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Respiratory syncytial virus

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https://www.readbyqxmd.com/read/27920986/fulminant-ecchymosis-as-the-initial-manifestation-of-antiphospholipid-syndrome-aps-triggered-by-respiratory-syncytial-virus-rsv-infection-a-case-report-and-review-of-the-literature
#1
Jun Makino, Sanjana Koshy, Sonal Bajaj, Young-Gwang Jeong, David C Perlman
We present a unique and informative instance of respiratory syncytial virus (RSV) infection associated with antiphospholipid syndrome (APS), and discuss this case in the context of the literature addressing the immunopathogenesis of APS associated with diverse infections. We describe the case of a 43-year-old man with no significant past medical history who presented with the acute onset of fever, hemoptysis, and extensive bullous, ecchymotic lesions in both lower extremities. Punch biopsy of the lesion demonstrated thrombotic vasculopathy...
2017: IDCases
https://www.readbyqxmd.com/read/27919877/pharmacist-driven-respiratory-syncytial-virus-prophylaxis-stewardship-service-in-a-neonatal-intensive-care-unit
#2
Sara E Rostas, Christopher McPherson
PURPOSE: The development and implementation of a pharmacist-driven respiratory syncytial virus (RSV) prophylaxis stewardship program in a neonatal intensive care unit (NICU) are described. SUMMARY: An RSV prophylaxis stewardship service was created in the NICU at Brigham and Women's Hospital to align with the newly updated 2014 American Academy of Pediatrics (AAP) recommendations for palivizumab. The service comprised two NICU clinical pharmacists with oversight from the NICU medical director and the chair of the NICU infection control committee...
December 15, 2016: American Journal of Health-system Pharmacy: AJHP
https://www.readbyqxmd.com/read/27918420/synthetic-biodegradable-microparticle-and-nanoparticle-vaccines-against-the-respiratory-syncytial-virus
#3
REVIEW
Patricia A Jorquera, Ralph A Tripp
Synthetic biodegradable microparticle and nanoparticle platform technology provides the opportunity to design particles varying in composition, size, shape and surface properties for application in vaccine development. The use of particle vaccine formulations allows improvement of antigen stability and immunogenicity while allowing targeted delivery and slow release. This technology has been design to develop novel vaccines against the respiratory syncytial virus (RSV), the leading cause of lower respiratory tract infection in infants...
December 2, 2016: Vaccines
https://www.readbyqxmd.com/read/27914740/predicting-the-relative-impacts-of-maternal-and-neonatal-respiratory-syncytial-virus-rsv-vaccine-target-product-profiles-a-consensus-modelling-approach
#4
Wirichada Pan-Ngum, Timothy Kinyanjui, Moses Kiti, Sylvia Taylor, Jean-François Toussaint, Sompob Saralamba, Thierry Van Effelterre, D James Nokes, Lisa J White
BACKGROUND: Respiratory syncytial virus (RSV) is the major viral cause of infant and childhood lower respiratory tract disease worldwide. Defining the optimal target product profile (TPP) is complicated due to a wide range of possible vaccine properties, modalities and an incomplete understanding of the mechanism of natural immunity. We report consensus population level impact projections based on two mathematical models applied to a low income setting. METHOD: Two structurally distinct age-specific deterministic compartmental models reflecting uncertainty associated with the natural history of infection and the mechanism by which immunity is acquired and lost were constructed...
November 28, 2016: Vaccine
https://www.readbyqxmd.com/read/27911218/aberrant-t-cell-immunity-triggered-by-human-respiratory-syncytial-virus-and-human-metapneumovirus-infection
#5
Andrea E González, Margarita K Lay, Evelyn L Jara, Janyra A Espinoza, Roberto S Gómez, Jorge Soto, Claudia A Rivera, Katia Abarca, Susan M Bueno, Claudia A Riedel, Alexis M Kalergis
Human Respiratory syncytial virus (hRSV) and human metapneumovirus (hMPV) are the two major etiological viral agents of lower respiratory tract diseases, affecting mainly infants, young children and the elderly. Although the infection of both viruses trigger an antiviral immune response that mediate viral clearance and disease resolution in immunocompetent individuals, the promotion of long-term immunity appears to be deficient and reinfection are common throughout life. A possible explanation for this phenomenon is that hRSV and hMPV, can induce aberrant T cell responses, which leads to exacerbated lung inflammation and poor T and B cell memory immunity...
