Clinical Research Directory

Pupillometry in Delayed Sleep Wake Phase Disorder

The goal of this observational study is to characterize the pupil light response in patients with delayed sleep-wake phase disorder. A subset of participants will take part in a clinical trial to determine if increasing serotonin can alter the circadian response to light. The main questions it aims to answer is: Are there differences in the light response in patients with delayed sleep-wake phase disorder? Does citalopram increase melatonin suppression in patients with delayed sleep-wake phase disorder? Participants will complete activity and melatonin testing at home to determine their circadian timing. This will be followed by an eye test looking at the pupil response to different light stimuli. A subset of participants will complete two inpatient admissions where melatonin levels will be sampled and they will be exposed to a bright light. During one round of testing they will receive a placebo and in the other round of testing they will take a single dose of citalopram, a selective serotonin reuptake inhibitor.

Correcting Circadian Rhythms to Breakthrough in Bipolar Disorder

The purpose of this study is to test whether a dietary supplement (low-dose melatonin) commonly used to treat night owls, administered in conjunction with a behavioral sleep intervention, will help to shift the brain clock earlier and improve mood and sleep in bipolar disorder. Eligible participants will be randomized to receive melatonin plus a behavioral sleep intervention or placebo plus a behavioral sleep placebo. The hypotheses for this study include: * Melatonin plus behavioral sleep intervention (compared to placebo plus behavioral sleep placebo) will produce a greater advance of dim light melatonin onset (DLMO), between pre- and post-treatment. * Melatonin (compared to placebo) will produce a greater reduction in Patient Health Questionnaire-9 score between pre- and post-treatment.

Sleep in Psychiatric Care (SIP): Treatment for Comorbid Delayed Sleep-Wake Phase Disorder (DSWPD)

Sleep disorders commonly co-occur with psychiatric disorders. Sleep disorders are often treated with medication or not at all in psychiatric care, although there exist a plethora of documentation of the effectiveness of sleep interventions. There is also an increase in studies showing effectiveness of sleep-interventions when the sleep disorder co-occurs with psychiatric illness. The recommended treatment for Delayed Sleep-Wake phase disorder is light therapy at gradually advanced timing and/or melatonin administered in order to help phase-advance the circadian rhythm. There is a great gap in the knowledge on how sleep disorders can be treated effectively when they occur comorbid to moderate and severe psychiatric illness. In this project the we therefore seek to investigate the effect of psychological and behavioural, group-based treatment in a randomized controlled trial (RCT) where sleep and psychiatric symptoms are the primary outcome measures.

Promoting Sleep and Physical Activity Among Adolescent Psychiatric Patients

Mental health disorders pose a significant burden on adolescent populations globally, often accompanied by sleep disturbances. Emerging evidence suggests that addressing sleep issues can improve mental health outcomes, while physical activity is increasingly recognized as beneficial for both sleep and mental well-being. This study aims to assess the effectiveness of a novel intervention (SLEEPAC), combining cognitive-behavioral therapy for insomnia (CBT-I), circadian treatment, and PA counseling, compared to treatment as usual (TAU), in improving psychopathology among adolescent psychiatric outpatients with sleep disturbances. Secondary outcomes include improvements in sleep health, physical activity levels, cognitive performance and self-esteem. Additionally, the study seeks to explore the predictive value of sleep neurophysiological biomarkers using high-density sleep electroencephalography (EEG), contributing to advancements in precision psychiatry for this population.