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Shang J, Qiao Y, Mao G, Qian L, Liu G, Wang H. Bleomycin-Fe(II) agent with potentiality for treating drug-resistant H1N1 influenza virus: A study using electrochemical RNA beacons. Anal Chim Acta 2021; 1180:338862. [PMID: 34538316 DOI: 10.1016/j.aca.2021.338862] [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: 05/28/2021] [Revised: 06/27/2021] [Accepted: 07/19/2021] [Indexed: 10/20/2022]
Abstract
Rapid emergence of new strains of drug-resistant H1N1 influenza viruses calls for effective drugs for the controls prior to their outbreaks. In the present work, electrochemical H1N1 RNA beacons have been newly designed for exploring the potentiality of an anticancer agent of Bleomycin (BLM) with Fe (ΙΙ) ions (BLM-Fe(ΙΙ)) alternatively the treatment of drug-resistant H1N1 strains with H274Y gene mutation. Herein, biotinylated (-) ssRNA of H1N1 virus and its complementary (+) ssRNA were labeled with electrochemical signal probes of ferrocene and anthraquinone, respectively. The resultants were hybridized and conjugated with avidin-modified magnetic beads to create electrochemical RNA beacons. The electrochemical signal variation of the H1N1 RNA beacon treated with the RNA degradation agent of BLM-Fe(ΙΙ) were monitored. Results indicate that the BLM-Fe(ΙΙ) agent could effectively cleave both H1N1 dsRNAs and ssRNAs at selective cutting sites, as evidenced by the mass spectrometry analysis. This indicates that the BLM-Fe(II) agent could be utilized to block the viral-host infection process by curbing the host-cell viral RNA-mRNA transcription or inactivate the viruses through the cleavage of viral genomes. The efficiency of the BLM-Fe(ΙΙ) agent was verified with clinical seasonal H1N1 samples using real-time polymerase chain reaction. The therapeutic gene drug of BLM-Fe(ΙΙ) holds great potential for controlling new strains of H1N1 virus resistant to clinical antiviral drugs. More importantly, the so designed RNA beacons may provide a rapid, sensitive and cost-effective platform of drug screening by monitoring the drug-DNA/RNA interactions.
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Affiliation(s)
- Jizhen Shang
- School of Life Sciences, Huzhou University, Huzhou, Zhejiang Province, 313000, PR China; College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, PR China; Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yuchun Qiao
- School of Life Sciences, Huzhou University, Huzhou, Zhejiang Province, 313000, PR China; College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, PR China
| | - Guojiang Mao
- Henan Key Laboratory of Organic Functional Molecule and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, School of Chemistry and Chemical Engineering, Ministry of Education, Henan Normal University, Xinxiang, 453007, PR China
| | - Lisheng Qian
- Institute of Biomedical and Health Science, School of Life and Health Science, Anhui Science and Technology University, Fengyang, Anhui, 233100, PR China.
| | - Guodong Liu
- Institute of Biomedical and Health Science, School of Life and Health Science, Anhui Science and Technology University, Fengyang, Anhui, 233100, PR China.
| | - Hua Wang
- School of Life Sciences, Huzhou University, Huzhou, Zhejiang Province, 313000, PR China; College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong, 273165, PR China.
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Oliveira MJC, Motta FDC, Siqueira MM, Resende PC, Born PDS, Souza TML, Mesquita M, Oliveira MDLA, Carney S, Mello WAD, Magalhães V. Molecular findings from influenza A(H1N1)pdm09 detected in patients from a Brazilian equatorial region during the pandemic period. Mem Inst Oswaldo Cruz 2014; 109:912-7. [PMID: 25410995 PMCID: PMC4296496 DOI: 10.1590/0074-0276140210] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 09/08/2014] [Indexed: 12/16/2022] Open
Abstract
After the World Health Organization officially declared the end of the first pandemic
of the XXI century in August 2010, the influenza A(H1N1)pdm09 virus has been
disseminated in the human population. In spite of its sustained circulation, very
little on phylogenetic data or oseltamivir (OST) resistance is available for the
virus in equatorial regions of South America. In order to shed more light on this
topic, we analysed the haemagglutinin (HA) and neuraminidase (NA) genes of influenza
A(H1N1)pdm09 positive samples collected during the pandemic period in the Pernambuco
(PE), a northeastern Brazilian state. Complete HA sequences were compared and amino
acid changes were related to clinical outcome. In addition, the H275Y substitution in
NA, associated with OST resistance, was investigated by pyrosequencing. Samples from
PE were grouped in phylogenetic clades 6 and 7, being clustered together with
sequences from South and Southeast Brazil. The D222N/G HA gene mutation, associated
with severity, was found in one deceased patient that was pregnant. Additionally, the
HA mutation K308E, which appeared in Brazil in 2010 and was only detected worldwide
the following year, was identified in samples from hospitalised cases. The resistance
marker H275Y was not identified in samples tested. However, broader studies are
needed to establish the real frequency of resistance in this Brazilian region.
