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https://www.readbyqxmd.com/read/29346336/respiratory-syncytial-virus-seasonality-united-states-2014-2017
#1
Erica Billig Rose, Alexandra Wheatley, Gayle Langley, Susan Gerber, Amber Haynes
Respiratory syncytial virus (RSV) is a leading cause of lower respiratory tract infection in young children worldwide (1-3). In the United States, RSV infection results in >57,000 hospitalizations and 2 million outpatient visits each year among children aged <5 years (3). Recent studies have highlighted the importance of RSV in adults as well as children (4). CDC reported RSV seasonality nationally, by U.S. Department of Health and Human Services (HHS) regions* and for the state of Florida, using a new statistical method that analyzes polymerase chain reaction (PCR) laboratory detections reported to the National Respiratory and Enteric Virus Surveillance System (NREVSS) (https://www...
January 19, 2018: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/29343795/recurrent-wheezing-in-neonatal-pneumonia-is-associated-with-combined-infection-with-respiratory-syncytial-virus-and-staphylococcus-aureus-or-klebsiella-pneumoniae
#2
Qin Zhong, Hui Feng, Qi Lu, Xu Liu, Qi Zhao, Yue Du, Xian-Hong Zhang, Jia-Rong Wang
Both viral and bacterial infections can be associated with wheezing episodes in children; however, information regarding combined infections with both viral and bacterial pathogens in full term neonates is limited. We sought to investigate the effects of viral-bacterial codetection on pneumonia severity and recurrent wheezing. A retrospective cohort study was conducted on neonates admitted to our hospital with pneumonia from 2009 to 2015. Of 606 total cases, 341 were diagnosed with RSV only, and 265 were diagnosed with both RSV and a potential bacterial pathogen...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29342954/a-built-in-cpg-adjuvant-in-rsv-f-protein-dna-vaccine-drives-a-th1-polarized-and-enhanced-protective-immune-response
#3
Yao Ma, Yue-Ying Jiao, Yun-Zhou Yu, Nan Jiang, Ying Hua, Xiu-Juan Zhang, Yuan-Hui Fu, Xiang-Lei Peng, Yan-Peng Zheng, Larry J Anderson, Jin-Sheng He
Human respiratory syncytial virus (RSV) is the most significant cause of acute lower respiratory infection in children. However, there is no licensed vaccine available. Here, we investigated the effect of five or 20 copies of C-Class of CpG ODN (CpG-C) motif incorporated into a plasmid DNA vaccine encoding RSV fusion (F) glycoprotein on the vaccine-induced immune response. The addition of CpG-C motif enhanced serum binding and virus-neutralizing antibody responses in BALB/c mice immunized with the DNA vaccines...
January 15, 2018: Viruses
https://www.readbyqxmd.com/read/29341239/interaction-between-healthcare-professionals-and-parents-is-a-key-determinant-of-parental-distress-during-childhood-hospitalisation-for-respiratory-syncytial-virus-infection-european-rsv-outcomes-study-eros
#4
Xavier Carbonell-Estrany, Alberto Dall'Agnola, John R Fullarton, Barry S Rodgers-Gray, Elisa Girardi, Alessandro Mussa, Natalia Paniagua, Marta Pieretto, Rosa Rodríguez-Fernandez, Paolo Manzoni
AIM: We characterised the distress that parents experienced when their child was hospitalised for respiratory syncytial virus (RSV) infection. METHODS: This survey-based, observational study was conducted during 2014-2015. Meetings were held in Spain and Italy, with 24 parents of RSV hospitalised infants and 11 healthcare professionals experienced in RSV, which identified 110 factors related to parental distress. The resulting questionnaire was completed by another 105 Spanish and Italian parents and 56 healthcare professionals, to assess the impact these factors had on parental distress, using a scale from 0-10 (very unimportant to very important)...
January 17, 2018: Acta Paediatrica
https://www.readbyqxmd.com/read/29338583/endocannabinoid-engagement-of-cb2-regulates-rsv-induced-immunity
#5
Barbara L F Kaplan
No abstract text is available yet for this article.
