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Amantadine resistance of clade 2.3.2 H5N1 Avian Influenza Virus from Waterfowl in Indonesia Dyah Ayu Hewajuli; NLP Indi Dharmayanti; I Wayan Teguh Wibawan
Jurnal Ilmu Ternak dan Veteriner Vol 26, No 3 (2021): September 2021
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14334/jitv.v26i3.2764

The objective of this research was to know the sensitivity of H5N1 clade 2.3.2 AIV from Indonesia to antiviral drug (amantadine) through molecular and in vitro tests. The study was conducted by virus isolation and identification, nucleotide analysis, and susceptibility to the amantadine hydrocloride in MDCK cells. The study result represented that the mean EID50 isolates of H5N1 clade 2.3.2 AIV was determined of >108 EID50/ml. The analysis of phylogenetic tree of M2 gene from six viruses of H5N1 clade 2.3.2 AIV from Indonesia were closed with H5N1 clade 2.3.2 AIV avian influenza viruses from Vietnam, China, Hongkong. The substitution of M2 protein (V27I) was identified in six isolates H5N1 clade 2.3.2 AIV isolated from Indonesia. Avian influenza of clade 2.3.2 H5N1 subtype from Indonesia produced the formation of CPE and the positive HA reaction with non-toxic concentration of amantadine hydrochloride in MDCK cells. The result of genetic analysis of M2 gene for amantadine resistance was related with the results of HA test and the formation of CPE in MDCK cells. These results established that amantadine resistance have been identified in H5N1 clade 2.3.2 AIV viruses isolated from Indonesia

Genetic Reassortment Among the Influenza Viruses (Avian Influenza, Human Influenza and Swine Influenza) in Pigs Dyah Ayu Hewajuli; Ni Luh Putu Indi Dharmayanti
WARTAZOA, Indonesian Bulletin of Animal and Veterinary Sciences Vol 22, No 4 (2012): DECEMBER 2012
Publisher : Indonesian Center for Animal Research and Development

Influenza A virus is a hazardous virus and harm to respiratory tract. The virus infect birds, pigs, horses, dogs, mammals and humans. Pigs are important hosts in ecology of the influenza virus because they have two receptors, namely NeuAc 2,3Gal and NeuAc 2,6Gal which make the pigs are sensitive to infection of influenza virus from birds and humans and genetic reassortment can be occurred. Classical swine influenza H1N1 viruses had been circulated in pigs in North America and other countries for 80 years. In 1998, triple reassortant H3N2 swine influenza viruses that contains genes of human influenza A virus (H3N2), swine influenza virus (H1N1) and avian influenza are reported as cause an outbreaks in pigs in North America. Furthermore, the circulation of triple reassortant H3N2 swine influenza virus resulting reassortant H1N1 swine influenza and reassortant H1N2 swine influenza viruses cause infection in humans. Humans who were infected by triple reassortant swine influenza A virus (H1N1) usually made direct contact with pigs. Although without any clinical symptoms, pigs that are infected by triple reassortant swine influenza A (H1N1) can transmit infection to the humans around them. In June 2009, WHO declared that pandemic influenza of reassortant H1N1 influenza A virus (novel H1N1) has reached phase 6. In Indonesia until 2009, there were 1005 people were infected by H1N1 influenza A and 5 of them died. Novel H1N1 and H5N1 viruses have been circulated in humans and pigs in Indonesia. H5N1 reassortant and H1N1 viruses or the seasonal flu may could arise because of genetic reassortment between avian influenza and humans influenza viruses that infect pigs together.Key words: influenza viruses, swine, genetic reassortment

The Advance of Technology of Reverse Transcriptase-Polymerase Chain Reaction in Identifying the Genome of Avian Influenza and Newcastle Diseases Dyah Ayu Hewajuli; NLPI Dharmayanti
WARTAZOA, Indonesian Bulletin of Animal and Veterinary Sciences Vol 24, No 1 (2014): MARCH 2014
Publisher : Indonesian Center for Animal Research and Development

Avian Influenza (AI) viruses are zoonotic and caused death in humans. Newcastle Diseases (ND) virus has an economical impact in poultry. Therefore, the identification and characterization of AI and ND viruses that are appropriate, accurate and quick are important to protect human and poultry health. Reverse Transcriptase-Polymerase Chain Reaction (RT-PCR) was the latest gold standard to detect the genome of AI and ND viruses. Recently, RT-PCR was developed in routine diagnosis and research. RT-PCR is a method to amplify the sequences of DNA genome, preceded by reverse transcriptase process with the primer-mediated enzymatic. Some factors that influenced detection of AI and ND are design primer and probe, types of samples, enzyme, reagent composition, amplification temperature and cycles, technical and non-technical factors such as contamination and trained staff. Modified conventional and real time RT-PCR are able to improve the specificity and sensitivity of the test. Key words: Detection, Avian Influenza, Newcastle Diseases, RT-PCR

