Biopolym. Cell. 2016; 32(5):377-380.
Viruses and Cell
Phylogenetic analysis of influenza A viruses (H1N1)pdm circulating during 2014–2015 epidemic season in Ukraine
1Radchenko L. V., 1, 2Smutko O. Yu., 1Fesenko A. Yu., 1Mironenko A. P.
  1. Gromashevsky L. V. Institute of Epidemiology and Infection Diseases, NAMS of Ukraine
    5, Amosova Str., Kyiv, Ukraine, 03038
  2. Educational and Scientific Center "Institute of Biology",
    Taras Shevchenko National University of Kyiv
    64/13, Volodymyrska Str., Kyiv, Ukraine, 01601

Abstract

Aim. To analyze the pandemic influenza A(H1N1) strains that circulated in Ukraine during 2014–2015 epidemic season. Methods. Real-time polymerase chain reaction (RT-PCR). The phylogenetic trees were constructed using MEGA 6 software. Results. The strains, that were circulating in Ukraine were similar to those of the A/California/07/2009 (H1N1) vaccine strain. Most strains belonged to the clade 6B. The H275Y mutation in the neuraminidase (NA) gene was identified, that confers resistance to oseltamivir. Conclusions. Based on the nucleotide sequences of HA and NA genes, we constructed the influenza virus phylogenetic trees. The influenza virus isolated in 2014–2015 epidemic season had a specific mutation, associated with resistance to antiviral drugs such as oseltamivir.
Keywords: A(H1N1)pdm influenza viruses, mutation, phylogenetic analysis, isolate

References

[1] Ramos AP, Herrera BA, Ramírez OV, García AA, Jiménez MM, Valdés CS, Fernández AG, González G, Fernández SI, Báez GG, Espinosa BH. Molecular and phylogenetic analysis of influenza A H1N1 pandemic viruses in Cuba, May 2009 to August 2010. Int J Infect Dis. 2013;17(7):e565-7.
[2] Barrero PR, Viegas M, Valinotto LE, Mistchenko AS. Genetic and phylogenetic analyses of influenza A H1N1pdm virus in Buenos Aires, Argentina. J Virol. 2011;85(2):1058-66.
[3] Parida M, Dash PK, Kumar JS, Joshi G, Tandel K, Sharma S, Srivastava A, Agarwal A, Saha A, Saraswat S, Karothia D, Malviya V. Emergence of influenza A (H1N1)pdm09 genogroup 6B and drug resistant virus, India, January to May 2015. Euro Surveill. 2016;21(5):6-11.
[4] World Health Organization (WHO). CDC protocol of realtime RT-PCR for infl uenza H1N1. World Health Orga ni zation, Geneva, Switzerland. 30 April 2009.
[5] Oh DY, Barr IG, Mosse JA, Laurie KL. MDCK-SIAT1 cells show improved isolation rates for recent human influenza viruses compared to conventional MDCK cells. J Clin Microbiol. 2008;46(7):2189-94.
[6] Saitou N, Nei M. The neighbor-joining method: a new method for reconstructing phylogenetic trees. Mol Biol Evol. 1987;4(4):406-25.
[7] Kimura M. A simple method for estimating evolutionary rates of base substitutions through comparative studies of nucleotide sequences. J Mol Evol. 1980;16(2):111-20.
[8] Felsenstein J. Confidence limits on phylogenies: an approach using the bootstrap. Evolution. 1985;39(4):783-91.
[9] Tamura K, Stecher G, Peterson D, Filipski A, Kumar S. MEGA6: Molecular Evolutionary Genetics Analysis version 6.0. Mol Biol Evol. 2013;30(12):2725-9.
[10] Kilander A, Rykkvin R, Dudman SG, Hungnes O. Observed association between the HA1 mutation D222G in the 2009 pandemic influenza A(H1N1) virus and severe clinical outcome, Norway 2009-2010. Euro Surveill. 2010;15(9). pii: 19498.
[11] Lackenby A, Hungnes O, Dudman SG, Meijer A, Paget WJ, Hay AJ, Zambon MC. Emergence of resistance to oseltamivir among influenza A(H1N1) viruses in Europe. Euro Surveill. 2008;13(5). pii: 8026.