Active clinical trials for "Depressive Disorder, Major"

The primary study aims are to determine the clinical, behavioural and social predictors of SMI development in youth, and to investigate whether neuroimaging can distinguish youth who will develop SMI from those who will not. The study's secondary aims are to examine the proportions of the cohort that make transitions between the different clinical stages of risk, and to determine the proportions that have poor outcomes, defined as ongoing or increased symptoms, secondary substance misuse, poor social or role functioning, i.e., non-participation in education, or employment, and new self-harm. Investigators will study a cohort of 240 youth (aged 14-25, male and female) that includes youth with early mood symptoms or sub-threshold psychotic symptoms (symptomatic group; n=160), youth at risk due to a family history of a SMI (family high risk (FHR); n=40), and healthy controls (HC; n=40). From this cohort, clinical, social and cognitive data, as well as imaging data will be gathered to create a multi-layered "snapshot" of these individuals and provide full-level characterization. Investigators will use the full range of clinical and imaging data generated from this cohort to develop novel prediction algorithms incorporating key variables that predict the development of SMI.

Depression is one of the most common symptoms of multiple sclerosis (MS) with a life-time prevalence of major depressive disorder (MDD) of up to 50%. Depression occurs more frequently in MS than in other chronic diseases including other neurological and inflammatory disorders and may contribute to lower quality of life, cognitive problems, difficulties at work, and poorer long term health outcomes. Despite its clinical relevance, the biological mechanisms which may be responsible for the high risk for MS patients to develop depression are unknown. In this observational study, investigators explore the molecular mechanisms responsible for the impaired regulation of immune cells in relapsing-remitting (RR) MS patients with depression. Investigators will compare the molecular and phenotypical profile of immune cells obtained from RRMS patients with clinical depression (n=50), matched MS patients who do not suffer from depression (n=50) as well as matched healthy controls (n=50) and matched patients with depression but without a comorbid neurological disorder (n=50).

In the presence of attention deficit hyperactivity disorder (ADHD) together with additional psychiatric diseases, the treatment process and prognosis of both ADHD and psychiatric comorbidity are adversely affected. The aim of this study is to compare the characteristics concerning the suicidal behavior of the patients with major depressive disorder (MDD) who have (ADHD+) or do not have (ADHD-) adult ADHD comorbidity and their responses to depression treatment. 96 inpatients were included in the study. Socio-demographic data form, Hamilton Depression Scale (HDRS), Wender Utah Rating Scale (WURS), Adult ADD/ADHD DSM IV- Based Diagnostic Screening and Rating Scale (A-ADHD), Personal and Social Performance Scale (PSP) were applied to the cases. In the study, depression starts at an early age in individuals with comorbid ADHD and the depression treatment progress changes negatively. This group of patients is at greater risk in terms of suicidal behavior. For these reasons, clinicians should be careful during ADHD and depression management in adults.

The investigators hypothesize that masculinizing top surgery (e.g., mastectomy and chest masculinization) leads to an improvement in self-report chest dysphoria, gender dysphoria, and gender congruence in assigned-female-at-birth, transgender and non-binary youth and young adults. This is a prospective, observational study that will enroll assigned-female-at-birth, transmasculine spectrum individuals age 13 to 25 years old who are or are not undergoing top surgery. Participants will complete a set of standard of care questionnaires regarding their chest dysphoria (e.g., distress about the chest), gender dysphoria (e.g., distress about a gender identity that does not match assigned sex), and gender congruence (e.g., degree to which an individual feels they are living in their authentic appearance and gender identity). They will complete this same set of questionnaires either three months after their top surgery or three months after the initial set of surveys.

In a number of neuropsychiatric disorders such as depression, both brain inflammation and glutamate mediated excitotoxicity (cell death through over-activated stimulation) are suspected to play a key role. It is difficult, if not impossible, to determine the potential destructiveness of the inflammatory response seen in disease states by studying the brain's inflammatory cells (microglia) activity in isolation. The investigators are proposing to develop the means to concurrently study inflammatory response (i.e., microglial activity) and its potentially devastating consequence (i.e., glutamate excitotoxicity) across the entire brain in order to establish the importance of inflammation. In this study the investigators propose a phased clinical study whereby the early-phase involves the development of our capacity to study inflammation-mediated damage to brain cells, followed by a feasibility study in patients with clinical depression that tests whether concurrent inflammation and glutamate excess could be measured in key brain regions associated with a depressed mood state.

Major depressive depression(MDD) is an severe public mental disorders. The purpose of current study is using big data analysis based on clinical features and immunochemistry to investigate and establish an relapse predict model for patients with first episode MDD.

The Wellness Monitoring for Major Depressive Disorder (MDD) study is a prospective, longitudinal, observational study aimed at identifying biomarkers of relapse in MDD. Results may help refine clinical approach to relapse management, and may ultimately help MDD patients sustain wellness while on antidepressant medication.

To explore electrophysiologic parameters and biomarkers predicting treatment response of patients with major depressive disorder To explore electrophysiologic parameters and biomarkers predicting suicide risk of patients with major depressive disorder

The goal of this project is to examine the neurophysiology of hypersomnia during sleep and wakefulness, to identify biomarkers for excessive sleepiness in neuropsychiatric disorders, and pilot acoustical slow wave induction during sleep in patients with hypersomnolence, to determine if this decreases daytime sleepiness in these patients. The primary study hypotheses are that individuals with hypersomnolence will have reduced slow wave activity (SWA) during sleep and increased waking theta/alpha activity during wake in specific brain regions. A secondary hypothesis is that acoustical slow wave induction in hypersomnolent patients will increase SWA during sleep, reduce theta/alpha activity during wake, and improve subjective sleepiness.

The purpose of this observational study is to study specific outcomes of interest in users of quetiapine compared with all other atypical antipsychotics and specifically olanzapine and risperidone. The outcomes of interest are all-cause mortality, failed suicide attempts, extrapyramidal symptoms, diabetes mellitus, hypothyroidism, acute myocardial infarction and stroke. This retrospective cohort study is based on population-based record linkage system (PHARMO RLS) capturing about 2.5 millions residents in the Netherlands.