A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Genetic predisposition to higher body fat yet lower cardiometabolic risk in children and adolescents
Tekijät: Anna Viitasalo, Theresia M. Schnurr, Niina Pitkänen, Mette Hollensted, Tenna R. H. Nielsen, Katja Pahkala, Niina Lintu, Mads V. Lind, Mustafa Atalay, Christine Frithioff-Bøjsøe, Cilius E. Fonvig, Niels Grarup, Mika Kähönen, Anni Larnkjaer, Oluf Pedersen, Jens-Christian Holm, Kim F. Michaelsen, Timo A. Lakka, Terho Lehtimäki, Olli Raitakari, Torben Hansen, Tuomas O. Kilpeläinen
Kustantaja: NATURE PUBLISHING GROUP
Julkaisuvuosi: 2019
Journal: International Journal of Obesity
Tietokannassa oleva lehden nimi: INTERNATIONAL JOURNAL OF OBESITY
Lehden akronyymi: INT J OBESITY
Vuosikerta: 43
Numero: 10
Aloitussivu: 2007
Lopetussivu: 2016
Sivujen määrä: 10
ISSN: 0307-0565
eISSN: 1476-5497
DOI: https://doi.org/10.1038/s41366-019-0414-0
Background Most obese children show cardiometabolic impairments, such as insulin resistance, dyslipidemia, and hypertension. Yet some obese children retain a normal cardiometabolic profile. The mechanisms underlying this variability remain largely unknown. We examined whether genetic loci associated with increased insulin sensitivity and relatively higher fat storage on the hip than on the waist in adults are associated with a normal cardiometabolic profile despite higher adiposity in children.Methods We constructed a genetic score using variants previously linked to increased insulin sensitivity and/or decreased waist-hip ratio adjusted for body mass index (BMI), and examined the associations of this genetic score with adiposity and cardiometabolic impairments in a meta-analysis of six cohorts, including 7391 European children aged 3-18 years.Results The genetic score was significantly associated with increased degree of obesity (higher BMI-SDS beta = 0.009 SD/ allele, SE = 0.003, P = 0.003; higher body fat mass beta = 0.009, SE = 0.004, P = 0.031), yet improved body fat distribution (lower WHRadjBMI beta = -0.014 SD/allele, SE = 0.006, P = 0.016), and favorable concentrations of blood lipids (higher HDL cholesterol: beta = 0.010 SD/allele, SE = 0.003, P = 0.002; lower triglycerides: beta = -0.011 SD/allele, SE = 0.003, P = 0.001) adjusted for age, sex, and puberty. No differences were detected between prepubertal and pubertal/ postpubertal children. The genetic score predicted a normal cardiometabolic profile, defined by the presence of normal glucose and lipid concentrations, among obese children (OR =1.07 CI 95% 1.01-1.13, P = 0.012, n = 536).Conclusions Genetic predisposition to higher body fat yet lower cardiometabolic risk exerts its influence before puberty.
