View clinical trials related to Major Depressive Disorder.
Filter by:To assess the effectiveness of a 12-week multidomain intervention with contingency management for reducing depressive symptoms in older adults with major depressive disorder.
The purpose of this study is to evaluate the safety, tolerability, and efficacy of TS-121 as an adjunctive treatment for patients with major depressive disorder with an inadequate response to current antidepressant Treatment (SSRI, SNRI or bupropion).
The Mood Disorder Cohort Research Consortium (MDCRC) study is designed as a naturalistic observational prospective cohort study for early-onset mood disorders (major depressive disorders, bipolar disorders type 1 and 2) in South Korea.
This study aims to 1) examine common and specific emotional and cognitive dysfunctions between Major Depression and generalized anxiety disorder; 2) Examine emotional and cognitive dysfunctions between the two disorders and healthy controls; 3) Examine the biomarkers predicting successful therapy or not.
This randomized double-blind placebo-controlled crossover study seeks to evaluate the antidepressant effect of L-leucine, an essential amino acid, in patients with Major Depressive Disorder (MDD).
The study will evaluate the safety and efficacy of AV-101.
N-3 polyunsaturated fatty acids(N-3 PUFAs) is important in balancing the immune function and physical health by reducing membrane arachidonic acid (AA) and prostaglandin E2 (PGE2) synthesis, which might be linked to the somatic manifestations physical morbidity, such as Cardiovascular disease in depression. n-3 polyunsaturated fatty acids appears to be a promising treatment that is safe, beneficial to patients with Cardiovascular disease and depression. In this proposal, investigators aim the test the hypothesis that n-3 polyunsaturated fatty acids will be more effective than placebo in treating Cardiovascular disease patients with major depression after 12 weeks of intervention.
The primary study intent is to examine biological mechanisms associated with acute and chronic treatment responses in major depressive disorder (MDD). It is hypothesized that treatment responsiveness, representing endogenous opioid system function, will be associated with acute improvements in mood state over a 10-week treatment trial in MDD. Potential (bio) markers of treatment effects will be tested against psychophysical responses to placebo and active treatments.
The purpose of this study was to evaluate the feasibility and compliance with a novel method for assessing mood and cognition in participants with major depressive disorder (MDD).
Background: Most medications that treat depression take weeks or months to work. Researchers want to develop fast-acting treatments. One dose of ketamine has a rapid antidepressant effect. For most people, this lasts a week or less. Repeated doses of ketamine may help maintain this effect. Objective: Main Study: To study the effects of ketamine in treating depression. Ketamine Metabolites Substudy: To study how ketamine effects brain chemistry. To study how ketamine effects the brain. This is done by looking at metabolites, which are created when a drug is broken down. Eligibility: Main Study: People ages 18-65 with major depressive disorder and healthy volunteers Ketamine Metabolites Substudy: Healthy volunteers ages 18-65 Design: Main Study: Participants will be screened in another study, with: - Medical and psychiatric history - Psychiatric and physical exam - Blood, urine, and heart tests Participants will be inpatients at NIH for 4 phases totaling 14-20 weeks. Phase I (2-7 weeks): - Gradually stop current medications - MRI: Participants lie and perform tasks in a machine that takes pictures of the body. - Mood and thinking tests - Blood and urine tests - Sleep test: Monitors on the skin record brain waves, breathing, heart rate, and movement during sleep. - Transcranial magnetic stimulation: A coil on the scalp gives an electrical current that affects brain activity. - Stress tests: Electrodes on the skin measure reactions to loud noises or electric shocks. Phase I tests are repeated in Phases II and III and in the final visit. Phase II (4-5 weeks): - 4 weekly IV infusions of ketamine or a placebo during an MRI or MEG. For the MEG, a cone over the head records brain activity. Phase III (optional): - 8 infusions of ketamine over 4 weeks Phase IV (optional): - Symptoms monitoring for 4 weeks - Participants will have a final visit. They will be offered standard treatment at NIH for up to 2 months. Ketamine Metabolites Substudy: Participants will be screened in another study, with: - Medical and psychiatric history - Psychiatric and physical exam - Blood, urine, and heart tests Participants will be inpatients at NIH for 4 days. Study Procedures: Mood and thinking tests Blood and urine tests 1 infusion of ketamine Spinal tap and spinal catheter: Used to get samples of cerebrospinal fluid (CSF). This is a fluid that moves around and within the brain and spinal cord. Studying CSF will help us learn how ketamine effects brain chemistry