Active clinical trials for "Obsessive-Compulsive Disorder"

Obsessive Compulsive Disorder is a highly debilitating condition with a lifetime prevalence of 2%-3%, and a notable percentage of patients (40-60%) have a partial or no response to medications. The present gold standard for the treatment of OCD is medications (Selective serotonin reuptake inhibitors (SSRIs) / Clomipramine) + Exposure and Response Prevention (ERP). There is a significant need for alternative novel methods of treatment. One of the novel methods of treating OCD is using magnetic stimulation which has already been successfully used in the treatment of depression. Treating OCD is difficult with regular superficial repetitive Transcranial Magnetic Stimulation (rTMS) hence the need for coils that targets deeper structures. Thus, we are comparing the efficacy of the two different coils from two different manufacturers plus using ERP in combination with the different coils. Deep Transcranial Magnetic Stimulation (DTMS) using BrainsWay H7 coil targets deeper structures such as medial prefrontal cortex. The H7 coil has already shown clear evidence in treating patients with OCD and has been approved by the FDA for clinical use. Repetitive Transcranial Magnetic Stimulation (rTMS) using MagVenture Cool D-B coil could also target the medial prefrontal cortex. Hence it might also be equally effective as the BrainsWay H7 coil in treating patients with OCD.

The primary purpose of this study is to investigate whether administration of xenon reduces symptoms of Obsessive-Compulsive Disorder (OCD). Xenon is a naturally occurring gas that has been used in clinical settings both as a general anesthetic agent and as a contrast agent for computed tomography (CT) scans. Investigators believe that xenon may be effective in reducing symptoms of OCD due to its ability to reduce the activity of a specific brain chemical called glutamate, which has been shown to be abnormal in the brains of people with OCD. It is important to understand that this study uses a placebo, or inactive, treatment. In this study, the placebo treatment is inhalation of room air (instead of xenon). All participants will receive both xenon and placebo treatments at some point over the course of the study. However, neither the participants nor the study investigators will know which treatment you are receiving.

The investigators are testing the efficacy of Smartphone-delivered cognitive behavioral therapy (CBT) treatment for obsessive compulsive disorder (OCD). The investigators hypothesize that participants receiving app-CBT will have greater improvement in Y-BOCS scores than those in the waitlist condition at treatment endpoint (week 12).

Refractory obsessive-compulsive disorder (OCD) is a disabling condition. Deep brain stimulation (DBS) of the nucleus accumbens is the most tested therapeutic avenue for refractory OCD. However, large scale randomized controlled trials to evaluate the effectiveness of this approach are rare.

Hypothesis of this study is that mindfulness meditation would decrease the severity of obsessive-compulsive symptoms.

This study will examine the gut microbiota and serum inflammatory markers in patients with Obsessive-Compulsive Disorder vs. healthy controls. Phase II of the study will examine the gut microbiota and cytokine levels following 12-weeks of treatment with Selective Serotonin Reuptake Inhibitors (SSRIs).

This study will focus on the use of repetitive Transcranial Magnetic Stimulation (rTMS) as a treatment of Obsessive Compulsive Disorder (OCD), which is a common illness that impairs quality of life and that can be hard to treat. To precisely analyze the effects of rTMS on OCD, the investigators are going to plan a study comparing cerebral blood flow before and after rTMS treatment. The measuring will occur on the Orbito Frontal Cortex (OFC), whose role in OCD has already been shown by our team (Nauczyciel et al, 2014 in Translational Psychiatry), using Magnetic Resonance Imaging in Arterial Spin Labeling, an MRI method allowing to measure arteriola blood flow. Our primary outcome is to show a significate difference between cerebral blood flow in OCD between one group of participants treated by rTMS and another one treated by placebo. The study will be double blinded with a placebo rTMS machine, monocentric and prospective, with participants suffering from OCD randomized between two groups.

Assessing the efficacy of Naltrexone as augmentation to SSRI in patients with OCD

Objective: Although atypical antipsychotic drugs (AAPDs) have been found effective in the augmentation of serotonin reuptake inhibitors (SRIs) for treatment-resistant obsessive-compulsive disorder (OCD) in short terms trials, there are few data on the effectiveness and safety of these agents in clinical settings over the long term. Method: Subjects (n=46) who responded to selective SRIs (SSRIs) in an initial 12-week trial were continued on SRI-monotherapy plus cognitive-behavioral therapy (CBT) for one year. Subjects (n=44) who failed to respond to SSRIs were randomly assigned to one of 3 AAPDs such as risperidone and were consecutively treated using SSRI+AAPD combined with CBT for a year.

Cognitive Behavioral Therapy with fear provoking exposures is the most effective therapy for anxiety disorders. The investigators aim to enhance this therapy with the use of virtual reality exposures. The human subjects study will test the effects of using VR for exposures compared to traditional imaginal exposures on anxiety symptom improvement, functioning, child engagement in an response to exposures, completion of exposure homework between treatment sessions, and length of treatment in weeks and length of treatment among children with anxiety disorders and/or obsessive compulsive disorder. The funding award supports the development of the technology and the human subjects study. The subcontract to Mayo supports expert input to identify clinically relevant content for therapeutic videos on the VR system and the human subjects study to test the VR system.