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Lipopolysaccharide-binding protein plasma levels as a biomarker of obesity-related insulin resistance in adolescents

Korean Journal of Pediatrics, ISSN: 2092-7258, Vol: 59, Issue: 5, Page: 231-238
2016
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Article Description

Purpose: Lipopolysaccharide-binding protein (LBP) is a 65-kDa acute phase protein, derived from the liver, which is present in high concentrations in plasma. Data regarding the association between circulating plasma LBP levels and obesity-related biomarkers in the pediatric population are scarce. We aimed to determine whether there was a difference in plasma LBP levels between overweight/ obese and normal-weight adolescents and to assess the correlation of circulating LBP levels with anthropometric measures and obesity-related biomarkers, including insulin resistance, liver enzyme levels, and lipid profiles. Methods: The study included 87 adolescents aged 12–13 years; 44 were overweight/obese and 43 were of normal-weight. We assessed anthropometric and laboratory measures, including body mass index (BMI), blood pressure, insulin sensitivity, liver enzyme levels, and lipid profiles. Plasma LBP levels were measured using an enzyme-linked immunosorbent assay. Results: The mean age of the participants was 12.9±0.3 years. Circulating plasma LBP levels were significantly increased in overweight/obese participants compared with those in normal-weight participants (P<0.0001). LBP levels were significantly and positively associated with BMI; systolic and diastolic blood pressure; total cholesterol, low density lipoprotein-cholesterol, triglyceride, aspartate aminotransferase, and alanine aminotransferase levels; and insulin resistance as indicated by the homeostasis model assessment of insulin resistance (HOMA-IR) (all P<0.05). In multivariate linear regression analysis, BMI and HOMA-IR were independently and positively associated with plasma LBP levels. Conclusion: LBP is an inflammatory biomarker associated with BMI and obesity-related insulin resistance in adolescents. The positive correlation between these parameters suggests a potentially relevant pathophysiological mechanism linking LBP to obesity-related insulin resistance in adolescents.

Bibliographic Details

Kim, Ki Eun; Cho, Young Sun; Baek, Kyung Suk; Li, Lan; Baek, Kwang-Hyun; Kim, Jung Hyun; Kim, Ho-Seong; Sheen, Youn Ho

Korean Pediatric Society

Medicine; Nursing

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