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https://www.readbyqxmd.com/read/28340310/viruses-in-cystic-fibrosis-patients-airways
#1
Lisa Billard, Rozenn Le Berre, Léa Pilorgé, Christopher Payan, Geneviève Héry-Arnaud, Sophie Vallet
Although bacteria have historically been considered to play a major role in cystic fibrosis (CF) airway damage, a strong impact of respiratory viral infections (RVI) is also now recognized. Emerging evidence confirms that respiratory viruses are associated with deterioration of pulmonary function and exacerbation and facilitation of bacterial colonization in CF patients. The aim of this review is to provide an overview of the current knowledge on respiratory viruses in CF airways, to discuss the resulting inflammation and RVI response, to determine how to detect the viruses, and to assess their clinical consequences, prevalence, and interactions with bacteria...
March 24, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28334685/serum-ifn-%C3%AE-induced-protein-10-ip-10-as-a-biomarker-for-severity-of-acute-respiratory-infection-in-healthy-adults
#2
Mary S Hayney, Kelsey M Henriquez, Jodi H Barnet, Tola Ewers, Heather M Champion, Sean Flannery, Bruce Barrett
BACKGROUND: The inflammatory chemokine, interferon-gamma inducible protein of 10kDa (IP-10), is a biomarker associated with several conditions. OBJECTIVES: This study investigated serum concentrations of IP-10 in healthy individuals who developed acute respiratory infection (ARI). The hypothesis is that serum IP-10 concentrations correlate with ARI severity and detection of viral pathogens. STUDY DESIGN: Data come from a randomized controlled trial measuring the effects of mindfulness meditation or exercise on ARI (Clinical Trials ID: NCT01654289)...
March 16, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28328944/respiratory-viruses-in-patients-with-influenza-like-illness-in-senegal-focus-on-human-respiratory-adenoviruses
#3
Mbayame Ndiaye Niang, Ndeye Sokhna Diop, Amary Fall, Davy E Kiori, Fatoumata Diene Sarr, Sara Sy, Déborah Goudiaby, Mamadou Aliou Barry, Malick Fall, Ndongo Dia
BACKGROUND: Human adenoviruses (HAdVs) are highly contagious pathogens that are associated with a wide spectrum of human illnesses involving the respiratory tract. In the present study, we investigate the epidemiologic and viral molecular features of HAdVs circulating in Senegal after 4 consecutive years of sentinel surveillance of influenza-like Illness cases. METHODOLOGY AND RESULTS: From January 2012 to December 2015 swabs were collected from consenting ILI outpatients...
2017: PloS One
https://www.readbyqxmd.com/read/28328242/human-airway-epithelial-cells-direct-significant-rhinovirus-replication-in-monocytic-cells-by-enhancing-icam1-expression
#4
Xu Zhou, Lingxiang Zhu, Rosa Lizarraga, Yin Chen
Human rhinovirus (RV) is the major cause of common cold, and it also plays a significant role in asthma and asthma exacerbation. Airway epithelium is the primary site of RV infection and production. In contrast, monocytic cells (e.g. monocytes and macrophages) are believed to be non-permissive for RV replication. Instead, RV has been shown to modulate inflammatory gene expressions in these cells via a replication-independent mechanism. In the present study, RV16 (a major-group RV) replication was found to be significantly enhanced in monocytes when co-cultivated with airway epithelial cells...
March 22, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28327377/community-acquired-rhinovirus-infection-is-associated-with-changes-in-the-airway-microbiome
#5
Kirsten M Kloepfer, Vishal K Sarsani, Valeriy Poroyko, Wai Ming Lee, Tressa E Pappas, Theresa Kang, Kristine A Grindle, Yury A Bochkov, Sarath Chandra Janga, Robert F Lemanske, James E Gern
In school-age children with asthma, RV infection changes the upper airway microbiome and these changes are associated with symptom severity and viral load.
