Abstract
Adiponectin, an adipocyte-derived protein, seems to be a link between obesity, insulin resistance, and atherosclerosis. The present study investigated the association between adiponectin and coronary artery disease in middle-aged men. Material and methods: We examined 48 men (aged 40–60) with angiographically confirmed coronary atherosclerosis and 19 healthy men, matched by age, as a control group. Concentrations of glucose and lipids were estimated with enzymatic methods. Plasma level of adiponectin, total and free testosterone, estradiol, estrone, DHEA-S, and insulin were estimated with RIA commercial kits. Results: Men with coronary atherosclerosis had lower plasma adiponectin level than controls (16.2±9.2 vs 20.5±6.7 µg/mL; p<0.05). However, after including BMI and waist as covariate data in ANCOVA, the difference in adiponectin levels between men with CAD and controls lost statistical significance (respectively for BMI and waist: p=0.4 and p=0.7). Moreover, although not significant, adiponectin levels decreased as a function of the number of significantly narrowed coronary arteries. In a priori comparison the lowest adiponectin plasma concentration was in men with three-vessel coronary artery disease (14.3±9.8 µg/mL) and the highest in controls (20.5±6.8 µg/mL; p=0.09). Adiponectin plasma level correlated negatively (p<0.05) with BMI, waist, percentage of total fat, fasting-insulin-resistance index (FIRI), total cholesterol and triglycerides, and positively with quantitative insulin sensitivity check index (QUICKI), HDL cholesterol, total testosterone, and total testosterone/estradiol ratio. Conclusions: Our data suggest that low plasma adiponectin level is connected with insulin resistance syndrome and atherogenic lipid profile. It seems that adiponectin plays a role in pathogenesis of coronary atherosclerosis, especially in obese and insulin-resistant subjects.
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Dunajska, K., Milewicz, A., Jcedrzejuk, D. et al. Plasma adiponectin concentration in relation to severity of coronary atherosclerosis and cardiovascular risk factors in middle-aged men. Endocr 25, 215–221 (2004). https://doi.org/10.1385/ENDO:25:3:215
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DOI: https://doi.org/10.1385/ENDO:25:3:215