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https://www.readbyqxmd.com/read/28344402/preparation-of-mucosal-nanoparticles-and-polymer-based-inactivated-vaccine-for-newcastle-disease-and-h9n2-ai-viruses
#1
Heba M El Naggar, Mohamed Sayed Madkour, Hussein Ali Hussein
AIM: To develop a mucosal inactivated vaccines for Newcastle disease (ND) and H9N2 viruses to protect against these viruses at sites of infections through mucosal immunity. MATERIALS AND METHODS: In this study, we prepared two new formulations for mucosal bivalent inactivated vaccine formulations for Newcastle and Avian Influenza (H9N2) based on the use of nanoparticles and polymer adjuvants. The prepared vaccines were delivered via intranasal and spray routes of administration in specific pathogen-free chickens...
February 2017: Veterinary World
https://www.readbyqxmd.com/read/28344167/protection-and-antibody-reactivity-following-vaccination-of-lumpfish-cyclopterus-lumpus-l-against-atypical-aeromonas-salmonicida
#2
Anita Rønneseth, Gyri T Haugland, Duncan J Colquhoun, Espen Brudal, Heidrun I Wergeland
Atypical Aeromonas salmonicida is frequently associated with disease and mortality in farmed lumpfish (Cyclopterus lumpus L). Challenge experiments using different modes of exposure identified both high and low pathogenic isolates. Intraperitoneal vaccination induced production of high levels of specific antibodies particularly in fish given multiple injections. The immune sera contained antibodies cross reactive with both high and low pathogenic isolates. SDS-PAGE and LC/MSMS analyses showed that the highly virulent isolate expressed the virulence array protein (A-layer) while the less virulent isolate did not...
March 23, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28343701/toll-like-receptor-8-agonist-nanoparticles-mimic-immunomodulating-effects-of-the-live-bcg-vaccine-and-enhance-neonatal-innate-and-adaptive-immune-responses
#3
David J Dowling, Evan A Scott, Annette Scheid, Ilana Bergelson, Sweta Joshi, Carlo Pietrasanta, Spencer Brightman, Guzman Sanchez-Schmitz, Simon D Van Haren, Jana Ninković, Dina Kats, Cristiana Guiducci, Alexandre de Titta, Daniel K Bonner, Sachiko Hirosue, Melody A Swartz, Jeffrey A Hubbell, Ofer Levy
BACKGROUND: Newborns display distinct immune responses, leaving them vulnerable to infections and impairing immunization. Targeting newborn dendritic cells (DCs), which integrate vaccine signals into adaptive immune responses, might enable development of age-specific vaccine formulations to overcome suboptimal immunization. OBJECTIVE: Small-molecule imidazoquinoline Toll-like receptor (TLR) 8 agonists robustly activate newborn DCs but can result in reactogenicity when delivered in soluble form...
March 14, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28341111/generation-characterization-and-immunogenicity-of-a-novel-chimeric-recombinant-protein-based-on-plasmodium-vivax-ama-1-and-msp119
#4
Mariana Vilela Rocha, Kátia Sanches Françoso, Luciana Chagas Lima, Tarsila Mendes Camargo, Ricardo L D Machado, Fabio T M Costa, Laurent Rénia, Francois Nosten, Bruce Russell, Mauricio M Rodrigues, Irene S Soares
Plasmodium vivax is the most widely distributed malaria species and the most prevalent species of malaria in America and Asia. Vaccine development against P. vivax is considered a priority in the global program for the eradication of malaria. Earlier studies have characterized the Apical Membrane Antigen 1 (AMA-1) ectodomain and the C-terminal region (19kDa) of the Merozoite Surface Protein 1 (MSP-1) of P. vivax as immunodominant antigens. Based on this characterization, we designed a chimeric recombinant protein containing both merozoite immunodominant domains (PvAMA166-MSP119)...
