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Insulin resistance in obese children and adolescents / Resistência à insulina em crianças e adolescentes obesos
Romualdo, Monica Cristina dos Santos; Nóbrega, Fernando José de; Escrivão, Maria Arlete Meil Schimith.
  • Romualdo, Monica Cristina dos Santos; Universidade Federal de São Paulo. Escola Paulista de Medicina. São Paulo. BR
  • Nóbrega, Fernando José de; Universidade Federal de São Paulo. Escola Paulista de Medicina. São Paulo. BR
  • Escrivão, Maria Arlete Meil Schimith; Universidade Federal de São Paulo. Escola Paulista de Medicina. São Paulo. BR
J. pediatr. (Rio J.) ; 90(6): 600-607, Nov-Dec/2014. tab, graf
Article in English | LILACS | ID: lil-729837
ABSTRACT

OBJECTIVE:

To evaluate the presence of insulin resistance and its association with other metabolic abnormalities in obese children and adolescents.

METHODS:

Retrospective study of 220 children and adolescents aged 5-14 years. Anthropometric measurements were performed (weight, height, and waist circumference) and clinical (gender, age, pubertal stage, and degree of obesity) and biochemical (glucose, insulin, total cholesterol, and fractions, triglycerides) data were analyzed. Insulin resistance was identified by the homeostasis model assessment for insulin resistance (HOMA-IR) index. The analysis of the differences between the variables of interest and the HOMA-IR quartiles was performed by ANOVA or Kruskal-Wallis tests.

RESULTS:

Insulin resistance was diagnosed in 33.20% of the sample. It was associated with low levels of high-density lipoprotein cholesterol (HDL-C; p = 0.044), waist circumference measurement (p = 0.030), and the set of clinical and metabolic (p = 0.000) alterations. Insulin-resistant individuals had higher mean age (p = 0.000), body mass index (BMI; p = 0.000), abdominal circumference (p = 0.000), median triglycerides (p = 0.001), total cholesterol (p ≤ 0.042), and low-density lipoprotein cholesterol (LDL-C; p ≤ 0.027); and lower HDL-C levels (p = 0.005). There was an increase in mean BMI (p = 0.000), abdominal circumference (p = 0.000), and median triglycerides (p = 0.002) as the values of HOMA -IR increased, with the exception of HDL-C, which decreased (p = 0.001). Those with the highest number of simultaneous alterations were between the second and third quartiles of the HOMA-IR index (p = 0.000).

CONCLUSION:

The results confirmed that insulin resistance is present in many obese children and adolescents, and that this condition is associated with alterations that represent an increased risk for developing metabolic disorders in adulthood. .
RESUMO

OBJETIVO:

Avaliar a presença de resistência à insulina e sua relação com outras alterações metabólicas, em crianças e adolescentes obesos.

MÉTODOS:

Estudo retrospectivo de 220 crianças e adolescentes de 5 a 14 anos. Foram realizadas avaliações antropométricas (peso, estatura e circunferência abdominal), clínicas (sexo, idade, estágio puberal e grau de obesidade) e bioquímicas (glicemia, insulina, colesterol total e frações, triglicerídeos). A resistência à insulina foi identificada pelo índice HOMA-IR. A análise das diferenças entre as variáveis de interesse e os quartis do HOMA-IR foi realizada pelos testes ANOVA ou Kruskal-Wallis.

RESULTADOS:

A resistência à insulina foi diagnosticada em 33,20% da amostra. Associou-se a níveis baixos de HDL-C (p = 0,044), medida da circunferência abdominal aumentada (p = 0,030) e ao conjunto de alterações clínicas e metabólicas (p = 0,000). Os indivíduos resistentes apresentaram maiores médias de idade (p = 0,000), IMC (p = 0,000), medida da circunferência abdominal (p = 0,000) e maiores medianas de triglicerídeos (p = 0,001), colesterol total (p ≤ 0,042), LDL-C (p ≤ 0,027) e menores de HDL-C (p = 0,005). Houve aumento das médias de IMC (p = 0,000), medida da circunferência abdominal (p = 0,000) e mediana de triglicerídeos (p = 0,002) à medida que os valores do HOMA-IR se elevavam, com exceção dos níveis de HDL-C que diminuíram (p = 0,001). Aqueles que apresentaram o maior conjunto de alterações simultâneas estavam entre o segundo e terceiro quartis do HOMA-IR (p = 0,000).

CONCLUSÃO:

Os resultados confirmaram que a resistência à insulina está presente em muitas crianças e em muitos adolescentes obesos, e ...
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Insulin Resistance / Metabolic Syndrome / Obesity Type of study: Etiology study / Observational study / Prevalence study / Prognostic study / Risk factors Limits: Adolescent / Child / Child, preschool / Female / Humans / Male Country/Region as subject: South America / Brazil Language: English Journal: J. pediatr. (Rio J.) Journal subject: Pediatrics Year: 2014 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal de São Paulo/BR

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Full text: Available Index: LILACS (Americas) Main subject: Insulin Resistance / Metabolic Syndrome / Obesity Type of study: Etiology study / Observational study / Prevalence study / Prognostic study / Risk factors Limits: Adolescent / Child / Child, preschool / Female / Humans / Male Country/Region as subject: South America / Brazil Language: English Journal: J. pediatr. (Rio J.) Journal subject: Pediatrics Year: 2014 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal de São Paulo/BR