ArticleTropical animal health and production2010
Sequence and phylogenetic analysis of the haemagglutinin genes of H9N2 avian influenza viruses isolated from commercial chickens in Iran.
Article in Tropical animal health and production, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 25 citations in OpenAlex.
- Phylogenetic Analysis of Hemagglutinin Gene and Evaluation of the Viral Shedding of H9N2 Avian Influenza Viruses Using Real-time RT-PCR in SPF Chickens.Archives of Razi Institute · 2020Article
- Full-genome characterization and genetic analysis of a H9N2 virus in commercial broilers in Iran, 2017.Tropical animal health and production · 2019Article
- A brief summary of the epidemiology and genetic relatedness of avian influenza H9N2 virus in birds and mammals in the Middle East and North Africa.Epidemiology and infection · 2017Review
- Article
- Molecular characterization of H9N2 avian influenza viruses isolated from vaccinated broiler chickens in northeast Iran.Tropical animal health and production · 2015Article
- Sequence and phylogenetic analysis of surface protein genes of emerging H9N2 influenza viruses isolated from poultry in two geographical regions of China.Virus genes · 2014Article
- Molecular detection of infectious bronchitis and Newcastle disease viruses in broiler chickens with respiratory signs using Duplex RT-PCR.Veterinary research forum : an international quarterly journal · 2014Article
- Influenza research in the Eastern Mediterranean Region: the current state and the way forward.Influenza and other respiratory viruses · 2013Review
- Full-length characterization and phylogenetic analysis of hemagglutinin gene of H9N2 virus isolated from broilers in Iran during 1998-2007.Comparative clinical pathology · 2013Article
- Genetic analysis of polymerase complex (PA, PB1 and PB2) genes of H9N2 avian influenza viruses from Iran (1999 to 2009).Asian Pacific journal of tropical biomedicine · 2012Article
- Sequence and phylogenetic analysis of neuraminidase genes of H9N2 avian influenza viruses isolated from commercial broiler chicken in Iran (2008 and 2009).Tropical animal health and production · 2012Article
- Genetic evolution of low pathogenecity H9N2 avian influenza viruses in Tunisia: acquisition of new mutations.Virology journal · 2011Article
- Phylogeography and evolutionary history of reassortant H9N2 viruses with potential human health implications.Journal of virology · 2011Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
To determine the genetic relationship of Iranian viruses, the haemagglutinin (HA) genes from ten isolates of H9N2 viruses isolated from commercial chickens in Iran during 1998-2002 were amplified and sequenced. Sequence analysis and phylogenetic studies were conducted by comparing each isolate with those of the available H9N2 strains at GenBank. All these ten isolates had the same sequence -R-S-S-R/G-L- of proteolytic cleavage site of the HA. Nucleotide sequence comparisons of HA gene from Iranian isolates showed 95.2-99.1% identity within the group. Five isolates had leucine (L) at position 226 instead of glutamine (Q). Phylogenetic analysis showed that all our isolates belonged to the G1-like sublineage. Also these isolates showed some degree of homology with other H9N2 isolates e.g., 94.3-96.9% with qu/HK/G1/97, 96.1-98.6% with pa/Chiba/1/97, 95.6-98.2% with pa/Narita/92A/98, and 94.0-96.3% with HK/1073/99. On the basis of phylogenetic and molecular characterization evidence, we concluded that the H9N2 subtype influenza viruses circulating in chicken flocks in Iran since 1998-2002 had a common origin. The results of this study indicated that all Iranian viruses have the potential to emerge as highly pathogenic influenza virus, and considering the homology of these isolates with human H9N2 strains, it seems that the potential of these avian influenza isolates to infect human should not be overlooked.
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