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Leptin/adiponectin ratio in overweight patients - gender differences
K Selthofer-Relatić1,2, R Radić3, A Stupin4
11 Department for Cardiovascular Disease, Osijek University Hospital, Osijek, Croatia.
Objective:
Obesity-related atherosclerosis is a systemic disease with a background connected to multiple metabolic-neurohumoral pathways. The leptin/adiponectin ratio has been suggested as an atherosclerotic marker in obese patients. The aim of this study was to assess (1) the significance of the L/A ratio in overweight subjects, (2) the relation with anthropometric/metabolic parameters and (3) gender difference.
Method:
The study included 80 adult males and females, overweight, non-diabetic patients. Biochemical blood analysis and anthropometric and cardiovascular measurements were performed. Serum leptin levels were measured with a radioimmunoassay test and total adiponectin levels with enzyme-linked immunosorbent assay. Leptin/adiponectin ratios were calculated as ratios between total serum concentrations of leptin and adiponectin.
Results:
Differences between leptin, adiponectin serum levels and leptin/adiponectin ratios are presented in overweight persons, where females have a significantly higher leptin/adiponectin ratio than men ( p < 0.001). In men, the leptin/adiponectin ratio showed a positive correlation with total cholesterol levels ( p = 0.011), low-density lipoprotein ( p = 0.013) and triglycerides ( p = 0.032). In females, the leptin/adiponectin ratio correlated with anthropometric parameters of visceral obesity: waist circumference ( p = 0.001) and waist-to-hip ratio ( p = 0.025).
Conclusion:
The leptin/adiponectin ratio could represent an atherosclerotic risk marker of the early stage of obesity. Gender plays a significant role in pathophysiological changes, with different clinical manifestations, where sex hormones have a crucial effect on neurohumoral adipose tissue activity.
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