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https://www.readbyqxmd.com/read/28636980/a-multiplex-liquid-chip-assay-based-on-luminex-xmap-technology-for-simultaneous-detection-of-six-common-respiratory-viruses
#1
Yong Yan, Jian-Yong Luo, Yin Chen, Heng-Hui Wang, Guo-Ying Zhu, Pei-Yan He, Jin-Lei Guo, Yong-Liang Lei, Zhong-Wen Chen
We utilized one-step multiplex reverse transcription-PCR (RT-PCR) and Luminex xMAP technology to develop a respiratory multiplex liquid-chip assay (rMLA) for simultaneous detection of 6 common respiratory viruses, including influenza virus type A (FluA) and type B (FluB), para-influenza virus type 3 (PIV-3), respiratory syncytial virus (RSV), human metapneumovirus (MPV) and a threatening virus to China, Middle East Respiratory Syndrome coronavirus (MERS-CoV). Performance of rMLA was evaluated by comparing with real-time RT-PCR...
June 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28633906/respiratory-syncytial-virus-rsv-in-adult-emergency-department-patients-do-emergency-providers-consider-rsv-as-an-admission-diagnosis-a-retrospective-observational-study-carried-out-at-massachusetts-general-hospital-boston-ma
#2
William Binder, Jill Thorsen, Pierre Borczuk
BACKGROUND: Respiratory Syncytial Virus (RSV) has been recognized for over half a century as a cause of morbidity in infants and children. Over the past 20years, data has emerged linking RSV as a cause of illness in adults resulting in 177,000 annual hospitalizations and up to 14,000 deaths among older adults. OBJECTIVE: Characterize clinical variables in a cohort of adult RSV patients. We hypothesize that emergency physicians do not routinely consider RSV in the differential diagnosis (DDx) of influenza like illness...
June 11, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28629815/resveratrol-suppresses-pulmonary-tumor-metastasis-by-inhibiting-platelet-mediated-angiogenic-responses
#3
Liwei He, Fangtian Fan, Xianbang Hou, Cuixiang Gao, Li Meng, Shu Meng, Shiwen Huang, Hongyan Wu
BACKGROUND: To explore the impact of Resveratrol (RSV) on the angiogenic potential of activated platelets and to elucidate the underlying mechanism. METHODS: Vascular endothelial growth factor concentrations were measured by enzyme-linked immunosorbent assay. Capillary tube formation assay was used to examine the impact of RSV on the angiogenic potential of activated platelets. The levels of cyclic adenosine monophosphate and cyclic guanosine monophosphate (cGMP) in the supernatant were evaluated using corresponding enzyme-linked immunosorbent assay kits...
May 10, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28624306/preclinical-assessment-of-safety-of-maternal-vaccination-against-respiratory-syncytial-virus-rsv-in-cotton-rats
#4
Jorge C G Blanco, Lioubov M Pletneva, Raymonde O Otoa, Mira C Patel, Stefanie N Vogel, Marina S Boukhvalova
Maternal immunization directed to control RSV infection in newborns and infants is an appealing vaccination strategy currently under development. In this work we have modeled maternal vaccination against RSV in cotton rats (CR) to answer two fundamental questions on maternal vaccine safety. We tested (i), whether a known, unsafe RSV vaccine (i.e., FI-RSV Lot 100 vaccine) induces vaccine enhanced disease in the presence of passively transferred, RSV maternal immunity, and (ii) whether the same FI-RSV vaccine could induce vaccine enhanced disease in CR litters when used to immunize their RSV-primed mothers...
June 14, 2017: Vaccine
https://www.readbyqxmd.com/read/28624201/broad-spectrum-inhibition-of-respiratory-virus-infection-by-microrna-mimics-targeting-p38-mapk-signaling
#5
Jana L McCaskill, Sarah Ressel, Andreas Alber, Jane Redford, Ultan F Power, Jürgen Schwarze, Bernadette M Dutia, Amy H Buck
The majority of antiviral therapeutics target conserved viral proteins, however, this approach confers selective pressure on the virus and increases the probability of antiviral drug resistance. An alternative therapeutic strategy is to target the host-encoded factors that are required for virus infection, thus minimizing the opportunity for viral mutations that escape drug activity. MicroRNAs (miRNAs) are small noncoding RNAs that play diverse roles in normal and disease biology, and they generally operate through the post-transcriptional regulation of mRNA targets...