March 18, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28318885/genetic-association-of-the-functional-cdhr3-genotype-with-early-onset-adult-asthma-in-japanese-populations
#6
Jun Kanazawa, Hironori Masuko, Yohei Yatagai, Tohru Sakamoto, Hideyasu Yamada, Yoshiko Kaneko, Haruna Kitazawa, Hiroaki Iijima, Takashi Naito, Takefumi Saito, Emiko Noguchi, Satoshi Konno, Masaharu Nishimura, Tomomitsu Hirota, Mayumi Tamari, Nobuyuki Hizawa
BACKGROUND: Recent studies have demonstrated that a coding SNP (rs6967330, Cys529→Tyr) in cadherin-related family member 3 (CDHR3), which was previously associated with wheezing illness and hospitalizations in infancy, could support efficient human rhinovirus C (RV-C) entry and replication. Here, we sought to examine the genetic contribution of this variant to the development of adult asthma. METHODS: We performed a candidate gene case-control association study of 2 independent Japanese populations (a total of 3366 adults)...
March 16, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28306724/respiratory-dna-viruses-are-undetectable-in-nasopharyngeal-secretions-from-adenotonsillectomized-children
#7
Ronaldo Bragança Martins, Lucas Penna Rocha, Mirela Moreira Prates, Talita Bianca Gagliardi, Balduino Biasoli, Marcelo Junqueira Leite, Guilherme Buzatto, Miguel Angelo Hyppolito, Davi Casale Aragon, Edwin Tamashiro, Fabiana Cardoso Pereira Valera, Eurico Arruda, Wilma Terezinha Anselmo-Lima
Respiratory viruses are frequently detected in association with chronic tonsillar hypertrophy in the absence of symptoms of acute respiratory infection (ARI). The present analysis was done in follow-up to a previous clinical study done by this same group. Nasopharyngeal washes (NPWs) were obtained from 83 of 120 individuals at variable times post adenotonsillectomy, in the absence of ARI symptoms. A look back at virus detection results in NPWs from the same 83 individuals at the time of tonsillectomy revealed that 73...
2017: PloS One
https://www.readbyqxmd.com/read/28301570/human-metapnuemovirus-infections-in-hospitalized-children-and-comparison-with-other-respiratory-viruses-2005-2014-prospective-study
#8
María Luz García-García, Cristina Calvo, Cristina Rey, Beatriz Díaz, Maria Del Mar Molinero, Francisco Pozo, Inmaculada Casas
BACKGROUND: Human metapneumovirus (HMPV) has an important etiological role in acute lower respiratory infections in children under five years. Our objectives were to estimate the relative contribution of HMPV to hospitalization in children with acute respiratory infection, to define the clinical and epidemiological features of HMPV single and multiple infections, and to compare HMPV infections with respiratory syncytial virus (HRSV), rhinovirus (HRV), adenovirus and human bocavirus infections in the same population...
2017: PloS One
https://www.readbyqxmd.com/read/28295964/respiratory-virus-infection-after-allogeneic-hematopoietic-stem-cell-transplant-in-a-tropical-center-predictive-value-of-the-immunodeficiency-scoring-index
#9
Lin Wang, John Allen, Colin Diong, Yeow-Tee Goh, Sathish Gopalakrishnan, Aloysius Ho, William Hwang, Francesca Lim, Lynette Oon, Thuan-Tong Tan, Yeh-Ching Linn, Ban-Hock Tan
BACKGROUND: Respiratory virus infection (RVI) is a prevalent infection in patients after allogeneic hematopoietic stem cell transplant (allo-HSCT) and can result in significant morbidity and mortality. Ability to assess the potential severity of RVI is important in the management of such patients. METHODS: We reviewed the cases of RVI in allo-HSCT recipients and explored the predictive value of the immunodeficiency scoring index (ISI) established for respiratory syncytial virus (RSV) and its applicability for RVI caused by other respiratory viruses...
March 10, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28295597/the-role-of-rhinoviruses-in-community-acquired-pneumonia-is-still-poorly-understood
#10
O Ruuskanen, M Waris
No abstract text is available yet for this article.
