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RSV bronchiolitis

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https://www.readbyqxmd.com/read/29678751/glucagon-like-peptide-1-receptor-signaling-attenuates-rsv-induced-type-2-responses-and-immunopathology
#1
Melissa H Bloodworth, Mark Rusznak, Connor C Pfister, Jian Zhang, Lisa Bastarache, Sandra Alvarez Calvillo, James D Chappell, Kelli L Boyd, Shinji Toki, Dawn C Newcomb, Matthew T Stier, Weisong Zhou, Kasia Goleniewska, Martin L Moore, Tina V Hartert, Kevin D Niswender, R Stokes Peebles
GLP-1R signaling, an emerging anti-inflammatory therapeutic target, attenuated type 2-associated immunopathology in mice infected with a strain of RSV that was isolated from a hospitalized infant with severe lower respiratory tract infection and bronchiolitis.
April 17, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29627312/-does-heliox-administered-by-low-flow-nasal-cannula-improve-respiratory-distress-in-infants-with-respiratory-syncytial-virus-acute-bronchiolitis-a-randomized-controlled-trial
#2
Wael Seliem, Amira M Sultan
OBJECTIVES: The aim of our study is to evaluate whether the use of heliox (79:21) delivered through a low flow nasal cannula would improve respiratory distress in infants with acute bronchiolitis caused by respiratory syncytial virus. METHODS: We have conducted a prospective randomized controlled study. All patients fulfilled inclusion criteria were randomized to either heliox (79:21) or air via NC at 2 L/min for a continuous 24hours. Measurements were taken at baseline, after 2hours and at the end of the 24hours...
April 4, 2018: Anales de Pediatría: Publicación Oficial de la Asociación Española de Pediatría (A.E.P.)
https://www.readbyqxmd.com/read/29615018/respiratory-syncytial-virus-tracking-using-internet-search-engine-data
#3
Eyal Oren, Justin Frere, Eran Yom-Tov, Elad Yom-Tov
BACKGROUND: Respiratory Syncytial Virus (RSV) is the leading cause of hospitalization in children less than 1 year of age in the United States. Internet search engine queries may provide high resolution temporal and spatial data to estimate and predict disease activity. METHODS: After filtering an initial list of 613 symptoms using high-resolution Bing search logs, we used Google Trends data between 2004 and 2016 for a smaller list of 50 terms to build predictive models of RSV incidence for five states where long-term surveillance data was available...
April 3, 2018: BMC Public Health
https://www.readbyqxmd.com/read/29613970/transient-tachypnea-of-the-newborn-is-associated-with-an-increased-risk-of-hospitalization-due-to-rsv-bronchiolitis
#4
Santtu Heinonen, Liina Süvari, Mika Gissler, Olli Pitkänen, Sture Andersson, Otto Helve
BACKGROUND: Transient tachypnea of the newborn (TTN) is a self-limiting respiratory disorder, resulting from a failure to clear the lungs of perinatal fluid. As similar pathophysiological features are present in children with respiratory syncytial virus (RSV) bronchiolitis, we hypothesized that these two conditions may be connected. METHODS: This was a population-based cohort study that included all children born in term (≥37 weeks of gestation) without congenital malformations in Finland between 1996 and 2015...
April 2, 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29599087/a-novel-method-for-strict-intranasal-delivery-of-non-replicating-rsv-vaccines-in-cotton-rats-and-non-human-primates
#5
Michael P Citron, Manishkumar Patel, Mona Purcell, Shu-An Lin, Daniel J Rubins, Paul McQuade, Cheryl Callahan, Alexa Gleason, Ioan Petrescu, Walter Knapp, Chinedu Orekie, Sai Chamarthy, Zhiyun Wen, Sinoeun Touch, Matthew Pine, Jane Fontenot, Cameron Douglas, Xiaoping Liang, Amy S Espeseth
Respiratory syncytial virus (RSV) is the most common viral cause of bronchiolitis and pneumonia in children twelve months of age or younger and a significant cause of lower respiratory disease in older adults. As various clinical and preclinical candidates advance, cotton rats (Sigmodon hispidus) and non-human primates (NHP) continue to play a valuable role in RSV vaccine development, since both animals are semi-permissive to human RSV (HRSV). However, appropriate utilization of the models is critical to avoid mis-interpretation of the preclinical findings...
