Active clinical trials for "Obsessive-Compulsive Disorder"

Abnormalities in the re-uptake of dopamine and serotonin have been described in various neuropsychiatric disorders and substance abuse. [I-123] Beta-CIT is a recently developed radioligand for SPECT imaging of dopamine and serotonin transporters. [I-123]Beta-CIT SPECT has been used at the SPECT-lab of the Clinical Brain Disorders Branch in over fifty subjects without adverse events. Due to the trace concentrations used, a pharmacological effect of Beta-CIT is unlikely and has not been observed. The purpose of this study is to use Beta-CIT and SPECT to study the expression of dopamine and serotonin transporters in vivo in normal controls and various patient populations to address hypothesized abnormalities of the transporters in different disorders and to understand the effects of genetic variations in the genes of these transporters on their in vivo expression.

The purpose of this study is to identify genes that affect susceptibility to obsessive-compulsive disorder (OCD). By identifying genes that increase or decrease the risk of OCD, researchers can better understand how the condition develops and ultimately improve treatment for people with OCD. OCD is a severe, familial condition that affects approximately 2% of the population. The way OCD is inherited is not clearly understood, but researchers believe it is complex and involves multiple genes. This study will detect and localize genes that increase or decrease susceptibility to OCD. The data collected from this study will be combined with data from other research studies to determine gene linkage and association.

This study will identify variations in genes that may be involved in the development of suicidal events or certain behaviors in youth who are exposed to antidepressant medications.

This study will look at similarities and differences in family processes and child temperament among children with and without symptoms of anxiety disorders.

This study examines the use of Acamprosate (Campral(R)) in the treatment of Obsessive Compulsive Disorder (OCD). The treatment of this condition is difficulty and a large percentage of patients fail to respond to medications and have residual symptoms. Such patients are referred to as having treatment resistant OCD.

We examine the usage of Dopamine blockers in OCD patients. We want to examine their frequency of usage, compare the course of the disease between those who receive and those who do not receive Dopamine blockers, and efficacy of the treatment. The study will be done in two stages: 1. Collecting information the usage of Dopamine blockers from 150 OCD patients' files. 2. interviewing 60-70 patients to see the difference those who receive and those who do not receive Dopamine blockers in their current severity of disease.

Assessing OCD before and after group therapy

The purpose of this study is to examine the brain functioning of children and adolescent with OCD before and after treatment with Exposure and Response Prevention (EXRP) therapy.

To modeling the pharmacokinetic-pharmacodynamic(PK-PD) simulation with the plasma concentration and the transporter occupancy from OCD patients treated with escitalopram. To examine the effect of G2677T/A single nucleotide polymorphism(SNP) of ABCB1 gene to the PK-PD modeling in OCD patients treated with escitalopram.

Background: Humans live in symbiosis with microbes and their implication for health and disease is evident. The importance of microbiome-gut-brain axis in psychiatric disorders is an area of increasing research interest. OCD is a promising target for microbiome research as Pediatric Acute-onset Neuropsychiatric Syndrome (PANS)/ Pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections (PANDAS) are reactions to infectious agents precipitating acute onset of severe OCD symptoms. Furthermore, preliminary evidence has associated probiotic treatment with alleviation of OCD symptoms. We propose the first clinical study on the microbiome and its effects on OCD patients. Aim: To analyze the gut microbiota in patients with OCD compared with healthy matched controls and assess changes in microbial composition following treatment. Outcome measures: Differences in alpha diversity, beta diversity, and taxa abundance of bacterial groups (at the phylum, class, order, family, genus and species levels) and severity of OCD symptoms. Moreover, functional profiling will be conducted. Methods: Our aim is to enroll 32 OCD patients and 32 matched controls. Shotgun metagenomic sequencing will be used. Sequenced data will be processed followed by non-parametric statistical testing. Significance: gut microbiome in patients with OCD beofre and after ERP treatment has never been done before. The microbial composition may impact on OCD symptoms, severity, and chronicity and could inform future therapeutic possibilities.