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Cannabis as a cause of psychosis: An ecogenetic study linking cannabis-induced dopamine response to psychotic mechanisms and experiences

Cannabis as a cause of psychosis: An ecogenetic study linking cannabis-induced dopamine response to psychotic mechanisms and experiences - Acute effects of cannabis on dopamine response in the brain

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
NL-OMON
Registry ID
NL-OMON33989
Enrollment
45
Registered
2008-05-23
Start date
2009-05-04
Completion date
Unknown
Last updated
2024-05-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

schizophrenia and psychosis

Interventions

Participants will be asked to inhale THC and placebo in one session and to subsequently undergo a PET scans. In addition they will be asked to undergo a total of 1 MRI scan.

Sponsors

Universiteit Maastricht
Lead Sponsor

Eligibility

Age
18 Years to 99 Years

Inclusion criteria

Inclusion criteria: 18-50 years of age life-time use of cannabis without having experienced negative effects BMI between 18.5 and 27 diagnosis of schizophrenia according to DSM-IV (only patients) having given informed consent (written and orally)

Exclusion criteria

Exclusion criteria: head trauma severe renal or liver dysfunction alcohol use in excess of 5 units per day weekly use of illicit drugs (other than cannabis) pregnancy breast-feeding personal or family history of psychosis or use of antipsychotic medication (only valid for healthy participants who are no first degree relatives of patients with schizophrenia)

Design outcomes

Primary

MeasureTime frame
(i) Dopamine response after THC and placebo (ii) Psychotic experiences in response to THC and placebo as measured with i) computer-assisted tasks and ii) clinical interviewing

Secondary

MeasureTime frame
(i) genotype (on the basis of DNA analyses)

Countries

Netherlands

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP)