View clinical trials related to Depressive Disorder, Major.
Filter by:The purpose of this pilot study is to investigate and compare the effect of a mild inflammatory stimulus (typhoid vaccine) on immune response, mood and cognition in healthy volunteers compared to patients with history Major Depressive Disorder (MDD) (not currently depressed and no symptoms of depression in the past 6 months).
The proposed study addresses a gap regarding the need for effective Major Depressive Disorder (MDD) treatments and the 40% of individuals treated with antidepressant medications that do not achieve full remission. This study tests a novel approach for treating MDD in a Randomized Control Trial (RTC) using yoga versus walking interventions to correct an imbalance in the Autonomic Nervous System; an over active Sympathetic Nervous System (fight or flight) an underactive Parasympathetic Nervous System (PNS) (rest, renewal and social engagement) and associated under activity in the neurotransmitter, gamma aminobutyric acid (GABA). This novel approach is complimentary to the use of antidepressant medications that primarily target the monoamine systems. Low activity in the PNS and GABA systems are also found in MDD, PTSD, and Alcohol Use Disorder, disorders representing a high healthcare burden in the Veteran population. This intervention has potential to provide relief for MDD and other disorders relevant the Veteran population
This study is a multicenter, randomized, double-blind, placebo-controlled trial designed to assess the efficacy and safety of brexpiprazole as adjunctive therapy in the treatment of Major Depressive Disorder. A total of approximately 1100 subjects will be enrolled into the single-blind treatment for 6 weeks, and 480 incomplete responders will be randomized to brexpiprazole (2~3 mg) or placebo in a 1:1 ratio (approximately 240 subjects in each group), for treatment of 6 weeks.
The study will evaluate the efficacy, safety, and tolerability of 450 milligrams (mg) of Rapastinel, compared to placebo in adult patients with major depressive disorder (MDD) who are at imminent risk of suicide.
The habenula(Hb) is an epithalamic structure located at the center of the dorsal diencephalic conduction system, a pathway involved in linking forebrain to midbrain regions. An increasing number of studies indicates that overactivity in the lateral habeluna(LHb) is present during depressed states, where it could drive the changes in midbrain activity linked to depression. Deep brain stimulation(DBS) of the major afferent bundle (i.e., stria medullaris thalami) of the LHb can treat treatment-resistant major depression(TRD). There is no clinical case of directly stimulating habeluna for treatment TRD. This research will investigate effectiveness and safety of bilateral DBS to habenula for patients with TRD. This study will also use structural and functional MRI to explore the underlying mechanism of Hb's effects on TRD.
Depression is a frequent disease and a serious public health problem, of which suicide is the most severe complication. Its treatment is based on the introduction of antidepressant which not only proposes a significant delay in the relief of symptoms but also by the phenomenon of lifting of inhibition can increase the suicidal risk during the initiation phase. Therefore there is a major interest in proposing a monitoring of these dark and suicidal ideas, immediately after the implementation of such treatment as well as other symptoms of depression. Thus, the aim of this study is to identify the mechanisms underlying this increase in dark and suicidal ideas in this context.
The primary purpose is to compare with resting fMRI the functional networks of rest (RTS) in unipolar depression and in bipolar depression. Hypothesis : the main objective of this work is to compare with the rest fMRI the Rest Functional Networks (RFN) in the unipolar depression and in the bipolar depression in order to identify specific biomarkers for each affection. The general hypothesis of this work is that intra- and inter RFN connectivity is different between bipolar patients and unipolar patients. Specifically the investigators assume that connectivity within the default mode network (including ventral mediofrontal cortex, subgenual cingulate cortex, inferior parietal cortex, posterior cingulate cortex) will be increased in unipolar patients compared to bipolar patients.
The prevalence of psychiatric disorders such as major depression disorder (MDD) is increasing rapidly. Despite advancements in the development of therapeutics, current treatment options have not reached optimal efficacy. Recent interest has been drawn towards the importance of the biochemical signalling between the gastrointestinal tract and the central nervous system also known as the "microbiome-gut-brain axis". The pathogenesis of gut microbiota in extra intestinal diseases was inspired by massive studies in germ free (GF) animals, which indicated that the gut microbiota plays a role in the normal regulation of behaviour that are relevant to mood, anxiety and stress. However, the exact mechanisms by which intestinal dysbiosis are involved in the development of psychiatric diseases are not completely clarified. A new method to alter the composition of the gastrointestinal microbiota involves fecal microbiota transplantation (FMT). The goal of FMT is to introduce or restore a stable microbial community in the gut by transplanting intestinal microbiota from a healthy donor to the patient. FMT, as a microbiota-target therapy, is arguably very effective for curing recurrent Clostridium difficile infection and has good outcomes in other intestinal diseases. At the same time, applications in previously unexpected areas, including metabolic diseases, neuropsychiatric disorders, autoimmune diseases, allergic disorders, and tumors have shown health enhancing results. FMT has initially been conducted using colonoscopy. However, recent evidence has shown that treatment with frozen FMT capsules (to be taken orally) is also safe and beneficial in restoring the gut microbiota in patients with various diseases As FMT capsules may be an effective, pragmatical adjuvant therapy (in addition to standard treatment) for depression, this project is aimed at (1) investigating for the first time if single administration of FMT capsules ameliorates depressive symptoms in patients with moderate to severe MDD 4 weeks after treatment and (2) establishing the safety profile of encapsulated FMT in MDD. Furthermore, we will also test if (3) FMT capsules modulates immune signalling and inflammatory processes, (4) Hypothalamic-pituitary-adrenal (HPA) axis responses, (5) neurogenesis, (6) energy balance hormones, (7) gut microbiota composition and (8) brain perfusion, structure and activation.
We hope to demonstrate that magnetic resonance spectroscopy can detect brain concentration levels of paroxetine (Paxil) or citalopram (Celexa) or escitalopram (Lexapro) in depressed patients.
The habenula(Hb) is an epithalamic structure located at the center of the dorsal diencephalic conduction system, a pathway involved in linking forebrain to midbrain regions. An increasing number of studies indicates that that overactivity in the lateral habeluna(LHb) is present during depressed states, where it could drive the changes in midbrain activity linked to depression. Deep brain stimulation(DBS) of the major afferent bundle (i.e., stria medullaris thalami) of the LHb can treat treatment-resistant major depression(TRD). There is no clinical case of directly stimulating habeluna for treatment TRD. This research will investigate effectiveness bilateral DBS to habenula for patients with TRD. Programming is a crucial aspect of DBS which directly influences its therapeutic efficacy. Researchers need to ascertain optimum stimulation parameters to help patients achieve optimal control of clinical symptoms. Remote programming of DBS can markedly improve patient convenience, minimize risk of infection and total treatment time and lead to an overall benefit for doctors and patients alike. This research will also investigate safety and benefit of remote programming of DBS.