biblioteca virtual en salud

Búsqueda | Gripe por A(H1N1)

  • BIREME | OPAS | OMS logo

Historico de búsqueda  ()

Su selección  ()

 0 documento(s) seleccionado(s).

Refine su búsqueda

Collapse All  Ocultar
Expand All  Mostrar
Áreas temáticas
Texto completo (418)

Enviar por email

Ud. tiene 0 documento(s) seleccionado(s).

Ningún documento seleccionado

Resultados  1-12 de 629

A High Throughput Assay for Screening Host Restriction Factors and Antivirals Targeting Influenza A Virus.

Autor(es): Wang L; Li W; Li S
Fuente: Front Microbiol;7: 858, 2016.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 27375580
Resumen: Influenza A virus (IAV) is a human respiratory pathogen that causes seasonal epidemics and occasional global pandemics with devastating levels of morbidity and mortality. Currently approved treatments against influenza are losing effectiveness, as new viral strains are often refractory to conventional treatments. Thus, there is an urgent need to find new therapeutic targets with which to develop novel antiviral drugs. The common strategy to discover new drug targets and antivirals is high t (mas)

Preserved antiviral adaptive immunity following polyclonal antibody immunotherapy for severe murine influenza infection.

Autor(es): Stevens NE; Hatjopolous A; Fraser CK; Alsharifi M; Diener KR; Hayball JD
Fuente: Sci Rep;6: 29154, 2016.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 27380890
Resumen: Passive immunotherapy may have particular benefits for the treatment of severe influenza infection in at-risk populations, however little is known of the impact of passive immunotherapy on the formation of memory responses to the virus. Ideally, passive immunotherapy should attenuate the severity of infection while still allowing the formation of adaptive responses to confer protection from future exposure. In this study, we sought to determine if administration of influenza-specific ovine (mas)

Antiviral activity of hydroalcoholic extract from Eupatorium perfoliatum L. against the attachment of influenza A virus.

Autor(es): Derksen A; Kühn J; Hafezi W; Sendker J; Ehrhardt C; Ludwig S; Hensel A
Fuente: J Ethnopharmacol;188: 144-52, 2016 Jul 21.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 27178637
Resumen: ETHNOPHARMACOLOGICAL RELEVANCE: Aerial parts of Eupatorium perfoliatum have been traditionally used by American natives as a treatment for fever and infections. Also modern phytotherapy in Europe documents the use of hydroalcoholic extracts of this herbal material for the treatment of infections of the upper respiratory tract. AIM OF THE STUDY: The aim of the present study was to characterize the anti-influenza A virus (IAV) potential of extracts derived from the aerial parts of E. perfolia (mas)

1,6-Bis[(benzyloxy)methyl]uracil derivatives-Novel antivirals with activity against HIV-1 and influenza H1N1 virus.

Autor(es): Geisman AN; Valuev-Elliston VT; Ozerov AA; Khandazhinskaya AL; Chizhov AO; Kochetkov SN; Pannecouque C; Naesens L; Seley-Radtke KL; Novikov MS
Fuente: Bioorg Med Chem;24(11): 2476-85, 2016 Jun 1.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 27112451
Resumen: A series of 1,6-bis[(benzyloxy)methyl]uracil derivatives combining structural features of both diphenyl ether and pyridone types of NNRTIs were synthesized. Target compounds were found to inhibit HIV-1 reverse transcriptase at micro- and submicromolar levels of concentrations and exhibited anti-HIV-1 activity in MT-4 cell culture, demonstrating resistance profile similar to first generation NNRTIs. The synthesized compounds also showed profound activity against influenza virus (H1N1) in MDC (mas)

In vitro and in vivo mechanism of immunomodulatory and antiviral activity of Edible Bird's Nest (EBN) against influenza A virus (IAV) infection.

Autor(es): Haghani A; Mehrbod P; Safi N; Aminuddin NA; Bahadoran A; Omar AR; Ideris A
Fuente: J Ethnopharmacol;185: 327-40, 2016 Jun 5.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26976767
Resumen: ETHNOPHARMACOLOGICAL RELEVANCE: For centuries, Edible Bird Nest (EBN) has been used in treatment of variety of respiratory diseases such as flu and cough as a Chinese natural medicine. AIM OF THE STUDY: This natural remedy showed the potential to inhibit influenza A virus (IAV). However, little is known about the mechanism of this process and also the evaluation of this product in an animal model. Hence, the current study was designed to elucidate the antiviral and immunomodulatory effects (mas)

Neuraminidase Activity and Resistance of 2009 Pandemic H1N1 Influenza Virus to Antiviral Activity in Bronchoalveolar Fluid.

