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Vaccines

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https://www.readbyqxmd.com/read/28925977/equine-pbmc-cytokines-profile-after-in-vitro-%C3%AE-and-%C3%AE-ehv-infection-efficacy-of-a-parapoxvirus-ovis-based-immunomodulator-treatment
#1
Erika S Hue, Eric A Richard, Christine I Fortier, Guillaume D Fortier, Romain Paillot, Rudiger Raue, Stéphane L Pronost
Equine herpesviruses (EHV) infect horses early during life and the persistence of these viruses through establishment of latency represents a real risk. A better understanding of the immune response to EHV infection is necessary to improve our methods of prevention and decrease the risk of transmission. The objectives of this study were to characterise the cytokine gene expression profile of peripheral blood mononuclear cells (PBMC) after in vitro EHV-1, EHV-4, and EHV-2 infection and to determine the efficacy of inactivated Parapoxvirus ovis (iPPVO) against these 3 viruses...
September 19, 2017: Vaccines
https://www.readbyqxmd.com/read/28925970/current-status-of-rift-valley-fever-vaccine-development
#2
REVIEW
Bonto Faburay, Angelle Desiree LaBeaud, D Scott McVey, William C Wilson, Juergen A Richt
Rift Valley Fever (RVF) is a mosquito-borne zoonotic disease that presents a substantial threat to human and public health. It is caused by Rift Valley fever phlebovirus (RVFV), which belongs to the genus Phlebovirus and the family Phenuiviridae within the order Bunyavirales. The wide distribution of competent vectors in non-endemic areas coupled with global climate change poses a significant threat of the transboundary spread of RVFV. In the last decade, an improved understanding of the molecular biology of RVFV has facilitated significant progress in the development of novel vaccines, including DIVA (differentiating infected from vaccinated animals) vaccines...
September 19, 2017: Vaccines
https://www.readbyqxmd.com/read/28925950/targeting-host-cell-surface-nucleolin-for-rsv-therapy-challenges-and-opportunities
#3
Peter Mastrangelo, Michael J Norris, Wenming Duan, Edward G Barrett, Theo J Moraes, Richard G Hegele
Nucleolin (NCL) has been reported as a cellular receptor for the human respiratory syncytial virus (RSV). We studied the effects of re-purposing AS1411, an anti-cancer compound that binds cell surface NCL, as a possible novel strategy for RSV therapy in vitro and in vivo. AS1411 was administered to RSV-infected cultures of non-polarized (HEp-2) and polarized (MDCK) epithelial cells and to virus-infected mice and cotton rats. Results of in vitro experiments showed that AS1411, used in micromolar concentrations, was associated with decreases in the number of virus-positive cells...
September 19, 2017: Vaccines
https://www.readbyqxmd.com/read/28925936/an-atypical-local-vesicular-reaction-to-the-yellow-fever-vaccine
#4
Robert H Wauters, Camellia L Hernandez, Maureen M Petersen
Yellow fever vaccine is a live attenuated viral inoculation indicated for patients traveling to endemic areas. The vaccine is generally well tolerated with minimal adverse effects. Typical side effects include malaise, pain at the injection site, and, albeit rarely, immediate hypersensitivity reactions. We present a case of a rare adverse reaction to yellow fever vaccine in which a patient developed vesicular lesions resulting in bullae and circumferential hyperpigmentation.
September 19, 2017: Vaccines
https://www.readbyqxmd.com/read/28869502/a-review-of-the-safety-and-efficacy-of-vaccines-as-prophylaxis-for-clostridium-difficile-infections
#5
REVIEW
Mackenzie Henderson, Amanda Bragg, Germin Fahim, Monica Shah, Evelyn R Hermes-DeSantis
This review aims to evaluate the literature on the safety and efficacy of novel toxoid vaccines for the prophylaxis of Clostridium difficile infections (CDI) in healthy adults. Literature searches for clinical trials were performed through MEDLINE, ClinicalTrials.gov, and Web of Science using the keywords bacterial vaccines, Clostridium difficile, and vaccine. English-language clinical trials evaluating the efficacy and/or safety of Clostridium difficile toxoid vaccines that were completed and had results posted on ClinicalTrials...
