Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
The purpose of this project is to examine the effects of mu-opiate antagonism on the rewarding and reinforcing effects of delta-9-tetrahydrocannabinol (THC), the main psychoactive ingredient of cannabis.
Not provided
Not provided
Not provided
Not provided
Not provided
| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Placebo and Placebo | Placebo Comparator |
| |
| Active Naloxone and Placebo | Experimental |
| |
| Placebo and Active Delta-9-THC | Placebo Comparator |
| |
| Active Naloxone and Active Delta-9-THC | Experimental |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Naloxone | Drug | Active Naloxone 18 mcg/kg intravenously over 60 minutes, 2mg IV push, 1mg IV push |
|
| Measure | Description | Time Frame |
|---|---|---|
| Behavioral Measures | Subjective effects and perceptual alterations will be assessed using the Positive and Negative Symptom Subscale (PANNS). | 4 test days |
| Measure | Description | Time Frame |
|---|---|---|
| Visual analog scales | Will assess subjective effects, perceptual alterations, and cognitive effects. | 4 test days |
| Clinician Administered Dissociative States Scales (CADSS) | Will measure subjective effects, perceptual alterations, and cognitive effects. |
Not provided
Inclusion Criteria:
Exclusion Criteria:
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| VA Connecticut Healthcare System | West Haven | Connecticut | 06516 | United States |
Not provided
| ID | Term |
|---|---|
| D002189 | Marijuana Abuse |
| D011618 | Psychotic Disorders |
| ID | Term |
|---|---|
| D019966 | Substance-Related Disorders |
| D064419 | Chemically-Induced Disorders |
| D001523 | Mental Disorders |
| D019967 | Schizophrenia Spectrum and Other Psychotic Disorders |
Not provided
Not provided
| ID | Term |
|---|---|
| D009270 | Naloxone |
| D013759 | Dronabinol |
| ID | Term |
|---|---|
| D009019 | Morphinans |
| D053610 | Opiate Alkaloids |
| D000470 | Alkaloids |
| D006571 | Heterocyclic Compounds |
Not provided
Not provided
Not provided
Not provided
Not provided
Not provided
| Delta-9-THC | Drug | Active Delta-9-THC (0.025mg/Kg) given intravenously over 20 minutes. |
|
| Placebo | Drug | Placebo |
|
| 4 test days |
| Psychotomimetic States Inventory (PSI) | Will assess subjective effects, perceptual alterations, and cognitive effects. | 4 test days |
| Marijuana Withdrawal Scale | Will assess subjective effects, perceptual alterations, and cognitive effects. | 4 test days |
| Clinical Opiate Withdrawal Scale | Will assess subjective effects, perceptual alterations, and cognitive effects. | 4 test days |
| Marijuana Craving Scale | Will assess subjective effects, perceptual alterations, and cognitive effects. | 4 test days |
| Neuro cognitive battery | Will assess cognitive effects. | 4 test days |
| D006572 |
| Heterocyclic Compounds, Bridged-Ring |
| D006576 | Heterocyclic Compounds, 4 or More Rings |
| D000072471 | Heterocyclic Compounds, Fused-Ring |
| D010616 | Phenanthrenes |
| D011084 | Polycyclic Aromatic Hydrocarbons |
| D011083 | Polycyclic Compounds |
| D002186 | Cannabinoids |
| D013729 | Terpenes |
| D006838 | Hydrocarbons |
| D009930 | Organic Chemicals |