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Suslova TA, Vavilov MN, Belyaeva SV, Evdokimov AV, Stashkevich DS, Galkin A, Kofiadi IA. Distribution of HLA-A, -B, -C, -DRB1, -DQB1, -DPB1 allele frequencies in patients with COVID-19 bilateral pneumonia in Russians, living in the Chelyabinsk region (Russia). Hum Immunol 2022; 83:547-550. [PMID: 35525710 PMCID: PMC9046060 DOI: 10.1016/j.humimm.2022.04.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 04/06/2022] [Accepted: 04/23/2022] [Indexed: 12/14/2022]
Abstract
In this population-based case-control study conducted in the Chelyabinsk region of Russia, we examined the distribution of HLA-A, -B, -C, -DRB1, -DQB1 and -DPB1, in a group of 100 patients with confirmed COVID-19 bilateral pneumonia. Typing was performed by NGS and statistical calculations were carried out with the Arlequin program. HLA-A, -B, -C, -DRB1, -DQB1 and -DPB1 alleles were compared between patients with COVID-19 and 99 healthy controls. We identified that COVID-19 susceptibility is associated with alleles and genotypes rs9277534A (disequilibrium with HLA-DPB1*02:01, -02:02, -04:01, -04:02, -17:01 alleles) with low expression of protein products HLA-DPB1 (pc < 0.028) and homozygosity at HLA-C*04 (p = 0.024, pc = 0.312). Allele HLA-A*01:01 was decreased in a group of patients with severe forms of bilateral pneumonia, and therefore it may be considered as a protective factor for the development of severe symptoms of COVID-19 (p = 0.009, pc = 0.225). Our studies provide further evidence for the functional association between HLA genes and COVID-19.
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Affiliation(s)
| | | | | | | | | | - Alexander Galkin
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, 407 East 61st Street, New York, NY 10065, United States
| | - Ilya A Kofiadi
- Pirogov Russian National Reseach Medical University, Moscow, Russia
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2
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Xu J, Zhan Q, Fan Y, Yu Y, Zeng Z. Human genetic susceptibility to hepatitis B virus infection. INFECTION GENETICS AND EVOLUTION 2020; 87:104663. [PMID: 33278635 DOI: 10.1016/j.meegid.2020.104663] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 11/26/2020] [Accepted: 11/30/2020] [Indexed: 02/06/2023]
Abstract
Hepatitis B virus (HBV) infection is still a serious health threat worldwide. The outcomes of HBV infection consist of spontaneous HBV clearance and chronic HBV infection. Multiple factors contribute to the disparity of HBV infection outcomes, including host factors, viral factors and environmental factors. The present review comprehends the current researches mainly focusing on the relationships between genetic determinants, including single nucleotide polymorphisms (SNPs) and haplotypes, and susceptibility of HBV infection, namely chronic (persistent) HBV infection and HBV clearance. A number of determinants in the chromosomes, including mutations in human leukocyte antigens (HLAs), cytokines genes, toll-like receptors (TLRs), and other genes are related to the human susceptibility to HBV infection. Among the above variants, some of those in HLAs have been studied and replicated in multiple-ethnic populations and came to consistent conclusions, while some others are novel and need to be evaluated further.
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Affiliation(s)
- Jinghang Xu
- Department of Infectious Diseases, Peking University First Hospital, Peking University Health Science Center, Beijing 100034, China
| | - Qiao Zhan
- Department of Infectious Diseases, Peking University First Hospital, Peking University Health Science Center, Beijing 100034, China
| | - Yanan Fan
- Department of Infectious Diseases, Peking University First Hospital, Peking University Health Science Center, Beijing 100034, China
| | - Yanyan Yu
- Department of Infectious Diseases, Peking University First Hospital, Peking University Health Science Center, Beijing 100034, China.
| | - Zheng Zeng
- Department of Infectious Diseases, Peking University First Hospital, Peking University Health Science Center, Beijing 100034, China.
