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https://www.readbyqxmd.com/read/28747261/enterovirus-d68-infection-in-a-cluster-of-children-with-acute-flaccid-myelitis-buenos-aires-argentina-2016
#1
Victor Ruggieri, Maria Ivana Paz, María Gabriela Peretti, Carlos Rugilo, Rosa Bologna, Cecilia Freire, Silvana Vergel, Andrea Savransky
OBJECTIVE: To report a outbreak of 11 cases of acute asymmetric flaccid myelopathy due to spinal motor neuron injury. MATERIAL AND METHODS: Eleven children, six male, with a mean age of 3 years presented with acute flaccid myelitis. We analyzed clinical features, etiology, neuroradiological images, treatment, and outcome. RESULTS: Nine children had bilateral and asymmetric flaccid myelitis of the upper limbs, 1 had upper limb monoplegia, and 1 presented with hemiparesis...
July 19, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28739424/respiratory-viruses-in-transplant-recipients-more-than-just-a-cold-clinical-syndromes-and-infection-prevention-principles
#2
REVIEW
Salma Abbas, Jillian E Raybould, Sangeeta Sastry, Oveimar de la Cruz
OBJECTIVES: The aim of this review is to provide updated information on the clinical spectrum, treatment options, and infection prevention strategies for respiratory viral infections (RVI) in both solid organ (SOT) and hematopoietic stem cell transplant (HSCT) patients. METHODS: We searched the MEDLINE and Pubmed databases for literature regarding the aforementioned aspects of RVIs, with focus on respiratory syncytial virus, adenovirus, influenza, parainfluenza, human metapneumovirus and rhinovirus...
July 21, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28739285/promising-approaches-for-treatment-and-prevention-of-viral-respiratory-illnesses
#3
Nikolaos G Papadopoulos, Spyridon Megremis, Nikolaos A Kitsioulis, Olympia Vangelatou, Peter West, Paraskevi Xepapadaki
Viral respiratory infections are the most common human ailments, leading to enormous health and economic burden. Hundreds of virus species and subtypes have been associated with these conditions, with influenza viruses (IFV), respiratory syncytial virus (RSV) and the rhinoviruses (RV) being the most frequent and with the highest burden. When considering prevention or treatment of viral respiratory infections, potential targets include the causative pathogens themselves but also the immune response, disease transmission or even just the symptoms...
July 21, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28734844/tlr3-blockade-in-rhinovirus-induced-experimental-asthma-exacerbations-a-randomized-controlled-study
#4
Philip E Silkoff, Susan Flavin, Robert Gordon, Mathew J Loza, Peter J Sterk, Rene Lutter, Zuzana Diamant, Ronald B Turner, Brian J Lipworth, David Proud, Dave Singh, Andreas Eich, Vibeke Backer, James E Gern, Christian Herzmann, Scott A Halperin, Tjeert T Mensinga, Alfred M Del Vecchio, Patrick Branigan, Lani San Mateo, Frédéric Baribaud, Elliot S Barnathan, Sebastian L Johnston
BACKGROUND: Human rhinoviruses (HRV) commonly precipitate asthma exacerbations. TLR3, an innate pattern-recognition receptor, is triggered by HRV driving inflammation that may worsen asthma. OBJECTIVE: To evaluate an inhibitory monoclonal antibody to TLR3, CNTO3157, on experimental HRV-16 inoculation in healthy and asthmatic subjects. METHODS: In this double-blind multicenter randomized parallel-group study in North America and Europe, healthy and mild-moderate stable asthmatic subjects received single or multiple doses of CNTO 3157 or placebo, respectively, and were then inoculated with HRV-16 within 72 hours...
July 19, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28726613/human-metapneumovirus-and-other-respiratory-viral-infections-during-pregnancy-and-birth-nepal
#5
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/28719323/burden-and-seasonality-of-viral-acute-respiratory-tract-infections-among-outpatients-in-southern-sri-lanka
#6
David Shapiro, Champica K Bodinayake, Ajith Nagahawatte, Vasantha Devasiri, Ruvini Kurukulasooriya, Jeremy Hsiang, Bradley Nicholson, Aruna Dharshan De Silva, Truls Østbye, Megan E Reller, Christopher W Woods, L Gayani Tillekeratne
In tropical and subtropical settings, the epidemiology of viral acute respiratory tract infections varies widely between countries. We determined the etiology, seasonality, and clinical presentation of viral acute respiratory tract infections among outpatients in southern Sri Lanka. From March 2013 to January 2015, we enrolled outpatients presenting with influenza-like illness (ILI). Nasal/nasopharyngeal samples were tested in duplicate using antigen-based rapid influenza testing and multiplex polymerase chain reaction (PCR) for respiratory viruses...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28716935/severe-viral-respiratory-infections-in-children-with-ifih1-loss-of-function-mutations
#7
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...
