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The Transmission Route and Selection Pressure in HCV Subtype 3a and 3b Chinese Infections: Evolutionary Kinetics and Selective Force Analysis. Viruses 2022; 14:v14071514. [PMID: 35891494 PMCID: PMC9324606 DOI: 10.3390/v14071514] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/23/2022] [Accepted: 07/04/2022] [Indexed: 12/12/2022] Open
Abstract
Hepatitis C virus (HCV) genotype 3 (GT-3) represents 22–30% of all infections and is the second most common genotype among all HCV genotypes. It has two main subtypes, GT-3a and GT-3b, that present epidemiological differences in transmission groups. This report generated 56 GT-3a and 64 GT-3b whole-genome sequences to conduct an evolutionary kinetics and selective force analysis with reference sequences from various countries. Evolutionary analysis showed that HCV GT-3a worldwide might have been transmitted from the Indian subcontinent to South Asia, Europe, North America and then become endemic in China. In China, GT-3a may have been transmitted by intravenous drug users (IDUs) and become endemic in the general population, while GT-3b may have originated from IDUs and then underwent mutual transmission between blood donors (BDs) and IDUs, ultimately becoming independently endemic in IDUs. Furthermore, the spread of GT-3a and GT-3b sequences from BD and IDU populations exhibit different selective pressures: the proportion of positively selected sites (PPSs) in E1 and E2 from IDUs was higher than in BDs. The number of positive selection sites was higher in GT-3b and IDUs. These results indicate that different selective constraints act along with the GT-3a and GT-3b genomes from IDUs and BDs. In addition, GT-3a and GT-3b have different transmission routes in China, which allows us to formulate specific HCV prevention and control strategies in China.
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Lin SK, De Maio N, Pedergnana V, Wu CH, Thézé J, Wilson DJ, Barnes E, Ansari MA. Using host genetics to infer the global spread and evolutionary history of HCV subtype 3a. Virus Evol 2021; 7:veab065. [PMID: 34532064 PMCID: PMC8438900 DOI: 10.1093/ve/veab065] [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: 02/15/2021] [Revised: 06/16/2021] [Accepted: 07/08/2021] [Indexed: 11/17/2022] Open
Abstract
Studies have shown that hepatitis C virus subtype 3a (HCV-3a) is likely to have been circulating in South Asia before its global spread. However, the time and route of this dissemination remain unclear. For the first time, we generated host and virus genome-wide data for more than 500 patients infected with HCV-3a from the UK, North America, Australia, and New Zealand. We used the host genomic data to infer the ancestry of the patients and used this information to investigate the epidemic history of HCV-3a. We observed that viruses from hosts of South Asian ancestry clustered together near the root of the tree, irrespective of the sampling country, and that they were more diverse than viruses from other host ancestries. We hypothesized that South Asian hosts are more likely to have been infected in South Asia and used the inferred host ancestries to distinguish between the location where the infection was acquired and where the sample was taken. Next, we inferred that three independent transmission events resulted in the spread of the virus from South Asia to the UK, North America, and Oceania. This initial spread happened during or soon after the end of World War II. This was subsequently followed by many independent transmissions between the UK, North America, and Oceania. Using both host and virus genomic information can be highly informative in studying the virus epidemic history, especially in the context of chronic infections where migration histories need to be accounted for.
