The Interplay of Variants Near LEKR and CCNL1 and Social Stress in Relation to Birth Size

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Khan, Anokhi AliUniv London Imperial Coll Sci Technol & Med, Ctr Environm & Hlth, Hlth Protect Agcy, Med Res Council,Dept Epidemiol & Biostat, London, England (author)

The Interplay of Variants Near LEKR and CCNL1 and Social Stress in Relation to Birth Size

Article/chapterEnglish2012

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2012-06-07
Public Library of Science (PLoS),2012
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LIBRIS-ID:oai:DiVA.org:miun-17067
https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-17067URI
https://doi.org/10.1371/journal.pone.0038216DOI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

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Background: We previously identified via a genome wide association study variants near LEKR and CCNL1 and in the ADCY5 genes lead to lower birthweight. Here, we study the impact of these variants and social stress during pregnancy, defined as social adversity and neighborhood disparity, on infant birth size. We aimed to determine whether the addition of genetic variance magnified the observed associations. Methodology/Principal Findings: We analyzed data from the Northern Finland Birth Cohort 1986 (n = 5369). Social adversity was defined by young maternal age (<20 years), low maternal education (<11 years), and/or single marital status. Neighborhood social disparity was assessed by discrepancy between neighborhoods relative to personal socio-economic status. These variables are indicative of social and socioeconomic stress, but also of biological risk. The adjusted multiple regression analysis showed smaller birth size in both infants of mothers who experienced social adversity (birthweight by -40.4 g, 95% CI -61.4, -19.5; birth length -0.14 cm, 95% CI -0.23, -0.05; head circumference -0.09 cm 95% CI -0.15, -0.02) and neighborhood disparity (birthweight -28.8 g, 95% CI -47.7, -10.0; birth length -0.12 cm, 95% CI -0.20, -0.05). The birthweight-lowering risk allele (SNP rs900400 near LEKR and CCNL1) magnified this association in an additive manner. However, likely due to sample size restriction, this association was not significant for the SNP rs9883204 in ADCY5. Birth size difference due to social stress was greater in the presence of birthweight-lowering alleles. Conclusions/Significance: Social adversity, neighborhood disparity, and genetic variants have independent associations with infant birth size in the mutually adjusted analyses. If the newborn carried a risk allele rs900400 near LEKR/CCNL1, the impact of stress on birth size was stronger. These observations give support to the hypothesis that individuals with genetic or other biological risk are more vulnerable to environmental influences. Our study indicates the need for further research to understand the mechanisms by which genes impact individual vulnerability to environmental insults.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Hälsovetenskap Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi hsv//swe
MEDICAL AND HEALTH SCIENCES Health Sciences Public Health, Global Health, Social Medicine and Epidemiology hsv//eng
MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Medicinsk genetik hsv//swe
MEDICAL AND HEALTH SCIENCES Basic Medicine Medical Genetics hsv//eng
anthropometric parameters; article; birth size; birth weight; body height; body mass; CCNL 1 gene; cohort analysis; controlled study; education; effect size; female; Finland; gene; gene frequency; genetic association; genetic variability; genotype; gestational age; head circumference; human; LERK gene; male; marriage; maternal age; maternal smoking; outcome assessment; parental schooling; parenthood; parity; pregnancy; pregnancy outcome; risk factor; sex difference; single nucleotide polymorphism; social status; social stress

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Rodriguez, AlinaMittuniversitetet,Institutionen för samhällsvetenskap (-2013)(Swepub:miun)alirod (author)
Sebert, SylvainUniv London Imperial Coll Sci Technol & Med, Ctr Environm & Hlth, Hlth Protect Agcy, Med Res Council,Dept Epidemiol & Biostat, London, England (author)
Kaakinen, MarikaUniv Oulu, Inst Hlth Sci, Oulu, Finland (author)
Cauchi, StephaneUniv Lille 2, Inst Pasteur, Inst Biol Lille, Ctr Natl Rech Sci,Unites Mixte Rech 8199, F-59800 Lille, France (author)
Froguel, PhilippeUniv Lille 2, Inst Pasteur, Inst Biol Lille, Ctr Natl Rech Sci,Unites Mixte Rech 8199, F-59800 Lille, France (author)
Hartikainen, Anna-LiisaUniv Oulu, Dept Clin Sci Obstet & Gynecol, Oulu, Finland (author)
Pouta, AnneliNatl Inst Hlth & Welf, Oulu, Finland (author)
Jarvelin, Marjo-RiittaUniv London Imperial Coll Sci Technol & Med, Ctr Environm & Hlth, Hlth Protect Agcy, Med Res Council,Dept Epidemiol & Biostat, London, England (author)
Univ London Imperial Coll Sci Technol & Med, Ctr Environm & Hlth, Hlth Protect Agcy, Med Res Council,Dept Epidemiol & Biostat, London, EnglandInstitutionen för samhällsvetenskap (-2013) (creator_code:org_t)

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In:PLOS ONE: Public Library of Science (PLoS)7:6, s. Art. no. e38216-1932-6203

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MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Health Sciences; and Public Health Gl ...

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