• Saqib Mahmood

      Articles written in Journal of Biosciences

    • Role of leptin G-2548A polymorphism in age- and gender-specific development of obesity

      Adeela Shahid Sobia Rana Saqib Mahmood Shahid Saeed

      More Details Abstract Fulltext PDF

      Leptin is involved in the regulation of food intake and energy expenditure, and therefore, is central to adipositysensing pathway. We examined the relationship of the leptin G-2548A polymorphism with obesity and obesityrelated anthropometric and metabolic parameters in a total of 394 (239 obese and 155 non-obese) subjects between 5 and 45 years of age. Body weight, height, waist circumference (WC), hip circumference (HC) and blood pressure (BP) were measured. Body mass index (BMI) and waist-to-hip ratio (WHR) were calculated. Levels of fasting blood glucose (FBG), insulin, leptin and leptin receptor were determined, and homeostasis model assessment of insulin resistance (HOMA-IR) was calculated. Genotyping was carried out by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). The LEP G-2548A polymorphism showed association with obesity in children and adolescents (≤18 years of age) but not in adults. However, analysis by gender stratification revealed association with obesity in girls only. In addition, G-2548A polymorphism showed association with BMI, WC, HC, fasting blood glucose and serum leptin levels. This suggests that G-2548A polymorphism may influence the susceptibility to metabolic disturbances and obesity at an early life. Further investigation with a larger sample size is required to validate the effect of LEP G-2548A polymorphism in obese Pakistani girls.

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