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https://www.readbyqxmd.com/read/27913239/strategy-for-assessment-of-the-colloidal-and-biological-stability-of-h1n1-influenza-a-viruses
#1
Frank Hämmerling, Oliver Lorenz-Cristea, Pascal Baumann, Jürgen Hubbuch
Current influenza vaccines are mostly formulated as liquids which requires a continuous cold chain to maintain the stability of the antigen. For development of vaccines with an increased stability at ambient temperatures, manifold parameters and their influences on the colloidal stability and activity of the antigen have to be understood. This work presents a strategy to examine both, the colloidal stability and the remaining biological activity of H1N1 influenza viruses under various conditions after an incubation of 40 days...
November 29, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27911254/neutralizing-and-enhancing-antibody-responses-to-five-genotypes-of-dengue-virus-type-1-denv-1-in-denv-1-patients
#2
Atsushi Yamanaka, Meng Ling Moi, Tomohiko Takasaki, Ichiro Kurane, Eiji Konishi
Dengue virus has four distinct serotypes, DENV-1-4, with 4-6 genotypes in each serotype. The World Health Organization recommends tetravalent formulations including one genotype of each serotype as safe and effective dengue vaccines. Here, we investigated the impact of genotype on the neutralizing antibody responses to DENV-1 in humans. Convalescent sera collected from patients with primary infection of DENV-1 were examined for neutralizing antibody against single-round infectious particles of the five DENV-1 genotypes (GI-GV)...
December 2, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27910739/overview-on-therapeutic-applications-of-microparticulate-drug-delivery-systems
#3
Swarna Bale, Amit Khurana, A Shiva Shankar Reddy, Mandip Singh, Chandraiah Godugu
Research in novel drug delivery systems is being explored competitively in order to attain maximum therapeutic effect while minimizing the adverse effects. Despite several advancements in pharmaceutical formulations, one of the major challenges still persisting is sustained drug release. Microencapsulation enacts as an intelligent approach with a strong therapeutic impact and is in demand globally in medical technology due to its specific and attractive properties, including biocompatibility, stability, target specificity, uniform encapsulation, better compliance, and controlled and sustained release patterns that are responsible for diminishing the toxicity and dosage frequency...
2016: Critical Reviews in Therapeutic Drug Carrier Systems
https://www.readbyqxmd.com/read/27902896/the-efficacy-of-chitosan-adjuvanted-mycoplasma-gallisepticum-bacterin-in-chickens
#4
Arithat Limsatanun, Jiroj Sasipreeyajan, Somsak Pakpinyo
Mycoplasma gallisepticum (MG) is one of the major pathogens that cause respiratory signs in the poultry industry. To control MG infection, vaccination is the useful procedure. In this study, MG vaccine was developed by using the local Thai MG isolate (AHRL 20/52). Chitosan, a polysaccharide adjuvant derived from crustaceans, has been successfully used in various vaccines. The objectives of this study were to prepare MG bacterins by using chitosan, serving as an adjuvant, to determine protection against the field Thai MG isolate and to evaluate tissue reaction at the injection site...
December 2016: Avian Diseases
https://www.readbyqxmd.com/read/27902762/presenting-influenza-a-m2e-antigen-on-recombinant-spores-of-bacillus-subtilis
#5
Tomasz Łęga, Paulina Weiher, Michał Obuchowski, Dawid Nidzworski
Effective vaccination against influenza virus infection is a serious problem mainly due to antigenic variability of the virus. Among many of investigated antigens, the extracellular domain of the M2 protein (M2e) features high homology in all strains of influenza A viruses and antibodies against M2e and is protective in animal models; this makes it a potential candidate for generation of a universal influenza vaccine. However, due to the low immunogenicity of the M2e, formulation of a vaccine based on this antigen requires some modification to induce effective immune responses...
2016: PloS One
https://www.readbyqxmd.com/read/27901642/a-generic-rna-pulsed-dc-based-approach-for-developing-therapeutic-intervention-against-nasopharyngeal-carcinoma
#6
Rajeev K Tyagi, Rajesh Parmar, Naisargee Patel
The recurrent nasopharyngeal carcinoma of head-and-neck cancers pathology showed unique symptoms and clinical characteristics. The complexity of pathology poses challenges for developing therapeutic interventional approaches against nasopharyngeal carcinoma (NPC). The conventional treatment regimens offer limited local control and survival, which, leads to adverse delayed complications. Our study present a generic monocyte derived dendritic cell (MoDC) vaccine strategy for NPC in which RNA is used as a source of tumor-associated antigens (TAAgs)...
