View clinical trials related to Depressive Disorder, Major.
Filter by:Major depression (MD) is common during adolescence and associated with significant morbidity and mortality. One important factor for the development and maintenance of adolescent MD are disturbances in emotion regulation, including deficits in cognitive reappraisal (CR). CR is a particularly effective emotion regulation strategy that aims at reinterpreting emotional events to modify affective responses. Adolescents with MD apply this strategy less often than their healthy peers and show disturbances in brain activation patterns underlying CR. In this study, MD adolescents will be randomly assigned to a group that receives a task-based training in CR or to a control training group. It will be examined whether the task-based CR training is superior to the control training with regard to improvements in negative affect, perceived stress in daily life and depressive symptoms. Moreover, during the four training sessions, the event-related potential "Late Positive Potential" (LPP) will be recorded to assess neurophysiological indices of CR processes and gaze fixations on emotional areas within negative pictures and affective responses to pictures will be collected to identify mechanisms underlying training effects.This study will provide first evidence for the efficacy of a short-time training that has previously shown to be effective in healthy individuals. Moreover, the study will identify neurobiological mechanisms that predict training effects. The results of this investigation will lay the ground for a clinical trial to investigate whether a CR training added to an established intervention improves treatment effects for adolescent MD.
The purpose of this study is to identify pharmacogenetic profiles associated with selective serotonin reuptake inhibitors (SSRI)-induced behavioral disinhibition in children with Major depressive disorder (MDD), anxiety disorders and/or obsessive-compulsive disorder (OCD) that could be used clinically to reduce the incidence of this adverse event and improve health outcomes.
This study aims to investigate changes in functional connectivity over a four week treatment course with intermittent theta burst stimulation (iTBS) in patients with major depressive disorder (MDD). To this end, seven weekly resting-state fMRI (rs-fMRI) scans at 7 tesla (7T) will precede, accompany and follow the iTBS treatment course. By obtaining several samples of the modulatory effects of iTBS on functional connectivity networks and simultaneous measurements of the depressive symptoms it will be possible to assess the time course of changes in connectivity across different networks, and to assess the overall relationship between the network modulation and the antidepressant effects of the treatment over time.
Transcranial magnetic stimulation (rTMS) is an approved treatment for depression. The purpose of this study is to test an adjunctive medication, D-cycloserine, in rTMS for depression using a placebo-controlled design. D-Cycloserine is a partial N-Methyl-D-Aspartate receptor (NMDAr) agonist, and therefore may enhance the effects of rTMS, however there is data to support and refute this hypothesis. Using a double-blind design, the investigators will randomize patients with Major Depressive Disorder to receive either daily low dose D-cycloserine or placebo in conjunction with rTMS to the left dorsolateral prefrontal cortex. After 10 treatments (2 weeks), this double-blind period will conclude and all participants will receive an additional 10 treatments (2 weeks) of rTMS without any adjuncts. The primary outcome will be improvement in clinician rated depressive symptoms at the conclusion of the study.
This study aims at investigating the persistence of antidepressant effect of Nitrous Oxide (N2O) for Treatment-Resistant Depression(TRD). The investigators also aim to assess the effect of N2O on the electroencephalograph, multimodal magnetic resonance imaging(MRI), blood cytokines, feces bacteria flora and neuropsychological performance in patients with TRD. The investigators further aim to identify the predictors of N2O's antidepressant effeect using the above techniques.
The antidepressant medications are among the most commonly prescribed pharmacological agents in patients with mood and anxiety disorder. Despite recent advances in antidepressant pharmacotherapy, there is a pressing need for substantial optimization and improvment of outcome of pharmacotherapy of psychiatric disorders by providing individualized and science-based treatment guidelines. Besides it is rather difficult in clinical practice to predict, which patient will response to a certain pharmacological treatment well and which one less so. Putative predictors of response to antidepressant include demographic and clinical characteristics, personality traits, biological markers and psychophysiological features. Recently the research studies shown that divergences in antidepressant efficacy may be related to genetic variations of patients. The pharmacogenetic studies have multiplied in recent decade due to the impact that such studies may have in everyday clinical practice once reliable predictors could be identified. The pharmacogenetic research using new DNA microarray-based technology can reasonably be expected to contribute to the prediction of likelihood of treatment response and risk of development of adverse side effects in individual patients in case of antidepressant treatment. By reducing costly treatment failures and the likelihood of serious adverse events, pharmacogenetic testing may help to improve the treatment possibilities for chronic diseases, reduce the burden prescription drug costs, and lower the costs of drug development. The further detailed investigation of peripheral gene expression profiles may help to identify responsible genes that underlie the process of development of affective disorders and open novel horizons for understanding molecular mechanisms of psychopharmacological treatment.
The objective of this study is to determine the effect of music therapy during dialysis on: depression, anxiety, quality of life, blood pressure, heart rate, medication compliance, compliance with dialysis treatment, number of hospitalizations, pain level, and energy level.
The purpose of this study is to pilot a primary-care based mindfulness intervention for chronically traumatized African Americans screening positive for posttraumatic stress disorder (PTSD) and major depressive disorder (MDD) in primary care clinics within an urban public hospital. The study will utilize a randomized controlled trial (RCT) design along with a multi-method psychological and physiological assessment approach to establish the feasibility and acceptability of a mindfulness-based cognitive therapy (MBCT) intervention for primary care versus wait-list control in African Americans with chronic trauma exposure and comorbid PTSD and MDD. Preliminary mechanisms of action associated with MBCT including emotion dysregulation and autonomic function will be evaluated. The data collection and 8-session group intervention will take place in primary care clinics within an urban public hospital serving primarily low-income, minority individuals (>80% African American).
The overarching aim of the study is to determine the role of insulin signaling on the neurobiological substrates subserving anhedonia within individuals with mood disorders (i.e., Bipolar Disorder (BD) and Major Depressive Disorder (MDD)). Specific aims include: 1. Molecular: Assessment of components of the insulin cascade, as well as of anhedonia and reward-related processes, using a proteomics and gene expression approach; 2. Physiology: Measurement of peripheral sensitivity to insulin and metabolic correlates, including body mass index and dyslipidemia; 3. Neural Circuits: Evaluation of the insulin sensitivity of prefrontal (e.g. prefrontal cortex) and striatal (e.g. nucleus accumbens, ventral tegmental area) networks in the resting-state and during an effort-based decision making test, using acutely administered intranasal insulin and functional magnetic resonance imaging (fMRI); 4. Behavioral: Measurement of willingness to make effort for rewards, as well as of other components of reward response and anhedonia, using validated behavioral tasks and clinical scales (e.g. Snaith-Hamilton Pleasure Scale - SHPS). This initiative represents a proof-of-concept study that insulin is important to anhedonia, neurocognitive functioning, and behavioural deficits in MDD, representing a novel and safe therapeutic avenue.
Major depressive disorder is a common mental disorder and the leading cause of disability worldwide. According to the Canadian Network for Mood and Anxiety Treatment, early improvement following an antidepressant treatment is correlated with response and remission. Escalation of an antidepressant dose after 2 weeks, as opposed to 4 to 8 weeks, is proposed to favor early improvement. However, this has never been tested systematically in a controlled study involving major depressive disorder patients that are non-responders to their antidepressant treatment.