keyword
MENU ▼
Read by QxMD icon Read
search

Swine Influenza

keyword
https://www.readbyqxmd.com/read/29783968/investigating-porcine-parvoviruses-genogroup-2-infection-using-in-situ-polymerase-chain-reaction
#1
Dinko Novosel, Daniel Cadar, Tamás Tuboly, Andreja Jungic, Tomasz Stadejek, Tahar Ait-Ali, Attila Cságola
BACKGROUND: Porcine parvovirus 2 (PPV2) was detected in swine serum without showing any relationship with disease. The emergence of the virus seemed to be a unique event until other genetically highly similar parvoviruses were identified in China and, later in 2012, the presence of the virus was also described in Europe. PPV2 is widely distributed in pig populations where it is suspected to be involved in respiratory conditions, based on its frequent detection in lung samples. In order to investigate the potential pathogenic involvement of PPV2, 60 dead pigs were examined from two farms...
May 21, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29774857/influenza-d-virus-infection-in-feral-swine-populations-united-states
#2
Lucas Ferguson, Kaijian Luo, Alicia K Olivier, Fred L Cunningham, Sherry Blackmon, Katie Hanson-Dorr, Hailiang Sun, John Baroch, Mark W Lutman, Bianca Quade, William Epperson, Richard Webby, Thomas J DeLiberto, Xiu-Feng Wan
Influenza D virus (IDV) has been identified in domestic cattle, swine, camelid, and small ruminant populations across North America, Europe, Asia, South America, and Africa. Our study investigated seroprevalence and transmissibility of IDV in feral swine. During 2012-2013, we evaluated feral swine populations in 4 US states; of 256 swine tested, 57 (19.1%) were IDV seropositive. Among 96 archived influenza A virus-seropositive feral swine samples collected from 16 US states during 2010-2013, 41 (42.7%) were IDV seropositive...
June 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29772011/induction-of-influenza-specific-local-cd8-t-cells-in-the-respiratory-tract-after-aerosol-delivery-of-vaccine-antigen-or-virus-in-the-babraham-inbred-pig
#3
Katie Tungatt, Garry Dolton, Sophie B Morgan, Meriem Attaf, Anna Fuller, Thomas Whalley, Johanneke D Hemmink, Emily Porter, Barbara Szomolay, Maria Montoya, John A Hammond, John J Miles, David K Cole, Alain Townsend, Mick Bailey, Pierre J Rizkallah, Bryan Charleston, Elma Tchilian, Andrew K Sewell
There is increasing evidence that induction of local immune responses is a key component of effective vaccines. For respiratory pathogens, for example tuberculosis and influenza, aerosol delivery is being actively explored as a method to administer vaccine antigens. Current animal models used to study respiratory pathogens suffer from anatomical disparity with humans. The pig is a natural and important host of influenza viruses and is physiologically more comparable to humans than other animal models in terms of size, respiratory tract biology and volume...
May 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29770135/mucosal-immunity-and-protective-efficacy-of-intranasal-inactivated-influenza-vaccine-is-improved-by-chitosan-nanoparticle-delivery-in-pigs
#4
Santosh Dhakal, Sankar Renu, Shristi Ghimire, Yashavanth Shaan Lakshmanappa, Bradley T Hogshead, Ninoshkaly Feliciano-Ruiz, Fangjia Lu, Harm HogenEsch, Steven Krakowka, Chang Won Lee, Gourapura J Renukaradhya
Annually, swine influenza A virus (SwIAV) causes severe economic loss to swine industry. Currently used inactivated SwIAV vaccines administered by intramuscular injection provide homologous protection, but limited heterologous protection against constantly evolving field viruses, attributable to the induction of inadequate levels of mucosal IgA and cellular immune responses in the respiratory tract. A novel vaccine delivery platform using mucoadhesive chitosan nanoparticles (CNPs) administered through intranasal (IN) route has the potential to elicit strong mucosal and systemic immune responses in pigs...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29765037/novel-triple-reassortant-influenza-viruses-in-pigs-guangxi-china
#5
Ping He, Guojun Wang, Yanning Mo, Qingxiong Yu, Xiong Xiao, Wenjuan Yang, Weifeng Zhao, Xuan Guo, Qiong Chen, Jianqiao He, Mingli Liang, Jian Zhu, Yangbao Ding, Zuzhang Wei, Kang Ouyang, Fang Liu, Hui Jian, Weijian Huang, Adolfo García-Sastre, Ying Chen
Considered a "mixing vessel" for influenza viruses, pigs can give rise to new influenza virus reassortants that can threaten humans. During our surveillance of pigs in Guangxi, China from 2013 to 2015, we isolated 11 H1N1 and three H3N2 influenza A viruses of swine origin (IAVs-S). Out of the 14, we detected ten novel triple-reassortant viruses, which contained surface genes (hemagglutinin and neuraminidase) from Eurasian avian-like (EA) H1N1 or seasonal human-like H3N2, matrix (M) genes from H1N1/2009 pandemic or EA H1N1, nonstructural (NS) genes from classical swine, and the remaining genes from H1N1/2009 pandemic...
