View clinical trials related to Chronobiology Disorders.
Filter by:The study will test a sleep-health intervention that leverages the science on habit formation. It will evaluate if adding a text messaging intervention improves habit formation. The participants will be 18-30 years old.
The precise role of the intrinsic circadian regulatory mechanism behind the pathogenesis of enuresis is not fully understood, but in theory, circadian rhythm irregularity may be the primary pathogenic mechanism not only for urinary outflow mechanisms but also for nocturnal bladder function. The proximity between SCN centers that control AVP release, sleep/arousal, voiding, and baroreregulation may provide the basis for circadian rhythm disturbance in one or more of these biological functions. Ganglion cells containing melanopsin pigment in the retina transmit the information they receive from the outside world about the light-dark state to the SCN via the retinohypothalamic pathway. Peripapillary retinal nerve fiber layer (RNFL) thickness, optic nerve head and macula are examined most frequently for the diagnosis of glaucoma and the detection of progression with optical coherence tomography (OCT). If differences in ganglion cell thickness can be detected using OCT in these children, a new avenue in Enuresis Nocturna may be opened.
A follow-up of a cohort of participants recruited for a prior study will be conducted. In the prior study, 10-18 years olds were provided one of two treatments to improve the sleep of adolescent night-owls. The follow-up will be approximately 6-years following participation in the prior study. The goal is to establish long-term outcomes in sleep and circadian functioning, in the five health-relevant domains and in engagement in sleep health behavior.
Habits impact nearly every domain of one's physical and mental health. Evidence-based psychological treatments (EBPTs) are interventions targeting psychological processes that cause and/or maintain mental illness and that have been developed and evaluated scientifically. An implicit goal of EBPTs is to disrupt unwanted habits and develop desired habits. Yet, there has been insufficient attention given to habit formation principles, theory and measures in the development and delivery of EBTPs. In preparing to conduct a 5-year R01 on this topic, the investigators are conducting this experiment to better understand habit formation. The purpose is to distill, study and clarify key concepts in habit formation before embarking on the 5-year R01. This is necessary as there is surprisingly little research to guide key decisions, particularly for the process of dismantling unwanted habits. Hence, the aim of this experiment is to compare strategies discussed in the scientific literature, which have been minimally studied, to dismantle unwanted habits. The hypothesis tested is that each of the active strategies will be superior to the no intervention group. The study is exploratory as to which of the active strategies will be most effective.
As in healthy term babies, the ideal food for preterm infants and sick term babies is breast milk. There are many studies indicating that the composition of breast milk can vary from mother to mother, according to the gestational week of the baby and gender. In new researches on breast milk content; It is argued that breast milk is different during the day and at night, that the micro and macro nutrient content, hormones and some enzymes show different levels of secretion at different times of the day, and that breast milk has a circadian rhythm. This research is designed as a prospective, randomized, controlled type. The study will be carried out in order to evaluate the effect of Chronobiological Approach Nutrition Model application on baby's growth parameters and discharge time in preterm babies hospitalized in Neonatal Intensive Care Unit (NICU). Simple randomization method will be used for the study and the babies will be divided into intervention(n=40) and control groups(n=40). The research was carried out with 80 babies followed up in the neonatal intensive care unit. The milk of the intervention group patients will be matched circadian and given to the babies, the milk of the control group patients will be given without matching according to the clinical routine practice. Demographic data, anthropometric measurements (weight, height, head circumference of all babies will be recorded in the "Baby Monitoring Form" created by the researcher.
There is strong reason to believe that sleep promotion during adolescence could yield long-term health rewards; the investigators' data show that, when they get more sleep, Morning Larks have impressively reduced intake of overall calories and foods high in glycemic load that are linked to long-term health risk. Before that can be translated into major public health interventions, however, the field needs to understand why similar changes in sleep had no effect, or even an adverse effect, on adolescent Night Owls. This experimental study will clarify why there have been such discrepant effects across Morning Larks and Night Owls, with the goal of more broadly harnessing the promise of improved sleep in the prevention of obesity and long-term morbidity.
This study will evaluate the impact of sleep, circadian health and melatonin on flu vaccine immunogenicity.
The aim of this project is to determine the effect of nursing care provided to intensive unit care patients according to their circadian rhythms on sleep quality, pain, anxiety and delirium.
Binge eating disorder (BED) shows prominent circadian features that suggest a delay in circadian phase, and preliminary evidence shows binge eating may be responsive to chronobiological interventions, implicating a circadian system dysfunction in its pathophysiology. What remains lacking, however, is comprehensive knowledge of the characteristics of circadian system dysfunction in BED, and whether this dysfunction represents a therapeutic target in BED. There is therefore a critical need to characterize circadian system dysfunction in BED, and evaluate it as a potential therapeutic target. Without such information, the understanding on the role of the circadian system in BED and its potential as a new therapeutic target will remain limited.
Current methods for assessing circadian timing require sampling over hours (or even up to a day) while the patient is in controlled conditions. The investigators aim to develop a method that can estimate individual circadian time with a single blood sample taken at any time of the day or night. To do this, the investigators will use two state of the art methods, a plasma proteomics-based method to identify a panel of rhythmic proteins (extending our preliminary data) and a whole blood-derived monocyte-based method using a panel of 15 transcripts (to validate and extend a recent study). We will test both methods in a series of patients with circadian rhythm sleep disorders. We will validate separately the proteomics-based biomarker and the monocyte-based transcript biomarker, and also explore whether combining them can improve the accuracy of our timing estimates. In all cases, circadian phase estimates from the biomarker panels will be compared with those derived from plasma or saliva melatonin (the current "gold-standard" circadian phase marker).