Active clinical trials for "Depressive Disorder, Major"

Repetitive transcranial magnetic stimulation (rTMS) with theta bursts (i.e. TBS) of the dorsolateral prefrontal cortex (DLPFC) is an innovative treatment for major depressive disorder (MDD). Indeed, the U. S. Food and Drug Administration (FDA) has only recently approved TBS (in August 2018). However, fewer than 50% of patients show sufficient response to this treatment; markers for response prediction are urgently needed. Moreover, there is a lack of knowledge of the mechanism of action of TBS of the DLPFC. This is due to difficulties of directly measuring prefrontal stimulation effects, as compared to the stimulation of motor cortex and utilizing motor evoked potentials as direct readout. However, knowledge of immediate DLPFC modulation by TBS is necessary to extrapolate downstream effects on the neural and symptoms level. Thus, there is a need for research that aims to quantify the direct and immediate after-effects of TBS on DLPFC function. Most importantly, with regard to precision medicine, there is a need for research that explores the utility of immediate DLPFC reactivity to TBS for the prediction of antidepressant treatment response. There is common agreement that certain forms of rTMS inhibit or excite brain activity, respectively. However, evidence indicates that there is considerable individual variability in the brain responses to rTMS. Whether differences in individual DLPFC modulation by rTMS can be utilized as a predictive marker for treatment response remains to be investigated. This research program will exploit the combination of functional near-infrared spectroscopy (fNIRS) with brain stimulation. Concurrent TBS/fNIRS measurements will allow us to systematically investigate TBS-induced modulation of blood oxygenation as a proxy for induced brain activity changes. The findings from this study will (1) elucidate the immediate effects of excitatory and inhibitory TBS on prefrontal activity in TBS treatment-naïve patients with MDD and (2) validate the potential utility of TBS-induced brain modulation at baseline for the prediction of antidepressant response to four weeks of daily TBS treatment. Major depression is a severe mental disorder and is associated with considerable economic costs but adequate treatments are poorly explored. This research program will pave the way towards an affordable and easy-to-implement method for response prediction before treatment commencement. Thus, our research proposal has high potential to inform tailored treatment strategies, as envisaged in precision medicine.

Background: In 2012, over 3.2 million Canadians over 15 (11.3%) years reported symptoms of major depressive disorder (MDD), and barriers such as lack of readily available care system, stigma and affordability of health care services were reported by millions of Canadians who expressed they had unmet or partially met mental health care needs. There is the need to develop innovative psychological interventions which are not human resource intensive, are easily accessible, cost-effective, are geographic location independent, scalable, and can be offered to thousands of people simultaneously. Supportive text messaging has been proven in clinical trials to be effective in alleviating depression symptoms but are limited in their ability support those without active cell phones. Objective: The objective of this study is to evaluate the feasibility, comparative effectiveness and user satisfaction with daily supportive e-mail messaging as an intervention to treat patients with MDD when compared to daily supportive text messaging. Method: In this innovative two-arm randomized non-inferiority pilot trial, patients with MDD receiving usual care would be randomized to receive either daily supportive email messaging or daily supportive text messaging of the same content for six months. The Patient Health Questionnaire (PHQ)-9 scale will be utilized to record depression symptom scores, the Generalized Anxiety Disorder (GAD)-7 scale would be used to record the anxiety symptoms and quality of life will be measured using the WHO (Five) Well-Being Index (WHO-5) at baseline, 6, 12 and 24 weeks. Primary outcomes would be the mean difference in change scores on the PHQ-9 and WHO-5 scales from baseline to 6, 12 and 24 weeks for the two study arms. Secondary outcomes include changed scores on the GAD7 scale from baseline to 6, 12 and 24 weeks for the two study arms, the dropout rates and the satisfaction rates at 12 and 24 weeks for participants in the two treatment arms. All outcome measures would be analyzed using descriptive and inferential statistics. Qualitative data will be analyzed using thematic analysis aided by NVIVO software. Results: We expect the study results to be available within 18 months of study commencement. Conclusion: The results of this study will shed light on the feasibility, acceptability and effectiveness of using automated email supportive message interventions in the management of patients with MDD.

Despite large-scale, nationwide efforts to better address suicidal behavior in Veterans at high risk, the development of interventions that target some of the key risk factors associated with suicide remains limited. This study aims to collect pilot data to test feasibility/acceptability of a novel adjunctive evidence-based cognitive remediation (CR) therapy with manualized "Bridging" sessions for transfer and practice of problem-solving strategies for real-world stressors, including those that trigger suicidal thoughts. This 10-week (20 session) Neuropsychological Educational Approach to Cognitive Remediation CR+Bridging telehealth intervention will be administered virtually via HIPPA-compliant services to 36 Veterans with major depressive disorder and a history of suicide attempt(s). Pre-, post-treatment, and follow-up assessments of neurocognitive, clinical, social, and real-world functioning also will be conducted. This study has potential for high public health impact and promise to help improve quality of life for Veterans at high risk for suicide.