Autor(es): Ruangrung K; Suptawiwat O; Maneechotesuwan K; Boonarkart C; Chakritbudsabong W; Assawabhumi J; Bhattarakosol P; Uiprasertkul M; Puthavathana P; Wiriyarat W; Jongkaewwattana A; Auewarakul P
Fuente: J Virol;90(9): 4637-46, 2016 May 1.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26912622
Resumen: UNLABELLED: Human bronchoalveolar fluid is known to have anti-influenza activity. It is believed to be a frontline innate defense against the virus. Several antiviral factors, including surfactant protein D, are believed to contribute to the activity. The 2009 pandemic H1N1 influenza virus was previously shown to be less sensitive to surfactant protein D. Nevertheless, whether different influenza virus strains have different sensitivities to the overall anti-influenza activity of human bron (mas)

Mx1 reveals innate pathways to antiviral resistance and lethal influenza disease.

Autor(es): Pillai PS; Molony RD; Martinod K; Dong H; Pang IK; Tal MC; Solis AG; Bielecki P; Mohanty S; Trentalange M; Homer RJ; Flavell RA; Wagner DD; Montgomery RR; Shaw AC; Staeheli P; Iwasaki A
Fuente: Science;352(6284): 463-6, 2016 Apr 22.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 27102485
Resumen: Influenza A virus (IAV) causes up to half a million deaths worldwide annually, 90% of which occur in older adults. We show that IAV-infected monocytes from older humans have impaired antiviral interferon production but retain intact inflammasome responses. To understand the in vivo consequence, we used mice expressing a functional Mx gene encoding a major interferon-induced effector against IAV in humans. In Mx1-intact mice with weakened resistance due to deficiencies in Mavs and Tlr7, we f (mas)

Outcomes and Prognostic Features of Patients With Influenza Requiring Hospitalization and Receiving Early Antiviral Therapy: A Prospective Multicenter Cohort Study.

Autor(es): Maruyama T; Fujisawa T; Suga S; Nakamura H; Nagao M; Taniguchi K; Tsutsui K; Ihara T; Niederman MS
Fuente: Chest;149(2): 526-34, 2016 Feb.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26203671
Resumen: BACKGROUND: In Japan, the routine use of early antiviral therapy for patients with influenza is standard. METHODS: This multicenter prospective cohort evaluation of hospitalized patients with laboratory-confirmed influenza identified prognostic factors among the patients receiving antiviral therapy. RESULTS: Of 1,345 patients with influenza (766 pediatric, 579 adult), excluding those aged < 1 year (who are not approved for antiviral therapy), 97.7% (1,224 of 1,253) received antiviral therap (mas)

Influenza virus surveillance in Argentina during the 2012 season: antigenic characterization, genetic analysis and antiviral susceptibility.

Autor(es): Benedetti E; Daniels RS; Pontoriero A; Russo M; Avaro M; Czech A; Campos A; Periolo N; Gregory V; McCauley JW; Baumeister EG
Fuente: Epidemiol Infect;144(4): 751-67, 2016 Mar.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26345289
Resumen: The activity and circulation of influenza viruses in Argentina was studied during 2012 as part of the Argentinean Surveillance for Influenza and other Respiratory Viruses, in the context of Global Influenza Surveillance. The antigenicity and molecular characteristics of haemagglutinins (HA) of circulating influenza A and B viruses were analysed to assess the emergence of virus variants. Susceptibility to oseltamivir and zanamivir was evaluated by enzymatic assay and results were backed-up b (mas)

Antiviral activity of SA-2 against influenza A virus in vitro/vivo and its inhibition of RNA polymerase.

Autor(es): Yu J; Wang D; Jin J; Xu J; Li M; Wang H; Dou J; Zhou C
Fuente: Antiviral Res;127: 68-78, 2016 Mar.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26802558
Resumen: A target-free and cell-based approach was applied to evaluate the anti-influenza properties of six newly synthesized benzoic acid derivatives. SA-2, the ethyl 4-(2-hydroxymethyl-5-oxopyrrolidin-1-yl)-3-[3-(3-methylbenzoyl)-thioureido] benzoate (compound 2) was screened as a potential drug candidate. In a cytopathic effect assay, SA-2 dose dependently inhibited H1N1, H3N2 and the oseltamivir-resistant mutant H1N1-H275Y influenza viruses in both virus-infected MDCK and A549 cells, with 50% ef (mas)

Recommendations pertaining to the use of influenza vaccines and influenza antiviral drugs, 2016.

Autor(es): Walaza S; Cohen C
Fuente: S Afr Med J;106(3): 251-3, 2016 Mar.
MEDLINE - Literatura Internacional en Ciencias de la Salud PMID: 26915935
Resumen: Vaccination is the most effective strategy to prevent influenza. It is recommended that influenza vaccine be administered each year before the influenza season, i.e. from March to June, although for individuals at increased risk of severe influenza in whom vaccination was missed, vaccine may be administered later. For a review of the 2015 influenza season and ongoing real-time updates of the 2016 influenza season when it starts, refer to the website of the National Institute for Communicabl (mas)

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)
Resultados  1-12 de 629