Abstract
Group II metabotropic glutamate receptors (mGluR2 and mGluR3) are implicated in schizophrenia. We characterized mGluR2 and 3 mRNA in the human prefrontal cortex (PFC) and mesencephalon, and then compared cases with schizophrenia to matched controls. In the human brain, both receptors were expressed in the PFC and, unlike the rodent, in dopaminergic (DA) cell groups. In schizophrenia, we found significantly higher levels of mGluR2 mRNA in the PFC white matter. The expression of mGluR2, 3 in DA cells provide a mechanism for glutamate to modulate dopamine release in the human brain and this species-specific difference may be critical to understanding rodent models in schizophrenia.
Publication types
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Research Support, N.I.H., Intramural
MeSH terms
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Adolescent
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Adult
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Aged
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Corpus Striatum / metabolism
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Corpus Striatum / physiopathology
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Dopamine / metabolism*
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Female
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Gene Expression Regulation / genetics
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Glutamic Acid / metabolism*
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Humans
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Male
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Mesencephalon / metabolism*
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Mesencephalon / physiopathology
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Middle Aged
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Neural Pathways / metabolism
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Neural Pathways / physiopathology
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Prefrontal Cortex / metabolism*
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Prefrontal Cortex / physiopathology
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RNA, Messenger / metabolism
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Receptors, Metabotropic Glutamate / genetics*
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Schizophrenia / genetics*
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Schizophrenia / metabolism*
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Schizophrenia / physiopathology
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Substantia Nigra / metabolism
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Substantia Nigra / physiopathology
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Ventral Tegmental Area / metabolism
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Ventral Tegmental Area / physiopathology
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Young Adult
Substances
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RNA, Messenger
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Receptors, Metabotropic Glutamate
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metabotropic glutamate receptor 2
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metabotropic glutamate receptor 3
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Glutamic Acid
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Dopamine