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Affiliation(s)
| | - Fernando do Couto Motta
- Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Marilda M Siqueira
- Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Paola Cristina Resende
- Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Priscilla da Silva Born
- Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Thiago Moreno L Souza
- Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Milene Mesquita
- Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | | | - Sharon Carney
- Laboratório de Vírus Respiratórios e do Sarampo, Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
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Duan S, Govorkova EA, Bahl J, Zaraket H, Baranovich T, Seiler P, Prevost K, Webster RG, Webby RJ. Epistatic interactions between neuraminidase mutations facilitated the emergence of the oseltamivir-resistant H1N1 influenza viruses. Nat Commun 2014; 5:5029. [PMID: 25297528 PMCID: PMC4197134 DOI: 10.1038/ncomms6029] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Accepted: 08/19/2014] [Indexed: 01/06/2023] Open
Abstract
Oseltamivir-resistant H1N1 influenza viruses carrying the H275Y neuraminidase mutation predominated worldwide during the 2007–2009 seasons. While several neuraminidase substitutions were found to be necessary to counteract the adverse effects of H275Y, the order and impact of evolutionary events involved remain elusive. Here, we reconstruct H1N1 neuraminidase phylogeny during 1999–2009, estimate the timing and order of crucial amino acid changes, and evaluate their impact on the biological outcome of the H275Y mutation. Of the twelve neuraminidase substitutions that occurred during 1999–2009, five (chronologically, V234M, R222Q, K329E, D344N, H275Y, and D354G) are necessary for maintaining full neuraminidase function in the presence of the H275Y mutation by altering protein accumulation or enzyme affinity/activity. The sequential emergence and cumulative effects of these mutations clearly illustrate a role for epistasis in shaping the emergence and subsequent evolution of a drug-resistant virus population, which can be useful in understanding emergence of novel viral phenotypes of influenza.
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Affiliation(s)
- Susu Duan
- Department of Infectious Diseases, St Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 330, Memphis, Tennessee 38105, USA
| | - Elena A Govorkova
- Department of Infectious Diseases, St Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 330, Memphis, Tennessee 38105, USA
| | - Justin Bahl
- 1] School of Public Health, The University of Texas Health Science Center at Houston, 1200 Pressler Street, Houston, Texas 77030, USA [2] Program in Emerging Infectious Diseases, Duke-National University of Singapore Graduate Medical School, 8 College Road, Singapore 169857, Singapore
| | - Hassan Zaraket
- Department of Infectious Diseases, St Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 330, Memphis, Tennessee 38105, USA
| | - Tatiana Baranovich
- Department of Infectious Diseases, St Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 330, Memphis, Tennessee 38105, USA
| | - Patrick Seiler
- Department of Infectious Diseases, St Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 330, Memphis, Tennessee 38105, USA
| | - Kristi Prevost
- Department of Infectious Diseases, St Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 330, Memphis, Tennessee 38105, USA
| | - Robert G Webster
- Department of Infectious Diseases, St Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 330, Memphis, Tennessee 38105, USA
| | - Richard J Webby
- Department of Infectious Diseases, St Jude Children's Research Hospital, 262 Danny Thomas Place, Mail Stop 330, Memphis, Tennessee 38105, USA
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Quiñones-Mateu ME, Avila S, Reyes-Teran G, Martinez MA. Deep sequencing: becoming a critical tool in clinical virology. J Clin Virol 2014; 61:9-19. [PMID: 24998424 DOI: 10.1016/j.jcv.2014.06.013] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 06/12/2014] [Accepted: 06/14/2014] [Indexed: 02/07/2023]
Abstract
Population (Sanger) sequencing has been the standard method in basic and clinical DNA sequencing for almost 40 years; however, next-generation (deep) sequencing methodologies are now revolutionizing the field of genomics, and clinical virology is no exception. Deep sequencing is highly efficient, producing an enormous amount of information at low cost in a relatively short period of time. High-throughput sequencing techniques have enabled significant contributions to multiples areas in virology, including virus discovery and metagenomics (viromes), molecular epidemiology, pathogenesis, and studies of how viruses to escape the host immune system and antiviral pressures. In addition, new and more affordable deep sequencing-based assays are now being implemented in clinical laboratories. Here, we review the use of the current deep sequencing platforms in virology, focusing on three of the most studied viruses: human immunodeficiency virus (HIV), hepatitis C virus (HCV), and influenza virus.
