View clinical trials related to Depressive Disorder.
Filter by:This study will develop and evaluate the effectiveness of a technology-assisted behavioral intervention, consisting of Internet-based cognitive behavioral therapy combined with telephone and email support, in preventing depressive symptoms and improving treatment adherence in individuals at risk of major depressive disorder.
This study will be an 8-week randomized, placebo-controlled clinical trial of pregnenolone administered adjunctively to treatment as usual in PTSD and depression in OEF/OIF Veterans.
The purpose of this study is to determine whether memantine will enhance the therapeutic of effect on depression and prevent memory and other cognitive problems caused by ECT.
rTMS is a promising, though largely untested, option for treating adolescent and young adult depression. This study hypothesizes that rTMS will safely and significantly alleviate depression and decrease suicidal ideation in adolescents and young adults based on previous studies.
This study will be a randomized controlled trial set in an outpatient clinic, involving patients with major depressive disorder, who will be treated with antidepressant therapy, which will be individually agreed upon by the subject and his or her physician. Patients will be randomized to receive either placebo or fish oil capsules containing eicosapentaenoic acid (EHA) and docosahexaenoic acid (DHA) in addition to their antidepressant medication. Subjects will complete a brief dietary and exercise habits survey at the beginning of the trial to take into account lifestyle factors that may be significant in symptom resolution. Their progress will be monitored over a period of twelve weeks, with standardized rating scales completed by subjects and treating physicians. At the end of the study, scores will be compared between groups to look for differences in timing and degree of symptom improvement to analyze whether improvement occurred faster in the group receiving essential fatty acids (EFAs) than in the one receiving placebo. The primary hypothesis is that supplementation of antidepressant therapy with omega-3 fatty acids will decrease the lag period between the start of therapy and the time of clinically significant symptom improvement. A secondary hypothesis is that the results of this study will be consistent with numerous previous studies showing improvement in symptom control in major depressive disorder when antidepressants are supplemented with omega-3 fatty acids.
The purpose of this study is to investigate whether rosuvastatin decreases measures of inflammation in depressive patients.
This primary purpose of this study is to assess the efficacy and safety of Effexor XR in preventing recurrence in Chinese patients with recurrent major depressive disorder (MDD) following a 1-year maintenance treatment after an 8-week acute treatment and a 6-month continuation treatment phases. The study will also collect data on the prevalence and pattern of co-morbid anxiety and somatic symptoms and their impact on the recurrence of depression.
PURPOSE The purpose of this study is to elucidate whether quetiapine fumurate (Seroquel) exerts its antidepressant activity in bipolar disorder through altering either serotonergic or catecholinergic activity. HYPOTHESIS By depleting either serotonin or catecholamines in successfully treated bipolar patients, relapse will be induced and reveal which neurotransmitters are effected when receiving normal treatment JUSTIFICATION While the exact mechanism of action of the classical antidepressants is not fully understood, strong evidence implicating serotonin and noradrenalin to be necessary (albeit insufficient) for the resolution of depression comes from neurotransmitter depletion studies. This biological evidence for each of these two neurotransmitters come from study paradigms in which the neurotransmitter (or its precursor) are selectively and effectively depleted from patients who have responded to antidepressants which either work through enhancing serotonin (for example, SRI antidepressants) or catecholamines (such as secondary amine tricyclics, Reboxetine, etc.). It has been shown, and replicated, that patients that respond to serotonin enhancing drugs precipitously and dramatically relapse when given a diet (often in the form of a milkshake) which is void of tryptophan, the precursor of serotonin. This diet often contains other long-chain amino acids to prevent any residual tryptophan in the system from entering the CNS. These patients who have then relapsed on the tryptophan-free diet have their tryptophan repleted and their mood improves often over a very short time frame (for example, five hours). When this technique is performed on patients responding to catecholamine-enhancing drugs there is no significant clinical effect. A similar approach can be taken with patients who respond to noradrelanine-enhancing drugs. Specifically, their catecholamine stores can be depleted by using dietary tyrosine. This reduces the synthesis of catecholamines and dopamine thus depleting pre-synaptic noradrenaline. For patients who responded to noradrenaline-enhancing drugs, this results in a relapse in terms of depressive symptomatology. When this dietary tyrosine strategy is applied to serotonin responders, there is no significant clinical effect.
Depression is a wide spread illness. Depression contributes most significantly to national health care costs. While the number and types of treatments used for depression have expanded over the years, even with an increased range of options, the response rate, defined as the number of subjects who have a 50% reduction in depressive symptoms, is estimated to be around 65%. This randomized clinical trial will examine the frequency of treatment with ketamine in patients with treatment-resistant depression TRD without psychosis. It will compare two modes of the ketamine treatment; every other day ketamine, versus two active and four placebo treatments over the period of 12 days.
The purpose of this study is to assess whether the antidepressant, duloxetine, is equally effective as a treatment for subjects who have a Postpartum Onset Depression compared to subjects who have an onset of Major Depressive Disorder prior to delivery. The hypothesis is that duloxetine will be as effective in subjects with Postpartum Major Depressive Disorder as in subjects with a Major Depressive Disorder.