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vaccine; immunization; immunisation

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https://www.readbyqxmd.com/read/28917537/hbcag-produced-in-transgenic-tobacco-triggers-th1-and-th2-response-when-intramuscularly-delivered
#1
Marcin Pyrski, Anna Rugowska, Kamil Robert Wierzbiński, Anna Kasprzyk, Maria Bogusiewicz, Piotr Bociąg, Sławomir Samardakiewicz, Marcin Czyż, Maciej Kurpisz, Tomasz Pniewski
Hepatitis B core Antigen (HBcAg) assembled into Capsid-Like Particles (CLPs) is investigated as a therapeutic vaccine in treatment of chronic hepatitis B (CHB) and in diagnostic tests or as a carrier for various epitopes. While the expression of HBcAg has been thoroughly clarified in E. coli and yeast, it has also been investigated in other expression systems. Stably transformed tobacco expressed HBcAg at a level of 110-250µg/g fresh weight, therefore in view of its large leaf biomass it offers a production platform comparable with transient expression systems regarding the final yield of HBcAg...
September 13, 2017: Vaccine
https://www.readbyqxmd.com/read/28917316/humoral-and-cytokine-response-elicited-during-immunisation-with-recombinant-immune-mapped-protein-1-etimp-1-and-oocysts-of-eimeria-tenella
#2
Krishnendu Kundu, Rajat Garg, Saroj Kumar, Mrityunjay Mandal, Fiona M Tomley, Damer P Blake, Partha Sarathi Banerjee
Eimeria tenella, the causative agent of caecal coccidiosis, is a pathogenic gut dwelling protozoan which can cause severe morbidity and mortality in farmed chickens. Immune mapped protein-1 (IMP-1) has been identified as an anticoccidial vaccine candidate; in the present study allelic polymorphism was assessed across the IMP-1 coding sequence in E. tenella isolates from four countries and compared with the UK reference Houghton strain. Nucleotide diversity was low, limited to expansion/contraction of a CAG triplet repeat and five substitutions, three of which were non-synonymous...
September 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28917313/field-evaluation-of-poultry-red-mite-dermanyssus-gallinae-native-and-recombinant-prototype-vaccines
#3
Kathryn Bartley, Frank Turnbull, Harry W Wright, John F Huntley, Javier Palarea-Albaladejo, Mintu Nath, Alasdair J Nisbet
Vaccination is a desirable emerging strategy to combat poultry red mite (PRM), Dermanyssus gallinae. We performed trials, in laying hens in a commercial-style cage facility, to test the vaccine efficacy of a native preparation of soluble mite extract (SME) and of a recombinant antigen cocktail vaccine containing bacterially-expressed versions of the immunogenic SME proteins Deg-SRP-1, Deg-VIT-1 and Deg-PUF-1. Hens (n=384 per group) were injected with either vaccine or adjuvant only (control group) at 12 and 17 weeks of age and then challenged with PRM 10days later...
September 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28915996/alternative-strategy-for-visceral-leishmaniosis-control-hisak70-salmonella-choleraesuis-pulsed-dendritic-cells
#4
Gustavo Domínguez-Bernal, Abel Martínez-Rodrigo, Alicia Mas, M Mar Blanco, José A Orden, Ricardo De La Fuente, Javier Carrión
Here, we describe a novel approach that exploits an attenuated mutant of Salmonella enterica serovar Choleraesuis as carrier to deliver a plasmid encoding protein HisAK70. Subsequently, dendritic cells (DCs) were pulsed with this vaccine vector. The aim of this study was to evaluate the effectiveness of the prepared HisAK70-S. Choleraesuis-pulsed DCs (HisAK70-SAL DCs) against visceral leishmaniosis (VL). In our ex vivo model of infection, the prepared formulations could decrease parasite growth by up to 80% by augmenting the production of IL-12p40 and by reducing arginase activity (ARG)...
October 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28899625/cost-effectiveness-of-hpv-vaccination-in-the-context-of-high-cervical-cancer-incidence-and-low-screening-coverage
#5
Triin Võrno, Katrin Lutsar, Anneli Uusküla, Lee Padrik, Terje Raud, Rainer Reile, Oliver Nahkur, Raul-Allan Kiivet
BACKGROUND: Estonia has high cervical cancer incidence and low screening coverage. We modelled the impact of population-based bivalent, quadrivalent or nonavalent HPV vaccination alongside cervical cancer screening. METHODS: A Markov cohort model of the natural history of HPV infection was used to assess the cost-effectiveness of vaccinating a cohort of 12-year-old girls with bivalent, quadrivalent or nonavalent vaccine in two doses in a national, school-based vaccination programme...
