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Variants in Intron 4 of PD-1 Gene are Associated with the Susceptibility to SLE in an Iranian Population | ||
Iranian Journal of Immunology | ||
دوره 17، شماره 3، آذر 2020، صفحه 204-214 اصل مقاله (602.44 K) | ||
نوع مقاله: Original Article | ||
شناسه دیجیتال (DOI): 10.22034/iji.2020.83046.1610 | ||
نویسندگان | ||
Yousef Khanjari1؛ Morteza Oladnabi2؛ Nafiseh Abdollahi3؛ Ahmad Heidari4؛ Saeed Mohammadi5؛ Alijan Tabarraei* 6 | ||
1Department of Microbiology, School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran. | ||
2Ischemic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran. | ||
3Golestan Rheumatology Research Center, Golestan University of Medical Sciences, Gorgan, Iran. | ||
4Department of Research and Technology, Golestan University of Medical Sciences, Gorgan, Iran. | ||
5Stem Cell Research Center, Golestan University of Medical Sciences, Gorgan, Iran | ||
6Infectious Diseases Research Center, Golestan University of Medical Sciences, Gorgan, IR Iran. | ||
چکیده | ||
Background: Programmed cell death protein 1 (PD-1) is a negative costimulatory molecule with immunomodulatory properties. Recently, PD-1 gene defects have attracted attention in the pathogenesis of SLE. Objective: Here, we assessed the association of PD-1 gene polymorphisms in intron 4 and haplotypes with the susceptibility to SLE. Method: Seventy-six SLE patients and 159 healthy controls were included. We screened the polymorphisms by amplifying the intron 4 of the PD-1 gene with the specific primers followed by sequencing. Results: Two distinct SNPs were identified (rs6705653 and rs41386439) within the intron 4 of the PD-1 gene. The AA genotype of +7499 (G/A) SNP was associated with the higher risk of SLE [OR=3.31, 95% CI (1.25-8.76), p-value=0.045], while A allele was identified as a risk allele [OR=1.75, 95% CI (1.10-2.76), p-value=0.015]. However, no significant association was observed between the allele and the genotype frequencies of +7209 (C/T) polymorphic region of the PD-1 gene and susceptibility to SLE. Haplotype analysis showed the significantly higher presence of H2 haplotype (AC; +7499/+7209) [OR=1.70, 95% CI (1.24-2.33), p-value=0.0012] in SLE patients. Conclusion: To the best of our knowledge, this is the first report of the significant association of PD-1 +7499 (G/A) SNP with the SLE susceptibility and the first detection of both polymorphic loci in a population from Iran. However, more investigations are necessary to confirm these findings. | ||
کلیدواژهها | ||
Intron 4؛ Iran؛ PDCD1؛ Polymorphism؛ Systemic Lupus Erythematosus | ||
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