1
|
Fernandes da Silva C, Keeshan A, Cooper C. Hepatitis B virus genotypes influence clinical outcomes: A review. CANADIAN LIVER JOURNAL 2023; 6:347-352. [PMID: 38020195 PMCID: PMC10652982 DOI: 10.3138/canlivj-2023-0003] [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] [Received: 02/09/2023] [Accepted: 03/28/2023] [Indexed: 12/01/2023]
Abstract
Hepatitis B virus (HBV) is a hepatotropic virus that affects approximately 296 million people worldwide. A crucial step to HBV replication is the transcription of its infectious DNA from its viral RNA intermediate. The production of the RNA intermediate hinges on reverse transcription, and therefore the lack of proofreading in that process commonly yields mutants and has led to nine well-described genotypes (A-I) and over 30 known sub-genotypes of the virus. The influence of genotype on HBV infection outcomes, which include fibrosis progression, cirrhosis, and hepatocellular carcinoma (HCC), remain uncertain. This review aims to analyze the influence of HBV genotype on the risk of development of these outcomes. The response to current and future HBV therapies is considered. Further study of larger and more diverse samples will hopefully resolve outstanding uncertainties.
Collapse
Affiliation(s)
| | - Alexa Keeshan
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
| | - Curtis Cooper
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
| |
Collapse
|
2
|
Jose-Abrego A, Roman S, Laguna-Meraz S, Panduro A. Host and HBV Interactions and Their Potential Impact on Clinical Outcomes. Pathogens 2023; 12:1146. [PMID: 37764954 PMCID: PMC10535809 DOI: 10.3390/pathogens12091146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 08/27/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
Hepatitis B virus (HBV) is a challenge for global health services, affecting millions and leading thousands to end-stage liver disease each year. This comprehensive review explores the interactions between HBV and the host, examining their impact on clinical outcomes. HBV infection encompasses a spectrum of severity, ranging from acute hepatitis B to chronic hepatitis B, which can potentially progress to cirrhosis and hepatocellular carcinoma (HCC). Occult hepatitis B infection (OBI), characterized by low HBV DNA levels in hepatitis B surface antigen-negative individuals, can reactivate and cause acute hepatitis B. HBV genotyping has revealed unique geographical patterns and relationships with clinical outcomes. Moreover, single nucleotide polymorphisms (SNPs) within the human host genome have been linked to several clinical outcomes, including cirrhosis, HCC, OBI, hepatitis B reactivation, and spontaneous clearance. The immune response plays a key role in controlling HBV infection by eliminating infected cells and neutralizing HBV in the bloodstream. Furthermore, HBV can modulate host metabolic pathways involved in glucose and lipid metabolism and bile acid absorption, influencing disease progression. HBV clinical outcomes correlate with three levels of viral adaptation. In conclusion, the clinical outcomes of HBV infection could result from complex immune and metabolic interactions between the host and HBV. These outcomes can vary among populations and are influenced by HBV genotypes, host genetics, environmental factors, and lifestyle. Understanding the degrees of HBV adaptation is essential for developing region-specific control and prevention measures.
Collapse
Affiliation(s)
- Alexis Jose-Abrego
- Department of Genomic Medicine in Hepatology, Civil Hospital of Guadalajara, “Fray Antonio Alcalde”, Guadalajara 44280, Mexico; (A.J.-A.); (S.R.); (S.L.-M.)
- Health Sciences Center, University of Guadalajara, Guadalajara 44340, Mexico
| | - Sonia Roman
- Department of Genomic Medicine in Hepatology, Civil Hospital of Guadalajara, “Fray Antonio Alcalde”, Guadalajara 44280, Mexico; (A.J.-A.); (S.R.); (S.L.-M.)
- Health Sciences Center, University of Guadalajara, Guadalajara 44340, Mexico
| | - Saul Laguna-Meraz
- Department of Genomic Medicine in Hepatology, Civil Hospital of Guadalajara, “Fray Antonio Alcalde”, Guadalajara 44280, Mexico; (A.J.-A.); (S.R.); (S.L.-M.)
- Health Sciences Center, University of Guadalajara, Guadalajara 44340, Mexico
| | - Arturo Panduro
- Department of Genomic Medicine in Hepatology, Civil Hospital of Guadalajara, “Fray Antonio Alcalde”, Guadalajara 44280, Mexico; (A.J.-A.); (S.R.); (S.L.-M.)
- Health Sciences Center, University of Guadalajara, Guadalajara 44340, Mexico
| |
Collapse
|
3
|
Marchio A, Sitbounlang P, Deharo E, Paboriboune P, Pineau P. Concealed for a Long Time on the Marches of Empires: Hepatitis B Virus Genotype I. Microorganisms 2023; 11:2204. [PMID: 37764048 PMCID: PMC10535388 DOI: 10.3390/microorganisms11092204] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/18/2023] [Accepted: 08/28/2023] [Indexed: 09/29/2023] Open
Abstract
Genotype I, the penultimate HBV genotype to date, was granted the status of a bona fide genotype only in the XXIst century after some hesitations. The reason for these hesitations was that genotype I is a complex recombinant virus formed with segments from three original genotypes, A, C, and G. It was estimated that genotype I is responsible for only an infinitesimal fraction (<1.0%) of the chronic HBV infection burden worldwide. Furthermore, most probably due to its recent discovery and rarity, the natural history of infection with genotype I is poorly known in comparison with those of genotypes B or C that predominate in their area of circulation. Overall, genotype I is a minor genotype infecting ethnic minorities. It is endemic to the Southeast Asian Massif or Eastern Zomia, a vast mountainous or hilly region of 2.5 million km2 spreading from Eastern India to China, inhabited by a little more than 100 million persons belonging primarily to ethnic minorities speaking various types of languages (Tibeto-Burman, Austroasiatic, and Tai-Kadai) who managed to escape the authority of central states during historical times. Genotype I consists of two subtypes: I1, present in China, Laos, Thailand, and Vietnam; and I2, encountered in India, Laos, and Vietnam.
Collapse
Affiliation(s)
- Agnès Marchio
- Institut Pasteur, Université Paris Cité, Unité “Organisation Nucléaire et Oncogenèse”, INSERM U993, 75015 Paris, France;
| | - Philavanh Sitbounlang
- Centre d’Infectiologie Lao-Christophe Mérieux (CILM), Vientiane 3888, Laos; (P.S.); (P.P.)
| | - Eric Deharo
- MIVEGEC, Université Montpellier, CNRS, IRD, 34394 Montpellier, France;
| | - Phimpha Paboriboune
- Centre d’Infectiologie Lao-Christophe Mérieux (CILM), Vientiane 3888, Laos; (P.S.); (P.P.)
| | - Pascal Pineau
- Institut Pasteur, Université Paris Cité, Unité “Organisation Nucléaire et Oncogenèse”, INSERM U993, 75015 Paris, France;
| |
Collapse
|
4
|
Toyé RM, Loureiro CL, Jaspe RC, Zoulim F, Pujol FH, Chemin I. The Hepatitis B Virus Genotypes E to J: The Overlooked Genotypes. Microorganisms 2023; 11:1908. [PMID: 37630468 PMCID: PMC10459053 DOI: 10.3390/microorganisms11081908] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/17/2023] [Accepted: 07/24/2023] [Indexed: 08/27/2023] Open
Abstract
Hepatitis B virus (HBV) genotypes E to J are understudied genotypes. Genotype E is found almost exclusively in West Africa. Genotypes F and H are found in America and are rare in other parts of the world. The distribution of genotype G is not completely known. Genotypes I and J are found in Asia and probably result from recombination events with other genotypes. The number of reported sequences for HBV genotypes E to J is small compared to other genotypes, which could impact phylogenetic and pairwise distance analyses. Genotype F is the most divergent of the HBV genotypes and is subdivided into six subgenotypes F1 to F6. Genotype E may be a recent genotype circulating almost exclusively in sub-Saharan Africa. Genotype J is a putative genotype originating from a single Japanese patient. The paucity of data from sub-Saharan Africa and Latin America is due to the under-representation of these regions in clinical and research cohorts. The purpose of this review is to highlight the need for further research on HBV genotypes E to J, which appear to be overlooked genotypes.
Collapse
Affiliation(s)
- Rayana Maryse Toyé
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1052, Centre de Recherche en Cancérologie de Lyon (CRCL), 151 Cours Albert Thomas, 69003 Lyon, France; (R.M.T.); (F.Z.)
| | - Carmen Luisa Loureiro
- Laboratorio de Virología Molecular, Centro de Microbiología y Biología Celular (CMBC), Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas 1020A, Venezuela; (C.L.L.); (R.C.J.)
| | - Rossana Celeste Jaspe
- Laboratorio de Virología Molecular, Centro de Microbiología y Biología Celular (CMBC), Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas 1020A, Venezuela; (C.L.L.); (R.C.J.)
| | - Fabien Zoulim
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1052, Centre de Recherche en Cancérologie de Lyon (CRCL), 151 Cours Albert Thomas, 69003 Lyon, France; (R.M.T.); (F.Z.)
| | - Flor Helene Pujol
- Laboratorio de Virología Molecular, Centro de Microbiología y Biología Celular (CMBC), Instituto Venezolano de Investigaciones Científicas (IVIC), Caracas 1020A, Venezuela; (C.L.L.); (R.C.J.)
- Collégium de Lyon, Institut d’Etudes Avancées, Université Lyon 2, 69007 Lyon, France
| | - Isabelle Chemin
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1052, Centre de Recherche en Cancérologie de Lyon (CRCL), 151 Cours Albert Thomas, 69003 Lyon, France; (R.M.T.); (F.Z.)
| |
Collapse
|
5
|
Anabire NG, Quaye O, Helegbe GK. Circulation of multiple hepatitis B virus genotypes in individual pregnant women seeking antenatal care in northern Ghana. Virol J 2023; 20:149. [PMID: 37443015 PMCID: PMC10347747 DOI: 10.1186/s12985-023-02110-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 06/30/2023] [Indexed: 07/15/2023] Open
Abstract
BACKGROUND Identification and monitoring of HBV genotype variations is important, since that can help forecast the likelihood of developing serious liver disease and how well patients respond to antiviral medication. Given that HBV genotyping tests are not widely available in our healthcare system, this study characterized HBV genotypes in pregnant women seeking prenatal treatment in northern Ghana. METHOD By a cross-sectional approach, 2071 pregnant women seeking antenatal care in health facilities in northern Ghana were screened for HBV infection using hepatitis B surface antigen (HBsAg) rapid diagnostic test kit. The women were aged between 17 and 41 years, were of varying gravidae (primigravidae and multigravidae) and gestational age (first, second and third trimesters). A confirmatory PCR assay was used to detect HBsAg, and the distribution of HBV genotypes was determined using a nested PCR assay. RESULTS Three HBV genotypes (A, D and E) were detected among the pregnant women, of which 175 (91.6%) had genotype E, 9 (4.7%) had mixed genotypes A and E, 5 (2.6%) had mixed genotypes D and E, and 2 (1.1) had mixed genotypes A, D and E. The proportions of women with the different HBV genotypes were independent of age (p = 0.925), gravidity (p = 0.193, χ2 = 4.729) and gestational age (p = 0.227, χ2 = 8.152). CONCLUSION This study for the first-time characterized circulating HBV genotypes in pregnant women in northern Ghana, which reveals genotypes A and D are found in mixed infections with genotype E. The findings have clinical implications on the management of chronic HBV infection among pregnant women in northern Ghana.
Collapse
Affiliation(s)
- Nsoh Godwin Anabire
- West African Centre for Cell Biology of Infectious Pathogens (WACCBIP), Department of Biochemistry, Cell & Molecular Biology, University of Ghana, P. O. Box LG 54, Legon- Accra, Ghana
- Department of Biochemistry & Molecular Medicine, School of Medicine, University for Development studies, P. O. Box TL 1883, Tamale, Ghana
| | - Osbourne Quaye
- West African Centre for Cell Biology of Infectious Pathogens (WACCBIP), Department of Biochemistry, Cell & Molecular Biology, University of Ghana, P. O. Box LG 54, Legon- Accra, Ghana
| | - Gideon Kofi Helegbe
- Department of Biochemistry & Molecular Medicine, School of Medicine, University for Development studies, P. O. Box TL 1883, Tamale, Ghana
| |
Collapse
|
6
|
A novel subgenotype I3 of hepatitis B virus in Guangxi, China: a 15-year follow-up study. Virus Genes 2023; 59:359-369. [PMID: 36841897 DOI: 10.1007/s11262-023-01980-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 02/13/2023] [Indexed: 02/27/2023]
Abstract
Genotype I of hepatitis B virus (HBV) was proposed recently following sequencing of complete HBV genomes from Vietnam and Laos. However, its long-term molecular evolution is unknown. The objectives of this study were to study the molecular evolution of this genotype from an asymptomatic HBsAg carrier from the Long An cohort over a 15-year period was studied using both NGS and clone-based sequencing. The number of complete genome sequences obtained in 2004, 2007, 2013, and 2019 are 17, 20, 19, and 10, respectively. All strains belong to subgenotype I1, except for six (five from 2007 and one from 2019) and 8 further strains from 2007 which form a cluster branching out from other subgenotype I sequences, supported by a 100% bootstrap value. Based on complete genome sequences, all of the estimated intragroup nucleotide divergence values between these strains and HBV subgenotypes I1-I2 exceed 4%. These strains are recombinants between genotype I1 and subgenotype C but the breakpoints vary. The median intrahost viral evolutionary rate in this carrier was 3.88E-4 substitutions per site per year. The Shannon entropy (Sn) ranged from 0.55 to 0.88 and the genetic diversity, D, ranged from 0.0022 to 0.0041. In conclusion, our data provide evidence of novel subgenotypes. Considering that the 8 strains disappeared after 2007, while one of the 6 strains appears again in 2019, we propose these 6 strains as a new subgenotype, provisionally designated HBV subgenotype I3 and the 8 strains as aberrant genotype.