May 16, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29765021/prospective-surveillance-for-influenza-virus-in-chinese-swine-farms
#6
Benjamin D Anderson, Mai-Juan Ma, Guo-Lin Wang, Zhen-Qiang Bi, Bing Lu, Xian-Jun Wang, Chuang-Xin Wang, Shan-Hui Chen, Yan-Hua Qian, Shao-Xia Song, Min Li, Teng Zhao, Meng-Na Wu, Laura K Borkenhagen, Wu-Chun Cao, Gregory C Gray
Pork production in China is rapidly increasing and swine production operations are expanding in size and number. However, the biosecurity measures necessary to prevent swine disease transmission, particularly influenza. viruses (IAV) that can be zoonotic, are often inadequate. Despite this risk, few studies have attempted to comprehensively study IAV ecology in swine production settings. Here, we present environmental and animal sampling data collected in the first year of an ongoing five-year prospective epidemiological study to assess IAV ecology as it relates to swine workers, their pigs, and the farm environment...
May 16, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29749408/virulent-pb1-f2-residues-effects-on-fitness-of-h1n1-influenza-a-virus-in-mice-and-changes-during-evolution-of-human-influenza-a-viruses
#7
Irina V Alymova, Jonathan A McCullers, Ram P Kamal, Peter Vogel, Amanda M Green, Shane Gansebom, Ian A York
Specific residues of influenza A virus (IAV) PB1-F2 proteins may enhance inflammation or cytotoxicity. In a series of studies, we evaluated the function of these virulence-associated residues in the context of different IAV subtypes in mice. Here, we demonstrate that, as with the previously assessed pandemic 1968 (H3N2) IAV, PB1-F2 inflammatory residues increase the virulence of H1N1 IAV, suggesting that this effect might be a universal feature. Combining both inflammatory and cytotoxic residues in PB1-F2 enhanced virulence further, compared to either motif alone...
May 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29732720/distribution-of-gene-segments-of-the-pandemic-a-h1n1-2009-virus-lineage-in-pig-populations
#8
K Okuya, A Matsuu, T Kawabata, F Koike, M Ito, T Furuya, A Taneno, S Akimoto, E Deguchi, M Ozawa
Swine influenza viruses (SIVs) are important not only for pig farming, but also for public health. In fact, pandemic A(H1N1) 2009 viruses [A(H1N1)pdm09] were derived from SIVs. Therefore, timely characterization of locally circulating SIVs is necessary for understanding the global status of SIVs. To genetically characterize SIVs circulating in Japanese pig populations, we isolated 24 SIVs of three subtypes (17 H1N1, four H1N2 and three H3N2 strains) from 14 pig farms in Japan from 2013 to 2016. Genetic analyses revealed that the haemagglutinin (HA) and neuraminidase (NA) genes of the 17 H1N1 and the HA gene of one H1N2, A/swine/Aichi/02/2016 (H1N2), SIVs belonged to the A(H1N1)pdm09 lineage...
May 6, 2018: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29717109/substitution-of-d701n-in-the-pb2-protein-could-enhance-the-viral-replication-and-pathogenicity-of-eurasian-avian-like-h1n1-swine-influenza-viruses
#9
Suli Liu, Wenfei Zhu, Zhaomin Feng, Rongbao Gao, Junfeng Guo, Xiyan Li, Jia Liu, Dayan Wang, Yuelong Shu
Eurasian avian-like H1N1 (EA H1N1) swine influenza viruses (SIVs) have become predominant in pig populations in China and have recently been reported to have the most potential to raise the next pandemic in humans. The mutation D701N in the PB2 protein, which accounts for 31% of H1N1 SIVs, has previously been shown to contribute to the adaptation of the highly pathogenic H5N1 or H7N7 avian influenza viruses in mammals. However, little is known of the effects of this substitution on the EA H1N1 viruses. Herein, we investigated the contributions of 701N in the PB2 protein to an EA H1N1 SIV (A/Hunan/42443/2015(H1N1), HuN EA-H1N1), which had 701D in the PB2 protein...