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3
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Zhang Z, Wang C, Liu Z, Zou G, Li J, Lu M. Host Genetic Determinants of Hepatitis B Virus Infection. Front Genet 2019; 10:696. [PMID: 31475028 PMCID: PMC6702792 DOI: 10.3389/fgene.2019.00696] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 07/03/2019] [Indexed: 12/14/2022] Open
Abstract
Chronic hepatitis B virus (HBV) infection is still a major health problem worldwide. Recently, a great number of genetic studies based on single nucleotide polymorphisms (SNPs) and genome-wide association studies have been performed to search for host determinants of the development of chronic HBV infection, clinical outcomes, therapeutic efficacy, and responses to hepatitis B vaccines, with a focus on human leukocyte antigens (HLA), cytokine genes, and toll-like receptors. In addition to SNPs, gene insertions/deletions and copy number variants are associated with infection. However, conflicting results have been obtained. In the present review, we summarize the current state of research on host genetic factors and chronic HBV infection, its clinical type, therapies, and hepatitis B vaccine responses and classify published results according to their reliability. The potential roles of host genetic determinants of chronic HBV infection identified in these studies and their clinical significance are discussed. In particular, HLAs were relevant for HBV infection and pathogenesis. Finally, we highlight the need for additional studies with large sample sizes, well-matched study designs, appropriate statistical methods, and validation in multiple populations to improve the treatment of HBV infection.
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Affiliation(s)
- Zhenhua Zhang
- Department of Infectious Diseases, the Second Affiliated Hospital of Anhui Medical University, Hefei, China
- College of Pharmacy, Anhui Medical University, Hefei, China
| | - Changtai Wang
- Department of Infectious Diseases, the Affiliated Anqing Hospital of Anhui Medical University, Anqing, China
| | - Zhongping Liu
- Department of Infectious Diseases, the Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Guizhou Zou
- Department of Infectious Diseases, the Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Jun Li
- College of Pharmacy, Anhui Medical University, Hefei, China
| | - Mengji Lu
- Institute of Virology, University Hospital of Duisburg-Essen, Essen, Germany
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4
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Koukoulioti E, Fischer J, Schott E, Fülöp B, Heyne R, Berg T, van Bömmel F. Association of HLA-DPA1 and HLA-DPB1 polymorphisms with spontaneous HBsAg seroclearance in Caucasians. Liver Int 2019; 39:646-654. [PMID: 30471179 DOI: 10.1111/liv.14008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 10/11/2018] [Accepted: 11/07/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND & AIMS Acute hepatitis B virus (HBV) infections may clear spontaneously or become chronic and run through different phases. The single nucleotide polymorphisms (SNPs) rs3077, rs9277535 and rs9277534 within the human leucocyte antigen (HLA)-DP gene have been found to be associated with HBV susceptibility and persistence in Asians. However, evidence for the influence of these variants in Caucasians has been limited so far. The aim of our study was to investigate the impact of these polymorphisms on the outcome of HBV infections in a large Caucasian population. METHODS In this case-control study, we retrospectively analysed 1111 Caucasian individuals, including 618 with chronic HBV infections (CHB), 239 with spontaneous HBsAg seroclearance (SC) and 254 healthy controls (HC). The rs3077, rs9277535 and rs9277534 SNPs were genotyped by a polymerase chain reaction from blood samples and melting curve analysis. RESULTS A significant difference in the allele distributions was observed only for the rs3077 SNP between the HC and the CHB group as well as between the SC and CHB groups. The rs3077-C allele was associated with a lower probability for spontaneous HBsAg seroclearance in comparison with the rs3077-T allele (OR 0.704, 95% CI 0.509-0.974; P = 0.033). No association of the three SNPs with the stages of chronic HBV infection was found. CONCLUSION This is the first study demonstrating an association of the rs3077-T allele with spontaneous HBsAg seroclearance in Caucasians. Further studies are needed to elucidate the role of HLA-DP variants in disease pathogenesis and their potential role for individualized disease management.