March 26, 2018: Vaccine
https://www.readbyqxmd.com/read/29593031/central-role-of-the-nf%C3%AE%C2%BAb-pathway-in-the-scgb1a1-expressing-epithelium-in-mediating-respiratory-syncytial-virus-induced-airway-inflammation
#6
Bing Tian, Jun Yang, Yingxin Zhao, Teodora Ivanciuc, Hong Sun, Maki Wakamiya, Roberto P Garofalo, Allan R Brasier
Lower respiratory tract infection with respiratory syncytial virus (RSV) produces profound inflammation. Despite an understanding of the role of adaptive immunity in RSV infection, the identity of the major sentinel cells initially triggering inflammation is controversial. Here we evaluate the role of nonciliated secretoglobin ( Scgb1a1 )-expressing bronchiolar epithelial cells in RSV infection. Knock-in mice expressing a tamoxifen (TMX)-inducible Cre recombinase (CreERTM ) from the Scgb1a1 locus were crossed with mice that harbor a RelA conditional allele ( RelAfl ), with loxP sites flanking exons 5-8 of the Rel homology domain...
March 28, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29549834/interferon-lambda-receptor-1-ifnl1r-transcript-is-highly-expressed-in-rhinovirus-bronchiolitis-and-correlates-with-disease-severity
#7
Alessandra Pierangeli, Maura Statzu, Raffaella Nenna, Letizia Santinelli, Laura Petrarca, Antonella Frassanito, Massimo Gentile, Guido Antonelli, Fabio Midulla, Carolina Scagnolari
BACKGROUND: As the expression of type III IFN receptor is restricted to the mucosal surfaces, its evaluation could be crucial to characterize the role of IFNλs during bronchiolitis. OBJECTIVES: This study was designed to investigate airway type III IFN receptor (IFNLR1/IL10RB) expression during respiratory syncytial virus (RSV) or human rhinovirus (HRV) bronchiolitis. STUDY DESIGN: Seventy-one 1-6 month old infants hospitalized with their first episode of acute RSV or HRV bronchiolitis were selected for this study...
March 10, 2018: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29525802/respiratory-syncytial-virus-bronchiolitis-and-hypertransaminasemia
#8
Salvatore Giordano, Maria Di Gangi, Maria Concetta Failla, Lucrezia Bruno, Veronica Falcone, Piera Dones
Bronchiolitis is the most common disease of the lower respiratory tract occurring in children during their first year of life, becoming the most frequent cause of hospitalization. Although the disease can also be caused by other viruses, more than 70% of bronchiolitis cases are caused by respiratory syncytial virus (RSV). RSV bronchiolitis clinically presents rhinitis, coughing, increased breathing and eating difficulties; the symptoms are usually mild, but in some cases may be so severe as to require hospitalization...
March 1, 2018: Le Infezioni in Medicina
https://www.readbyqxmd.com/read/29510513/molecular-requirements-for-self-interaction-of-the-respiratory-syncytial-virus-matrix-protein-in-living-mammalian-cells
#9
Marta Trevisan, Veronica Di Antonio, Annalisa Radeghieri, Giorgio Palù, Reena Ghildyal, Gualtiero Alvisi
Respiratory syncytial virus (RSV) is an important human pathogen, which infects respiratory tract epithelial cells causing bronchiolitis and pneumonia in children and the elderly. Recent studies have linked RSV matrix (M) ability to self-interaction and viral budding. However, RSV M has been crystalized both as a monomer and a dimer, and no formal proof exists to date that it forms dimers in cells. Here, by using a combination of confocal laser scanning microscopy and bioluminescent resonant energy transfer applied to differently tagged deletion mutants of RSV M, we show that the protein can self-interact in living mammalian cells and that both the N and C-terminus of the protein are strictly required for the process, consistent with the reported dimeric crystal structure...
March 3, 2018: Viruses
https://www.readbyqxmd.com/read/29489664/risk-factors-for-severe-bronchiolitis-caused-by-respiratory-virus-infections-among-mexican-children-in-an-emergency-department
#10
Mireya Robledo-Aceves, María de Jesús Moreno-Peregrina, Fernando Velarde-Rivera, Elba Ascencio-Esparza, Francisco M Preciado-Figueroa, Miguela A Caniza, Griselda Escobedo-Melendez
Severe bronchiolitis is the most common reason for hospitalization among children younger than 2 years. This study analyzed the prevalence of community-acquired respiratory virus infection and the risk factors for hospitalization of Mexican children with severe bronchiolitis treated in an Emergency department.This retrospective study included 134 children 2 years or younger with severe viral bronchiolitis, and 134 healthy age-matched controls. The study period was September 2012 to January 2015. We determined the viral etiology and coinfections with multiple viruses and compared the risk factors detected in children with severe viral bronchiolitis with those in the control group...