Collapse
|
7
|
Sitbounlang P, Deharo E, Latthaphasavang V, Marchio A, Soukhsakhone C, Soinxay V, Mayxay M, Steenkeste N, Vincelot P, Bertani S, Palamy S, Paboriboune P, Pineau P. Estimating the burden of hepatitis B virus infection in Laos between 2020 and 2021: A cross-sectional seroprevalence survey. EClinicalMedicine 2022; 52:101582. [PMID: 35923426 PMCID: PMC9340506 DOI: 10.1016/j.eclinm.2022.101582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/30/2022] [Accepted: 07/07/2022] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Laos is considered highly endemic for persistent infection with hepatitis B virus (HBV). To eliminate this burden, it has gradually implemented universal anti-hepatitis B immunisation of newborns over the past two decades. METHODS Using VIKIA® HBsAg, a rapid test for the qualitative detection of the HBV surface antigen, we conducted between Sep 1st, 2020 and Aug 31st, 2021 the largest prospective prevalence survey ever in Laos. This survey included blood donors (BD, n = 42,277), patients attending care in capital and provincial hospitals (n = 37,347) including attending mothers (n = 20,548), HIV-infected patients (n = 7439, recruited from 2009 to 2020), students from the Health Sciences University (n = 609), and outpatients (n = 350) coming for diagnosis at the Center Infectiology Lao-Christophe Mérieux in Vientiane. In total, 88,022 persons were tested, representing approximately 1.22% of the national population. To reach a reasonable estimate of HBsAg prevalence in Laos, we segmented the population according to three variables, age (≤20 years as a cut-off), sex, and geographical origin. BD values were used to estimate HBsAg prevalence in patients aged <20 while hospital survey prevalence was used to estimate the prevalence in those aged older than 20 years. FINDINGS We observed an HBsAg seroprevalence ranging from 2.6% in blood donors to 8.0% in HIV-infected patients. In BD, men were significantly more at risk to be carriers than women (RR = 1.2, P = 0.00063). For BD, attending mothers, or HIV-infected patients, HBsAg was significantly more prevalent in northern Laos (5.1-8.4%) than in central (2.0-8.1%) or southern parts of the country (2.2-6.9%), thereby delineating a North-to-South gradient. INTERPRETATION We considered that HBsAg prevalence probably ranges between 5.0% and 6.0% of the total population. Thus, we consider that Laos may no longer be highly endemic for chronic HBV infection but rather a country with intermediate endemicity. FUNDING The funding sources were the Agence Universitaire de la Francophonie, the French Government, the French Institute for Sustainable Development (IRD), and European Union's Horizon 2020 Marie Sklodowska-Curie Actions (MSCA) - Research and Innovation Staff Exchange - (RISE) under grant agreement N° 823935.
Collapse
Affiliation(s)
- Philavanh Sitbounlang
- Center Infectiology Lao-Christophe Mérieux (CILM), Ministry of Health, Samsenthai Road, Sisattanak District, Vientiane 3888, Laos
- École Doctorale « Biologie-Santé-Biotechnologie » (BSB), Université Toulouse III Paul Sabatier, Toulouse, France
| | - Eric Deharo
- Institut de Recherche pour le Développement, Ban Naxai, Saysettha District, Vientiane 5992, Laos
- Corresponding authors.
| | | | - Agnès Marchio
- Unité “Organisation Nucléaire et Oncogenèse”, INSERM U993, Institut Pasteur, Paris, France
| | | | - Vonephet Soinxay
- National Blood Transfusion Center, Lao Red Cross, Phai Nam street, Vientiane, Laos
| | - Mayfong Mayxay
- Ministry of Health, University of Health Sciences, Vientiane, Laos
| | | | | | - Stéphane Bertani
- IRD, UPS, UMR 152 PHARMADEV, Université de Toulouse, Toulouse, France
- International Joint Laboratory for Molecular Anthropological Oncology (LOAM), Lima, Peru
| | - Sysay Palamy
- Faculty of Pharmacy of Vientiane, University of Health Sciences, Laos
| | - Phimpha Paboriboune
- Center Infectiology Lao-Christophe Mérieux (CILM), Ministry of Health, Samsenthai Road, Sisattanak District, Vientiane 3888, Laos
| | - Pascal Pineau
- Unité “Organisation Nucléaire et Oncogenèse”, INSERM U993, Institut Pasteur, Paris, France
- Corresponding authors.
| |
Collapse
|
8
|
Abstract
Hepatitis B was discovered by researchers who were investigating jaundice associated with blood transfusions as well as parenterally administered medications. Through trial and error, the HBV was identified. There are specific tests that detect HBV infection, whether it is a previous exposure or active infection. The various HBV serologies are reviewed in this work as well. Hepatitis B surface antigen has emerged as a tool in defining treatment endpoint and its significance is reviewed. HBV genotypes are distributed uniquely throughout the world, in particular, genotype C is associated with higher rates of hepatocellular carcinoma. Various HBV genotypes and their impact on the clinical course are discussed. The relationship of HBV serologies and HBV DNA to disease progression is outlined. There are specific recommendations on monitoring those infected with HBV and this is reviewed here. HBV mutations have an impact on the disease course and those of significance are also discussed.
Collapse
|
9
|
Marlet J, Lier C, Roch E, Moreau A, Combe B, Handala L, Lefeuvre S, Maugey M, Elkrief L, d'Alteroche L, Potier P, Brand D, Gaudy-Graffin C. Evolution and phenotypic characterization of whole HBV genome in compliant patients experiencing unexplained entecavir treatment failure. Antiviral Res 2021; 192:105106. [PMID: 34214504 DOI: 10.1016/j.antiviral.2021.105106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 04/29/2021] [Accepted: 05/31/2021] [Indexed: 12/20/2022]
Abstract
Entecavir treatment failure can be observed in compliant patients despite an absence of detectable resistance mutations by Pol/RT Sanger sequencing. We hypothesized that these unexplained treatment failures could rely on other mechanisms of viral resistance, especially on mutations selected outside of the Pol/RT domain. Partial virological response to entecavir was observed in three patients treated with immunosuppressive drugs, without selection of Pol/RT resistance mutations. Mutations selected in the whole HBV genome during entecavir treatment and potentially associated with resistance were searched for using deep sequencing and characterized using a phenotypic resistance assay. Mutations Q206K (pre-core/core), Q120K (pre-S1/pre-S2, T-cell epitope) and A300E (spacer domain) were selected during entecavir treatment in patient #1 but were not associated with an increased level of resistance to entecavir or an increase in HBV replication capacity. Core promoter mutations T1753G, A1762T and G1764A were present as major mutations before and after treatment in patient #1. HBs Ag immune escape mutations were present as major mutations before and after treatment in patients #2 (sK122R, sT126I, sP127S and sG145R) and #3 (sM133I). We demonstrated that PVR to entecavir does not require selection of any resistance mutation in the whole HBV genome. Our results demonstrate that major mutations can be selected outside of the Pol/RT domain before or during entecavir treatment. These mutations could contribute to entecavir treatment failure by other mechanisms than an increased level of resistance.
Collapse
Affiliation(s)
- Julien Marlet
- INSERM U1259, Université de Tours et CHRU de Tours, France; Service de Bactériologie-Virologie-Hygiène, CHRU de Tours, France.
| | - Clément Lier
- INSERM U1259, Université de Tours et CHRU de Tours, France; Service de Bactériologie-Virologie-Hygiène, CHRU de Tours, France
| | | | - Alain Moreau
- INSERM U1259, Université de Tours et CHRU de Tours, France
| | - Benjamin Combe
- INSERM U1259, Université de Tours et CHRU de Tours, France
| | - Lynda Handala
- INSERM U1259, Université de Tours et CHRU de Tours, France
| | | | - Morgan Maugey
- INSERM U1259, Université de Tours et CHRU de Tours, France
| | - Laure Elkrief
- Service D'Hépato-gastroentérologie, CHRU de Tours, France
| | | | - Pascal Potier
- Service D'Hépato-gastroentérologie, CHR D'Orléans, France
| | - Denys Brand
- INSERM U1259, Université de Tours et CHRU de Tours, France; Service de Bactériologie-Virologie-Hygiène, CHRU de Tours, France
| | - Catherine Gaudy-Graffin
- INSERM U1259, Université de Tours et CHRU de Tours, France; Service de Bactériologie-Virologie-Hygiène, CHRU de Tours, France
| |
Collapse
|
10
|
Locarnini SA, Littlejohn M, Yuen LKW. Origins and Evolution of the Primate Hepatitis B Virus. Front Microbiol 2021; 12:653684. [PMID: 34108947 PMCID: PMC8180572 DOI: 10.3389/fmicb.2021.653684] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 04/21/2021] [Indexed: 12/14/2022] Open
Abstract
Recent interest in the origins and subsequent evolution of the hepatitis B virus (HBV) has strengthened with the discovery of ancient HBV sequences in fossilized remains of humans dating back to the Neolithic period around 7,000 years ago. Metagenomic analysis identified a number of African non-human primate HBV sequences in the oldest samples collected, indicating that human HBV may have at some stage, evolved in Africa following zoonotic transmissions from higher primates. Ancestral genotype A and D isolates were also discovered from the Bronze Age, not in Africa but rather Eurasia, implying a more complex evolutionary and migratory history for HBV than previously recognized. Most full-length ancient HBV sequences exhibited features of inter genotypic recombination, confirming the importance of recombination and the mutation rate of the error-prone viral replicase as drivers for successful HBV evolution. A model for the origin and evolution of HBV is proposed, which includes multiple cross-species transmissions and favors subsequent recombination events that result in a pathogen and can successfully transmit and cause persistent infection in the primate host.
Collapse
Affiliation(s)
- Stephen A Locarnini
- Victorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital, The Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Margaret Littlejohn
- Victorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital, The Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| | - Lilly K W Yuen
- Victorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital, The Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia
| |
Collapse
|
11
|
Farooq A, Waheed U, Saba N, Kaleem M, Majeed N, Wazeer A, Cheema NA, Ahmed S, Arshad M. Molecular and genetic characterization of hepatitis B virus among multitransfused thalassaemia patients in Islamabad, Pakistan. J Family Med Prim Care 2021; 10:998-1002. [PMID: 34041111 PMCID: PMC8138360 DOI: 10.4103/jfmpc.jfmpc_1880_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/24/2020] [Accepted: 12/09/2020] [Indexed: 11/16/2022] Open
Abstract
Background: Hepatitis B virus (HBV) is the aetiological agent of transfusion-transmitted hepatitis globally. Beta thalassaemia major individuals are at greater risk of contracting HBV infection due to multiple blood transfusions required for the medical management of these patients. Based on HBV genetic variability, it is divided into 10 genotypes. The determination of HBV genotypes has significant implications for clinical management and treatment regimens. Aim: This study was performed to assess the HBV epidemiology and circulating genotypes in multi-transfused β-thalassemia major patients with the aim to be considered while formulating the treatment pattern taking into account particular needs of thalassaemia patients. Materials and Methods: This study was performed from September 2018 to June 2019, at the Department of Pathology and Transfusion Medicine, Shaheed Zulfiqar Ali Bhutto (SZAB) Medical University, Islamabad. A total of 2,260 thalassaemia patients were enrolled in the study. The study was endorsed by the Ethics Committee of the SZAB Medical University, Islamabad. The samples were serologically screened for HBsAg on the LIAISON® XL Murex HBsAg Quant assay (DiaSorin S.p.A., Italy) a chemiluminescence based immunoassay (CLIA). HBV quantitative PCR kit was used to measure the HBV DNA in serum samples. The HBV genotypes were determined using universal primers targeting the P1 and S1 region amplification. Results: Of 2,260 thalassaemia patients, 64.6% were males while 35.4% were females. The HBsAg was identified in 98 individuals (4.33%). The PCR analysis was done for these 98 patients and in this cohort, genotype D was 59.18% (n = 58), genotype A was 21.42% (n = 21) while genotype C was 19.38% (n = 19). Conclusion: The determination of HBV genotypes in the multi-transfused patients is key to the effective management of chronic HBV patients as the severity and course of the disease is dependent on a specific type of genotypes. Quality assured screening of donated blood will prevent the incidence of HBV in thalassaemia patients.