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Affiliation(s)
- Eleni Koukoulioti
- Department of Gastroenterology and Rheumatology, Section of Hepatology, University Hospital Leipzig, Leipzig, Germany
| | - Janett Fischer
- Department of Gastroenterology and Rheumatology, Section of Hepatology, University Hospital Leipzig, Leipzig, Germany
| | - Eckart Schott
- Department of Internal Medicine II, HELIOS Hospital Emil von Behring, Berlin, Germany
| | - Balazs Fülöp
- Department of Gastroenterology and Rheumatology, Section of Hepatology, University Hospital Leipzig, Leipzig, Germany.,Department of Internal Medicine and Gastroenterology, HELIOS Hospital Berlin-Buch, Berlin, Germany
| | - Renate Heyne
- Department of Internal Medicine and Gastroenterology, HELIOS Hospital Berlin-Buch, Berlin, Germany
| | - Thomas Berg
- Department of Gastroenterology and Rheumatology, Section of Hepatology, University Hospital Leipzig, Leipzig, Germany
| | - Florian van Bömmel
- Department of Gastroenterology and Rheumatology, Section of Hepatology, University Hospital Leipzig, Leipzig, Germany
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5
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Ou G, Liu X, Yang L, Yu H, Ji X, Liu F, Xu H, Qian L, Wang J, Liu Z. Relationship between HLA-DPA1 mRNA expression and susceptibility to hepatitis B. J Viral Hepat 2019; 26:155-161. [PMID: 30267609 DOI: 10.1111/jvh.13012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 09/07/2018] [Indexed: 12/12/2022]
Abstract
Chronic hepatitis B virus (HBV) infection is influenced by both viral and host factors. In genome-wide association studies, the human leucocyte antigen HLA-DPA1 and related polymorphism rs3077 were found to be associated with susceptibility to and spontaneous clearance of HBV infection. Here, we evaluated the association between HLA-DPA1 mRNA expression and the risk of HBV infection. HLA-DPA1 and rs3077 polymorphisms were investigated in 169 patients with chronic HBV and 217 healthy controls (HCs) from Sichuan Han blood donors using sequence-based typing and meta-analysis for HLA-DPA1 alleles. HLA-DPA1 mRNA levels were measured by real-time polymerase chain reaction. The results showed that HLA-DPA1 and rs3077 were associated with HBV infection in the Sichuan population. Rs3077T and DPA1*01:03 played protective roles in HBV infection, and rs3077C and DPA1*02:02 increased susceptibility to HBV infection. We found that the HLA-DPA1 mRNA expression was decreased in the CHB group; in particular, the 3077CT, 3077TT, DPA1*01:03 and DPA1*02:01 alleles showed a significant decrease. Our results demonstrated, for the first time, that expression of HLA-DPA1 alleles and rs3077 affected the risk of HBV infection. Genotypes with lower HLA-DPA1 expression had a greater susceptibility to HBV infection. Thus, further independent studies are needed to strengthen the associations of these polymorphisms with susceptibility to and clearance of HBV infection in Chinese populations.
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Affiliation(s)
- Guojin Ou
- Department of Laboratory Medicine, West China Second University Hospital, Sichuan University, Chengdu, China.,Clinical Blood Transfusion Research Center, Institute of Blood Transfusion, CAMS & PUMC, Chengdu, China.,Key Laboratory of Transfusion Adverse Reactions, CAMS, Chengdu, China.,Key Laboratory of Birth Defects and Related Diseases of Women and Children, (Sichuan University), Ministry of Education, Chengdu, China
| | - Xiao Liu
- Deyang People's Hospital, Deyang, China
| | - Liu Yang
- Tianfu New District People's Hospital, Chengdu, China
| | - Hao Yu
- Clinical Blood Transfusion Research Center, Institute of Blood Transfusion, CAMS & PUMC, Chengdu, China.,Key Laboratory of Transfusion Adverse Reactions, CAMS, Chengdu, China
| | - Xin Ji
- Clinical Blood Transfusion Research Center, Institute of Blood Transfusion, CAMS & PUMC, Chengdu, China.,Key Laboratory of Transfusion Adverse Reactions, CAMS, Chengdu, China
| | - Fan Liu
- Clinical Blood Transfusion Research Center, Institute of Blood Transfusion, CAMS & PUMC, Chengdu, China.,Key Laboratory of Transfusion Adverse Reactions, CAMS, Chengdu, China
| | - Haixia Xu
- Clinical Blood Transfusion Research Center, Institute of Blood Transfusion, CAMS & PUMC, Chengdu, China.,Key Laboratory of Transfusion Adverse Reactions, CAMS, Chengdu, China
| | | | - Jue Wang
- Clinical Blood Transfusion Research Center, Institute of Blood Transfusion, CAMS & PUMC, Chengdu, China.,Key Laboratory of Transfusion Adverse Reactions, CAMS, Chengdu, China
| | - Zhong Liu
- Clinical Blood Transfusion Research Center, Institute of Blood Transfusion, CAMS & PUMC, Chengdu, China.,Key Laboratory of Transfusion Adverse Reactions, CAMS, Chengdu, China
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Matsuda H, Hiramatsu K, Akazawa Y, Nosaka T, Saito Y, Ozaki Y, Hayama R, Takahashi K, Naito T, Ofuji K, Ohtani M, Nemoto T, Hida Y, Kimura H, Soya Y, Nakamoto Y. Genetic polymorphism and decreased expression of HLA class II DP genes are associated with HBV reactivation in patients treated with immunomodulatory agents. J Med Virol 2018; 90:712-720. [PMID: 29283185 DOI: 10.1002/jmv.25011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 11/14/2017] [Indexed: 12/16/2022]