September 2, 2017: Vaccines
https://www.readbyqxmd.com/read/28862649/immune-evasion-strategies-during-chronic-hepatitis-b-and-c-virus-infection
#6
REVIEW
Ana Maria Ortega-Prieto, Marcus Dorner
Both hepatitis B virus (HBV) and hepatitis C virus (HCV) infections are a major global healthcare problem with more than 240 million and 70 million infected, respectively. Both viruses persist within the liver and result in progressive liver disease, resulting in liver fibrosis, cirrhosis and hepatocellular carcinoma. Strikingly, this pathogenesis is largely driven by immune responses, unable to clear an established infection, rather than by the viral pathogens themselves. Even though disease progression is very similar in both infections, HBV and HCV have evolved distinct mechanisms, by which they ensure persistence within the host...
September 1, 2017: Vaccines
https://www.readbyqxmd.com/read/28829373/the-trimendous-role-of-trims-in-virus-host-interactions
#7
REVIEW
Sarah van Tol, Adam Hage, Maria Isabel Giraldo, Preeti Bharaj, Ricardo Rajsbaum
The innate antiviral response is integral in protecting the host against virus infection. Many proteins regulate these signaling pathways including ubiquitin enzymes. The ubiquitin-activating (E1), -conjugating (E2), and -ligating (E3) enzymes work together to link ubiquitin, a small protein, onto other ubiquitin molecules or target proteins to mediate various effector functions. The tripartite motif (TRIM) protein family is a group of E3 ligases implicated in the regulation of a variety of cellular functions including cell cycle progression, autophagy, and innate immunity...
August 22, 2017: Vaccines
https://www.readbyqxmd.com/read/28805672/challenges-in-estimating-vaccine-coverage-in-refugee-and-displaced-populations-results-from-household-surveys-in-jordan-and-lebanon
#8
Timothy Roberton, William Weiss, Shannon Doocy
Ensuring the sustained immunization of displaced persons is a key objective in humanitarian emergencies. Typically, humanitarian actors measure coverage of single vaccines following an immunization campaign; few measure routine coverage of all vaccines. We undertook household surveys of Syrian refugees in Jordan and Lebanon, outside of camps, using a mix of random and respondent-driven sampling, to measure coverage of all vaccinations included in the host country's vaccine schedule. We analyzed the results with a critical eye to data limitations and implications for similar studies...
August 12, 2017: Vaccines
https://www.readbyqxmd.com/read/28792466/distinctive-responses-in-an-in-vitro-human-dendritic-cell-based-system-upon-stimulation-with-different-influenza-vaccine-formulations
#9
Gabriela Tapia-Calle, Maaike Stoel, Jacqueline de Vries-Idema, Anke Huckriede
Vaccine development relies on testing vaccine candidates in animal models. However, results from animals cannot always be translated to humans. Alternative ways to screen vaccine candidates before clinical trials are therefore desirable. Dendritic cells (DCs) are the main orchestrators of the immune system and the link between innate and adaptive responses. Their activation by vaccines is an essential step in vaccine-induced immune responses. We have systematically evaluated the suitability of two different human DC-based systems, namely the DC-cell line MUTZ-3 and primary monocyte-derived DCs (Mo-DCs) to screen immunopotentiating properties of vaccine candidates...
August 9, 2017: Vaccines
https://www.readbyqxmd.com/read/28763018/maternal-immunization-new-perspectives-on-its-application-against-non-infectious-related-diseases-in-newborns
#10
REVIEW
Federica Riccardo, Aline Réal, Claudia Voena, Roberto Chiarle, Federica Cavallo, Giuseppina Barutello
The continuous evolution in preventive medicine has anointed vaccination a versatile, human-health improving tool, which has led to a steady decline in deaths in the developing world. Maternal immunization represents an incisive step forward for the field of vaccination as it provides protection against various life-threatening diseases in pregnant women and their children. A number of studies to improve prevention rates and expand protection against the largest possible number of infections are still in progress...