March 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29444701/a-case-series-on-common-cold-to-severe-bronchiolitis-and-pneumonia-in-children-following-human-metapneumovirus-infection-in-sri-lanka
#11
J A A S Jayaweera, F Noordeen, S Kothalaweala, F N N Pitchai, M L M Rayes
OBJECTIVES: The prevalence of hMPV infections in Sri Lanka has not been reported and here we report a case series of hMPV infection in children less than 5 years. Patients with ARTI were included from Teaching Hospital, Anuradhapura from March 2013 to August 2014. Indirect fluorescence assay was performed on nasopharyngeal aspirates for the identification of respiratory viruses [respiratory syncytial virus (RSV), parainfluenza virus 1, 2 and 3, influenza A and B and hMPV]. Moreover, reverse transcriptase-polymerase chain reaction was done to further confirm the hMPV infection...
February 14, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29436781/rsv-prophylaxis-guideline-changes-and-outcomes-in-children-with-congenital-heart-disease
#12
Adam S Walpert, Ian D Thomas, Merlin C Lowe, Michael D Seckeler
OBJECTIVE: The aim of this study was to compare inpatient outcomes and costs for children with respiratory syncytial virus and congenital heart disease before and after the change in management guidelines for respiratory syncytial virus prophylaxis. DESIGN: Hospital discharge data from the Vizient (formerly University HealthSystem Consortium) were queried from October 2012 to June 2014 (Era 1) and July 2014 to April 2016 (Era 2) for patients aged <24 months with an any International Classification of Disease (ICD)-9 or ICD-10 code for congenital heart disease (745-747...
February 13, 2018: Congenital Heart Disease
https://www.readbyqxmd.com/read/29401325/safety-and-immunogenicity-of-3-formulations-of-an-investigational-respiratory-syncytial-virus-vaccine-in-non-pregnant-women-results-from-two-phase-ii-trials
#13
Jiri Beran, Jason D Lickliter, Tino F Schwarz, Casey Johnson, Laurence Chu, Joseph B Domachowske, Pierre Van Damme, Kanchanamala Withanage, Laurence A Fissette, Marie-Pierre David, Koen Maleux, Alexander C Schmidt, Marta Picciolato, Ilse Dieussaert
Background: Respiratory syncytial virus (RSV) causes bronchiolitis and pneumonia in neonates and infants. RSV vaccination during pregnancy could boost pre-existing neutralizing antibody titers, providing passive protection to newborns. Methods: Two observer-blind, controlled studies (RSV F-020 [NCT02360475], RSV F-024 [NCT02753413]) evaluated immunogenicity and safety of an investigational RSV vaccine in healthy, non-pregnant 18-45-year-old women. Both studies used licensed Tdap vaccine as control...
February 1, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29380391/rsv-hrv-co-infection-is-a-risk-factor-for-recurrent-bronchial-obstruction-and-early-sensitization-3-years-after-bronchiolitis
#14
Flore Amat, Chloé Plantard, Aurélien Mulliez, Isabelle Petit, Emmanuelle Rochette, Matthieu Verdan, Cécile Henquell, Guillaume Labbé, Marie Christine Heraud, Bertrand Evrard, André Labbé
To assess risk factors of recurrent bronchial obstruction and allergic sensitization 3 years after an episode of acute bronchiolitis, whether after ambulatory care treatment or hospitalization. A monocentric prospective longitudinal study including infants aged under 1 year with acute bronchiolitis was performed, with clinical (severity score), biological (serum Krebs von den Lungen 6 antigen), and viral (14 virus by naso-pharyngeal suction detection) assessments. Follow-up included a quaterly telephone interview, and a final clinical examination at 3 years...
January 30, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29379110/transaminase-levels-reflect-disease-severity-in-children-ventilated-for-respiratory-syncytial-virus-rsv-bronchiolitis
#15
Kentigern Thorburn, Crawford Fulton, Charlotte King, Difijah Ramaneswaran, Abdulaziz Alammar, Paul S McNamara
Bronchiolitis, often caused by respiratory syncytial virus (RSV), is the commonest cause of hospitalisation in infancy. Serum transaminases are sometimes raised in children with bronchiolitis. We tested the hypothesis that raised transaminases are associated with increased disease severity in children ventilated for bronchiolitis. Prospective observational cohort study of mechanically ventilated children with community-acquired RSV bronchiolitis. Alanine transaminase (ALT) and aspartate transaminase (AST) levels were measured daily...
