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Kafeero HM, Ndagire D, Ocama P, Walusansa A, Sendagire H. Tumor Necrosis Factor-α-863C/A and 1031 T/C Single nucleotide polymorphic sites (SNPs) may be putative markers of HBV disease prognosis among Caucasoids: Evidence from a systematic review with meta-analysis. GENE REPORTS 2022. [DOI: 10.1016/j.genrep.2021.101486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Association of IL-12 and TNF-α Polymorphisms with Graft-Versus-Host Disease in Allogeneic Hematopoietic Stem Cell Transplant Recipients. Int J Organ Transplant Med 2019; 10:37-45. [PMID: 30891168 PMCID: PMC6417000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
BACKGROUND Cytokines are important factors determining the outcome of transplantation. The host ability in cytokine production may be affected by cytokine genes polymorphisms. OBJECTIVE To investigate the effect of IL-12 and TNF-α gene polymorphisms on outcome of hematopoietic stem cell transplantation. METHODS 90 bone marrow transplant recipients were included in this study. 30 (33%) of 90 recipients experienced graft-versus-host disease (GVHD). IL-12 and TNF-α gene polymorphisms were evaluated by PCR-RFLP and ARMS-PCR method, respectively. RESULTS No significant difference in the distribution of IL-12 (rs3212227 +1188 A/C) and TNF-α (rs 1800629 -308 G/A) genotypes and alleles was observed between those with and without GVHD. There was no significant association between the distribution of genotypes and the recipient sex. CONCLUSION IL-12 (rs3212227 +1188 A/C) and TNF-α (rs 1800629-308 G/A) genotypes and alleles were not risk factors for development of GVHD.
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Association of TNF-Alpha gene polymorphisms and susceptibility to hepatitis B virus infection in Egyptians. Hum Immunol 2017; 78:739-746. [PMID: 29054398 DOI: 10.1016/j.humimm.2017.10.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 09/25/2017] [Accepted: 10/16/2017] [Indexed: 12/15/2022]
Abstract
Tumor necrosis factor alpha (TNF-α) is one of the important cytokine in generating an immune response against hepatitis B virus (HBV). Genetic polymorphisms might influence gene transcription, leading to disturbance in cytokine production. We hypothesized that single nucleotide polymorphism (SNPs) in TNF-α gene could affect the pathogenesis of HBV. To test this hypothesis, we investigated the role of TNF-α polymorphism [-863C/A (rs1800630), -308G/A (rs1800629), -376G/A (rs1800750), -857C/T (rs1799724) and +489G/A (rs1800610)] in the susceptibility to chronic hepatitis B (CHB) infection. Polymorphisms of the TNF-α (-863C/A (rs1800630), -308G/A) were analyzed by Polymerase chain reaction sequence specific primer (PCR-SSP) while TNF-α (-376G/A, -857C/T and +489G/A) by PCR-restriction fragment length polymorphism (PCR-RFLP) in 104 patients with CHB and 104 healthy controls. The plasma level of TNF-α was measured using Enzyme-linked immunosorbent assay (ELISA). The study showed a significant increase in the frequency of -863CC, -376GA, -857CC, -857TT and +489GA genotypes and -863C, -376A, -857C, and +489A alleles in CHB patients compared to controls. In addition, CAGCG haplotype had a highest frequency in CHB patients. A strong Linkage Disequilibrium (LD) between TNF-α -863C/A (rs1800630) and -376G/A (D' = 0.7888, r2 = 0.0200); -308G/A and -857C/T (D' = 0.9213, r2 = 0.1770); -308G/A and +489G/A (D' = 0.9088, r2 = 0.1576) was demonstrated. CHB patients had significantly lower levels of TNF-α compared to controls. In conclusion, our preliminary results suggest that -863C/A (rs1800630), -308G/A, -376G/A, and +489G/A of the TNF-α gene may play a role in HBV susceptibility in Egyptians. The significant reduction in TNF-α in CHB patient was independent of any particular genotype/haplotype in TNF-α.
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Heidari Z, Moudi B, Mahmoudzadeh Sagheb H, Moudi M. Association of TNF-α Gene Polymorphisms with Production of Protein and Susceptibility to Chronic Hepatitis B Infection in the South East Iranian Population. HEPATITIS MONTHLY 2016; 16:e41984. [PMID: 28070201 PMCID: PMC5203729 DOI: 10.5812/hepatmon.41984] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 10/01/2016] [Accepted: 10/17/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND The host genetic background regulates the natural history of chronic hepatitis B virus (HBV) infection. OBJECTIVES The aim of this study was to investigate the association between TNF-α gene polymorphism in the promoter region and susceptibility to chronic hepatitis B virus infection. METHODS Four polymorphisms of TNF-α gene including -238 A/G, -308 A/G, -857 C/T, and -863 A/C were analyzed by PCR-RFLP in 100 chronic HBV infected patients (HBV group), 40 spontaneously recovered HBV subjects (SR group), and 100 healthy controls (C group). Also, serum levels of protein were monitored. RESULTS The study showed that the existence of -308 G, -857 C, and -863 A alleles significantly increased susceptibility to chronic HBV infection. In addition, GGCA haplotype had a higher frequency in HBV patients than C and SR groups that might be related to the natural history of the infection. Chronic HBV patients with -308 GG, -857 CC, and -863 AA genotypes had lower serum levels of TNF-α compared to those with other genotypes. CONCLUSIONS The results indicated that there was a positive association between susceptibility to chronic HBV infection and TNF-α polymorphism. In addition, HBV patients carrying -308 GG, -857 CC, and -863 AA genotypes with lower serum levels of TNF-α had an increased risk of infection.