Collapse
Affiliation(s)
- Ahmad Farooq
- Department of Biological Sciences, International Islamic University, Islamabad, Pakistan.,Department of Pathology and Transfusion Medicine, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, Pakistan
| | - Usman Waheed
- Department of Pathology and Transfusion Medicine, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, Pakistan.,Islamabad Blood Transfusion Authority, Ministry of National Health Services, Government of Pakistan
| | - Noore Saba
- Peshawar Regional Blood Centre, Department of Health, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Kaleem
- Department of Pathology, Mohtarma Benazir Bhutto Shaheed Medical College, Mirpur, AJK, Pakistan
| | - Najma Majeed
- Department of Health, College of Medical Technology, Mirpur, AJK, Pakistan
| | - Akhlaaq Wazeer
- Department of Biological Sciences, International Islamic University, Islamabad, Pakistan.,Department of Pathology and Transfusion Medicine, Divisional Headquarters Teaching Hospital, Mirpur, AJK, Pakistan
| | - Naila Arif Cheema
- Department of Biology, National University of Technology, Islamabad, Pakistan
| | - Saeed Ahmed
- Department of Blood Bank, Prince Mohammed bin Abdulaziz Hospital, Riyadh, Saudi Arabia
| | - Muhammad Arshad
- Department of Biological Sciences, International Islamic University, Islamabad, Pakistan
| |
Collapse
|
12
|
Ohashi T, Kuyama H. Magnetic particle transport through organogel - an application to DNA extraction. Anal Biochem 2020; 611:113932. [PMID: 32891594 DOI: 10.1016/j.ab.2020.113932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/18/2020] [Accepted: 08/26/2020] [Indexed: 12/23/2022]
Abstract
An observation that magnetic particles are transported through organogel encouraged us to investigate its feasibility of liquid-phase displacement in DNA extraction using magnetic particles. Organogel for this study was prepared from a gelator, 12-hydroxystearic acid (12-HSA), and an apolar solvent, methylphenylsilicone oil. The organogel is a gel-like solid material with hydrophobic and elastic properties. These properties, hydrophobicity, and elasticity were demonstrated to be advantageous for liquid compartmentalization and efficient liquid-phase displacement. The extracted DNA with using the organogel device was successfully detected off-chip by conventional real-time PCR.
Collapse
Affiliation(s)
- Tetsuo Ohashi
- Technology Research Laboratory, Shimadzu Corporation, 3-9-4 Hikaridai, Seika-cho, Soraku-gun, Kyoto, 619-0237, Japan.
| | - Hiroki Kuyama
- Technology Research Laboratory, Shimadzu Corporation, 3-9-4 Hikaridai, Seika-cho, Soraku-gun, Kyoto, 619-0237, Japan
| |
Collapse
|
13
|
Datta S. Excavating new facts from ancient Hepatitis B virus sequences. Virology 2020; 549:89-99. [PMID: 32858309 DOI: 10.1016/j.virol.2020.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 08/02/2020] [Accepted: 08/07/2020] [Indexed: 12/16/2022]
Abstract
Recently, two independent studies discovered 15 ancient Hepatitis B virus (aHBV) sequences, of which 7 dated back to the Neolithic age (NA) and the Bronze Age (BA). In the present research, all the available aHBV sequences were collectively re-analysed with reference to extant HBV diversity to understand the role of these aHBV genotypes in evolution of extant HBV genetic diversity. Several intergenotype recombination events were documented, which corroborated well with population admixture and ancient human migration. Present analyses suggested replacement of HBV genotype associated with early Neolithic European farming cultures by the migrating steppe people, during Bronze Age Steppe migration. Additionally, detailed analyses of recombinations revealed evolution of a number of extant genotypes and suggested their possible site of origin. Through this manuscript, novel and important findings of the analyses are communicated.
Collapse
Affiliation(s)
- Sibnarayan Datta
- Molecular Virology Laboratory, Entomology & Biothreat Management Division, Defence Research Laboratory, Defence R&D Organization (DRDO), PO Bag 02, Tezpur HPO, Assam, 784001, India.
| |
Collapse
|
14
|
Lazarevic I, Banko A, Miljanovic D, Cupic M. Biological features of hepatitis B virus strains associated with fulminant hepatitis. Future Virol 2020. [DOI: 10.2217/fvl-2020-0011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Accumulating evidence suggests that hepatitis B virus (HBV) biological features may influence the course and clinical manifestations of infection and possibly the development of fulminant hepatitis (FH). Since HBV is not a cytocidal virus, virus-induced liver damage results from an interplay between the virus replication and the host's defense. Therefore, viral factors contributing to enhanced replication, induction of a stronger immune attack or apoptosis of hepatocytes could be crucial in development of FH. Numerous mutations in basal core promoter, pre-C, C and S regions of the HBV genome contribute to development of FH by different mechanisms, including enhanced viral replication, the loss of a decoy for immune response, unbalanced expression of viral proteins and retention of unprocessed cytotoxic proteins in hepatocytes.
Collapse
Affiliation(s)
- Ivana Lazarevic
- Institute of Microbiology & Immunology, Faculty of Medicine, University of Belgrade, Dr Subotica 1, 11000 Belgrade, Serbia
| | - Ana Banko
- Institute of Microbiology & Immunology, Faculty of Medicine, University of Belgrade, Dr Subotica 1, 11000 Belgrade, Serbia
| | - Danijela Miljanovic
- Institute of Microbiology & Immunology, Faculty of Medicine, University of Belgrade, Dr Subotica 1, 11000 Belgrade, Serbia
| | - Maja Cupic
- Institute of Microbiology & Immunology, Faculty of Medicine, University of Belgrade, Dr Subotica 1, 11000 Belgrade, Serbia
| |
Collapse
|
15
|
Ko K, Takahashi K, Nagashima S, Yamamoto C, Ork V, Sugiyama A, Akita T, Ohisa M, Chuon C, Hossain MS, Mao B, Tanaka J. Existence of hepatitis B virus surface protein mutations and other variants: demand for hepatitis B infection control in Cambodia. BMC Infect Dis 2020; 20:305. [PMID: 32334529 PMCID: PMC7183719 DOI: 10.1186/s12879-020-05025-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 04/12/2020] [Indexed: 12/16/2022] Open
Abstract
Background This study aimed to detect Hepatitis B virus (HBV) genome sequences and their variants as of nationwide scale using dried blood spot (DBS) samples and to provide up-to-date reference data for infection control and surveillance in Cambodia. Method Among 2518 children age 5–7 years and their 2023 mothers participated in 2017 Cambodia nationwide sero-survey on hepatitis B surface antigen (HBsAg) prevalence using multistage random sampling strategy, 95 mothers and 13 children positive to HBsAg were included in this study. HBV DNA was extracted from DBS, then performed polymerase chain reaction. HBV genotypes and potential variants were examined by partial and full length genomic analysis. Results HBsAg positive rate was 4.7% (95/2023) in mothers and 0.52% (13/2518) in their children. Genotype C (80.49%) was abundantly found throughout the whole Cambodia whilst genotype B (19.51%) was exclusively found in regions bordering Vietnam. S gene mutants of HBV were found in 24.29% of mothers and 16.67% of children with HBV DNA positive sera. Full-length genome analysis revealed the homology of 99.62–100% in each mother-child pair. Genotype B was clarified to recombinant genotype B4/C2 and B2/C2. Double (48.39%) and combination mutation (32.26%) were observed in core promoter region of HBV C1 strains. Conclusions This study showed the capable of DBS for large-scale molecular epidemiological study of HBV in resource limited countries. Full-genome sequences yield the better understanding of sub-genotypes, their variants and the degree of homology between strains isolated from mother-child pairs calls for effective strategies on prevention, control and surveillance of mother-to-child HBV transmission in Cambodia.
Collapse
Affiliation(s)
- Ko Ko
- Department of Epidemiology, Infectious Disease Control and Prevention, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan; 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Kazuaki Takahashi
- Department of Epidemiology, Infectious Disease Control and Prevention, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan; 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Shintaro Nagashima
- Department of Epidemiology, Infectious Disease Control and Prevention, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan; 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Chikako Yamamoto
- Department of Epidemiology, Infectious Disease Control and Prevention, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan; 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Vichit Ork
- National Immunization Programme, Ministry of Health, 151-152 Kampuchea Krom Avenue, Phonm Penh, Cambodia
| | - Aya Sugiyama
- Department of Epidemiology, Infectious Disease Control and Prevention, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan; 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Tomoyuki Akita
- Department of Epidemiology, Infectious Disease Control and Prevention, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan; 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Masayuki Ohisa
- Department of Epidemiology, Infectious Disease Control and Prevention, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan; 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Channarena Chuon
- Department of Epidemiology, Infectious Disease Control and Prevention, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan; 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Md Shafiqul Hossain
- Expanded Programme on Immunization, World Health Organization Country Office, Cambodia; 61-64, Preah Norodom Blvd (St 306), Sangkat Boeung Keng Kang I, Khan Chamkamom, Phnom Penh, Cambodia
| | - Bunsoth Mao
- University of Health Sciences, 73 Monivong Boulevard, Phnom Penh, Cambodia
| | - Junko Tanaka
- Department of Epidemiology, Infectious Disease Control and Prevention, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan; 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| |
Collapse
|
16
|
McNaughton AL, Revill PA, Littlejohn M, Matthews PC, Ansari MA. Analysis of genomic-length HBV sequences to determine genotype and subgenotype reference sequences. J Gen Virol 2020; 101:271-283. [PMID: 32134374 PMCID: PMC7416611 DOI: 10.1099/jgv.0.001387] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 01/08/2020] [Indexed: 12/11/2022] Open
Abstract
Hepatitis B virus (HBV) is a diverse, partially double-stranded DNA virus, with 9 genotypes (A-I), and a putative 10th genotype (J), characterized thus far. Given the broadening interest in HBV sequencing, there is an increasing requirement for a consistent, unified approach to HBV genotype and subgenotype classification. We set out to generate an updated resource of reference sequences using the diversity of all genomic-length HBV sequences available in public databases. We collated and aligned genomic-length HBV sequences from public databases and used maximum-likelihood phylogenetic analysis to identify genotype clusters. Within each genotype, we examined the phylogenetic support for currently defined subgenotypes, as well as identifying well-supported clades and deriving reference sequences for them. Based on the phylogenies generated, we present a comprehensive set of HBV reference sequences at the genotype and subgenotype level. All of the generated data, including the alignments, phylogenies and chosen reference sequences, are available online (https://doi.org/10.6084/m9.figshare.8851946) as a simple open-access resource.
Collapse
Affiliation(s)
- Anna L. McNaughton
- Nuffield Department of Medicine, Peter Medawar Building for Pathogen Research, South Parks Road, Oxford OX1 3SY, UK
| | - Peter A. Revill
- Victorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Australia
| | - Margaret Littlejohn
- Victorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital at the Peter Doherty Institute for Infection and Immunity, Melbourne, Australia
- Department of Microbiology and Immunology, University of Melbourne, Melbourne, Australia
| | - Philippa C. Matthews
- Nuffield Department of Medicine, Peter Medawar Building for Pathogen Research, South Parks Road, Oxford OX1 3SY, UK
- Department of Infectious Diseases and Microbiology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK
- Oxford NIHR Biomedical Research Centre, John Radcliffe Hospital, Headley Way, Oxford OX3 9DU, UK
| | - M. Azim Ansari
- Wellcome Centre for Human Genetics, Roosevelt Drive, Oxford OX3 7BN, UK
| |
Collapse
|
17
|
Rossotti R, Puoti M. Sexually Transmitted Hepatitis. Sex Transm Infect 2020. [DOI: 10.1007/978-3-030-02200-6_13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
18
|
A novel hepatitis B virus recombinant genotype D4/E identified in a South African population. Heliyon 2019; 5:e01477. [PMID: 31008405 PMCID: PMC6453802 DOI: 10.1016/j.heliyon.2019.e01477] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 03/08/2019] [Accepted: 04/01/2019] [Indexed: 12/14/2022] Open
Abstract
Background Genetic diversity is a characteristic trait of the hepatitis B virus (HBV) and has been associated with different clinical outcomes. In South Africa, HBV infection is a major public health concern. Most HBV infections are caused by genotype A strains. However rare cases of infection with HBV genotype D have been reported. The purpose of this study was to investigate the molecular characteristics of a rare HBV subgenotype D4 isolate. Methods The full-length genome of isolate ZADGM6964 was amplified in a one-step polymerase chain reaction. The amplified product was purified and cloned into a pGEM®-T Easy Vector System to investigate the genetic diversity of the viral quasi-populations. The primary isolate and clones were then directly sequenced and analysed using an array of bioinformatics software. Results Phylogenetic analysis showed that the primary isolate and cloned sequences formed a monophyletic cluster away from subgenotype D4 reference strains. Further recombination analysis revealed that isolate ZADGM6964 was in fact a D4/E recombinant strain with breakpoints identified within the X and overlapping pre-Core/Core open reading frames with a >70% bootstrap confidence level. The recombinant genotype D4/E was found to be unique from other D/E strains archived in the genetic database, GenBank. Conclusion This study represents the first ever report on the isolation and molecular characterization of an HBV D4/E recombinant strain in South Africa. The findings provide evidence of further HBV genetic diversity in South Africa than has been previously reported.
Collapse
|
19
|
Holzmayer V, Hance R, Defechereux P, Grant R, Kuhns MC, Cloherty G, Rodgers MA. Identification of hepatitis B virus genotype I in Thailand. J Med Virol 2019; 91:717-721. [PMID: 30351478 PMCID: PMC6618046 DOI: 10.1002/jmv.25346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 10/16/2018] [Indexed: 12/27/2022]
Abstract
The rare hepatitis B virus genotype I (HBV-I) classification includes complex A/G/C/U recombinants identified amongst the individuals from China, India, Laos, and Vietnam. Herein we report the first HBV-I specimen from Thailand, with detectable HBsAg despite a 10-amino-acid truncation. This HBV-I genome has a similar recombinant pattern to reference strains, including a C region that branches basal to references, suggesting a premodern era recombination event gave rise to HBV-I. With an average sequence divergence from other genotypes ranging from 7.66% (standard deviation [SD], 0.42%; C) to 14.27% (SD, 0.31%; H), this new genome supports the HBV-I classification as a unique genotype.
