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https://www.readbyqxmd.com/read/28435153/human-rhinovirus-induced-inflammatory-responses-are-inhibited-by-phosphatidylserine-containing-liposomes
#1
C A Stokes, R Kaur, M R Edwards, M Mondhe, D Robinson, E C Prestwich, R D Hume, C A Marshall, Y Perrie, V B O'Donnell, J L Harwood, I Sabroe, L C Parker
No abstract text is available yet for this article.
May 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28433687/steroid-resistance-of-airway-type-2-innate-lymphoid-cells-ilc2s-from-severe-asthma-the-role-of-thymic-stromal-cell-lymphopoietin-tslp
#2
Sucai Liu, Mukesh Verma, Lidia Michalec, Weimin Liu, Anand Sripada, Donald Rollins, James Good, Yoko Ito, HongWei Chu, Magdalena M Gorska, Richard J Martin, Rafeul Alam
BACKGROUND: ILC2s represent an important type 2 immune cell. Glucocorticoid regulation of human ILC2s is largely unknown. OBJECTIVE: To assess steroid resistance of human blood and airway ILC2s from asthmatic patients and examine its mechanism of induction. METHODS: We studied human blood and lung ILC2s from asthmatic and control subjects by flow cytometry and ELISA. RESULTS: Dexamethasone (Dex) inhibited (P=0.04) CRTH2 and type 2 cytokine expression by blood ILC2s stimulated with IL25 and IL33...
April 19, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28432209/a-prospective-observational-cohort-study-of-the-seasonal-dynamics-of-airway-pathogens-in-the-aetiology-of-exacerbations-in-copd
#3
Tom M A Wilkinson, Emmanuel Aris, Simon Bourne, Stuart C Clarke, Mathieu Peeters, Thierry G Pascal, Sonia Schoonbroodt, Andrew C Tuck, Viktoriya Kim, Kristoffer Ostridge, Karl J Staples, Nicholas Williams, Anthony Williams, Stephen Wootton, Jeanne-Marie Devaster
BACKGROUND: The aetiology of acute exacerbations of COPD (AECOPD) is incompletely understood. Understanding the relationship between chronic bacterial airway infection and viral exposure may explain the incidence and seasonality of these events. METHODS: In this prospective, observational cohort study (NCT01360398), patients with COPD aged 40-85 years underwent sputum sampling monthly and at exacerbation for detection of bacteria and viruses. Results are presented for subjects in the full cohort, followed for 1 year...
April 21, 2017: Thorax
https://www.readbyqxmd.com/read/28425979/factors-leading-to-rehospitalization-for-tracheostomized-and-ventilator-dependent-infants-through-2-years-of-age
#4
G Akangire, W Manimtim, M Nyp, N Townley, H Dai, M Norberg, J B Taylor
OBJECTIVE: To identify factors leading to readmission for tracheostomized, ventilator-dependent infants <2 years of age. STUDY DESIGN: Retrospective cohort study of 117 tracheostomized, ventilator-dependent infants followed through 2 years of age. RESULTS: Home ventilator use (at hospital discharge, 6 and 12 months of age), inhaled steroid use (at 12 and 24 months of age), oxygen dependence (at 6 and 12 months of age) and tracheostomy (at discharge, 6 and 12 months of age) were increased risks for rehospitalization...
April 20, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28424887/a-metagenomics-study-for-the-identification-of-respiratory-viruses-in-mixed-clinical-specimens-an-application-of-the-iterative-mapping-approach
#5
Yu-Nong Gong, Shu-Li Yang, Guang-Wu Chen, Yu-Wen Chen, Yhu-Chering Huang, Hsiao-Chen Ning, Kuo-Chien Tsao
Metagenomic approaches to detect viral genomes and variants in clinical samples have various challenges, including low viral titers and bacterial and human genome contamination. To address these limitations, we examined a next-generation sequencing (NGS) and iterative mapping approach for virus detection in clinical samples. We analyzed 40 clinical specimens from hospitalized children diagnosed with acute bronchiolitis, croup, or respiratory tract infections in which virus identification by viral culture or polymerase chain reaction (PCR) was unsuccessful...