March 21, 2017: Vaccine
https://www.readbyqxmd.com/read/28340322/immunogenicity-and-safety-of-primary-and-booster-vaccination-with-2-investigational-formulations-of-diphtheria-tetanus-and-haemophilus-influenzae-type-b-antigens-in-a-hexavalent-dtpa-hbv-ipv-hib-combination-vaccine-in-comparison-with-the-licensed-infanrix-hexa
#5
Timo Vesikari, Luis Rivera, Tiina Korhonen, Anitta Ahonen, Brigitte Cheuvart, Marjan Hezareh, Winnie Janssens, Narcisa Mesaros
Safety and immunogenicity of 2 investigational formulations of diphtheria, tetanus and Haemophilus influenzae type b antigens of the combined diphtheria-tetanus-acellular pertussis-hepatitis B-inactivated poliomyelitis-Hib vaccine (DTPa-HBV-IPV/Hib) were evaluated in a Primary (NCT01248884) and a Booster vaccination (NCT01453998) study. In the Primary study, 721 healthy infants (randomized 1:1:1) received 3 doses of DTPa-HBV-IPV/Hib formulation A (DATAPa-HBV-IPV/Hib), or B (DBTBPa-HBV-IPV/Hib) or the licensed DTPa-HBV-IPV/Hib vaccine (Infanrix hexa, GSK; control group) at 2, 3, 4 months of age...
March 24, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28337198/role-of-metallic-nanoparticles-in-vaccinology-implications-for-infectious-disease-vaccine-development
#6
REVIEW
Lázaro Moreira Marques Neto, André Kipnis, Ana Paula Junqueira-Kipnis
Subunit vaccines are safer but less immunogenic than live-attenuated vaccines or whole cell inactivated vaccines. Adjuvants are used to enhance and modulate antigen (Ag) immunogenicity, aiming to induce a protective and long-lasting immune response. Several molecules and formulations have been studied for their adjuvanticity, but only seven have been approved to formulate human vaccines. Metallic nanoparticles (MeNPs), particularly those containing gold and iron oxides, are widely used in medicine for diagnosis and therapy and have been used as carriers for drugs and vaccines...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28336210/burkholderia-pseudomallei-and-burkholderia-mallei-vaccines-are-we-close-to-clinical-trials
#7
REVIEW
Richard W Titball, Mary N Burtnick, Gregory J Bancroft, Paul Brett
B. pseudomallei is the cause of melioidosis, a serious an often fatal disease of humans and animals. The closely related bacterium B. mallei, which cases glanders, is considered to be a clonal derivative of B. pseudomallei. Both B. pseudomallei and B. mallei were evaluated by the United States and the former USSR as potential bioweapons. Much of the effort to devise biodefence vaccines in the past decade has been directed towards the identification and formulation of sub-unit vaccines which could protect against both melioidosis and glanders...
March 20, 2017: Vaccine
https://www.readbyqxmd.com/read/28335329/nanoparticle-based-delivery-of-anaplasma-marginale-membrane-proteins-virb9-1-and-virb10-produced-in-the-pichia-pastoris-expression-system
#8
Bing Zhang, Antonio S Cavallaro, Karishma T Mody, Jun Zhang, James R Deringer, Wendy C Brown, Timothy J Mahony, Chengzhong Yu, Neena Mitter
Bovine anaplasmosis or cattle-tick fever is a tick-borne haemolytic disease caused by the rickettsial haemoparasite Anaplasma marginale in tropical and subtropical areas of the world. While difficult to express, the proteins VirB9-1 and VirB10 are immunogenic components of the outer membrane type IV secretion system that have been identified as candidate antigens for vaccines targeting of A. marginale. Soluble VirB9-1 and VirB10 were successfully expressed using Pichia pastoris. When formulated with the self-adjuvanting silica vesicles, SV-100 (diameter: 50 nm, and pore entrance size: 6 nm), 200 µg of VirB9-1 and VirB10 were adsorbed per milligram of nanoparticle...
