NDLI: Intrauterine Hypoxia-Ischemia Alters Expression of the NMDA Receptor in the Young Rat Brain

Content Provider	Springer Nature Link
Author	Cai, Zhengwei Rhodes, Philip G.
Copyright Year	2001
Abstract	Effects of intrauterine hypoxia-ischemia (HI) on expression of the NMDA receptor subunits as well as on [$^{3}$H]MK-801 binding of the NMDA receptor were studied in 1-day to 30-day old rat brain. Intrauterine HI conditions were achieved on gestation day 17 by clamping the uterine vasculature for 30 min followed by removal of the clamps to permit reperfusion. As determined by reverse-transcriptase polymerase chain reaction, prenatal HI significantly reduced mRNA expression of the NR1 subunit of the NMDA receptor in the hippocampus of 4, 8, and 30-day old rat brains. NR2A and NR2B subunit mRNAs were expressed in the hippocampus and the cortex of both the control and the prenatal HI rat brains. Intrauterine HI did not significantly affect expression of either the NR2A or NR2B subunit mRNA. Consistent with the RT-PCR data, protein expression of the NR1 subunit in the hippocampus, but not the cortex, of 21-day old prenatal HI rat brains was significantly decreased as compared to the control rat brain. Intrauterine HI also significantly reduced binding affinity, but not the number of binding sites, of the NMDA receptor to [$^{3}$H]MK-801, a noncompetitive antagonist of the NMDA receptor, in the hippocampus of 21-day old rat brain. The overall results suggest that prenatal HI-induced reduction of NR1 expression and the altered binding ability of the NMDA receptor in the young rat brain may contribute to other long-lasting effects of intrauterine HI that we reported previously.
Starting Page	487
Ending Page	495
Page Count	9
File Format	PDF
ISSN	03643190
Journal	Neurochemical Research
Volume Number	26
Issue Number	5
e-ISSN	15736903
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2001-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Neurosciences Neurology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Biochemistry Cellular and Molecular Neuroscience

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