August 1, 2017: Vaccines
https://www.readbyqxmd.com/read/28749414/adjuvantation-of-pulmonary-administered-influenza-vaccine-with-gpi-0100-primarily-stimulates-antibody-production-and-memory-b-cell-proliferation
#11
Harshad P Patil, José Herrera Rodriguez, Jacqueline de Vries-Idema, Tjarko Meijerhof, Henderik W Frijlink, Wouter L J Hinrichs, Anke Huckriede
Adjuvants are key components in vaccines, they help in reducing the required antigen dose but also modulate the phenotype of the induced immune response. We previously showed that GPI-0100, a saponin-derived adjuvant, enhances antigen-specific mucosal and systemic antibody responses to influenza subunit and whole inactivated influenza virus (WIV) vaccine administered via the pulmonary route. However, the impact of the GPI-0100 dose on immune stimulation and the immune mechanisms stimulated by GPI-0100 along with antigen are poorly understood...
July 27, 2017: Vaccines
https://www.readbyqxmd.com/read/28718786/egg-independent-influenza-vaccines-and-vaccine-candidates
#12
REVIEW
Ilaria Manini, Claudia Maria Trombetta, Giacomo Lazzeri, Teresa Pozzi, Stefania Rossi, Emanuele Montomoli
Vaccination remains the principal way to control seasonal infections and is the most effective method of reducing influenza-associated morbidity and mortality. Since the 1940s, the main method of producing influenza vaccines has been an egg-based production process. However, in the event of a pandemic, this method has a significant limitation, as the time lag from strain isolation to final dose formulation and validation is six months. Indeed, production in eggs is a relatively slow process and production yields are both unpredictable and highly variable from strain to strain...
July 18, 2017: Vaccines
https://www.readbyqxmd.com/read/28714923/heterologous-humoral-response-against-h5n1-h7n3-and-h9n2-avian-influenza-viruses-after-seasonal-vaccination-in-a-european-elderly-population
#13
Ivan Sanz, Silvia Rojo, Sonia Tamames, José María Eiros, Raúl Ortiz de Lejarazu
Avian influenza viruses are currently one of the main threats to human health in the world. Although there are some screening reports of antibodies against these viruses in humans from Western countries, most of these types of studies are conducted in poultry and market workers of Asian populations. The presence of antibodies against avian influenza viruses was evaluated in an elderly European population. An experimental study was conducted, including pre- and post-vaccine serum samples obtained from 174 elderly people vaccinated with seasonal influenza vaccines of 2006-2007, 2008-2009, 2009-2010, and 2010-2011 Northern Hemisphere vaccine campaigns...
July 17, 2017: Vaccines
https://www.readbyqxmd.com/read/28671606/the-central-conserved-region-ccr-of-respiratory-syncytial-virus-rsv-g-protein-modulates-host-mirna-expression-and-alters-the-cellular-response-to-infection
#14
Abhijeet A Bakre, Jennifer L Harcourt, Lia M Haynes, Larry J Anderson, Ralph A Tripp
Respiratory Syncytial Virus (RSV) infects respiratory epithelial cells and deregulates host gene expression by many mechanisms including expression of RSV G protein (RSV G). RSV G protein encodes a central conserved region (CCR) containing a CX3C motif that functions as a fractalkine mimic. Disruption of the CX3C motif (a.a. 182-186) located in the CCR of the G protein has been shown to affect G protein function in vitro and the severity of RSV disease pathogenesis in vivo. We show that infection of polarized Calu3 respiratory cells with recombinant RSV having point mutations in Cys173 and 176 (C173/176S) (rA2-GC12), or Cys186 (C186S) (rA2-GC4) is associated with a decline in the integrity of polarized Calu-3 cultures and decreased virus production...
July 3, 2017: Vaccines
https://www.readbyqxmd.com/read/28574449/reemergence-of-measles-in-the-americas-the-genotype-b3-2011-2012-outbreak-in-ecuador
#15
Nicole K Le, Rahul Mhaskar, Ismael Hoare, Mauricio Espinel, María Fernanda Rivadeneira, Sharad Malavade, Ricardo Izurieta
This study characterizes a measles outbreak which occurred in Ecuador in 2011-2012, analyzing data from 3700 suspected cases of measles reported to Ecuador's Ministry of Public Health. The study population had a large age range and included 333 confirmed cases of measles. The greatest number of cases were found in the <1 year (32.43%, n = 108) and 1-4 year (30.03%, n = 100) age-groups. Compared to Mestizos, indigenous people had the highest number of cases (68.2%, n = 227), as well as a higher risk of infection (OR 7...