Abstract
Hepatitis B virus (HBV) reactivation can be triggered by immunosuppressive chemotherapy. HLA class II molecules may play a role in HBV reactivation. Genetic polymorphism and mRNA expression of HLA class II were examined in patients with latent HBV infection treated with immunosuppressive therapies. Subjects with resolved HBV infection who had undergone treatment with immunosuppressive chemotherapies were retrospectively enrolled (n = 42) and divided into reactivated (n = 9) and non-reactivated groups (n = 33). Patients were genotyped for 17 single nucleotide polymorphisms (SNPs) within HLA class II DPA1, and DPB1, and mRNA expression levels of HLA class II genes were assessed. The frequency of the AA genotype of rs872956, a SNP in HLA-DPB1, was significantly higher in the reactivated group than in the non-reactivated group (55.6% vs 12.1%, P < 0.05). The frequencies of the T allele and non-AA genotypes (AT/TT) of rs3116996 (located in DPB1) were significantly higher in the reactivated group (T allele frequency: 16.7% vs 0.0% [P < 0.01], non-AA genotype frequency: 22.2% vs 0.0% [P < 0.05]). Multivariate logistic regression identified the AA genotype of rs872956 as an independent protective factor against HBV reactivation (odds ratio [OR] = 18.1, 95% confidence interval [CI] = 2.6-126.7, P < 0.01). mRNA expression of HLA-DPB1 was lower in the HBV reactivated group than in the non-reactivated group (median 276.1 ± 165.6/β-actin vs 371.4 ± 407.5/β-actin [P < 0.05]). These results suggest the involvement of HLA class II molecules in HBV reactivation after treatment with immunomodulatory agents.
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Affiliation(s)
- Hidetaka Matsuda
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Katsushi Hiramatsu
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Yu Akazawa
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Takuto Nosaka
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Yasushi Saito
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Yoshihiko Ozaki
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Ryoko Hayama
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Kazuto Takahashi
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Tatsushi Naito
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Kazuya Ofuji
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Masahiro Ohtani
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Tomoyuki Nemoto
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Yukio Hida
- Department of Clinical Laboratories, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Hideki Kimura
- Department of Clinical Laboratories, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Yoshihiro Soya
- Tsuruga Institute of Biotechnology, Toyobo Co., Ltd., Osaka, Japan
| | - Yasunari Nakamoto
- Second Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
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7
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Fan J, Huang X, Chen J, Cai Y, Xiong L, Mu L, Zhou L. Host Genetic Variants in HLA Loci Influence Risk for Hepatitis B Virus Infection in Children. HEPATITIS MONTHLY 2016; 16:e37786. [PMID: 27795724 PMCID: PMC5070562 DOI: 10.5812/hepatmon.37786] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 06/27/2016] [Accepted: 06/29/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND Hepatitis B virus (HBV) infection is a serious public health problem in China and worldwide. Mother-to-child transmission is one of HBV's main transmission routes in highly endemic regions. Genome-wide association studies (GWAS) identify single nucleotide polymorphisms (SNPs) at HLA loci as associated with HBV infection. However, the mechanisms of HBV perinatal transmission and breakthrough in children have not yet been clearly defined. OBJECTIVES We aimed to explore the association between SNPs at HLA loci and HBV infection and breakthrough in children. METHODS A total of 274 HBV-infected children and 353 controls were selected among children aged between 6 months and 12 years in China. Seven SNPs at HLA-DP and HLA-DQ loci were genotyped to analyze their association with HBV infection in children. RESULTS Alleles G in both HLA-DPA1 rs3077 and HLA-DPB1 rs9277535 were found to be significantly associated with HBV infection in children with odds ratios (OR) of 1.309 (95% CI 1.046 to 1.639) and 1.411 (95% CI 1.125 to 1.771), respectively. In addition, overdominant analysis found that the rs2281388 (HLA-DPB1) GA genotype and the rs9366816 (HLA-DPB2) TC genotype were related to HBV infection (rs2281388, OR = 1.422, 95% CI: 1.032-1.961; rs9366816, OR = 1.444, 95% CI: 1.045-1.994). Furthermore, this study highlighted that rs9277535 was also significantly associated with HBV breakthrough infection in children whose mothers were positive for hepatitis B surface antigen (HBsAg). CONCLUSIONS Our study confirmed that genetic variants in HLA-DPA1 and HLA-DPB1 loci have significant associations with HBV infection, especially with HBV breakthrough in children. This study provides insight into HBV infection in children and is valuable for the targeted management of, and control strategies for, this disease.