May 2, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29677213/ifn-%C3%AE-and-micrornas-are-important-modulators-of-the-pulmonary-innate-immune-response-against-influenza-a-h1n2-infection-in-pigs
#10
Louise Brogaard, Lars E Larsen, Peter M H Heegaard, Christian Anthon, Jan Gorodkin, Ralf Dürrwald, Kerstin Skovgaard
The innate immune system is paramount in the response to and clearance of influenza A virus (IAV) infection in non-immune individuals. Known factors include type I and III interferons and antiviral pathogen recognition receptors, and the cascades of antiviral and pro- and anti-inflammatory gene expression they induce. MicroRNAs (miRNAs) are increasingly recognized to participate in post-transcriptional modulation of these responses, but the temporal dynamics of how these players of the antiviral innate immune response collaborate to combat infection remain poorly characterized...
2018: PloS One
https://www.readbyqxmd.com/read/29665972/intranasal-delivery-of-influenza-antigen-by-nanoparticles-but-not-nkt-cell-adjuvant-differentially-induces-the-expression-of-b-cell-activation-factors-in-mice-and-swine
#11
Sankar Renu, Santosh Dhakal, Eunsoo Kim, Jonathan Goodman, Yashavanth S Lakshmanappa, Michael J Wannemuehler, Balaji Narasimhan, Prosper N Boyaka, Gourapura J Renukaradhya
Intranasal vaccination of pigs with poly lactic-co-glycolic acid and polyanhydride nanoparticles delivered inactivated influenza virus provides cross-reactive T-cell response, but not antibody response, resulting in incomplete protection and no reduction in nasal virus shedding. Expression of BAFF and Th2 transcription factor GATA-3 were downregulated in lungs of pigs vaccinated with influenza nanovaccine, but in mice it upregulated the expression of BAFF and cytokine TGFβ in cervical lymph nodes. However, the intranasal iNKT cell adjuvant, α-Galctosylceramide upregulates the expression of BAFF in pig lungs...
April 11, 2018: Cellular Immunology
https://www.readbyqxmd.com/read/29651056/evidence-of-exposure-of-domestic-pigs-to-highly-pathogenic-avian-influenza-h5n1-in-nigeria
#12
Clement Meseko, Anja Globig, Jeremiah Ijomanta, Tony Joannis, Chika Nwosuh, David Shamaki, Timm Harder, Donata Hoffman, Anne Pohlmann, Martin Beer, Thomas Mettenleiter, Elke Starick
Avian influenza viruses (AIV) potentially transmit to swine as shown by experiments, where further reassortment may contribute to the generation of pandemic strains. Associated risks of AIV inter-species transmission are greater in countries like Nigeria with recurrent epidemics of highly pathogenic AI (HPAI) in poultry and significant pig population. Analysis of 129 tracheal swab specimens collected from apparently healthy pigs at slaughterhouse during presence of HPAI virus H5N1 in poultry in Nigeria for influenza A by RT-qPCR yielded 43 positive samples...
April 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29642453/glycosylation-of-hemagglutinin-and-neuraminidase-of-influenza-a-virus-as-signature-for-ecological-spillover-and-adaptation-among-influenza-reservoirs
#13
Paul Kim, Yo Han Jang, Soon Bin Kwon, Chung Min Lee, Gyoonhee Han, Baik Lin Seong
Glycosylation of the hemagglutinin (HA) and neuraminidase (NA) of the influenza provides crucial means for immune evasion and viral fitness in a host population. However, the time-dependent dynamics of each glycosylation sites have not been addressed. We monitored the potential N-linked glycosylation (NLG) sites of over 10,000 HA and NA of H1N1 subtype isolated from human, avian, and swine species over the past century. The results show a shift in glycosylation sites as a hallmark of 1918 and 2009 pandemics, and also for the 1976 "abortive pandemic"...
April 7, 2018: Viruses
https://www.readbyqxmd.com/read/29625417/the-role-of-conserved-qxg-and-binding-affinity-of-s23g-s26g-receptors-on-avian-h5-swine-h1-and-human-h1-of-influenza-a-virus-hemagglutinin
#14
Panita Kongsune, Supot Hannongbua
Outbreaks of avian, human and swine influenza are a serious concern for public health. In the reproductive cycle of the influenza virus, hemagglutinin (HA) is the primary protein responsible for binding to glycan receptor sites on the host cell surface. MD simulations of avian H5, swine H1 and human H1 complexed with S23G and S26G receptors were performed to study the role of key residues on the receptor conformational behaviors, hydrogen bond formation, binding free energy and residue-wise energy contribution...
March 29, 2018: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/29624873/regional-patterns-of-genetic-diversity-in-swine-influenza-a-viruses-in-the-united-states-from-2010-to-2016
#15
Rasna R Walia, Tavis K Anderson, Amy L Vincent
BACKGROUND: Regular spatial and temporal analyses of the genetic diversity and evolutionary patterns of influenza A virus (IAV) in swine informs control efforts and improves animal health. Initiated in 2009, the USDA passively surveils IAV in U.S. swine, with a focus on subtyping clinical respiratory submissions, sequencing at minimum the hemagglutinin (HA) and neuraminidase (NA) genes, and sharing these data publicly. OBJECTIVES: In this study, our goal was to quantify and describe regional and national patterns in the genetic diversity and evolution of IAV in U...