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Affiliation(s)
- Miguel E Quiñones-Mateu
- University Hospital Translational Laboratory, University Hospitals Case Medical Center, Cleveland, OH, USA; Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Santiago Avila
- Instituto Nacional de Enfermedades Respiratorias, Mexico City, Mexico; Centro de Investigaciones en Enfermedades Infecciosas, Mexico City, Mexico
| | - Gustavo Reyes-Teran
- Instituto Nacional de Enfermedades Respiratorias, Mexico City, Mexico; Centro de Investigaciones en Enfermedades Infecciosas, Mexico City, Mexico
| | - Miguel A Martinez
- Fundació irsicaixa, Universitat Autònoma de Barcelona, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
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Gillman A, Muradrasoli S, Söderström H, Nordh J, Bröjer C, Lindberg RH, Latorre-Margalef N, Waldenström J, Olsen B, Järhult JD. Resistance mutation R292K is induced in influenza A(H6N2) virus by exposure of infected mallards to low levels of oseltamivir. PLoS One 2013; 8:e71230. [PMID: 23951116 PMCID: PMC3741332 DOI: 10.1371/journal.pone.0071230] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 06/29/2013] [Indexed: 01/24/2023] Open
Abstract
Resistance to neuraminidase inhibitors (NAIs) is problematic as these drugs constitute the major treatment option for severe influenza. Extensive use of the NAI oseltamivir (Tamiflu®) results in up to 865 ng/L of its active metabolite oseltamivir carboxylate (OC) in river water. There one of the natural reservoirs of influenza A, dabbling ducks, can be exposed. We previously demonstrated that an influenza A(H1N1) virus in mallards (Anas platyrhynchos) exposed to 1 µg/L of OC developed oseltamivir resistance through the mutation H274Y (N2-numbering). In this study, we assessed the resistance development in an A(H6N2) virus, which belongs to the phylogenetic N2 group of neuraminidases with distinct functional and resistance characteristics. Mallards were infected with A(H6N2) while exposed to 120 ng/L, 1.2 µg/L or 12 µg/L of OC in their sole water source. After 4 days with 12 µg/L of OC exposure, the resistance mutation R292K emerged and then persisted. Drug sensitivity was decreased ≈13,000-fold for OC and ≈7.8-fold for zanamivir. Viral shedding was similar when comparing R292K and wild-type virus indicating sustained replication and transmission. Reduced neuraminidase activity and decrease in recovered virus after propagation in embryonated hen eggs was observed in R292K viruses. The initial, but not the later R292K isolates reverted to wild-type during egg-propagation, suggesting a stabilization of the mutation, possibly through additional mutations in the neuraminidase (D113N or D141N) or hemagglutinin (E216K). Our results indicate a risk for OC resistance development also in a N2 group influenza virus and that exposure to one NAI can result in a decreased sensitivity to other NAIs as well. If established in influenza viruses circulating among wild birds, the resistance could spread to humans via re-assortment or direct transmission. This could potentially cause an oseltamivir-resistant pandemic; a serious health concern as preparedness plans rely heavily on oseltamivir before vaccines can be mass-produced.
