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Mousavi Nasab SD, Baharlou R, Piroozmand A, Toghyani H, Shadmand E, Fazel H, Sadeghi K, Hashemi SMA, Shokouh MR, Gheshlaghi A, Ahmadi NA, Ahmadi Vasmehjani A. Distribution of IL-28B genotypes in patients with hepatitis C and healthy individuals in Jahrom city. Gastroenterol Hepatol Bed Bench 2015; 8:278-87. [PMID: 26468348 PMCID: PMC4600518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
AIM The purpose of this study was to compare the distribution of interleukin (IL)-28B genotypes between Iranian healthy individuals and patients with chronic hepatitis C based on the genotype. BACKGROUND Polymorphisms in the region of IL-28B gene have been identified as the strongest genetic pretreatment predictor of sustained virological response (SVR) in hepatitis C infection. PATIENTS AND METHODS In this study, 147 patients with chronic hepatitis C and 80 healthy individuals were included. The IL-28B rs12979860 and rs8099917 polymorphisms were genotyped by PCR-RFLP method and the frequency of IL-28B polymorphisms with respect to HCV genotypes was also determined. RESULTS The frequencies of rs12979860 TT, CC and CT genotypes in the chronic hepatitis C patients and healthy individuals were as follows: 10.8% vs. 11.3%, 38.7% vs. 46.2% and 50.3% vs. 42.5%. Also, the frequencies of rs8099917 TT, GG and GT genotypes in the chronic hepatitis C patients was 61.9%, 6.1% and 32% and in controls was 47.5%, 11.2% and 41.3%. The differences in the distribution of rs12979860 genotypes and alleles between HCV genotype 1 and HCV genotype 3a infected patients were statistically significant. CONCLUSION The rs12979860 C allele is the favorable allele for the spontaneous clearance of HCV. It seems that the impact of IL-28B polymorphism on the spontaneous clearance of HCV genotype 3 is more prominent than HCV genotype 1, which results in the observation of higher rs12979860 C allele frequency in chronic hepatitis C patients with HCV genotype 3 than HCV genotype 1.
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Affiliation(s)
| | - Rasoul Baharlou
- Department of Microbiology, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Ahmad Piroozmand
- Department of Microbiology, Faculty of Medicine, Kashan University of Medical Sciences, Kashan, Iran,Autoimmune Diseases Research Center, School of Medicine, Kashan University of Medical Sciences, Kashan, Iran
| | - Hadi Toghyani
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Hadi Fazel
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Kaveh Sadeghi
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | | | | | - Abulfazl Gheshlaghi
- Department of Microbiology, Jahrom University of Medical Sciences, Jahrom, Iran
| | - Nayeb Ali Ahmadi
- Proteomics Research Center, and Department of Medical Lab Technology, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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