July 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28716387/respiratory-virus-prior-to-hematopoietic-cell-transplantation-is-associated-with-allo-immune-mediated-lung-syndromes
#8
Birgitta Versluys, Marc Bierings, Jean Luc Murk, Tom Wolfs, Caroline Lindemans, Kors Vd Ent, Jaap Jan Boelens
BACKGROUND: Allo-immune mediated lung syndromes (allo-LS) are life-threatening complications after hematopoietic cell transplantation (HCT). Respiratory virus (RV) has been suggested to play a role in the pathogenesis. OBJECTIVE: We studied the relation between RV-DNA/RNA detection in upper/lower airway before HCT and the occurrence of allo-LS. METHODS: We retrospectively analyzed all HCT recipients between 2004 and 2014, in whom Real-Time PCR for RV was done from Nasal-Pharyngeal-Aspirates (NPA) and Broncho-Alveolar- Lavage (BAL) before HCT...
July 14, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28712394/-human-rhinovirus-infection-promotes-mast-cell-apoptosis-and-increases-the-release-of-inflammatory-cytokines
#9
Haiwen Liu, Jingyu Tan, Huiquan Feng, Dianzhu Pan
Objective To investigate the regulation of innate immune response of HMC-1 mast cells to human rhinovirus (HRV) infection. Methods Virus replication in HMC-1 cells was quantified by real-time quantitative PCR (qRT-PCR). Cell viability and apoptosis were assessed by flow cytometry. The levels of tumor necrosis factor α (TNF-α), interferon α (IFN-α), interleukin 6 (IL-6) and IL-8 produced by HMC-1 cells were measured using ELISA. Results After HRV infected HMC-1 cells, the copy numbers of virus RNA and apoptotic cells increased obviously over time, what's more, the release of TNF-α, IFN-α, IL-6 and IL-8 from HMC-1 cells ascended significantly compared with control groups...
July 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28709967/advances-in-asthma-2016-designing-individualized-approaches-to-management
#10
William C Anderson, Andrea Apter, Cullen M Dutmer, Daniel A Searing, Stanley J Szefler
In this years Advances in Asthma review we discuss viral infections in asthma and potential therapeutic agents, the microbiome, novel genetic associations with asthma, air quality and climate effects on asthma, exposures during development and long term sequelae of childhood asthma, patient centered outcome research, and precision medicine. In addition, we discuss application of biomarkers to precision medicine, and new information on asthma medications. New evidence indicates that rhinovirus-triggered asthma exacerbations become more severe as the degree of sensitization to dust mite and mouse increase...
July 11, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28708843/prevalence-of-respiratory-viruses-among-adults-by-season-age-respiratory-tract-region-and-type-of-medical-unit-in-paris-france-from-2011-to-2016
#11
Benoit Visseaux, Charles Burdet, Guillaume Voiriot, François-Xavier Lescure, Taous Chougar, Olivier Brugière, Bruno Crestani, Enrique Casalino, Charlotte Charpentier, Diane Descamps, Jean-François Timsit, Yazdan Yazdanpanah, Nadhira Houhou-Fidouh
BACKGROUND: Multiplex PCR tests have improved our understanding of respiratory viruses' epidemiology by allowing their wide range detection. We describe here the burden of these viruses in hospital settings over a five-year period. METHODS: All respiratory samples from adult patients (>20 years old) tested by multiplex-PCR at the request of physicians, from May 1 2011 to April 30 2016, were included retrospectively. Viral findings are reported by season, patient age group, respiratory tract region (upper or lower) and type of clinical unit (intensive care unit, pneumology unit, lung transplantation unit and other medical units)...
2017: PloS One
https://www.readbyqxmd.com/read/28705625/antiviral-activity-of-gemcitabine-against-human-rhinovirus-in%C3%A2-vitro-and-in%C3%A2-vivo
#12
Jae-Hyoung Song, Seong-Ryeol Kim, Eun-Young Heo, Jae-Young Lee, Dong-Eun Kim, Sungchan Cho, Sun-Young Chang, Byung-Il Yoon, Jeongmin Seong, Hyun-Jeong Ko
Rhinovirus, a major causative agent of the common cold, is associated with exacerbation of asthma and chronic obstructive pulmonary disease. Currently, there is no antiviral treatment or vaccine for human rhinovirus (HRV). Gemcitabine (2',2'-difluorodeoxycytidine, dFdC) is a deoxycytidine analog with antiviral activity against rhinovirus, as well as enterovirus 71, in vitro. However, the antiviral effects of gemcitabine in vivo have not been investigated. In the current study, we assessed whether gemcitabine mediated antiviral effects in the murine HRV infection model...
July 11, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28704567/correction-in-vivo-persistence-of-human-rhinoviruses-in-immunosuppressed-patients
#13
(no author information available yet)
[This corrects the article DOI: 10.1371/journal.pone.0170774.].