February 22, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28283855/the-role-of-human-parainfluenza-virus-infections-in-the-immunopathology-of-the-respiratory-tract
#11
REVIEW
Malgorzata Pawełczyk, Marek Leszek Kowalski
Viral infections are leading causes of both upper and lower airway acute illness in all age groups of healthy persons, and have also been implicated in the acute exacerbations of chronic respiratory disorders like asthma and COPD. Human rhinovirus, respiratory syncytial virus, influenza virus and coronavirus have been considered as the most important respiratory pathogens and relatively little attention has been paid to the role of parainfluenza viruses (hPIVs). Human parainfluenza viruses are single-stranded RNA viruses belonging to the paramyxovirus family that may evoke lower respiratory infections in infants, children and immunocompromised individuals...
March 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28283475/rhinovirus-bacteria-co-exposure-synergistically-induces-ccl20-production-from-human-bronchial-epithelial-cells
#12
Barbara A Maciejewski, Kyla C Jamieson, Jason W Arnason, Cora Kooi, Shahina Wiehler, Suzanne L Traves, Richard Leigh, David Proud
Exacerbations of chronic obstructive pulmonary disease (COPD) are triggered by viral or bacterial pathogens, with human rhinovirus (HRV) and nontypeable Haemophilus influenzae (NTHI) among the most commonly detected pathogens. Patients who suffer from concomitant viral and bacterial infection have more severe exacerbations. The airway epithelial cell is the initial site of viral and bacterial interactions, and CCL20 is an epithelial chemokine that attracts immature dendritic cells to the airways, and can act as an antimicrobial...
March 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28280379/amylmetacresol-2-4-dichlorobenzyl-alcohol-hexylresorcinol-or-carrageenan-lozenges-as-active-treatments-for-sore-throat
#13
Martina Morokutti-Kurz, Christine Graf, Eva Prieschl-Grassauer
Up to 80% of sore throats are caused by viruses. Several over the counter products are available which provide symptomatic, not causal relief. For such lozenges, containing the antiseptics and local anesthetics amylmetacresol (AMC) and 2,4-dichlorobenzyl alcohol (DCBA) or hexylresorcinol (HR), recently an additional virucidal effect was published. Therefore, we tested a set of Strepsils(®) lozenges, containing either HR (Max [#2]) or AMC/DCBA (Original [#3], Extra Strong [#4], Warm [#5], Orange and Vitamin C [#6], Sugar free Lemon [#7], Children/Strawberry [#8] and Soothing Honey and Lemon [#9]) for their antiviral efficiency against representatives of respiratory viruses known to cause sore throat: human rhinovirus (HRV) 1a, HRV8, influenza virus A H1N1n, Coxsackievirus A10, and human coronavirus (hCoV) OC43...
2017: International Journal of General Medicine
https://www.readbyqxmd.com/read/28277820/influenza-and-other-respiratory-viruses-standardizing-disease-severity-in-surveillance-and-clinical-trials
#14
Barbara Rath, Tim Conrad, Puja Myles, Maren Alchikh, Xiaolin Ma, Christian Hoppe, Franziska Tief, Xi Chen, Patrick Obermeier, Bron Kisler, Brunhilde Schweiger
Influenza-Like Illness is a leading cause of hospitalization in children. Disease burden due to influenza and other respiratory viral infections is reported on a population level, but clinical scores measuring individual changes in disease severity are urgently needed. Areas covered: We present a composite clinical score allowing individual patient data analyses of disease severity based on systematic literature review and WHO-criteria for uncomplicated and complicated disease. The 22-item ViVI Disease Severity Score showed a normal distribution in a pediatric cohort of 6073 children aged 0-18 years (mean age 3...
February 15, 2017: Expert Review of Anti-infective Therapy
https://www.readbyqxmd.com/read/28270165/clinical-and-epidemiological-profiles-including-meteorological-factors-of-low-respiratory-tract-infection-due-to-human-rhinovirus-in-hospitalized-children
#15
Yongdong Yan, Li Huang, Meijuan Wang, Yuqing Wang, Wei Ji, Canhong Zhu, Zhengrong Chen
BACKGROUND: Lower respiratory tract infection (LRTI) is a major cause of morbidity and mortality in children. Human rhinovirus (HRV) is confirmed to be associated with pediatric lower respiratory tract infection. Seasonal and meteorological factors may play a key role in the epidemiology of HRV. The purposes of this study were to investigate the frequency, seasonal distribution, and clinical characteristics of hospitalized children with LRTI caused by HRVs. In addition, associations between incidence of HRVs and meteorological factors in a subtropical region of China were discussed...