Collapse
Affiliation(s)
- Vera Holzmayer
- Abbott Laboratories, Infectious Disease Research, Abbott ParkIllinois
| | - Robert Hance
- University of California San FranciscoSan FranciscoCalifornia
| | | | - Robert Grant
- University of California San FranciscoSan FranciscoCalifornia
| | - Mary C. Kuhns
- Abbott Laboratories, Infectious Disease Research, Abbott ParkIllinois
| | - Gavin Cloherty
- Abbott Laboratories, Infectious Disease Research, Abbott ParkIllinois
| | - Mary A. Rodgers
- Abbott Laboratories, Infectious Disease Research, Abbott ParkIllinois
| |
Collapse
|
20
|
Norder H, Twagirumugabe T, Said J, Tian Y, Tang KW, Lindh M. High Frequency of Either Altered Pre-Core StartCodon or Weakened Kozak Sequence in the CorePromoter Region in Hepatitis B Virus A1 Strainsfrom Rwanda. Genes (Basel) 2019; 10:genes10030182. [PMID: 30813638 PMCID: PMC6471190 DOI: 10.3390/genes10030182] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 02/19/2019] [Accepted: 02/20/2019] [Indexed: 12/11/2022] Open
Abstract
Hepatitis B virus (HBV) is endemic in Rwanda and is a major etiologic agent for chronic liver disease in the country. In a previous analysis of HBV strains from Rwanda, the S genes of most strains segregated into one single clade of subgenotype, A1. More than half (55%) of the anti-HBe positive individuals were viremic. In this study, 23 complete HBV genomes and the core promoter region (CP) from 18 additional strains were sequenced. Phylogenetic analysis of complete genomes confirmed that most Rwandan strain formed a single unique clade, within subgenotype A1. Strains from 17 of 22 (77%) anti-HBe positive HBV carriers had either mutated the precore start codon (9 strains with either CUG, ACG, UUG, or AAG) or mutations in the Kozak sequence preceding the pre-core start codon (8 strains). These mutually exclusive mutations were also identified in subgenotypes A1 (70/266; 26%), A2 (12/255; 5%), and A3 (26/49; 53%) sequences from the GenBank. The results showed that previous, rarely described HBV variants, expressing little or no HBeAg, are selected in anti-HBe positive subgenotype Al carriers from Rwanda and that mutations reducing HBeAg synthesis might be unique for a particular HBV clade, not just for a specific genotype or subgenotype.
Collapse
Affiliation(s)
- Heléne Norder
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy, Gothenburg University, 405 30 Gothenburg, Sweden.
| | - Theogene Twagirumugabe
- School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, Kigali, Rwanda.
| | - Joanna Said
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy, Gothenburg University, 405 30 Gothenburg, Sweden.
| | - Yarong Tian
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy, Gothenburg University, 405 30 Gothenburg, Sweden.
| | - Ka-Wei Tang
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy, Gothenburg University, 405 30 Gothenburg, Sweden.
| | - Magnus Lindh
- Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy, Gothenburg University, 405 30 Gothenburg, Sweden.
| |
Collapse
|
21
|
Molecular Characterization of Coexistence of HBsAg and Anti-HBs in a Patients Infected with HBV Genotype I. HEPATITIS MONTHLY 2019. [DOI: 10.5812/hepatmon.81740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
|
22
|
McNaughton AL, D'Arienzo V, Ansari MA, Lumley SF, Littlejohn M, Revill P, McKeating JA, Matthews PC. Insights From Deep Sequencing of the HBV Genome-Unique, Tiny, and Misunderstood. Gastroenterology 2019; 156:384-399. [PMID: 30268787 PMCID: PMC6347571 DOI: 10.1053/j.gastro.2018.07.058] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 06/27/2018] [Accepted: 07/23/2018] [Indexed: 12/13/2022]
Abstract
Hepatitis B virus (HBV) is a unique, tiny, partially double-stranded, reverse-transcribing DNA virus with proteins encoded by multiple overlapping reading frames. The substitution rate is surprisingly high for a DNA virus, but lower than that of other reverse transcribing organisms. More than 260 million people worldwide have chronic HBV infection, which causes 0.8 million deaths a year. Because of the high burden of disease, international health agencies have set the goal of eliminating HBV infection by 2030. Nonetheless, the intriguing HBV genome has not been well characterized. We summarize data on the HBV genome structure and replication cycle, explain and quantify diversity within and among infected individuals, and discuss advances that can be offered by application of next-generation sequencing technology. In-depth HBV genome analyses could increase our understanding of disease pathogenesis and allow us to better predict patient outcomes, optimize treatment, and develop new therapeutics.
Collapse
Affiliation(s)
- Anna L McNaughton
- Nuffield Department of Medicine, Peter Medawar Building for Pathogen Research, Oxford, United Kingdom
| | - Valentina D'Arienzo
- Nuffield Department of Medicine, NDM Research Building, Oxford, United Kingdom
| | - M Azim Ansari
- Nuffield Department of Medicine, Peter Medawar Building for Pathogen Research, Oxford, United Kingdom
| | - Sheila F Lumley
- Nuffield Department of Medicine, Peter Medawar Building for Pathogen Research, Oxford, United Kingdom; Department of Infectious Diseases and Microbiology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom
| | - Margaret Littlejohn
- Victorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital at the Peter Doherty Institute of Infection and Immunity, Melbourne, Australia; Department of Microbiology and Immunology, University of Melbourne. Melbourne, Australia
| | - Peter Revill
- Victorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital at the Peter Doherty Institute of Infection and Immunity, Melbourne, Australia; Department of Microbiology and Immunology, University of Melbourne. Melbourne, Australia
| | - Jane A McKeating
- Nuffield Department of Medicine, NDM Research Building, Oxford, United Kingdom
| | - Philippa C Matthews
- Nuffield Department of Medicine, Peter Medawar Building for Pathogen Research, Oxford, United Kingdom; Department of Infectious Diseases and Microbiology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom.
| |
Collapse
|
23
|
Clinical Manifestations and Laboratory Tests of AECHB and Severe Hepatitis (Liver Failure). ACUTE EXACERBATION OF CHRONIC HEPATITIS B 2019. [PMCID: PMC7418529 DOI: 10.1007/978-94-024-1603-9_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
This chapter describes the clinical symptoms and signs of AECHB and HBV ACLF, classification, grading of HBV ACLF and their features, diagnostic principles and standards in liver pathology, biochemistry, and virology of HBV ACLF.Liver failure is defined as serious damage to the liver cause by a variety of etiologies, leading to liver function disorder or even decompensation, and clinical syndromes with coagulopathy, jaundice, hepatic encephalopathy, and ascites. Severe hepatitis B can be indicated pathologically by apparent hepatocellular necrosis, including extensive multifocal, confluent, bridging, sub-massive or massive necrosis. Laboratory tests during the course of severe exacerbation of chronic hepatitis B can reflect pathological changes and liver function in a timely manner, providing objective and informative reference data for evaluation of disease severity and treatment efficacy. Among the most important laboratory tests are those for prothrombin activity, international normalized ratio, and increases in total bilirubin concentration. Severe hepatitis B is associated with interactions between the virus and host factors. Detection of HBV DNA, HBV genotype, quasispecies and HBV mutation can provide important theoretical bases for the prevention, control or mitigation of the progress of severe hepatitis B. Noninvasive imaging modalities can be used to visualize the entire liver and parts of it. Measuring liver volume to evaluate liver size and liver reserve capacity is regarded as important in diagnosis, surgical approach and prognostic evaluation of patients with severe exacerbation of chronic hepatitis B and liver failure. Model for End-Stage Liver Disease (MELD) is the first quantitative method developed to assess whether a patient with liver failure requires a liver transplant. The predictive value of the MELD model has been improved by the MELD-Na, iMELD, and MESO models. Several other valuable prognostic models have been developed. For example, for patients with HBV-ACLF, the established TPPM scoring system was found to be more predictive than MELD score.
Collapse
|
24
|
Yang L, Wu J, Hu T, Qin S, Deng B, Liu J, Zhang F, He B, Tu C. Genetic diversity of bat orthohepadnaviruses in China and a proposed new nomenclature. INFECTION GENETICS AND EVOLUTION 2018; 63:135-143. [PMID: 29842981 PMCID: PMC7173211 DOI: 10.1016/j.meegid.2018.05.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 05/23/2018] [Accepted: 05/25/2018] [Indexed: 01/24/2023]
Abstract
The orthohepadnaviruses, which include the major human pathogen hepatitis B virus, exist in a wide range of hosts. Since 2013, a large group of orthohepadnaviruses has been identified in bats worldwide and classified as 4 species within the genus Orthohepadnavirus. To further investigate orthohepadnaviruses in the Chinese bat population, 554 archived bat samples from 20 colonies covering 3 southern provinces were screened with results showing that 9 (1.6%) were positive. A systematic phylogenetic analysis has indicated the need for a new nomenclature for bat hepatitis B virus-like viruses: BtHBV, with the addition of 3 new species, one being divided into 6 genotypes. Viruses identified here shared 9.0–19.2% full genome divergence and classified into 3 different genotypes. This study illustrates the genetic diversity of orthohepadnaviruses in the Chinese bat population, and emphasizes need for further investigation of their public health significance. Three new orthohepadnaviral lineages were identified in Chinese bats. A new nomenclature was proposed for bat hepatitis B virus-like viruses. This study indicates genetic diversity of orthohepadnaviruses in Chinese bats.
Collapse
Affiliation(s)
- Ling'en Yang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, Jilin Province, China; Fujian A&F University, College of Animal Science, Fuzhou, Fujian Province, China
| | - Jianmin Wu
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, Guangxi Province, China
| | - Tingsong Hu
- Centers for Disease Control and Prevention of Chengdu Military Command, Kunming, Yunnan Province, China
| | - Shaomin Qin
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, Guangxi Province, China
| | - Bo Deng
- Centers for Disease Control and Prevention of Chengdu Military Command, Kunming, Yunnan Province, China
| | - Jinfeng Liu
- Guangxi Key Laboratory of Veterinary Biotechnology, Guangxi Veterinary Research Institute, Nanning, Guangxi Province, China
| | - Fuqiang Zhang
- Centers for Disease Control and Prevention of Chengdu Military Command, Kunming, Yunnan Province, China.
| | - Biao He
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, Jilin Province, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, Jiangsu Province, China.
| | - Changchun Tu
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, Changchun, Jilin Province, China; Fujian A&F University, College of Animal Science, Fuzhou, Fujian Province, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, Jiangsu Province, China.
| |
Collapse
|
25
|
Patterson Ross Z, Klunk J, Fornaciari G, Giuffra V, Duchêne S, Duggan AT, Poinar D, Douglas MW, Eden JS, Holmes EC, Poinar HN. The paradox of HBV evolution as revealed from a 16th century mummy. PLoS Pathog 2018; 14:e1006750. [PMID: 29300782 PMCID: PMC5754119 DOI: 10.1371/journal.ppat.1006750] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 11/13/2017] [Indexed: 12/11/2022] Open
Abstract
Hepatitis B virus (HBV) is a ubiquitous viral pathogen associated with large-scale morbidity and mortality in humans. However, there is considerable uncertainty over the time-scale of its origin and evolution. Initial shotgun data from a mid-16th century Italian child mummy, that was previously paleopathologically identified as having been infected with Variola virus (VARV, the agent of smallpox), showed no DNA reads for VARV yet did for hepatitis B virus (HBV). Previously, electron microscopy provided evidence for the presence of VARV in this sample, although similar analyses conducted here did not reveal any VARV particles. We attempted to enrich and sequence for both VARV and HBV DNA. Although we did not recover any reads identified as VARV, we were successful in reconstructing an HBV genome at 163.8X coverage. Strikingly, both the HBV sequence and that of the associated host mitochondrial DNA displayed a nearly identical cytosine deamination pattern near the termini of DNA fragments, characteristic of an ancient origin. In contrast, phylogenetic analyses revealed a close relationship between the putative ancient virus and contemporary HBV strains (of genotype D), at first suggesting contamination. In addressing this paradox we demonstrate that HBV evolution is characterized by a marked lack of temporal structure. This confounds attempts to use molecular clock-based methods to date the origin of this virus over the time-frame sampled so far, and means that phylogenetic measures alone cannot yet be used to determine HBV sequence authenticity. If genuine, this phylogenetic pattern indicates that the genotypes of HBV diversified long before the 16th century, and enables comparison of potential pathogenic similarities between modern and ancient HBV. These results have important implications for our understanding of the emergence and evolution of this common viral pathogen.