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Affiliation(s)
- Anna Gillman
- Section of Infectious Diseases, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Shaman Muradrasoli
- Section of Bacteriology and Food Safety, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | | | - Johan Nordh
- Section of Infectious Diseases, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Caroline Bröjer
- Section of Pathology, Pharmacology and Toxicology, Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | | | - Neus Latorre-Margalef
- Section for Zoonotic Ecology and Epidemiology, School of Natural Sciences, Linnaeus University, Kalmar, Sweden
| | - Jonas Waldenström
- Section for Zoonotic Ecology and Epidemiology, School of Natural Sciences, Linnaeus University, Kalmar, Sweden
| | - Björn Olsen
- Section of Infectious Diseases, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Josef D. Järhult
- Section of Infectious Diseases, Department of Medical Sciences, Uppsala University, Uppsala, Sweden
- * E-mail:
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Cho HG, Choi JH, Lee HK, Mun SK, Lee JB, Jho EH, Kang C, Lim YH. Oseltamivir-resistant influenza viruses isolated in South Korea from 2005 to 2010. Arch Virol 2013; 158:2365-70. [PMID: 23690054 DOI: 10.1007/s00705-013-1734-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 04/13/2013] [Indexed: 11/30/2022]
Abstract
South Korean isolates of oseltamivir-resistant influenza viruses from 2005-2010 were investigated with a total 491 influenza viruses identified from 1702 specimens. Neuraminidase genes from 342 influenza viruses (71 A/H1N1, 74 pandemic A/H1N1 2009, 117 A/H3N2, and 80 B) were analyzed by RT-PCR with molecular markers for oseltamivir resistance. The H274Y mutation in the NA protein was identified in 100 % (n=40) of A/H1N1 viruses circulating in 2008-2009. Influenza A/H1N1 viruses harboring the H274Y substitution exhibited, on average, a 626-fold reduction in oseltamivir susceptibility and clustered with the A/Norway/1736/2007 strain. Close and timely monitoring for resistance to clinically available influenza antivirals should be consistently performed.
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Affiliation(s)
- Han-Gil Cho
- Gyeonggi-do Institute of Health and Environment, Suwon, Gyeonggi-do, South Korea
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7
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Janjua NZ, Skowronski DM, De Serres G, Dickinson J, Crowcroft NS, Taylor M, Winter AL, Hottes TS, Fonseca K, Charest H, Drews SJ, Sabaiduc S, Bastien N, Li Y, Gardy JL, Petric M. Estimates of influenza vaccine effectiveness for 2007-2008 from Canada's sentinel surveillance system: cross-protection against major and minor variants. J Infect Dis 2012; 205:1858-68. [PMID: 22492921 DOI: 10.1093/infdis/jis283] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES To estimate influenza vaccine effectiveness (VE) for the 2007-2008 season and assess the sentinel surveillance system in Canada for monitoring virus evolution and impact on VE. METHODS Nasal/nasopharyngeal swabs and epidemiologic details were collected from patients presenting to a sentinel physician within 7 days of influenza-like illness onset. Cases tested positive for influenza A/B virus by real-time polymerase chain reaction; controls tested negative. Hemagglutination inhibition (HI) and gene sequencing explored virus relatedness to vaccine. VE was calculated as 1 minus the odds ratio for influenza in vaccinated versus nonvaccinated participants, with adjustment for confounders. RESULTS Of 1425 participants, 21% were vaccinated. Influenza virus was detected in 689 (48%), of which isolates from 663 were typed/subtyped: 189 (29%) were A/H1, 210 (32%) were A/H3, and 264 (40%) were B. Of A/H1N1 isolates, 6% showed minor HI antigenic mismatch to vaccine, with greater variation based on genetic identity. All A/H3N2 isolates showed moderate antigenic mismatch, and 98% of influenza B virus isolates showed major lineage-level mismatch to vaccine. Adjusted VE for A/H1N1, A/H3N2, and B components was 69% (95% confidence interval [CI], 44%-83%), 57% (95% CI, 32%-73%), and 55% (95% CI, 32%-70%), respectively, with an overall VE of 60% (95% CI, 45%-71%). CONCLUSIONS Detailed antigenic and genotypic analysis of influenza viruses was consistent with epidemiologic estimates of VE showing cross-protection. A routine sentinel surveillance system that combines detailed virus and VE monitoring annually, as modeled in Canada, may guide improved vaccine selection and protection.
