A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
The Effects of Genetic Background for Diurnal Preference on Sleep Development in Early Childhood
Tekijät: Morales-Munoz I, Kantojarvi K, Uhre VM, Saarenpaa-Heikkila O, Kylliainen A, Polkki P, Himanen SL, Karlsson L, Karlsson H, Paavonen EJ, Paunio T
Kustantaja: DOVE MEDICAL PRESS LTD
Julkaisuvuosi: 2021
Journal: Nature and science of sleep
Tietokannassa oleva lehden nimi: NATURE AND SCIENCE OF SLEEP
Lehden akronyymi: NAT SCI SLEEP
Vuosikerta: 13
Aloitussivu: 219
Lopetussivu: 228
Sivujen määrä: 10
ISSN: 1179-1608
DOI: https://doi.org/10.2147/NSS.S287163
Verkko-osoite: https://doi.org/10.2147/NSS.S287163
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/53634492
Purpose: No previous research has examined the impact of the genetic background of diurnal preference on children's sleep. Here, we examined the effects of genetic risk score for the liability of diurnal preference on sleep development in early childhood in two population-based cohorts from Finland.Participants and Methods: The primary sample (CHILD-SLEEP, CS) comprised 1420 infants (695 girls), and the replication sample (FinnBrain, FB; 962 girls) 2063 infants. Parent-reported sleep duration, sleep-onset latency and bedtime were assessed at three, eight, 18 and 24 months in CS, and at six, 12 and 24 months in FB. Actigraphy-based sleep latency and efficiency were measured in CS in 365 infants at eight months (168 girls), and in 197 infants at 24 months (82 girls). Mean standard scores for each sleep domain were calculated in both samples. Polygenic risk scores (PRS) were used to quantitate the genetic risk for eveningness (PRSBestFit) and momingness (PRS10kBest).Results: PRSBestFit associated with longer sleep-onset latency and later bedtime, and PRS10kBest related to shorter sleep-onset latency in CS. The link between genetic risk for diurnal preference and sleep-onset latency was replicated in FB, and meta-analysis resulted in associations (P<0.0005) with both PRS-values (PRSBestFit: Z=3.55; and PRS10kBest: Z= -3.68). Finally, PRSBestFit was related to actigraphy-based lower sleep efficiency and longer sleep latency at eight months.Conclusion: Genetic liability to diurnal preference for eveningness relates to longer sleeponset during the first two years of life, and to objectively measured lowered sleep efficiency. These findings enhance our understanding on the biological factors affecting sleep development, and contribute to clarify the physiological sleep architecture in early childhood.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
