Use of markers of dyslipidemia to identify overweight youth with insulin resistance

Tamara S. Hannon, Fida Bacha, So Jung Lee, Janine Janosky, Silva A. Arslanian

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

Context: Markers to identify overweight youth with insulin resistance are of clinical importance. Objective: To determine if markers of dyslipidemia could identify overweight adolescents with insulin resistance. Setting, Participants, and Study Design: We retrospectively examined the association between markers of dyslipidemia and insulin resistance in 35 overweight [body mass index (BMI) of ≥95th percentile], white adolescents [mean age 13.5 ± (SD) 1.6 yr] who had participated in hyperinsulinemic-euglycemic clamp studies to evaluate insulin action. Total body fat was measured by dual-energy X-ray absorptiometry and abdominal fat with computed tomography. Using receiver-operating curves, cut-points for triglyceride (TG)/high-density lipoprotein (HDL) and TG level to identify overweight individuals in the lowest tertile for insulin sensitivity were determined. Main Outcome Measure: Difference in the values for insulin sensitivity among the groups. Results: Of the markers examined (TG, TG/HDL, adiponectin, measures of adiposity and fasting insulin), fasting insulin was the strongest correlate of insulin sensitivity (r = 0.87, p < 0.001). Youth with TG/HDL level ≥3 had lower insulin sensitivity (50% lower median values, p < 0.01) and higher visceral fat (p < 0.05) despite BMI comparable to that of youth with TG/HDL level <3. Youth with TG/HDL ≥3 had a sensitivity of 61% and specificity of 82% for identifying participants with the greatest degree of insulin resistance. Conclusions: TG and TG/HDL are easily obtained markers associated with insulin resistance. Further research is needed to determine if a constellation of clinical findings, such as components of the metabolic syndrome along with other metabolic markers including adiponectin, better predicts insulin resistance in overweight youth.

Original languageEnglish (US)
Pages (from-to)260-266
Number of pages7
JournalPediatric Diabetes
Volume7
Issue number5
DOIs
StatePublished - Oct 1 2006
Externally publishedYes

Keywords

  • Euglycemic clamp
  • High-density lipoprotein cholesterol
  • Hyperinsulinemic
  • Insulin sensitivity
  • Obesity
  • Triglycerides

ASJC Scopus subject areas

  • Internal Medicine
  • Pediatrics, Perinatology, and Child Health
  • Endocrinology, Diabetes and Metabolism

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