November 5, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28330602/the-pneumococcal-alpha-glycerophosphate-oxidase-enhances-nasopharyngeal-colonization-through-binding-to-host-glycoconjugates
#9
Layla K Mahdi, Melanie A Higgins, Christopher J Day, Joe Tiralongo, Lauren E Hartley-Tassell, Michael P Jennings, David L Gordon, Adrienne W Paton, James C Paton, Abiodun D Ogunniyi
Streptococcus pneumoniae (the pneumococcus) is a major human pathogen, causing a broad spectrum of diseases including otitis media, pneumonia, bacteraemia and meningitis. Here we examined the role of a potential pneumococcal meningitis vaccine antigen, alpha-glycerophosphate oxidase (SpGlpO), in nasopharyngeal colonization. We found that serotype 4 and serotype 6A strains deficient in SpGlpO have significantly reduced capacity to colonize the nasopharynx of mice, and were significantly defective in adherence to human nasopharyngeal carcinoma cells in vitro...
March 3, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28327531/porcine-dendritic-cells-as-an-in-vitro-model-to-assess-the-immunological-behaviour-of-streptococcus-suis-subunit-vaccine-formulations-and-the-polarizing-effect-of-adjuvants
#10
Léa Martelet, Sonia Lacouture, Guillaume Goyette-Desjardins, Guy Beauchamp, Charles Surprenant, Marcelo Gottschalk, Mariela Segura
An in vitro porcine bone marrow-derived dendritic cell (DC) culture was developed as a model for evaluating immune polarization induced by adjuvants when administered with immunogens that may become vaccine candidates if appropriately formulated. The swine pathogen Streptococcus suis was chosen as a prototype to evaluate proposed S. suis vaccine candidates in combination with the adjuvants Poly I:C, Quil A ®, Alhydrogel ®, TiterMax Gold ® and Stimune ®. The toll-like receptor ligand Poly I:C and the saponin Quil A ® polarized swine DC cytokines towards a type 1 phenotype, with preferential production of IL-12 and TNF-α...
March 22, 2017: Pathogens
https://www.readbyqxmd.com/read/28323523/rapid-dna-vaccination-against-burkholderia-pseudomallei-flagellin-by-tattoo-or-intranasal-application
#11
Jacqueline M Lankelma, Alex Wagemakers, Emma Birnie, Bastiaan W Haak, Jos J A Trentelman, Tassili A F Weehuizen, Jasmin Ersöz, Joris J T H Roelofs, Joppe W Hovius, W Joost Wiersinga, Adriaan D Bins
Melioidosis is a severe infectious disease with a high mortality that is endemic in South-East Asia and Northern Australia. The causative pathogen, Burkholderia pseudomallei, is listed as potential bioterror weapon due to its high virulence and potential for easy dissemination. Currently, there is no licensed vaccine for prevention of melioidosis. Here, we explore the use of rapid plasmid DNA vaccination against B. pseudomallei flagellin for protection against respiratory challenge. We tested three flagellin DNA vaccines with different subcellular targeting designs...
