Compared Heritability of Chronotype Instruments in a Single Population Sample

Autor(es)

Leocadio-Miguel, Mario A. ^{[1, 2]} ; Ruiz, Francieli S. ^{[1, 3]} ; Ahmed, Sabrina S. ^[1] ; Taporoski, Tamara P. ^[4] ; Horimoto, Andrea R. V. R. ^{[3, 5]} ; Beijamini, Felipe ^[6] ; Pedrazzoli, Mario ^[7] ; Knutson, Kristen L. ^[4] ; Pereira, Alexandre C. ^[3] ; von Schantz, Malcolm ^[1]

Afiliação do(s) autor(es)

^[1] Univ Surrey, Fac Hlth & Med Sci, Guildford GU2 7XH, Surrey - England

^[2] Univ Fed Rio Grande do Norte, Dept Physiol & Behav, Natal, RN - Brazil

^[3] Univ Sao Paulo, Incor, Sch Med, Sao Paulo - Brazil

^[4] Northwestern Univ, Feinberg Sch Med, Chicago, IL 60611 - USA

^[5] Univ Washington, Sch Publ Hlth, Dept Biostat, Seattle, WA 98195 - USA

^[6] Fed Univ Fronteira Sul, Realeza - Brazil

^[7] Univ Sao Paulo, Sch Arts Sci & Humanities, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF BIOLOGICAL RHYTHMS; v. 36, n. 5 JUL 2021.
• Citações Web of Science: 0

Resumo

It is well established that the oldest chronotype questionnaire, the morningness-eveningness questionnaire (MEQ), has significant heritability, and several associations have been reported between MEQ score and polymorphisms in candidate clock genes, a number of them reproducibly across populations. By contrast, there are no reports of heritability and genetic associations for the Munich chronotype questionnaire (MCTQ). Recent genome-wide association studies (GWAS) from large cohorts have reported multiple associations with chronotype as assessed by a single self-evaluation question. We have taken advantage of the availability of data from all these instruments from a single sample of 597 participants from the Brazilian Baependi Heart Study. The family-based design of the cohort allowed us to calculate the heritability (h(2)) for these measures. Heritability values for the best-fitted models were 0.37 for MEQ, 0.32 for MCTQ, and 0.28 for single-question chronotype (MEQ Question 19). We also calculated the heritability for the two major factors recently derived from MEQ, ``Dissipation of sleep pressure{''} (0.32) and ``Build-up of sleep pressure{''} (0.28). This first heritability comparison of the major chronotype instruments in current use provides the first quantification of the genetic component of MCTQ score, supporting its future use in genetic analysis. Our findings also suggest that the single chronotype question that has been used for large GWAS analyses captures a larger proportion of the dimensions of chronotype than previously thought. (AU)

• Processo FAPESP: 11/05804-5 - Caracterização fenotípica de ritmos circadianos em indivíduos com diferentes genótipos para polimorfismos nos genes relógio em diferentes regiões do Brasil: ênfase na investigação do gene PER3 e o efeito latitude
• Beneficiário: Mario Pedrazzoli Neto
• Modalidade de apoio: Auxílio à Pesquisa - Regular