March 7, 2017: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/28262277/-the-interactions-between-microorganisms-and-the-small-airways-a-paediatric-focus
#16
REVIEW
J de Blic, J Brouard, A Vabret, A Deschildre
The spectrum of respiratory viruses is expanding and emerging diseases have been described regularly over the last fifteen years. The origin of these emerging respiratory viruses may be zoonotic (by crossing species barrier, after changes to RNA viruses such as avian influenza virus type A or coronaviruses), or related to the use of new identification techniques (metapneumovirus, bocavirus). The relationship between bronchiolitis and asthma is now better understood thanks to prospective follow up of birth cohorts...
February 2017: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/28259567/pitfalls-in-interpretation-of-ct-values-of-rt-pcr-in-children-with-acute-respiratory-tract-infections
#17
Jérôme O Wishaupt, Tjeerd van der Ploeg, Leo C Smeets, Ronald de Groot, Florens G A Versteegh, Nico G Hartwig
BACKGROUND: The relation between viral load and disease severity in childhood acute respiratory tract infections (ARI) is not fully understood. OBJECTIVES: To assess the clinical relevance of the relation between viral load, determined by cycle threshold (CT) value of real-time reverse transcription-polymerase chain reaction assays and disease severity in children with single- and multiple viral ARI. STUDY DESIGN: 582 children with ARI were prospectively followed and tested for 15 viruses...
February 24, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28257236/human-rhinovirus-infection-of-epithelial-cells-modulates-airway-smooth-muscle-migration
#18
Sami Shariff, Christopher Shelfoon, Neil S Holden, Suzanne L Traves, Shahina Wiehler, Cora Kooi, David Proud, Richard Leigh
RATIONALE: Airway remodeling, a characteristic feature of asthma, begins in early life. Recurrent human rhinovirus (HRV) infections are a potential inciting stimulus for remodeling. One component of airway remodeling is an increase in airway smooth muscle cell mass with a greater proximity of the airway smooth muscle cells (ASMC) to the airway epithelium. We asked whether human bronchial epithelial cells infected with HRV produced mediators that are chemotactic for ASMC. METHODS: ASMC migration was investigated using the modified Boyden Chamber and the xCELLigence Real-Time Cell Analyzer...
March 3, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28242170/3-phenylalkyl-2h-chromenes-and-chromans-as-novel-rhinovirus-infection-inhibitors
#19
Cinzia Conti, Luca Proietti Monaco, Nicoletta Desideri
Following our studies on structure-activity relationships of anti-rhinovirus chromene and chroman derivatives, we designed and synthesized new series of 3-phenylalkyl-2H-chromenes and -chromans bearing differently sized, aliphatic linker chains between the two cycles. The cytotoxicity and the antiviral activity of the new compounds on human rhinovirus (HRV) serotype 1B and 14 infection were evaluated in HeLa cell cultures. Most of the tested compounds interfered with HRV1B multiplication in the micromolar or submicromolar concentrations while HRV14 was less susceptible...
February 10, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28238698/nasopharyngeal-protein-biomarkers-of-acute-respiratory-virus-infection
#20
Thomas W Burke, Ricardo Henao, Erik Soderblom, Ephraim L Tsalik, J Will Thompson, Micah T McClain, Marshall Nichols, Bradly P Nicholson, Timothy Veldman, Joseph E Lucas, M Arthur Moseley, Ronald B Turner, Robert Lambkin-Williams, Alfred O Hero, Christopher W Woods, Geoffrey S Ginsburg
Infection of respiratory mucosa with viral pathogens triggers complex immunologic events in the affected host. We sought to characterize this response through proteomic analysis of nasopharyngeal lavage in human subjects experimentally challenged with influenza A/H3N2 or human rhinovirus, and to develop targeted assays measuring peptides involved in this host response allowing classification of acute respiratory virus infection. Unbiased proteomic discovery analysis identified 3285 peptides corresponding to 438 unique proteins, and revealed that infection with H3N2 induces significant alterations in protein expression...
February 21, 2017: EBioMedicine
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