Genetic markers of adult obesity risk are associated with greater early infancy weight gain and growth.

<h4>Background</h4>Genome-wide studies have identified several common genetic variants that are robustly associated with adult obesity risk. Exploration of these genotype associations in children may provide insights into the timing of weight changes leading to adult obesity.<h4>Me...

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Autores principales: Cathy E Elks, Ruth J F Loos, Stephen J Sharp, Claudia Langenberg, Susan M Ring, Nicholas J Timpson, Andrew R Ness, George Davey Smith, David B Dunger, Nicholas J Wareham, Ken K Ong
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Publicado: Public Library of Science (PLoS) 2010
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Acceso en línea:https://doaj.org/article/680364c8d8a34ce1b460de89ce380cd2
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spelling oai:doaj.org-article:680364c8d8a34ce1b460de89ce380cd22021-12-02T19:56:11ZGenetic markers of adult obesity risk are associated with greater early infancy weight gain and growth.1549-12771549-167610.1371/journal.pmed.1000284https://doaj.org/article/680364c8d8a34ce1b460de89ce380cd22010-05-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20520848/?tool=EBIhttps://doaj.org/toc/1549-1277https://doaj.org/toc/1549-1676<h4>Background</h4>Genome-wide studies have identified several common genetic variants that are robustly associated with adult obesity risk. Exploration of these genotype associations in children may provide insights into the timing of weight changes leading to adult obesity.<h4>Methods and findings</h4>Children from the Avon Longitudinal Study of Parents and Children (ALSPAC) birth cohort were genotyped for ten genetic variants previously associated with adult BMI. Eight variants that showed individual associations with childhood BMI (in/near: FTO, MC4R, TMEM18, GNPDA2, KCTD15, NEGR1, BDNF, and ETV5) were used to derive an "obesity-risk-allele score" comprising the total number of risk alleles (range: 2-15 alleles) in each child with complete genotype data (n = 7,146). Repeated measurements of weight, length/height, and body mass index from birth to age 11 years were expressed as standard deviation scores (SDS). Early infancy was defined as birth to age 6 weeks, and early infancy failure to thrive was defined as weight gain between below the 5th centile, adjusted for birth weight. The obesity-risk-allele score showed little association with birth weight (regression coefficient: 0.01 SDS per allele; 95% CI 0.00-0.02), but had an apparently much larger positive effect on early infancy weight gain (0.119 SDS/allele/year; 0.023-0.216) than on subsequent childhood weight gain (0.004 SDS/allele/year; 0.004-0.005). The obesity-risk-allele score was also positively associated with early infancy length gain (0.158 SDS/allele/year; 0.032-0.284) and with reduced risk of early infancy failure to thrive (odds ratio = 0.92 per allele; 0.86-0.98; p = 0.009).<h4>Conclusions</h4>The use of robust genetic markers identified greater early infancy gains in weight and length as being on the pathway to adult obesity risk in a contemporary birth cohort.Cathy E ElksRuth J F LoosStephen J SharpClaudia LangenbergSusan M RingNicholas J TimpsonAndrew R NessGeorge Davey SmithDavid B DungerNicholas J WarehamKen K OngPublic Library of Science (PLoS)articleMedicineRENPLoS Medicine, Vol 7, Iss 5, p e1000284 (2010)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
spellingShingle Medicine
R
Cathy E Elks
Ruth J F Loos
Stephen J Sharp
Claudia Langenberg
Susan M Ring
Nicholas J Timpson
Andrew R Ness
George Davey Smith
David B Dunger
Nicholas J Wareham
Ken K Ong
Genetic markers of adult obesity risk are associated with greater early infancy weight gain and growth.
description <h4>Background</h4>Genome-wide studies have identified several common genetic variants that are robustly associated with adult obesity risk. Exploration of these genotype associations in children may provide insights into the timing of weight changes leading to adult obesity.<h4>Methods and findings</h4>Children from the Avon Longitudinal Study of Parents and Children (ALSPAC) birth cohort were genotyped for ten genetic variants previously associated with adult BMI. Eight variants that showed individual associations with childhood BMI (in/near: FTO, MC4R, TMEM18, GNPDA2, KCTD15, NEGR1, BDNF, and ETV5) were used to derive an "obesity-risk-allele score" comprising the total number of risk alleles (range: 2-15 alleles) in each child with complete genotype data (n = 7,146). Repeated measurements of weight, length/height, and body mass index from birth to age 11 years were expressed as standard deviation scores (SDS). Early infancy was defined as birth to age 6 weeks, and early infancy failure to thrive was defined as weight gain between below the 5th centile, adjusted for birth weight. The obesity-risk-allele score showed little association with birth weight (regression coefficient: 0.01 SDS per allele; 95% CI 0.00-0.02), but had an apparently much larger positive effect on early infancy weight gain (0.119 SDS/allele/year; 0.023-0.216) than on subsequent childhood weight gain (0.004 SDS/allele/year; 0.004-0.005). The obesity-risk-allele score was also positively associated with early infancy length gain (0.158 SDS/allele/year; 0.032-0.284) and with reduced risk of early infancy failure to thrive (odds ratio = 0.92 per allele; 0.86-0.98; p = 0.009).<h4>Conclusions</h4>The use of robust genetic markers identified greater early infancy gains in weight and length as being on the pathway to adult obesity risk in a contemporary birth cohort.
format article
author Cathy E Elks
Ruth J F Loos
Stephen J Sharp
Claudia Langenberg
Susan M Ring
Nicholas J Timpson
Andrew R Ness
George Davey Smith
David B Dunger
Nicholas J Wareham
Ken K Ong
author_facet Cathy E Elks
Ruth J F Loos
Stephen J Sharp
Claudia Langenberg
Susan M Ring
Nicholas J Timpson
Andrew R Ness
George Davey Smith
David B Dunger
Nicholas J Wareham
Ken K Ong
author_sort Cathy E Elks
title Genetic markers of adult obesity risk are associated with greater early infancy weight gain and growth.
title_short Genetic markers of adult obesity risk are associated with greater early infancy weight gain and growth.
title_full Genetic markers of adult obesity risk are associated with greater early infancy weight gain and growth.
title_fullStr Genetic markers of adult obesity risk are associated with greater early infancy weight gain and growth.
title_full_unstemmed Genetic markers of adult obesity risk are associated with greater early infancy weight gain and growth.
title_sort genetic markers of adult obesity risk are associated with greater early infancy weight gain and growth.
publisher Public Library of Science (PLoS)
publishDate 2010
url https://doaj.org/article/680364c8d8a34ce1b460de89ce380cd2
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