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Respiratory Syncytial Virus vaccine

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https://www.readbyqxmd.com/read/28722020/a-critical-role-of-gas6-axl-signal-in-allergic-airway-responses-during-rsv-vaccine-enhanced-disease
#1
Takehiko Shibata, Manabu Ato
Respiratory syncytial virus (RSV) is a common virus that causes lower respiratory infections across a wide range of ages. A licensed RSV vaccine is not available because vaccination with formalin-inactivated RSV (FI-RSV) and the subsequent RSV infection cause not only insufficient induction of neutralizing antibodies but also severe allergic airway responses, termed FI-RSV vaccine enhanced disease (FI-RSV VED). However, the underlying mechanism has not been identified, although a Th2-biased immune response is known to be a hallmark of this disease...
July 19, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28719323/burden-and-seasonality-of-viral-acute-respiratory-tract-infections-among-outpatients-in-southern-sri-lanka
#2
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/28714847/modulation-of-the-transcription-factor-nf-%C3%AE%C2%BAb-in-antigen-presenting-cells-by-bovine-respiratory-syncytial-virus-small-hydrophobic-protein
#3
Nicola Pollock, Geraldine Taylor, Fatoumatta Jobe, Efrain Guzman
Bovine respiratory syncytial virus (BRSV) is an important cause of respiratory disease in young cattle and is closely related to human RSV (HRSV), which causes severe respiratory disease in infants and the elderly. The RSV genome encodes a small hydrophobic (SH) protein with viroporin activity. Previous studies have shown that recombinant BRSV lacking the SH gene (rBRSVΔSH) is attenuated in the lungs, but not in the upper respiratory tract, of calves and mucosal vaccination with rBRSVΔSH induced long-lasting protective immunity...
July 17, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28702175/costs-of-hospitalization-with-respiratory-syncytial-virus-illness-among-children-aged-5-years-and-the-financial-impact-on-households-in-bangladesh-2010
#4
Mejbah Uddin Bhuiyan, Stephen P Luby, Nadia Ishrat Alamgir, Nusrat Homaira, Katharine Sturm-Ramirez, Emily S Gurley, Jaynal Abedin, Rashid Uz Zaman, Asm Alamgir, Mahmudur Rahman, Ismael R Ortega-Sanchez, Eduardo Azziz-Baumgartner
BACKGROUND: Respiratory syncytial virus (RSV) is the leading cause of acute respiratory illness in young children and results in significant economic burden. There is no vaccine to prevent RSV illness but a number of vaccines are in development. We conducted this study to estimate the costs of severe RSV illness requiring hospitalization among children <5 years and associated financial impact on households in Bangladesh. Data of this study could be useful for RSV vaccine development and also the value of various preventive strategies, including use of an RSV vaccine in children if one becomes available...
June 2017: Journal of Global Health
https://www.readbyqxmd.com/read/28695368/an-interaction-of-lps-and-rsv-infection-in-augmenting-the-ahr-and-airway-inflammation-in-mice
#5
Na Zhou, Wei Li, Luo Ren, Xiaohong Xie, Enmei Liu
Respiratory syncytial virus (RSV) is the leading cause of acute lower respiratory tract infection (LRTI) in children under 5 years of age, especially infants with severe bronchiolitis. Our preliminary clinical experiments showed that bacterial colonization was commonly observed in children with virus-induced wheezing, particularly in those with recurrent wheezing, suggesting that bacterial colonization with an accompanying viral infection may contribute to disease severity. In most cases, RSV-infected infants were colonized with pathogenic bacteria (mainly Gram-negative bacteria)...
