Abstract
Background/Aim: We studied the molecular pathogenesis of obesity, involving complex interactions between environmental and genetic factors, with a focus on the leptin gene. It was our aim to characterize the LEP -2548G>A leptin polymorphism and lipid profile in obese and normal-weight individuals. Methods: A total of 212 individuals were divided into the study group including 136 obese patients (body mass index, BMI ≥30) and the control group with 76 normal-weight individuals (BMI >18.5 and ≤24.9). DNA was amplified by polymerase chain reaction and restriction fragment length polymorphism. The lipid profile was analyzed by enzymatic colorimetric methods. The level of significance was set at p < 0.05. Results: There was a prevalence of the GA genotype in both groups. However, comparative group analysis showed an association of the recessive model (AA+GA) with increased triglycerides (TG) and decreased high-density lipoprotein cholesterol (HDL-C) levels in the study group. Conclusion: This study did not confirm an association between obesity and the LEP -2548G>A polymorphism. However, AA+GA genotypes, in the presence of obesity, seem to contribute to a reduction in HDL-C and an increase in TG compared with normal-weight individuals. This should be confirmed in further studies.
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