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Respiratory Syncytial Virus Infection in Childrens

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https://www.readbyqxmd.com/read/28822432/-clinical-analysis-of-children-with-pertussis-and-significance-of-respiratory-virus-detection-in-the-combined-diagnosis
#1
H Huang, L Deng, F Xiao, J Fu, J Deng, F Wang, J Yang
Objective: To analyze the clinical data of children with pertussis and explore the necessity of respiratory virus detection in the combined diagnosis so as to improve the clinician's understanding and standardize the diagnosis and treatment of pertussis in children. Method: Clinical data and laboratory examination of 195 suspected pertussis children between Jan. 2015 and Dec. 2016 in Children's Hospital Affiliated to Capital Institute of Pediatric were analyzed retrospectively. Result: The nasopharyngeal secretions were collected from 195 suspected pertussis children, PCR was employed to detect the nucleic acid of Bordetella pertussis...
August 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28808938/advances-in-vaccines-to-prevent-viral-respiratory-illnesses-in-children
#2
Aleisha J Anderson, Tom L Snelling, Hannah C Moore, Christopher C Blyth
Childhood vaccination has played a critical role in the reduction of morbidity and mortality from communicable diseases, including specific respiratory pathogens. Acute lower respiratory infection (ALRI) of both bacterial and viral aetiology continues to impact global child health. Key bacterial pathogens including Streptococcus pneumoniae and Haemophilus influenza type b are specifically targeted with current vaccination programmes, while at present there are less effective strategies for the prevention of viral disease...
August 14, 2017: Paediatric Drugs
https://www.readbyqxmd.com/read/28772168/prevalence-and-seasonality-of-six-respiratory-viruses-during-five-consecutive-epidemic-seasons-in-belgium
#3
Kaat Ramaekers, Els Keyaerts, Annabel Rector, Annie Borremans, Kurt Beuselinck, Katrien Lagrou, Marc Van Ranst
BACKGROUND: Acute Respiratory Infections (ARIs) are a major health problem, especially in young children and the elderly. OBJECTIVES: Insights into the seasonality of respiratory viruses can help us understand when the burden on society is highest and which age groups are most vulnerable. STUDY DESIGN: We monitored six respiratory viruses during five consecutive seasons (2011-2016) in Belgium. Patient specimens (n=22876), tested for one or more of the following respiratory viruses, were included in this analysis: Influenza viruses (IAV & IBV), Human respiratory syncytial virus (hRSV), Human metapneumovirus (hMPV), Adenovirus (ADV) and Human parainfluenza virus (hPIV)...
July 23, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28765656/-comparison-of-clinical-features-and-diagnosis-between-the-a-and-b-subgroups-of-respiratory-syncytial-virus
#4
N Viguria Sánchez, L Moreno-Galarraga, A Navascués Ortega, C Ezpeleta Baquedano, A González-Benavides, M Mendizabal Diez, E Bernaola Iturbe, J Castilla Catalán
BACKGROUND: Lower respiratory tract infection by respiratory syncytial virus (RSV) is the most frequent cause of admission in children under 2 years old. The RSV subgroups A and B may circulate simultaneously. We aimed to determine whether clinical differences exist between RSV subgroups A and B. Additionally, we tested the sensitivity of the rapid antigen detection test (RADT) based on immunochromatography in diagnosing subgroups A and B, taking the polymerase chain reaction assay (RT-PCR) as reference...
July 28, 2017: Anales del Sistema Sanitario de Navarra
https://www.readbyqxmd.com/read/28761099/therapeutic-efficacy-of-a-respiratory-syncytial-virus-fusion-inhibitor
#5
Dirk Roymans, Sarhad S Alnajjar, Michael B Battles, Panchan Sitthicharoenchai, Polina Furmanova-Hollenstein, Peter Rigaux, Joke Van den Berg, Leen Kwanten, Marcia Van Ginderen, Nick Verheyen, Luc Vranckx, Steffen Jaensch, Eric Arnoult, Richard Voorzaat, Jack M Gallup, Alejandro Larios-Mora, Marjolein Crabbe, Dymphy Huntjens, Pierre Raboisson, Johannes P Langedijk, Mark R Ackermann, Jason S McLellan, Sandrine Vendeville, Anil Koul
Respiratory syncytial virus is a major cause of acute lower respiratory tract infection in young children, immunocompromised adults, and the elderly. Intervention with small-molecule antivirals specific for respiratory syncytial virus presents an important therapeutic opportunity, but no such compounds are approved today. Here we report the structure of JNJ-53718678 bound to respiratory syncytial virus fusion (F) protein in its prefusion conformation, and we show that the potent nanomolar activity of JNJ-53718678, as well as the preliminary structure-activity relationship and the pharmaceutical optimization strategy of the series, are consistent with the binding mode of JNJ-53718678 and other respiratory syncytial virus fusion inhibitors...