September 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28894312/-there-s-no-touching-in-pharmacy-training-pharmacists-for-australia-s-first-pharmacist-immunization-pilot
#6
Esther T L Lau, Michelle E Rochin, Megan DelDot, Beverley D Glass, Lisa M Nissen
BACKGROUND: Vaccination is a safe, efficient, and cost-effective means of preventing, controlling, and eradicating many life-threatening infections and diseases. Globally, the World Health Organization estimates that vaccination saves between 2 million and 3 million lives annually. However, low immunization rates are a significant public health concern. Individual factors, along with the vaccination process and system, have been reported as perceived barriers and challenges to immunization...
July 2017: Canadian Journal of Hospital Pharmacy
https://www.readbyqxmd.com/read/28887219/novel-freeze-dried-dda-and-tpgs-liposomes-are-suitable-for-nasal-delivery-of-vaccine
#7
Helmy Yusuf, Ahlam A Ali, Natalie Orr, Helen O McCarthy, Vicky L Kett
There is a pressing need for effective needle-free vaccines that are stable enough for use in the developing world and stockpiling. The inclusion of the cationic lipid DDA and the PEG-containing moiety TPGS into liposomes has the potential to improve mucosal delivery. The aim of this study was to develop stable lyophilized cationic liposomes based on these materials suitable for nasal antigen delivery. Liposomes containing DDA and TPGS were developed. Size and zeta potential measurements, ex vivo, CLSM cell penetration study and cell viability investigations were made...
September 5, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28883023/time-to-consider-a-targeted-hpv-vaccination-programme-for-male-military-recruits
#8
William M J Sharp, T Nadarzynski, N E Dufty
Human papillomaviruses (HPV) are the most common type of sexually transmitted infection in men but also related to high-risk cancers. This article considers the epidemiology of HPV in the male military population, the UK vaccination programme and the current UK Joint Committee on Vaccination and Immunisation recommendations. Military men may not benefit from HPV herd immunity and may have a different risk profile; vaccination may in turn reduce the operational burden of HPV-related disease within this population...
September 6, 2017: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/28870202/an-assessment-of-healthcare-professionals-knowledge-about-and-attitude-towards-influenza-vaccination-in-freetown-sierra-leone-a-cross-sectional-study
#9
Peter Bai James, Inayat Ur Rehman, Abudulai Jawo Bah, Michael Lahai, Christine Princess Cole, Tahir Mehmood Khan
BACKGROUND: Vaccinating healthcare professionals against influenza is considered an effective infection control measure. However, there is a low uptake of influenza vaccine among healthcare professionals around the globe. Currently, it is unknown whether healthcare professionals in Sierra Leone are aware of, and have been vaccinated against influenza. Also, there is a paucity of research evidence on their level of knowledge and attitude toward influenza vaccination. This study assessed healthcare professionals' current influenza vaccine uptake rate, reasons for not getting vaccinated as well as their awareness, knowledge of, and attitude towards influenza vaccination in Freetown Sierra Leone...
September 5, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28859849/comparative-analysis-of-the-immune-responses-induced-by-native-versus-recombinant-versions-of-the-asp-based-vaccine-against-the-bovine-intestinal-parasite-cooperia-oncophora
#10
Ana González-Hernández, Jimmy Borloo, Iris Peelaers, Stijn Casaert, Georges Leclercq, Edwin Claerebout, Peter Geldhof
The protective capacities of a native double-domain activation-associated secreted protein (ndd-ASP)-based vaccine against the cattle intestinal nematode Cooperia oncophora has previously been demonstrated. However, protection analysis upon vaccination with a recombinantly produced antigen has never been performed. Therefore, the aim of the current study was to test the protective potential of a Pichia-produced double-domain ASP (pdd-ASP)-based vaccine against C. oncophora. Additionally, we aimed to compare the cellular and humoral mechanisms underlying the vaccine-induced responses by the native (ndd-ASP) and recombinant vaccines...
