Detection of Oseltamivir-Resistant Influenza A H1N1 Viruses with H274Y Mutation during the 2007 - 2008 Influenza Season in Turkey

Volume: 69 Number: 1 March 1, 2012
  • Ahmet Çarhan
  • Nurhan Albayrak
  • Ayşe Başak Altaş
  • Yavuz Uyar
  • Etem Özkaya
TR EN

Detection of Oseltamivir-Resistant Influenza A H1N1 Viruses with H274Y Mutation during the 2007 - 2008 Influenza Season in Turkey

Abstract

Objective: In the beginning of the 2007-2008 influenza season in Northern Hemisphere, the frequency of influenza A H1N1 viruses bearing a previously defined oseltamivir resistance increased dramatically. This is conferring to the amino acid exchange from histidine to tyrosine at position 274 H274Y in neuraminidase NA gene. The overall frequency of oseltamivir resistance in influenza A H1N1 strains in Europe was reported as being 25%. Although it varied between countries, it was shown that the highest percentage was in Norway 67% , and the lowest was in Spain 2% . In this study, it was aimed to evaluate the oseltamivir resistance in influenza A H1N1 isolates from Turkey during the 20072008 influenza season.Method: During November 2007 – May 2008, 20 samples were randomly selected between 73 influenza A H1N1 positive samples detected with real-time RT- PCR in National Influenza Center NIC of Refik Saydam National Public Health Agency RSNPHA . To detect such resistant viruses in Turkey, an RT-PCR assay was performed targeting amino acid position at 274 in NA gene of H1N1 influenza strain to investigate the presence or absence of histidine to tyrosine mutation The NA genes of influenza, viruses were sequenced. The presence of resistance was inferred by comparison with published sequences and known resistant mutations. Results:In our study, the histidine H to tyrosine Y substitution at position 274 275 in N1 numbering of the NA gene was evaluated. The change indicating resistance to oseltamivir was observed in two isolates of the total 20 influenza A H1N1 strains 10% . The partial sequence analysis results of NA segments were submitted to the National Center for Biotechnology Information NCBI GenBank with accession numbers GQ369800, GQ369799, GQ369798. Conclusion: Resistance to neuraminidase inhibitors was determined by NA gene sequencing in the isolates of A/H1N1 strains taken from central and eastern parts of Turkey by monitoring the presence of H274Y oseltamivir-resistant in 2008.

Keywords

References

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Details

Primary Language

English

Subjects

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Journal Section

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Authors

Ahmet Çarhan This is me

Nurhan Albayrak This is me

Ayşe Başak Altaş This is me

Yavuz Uyar This is me

Etem Özkaya This is me

Publication Date

March 1, 2012

Submission Date

-

Acceptance Date

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Published in Issue

Year 2012 Volume: 69 Number: 1

APA
Çarhan, A., Albayrak, N., Altaş, A. B., Uyar, Y., & Özkaya, E. (2012). Detection of Oseltamivir-Resistant Influenza A H1N1 Viruses with H274Y Mutation during the 2007 - 2008 Influenza Season in Turkey. Türk Hijyen Ve Deneysel Biyoloji Dergisi, 69(1), 1-16. https://izlik.org/JA49MN66MF
AMA
1.Çarhan A, Albayrak N, Altaş AB, Uyar Y, Özkaya E. Detection of Oseltamivir-Resistant Influenza A H1N1 Viruses with H274Y Mutation during the 2007 - 2008 Influenza Season in Turkey. Turk Hij Den Biyol Derg. 2012;69(1):1-16. https://izlik.org/JA49MN66MF
Chicago
Çarhan, Ahmet, Nurhan Albayrak, Ayşe Başak Altaş, Yavuz Uyar, and Etem Özkaya. 2012. “Detection of Oseltamivir-Resistant Influenza A H1N1 Viruses With H274Y Mutation During the 2007 - 2008 Influenza Season in Turkey”. Türk Hijyen Ve Deneysel Biyoloji Dergisi 69 (1): 1-16. https://izlik.org/JA49MN66MF.
EndNote
Çarhan A, Albayrak N, Altaş AB, Uyar Y, Özkaya E (March 1, 2012) Detection of Oseltamivir-Resistant Influenza A H1N1 Viruses with H274Y Mutation during the 2007 - 2008 Influenza Season in Turkey. Türk Hijyen ve Deneysel Biyoloji Dergisi 69 1 1–16.
IEEE
[1]A. Çarhan, N. Albayrak, A. B. Altaş, Y. Uyar, and E. Özkaya, “Detection of Oseltamivir-Resistant Influenza A H1N1 Viruses with H274Y Mutation during the 2007 - 2008 Influenza Season in Turkey”, Turk Hij Den Biyol Derg, vol. 69, no. 1, pp. 1–16, Mar. 2012, [Online]. Available: https://izlik.org/JA49MN66MF
ISNAD
Çarhan, Ahmet - Albayrak, Nurhan - Altaş, Ayşe Başak - Uyar, Yavuz - Özkaya, Etem. “Detection of Oseltamivir-Resistant Influenza A H1N1 Viruses With H274Y Mutation During the 2007 - 2008 Influenza Season in Turkey”. Türk Hijyen ve Deneysel Biyoloji Dergisi 69/1 (March 1, 2012): 1-16. https://izlik.org/JA49MN66MF.
JAMA
1.Çarhan A, Albayrak N, Altaş AB, Uyar Y, Özkaya E. Detection of Oseltamivir-Resistant Influenza A H1N1 Viruses with H274Y Mutation during the 2007 - 2008 Influenza Season in Turkey. Turk Hij Den Biyol Derg. 2012;69:1–16.
MLA
Çarhan, Ahmet, et al. “Detection of Oseltamivir-Resistant Influenza A H1N1 Viruses With H274Y Mutation During the 2007 - 2008 Influenza Season in Turkey”. Türk Hijyen Ve Deneysel Biyoloji Dergisi, vol. 69, no. 1, Mar. 2012, pp. 1-16, https://izlik.org/JA49MN66MF.
Vancouver
1.Ahmet Çarhan, Nurhan Albayrak, Ayşe Başak Altaş, Yavuz Uyar, Etem Özkaya. Detection of Oseltamivir-Resistant Influenza A H1N1 Viruses with H274Y Mutation during the 2007 - 2008 Influenza Season in Turkey. Turk Hij Den Biyol Derg [Internet]. 2012 Mar. 1;69(1):1-16. Available from: https://izlik.org/JA49MN66MF