View clinical trials related to Depressive Disorder.
Filter by:Over 50% of patients with major depressive disorder (MDD) do not respond to initial treatment and relapse is common. In particular, comorbid depression and anxiety disorders are associated with more treatment resistance. Thus, there is a great need for novel, more targeted treatments. Transcranial direct current stimulation (tDCS) is a novel intervention that can be used to causally target neural excitability and plasticity in brain regions/circuits implicated in regulating mood and anxiety and emerging evidence suggests that it reduces threat sensitivity. Here the investigators propose to use tDCS to target threat sensitivity as a core symptom of anxious depression to determine if the investigators can engage the neural circuits that are treatment targets. Following the administration of a single dose of anxiolytic or antidepressant treatment, early changes in emotional processing have been observed in healthy people and clinical groups. Among patients, acute cognitive effects - such as a reduction in threat sensitivity - have been shown to predict response to drug and behavioral treatments. Functional magnetic resonance imaging (fMRI) studies have confirmed hyperactive amygdala and/or hypoactive prefrontal activity in patients, indicating an imbalance of activity within this cortico-limbic circuit that sub-serves threat identification (amygdala) and top-down control (prefrontal). Specifically, treatments aiming to remediate prefrontal/ amygdala dysfunction could be a critical target in patients exhibiting these deficits. Several clinical trials have shown that administration of frontal cortex tDCS is a potentially effective treatment for MDD. However, underlying mechanisms of action are unclear. To meet this gap, the investigators propose an experimental medicine study (target identification and initial target engagement paths) where 141 volunteers with anxious MDD will be randomized to receive a single session of active or sham tDCS in a parallel design. Threat sensitivity will be measured using task and resting state fMRI and potentiated startle electrophysiology. Preliminary data suggest reductions in behavioral threat sensitivity from a single session of frontal tDCS. This was followed up with an fMRI study which found that a single session of active vs sham frontal tDCS reduced amygdala response to fearful faces whilst simultaneously increasing frontal attentional control signals. This provides evidence that modulating activity in the frontal cortex inhibits amygdala response to threat, highlighting a potential neural mechanism for the behavioral reduction in threat sensitivity. In addition, this offers initial mechanistic insights into the efficacy of tDCS in clinical trials for the treatment of MDD and anxiety disorders, suggesting that threat sensitivity may be a suitable cognitive target. The current proposal builds on this to establish acute effects of frontal tDCS on amygdala response to threat (primary aim), frontoparietal response to threat (secondary aim), startle response under threat (secondary aim) and approach-avoidance-conflict (exploratory aim). The ultimate aim is to apply these multi-level acute findings to mechanistic clinical trials of tDCS, to test their prediction of treatment response (full model path) and improve patient outcomes.
The overall goal of this project is to develop a novel transdiagnostic behavioral treatment -- Amplification of Positivity (AMP) -- intended to enhance positive social connections in individuals with elevated anxiety and/or depression. Social relationship impairments are common and debilitating consequences of anxiety and depression. Existing treatments have some beneficial impact on social functioning; however, many people continue to have few and/or poor quality relationships following treatment, even after experiencing symptom relief. This study will evaluate the effects of AMP on the brain systems that have been shown to be important for establishing positive connections with others. Approximately 100 individuals (ages 18-55) seeking treatment for anxiety or depression will participate in this study. Participants will be randomly assigned with equal probability to either AMP or stress management training (SMT) (6 sessions each). Participants will be assessed at baseline and post-treatment and compared on measures assessing brain responses to social reward (primary outcome), as well as physiological, behavioral, and emotional responses to social reward (secondary outcomes). It is hypothesized that the AMP group will experience greater increases from pre- to post-treatment in activity in brain systems that regulate the processing of social reward cues (e.g., striatum) relative to participants in the SMT group. It is also hypothesized that changes in brain activation to social reward from pre- to post-treatment will be correlated with the degree of improvement in social connectedness.
The main purpose of this study is to examine the efficacy and safety of a repeated dosing ketamine infusion paradigm compared to placebo in individuals with PD. A subset of participants in each arm will undergo baseline and post-treatment PET and fMRI scans, to examine whether changes in synaptic density and reorganization of functional networks underlie ketamine's putative antidepressant effects in PD.
The primary objective of the study is to evaluate the feasibility of eliciting continuous narrative speech in different neurodegenerative and psychiatric indications, using remote, self-administered speech tasks, as measured by the average length of speech elicitation for each speech task during the first week of self-assessment. Secondary objectives include (1) evaluating the reliability of speech tasks in the remote self-administered setting, as measured by the intra- and inter-subject variance; (2) accessing the adherence of speech tasks in this setting, as measured by the subject average fraction of days during the first week, where at least one task response is submitted; (3) evaluating the feasibility of using speech tasks in the setting of a telemedicine videoconference, as measured by the average length of speech elicited in each group; (4) evaluate whether a set of acoustic and linguistic patterns can detect each indication, compare to either a control group or all other indications, as measured by the area under the receiver operating characteristic curve (AUC), sensitivity, specificity and Cohen's kappa of the relevant binary classifier; (5) evaluating how the performance of such algorithms can be impacted by speaker and environment covariates, as measured by the Kendall rank correlation coefficient of the AUC of each classifier and each of age group, gender and speech-to-reverberation modulation energy ratio.