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Affiliation(s)
- Jie Fan
- Department of Epidemiology, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Xin Huang
- Department of Epidemiology, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Juan Chen
- Key Laboratory of Molecular Biology for Infectious Diseases, Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Yiling Cai
- Obstetrics and Gynecology Department, Chengdu Women and Children’s Central Hospital, Sichuan Province, China
| | - Lin Xiong
- Maternal and Child Health Hospital of Chongqing Yuzhong District, Chongqing, China
| | - Lihong Mu
- Department of Epidemiology, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
- Corresponding Authors: Lihong Mu, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, School of Public Health and Management, Chongqing Medical University, Chongqing, China. Tel/Fax: +86-2368485008, E-mail: ; Li Zhou, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, School of Public Health and Management, Chongqing Medical University, Chongqing, China. Tel/Fax: +86-2368486780, E-mail:
| | - Li Zhou
- Department of Epidemiology, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
- Key Laboratory of Molecular Biology for Infectious Diseases, Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
- Corresponding Authors: Lihong Mu, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, School of Public Health and Management, Chongqing Medical University, Chongqing, China. Tel/Fax: +86-2368485008, E-mail: ; Li Zhou, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, School of Public Health and Management, Chongqing Medical University, Chongqing, China. Tel/Fax: +86-2368486780, E-mail:
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8
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Clinical Relevance of HLA Gene Variants in HBV Infection. J Immunol Res 2016; 2016:9069375. [PMID: 27243039 PMCID: PMC4875979 DOI: 10.1155/2016/9069375] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 04/14/2016] [Indexed: 01/01/2023] Open
Abstract
Host gene variants may influence the natural history of hepatitis B virus (HBV) infection. The human leukocyte antigen (HLA) system, the major histocompatibility complex (MHC) in humans, is one of the most important host factors that are correlated with the clinical course of HBV infection. Genome-wide association studies (GWASs) have shown that single nucleotide polymorphisms (SNPs) near certain HLA gene loci are strongly associated with not only persistent HBV infection but also spontaneous HBV clearance and seroconversion, disease progression, and the development of liver cirrhosis and HBV-related hepatocellular carcinoma (HCC) in chronic hepatitis B (CHB). These variations also influence the efficacy of interferon (IFN) and nucleot(s)ide analogue (NA) treatment and response to HBV vaccines. Meanwhile, discrepant conclusions were reached with different patient cohorts. It is therefore essential to identify the associations of specific HLA allele variants with disease progression and viral clearance in chronic HBV infection among different ethnic populations. A better understanding of HLA polymorphism relevance in HBV infection outcome would enable us to elucidate the roles of HLA SNPs in the pathogenesis and clearance of HBV in different areas and ethnic groups, to improve strategies for the prevention and treatment of chronic HBV infection.