April 19, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28418771/persistence-in-temporary-lung-niches-a-survival-strategy-of-lung-resident-memory-cd8-t-cells
#6
Shiki Takamura
Respiratory virus infections, such as those mediated by influenza virus, parainfluenza virus, respiratory syncytial virus (RSV), severe acute respiratory syndrome coronavirus (SARS-CoV), rhinovirus, and adenovirus, are responsible for substantial morbidity and mortality, especially in children and older adults. Furthermore, the potential emergence of highly pathogenic strains of influenza virus poses a significant public health threat. Thus, the development of vaccines capable of eliciting long-lasting protective immunity to those pathogens is a major public health priority...
April 18, 2017: Viral Immunology
https://www.readbyqxmd.com/read/28415826/azithromycin-augments-rhinovirus-induced-ifn%C3%AE-via-cytosolic-mda5-in-experimental-models-of-asthma-exacerbation
#7
Mandy Menzel, Hamid Akbarshahi, Ellen Tufvesson, Carl Persson, Leif Bjermer, Lena Uller
Deficient production of anti-viral interferons (IFNs) may be involved in causing viral-induced asthma exacerbations. Hence, drugs inducing lung IFN production would be warranted. Azithromycin may reduce asthma exacerbations but its modus operandi is unknown. Here, we investigated if azithromycin induces IFNβ expression in vitro in rhinovirus-infected bronchial epithelial cells from asthmatic donors and in vivo in our allergic inflammation-based mouse model of viral stimulus-induced asthma exacerbations. Azithromycin dose-dependently augmented viral-induced IFNβ expression in asthmatic, but not in healthy bronchial epithelial cells...
March 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28412077/influenza-vaccine-effectiveness-estimates-in-the-dutch-population-from-2003-to-2014-the-test-negative-design-case-control-study-with-different-control-groups
#8
Eva van Doorn, Maryam Darvishian, Frederika Dijkstra, Gé A Donker, Pieter Overduin, Adam Meijer, Eelko Hak
Information about influenza vaccine effectiveness (IVE) is important for vaccine strain selection and immunization policy decisions. The test-negative design (TND) case-control study is commonly used to obtain IVE estimates. However, the definition of the control patients may influence IVE estimates. We have conducted a TND study using the Dutch Sentinel Practices of NIVEL Primary Care Database which includes data from patients who consulted the General Practitioner (GP) for an episode of acute influenza-like illness (ILI) or acute respiratory infection (ARI) with known influenza vaccination status...
April 12, 2017: Vaccine
https://www.readbyqxmd.com/read/28411509/direct-acting-antivirals-and-host-targeting-strategies-to-combat-enterovirus-infections
#9
REVIEW
Lisa Bauer, Heyrhyoung Lyoo, Hilde M van der Schaar, Jeroen Rpm Strating, Frank Jm van Kuppeveld
Enteroviruses (e.g., poliovirus, enterovirus-A71, coxsackievirus, enterovirus-D68, rhinovirus) include many human pathogens causative of various mild and more severe diseases, especially in young children. Unfortunately, antiviral drugs to treat enterovirus infections have not been approved yet. Over the past decades, several direct-acting inhibitors have been developed, including capsid binders, which block virus entry, and inhibitors of viral enzymes required for genome replication. Capsid binders and protease inhibitors have been clinically evaluated, but failed due to limited efficacy or toxicity issues...
April 12, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28403045/polymorphisms-of-mannose-binding-lectin-and-toll-like-receptors-2-3-4-7-and-8-and-the-risk-of-respiratory-infections-and-acute-otitis-media-in-children
#10
Laura Toivonen, Juho Vuononvirta, Jussi Mertsola, Matti Waris, Qiushui He, Ville Peltola
BACKGROUND: Mannose-binding lectin (MBL) and toll-like receptors (TLRs) are important components of the innate immune system. We assessed the susceptibility of children with genetic variants in these factors to respiratory infections, rhinovirus infections and acute otitis media. METHODS: In a prospective cohort study, blood samples from 381 Finnish children were analyzed for polymorphisms in MBL2 at codons 52, 54 and 57, TLR2 Arg753Gln, TLR3 Leu412Phe, TLR4 Asp299Gly, TLR7 Gln11Leu and TLR8 Leu651Leu...
