Clinical trials: Dopamine
Cocaine Dependence
Understanding Dopamine Mechanisms in Cocaine Addiction Using AMPT and Methylphenidate With [11C]RAC/[11C]PHNO PET
Studies using positron emission tomography (PET) have been used with great success in demonstrating specific abnormalities in several facets of dopaminergic system function in human populations (Narendran and Martinez 2009).
- Trial name
- NCT02152670
- Testing
- Methylphenidate, Alpha Methyl Para Tyrosine (AMPT), [11C]PHNO
- Where
- United States
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- Yale University
Schizophrenia
A Pharmacokinetic Study of MP-214 in Patients With Schizophrenia
The objective of this study is to evaluate the pharmacokinetics, safety and efficacy of MP-214 in patients with schizophrenia.
- Trial name
- NCT01626859
- Testing
- MP-214 3mg, MP-214 6mg, MP-214 9mg
- Where
- Japan
- Volunteers
- 38 people
- Sponsor
- Tanabe Pharma Corporation
Schizophrenia
Safety and Efficacy of MP-214 in Patients With Schizophrenia
The objective of this study is to evaluate the efficacy, safety, and tolerability of MP-214 relative to placebo in patients with acute exacerbation of schizophrenia.
- Trial name
- NCT01625000
- Testing
- MP-214 3mg, MP-214 6mg, MP-214 9mg
- Where
- 3 sites in Japan, South Korea and 1 more
- Volunteers
- 512 people
- Sponsor
- Tanabe Pharma Corporation
Anorexia Nervosa
PET Imaging Study of Recovered Anorexics
Several studies in the past suggest that individuals who have or had anorexia nervosa may have alterations in brain serotonin. Serotonin seems to play an important role in regulating anxiety, mood, and other symptoms found in…
- Trial name
- NCT00603018
- Testing
- Fluoxetine
- Where
- United States
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- University of Pittsburgh
Schizophrenia
Long-term Study of Cariprazine in Patients With Schizophrenia
The objective of this study is to evaluate the long-term safety, tolerability, and pharmacokinetics of cariprazine in patients with schizophrenia.
- Trial name
- NCT01104792
- Testing
- Cariprazine
- Where
- 86 sites in United States, Colombia and 4 more
- Volunteers
- 752 people
- Sponsor
- Forest Laboratories
Schizophrenia
A Positron-Emission-Tomography (PET) Study to Measure the Blockade of Dopamine Receptors (D2) in Specific Areas of the Brain in Relation to the Plasma Concentrations of Paliperidone Extended Release (ER) and Oral Risperidone in Schizophrenia Patients and Healthy Controls
The primary objective of this study is to compare the effect of two different antipsychotic compounds which are used in the treatment of schizophrenia (paliperidone ER and risperidone) at their target sites in two specific areas…
- Trial name
- NCT00934635
- Testing
- Paliperidone ER, Oral risperidone, PET Scan
- Where
- Germany
- Volunteers
- 2 people, healthy volunteers welcome
- Sponsor
- Janssen-Cilag G.m.b.H
Stimulant Use Disorder, Substance-related Disorders
Treating Stimulant Addiction With Repetitive Transcranial Magnetic Stimulation
The purpose of this study is to establish a new treatment (repetitive transcranial stimulation (rTMS)) for Veterans with stimulant use disorder (SUD).
- Trial name
- VA-StARTS (NCT04228276)
- Testing
- Repetitive transcranial magnetic stimulation (rTMS)
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- VA Office of Research and Development
Pathological Gambling
Dopamine Responsivity in Gamblers
This study deals with how people decide between rewards of different value. The investigators want to understand how the brain's dopamine system impacts this kind of decision making.
- Trial name
- NCT02772978
- Testing
- Tolcapone
- Volunteers
- 19 people
- Sponsor
- University of California, San Francisco
Narcolepsy With Cataplexy, Healthy Controls
Xyrem and Brain Dopamine in Narcolepsy
The overall aim of this investigation is to establish whether an action of Xyrem® on the brain dopamine system in patients with narcolepsy, and in a comparison control group, might explain part of the anti-narcoleptic effect of…
- Trial name
- NCT02637076
- Testing
- Xyrem
- Where
- Canada
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- Centre for Addiction and Mental Health
Alcohol Dependence
Citalopram Effects on Craving and Dopamine Receptor Availability in Alcoholics
Alcohol use disorders (AUDs) are highly prevalent among U.S. civilians, and even more prevalent in the U.S. Veteran population. AUDs are frequently co-morbid with depressive symptoms in psychiatric clinical populations, resulting…
- Trial name
- CECDRAAD (NCT01657760)
- Testing
- citalopram
- Where
- United States
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Restless Legs Syndrome
The Effect of Horizant (Gabapentin Enacarbil) on Augmentation
Restless Legs Syndrome (RLS) is a common neurological disorder. Augmentation is the main complication during long-term DA treatment of RLS.