June 16, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28615993/resveratrol-protects-against-icv-collagenase-induced-neurobehavioral-and-biochemical-deficits
#6
Navdeep Singh, Yashika Bansal, Ranjana Bhandari, Lovish Marwaha, Raghunath Singh, Kanwaljit Chopra, Anurag Kuhad
BACKGROUND: Indeed, intracerebral hemorrhage (ICH) account for only 15% of all strokes but it is one of the most devastating subtype of stroke associated with behavioral, cognitive and neurological deficits. The primary cause of neurological deficits in ICH is the hematoma growth, generation of free radicals, inflammatory cytokines and exhausting endogenous anti-oxidant machinery. It has been found that neuroinflammation following ICH leads to exaggeration of hallmarks of ICH. With this background, the study was aimed to evaluate the protective effect of resveratrol (RSV) in intracerebroventricular (ICV) collagenase (COL) induced neurological deficits in rats...
2017: Journal of Inflammation
https://www.readbyqxmd.com/read/28607078/retroviral-host-range-extension-is-coupled-with-env-activating-mutations-resulting-in-receptor-independent-entry
#7
Anna Lounková, Jan Kosla, David Přikryl, Kryštof Štafl, Dana Kučerová, Jan Svoboda
The extent of virus transmission among individuals and species is generally determined by the presence of specific membrane-embedded virus receptors required for virus entry. Interaction of the viral envelope glycoprotein (Env) with a specific cellular receptor is the first and crucial step in determining host specificity. Using a well-established retroviral model-avian Rous sarcoma virus (RSV)-we analyzed changes in an RSV variant that had repeatedly been able to infect rodents. By envelope gene (env) sequencing, we identified eight mutations that do not match the already described mutations influencing the host range...
June 12, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28606988/recurrent-rhinovirus-infections-in-a-child-with-inherited-mda5-deficiency
#8
Ian T Lamborn, Huie Jing, Yu Zhang, Scott B Drutman, Jordan K Abbott, Shirin Munir, Sangeeta Bade, Heardley M Murdock, Celia P Santos, Linda G Brock, Evan Masutani, Emmanuel Y Fordjour, Joshua J McElwee, Jason D Hughes, Dave P Nichols, Aziz Belkadi, Andrew J Oler, Corinne S Happel, Helen F Matthews, Laurent Abel, Peter L Collins, Kanta Subbarao, Erwin W Gelfand, Michael J Ciancanelli, Jean-Laurent Casanova, Helen C Su
MDA5 is a cytosolic sensor of double-stranded RNA (ds)RNA including viral byproducts and intermediates. We studied a child with life-threatening, recurrent respiratory tract infections, caused by viruses including human rhinovirus (HRV), influenza virus, and respiratory syncytial virus (RSV). We identified in her a homozygous missense mutation in IFIH1 that encodes MDA5. Mutant MDA5 was expressed but did not recognize the synthetic MDA5 agonist/(ds)RNA mimic polyinosinic-polycytidylic acid. When overexpressed, mutant MDA5 failed to drive luciferase activity from the IFNB1 promoter or promoters containing ISRE or NF-κB sequence motifs...
June 12, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28606804/a-human-challenge-model-for-respiratory-syncytial-virus-kinetics-the-pharmacological-effect-of-a-novel-fusion-inhibitor-and-the-modeling-of-symptoms-scores
#9
Julia Korell, Bruce Green, John DeVincenzo, Dymphy Huntjens
Respiratory syncytial virus (RSV) causes acute lower respiratory tract infections, and is a major cause of hospital admissions and death in young children. Limited treatments currently exist that can prevent or minimise exacerbation of the disease. The aims of this work were: 1) to develop a population pharmacodynamic model to describe RSV kinetics (RSVK) in nasal lavage, 2) evaluate the impact of an investigational fusion inhibitor, JNJ-53718678, on RSVK, and 3) determine the relationship between RSVK and symptoms scores...
June 9, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28606236/-expression-of-interferon-%C3%AE-1-in-respiratory-epithelial-cells-of-children-with-rsv-infection-and-its-relationship-with-rsv-load
#10
Mei-Ting Tao, Ya-Ping Xie, Shu-Ping Liu, Hao-Feng Chen, Han Huang, Min Chen, Li-Li Zhong
OBJECTIVE: To investigate the expression of IFN-λ1 in respiratory epithelial cells of children with respiratory syncytial virus (RSV) infection and its relationship with RSV load. METHODS: The nasopharyngeal swabs were collected from the children who were hospitalized with respiratory tract infection from June 2015 to June 2016. A direct immunofluorescence assay was used to detect the antigens of seven common respiratory viruses (including RSV) in the nasopharyngeal swabs...