August 1, 2017: Nature Communications
https://www.readbyqxmd.com/read/28751894/transient-depletion-of-cd169-cells-contributes-to-impaired-early-protection-and-effector-cd8-t-cell-recruitment-against-mucosal-respiratory-syncytial-virus-infection
#6
Dong Sun Oh, Ji Eun Oh, Hi Eun Jung, Heung Kyu Lee
Respiratory syncytial virus (RSV) is a major cause of respiratory viral infections in infants and children. Alveolar macrophages (AMs) play a crucial role in combatting airborne pathogens, strongly express CD169, and are localized in the lung alveoli. Therefore, we used CD169-diphtheria toxin receptor (DTR) transgenic mice to explore the roles of CD169(+) cells in immune responses to mucosal RSV infection. The administration of diphtheria toxin to CD169-DTR mice induced specific AM depletion and reduced the recruitment of Ly6C(hi) monocytes...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28747497/the-genetic-stability-of-piv5-vectored-rsv-vaccine-candidates-after-in-vitro-and-in-vivo-passage
#7
Shannon I Phan, Carolyn M Adam, Zhenhai Chen, Michael Citron, Xiaoping Liang, Amy S Espeseth, Dai Wang, Biao He
Human respiratory syncytial virus (RSV) is the leading etiologic agent of lower respiratory tract infections in children, but no licensed vaccine exists. Previously, our laboratory developed two parainfluenza virus 5 (PIV5)-based RSV vaccine candidates that protect mice against RSV challenge. PIV5 was engineered to express either the RSV fusion protein (F) or the RSV major attachment glycoprotein (G) between the HN and L genes of the PIV5 genome [PIV5-RSV-F (HN-L) or PIV5-RSV-G (HN-L)]. To investigate the stability of the vaccine candidates in vitro, they were passaged in Vero cells at high and low multiplicities of infection (MOI) for eleven generations and the genome sequences, growth kinetics, and protein expression of the resulting viruses were compared with those of the parent viruses...
July 26, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28726613/human-metapneumovirus-and-other-respiratory-viral-infections-during-pregnancy-and-birth-nepal
#8
Jennifer L Lenahan, Janet A Englund, Joanne Katz, Jane Kuypers, Anna Wald, Amalia Magaret, James M Tielsch, Subarna K Khatry, Stephen C LeClerq, Laxman Shrestha, Mark C Steinhoff, Helen Y Chu
Human metapneumovirus (HMPV) is a respiratory virus that can cause severe lower respiratory tract disease and even death, primarily in young children. The incidence and characteristics of HMPV have not been well described in pregnant women. As part of a trial of maternal influenza immunization in rural southern Nepal, we conducted prospective, longitudinal, home-based active surveillance for febrile respiratory illness during pregnancy through 6 months postpartum. During 2011-2014, HMPV was detected in 55 of 3,693 women (16...
August 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28716935/severe-viral-respiratory-infections-in-children-with-ifih1-loss-of-function-mutations
#9
Samira Asgari, Luregn J Schlapbach, Stéphanie Anchisi, Christian Hammer, Istvan Bartha, Thomas Junier, Geneviève Mottet-Osman, Klara M Posfay-Barbe, David Longchamp, Martin Stocker, Samuel Cordey, Laurent Kaiser, Thomas Riedel, Tony Kenna, Deborah Long, Andreas Schibler, Amalio Telenti, Caroline Tapparel, Paul J McLaren, Dominique Garcin, Jacques Fellay
Viral respiratory infections are usually mild and self-limiting; still they exceptionally result in life-threatening infections in previously healthy children. To investigate a potential genetic cause, we recruited 120 previously healthy children requiring support in intensive care because of a severe illness caused by a respiratory virus. Using exome and transcriptome sequencing, we identified and characterized three rare loss-of-function variants in IFIH1, which encodes an RIG-I-like receptor involved in the sensing of viral RNA...