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Affiliation(s)
- Zahra Heidari
- Infectious Diseases and Tropical Medicine Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
- Department of Histology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Bita Moudi
- Infectious Diseases and Tropical Medicine Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
- Department of Histology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
- Corresponding Author: Bita Moudi, Department of Histology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran. Tel: +98-5433295794, Fax: +98-5433295794, E-mail:
| | - Hamidreza Mahmoudzadeh Sagheb
- Infectious Diseases and Tropical Medicine Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
- Department of Histology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mehrnoosh Moudi
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Moudi B, Heidari Z, Mahmoudzadeh-Sagheb H. Impact of host gene polymorphisms on susceptibility to chronic hepatitis B virus infection. INFECTION GENETICS AND EVOLUTION 2016; 44:94-105. [DOI: 10.1016/j.meegid.2016.06.043] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 06/21/2016] [Accepted: 06/22/2016] [Indexed: 12/15/2022]
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Ferreira SDC, Chachá SGF, Souza FF, Teixeira AC, Santana RDC, Deghaide NHS, Rodrigues S, Marano LA, Mendes-Junior CT, Zucoloto S, Donadi EA, Martinelli ADLC. IL-18, TNF, and IFN-γ alleles and genotypes are associated with susceptibility to chronic hepatitis B infection and severity of liver injury. J Med Virol 2015; 87:1689-96. [PMID: 25952099 DOI: 10.1002/jmv.24225] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/22/2015] [Indexed: 12/31/2022]
Abstract
This study evaluated the association of polymorphisms in the IL-18 (-607C/A and -137C/G), IFNγ (+874 A/T), and TNF (-238 A/G and -308 A/G) genes with susceptibility to HBV infection and severity of liver injury. A total of 259 chronic HBV-infected patients followed at the University Hospital, Faculty of Medicine of Ribeirão Preto, São Paulo, Brazil, and 202 healthy individuals were studied. Four Single Nucleotide Polymorphisms (SNPs) were amplified by Polymerase Chain Reaction (PCR). Liver biopsy was performed in 212 HBV-infected patients and classified according to severity of liver fibrosis (scores 0-4) and necroinflammatory activity (HAI scores 0-18). TNF-308*A allele (P < 0.001; OR = 2.16) and TNF -308 AA genotype (P = 0.026; OR = 5.43) were associated with susceptibility to HBV infection. An association was found between severe liver fibrosis when compared to mild fibrosis and the following polymorphisms: Alleles IL-18 -137*G (P = 0.004; OR = 3.45), TNF -308*A (P < 0.001; OR = 3.39), and IFNγ +874*T (P = 0.029; OR = 1.85) and IL-18 -137 GG genotype (P = 0.009; OR = 3.70). No significant association was found between IL-18 (-607 A/C) polymorphism and severity of liver fibrosis. Alleles IL-18 -137*G (P = 0.028; OR = 2.64) and TNF-308*A (P = 0.002; OR = 3.06) and IL-18 -137 GG genotype (P = 0.011; OR = 4.20) were associated with severe necroinflammatory activity (HAI>12) when compared to mild necroinflammatory activity (HAI 1-8). The results suggest that IL-18 -137C/G, TNF-308 G/A and IFNγ +874 A/T SNPs were associated to more severe liver injury in chronic HBV infection. TNF -308*A allele and TNF -308 AA genotype could play a role in the susceptibility to HBV infection.
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Affiliation(s)
- Sandro da Costa Ferreira
- Gastroenterology Division, Department of Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
| | - Silvana Gama Florêncio Chachá
- Gastroenterology Division, Department of Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil.,Department of Medicine, Federal University of São Carlos (UFSCAR), Ribeirão Preto, São Paulo, Brazil
| | - Fernanda Fernandes Souza
- Gastroenterology Division, Department of Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
| | - Andreza Corrêa Teixeira
- Gastroenterology Division, Department of Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
| | - Rodrigo de Carvalho Santana
- Infectious Diseases Division, Department of Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
| | - Neifi Hassan Saloun Deghaide
- Clinical Immunology Division, Department of Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
| | - Sandra Rodrigues
- Gastroenterology Division, Department of Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
| | - Leonardo Arduíno Marano
- Genetics Department, Faculty of Medicine of Ribeirão Preto, University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
| | - Celso Teixeira Mendes-Junior
- Departamento de Química - Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP - USP), Ribeirão Preto, São Paulo, Brazil
| | - Sérgio Zucoloto
- Pathology Department, Faculty of Medicine of Ribeirão Preto, University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
| | - Eduardo Antônio Donadi
- Clinical Immunology Division, Department of Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
| | - Ana de Lourdes Candolo Martinelli
- Gastroenterology Division, Department of Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo (FMRP-USP), Ribeirão Preto, São Paulo, Brazil
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Association of TNF-α Promoter Polymorphism with HBV Associated Disease Outcome Among HBV Infected Patients from Orissa, Southern Part of East India. J Clin Exp Hepatol 2014; 4:202-8. [PMID: 25755561 PMCID: PMC4284202 DOI: 10.1016/j.jceh.2014.08.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 08/14/2014] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND TNF-α promoter polymorphism has been known to be a potential predictive factor in patients with HBV infection. We therefore tried to investigate whether the TNF-α promoter polymorphism at position -238, -857 and -863 was associated with the outcome of HBV infection in a population from Orissa, southern part of East India. METHODS A total of 195 patients recruited for the study were classified into 85 controls and 110 HBV infected cases, which included 34 IC, 30 CLD, 32 LC and 14 HCC patients. The polymorphisms at the respective sites were detected by a PCR-RFLP followed by statistical analysis. RESULTS The frequency of the genotype -238 GG and the allele -238G in the cases (89.0% and 92.7% respectively) was significantly higher than that in the controls (68.2% and 82.2% respectively) (P < 0.001, OR = 3.8 and P = 0.001, OR = 2.73). Whereas the -238 GA genotype was significantly high in the control group (28.2%) when compared to the cases (7.2%) (P < 0.001, OR = 0.2). Similarly, the frequency of -863CC and the allele -863C was significantly higher among the cases (24.5% and 49.5%) compared to controls (1.17% and 34.7%), (P < 0.001, OR = 27.32 and P = 0.003, OR = 1.85), whereas the -863CA genotype was significantly high in the controls (67.0%) when compared to the cases (50.0%) (P = 0.01, OR = 0.49). Haplotype -863C/-857C/-238G in cases was significantly higher than controls (P = 0.002). Multivariate logistic regression analysis indicates that the genotype -863CC bears a negative association with liver disease progression. CONCLUSION The present study established an association of polymorphisms at site -238 and -863 of the TNF-α promoter with the outcome HBV infection and disease progression.