Collapse
Affiliation(s)
- Zoe Patterson Ross
- Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, School of Life and Environmental Sciences and Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Jennifer Klunk
- McMaster Ancient DNA Centre, Department of Anthropology, McMaster University, Hamilton, ON, Canada
| | - Gino Fornaciari
- Division of Paleopathology, Department of Translational Research on New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Valentina Giuffra
- Division of Paleopathology, Department of Translational Research on New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Sebastian Duchêne
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria, Australia
| | - Ana T. Duggan
- McMaster Ancient DNA Centre, Department of Anthropology, McMaster University, Hamilton, ON, Canada
| | - Debi Poinar
- McMaster Ancient DNA Centre, Department of Anthropology, McMaster University, Hamilton, ON, Canada
| | - Mark W. Douglas
- Storr Liver Centre, The Westmead Institute for Medical Research, The University of Sydney and Westmead Hospital, Westmead, New South Wales, Australia
| | - John-Sebastian Eden
- Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, School of Life and Environmental Sciences and Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Edward C. Holmes
- Marie Bashir Institute for Infectious Diseases and Biosecurity, Charles Perkins Centre, School of Life and Environmental Sciences and Sydney Medical School, The University of Sydney, Sydney, New South Wales, Australia
| | - Hendrik N. Poinar
- McMaster Ancient DNA Centre, Department of Anthropology, McMaster University, Hamilton, ON, Canada
- Michael G. DeGroote Institute for Infectious Disease Research and the Department of Biochemistry, McMaster University, Hamilton, ON, Canada
- Humans and the Microbiome Program, Canadian Institute for Advanced Research, Toronto, ON, Canada
| |
Collapse
|
26
|
Boyce CL, Ganova-Raeva L, Archampong TNA, Lartey M, Sagoe KW, Obo-Akwa A, Kenu E, Kwara A, Blackard JT. Identification and comparative analysis of hepatitis B virus genotype D/E recombinants in Africa. Virus Genes 2017; 53:538-547. [PMID: 28567562 PMCID: PMC5710801 DOI: 10.1007/s11262-017-1469-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 05/25/2017] [Indexed: 12/17/2022]
Abstract
Globally, there are approximately 240 million people chronically infected with hepatitis B virus (HBV)-a major cause of hepatocellular carcinoma. Ten different HBV genotypes (A-J) have been identified with distinct geographic distributions. Novel variants generated by recombination between different HBV genotypes have been documented worldwide and represent an important element of genetic variability with possible clinical implications. Here, the complete genome sequence of an HBV genotype D/E recombinant from Ghana is reported. The full-length sequence was obtained using rolling circle amplification followed by PCR and sequenced using next-generation sequencing (NGS). A consensus sequence was extracted from the NGS data and underwent phylogenetic analysis to determine genotype, as well as the recombination pattern. Subsequently, the sequence was compared to recombinants described previously in Africa. Based on MCMC phylogenetic analysis, SimPlot recombination analyses, and intragroup genetic distance, the isolate 007N full-length genome is unique compared to other reported D/E recombinants in Africa.
Collapse
Affiliation(s)
- Ceejay L Boyce
- Division of Digestive Disease, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Lilia Ganova-Raeva
- Division of Viral Hepatitis, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Timothy N A Archampong
- Department of Medicine and Therapeutics, School of Medicine and Dentistry, College of Health Sciences, University of Ghana, Accra, Ghana
- Korle-Bu Teaching Hospital, Accra, Ghana
| | - Margaret Lartey
- Department of Medicine and Therapeutics, School of Medicine and Dentistry, College of Health Sciences, University of Ghana, Accra, Ghana
- Korle-Bu Teaching Hospital, Accra, Ghana
| | - Kwamena W Sagoe
- Department of Medical Microbiology, School of Biomedical and Allied Health Sciences, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Adjoa Obo-Akwa
- Department of Medicine and Therapeutics, School of Medicine and Dentistry, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Ernest Kenu
- Korle-Bu Teaching Hospital, Accra, Ghana
- School of Public Health, College of Health Sciences, University of Ghana, Accra, Ghana
| | - Awewura Kwara
- Warren Alpert Medical School of Brown University, Providence, RI, USA
- The Miriam Hospital, Providence, RI, USA
- Division of Infectious Diseases and Global Medicine, University of Florida, Gainesville, FL, USA
| | - Jason T Blackard
- Division of Digestive Disease, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
| |
Collapse
|
27
|
Ji X, Zafrullah M, Wiese N, Hayden-Mixon T, Forbi JC, Teo CG, Purdy MA. Permissive, in vitro replication of hepatitis B virus genotype E. J Virol Methods 2017; 243:20-24. [PMID: 28122202 DOI: 10.1016/j.jviromet.2017.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 01/17/2017] [Accepted: 01/18/2017] [Indexed: 11/28/2022]
Abstract
A cloned stable cell line, HepG2-HBVE6, was established following transfection of HepG2 cells with a retroviral plasmid into which a 1.1-fold genomic construct of hepatitis B virus (HBV) belonging to genotype E (HBV/E) was inserted. The cell line retains the entire HBV/E insert, and produces episomal HBV DNA. It expresses HBV pregenomic, preS1 and preS2/S transcripts, and sheds hepatitis B surface and e antigens as well as structures resembling HBV-subviral and Dane particles. The HepG2-HBVE6 cell line, in permitting recapitulation of the HBV life cycle, may be used for studying viral characteristics, therapeutic and preventative outcomes and for preparing reagents specific to HBV genotype E.
Collapse
Affiliation(s)
- Xin Ji
- Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Mohammad Zafrullah
- Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Nicholas Wiese
- Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Tonya Hayden-Mixon
- Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Joseph C Forbi
- Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Chong-Gee Teo
- Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Michael A Purdy
- Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| |
Collapse
|
28
|
Dongdem AZ, Dzodzomenyo M, Asmah RH, Nyarko KM, Nortey P, Agyei A, Adjei DN, Kenu E, Adjei AA. Hepatitis B virus genotypes among chronic hepatitis B patients reporting at Korle-Bu teaching hospital, Accra, Ghana. Pan Afr Med J 2016; 25:5. [PMID: 28210373 PMCID: PMC5292115 DOI: 10.11604/pamj.supp.2016.25.1.6170] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 05/29/2015] [Indexed: 12/17/2022] Open
Abstract
Introduction Knowledge of hepatitis B virus (HBV) genotype is an important predictive variable which might have an impact in management and treatment of patients with chronic hepatitis B infection. In Ghana very little information is available on hepatitis B genotypes. This study was conducted to determine the distribution of HBV genotypes circulating among chronic hepatitis B patients reporting at the Korle-Bu Teaching Hospital (KBTH), Accra, Ghana. Methods Blood samples (10 ml) were collected from 250 consenting patients. DNA was extracted and amplified using polymerase chain reaction technique. Restriction fragment length polymorphism (RFLP) was used for the detection of genotypes. Results Out of the 250 chronic hepatitis B patients who were HBsAg positive, 91 (36.4%) were males aged 29.8 ± 9.1 and 159 (63.6%) females aged 33± 12.1 years. HBV DNA was detected in 111 (44.4%) but only 58 (52%) of these were typeable. These were classified as genotype A, 8 (7.2%); genotype D, 3 (2.7%) and genotype E, 47 (42.3%). Our results did not show any association between the infecting genotype and age (X2= 0.923; p-value=0.623) or gender (X2= 0.283, p= 0.579). Conclusion Consistent with similar studies worldwide, the results suggest that genotypes A, D and E were the genotypes circulating among chronic hepatitis B patients who reported to the Korle-Bu Teaching Hospital with genotype E being the most predominant and therefore constitutes an important public health concern. We recommend further epidemiological studies to understand the implication of genotype E in terms of disease progression and treatment.
Collapse
Affiliation(s)
- Anthony Zunuo Dongdem
- Ghana Field Epidemiology and Laboratory Training Program, School of Public Health, College of Health Sciences, University of Ghana, Legon, Ghana; Department of Epidemiology and Biostatistics, School of Public Health, University of Health and Allied Sciences, Ho, Volta Region, Ghana
| | - Mawuli Dzodzomenyo
- Department of Biological, Environmental and Occupational Health, School of Public Health, College of Health Sciences, University of Ghana, Legon, Ghana
| | - Richard Harry Asmah
- School of Biomedical and Allied Health Sciences, College of Health Sciences, Korle-Bu, Accra, Ghana
| | - Kofi Mensah Nyarko
- Ghana Field Epidemiology and Laboratory Training Program, School of Public Health, College of Health Sciences, University of Ghana, Legon, Ghana
| | - Priscillia Nortey
- Ghana Field Epidemiology and Laboratory Training Program, School of Public Health, College of Health Sciences, University of Ghana, Legon, Ghana
| | - Adwoa Agyei
- Department of Medicine, Korle-bu Teaching Hospital, Accra, Ghana
| | - David Nana Adjei
- School of Biomedical and Allied Health Sciences, College of Health Sciences, Korle-Bu, Accra, Ghana
| | - Ernest Kenu
- Ghana Field Epidemiology and Laboratory Training Program, School of Public Health, College of Health Sciences, University of Ghana, Legon, Ghana
| | - Andrew Anthony Adjei
- Department of Pathology, University of Ghana Medical School, College of Health Sciences, Korle-Bu, Accra, Ghana
| |
Collapse
|
29
|
Mahmood M, Anwar MA, Khanum A, Zaman N, Raza A. Distribution and clinical significance of hepatitis B virus genotypes in Pakistan. BMC Gastroenterol 2016; 16:104. [PMID: 27565427 PMCID: PMC5002161 DOI: 10.1186/s12876-016-0513-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 08/03/2016] [Indexed: 02/07/2023] Open
Abstract
Background Hepatitis B virus (HBV) genotype and its role in disease progression and patients’ response to antiviral treatment, is not well studied in Pakistan. This comprehensive study was aimed to determine the distribution of HBV genotypes in Pakistan and their possible association with phases of HBV infection. Methods A total of 840 HBsAg positive samples was collected and tested for HBV DNA quantity. Samples below 100 IU/ml were excluded from the study. A total of 715 samples representing all the six parts of the country were genotyped by type specific primer PCR method. Clinical data of only 384 patients was compared as the remaining 332 were either receiving antiviral treatment or their infection phase was not confirmed. Results Genotype D was found in 509 samples (71.2 %), genotype A in 55 samples (7.7 %) and mixed infection with genotypes A and D in 124 samples (17.3 %). Genotypes B, C and E were identified in less than 1 % of the total samples. Genotype A, D and their mixture (A + D) were compared for severity of HBV infection. Significant differences were not found in distribution of HBV genotypes among different disease stages. Conclusion HBV genotype D was the predominant infection in all study areas of Pakistan followed by mixed genotypes infection (A + D) whereas genotype A has 10 times lower prevalence than genotype D. Genotypes B, C, E and F altogether make only 1.5 % of the prevalence. Genotype do not appears to show the severity of liver disease.
Collapse
Affiliation(s)
- Majid Mahmood
- Department of Zoology, The University of Poonch, Rawalakot, Azad Jammu and Kashmir, 12350, Pakistan. .,Department of Zoology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, 46300, Pakistan.
| | - Muhammad Asim Anwar
- Department of General Medicine, Pakistan Atomic Energy Commission (PAEC) General Hospital, Islamabad, 44000, Pakistan
| | - Azra Khanum
- Barani Institute of Management Sciences (BIMS), Rawalpindi, 46300, Pakistan
| | - Nasib Zaman
- Center for Biotechnology & Microbiology, University of Swat, Swat, 19130, Pakistan
| | - Abida Raza
- Diagnostic Department, Nuclear Medicine, Oncology and Radiotherapy Institute (NORI), Islamabad, 44000, Pakistan
| |
Collapse
|
30
|
Liao H, Li X, Liu Y, Xu Z, Huang P, Nian X, Liu X, Xu D. Intergenotype recombinant analysis of full-length hepatitis B virus genomes from 516 Chinese patients with different illness categories. J Med Virol 2016; 89:139-145. [PMID: 27328656 DOI: 10.1002/jmv.24609] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/20/2016] [Indexed: 01/05/2023]
Abstract
This study aimed to reveal characteristics and clinical relevance of HBV intergenotypic recombinants. Serum samples of 516 patients from Northern China were collected, including 131 with acute hepatitis B (AHB), 239 with chronic hepatitis B (CHB), and 146 with acute-on-chronic liver failure (ACLF). Full-length HBV genomes were sequenced and HBV genotypes were analyzed. Genotypes C, B, D, and intergenotypic recombinants were detected in 71.12% (367/516), 19.96% (103/516), 0.78% (4/516), and 8.14% (42/516) of the patients. The latter comprised 21 with AHB, 10 with CHB, and 11 with ACLF; and the occupations of intergenotypic recombinants in AHB, CHB, and ACLF groups were 16.03%, 4.18%, and 7.53% (P < 0.01), respectively. HBV B/C and C/D hybrids accounted for 85.71% (36/42) and 14.29% (6/42) of the intergenotypic recombinants. In AHB and CHB groups, serum HBV DNA levels were significantly lower in patients with intergenotypic recombinants than those without intergenotypic recombinants. Difference in basal core promoter A1762T/G1764A mutations and precore G1896A mutation incidences was not significant between B/C recombinant and genotypes B or C virus, although the significance was there between genotypes B and C viruses. Clonal sequence analysis showed that intergenotypic recombinant viral strains existed in single or in concomitance with other genotype virus. Phenotypic analysis showed that viral replication capacity was similar between recombinant and non-recombinant strains in tested samples. Taken together, the occurrence of intergenotypic recombinant HBV is relatively low in HBV-infected patients in Northern China, and intergenotypic recombinant HBV infection is likely favorable to induce an acute course of disease. J. Med. Virol. 89:139-145, 2017. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Hao Liao
- Research Center for Clinical and Translational Medicine, Beijing 302 Hospital, Beijing, China
| | - Xiaodong Li
- Research Center for Clinical and Translational Medicine, Beijing 302 Hospital, Beijing, China
| | - Yan Liu
- Research Center for Clinical and Translational Medicine, Beijing 302 Hospital, Beijing, China
| | - Zhihui Xu
- Research Center for Clinical and Translational Medicine, Beijing 302 Hospital, Beijing, China
| | - Pengyu Huang
- Institute of Biochemistry and Molecular Biology, Guangdong Medical College, Guangdong, China
| | - Xueyuan Nian
- Research Center for Clinical and Translational Medicine, Beijing 302 Hospital, Beijing, China
| | - Xinguang Liu
- Institute of Biochemistry and Molecular Biology, Guangdong Medical College, Guangdong, China. .,Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong, China.
