Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/195439
Title: | Differential DNA methylation profile in infants born small-for-gestational-age: association with markers of adiposity and insulin resistance from birth to age 24 months |
Author: | Díaz, Marta Garde, Edurne López Bermejo, Abel Zegher, Francis de Ibáñez Toda, Lourdes |
Keywords: | Infants nadons Pes corporal Composició del cos humà Resistència a la insulina ADN Metilació Newborn infants Body weight Body composition Insulin resistance DNA Methylation |
Issue Date: | Oct-2020 |
Publisher: | BMJ Publishing Group |
Abstract: | Introduction: Prenatal growth restraint followed by rapid postnatal weight gain increases lifelong diabetes risk. Epigenetic dysregulation in critical windows could exert long-term effects on metabolism and confer such risk. Research design and methods: We conducted a genome-wide DNA methylation profiling in peripheral blood from infants born appropriate-for-gestational-age (AGA, n=30) or small-for-gestational-age (SGA, n=21, with postnatal catch-up) at age 12 months, to identify new genes that may predispose to metabolic dysfunction. Candidate genes were validated by bisulfite pyrosequencing in the entire cohort. All infants were followed since birth; cord blood methylation profiling was previously reported. Endocrine-metabolic variables and body composition (dual-energy X-ray absorptiometry) were assessed at birth and at 12 and 24 months. Results: GPR120 (cg14582356, cg01272400, cg23654127, cg03629447), NKX6.1 (cg22598426, cg07688460, cg17444738, cg12076463, cg10457539), CPT1A (cg14073497, cg00941258, cg12778395) and IGFBP 4 (cg15471812) genes were hypermethylated (GPR120, NKX6.1 were also hypermethylated in cord blood), whereas CHGA (cg13332653, cg15480367, cg05700406), FABP5 (cg00696973, cg10563714, cg16128701), CTRP1 (cg19231170, cg19472078, cg0164309, cg07162665, cg17758081, cg18996910, cg06709009), GAS6 (N/A), ONECUT1 (cg14217069, cg02061705, cg26158897, cg06657050, cg15446043) and SLC2A8 (cg20758474, cg19021975, cg11312566, cg12281690, cg04016166, cg03804985) genes were hypomethylated in SGA infants. These genes were related to β-cell development and function, inflammation, and glucose and lipid metabolism and associated with body mass index, body composition, and markers of insulin resistance at 12 and 24 months. Conclusion: In conclusion, at 12 months, abnormal methylation of GPR120 and NKX6.1 persists and new epigenetic marks further involved in adipogenesis and energy homeostasis arise in SGA infants. These abnormalities may contribute to metabolic dysfunction and diabetes risk later in life. |
Note: | Reproducció del document publicat a: https://doi.org/10.1136/bmjdrc-2020-001402 |
It is part of: | BMJ Open Diabetes Research & Care, 2020, vol. 8, num. 1, p. e001402 |
URI: | http://hdl.handle.net/2445/195439 |
Related resource: | https://doi.org/10.1136/bmjdrc-2020-001402 |
ISSN: | 2052-4897 |
Appears in Collections: | Articles publicats en revistes (Cirurgia i Especialitats Medicoquirúrgiques) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
709027.pdf | 722.74 kB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License