ABSTRACT
Objective: to determine the frequencies of adiponectin [ADIPOQ] C-11377G, tumor necrosis factor-alpha [TNF-alpha] G-308A and TNF-alpha G-238A single nucleotide polymorphisms [SNP] and their association with serum levels in Pakistani T2DM and healthy population
Study Design: Case control study
Place and Duration of Study: Military Hospital, Rawalpindi, Army Medical College and Institute of Biomedical and Genetic Engineering, Islamabad, Pakistan, from June 2012 till 2014
Methodology: cases [n=539] and controls [n=250] comprising of T2DM and healthy subjects, respectively, belonging to Pakistani Punjabi Rajput ethnicity were genotyped for SNPs. Serum adiponectin, TNF-alpha, insulin, blood sugar fasting [BSF], lipid profile, body mass index [BMI], and insulin resistance [IR] was determined and correlated with genotypes
Results: serum TNF-alpha was significantly higher and adiponectin was lower in T2DM than healthy controls [p < 0.003 and 0.0001, respectively, Mann-Whitney U-test]. The frequency of ADIPOQ CC, GC and GG was 340 [63.1%], 167 [31%] and 32 [5.9%] in T2DM patients. ADIPOQ -11377 SNP was not significantly associated with T2DM [OR = 1.116 [95% CI 0.81- 1.53], p = 0.27- Fisher's exact test]. Genotypes deviated from Hardy-Weinberg equilibrium. Minor alleles of TNF-alpha G-308A and TNF-alpha G-238A were not found in either groups
Conclusion: frequency of ADIPOQ -11377 risk allele is low and does not functionally affect the serum adiponectin levels; hence, ADIPOQ C-11377G SNP is not a risk factor for T2DM in Pakistani Punjabi Rajput patients. Moreover, TNF-alpha G-308A and TNF-alpha G-238A SNPs are not prevalent in this ethnic group