Circulating IGF1 and IGF2 and SNP genotypes in men and pregnant and non-pregnant women
| Autor: | K L Gatford, G K Heinemann, S D Thompson, J V Zhang, S Buckberry, J A Owens, G A Dekker, C T Roberts |
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| Přispěvatelé: | Gatford, Kathryn L, Heinemann, GK, Thompson, SD, Zhang, JV, Buckberry, S, Owens, JA, Dekker, GA, Roberts, CT |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
endocrine system
animal structures endocrine system diseases Endocrinology Diabetes and Metabolism 030209 endocrinology & metabolism 03 medical and health sciences 0302 clinical medicine Endocrinology Genotype Internal Medicine SNP Medicine human SNP genotype 030304 developmental biology Genetics 0303 health sciences business.industry Research IGF1 IGF2 Non pregnant female genital diseases and pregnancy complications pregnancy business hormones hormone substitutes and hormone antagonists |
| Zdroj: | Endocrine Connections |
| Popis: | Circulating IGFs are important regulators of prenatal and postnatal growth, and of metabolism and pregnancy, and change with sex, age and pregnancy. Single-nucleotide polymorphisms (SNPs) in genes coding for these hormones associate with circulating abundance of IGF1 and IGF2 in non-pregnant adults and children, but whether this occurs in pregnancy is unknown. We therefore investigated associations of plasma IGF1 and IGF2 with age and genotype at candidate SNPs previously associated with circulating IGF1, IGF2 or methylation of the INS–IGF2–H19 locus in men (n=134), non-pregnant women (n=74) and women at 15 weeks of gestation (n=98). Plasma IGF1 concentrations decreased with age (PPINS–IGF2–H19 locus were associated with plasma IGF1 (IGF2 rs680, IGF2 rs1004446 and IGF2 rs3741204) and IGF2 (IGF2 rs1004446, IGF2 rs3741204 and H19 rs217727). In single SNP models, effects of IGF2 rs680 were similar between groups, with higher plasma IGF1 concentrations in individuals with the GG genotype when compared with GA (P=0.016), or combined GA and AA genotypes (P=0.003). SNPs in the IGF2 gene associated with IGF1 or IGF2 were in linkage disequilibrium, hence these associations could reflect other genotype variations within this region or be due to changes in INS–IGF2–H19 methylation previously associated with some of these variants. As IGF1 in early pregnancy promotes placental differentiation and function, lower IGF1 concentrations in pregnant women carrying IGF2 rs680 A alleles may affect placental development and/or risk of pregnancy complications. |
| Databáze: | OpenAIRE |
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