December 2, 2016: Virulence
https://www.readbyqxmd.com/read/27911143/factors-predicting-life-threatening-infections-with-respiratory-syncytial-virus-in-adult-patients
#6
Se Yoon Park, Taeeun Kim, Young Rock Jang, Min-Chul Kim, Yong Pil Chong, Sang-Oh Lee, Sang-Ho Choi, Yang Soo Kim, Jun Hee Woo, Sung-Han Kim
BACKGROUND: Respiratory syncytial virus (RSV) is a significant cause of acute respiratory illness with a clinical spectrum ranging from self-limiting upper respiratory infection to severe lower respiratory infection in elderly persons as well as young children. However, there are limited data on risk factors for life-threatening infections that could guide the appropriate use of antiviral agents in adult patients with RSV. METHODS: We conducted a retrospective cohort study from October 2013 to September 2015...
December 2, 2016: Infectious Diseases
https://www.readbyqxmd.com/read/27908797/molecular-detection-and-characterization-of-respiratory-syncytial-virus-b-genotypes-circulating-in-pakistani-children
#7
Uzma Bashir, Nadia Nisar, Nayab Mahmood, Muhammad Masroor Alam, Hajra Sadia, Syed Sohail Zahoor Zaidi
Respiratory syncytial virus (RSV) is the major cause of acute lower respiratory tract infections in young children, but very little is known about its epidemiology and circulating genotypes in Pakistan. This study analyzed the epidemiological and molecular characteristics of RSV B genotypes in Pakistani children below 5years with acute respiratory tract infections (ARIs) during three consecutive winter seasons from 2010 to 2013. A total of 1941 samples were analyzed for RSV infection by real time PCR and 24% (472/1941) samples were found positive out of which 22...
November 28, 2016: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/27908639/animal-models-of-respiratory-syncytial-virus-infection
#8
Geraldine Taylor
Human respiratory syncytial virus (hRSV) is a major cause of respiratory disease and hospitalisation of infants, worldwide, and is also responsible for significant morbidity in adults and excess deaths in the elderly. There is no licensed hRSV vaccine or effective therapeutic agent. However, there are a growing number of hRSV vaccine candidates that have been developed targeting different populations at risk of hRSV infection. Animal models of hRSV play an important role in the preclinical testing of hRSV vaccine candidates and although many have shown efficacy in preclinical studies, few have progressed to clinical trials or they have had only limited success...
November 29, 2016: Vaccine
https://www.readbyqxmd.com/read/27905537/unique-nonstructural-proteins-of-pneumonia-virus-of-mice-pvm-promote-degradation-of-interferon-ifn-pathway-components-and-ifn-stimulated-gene-proteins
#9
Jayeeta Dhar, Sailen Barik
Pneumonia Virus of Mice (PVM) is the only virus that shares the Pneumovirus genus of the Paramyxoviridae family with Respiratory Syncytial Virus (RSV). A deadly mouse pathogen, PVM has the potential to serve as a robust animal model of RSV infection, since human RSV does not fully replicate the human pathology in mice. Like RSV, PVM also encodes two nonstructural proteins that have been implicated to suppress the IFN pathway, but surprisingly, they exhibit no sequence similarity with their RSV equivalents. The molecular mechanism of PVM NS function, therefore, remains unknown...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905101/a-review-on-antiviral-activity-of-the-himalayan-medicinal-plants-traditionally-used-to-treat-bronchitis-and-related-symptoms
#10
REVIEW
Rahila Amber, Muhammad Adnan, Akash Tariq, Sakina Mussarat
OBJECTIVES: Bronchitis is a common respiratory tract infection of humans mainly caused by influenza virus, rhinovirus, adenovirus, coronavirus and respiratory syncytial virus. The aim of this review was to gather fragmented literature on ethnomedicinal plants used against bronchitis in the Himalayan region and their in-vitro validation against bronchitis causing viral pathogens. KEY FINDINGS: Present review contains ethnomedicines of total 55 plants from different countries of the Himalayas...
December 1, 2016: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/27903593/respiratory-syncytial-virus-infection-detection-and-new-options-for-prevention-and-treatment
#11
REVIEW
Cameron Griffiths, Steven J Drews, David J Marchant
Respiratory syncytial virus (RSV) infection is a significant cause of hospitalization of children in North America and one of the leading causes of death of infants less than 1 year of age worldwide, second only to malaria. Despite its global impact on human health, there are relatively few therapeutic options available to prevent or treat RSV infection. Paradoxically, there is a very large volume of information that is constantly being refined on RSV replication, the mechanisms of RSV-induced pathology, and community transmission...