August 1, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28709160/effectiveness-of-palivizumab-in-high-risk-infants-and-children-a-propensity-score-weighted-regression-analysis
#10
Evan J Anderson, Phyllis Carosone-Link, Ram Yogev, Jumi Yi, Eric A F Simões
BACKGROUND: Infants with premature birth ≤35 weeks gestational age, chronic lung disease of prematurity and congenital heart disease are at an increased risk for lower respiratory tract infections and hospitalization from respiratory syncytial virus (RSV), which has been shown in randomized trials to be prevented by palivizumab. However, palivizumab effectiveness (PE) has not been studied in a large clinical setting. METHODS: A multicenter study among high-risk US and Canadian children younger than 24 months hospitalized with lower respiratory tract infection and whose nasopharyngeal aspirates were tested for human metapneumovirus (HMPV) and RSV were the subjects of the trial...
August 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28708049/identification-of-two-novel-functional-trna-derived-fragments-induced-in-response-to-respiratory-syncytial-virus-infection
#11
Jiehua Zhou, Shenxuan Liu, Yu Chen, Yu Fu, Alexander J Silver, Mark S Hill, Inhan Lee, Yong Sun Lee, Xiaoyong Bao
Respiratory syncytial virus (RSV) is the leading cause of lower respiratory tract infection (LRTI) in children from infancy up to early childhood. Recently, we demonstrated that RSV infection alters cellular small non-coding RNA (sncRNA) expression, most notably the tRNA-derived RNA fragments (tRFs). However, the functions of the tRFs in virus-host interaction are largely unknown. Herein, we examined the role of three RSV-induced tRFs derived from the 5-end of mature tRNAs decoding GlyCCC, LysCTT and CysGCA (named tRF5-GlyCCC, tRF5-LysCTT and tRF5-CysGCA, respectively) in controlling RSV replication...
July 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28702128/a-novel-host-factor-for-human-respiratory-syncytial-virus
#12
COMMENT
Masfique Mehedi, Peter L Collins, Ursula J Buchholz
Human respiratory syncytial virus (RSV) is the leading viral cause of severe lower respiratory disease in young children worldwide. As part of a genome-wide siRNA screen, we recently discovered that actin-related protein 2 (ARP2) is a host factor in the RSV replication cycle. ARP2 is a major constituent of the ARP2/3 complex, which catalyzes actin polymerization involved in cell morphology and motility. In the course of investigating this finding, we also found that RSV infection of human lung epithelial A459 cells induced filopodia formation and stimulated cell motility...
2017: Communicative & Integrative Biology
https://www.readbyqxmd.com/read/28695368/an-interaction-of-lps-and-rsv-infection-in-augmenting-the-ahr-and-airway-inflammation-in-mice
#13
Na Zhou, Wei Li, Luo Ren, Xiaohong Xie, Enmei Liu
Respiratory syncytial virus (RSV) is the leading cause of acute lower respiratory tract infection (LRTI) in children under 5 years of age, especially infants with severe bronchiolitis. Our preliminary clinical experiments showed that bacterial colonization was commonly observed in children with virus-induced wheezing, particularly in those with recurrent wheezing, suggesting that bacterial colonization with an accompanying viral infection may contribute to disease severity. In most cases, RSV-infected infants were colonized with pathogenic bacteria (mainly Gram-negative bacteria)...
