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24 active trials for Major Depression

Mechanism of Action Underlying Ketamine's Antidepressant Effects: The AMPA Throughput Theory in Patients With Treatment-Resistant Major Depression

Background: Most drugs that treat mood disorders take a long time to work. Ketamine works within hours. A dose can last for a week or more. Certain receptors in the brain might help ketamine work. A drug that blocks these receptors might affect how it works. Objective: To see if the antidepressant response of ketamine is linked to AMPA receptors. Eligibility: Adults ages 18-70 with major depression disorder without psychotic features Design: Participants will be screened under protocol 01-M-0254. They will have blood tests and a physical exam. Participants will stay at the NIH Clinical Center for 5 weeks. Phase 1 lasts 4 weeks. For 2 weeks, participants will taper off their psychiatric medicine. Then they will have the following tests: Blood draws Psychological tests MRI: Participants will lie in a machine that takes pictures of their brain. MEG: Participants will lie down and do tasks. A cone lowered on their head will record brain activity. Optional sleep tests: Electrodes on the scalp and body and belts around the body will monitor participants while they sleep. Optional TMS: Participants will do tasks while a wire coil is held on their scalp. An electrical current will pass through the coil that affects brain activity. For phase 2, on day 0 participants will take the study drug or a placebo orally. While having a MEG, they will get ketamine infused into a vein in one arm while blood is drawn from a vein in the other arm. On day 1, participants will again take the study drug or a placebo orally. On days 3-7, they will repeat many of the phase 1 tests. Days 8 and 9 are optional and include an open label ketamine treatment and many of the phase 1 tests.

Start: January 2020
Walking for Health: an Intervention to Increase Physical Activity and Reduce Sedentary Behaviour in People With SMI

People who have a severe mental illness can have poorer physical health and higher mortality rates than the general population. Their medications combined with low levels of physical activity and increased sedentary behaviour can general population and may help people with severe mental illness to be more active. A previous feasibility study has been conducted in the UK in a large city with positive findings. The current study will be conducted in rural settings in Northern Ireland and Republic of Ireland. The intervention will last 13 weeks. People with Severe Mental Illness will be randomly assigned into one of two groups. Both groups will get information on the benefits of physical activity. In addition, one group will be shown how to use a step counter to measure their steps, be invited to a weekly group walk, and meet their coach every 2 weeks contribute to this. Walking is a good way to increase physical activity in the to see how they are getting on and to support them. The research team are interested in finding out how willing clinicians are to recruit people into the study, how willing people are to take part, do people then stick with the programme, and if not the reasons for people dropping out. Qualitative findings will explore whether participants feel they benefited from and enjoyed the programme. Findings will be used to investigate the feasibility to conduct a larger trial like this in the future.

Start: August 2019
New Clinical Applications for Internet-based Cognitive Behavior Therapy for Insomnia and Depression

This study includes two sub-trials. Both are included in this singe registration since they have parallel inclusion of participants and have been approved by the Swedish ethics board together in one application. Trial 1 includes patients with both insomnia and major or minor depression. Participants are randomized to either a combined therapist guided Internet-CBT for insomnia and depression, or to Internet-CBT for depression with an addition of a placebo intervention for insomnia. The primary purpose is to evaluate changes in insomnia and depression severity for the combination treatment compared to the depression treatment, after treatment and at 6 and 36 months follow up. A secondary purpose is to evaluate cognitive functioning before and after treatment, as well as cost effectiveness. Recruitment is done in the Stockholm County through mass media and the Internet psychiatry clinic's regular patient recruitment. Trial 2 includes patients with insomnia who do not meet criteria for major or minor depression. All participants start therapist guided Internet-CBT for insomnia. After 4 weeks patients that are judged to be at risk of treatment failure are randomized to either continued treatment or treatment with added support intended to enhance outcome. The primary purpose is to evaluate change in insomnia severity for participants who get added support, compared to continued treatment with regular support level. A secondary purpose is to evaluate cognitive functioning before and after treatment, as well as cost effectiveness. Recruitment is done in the Stockholm County through mass media and the Internet psychiatry clinic's regular patient recruitment. NOTE: The first participants in trial 1 will be regarded as pilots, due to problems with the experimental treatment: technical issues as well as problems with the design of treatment modules. These problems were corrected when discovered. 12 participants in the experimental arm were affected by these errors. The pilot participants will not be included in the main analyses of data. This was decided upon on 31st of October 2014.

Start: January 2013
Ketamine Alcohol (in Treatment-Resistant Depression)

A single subanesthetic dose infusion of the N-methyl-D-aspartate (NMDA) receptor antagonist ketamine has rapid and robust antidepressant effects in patients with treatment-refractory major depressive disorder (TRD). A family history of an alcohol use disorder (Family History Positive, FHP) is one of the strongest identified predictors of an improved antidepressant response to ketamine. Like ketamine, alcohol is a functional NMDA receptor antagonist. FHP is associated with differential response to both alcohol, e.g. decreased body sway and plasma cortisol, and ketamine, e.g. blunted psychotomimetic side effects. One of the primary mechanistic hypotheses for ketamine's antidepressant action is the acute intrasynaptic release of glutamate from major output neurons, e.g. cortical pyramidal cells. Preliminary clinical studies have demonstrated this acute glutamate "surge" in response to subanesthetic dose ketamine. Based on these findings, the investigators hypothesize that ketamine's enhanced antidepressant efficacy in FHP TRD subjects is, at least in part, attributable to increased glutamate release relative to TRD subjects without a family history of alcohol use disorder (Family History Negative, FHN). The investigators also hypothesize that alcohol similarly augments glutamate release in this bio- logically-enriched subgroup, which may be a more objective biomarker than family history status. To test these hypotheses, the investigators have designed a now two-site, open-label study of 21-65 year old medically and neurologically healthy, currently moderately-to-severely depressed TRD patients. In total, the investigators plan to recruit 25 FHP and 25 FHN TRD subjects. All subjects must not have a lifetime substance use disorder (except nicotine or caffeine), no lifetime history of an alcohol use disorder and socially drink. The experimental portion consists of two phases. The preliminary first phase is a medication taper (if needed) and psychotropic medication-free period. The experimental second phase comprises two pharmacokinetically-defined basal-bolus alcohol and one subanesthetic dose (0.5mg/kg x 40 minute) ketamine infusions. The first alcohol infusion will establish the pharmacokinetic profile for a subsequent alcohol infusion occurring during 7T-magnetic resonance imaging (MRI), both resting-state functional MRI (rs-fMRI) and magnetic resonance spectroscopy (MRS) to detect glutamate in the ventromedial prefrontal cortex/ventral anterior cingulate cortex (vmPFC/vACC). The ketamine infusion will also occur during 7T-MRI. The primary outcome measure is group mean change in Montgomery-Åsberg Depression Rating Scale (MADRS) score from pre-ketamine infusion (baseline) to one week post-infusion, where the investigators observed ketamine's greatest antidepressant effect in FHP TRD. Additional outcome measures are vmPFC/vACC glutamate change in response to ketamine and alcohol challenge based on family history status. In summary, this study will provide key mechanistic information on ketamine's improved antidepressant efficacy in a biologically-enriched subgroup. This will contribute to the systematic development of more efficacious, personalized treatments for major depression in an effort to reduce its enormous public health burden.

Start: April 2014