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Zhang TC, Zhao YQ, Hu GL, Liu XQ, Huang XK. The relationship between tumour necrosis factor-α gene polymorphism and susceptibility and clearance of the persistent hepatitis B virus infection in a Chinese population: a meta-analysis. Clin Microbiol Infect 2013; 20:227-34. [PMID: 23701172 DOI: 10.1111/1469-0691.12257] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 04/16/2013] [Accepted: 04/25/2013] [Indexed: 01/30/2023]
Abstract
To date, many studies conducted in the Chinese population have determined the correlation between the tumour necrosis factor-α (TNF-α)-238G/A, -308G/A, -857C/T and -863C/A polymorphisms and persistent hepatitis B virus (HBV) infection. However, their results remain inconclusive. With the aim of confirming this correlation, we performed a meta-analysis of 19 studies. The dichotomous data are presented as the OR with a 95% CI. The results of our study indicate that carriers of the TNF-α-857T allele among the pooled Chinese population were more likely to show spontaneous clearance of HBV (T vs C: OR = 0.824, 95% CI = 0.713-0.953, p 0.009; TT vs CC: OR = 0.701, 95% CI = 0.507-0.970, p 0.032; TC vs CC: OR = 0.804, 95% CI = 0.683-0.947, p 0.009; TT + TC vs CC: OR = 0.835, 95% CI = 0.716-0.974, p 0.021). The TNF-α-308A allele was associated with significantly reduced persistent HBV infection risk in the Chinese (A vs G: OR = 0.585, 95% CI = 0.456-0.751, p 0.002; AG vs GG: OR = 0.519, 95% CI = 0.341-0.789, p <0.000; AA + AG vs GG: OR = 0.512, 95% CI = 0.339-0.772, p 0.001). Persistent HBV infection susceptibility is associated with the TNF-α-308G/A gene polymorphism in the Chinese population, whereas HBV clearance is associated with the TNF-α-857C/T gene polymorphism.
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Affiliation(s)
- T-C Zhang
- Jiangxi Province Centre For Disease Control And Prevention, Nanchang, China
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Sawhney R, Visvanathan K. Polymorphisms of toll-like receptors and their pathways in viral hepatitis. Antivir Ther 2011; 16:443-58. [PMID: 21685532 DOI: 10.3851/imp1820] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Toll-like receptors (TLRs) are an important part of the innate immune response to a variety of pathogens including hepatic viral infections. Activation of TLRs stimulates a complex intracellular signalling cascade that results in production of proinflammatory cytokines and interferons important for antiviral responses as well as induction of the adaptive arm of the immune system. There is substantial evidence for an important role for TLRs and TLR-mediated signalling in the pathogenesis and outcomes of hepatitis B and C in particular, but it might also influence responses to other viral hepatitis infections. Several single nucleotide polymorphisms (SNPs) of TLRs, relevant adaptor molecules and cytokines mediated by TLR signalling have been described that alter innate immune responses and have been implicated in a variety of human diseases including viral and other infections. There is now significant evidence that a number of TLR SNPs can affect various clinical outcomes in Caucasian patients with chronic HCV. However, the role of these polymorphisms in acute and other chronic hepatitis infections, including HBV as well as in non-Caucasian populations, has not been elucidated. In addition, results for SNPs downstream of TLR activation, such as in relevant cytokines, are inconsistent and their influence requires further investigation to determine the clinical significance of genetic variations in these mediators.
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Affiliation(s)
- Rohit Sawhney
- Innate Immunity Laboratory, Department of Medicine, Monash University, Melbourne, Australia
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Zhang G, Li Z, Han Q, Li N, Zhu Q, Li F, Lv Y, Chen J, Lou S, Liu Z. Altered TNF-α and IFN-γ levels associated with PD1 but not TNFA polymorphisms in patients with chronic HBV infection. INFECTION GENETICS AND EVOLUTION 2011; 11:1624-30. [PMID: 21712100 DOI: 10.1016/j.meegid.2011.06.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 05/31/2011] [Accepted: 06/07/2011] [Indexed: 02/06/2023]
Abstract
Production of tumor necrosis factor (TNF)-α and interferon (IFN)-γ, two important cytokines involved in the immune responses to hepatitis B virus (HBV) infection, may be influenced by gene polymorphisms of TNFA and PD1. This study determined the associations of serum TNF-α and IFN-γ levels with TNFA promoter -308 G/A and -238 G/A and PD1 -606 G/A and +8669 G/A polymorphisms in chronic HBV patients and healthy controls. The results showed that TNFA polymorphisms had no association with TNF-α and IFN-γ levels. However, patients with PD1 -606 AA genotype had lower TNF-α and IFN-γ levels. HBV infection in patients with PD1 +8669 GG genotype altered TNF-α to higher levels compared with controls. HBV patients with PD1 -606A/+8669A or -606G/+8669A haplotype tended to have significantly lower or higher TNF-α and IFN-γ levels, respectively. Combined with the lower frequency of PD1 +8669 GG genotype in HBV patients and the minor contribution of PD1 -606 G allele to the protective role of PD1 +8669 G allele, it is indicated that PD1 -606 G allele in a haplotype with PD1 +8669 G allele may have strong inhibitory effect on programmed cell death-1 (PD-1) function and thus reduce its negative impact on T-cell activation and function, leading to higher cytokines secretion and exhibiting a protective role, while the minor predisposing role of PD1 -606 AA genotype to chronic HBV infection may be incurred by decreasing the inhibitory effect on PD-1 function.
