View clinical trials related to Depressive Disorder, Major.
Filter by:There are 636,000 self-reported cases of sexual assault annually in Canada, and nine out of ten persons who have experienced sexual assault are women. Cognitive and behavioural therapies (CBT) are the treatment of choice for many psychological problems arising from sexual assault. However, accessing CBT is a significant challenge, especially for women who have experienced sexual assault who may be ashamed and not disclose the sexual assault. Online CBT is an effective option to circumvent these barriers. In addition to being accessible and less resource-intensive, studies report that patients are less inhibited and that the online environment provides greater emotional safety. There is also a growing body of evidence that online CBT programs requiring little or no contact with a mental health professional are effective, this having been demonstrated primarily with individuals with anxiety and mood disorders. But when it comes to treating the psychological symptoms of sexual assault in potentially vulnerable individuals, can we really suggest a self-care approach? There is no direct empirical evidence to support such a recommendation, and it is this important question that this project wishes to address. To compare the effectiveness, acceptability and user engagement in a self-managed treatment platform with or without the support of a therapist to reduce post-traumatic symptoms, depression and insomnia in people who have suffered one or more sexual assaults, 204 victims of sexual assault experiencing significant distress will be recruited and randomly assigned to either the self-managed or the therapist-assisted online treatment condition. Participants will complete measures assessing post-traumatic stress disorder, insomnia, depression, anxiety, and maladaptive beliefs before, during, after and 3 months after treatment. Secondary outcome will be and appreciation of the online treatment measures by a self-report questionnaire and a semi-structured interview. If effective in reducing symptoms, this treatment would offer the potential to support a self-care approach to treating a wide range of psychological symptoms resulting from sexual assault. The self-managed online platform would fill a service gap deplored by this population.
Clinical depression often includes a pessimistic view of things which have happened in the past and an impairment in the ability to experience pleasure or looking forward to things. A licensed drug called ketamine affects the levels of glutamate, a chemical messenger in the brain, and has been used as a treatment particularly for depression which hasn't got better with other types of medication. Glutamate plays a role in learning and memory so the investigators are interested in understanding how ketamine can affect how people with depression remember past negative and positive memories and how they experience reward. The investigators are conducting a study in depressed participants who did not improve with the standard antidepressant treatment to expand our understanding on how ketamine can influence memory, the way people understand emotions and learn from rewards and punishments. Study participants will undergo medical and psychiatric health screening, drug administration (ketamine or saline), questionnaires and computer tasks before and after the administration of the study drug, and an MRI scan after administration of the drug. MRI is a type of brain scan that allows us to see how the brain responds during for example memories of things which have happened in the past. This project will help us understand how NMDA antagonists may work in depression.
TRIAGE-Psych is a survey study designed to assess potential participants' eligibility to screen for industry-sponsored psychiatry clinical trials.
In patients suffering from anorexia nervosa associated with severe major depression, serotonin reuptake inhibitor drugs have shown little efficacy in significantly reducing depressive symptoms. A possible explanation for this poor efficacy could be that people with anorexia nervosa have a deficiency in amino acids such as tryptophan, which is necessary for the production of the neurotransmitter serotonin. Therefore, tryptophan supplementation has been suggested as a means of increasing the pharmacological response to serotonin reuptake inhibitor drugs in patients with anorexia nervosa. Furthermore, malnutrition present in patients suffering from anorexia nervosa is in some cases associated with problems of intestinal absorption of nutrients, with possible implications on the pharmacokinetics of the drugs administered, including selective serotonin reuptake inhibitors (SSRIs). The present observational study aims to evaluate the correlations between the clinical response to Citalopram therapy (in different o.s. and i.v. formulations) and some nutritional, neurotransmitter and inflammatory biomarkers, in order to identify potential predictive markers of response to therapy for severe major depression in patients with anorexia nervosa. The following parameters will be evaluated in patients enrolled in all 3 observation times described above: - Plasma concentration of Citalopram - Serum concentration of Serotonin - Plasma concentration of dopamine - Serum concentration of Tryptophan - Serum concentration of BDNF - Hamilton scale 17 items and other clinical scales (EDI-3, SCL-90, BUT).
