Birth size, postnatal growth and growth during growth hormone treatment in small-for-gestational-age children: associations with IGF1 gene polymorphisms and haplotypes?
| Autor: | Wietske A. Ester, Maria A. J. de Ridder, Anita C. S. Hokken-Koelega, Joyce B. J. van Meurs, André G. Uitterlinden, Nicolette Arends |
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| Přispěvatelé: | Pediatrics, Internal Medicine, Epidemiology |
| Rok vydání: | 2009 |
| Předmět: |
Male
endocrine system medicine.medical_specialty Endocrinology Diabetes and Metabolism Birth weight Biology Short stature Endocrinology Gene Frequency Polymorphism (computer science) Internal medicine medicine Birth Weight Humans Prospective Studies Insulin-Like Growth Factor I Prospective cohort study Child Allele frequency reproductive and urinary physiology Polymorphism Genetic Human Growth Hormone Haplotype Infant Newborn medicine.disease Growth hormone treatment Haplotypes Child Preschool Pediatrics Perinatology and Child Health Infant Small for Gestational Age Small for gestational age Female medicine.symptom hormones hormone substitutes and hormone antagonists |
| Zdroj: | Hormone Research, 72, 15-24. Karger |
| ISSN: | 0301-0163 |
| Popis: | Background: Short small-for-gestational-age (SGA) children experience pre- and postnatal growth restriction, which might be influenced by polymorphisms in the IGF1 gene. The well-known –841(CA)n/192 bp polymorphism has been associated with birth size and cardiovascular disease. Aims: To determine whether birth size, postnatal growth and growth during growth hormone (GH) treatment, were associated with IGF1 gene polymorphisms and haplotypes. Methods: 201 short SGA children were investigated for four IGF1 gene polymorphisms in the promoter (–G1245A, –841(CA)n), intron 2 (+3703(CT)n) and 3UTR (+A1830G). Spontaneous growth and growth during GH treatment were studied. Results: The –1245 A allele was identified as a marker-allele for the well-known –841(CA)n/non-192 bp allele, both part of haplotype 2. The –1245 A allele was not associated with head circumference at birth, but was associated with a postnatal 0.3 SDS smaller head circumference at age 1–3. The –1245 A allele was also associated with a 1-week shorter gestational age which explained the association with a smaller absolute birth size. No associations were found with gestational age-adjusted birth size, height and weight SDS during postnatal life and with growth during GH treatment. Conclusions: The –G1245A SNP appeared to be a marker for the well-known –841(CA)n/192 bp polymorphism. Haplotype 2, of which the –1245 A allele was the marker, was associated with a smaller head circumference SDS during spontaneous postnatal growth, but not during GH treatment. |
| Databáze: | OpenAIRE |
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