PET Imaging of Cannabinoid CB1 Receptors Using [11C]MePPEP
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|ClinicalTrials.gov Identifier: NCT00598390|
Recruitment Status : Completed
First Posted : January 21, 2008
Last Update Posted : March 8, 2018
|Condition or disease||Intervention/treatment||Phase|
|Healthy||Drug: [11C]MePPEP||Phase 1 Phase 2|
MePPEP is a ligand that is highly selective for the cannabinoid type 1 (CB1) receptor. This receptor is considered the most common G-coupled protein receptor in the brain (Pacher et al., 2006). The CB1 receptor is the site of action of Delta-9-tetrahydrocannbinol (THC), the active compound in marijuana, and is found primarily on the presynaptic terminals of dopaminergic, glutamatergic, GABAergic neurons (Howlett et al., 2002). The function of the CB1 receptor is not entirely clear; however, it has been implicated in several neurological and psychiatric disorders, and a selective inverse agonist, rimonabant, is currently in use in Europe for the treatment of obesity (Van Gaal et al., 2005). [11C]MePPEP was developed to enhance our understanding of the in vivo characteristics of the CB1 receptor (e.g., receptor density and receptor occupancy with pharmaceuticals).
The purpose of this protocol is to establish an accurate method to measure CB1 receptor levels in brain by performing test/retest brain imaging studies. The results of this overall study are required to apply this PET ligand in various neurological and psychiatric disorders in the future.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||19 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||PET Test/Retest Brain Imaging of Cannabinoid CB1 Receptors Using [11C]MePPEP|
|Study Start Date :||January 8, 2008|
|Primary Completion Date :||January 22, 2013|
|Study Completion Date :||January 22, 2013|
- Reproducibility of novel PET tracer for CB1 in brain imaging.
- Distribution and variance of CB1 receptors in the brain of healthy controls.
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00598390
|United States, Maryland|
|National Institutes of Health Clinical Center, 9000 Rockville Pike|
|Bethesda, Maryland, United States, 20892|
|Principal Investigator:||Robert B Innis, M.D.||National Institute of Mental Health (NIMH)|