Placebo groups in clinical trials on depression show impressive improvements. Yet, there is little research on the mechanism underlying this effect. The aim of this study is to assess how patients' treatment expectations modulate the placebo treatment effects. We expect that patients' treatment expectation determines placebo responses and treatment outcomes, and that this expectation is influenced by the disorder explanations (information about the illness models) typically provided during the initial medical encounters that precede treatment. In the study we aim to manipulate depressed patients' expectations by providing two different clinician-delivered illness and treatment rationales (biological/ psychological). Patients will then receive placebo treatment (pharmacological/ psychological), that is either congruent or incongruent with the previously communicated treatment rationale. Hypotheses: Providing a treatment-congruent treatment rationale leads to a better outcome than providing treatment-incongruent rationales. Treatment-congruent explanations reduce the risk of side effect development, in particular in the medication arm. Inter-individual differences in the effect of provided treatment rationale are associated with pre-treatment experiences and expectations, depression severity and comorbid anxiety.

Targeted and individualized treatments for mental health disorders are critically needed. Repetitive transcranial magnetic stimulation (rTMS) represents the front-line of new and innovative approaches to normalizing dysfunctional brain networks in those with mental illness. rTMS is FDA-approved for depression and obsessive-compulsive disorder with clinical trials underway for PTSD and addiction, among others. However, remission rates are suboptimal and ideal stimulation parameters are unknown. We recently completed a randomized, double blind clinical trial and a depression severity biomarker that predicts clinical outcome. The overarching goal of this study is to develop the first broadly generalizable platform for real-time biomarker monitoring and personalized rTMS treatment. We plan to recruit patients with medication-resistant depression and in perform a four-phase, cross-over, double-blind, placebo-controlled trial to 1) identify how standard and optimized rTMS patterns engage the depression severity biomarker, and 2) determine the dose-response of these rTMS patterns. Findings from this study will provide the basis for a double-blind, randomized clinical trial comparing rTMS optimized to the individual against standard rTMS.

This study will examine if brain insulin resistance is a feature of depression in humans using magnetic resonance imaging (MRI) measures sensitive to brain insulin action. This study will examine adolescents, as depression onset commonly occurs during this age, and the impacts of cumulative medication exposure and other lifestyle-related confounds are also lower in this age group, improving our ability to understand the underlying biology.

Transcranial pulse stimulation (TPS) is a newly developed brain stimulation therapy from Austria & Germany with highly promising applicability in neuropsychiatric disorders. Major depressive disorder (MDD) is the world's leading cause of disability. Novel treatment approaches are urgently needed given that a significant fraction of patients does not sufficiently respond to standard antidepressant treatments. Our open-label pilot study using TPS in MDD indicates preliminary efficacy. However, experimental control is necessary to infer reliable scientific evidence for the efficacy of TPS. Here, we propose a randomized, double-blind, sham-controlled clinical trial to probe the utility of TPS as a modern antidepressant treatment.

Large register based work has shown that starting on oral contraceptives (OCs) is associated with an increased risk of developing depressive episodes. It is not known why this is, but changes in the serotonergic brain system might play a role. Intriguingly, in cross-sectional work, the investigators have demonstrated a lower level of the serotonin 4 receptor globally in the brain of healthy women using oral contraceptives compared to non-users. The order of magnitude of this difference is comparable to what has been observed in depressed individuals relative to healthy controls. In this study, the investigators will apply a longitudinal design to determine if starting on oral contraceptives induces a reduction in the serotonin 4 receptor in healthy women and whether such changes are related to potential changes in measures of cognition as well as mood/affect and sexual desire. The study is a single-blind randomized placebo-controlled trial with a 3-month intervention paradigm of either Femicept (2nd generation combined oral contraceptive) or placebo. The investigators will include participants until 20 women have completed the study in each arm. Participants will go through an investigational program, including PET and MR brain scans and neuropsychological testing, before starting on the treatment and again during the third pill cycle. To capture changes in mood/ and sexual desire, the participants will complete daily questionnaires during the baseline menstrual cycle and during third pill cycle. A linear latent variable model will be used to evaluate if OC use induces changes in the serotonin 4 receptor level and such changes will be correlated to changes in secondary outcomes (i.e., cognitive and psychometric measures).

Depression is a highly prevalent condition characterized by persistent low mood, energy, and activity that can affect one's thoughts, mood, behavior, and sense of well-being. Repetitive transcranial magnetic stimulation (rTMS), a non-invasive neuromodulatory technique, is an effective treatment for depression when targeting the dorsolateral prefrontal cortex (dlPFC) of the central executive network (CEN). However, remission rates are suboptimal and individual methods to target the dlPFC are lacking. In this study, we will enroll 50 patients with major depression and in a single rTMS 'dose,' prospective, randomized, double-blind, cross-over design will assess whether rTMS targeted to an individual's central executive network (CEN) assessed by single pulse TMS can enhance network modulation. If successful, this work will lead to a clinical rTMS trial comparing this personalized targeting approach against standard rTMS.

The goal of this proposal is to examine the influence of feedback timing on learning and brain function in individuals with moderate-to-severe traumatic brain injury (TBI), with and without depression.