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Affiliation(s)
- Guoyu Zhang
- Department of Infectious Diseases, First Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, People's Republic of China
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Association of HLA and TNF polymorphisms with the outcome of HBV infection in the South Indian population. Genes Immun 2011; 12:552-8. [PMID: 21593777 DOI: 10.1038/gene.2011.32] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The role of host genetic factors in the pathogenesis and outcome of hepatitis B virus (HBV) infection is not well known. We assessed the association of HLA and TNF (rs361525, rs1800629, rs1799724, rs1800630 and rs1799964) polymorphisms with HBV outcome in the South Indian population. Association of HLA polymorphism was analyzed in 90 individuals from each group, that is, spontaneous recovery (SR) and chronic-HBV (C-HBV) infection. The role of TNF polymorphisms was evaluated in 150 subjects with SR and 137 patients with C-HBV infection. After adjusting for age and sex, HLA-DRB1*07:01 was strongly associated with chronicity (corrected P-value (pc) <0.005, odds ratio (OR) 3.76, 95% confidence interval (CI) 1.84-7.68). The rs1800630 genotype was associated with HBV outcome in codominant (pc<0.01, OR=1.99, 95% CI 1.30-3.05) and dominant (pc<0.01, OR=2.28, 95% CI 1.35-3.84) analyzing models after adjusting for age and sex. Similarly, the rs1799964 genotype was associated with HBV outcome in codominant (pc=0.01, OR=1.57, 95% CI 1.09-2.27) and dominant (pc<0.01, OR=2.21, 95% CI 1.27-3.83) analyzing models. Haplotype analysis (rs1799964/rs1800630/rs1799724/rs1800629/rs361525) revealed that the CACGG haplotype was strongly associated with C-HBV infection (P=0.0004). Our study suggests that inheritance of HLA and TNF polymorphisms might explain the outcome of HBV infection in the South Indian population.
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Xia Q, Zhou L, Liu D, Chen Z, Chen F. Relationship between TNF-<alpha> gene promoter polymorphisms and outcomes of hepatitis B virus infections: a meta-analysis. PLoS One 2011; 6:e19606. [PMID: 21572952 PMCID: PMC3091871 DOI: 10.1371/journal.pone.0019606] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Accepted: 04/01/2011] [Indexed: 01/30/2023] Open
Abstract
Background The clearance of hepatitis B virus (HBV) is a complex process which may be influenced by many factors including polymorphisms in the tumor necrosis factor <alpha> (TNF-<alpha>) gene promoter. However, previous reports regarding the relationship between polymorphisms in the TNF-<alpha> promoter and HBV clearance have been inconsistent. Therefore, we performed a meta-analysis on a large population to address this inconsistency. Methods A meta-analysis was performed to examine the association between TNF-<alpha> promoter polymorphisms (-1031T/C, -863C/A, -857C/T, -308G/A and-238G/A) and chronic hepatitis B infection. Odds ratio (OR) and its 95 % confidence interval (CI) were used. Results Twelve studies were chosen in our meta-analysis, involving 2,754 chronic HBV infection cases and 1,630 HBV clearance cases. The data showed that TNF-<alpha>-863 CC genotype was significantly associated with HBV clearance (-863 CC vs. AA: OR, 0.64; 95% CI, [0.42, 0.97]; p = 0.04) while patients carrying -308 GG genotype had a significantly increased risk of HBV persistence compared with those with GA or AA genotype (GG vs. GA+AA: OR, 1.35; 95% CI, [1.08, 1.70]; p = 0.01). For the other polymorphisms, no association with HBV infection outcome was found. Conclusions The data showed that polymorphisms -863 A and -308 G in the TNF-<alpha> gene promoter region might be risk factors for HBV persistence. Furthermore, ethnicity might play an important role in HBV infection outcome, leading to conflicting results. More studies on individuals from various ethnic groups will be necessary to determine the role of TNF-<alpha> promoter polymorphisms in the outcome of HBV infection.
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Affiliation(s)
- Qi Xia
- State Key Laboratory of Infectious Disease Diagnosis and Treatment, College of Medicine, First Affiliated Hospital, Zhejiang University, Zhejiang, China
| | - LinFu Zhou
- Department of Biochemistry, College of Medicine, Zhejiang University, Zhejiang, China
| | - Dongcheng Liu
- State Key Laboratory of Infectious Disease Diagnosis and Treatment, College of Medicine, First Affiliated Hospital, Zhejiang University, Zhejiang, China
| | - Zhi Chen
- State Key Laboratory of Infectious Disease Diagnosis and Treatment, College of Medicine, First Affiliated Hospital, Zhejiang University, Zhejiang, China
| | - Feng Chen
- State Key Laboratory of Infectious Disease Diagnosis and Treatment, College of Medicine, First Affiliated Hospital, Zhejiang University, Zhejiang, China
- * E-mail:
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Kimkong I, Hirankarn N, Nakkuntod J, Kitkumthorn N. Tumour necrosis factor-alpha gene polymorphisms and susceptibility to oral lichen planus. Oral Dis 2010; 17:206-9. [DOI: 10.1111/j.1601-0825.2010.01722.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Singhal S, Kohaar I, Bharadwaj M, Shukla DK, Das BC, Kar P. Association of tumor necrosis factor-alpha gene promoter polymorphisms with acute viral hepatitis in the Indian population. Dig Dis Sci 2010; 55:1106-12. [PMID: 19390969 DOI: 10.1007/s10620-009-0799-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2009] [Accepted: 03/17/2009] [Indexed: 01/13/2023]
Abstract
The key elements that determine the host response to either the self-limited or a severe fulminant form of liver disease are unclear. We have investigated the potential association of single nucleotide polymorphisms (SNPs) in the promoter region of tumor necrosis factor-alpha (TNFalpha) in their susceptibility to acute viral hepatitis (AVH) and fulminant hepatic failure (FHF) patients exhibiting specific viral etiology. A total of 124 individuals including 64 cases comprising 27 FHF, 37 AVH, and 60 healthy controls were recruited. SNPs at -238 (G/A), -308 (G/A), -857 (C/T), and -863 (C/A) of TNFalpha were detected by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and confirmed by direct sequencing. Serum levels of TNFalpha were determined at admission and death or recovery. Association between the TNFalpha genotype and susceptibility to FHF was not evident; however, carrier genotypes in relation to the -308 (GA/AA) and -857 (CT/TT) loci were found to be significantly (P < or = 0.05) associated with susceptibility to AVH in relation to controls. The mean TNFalpha serum levels at admission were significantly higher (P < 0.001) in FHF than AVH patients, but no marked difference was observed between FHF-E (expired; n = 17) and FHF-S (survivors; n = 10), though the former were comparatively higher. This study suggests that SNPs at -308 and -857 of the TNFalpha promoter may represent an increased risk for the development of AVH but not for FHF in the Indian population.
