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https://www.readbyqxmd.com/read/28526018/infection-mediated-asthma-etiology-mechanisms-and-treatment-options-with-focus-on-chlamydia-pneumoniae-and-macrolides
#1
REVIEW
Wilmore C Webley, David L Hahn
Asthma is a chronic respiratory disease characterized by reversible airway obstruction and airway hyperresponsiveness to non-specific bronchoconstriction agonists as the primary underlying pathophysiology. The worldwide incidence of asthma has increased dramatically in the last 40 years. According to World Health Organization (WHO) estimates, over 300 million children and adults worldwide currently suffer from this incurable disease and 255,000 die from the disease each year. It is now well accepted that asthma is a heterogeneous syndrome and many clinical subtypes have been described...
May 19, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28521212/ado-surveillance-for-enterovirus-d68-in-colorado-children-reveals-continued-circulation
#2
Kevin Messacar, Christine C Robinson, Kristin Pretty, Ji Yuan, Samuel R Dominguez
BACKGROUND: The largest, most widespread outbreak of enterovirus D68 respiratory disease occurred from August to December of 2014 in the United States with 1153 confirmed infections in 49 states. The epidemiology of enterovirus D68 following the 2014 outbreak is unknown. OBJECTIVES: This study seeks to describe the epidemiology of enterovirus D68 circulation amongst Colorado children from 2014 to 2016. STUDY DESIGN: This is a prospective observational surveillance study of enterovirus D68 infection amongst children tested for respiratory pathogens from July-October 2014-2016 at Children's Hospital Colorado (CHCO), a quaternary care children's hospital in Aurora, CO...
May 11, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28515298/crimean-congo-hemorrhagic-fever-virus-nucleocapsid-protein-augments-mrna-translation
#3
Subbiah Jeeva, Erdong Cheng, Safder S Ganaie, Mohammad A Mir
Crimean-Congo hemorrhagic fever virus (CCHFV) is a tick-borne nairovirus of the Bunyaviridae family, causing severe illness with high mortality rates in humans. Here we demonstrate that CCHFV nucleocapsid protein (CCHFV-NP) augments mRNA translation. CCHFV-NP binds to the viral mRNA 5' UTR with high affinity. It facilitates the translation of reporter mRNA both in vivo and in vitro with the assistance of viral mRNA 5' UTR. CCHFV-NP equally favors the translation of both capped and uncapped mRNAs, demonstrating the independence of this translation strategy on the 5' cap...
May 17, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28500687/epidemiological-analysis-and-follow-up-of-human-rhinovirus-infection-in-children-with-asthma-exacerbation
#4
Shou-Yan Zheng, Li-Li Wang, Luo Ren, Jian Luo, Wei Liao, En-Mei Liu
To determine the prevalence of human rhinovirus (HRV) infection in children with acute asthma exacerbations, investigation of HRV viral load and severity of asthma exacerbations is also required. Nasopharyngeal aspirates and swabs were collected and assessed for respiratory viruses. HRV-positive samples were sequenced to identify types and determine viral load. Outpatients with asthma exacerbations underwent follow-up evaluations, their swabs were collected and clinical outcomes were recorded at their next clinic visit 4 weeks later...
May 13, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28495415/rhinovirus-from-bench-to-bedside
#5
REVIEW
Kelvin K W To, Cyril C Y Yip, Kwok-Yung Yuen
Rhinovirus has been neglected in the past because it was generally perceived as a respiratory virus only capable of causing mild common cold. Contemporary epidemiological studies using molecular assays have shown that rhinovirus is frequently detected in adult and pediatric patients with upper or lower respiratory tract infections. Severe pulmonary and extrapulmonary complications are increasingly recognized. Contrary to popular belief, some rhinoviruses can actually replicate well at 37 °C and infect the lower airway in humans...