| | - Dongping Xu
- Research Center for Clinical and Translational Medicine, Beijing 302 Hospital, Beijing, China. .,Institute of Biochemistry and Molecular Biology, Guangdong Medical College, Guangdong, China.
| |
Collapse
|
31
|
Song C, Liu Y, Xu L, Wen J, Jiang D, Chen J, Zhai X, Hu Z, Liu L, Liu J. Hepatitis B virus mutations, expression quantitative trait loci for PTPN12, and their interactions in hepatocellular carcinoma. Cancer Med 2016; 5:1687-93. [PMID: 27075395 PMCID: PMC4944896 DOI: 10.1002/cam4.712] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 02/29/2016] [Accepted: 03/01/2016] [Indexed: 12/11/2022] Open
Abstract
Previously we identified that HBV(Hepatitis B virus) sequence variation, which may interact with host human leukocyte antigen (HLA) genetic variation, could influence host risk of hepatocellular carcinoma (HCC). More HBV‐host interactions need to be identified. Protein tyrosine phosphatase nonreceptor type 12 (PTPN12), serves as an antagonist to tyrosine kinase signaling, may play integral roles in immune response against HBV infection and the development of HCC. Rs11485985 was an expression quantitative trait loci (eQTL) for PTPN12 by bioinformatics analyses. In this study, we genotyped the PTPN12 eQTL and sequenced the HBV region EnhII/BCP/PC in a case–control cohort including 1507 HBV‐related HCC cases and 1560 HBV persistent carriers as controls. The variant genotype GG of rs11489585 increased HCC risk compared to the HBV persistent carriers (adjusted OR = 2.03, 95% confidence interval [CIs] = 1.30–3.18). We also detected borderline significant associations of PTPN12 eQTL rs11489585 with HBV mutations (P = 0.05 for G1799C). Taken together, PTPN12 may influence HCC risk accompanied by HBV mutations.
Collapse
Affiliation(s)
- Ci Song
- Department of Epidemiology, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center of Cancer Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Yao Liu
- Pathology Center and Department of Pathology, Soochow University, Suzhou, China
| | - Lu Xu
- Department of Epidemiology, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing, 211166, China
| | - Juan Wen
- Nanjing Maternity and Child Health Care Institute, Nanjing Maternity and Child Health Care Hospital Affiliated with Nanjing Medical University, Nanjing, China
| | - Deke Jiang
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | | | - Xiangjun Zhai
- Department of Infection Diseases, Jiangsu Province Center for Disease Prevention and Control, Nanjing, China
| | - Zhibin Hu
- Department of Epidemiology, Collaborative Innovation Center For Cancer Personalized Medicine, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.,Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center of Cancer Medicine, Nanjing Medical University, Nanjing, 211166, China
| | - Li Liu
- Digestive Endoscopy Center, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jibin Liu
- Department of Hepatobiliary Surgery, Nantong Tumor Hospital, Nantong, China
| |
Collapse
|
32
|
Tong S, Revill P. Overview of hepatitis B viral replication and genetic variability. J Hepatol 2016; 64:S4-S16. [PMID: 27084035 PMCID: PMC4834849 DOI: 10.1016/j.jhep.2016.01.027] [Citation(s) in RCA: 276] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 01/18/2016] [Accepted: 01/25/2016] [Indexed: 02/06/2023]
Abstract
Chronic infection with hepatitis B virus (HBV) greatly increases the risk for liver cirrhosis and hepatocellular carcinoma (HCC). HBV isolates worldwide can be divided into ten genotypes. Moreover, the immune clearance phase selects for mutations in different parts of the viral genome. The outcome of HBV infection is shaped by the complex interplay of the mode of transmission, host genetic factors, viral genotype and adaptive mutations, as well as environmental factors. Core promoter mutations and mutations abolishing hepatitis B e antigen (HBeAg) expression have been implicated in acute liver failure, while genotypes B, C, subgenotype A1, core promoter mutations, preS deletions, C-terminal truncation of envelope proteins, and spliced pregenomic RNA are associated with HCC development. Our efforts to treat and prevent HBV infection are hampered by the emergence of drug resistant mutants and vaccine escape mutants. This paper provides an overview of the HBV life cycle, followed by review of HBV genotypes and mutants in terms of their biological properties and clinical significance.
Collapse
Affiliation(s)
- Shuping Tong
- Liver Research Center, Rhode Island Hospital, The Alpert Warren School of Medicine, Brown University, Providence, RI, USA; Key Laboratory of Medical Molecular Virology, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Peter Revill
- Research and Molecular Development, Victorian Infectious Diseases Reference Laboratory, Doherty Institute, Melbourne, VIC, Australia ()
| |
Collapse
|
33
|
Rahman MA, Hakim F, Ahmed M, Ahsan CR, Nessa J, Yasmin M. Prevalence of genotypes and subtypes of hepatitis B viruses in Bangladeshi population. SPRINGERPLUS 2016; 5:278. [PMID: 27006886 PMCID: PMC4779089 DOI: 10.1186/s40064-016-1840-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 02/15/2016] [Indexed: 12/18/2022]
Abstract
The genetic variability of hepatitis B virus (HBV) represents a challenge for the sensitivity of immunologic and molecular based assays. Based on sequence divergences in the entire genome of >8 %, HBV genomes have been classified into ten genotypes designated as A to J. The aim of this study was to determine HBV genotypes and subtype in samples of HBV infected patients in Bangladesh. The sera samples were collected from chronically infected HBV patients. At first the DNA positive HBV samples were screened by EIA in our laboratory and the 1063 bp region of surface gene was amplified, sequenced and genotyped by sequence analysis. The same sequences were also used for subtypes and mutational analyses. After that, genotyping was also carried out by nested PCR using genotype specific primers in the same region of HBV surface gene. A total of 39 samples were sequencing to find out the genotypes and subtypes. It was found that the prevalent genotype was genotype C (subgenotype C1) which accounted for 48.7 %. The other genotypes found were genotype A (23.1 %) and genotype D (28.2 %). Predominant subtypes in Bangladesh were adr (41 %) followed by subtype adw2 (28.2 %), ayw3 (25.6 %), and others. Additionally, genotyping was also done by nested PCR using type-specific primers. In this method, out of 17 samples 6 were found to be genotype C, followed by genotype D (4 of 17) and genotype A (3 of 17). In PCR-based genotyping system we also observed the mix genotypes; 3 samples contained both genotype A and D, and 2 samples contained both C and D. The genetic diversity of HBV and distribution of its genotypes and subtypes amongst Bangladeshi population were done in this study, which will help us to provide information regarding circulating genotypes in this region and also help physicians to prescribe proper antiviral/interferon therapy.
Collapse
Affiliation(s)
- Md Arifur Rahman
- Department of Microbiology, University of Dhaka, Dhaka, 1000 Bangladesh ; Department of Microbiology, Noakhali Science and Technology University, Sonapur, Noakhali, 3814 Bangladesh
| | - Farzana Hakim
- Department of Microbiology, University of Dhaka, Dhaka, 1000 Bangladesh
| | - Mamun Ahmed
- Department of Biochemistry and Molecular Biology, University of Dhaka, Dhaka, Bangladesh
| | | | - Jamalun Nessa
- Department of Microbiology, University of Dhaka, Dhaka, 1000 Bangladesh
| | - Mahmuda Yasmin
- Department of Microbiology, University of Dhaka, Dhaka, 1000 Bangladesh
| |
Collapse
|
34
|
Littlejohn M, Locarnini S, Yuen L. Origins and Evolution of Hepatitis B Virus and Hepatitis D Virus. Cold Spring Harb Perspect Med 2016; 6:a021360. [PMID: 26729756 DOI: 10.1101/cshperspect.a021360] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Members of the family Hepadnaviridae fall into two subgroups: mammalian and avian. The detection of endogenous avian hepadnavirus DNA integrated into the genomes of zebra finches has revealed a deep evolutionary origin of hepadnaviruses that was not previously recognized, dating back at least 40 million and possibly >80 million years ago. The nonprimate mammalian members of the Hepadnaviridae include the woodchuck hepatitis virus (WHV), the ground squirrel hepatitis virus, and arctic squirrel hepatitis virus, as well as a number of members of the recently described bat hepatitis virus. The identification of hepatitis B viruses (HBVs) in higher primates, such as chimpanzee, gorilla, orangutan, and gibbons that cluster with the human HBV, as well as a number of recombinant forms between humans and primates, further implies a more complex origin of this virus. We discuss the current theories of the origin and evolution of HBV and propose a model that includes cross-species transmissions and subsequent recombination events on a genetic backbone of genotype C HBV infection. The hepatitis delta virus (HDV) is a defective RNA virus requiring the presence of the HBV for the completion of its life cycle. The origins of this virus remain unknown, although some recent studies have suggested an ancient African radiation. The age of the association between HDV and HBV is also unknown.
Collapse
Affiliation(s)
- Margaret Littlejohn
- Molecular Research and Development, Victorian Infectious Diseases Reference Laboratory, Doherty Institute, Melbourne 3000, Australia
| | - Stephen Locarnini
- Molecular Research and Development, Victorian Infectious Diseases Reference Laboratory, Doherty Institute, Melbourne 3000, Australia
| | - Lilly Yuen
- Molecular Research and Development, Victorian Infectious Diseases Reference Laboratory, Doherty Institute, Melbourne 3000, Australia
| |
Collapse
|
35
|
Coppola N, Onorato L, Minichini C, Di Caprio G, Starace M, Sagnelli C, Sagnelli E. Clinical significance of hepatitis B surface antigen mutants. World J Hepatol 2015; 7:2729-2739. [PMID: 26644816 PMCID: PMC4663392 DOI: 10.4254/wjh.v7.i27.2729] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 09/27/2015] [Accepted: 11/17/2015] [Indexed: 02/06/2023] Open
Abstract
Hepatitis B virus (HBV) infection is a major public health problem in many countries, with nearly 300 million people worldwide carrying HBV chronic infection and over 1 million deaths per year due to cirrhosis and liver cancer. Several hepatitis B surface antigen (HBsAg) mutations have been described, most frequently due to a single amino acid substitution and seldom to a nucleotide deletion. The majority of mutations are located in the S region, but they have also been found in the pre-S1 and pre-S2 regions. Single amino acid substitutions in the major hydrophilic region of HBsAg, called the “a” determinant, have been associated with immune escape and the consequent failure of HBV vaccination and HBsAg detection, whereas deletions in the pre-S1 or pre-S2 regions have been associated with the development of hepatocellular carcinoma. This review article will focus on the HBsAg mutants and their biological and clinical implications.
Collapse
|
36
|
Zhang Q, Liao Y, Chen J, Cai B, Su Z, Ying B, Lu X, Tao C, Wang L. Epidemiology study of HBV genotypes and antiviral drug resistance in multi-ethnic regions from Western China. Sci Rep 2015; 5:17413. [PMID: 26612031 PMCID: PMC4661727 DOI: 10.1038/srep17413] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 10/29/2015] [Indexed: 02/07/2023] Open
Abstract
Hepatitis B virus (HBV) infection is a critical global health issue and moderately epidemic in Western China, but HBV molecular epidemiology characteristics are still limited. We conducted this study to investigate HBV genotypes and antiviral resistant mutations in this multi-ethnic area. A total of 1316 HBV patients were recruited from four ethnic groups from 2011 to 2013. Genotypes and resistant mutations were determined by Sanger sequencing. Four genotypes (B, C, D and C/D) were identified. Genotype B and C were common in Han population, while genotype D was predominant in Uygurs. Genotype C was the major genotype in both Tibetans and Yis, and recombinant C/D was found in Tibetans only. Lamivudine resistance was common in all populations, especially in Hans with prevalence of 42.8%. Entecavir resistance was barely observed regardless of ethnicity. Genotype C isolates had higher rates of rtA181T/V than genotype B (13.5% vs. 5.1%, P < 0.001), in accordance with higher prevalence of resistance to adefovir (20.0% vs. 9.5%, P < 0.001). While incidence of resistant mutations to other drugs and clinical factors showed no difference among different genotypes. HBV genotypes and resistance-conferring mutations had different geographic and demographic distributions in Western China, which provided molecular epidemiology data for clinical management.
