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Resultados  1-12 de 601

Discovery of Influenza A Virus Sequence Pairs and Their Combinations for Simultaneous Heterosubtypic Targeting that Hedge against Antiviral Resistance.

Autor(es): Wee KB; Lee RT; Lin J; Pramono ZA; Maurer-Stroh S
Fuente: PLoS Comput Biol;12(1): e1004663, 2016 Jan.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26771381
Resumen: The multiple circulating human influenza A virus subtypes coupled with the perpetual genomic mutations and segment reassortment events challenge the development of effective therapeutics. The capacity to drug most RNAs motivates the investigation on viral RNA targets. 123,060 segment sequences from 35,938 strains of the most prevalent subtypes also infecting humans-H1N1, 2009 pandemic H1N1, H3N2, H5N1 and H7N9, were used to identify 1,183 conserved RNA target sequences (≥15-mer) in th (mas)

Accelerating Influenza Research: Vaccines, Antivirals, Immunomodulators and Monoclonal Antibodies. The Manufacture of a New Wild-Type H3N2 Virus for the Human Viral Challenge Model.

Autor(es): Fullen DJ; Noulin N; Catchpole A; Fathi H; Murray EJ; Mann A; Eze K; Balaratnam G; Borley DW; Gilbert A; Lambkin-Williams R
Fuente: PLoS One;11(1): e0145902, 2016.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26761707
Resumen: BACKGROUND: Influenza and its associated diseases are a major cause of morbidity and mortality. The United States Advisory Committee on Immunization Practices recommends influenza vaccination for everyone over 6 months of age. The failure of the flu vaccine in 2014-2015 demonstrates the need for a model that allows the rapid development of novel antivirals, universal/intra-seasonal vaccines, immunomodulators, monoclonal antibodies and other novel treatments. To this end we manufactured a ne (mas)

Quercetin as an Antiviral Agent Inhibits Influenza A Virus (IAV) Entry.

Autor(es): Wu W; Li R; Li X; He J; Jiang S; Liu S; Yang J
Fuente: Viruses;8(1)2015.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26712783
Resumen: Influenza A viruses (IAVs) cause seasonal pandemics and epidemics with high morbidity and mortality, which calls for effective anti-IAV agents. The glycoprotein hemagglutinin of influenza virus plays a crucial role in the initial stage of virus infection, making it a potential target for anti-influenza therapeutics development. Here we found that quercetin inhibited influenza infection with a wide spectrum of strains, including A/Puerto Rico/8/34 (H1N1), A/FM-1/47/1 (H1N1), and A/Aichi/2/68 (mas)

[Antiviral effects of the combination of glycyrrhizin and ribavirin against influenza A H1N1 virus infection in vivo].

Autor(es): Chen XX; Zhou HX; Qi WB; Ning ZY; Ma YJ; Li YL; Wang GC; Chen JX
Fuente: Yao Xue Xue Bao;50(8): 966-72, 2015 Aug.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26668995
Resumen: Ribavirin is a broad-spectrum antiviral agent and glycyrrhizin has activities of anti-inflammation, immunoregulation and anti-viral infections. To enhance antiviral efficacy and weaken side-effects of ribavirin, antiviral effects of the combination of glycyrrhizin and ribavirin were studied in the present study. Firstly, a mouse model of viral pneumonia was established by inoculation of influenza H1N1 virus. Protective effects of glycyrrhizin and ribavirin used alone or in combination again (mas)

Oligomerization and GTP-binding Requirements of MxA for Viral Target Recognition and Antiviral Activity against Influenza A Virus.

Autor(es): Nigg PE; Pavlovic J
Fuente: J Biol Chem;290(50): 29893-906, 2015 Dec 11.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26507657
Resumen: The IFN-induced human myxovirus resistance protein A (MxA) exhibits a broad antiviral activity against many viruses, including influenza A virus (IAV). MxA belongs to the family of dynamin-like GTPases and assembles in vitro into dimers, tetramers, and oligomeric ring-like structures. The molecular mechanism of action remains to be elucidated. Furthermore, it is not clear whether MxA exerts its antiviral activity in a monomeric and/or multimeric form. Using a set of MxA mutants that form co (mas)

A Newly Emerged Swine-Origin Influenza A(H3N2) Variant Dampens Host Antiviral Immunity but Induces Potent Inflammasome Activation.