May 8, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28494435/impact-of-respiratory-viruses-in-hospital-acquired-pneumonia-in-the-intensive-care-unit-a-single-center-retrospective-study
#6
Paul Loubet, Guillaume Voiriot, Nadhira Houhou-Fidouh, Mathilde Neuville, Lila Bouadma, Francois-Xavier Lescure, Diane Descamps, Jean-François Timsit, Yazdan Yazdanpanah, Benoit Visseaux
BACKGROUND: Data on the frequency and role of respiratory viruses (RVs) in hospital-acquired pneumonia (HAP) are still scarce. OBJECTIVES: We assessed the proportion of RVs and their impact on the outcome of hospital-acquired pneumonia (HAP) in the intensive care unit (ICU). STUDY DESIGN: Cases of HAP were retrospectively selected among patients who underwent screening for RVs by multiplex PCR (mPCR) in the ICU of a French tertiary care hospital from May 2014 to April 2016...
April 22, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28489911/human-%C3%AE-defensin-2-production-upon-viral-and-bacterial-co-infection-is-attenuated-in-copd
#7
Jason W Arnason, James C Murphy, Cora Kooi, Shahina Wiehler, Suzanne L Traves, Christopher Shelfoon, Barbara Maciejewski, Curtis J Dumonceaux, W Shawn Lewenza, David Proud, Richard Leigh
Viral-bacterial co-infections are associated with severe exacerbations of COPD. Epithelial antimicrobial peptides, including human β-defensin-2 (HBD-2), are integral to innate host defenses. In this study, we examined how co-infection of airway epithelial cells with rhinovirus and Pseudomonas aeruginosa modulates HBD-2 expression, and whether these responses are attenuated by cigarette smoke and in epithelial cells obtained by bronchial brushings from smokers with normal lung function or from COPD patients...
2017: PloS One
https://www.readbyqxmd.com/read/28489454/acquisition-and-transmission-of-streptococcus-pneumoniae-is-facilitated-during-rhinovirus-infection-in-families-with-children
#8
Sinikka Karppinen, Johanna Teräsjärvi, Kari Auranen, Linnea Schuez-Havupalo, Lotta Siira, Qiushui He, Matti Waris, Ville Peltola
RATIONALE: Laboratory and clinical evidence suggests synergy between rhinoviruses and Streptococcus pneumoniae in the pathogenesis of respiratory tract infections. However, it is unclear whether rhinoviruses promote pneumococcal acquisition and transmission. OBJECTIVES: To describe the impact of rhinovirus infection on acquisition and transmission of pneumococci within families with children. METHODS: We investigated 29 families with at least two children...
May 10, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28474624/viruses-causing-severe-acute-respiratory-infections-sari-in-children-%C3%A2-5-years-of-age-at-a-tertiary-care-hospital-in-rajasthan-india
#9
Bharti Malhotra, M Anjaneya Swamy, P V Janardhan Reddy, M L Gupta
BACKGROUND & OBJECTIVES: Severe acute respiratory infection (SARI) is one of the leading causes of death among children worldwide. As different respiratory viruses exhibit similar symptoms, simultaneous detection of these viruses in a single reaction mixture can save time and cost. The present study was done in a tertiary care children's hospital for rapid identification of viruses causing SARI among children less than or equal to five years of age using multiplex real-time reverse transcription polymerase chain reaction (RT-PCR) kit...
December 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28472984/rhinovirus-c-targets-ciliated-airway-epithelial-cells
#10
Theodor F Griggs, Yury A Bochkov, Sarmila Basnet, Thomas R Pasic, Rebecca A Brockman-Schneider, Ann C Palmenberg, James E Gern
BACKGROUND: The Rhinovirus C (RV-C), first identified in 2006, produce high symptom burdens in children and asthmatics, however, their primary target host cell in the airways remains unknown. Our primary hypotheses were that RV-C target ciliated airway epithelial cells (AECs), and that cell specificity is determined by restricted and high expression of the only known RV-C cell-entry factor, cadherin related family member 3 (CDHR3). METHODS: RV-C15 (C15) infection in differentiated human bronchial epithelial cell (HBEC) cultures was assessed using immunofluorescent and time-lapse epifluorescent imaging...