January 17, 2018: Virulence
https://www.readbyqxmd.com/read/29338045/protection-induced-by-virus-like-particle-vaccine-containing-tandem-repeat-gene-of-respiratory-syncytial-virus-g-protein
#6
Ah-Ra Kim, Dong-Hun Lee, Su-Hwa Lee, Ilaria Rubino, Hyo-Jick Choi, Fu-Shi Quan
Respiratory syncytial virus (RSV) is the leading cause of lower respiratory tract illness in infants, young children and the elderly. However, there is no licensed vaccine available against RSV infection. In this study, we generated virus-like particle (VLP) vaccine and investigated the vaccine efficacy in a mouse model. For VLP vaccines, tandem gene (1-780 bp) for V1 VLPs and tandem repeat gene (repeated 450-780 bp) for V5 VLPs were constructed in pFastBacTM vectors, respectively. Influenza matrix protein 1 (M1) was used as a core protein in the VLPs...
2018: PloS One
https://www.readbyqxmd.com/read/29336703/establishing-correlates-of-protection-for-vaccine-development-considerations-for-the-respiratory-syncytial-virus-vaccine-field
#7
Prasad S Kulkarni, Julia L Hurwitz, Eric A F Simões, Pedro A Piedra
Correlates of protection (CoPs) can play a significant role in vaccine development by assisting the selection of vaccine candidates for clinical trials, supporting clinical trial design and implementation, and simplifying tests of vaccine modifications. Because of this important role in vaccine development, it is essential that CoPs be defined by well-designed immunogenicity and efficacy studies, with attention paid to benefits and limitations. The respiratory syncytial virus (RSV) field is unique in that a great deal of information about the humoral response is available from basic research and clinical studies...
January 16, 2018: Viral Immunology
https://www.readbyqxmd.com/read/29336118/resveratrol-potently-counteracts-quercetin-starvation-induced-autophagy-and-sensitizes-hepg2-cancer-cells-to-apoptosis
#8
Sarah Tomas-Hernández, Jordi Blanco, Cristina Rojas, Joel Roca-Martínez, María José Ojeda-Montes, Raúl Beltrán-Debón, Santiago Garcia-Vallve, Gerard Pujadas, Lluís Arola, Miquel Mulero
SCOPE: Resveratrol (RSV) has been described as a potent antioxidant, anti-steatotic, and antitumor compound, and it has also been identified as a potent autophagy inducer. On the other hand, quercetin (QCT) is a dietary flavonoid with known antitumor, anti-inflammatory and antidiabetic effects. Additionally, QCT increases autophagy. To study the hypothetical synergistic effect of both compounds, we tested the combined effect of QCT and RSV on the autophagy process in HepG2 cells METHODS AND RESULTS: Autophagy was studied by western blotting, real-time RT-PCR, and cellular staining...
January 16, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29333922/effect-of-resveratrol-treatment-on-graft-revascularization-after-islet-transplantation-in-streptozotocin-induced-diabetic-mice
#9
Eun-Mi Lee, Inwon Park, Ye-Jee Lee, Young-Hye You, Ji-Won Kim, Myung-Jun Kim, Yu-Bae Ahn, Pilhan Kim, Seung-Hyun Ko
We evaluated the effect of resveratrol (RSV) on graft survival after islet transplantation (ITx) in diabetic mice. Isolated islets from Balb/c mice (200 IEQ) were transplanted under the kidney capsule of diabetic Balb/c mice. Vehicle or RSV (200 mg/kg/day, orally) was given for 14 days after ITx. Two more control groups [STZ-treated (No-ITx-Control) and STZ+RSV-treated (No-ITx-RSV) mice without ITx] were added. Glucose tolerance tests (GTT) was performed at 14 days after ITx. In vitro, isolated islets pretreated with vehicle or RSV (1 μM) were incubated in a hypoxic chamber (O2 1%, 1hr)...
January 15, 2018: Islets
https://www.readbyqxmd.com/read/29330010/nasopharyngeal-lactobacillus-is-associated-with-childhood-wheezing-illnesses-following-acute-respiratory-syncytial-virus-infection-in-infancy
#10
Christian Rosas-Salazar, Meghan H Shilts, Andrey Tovchigrechko, Seth Schobel, James D Chappell, Emma K Larkin, Tebeb Gebretsadik, Rebecca A Halpin, Karen E Nelson, Martin L Moore, Larry J Anderson, R Stokes Peebles, Suman R Das, Tina V Hartert
BACKGROUND: Early-life acute respiratory infection (ARI) with respiratory syncytial virus (RSV) has been strongly associated with the development of childhood wheezing illnesses, but the pathways underlying this association are poorly understood. OBJECTIVE: To examine the role of the nasopharyngeal microbiome in the development of childhood wheezing illnesses following RSV ARI in infancy. METHODS: We conducted a nested cohort study of 118 previously healthy, term infants with confirmed RSV ARI by RT-PCR...
