An IGF-I promoter polymorphism modifies the relationships between birth weight and risk factors for cardiovascular disease and diabetes at age 36

S.J. te Velde, E.F. van Rossum, P.G. Voorhoeve, J.W.R. Twisk, H.A. Delemarre-van de Waal, C.D.A. Stehouwer, W. van Mechelen, S.W. Lamberts, H.C.G. Kemper

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    Abstract

    Objective: To investigate whether IGF-I promoter polymorphism was associated with birth weight and risk factors for cardiovascular disease (CVD) and type 2 diabetes (T2DM), and whether the birth weight - risk factor relationship was the same for each genotype. Design and participants: 264 subjects (mean age 36 years) had data available on birth weight, IGF-I promoter polymorphism genotype, CVD and T2DM risk factors. Student's t-test and regression analyses were applied to analyse differences in birth weight and differences in the birth weight - risk factors relationship between the genotypes. Results: Male variant carriers (VCs) of the IGF-I promoter polymorphism had a 0.2 kg lower birth weight than men with the wild type allele (p=0.009). Of the risk factors for CVD and T2DM, solely LDL concentration was associated with the genotype for the polymorphism. Most birth weight - risk factor relationships were stronger in the VC subjects; among others the birth weight - systolic blood pressure relationship: 1 kg lower birth weight was related to an 8.0 mmHg higher systolic blood pressure Conclusions: The polymorphism in the promoter region of the IGF-I gene is related to birth weight in men only, and to LDL concentration only. Furthermore, the genotype for this polymorphism modified the relationships between birth weight and the risk factors, especially for systolic and diastolic blood pressure.
    Original languageEnglish
    Article number5
    Pages (from-to)1-9
    Number of pages9
    JournalBMC Endocrine Disorders
    Volume5
    Issue number1
    DOIs
    Publication statusPublished - 1 Jun 2005

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