocampal Reelin levels resulted from maternal pre-treatment with MgSO(4). Hypoxia and MgSO(4) increased radial and lateral migration distance in the CA1 four days after the insult, while in the DG the hypoxia treatment alone increased migration. Maternal hypoxia and MgSO(4) pre-treatment also stimulated hippocampal expression of genes related to neurogenesis, such as BDNF and NeuroD4. Taken together, the long-term neurodevelopmental outcome of prenatal and perinatal hypoxia may depend on perturbation of developmental signals that affect neuronal migration." @default.
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- W1973996073 date "2009-10-01" @default.
- W1973996073 modified "2023-09-25" @default.
- W1973996073 title "Impaired migration signaling in the hippocampus following prenatal hypoxia" @default.
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- W1973996073 doi "https://doi.org/10.1016/j.neuropharm.2009.07.028" @default.
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