July 10, 2017: Inflammation
https://www.readbyqxmd.com/read/28689664/global-regional-and-national-disease-burden-estimates-of-acute-lower-respiratory-infections-due-to-respiratory-syncytial-virus-in-young-children-in-2015-a-systematic-review-and-modelling-study
#14
Ting Shi, David A McAllister, Katherine L O'Brien, Eric A F Simoes, Shabir A Madhi, Bradford D Gessner, Fernando P Polack, Evelyn Balsells, Sozinho Acacio, Claudia Aguayo, Issifou Alassani, Asad Ali, Martin Antonio, Shally Awasthi, Juliet O Awori, Eduardo Azziz-Baumgartner, Henry C Baggett, Vicky L Baillie, Angel Balmaseda, Alfredo Barahona, Sudha Basnet, Quique Bassat, Wilma Basualdo, Godfrey Bigogo, Louis Bont, Robert F Breiman, W Abdullah Brooks, Shobha Broor, Nigel Bruce, Dana Bruden, Philippe Buchy, Stuart Campbell, Phyllis Carosone-Link, Mandeep Chadha, James Chipeta, Monidarin Chou, Wilfrido Clara, Cheryl Cohen, Elizabeth de Cuellar, Duc-Anh Dang, Budragchaagiin Dash-Yandag, Maria Deloria-Knoll, Mukesh Dherani, Tekchheng Eap, Bernard E Ebruke, Marcela Echavarria, Carla Cecília de Freitas Lázaro Emediato, Rodrigo A Fasce, Daniel R Feikin, Luzhao Feng, Angela Gentile, Aubree Gordon, Doli Goswami, Sophie Goyet, Michelle Groome, Natasha Halasa, Siddhivinayak Hirve, Nusrat Homaira, Stephen R C Howie, Jorge Jara, Imane Jroundi, Cissy B Kartasasmita, Najwa Khuri-Bulos, Karen L Kotloff, Anand Krishnan, Romina Libster, Olga Lopez, Marilla G Lucero, Florencia Lucion, Socorro P Lupisan, Debora N Marcone, John P McCracken, Mario Mejia, Jennifer C Moisi, Joel M Montgomery, David P Moore, Cinta Moraleda, Jocelyn Moyes, Patrick Munywoki, Kuswandewi Mutyara, Mark P Nicol, D James Nokes, Pagbajabyn Nymadawa, Maria Tereza da Costa Oliveira, Histoshi Oshitani, Nitin Pandey, Gláucia Paranhos-Baccalà, Lia N Phillips, Valentina Sanchez Picot, Mustafizur Rahman, Mala Rakoto-Andrianarivelo, Zeba A Rasmussen, Barbara A Rath, Annick Robinson, Candice Romero, Graciela Russomando, Vahid Salimi, Pongpun Sawatwong, Nienke Scheltema, Brunhilde Schweiger, J Anthony G Scott, Phil Seidenberg, Kunling Shen, Rosalyn Singleton, Viviana Sotomayor, Tor A Strand, Agustinus Sutanto, Mariam Sylla, Milagritos D Tapia, Somsak Thamthitiwat, Elizabeth D Thomas, Rafal Tokarz, Claudia Turner, Marietjie Venter, Sunthareeya Waicharoen, Jianwei Wang, Wanitda Watthanaworawit, Lay-Myint Yoshida, Hongjie Yu, Heather J Zar, Harry Campbell, Harish Nair
BACKGROUND: We have previously estimated that respiratory syncytial virus (RSV) was associated with 22% of all episodes of (severe) acute lower respiratory infection (ALRI) resulting in 55 000 to 199 000 deaths in children younger than 5 years in 2005. In the past 5 years, major research activity on RSV has yielded substantial new data from developing countries. With a considerably expanded dataset from a large international collaboration, we aimed to estimate the global incidence, hospital admission rate, and mortality from RSV-ALRI episodes in young children in 2015...
July 6, 2017: Lancet
https://www.readbyqxmd.com/read/28680946/etiology-seasonality-and-clinical-features-of-viral-respiratory-tract-infections-in-children-hospitalized-with-acute-bronchiolitis-a-single-center-study
#15
Şule Gökçe, Zafer Kurugöl, Güldane Koturoğlu, Candan Çiçek, Aslı Aslan
The purpose of this study was to evaluate the viral frequency, seasonality, and clinical and demographic features of patients hospitalized with acute bronchiolitis. A cross-sectional, descriptive study was performed in 316 infants younger than 2 years of age who were hospitalized for acute viral bronchiolitis. Respiratory tract infection agents were investigated with polymerase chain reaction (PCR). A total of 316 infants were included in this study. Of the 316 infants, at least one respiratory tract pathogen was detected in 75% (237/316)...