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Pabbaraju K, Wong S, Drews SJ. Rethinking approaches to improve the utilization of nucleic acid amplification tests for detection and characterization of influenza A in diagnostic and reference laboratories. Future Microbiol 2011; 6:1443-60. [PMID: 22122441 DOI: 10.2217/fmb.11.126] [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] Open
Abstract
Influenza A virus (IFVA) is a significant cause of respiratory infections worldwide and was also responsible for a recent pandemic in 2009. Laboratory identification of IFVA can guide antiviral therapy, assist in cohorting of patients and prevent antibiotic use. Characterization of the virus can track the emergence of novel strains, identify resistance and determine how circulating strains match with vaccine components. The gold standard for detection and characterization of IFVA is nucleic acid amplification technology (e.g., reverse transcriptase PCR [RT-PCR]), which must contend with a constantly evolving viral genome. Although molecular technology has been available for over two decades, there is still an operational gap between assay design and utilization of these tests for the diagnosis and characterization of IFVA. This review will discuss issues surrounding the implementation and use of RT-PCR for the identification and characterization of IFVA, and speculate on why RT-PCR has not been used more widely in clinical laboratories or moved closer to the patient. Newer, less widely used technologies that may change our laboratory practices will be identified and the authors will close with an attempt to identify some future applications of RT-PCR-based technologies for the detection and characterization of IFVA.
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Affiliation(s)
- Kanti Pabbaraju
- Provincial Laboratory for Public Health, Microbiology, 3030 Hospital Drive NW, Calgary, Alberta T2N 4W4, Canada
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9
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Escuret V, Ferraris O, Lina B. The antiviral resistance of influenza virus. ACTA ACUST UNITED AC 2011. [DOI: 10.2217/thy.11.79] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Synergistic activity of baicalein with ribavirin against influenza A (H1N1) virus infections in cell culture and in mice. Antiviral Res 2011; 91:314-20. [DOI: 10.1016/j.antiviral.2011.07.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 06/01/2011] [Accepted: 07/07/2011] [Indexed: 11/18/2022]
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Cost C, Brock E, Adams-Huet B, Siegel JD, Ardura MI. 2009 pandemic influenza A (H1N1) virus infection in pediatric oncology and hematopoietic stem cell transplantation patients. Pediatr Blood Cancer 2011; 56:127-33. [PMID: 20973099 PMCID: PMC2992087 DOI: 10.1002/pbc.22771] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
BACKGROUND Pediatric oncology and hematopoietic stem cell transplantation (HSCT) patients are at high risk for influenza infection and its associated complications. Little is known about infection with novel 2009 influenza A (H1N1) in this population. PROCEDURE Prospective laboratory surveillance identified all children with positive influenza test results from 4/27/09-12/5/09. 2009 H1N1 infection was confirmed by PCR subtyping; cases in which subtyping was not performed were considered probable. Medical records of all pediatric oncology and HSCT cases were reviewed. RESULTS Thirty children with cancer or HSCT had laboratory-confirmed influenza A. Patients with ALL (18), CNS tumors (4), CML (1), Ewing sarcoma (1), Hodgkin lymphoma (1), LCH (1), severe aplastic anemia (1), and HSCT (3), had confirmed (5) and probable (25) H1N1 by rapid (22; 73%), DFA (4; 13%), or RVP (4; 13%) assays. Most frequent presenting signs and symptoms were fever (93%; median 38.6°C), cough (97%), and rhinorrhea (83%). Ten patients required hospitalization for a median of 5 days, most commonly for fever and neutropenia (8). Imaging demonstrated lower respiratory tract involvement in three patients. There were no concomitant bacteremias; one patient had rhinovirus co-infection. Three patients required ICU care; 1 developed ARDS, multi-organ failure, and died after 5 days. Chemotherapy was delayed in five patients. Oseltamivir was administered to 28 patients; 1 patient developed an oseltamivir-resistant strain and was treated with zanamivir. CONCLUSIONS 2009 influenza A H1N1 infection in children with cancer and HSCT is mild in most patients, but can lead to serious complications.