May 4, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28471975/thymic-stromal-lymphopoietin-il-33-and-periostin-in-hospitalized-infants-with-viral-bronchiolitis
#11
María Luz García-García, Cristina Calvo, Ana Moreira, José Antonio Cañas, Francisco Pozo, Beatriz Sastre, Sergio Quevedo, Inmaculada Casas, Victoria Del Pozo
Much attention has recently been focused on thymic stromal lymphopoietin (TSLP), IL-33, and periostin in allergic disease, but less is known about their role in viral bronchiolitis.The aim of the study was to investigate whether infants exhibit enhanced nasal airway secretion of TSLP, IL-33, and periostin during natural respiratory viral bronchiolitis compared to healthy controls.In total, 213 infants < 2 years of age, hospitalized with bronchiolitis from October/2013 to April/2016 were enrolled alongside 45 healthy infants...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28471606/upper-respiratory-tract-infection-among-dialysis-patients
#12
Keren Cohen-Hagai, Ilan Rozenberg, Ze'ev Korzets, Tali Zitman-Gal, Yael Einbinder, Sydney Benchetrit
BACKGROUND: Upper respiratory tract infection (URTI) occurs frequently in the general population and is considered a benign self-limited disease. Dialysis patients constitute a high risk population whose morbidity and mortality rate as a result of URTI is unknown. OBJECTIVES: To assess the local incidence, morbidity and mortality of URTI in dialysis patients compared to the general population. METHODS: In this retrospective cohort study we reviewed the charts of all chronic dialysis patients diagnosed with URTI at Meir Medical Center, Kfar Saba, Israel during the 2014-2015 winter season...
September 2016: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28470580/etiology-and-clinical-features-of-viral-bronchiolitis-in-infancy
#13
REVIEW
Andrew Fretzayas, Maria Moustaki
BACKGROUND: Bronchiolitis is a common lower respiratory tract infection in infancy. The aim of this review is to present the clinical profile of viral bronchiolitis, the different culprit viruses and the disease severity in relation to the viral etiology. DATA SOURCES: Bronchiolitis is a common lower respiratory tract infection in infancy. The aim of this review is to present the clinical profile of viral bronchiolitis, the different culprit viruses and the disease severity in relation to the viral etiology...
May 4, 2017: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/28467515/prevalence-of-non-influenza-respiratory-viruses-in-acute-respiratory-infection-cases-in-mexico
#14
Larissa Fernandes-Matano, Irma Eloísa Monroy-Muñoz, Javier Angeles-Martínez, Brenda Sarquiz-Martinez, Iliana Donají Palomec-Nava, Hector Daniel Pardavé-Alejandre, Andrea Santos Coy-Arechavaleta, Clara Esperanza Santacruz-Tinoco, Joaquín González-Ibarra, Cesar Raúl González-Bonilla, José Esteban Muñoz-Medina
BACKGROUND: Acute respiratory infections are the leading cause of morbidity and mortality worldwide. Although a viral aetiological agent is estimated to be involved in up to 80% of cases, the majority of these agents have never been specifically identified. Since 2009, diagnostic and surveillance efforts for influenza virus have been applied worldwide. However, insufficient epidemiological information is available for the many other respiratory viruses that can cause Acute respiratory infections...
2017: PloS One
https://www.readbyqxmd.com/read/28467361/studies-on-trans-resveratrol-carboxymethylated-1-3-1-6-%C3%AE-d-glucan-association-for-aerosol-pharmaceutical-applications
#15
Antonio Francioso, Riccardo Cossi, Sergio Fanelli, Paola Mastromarino, Luciana Mosca
A resveratrol/carboxymethylated glucan (CM-glucan) combination is known to inhibit rhinovirus replication and expression of inflammatory mediators in nasal epithelia. The aim of this study was to develop an aerosol formulation containing an association of the two molecules which could reach the lower respiratory tract. Mass median aerodynamic diameter (MMAD) of a resveratrol/CM-glucan combination was lower than that shown by resveratrol or CM-glucan alone (2.83 versus 3.28 and 2.96 µm, respectively). The resveratrol/CM-glucan association results in the finest and most monodispersed particles in comparison to the two single components...