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Affiliation(s)
- Shashideep Singhal
- Division of Gastroenterology, Department of Medicine, Maulana Azad Medical College and Lok Nayak Hospital, BL Taneja Block, BSZ Marg, New Delhi, 110001, India.
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Abstract
OBJECTIVES Genotype assessment has been suggested to be a tool for predicting disease severity in acute pancreatitis (AP). To study this hypothesis, we performed genotype analysis of tumor necrosis factor (TNF) -308 A/G, CD14 -159C/T, and HSPA1B +1267 A/G polymorphisms. METHODS This is a case-control association study of 397 patients with AP (214 of whom had an alcohol-induced AP) and 300 controls. The control group comprised 218 subjects with detailed data of alcohol consumption, 70 of whom were heavy drinkers (daily alcohol intake >40 g), and 92 blood donors. The severity of AP was determined according to the Atlanta classification. Genotyping was performed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry-assisted genotyping method. RESULTS Major allele frequency in TNF gene was 0.87 for patients with AP and 0.86 for controls. For CD14, the gene major allele frequency was 0.60 for patients and 0.63 for controls. For HSPA1B, the major allele frequencies were 0.52 for patients and 0.49 for controls, respectively. The allele frequencies did not differ significantly between AP patients with organ failure and those with mild disease, patients with alcohol-induced AP, or those with biliary AP. The patients with septic infectious complications (n = 47) had genotype distribution no different from those with mild, uncomplicated disease (n = 245). CONCLUSIONS The TNF, CD14, and HSPA1B polymorphisms studied seem not to play a role in determining the severity of AP or the risk of alcohol-induced AP and thus do not serve as a tool for predicting disease severity.
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Chan HLY, Tse AML, Chim AML, Wong VWS, Choi PCL, Yu J, Zhang M, Sung JJY. Association of cytokine gene polymorphisms and liver fibrosis in chronic hepatitis B. J Gastroenterol Hepatol 2008; 23:783-9. [PMID: 17645476 DOI: 10.1111/j.1440-1746.2007.05110.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIM As liver fibrosis is the result of persistent necroinflammation in the liver, pro-inflammatory cytokines secreted in response to cell injury have a central role in the pathogenesis of liver fibrosis. We aimed to investigate the association of cytokine gene polymorphism and liver fibrosis among Chinese patients with chronic hepatitis B. METHODS Polymorphisms at interleukin-10 (IL-10-627, -1117), interleukin-1-beta (IL-1beta-511, -31, -3964), interleukin-1 receptor antagonist (IL-1RN), and tumor necrosis factor-alpha (TNF-alpha-308, -238) among Chinese chronic hepatitis B patients were determined. Severe liver fibrosis was defined as Ishak fibrosis score = 4 (of 6). RESULTS Fifty-nine of 273 (22%) patients had severe fibrosis. The distribution of genotypes for IL-10-627 was CC (11%), CA (41%), and AA (48%). The CC genotype at IL-10-627 was protective against severe fibrosis (odds ratio (OR) 0.11; 95% CI 0.014-0.82; P = 0.032). After adjusted for baseline variables, the adjusted OR of CC genotypes at IL-10-627 for severe fibrosis was 0.063 (95% CI 0.06-0.64; P = 0.063). Other gene polymorphisms at IL-1beta, IL-1RN, TNF-alpha, and IL-10 had no significant association with severe fibrosis. Weak linkage disequilibrium was observed between IL-10-627 and IL-10-1117 with linkage disequilibrium coefficient of 0.12 (P < 0.001). The distribution of haplotypes of IL-10-1117 and IL-10-627 was A-A (69%), A-C (26%), and G-C (5%). High and intermediate IL-10 production (A-C and G-C) haplotypes were protective against severe fibrosis (OR 0.62; 95% CI 0.39-0.99; P = 0.046). CONCLUSIONS High production genotype and haplotypes of IL-10 were associated with less severe liver fibrosis in chronic hepatitis B in Chinese.
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Affiliation(s)
- Henry L-Y Chan
- Institute of Digestive Disease and Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong.
