Distribution of 22 Cytokine Gene Polymorphisms in Roma from the Republic of Macedonia

Dejan Trajkov; Aleksandar Petlichkovski; Olivija Efinska-Mladenovska; Slavica Hristomanova; Eli Djulejic; Meri Kirijas; Aleksandar Senev; Mirko Spiroski

Distribution of 22 Cytokine Gene Polymorphisms in Roma from the Republic of Macedonia

Dejan Trajkov

Aleksandar Petlichkovski

Olivija Efinska-Mladenovska

Abstract

The aim of this study was to analyze 22 cytokine polymorphisms in the Roma population from the Republic of Macedonia. The Roma population consists of 77 healthy unrelated individuals, residents of different geographical regions of the Republic of Macedonia (Skopje, Gostivar, and Kochani). Blood samples were collected after obtaining written consent. DNA was isolated from peripheral blood and 22 polymorphisms were typed: IL1A -889, IL1B -511, IL1B +3962, IL1R pst1 1970, IL1RN mspa11100, IL4RA +1902, IL12 -1188, IFNG utr5644, TGF-β1 cdn10, TGF-β1 cdn25, TNF-α -308, TNF-α -238, IL-2 -330, IL-2 +166, IL-4 -1098, IL-4 -590, IL-4 -33, IL-6 -174, IL-6 565, IL-10 -1082, IL-10 -819, and IL-10 -592. Cytokine genotyping was performed by PCR-SSP. The population genetics analysis package, PyPop, was used for analysis of the cytokine data. Fnd was negative and significantly different from 0 for IL-4 -590 (p of F=0.006), IL-10 -1082 (p of F=0.010), IFN utr5644 (p of F=0.024), IL-4 -1098 (p of F=0.026) and TGF-1 cdn25 (p of F=0.001) alleles, as well as for IL-2 haplotypes (p=0.025). Several SNPs (IL-12B -1188, IL-2 -330, IL-4 -1098, IL-4 -590, and IL-10 -1082) were not in HWP (p<0.05). A few SNPs (IL-12B -1188, IL-2 -330, IL-4 -1098, IL-4 -590, and IL-10 -1082) and several observed frequencies of cytokine diplotypes (IL-2/GG:TG, IL-2/TG:TG, IL-4/GCC:GCC, IL-4/TTC:TTC, IL-4/TTT:TTC, IL-10/GCC:GCC, IL-10/ATA:GCC, IL-10/ACC:GCC, and IL-10/ACC:ATA) were not in HWP and were significantly different from the expectations. Hardy Weinberg proportion could not be calculated for TNF genotypes and diplotypes because nearly all genotypes and diplotypes belong to GG genotype or GG:GG diplotype. The results of cytokine polymorphisms in Roma population can be used for characterization of the current genetic profile of the Gypsies, anthropological comparisons, as well as for the association studies with different diseases.

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Issue	Vol 11, No 4 (2012)
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Keywords
Cytokine DNA Genetic polymorphism

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Trajkov D, Petlichkovski A, Efinska-Mladenovska O, Hristomanova S, Djulejic E, Kirijas M, Senev A, Spiroski M. Distribution of 22 Cytokine Gene Polymorphisms in Roma from the Republic of Macedonia. Iran J Allergy Asthma Immunol. 1;11(4):282-293.

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