Adiponectin correlates with body mass index and to a lesser extent with left ventricular mass in dialysis patients
Abstract
Background: Adiponectin is a serum protein produced by adipose tissue which exerts anti-inflammatory, anti-diabetic and anti-atherosclerotic properties, hence is considered a cardio-protective marker. With the current uncertain role of adiponectin in dialysis patients to the aim of this study was to investigate its relationship with left ventricular (LV) structure and function in these patients.
Methods: This study included 89 (age 56 ± 13 years, 43% male) patients treated with regular dialysis for > 6 months, and 55 control subjects with normal renal function. A complete two-dimensional, M-mode and tissue-Doppler echocardiographic study, and biochemical blood analyses, adiponectin and anthropometric parameters were obtainedon the same day.
Results: Dialysis patients had lower body mass index (BMI) and lower body surface area (BSA) (p < 0.001 for both), lower waist/hips ratio (p = 0.005), higher LV mass index (LVMI, p < 0.001), higher adiponectin level (p < 0.001) and LV end-systolic volume (p = 0.003), lower LV ejection fraction (p = 0.006), longer isovolumic relaxation time (p < 0.001), lower mean LV strain (p = 0.002), larger left atrium volume (p = 0.022) and lower left atrium emptying fraction (p = 0.026), compared to controls. In dialysis patients, adiponectin correlated with waist circumference (r = –0.427, p < 0.001), BMI (r = –0.403, p < 0.001) and BSA (r = –0.480, p < 0.001), and to a lesser extent with LVMI (r = 0.296, p = 0.005), waist/hips ratio (r = –0.222, p = 0.037) and total cholesterol (r = –0.292, p = 0.013). But in controls, it correlated only modestly with age (r = 0.304, p = 0.024), hemoglobin (r = 0.371, p = 0.005), high density lipoprotein cholesterol (r = 0.315, p = 0.019) and LVMI (r = 0.277, p = 0.043).
Conclusions: It seems that in dialysis patients, adiponectin modest correlation with anthropometric measurements suggests an ongoing catabolic process rather than a change in ventricular function.
Keywords: adiponectindialysisleft ventricular massbody mass index
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