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Neuroreport. 1999 Feb 25;10(3):461-5.

NR2B-containing NMDA receptors are up-regulated in temporal cortex in schizophrenia.

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Merck Sharp & Dohme Neuroscience Research Laboratories, Harlow, Essex, UK.


Saturation analyses of [3H]L-689,560, [3H]CGP 39653 and NMDA-specific [3H]ifenprodil binding revealed an equivalent increase (0.7 pmol/mg) in the number of [3H]L-689,560 and [3H]ifenprodil binding sites in superior temporal cortex (BA22) from drug-treated chronic schizophrenic patients and control subjects. No differences were observed between control and schizophrenic subjects for [3H]CGP 39653 binding in BA22, or for any of the radioligands binding to pre-motor cortex (BA6). Since [3H]L-689,560, [3H]CGP 39653 and [3H]ifenprodil label the glycine, glutamate and ifenprodil sites of the NMDA receptor complex, which are associated with NR1, NR1/NR2A and NR1/NR2B subunits respectively, our findings suggest that NR2B-containing receptors are selectively up-regulated in superior temporal cortex in schizophrenia.

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