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.
journal_name
Neuropharmacologyjournal_title
Neuropharmacologyauthors
Golan MH,Mane R,Molczadzki G,Zuckerman M,Kaplan-Louson V,Huleihel M,Perez-Polo JRdoi
10.1016/j.neuropharm.2009.07.028subject
Has Abstractpub_date
2009-10-01 00:00:00pages
511-22issue
5-6eissn
0028-3908issn
1873-7064pii
S0028-3908(09)00247-0journal_volume
57pub_type
杂志文章abstract：:P2Y1 receptors mediate nerve mediated purinergic inhibitory junction potentials (IJP) and relaxations in the gastrointestinal (GI) tract in a wide range of species including rodents and humans. A new P2Y1 antagonist, with a non-nucleotide structure, BPTU, has recently been described using X-ray crystallography as the ...
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