Reciprocal association between visceral obesity and adiponectin: in healthy premenopausal women.
BACKGROUND
Obesity is one of the well-known risk factors of vascular disorders; however, the molecular mechanisms underlying the association between the two remain undetermined. Previous studies have demonstrated that the plasma levels of adiponectin, an adipose-derived hormone, are reduced in obese subjects, and that this hypoadiponectinemia is associated with ischemic heart disease. In this study, we sought to identify the primary determinants of plasma adiponectin levels in healthy premenopausal women.


RESULTS
We analyzed the plasma adiponectin concentrations in age-matched healthy obese premenopausal women [n=37, body mass index (BMI)> or= 25 kg/m(2)] and in healthy nonobese premenopausal women (n = 23, BMI < 25 kg/m(2)). Visceral and subcutaneous fat (VCF and SCF) areas were determined by abdominal computed tomography (CT) scan. Plasma levels of adiponectin in obese subjects were lower than in nonobese subjects (3.24 +/- 1.08 vs. 4.90 +/- 2.06 ug/ml, P < 0.01). Significant, univariate inverse correlations were observed between adiponectin levels and visceral fat areas (r = -0.643, p < 0.001), subcutaneous fat areas (r = -0.407, p < 0.01), and hsCRP (r = -0.36, p = 0.007). Plasma levels of adiponectin correlated positively with insulin sensitivity [quantitative insulin sensitivity check index (QUICKI): r = 0.38, p = 0.005] and high-density lipoprotein (HDL) cholesterol (r = 0.44, p = 0.001), and negatively with low-density lipoprotein (LDL) cholesterol (r = -0.29, p = 0.028), triglyceride (r = -0.33, p = 0.013), and BMI (r = -0.48, p < 0.001). By multivariate analysis, only visceral fat areas affected adiponectin plasma levels (beta = -0.016, p < 0.05, R(2) = 0.504). Plasma levels of HDL cholesterol remained significantly correlated to plasma adiponectin concentrations in multivariate analysis (beta = 0.067, p < 0.05).


CONCLUSIONS
These results collectively indicate that plasma HDL cholesterol levels and visceral fat masses are independently associated with plasma adiponectin concentrations.
Kwon
Kihwan
K
Department of Internal Medicine, Ewha Womans University College of Medicine, Seoul, South Korea. kankadin@ewha.ac.kr
Jung
Sang Hyuk
SH
Choi
Chulhee
C
Park
Si-Hoon
SH
D052242:Adiponectin; D000273:Adipose Tissue; D000328:Adult; D015415:Biomarkers / Q000097:blood; D015992:Body Mass Index; D008076:Cholesterol, HDL / Q000097:blood; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D036341:Intercellular Signaling Peptides and Proteins / Q000097:blood*; D017202:Myocardial Ischemia / Q000209:etiology; D009765:Obesity / Q000097:blood* / Q000150:complications; D017697:Premenopause / Q000502:physiology*; D012016:Reference Values; D012307:Risk Factors; D014781:Viscera
D052242:Adiponectin; D015415:Biomarkers; D008076:Cholesterol, HDL; D036341:Intercellular Signaling Peptides and Proteins