Major depressive disorder (MDD) is a significant cause of disability that affects approximately 16% of the world's population and is associated with chronic inflammation. Although the mechanisms of MDD have not yet been clearly elucidated, NLRP3 inflammasomes have been implicated in the pathogenesis of depression.NLRP3 inflammasome is an intracellular multiprotein complex that consists of nod-like receptor protein 3, an adaptor protein, and a procaspase-1 precursor. It is well known that a variety of danger signals, such as pathogen-associated molecular patterns and danger-associated molecular patterns can activate NLRP3 inflammasome
The purpose of this study is to test the hypothesis that the anti-depressant and anti-suicidal effects of the N-methyl-D-aspartate receptor (NMDAR) antagonist Ketamine is critically dependent on stimulation of Alpha-Amino-3-Hydroxy-5-Methyl-4-Isoxazole Propionic Acid receptors (AMPAR).
The goal of this clinical study's to analyse the impact of TaKeTiNa music therapy in depressed patients. The main question[s] it aims to answer are: . Can TaKeTiNa result in a significant pre-to-post intervention decline of depression severity 2. Can TaKeTiNa result in a significantly lower post-intervention depression severity in the T1/T2 group than in the W1/W2 group. Participants will - be randomly assigned to the two groups, intervention vs. waitlist - receive either an eight week TaKeTiNa music therapy or waitlist - be analysed using questionaires, blood taking, cortisol saliva analysis, measured heart rate variability Researchers will compare a waitlist to see if TakeTiNa is superior to waitlist
Of the estimated 30 million Americans who suffer from Major Depressive Disorder, approximately 10% are considered treatment resistant. Deep brain stimulation (DBS) to a region of the brain called the subcallosal cingulate (SCC) is an emerging strategy for treatment resistant depression (TRD), which involves placement of electrodes in a specific region of the brain and stimulating that area with electricity. This is believed to reset the brain network responsible for symptoms and results in a significant antidepressant response. A series of open-label studies have demonstrated sustained, long-term antidepressant effects in 40-60% of patients who received this treatment. A challenge to the effective dissemination of this fledgling treatment is the absence of biomarkers (objective, measureable indications of the state of the body and brain) to guide device placement and select stimulation parameters during follow-up care. By using a DBS device called the Percept PC (Medtronic, Inc) which has the ability to both deliver stimulation to and record electrical signals directly from the brain, this study aims to identify changes in local field potentials (LFPs), specific electrical signals that are thought to represent how the brain communicates information from one region to another, to see how this relates to DBS parameter settings and patient depressive symptomatology. The goal of this study is to study LFPs before and during active DBS stimulation to identify changes that correlate with the antidepressant effects of SCC DBS. The study team will recruit 10 patients with TRD and implant them with the Percept PC system. Participants will be asked to complete short questionnaires and collect LFP data twice daily for the first year of the study, as well as have weekly in person research procedures and assessments with the study team for up to one year. These include meetings with the study psychiatrist, psychologist, symptom ratings, and movement, voice, and video recordings. A brief discontinuation experiment will be conducted after 6 months of stimulation, in which the stimulation will be turned off and patterns of LFP changes will be recorded. The entire study is expected to last about 5 years, parcellated into several study phases. All participants are required to live in the New York metropolitan area for the first several months of the study.
The purpose of this research study is to study closed-loop transcranial alternating current stimulation (tACS) to determine its effects on symptoms of depression in people with major depressive disorder.
This study aims to identify the influence of social determinants of health domains on vascular function in a low income, racial, and ethnic minority population at risk for disparities. We hypothesize that individuals of a lower social economic position and those struggling with depression are at greater risk of cardiovascular disease.