Collapse
Affiliation(s)
- Qi Zhang
- Department of Laboratory Medicine, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Wuhou district, Chengdu 610041, People's Republic of China
| | - Yun Liao
- Department of Laboratory Medicine, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Wuhou district, Chengdu 610041, People's Republic of China
| | - Jie Chen
- Department of Laboratory Medicine, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Wuhou district, Chengdu 610041, People's Republic of China
| | - Bei Cai
- Department of Laboratory Medicine, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Wuhou district, Chengdu 610041, People's Republic of China
| | - Zhenzhen Su
- Department of Laboratory Medicine, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Wuhou district, Chengdu 610041, People's Republic of China
| | - Binwu Ying
- Department of Laboratory Medicine, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Wuhou district, Chengdu 610041, People's Republic of China
| | - Xiaojun Lu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Wuhou district, Chengdu 610041, People's Republic of China
| | - Chuanmin Tao
- Department of Laboratory Medicine, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Wuhou district, Chengdu 610041, People's Republic of China
| | - Lanlan Wang
- Department of Laboratory Medicine, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Wuhou district, Chengdu 610041, People's Republic of China
| |
Collapse
|
37
|
Giersch K, Dandri M. Hepatitis B and Delta Virus: Advances on Studies about Interactions between the Two Viruses and the Infected Hepatocyte. J Clin Transl Hepatol 2015; 3:220-9. [PMID: 26623269 PMCID: PMC4663204 DOI: 10.14218/jcth.2015.00018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 07/11/2015] [Accepted: 07/12/2015] [Indexed: 12/14/2022] Open
Abstract
The mechanisms determining persistence of hepatitis B virus (HBV) infection and long-term pathogenesis of HBV-associated liver disease appear to be multifactorial. Although viral replication can be efficiently suppressed by the antiviral treatments currently available, viral clearance is generally not achieved since HBV has developed unique replication strategies, enabling persistence of its genome within the infected hepatocytes. Moreover, no direct antiviral therapy exists for the more than 15 million people worldwide that are also coinfected with the hepatitis delta virus (HDV), a defective virus that needs the HBV envelope proteins for propagation. The limited availability of robust HBV and HDV infection systems has hindered the understanding of the complex network of virus-virus and virus-host interactions that are established in the course of infection and slowed down progress in drug development. Since chronic HBV/HDV coinfection leads to the most severe form of chronic viral hepatitis, elucidation of the molecular mechanisms regulating virus-host interplay and pathogenesis are urgently needed. This article summarizes the current knowledge regarding the interactions among HBV, HDV, and the infected target cell and discusses the dependence of HDV on HBV activity and possible future therapeutic approaches.
Collapse
Affiliation(s)
- Katja Giersch
- Department of Internal Medicine, Center for Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Maura Dandri
- Department of Internal Medicine, Center for Internal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- German Center for Infection Research (DZIF), Hamburg-Lübeck-Borstel site, Germany
- Correspondence to: Maura Dandri, Department of Internal Medicine, Center for Internal Medicine, University Medical Center Hamburg-Eppendorf, Martinistr. 52, D-20246 Hamburg, Germany. Tel: +49-40741052949, Fax: +49-40741057232, E-mail:
| |
Collapse
|
38
|
Araujo NM. Hepatitis B virus intergenotypic recombinants worldwide: An overview. INFECTION GENETICS AND EVOLUTION 2015; 36:500-510. [PMID: 26299884 DOI: 10.1016/j.meegid.2015.08.024] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 08/11/2015] [Accepted: 08/19/2015] [Indexed: 02/07/2023]
Abstract
Novel variants generated by recombination events between different hepatitis B virus (HBV) genotypes have been increasingly documented worldwide, and the role of recombination in the evolutionary history of HBV is of significant research interest. In the present study, large-scale data retrieval and analysis on HBV intergenotypic recombinant genomes were performed. The geographical distribution of HBV recombinants as well as the molecular processes involved in recombination were examined. After review of published data, a total of 436 complete HBV sequences, previously identified as recombinants, were included in the recombination detection analysis. About 60% of HBV recombinants were B/C (n=179) and C/D (n=83) hybrids. A/B/C, A/C, A/C/G, A/D, A/E, A/G, B/C/U (U=unknown genotype), C/F, C/G, C/J, D/E, D/F, and F/G hybrids were additionally identified. HBV intergenotypic sequences were reported in almost all geographical regions with similar circulation patterns as their original genotypes, indicating the potential for spreading in a wide range of human populations and developing their own epidemiology. Recombination breakpoints were non-randomly distributed in the genome, and specific favored sites detected, such as within nt 1700-2000 and 2100-2300 regions, which displayed a statistically significant difference in comparison with the remaining genome. Elucidation of the effects of recombination events on the evolutionary history of HBV is critical to understand current and future evolution trends.
Collapse
Affiliation(s)
- Natalia M Araujo
- Laboratório de Virologia Molecular, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, 21040-360 Rio de Janeiro, RJ, Brazil.
| |
Collapse
|
39
|
Kojima Y, Kawahata T, Mori H, Furubayashi K, Taniguchi Y, Itoda I, Komano J. Identification of Novel Recombinant Forms of Hepatitis B Virus Generated from Genotypes Ae and G in HIV-1-Positive Japanese Men Who Have Sex with Men. AIDS Res Hum Retroviruses 2015; 31:760-7. [PMID: 25825936 DOI: 10.1089/aid.2014.0281] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The rare hepatitis B virus (HBV) genotype G (HBV/G) coinfects HIV-1-positive individuals along with HBV/A and generates recombinants. However, the circulation of HBV A/G recombinants remains poorly understood. This molecular epidemiologic study examined HBV A/G recombinants in Japanese HIV-1-positive men who have sex with men (MSM). Initially, blood specimens submitted for confirmatory tests of HIV infection in Osaka and Tokyo, Japan, from 2006 to 2013 were examined for HIV-1, and HIV-1-positive specimens were screened for HBV. Among 817 specimens from HIV-1-positive individuals, HBsAg was detected in 59 specimens; of these, HBV/Ae (alternatively A2), a subgenotype of HBV/A prevalent in Europe and North America, was identified in 70.2%, HBV/C in 17.5%, and HBV/G in 10.5%, and HBV/E in 1.8% according to the core gene sequence. The full-length genome analysis of HBV was performed on HBV/G-positive specimens because some HBV A/G recombinants were historically overlooked by genotyping based on a partial genome analysis. It revealed that five of the specimens contained novel Ae/G recombinants, the core gene of which had a high sequence similarity to HBV/G. Detailed analyses showed that novel recombinants were coinfected with HBV/Ae in a recombinant-dominant fashion. No major drug-resistant mutations were found in the newly identified HBV Ae/G recombinants. Some of the individuals asymptomatically coinfected with HIV/HBV suffered mild liver injury. This study demonstrated that novel Ae/G HBV recombinants were identified in Japanese HIV-1-positive MSM. The pathogenicity of novel HBV Ae/G recombinants should be examined in a future longitudinal study. Surveillance of such viruses in HIV-1-positive individuals should be emphasized.
Collapse
Affiliation(s)
- Yoko Kojima
- Department of Infectious Diseases, Osaka Prefectural Institute of Public Health, Osaka, Japan
| | - Takuya Kawahata
- Department of Infectious Diseases, Osaka Prefectural Institute of Public Health, Osaka, Japan
| | - Haruyo Mori
- Department of Infectious Diseases, Osaka Prefectural Institute of Public Health, Osaka, Japan
| | | | | | | | - Jun Komano
- Department of Infectious Diseases, Osaka Prefectural Institute of Public Health, Osaka, Japan
- National Hospital Organization, Nagoya Medical Center, Department of Clinical Laboratory, Nagoya, Japan
| |
Collapse
|
40
|
Li HM, Wang JQ, Wang R, Zhao Q, Li L, Zhang JP, Shen T. Hepatitis B virus genotypes and genome characteristics in China. World J Gastroenterol 2015; 21:6684-6697. [PMID: 26074707 PMCID: PMC4458779 DOI: 10.3748/wjg.v21.i21.6684] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 04/03/2015] [Indexed: 02/07/2023] Open
Abstract
AIM: To analyze the hepatitis B virus (HBV) characters in China, as well as the correlation between several HBV mutation and hepatitis symptoms.
METHODS: A total of 1148 HBV genome sequences from patients throughout China were collected via the National Center For Biotechnology Information database (information including: genotype, territory and clinical status). HBV genotypes were classified by a direct reference from the Genbank sequence annotation, phylogenetic tree and online software analysis (http://www.ncbi.nlm.nih.gov/projects/genotyping/formpage.cgi). The phylogenetic tree was constructed based on the neighbor-joining method by MEGA5.0 software. HBV sequences were grouped based on phylogenetic tree and the distance between the groups was calculated by using the computer between group mean distance methods. Seven hundred and twelve HBV sequences with clear annotation of clinical symptoms were selected to analyses the correlation of mutation and clinical symptoms. Characteristics of sequences were analyzed by using DNAStar and BioEdit software packages. The codon usage bias and RNA secondary structures analysis were performed by RNAdraw software. Recombination analysis was performed by using Simplot software.
RESULTS: In China, HBV genotype C was the predominant in Northeastern, genotype B was predominant in Central Southern areas, genotype B and C were both dominant in Southwestern areas, and the recombinant genotype C/D was predominant in Northwestern areas. C2 and B2 were identified as the two major sub-genotypes, FJ386674 might be a putative sub-genotype as B10. The basal core promoter double mutation and pre-C mutation showed various significant differences between hepatitis symptoms. In addition to ATG, many other HBV initiation codons also exist. HBV has codon usage bias; the termination codon of X, C and P open reading frames (ORF) were TAA, TAG, and TGA, respectively. The major stop codons of S-ORF were TAA (96.45%) and TGA (83.60%) in B2 and C2 subtype, respectively.
CONCLUSION: This study recapitulated the epidemiology of HBV in China, and the information might be meaningful critical for the future prevention and therapy of HBV infections.
Collapse
|
41
|
Croagh CM, Desmond PV, Bell SJ. Genotypes and viral variants in chronic hepatitis B: A review of epidemiology and clinical relevance. World J Hepatol 2015; 7:289-303. [PMID: 25848459 PMCID: PMC4381158 DOI: 10.4254/wjh.v7.i3.289] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 12/04/2014] [Accepted: 12/29/2014] [Indexed: 02/06/2023] Open
Abstract
The Hepatitis B Virus (HBV) has a worldwide distribution and is endemic in many populations. It is constantly evolving and 10 genotypic strains have been identified with varying prevalences in different geographic regions. Numerous stable mutations in the core gene and in the surface gene of the HBV have also been identified in untreated HBV populations. The genotypes and viral variants have been associated with certain clinical features of HBV related liver disease and Hepatocellular carcinoma. For example Genotype C is associated with later hepatitis B e antigen (HBeAg) seroconversion, and more advanced liver disease. Genotype A is associated with a greater risk of progression to chronicity in adult acquired HBV infections. Genotype D is particularly associated with the precore mutation and HBeAg negative chronic hepatitis B (CHB). The genotypes prevalent in parts of West Africa, Central and South America, E, F and H respectively, are less well studied. Viral variants especially the Basal Core Promotor mutation is associated with increased risk of fibrosis and cancer of the liver. Although not currently part of routine clinical care, evaluation of genotype and viral variants may provide useful adjunctive information in predicting risk about liver related morbidity in patients with CHB.
Collapse
Affiliation(s)
- Catherine Mn Croagh
- Catherine MN Croagh, Paul V Desmond, Sally J Bell, Department of Gastroenterology, St Vincent's Hospital, Fitzroy, Victoria 3065, Australia
| | - Paul V Desmond
- Catherine MN Croagh, Paul V Desmond, Sally J Bell, Department of Gastroenterology, St Vincent's Hospital, Fitzroy, Victoria 3065, Australia
| | - Sally J Bell
- Catherine MN Croagh, Paul V Desmond, Sally J Bell, Department of Gastroenterology, St Vincent's Hospital, Fitzroy, Victoria 3065, Australia
| |
Collapse
|
42
|
Epidemiology of HBV subgenotypes D. Clin Res Hepatol Gastroenterol 2015; 39:28-37. [PMID: 25037178 DOI: 10.1016/j.clinre.2014.06.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 04/09/2014] [Accepted: 06/02/2014] [Indexed: 02/04/2023]
Abstract
The natural history of hepatitis B virus infection is not uniform and affected from several factors including, HBV genotype. Genotype D is a widely distributed genotype. Among genotype D, several subgenotypes differentiate epidemiologically and probably clinically. D1 is predominant in Middle East and North Africa, and characterized by early HBeAg seroconversion and low viral load. D2 is seen in Albania, Turkey, Brazil, western India, Lebanon, and Serbia. D3 was reported from Serbia, western India, and Indonesia. It is a predominant subgenotype in injection drug use-related acute HBV infections in Europe and Canada. D4 is relatively rare and reported from Haiti, Russia and Baltic region, Brazil, Kenya, Morocco and Rwanda. Subgenotype D5 seems to be common in Eastern India. D6 has been reported as a rare subgenotype from Indonesia, Kenya, Russia and Baltic region. D7 is the main genotype in Morocco and Tunisia. D8 and D9 are recently described subgenotypes and reported from Niger and India, respectively. Subgenotypes of genotype D may have clinical and/or viral differences. More subgenotype studies are required to conclude on subgenotype and its clinical/viral characteristics.
