European Journal of Pediatrics

, Volume 169, Issue 8, pp 965–970 | Cite as

Increased plasma isoprostane is associated with visceral fat, high molecular weight adiponectin, and metabolic complications in obese children

  • Shunsuke Araki
  • Kazushige Dobashi
  • Yukiyo Yamamoto
  • Kohtaro Asayama
  • Koichi Kusuhara
Original Paper

Abstract

Oxidative stress is considered to be increased in obese subjects. However, the association of oxidative stress with visceral adiposity and adiponectin level is not fully understood in children. Forty-four obese Japanese children and adolescents, 28 boys and 16 girls, with median age of 9.9 years [5.2–13.8 years], and the 28 age-matched non-obese healthy controls, 15 boys and 13 girls, were enrolled in this study. The median BMI Z scores were +2.21 [1.31–4.38] for the obese subjects and −0.72 [−2.11–1.31] for the control. Plasma concentrations of 8-epi-prostaglandin \( {{\hbox{F}}_{2\alpha }} \) (isoprostane), a marker of oxidative stress, and adiponectin fractions were assayed using ELISA. 8-epi-PGF\( _{2\alpha } \) levels were significantly higher in the obese group (37.1 [4.7–112.7], median and the range) than in the control (11.5 [4.5–27.3]). In a univariate analysis, concentrations of 8-epi-PGF\( _{2\alpha } \) positively correlated with visceral adipose tissue area measured by computed tomography, waist circumference, serum triglycerides, alanine aminotransferase, insulin levels, and the homeostasis of minimal assessment of insulin resistance and inversely correlated with high-density-lipoprotein cholesterol and high-molecular weight (HMW) adiponectin. Total-, medium-, or low-molecular weight adiponectin fraction did not show a significant correlation with 8-epi-PGF\( _{2\alpha } \). Forty of 44 obese children had one or more metabolic complications. The 8-epi-PGF\( _{2\alpha } \) levels also elevated with increasing numbers of obesity-related complications. These results suggest that oxidative stress is enhanced in relation to visceral fat accumulation and decreasing HMW adiponectin level in childhood obesity. Oxidative stress may be associated with the development of obesity-related complications.

Keywords

Oxidative stress 8-epi-prostanglandin-F Adiponectin Visceral adipose tissue Metabolic syndrome Insulin resistance Children and adolescents 

Abbreviations

PG

Prostaglandin

HOMA-R

Homeostasis of minimal assessment of insulin resistance

MS

Metabolic syndrome

HMW

High molecular weight

MMW

Medium molecular weight

LMW

Low molecular weight

BMI

Body mass index

VAT

Visceral adipose tissue area

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Shunsuke Araki
    • 1
  • Kazushige Dobashi
    • 2
  • Yukiyo Yamamoto
    • 1
  • Kohtaro Asayama
    • 3
  • Koichi Kusuhara
    • 1
  1. 1.Department of Pediatrics, School of MedicineUniversity of Occupational and Environmental HealthKitakyushuJapan
  2. 2.Department of PediatricsShowa University School of MedicineTokyoJapan
  3. 3.Faculty of health NutritionTOKYO KASEI-GAKUIN UniversityTokyoJapan

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