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9
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Hu J, Li QL, Hou SH, Peng H, Guo JJ. Association of Inducible T Cell Costimulator Polymorphisms with Susceptibility and Outcome of Hepatitis B Virus Infection in a Chinese Han Population. Scand J Immunol 2015; 82:275-81. [PMID: 26074057 DOI: 10.1111/sji.12319] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 05/21/2015] [Indexed: 12/13/2022]
Abstract
Inducible T cell costimulator (ICOS) functions to regulate cell-cell signalling, immune responses and cell proliferation. ICOS single nucleotide polymorphism (SNP) may affect protein expression and functions. This study investigated the association of ICOS SNPs with hepatitis B virus (HBV) infection and outcome in a Chinese population. A total of 1290 Chinese Han individuals were enrolled, including 63 asymptomatic HBV carriers, 220 chronic hepatitis B patients (CHB), 249 HBV-related liver cirrhosis patients (LC), 108 patients with HBV-related hepatocellular carcinoma (HCC), 338 patients with natural HBV clearance and 312 healthy subjects (as controls). DNA samples from these subjects were genotyped for four ICOS SNPs (rs11883722, rs10932029, rs1559931 and rs4675379) using TaqMan SNP Genotyping Assay and analysed. The data showed that genotype and allele frequencies of ICOS SNPs in cases and controls followed the Hardy-Weinberg distribution. The CC genotype of rs4675379 was higher in patients with HBV infection (including AC, CHB, LC and HCC) than in patients with HBV clearance (P = 0.006). Furthermore, the genotype 'GA' and the minor allele 'A' of rs1559931 were associated with a decreased HCC susceptibility (P < 0.001). Haplotype analysis data showed that 'GC' haplotype in block 2 (rs1559931 and rs4675379) had a lower frequency in patients than in HBV-cleared subjects (P = 0.034), although its overall frequency was only 1.6%. Our study found that ICOS rs1559931 SNP was associated with decreased HBV-related HCC risk in the studied Chinese Han population, except for patients with natural clearance of HBV.
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Affiliation(s)
- J Hu
- Department of Gastroenterology and Hepatology, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Q-L Li
- Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - S-H Hou
- Department of Gastroenterology and Hepatology, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - H Peng
- Department of Gastroenterology and Hepatology, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - J-J Guo
- Department of Gastroenterology and Hepatology, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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10
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Quantitative assessment of common genetic variations in HLA-DP with hepatitis B virus infection, clearance and hepatocellular carcinoma development. Sci Rep 2015; 5:14933. [PMID: 26462556 PMCID: PMC4604517 DOI: 10.1038/srep14933] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 09/11/2015] [Indexed: 02/06/2023] Open
Abstract
Hepatitis B virus (HBV) infection is the predominant risk factor for chronic hepatitis B (CHB), liver cirrhosis (LC) and hepatocellular carcinoma (HCC). Recently, genome-wide association studies have identified human leukocyte antigen (HLA)-DP polymorphisms (rs3077 and rs9277535) as a new chronic HBV infection susceptibility locus. Since then, the relationship between HLA-DP polymorphisms and various outcomes of HBV infection has been reported. However, the results have been inconclusive. To derive a more precise estimation of the relationship between HLA-DP polymorphisms and various outcomes of HBV infection, a meta-analysis of 62,050 subjects from 29 case-control studies was performed. We found that rs3077 and rs9277535 in HLA-DP significantly decreased HBV infection risks and increased HBV clearance possibility in a dose-dependent manner. In the subgroup analysis by ethnicity, study design and sample size, significant associations were found for these polymorphisms in almost all comparisons. Meanwhile, haplotype analyses of the two polymorphisms revealed a significant association between the combination of these alleles and HBV infection outcomes. However, no significant results were observed in HCC development. Our results further confirm that genetic variants in the HLA-DP locus are strongly associated with reduced HBV infection and increased the likelihood of spontaneous viral clearance.
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11
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Yang Y, Yan M, Yue M, Wang X, Zhang W, Li J, Li S. Prevalence of hepatitis B and knowledge about hepatitis B among migrant workers in shandong province, china: a cross-sectional study. IRANIAN RED CRESCENT MEDICAL JOURNAL 2015; 17:e26725. [PMID: 26023348 PMCID: PMC4443392 DOI: 10.5812/ircmj.17(4)2015.26725] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 01/25/2015] [Accepted: 02/16/2015] [Indexed: 01/12/2023]
Abstract
Background: China is a country with a high prevalence of hepatitis B. As a special population, migrant workers are more vulnerable to hepatitis B. Objectives: The present study was conducted to gain insight into the prevalence of hepatitis B and knowledge about hepatitis B among migrant workers in Shandong Province, China, as well as to explore a series of strategies for preventing and controlling the spread and prevalence of hepatitis B. Patients and Methods: A cross-sectional study was conducted without age restriction, in Shandong Province in China. The sample-size was determined scientifically. The study population was selected using the random multistage cluster sampling. Personal information, including sex, age, ethnicity, marital status, education level, years of duration of stay in Jinan and health insurance were obtained from 2065 migrant workers. Moreover, blood samples were collected for hepatitis B infection screening. Knowledge about hepatitis B was assessed using a self-administered questionnaire. Correct response rates were calculated. Results: Of 2065 migrant workers tested for Hepatitis B Surface Antigen (HBsAg), 167 (126 men and 41 women) tested positive for HBsAg; the overall prevalence was 8.1%. The prevalence rates in men and women were 9.6% and 5.4%, respectively. The prevalence rates in subjects 18 - 30 years old and 30 years older were 3.5% and 9.3%, respectively. There were statistically significant differences between those groups (P < 0.05). Correct response rates for the transmission of hepatitis B questions were low, especially for a question regarding whether hepatitis B can be transferred by sexual contact (36.8%) and whether it can be transferred from mothers to infants (33.9%). A total of 80.9% of migrant workers correctly responded that vaccination is effective for hepatitis B. However, 68% of migrants also had the misconception that it is necessary to receive a booster vaccination. Conclusions: The hepatitis B virus infection rate in migrant workers is higher than average infection rates in China, and these workers’ knowledge regarding hepatitis B is poor. It is urgent that an appropriate program be undertaken for the prevention and control of hepatitis B among migrant workers.