Pragmatic, randomised, controlled, parallel-group, superiority trial of ketamine vs. midazolam as an adjunctive therapy for depression. The main purpose of the trial is to assess the mood-rating score difference between ketamine and midazolam from before the first infusion to 24 hours after the final infusion, supplemented by a 95% confidence interval. There will also be a 24-week follow-up after the final infusion session.
This study is open to adults between 18 and 65 years of age who have depression (major depressive disorder). People with a current depressive episode lasting between 2 months and one and a half years can join the study. This study is for people for whom existing treatments for depression do not work sufficiently. The purpose of this study is to test how well a medicine called BI 1569912 is tolerated and whether it may help people with depression. It is planned to test 4 different dosages of BI 1569912 in this study. Each participant gets either one BI 1569912 dosage or placebo. It is decided randomly, which means by chance, who gets which treatment. Participants take BI 1569912 or placebo as tablets once during the study. Placebo tablets look like BI 1569912 tablets but do not contain any medicine. Participants also continue taking their usual medicine for depression throughout the study. Participants are in the study for about 5 weeks. During this time, they visit the study site 4 times, with a stay at the study site for 9 days. The doctors check the health of the participants and note any health problems that could have been caused by BI 1569912. The participants fill in questionnaires about their depression symptoms.
The present study has been designed to compare the efficacy and safety of augmentation of SSRIs with Amantadine vs Pramipexole vs the recommended Quetiapine augmentation in Treatment-Resistant Depression (TRD) and correlate the changes in depression scores with changes in the serum levels of Brain-derived neurotrophic factor (BDNF) and Nerve growth factor (NGF). The proposed study will be a prospective, randomized, single-blind, controlled clinical trial in patients with TRD and will be conducted over a period of 2 years. The study cohort will comprise 150 patients with unipolar depression clinically diagnosed as TRD, who are currently on Sertraline treatment (dose range = 100-200 mg/day). At baseline, Hamilton Depression Scale (HAM-D 21 item) will be administered to determine the severity of depressive symptoms, Clinical Global Inventory (CGI) will be administered to determine the baseline severity of the illness. Serum BDNF, and NGF will be estimated by ELISA using commercially available Human ELISA kit. The sample will be divided into 3 equal treatment groups by block randomization technique, each group comprising of 50 patients. Group 1 will receive Amantadine 200 mg/day (in two divided doses) augmentation to the ongoing Sertraline treatment. Group 2 will receive Pramipexole 0.375 mg/day (in three divided doses) augmentation to the ongoing Sertraline treatment. Group 3 will serve as the control arm and receive the recommended Quetiapine XR 100 mg/day augmentation to the ongoing Sertraline treatment. The study cohort will be reassessed for the changes in HAM-D scores, CGI severity scores, Improvement score and Efficacy index, at 4 and 8 weeks follow up. The changes in Serum BDNF, and NGF will be estimated at the end of 8 weeks, to correlate with the change in severity of depressive symptoms. All the participants will be evaluated for any untoward side effects in a prescribed format for the Pharmacovigilance program of India (PVPI). The patient in either of the treatment arms, who are not responding to treatment or relapsing with aggravation of depressive symptoms will be switched on to Venlafaxine treatment or Electro-convulsive therapy (ECT) as decided by the treating team.
Diabetes characterized by decreased production, or resistance to the action of insulin or both. The reduced production or action alters many important body functions namely glucose absorption and utilization in the body. The disturbed glucose metabolism profoundly effects transportation of large neutral amino acids especially tryptophan in brain leading decreased synthesis of serotonin and hence ensuing depression, memory loss and various other psycho-neurological problems. Different antipsychotic treatments like serotonin reuptake inhibitors, monoamine inhibitors and tricyclic antidepressants are available in the market to treat depression but are not devoid of adverse effects. Therefore, there is a tendency in underdeveloped countries to use alternative remedies to combat the psycho-neurological issues. Nature has bestowed the bounty of indigenous herbs like Saffron (Crocus sativusL) and chamomile (Matricaria chamomileL), that possess neuro-protective effects and are regularly consumed in day to day delicacies with no documented adverse-effects nor adverse events Though these herbs have been studied widely for their multiple therapeutic benefits, however, till date both of these herbs in combination have not been studied as an adjuvant therapy for mild to moderate depression. Therefore the present study is designed to determine the combined beneficial effects of these herbs as an adjuvant therapy for treatment of depression.
The prevalence of major depressive disorder (MDD) is ~5.0%, and rates of co-occurring SUDs in these patients approach 40-50%. Specifically, rates of co-morbid cannabis use disorder (CUD) in patients with MDD are elevated 2-3 fold compared to 2.9% in the general population, and is associated with poorer treatment outcomes and impaired cognitive and psychosocial functioning in comparison to MDD patients without CUD. Most studies of cannabis use in MDD are cross-sectional in design, and therefore causal relationships are unclear. This study investigates the effects of cannabis abstinence over a 28-day period in patients with MDD with co-occurring CUD using a randomized controlled design, namely contingent reinforcement.
The purpose of this study is to examine the feasibility of a protocol in which individuals with comorbid depression or anxiety disorders and alcohol use disorder will be randomized to complete Amplification of Positivity for Alcohol Use Disorder (AMP-A)- a psychological treatment focused on increasing positive thoughts, emotions, and behaviors- or a traditional cognitive-behavioral therapy (CBT) intervention. Assessed outcomes will include participant acceptability and completion rates, participant compliance with the intervention, positive and negative affect, substance use- and depression and anxiety-related symptom severity, and functional disability.