2017: PloS One
https://www.readbyqxmd.com/read/28701507/the-innate-cytokines-il-25-il-33-and-tslp-cooperate-in-the-induction-of-type-2-innate-lymphoid-cell-expansion-and-mucous-metaplasia-in-rhinovirus-infected-immature-mice
#14
Mingyuan Han, Charu Rajput, Jun Y Hong, Jing Lei, Joanna L Hinde, Qian Wu, J Kelley Bentley, Marc B Hershenson
Early-life respiratory viral infection is a risk factor for asthma development. Rhinovirus (RV) infection of 6-d-old mice, but not mature mice, causes mucous metaplasia and airway hyperresponsiveness that are associated with the expansion of lung type 2 innate lymphoid cells (ILC2s) and are dependent on IL-13 and the innate cytokine IL-25. However, contributions of the other innate cytokines, IL-33 and thymic stromal lymphopoietin (TSLP), to the observed asthma-like phenotype have not been examined. We reasoned that IL-33 and TSLP expression are also induced by RV infection in immature mice and are required for maximum ILC2 expansion and mucous metaplasia...
July 12, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28701404/enterovirus-3a-facilitates-viral-replication-by-promoting-pi4kb-acbd3-interaction
#15
Xia Xiao, Xiaobo Lei, Zhenzhen Zhang, Yijie Ma, Jianli Qi, Chao Wu, Yan Xiao, Li Li, Bin He, Jianwei Wang
Like other enteroviruses, EV71 relies on phosphatidylinositol-4-kinase IIIβ (PI4KB) for genome RNA replication. However, how PI4KB is recruited to the genome replication sites of EV71 remains elusive. Recently, we reported that a host factor ACBD3 is needed for EV71 replication by interacting with viral 3A protein. Here, we show that ACBD3 is required for the recruitment of PI4KB to RNA replication sites. Overexpression of viral 3A or EV71 infection stimulates the interaction of PI4KB and ACBD3. Consistently, EV71 infection induces the production of phosphatidylinositol-4-phosphate (PI4P)...
July 12, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28696310/antibody-induced-uncoating-of-human-rhinovirus-b14
#16
Yangchao Dong, Yue Liu, Wen Jiang, Thomas J Smith, Zhikai Xu, Michael G Rossmann
Rhinoviruses (RVs) are the major causes of common colds in humans. They have a nonenveloped, icosahedral capsid surrounding a positive-strand RNA genome. Here we report that the antigen-binding (Fab) fragment of a neutralizing antibody (C5) can trigger genome release from RV-B14 to form emptied particles and neutralize virus infection. Using cryo-electron microscopy, structures of the C5 Fab in complex with the full and emptied particles have been determined at 2.3 Å and 3.0 Å resolution, respectively. Each of the 60 Fab molecules binds primarily to a region on viral protein 3 (VP3)...
July 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28689842/asthma-exacerbations-pathogenesis-prevention-and-treatment
#17
Jamee R Castillo, Stephen P Peters, William W Busse
Guideline-based management of asthma focuses on disease severity and choosing the appropriate medical therapy to control symptoms and reduce the risk of exacerbations. However, irrespective of asthma severity and often despite optimal medical therapy, patients may experience acute exacerbations of symptoms and a loss of disease control. Asthma exacerbations are most commonly triggered by viral respiratory infections, particularly with human rhinovirus. Given the importance of these events to asthma morbidity and health care costs, we will review common inciting factors for asthma exacerbations and approaches to prevent and treat these events...
July 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28687214/severe-respiratory-viral-infections-new-evidence-and-changing-paradigms
#18
REVIEW
James M Walter, Richard G Wunderink
Lower respiratory tract infection is a leading cause of death in the United States. Advances in diagnostic testing have improved our ability to detect pathogens. Viral pathogens are important causal pathogens in immunocompetent patients. As the number of elderly adults and those with chronic medical conditions increases, the burden of viral respiratory infections will increase. Clinicians must be familiar with the characteristics of rhinovirus, human adenoviruses, respiratory syncytial virus, and human metapneumovirus...
July 5, 2017: Infectious Disease Clinics of North America
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
#19
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/28677664/allergenic-proteases-cleave-the-chemokine-cx3cl1-directly-from-the-surface-of-airway-epithelium-and-augment-the-effect-of-rhinovirus
#20
M Loxham, D E Smart, N J Bedke, N P Smithers, I Filippi, C Blume, E J Swindle, K Tariq, P H Howarth, S T Holgate, D E Davies
CX3CL1 has been implicated in allergen-induced airway CD4(+) T-lymphocyte recruitment in asthma. As epidemiological evidence supports a viral infection-allergen synergy in asthma exacerbations, we postulated that rhinovirus (RV) infection in the presence of allergen augments epithelial CX3CL1 release. Fully differentiated primary bronchial epithelial cultures were pretreated apically with house dust mite (HDM) extract and infected with rhinovirus-16 (RV16). CX3CL1 was measured by enzyme-linked immunosorbent assay and western blotting, and shedding mechanisms assessed using inhibitors, protease-activated receptor-2 (PAR-2) agonist, and recombinant CX3CL1-expressing HEK293T cells...
July 5, 2017: Mucosal Immunology
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