November 30, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27901071/staphylococcus-aureus-dependent-septic-arthritis-in-murine-knee-joints-local-immune-response-and-beneficial-effects-of-vaccination
#7
Alessia Corrado, Paolo Donato, Silvia Maccari, Raffaella Cecchi, Tiziana Spadafina, Letizia Arcidiacono, Simona Tavarini, Chiara Sammicheli, Donatello Laera, Andrea Guido Oreste Manetti, Paolo Ruggiero, Bruno Galletti, Sandra Nuti, Ennio De Gregorio, Sylvie Bertholet, Anja Seubert, Fabio Bagnoli, Giuliano Bensi, Emiliano Chiarot
Staphylococcus aureus is the major cause of human septic arthritis and osteomyelitis, which deserve special attention due to their rapid evolution and resistance to treatment. The progression of the disease depends on both bacterial presence in situ and uncontrolled disruptive immune response, which is responsible for chronic disease. Articular and bone infections are often the result of blood bacteremia, with the knees and hips being the most frequently infected joints showing the worst clinical outcome. We report the development of a hematogenous model of septic arthritis in murine knees, which progresses from an acute to a chronic phase, similarly to what occurs in humans...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27899522/care-of-inflammatory-bowel-disease-patients-in-remission
#8
REVIEW
Charumathi Raghu Subramanian, George Triadafilopoulos
Inflammatory bowel disease (IBD) comprises two distinct conditions: ulcerative colitis and Crohn's disease, both of which are chronic, relapsing disorders carrying significant morbidity, mortality and healthcare costs. With growing attention to coordinated healthcare for patients with chronic systemic diseases, this review focuses on the care of IBD patients in remission, their concerns, quality of life, follow-up, the role of primary care physicians and the IBD-specific aspects of long-term care. We did an extensive PubMed search for articles pertaining to IBD patients in remission and, along with the authors' experience, formulated a comprehensive review...
November 2016: Gastroenterology Report
https://www.readbyqxmd.com/read/27899335/design-and-characterization-of-plasmids-encoding-antigenic-peptides-of-aha1-from-aeromonas-hydrophila-as-prospective-fish-vaccines
#9
Pradipta R Rauta, Bismita Nayak, Gabriel A Monteiro, Marília Mateus
The current investigation aimed at designing DNA vaccines against Aeromonas hydrophila infections. The DNA vaccine candidates were designed to express two antigenic outer membrane protein (Aha1) peptides and to be delivered by a nanoparticle-based delivery system. Gene sequences of conserved regions of antigenic Aha1 [aha1(211-381), aha1(211-381)opt, aha1(703-999) and aha1(703-999)opt] were cloned into pVAX-GFP expression vector. The selected DNA vaccine candidates were purified from E. coli DH5α and transfected into Chinese hamster ovary cells...
November 26, 2016: Journal of Biotechnology
https://www.readbyqxmd.com/read/27899306/molecular-characterization-of-chicken-anemia-virus-outbreaks-in-nagpur-province-india-from-2012-2015
#10
Ketan Ganar, Manisha Shah, Bhupesh P Kamdi, Nitin Vasantrao Kurkure, Sachin Kumar
Chicken anemia virus (CAV) is one of the important poultry pathogen. CAV infection can cause immunosuppression, aggravation of co-infections, vaccination failures and mortality. We are reporting the CAV outbreaks from the Nagpur province of India, between the years 2012-2015. The breed included cockerel and Black Australorp of age varying from 29 to 50 days. The mortality rate observed among poultry was from 20% to 62.5%. Clinical symptoms like anemia, subcutaneous hemorrhages, growth retardation, abnormal feathers and hind limb paralysis suggested CAV infection...
November 26, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27894910/cervical-cancer-screening-in-women-vaccinated-against-human-papillomavirus-infection-recommendations-from-a-consensus-conference
#11
Paolo Giorgi Rossi, Francesca Carozzi, Antonio Federici, Guglielmo Ronco, Marco Zappa, Silvia Franceschi
In Italy, the cohorts of women who were offered Human papillomavirus (HPV) vaccination in 2007/08 will reach the age for cervical cancer (CC) screening from 2017. The simultaneous shift from cytology-based screening to HPV test-based screening gives the opportunity for unprecedented reorganisation of CC prevention. The ONS (National Screening Monitoring Centre) Directive and the GISCi (Italian Group for Cervical Screening) identified the consensus conference as the most suitable method for addressing this topic...