January 9, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29329282/induction-of-high-mobility-group-box-1-in-vitro-and-in-vivo-by-respiratory-syncytial-virus
#11
Sara Manti, Terri J Harford, Carmelo Salpietro, Fariba Rezaee, Giovanni Piedimonte
BACKGROUND: Despite decades have passed since its discovery, accurate biomarkers of Respiratory syncytial virus (RSV) disease activity and effective therapeutic strategies are still lacking. The high mobility group box type 1 (HMGB1) protein has been proposed as a possible link between RSV and immune system, but only limited information is currently available to support this hypothesis. METHODS: Expression of HMGB1 gene and protein were analyzed by quantitative PCR, ELISA, Western blot, immunocytochemistry, and confocal microscopy in immortalized and primary human bronchial epithelial cells, as well as in rat pup lungs...
January 12, 2018: Pediatric Research
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
#12
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/29327237/regional-age-and-respiratory-secretion-specific-prevalence-of-respiratory-viruses-associated-with-asthma-exacerbation-a-literature-review
#13
REVIEW
Xue-Yan Zheng, Yan-Jun Xu, Wei-Jie Guan, Li-Feng Lin
Despite increased understanding of how viral infection is involved in asthma exacerbations, it is less clear which viruses are involved and to what extent they contribute to asthma exacerbations. Here, we sought to determine the prevalence of different respiratory viruses during asthma exacerbations. Systematic computerized searches of the literature up to June 2017 without language limitation were performed. The primary focus was on the prevalence of respiratory viruses, including AdV (adenovirus), BoV (bocavirus), CoV (coronavirus), CMV (cytomegalovirus), EnV (enterovirus), HSV (herpes simplex virus), IfV (influenza virus), MpV (metapneumovirus), PiV (parainfluenzavirus), RV (rhinovirus) and RSV (respiratory syncytial virus) during asthma exacerbations...
January 11, 2018: Archives of Virology
https://www.readbyqxmd.com/read/29326403/resveratrol-an-nrf2-activator-ameliorates-aging-related-progressive-renal-injury
#14
Eun Nim Kim, Ji Hee Lim, Min Young Kim, Tae Hyun Ban, In-Ae Jang, Hye Eun Yoon, Cheol Whee Park, Yoon Sik Chang, Bum Soon Choi
BACKGROUND: Two important issues in the aging kidney are mitochondrial dysfunction and oxidative stress. An Nrf2 activator, resveratrol, is known to have various effects. Resveratrol may prevent inflammation and oxidative stress by activating Nrf2 and SIRT1 signaling. We examined whether resveratrol could potentially ameliorate the cellular condition, such as renal injury due to cellular oxidative stress and mitochondrial dysfunction caused by aging. METHODS: Male 18-month-old C57BL/6 mice were used...
January 11, 2018: Aging
https://www.readbyqxmd.com/read/29325581/haemophilus-is-overrepresented-in-the-nasopharynx-of-infants-hospitalized-with-rsv-infection-and-associated-with-increased-viral-load-and-enhanced-mucosal-cxcl8-responses
#15
Thomas H A Ederveen, Gerben Ferwerda, Inge M Ahout, Marloes Vissers, Ronald de Groot, Jos Boekhorst, Harro M Timmerman, Martijn A Huynen, Sacha A F T van Hijum, Marien I de Jonge
BACKGROUND: While almost all infants are infected with respiratory syncytial virus (RSV) before the age of 2 years, only a small percentage develops severe disease. Previous studies suggest that the nasopharyngeal microbiome affects disease development. We therefore studied the effect of the nasopharyngeal microbiome on viral load and mucosal cytokine responses, two important factors influencing the pathophysiology of RSV disease. To determine the relation between (i) the microbiome of the upper respiratory tract, (ii) viral load, and (iii) host mucosal inflammation during an RSV infection, nasopharyngeal microbiota profiles of RSV infected infants (< 6 months) with different levels of disease severity and age-matched healthy controls were determined by 16S rRNA marker gene sequencing...