June 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28605562/microorganisms-associated-with-pneumonia-in-children-5-years-of-age-in-developing-and-emerging-countries-the-gabriel-pneumonia-multicenter-prospective-case-control-study
#11
Thomas Bénet, Valentina Sánchez Picot, Mélina Messaoudi, Monidarin Chou, Tekchheng Eap, Jianwei Wang, Kunling Shen, Jean-William Pape, Vanessa Rouzier, Shally Awasthi, Nitin Pandey, Ashish Bavdekar, Sonali Sanghavi, Annick Robinson, Mala Rakoto-Andrianarivelo, Maryam Sylla, Souleymane Diallo, Pagbajabyn Nymadawa, Nymadawaagiin Naranbat, Graciela Russomando, Wilma Basualdo, Florence Komurian-Pradel, Hubert Endtz, Philippe Vanhems, Gláucia Paranhos-Baccalà
Background.: Pneumonia, the leading infectious cause of child mortality globally, mainly afflicts developing countries. This prospective observational study aimed to assess the microorganisms associated with pneumonia in children aged <5 years in developing and emerging countries. Methods.: A multicenter, case-control study by the GABRIEL (Global Approach to Biological Research, Infectious diseases and Epidemics in Low-income countries) network was conducted between 2010 and 2014 in Cambodia, China, Haiti, India (2 sites), Madagascar, Mali, Mongolia, and Paraguay...
June 12, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28605249/product-review-on-the-monoclonal-antibody-palivizumab-for-prevention-of-respiratory-syncytial-virus-infection
#12
Bernhard Resch
Respiratory syncytial virus (RSV) accounts for about 20% of all respiratory infections in children below the age of 5 years. It is associated with up to 63% of all acute respiratory infections and up to 81% of all viral lower respiratory tract infections causing hospitalization in infants and young children. RSV leads to seasonal epidemics between November and April in the northern hemisphere. Most severe infections (RSV accounts for 50 to 80% of all cause bronchiolitis) affect infants younger than 6 months of age and high-risk infants including those born preterm with or without bronchopulmonary dysplasia and those with hemodynamically significant congenital heart disease up to an age of 24 months...
June 12, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28604563/risk-factors-for-rsv-hospitalization-in-healthy-preterm-infants-a-meta-analysis
#13
Shaun Abeysinghe, Andrea V Margulis, Josephine Mauskopf, Claire Ainsworth
No abstract text is available yet for this article.
July 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28604155/the-importance-of-rsv-f-protein-conformation-in-vlps-in-stimulation-of-neutralizing-antibody-titers-in-mice-previously-infected-with-rsv
#14
Lori M Cullen, Madelyn R Schmidt, Trudy G Morrison
Respiratory syncytial virus (RSV) is a significant respiratory pathogen but no vaccine is available. RSV infections present two major, unique problems. First, humans can experience repeated infections caused by the same virus sero-group indicating that protective memory responses to RSV infection are defective. Second, most people have been infected with RSV by age five. Immune responses to these infections, while poorly protective, could impact the effectiveness of a vaccine. The goal of this study was to assess the generation of protective immune responses in mice previously infected with RSV by virus-like particle (VLP) vaccine candidates containing a stabilized pre-fusion form of the RSV F protein or a stabilized post-fusion F protein...
June 12, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28601216/usefulness-of-ct-value-in-acute-respiratory-infections-caused-by-respiratory-syncytial-virus-a-and-b-and-influenza-virus-a-h1n1-pdm09-a-h3n2-and-b
#15
Jordi Reina, Carmen Morales, María Busquets, Cristina Norte
INTRODUCTION: Acute respiratory infections of viral cause are very frequent entities. The difficulty in evaluating the detection of a virus in these entities could be solved by determining the viral load. METHODS: A prospective study on the mean Ct value (cycle threshold value) detected against RSV-A, RSV-B and influenza A (H1N1)pdm09, A (H3N2) and B viruses in patients of different origin and age was performed. Detection was performed using a commercial molecular amplification (RT-PCR) technique...
