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Vaccine AND side effects

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https://www.readbyqxmd.com/read/28803053/optimized-transitory-ectopic-expression-of-promastigote-surface-antigen-protein-in-nicotiana-benthamiana-a-potential-anti-leishmaniasis-vaccine-candidate
#1
Séverine Lacombe, Martine Bangratz, Jean-Paul Brizard, Elodie Petitdidier, Julie Pagniez, Drissa Sérémé, Jean-Loup Lemesre, Christophe Brugidou
In recent years, plants have been shown to be an efficient alternative expression system for high-value pharmaceuticals such as vaccines. However, constitutive expression of recombinant protein remains uncertain on their level of production and biological activity. To overcome these problems, transitory expression systems have been developed. Here, a series of experiments were performed to determine the most effective conditions to enhance vaccine antigen transient accumulation in Nicotiana benthamiana leaves using the promastigote surface antigen (PSA) from the parasitic protozoan Leishmania infantum...
August 10, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28794055/effect-of-vaccine-elicited-antibodies-on-colonization-of-neisseria-meningitidis-serogroup-b-and-c-strains-in-a-human-bronchial-epithelial-cell-culture-model
#2
Vianca Vianzon, Beate Illek, Gregory R Moe
Capsular polysaccharide-protein conjugate vaccines protect individuals from invasive disease and decrease carriage, which reduces spread of the organism in the population. In contrast, antibodies elicited by plain polysaccharide or protein antigen-based meningococcal (Men) vaccines have little or no effect on decreasing carriage. In this study, we investigated the mechanism by which vaccine-induced human IgG antibodies affect colonization by serogroup B (MenB) or C (MenC) strains using a human bronchial epithelial cell culture model (16HBE14o-)...
August 9, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28776523/screening-of-health-care-workers-for-latent-tuberculosis-infection-in-a-tertiary-care-hospital
#3
Anand Bimari Janagond, Vithiya Ganesan, G S Vijay Kumar, Arunagiri Ramesh, Prem Anand, M Mariappan
BACKGROUND: Health-care workers (HCWs) are at increased risk of acquiring tuberculosis (TB) than the general population. While national-level data on the burden of TB in general population is available from reliable sources, nationally representative data on latent tuberculosis infection (LTBI) burden in HCWs in the high burden countries is lacking. METHODS: A prospective study was carried out to assess the risk of TB infection among HCWs who directly engage in medical duties...
July 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28770523/healthcare-professionals-knowledge-of-influenza-and-influenza-vaccination-results-of-a-national-survey-in-poland
#4
Ernest Kuchar, Kamila Ludwikowska, Adam Antczak, Aneta Nitsch-Osuch
In Poland, the seasonal influenza vaccination rate is just barely 3% which may be related to the unsatisfactory knowledge of influenza among healthcare professionals, poor recognition of the benefits of influenza immunization and the fear of side effects. To address these issues, we surveyed healthcare professionals through an online questionnaire consisting of 18 closed-ended items. The questionnaire was completed by 495 healthcare professionals, mostly physicians (83%). The results revealed gaps in the knowledge concerning influenza diagnosis, complications, risk groups, and prognostic factors...
August 3, 2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28766409/phase-1-healthy-volunteer-willingness-to-participate-and-enrollment-preferences
#5
Stephanie C Chen, Ninet Sinaii, Gabriella Bedarida, Mark A Gregorio, Ezekiel Emanuel, Christine Grady
BACKGROUND/AIMS: Healthy volunteers in phase 1 clinical trials contribute to the development of safe drugs and other biologics and accept risks and burdens without anticipated health benefits from participation. Although emerging data have shown that healthy volunteers are influenced by risk, some still worry that financial incentives lead them to take on unreasonable risk. Yet little is known about healthy volunteers' preferences and how they make choices about enrolling in research studies...
