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Vaccines

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https://www.readbyqxmd.com/read/29320408/outer-membrane-vesicle-vaccines-from-biosafe-surrogates-prevent-acute-lethal-glanders-in-mice
#1
Michael H Norris, Mohammad S R Khan, Sunisa Chirakul, Herbert P Schweizer, Apichai Tuanyok
Burkholderia mallei is a host-adapted Gram-negative mammalian pathogen that causes the severe disease glanders. Glanders can manifest as a rapid acute progression or a chronic debilitating syndrome primarily affecting solipeds and humans in close association with infected animals. In USA, B. mallei is classified as one of the most important bacterial biothreat agents. Presently, there is no licensed glanders vaccine available for humans or animals. In this work, outer membrane vesicles (OMVs) were isolated from three attenuated biosafe bacterial strains, Burkholderia pseudomallei Bp82, B...
January 10, 2018: Vaccines
https://www.readbyqxmd.com/read/29303959/influenza-vaccination-rates-among-parents-and-health-care-personnel-in-a-german-neonatology-department
#2
Horst Buxmann, Anne Daun, Sabine Wicker, Rolf Lambert Schlößer
The influenza vaccination is recommended for all German pregnant women and health care personnel (HCP). We are the first to publish vaccination rates of mothers of hospitalized newborns and HCP in neonatal units. Between September 2016 and March 2017, data were collected in our level-III neonatology department in this descriptive multidisciplinary study, using an anonymous questionnaire. As a result, 513 persons were asked to participate, including 330 parents and 183 HCP. We received an 80.3% (412/513) response rate, 87...
January 5, 2018: Vaccines
https://www.readbyqxmd.com/read/29295593/structural-and-immunological-characterization-of-novel-recombinant-momp-based-chlamydial-antigens
#3
Guillermo Madico, Olga Gursky, Jeff Fairman, Paola Massari
Chlamydia is the most common cause of bacterial sexually transmitted infections worldwide. While infections resolve with antibiotic treatment, this is often neglected in women due to frequent asymptomatic infections, leading to disease progression and severe sequelae (pelvic inflammatory disease, ectopic pregnancy, infertility). Development of a vaccine against Chlamydia is crucial. Whole organism-based vaccines have short-lived activity, serovar/subgroup-specific immunity and can cause adverse reactions in vaccinated subjects...
December 25, 2017: Vaccines
https://www.readbyqxmd.com/read/29295563/structural-analysis-and-epitope-prediction-of-mhc-class-1-chain-related-protein-a-for-cancer-vaccine-development
#4
Tayo Alex Adekiya, Raphael Taiwo Aruleba, Sbonelo Khanyile, Priscilla Masamba, Babatunji Emmanuel Oyinloye, Abidemi Paul Kappo
Major histocompatibility complex class 1 chain-related gene sequence A is a polymorphic gene found at about 46.6 kb centromeric to HLA-B. It encodes a transmembrane protein, which is a non-classical human leukocyte antigen whose expression is normally induced by stress conditions like cancer and viral infections. The expression of MIC-A leads to the activation of NKG2D receptors of natural killer and T cells, leading to the generation of innate immune response that can easily eliminate/cleanse tumour cells and other cells that express the protein...
December 25, 2017: Vaccines
https://www.readbyqxmd.com/read/29257056/vaccination-with-combination-dna-and-virus-like-particles-enhances-humoral-and-cellular-immune-responses-upon-boost-with-recombinant-modified-vaccinia-virus-ankara-expressing-human-immunodeficiency-virus-envelope-proteins
#5
Sailaja Gangadhara, Young-Man Kwon, Subbiah Jeeva, Fu-Shi Quan, Baozhong Wang, Bernard Moss, Richard W Compans, Rama Rao Amara, M Abdul Jabbar, Sang-Moo Kang
Heterologous prime boost with DNA and recombinant modified vaccinia virus Ankara (rMVA) vaccines is considered as a promising vaccination approach against human immunodeficiency virus (HIV-1). To further enhance the efficacy of DNA-rMVA vaccination, we investigated humoral and cellular immune responses in mice after three sequential immunizations with DNA, a combination of DNA and virus-like particles (VLP), and rMVA expressing HIV-1 89.6 gp120 envelope proteins (Env). DNA prime and boost with a combination of VLP and DNA vaccines followed by an rMVA boost induced over a 100-fold increase in Env-specific IgG antibody titers compared to three sequential immunizations with DNA and rMVA...