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17
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Wang S, Wei M, Han Y, Zhang K, He L, Yang Z, Su B, Zhang Z, Hu Y, Hui W. Roles of TNF-alpha gene polymorphisms in the occurrence and progress of SARS-Cov infection: a case-control study. BMC Infect Dis 2008; 8:27. [PMID: 18312678 PMCID: PMC2291466 DOI: 10.1186/1471-2334-8-27] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2007] [Accepted: 02/29/2008] [Indexed: 01/15/2023] Open
Abstract
Background Host genetic factors may play a role in the occurrence and progress of SARS-Cov infection. This study was to investigate the relationship between tumor necrosis factor (TNF)-α gene polymorphisms with the occurrence of SARS-CoV infection and its role in prognosis of patients with lung interstitial fibrosis and femoral head osteonecrosis. Methods The association between genetic polymorphisms of TNF-α gene and susceptibility to severe acute respiratory syndromes (SARS) was conducted in a hospital-based case-control study including 75 SARS patients, 41 health care workers and 92 healthy controls. Relationships of TNF-α gene polymorphisms with interstitial lung fibrosis and femoral head osteonecrosis were carried out in two case-case studies in discharged SARS patients. PCR sequencing based typing (PCR-SBT) method was used to determine the polymorphisms of TNF-α gene in locus of the promoter region and univariate logistic analysis was conducted in analyzing the collected data. Results Compared to TT genotype, the CT genotype at the -204 locus was found associated with a protective effect on SARS with OR(95%CI) of 0.95(0.90–0.99). Also, TT genotype, CT and CC were found associated with a risk effect on femoral head necrosis with ORs(95%CI) of 5.33(1.39–20.45) and 5.67(2.74–11.71), respectively and the glucocorticoid adjusted OR of CT was 5.25(95%CI 1.18–23.46) and the combined (CT and CC) genotype OR was 6.0 (95%CI 1.60–22.55) at -1031 site of TNF-α gene. At the same time, the -863 AC genotype was manifested as another risk effect associated with femoral head necrosis with OR(95%CI) of 6.42(1.53–26.88) and the adjusted OR was 8.40(95%CI 1.76–40.02) in cured SARS patients compared to CC genotype. Conclusion SNPs of TNF-α gene of promoter region may not associate with SARS-CoV infection. And these SNPs may not affect interstitial lung fibrosis in cured SARS patients. However, the -1031CT/CC and -863 AC genotypes may be risk factors of femoral head necrosis in discharged SARS patients.
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Affiliation(s)
- Shixin Wang
- Department of Epidemiology, Medical College of Chinese People's Armed Police Force, Tianjin, China.
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18
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Viel DO, Tsuneto LT, Sossai CR, Lieber SR, Marques SBD, Vigorito AC, Aranha FJP, de Brito Eid KA, Oliveira GB, Miranda ECM, de Souza CA, Visentainer JEL. IL2 and TNFA gene polymorphisms and the risk of graft-versus-host disease after allogeneic haematopoietic stem cell transplantation. Scand J Immunol 2008; 66:703-10. [PMID: 18021367 DOI: 10.1111/j.1365-3083.2007.02021.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This study aimed to analyse the association of gene polymorphisms with the outcome of allogeneic haematopoietic stem cell transplantation. We studied 122 donor/recipient pairs who received HLA-identical transplants from siblings at the Universidade Estadual de Campinas, Brazil, between June 1996 and June 2006. Donor/recipient alleles for TNFA-238 and IL2-330/+166 single-nucleotide polymorphisms (SNP) were analysed by PCR-SSP. No association was observed between the risk of acute graft-versus-host disease (GVHD) and these SNP. However, our findings suggest that the polymorphism of promoter gene TNFA-238GA is associated with the occurrence and severity of chronic GVHD. The probability of chronic GVHD in patients with GA genotype at position -238 of TNFA gene is 91.7% in contrast to 59.4% in patients with GG genotype (P = 0.038). In patients with donor GA genotype the probability of chronic GVHD is 90.8%, and 57.9% in patients with donor GG genotype (P = 0.038). The probability of extensive chronic GVHD in patients with TNFA-238GA is 91.7% compared with 46.3% in patients with TNFA-238GG (P = 0.0046). In patients with donor GA genotype at position -238 of the TNFA gene, it is 81.7%, compared with 44.5% in patients with donor GG genotype (P = 0.016). However, further studies with more patients are required to identify cytokine gene polymorphisms and their association with transplant-related complication in Brazil, particularly due to ethnic background, the relatively low power of detection of genetic markers of this study, and the complexity of the MHC region.
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Affiliation(s)
- D O Viel
- Laboratório de Imunogenética, Departamento de Análises Clínicas, Universidade Estadual de Maringá, Maringá, PR, Brazil
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Ribeiro CSS, Visentainer JEL, Moliterno RA. Association of cytokine genetic polymorphism with hepatitis B infection evolution in adult patients. Mem Inst Oswaldo Cruz 2008; 102:435-40. [PMID: 17612762 DOI: 10.1590/s0074-02762007005000043] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2006] [Accepted: 03/07/2007] [Indexed: 12/12/2022] Open
Abstract
The infection by the hepatitis B virus (HBV) has different forms of evolution, ranging from self-limited infection to chronic hepatic disease. The objective of this study was to evaluate the influence of cytokine genetic polymorphisms in the disease evolution. The patients were divided into two groups, one with chronic HBV (n = 30), and the other with self-limited infection (n = 41). The genotyping for TNF (-308), TGFB1 (+869, +915), IL-10 (1082, -819, and -592), IL-6 (-174), and IFNG (+874) was accomplished by the PCR-SSP (polymerase chain reaction with sequence specific primers technique using the One Lambda kit. Although no statistically significant differences were found between the groups, the combination of TNF -308GG and IFNG +874TA was found in a lower frequency in chronic patients than in individuals with self-limited infection (26.7 versus 46.3%; P = 0.079; OR = 0.40; IC95% = 0.14-1.11). In chronic patients with histological alterations it was not observed the genotype TGFB1+869 C/C, against 24.4% in the self limited infection group (100 versus 75.6%; P = 0.096; OR = 7.67; IC95% = 0.42-141.63). Further studies in other populations, and evaluation of a greater number of individuals could contribute for a better understanding of the cytokine genetic polymorphism influence in HBV infection evolution.
