| Autor: |
Mitchell SM; Department of Diabetes and Vascular Medicine, Peninsula Medical School, Exeter, United Kingdom EX2 5AX., Hattersley AT, Knight B, Turner T, Metcalf BS, Voss LD, Davies D, McCarthy A, Wilkin TJ, Smith GD, Ben-Shlomo Y, Frayling TM |
| Jazyk: |
angličtina |
| Zdroj: |
The Journal of clinical endocrinology and metabolism [J Clin Endocrinol Metab] 2004 Jan; Vol. 89 (1), pp. 310-7. |
| DOI: |
10.1210/jc.2003-030605 |
| Abstrakt: |
The insulin gene variable number of tandem repeats minisatellite (INS-VNTR) class III allele is associated with altered fetal growth, type 2 diabetes risk (especially when paternally inherited), and insulin and IGF2 gene expression. Further studies are needed to establish the role of the INS-VNTR in fetal growth and assess whether its effects depend on the parent of origin. We analyzed the INS-VNTR-linked -23 Hph1 polymorphism in 2283 subjects, comprising 1184 children and 1099 parents. There were no differences (P < 0.05) in birth weight between offspring of the three genotypes: III/III (n = 108) vs. I/I (n = 558), effect size, -8 g (P = 0.87); and I/III (n = 464) vs. I/I, effect size, -19 g (P = 0.54). We observed no differences in head circumference [III/III (n = 95) vs. I/I (n = 470), effect size, -0.14 cm; P = 0.31] or birth length. No differences were observed when stratifying by postnatal growth realignments [nonchangers III/III (n = 37) vs. I/I (n = 170), effect size, -43 g; P = 1.00] or by parent of origin of the class III allele (presence of paternal III allele effect size, -15 g; P = 0.74). INS-VNTR was nominally associated (P < 0.05) with body mass index and insulin resistance, but not with beta-cell function, in young adults. In the largest study to date, we found a lack of support for a role for INS-VNTR in fetal growth and nominal association with type 2 diabetes-related intermediate traits. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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