Active clinical trials for "Marijuana Abuse"

Study Objectives: Primary reduction of pain and reduction in overall opioid utilization. Secondary improvement in overall patient well being, weight stabilization with increased appetite, improved oxygen saturation, improvement or prevention of nausea and vomiting. Study Rationale: To determine optimum use and dosing of medical marijuana (CBD:THC) for pain and symptom management. Study Population: This study specifically will enroll cancer and non-cancer patients as a primary diagnosis suffering from pain and having a terminal illness (defined as having less than 6 months to live) requiring end of life care.

The purpose of this study on volunteers is whether THC and short-living metabolites are suited to detect recent Cannabis smoking within urine doping control.

Increasing evidence suggests modulating effects of cannabinoids on time of onset, severity, and outcome of schizophrenia. Efforts to discover the underlying pathomechanism have led to the assumption of gene x environment interactions including premorbid genetical vulnerability and worsening effects of continuing cannabis use. For a main characteristic of psychoactive delta-9-tetrahydrocannabinol is its affinity to biological membranes, which are known to be disturbed in schizophrenia patients and genetic high-risk populations. Here we assess an hypothesised association between premorbid lipid disturbance and metabolic effects of external cannabinoids in schizophrenia. Intensity of niacin (methylnicotinate) skin flushing, indicating disturbed prostaglandin-mediated processes, is used as peripheral marker of lipid-arachidonic acid pathways and investigated in cannabis consuming and non-consuming schizophrenia patients and in healthy controls. Methylnicotinate is applied in three concentrations onto the forearm skin. Flush response is assessed in three minute intervals over 15 min using optical reflection spectroscopy.

The majority of past research on marijuana treatment has specifically targeted the alleviation of withdrawal symptoms. Minimal focus has been placed on how altering craving effects may play a role in treating marijuana addiction. The purpose of this study is to compare the effects of marijuana-related cues versus non marijuana-related cues in individuals both addicted and not addicted to marijuana. In turn, this may help establish a better understanding of the effects of marijuana cravings and may lead to improved treatments for marijuana dependence.

This study will recruit healthy volunteers who use cannabis infrequently. Each participant will attend the laboratory on five occasions: an initial visit to check that they are safe to join the study and four days of testing. Participants will be administered, in a randomized order, vaporized cannabis containing one of four different ratios of CBD:THC (0:1, 1:1, 2:1, 3:1). The cannabis administration will follow a standardised inhalation procedure using a medical-grade vaporizer device. Participants will complete a series of tasks measuring cognition, psychosis, anxiety and other subjective experiences. The study will be carried out at the NIHR-Wellcome Trust Clinical Research Facility at King's College Hospital.

Marijuana use has increased since its legalization in Canada and many believe that it may help patients that are experiencing chronic pain. The investigators want to assess if patients who have used marijuana chronically will need more medication to control their pain after they have undergone orthopedic trauma surgery (ex. Hip, femur, humerus fractures etc.). In this study, the investigators will identify chronic marijuana users (ie. those using for 3 months or more) who are undergoing orthopedic trauma surgery to assess how much pain medication they need post-operatively and compare this with non-users. The investigators will also evaluate their pain scores, pain medication use and other complications that they may have during or after their surgeries, including any nausea/vomiting, heart or breathing problems.

We have interviewed more than 120+ candidates and recruited 44 chronic marijuana users and 11 non-user healthy controls: 26 of the 44 MJ users actually participated in the study, 6 of the 26 MJ participants dropped out after their baseline magnetic resonance (MR) visits and the remaining 20 participants completed the study protocol, namely completed three MR visits for measurement of brain metabolites (baseline, day 7, and day 21); among the 11 healthy controls, 10 completed the study protocol. We are currently analyzing collected data and preparing manuscripts for peer reviewed journals.

The purpose of the study is to develop and test social media interventions to help young people increase well-being and reduce risky behaviors. The study will help researchers learn about ways to deliver wellness information in a way that is appealing and helpful to young people who use Snapchat.

The objective of this survey will be to evaluate the perception by the students (except for medical students, pharmacies) of community pharmacists concerning the management of cannabis consumption. We want to see if the student population perceives the pharmacist as the public health actor of choice, and if they would more easily turn to him or to another health professional (doctor, nurse) in case they need. Discussing possible problematic consumption or for a simple search for information. It will be assessed whether the pharmacist seems to be a good candidate and an element of choice when young adults want to take an intelligence approach to cannabis consumption.

Chronic cannabis consumption has been associated with poor psychosocial functioning that could be associated to cerebellar dysfunction. The cerebellum has a relevant role in adaptation processes and has a high density of cannabinoid 1 receptor (CB1R). Implicit motor learning is a cerebellum dependent function that can be measured with a visuomotor rotation task (VRT). The project aims to identify a sensitive and specific biomarker of cerebellum dysfunction in chronic cannabis users. The investigators would like to demonstrate that the visuomotor rotation paradigm is valid to measure and quantify such a dysfunction. A longitudinal prospective study with a 3 month follow-up is proposed. 3 groups will be included: 1) chronic cannabis users; 2) individuals with an alcohol use disorder; and 3) healthy controls. All groups will be matched by sex and age. Forty individuals will be included in each group. Individuals will be assessed at baseline, at first month and at 3-months of follow-up. Sociodemographic and clinical data will be recorded. Information on cannabis consumption will be registered using an App. Participants will do the visuomotor rotation task and answer three questionnaires: the Intrinsic Motivation Inventory, the Scale for the assessment and rating of ataxia (SARA) and the Harris tests for lateral dominance. The biomarker developed by this project will facilitate the detection of cerebellar alterations in chronic cannabis users, and will permit to quantify and monitor such alteration over time. The team's intention is to patent the proposed model and disseminate it in order to use it in clinical practice at both primary and specialized health centres.