- Trial name
- XP-IIT-0034 (NCT02642315)
- Testing
- Horizant
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- University of Missouri-Columbia
Endometriosis
Dopamine Receptor Agonist Therapy for Pain Relief in Women Suffering From Endometriosis: A Pilot Study
The proposed pilot study will estimate the efficacy and safety of a novel therapeutic agent, cabergoline, with a clinical standard therapy, norethindrone acetate, for the treatment of endometriosis-associated pain in young women…
- Trial name
- NCT02542410
- Testing
- Cabergoline, Norethindrone acetate
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- Boston Children's Hospital
Parkinson Disease, Movement Disorders
Altropane Dose for Imaging Patients With Suspected Parkinson's Disease
Previous studies showed that a dose of 8 millicuries of Altropane was appropriate for imaging patients with suspected Parkinson's disease. This study determined if a lower dose (5 millicuries) would suffice.
- Trial name
- NCT05636852
- Testing
- Altropane (123I) Injection
- Where
- 4 sites in United States
- Volunteers
- 15 people
- Sponsor
- GE Healthcare
Nicotine Dependence
Imaging Extrastriatal Dopamine Release in Tobacco Smokers and Nonsmokers
The goal is to examine sex differences in amphetamine-induced dopamine release in tobacco smokers and nonsmokers.
- Trial name
- NCT02348385
- Testing
- Amphetamine
- Where
- United States
- Volunteers
- 49 people, healthy volunteers welcome
- Sponsor
- Yale University
Tourette's Syndrome
Ecopipam Treatment of Tourette Syndrome
Tourette's Syndrome is a neurological disease characterized by verbal and motor tics. The currently available drug treatments are considered to be inadequate.
- Trial name
- NCT01244633
- Testing
- Ecopipam
- Where
- 4 sites in United States
- Volunteers
- 18 people
- Sponsor
- Psyadon Pharma
Major Depressive Disorder (MDD), History of Childhood Sexual Abuse (CSA)
An Investigation of Early Life Stress and Depression
The purpose of this study is to investigate brain pathways within adult females (with a history of CSA that occurred between the ages of 5-14) with and without a current diagnosis of major depressive disorder (MDD).
- Trial name
- NCT01701258
- Testing
- Amisulpride
- Where
- 2 sites in United States
- Volunteers
- 153 people, healthy volunteers welcome
- Sponsor
- Mclean Hospital
Obesity
Dopamine and Insulin Resistance
Obese individuals have fewer striatal dopamine type 2 receptors (DRD2) than normal weight individuals. Lower DRD2 levels are associated with addiction and a decreased sense of pleasure.Obesity is also associated with insulin…
- Trial name
- NCT00802204
- Testing
- PET scan, Oral glucose tolerance test, MRI
- Where
- United States
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University
Perinatal Hypoxia, Dopamine
Measuring Brain Activity of School Age Children
This observational study will investigate whether differences in birth events and oxygen levels during the newborn period affects the brain activity of children during the middle childhood years.
- Conditions
- Perinatal Hypoxia, Dopamine, Neurobehavioral Manifestations
- Trial name
- NCT03407729
- Testing
- Magnetic Resonance Imaging, Cognitive Performance Testing
- Where
- United States
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- Case Western Reserve University
Parkinson's Disease
Assessment of Perampanel (E2007) on Synaptic Dopamine in Mild-moderate PD Patients: A Pilot Study With [^123I]-IBZM SPECT
This is a two-arm, double-blind, placebo-controlled study.
- Trial name
- NCT00566462
- Testing
- perampanel
- Where
- 3 sites in United States
- Volunteers
- 1 people
- Sponsor
- Eisai Inc.
Addiction Nicotine
Self-activation in Individuals With and Without Nicotine Dependence
The purpose of this study is to see if a non-medication intervention can increase motivation and reward processing to non-drug reward cues (for example, a picture of one's favorite food) in individuals with and without nicotine…
- Trial name
- NCT03170258
- Testing
- Neurofeedback (from fMRI and/or EEG)
- Where
- United States
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- Duke University