Active clinical trials for "Depressive Disorder, Treatment-Resistant"

The purpose of this study is to see if psilocybin, an investigational drug, is safe and well tolerated. Researchers also want to know if psilocybin can improve symptoms of depression. This study will see if psilocybin is safe and well tolerated by tracking changes in suicidal thoughts and behaviour, monitoring if any participants choose to stop participating in the study, and measuring any serious side effects, as well as how long they take to resolve. This study will also see if depression symptoms improve (or worsen) after psilocybin is administered. Additional information about participants' depressive symptoms and side effects will also be measured during the study.

This is a multi-site, double-blind, placebo-controlled study of the acute efficacy of brexpiprazole or placebo in combination with intranasal ketamine added to ongoing, stable, and adequate antidepressant therapy (ADT) in the treatment of adults with Major Depressive Disorder with Treatment Resistant Depression.

The purpose of this research study is to assess which antidepressants work the best in older adults who have treatment-resistant depression (TRD).

This study evaluated the efficacy and safety of the compound MIJ821 compared to placebo in patients aged from 18 to 65 years diagnosed with treatment-resistant depression. The study was conducted in the US and in Europe (Spain). The MIJ821 was administered via infusion on a weekly or bi-weekly basis. The efficacy was measured after 24 hours using a specific golden standard scale, the Montgomery-Asberg Depression Rating Scale. The study duration was 6 weeks of treatment plus 1 month of follow up period.

This study aims to assess the impact of a chronic dietary intervention (8 weeks) with probiotics, specifically Fermented Milk Product with Probiotic (FMPP), on the mood of individuals with Major Depressive Disorder (MDD) refractory to standard antidepressant therapy, and its association with changes in intestinal microbiota and markers of inflammation.

The primary objective is to determine if the opioid properties of ketamine are responsible for its antidepressant effects. Since naltrexone can block opiate actions, the investigators will determine if naltrexone can effectively block ketamine's effects.

The purpose of the present trial is to test the efficacy of Ayahuasca in treatment-resistant depression. Ayahuasca is a decoction of two plants, long used by Amazonian Amerindians. Traditionally, it is prepared by decoction of a bush (Psychotria viridis) with a liana (Banisteriopsis caapi). P. viridis is a rich source of N,N-dimethyltryptamine (DMT), a serotonergic agonist, and B. caapi contains potent monoamine oxidase-A inhibitors (MAOi-A), such as harmine, harmaline. The study is designed as a randomized placebo controlled trial with two parallel arms, and it will also evaluate changes of different biomarkers of depression including anatomical and functional Magnetic Resonance Imaging (MRI), serum levels of BDNF, TNF-a, cortisol, IL-6, and IL-10, polysomnography, neuropsychological, psychiatric scales and questionnaires.

SABR (from the Urdu word for patience) is a 5-year natural history, longitudinal, prospective study of a cohort of 6,000 participants that will help uncover the socio-demographic, lifestyle, clinical, psychological, and neurobiological factors that contribute to antidepressant treatment response (remission, recurrence, relapse and individual outcomes in depressive disorders) and resilience. As this is an exploratory study, we will assess a comprehensive panel of carefully selected participant specific parameters - socio-demographic (age, sex, gender, race, ethnicity, economic); life habits (physical activity, substance use); clinical (medical history, anxious depression, early life trauma), biological (biomarkers in blood, saliva, urine, stool), behavioral (cognitive, emotional), neurophysiological (EEG), and neuroimaging (magnetic resonance imaging; MRI) with the goal of developing the most robust predictive models of depression treatment response and of outcomes.

The objective of the current study is to investigate the safety and efficacy of a single dose of intranasal (IN) ketamine in treatment-resistant depression (TRD).

About one-third of depressed patients will not get better after multiple antidepressant treatments. This situation put a high burden on patients with depression due to worsening quality of life and increasing health care costs. Difficult-to-treat depression might be even worse among Veterans given that the frequency of depressive symptoms is 2 to 5 times higher than among the general US population. A breakthrough discovery happened in recent years when investigators found that one infusion from an old anesthetic named ketamine showed high efficacy and rapid antidepressant effect (sometimes within hours) but lasted only up to a week. The investigators propose to study if multiple infusions of ketamine can provide greater and longer antidepressant effects than one infusion. If that is the case, multiple infusions could be an alternative to relieve depressive symptoms that do not response to multiple antidepressant drugs.