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Université de Fribourg

Long-term effects of cannabis on brain structure

Battistella, Giovanni ; Fornari, Eleonora ; Annoni, Jean-Marie ; Chtioui, Haithem ; Dao, Kim ; Fabritius, Marie ; Favrat, Bernard ; Mall, Jean-Frédéric ; Maeder, Philippe ; Giroud, Christian

In: Neuropsychopharmacology, 2014, p. -

The dose-dependent toxicity of the main psychoactive component of cannabis in brain regions rich in cannabinoid CB1 receptors is well known in animal studies. However, research in humans does not show common findings across studies regarding the brain regions that are affected after long-term exposure to cannabis. In the present study, we investigate (using Voxel-based Morphometry) gray matter...

Université de Fribourg

THCCOOH concentrations in whole blood: Are they useful in discriminating occasional from heavy smokers?

Fabritius, Marie ; Favrat, Bernard ; Chtioui, Haithem ; Battistella, Giovanni ; Annoni, Jean-Marie ; Appenzeller, Monique ; Dao, Kim ; Fornari, Eleonora ; Lauer, Estelle ; Mall, Jean-Frédéric ; Maeder, Philippe ; Mangin, Patrice ; Staub, Christian ; Giroud, Christian

In: Drug Testing and Analysis, 2013, vol. 6, no. 1-2, p. 155–163

Some forensic and clinical circumstances require knowledge of the frequency of drug use. Care of the patient, administrative, and legal consequences will be different if the subject is a regular or an occasional cannabis smoker. To this end, 11-nor-9-carboxy-Δ9-tetrahydrocannabinol (THCCOOH) has been proposed as a criterion to help to distinguish between these two groups of users. However, to...