November 25, 2016: Preventive Medicine
https://www.readbyqxmd.com/read/27894306/first-phase-i-human-clinical-trial-of-a-killed-whole-hiv-1-vaccine-demonstration-of-its-safety-and-enhancement-of-anti-hiv-antibody-responses
#12
Eunsil Choi, Chad J Michalski, Seung Ho Choo, Gyoung Nyoun Kim, Elizabeth Banasikowska, Sangkyun Lee, Kunyu Wu, Hwa-Yong An, Anthony Mills, Stefan Schneider, U Fritz Bredeek, Daniel R Coulston, Shilei Ding, Andrés Finzi, Meijuan Tian, Katja Klein, Eric J Arts, Jamie F S Mann, Yong Gao, C Yong Kang
BACKGROUND: Vaccination with inactivated (killed) whole-virus particles has been used to prevent a wide range of viral diseases. However, for an HIV vaccine this approach has been largely negated due to inherent safety concerns, despite the ability of killed whole-virus vaccines to generate a strong, predominantly antibody-mediated immune response in vivo. HIV-1 Clade B NL4-3 was genetically modified by deleting the nef and vpu genes and substituting the coding sequence for the Env signal peptide with that of honeybee melittin signal peptide to produce a less virulent and more replication efficient virus...
November 28, 2016: Retrovirology
https://www.readbyqxmd.com/read/27892866/effectiveness-of-a-bhv-1-befv-bivalent-vaccine-against-bovine-herpesvirus-type-1-infection-in-cattle
#13
Yao-Chi Chung, Hsiu-Yen Shen, Li-Ting Cheng, Shyh-Shyan Liu, Chun-Yen Chu
Bovine herpesvirus type 1 (BHV-1) causes acute febrile respiratory diseases (infectious bovine rhinotracheitis, IBR), decreased milk production, weight loss and abortion. Bovine ephemeral fever virus (BEFV) causes acute febrile respiratory disease, with pulmonary emphysema and pulmonary edema as the main signs. These viruses infect domesticated herds and lead to significant economic losses. In our previous study, an inactivated BHV-1 and BEFV bivalent vaccine was formulated with water-in-oil-in-water adjuvant, and vaccine efficacy was evaluated in guinea pigs...
October 13, 2016: Research in Veterinary Science
https://www.readbyqxmd.com/read/27892855/application-of-ethnobotanical-repellents-and-acaricides-in-prevention-control-and-management-of-livestock-ticks-a-review
#14
REVIEW
Roman Pavela, Angelo Canale, Heinz Mehlhorn, Giovanni Benelli
Ticks transmit at least the same number or even more pathogens than any other group of blood-feeding arthropods worldwide affecting humans and animals. The eco-friendly control and management of tick vectors in a constantly changing environment is a crucial challenge. Besides the development of vaccines against ticks, IPM practices aimed at reducing tick interactions with livestock, emerging pheromone-based control tools, and few biological control agents, the extensive employment of acaricides and tick repellents still remain the most effective and ready-to-use strategies...
September 9, 2016: Research in Veterinary Science
https://www.readbyqxmd.com/read/27891225/unraveling-the-role-of-preexisting-immunity-in-prostate-cancer-patients-vaccinated-with-a-her-2-neu-hybrid-peptide
#15
Ioannis F Voutsas, Eleftheria A Anastasopoulou, Panagiotis Tzonis, Michael Papamichail, Sonia A Perez, Constantin N Baxevanis
BACKGROUND: Cancer vaccines aim at eliciting not only an immune response against specific tumor antigens, but also at enhancing a preexisting immunity against the tumor. In this context, we recently reported on the levels of preexisting immunity in prostate cancer patients vaccinated with the HER-2 hybrid peptide (AE37), during a phase I clinical trial. The purpose of the current study was to correlate between preexisting immunity to the native HER-2 peptide, AE36, and expression of HLA-A2 and -A24 molecules with the clinical outcome...