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Affiliation(s)
- Carrye Cost
- Department of Pediatrics, Division of Oncology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Evangeline Brock
- Department of Pathology, Children's Medical Center Dallas Virology Laboratory, Dallas, TX
| | - Beverley Adams-Huet
- Department of Clinical Sciences, University of Texas Southwestern Medical Center, Dallas, TX
| | - Jane D. Siegel
- Department of Infectious Diseases, University of Texas Southwestern Medical Center, Dallas, TX
| | - Monica I. Ardura
- Department of Infectious Diseases, University of Texas Southwestern Medical Center, Dallas, TX
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Casalegno JS, Bouscambert-Duchamp M, Caro V, Schuffenecker I, Sabatier M, Traversier A, Valette M, Lina B, Ferraris O, Escuret V. Oseltamivir-resistant influenza A(H1N1) viruses in south of France, 2007/2009. Antiviral Res 2010; 87:242-8. [PMID: 20665943 DOI: 10.1016/j.antiviral.2010.05.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Influenza A(H1N1) viruses resistant to oseltamivir carboxylate (OC) emerged in 2007/2008 in the absence of antiviral pressure. These OC-resistant A(H1N1) viruses had a better fitness than the sensitive ones as they were 100% prevalent in 2008/2009. To better understand the role of the neuraminidase (NA) affinity in the emergence of these OC-resistant A(H1N1) viruses we compared the NA properties among A(H1N1) clinical isolates in south of France between 2005 and 2009 and reference strains from 1977 to 2007, using NA inhibition assays, kinetic analyses of NA activities, and sequence analysis of viral NA and hemagglutinin (HA). In 2007/2008, among 374 A(H1N1) isolates tested, 38% were resistant to OC with a mean IC50 of 564+/-357 nM. The mean Km of OC-sensitive isolates (H275) was significantly lower (22.6+/- 4.7 microM) than the Km of previous reference strains (44.9+/- 5 microM) and the mean Km of the OC-resistant isolates (Y275) (37.2 +/- 7.7 microM). The combination of different amino acid mutations in N1 particularly the D344N could explain the higher NA affinity of A/Brisbane/59/2007 related variants compared to the previous A(H1N1) strains and the H275Y mutation allowed to retrieve Km values near 40 microM.
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Affiliation(s)
- Jean-Sébastien Casalegno
- Hospices Civils de Lyon, National Influenza Centre (South of France), Laboratory of Virology - Bât A3, 59 Boulevard Pinel, F-69677 Bron Cedex, France
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Development of a novel bead-based multiplex PCR assay for combined subtyping and oseltamivir resistance genotyping (H275Y) of seasonal and pandemic H1N1 influenza A viruses. J Clin Virol 2010; 49:277-82. [PMID: 20846903 DOI: 10.1016/j.jcv.2010.08.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Revised: 08/10/2010] [Accepted: 08/17/2010] [Indexed: 11/21/2022]
Abstract
BACKGROUND The identification of influenza A virus subtypes in clinical specimens is becoming increasingly important for clinical laboratories since seasonal H1N1, H3N2 and pandemic H1N1 influenza A viruses can have defined antiviral resistance patterns and subtyping can be used as a surrogate for antiviral resistance testing. OBJECTIVES To develop a novel multiplex PCR (M-PCR) assay for the combined identification of influenza A subtype and oseltamivir resistance (H275Y) genotype in a combined assay format using Luminex xMAP™ technology. STUDY DESIGN The M-PCR assay employed five degenerate primers to amplify the hemagglutinin (HA) and neuraminidase (NA) genes and eight tagged primers in a target specific primer extension reaction (TSPE). Products were analysed using xTAG™ beads containing specific anti-tag oligonucleotides. RESULTS M-PCR correctly identified the subtype for 54/54 specimens that were influenza A positive, including 13/13 seasonal H3N2, 17/17 seasonal H1N1 and 24/24 pandemic H1N1 for both HA and NA genes. For oseltamivir resistance the M-PCR assay correctly identified 41/41 H1N1 viruses as oseltamivir sensitive (H275) or resistant (H275Y). Analysis of sequential specimens from two immunocompromised patients revealed the appearance of the H275Y allele at earlier time points after infection compared with Sanger sequencing. CONCLUSIONS The combined M-PCR assay correctly subtyped seasonal and pandemic influenza A viruses and accurately detected the H275Y oseltamivir resistance allele. This assay should provide useful information to clinicians for appropriate patient management.