July 10, 2017: Inflammation
https://www.readbyqxmd.com/read/28689664/global-regional-and-national-disease-burden-estimates-of-acute-lower-respiratory-infections-due-to-respiratory-syncytial-virus-in-young-children-in-2015-a-systematic-review-and-modelling-study
#6
Ting Shi, David A McAllister, Katherine L O'Brien, Eric A F Simoes, Shabir A Madhi, Bradford D Gessner, Fernando P Polack, Evelyn Balsells, Sozinho Acacio, Claudia Aguayo, Issifou Alassani, Asad Ali, Martin Antonio, Shally Awasthi, Juliet O Awori, Eduardo Azziz-Baumgartner, Henry C Baggett, Vicky L Baillie, Angel Balmaseda, Alfredo Barahona, Sudha Basnet, Quique Bassat, Wilma Basualdo, Godfrey Bigogo, Louis Bont, Robert F Breiman, W Abdullah Brooks, Shobha Broor, Nigel Bruce, Dana Bruden, Philippe Buchy, Stuart Campbell, Phyllis Carosone-Link, Mandeep Chadha, James Chipeta, Monidarin Chou, Wilfrido Clara, Cheryl Cohen, Elizabeth de Cuellar, Duc-Anh Dang, Budragchaagiin Dash-Yandag, Maria Deloria-Knoll, Mukesh Dherani, Tekchheng Eap, Bernard E Ebruke, Marcela Echavarria, Carla Cecília de Freitas Lázaro Emediato, Rodrigo A Fasce, Daniel R Feikin, Luzhao Feng, Angela Gentile, Aubree Gordon, Doli Goswami, Sophie Goyet, Michelle Groome, Natasha Halasa, Siddhivinayak Hirve, Nusrat Homaira, Stephen R C Howie, Jorge Jara, Imane Jroundi, Cissy B Kartasasmita, Najwa Khuri-Bulos, Karen L Kotloff, Anand Krishnan, Romina Libster, Olga Lopez, Marilla G Lucero, Florencia Lucion, Socorro P Lupisan, Debora N Marcone, John P McCracken, Mario Mejia, Jennifer C Moisi, Joel M Montgomery, David P Moore, Cinta Moraleda, Jocelyn Moyes, Patrick Munywoki, Kuswandewi Mutyara, Mark P Nicol, D James Nokes, Pagbajabyn Nymadawa, Maria Tereza da Costa Oliveira, Histoshi Oshitani, Nitin Pandey, Gláucia Paranhos-Baccalà, Lia N Phillips, Valentina Sanchez Picot, Mustafizur Rahman, Mala Rakoto-Andrianarivelo, Zeba A Rasmussen, Barbara A Rath, Annick Robinson, Candice Romero, Graciela Russomando, Vahid Salimi, Pongpun Sawatwong, Nienke Scheltema, Brunhilde Schweiger, J Anthony G Scott, Phil Seidenberg, Kunling Shen, Rosalyn Singleton, Viviana Sotomayor, Tor A Strand, Agustinus Sutanto, Mariam Sylla, Milagritos D Tapia, Somsak Thamthitiwat, Elizabeth D Thomas, Rafal Tokarz, Claudia Turner, Marietjie Venter, Sunthareeya Waicharoen, Jianwei Wang, Wanitda Watthanaworawit, Lay-Myint Yoshida, Hongjie Yu, Heather J Zar, Harry Campbell, Harish Nair
BACKGROUND: We have previously estimated that respiratory syncytial virus (RSV) was associated with 22% of all episodes of (severe) acute lower respiratory infection (ALRI) resulting in 55 000 to 199 000 deaths in children younger than 5 years in 2005. In the past 5 years, major research activity on RSV has yielded substantial new data from developing countries. With a considerably expanded dataset from a large international collaboration, we aimed to estimate the global incidence, hospital admission rate, and mortality from RSV-ALRI episodes in young children in 2015...
July 6, 2017: Lancet
https://www.readbyqxmd.com/read/28686692/estimating-influenza-and-respiratory-syncytial-virus-associated-mortality-in-western-kenya-using-health-and-demographic-surveillance-system-data-2007-2013
#7
Gideon O Emukule, Peter Spreeuwenberg, Sandra S Chaves, Joshua A Mott, Stefano Tempia, Godfrey Bigogo, Bryan Nyawanda, Amek Nyaguara, Marc-Alain Widdowson, Koos van der Velden, John W Paget
BACKGROUND: Influenza and respiratory syncytial virus (RSV) associated mortality has not been well-established in tropical Africa. METHODS: We used the negative binomial regression method and the rate-difference method (i.e. deaths during low and high influenza/RSV activity months), to estimate excess mortality attributable to influenza and RSV using verbal autopsy data collected through a health and demographic surveillance system in Western Kenya, 2007-2013. Excess mortality rates were calculated for a) all-cause mortality, b) respiratory deaths (including pneumonia), c) HIV-related deaths, and d) pulmonary tuberculosis (TB) related deaths...