August 1, 2017: Clinical Trials: Journal of the Society for Clinical Trials
https://www.readbyqxmd.com/read/28758854/3d-qsar-pharmacophore-based-virtual-screening-molecular-docking-and-molecular-dynamics-simulation-toward-identifying-lead-compounds-for-ns2b-ns3-protease-inhibitors
#6
Pei H Luo, Xuan R Zhang, Lan Huang, Lun Yuan, Xang Z Zhou, X Gao, Ling S Li
NS2B-NS3 protease has been identified to serve as lead drug design target due to its significant role in West Nile viral (WNV) and dengue virus (DENV) reproduction and replication. There are currently no approved chemotherapeutic drugs and effective vaccines to inhibit DENV and WNV infections. In this work, 3D-QSAR pharmacophore model has been developed to discover potential inhibitory candidates. Validation through Fischer's model and decoy test indicate that the developed 3D pharmacophore model is highly predictive for DENV inhibitors, which was then employed to screen ZINC chemical library to obtain reasonable hits...
July 31, 2017: Journal of Receptor and Signal Transduction Research
https://www.readbyqxmd.com/read/28749996/misinformation-lingers-in-memory-failure-of-three-pro-vaccination-strategies
#7
Sara Pluviano, Caroline Watt, Sergio Della Sala
People's inability to update their memories in light of corrective information may have important public health consequences, as in the case of vaccination choice. In the present study, we compare three potentially effective strategies in vaccine promotion: one contrasting myths vs. facts, one employing fact and icon boxes, and one showing images of non-vaccinated sick children. Beliefs in the autism/vaccines link and in vaccines side effects, along with intention to vaccinate a future child, were evaluated both immediately after the correction intervention and after a 7-day delay to reveal possible backfire effects...
2017: PloS One
https://www.readbyqxmd.com/read/28746348/adolescent-values-for-immunisation-programs-in-australia-a-discrete-choice-experiment
#8
Bing Wang, Gang Chen, Julie Ratcliffe, Hossein Haji Ali Afzali, Lynne Giles, Helen Marshall
OBJECTIVES: The importance of adolescent engagement in health decisions and public health programs such as immunisation is becoming increasingly recognised. Understanding adolescent preferences and further identifying barriers and facilitators for immunisation acceptance is critical to the success of adolescent immunisation programs. This study applied a discrete choice experiment (DCE) to assess vaccination preferences in adolescents. METHODS: This study was conducted as a cross-sectional, national online survey in Australian adolescents...
2017: PloS One
https://www.readbyqxmd.com/read/28738755/qsar-dft-and-molecular-modeling-studies-of-peptides-from-hiv-1-to-describe-their-recognition-properties-by-mhc-i
#9
S Andrade-Ochoa, J García-Machorro, Martiniano Bello, L M Rodríguez-Valdez, C A Flores-Sandoval, J Correa-Basurto
Human immunodeficiency virus type-1 (HIV-1) has infected more than 40 million people around the world. HIV-1 treatment still has several side effects, and the development of a vaccine, which is another potential option for decreasing human infections, has faced challenges. This work presents a computational study that includes a quantitative structure activity relationship (QSAR) using density functional theory for reported peptides to identify the principal quantum mechanics descriptors related to peptide activity...
July 25, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28728074/no-pain-no-gain-adjuvant-effects-of-alum-and-monophosphoryl-lipid-a-in-pertussis-and-hpv-vaccines
#10
REVIEW
Thomas C Mitchell, Carolyn R Casella
Development of non-infectious subunit vaccines is hampered by a slow pipeline of new adjuvants to replace or enhance alum in part because expectations of safety are high. Transient vaccine side effects are not clinical priorities because they cause no lasting harm and vaccine development has appropriately been focused on avoidance of serious adverse events. As a result, surprisingly little is known about the extent to which side effects caused by a vaccine's reactogencicity are predictive of successful immunization outcomes...