2017: Global Pediatric Health
https://www.readbyqxmd.com/read/28667069/role-of-human-metapneumovirus-and-respiratory-syncytial-virus-in-asthma-exacerbations-where-are-we-now
#16
REVIEW
Penny A Rudd, Belinda J Thomas, Ali Zaid, Martin MacDonald, Keiko Kan-O, Michael S Rolph, Anand R Soorneedi, Philip G Bardin, Suresh Mahalingam
Since its discovery in 2001, human metapneumovirus (hMPV) has been identified as an important cause of respiratory tract infection in young children, second only to the closely related respiratory syncytial virus (RSV). Clinical evidence suggests that hMPV is associated with acute exacerbations of asthma in both children and adults, and may play a role in initiating asthma development in children. Animal models have demonstrated that airway hyperresponsiveness (AHR) and inflammation are triggered following hMPV infection, and hMPV is able to persist in vivo by inhibiting innate immune responses and causing aberrant adaptive responses...
July 15, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28653300/defining-the-incidence-and-associated-morbidity-and-mortality-of-severe-respiratory-syncytial-virus-infection-among-children-with-chronic-diseases
#17
REVIEW
Paolo Manzoni, Josep Figueras-Aloy, Eric A F Simões, Paul A Checchia, Brigitte Fauroux, Louis Bont, Bosco Paes, Xavier Carbonell-Estrany
INTRODUCTION: REGAL (RSV Evidence-a Geographical Archive of the Literature) has provided a comprehensive review of the published evidence in the field of respiratory syncytial virus (RSV) in Western countries over the last 20 years. This review covers the risk and burden of RSV infection in children with underlying medical conditions or chronic diseases (excluding prematurity and congenital heart disease). METHODS: A systematic review of publications between January 1, 1995 and December 31, 2015 across PubMed, Embase, The Cochrane Library, and Clinicaltrials...
June 26, 2017: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/28652242/preclinical-characterization-of-the-inhaled-small-molecule-respiratory-syncytial-virus-l-protein-polymerase-inhibitor-pc786
#18
Matthew Coates, Daniel Brookes, Young-In Kim, Heather Allen, Euan A F Fordyce, Elizabeth A Meals, Thomas Colley, Claire-Lise Ciana, Guillaume F Parra, Vladimir Sherbukhin, Jennifer A Stockwell, Jennifer C Thomas, S Fraser Hunt, Lauren Anderson-Dring, Stuart T Onions, Lindsey Cass, Peter J Murray, Kazuhiro Ito, Pete Strong, John P Devincenzo, Garth Rapeport
Although respiratory syncytial virus (RSV) is the most common cause of lower respiratory tract infection in infants and young children, attempts to develop an effective therapy have so far proved unsuccessful. Herein we report the preclinical profiles of PC786, a potent non-nucleoside RSV L-protein polymerase inhibitor, designed for inhalation treatment of RSV infection. PC786 demonstrated a potent and selective anti-viral activity against laboratory adapted or clinical isolates of RSVA (IC50: <0.09 - 0...
June 26, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28651525/sofia-%C3%A2-rsv-prospective-laboratory-evaluation-and-implementation-of-a-rapid-diagnostic-test-in-a-pediatric-emergency-ward
#19
Léa C Tran, Céline Tournus, Julia Dina, Rémy Morello, Jacques Brouard, Astrid Vabret
BACKGROUND: Respiratory syncytial virus (RSV) is responsible for severe respiratory infections and higher costs in medical care. The two aims of this work were to assess the performances of SOFIA(®)RSV tests in "real-life-laboratory" conditions (study 1) and implemented at point-of-care testing in a pediatric emergency department (ED, study 2), during two consecutive winter seasons. METHODS: In study 1, fresh nasopharyngeal swabs from patients of all ages were sampled in 1...
June 26, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28646954/development-of-respiratory-syncytial-virus-rsv-vaccines-for-infants
#20
Hannah E Gerretsen, Charles J Sande
2017 will mark the 60(th) anniversary since the first isolation of RSV in children. In spite of concerted efforts over all these years, the goal of developing an effective vaccine against paediatric RSV disease has remained elusive. One of the main hurdles standing in the way of an effective vaccine is the fact that the age incidence of severe disease peaks within the first 3 months of life, providing limited opportunity for intervention. In addition to this complexity, the spectre of failed historical vaccines, which increased the risk of illness and death upon subsequent natural infection, has substantially increased the safety criteria against which modern vaccines will be assessed...
June 2017: Journal of Infection
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