Autor(es): Cao W; Mishina M; Ranjan P; De La Cruz JA; Kim JH; Garten R; Kumar A; García-Sastre A; Katz JM; Gangappa S; Sambhara S
Fuente: J Infect Dis;212(12): 1923-9, 2015 Dec 15.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26068782
Resumen: We compared the innate immune response to a newly emerged swine-origin influenza A(H3N2) variant containing the M gene from 2009 pandemic influenza A(H1N1), termed "A(H3N2)vpM," to the immune responses to the 2010 swine-origin influenza A(H3N2) variant and seasonal influenza A(H3N2). Our results demonstrated that A(H3N2)vpM-induced myeloid dendritic cells secreted significantly lower levels of type I interferon (IFN) but produced significantly higher levels of proinflammatory cytokines and (mas)

Zanamivir-resistant influenza viruses with Q136K or Q136R neuraminidase residue mutations can arise during MDCK cell culture creating challenges for antiviral susceptibility monitoring.

Autor(es): Little K; Leang SK; Butler J; Baas C; Harrower B; Mosse J; Barr IG; Hurt AC
Fuente: Euro Surveill;20(45)2015 Nov 12.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26608955
Resumen: Surveillance of circulating influenza strains for antiviral susceptibility is important to ensure patient treatment guidelines remain appropriate. Influenza A(H3N2) and A(H1N1)pdm09 virus isolates containing mutations at the Q136 residue of the neuraminidase (NA) that conferred reduced susceptibility to the NA inhibitor (NAI) zanamivir were detected during antiviral susceptibility monitoring. Interestingly, the mutations were not detectable in the viruses from respective clinical specimens, (mas)

Antiviral Activities of Several Oral Traditional Chinese Medicines against Influenza Viruses.

Autor(es): Ma LL; Ge M; Wang HQ; Yin JQ; Jiang JD; Li YH
Fuente: Evid Based Complement Alternat Med;2015: 367250, 2015.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26557857
Resumen: Influenza is still a serious threat to human health with significant morbidity and mortality. The emergence of drug-resistant influenza viruses poses a great challenge to existing antiviral drugs. Traditional Chinese medicines (TCMs) may be an alternative to overcome the challenge. Here, 10 oral proprietary Chinese medicines were selected to evaluate their anti-influenza activities. These drugs exhibit potent inhibitory effects against influenza A H1N1, influenza A H3N2, and influenza B vir (mas)

Intranasal administration of poly-gamma glutamate induced antiviral activity and protective immune responses against H1N1 influenza A virus infection.

Autor(es): Kim EH; Choi YK; Kim CJ; Sung MH; Poo H
Fuente: Virol J;12: 160, 2015.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26437715
Resumen: BACKGROUND: The global outbreak of a novel swine-origin strain of the 2009 H1N1 influenza A virus and the sudden, worldwide increase in oseltamivir-resistant H1N1 influenza A viruses highlight the urgent need for novel antiviral therapy. METHODS: Here, we investigated the antiviral efficacy of poly-gamma glutamate (γ-PGA), a safe and edible biomaterial that is naturally synthesized by Bacillus subtilis, against A/Puerto Rico/8/1934 (PR8) and A/California/04/2009 (CA04) H1N1 influenza A v (mas)

Antiviral therapy in seasonal influenza and 2009 H1N1 pandemic influenza: Korean experiences and perspectives.

Autor(es): Song JY; Noh JY; Choi WS; Cheong HJ; Kim WJ
Fuente: Expert Rev Anti Infect Ther;13(11): 1361-72, 2015.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26256778
Resumen: Influenza is a major cause of substantial morbidity and mortality in humans every year. Vaccination is the main strategy to prevent influenza infection, but antiviral agents also play an important role in the control of both seasonal and pandemic influenza. During the influenza A/H1N1 pandemic in 2009, early prompt antiviral therapy may have reduced the severity of the influenza outcomes including pneumonia, hospitalization and mortality in the Republic of Korea. Since the 2009 H1N1 pandemi (mas)

Commentary On Arriola et al. Antivirals and Effect Modification in Influenza Studies.

Autor(es): Chughtai AA; Rahman B; MacIntyre CR
Fuente: J Infect Dis;212(10): 1683-4, 2015 Nov 15.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26175453

Arginine-rich histones have strong antiviral activity for influenza A viruses.

Autor(es): Hoeksema M; Tripathi S; White M; Qi L; Taubenberger J; van Eijk M; Haagsman H; Hartshorn KL
Fuente: Innate Immun;21(7): 736-45, 2015 Oct.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26138524
Resumen: While histones are best known for DNA binding and transcription-regulating properties, they also have antimicrobial activity against a broad range of potentially pathogenic organisms. Histones are abundant in neutrophil extracellular traps, where they play an important role in NET-mediated antimicrobial killing. Here, we show anti-influenza activity of histones against both seasonal H3N2 and H1N1, but not pandemic H1N1. The arginine rich histones, H3 and H4, had greater neutralizing and vir (mas)
Resultados  1-12 de 601