May 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28397284/altered-fatty-acid-metabolism-and-reduced-stearoyl-coenzyme-a-desaturase-activity-in-asthma
#11
N Rodriguez-Perez, E Schiavi, R Frei, R Ferstl, P Wawrzyniak, S Smolinska, M Sokolowska, N A Sievi, M Kohler, P Schmid-Grendelmeier, D Michalovich, K D Simpson, E M Hessel, M Jutel, M Martin-Fontecha, O Palomares, C A Akdis, L O'Mahony
BACKGROUND: Fatty acids and lipid mediator signaling play an important role in the pathogenesis of asthma, yet this area remains largely under-explored. The aims of this study were (i) to examine fatty acid levels and their metabolism in obese and non-obese asthma patients and (ii) to determine the functional effects of altered fatty acid metabolism in experimental models. METHODS: Medium- and long-chain fatty acid levels were quantified in serum from 161 human volunteers by LC/MS...
April 11, 2017: Allergy
https://www.readbyqxmd.com/read/28396429/immunochemical-engineering-of-cell-surfaces-to-generate-virus-resistance
#12
Jia Xie, Devin Sok, Nicholas C Wu, Tianqing Zheng, Wei Zhang, Dennis R Burton, Richard A Lerner
Modern immunochemical engineering allows the creation of cells that either secrete antibodies or incorporate them into various cellular compartments, including the plasma membrane. Because the receptors for most viruses are known, if one can achieve the proper stoichiometry and geometry, plasma membrane-associated antibodies to these receptors should block viral infection. In this report, we test this concept for two different viruses, human rhinovirus and HIV. Plasma membrane-tethered antibodies efficiently rendered cells permanently nonpermissive for infection by both these viruses...
April 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28395629/a-clinical-companion-to-the-nice-guide-on-bronchiolitis
#13
Eleanor Rogers, Karen Greaves, Siba Prosad Paul
The National Institute for Health and Care Excellence (NICE) ( 2015 ) defines bronchiolitis as a lower respiratory tract infection affecting children under two years, peaking between three and six months. It affects about one in three infants in the first year of life, making it the most common respiratory infection in infants ( NICE 2015 , 2016 ). Of these infants, 2-3% will require admission to hospital ( NICE 2016 ). Respiratory syncytial virus (RSV) is the most common organism detected in the nasopharyngeal aspirate in hospitalised infants, although other viruses such as rhinovirus, parainfluenza virus, influenza virus, adenovirus and human metapneumovirus are increasingly being recognised ( Paul et al 2016 )...
April 11, 2017: Nursing Children and Young People
https://www.readbyqxmd.com/read/28395404/-prevalence-and-risk-factors-of-respiratory-viral-infection-in-acute-exacerbation-of-chronic-obstructive-pulmonary-disease
#14
X B Du, X Ma, Y Gao, L F Wen, J Li, Z Z Wang, S Liu
Objective: To study the prevalence of respiratory viral infection in chronic obstructive pulmonary disease(COPD) exacerbations and to find the factors associated with susceptibility to viral infections. Methods: Eighty patients with exacerbations of COPD and 50 stable COPD patients were recruited. Nasopharyngeal swabs were tested for a range of 18 different respiratory viruses using PCR. Results: Among the COPD exacerbations, viral infection was detected in 18 episodes (22.5%) . The most common virus was rhinovirus (33...
April 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28393985/-importance-of-respiratory-virus-in-immunocompetent-adult-patients-hospitalized-with-community-acquired-pneumonia
#15
Fernando Saldías Peñafiel, Marcos Ortega Gutiérrez, Gino Fuentes López, José Manuel Elola Aránguiz, Javier Uribe Monasterio, Arturo Morales Soto, Orlando Díaz Patiño
BACKGROUND: Community-acquired pneumonia (CAP) is a relevant worldwide cause of morbidity and mortality in adult population, however its etiology is often not identified and therapy is empirical. AIM: To assess the etiology of CAP in immunocompetent adult hospitalized patients using conventional and molecular diagnostic methods. MATERIAL AND METHODS: We prospectively studied 240 adult patients who were hospitalized for CAP to identify the microbial etiology...