March 21, 2017: Virulence
https://www.readbyqxmd.com/read/28321220/adjusted-particle-size-eliminates-the-need-of-linkage-of-antigen-and-adjuvants-for-appropriated-t-cell-responses-in-virus-like-particle-based-vaccines
#12
Ariane C Gomes, Anna Flace, Philippe Saudan, Franziska Zabel, Gustavo Cabral-Miranda, Aadil El Turabi, Vania Manolova, Martin F Bachmann
Since the discovery of the first virus-like particle (VLP) derived from hepatitis B virus in 1980 (1), the field has expanded substantially. Besides successful use of VLPs as safe autologous virus-targeting vaccines, the powerful immunogenicity of VLPs has been also harnessed to generate immune response against heterologous and even self-antigens (2-4). Linking adjuvants to VLPs displaying heterologous antigen ensures simultaneous delivery of all vaccine components to the same antigen-presenting cells. As a consequence, antigen-presenting cells, such as dendritic cells, will process and present the antigen displayed on VLPs while receiving costimulatory signals by the VLP-incorporated adjuvant...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28320753/do-memory-b-cells-form-secondary-germinal-centers-impact-of-antibody-class-and-quality-of-memory-t-cell-help-at-recall
#13
Louise J McHeyzer-Williams, Chad Dufaud, Michael G McHeyzer-Williams
Antigen recall can clearly induce a germinal center (GC) reaction. What has become an issue for debate are the origins of the antigen-specific B cells that form memory-response GCs (mGCs). Using antigen labeling and adoptive transfer, memory B cells expressing different antibody class can give rise to mGCs with differing efficiency. Here, we will argue that the range of class-specific memory responses reported across multiple systems represents the spectrum of memory B-cell fate and function. While the formulation of recall immunogen and location of mGCs have an important role, we propose that effective cognate regulation is the key variable influencing recall outcome...
March 20, 2017: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/28316602/toll-like-receptor-ligand-based-vaccine-adjuvants-require-intact-myd88-signaling-in-antigen-presenting-cells-for-germinal-center-formation-and-antibody-production
#14
Munir M Mosaheb, Michael L Reiser, Lee M Wetzler
Vaccines are critical in the fight against infectious diseases, and immune-stimulating adjuvants are essential for enhancing vaccine efficacy. However, the precise mechanisms of action of most adjuvants are unknown. There is an urgent need for customized and adjuvant formulated vaccines against immune evading pathogens that remain a risk today. Understanding the specific role of various cell types in adjuvant-induced protective immune responses is vital for an effective vaccine design. We have investigated the role of cell-specific MyD88 signaling in vaccine adjuvant activity in vivo, using Neisserial porin B (PorB), a TLR2 ligand-based adjuvant, compared with an endosomal TLR9 ligand (CpG) and toll-like receptor (TLR)-independent (alum, MF59) adjuvants...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28302407/immunogenicity-and-safety-of-an-as03-adjuvanted-h7n1-vaccine-in-adults-65years-of-age-and-older-a-phase-ii-observer-blind-randomized-controlled-trial
#15
Anuradha Madan, Murdo Ferguson, Paul Rheault, David Seiden, Azhar Toma, Damien Friel, Jyoti Soni, Ping Li, Bruce L Innis, Anne Schuind
BACKGROUND: H7 influenza strains can cause severe and often fatal human infections, especially in the elderly. This phase II, observer-blind, randomized trial (www.ClinicalTrials.gov: NCT01949090) assessed the immunogenicity and safety of a novel AS03-adjuvanted H7N1 vaccine that may serve as a model H7-subtype vaccine. METHODS: 360 adults ≥65years of age in stable health received either 1 of 4 adjuvanted A/mallard/Netherlands/12/2000 split virion vaccine formulations (3...
March 13, 2017: Vaccine
https://www.readbyqxmd.com/read/28301280/panblok-h1-advax-h1n1-2009pdm-vaccine-insights-into-rapid-development-of-an-delta-inulin-adjuvanted-recombinant-pandemic-influenza-vaccine
#16
Yoshikazu Honda-Okubo, Harinda Rajapaksha, Dimitar Sajkov, David Gordon, Manon M J Cox, Nikolai Petrovsky
Timely vaccine supply is critical during influenza pandemics but is impeded by current virus-based manufacturing methods. The 2009 H1N1/2009pdm 'swine flu' pandemic reinforced the need for innovation in pandemic vaccine design. We report on insights gained during rapid development of a pandemic vaccine based on recombinant haemagglutinin (rHA) formulated with Advax™ delta inulin adjuvant (Panblok-H1/Advax). Panblok-H1/Advax was designed and manufactured within 1 month of the pandemic declaration by WHO and successfully entered human clinical testing in under 3 months from first isolation and sequencing of the novel pandemic virus, requiring several major challenges to be overcome...