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Affiliation(s)
| | | | - Vincent Pedergnana
- MIVEGEC, Université de Montpellier, CNRS, 911 avenue Agropolis, Montpellier 34000, France
| | - Chieh-Hsi Wu
- Building 54, Mathematical Sciences University of Southampton, Highfield, Southampton SO17 1BJ, UK
| | - Julien Thézé
- Department of Zoology, University of Oxford, South Parks Road, Oxford, Oxfordshire OX1 3PS, UK,Université Clermont Auvergne, INRAE, VetAgro Sup, UMR EPIA, Centre INRAE Clermont-Auvergne-Rhône-Alpes, Saint-Genès-Champanelle 63122, France
| | | | - Eleanor Barnes
- Peter Medawar Building for Pathogen Research, University of Oxford, South Parks Road, Oxford, Oxfordshire OX1 3SY, UK
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Changes of Gut-Microbiota-Liver Axis in Hepatitis C Virus Infection. BIOLOGY 2021; 10:biology10010055. [PMID: 33451143 PMCID: PMC7828638 DOI: 10.3390/biology10010055] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 01/02/2021] [Accepted: 01/08/2021] [Indexed: 12/12/2022]
Abstract
Simple Summary Gut microbiota alteration is linked to many health disorders including hepatitis C virus (HCV) infection. This dysbiosis in turn impacts the coordination between the gut and the liver that is known as the gut–liver-axis. Here, we discuss the latest findings regarding the changes in gut microbiota structure and functionality post HCV infection and its treatment regimens. In addition, we underline the contribution of the microbiota alterations to HCV associated liver complications. Abstract The gut–liver-axis is a bidirectional coordination between the gut, including microbial residents, the gut microbiota, from one side and the liver on the other side. Any disturbance in this crosstalk may lead to a disease status that impacts the functionality of both the gut and the liver. A major cause of liver disorders is hepatitis C virus (HCV) infection that has been illustrated to be associated with gut microbiota dysbiosis at different stages of the disease progression. This dysbiosis may start a cycle of inflammation and metabolic disturbance that impacts the gut and liver health and contributes to the disease progression. This review discusses the latest literature addressing this interplay between the gut microbiota and the liver in HCV infection from both directions. Additionally, we highlight the contribution of gut microbiota to the metabolism of antivirals used in HCV treatment regimens and the impact of these medications on the microbiota composition. This review sheds light on the potential of the gut microbiota manipulation as an alternative therapeutic approach to control the liver complications post HCV infection.
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Abstract
INTRODUCTION Hepatitis C virus (HCV) is divided into 7 genotypes and 67 subtypes. HCV genotype studies reflect the viral transmission patterns as well as human migration routes. In a clinical setting, HCV genotype is a baseline predictor for the sustained virological response (SVR) in chronic hepatitis C patients treated with peginterferon or some direct acting antivirals (DAAs). The Versant HCV genotype 2.0 assay has been globally used for HCV genotyping over a decade. Areas covered: The assay is based on reverse hybridization principle. It is evolved from its former versions, and the accuracy and successful genotyping/subtyping rate are substantially improved. It shows an accuracy of 99-100% for genotypes 1-6. It can also reliably identify subtypes 1a and 1b. However, the assay does not allow a high resolution for many other subtypes. Reasons for indeterminate or inaccurate genotyping/subtyping results are discussed. Expert commentary: Genotyping helps to find the most efficacious and cost-effective treatment regimen. The rapid development of anti-HCV treatment regimens, however, is greatly simplifying laboratory tests. In the near future, the need for HCV genotyping and frequent serial on-treatment HCV RNA tests will decrease along with the wide use of the more potent and pan-genotypic DAA regimens.
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Affiliation(s)
- Ruifeng Yang
- a Peking University People's Hospital, Peking University Hepatology Institute , Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases , Beijing , China
| | - Lai Wei
- a Peking University People's Hospital, Peking University Hepatology Institute , Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases , Beijing , China
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5
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Tsukiyama-Kohara K, Kohara M. Hepatitis C Virus: Viral Quasispecies and Genotypes. Int J Mol Sci 2017; 19:ijms19010023. [PMID: 29271914 PMCID: PMC5795974 DOI: 10.3390/ijms19010023] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 12/16/2017] [Accepted: 12/18/2017] [Indexed: 02/06/2023] Open
Abstract
Hepatitis C virus (HCV) mainly replicates in the cytoplasm, where it easily establishes persistent infection, resulting in chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma. Due to its high rate of mutation, HCV forms viral quasispecies, categorized based on the highly variable regions in the envelope protein and nonstructural 5A protein. HCV possesses seven major genotypes, among which genotype 1 is the most prevalent globally. The distribution of HCV genotypes varies based on geography, and each genotype has a different sensitivity to interferon treatment. Recently-developed direct-acting antivirals (DAAs), which target viral proteases or polymerases, mediate drastically better antiviral effects than previous therapeutics. Although treatment with DAAs has led to the development of drug-resistant HCV mutants, the most recently approved DAAs show improved pan-genomic activity, with a higher barrier to viral resistance.