January 2017: Clinical Microbiology Reviews
https://www.readbyqxmd.com/read/27903461/clinical-characteristics-and-outcome-of-respiratory-syncytial-virus-infection-among-adults-hospitalized-with-influenza-like-illness-in-france
#12
Paul Loubet, Nezha Lenzi, Martine Valette, Vincent Foulongne, Anne Krivine, Nadhira Houhou, Gisele Lagathu, Sylvie Rogez, Sophie Alain, Xavier Duval, Florence Galtier, Deborah Postil, Pierre Tattevin, Philippe Vanhems, Fabrice Carrat, Bruno Lina, Odile Launay
OBJECTIVES: The aim of this study was to analyze characteristics and outcome of RSV infection in adults hospitalized with influenza-like illness (ILI). METHODS: Patients hospitalized with ILI were included in this prospective, multicenter study carried out in six French hospitals during three consecutive influenza seasons (2012-2015). RSV and other respiratory viruses were detected by multiplex PCR in nasopharyngeal swabs. Risk factors for RSV infection were identified by backward stepwise logistic regression analysis...
November 26, 2016: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/27898687/effects-of-chronologic-age-and-young-child-exposure-on-respiratory-syncytial-virus-disease-among-us-preterm-infants-born-at-32-to-35-weeks-gestation
#13
Eric A F Simões, Evan J Anderson, Xionghua Wu, Christopher S Ambrose
OBJECTIVE: To estimate the incidence of respiratory syncytial virus (RSV) disease as a function of chronologic age and exposure to young children in US preterm infants. METHODS: In the RSV Respiratory Events among Preterm Infants Outcomes and Risk Tracking (REPORT) study, preterm infants born at 32-35 weeks gestational age (wGA) were enrolled from 188 US clinics and followed September-May of 2009-2010 or 2010-2011. Infants with medically-attended acute respiratory illness had nasal/pharyngeal swabs collected for viral testing...
2016: PloS One
https://www.readbyqxmd.com/read/27898422/national-evidence-in-israel-supporting-reevaluation-of-respiratory-syncytial-virus-prophylactic-guidelines
#14
Itai Gross, Yael Siedner-Weintraub, Wiessam Abu Ahmad, Benjamin Bar-Oz, Smadar Eventov-Friedman
BACKGROUND: The American Academy of Pediatrics (AAP) recently narrowed the indications for respiratory syncytial virus (RSV) prophylaxis, while in Israel the guidelines have not changed. OBJECTIVE: To compare the prevalence and severity of RSV infection among preterm infants born earlier than 340/7 weeks of gestation (PI), late preterm infants born at 340/7-366/7 weeks (LPTI), and term infants born after 370/7 weeks of gestation (TI) and to determine whether the results support a change in local policy...
November 30, 2016: Neonatology
https://www.readbyqxmd.com/read/27895172/pulmonary-dendritic-cell-subsets-shape-the-respiratory-syncytial-virus-specific-cd8-t-cell-immunodominance-hierarchy-in-neonates
#15
Allison M W Malloy, Tracy J Ruckwardt, Kaitlyn M Morabito, Annie W Lau-Kilby, Barney S Graham
Young infants are generally more susceptible to viral infections and experience more severe disease than do adults. CD8(+) T cells are important for viral clearance, and although often ineffective in neonates they can be protective when adequately stimulated. Using a murine CB6F1/J hybrid model of respiratory syncytial virus (RSV) infection, we previously demonstrated that the CD8(+) T cell immunodominance hierarchy to two RSV-derived epitopes, K(d)M282-90 and D(b)M187-195, was determined by the age at infection...
November 28, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27894035/an-isothermal-label-free-and-rapid-one-step-rna-amplification-detection-assay-for-diagnosis-of-respiratory-viral-infections
#16
Bonhan Koo, Choong Eun Jin, Tae Yoon Lee, Jeong Hoon Lee, Mi Kyoung Park, Heungsup Sung, Se Yoon Park, Hyun Jung Lee, Sun Mi Kim, Ji Yeun Kim, Sung-Han Kim, Yong Shin
Recently, RNA viral infections caused by respiratory viruses, such as influenza, parainfluenza, respiratory syncytial virus, coronavirus, and Middle East respiratory syndrome-coronavirus (MERS-CoV), and Zika virus, are a major public health threats in the world. Although myriads of diagnostic methods based on RNA amplification have been developed in the last decades, they continue to lack speed, sensitivity, and specificity for clinical use. A rapid and accurate diagnostic method is needed for appropriate control, including isolation and treatment of the patients...