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Matsuzaki Y, Mizuta K, Aoki Y, Suto A, Abiko C, Sanjoh K, Sugawara K, Takashita E, Itagaki T, Katsushima Y, Ujike M, Obuchi M, Odagiri T, Tashiro M. A two-year survey of the oseltamivir-resistant influenza A(H1N1) virus in Yamagata, Japan and the clinical effectiveness of oseltamivir and zanamivir. Virol J 2010; 7:53. [PMID: 20202225 PMCID: PMC2847566 DOI: 10.1186/1743-422x-7-53] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Accepted: 03/05/2010] [Indexed: 12/18/2022] Open
Abstract
Background Oseltamivir is the preferred antiviral drug for influenza, but oseltamivir-resistant A(H1N1) viruses have circulated worldwide since the 2007-2008 influenza season. We aimed to determine the rate of oseltamivir resistance among A(H1N1) isolates from Yamagata, Japan, to compare the virological characteristics between isolates from the 2007-2008 and 2008-2009 seasons, and to evaluate the clinical effectiveness of oseltamivir. Results Oseltamivir resistance, determined by detecting the H275Y mutation in the neuraminidase (NA) gene, was observed in 2.5% (2 of 79) and 100% (77 of 77) of isolates from the 2007-2008 and 2008-2009 seasons, respectively. Antigenic analysis suggested that antigenically different variants of A(H1N1) viruses circulated in the 2008-2009 season. Growth testing demonstrated that the ability of the 2008-2009 isolates to replicate in MDCK cells was similar to those of the oseltamivir-susceptible isolates from the 2007-2008 season. A phylogenetic analysis revealed that two oseltamivir-resistant viruses isolated in the 2007-2008 season were closely related to other oseltamivir-susceptible viruses in Yamagata but were different from oseltamivir-resistant viruses isolated in Europe and North America in the 2007-2008 season. The oseltamivir-resistant viruses isolated in Japan in the 2008-2009 season were phylogenetically similar to oseltamivir-resistant isolates from Europe and North America during the 2007-2008 season. Furthermore, the median duration of fever after the start of oseltamivir treatment was significantly longer in oseltamivir-resistant cases (2 days; range 1-6 days) than in oseltamivir-susceptible cases (1.5 days: range 1-2 days) (P = 0.0356). Conclusion Oseltamivir-resistant A(H1N1) isolates from Yamagata in the 2007-2008 season might have acquired resistance through the use of oseltamivir, and the 2008-2009 oseltamivir-resistant isolates might have been introduced into Japan and circulated throughout the country. Influenza surveillance to monitor oseltamivir-resistance would aid clinicians in determining an effective antiviral treatment strategy.
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Affiliation(s)
- Yoko Matsuzaki
- Course of Clinical Nursing, Yamagata University Faculty of Medicine, Yamagata 990-9585, Japan.
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Picone O, Ami O, Vauloup-Fellous C, Martinez V, Guillet M, Dupont-Bernabé C, Donnadieu AC, Trichot C, Senat MV, Fernandez H, Frydman R. Pandémie de grippe A H1N1 2009 et grossesse : épidémiologie, diagnostic et prise en charge. ACTA ACUST UNITED AC 2009; 38:615-28. [DOI: 10.1016/j.jgyn.2009.09.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Revised: 09/18/2009] [Accepted: 09/23/2009] [Indexed: 12/16/2022]
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