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Affiliation(s)
- Kyoko Tsukiyama-Kohara
- Joint Faculty of Veterinary Meedicine, Kagoshima University, 1-21-24 Korimoto Kagoshima-city, Kgoshima 890-0065, Japan.
| | - Michinori Kohara
- Department of Microbiology and Cell Biology, Tokyo Metropolitan Institute, 2-1-6 Kamikitazawa, Setagaya-Ku 156-8506, Japan.
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Rodrigo C, Eltahla AA, Bull RA, Luciani F, Grebely J, Dore GJ, Applegate T, Page K, Bruneau J, Morris MD, Cox AL, Osburn W, Kim AY, Shoukry NH, Lauer GM, Maher L, Schinkel J, Prins M, Hellard M, Lloyd AR. Phylogenetic analysis of full-length, early infection, hepatitis C virus genomes among people with intravenous drug use: the InC 3 Study. J Viral Hepat 2017; 24:43-52. [PMID: 27808453 PMCID: PMC5191976 DOI: 10.1111/jvh.12616] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 08/16/2016] [Indexed: 12/11/2022]
Abstract
Cross-continental phylogenetic analysis is important to understand subtle molecular differences of currently circulating hepatitis C virus (HCV) subtypes. Existence of such differences can be crucial in pursuing a universal hepatitis C vaccine. We characterized molecular epidemiology of early HCV infections identified across nine cohorts [North America (n=4), Australia (n=4) and Europe (n=1)] in the International Collaborative of Incident HIV and Hepatitis C in Injecting Cohorts (InC3 ). One hundred and ninety-two full-length HCV genomes were amplified from plasma of incident infections and subjected to next generation sequencing to establish the largest cross-continental, full-length acute HCV genomic data set available to date. Genomes from the most common subtypes (1a: n=94, 2b: n=15 and 3a: n=68) were used in phylogenetic analysis. Using full genome trees, 78 sequences (44%) were found to lie within 29 phylogenetic clusters/pairs defined on the basis of molecular similarity of consensus sequences. Of these, 26 each had exclusively Australian or North American sequences indicating a strong geographical bias for molecular similarity. On further analysis of behavioural and demographic associations, binary logistic regression analysis showed that older age and non-Caucasian ethnicity were significantly associated with clustering. HCV probably evolves in micro-epidemics within geographically isolated communities.
