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Year : 2019  |  Volume : 23  |  Issue : 1  |  Page : 111-116

Polymorphic analysis of leptin promoter in obese/diabetic subjects in Kashmiri population

1 Department of Biotechnology, University of Kashmir, Hazratbal Srinagar, Srinagar, Jammu and Kashmir, India
2 Centre of Research for Development (CORD), University of Kashmir, Srinagar, Jammu and Kashmir, India
3 Department of Endocrinology, Sher-i-Kashmir Institute of Medical Sciences (SKIMS), Soura, Srinagar, Jammu and Kashmir, India
4 Department of Statistics, University of Kashmir, Hazratbal Srinagar, Srinagar, Jammu and Kashmir, India

Correspondence Address:
Khurshid Iqbal Andrabi
Department of Biotechnology, Science Block, University of Kashmir, Jammu and Kashmir - 190 006
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijem.IJEM_164_18

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Background: The role of common variants in leptin promoter has already been established to play a major role in obesity and diabetes in humans. The study was accordingly focused on leptin promoter variants and their potential association with diabetes and obesity in ethnic population from Kashmir, India. Methods: Allele frequencies of 620 Kashmiri subjects with diabetes (200), obese subjects (200), and ethnically matched healthy controls (200) were tested for the Hardy–Weinberg disequilibrium. Among 200 obese subjects, a total of 50 persons were with diabetes. The genotype and allele frequencies were evaluated using the Chi-square or Fisher's exact tests. Results: Sequence analysis revealed two reported variations i.e., rs72563764C>T and rs7799039G>A in promoter region. Both variants show homozygous as well as heterozygous genotypes. These variations indicated significant difference with respect to allelic and genotypic frequencies in all groups i.e., persons with diabetes, obese, and obese persons with diabetes (P < 0.05). We also analyzed the association of these variations with biochemical characteristics and found significant association of rs72563764C>T with triglycerides (TG) in obese patients and fasting plasma glucose (FPG) and random blood sugar (RBS) in obese/persons with diabetes. Also rs7799039G>A showed association with postprandial plasma sugar (PPPS) in obese patients and FPG and resting plasma glucose (RPG) in obese persons with diabetes. Conclusions: Our results are suggestive of the association of leptin promoter gene variations i.e., rs72563764C>T and rs7799039G>A with both diabetes and obesity.

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