Journal
JOURNAL OF BIOSCIENCES
Volume 40, Issue 3, Pages 521-530Publisher
INDIAN ACAD SCIENCES
DOI: 10.1007/s12038-015-9536-2
Keywords
BMI; LEP G-2548A; obesity; Pakistan; polymorphism
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Funding
- Higher Education Commission of Pakistan
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Leptin is involved in the regulation of food intake and energy expenditure, and therefore, is central to adiposity-sensing pathway. We examined the relationship of the leptin G-2548A polymorphism with obesity and obesity-related 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 (a parts per thousand currency sign18 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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