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RSV bronchiolitis

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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
#1
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
#2
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
#3
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
#4
F Amat, C Plantard, A Mulliez, I Petit, E Rochette, M Verdan, C Henquell, G Labbé, M C Heraud, B Evrard, A Labbé
OBJECTIVE: 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 hospitalisation. DESIGN: 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...
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
#5
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
#6
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
#7
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...
January 12, 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
#8
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
#9
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
#10
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
https://www.readbyqxmd.com/read/29238000/elevation-of-serum-acid-sphingomyelinase-activity-in-children-with-acute-respiratory-syncytial-virus-bronchiolitis
#11
Shuichiro Yoshida, Atsuko Noguchi, Wataru Kikuchi, Hiroshi Fukaya, Kiyoshi Igarashi, Tsutomu Takahashi
Acid sphingomyelinase (ASM) is a lysosomal enzyme that hydrolyzes sphingomyelin into ceramide, a bioactive lipid to regulate cellular physiological functions. Thus, ASM activation has been reported as a key event in pathophysiological reactions including inflammation, cytokine release, oxidative stress, and endothelial damage in human diseases. Since ASM activation is associated with extracellular ASM secretion through unknown mechanisms, it can be detected by recognizing the elevation of secretory ASM (S-ASM) activity...
2017: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29230219/functional-impairment-of-mononuclear-phagocyte-system-by-the-human-respiratory-syncytial-virus
#12
REVIEW
Karen Bohmwald, Janyra A Espinoza, Raúl A Pulgar, Evelyn L Jara, Alexis M Kalergis
The mononuclear phagocyte system (MPS) comprises of monocytes, macrophages (MΦ), and dendritic cells (DCs). MPS is part of the first line of immune defense against a wide range of pathogens, including viruses, such as the human respiratory syncytial virus (hRSV). The hRSV is an enveloped virus that belongs to the Pneumoviridae family, Orthopneumovirus genus. This virus is the main etiological agent causing severe acute lower respiratory tract infection, especially in infants, children and the elderly. Human RSV can cause bronchiolitis and pneumonia and it has also been implicated in the development of recurrent wheezing and asthma...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29227860/respiratory-syncytial-virus-in-brazilian-infants-ten-years-two-cohorts
#13
Elinara Wollmeister, Alfonso Eduardo Alvarez, Juliana Cristina Santiago Bastos, Fernando Augusto Lima Marson, José Dirceu Ribeiro, Emílio Carlos Elias Baracat, Clarice Weis Arns, Adriana Gut Lopes Riccetto
BACKGROUND: Each year, a considerable amount of children will experience at least one episode of acute viral bronchiolitis (AVB) during their first year of life. About 10% of them will be hospitalized, with significant physical and economic burdens. OBJECTIVES: To compare two cohorts of infants with AVB, from same region, in a ten-year interval, regarding epidemiologic factors and viral etiology. STUDY DESIGN: Cohorts: 142 (2004) and 172 (2014) infants at ages zero to 12 months; clinical diagnosis of AVB; medical care in hospital and genetic screening of nasopharyngeal secretion for respiratory viruses...
December 6, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29226974/acute-bronchiolitis-influence-of-viral-co-infection-in-infants-hospitalized-over-12-consecutive-epidemic-seasons
#14
Laura Petrarca, Raffaella Nenna, Antonella Frassanito, Alessandra Pierangeli, Salvatore Leonardi, Carolina Scagnolari, Guido Antonelli, Paola Papoff, Corrado Moretti, Fabio Midulla
Bronchiolitis is the first lower respiratory tract viral infection manifesting in infants younger than 12 months of age. Our aim was to evaluate clinical and serological differences in infants with bronchiolitis from a single or from multiple viruses. Our secondary aim was to investigate differences in recurrent wheezing episodes after 12-24-36 months of follow-up. We reviewed the clinical records for 486 full-term infants hospitalized for bronchiolitis with at least one virus detected in the nasopharyngeal aspirate...
December 11, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/29178427/cd38-modulates-respiratory-syncytial-virus-driven-pro-inflammatory-processes-in-human-monocyte-derived-dendritic-cells
#15
Ilaria Schiavoni, Carolina Scagnolari, Alberto L Horenstein, Pasqualina Leone, Alessandra Pierangeli, Fabio Malavasi, Clara M Ausiello, Giorgio Fedele
Respiratory Syncytial Virus (RSV) is the most common cause of hospitalization due to bronchiolitis in infants. Although the mechanisms behind this association are not completely elucidated, they appear to involve an excessive immune response causing lung pathology. Understanding the host response to RSV infection may help in the identification of targets for therapeutic intervention. We infected in vitro human monocyte-derived dendritic cells (DCs) with RSV and analysed various aspects of the cellular response...
