Cited by 92Circadian rhythm and melatoninSleep and related disordersBipolar Disorder and Treatment

Circadian rhythms and psychiatric profiles in young adults with unipolar depressive disorders

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Robillard, Rébecca, Carpenter, Joanne S., Rogers, Naomi L., Fares, Sarah, Grierson, Ashlee B., Hermens, Daniel F., Naismith, Sharon L., Mullin, Sharon J. +4 more·2018·Translational Psychiatry

Abstract

Abnormalities in circadian rhythms have been reported in people with mood disorders, but these abnormalities are marked by considerable inter-individual variability. This study aimed to identify pathophysiological subgroups on the basis of circadian markers and evaluate how these subgroups relate to psychiatric profiles. Thirty-five young adults (18–31 years old) receiving clinical care for unipolar depressive disorders and 15 healthy controls took part to this study. The Hamilton Rating Scale for Depression and the Young Mania rating scale were used to evaluate the severity of mood symptoms in participants with depressive disorders. All participant underwent ambulatory sleep monitoring with actigraphy for about 12 days before attending a laboratory-based chronobiological assessment which included repeated salivary samples to determine dim light melatonin onset (DLMO) and continuous core body temperature (CBT) monitoring using an ingestible temperature sensor. Cluster analyses were conducted across all participants to identify subgroups with consistent circadian timing profiles based on DLMO and the nocturnal minima of CBT. Two clusters were identified: ‘delayed’ and ‘conventional timing’ circadian phase. Descriptive analyses showed that the delayed cluster was characterised by abnormal time relationships between circadian phase markers and the sleep–wake cycle. Importantly, individuals from the delayed cluster had worse depression severity (t(28) = −2.7, p = 0.011) and hypomanic symptoms (Z = −2.2, p = 0.041) than their peers with conventional circadian timing. These findings suggest that delayed and disorganised circadian rhythms may be linked to worse psychiatric profiles in young people with depressive disorders.

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Authors
Robillard, R., Carpenter, J. S., Rogers, N. L., Fares, S., Grierson, A. B., Hermens, D. F., Naismith, S. L., Mullin, S. J., Feilds, K.-L., Glozier, N., Scott, E. M., & Hickie, I. B.
Affiliations
  • University of Ottawa (CA)
  • The University of Sydney (AU)
Corresponding author
Robillard, Rébecca
Venue
Translational Psychiatry
Published
2018-10-09
Volume
8
Issue
1
Pages
213-213
ISSN
2158-3188 (ISSN-L)
OpenAlex
W2896565847
Cited by
92
References
45
Citations by year
2026: 8 · 2025: 7 · 2024: 15 · 2023: 8 · 2022: 13 · 2021: 19 · 2020: 13 · 2019: 8 · 2018: 1
FWCI
5.71
Type
journal article
Language
en
Open access
Locations
  • Translational Psychiatry (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • Medical Research Council
  • National Health and Medical Research Council (464914)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
  • Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
Keywords
circadian rhythm, major depressive disorder, young adults, dim light melatonin onset, core body temperature, circadian phase, sleep-wake cycle, hypomania, depression severity, mood disorders, chronobiology, actigraphy, salivary biomarkers
MeSH terms
Adolescent, Adult, Body Temperature, Circadian Rhythm, Depressive Disorder, Female, Humans, Male, Melatonin, Psychiatric Status Rating Scales, Severity of Illness Index, Sleep, Young Adult, Actigraphy

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