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Affiliation(s)
| | | | | | | | | | | | | | - Kimberly Page
- University of New Mexico, Albuquerque, New Mexico, USA, CRCHUM
| | | | | | - Andrea L. Cox
- Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | | | | | | | | | - Lisa Maher
- The Kirby Institute, UNSW, NSW, Australia
| | - Janke Schinkel
- Academic Medical Center, Amsterdam, The Netherlands,GGD Public Health Service of Amsterdam
| | - Maria Prins
- Academic Medical Center, Amsterdam, The Netherlands,GGD Public Health Service of Amsterdam
| | - Margaret Hellard
- Burnet Institute, Melbourne, VIC, Australia,Monash University, Australia,Alfred Hospital, Melbourne, Australia
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Rodrigo C, Eltahla AA, Bull RA, Grebely J, Dore GJ, Applegate T, Page K, Bruneau J, Morris MD, Cox AL, Osburn W, Kim AY, Schinkel J, Shoukry NH, Lauer GM, Maher L, Hellard M, Prins M, Estes C, Razavi H, Lloyd AR, Luciani F. Historical Trends in the Hepatitis C Virus Epidemics in North America and Australia. J Infect Dis 2016; 214:1383-1389. [PMID: 27571901 DOI: 10.1093/infdis/jiw389] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 08/15/2016] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Bayesian evolutionary analysis (coalescent analysis) based on genetic sequences has been used to describe the origins and spread of rapidly mutating RNA viruses, such as influenza, Ebola, human immunodeficiency virus (HIV), and hepatitis C virus (HCV). METHODS Full-length subtype 1a and 3a sequences from early HCV infections from the International Collaborative of Incident HIV and Hepatitis C in Injecting Cohorts (InC3), as well as from public databases from a time window of 1977-2012, were used in a coalescent analysis with BEAST software to estimate the origin and progression of the HCV epidemics in Australia and North America. Convergent temporal trends were sought via independent epidemiological modeling. RESULTS The epidemic of subtype 3a had more recent origins (around 1950) than subtype 1a (around 1920) in both continents. In both modeling approaches and in both continents, the epidemics underwent exponential growth between 1955 and 1975, which then stabilized in the late 20th century. CONCLUSIONS Historical events that fuelled the emergence and spread of injecting drug use, such as the advent of intravenous medical therapies and devices, and growth in the heroin trade, as well as population mixing during armed conflicts, were likely drivers for the cross-continental spread of the HCV epidemics.
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Affiliation(s)
| | | | | | - Jason Grebely
- The Kirby Institute, UNSW Australia, Sydney, New South Wales
| | - Gregory J Dore
- The Kirby Institute, UNSW Australia, Sydney, New South Wales
| | - Tanya Applegate
- The Kirby Institute, UNSW Australia, Sydney, New South Wales
| | | | | | - Meghan D Morris
- Department of Epidemiology and Biostatistics, University of California, San Francisco
| | - Andrea L Cox
- Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland
| | - William Osburn
- Department of Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland
| | | | - Janke Schinkel
- Department of Internal Medicine, Division of Infectious Diseases, Tropical Medicine and AIDS, Center for Infection and Immunity Amsterdam, Academic Medical Center, Meibergdreef
| | | | | | - Lisa Maher
- The Kirby Institute, UNSW Australia, Sydney, New South Wales
| | | | - Maria Prins
- Department of Internal Medicine, Division of Infectious Diseases, Tropical Medicine and AIDS, Center for Infection and Immunity Amsterdam, Academic Medical Center, Meibergdreef.,GGD Public Health Service of Amsterdam, The Netherlands
| | - Chris Estes
- Center for Disease Analysis, Louisville, Colorado
| | - Homie Razavi
- Center for Disease Analysis, Louisville, Colorado
| | - Andrew R Lloyd
- School of Medical Sciences, Faculty of Medicine.,The Kirby Institute, UNSW Australia, Sydney, New South Wales
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Bensalem A, Selmani K, Hihi N, Bencherifa N, Mostefaoui F, Kerioui C, Pineau P, Debzi N, Berkane S. Eastern region represents a worrying cluster of active hepatitis C in Algeria in 2012. J Med Virol 2016; 88:1394-403. [PMID: 26856380 DOI: 10.1002/jmv.24491] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/31/2016] [Indexed: 12/19/2022]
Abstract