2017: PloS One
https://www.readbyqxmd.com/read/28679495/dose-selection-for-an-adjuvanted-respiratory-syncytial-virus-f-protein-vaccine-for-older-adults-based-on-humoral-and-cellular-immune-responses
#8
Judith Falloon, Keipp Talbot, Craig Curtis, John Ervin, Diane Krieger, Filip Dubovsky, Therese Takas, Jing Yu, Li Yu, Stacie L Lambert, Tonya Villafana, Mark T Esser
This is the second phase 1 study of a respiratory syncytial virus (RSV) vaccine containing RSV fusion protein (sF) adjuvanted with glucopyranosyl lipid A in 2% stable emulsion (GLA-SE). In this randomized, double-blind study (NCT02289820, clinicaltrials.gov), 261 subjects aged ≥60 years received inactivated influenza vaccine (IIV) or a vaccine containing 120 μg sF with escalating doses of GLA (1, 2.5, or 5 μg) in SE or a vaccine containing 80 μg sF with 2.5 μg GLA in SE. Subjects receiving 120 μg sF with 2...
July 5, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28646954/development-of-respiratory-syncytial-virus-rsv-vaccines-for-infants
#9
Hannah E Gerretsen, Charles J Sande
2017 will mark the 60(th) anniversary since the first isolation of RSV in children. In spite of concerted efforts over all these years, the goal of developing an effective vaccine against paediatric RSV disease has remained elusive. One of the main hurdles standing in the way of an effective vaccine is the fact that the age incidence of severe disease peaks within the first 3 months of life, providing limited opportunity for intervention. In addition to this complexity, the spectre of failed historical vaccines, which increased the risk of illness and death upon subsequent natural infection, has substantially increased the safety criteria against which modern vaccines will be assessed...
June 2017: Journal of Infection
https://www.readbyqxmd.com/read/28624306/preclinical-assessment-of-safety-of-maternal-vaccination-against-respiratory-syncytial-virus-rsv-in-cotton-rats
#10
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...
July 13, 2017: Vaccine
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 y. 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/28604155/the-importance-of-rsv-f-protein-conformation-in-vlps-in-stimulation-of-neutralizing-antibody-titers-in-mice-previously-infected-with-rsv
#13
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 2 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 5. 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/28598702/a-safe-and-efficient-bcg-vectored-vaccine-to-prevent-the-disease-caused-by-the-human-respiratory-syncytial-virus
#14
Emma Rey-Jurado, Jorge Soto, Nicolás Gálvez, Alexis M Kalergis
The human Respiratory Syncytial Virus (hRSV) causes lower respiratory tract infections including pneumonia and bronchiolitis. Such infections also cause a large number of hospitalizations and affects mainly newborns, young children and the elderly worldwide. Symptoms associated with hRSV infection are due to an exacerbated immune response characterized by low levels of IFN-γ, recruitment of neutrophils and eosinophils to the site of infection and lung damage. Although hRSV is a major health problem, no vaccines are currently available...
June 9, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28579304/modelled-seasonal-influenza-mortality-shows-marked-differences-in-risk-by-age-sex-ethnicity-and-socioeconomic-position-in-new-zealand
#15
Trang Q T Khieu, Nevil Pierse, Lucy Frances Telfar-Barnard, Jane Zhang, Q Sue Huang, Michael G Baker
OBJECTIVES: Influenza is responsible for a large number of deaths which can only be estimated using modelling methods. Such methods have rarely been applied to describe the major socio-demographic characteristics of this disease burden. METHODS: We used quasi Poisson regression models with weekly counts of deaths and isolates of influenza A, B and respiratory syncytial virus for the period 1994 to 2008. RESULTS: The estimated average mortality rate was 13...