May 3, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28459542/structure-of-rna-stem-loop-b-from-the-picornavirus-replication-platform
#16
Meghan S Warden, Marco Tonelli, Gabriel Cornilescu, Dong Liu, Lorelei J Hopersberger, Komala Ponniah, Steven M Pascal
The presumptive RNA cloverleaf at the start of the 5'-untranslated region of the picornavirus genome is an essential element in replication. Stem loop B (SLB) of the cloverleaf is a recognition site for the host polyC-binding protein, which initiates a switch from translation to replication. Here we present the solution structure of human rhinovirus isotype 14 SLB using nuclear magnetic resonance spectroscopy. SLB adopts a predominantly A-form helical structure. The stem contains five Watson-Crick base pairs and one wobble base pair and is capped by an eight-nucleotide loop...
May 5, 2017: Biochemistry
https://www.readbyqxmd.com/read/28459437/host-dna-released-by-netosis-promotes-rhinovirus-induced-type-2-allergic-asthma-exacerbation
#17
Marie Toussaint, David J Jackson, Dawid Swieboda, Anabel Guedán, Theodora-Dorita Tsourouktsoglou, Yee Man Ching, Coraline Radermecker, Heidi Makrinioti, Julia Aniscenko, Michael R Edwards, Roberto Solari, Frédéric Farnir, Venizelos Papayannopoulos, Fabrice Bureau, Thomas Marichal, Sebastian L Johnston
Respiratory viral infections represent the most common cause of allergic asthma exacerbations. Amplification of the type-2 immune response is strongly implicated in asthma exacerbation, but how virus infection boosts type-2 responses is poorly understood. We report a significant correlation between the release of host double-stranded DNA (dsDNA) following rhinovirus infection and the exacerbation of type-2 allergic inflammation in humans. In a mouse model of allergic airway hypersensitivity, we show that rhinovirus infection triggers dsDNA release associated with the formation of neutrophil extracellular traps (NETs), known as NETosis...
May 1, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28457597/global-epidemiology-of-non-influenza-rna-respiratory-viruses-data-gaps-and-a-growing-need-for-surveillance
#18
REVIEW
Julian W Tang, Tommy T Lam, Hassan Zaraket, W Ian Lipkin, Steven J Drews, Todd F Hatchette, Jean-Michel Heraud, Marion P Koopmans
Together with influenza, the non-influenza RNA respiratory viruses (NIRVs), which include respiratory syncytial virus, parainfluenza viruses, coronavirus, rhinovirus, and human metapneumovirus, represent a considerable global health burden, as recognised by WHO's Battle against Respiratory Viruses initiative. By contrast with influenza viruses, little is known about the contemporaneous global diversity of these viruses, and the relevance of such for development of pharmaceutical interventions. Although far less advanced than for influenza, antiviral drugs and vaccines are in different stages of development for several of these viruses, but no interventions have been licensed...
April 27, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28452706/respiratory-viral-detection-in-the-paranasal-sinuses-of-patients-with-cystic-fibrosis
#19
Nicholas R Rowan, Eric W Wang, Alyssa Kanaan, Nivedita Sahu, John V Williams, Caleb D Phillips, Stella E Lee
BACKGROUND: Pulmonary colonization with antibiotic-resistant organisms in patients with cystic fibrosis (CF) is often preceded by upper-airway infections. Although there is a well-described relationship between pulmonary respiratory viral infections and overall disease progression of CF, the pathogenicity of respiratory viral infections in the paranasal sinuses of patients with CF remains unknown. With recent advances in respiratory virus detection techniques, this study sought to detect the presence of respiratory viruses in the paranasal sinuses of patients with CF in comparison with healthy controls and to correlate the viral presence with clinical measures of sinonasal disease...
March 1, 2017: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/28435153/human-rhinovirus-induced-inflammatory-responses-are-inhibited-by-phosphatidylserine-containing-liposomes
#20
C A Stokes, R Kaur, M R Edwards, M Mondhe, D Robinson, E C Prestwich, R D Hume, C A Marshall, Y Perrie, V B O'Donnell, J L Harwood, I Sabroe, L C Parker
No abstract text is available yet for this article.
May 2017: Mucosal Immunology
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