c-LDL/ApoB-100 en niños obesos resistentes a la insulina como herramienta clínica para valorar el riesgo cardiovascular

Abstract

Obesity is the most common( nutritional disease in children and adolescents in developed countries. It is a proinfammatory disease that implies a break in the transduction signal of insulin with subsequent insulin resistance. The aim of the study was to assess the presence of particles of small and dense c-LDL by calculating the c-LDL/ApoB-100 index in an insulin resistant obese children population. Children of both sexes aged between 2 and 12 attending the pediatric outpatient clinics of Hospital Universitario Virgen Macarena were included. It recruited a cohort of 200 children, with a total of 103 girls and 97 boys distributed in the following groups: Group 1: n=96 obese (P97) and IR and n=104 normal weight, Group 2 (P<80). BMI percentile for age and sex as well as lipid and biochemical profle were calculated. Both groups had informed consent from relatives before the extraction. The c-LDL/ApoB-100 achieved greater statistical significance and area under the curve (AUC) than other ratios measured with sensibil-ity (S)=87 and specificity (E)=0.585 for the value of 1.3 with an AUC of 0.78 and p<0.001. Besides, a negative correlation between the c-LDL/Apo-B-100 and HOMA (p<0.05), fbrinogen (p<0.05) and us-PCR (p<0.05) ratios is obtained. The LDL/ApoB-100 ratio is a determining parameter for presence of small and dense LDL particles with high sensitivity, statistical significance and positive predictive value in an insulin resistant obese children population as a clinical tool to assess cardiovascular risk.