AUTHOR=Desfossés Joelle , Stip Emmanuel , Ait Bentaleb Lahcen , Lipp Olivier , Chiasson Jean-Pierre , Furtos Alexandra , Venne Karine , Kouassi Edouard , Potvin Stephane TITLE=Plasma Endocannabinoid Alterations in Individuals with Substance Use Disorder are Dependent on the “Mirror Effect” of Schizophrenia JOURNAL=Frontiers in Psychiatry VOLUME=3 YEAR=2012 URL=https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2012.00085 DOI=10.3389/fpsyt.2012.00085 ISSN=1664-0640 ABSTRACT=
Schizophrenia is a complex psychiatric disorder strongly associated with substance use disorders. Theoretically, schizophrenia and SUD may share endocannabinoid alterations in the brain reward system. The main endocannabinoids, anandamide, and 2-arachidonoylglycerol, are lipids which bind cannabinoid receptors. Oleoylethanolamide (OEA), a fatty-acid ethanolamide, binds peroxisome proliferator-activated receptors. The endocannabinoid system has been shown to be impaired in schizophrenia, and recently, our group has shown that schizophrenia patients with SUD have elevated peripheral levels of anandamide and OEA that do not normalize after 3-month treatment with quetiapine. Objective For comparative purposes, we aimed to measure endocannabinoids in non-psychosis substance abusers and non-abusing schizophrenia patients. Methods Using liquid chromatography and mass spectrometry, we measured plasma levels of anandamide and OEA in non-psychosis SUD patients, non-abusing schizophrenia patients, and healthy controls. In an open-label manner, all patients received 12-week treatment with quetiapine. Results Anandamide and OEA were reduced in substance abusers without schizophrenia, relative to healthy controls (