Efficacy, Mechanism and Antiviral Resistance of Neuraminidase Inhibitors and Adamantane against Avian Influenza Dyah Ayu Hewajuli; NLPI Dharmayanti
WARTAZOA, Indonesian Bulletin of Animal and Veterinary Sciences Vol 29, No 2 (2019): June 2019
Publisher : Indonesian Center for Animal Research and Development

Vaccination and antiviral drug are often used to control influenza. However, the effectiveness of vaccine was impaired due to the emergence of new variant of virus strain. Antiviral drug consists of prophylactic and curative substances, namely M2 ion channel inhibitors (adamantane; amantadine and rimantadine) and neuraminidase (NA) inhibitors (NAIs; oseltamivir, zanamivir, peramivir, laninamivir). The synthesis and modification of antiviral neuraminidase (NA) inhibitors (NAIs) and adamantanes increased the antiviral effectiveness. The mechanism of the neuraminidase inhibitor is to prevent influenza infection by inhibiting the release of the virus from internal cells. Adamantane is antiviral drug that selectively inhibits the flow of H+ ions through M2 protein to prevent the uncoating virus particles getting into the endosome. The substitution of (H275Y, S247N, I223L, K150N, R292K, I222T, R152K, R118K, E119V) on NA protein caused resistance of avian influenza virus against the neuraminidase inhibitor. The combination of mutations (S247N, I223L, K150N) increased the resistance of influenza A (H5N1) virus. The diffusion of adamantane resistance varies among HA subtypes, the species of host, the period of isolation, and region. Mutations at residues of 26, 27, 30, 31 or 34 transmembrane M2 protein caused adamantane resistance. The unique substitution (V27I) of M2 protein of clade 2.3.2 H5N1 subtype isolated in Indonesia in 2016 has been contributed to the amantadine resistance. Antiviral combination of M2 ion channel inhibitors and neuraminidase (NA) inhibitors is effective treatments for the resistance.

The Relationship of Avian Influenza and Waterbirds in Creating Genetic Diversity and the Role of Waterbirds as Reservoir for Avian Influenza Dyah Ayu Hewajuli; Ni Luh Putu Indi Dharmayanti
WARTAZOA, Indonesian Bulletin of Animal and Veterinary Sciences Vol 22, No 1 (2012): MARCH 2012
Publisher : Indonesian Center for Animal Research and Development

Outbreaks of Avian Influenza (AI) has enormous implications for poultry and human health.These outbreaks are caused by influenza A virus that belongS to the family of Orthomyxoviridae. These viruses are RNA viruses, negative polarity, and the envelope has segmented genom. Generally, Avian Influenza is a disease which originally occurred in birds with complex ecology including reassortment and transmission among different species of birds and mammals. The gene of AI virus can be transmitted among human and avian species as shown by the virus reasortantment that caused pandemic human influenza in 1957 and 1968. Pandemi in 1957 and 1968 were different from previously human viruses because the substitution of several genes are derived from avian viruses. Wild waterfowls especially Anseriformes (duck, muscovy duck and geese) and Charadriiformes (gulls, seabirds, wild birds) are the natural reservoirs for influenza type A viruses and play important role on the ecology and propagation of the virus. From this reservoir, influenza type A virus usually can be transmitted to other birds, mammals (including human) and caused outbreak of lethal diseases. Waterfowl that is infected with influenza A virus usually does not show any clinical symptoms. However, several reports stated that HPAI viruses can cause severe disease with neurogical disorders led to death in waterfowl. Migration of birds including waterfowls have active role in transmitting and spreading the disease. Movement of wild birds and inappropriate poultry trade transportation play a greater role as vector in spreading HPAI to humans. Ecological change of environment has also a great effect in spreading AI viruses. The spreading pattern of AI viruses is usually influenced by seasons, where the prevalence of AI was reported to be in the fall, winter and rainy seasons. Finally, the effective control strategies against the spreading of AI viruses is required. Programs of monitoring, surveilence and vaccination is part of the control strategies of AI viruse spreading besides other strategies that had been applied. Key words: Avian Influenza, reservoir of AI, waterbirds, migration

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