View clinical trials related to Depression.
Filter by:The purpose of this study is to investigate whether rosuvastatin decreases measures of inflammation in depressive patients.
The goal of the project is to develop and test an internet/intranet-based Screening, Brief Intervention, and Referral to Treatment (iSBIRT) system for adolescents that targets a broad range of serious health-risks and problem behaviors.
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.
RATIONALE: Gathering information over time about patients' sense of being a burden on their caregiver, and caregivers' sense of burden on themselves, may help doctors learn more about the desire to die in patients with late-stage cancer. PURPOSE: This clinical trial is studying perceptions of burden in patients with late-stage cancer and their caregivers.
The study aims to investigate whether the administration of the stimulant modafinil during a 40 hour sleep deprivation period in depressed patients can intensify the antidepressant effect of the sleep deprivation as assessed by a reduction in the Hamilton Depression score (HAMD, 6-item version). We postulate that this also correlates with a reduction of the polysomnographically assessed overall amount of sleep during this period.
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.
The purpose of this study is to test whether once-weekly prozac therapy leads to reduction in depression in patients requiring kidney dialysis.
Evaluation of olanzapine versus placebo in the continuation therapy of subjects with major depression who had a response with additional olanzapine to an antidepressant.