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20
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Hirankarn N, Avihingsanon Y, Wongpiyabovorn J. Genetic susceptibility to SLE is associated with TNF-alpha gene polymorphism –863, but not –308 and –238, in Thai population. Int J Immunogenet 2007; 34:425-30. [DOI: 10.1111/j.1744-313x.2007.00715.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Kummee P, Tangkijvanich P, Poovorawan Y, Hirankarn N. Association of HLA-DRB1*13 and TNF-alpha gene polymorphisms with clearance of chronic hepatitis B infection and risk of hepatocellular carcinoma in Thai population. J Viral Hepat 2007; 14:841-8. [PMID: 18070287 DOI: 10.1111/j.1365-2893.2007.00880.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Considerable evidence suggests that host genetic factor play an important role in the pathogenesis and clinical outcome of chronic hepatitis B virus (HBV) infection in several ethic groups. Association study was performed included 150 chronic HBV patients, 100 resolved hepatitis B and 150 healthy individuals with similar ethic background. Interestingly, human leucocyte antigen (HLA)-DR13 show a strong association with the clearance of HBV [odds ratio (OR) = 0.04, 95% confidence interval (CI) = 0.00-0.26, corrected P-value (P(c)) = 0.0008] similar to reports from several ethic groups. TNF-alpha promoter polymorphisms (-863, -308 and -238) were also analysed. Only -863 C allele was found to be significantly decreased in chronic HBV patients compared with healthy control (P(c) = 0.03, OR = 0.54, 95% CI = 0.35-0.84 respectively). This -863C allele was not in linkage disequilibrium with HLA-DR13 suggesting that other genetic markers linked with -863C might influence clearance of chronic HBV infection in Thai. When stratified chronic HBV patients into patients without hepatocellular carcinoma (HCC) and with HCC, the -863 A allele was significantly increased in the HCC group compared to healthy control (P(c) = 0.003, OR = 2.61, 95% CI = 1.49-4.60). Haplotype analysis (-863/-308/-238) revealed that the homozygosity of the haplotype (CGG/CGG) was a protective marker for HCC (OR = 0.37, 95% CI = 0.17-0.79, P(c) = 0.02). One can propose that carriers of -863A genotype are associated with increased levels of TNF-alpha in the liver in response to HBV infection and induce hapatocyte damage that may finally lead to HCC development. Additional study is needed to validate these finding and to further explore the genetic pathogenesis of HBV infection.
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Affiliation(s)
- P Kummee
- Inter-Department of Medical Microbiology, Graduate School, Chulalongkorn University, Bangkok, Thailand
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22
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Singh R, Kaul R, Kaul A, Khan K. A comparative review of HLA associations with hepatitis B and C viral infections across global populations. World J Gastroenterol 2007; 13:1770-87. [PMID: 17465466 PMCID: PMC4149952 DOI: 10.3748/wjg.v13.i12.1770] [Citation(s) in RCA: 168] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Hepatitis B (HBV) and hepatitis C (HCV) viral infection or co-infection leads to risk of development of chronic infection, cirrhosis and hepatocellular carcinoma (HCC). Immigration and globalization have added to the challenges of public health concerns regarding chronic HBV and HCV infections worldwide. The aim of this study is to review existing global literature across ethnic populations on HBV and HCV related human leukocyte antigen (HLA) associations in relation to susceptibility, viral persistence and treatment. Extensive literature search was conducted to explore the HLA associations in HBV and HCV infections reported across global populations over the past decade to understand the knowledge status, weaknesses and strengths of this information in different ethnic populations. HLA DR13 is consistently associated with HBV clearance globally. HLADRB1*11/*12 alleles and DQB1*0301 are associated with HBV persistence but with HCV clearance worldwide. Consistent association of DRB1*03 and *07 is observed with HCV susceptibility and non-responsiveness to HBV vaccination across the population. HLA DR13 is protective for vertical HBV and HCV transmission in Chinese and Italian neonates, but different alleles are associated with their susceptibility in these populations. HLA class I molecule interactions with Killer cell immunoglobulin like receptors (KIR) of natural killer (NK) cells modulate HCV infection outcome via regulating immune regulatory cells and molecules. HLA associations with HBV vaccination, interferon therapy in HBV and HCV, and with extra hepatic manifestations of viral hepatitis are also discussed. Systematic studies in compliance with global regulatory standards are required to identify the HLA specific viral epitope, stage specific T cell populations interacting with different HLA alleles during disease progression and viral clearance of chronic HBV or HCV infections among different ethnic populations. These studies would facilitate stage specific therapeutic strategies for clearance of HBV and HCV infections or co-infections across global populations and aid in identification of HBV-HCV combined vaccine. HLA associations of chronic HBV or HCV development with confounding host factors including alcohol, drug abuse, insulin resistance, age and gender are lacking and warrant detailed investigation across global populations.
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Affiliation(s)
- Rashmi Singh
- Department of Biochemistry and Microbiology, Oklahoma States University-Center of Health sciences, 1111 W. 17th St. Tulsa, OK 74107, United States.
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Maes P, Clement J, Groeneveld PHP, Colson P, Huizinga TWJ, Van Ranst M. Tumor necrosis factor-alpha genetic predisposing factors can influence clinical severity in nephropathia epidemica. Viral Immunol 2006; 19:558-64. [PMID: 16987073 DOI: 10.1089/vim.2006.19.558] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Severe human infection with Hantavirus is characterized by high fever, cold chills, thrombocytopenia, arterial hypotension, acute renal failure, and/or adult respiratory distress syndrome (ARDS)-like pulmonary involvement, but the clinical course varies greatly between individuals. We investigated whether genetically determined differences in tumor necrosis factor (TNF)-alpha production can influence the severity of Hantavirus disease. We studied a TNF-alpha single-nucleotide promoter polymorphism (SNP) at position -238 (a guanine [G]-to-adenine [A] transition) and ex vivo TNF-alpha production in a recall study of 36 Belgian patients who had a serologically proven form of Puumala virus-induced Hantavirus infection with the kidney as main target organ. In our study, the highest creatinine levels were found in patients with the lowest ex vivo TNF-alpha production. Creatinine levels correlated inversely with TNF-alpha production (R = -0.35, p < 0.05). The number of thrombocytes was significantly lower in patients with the GA-238 genotype (low TNF-alpha producers) compared with patients with the GG-238 genotype. In our study, genetically determined low production of TNF-alpha was associated with some parameters indicating a more severe clinical course of Puumala Hantavirus infection in humans, possibly by impaired activation of TNF-alpha-dependent antiviral mechanisms, which could in turn result in decreased clearance of Hantavirus.
