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Cannabis Dependence, Continuous clinical trials

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NCT ID: NCT03204305 Completed - Clinical trials for Cannabis Use Disorder

Brain Imaging of Cannabinoid Receptors

Start date: September 14, 2017
Phase: Early Phase 1
Study type: Interventional

All participants will be healthy volunteers and all procedures will be completed for research purposes only. Two groups will be recruited, females who use cannabis (marijuana, MJ), and female who do not use cannabis (controls). Female MJ users will be enrolled in a protocol that includes an outpatient drug administration session and a 4-day/3-night inpatient stay on the Johns Hopkins Bayview Clinical Research Unit (CRU). During outpatient visits, MJ users will have an MRI, and complete MJ self-administration and cognitive performance sessions. MJ users will then reside on the CRU,and complete MJ abstinence, and self-report instruments for withdrawal discomfort. A positron emission tomography (PET) scan of brain cannabinoid type 1 receptors will also be completed. Non-users will complete MRI, PET imaging and cognitive testing under an outpatient protocol (no MJ administration).

NCT ID: NCT00798109 Completed - Schizophrenia Clinical Trials

Effect of Motivational Therapy on Schizophrenia With Cannabis Misuse

SCHIZOCAN
Start date: November 2008
Phase: N/A
Study type: Interventional

Schizophrenia is a severe mental illness with a lifetime morbidity risk close to 1 %, involving both genetic and environmental risk factors. Prospective studies have shown that heavy use of cannabis in adolescence moderately increases the risk of developing schizophrenia. Many data have also suggested that the co-occurrence of cannabis abuse in patients with schizophrenia has a deleterious impact on the clinical outcome of schizophrenia. Cannabis abuse by schizophrenic patients is a significant public health problem for which there is no empirically validated treatment. We are presently studying the efficiency of motivational therapy on cannabis consumption in patients with schizophrenia.