January 11, 2018: Microbiome
https://www.readbyqxmd.com/read/29324996/laboratory-confirmed-respiratory-infections-as-predictors-of-hospital-admission-for-myocardial-infarction-and-stroke-time-series-analysis-of-english-data-for-2004-2015
#16
R M Blackburn, H Zhao, R Pebody, A C Hayward, C Warren-Gash
Background: Acute respiratory infections are associated with increased risk of myocardial infarction (MI) and stroke, however, the role of different organisms is poorly characterised. Methods: We undertook a time-series analysis of English hospital admissions for MI and stroke (age-stratified: 45-64, 65-74, 75+ years), laboratory-confirmed viral respiratory infections and environmental data for 2004-2015. Weekly counts of admissions were modelled using multivariable Poisson regression with weekly counts of respiratory viruses (influenza, parainfluenza, rhinovirus, respiratory syncytial virus (RSV), adenovirus or human meta-pneumovirus (HMPV)) investigated as predictors...
January 6, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29324262/altered-regulatory-cytokine-profiles-in-cases-of-pediatric-respiratory-syncytial-virus-infection
#17
Ruyan Fan, Bo Wen, Wenpei Liu, Jian Zhang, Chan Liu, Chuping Fan, Xiaowang Qu
OBJECTIVES: Regulatory cytokines are associated with viral infection. The objective of this study was to evaluate the relation between serum regulatory cytokines concentrations and respiratory syncytial virus (RSV) disease. METHODS: We enrolled 325 children aged < 24 months who were diagnosed with acute respiratory tract infection. Twenty age-matched healthy children were enrolled as controls. Nasopharyngeal swabs were analyzed to identify virus by reverse transcription polymerase chain reaction, and blood samples were taken to quantify the regulatory cytokine concentrations, including interleukin (IL)-35, IL-10 and transforming growth factor (TGF)-β1 using the Bio-Plex immunoassay or enzyme-linked immunosorbent assay...
January 8, 2018: Cytokine
https://www.readbyqxmd.com/read/29321591/respiratory-syncytial-virus-infection-changes-cargo-composition-of-exosome-released-from-airway-epithelial-cells
#18
Harendra Singh Chahar, Tiziana Corsello, Andrzej S Kudlicki, Narayana Komaravelli, Antonella Casola
Exosomes are microvesicles known to carry biologically active molecules, including RNA, DNA and proteins. Viral infections can induce profound changes in exosome composition, and exosomes have been implicated in viral transmission and pathogenesis. No information is current available regarding exosome composition and function during infection with Respiratory Syncytial Virus (RSV), the most important cause of lower respiratory tract infections in children. In this study, we characterized exosomes released from RSV-infected lung carcinoma-derived A549 cells...
January 10, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29319583/the-infectious-and-non-infectious-etiology-clinical-picture-and-outcome-of-neutropenia-in-immunocompetent-hospitalized-children
#19
Odeya David, Yariv Fruchtman, Ruslan Sergienko, Joseph Kapelushnik, Eugene Leibovitz
BACKGROUND: Acquired neutropenia in immunocompetent children is common and its differential diagnosis ranges from benign causes to life-threatening diseases. We described the etiology, clinical picture and outcome of new onset neutropenia in immunocompetent children assessed in the emergency department and hospitalized at our medical center. PATIENTS AND METHODS: Previously healthy children admitted with neutropenia (absolute neutrophil count [ANC] <1.5 x 10/L) were included...
January 9, 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29314865/il-17-plays-a-role-in-rsv-induced-lung-inflammation-and-emphysema-in-elastase-and-lps-injured-mice
#20
Yohannes A Mebratu, Yohannes Tesfaigzi
Respiratory syncytial virus (RSV) is associated with enhanced progression of chronic obstructive pulmonary disease (COPD) and COPD exacerbations. However, little is known about the role of IL-17 in RSV-induced lung injury. We first investigated the role of RSV infection in enhancing mucous cell hyperplasia and airspace enlargement in the lungs of mice injured with elastase and lipopolysaccharide (E/LPS). Mice injured with E/LPS had an enhanced and prolonged neutrophilic response to RSV that was associated with decreased levels of type I IFN and increased levels of IL-17, IL-23, CXCL-1, GCSF and CXCL-5 and MMP-9...
January 9, 2018: American Journal of Respiratory Cell and Molecular Biology
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