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  • Title: Glucocorticoid receptor gene variant is associated with increased body fatness in youngsters.
    Author: Voorhoeve PG, van den Akker EL, van Rossum EF, Koper JW, van Mechelen W, Lamberts SW, Delemarre-van de Waal HA.
    Journal: Clin Endocrinol (Oxf); 2009 Oct; 71(4):518-23. PubMed ID: 19222494.
    Abstract:
    OBJECTIVE: Sensitivity to glucocorticoids is known to be highly variable between individuals and is partly determined by polymorphisms in the glucocorticoid receptor (GR) gene. We investigated the relationship between four GR gene polymorphisms and body composition during puberty and at young adult age. DESIGN: An observational study with repeated measurements. PATIENTS: Two comparable young Dutch cohorts with a generational difference of about 20 years were investigated. The first cohort consisted of 284 subjects born between 1961 and 1965. Measurements were performed from 13 to 36 years of age. The second cohort consisted of 235 subjects born between 1981 and 1989. Measurements were performed from 8 to 14 years of age. MEASUREMENTS: Associations between height, weight, BMI, fat mass (FM) and fat-free mass and four well-known functional polymorphisms were investigated. Results In boys in the younger cohort, the G-allele of the BclI polymorphism (haplotype 2) was associated with a higher body weight, weight-SDS, BMI, BMI-SDS and FM. These associations were not observed in the older cohort. Irrespective of genotype, the younger cohort showed a significantly higher total FM, body weight and BMI compared with the older cohort. CONCLUSIONS: Because the associations between the G-allele of the BclI polymorphism in the GR gene and body FM in boys were only found in a healthy young population, but not in a comparable, generally leaner cohort from an older generation, it is suggested that carriers of this polymorphism are likely to be more vulnerable to fat accumulation in today's obesity promoting environment, than noncarriers.
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