November 27, 2017: Immunology
https://www.readbyqxmd.com/read/29162850/whole-exome-sequencing-reveals-new-candidate-genes-in-host-genomic-susceptibility-to-respiratory-syncytial-virus-disease
#16
Antonio Salas, Jacobo Pardo-Seco, Miriam Cebey-López, Alberto Gómez-Carballa, Pablo Obando-Pacheco, Irene Rivero-Calle, María-José Currás-Tuala, Jorge Amigo, José Gómez-Rial, Federico Martinón-Torres
Respiratory syncytial virus (RSV) is an important cause of serious lower respiratory tract disease in infants. Several studies have shown evidence pointing to the genome of the host as an important factor determining susceptibility to respiratory disease caused by RSV. We sequenced the complete exomes of 54 patients infected by RSV that needed hospitalization due to development of severe bronchiolitis. The Iberian sample (IBS) from The 1000 Genomes Project (1000G) was used as control group; all the association results were pseudo-replicated using other 1000G-European controls and Spanish controls...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29149778/the-changes-of-th17-treg-and-related-cytokines-il-17-il-23-il-10-and-tgf-%C3%AE-in-respiratory-syncytial-virus-bronchiolitis-rat-model
#17
Meng Gao, Liang-Xiao Liu, Fu-Ling Wu, Xuejing Zhang, Ying-Ying Li, Tao Shi, De-Zhi Li, Ting-Ting Han
Respiratory syncytial virus (RSV) is the leading cause of bronchiolitis and hospitalization that lead to high morbidity and mortality among young infants. T helper 17 (Th17) cells and regulatory T cells (Tregs) play essential roles in the pathogenesis of autoimmune, cancer, and inflammatory diseases. However, whether changes in T-cell subsets are related to the systemic immune responses in RSV-caused bronchiolitis merit further investigation. Three-week-old Sprague Dawley (SD) rats were randomly divided into the normal control (NC) and RSV bronchiolitis (RSV-B) groups...
October 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/29149199/epidemiology-and-clinical-profile-of-pathogens-responsible-for-the-hospitalization-of-children-in-sousse-area-tunisia
#18
Ines Brini, Aida Guerrero, Naila Hannachi, Jihene Bouguila, Dorothea Orth-Höller, Amira Bouhlel, Lamia Boughamoura, Benjamin Hetzer, Wegene Borena, Britta Schiela, Dorothee Von Laer, Jalel Boukadida, Heribert Stoiber
This study aimed to identify a broad spectrum of respiratory pathogens from hospitalized and not-preselected children with acute respiratory tract infections in the Farhat Hached University-hospital of Sousse, Tunisia. Between September 2013 and December 2014, samples from 372 children aged between 1 month and 5 years were collected, and tested using multiplex real-time RT-PCR by a commercial assay for 21 respiratory pathogens. In addition, samples were screened for the presence of Streptococcus pneumoniae 16S rDNA using real-time PCR...
2017: PloS One
https://www.readbyqxmd.com/read/29045741/respiratory-syncytial-virus-genotypes-host-immune-profiles-and-disease-severity-in-young-children-hospitalized-with-bronchiolitis
#19
Rosa Rodriguez-Fernandez, Lorena I Tapia, Chin-Fen Yang, Juan Pablo Torres, Susana Chavez-Bueno, Carla Garcia, Lisa M Jaramillo, Melissa Moore-Clingenpeel, Hasan S Jafri, Mark E Peeples, Pedro A Piedra, Octavio Ramilo, Asuncion Mejias
Background: Data on how RSV genotypes influence disease severity and host immune responses is limited. We characterized the genetic variability of RSV during five seasons, and evaluated the role of RSV subtypes, genotypes and viral loads on disease severity and host transcriptional profiles. Methods: Prospective, observational study including a convenience sample of healthy infants hospitalized with RSV bronchiolitis. Nasopharyngeal samples for viral load quantitation, typing and genotyping, and blood samples for transcriptome analyses were obtained within 24h of hospitalization...
October 17, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29021713/epidemiology-of-bronchiolitis-a-description-of-emergency-department-visits-and-hospitalizations-in-puerto-rico-2010-2014
#20
Andrea Rivera-Sepulveda, Enid J Garcia-Rivera
BACKGROUND: Little is known about the epidemiology of bronchiolitis as a clinical diagnosis and its impact on emergency department visits and hospitalizations in tropical and semitropical regions. We described the epidemiology of bronchiolitis emergency visits and hospitalizations, its temporal trend and geographic distribution in Puerto Rico between 2010 and 2014. METHODS: We performed a retrospective descriptive analysis of a representative sample of privately insured children with bronchiolitis from January 2010 to December 2014...
2017: Tropical Medicine and Health
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