January 29, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29351636/effectiveness-of-respiratory-syncytial-virus-immunoprophylaxis-on-bronchiolitis-hospitalizations-among-high-risk-infants
#16
Pingsheng Wu, Gabriel J Escobar, Tebeb Gebretsadik, Kecia N Carroll, Sherian X Li, Eileen M Walsh, Edward F Mitchel, Chantel Sloan, William D Dupont, Chang Yu, Jeffrey R Horner, Tina V Hartert
We sought to determine the real-world effectiveness of respiratory syncytial virus (RSV) immunoprophylaxis in a population-based cohort to inform policy. The study population included infants born 1996-2008 and enrolled in Kaiser Permanente Northern California. During the RSV season (November-March), RSV immunoprophylaxis administration and the following 30 days were defined as RSV immunoprophylaxis protected period(s), and all other days as unprotected period(s). Bronchiolitis hospitalizations were determined using the International Classification of Diseases Ninth Revision codes during RSV season...
January 17, 2018: American Journal of Epidemiology
https://www.readbyqxmd.com/read/29327810/nebulized-hypertonic-saline-in-infants-hospitalized-with-moderately-severe-bronchiolitis-due-to-rsv-infection-a-multicenter-randomized-controlled-trial
#17
Yoshihiko Morikawa, Masaru Miura, Megumi Y Furuhata, Saeko Morino, Tae Omori, Masahiro Otsuka, Michiko Chiga, Toshimasa Obonai, Hiroshi Hataya, Tetsuji Kaneko, Kenji Ishikura, Masataka Honda, Yukihiro Hasegawa
INTRODUCTION: The efficacy of nebulized hypertonic saline (HS) therapy for shortening hospital length of stay (LOS) or improving bronchiolitic symptoms remains controversial. Most studies enrolled small numbers of subjects and did not consider the role of respiratory syncytial virus (RSV), the most common cause of acute bronchiolitis. Our aim was to evaluate the efficacy and safety of nebulized HS therapy for acute bronchiolitis due to RSV in moderately ill hospitalized infants. MATERIALS AND METHODS: This was an open-label, multicenter, randomized controlled trial comparing a nebulized HS treatment group with a normal saline (NS) group...
March 2018: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29298247/the-effect-of-early-knowledge-of-respiratory-syncytial-virus-positivity-on-medical-decision-making-and-throughput-time-within-the-pediatric-emergency-department
#18
Jessica Schnell, Lisa Schroeder, Kelly Sinclair, Lina Patel, Denise Dowd
OBJECTIVE: The aim of this study was to evaluate whether early knowledge of respiratory syncytial virus (RSV) positivity by rapid triage-based testing protocol improved emergency department (ED) throughput time and decreased ED ancillary testing and antibiotic administration. METHODS: A retrospective cohort study was performed of ED patients aged 2 to 12 months, presenting November 1 to March 31 for the years 2008-2013. Included patients presented with fever and upper respiratory tract symptoms...
January 2, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29250560/pulmonary-susceptibility-of-neonates-to-respiratory-syncytial-virus-infection-a-problem-of-innate-immunity
#19
REVIEW
Carole Drajac, Daphné Laubreton, Sabine Riffault, Delphyne Descamps
Human respiratory syncytial virus (RSV) is a common and highly contagious viral agent responsible for acute lower respiratory infection in infants. This pathology characterized by mucus hypersecretion and a disturbed T cell immune response is one of the major causes of infant hospitalization for severe bronchiolitis. Although different risk factors are associated with acute RSV bronchiolitis, the immunological factors contributing to the susceptibility of RSV infection in infants are not clearly elucidated...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/29244796/rsv-vs-rhinovirus-bronchiolitis-difference-in-nasal-airway-microrna-profiles-and-nf%C3%AE%C2%BAb-signaling
#20
Kohei Hasegawa, Marcos Pérez-Losada, Claire E Hoptay, Samuel Epstein, Jonathan M Mansbach, Stephen J Teach, Pedro A Piedra, Carlos A Camargo, Robert J Freishtat
BackgroundAlthough rhinovirus infection is associated with increased risks of acute and chronic respiratory outcomes during childhood compared with respiratory syncytial virus (RSV), the underlying mechanisms remain unclear. We aimed to determine the differences in nasal airway microRNA profiles and their downstream effects between infants with rhinovirus and RSV bronchiolitis.MethodsAs part of a multicenter cohort study of infants hospitalized for bronchiolitis, we examined nasal samples obtained from 16 infants with rhinovirus and 16 infants with RSV...
January 17, 2018: Pediatric Research
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