Active clinical trials for "Depressive Disorder, Major"

This is an observational case-control add-on study to an investigator-initiated clinical trial (IICT) (ClinicalTrials.gov Identifier: NCT03167307): Omega-3 fatty acids as firstline treatment in pediatric depression. A 36-week multi-centre, double-blind, placebo-controlled randomized superiority study. This project will recruit a healthy control group matched for age and sex to a sub-group of patients with diagnosed pediatric major depressive disorder (pMDD) enrolled in the IICT. The aim is to investigate the relationship of n-3 FA intake and status with mental health in children and adolescents with and without diagnosed pMDD, and explore potential biochemical mechanisms underlying this relationship by measuring biomarkers related to n-3 FA metabolism, mental health and cognitive function.

Researchers are testing whether a computer program (called a clinical decision support tool) can help clinicians predict how a patient with depression will respond to antidepressant medication.

According to the World Health Organization, MDD is attributed as the leading cause of disability worldwide, leaving 300 million individuals affected. Despite the efficacy of pharmacotherapy, a subset of MDD patients, classified as TRD, exhibit suboptimal response and thus require alternative treatment options such as rTMS. Emotional-laden "hot"and Neutral "cold" cognitions are shown to be dysfunctional in depression. Potential pro-cognitive effects remain inconclusive. In this study the investigators seek to investigate whether visual scanning patterns of emotionally laden images may be a biological marker and predictor of rTMS antidepressant efficacy. If so, then changes in visual scanning patterns are expected to precede clinical symptom improvement. Furthermore, changes in visual scanning patterns (which characterizes the state of hot cognition) are compared simultaneously to changes in cold cognition in order to elucidate the neural mechanisms underlying rTMS-induced changes in cognition. It is hypothesized that participants who are responders to rTMS will exhibit a decrease in the amount of time spent looking at dysphoric images will precede clinically detectable changes in mood as measured by a reduction in the scores on the 17-item Hamilton Depression Rating Scale (HDRS-17). The hypothesis for this study corresponds to the alleviation of the dysfunction within the hot cognitive system as a result of rTMS and a potential compensatory effect of cold cognition as a natural reaction of resetting the allocation of cognitive resources.

The purpose of this study is two-fold: To identify the best smartphone data features (based on keyboard, sensor, voice/speech data) that correlate with mood, anxiety, and cognitive assessments in patients with Major Depressive Disorder (MDD) and Bipolar Depression (BD). To identify the best smartphone data features (based on keyboard, sensor, voice/speech at a) that predict relapse and remission in MDD or BD.

The project aims to investigate markers of neural activity and connectivity, neurochemistry, hypothalamic-pituitary-adrenal (HPA) axis activity, inflammation and neuronal plasticity underlying treatment response and remission after ECT. These measures will be assessed in depressive patients prior, during and after ECT and also after 6 months. Furthermore, we will investigate a control group of depressive patients treated with antidepressants.

Suicidal behavior (SB) is a major public health problem in France, with more than 10,000 suicides and 220,000 suicide attempts per year. According to the commonly accepted model for understanding suicidal behavior, individuals who carry a suicidal act when subjected to stress factors (environmental stress, depression, substance ...) are those which have a specific vulnerability. These vulnerabilities can be considered as clinical parameters (propensity to despair, aggressive and/or impulsive traits), neurobiological parameters (dysfunction of the serotonergic system, ...) and cognitive parameters (taking disadvantageous decision ...). Suicidal vulnerability is partly underpinned by genetic factors. The interest of current researches is to identify biomarkers that will improve the opportunities for early identification of subject with a risk for SB. Numerous scientific studies, including post-mortem studies of the brains of suicide completers, have established a link between dysregulation of the ribonucleic acids editing (RNA) of certain genes, the enzymatic activity of Adenosine deaminases acting on RNA (ADARS) responsible for this edition and suicidal behavior. A prospective study is needed to quantify and qualify in the blood of depressed patients (with or without a history of suicide) and healthy controls, the editing changes and the expression and alteration of the activity of ADARS.

This study evaluates the association between early trauma, depression and metabolic symptoms.

A study to evaluate the effectiveness of an update of educational materials with respect to evaluation of monitoring of metabolic parameters

One of the main points in the biological trends is, the circadian rhythm and disturbance in this cycle, which cause mood disorders and irregularity in this bio clock, to get depression. The pineal gland with the precise regulation of circadian rhythm of melatonin regulates the brain haemostasis. The abnormal function of this gland gives rise to psychiatric disorders. In the period of youth and early of middle-age cause biochemical changes and disturbance in biorhythm including melatonin secretion. This process can change the peak of melatonin phase. In addition, a decrease in the level of serum melatonin, can change the function of immune system of depressed patients. This function facilitates the process of cancerous cell formation and tumor growth. With respect to the conflicting results and that the positive and negative roles of melatonin in the creation of depression is unknown, the aim of this study was to compare the morning and nocturnal serum melatonin rhythm levels in the patients with Major Depressive Disorder. The second purpose was to measure the morning and nocturnal serum melatonin levels in the depressed and healthy men and women.

The purpose of this study is to evaluate the feasibility of developing a microbiome probe of depression and to evaluate the microbiome change in a preliminary analysis of treatment response (n=20) vs. non response (n=20) to the antidepressant citalopram. This study is a 12 week open trial that will enroll approximately 80 participants (anticipated 40 study completers with paired biomarker data) with an episode of major depression, Bipolar I or Bipolar II and 40 age- and sex-matched healthy controls.