December 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/28390083/high-fractional-exhaled-nitric-oxide-and-sputum-eosinophils-are-associated-with-an-increased-risk-of-future-virus-induced-exacerbations-ndash-a-prospective-cohort-study
#16
Asger Bjerregaard, Ingrid A Laing, Vibeke Backer, Asger Sverrild, Siew-Kim Khoo, Glenys Chidlow, Chisha Sikazwe, David W Smith, Peter Le Souëf, Celeste Porsbjerg
BACKGROUND: The major trigger of asthma exacerbations is infection with a respiratory virus, most commonly rhinovirus. Type 2 inflammation is known to be associated with an increased risk of exacerbations in general. Whether type 2 inflammation at baseline increases the risk of future virus-induced exacerbations is unknown. OBJECTIVE: To assess whether type 2 inflammation is associated with an increased risk of virus-induced exacerbations of asthma. METHODS: Stable asthmatics had spirometry, skin prick test, measurement of FeNO and sputum induced for differential cell counts...
April 8, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28379561/rule-out-outbreak-24-hour-metagenomic-next-generation-sequencing-for-characterizing-respiratory-virus-source-for-infection-prevention
#17
Alexander L Greninger, Alpana Waghmare, Amanda Adler, Xuan Qin, Janet L Crowley, Janet A Englund, Jane M Kuypers, Keith R Jerome, Danielle M Zerr
Background.: Metagenomic next-generation sequencing (mNGS) has been used to uncover unusual causes of infectious diseases but has not been used routinely for the investigation of putative nosocomial outbreaks. Here, we describe the use of mNGS during investigation of a cluster of human rhinovirus (HRV)-positive infections on a high-risk pulmonary ward. Methods.: We performed mNGS on 6 midnasal turbinate swabs from 4 case-patients and 10 swabs from 9 control outpatients that tested positive for enterovirus/rhinovirus by the FilmArray system...
April 4, 2017: Journal of the Pediatric Infectious Diseases Society
https://www.readbyqxmd.com/read/28376123/a-novel-enterovirus-species-identified-from-severe-diarrheal-goats
#18
Mingyue Wang, Jia He, Haibing Lu, Yajing Liu, Yingrui Deng, Lisai Zhu, Changming Guo, Changchun Tu, Xinping Wang
BACKGROUNDS: The Enterovirus genus of the family of Picornaviridae consists of 9 species of Enteroviruses and 3 species of Rhinoviruses based on the latest virus taxonomy. Those viruses contribute significantly to respiratory and digestive disorders in human and animals. Out of 9 Enterovirus species, Enterovirus E-G are closely related to diseases affecting on livestock industry. While enterovirus infection has been increasingly reported in cattle and swine, the enterovirus infections in small ruminants remain largely unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28374250/human-rhinovirus-a1-as-an-expression-vector
#19
Khamis Tomusange, Danushka Wijesundara, Eric James Gowans, Branka Grubor-Bauk
Expression vectors that are based on live human rhinoviruses (HRVs) are attractive, yet often overlooked in vaccine development due to their limited capacity for foreign gene inserts and poor genetic stability. This chapter describes a novel methodology to engineer a replication-competent genetically stable recombinant HRV (rHRV) without affecting viral replication capability. We have previously used these methods to generate live, genetically stable recombinant HRVs encoding HIV Gag and Tat proteins (rHRV-Gag-Tat), a potential mucosally targeted HIV vaccine...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28373249/association-between-rhinovirus-wheezing-illness-and-the-development-of-childhood-asthma-a-meta-analysis
#20
Lu Liu, Yilin Pan, Yanting Zhu, Yang Song, Xiaofan Su, Lan Yang, Manxiang Li
OBJECTIVE: The relation between early-life rhinovirus (RV) wheezing illness and later onset of wheezing/asthma remains a subject of debate. Therefore, we conducted this meta-analysis to evaluate the association between RV wheezing illness in the first 3 years of life and the subsequent development of wheezing/asthma. DESIGN: Systematic review and meta-analysis. METHODS: The PubMed, EMBASE, Web of Science, Chinese National Knowledge Infrastructure (CNKI) and Wanfang databases were systematically searched for studies published between 1988 and February 2017, and additional studies were found by searching reference lists of relevant articles...
April 3, 2017: BMJ Open
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