July 17, 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/28727722/an-attenuated-shigella-mutant-lacking-the-rna-binding-protein-hfq-provides-cross-protection-against-shigella-strains-of-broad-serotype
#11
Jiro Mitobe, Ritam Sinha, Soma Mitra, Dhrubajyoti Nag, Noriko Saito, Ken Shimuta, Nobuo Koizumi, Hemanta Koley
Few live attenuated vaccines protect against multiple serotypes of bacterial pathogen because host serotype-specific immune responses are limited to the serotype present in the vaccine strain. Here, immunization with a mutant of Shigella flexneri 2a protected guinea pigs against subsequent infection by S. dysenteriae type 1 and S. sonnei strains. This deletion mutant lacked the RNA-binding protein Hfq leading to increased expression of the type III secretion system via loss of regulation, resulting in attenuation of cell viability through repression of stress response sigma factors...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28723970/barriers-and-facilitators-of-hiv-vaccine-and-prevention-study-participation-among-young-black-msm-and-transwomen-in-new-york-city
#12
Sharise Richardson, Pich Seekaew, Beryl Koblin, Tasha Vazquez, Vijay Nandi, Hong-Van Tieu
BACKGROUND: Black men who have sex with men (MSM), and Transwomen (TW) shoulder disproportionate burden of HIV. However, they are unrepresented in HIV vaccine trials. We investigated the perceptions of that factors associated with HIV vaccine trials participation among Black MSM and TW in New York. METHODS: Self-administered online questionnaires were administered to 18-29 years of NYC residents who identified as Black MSM and TW, assessing demographics, awareness and willingness to participate in HIV vaccine trials, barriers and facilitators associated with willingness, and sexual behaviors...
2017: PloS One
https://www.readbyqxmd.com/read/28721859/immunogenicity-and-safety-of-the-inactivated-hepatitis-a-vaccine-in-children-with-juvenile-idiopathic-arthritis-on-methotrexate-treatment-a-matched-case-control-study
#13
Despoina N Maritsi, Susan E Coffin, Ioanna Argyri, George Vartzelis, Nick Spyridis, Maria N Tsolia
OBJECTIVES: To describe the immunogenicity and side effects of immunisation against hepatitis A virus (HAV) in JIA patients on methotrexate treatment, who have not been previously exposed to HAV. METHODS: Case-control study performed in JIA patients and healthy controls matched on age and gender. The subjects received two doses of inactivated anti-HAV vaccine (720 mIU/ml) intramuscularly at 0 and 6 months. Seroconversion, seroprotection rates and anti-HAV-IgG titres were measured at 1, 7 and 18 months...
July 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28718586/-adverse-events-of-biologic-therapies
#14
Gregory Fleury, Cem Gabay
Biological therapies have revolutionized the management and the outcome of patients with inflammatory rheumatic diseases. The prescription and the number of patients under biotherapies have greatly increased. Unfortunately, these treatments are occasionally accompanied by side effects usually reversible upon treatment discontinuation. Some are preventable or can be reduced, including through the screening and prevention (tuberculosis screening, vaccination…). It is important to be aware of these different side effects to adapt the prescription of biologics according to the patient's profile (history of infection, malignancy, heart failure…)...
March 8, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28713023/an-extended-mathematical-model-of-tumor-growth-and-its-interaction-with-the-immune-system-to-be-used-for-developing-an-optimized-immunotherapy-treatment-protocol
#15
Milad Qomlaqi, Fariba Bahrami, Maryam Ajami, Jamshid Hajati
BACKGROUND: Chemotherapy is usually known as the main modality for cancer treatment. Nevertheless, most of chronic cancers could not be treated with chemotherapy alone. Immunotherapy is a new modality for cancer treatment that is effective for early stages of cancer and it has fewer side effects compared to chemotherapy, specifically for those types of cancer that are resistant to it. METHOD: This work presents an extended mathematical model to depict interactions between cancerous and adaptive immune system in mouse...