February 14, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28301266/immunogenicity-and-safety-of-a-trivalent-inactivated-influenza-vaccine-produced-in-shenzhen-china
#17
Zhaojun Mo, Yi Nong, Shuzhen Liu, Ming Shao, Xueyan Liao, Kerry Go, Nathalie Lavis
A split-virion trivalent inactivated influenza vaccine produced according to the Chinese pharmacopeia (Shz-IIV3) has been commercially available in China since 2014. Here, we describe the results of a phase IV open-label trial to describe the immunogenicity and safety of the 2014-2015 Northern Hemisphere formulation of Shz-IIV3 in individuals ≥ 6 months of age. Subjects 6-35 months of age received 2 half-doses of Shz-IIV3 (0.25 ml) 28 d apart, and subjects ≥ 3 y of age received a single full dose (0...
February 14, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28290130/the-choosing-wisely-initiative-in-infectious-diseases
#18
REVIEW
Clara Lehmann, Reinhard Berner, Johannes R Bogner, Oliver A Cornely, Katja de With, Susanne Herold, Winfried V Kern, Sebastian Lemmen, Mathias W Pletz, Bernhard Ruf, Bernd Salzberger, Hans Jürgen Stellbrink, Norbert Suttorp, Andrew J Ullmann, Gerd Fätkenheuer, Norma Jung
OBJECTIVE: "Choosing Wisely" is a growing international campaign aiming at practice changes to improve patient health and safety by both, conduct of essential and avoidance of unnecessary diagnostic, preventive and therapeutic procedures. The goal is to create an easily recognizable and distributable list ("Choosing Wisely items") that addresses common over- and underuse in the management of infectious diseases. METHODS: The German Society of Infectious Diseases (DGI) participates in the campaign "Klug Entscheiden" by the German Society of Internal Medicine...
March 13, 2017: Infection
https://www.readbyqxmd.com/read/28289411/immunogenicity-of-a-bivalent-adjuvanted-glycoconjugate-vaccine-against-salmonella-typhimurium-and-salmonella-enteritidis
#19
Fabio Fiorino, Simona Rondini, Francesca Micoli, Luisa Lanzilao, Renzo Alfini, Francesca Mancini, Calman A MacLennan, Donata Medaglini
Salmonella enterica serovars Typhimurium and Enteritidis are the predominant causes of invasive non-typhoidal Salmonella (iNTS) disease. Considering the co-endemicity of S. Typhimurium and S. Enteritidis, a bivalent vaccine formulation against both pathogens is necessary for protection against iNTS disease, thus investigation of glycoconjugate combination is required. In the present work, we investigated the immune responses induced by S. Typhimurium and S. Enteritidis monovalent and bivalent glycoconjugate vaccines adjuvanted with aluminum hydroxide (alum) only or in combination with cytosine-phosphorothioate-guanine oligodeoxynucleotide (CpG)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28288926/development-of-new-microsatellites-for-the-hookworm-ancylostoma-caninum-and-analysis-of-genetic-diversity-in-brazilian-populations
#20
Élida Mara Leite Rabelo, Rodrigo Rodrigues Cambraia de Miranda, Luis Fernando Viana Furtado, Rodrigo Aparecido Fernandes Redondo, Jacob Adam Tennessen, Michael Scott Blouin
Considering the great efforts towards formulating a vaccine against hookworms, and the concerns about the spread of drug resistance through hookworm populations, it is justified to study the molecular diversity and population genetic structure of these nematodes. This work had the aim to develop microsatellite markers to investigate the genetic structure and the molecular diversity of Brazilian populations of Ancylostoma caninum. Seven microsatellites markers were successfully used to characterize five Brazilian populations...
March 10, 2017: Infection, Genetics and Evolution
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