2016: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/27890399/a-partially-purified-outer-membrane-protein-virb9-1-for-low-cost-nanovaccines-against-anaplasma-marginale
#16
Liang Zhao, Antonino S Cavallaro, David Wibowo, Bing Zhang, Jun Zhang, Neena Mitter, Chengzhong Yu, Chun-Xia Zhao, Anton P J Middelberg
Anaplasma marginale is a devastating tick-borne pathogen causing anaplasmosis in cattle and results in significant economic loss to the cattle industry worldwide. Currently, there is no widely accepted vaccine against A. marginale. New generation subunit vaccines against A. marginale, which are much safer, more efficient and cost-effective, are in great need. The A. marginale outer membrane protein VirB9-1 is a promising antigen for vaccination. We previously have shown that soluble recombinant VirB9-1 protein can be expressed and purified from Escherichia coli and induce a high level of humoral and cellular immunity in mice...
November 24, 2016: Vaccine
https://www.readbyqxmd.com/read/27890396/structure-based-design-of-broadly-protective-group-a-streptococcal-m-protein-based-vaccines
#17
James B Dale, Pierre R Smeesters, Harry S Courtney, Thomas A Penfound, Claudia M Hohn, Jeremy C Smith, Jerome Y Baudry
BACKGROUND: A major obstacle to the development of broadly protective M protein-based group A streptococcal (GAS) vaccines is the variability within the N-terminal epitopes that evoke potent bactericidal antibodies. The concept of M type-specific protective immune responses has recently been challenged based on the observation that multivalent M protein vaccines elicited cross-reactive bactericidal antibodies against a number of non-vaccine M types of GAS. Additionally, a new "cluster-based" typing system of 175M proteins identified a limited number of clusters containing closely related M proteins...
November 24, 2016: Vaccine
https://www.readbyqxmd.com/read/27889801/production-and-purification-of-an-untagged-recombinant-pneumococcal-surface-protein-a-pspa4pro-with-high-purity-and-low-endotoxin-content
#18
Douglas B Figueiredo, Eneas Carvalho, Mauricio P Santos, Stefanie Kraschowetz, Rafaela T Zanardo, Gilson Campani, Gabriel G Silva, Cíntia R Sargo, Antonio Carlos L Horta, Roberto de C Giordano, Eliane N Miyaji, Teresa C Zangirolami, Joaquin Cabrera-Crespo, Viviane Maimoni Gonçalves
Streptococcus pneumoniae is the main cause of pneumonia, meningitis, and other conditions that kill thousands of children every year worldwide. The replacement of pneumococcal serotypes among the vaccinated population has evidenced the need for new vaccines with broader coverage and driven the research for protein-based vaccines. Pneumococcal surface protein A (PspA) protects S. pneumoniae from the bactericidal effect of human apolactoferrin and prevents complement deposition. Several studies indicate that PspA is a very promising target for novel vaccine formulations...
November 26, 2016: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/27888816/opinions-about-vaccination-among-mothers-who-delivered-newborns-in-two-hospitals-in-krakow-and-my%C3%A5-lenice
#19
Dorota Mrożek-Budzyn, Agnieszka Kiełtyka, Elżbieta Mróz
INTRODUCTION AND OBJECTIVE: Campaigns against vaccinations in Poland have been increasingly more frequently observed in recent years, that was the reason of bigger number of parents refusing a consent for their children immunization. The aim of study was to determine the sources of information which significantly influence mothers’ opinions about vaccinations. MATERIALS AND METHODS: A survey was conducted among 154 randomly selected mothers hospitalized after childbearing in two hospitals in Krakow and Myslenice at the end of 2014 and in 2015...
2016: Przegla̧d Epidemiologiczny
https://www.readbyqxmd.com/read/27888253/thermo-sensitive-hydrogel-plga-peg-plga-as-a-vaccine-delivery-system-for-intramuscular-immunization
#20
Xiaoyan Wang, Yu Zhang, Wei Xue, Hong Wang, Xiaozhong Qiu, Zonghua Liu
In this work, we explored the potential of thermo-sensitive PLGA-PEG-PLGA with sol-gel transition temperature around 32℃ as an intramuscular vaccine delivery system by using ovalbumin as a model antigen. First, in vitro release test showed that the PLGA-PEG-PLGA-deriving hydrogels could release ovalbumin in vitro in a more sustainable way. From fluorescence living imaging, 50-200 mg/mL of PLGA-PEG-PLGA formulations could release antigen in a sustainable manner in vivo, suggesting that the PLGA-PEG-PLGA hydrogel worked as an antigen-depot...
November 25, 2016: Journal of Biomaterials Applications
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