August 30, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28857649/immune-responses-to-oral-poliovirus-vaccine-in-hiv-exposed-uninfected-zimbabwean-infants
#11
James A Church, Sandra Rukobo, Margaret Govha, Marya P Carmolli, Sean A Diehl, Bernard Chasekwa, Robert Ntozini, Kuda Mutasa, Jean H Humphrey, Beth D Kirkpatrick, Andrew J Prendergast
It remains uncertain whether HIV-exposed uninfected (HEU) infants have impaired responses to oral vaccines. We carried out a cross-sectional study of 6-month-old infants recruited at birth to the ZVITAMBO trial in Zimbabwe between 1997-2001, prior to introduction of prevention of mother-to-child transmission interventions. We measured poliovirus-specific IgA to type 1-3 polio strains by semi-quantitative capture ELISA in cryopreserved serum samples collected from 85 HEU and 101 HIV-unexposed infants at 6 months of age, one month after their last immunisation with trivalent OPV...
August 31, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/28830694/vaccine-hesitancy-refusal-and-access-barriers-the-need-for-clarity-in-terminology
#12
Helen Bedford, Katie Attwell, Margie Danchin, Helen Marshall, Paul Corben, Julie Leask
Although vaccination uptake is high in most countries, pockets of sub-optimal coverage remain posing a threat to individual and population immunity. Increasingly, the term 'vaccine hesitancy' is being used by experts and commentators to explain sub-optimal vaccination coverage. We contend that using this term to explain all partial or non-immunisation risks generating solutions that are a poor match for the problem in a particular community or population. We propose more precision in the term 'vaccine hesitancy' is needed particularly since much under-vaccination arises from factors related to access or pragmatics...
August 19, 2017: Vaccine
https://www.readbyqxmd.com/read/28819257/cytolytic-dna-vaccine-encoding-lytic-perforin-augments-the-maturation-of-and-antigen-presentation-by-dendritic-cells-in-a-time-dependent-manner
#13
Danushka K Wijesundara, Wenbo Yu, Ben J C Quah, Preethi Eldi, John D Hayball, Kerrilyn R Diener, Ilia Voskoboinik, Eric J Gowans, Branka Grubor-Bauk
The use of cost-effective vaccines capable of inducing robust CD8(+) T cell immunity will contribute significantly towards the elimination of persistent viral infections and cancers worldwide. We have previously reported that a cytolytic DNA vaccine encoding an immunogen and a truncated mouse perforin (PRF) protein significantly augments anti-viral T cell (including CD8(+) T cell) immunity. Thus, the current study investigated whether this vaccine enhances activation of dendritic cells (DCs) resulting in greater priming of CD8(+) T cell immunity...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819247/delta-inulin-based-adjuvants-promote-the-generation-of-polyfunctional-cd4-t-cell-responses-and-protection-against-mycobacterium-tuberculosis-infection
#14
Claudio Counoupas, Rachel Pinto, Gayathri Nagalingam, Warwick J Britton, Nikolai Petrovsky, James A Triccas
There is an urgent need for the rational design of safe and effective vaccines to protect against chronic bacterial pathogens such as Mycobacterium tuberculosis. Advax™ is a novel adjuvant based on delta inulin microparticles that enhances immunity with a minimal inflammatory profile and has entered human trials to protect against viral pathogens. In this report we determined if Advax displays broad applicability against important human pathogens by assessing protective immunity against infection with M. tuberculosis...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28808938/advances-in-vaccines-to-prevent-viral-respiratory-illnesses-in-children
#15
Aleisha J Anderson, Tom L Snelling, Hannah C Moore, Christopher C Blyth
Childhood vaccination has played a critical role in the reduction of morbidity and mortality from communicable diseases, including specific respiratory pathogens. Acute lower respiratory infection (ALRI) of both bacterial and viral aetiology continues to impact global child health. Key bacterial pathogens including Streptococcus pneumoniae and Haemophilus influenza type b are specifically targeted with current vaccination programmes, while at present there are less effective strategies for the prevention of viral disease...
