Clinical Trials Logo

Clinical Trial Summary

The proposed 2-week, double-blind, crossover, proof of concept study aims to measure and manipulate core neurochemical (i.e., dysregulated brain GABA/glutamate homeostasis) and neurobehavioral (i.e., elevated impulsivity) dysfunctions characteristic of individuals with cannabis use disorder (CUD) and Bipolar Disorder (BD), using a medication that has been shown to increase cortical GABA (i.e., gabapentin) levels in past research, and to evaluate medication-related changes in response inhibition (go no-go) and cannabis cue reactivity functional Magnetic Resonance Imaging tasks, as well as cannabis use, mood symptoms (including anxiety and sleep), and impulsivity in individuals with CUD+BD.


Clinical Trial Description

Bipolar disorder (BD) is the Axis I condition most strongly associated with cannabis use disorder (CUD); there is a six-fold increase in the prevalence of CUD in individuals with BD relative to the general population. Individuals with co-occurring CUD and BD (CUD+BD) have substantially worse clinical outcomes than those with either BD or CUD alone. Response to mood stabilizing medications appears to be poor, yet little is known about optimal treatment for CUD+BD, as there have been no randomized medication trials for CUD+BD to date. Convergent evidence supports dysregulated brain γ-Aminobutyric acid (GABA)/glutamate homeostasis as a candidate target for pharmacological intervention in CUD+BD. Preclinical and clinical studies have demonstrated that CUD and BD are each associated with prefrontal GABA and glutamate disturbances and that impulsivity, a core neurobehavioral feature of both CUD and BD and a key Research Domain Criteria (RDoC) construct, is causally related to GABAergic/glutamatergic functioning. Gabapentin has been consistently shown in preclinical research to modulate GABA and glutamate transmission. In human Proton Magnetic Resonance Spectroscopy (1H-MRS) studies, both acute and chronic gabapentin dosing have been shown to increase brain GABA levels, however, few studies have investigated gabapentin effects on glutamate levels. Researchers propose that gabapentin may impact clinical outcomes in CUD+BD individuals both directly and indirectly through their impact on impulsivity. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03334721
Study type Interventional
Source Medical University of South Carolina
Contact
Status Completed
Phase Phase 2
Start date October 1, 2017
Completion date July 1, 2019

See also
  Status Clinical Trial Phase
Completed NCT05660434 - Using Aromatherapy in Substance Use Disorder N/A
Active, not recruiting NCT05338268 - Substance Use and Loneliness N/A
Completed NCT04098614 - Barriers to Substance Use Disorder Recovery N/A
Completed NCT03954184 - E-health Implementation (Iowa) N/A
Completed NCT03590106 - Cardiac Surgery Peer Recovery Support Program N/A
Recruiting NCT05118204 - Randomized Trial of Buprenorphine Microdose Inductions During Hospitalization Phase 4
Recruiting NCT06273228 - Parenting Young Children in Pediatrics N/A
Recruiting NCT05327504 - Written Exposure Therapy for Veterans With SUD and PTSD N/A
Terminated NCT03517111 - The Impact of a Parenting Intervention on Latino Youth Health Behaviors N/A
Completed NCT04284813 - Families With Substance Use and Psychosis: A Pilot Study N/A
Completed NCT04401215 - Technologically-Augmented Referrals to Mitigate Addiction Consequences N/A
Not yet recruiting NCT06187701 - Co-Active Therapeutic Theatre (Co-ATT) for Dual-Diagnosis Patients N/A
Not yet recruiting NCT06163651 - Evaluating a One-Year Version of the Parent-Child Assistance Program N/A
Recruiting NCT04296604 - Transcranial Direct Current Stimulation (tDCS) Neuromodulation of Executive Function Across Neuropsychiatric Populations N/A
Active, not recruiting NCT02382042 - Intensive Referral Intervention to Improve Substance Use Disorder Treatment Outcomes Among Rural and Highly Rural Veterans N/A
Terminated NCT01356667 - Drum-Assisted Therapy for Native Americans N/A
Completed NCT01237366 - Study Targeting Affect Regulation Phase 1/Phase 2
Completed NCT00708890 - Twelve Step Based Self-help Groups for Substance Related Disorders N/A
Active, not recruiting NCT04048850 - Zepatier in Patients With Substance Use
Recruiting NCT05976646 - Phase Ib/2a Drug-drug Interaction Study of a Combination of 45mg Dextromethorphan With 105 mg Bupropion Phase 1/Phase 2