Collapse
|
43
|
Shen T, Yan XM, Liu HX, Zhang BX, Li L, Zhang JP, Wang JL, Xiao CJ. Genotype I of hepatitis B virus was found in east Xishuangbanna, China and molecular dynamics of HBV/I. J Viral Hepat 2015; 22:37-45. [PMID: 24548532 DOI: 10.1111/jvh.12231] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 12/01/2013] [Indexed: 02/06/2023]
Abstract
There is a dearth of data about the prevalence of hepatitis B virus (HBV) infection in Mengla, China; and no detailed analysis of the molecular evolution of genotype I in Asia. In this study, 909 serum samples from ethnic minority people in China were obtained. Serological assay and HBV S-gene amplification were carried out, and phylogenetic and evolutionary dynamics analysis of 62 HBV/I S-gene was performed. On this survey, 153 individuals were tested HBsAg-positive. Genotypes of S-gene were classified into three groups: C, B and I. Under the strict model and the relax model, the estimated evolutionary rates for HBV/I were 3.74 × 10(-4) and 6.93 × 10(-4) substitution/site/year, respectively. However, when the geographic origin was taken into account, the mean substitution rates were increased. Estimated time to most recent ancestor of genotype I varied from ~30 to ~70 years ago. The Bayesian sky plot showed a rapid spread of HBV/I at the end of 1980s. Peculiar nucleotides distributed were observed in the subgenotype I1/I2. In conclusion, higher prevalence of HBV infection was observed in Mengla county. Multifactors like timescale and spatial locations should be integrated to provide a better interpretation of the HBV/I evolutionary history in the region.
Collapse
Affiliation(s)
- T Shen
- Medical Science College of Yunnan University, Kunming, China; Institute of Basic and Clinical Medicine, Center of Clinical Molecular Biology, Provincial Key Laboratory for Birth Defects and Genetic Diseases, The First People's Hospital of Yunnan Province, Affiliated Hospital of Kunming Science and Technology University, Kunming, China
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Bokharaei-Salim F, Keyvani H, Monavari SH, Esghaei M, Fakhim S, Ataei Pirkooh A, Behnava B. Distribution of hepatitis B virus genotypes in azerbaijani patients with chronic hepatitis B infection. HEPATITIS MONTHLY 2014; 14:e25105. [PMID: 25685166 PMCID: PMC4310019 DOI: 10.5812/hepatmon.25105] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 11/18/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND Hepatitis B virus (HBV) has been classified into ten genotypes (A-J) based on genome sequence divergence, which is very important for etiological and clinical investigations. HBV genotypes have distinct geographical distributions worldwide. OBJECTIVES The aim of this study was to investigate the distribution of HBV genotypes among Azerbaijani patients with chronic hepatitis B, came from the Republic of Azerbaijan country to Iran to receive medical care. PATIENTS AND METHODS One hundred and three patients with chronic HBV infection, referred to hospitals related to Iran University of Medical Sciences and Tehran Hepatitis Center from August 2011 to July 2014, were enrolled in this cross sectional study. About 3-milliliter of peripheral blood was taken from each patient. After viral DNA extraction, HBV genotypes were tested using the INNO-LiPA™ HBV kit (Innogenetics, Ghent, Belgium). HBV genotyping was confirmed using sequencing of hepatitis B surface antigen (HBsAg) and polymerase (pol) regions of HBV. RESULTS The mean age of patients was 35.9 ± 11.7 years (19-66). Of 103 patients, 72 (69.9%) were male. In the present study, the predominant HBV genotype was D (93.2%) followed by genotype A (5.8%) and concurrent infection with A and D genotypes (0.97%). CONCLUSIONS The main and frequent HBV genotype among Azerbaijani patients with chronic hepatitis B virus infection was genotype D followed by genotype A.
Collapse
Affiliation(s)
- Farah Bokharaei-Salim
- Department of Virology, Iran University of Medical Sciences, Tehran, IR Iran
- Corresponding Author: Farah Bokharaei Salim, Department of Virology, Iran University of Medical Sciences, Tehran, IR Iran. Tel/Fax: +98-2188602205, E-mail:
| | - Hossein Keyvani
- Department of Virology, Iran University of Medical Sciences, Tehran, IR Iran
| | | | - Maryam Esghaei
- Department of Virology, Iran University of Medical Sciences, Tehran, IR Iran
| | - Shahin Fakhim
- Department of Civil Engineering, Faculty of Engineering, Payame Noor University, Karaj, IR Iran
| | | | - Bita Behnava
- Middle East Liver Diseases Center, Tehran, IR Iran
- Iran Hepatitis Network, Tehran, IR Iran
| |
Collapse
|
45
|
Wang W, Liang H, Zeng Y, Lin J, Liu C, Jiang L, Yang B, Ou Q. Establishment of a novel two-probe real-time PCR for simultaneously quantification of hepatitis B virus DNA and distinguishing genotype B from non-B genotypes. Clin Chim Acta 2014; 437:168-74. [DOI: 10.1016/j.cca.2014.07.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 06/04/2014] [Accepted: 07/16/2014] [Indexed: 01/01/2023]
|
46
|
Sun HY, Sheng WH, Tsai MS, Lee KY, Chang SY, Hung CC. Hepatitis B virus coinfection in human immunodeficiency virus-infected patients: A review. World J Gastroenterol 2014; 20:14598-14614. [PMID: 25356024 PMCID: PMC4209527 DOI: 10.3748/wjg.v20.i40.14598] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Revised: 12/24/2013] [Accepted: 04/29/2014] [Indexed: 02/06/2023] Open
Abstract
Hepatitis B virus (HBV) infection is a leading cause of chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma worldwide. Due to the shared modes of transmission, coinfection with HBV and human immunodeficiency virus (HIV) is not uncommon. It is estimated that 10% of HIV-infected patients worldwide are coinfected with HBV. In areas where an HBV vaccination program is implemented, the HBV seroprevalence has declined significantly. In HIV/HBV-coinfected patients, HBV coinfection accelerates immunologic and clinical progression of HIV infection and increases the risk of hepatotoxicity when combination antiretroviral therapy (cART) is initiated, while HIV infection increases the risk of hepatitis events, cirrhosis, and end-stage liver disease related to chronic HBV infection. With the advances in antiviral therapy, concurrent, successful long-term suppression of HIV and HBV replication can be achieved in the cART era. To reduce the disease burden of HBV infection among HIV-infected patients, adoption of safe sex practices, avoidance of sharing needles and diluent, HBV vaccination and use of cART containing tenofovir disoproxil fumarate plus emtricitabine or lamivudine are the most effective approaches. However, due to HIV-related immunosuppression, using increased doses of HBV vaccine and novel approaches to HBV vaccination are needed to improve the immunogenicity of HBV vaccine among HIV-infected patients.
Collapse
|
47
|
Seo Y, Yano Y. Short- and long-term outcome of interferon therapy for chronic hepatitis B infection. World J Gastroenterol 2014; 20:13284-13292. [PMID: 25309065 PMCID: PMC4188886 DOI: 10.3748/wjg.v20.i37.13284] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 01/25/2014] [Accepted: 06/26/2014] [Indexed: 02/06/2023] Open
Abstract
Hepatitis B virus (HBV) infection is a serious clinical problem worldwide. Conventional interferon (IFN)-α has been approved for the treatment of chronic hepatitis B (CHB). Short-term studies have demonstrated that IFN-based therapy is moderately effective in inducing the loss of hepatitis e antigen (HBeAg) or seroconversion (30%-40%) in HBeAg-positive patients and also produces sustained HBV DNA suppression (20%-30%) in HBeAg-negative patients. Many studies have reported a correlation between the HBV genotype and response to IFN treatment. The highest response rate to IFN treatment was found in patients infected with HBV genotype A, followed by HBV genotypes B, C, and D. The long-term effect of IFN-α on CHB has not yet been elucidated. The ability of IFN-α treatment to prevent new cirrhosis, complications associated with cirrhosis, and development of hepatocellular carcinoma (HCC) is controversial. The beneficial effect of IFN-α treatment in reducing the development of HCC has mainly been observed in treatment responders who already have cirrhosis. These inconsistent findings may be attributed to the inevitable limitations of comparisons across studies, including differences in the baseline characteristics of the study and the moderate suppression of HBV replication by IFN-α relative to nucleoside/nucleos(t)ide analogs.
Collapse
|
48
|
Uchida Y, Kouyama JI, Naiki K, Sugawara K, Inao M, Nakayama N, Mochida S. Novel hepatitis B virus strain developing due to recombination between genotypes H and B strains isolated from a Japanese patient. Hepatol Res 2014; 44:1130-1141. [PMID: 24020990 DOI: 10.1111/hepr.12238] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 09/04/2013] [Accepted: 09/04/2013] [Indexed: 02/08/2023]
Abstract
AIM In Japan, genotypes B and C are the predominant genotypes isolated from patients with chronic hepatitis B, while genotype A predominates in patients with acute hepatitis B. Globalization, however, appears to have changed the distribution of the hepatitis B virus (HBV) genotypes. Thus, the viral characteristics of HBV genotypes other than genotypes A, B and C were examined. METHODS Screening of genotypes was performed by enzyme immunoassay and/or polymerase chain reaction INVADER method in 222 patients with HBV. The full-length nucleotide sequences of unusual strains were compared to those in the database, followed by construction of a phylogenetic tree. RESULTS Unusual HBV strains were isolated from two patients: a 27-year-old Japanese bisexual man with acute hepatitis B with HIV co-infection and a 52-year-old Japanese man with chronic hepatitis B. The former strain was classified as genotype H, showing an overall identity of 99.8% to the Thailand strain (EU498228), while the nucleotide sequence of the latter strain showed similarity to the genotype B strains isolated in Malaysia (JQ027316) and Indonesia (JQ429079) between DR2 and DR1 in the X region, with identities of 96.9%. However, this strain was classified as genotype H by full-length sequence analysis, and the sequence between nt2023 and nt2262 showed no similarity to that in any previously reported strains. CONCLUSION HBV strains showing recombination between genotype B and H strains were found even in chronic hepatitis patients in Japan. Globalization may yield HBV strains of possible novel genotypes containing novel nucleotide sequences in the precore/core region.
Collapse
Affiliation(s)
- Yoshihito Uchida
- Department of Gastroenterology and Hepatology, Faculty of Medicine, Saitama Medical University, Moroyamacho, Japan
| | | | | | | | | | | | | |
Collapse
|
49
|
Haldipur BP, Walimbe AM, Arankalle VA. Circulation of genotype-I hepatitis B virus in the primitive tribes of Arunachal Pradesh in early sixties and molecular evolution of genotype-I. INFECTION GENETICS AND EVOLUTION 2014; 27:366-74. [PMID: 25149225 DOI: 10.1016/j.meegid.2014.07.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 07/11/2014] [Accepted: 07/28/2014] [Indexed: 01/12/2023]
Abstract
Retrospective serologic screening of 1077 serum samples collected from the primitive tribe from north-eastern India in 1963 revealed high prevalence of HBV (15% HBsAg carrier rate) and HCV (7% anti-HCV positivity) and co-circulation of multiple HBV genotypes-A, C, D and G. Full genome sequencing classified all the G-genotype samples as genotype-I. Comparison of genotype-I-HBV full-genome sequences representing 1963 (n=5, this study) and 2005 (reported earlier) showed identical recombination break-points of genotypes-A/G/C. Genotype-C and genotype-C-fragment of I-genotype circulating in 1963 were distinctly different. The data demonstrates that the recombination events were not recent. Molecular clock analysis predicted existence of genotype-I in this tribe during 1920s.
Collapse
Affiliation(s)
- Bangari P Haldipur
- Hepatitis Group, National Institute of Virology, Sus Road, Pashan, Pune 411021, India
| | - Atul M Walimbe
- Hepatitis Group, National Institute of Virology, Sus Road, Pashan, Pune 411021, India
| | - Vidya A Arankalle
- Hepatitis Group, National Institute of Virology, Sus Road, Pashan, Pune 411021, India.
| |
Collapse
|
50
|
Chamni N, Louisirirotchanakul S, Oota S, Sakuldamrongpanish T, Saldanha J, Chongkolwatana V, Phikulsod S. Genetic characterization and genotyping of hepatitis B virus (HBV) isolates from donors with an occult HBV infection. Vox Sang 2014; 107:324-32. [PMID: 25040474 DOI: 10.1111/vox.12178] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 05/29/2014] [Accepted: 06/12/2014] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND OBJECTIVES Screening of Thai blood donors has resulted in the detection of donors with an occult HBV infection (OBI), where HBsAg is undetectable, but hepatitis B virus (HBV) DNA is present in serum in low concentrations. This study was designed to determine whether the occurrence of OBI in donors was linked to the HBV genotype and possibly to mutations in the surface (S) and core (C) gene regions. MATERIALS AND METHODS Mutations in the S and C gene regions in 48 Thai donors with OBI were mapped by sequencing. Genotyping was determined with the INNO-LiPA test and by phylogenetic analysis of sequences from the S and C genes. RESULTS The majority of OBI samples were genotype C (81·3%) with 6·3% of samples being genotype B. In addition, two genotype I isolates were identified. Mutations in the S region (100%) were found especially in loop 1 of the major hydrophilic loop (MHL) at positions I110L, T114S, T126I and S113T, whereas mutations in the C region (65%) were within the basal core promoter region (position A1762T/G1764A) and precore region (position G1896A). CONCLUSION The majority of OBI samples were HBV genotype C, although genotype I, which is newly emerging in Thailand, was also detected. The study demonstrated that OBI was probably not associated with a particular HBV genotype or with certain mutations in the S and C gene regions. However, mutations in the C gene region which could potentially impair viral replication and HBsAg production and potentially lead to OBI were identified.
Collapse
Affiliation(s)
- N Chamni
- Department of Microbiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | | | | | | | | | | | | |
Collapse
|