Relationship between obesity, adipocytokines and inflammatory markers in type 2 diabetes: relevance for cardiovascular risk prevention

Int J Environ Res Public Health. 2014 Apr 14;11(4):4049-65. doi: 10.3390/ijerph110404049.

Abstract

This study aimed to analyse the impact of obesity in type 2 diabetes (T2D) on adipocytokines (adiponectin, leptin and resistin) and inflammatory markers (TNF-α, IL-6 and hsCRP) as cardiovascular risk factors. A cross-sectional study comparing the basal levels of adipocytokines and inflammatory markers was done in 18 obese (BMI ≥ 30 kg/m²) (group A), 21 overweight (25 kg/m² ≤ BMI < 30 kg/m²) (group B), 25 non-obese T2D patients (group C) and 15 non-obese controls (group D). The lowest levels of adiponectin and the highest levels of leptin, resistin, TNF-α, IL-6 and hsCRP were found in group A. Adiponectin levels were significantly lower, and resistin, TNF-α, and hsCRP levels were elevated in group C vs. D. However, leptin and IL-6 levels differed significantly between groups A and B, but not between groups C and D. Moreover, we found a significant negative correlation between adiponectin and TNF-α, but not with other markers, which was independent of the presence of obesity. In contrast, leptin and resistin correlated with the inflammatory markers, and this correlation was obesity-dependent. Our results suggest that obesity influences cardiovascular risk primarily through changes in leptin and resistin and less efficiently at the level of adiponectin.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adiponectin / blood
  • Adult
  • Aged
  • Biomarkers / blood
  • C-Reactive Protein / analysis
  • Cardiovascular Diseases / prevention & control*
  • Diabetes Mellitus, Type 2 / blood*
  • Female
  • Humans
  • Insulin / blood
  • Interleukin-6 / blood
  • Leptin / blood*
  • Male
  • Middle Aged
  • Obesity / blood*
  • Resistin / blood*
  • Risk Factors
  • Tumor Necrosis Factor-alpha / blood

Substances

  • ADIPOQ protein, human
  • Adiponectin
  • Biomarkers
  • IL6 protein, human
  • Insulin
  • Interleukin-6
  • Leptin
  • RETN protein, human
  • Resistin
  • Tumor Necrosis Factor-alpha
  • C-Reactive Protein