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Affiliation(s)
- Piet Maes
- Laboratory of Clinical and Epidemiological Virology, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium
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24
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Du T, Guo XH, Zhu XL, Li JH, Lu LP, Gao JR, Gou CY, Li Z, Liu Y, Li H. Association of TNF-alpha promoter polymorphisms with the outcomes of hepatitis B virus infection in Chinese Han population. J Viral Hepat 2006; 13:618-24. [PMID: 16907849 DOI: 10.1111/j.1365-2893.2006.00731.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Host genetic factors and environment factors including hepatitis B virus (HBV) genotypes are widely studied for the different outcomes of HBV infection. Recent studies suggest that tumour necrosis factor-alpha (TNF-alpha) plays a pivotal role in the viral clearance and host immune response to HBV, and the capacity for TNF-alpha production in individuals is influenced by a major genetic component. In this study, we aimed to explore whether the single-nucleotide polymorphisms (SNPs) of TNF-alpha promoter are associated with the outcomes of HBV infection in the Chinese Han population. One hundred and forty-three spontaneously recovered HBV subjects and 196 chronic hepatitis B patients were recruited in this case-control study in the Beijing area of China. Polymerase chain reaction-restriction fragment-length polymorphism (PCR-RFLP) and sequence-specific primer-PCR (SSP-PCR) were used to detect the SNPs of five sites in the TNF-alpha promoter (-238G/A, -308G/A, -857C/T, -863C/A, -1031T/C). The frequency distributions of genotypes and haplotypes in two groups were analysed by EPI and EH programs. The presence of the -238GG genotype was significantly correlated with persistence of HBV infection (OR = 4.08, P = 0.02), and -857TT genotype appeared in relation to the spontaneous clearance of HBV (OR = 0.47, P = 0.03). Frequency of haplotype GGCCT (-238/-308/-857/-863/-1031) in the chronic HB group was significantly lower than that in spontaneously recovered group (P = 0.03), and frequencies of haplotypes GGCAT and GGTAT in the chronic HB group were significantly higher than those in the spontaneously recovered group (P = 0.0001, P = 0.0004). In conclusion, TNF-alpha promoter polymorphisms are independently associated with different outcomes of HBV infection.
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Affiliation(s)
- T Du
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, Beijing, China
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Abstract
Genetic epidemiology researches such as twin studies, family-clustering of hepatitis B virus (HBV) infection studies and ethnic difference studies have provided the evidence that host genetic factors play an important role in determining the outcome of HBV infection. The opening questions include which human genes are important in infection and how to find them. Though a number of studies have sought genetic associations between HBV infection/persistence and gene polymorphisms, the candidate gene-based approach is clearly inadequate to fully explain the genetic basis of the disease. With the advent of new genetic markers and automated genotyping, genetic mapping can be conducted extremely rapid. This approach has been successful in some infectious diseases. Linkage analysis can find host genes susceptible to HBV and is of great clinical importance.
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Affiliation(s)
- Ying-Li He
- Department of Infectious Diseases, the First Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, China
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N/A. N/A. Shijie Huaren Xiaohua Zazhi 2004; 12:2778-2781. [DOI: 10.11569/wcjd.v12.i12.2778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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27
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Zhang PA, Li Y, Xiang PX, Wu JM. Association of TNF-α gene promoter polymorphisms with outcome of hepatitis B virus infection. Shijie Huaren Xiaohua Zazhi 2004; 12:2086-2090. [DOI: 10.11569/wcjd.v12.i9.2086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the polymorphism of tumor necrosis factor-a(TNF-α) gene promoters in Chinese Han people, and to clarify whether such polymorphism was associated with the outcome of hepatitis B virus infection.
METHODS: After the process of extracting genomic DNA from blood in 165 subjects who spontaneously recovered(SR) and 131 patients with chronic hepatitis B (CHB), four single nucleotide polymorphism (SNP) sites in TNF-α gene promoter marked as -238G/A, -308G/A, -857C/T and -863C/A were determined by polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP) analysis.
RESULTS: Twelve different promoter genotypes were detected from all of 296 research subjects, and GG.GG.CC.CC, GG.GG.CC.CA, GG.GG.CT.CC, GG.GA.CC.CC genotypes accounted for about 85% of genotypes in these subjects. By analyzing the four promoter genotypes of TNF-α, the results showed that there were significant differences in the frequencies of GG.GG.CC.CC, GG.GG.CC.CA and GG.GA.CC·CC genotypes in TNF-α gene promoter between CHB and SR, GG.GG.CC.CC genotype carriers were at increased risk of CHB with an odds ratio of 2.15 (95% CI 1.34-3.45); While GG.GG.CC.CA and GG.GA.CC.CC genotypes carriers were at increased risk of CHB with an odds ratio of 0.48(95% CI 0.27-0.86) and 0.35 (95% CI 0.14-0.89), respectively. GG.GG.CC.CA and GG.GA.CC.CC genotypes were strongly associated with the resolution of HBV infection(χ2 = 6.14, P = 0.013<0.05; χ2 = 5.18, P = 0.023<0.05, respectively). Single site analysis also revealed that TNF-α gene -308G/A and -863C/A SNP sites were associated with persistent HBV infection in Chinese Han people (-308G/A site, χ2 = 6.53, P = 0.011<0.05, OR=3.21; -863C/A site, χ2 = 4.33, P = 0.037<0.05, OR=1.69, respectively).
CONCLUSION: There is an association between polymorphisms of the promoter region -308G/A and -863C/A of TNF-α and the resolution of HBV infection. The presence of the -308A allele (TNF-α-308GA) and /or -863A allele(TNF-α-863CA or AA) may be resistant to HBV infection, which gives some new clues to the study of pathogenesis of chronic hepatitis B.
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