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  • Title: Insulin and HOMA in Spanish prepubertal children: relationship with lipid profile.
    Author: Garcés C, Cano B, Granizo JJ, Benavente M, Viturro E, Gutiérrez-Guisado J, de Oya I, Lasunción MA, de Oya M.
    Journal: Clin Biochem; 2005 Oct; 38(10):920-4. PubMed ID: 16081057.
    Abstract:
    OBJECTIVE: The effects of insulin or insulin resistance on the lipid profile seem to change with age. The aim of this study was to analyze insulin levels and an insulin resistance index and to investigate the relationship between these and the lipid profile in a population-based sample of Spanish prepubertal children. METHODS: 1048 (524 boys and 524 girls) randomly selected prepubertal children were studied. Children were 6 to 8 years old with a mean age of 6.7. Plasma lipid, FFA and insulin levels were measured. The homeostatic model assessment (HOMA) was calculated as an indicator of insulin resistance. RESULTS: When analyzing percentile values of insulin, HOMA and FFA by sex, we observed that girls had significantly higher insulin concentrations than boys (except at the 10th percentile) and significantly higher FFA (except at the 90th percentile) with no significant differences between sexes for HOMA. Multivariate regression analyses showed that insulin was positively associated with glucose, triglycerides and apoB in boys but not in girls, and negatively associated with FFA in both genders. CONCLUSIONS: We report here data about the distribution of insulin in the Spanish prepubertal population. The higher levels of insulin in prepubertal girls could indicate that girls start to be more insulin resistant than boys at this age, although other manifestations of insulin resistance are not yet detectable.
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