Algeria is the largest country of Africa, peopled with populations living a range of traditional/rural and modern/urban lifestyles. The variations of prevalence of chronic active hepatitis care poorly known on the Algerian territory. We conducted a retrospective survey on all patients (n = 998) referred to our institution in 2012 and confirmed by us for an active hepatitis C. Half of the hepatitis C virus (HCV) isolates were genotyped. Forty Algerian regions out of the 48 were represented in our study. Three geographical clusters (Aïn-Temouchent/SidiBelAbbes, Algiers, and a large Eastern region) with an excess of active hepatitis C were observed. Patients coming from the Eastern cluster (Batna, Khenchela, Oum el Bouaghi, and Tebessa) were strongly over-represented (49% of cases, OR = 14.5, P < 0.0001). The hallmarks of Eastern region were an excess of women (65% vs. 46% in the remaining population, P < 0.0001) and the almost exclusive presence of HCV genotype 1 (93% vs. 63%, P = 0.0001). The core of the epidemics was apparently located in Khenchela (odds ratio = 24.6, P < 0.0001). This situation is plausibly connected with nosocomial transmission or traditional practices as scarification (Hijama), piercing or tattooing, very lively in this region. Distinct hepatitis C epidemics are currently affecting Algerian population. The most worrying situation is observed in rural regions located east of Algeria. J. Med. Virol. 88:1394-1403, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Aïcha Bensalem
- Laboratoire des Hépatites Virales, Institut Pasteur d'Algérie, Sidi Fredj, Algiers, Algeria
| | - Karima Selmani
- Laboratoire des Hépatites Virales, Institut Pasteur d'Algérie, Sidi Fredj, Algiers, Algeria
| | - Narjes Hihi
- Laboratoire des Hépatites Virales, Institut Pasteur d'Algérie, Sidi Fredj, Algiers, Algeria
| | - Nesrine Bencherifa
- Laboratoire des Hépatites Virales, Institut Pasteur d'Algérie, Sidi Fredj, Algiers, Algeria
| | - Fatma Mostefaoui
- Laboratoire des Hépatites Virales, Institut Pasteur d'Algérie, Sidi Fredj, Algiers, Algeria
| | - Cherif Kerioui
- Laboratoire des Hépatites Virales, Institut Pasteur d'Algérie, Sidi Fredj, Algiers, Algeria
| | - Pascal Pineau
- Unité « Organisation nucléaire et oncogenèse », INSERM U993, Institut Pasteur, Paris, France
| | - Nabil Debzi
- Service d'Hépatologie, CHU Mustapha Bacha, Algiers, Algeria
| | - Saadi Berkane
- Service de Gastro-entérologie, CHU Mustapha Bacha, Algiers, Algeria
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Ederth J, Jern C, Norder H, Magnius L, Alm E, Rognsvåg BK, Sundin CG, Brytting M, Esbjörnsson J, Mild M. Molecular characterization of HCV in a Swedish county over 8 years (2002-2009) reveals distinct transmission patterns. Infect Ecol Epidemiol 2016; 6:30670. [PMID: 26854010 PMCID: PMC4744866 DOI: 10.3402/iee.v6.30670] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 01/13/2016] [Accepted: 01/13/2016] [Indexed: 02/06/2023] Open
Abstract
Background Hepatitis C virus (HCV) is a major public health concern and data on its molecular epidemiology in Sweden is scarce. We carried out an 8-year population-based study of newly diagnosed HCV cases in one of Sweden's centrally situated counties, Södermanland (D-county). The aim was to characterize the HCV strains circulating, analyze their genetic relatedness to detect networks, and in combination with demographic data learn more about transmission. Methods Molecular analyses of serum samples from 91% (N=557) of all newly notified cases in D-county, 2002–2009, were performed. Phylogenetic analysis (NS5B gene, 300 bp) was linked to demographic data from the national surveillance database, SmiNet, to characterize D-county transmission clusters. The linear-by-linear association test (LBL) was used to analyze trends over time. Results The most prevalent subtypes were 1a (38%) and 3a (34%). Subtype 1a was most prevalent among cases transmitted via sexual contact, via contaminated blood, or blood products, while subtype 3a was most prevalent among people who inject drugs (PWIDs). Phylogenetic analysis revealed that the subtype 3a sequences formed more and larger transmission clusters (50% of the sequences clustered), while the 1a sequences formed smaller clusters (19% of the sequences clustered), possibly suggesting different epidemics. Conclusion We found different transmission patterns in D-county which may, from a public health perspective, have implications for how to control virus infections by targeted interventions.