July 14, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/28710608/vaccine-platform-recombinant-measles-virus
#16
REVIEW
Michael D Mühlebach
The classic development of vaccines is lengthy, tedious, and may not necessarily be successful as demonstrated by the case of HIV. This is especially a problem for emerging pathogens that are newly introduced into the human population and carry the inherent risk of pandemic spread in a naïve population. For such situations, a considerable number of different platform technologies are under development. These are also under development for pathogens, where directly derived vaccines are regarded as too complicated or even dangerous due to the induction of inefficient or unwanted immune responses causing considerable side-effects as for dengue virus...
July 14, 2017: Virus Genes
https://www.readbyqxmd.com/read/28705615/transcutaneous-immunotherapy-of-pollinosis-using-solid-in-oil-nanodispersions-loaded-with-t-cell-epitope-peptides
#17
Qingliang Kong, Momoko Kitaoka, Rie Wakabayashi, Noriho Kamiya, Masahiro Goto
Pollinosis, a typical seasonal allergy, is a serious public health problem. Limited numbers of patients receive curative immunotherapy instead of symptomatic therapy; however, there are still some concerns about the inconvenience and side effects of subcutaneous injections and sublingual administration caused by immunotherapy. Here, we propose a simple and safe transcutaneous immunotherapy using solid-in-oil (S/O) nanodispersions loaded with vaccine T cell epitope peptides derived from pollen allergen. S/O nanodispersions are oil-based dispersions of antigens coated with hydrophobic surfactants...
July 10, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28705213/the-therapeutic-landscape-of-hiv-1-via-genome-editing
#18
REVIEW
Alexander Kwarteng, Samuel Terkper Ahuno, Godwin Kwakye-Nuako
Current treatment for HIV-1 largely relies on chemotherapy through the administration of antiretroviral drugs. While the search for anti-HIV-1 vaccine remain elusive, the use of highly active antiretroviral therapies (HAART) have been far-reaching and has changed HIV-1 into a manageable chronic infection. There is compelling evidence, including several side-effects of ARTs, suggesting that eradication of HIV-1 cannot depend solely on antiretrovirals. Gene therapy, an expanding treatment strategy, using RNA interference (RNAi) and programmable nucleases such as meganuclease, zinc finger nuclease (ZFN), transcription activator-like effector nuclease (TALEN), and clustered regularly interspaced short palindromic repeats/CRISPR-associated proteins (CRISPR-Cas9) are transforming the therapeutic landscape of HIV-1...
July 14, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28704520/a-self-affirmation-exercise-does-not-improve-intentions-to-vaccinate-among-parents-with-negative-vaccine-attitudes-and-may-decrease-intentions-to-vaccinate
#19
Rachael D Reavis, Jacob B Ebbs, Adaobi K Onunkwo, L Mariah Sage
Two studies investigated the effectiveness of a self-affirmation exercise on vaccine safety beliefs and intent to vaccinate future children. In Study 1, a sample of 585 parents with at least one child under the age of 18 in the home participated through Amazon's MTurk. Participants were randomly assigned to one of four conditions in a 2 x 2 design. Participants read either correcting information refuting a link between the measles, mumps, and rubella (MMR) vaccine and autism or a control passage about bird feeding...
2017: PloS One
https://www.readbyqxmd.com/read/28696530/immunogenicity-and-safety-of-single-dose-13-valent-pneumococcal-conjugate-vaccine-in-pediatric-and-adolescent-oncology-patients
#20
Te-Yu Hung, Rishi S Kotecha, Christopher C Blyth, Sarah K Steed, Ruth B Thornton, Anne L Ryan, Catherine H Cole, Peter C Richmond
BACKGROUND: Children receiving immunosuppressive treatment for cancer are at high risk for invasive pneumococcal disease. The 13-valent pneumococcal conjugate vaccine (PCV13) can prevent pneumococcal disease in healthy children; however, there is an absence of literature regarding the benefit of PCV13 in immunocompromised children with cancer. METHODS: A prospective, open-label cohort study recruited children between ages 1 and 18 years who were receiving active immunosuppressive therapy (AIT) or were within 12 months after completing immunosuppressive therapy (CIT)...
July 11, 2017: Cancer
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