Sleep and circadian rhythm profiles in seasonal depression.

Autor: Wescott DL; Department of Psychology, University of Pittsburgh, Pittsburgh, PA, USA. Electronic address: dlw92@pitt.edu., Wallace ML; Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA; Department of Statistics, University of Pittsburgh, Pittsburgh, PA, USA., Hasler BP; Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA., Klevens AM; Department of Psychology, University of Pittsburgh, Pittsburgh, PA, USA., Franzen PL; Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA., Hall MH; Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA., Roecklein KA; Department of Psychology, University of Pittsburgh, Pittsburgh, PA, USA; Center for the Neural Basis of Behavior, University of Pittsburgh, Pittsburgh, PA, USA.
Jazyk: angličtina
Zdroj: Journal of psychiatric research [J Psychiatr Res] 2022 Dec; Vol. 156, pp. 114-121. Date of Electronic Publication: 2022 Oct 10.
DOI: 10.1016/j.jpsychires.2022.10.019
Abstrakt: Sleep and circadian rhythm disruptions are symptoms of, and hypothesized underlying mechanisms in, seasonal depression. Discrepant observational findings and mixed responses to sleep/circadian-based treatments suggest heterogenous sleep and circadian disruptions in seasonal depression, despite these disruptions historically conceptualized as delayed circadian phase and hypersomnia. This study used a data-driven cluster analysis to characterize sleep/circadian profiles in seasonal depression to identify treatment targets for future interventions. Biobehavioral measures of sleep and circadian rhythms were assessed during the winter in individuals with Seasonal Affective Disorder (SAD), subsyndromal-SAD (S-SAD), or nonseasonal, never depressed controls (total sample N = 103). The following variables were used in the cluster analysis: circadian phase (from dim light melatonin onset), midsleep timing, total sleep time, sleep efficiency, regularity of midsleep timing, and nap duration (all from wrist actigraphy). Sleep and circadian variables were compared across clusters and controls. Despite limited sleep/circadian differences between diagnostic groups, there were two reliable (Jaccard Coefficients >0.75) sleep/circadian profiles in SAD/S-SAD individuals: a 'Disrupted sleep' cluster, characterized by irregular and fragmented sleep and an 'Advanced' cluster, characterized by early sleep and circadian timing and longer total sleep times (>7.5 h). Clusters did not differ by depression severity. Midsleep correlated with DLMO (r = 0.56), irregularity (r = 0.3), and total sleep time (r = -0.27). Sleep and circadian disruptions in seasonal depression are not uniformly characterized by hypersomnia and circadian phase delay. Presence of distinct sleep and circadian subgroups in seasonal depression may predict successful treatment response. Prospective assessment and tailoring of individual sleep and circadian disruptions may reduce treatment failures.
Competing Interests: Declaration of competing interest No conflicts of interest to report.
(Copyright © 2022. Published by Elsevier Ltd.)
Databáze: MEDLINE
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