June 2, 2017: Vaccines
https://www.readbyqxmd.com/read/28556800/disease-prevention-an-opportunity-to-expand-edible-plant-based-vaccines
#16
REVIEW
Christopher Concha, Raúl Cañas, Johan Macuer, María José Torres, Andrés A Herrada, Fabiola Jamett, Cristian Ibáñez
The lethality of infectious diseases has decreased due to the implementation of crucial sanitary procedures such as vaccination. However, the resurgence of pathogenic diseases in different parts of the world has revealed the importance of identifying novel, rapid, and concrete solutions for control and prevention. Edible vaccines pose an interesting alternative that could overcome some of the constraints of traditional vaccines. The term "edible vaccine" refers to the use of edible parts of a plant that has been genetically modified to produce specific components of a particular pathogen to generate protection against a disease...
May 30, 2017: Vaccines
https://www.readbyqxmd.com/read/28538691/the-potential-cost-effectiveness-of-pre-exposure-prophylaxis-combined-with-hiv-vaccines-in-the-united-states
#17
Blythe J S Adamson, Josh J Carlson, James G Kublin, Louis P Garrison
This economic evaluation aims to support policy-making on the combined use of pre-exposure prophylaxis (PrEP) with HIV vaccines in development by evaluating the potential cost-effectiveness of implementation that would support the design of clinical trials for the assessment of combined product safety and efficacy. The target study population is a cohort of men who have sex with men (MSM) in the United States. Policy strategies considered include standard HIV prevention, daily oral PrEP, HIV vaccine, and their combination...
May 24, 2017: Vaccines
https://www.readbyqxmd.com/read/28524109/unexpected-infection-spikes-in-a-model-of-respiratory-syncytial-virus-vaccination
#18
Robert J Smith, Alexandra B Hogan, Geoffry N Mercer
Respiratory Syncytial Virus (RSV) is an acute respiratory infection that infects millions of children and infants worldwide. Recent research has shown promise for the development of a vaccine, with a range of vaccine types now in clinical trials or preclinical development. We extend an existing mathematical model with seasonal transmission to include vaccination. We model vaccination both as a continuous process, applying the vaccine during pregnancy, and as a discrete one, using impulsive differential equations, applying pulse vaccination...
May 18, 2017: Vaccines
https://www.readbyqxmd.com/read/28513561/the-effect-of-physicochemical-modification-on-the-function-of-antibodies-induced-by-anti-nicotine-vaccine-in-mice
#19
Jennifer M Thorn, Keshab Bhattacharya, Renata Crutcher, Justin Sperry, Colleen Isele, Barbara Kelly, Libbey Yates, James Zobel, Ningli Zhang, Heather L Davis, Michael J McCluskie
Smoking remains one of the major causes of morbidity and mortality worldwide. One approach to assisting smoking cessation is via anti-nicotine vaccines, composed of nicotine-like haptens conjugated to a carrier protein plus adjuvant(s). We have previously shown that the carrier, hapten, linker, hapten load, degree of conjugate aggregation, and presence of adducts can each influence the function (nicotine-binding capacity) of the antibody (Ab) induced. Herein, we extend those findings and show that tertiary structure is also critical to the induction of functional immune responses and that this can be influenced by conjugation conditions...
May 17, 2017: Vaccines
https://www.readbyqxmd.com/read/28468322/virus-like-particle-vlp-plus-microcrystalline-tyrosine-mct-adjuvants-enhance-vaccine-efficacy-improving-t-and-b-cell-immunogenicity-and-protection-against-plasmodium-berghei-vivax
#20
Gustavo Cabral-Miranda, Matthew D Heath, Mona O Mohsen, Ariane C Gomes, Paul Engeroff, Amy Flaxman, Fabiana M S Leoratti, Aadil El-Turabi, Arturo Reyes-Sandoval, Murray A Skinner, Matthias F Kramer, Martin F Bachmann
Vaccination is the most effective prophylactic tool against infectious diseases. Despite continued efforts to control malaria, the disease still generally represents a significant unmet medical need. Microcrystalline tyrosine (MCT) is a well described depot used in licensed allergy immunotherapy products and in clinical development. However, its proof of concept in prophylactic vaccines has only recently been explored. MCT has never been used in combination with virus-like particles (VLPs), which are considered to be one of the most potent inducers of cellular and humoral immune responses in mice and humans...
May 2, 2017: Vaccines
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