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Affiliation(s)
- Yan Yang
- Health examination Center, QiLu Hospital, Shandong University, Jinan, China
- Corresponding Author: Yan Yang, Health examination Center, QiLu Hospital, Shandong University, P. O. Box: 250012, Jinan, China. Tel: +86-53182166920, Fax: +86-53182166921, E-mail:
| | - Ming Yan
- Department of Geriatric Gastroenterology, QiLu Hospital, Shandong University, Jinan, China
| | - Meng Yue
- Department of Gastroenterology, Jinan Central Hospital, Shandong University, Jinan, China
| | | | - Wei Zhang
- Health examination Center, QiLu Hospital, Shandong University, Jinan, China
| | - Jie Li
- Health examination Center, QiLu Hospital, Shandong University, Jinan, China
| | - Shuqing Li
- Health examination Center, QiLu Hospital, Shandong University, Jinan, China
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Soleimanpour H, Safari S, Rahmani F, Ameli H, Alavian SM. The role of inhalational anesthetic drugs in patients with hepatic dysfunction: a review article. Anesth Pain Med 2015; 5:e23409. [PMID: 25789242 PMCID: PMC4350156 DOI: 10.5812/aapm.23409] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 09/26/2014] [Accepted: 12/14/2014] [Indexed: 12/27/2022] Open
Abstract
Context: Anesthetic drugs including halogenated anesthetics have been common for many years. Consequent hepatic injury has been reported in the literature. The mechanism of injury is immunoallergic. The first generation drug was halothane; it had the most toxicity when compared to other drugs. The issue becomes more important when the patient has an underlying hepatic dysfunction. Evidence Acquisition: In this paper, reputable internet databases from 1957–2014 were analyzed and 43 original articles, 3 case reports, and 3 books were studied. A search was performed based on the following keywords: inhalational anesthesia, hepatic dysfunction, halogenated anesthetics, general anesthesia in patients with hepatic diseases, and side effects of halogenated anesthetics from reliable databases. Reputable websites like PubMed and Cochrane were used for the searches. Results: In patients with hepatic dysfunction in addition to hepatic system and dramatic hemostatic dysfunction, dysfunction of cardiovascular, renal, respiratory, gastrointestinal, and central nervous systems may occur. On the other hand, exposure to inhalational halogenated anesthetics may have a negative impact (similar to hepatitis) on all aforementioned systems in addition to direct effects on liver function as well as the effects are more pronounced in halothane. Conclusions: Despite the adverse effects of inhalational halogenated anesthetics (especially halothane) on hepatic patients when necessary. The effects on all systems must be considered and the necessary preparations must be provided. These drugs are still used, if necessary, due to the presence of positive effects and advantages mentioned in other studies as well as the adverse effects of other drugs.
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Affiliation(s)
- Hassan Soleimanpour
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeid Safari
- Department of Anesthesiology, Iran University of Medical Sciences, Tehran, Iran
| | - Farzad Rahmani
- Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hoorolnesa Ameli
- Students’ Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyed Moayed Alavian
- Hepatitis B Molecular Laboratory, Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Corresponding author: Seyed Moayed Alavian, Hepatitis B Molecular Laboratory, Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran. Tel: +98-2188945186, Fax: +98-2188945188, E-mail:
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