November 23, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27891060/human-metapneumovirus-in-the-preterm-neonate-current-perspectives
#17
Nathalie L Maitre, John V Williams
Premature birth (<37 weeks gestation) occurs in ~11% of all births in the US. These infants are at risk of chronic lung disease and respiratory conditions, including bronchopulmonary dysplasia. Respiratory viruses are important causes of acute respiratory illness (ARI) in preterm infants, leading to rehospitalization, increased health care burden, and long-term morbidity. Human metapneumovirus (HMPV) is a paramyxovirus discovered in 2001 that is related to respiratory syncytial virus. Epidemiologic studies show that HMPV is a leading cause of ARI in children and adults worldwide...
2016: Research and Reports in Neonatology
https://www.readbyqxmd.com/read/27889321/rapid-antigen-detection-test-for-respiratory-syncytial-virus-diagnosis-as-a-diagnostic-tool
#18
Flávio da Silva Mesquita, Danielle Bruna Leal de Oliveira, Daniela Crema, Célia Miranda Nunes Pinez, Thaís Cristina Colmanetti, Luciano Matsumia Thomazelli, Alfredo Elias Gilio, Sandra Elisabeth Vieira, Marina Baquião Martinez, Viviane Fongaro Botosso, Edison Luiz Durigon
OBJECTIVE: The aim of this study was to evaluate the QuickVue(®) RSV Test Kit (QUIDEL Corp, CA, USA) as a screening tool for respiratory syncytial virus in children with acute respiratory disease in comparison with the indirect immunofluorescence assay as gold standard. In Brazil, rapid antigen detection tests for respiratory syncytial virus are not routinely utilized as a diagnostic tool, except for the diagnosis of dengue and influenza. METHODS: The authors retrospectively analyzed 486 nasopharyngeal aspirate samples from children under age 5 with acute respiratory infection, between December 2013 and August 2014, the samples were analyzed by IFI and QuickVue(®) RSV Test kit...
November 24, 2016: Jornal de Pediatria
https://www.readbyqxmd.com/read/27888461/inhibitory-effects-of-bee-venom-and-its-components-against-viruses-in-vitro-and-in-vivo
#19
Md Bashir Uddin, Byeong-Hoon Lee, Chamilani Nikapitiya, Jae-Hoon Kim, Tae-Hwan Kim, Hyun-Cheol Lee, Choul Goo Kim, Jong-Soo Lee, Chul-Joong Kim
Bee venom (BV) from honey bee (Apis Melifera L.) contains at least 18 pharmacologically active components including melittin (MLT), phospholipase A2 (PLA2), and apamin etc. BV is safe for human treatments dose dependently and proven to possess different healing properties including antibacterial and antiparasitidal properties. Nevertheless, antiviral properties of BV have not well investigated. Hence, we identified the potential antiviral properties of BV and its component against a broad panel of viruses. Co-incubation of non-cytotoxic amounts of BV and MLT, the main component of BV, significantly inhibited the replication of enveloped viruses such as Influenza A virus (PR8), Vesicular Stomatitis Virus (VSV), Respiratory Syncytial Virus (RSV), and Herpes Simplex Virus (HSV)...
December 2016: Journal of Microbiology / the Microbiological Society of Korea
https://www.readbyqxmd.com/read/27885562/respiratory-syncytial-virus-and-influenza-are-the-key-viral-pathogens-in-children-2%C3%A2-years-hospitalized-with-bronchiolitis-and-pneumonia-in-islamabad-pakistan
#20
Uzma Bashir, Nadia Nisar, Yasir Arshad, Muhammad Masroor Alam, Asiya Ashraf, Hajra Sadia, Birjees Mazher Kazi, Syed Sohail Zahoor Zaidi
Pneumonia remains a leading cause of morbidity and mortality in developing countries. Comprehensive surveillance data are needed to review the prevention and control strategies. We conducted active surveillance of acute lower respiratory infections among children aged <2 years hospitalized at two hospitals of Islamabad, Pakistan. Viral etiology was determined using real-time PCR on respiratory specimens collected during March 2011-April 2012. The overall mean age was 7.83 ± 5.25 months while no statistical difference between age or sex distribution of patients with positive and negative viral etiology (p > 0...
November 24, 2016: Archives of Virology
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