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Affiliation(s)
- Josefine Ederth
- Department of Microbiology, Public Health Agency of Sweden, Solna, Sweden;
| | - Camilla Jern
- Stockholm South General Hospital, Stockholm, Sweden
| | - Helené Norder
- Department of Infectious Medicine, Institute of Biomedicine at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Lars Magnius
- Department of Infectious Medicine, Institute of Biomedicine at Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Erik Alm
- Department of Microbiology, Public Health Agency of Sweden, Solna, Sweden
| | | | | | - Mia Brytting
- Department of Microbiology, Public Health Agency of Sweden, Solna, Sweden
| | - Joakim Esbjörnsson
- Department of Microbiology Tumor and Cell Biology, Karolinska Institute, Stockholm, Sweden.,Nuffield Department Medicine, University of Oxford, Oxford, United Kingdom
| | - Mattias Mild
- Department of Microbiology, Public Health Agency of Sweden, Solna, Sweden
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Chen M, Ma Y, Chen H, Luo H, Dai J, Song L, Yang C, Mei J, Yang L, Dong L, Jia M, Lu L. Multiple Introduction and Naturally Occuring Drug Resistance of HCV among HIV-Infected Intravenous Drug Users in Yunnan: An Origin of China's HIV/HCV Epidemics. PLoS One 2015; 10:e0142543. [PMID: 26562015 PMCID: PMC4642981 DOI: 10.1371/journal.pone.0142543] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 10/25/2015] [Indexed: 02/07/2023] Open
Abstract
Background The human immunodeficiency virus 1 (HIV-1) epidemic in China historically stemmed from intravenous drug users (IDUs) in Yunnan. Due to a shared transmission route, hepatitis C virus (HCV)/HIV-1 co-infection is common. Here, we investigated HCV genetic characteristics and baseline drug resistance among HIV-infected IDUs in Yunnan. Methods Blood samples of 432 HIV-1/HCV co-infected IDUs were collected from January to June 2014 in six prefectures of Yunnan Province. Partial E1E2 and NS5B genes were sequenced. Phylogenetic, evolutionary and genotypic drug resistance analyses were performed. Results Among the 293 specimens successfully genotyped, seven subtypes were identified, including subtypes 3b (37.9%, 111/293), 3a (21.8%, 64/293), 6n (14.0%, 41/293), 1b (10.6%, 31/293), 1a (8.2%, 24/293), 6a (5.1%, 15/293) and 6u (2.4%, 7/293). The distribution of HCV subtypes was mostly related to geographic location. Subtypes 3b, 3a, and 6n were detected in all six prefectures, however, the other four subtypes were detected only in parts of the six prefectures. Phylogeographic analyses indicated that 6n, 1a and 6u originated in the western prefecture (Dehong) and spread eastward and showed genetic relatedness with those detected in Burmese. However, 6a originated in the southeast prefectures (Honghe and Wenshan) bordering Vietnam and was transmitted westward. These subtypes exhibited different evolutionary rates (between 4.35×10−4 and 2.38×10−3 substitutions site-1 year-1) and times of most recent common ancestor (tMRCA, between 1790.3 and 1994.6), suggesting that HCV was multiply introduced into Yunnan. Naturally occurring resistance-associated mutations (C316N, A421V, C445F, I482L, V494A, and V499A) to NS5B polymerase inhibitors were detected in direct-acting antivirals (DAAs)-naïve IDUs. Conclusion This work reveals the temporal-spatial distribution of HCV subtypes and baseline HCV drug resistance among HIV-infected IDUs in Yunnan. The findings enhance our understanding of the characteristics and evolution of HCV in IDUs and are valuable for developing HCV prevention and management strategies for this population.