August 14, 2017: Paediatric Drugs
https://www.readbyqxmd.com/read/28807627/measles-immunity-gaps-and-the-progress-towards-elimination-a-multi-country-modelling-analysis
#16
Filippo Trentini, Piero Poletti, Stefano Merler, Alessia Melegaro
BACKGROUND: The persistent circulation of measles in both low-income and high-income countries requires a better characterisation of present epidemiological trends and existing immunity gaps across different sociodemographic settings. Serological surveys, which provide direct measures of population protection against the infection, are underexploited and often supply fragmentary estimates of population immunity. This study aims to investigate how measles immunity has changed over time across different socioeconomic settings, as a result of demographic changes and past immunisation policies...
August 11, 2017: Lancet Infectious Diseases
https://www.readbyqxmd.com/read/28802754/cost-benefit-analyses-of-supplementary-measles-immunisation-in-the-highly-immunized-population-of-new-zealand
#17
D T S Hayman, J C Marshall, N P French, T E Carpenter, M G Roberts, T Kiedrzynski
As endemic measles is eliminated from countries through increased immunisation, the economic benefits of enhanced immunisation programs may come into question. New Zealand has suffered from outbreaks after measles introductions from abroad and we use it as a model system to understand the benefits of catch up immunisation in highly immunised populations. We provide cost-benefit analyses for measles supplementary immunisation in New Zealand. We model outbreaks based on estimates of the basic reproduction number in the vaccinated population (Rv, the number of secondary infections in a partially immunised population), based on the number of immunologically-naïve people at district and national levels, considering both pre- and post-catch up vaccination scenarios...
August 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28775292/mucosal-vaccination-with-pili-from-group-a-streptococcus-expressed-on-lactococcus-lactis-generates-protective-immune-responses
#18
Jacelyn M S Loh, Natalie Lorenz, Catherine J-Y Tsai, Adrina Hema J Khemlani, Thomas Proft
The human pathogen Group A Streptococcus (GAS) produces pili that are involved in adhesion and colonisation of the host. These surface-exposed pili are immunogenic and therefore represent an attractive target for vaccine development. The pilus is encoded in the genomic region known as the fibronectin-collagen-T-antigen (FCT)-region, of which at least nine different types have been identified. In this study we investigate expressing two of the most common FCT-types (FCT-3 and FCT-4) in the food-grade bacteria Lactococcus lactis for use as a mucosal vaccine...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28774566/correlation-between-anthrax-lethal-toxin-neutralizing-antibody-levels-and-survival-in-guinea-pigs-and-nonhuman-primates-vaccinated-with-the-av7909-anthrax-vaccine-candidate
#19
Vladimir Savransky, Jeffry D Shearer, Melicia R Gainey, Daniel C Sanford, Gloria S Sivko, Gregory V Stark, Na Li, Boris Ionin, Michael J Lacy, Mario H Skiadopoulos
The anthrax vaccine candidate AV7909 is being developed as a next generation vaccine for a post-exposure prophylaxis (PEP) indication against anthrax. AV7909 consists of the Anthrax Vaccine Adsorbed (AVA, BioThrax®) bulk drug substance adjuvanted with the immunostimulatory oligodeoxynucleotide (ODN) compound, CPG 7909. The addition of CPG 7909 to AVA enhances both the magnitude and the kinetics of antibody responses in animals and human subjects, making AV7909 a suitable next-generation vaccine for use in a PEP setting...
September 5, 2017: Vaccine
https://www.readbyqxmd.com/read/28761614/-impact-of-controlled-temperature-chain-ctc-approach-on-immunization-coverage-achieved-during-the-preventive-vaccination-campaign-against-meningitis-a-using-menafrivac-in-togo-in-2014
#20
Dadja Essoya Landoh, Anna-Léa Kahn, Anani Lacle, Kodjovi Adjeoda, Bayaki Saka, Issifou Yaya, Danladi Ibrahim Nassoury, Assima Kalao, Makawa-Sy Makawa, Nsiari-Mueyi Joseph Biey, Andre Bita, Yaovi Temfa Toke, Petit Dörte, Lucile Imboua, Olivier Ronveaux
METHOD: We conducted a survey from 9 to 14 March 2015 (for approximately 3 months) after the end of the vaccination campaign in these four regions. Interviewees were selected using two stages cluster sampling stratified according to the regions. MenAfriVac vaccine in Controlled Temperature Chain (CTC) was used in 10 districts, in Togo. RESULTS: A total of 2707 households were surveyed and 9082 people aged 1-29 years were interviewed. The average age of the individuals surveyed was 11...
2017: Pan African Medical Journal
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