April 6, 2018: Influenza and Other Respiratory Viruses
https://www.readbyqxmd.com/read/29623073/ns-segment-of-a-1918-influenza-a-virus-descendent-enhances-replication-of-h1n1pdm09-and-virus-induced-cellular-immune-response-in-mammalian-and-avian-systems
#16
Henning Petersen, Ahmed Mostafa, Mohamed A Tantawy, Azeem A Iqbal, Donata Hoffmann, Aravind Tallam, Balachandar Selvakumar, Frank Pessler, Martin Beer, Silke Rautenschlein, Stephan Pleschka
The 2009 pandemic influenza A virus (IAV) H1N1 strain (H1N1pdm09) has widely spread and is circulating in humans and swine together with other human and avian IAVs. This fact raises the concern that reassortment between H1N1pdm09 and co-circulating viruses might lead to an increase of H1N1pdm09 pathogenicity in different susceptible host species. Herein, we explored the potential of different NS segments to enhance the replication dynamics, pathogenicity and host range of H1N1pdm09 strain A/Giessen/06/09 (Gi-wt)...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29602269/risk-for-interspecies-transmission-of-zoonotic-pathogens-during-poultry-processing-and-pork-production-in-peru-a-qualitative-study
#17
A M Carnero, K Kitayama, D A Diaz, M Garvich, N Angulo, V A Cama, R H Gilman, A M Bayer
Interspecies transmission of pathogens is an unfrequent but naturally occurring event and human activities may favour opportunities not previously reported. Reassortment of zoonotic pathogens like influenza A virus can result from these activities. Recently, swine and birds have played a central role as "mixing vessels" for epidemic and pandemic events related to strains like H1N1 and H5N1. Unsafe practices in poultry markets and swine farms can lead to interspecies transmission, favouring the emergence of novel strains...
March 30, 2018: Zoonoses and Public Health
https://www.readbyqxmd.com/read/29599422/fatal-acute-respiratory-distress-syndrome-due-to-influenza-a-h1n1-infection-in-patients-after-kidney-transplantation-a-report-of-five-cases
#18
Paweł Zatorski, Agata Adamczyk, Maciej Kosieradzki, Teresa Baczkowska, Dariusz Kosson, Janusz Trzebicki
BACKGROUND In the general population, swine influenza is a self-limited infection. Patients after kidney transplantation, however, are at increased risk for complications and mortality from influenza A (H1N1). Acute respiratory distress syndrome (ARDS) complicates up to 55% of influenza-related pneumonia in hospitalized patients and carries a mortality of 40-46%. We describe our experience in intensive care of kidney transplant patients with ARDS complicating influenza A (H1N1) pneumonia during a flu outbreak...
March 30, 2018: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/29587842/experimental-infection-of-pigs-with-h1-and-h3-influenza-a-viruses-of-swine-by-using-intranasal-nebulization
#19
Nobuhiro Takemae, Ryota Tsunekuni, Yuko Uchida, Toshihiro Ito, Takehiko Saito
BACKGROUND: Experimental infection of pigs via direct intranasal or intratracheal inoculation has been mainly used to study the infectious process of influenza A viruses of swine (IAVs-S). Nebulization is known to be an alternative method for inoculating pigs with IAVs-S, because larger quantities of virus potentially can be delivered throughout the respiratory tract. However, there is very little data on the experimental infection of pigs by inhalation using nebulizer. In the current study, we used intranasal nebulization to inoculate pigs with 9 different IAVs-S-3 H1N1, 2 H1N2, and 4 H3N2 strains...
March 27, 2018: BMC Veterinary Research
https://www.readbyqxmd.com/read/29587786/effects-of-the-s42-residue-of-the-h1n1-swine-influenza-virus-ns1-protein-on-interferon-responses-and-virus-replication
#20
Jinghua Cheng, Chunling Zhang, Jie Tao, Benqiang Li, Ying Shi, Huili Liu
BACKGROUND: The influenza A virus non-structural protein 1 (NS1) is a multifunctional protein that plays an important role in virus replication, virulence and inhibition of the host antiviral immune response. In the avian influenza virus or human influenza virus, specific amino acids of NS1 have been shown to be important for the virus to antagonize host antiviral defenses and promote viral replication. However, little research has been reported regarding the swine influenza virus (SIV) NS1 protein...
March 27, 2018: Virology Journal
keyword
keyword
98191
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"