期刊
PSYCHIATRY RESEARCH
卷 179, 期 2, 页码 139-146出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.psychres.2009.03.034
关键词
GABA(A) receptor; Muscarinic receptor; APDs; Benzodiazepine; Cortex; Schizophrenia; Postmortem CNS
类别
资金
- NHMRC [192399, 509333]
- NIH [R01 MH069696]
- Woods Family Trust
- Rebecca L. Cooper Medical Research Foundation
- Victorian State Government
Changes in cortical gamma-aminobutyric acid A (GABA(A)) receptors and muscarinic receptors have been reported in schizophrenia, a disorder treated with antipsychotic drugs and benzodiazepines. As there is a reported functional relationship between the GABAergic and cholinergic systems in the human central nervous system we have investigated whether there are changes in the GABA(A) and muscarinic receptors in the cortex of subjects from APD-treated subjects with schizophrenia and whether changes were different in subjects who had also received benzodiazepine treatment. We failed to show any strong correlations between changes in GABA(A) and muscarinic receptors in the CNS of subjects with schizophrenia. We showed that subjects with schizophrenia treated with benzodiazepines had lower levels of muscarinic receptors; which was not the case in rats treated with APDs, benzodiazepines or a combination of both drugs. Further, the benzodiazepine binding site, but not the muscimol binding site, was decreased in the parietal cortex of subjects with schizophrenia independent of benzodiazepine status at death. These data would therefore support our previously stated hypotheses that changes in the cortical cholinergic and GABAergic systems are involved in the pathophysiology of schizophrenia. (C) 2009 Elsevier Ireland Ltd. All rights reserved.
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