June 1, 2017: Journal of Infection
https://www.readbyqxmd.com/read/28579233/a-phase-2-randomized-observer-blind-placebo-controlled-dose-ranging-trial-of-aluminum-adjuvanted-respiratory-syncytial-virus-f-particle-vaccine-formulations-in-healthy-women-of-childbearing-age
#16
Allison August, Gregory M Glenn, Eloi Kpamegan, Somia P Hickman, Dewal Jani, Hanxin Lu, D Nigel Thomas, Judy Wen, Pedro A Piedra, Louis F Fries
OBJECTIVE: Respiratory syncytial virus (RSV) causes significant morbidity and mortality in infants. We are developing an RSV fusion (F) protein nanoparticle vaccine for immunization of third trimester pregnant women to passively protect infants through transfer of RSV-specific maternal antibodies. The present trial was performed to assess the immunogenicity and safety of several formulations of RSV F vaccine in 1-dose or 2-dose schedules. METHODS: Placebo, or vaccine with 60μg or 120μg RSV F protein and 0...
June 27, 2017: Vaccine
https://www.readbyqxmd.com/read/28576489/mitochondrial-protein-p32-hapb1-gc1qr-c1qbp-is-required-for-efficient-respiratory-syncytial-virus-production
#17
MengJie Hu, Hong-Mei Li, Marie A Bogoyevitch, David A Jans
Respiratory syncytial virus (RSV) is a major cause of respiratory infections in infants and the elderly, leading to more deaths than influenza each year, but there is no antiviral or efficacious vaccine currently available. Here we examine the role in infection of the host mitochondrial protein p32 (HABP/gC1qR/C1qbp) for the first time. RSV replication as well as infectious virus production was significantly reduced by p32 siRNA knockdown, consistent with an important role for p32 in RSV infection. p32 showed distinct mitochondrial localization throughout RSV infection, but immunostaining and high resolution confocal imaging for p32 as well as MitoTracker Red and cytochrome c, revealed clear changes in mitochondrial organization in RSV infection, with perinuclear mitochondrial compaction and asymmetric distribution at 8 and 18 h post-infection, respectively...
May 30, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28574729/respiratory-syncytial-virus-prospects-for-new-and-emerging-therapeutics
#18
Patricia A Jorquera, Ralph A Tripp
Respiratory syncytial virus (RSV) is the major cause of lower respiratory tract infections (LRTI) in infants, the elderly, and the immunocompromised. Although the development of a RSV vaccine has been a priority for >50 years, there is still no vaccine available. Treatment of RSV LRTI has remained mostly supportive, i.e. hydration and oxygenation. Palivizumab and ribavirin are the only options currently available for prevention and treatment of RSV infection, but evidence suggests that they are not fully effective...
August 2017: Expert Review of Respiratory Medicine
https://www.readbyqxmd.com/read/28561831/a-dynamic-cell-entry-pathway-of-respiratory-syncytial-virus-revealed-by-tracking-the-quantum-dot-labeled-single-virus
#19
Lin Ling Zheng, Chun Mei Li, Shu Jun Zhen, Yuan Fang Li, Cheng Zhi Huang
Studying the cell entry pathway at the single-particle level can provide detailed and quantitative information for the dynamic events involved in virus entry. Indeed, the viral entry dynamics cannot be monitored by static staining methods used in cell biology, and thus virus dynamic tracking could be useful in the development of effective antiviral strategies. Therefore, the aim of this work was to use a quantum dot-based single-particle tracking approach to monitor the cell entry behavior of the respiratory syncytial virus (RSV) in living cells...
May 31, 2017: Nanoscale
https://www.readbyqxmd.com/read/28558308/age-predicts-cytokine-kinetics-and-innate-immune-cell-activation-following-intranasal-delivery-of-ifn%C3%AE-and-gm-csf-in-a-mouse-model-of-rsv-infection
#20
Katherine M Eichinger, Erin Resetar, Jacob Orend, Kacey Anderson, Kerry M Empey
Respiratory syncytial virus (RSV) is the leading cause of lower respiratory tract infections in young children and is further associated with increased healthcare utilization and cost of care in the first years of life. Severe RSV disease during infancy has also been linked to the later development of allergic asthma, yet there remains no licensed RSV vaccine or effective treatment. Pre-clinical and clinical studies have shown that disease severity and development of allergic asthma are associated with differences in cytokine production...
May 27, 2017: Cytokine
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