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Affiliation(s)
- Min Chen
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, Yunnan, 650022, China
| | - Yanling Ma
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, Yunnan, 650022, China
| | - Huichao Chen
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, Yunnan, 650022, China
| | - Hongbing Luo
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, Yunnan, 650022, China
| | - Jie Dai
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, Yunnan, 650022, China
| | - Lijun Song
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, Yunnan, 650022, China
| | - Chaojun Yang
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, Yunnan, 650022, China
| | - Jingyuan Mei
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, Yunnan, 650022, China
| | - Li Yang
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, Yunnan, 650022, China
| | - Lijuan Dong
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, Yunnan, 650022, China
| | - Manhong Jia
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, Yunnan, 650022, China
- * E-mail: (MJ); (LL)
| | - Lin Lu
- Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, Yunnan, 650022, China
- College of Public Health, Kunming Medical University, Kunming, Yunnan, 650500, China
- * E-mail: (MJ); (LL)
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11
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Wasitthankasem R, Vongpunsawad S, Siripon N, Suya C, Chulothok P, Chaiear K, Rujirojindakul P, Kanjana S, Theamboonlers A, Tangkijvanich P, Poovorawan Y. Genotypic distribution of hepatitis C virus in Thailand and Southeast Asia. PLoS One 2015; 10:e0126764. [PMID: 25962112 PMCID: PMC4427325 DOI: 10.1371/journal.pone.0126764] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 04/07/2015] [Indexed: 02/06/2023] Open
Abstract
The majority of hepatitis C virus (HCV) infection results in chronic infection, which can lead to liver cirrhosis and hepatocellular carcinoma. Global burden of hepatitis C virus (HCV) is estimated at 150 million individuals, or 3% of the world’s population. The distribution of the seven major genotypes of HCV varies with geographical regions. Since Asia has a high incidence of HCV, we assessed the distribution of HCV genotypes in Thailand and Southeast Asia. From 588 HCV-positive samples obtained throughout Thailand, we characterized the HCV 5’ untranslated region, Core, and NS5B regions by nested PCR. Nucleotide sequences obtained from both the Core and NS5B of these isolates were subjected to phylogenetic analysis, and genotypes were assigned using published reference genotypes. Results were compared to the epidemiological data of HCV genotypes identified within Southeast Asian. Among the HCV subtypes characterized in the Thai samples, subtype 3a was the most predominant (36.4%), followed by 1a (19.9%), 1b (12.6%), 3b (9.7%) and 2a (0.5%). While genotype 1 was prevalent throughout Thailand (27–36%), genotype 3 was more common in the south. Genotype 6 (20.9%) constituted subtype 6f (7.8%), 6n (7.7%), 6i (3.4%), 6j and 6m (0.7% each), 6c (0.3%), 6v and 6xa (0.2% each) and its prevalence was significantly lower in southern Thailand compared to the north and northeast (p = 0.027 and p = 0.030, respectively). Within Southeast Asia, high prevalence of genotype 6 occurred in northern countries such as Myanmar, Laos, and Vietnam, while genotype 3 was prevalent in Thailand and Malaysia. Island nations of Singapore, Indonesia and Philippines demonstrated prevalence of genotype 1. This study further provides regional HCV genotype information that may be useful in fostering sound public health policy and tracking future patterns of HCV spread.
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Affiliation(s)
- Rujipat Wasitthankasem
- Center of Excellence in Clinical Virology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Sompong Vongpunsawad
- Center of Excellence in Clinical Virology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Nipaporn Siripon
- Center of Excellence in Clinical Virology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Chutima Suya
- Chiangrai Prachanukroh Hospital, Chiang Rai, Thailand
| | | | | | - Pairaya Rujirojindakul
- Department of Pathology, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand
| | - Sawan Kanjana
- Regional Blood Center XI Nakhorn Si Thammarat, Thai Red Cross Society, Thung Song District, Nakhon Si Thammarat, Thailand
| | - Apiradee Theamboonlers
- Center of Excellence in Clinical Virology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Pisit Tangkijvanich
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Yong Poovorawan
- Center of Excellence in Clinical Virology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- * E-mail:
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