期刊
JOURNAL OF PSYCHOPHARMACOLOGY
卷 22, 期 3, 页码 262-269出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0269881107083816
关键词
schizophrenia; substance use disorders; cannabis; endogenous cannabinoids; anandamide; quetiapine
Disturbances in the endogenous cannabinoid (ECB) system in schizophrenia may contribute to their enhanced sensitivity to psychoactive substances, and the beneficial effects of second-generation antipsychotics for substance abuse in schizophrenia may involve modulatory effects on ECB. To verify these two assumptions, 29 patients (24 completers) with schizophrenia and substance use disorders (SUD) were treated with quetiapine for 12 weeks, and peripheral ECB levels were measured, using high-performance liquid chromatography/ mass spectrometry, in patients (weeks 0, 6 and 12) and 17 healthy volunteers. Baseline anandamide levels were significantly higher in patients, relative to controls. This result is consistent with studies describing ECB dysfunctions in schizophrenia. SUD parameters improved during treatment, but no changes in ECB occurred over time. Improvements in substance abuse were probably not mediated by modulatory effects of quetiapine on ECB. Lastly, baseline anandamide predicted endpoint SUD scores (alcohol/cannabis). Anandamide is a potential target for medications aimed at relieving SUD in schizophrenia.
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