June 7, 2017: Enfermedades Infecciosas y Microbiología Clínica
https://www.readbyqxmd.com/read/28599122/respiratory-syncytial-virus-infection-compromises-asthma-tolerance-by-recruiting-interleukin-17a-producing-cells-via-ccr6-ccl20-signaling
#16
Tianyun Shi, Yanchao He, Wei Sun, Yi Wu, Ling Li, Zhijun Jie, Xiao Su
Asthma tolerance can be induced by breast-feeding or oral feeding with ovalbumin (OVA). Anergy or deletion of specific T cells and generation of T regulatory cells might contribute to this process. However, whether respiratory syncytial virus (RSV) infection would affect asthma tolerance is not very clear. Here, we first established asthma and oral tolerance mouse models and then analyzed airway hypersensitivity and asthma-related genes in the lung, CCR6-expressing IL-17A(+) cells in the lungs, hilar or mesenteric lymph nodes (HLN or MLN) among control, asthmatic, tolerized, RSV infection, and RSV-infected asthmatic and tolerized groups...
June 6, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28598593/intravenous-palivizumab-in-respiratory-syncytial-virus-infection-after-hematopoietic-stem-cell-transplant-in-children
#17
Juan Pablo Torres, Lorena I Tapia, Paula Catalán, Verónica De la Maza, Asunción Mejías
Respiratory syncytial virus (RSV) infection can cause lower respiratory tract disease and mortality in pediatric hematopoietic stem cell transplant (HSCT) recipients. We report two children who underwent HSCT and developed RSV infection simultaneously at the Bone Marrow Transplant Unit. The treatment with intravenous palivizumab was provided and sequential viral loads were measured in nasopharyngeal (NP) and whole blood samples. To our knowledge, this is the first report where RSV loads were measured in parallel (NP and blood), before and after palivizumab, in correlation with a favorable clinical outcome in both cases...
June 9, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28595925/jinggangmycin-suppressed-reproduction-in-the-small-brown-planthopper-sbph-laodelphax-striatellus-fallen-is-mediated-by-glucose-dehydrogenase-gdh
#18
Jun Ding, You Wu, Lin-Lin You, Bin Xu, Lin-Quan Ge, Guo-Qing Yang, Jin-Cai Wu
The small brown planthopper (SBPH), Laodelphax striatellus (Fallen), is a serious pest insect of rice, wheat, and maize in China. SBPH not only sucks plant sap but also transmits plant disease viruses, causing serious damage. These viruses include rice striped virus disease (RSV disease), black streaked dwarf, and maize rough disease virus. SBPH outbreaks are related to the overuse of pesticides in China. Some pesticides, such as triazophos, stimulate the reproduction of SBPH, but an antibiotic fungicide jinggangmycin (JGM) suppresses its reproduction...
June 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28591230/frequency-of-respiratory-virus-infections-and-next-generation-analysis-of-influenza-a-h1n1pdm09-dynamics-in-the-lower-respiratory-tract-of-patients-admitted-to-the-icu
#19
Antonio Piralla, Francesca Rovida, Alessia Girello, Marta Premoli, Francesco Mojoli, Mirko Belliato, Antonio Braschi, Giorgio Iotti, Elena Pariani, Laura Bubba, Alessandro R Zanetti, Fausto Baldanti
Recent molecular diagnostic methods have significantly improved the diagnosis of viral pneumonia in intensive care units (ICUs). It has been observed that 222G/N changes in the HA gene of H1N1pdm09 are associated with increased lower respiratory tract (LRT) replication and worse clinical outcome. In the present study, the frequency of respiratory viruses was assessed in respiratory samples from 88 patients admitted to 16 ICUs during the 2014-2015 winter-spring season in Lombardy. Sixty-nine out of 88 (78.4%) patients were positive for a respiratory viral infection at admission...
2017: PloS One
https://www.readbyqxmd.com/read/28589385/quantitative-analysis-of-rice-stripe-virus-in-a-transovarial-transmission-cycle-during-the-development-and-reproduction-of-its-vector-laodelphax-striatellus
#20
Mitsuru Okuda, Takuya Shiba, Masahiro Hirae
The amount of Rice stripe virus (RSV) maintained through transovarial transmission was analyzed during the development and reproduction of its vector, Laodelphax striatellus. Reverse transcription quantitative PCR analysis was used to quantify RNA expressed from the RSV coat protein (CP) gene as an estimate of RSV content in nymphs and adults of L. striatellus at various developmental stages. The 18S ribosome RNA gene of L. striatellus was chosen as the reference for calculating RSV CP expression using the comparative Ct method...
June 6, 2017: Virus Genes
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