Henriksson, PontusLentini, AntonioAltmäe, SigneBrodin, DavidMüller, PatrickForsum, ElisabetNestor, Colm E.Löf, Marie2022-09-262022-09-262020-11-09Henriksson P, Lentini A, Altmäe S, Brodin D, Müller P, Forsum E, et al. DNA methylation in infants with low and high body fatness. BMC Genomics. 2020 Nov 9;21(1):769http://hdl.handle.net/10668/4146Background: Birth weight is determined by the interplay between infant genetics and the intrauterine environment and is associated with several health outcomes in later life. Many studies have reported an association between birth weight and DNA methylation in infants and suggest that altered epigenetics may underlie birthweight-associated health outcomes. However, birth weight is a relatively nonspecific measure of fetal growth and consists of fat mass and fat-free mass which may have different effects on health outcomes which motivates studies of infant body composition and DNA methylation. Here, we combined genome-wide DNA methylation profiling of buccal cells from 47 full-term one-week old infants with accurate measurements of infant fat mass and fat-free mass using air-displacement plethysmography.Results: No significant association was found between DNA methylation in infant buccal cells and infant body composition. Moreover, no association between infant DNA methylation and parental body composition or indicators of maternal glucose metabolism were found. Conclusions: Despite accurate measures of body composition, we did not identify any associations between infant body fatness and DNA methylation. These results are consistent with recent studies that generally have identified only weak associations between DNA methylation and birthweight. Although our results should be confirmed by additional larger studies, our findings may suggest that differences in DNA methylation between individuals with low and high body fatness may be established later in childhood.enAtribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/DNA MethylationBirth weightBody compositionBody mass indexObesityEpigeneticMetilación de ADNPeso al nacerComposición corporalÍndice de masa corporalObesidadEpigenómicaMedical Subject Headings::Anatomy::Tissues::Connective Tissue::Adipose TissueMedical Subject Headings::Phenomena and Processes::Physiological Phenomena::Body Constitution::Body Weights and Measures::Body Size::Body Weight::Birth WeightMedical Subject Headings::Phenomena and Processes::Chemical Phenomena::Biochemical Phenomena::Body CompositionMedical Subject Headings::Phenomena and Processes::Physiological Phenomena::Body Constitution::Body Weights and Measures::Body Mass IndexMedical Subject Headings::Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::HumansMedical Subject Headings::Persons::Persons::Age Groups::InfantMedical Subject Headings::Phenomena and Processes::Genetic Phenomena::Genetic Processes::DNA MethylationMedical Subject Headings::Anatomy::Tissues::Membranes::Mucous Membrane::Mouth MucosaMedical Subject Headings::Persons::Persons::ParentsMedical Subject Headings::Analytical, Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Diagnostic Techniques and Procedures::PlethysmographyMedical Subject Headings::Chemicals and Drugs::Carbohydrates::Monosaccharides::Hexoses::GlucoseMedical Subject Headings::Phenomena and Processes::Physiological Phenomena::Physiological Processes::Growth and Development::Morphogenesis::Embryonic and Fetal Development::Fetal DevelopmentMedical Subject Headings::Phenomena and Processes::Genetic Phenomena::Genetic Processes::Gene Expression Regulation::Epigenesis, Geneticresearch article33167873Acceso abierto10.1186/s12864-020-07169-71471-2164PMC7654595