December 19, 2017: Vaccines
https://www.readbyqxmd.com/read/29236069/a-portrait-of-the-sialyl-glycan-receptor-specificity-of-the-h10-influenza-virus-hemagglutinin-a-picture-of-an-avian-virus-on-the-verge-of-becoming-a-pandemic
#6
REVIEW
Elena K Schneider, Jian Li, Tony Velkov
Pandemic influenza is a constant global threat to human health. In particular, the pandemic potential of novel avian influenza viruses such as the H10N7 and H10N8 avian strains, which recently managed to cross the species barrier from birds to humans, are always of great concern as we are unlikely to have any prior immunity. Human and avian isolates of H10 influenza display the ability to rapidly adapt to replication in mammalian hosts. Fortunately, so far there is no evidence of efficient human-to-human transmission of any avian influenza virus...
December 13, 2017: Vaccines
https://www.readbyqxmd.com/read/29232932/adjuvant-probiotics-and-the-intestinal-microbiome-enhancing-vaccines-and-immunotherapy-outcomes
#7
REVIEW
Luis Vitetta, Emma Tali Saltzman, Michael Thomsen, Tessa Nikov, Sean Hall
Immune defence against pathogenic agents comprises the basic premise for the administration of vaccines. Vaccinations have hence prevented millions of infectious illnesses, hospitalizations and mortality. Acquired immunity comprises antibody and cell mediated responses and is characterized by its specificity and memory. Along a similar congruent yet diverse mode of disease prevention, the human host has negotiated from in utero and at birth with the intestinal commensal bacterial cohort to maintain local homeostasis in order to achieve immunological tolerance in the new born...
December 11, 2017: Vaccines
https://www.readbyqxmd.com/read/29232837/a-burkholderia-pseudomallei-outer-membrane-vesicle-vaccine-provides-cross-protection-against-inhalational-glanders-in-mice-and-non-human-primates
#8
Sarah M Baker, Christopher J H Davitt, Natalya Motyka, Nicole L Kikendall, Kasi Russell-Lodrigue, Chad J Roy, Lisa A Morici
Burkholderia mallei is a Gram-negative, non-motile, facultative intracellular bacillus and the causative agent of glanders, a highly contagious zoonotic disease. B. mallei is naturally resistant to multiple antibiotics and there is concern for its potential use as a bioweapon, making the development of a vaccine against B. mallei of critical importance. We have previously demonstrated that immunization with multivalent outer membrane vesicles (OMV) derived from B. pseudomallei provide significant protection against pneumonic melioidosis...
December 9, 2017: Vaccines
https://www.readbyqxmd.com/read/29211052/maternal-vaccination-immunization-of-sows-during-pregnancy-against-etec-infections
#9
REVIEW
Jose Matías, Melibea Berzosa, Yadira Pastor, Juan M Irache, Carlos Gamazo
The immunology of pregnancy is an evolving consequence of multiple reciprocal interactions between the maternal and the fetal-placental systems. The immune response must warrant the pregnancy outcome (including tolerance to paternal antigens), but at the same time, efficiently respond to pathogenic challenges. Enterotoxigenic Escherichia coli (ETEC) strains are a major cause of illness and death in neonatal and recently weaned pigs. This review aims to give an overview of the current rationale on the maternal vaccination strategies for the protection of the newborn pig against ETEC...
December 6, 2017: Vaccines
https://www.readbyqxmd.com/read/29210987/prophylactic-sublingual-immunization-with-mycobacterium-tuberculosis-subunit-vaccine-incorporating-the-natural-killer-t-cell-agonist-alpha-galactosylceramide-enhances-protective-immunity-to-limit-pulmonary-and-extra-pulmonary-bacterial-burden-in-mice
#10
Arshad Khan, Shailbala Singh, Gloria Galvan, Chinnaswamy Jagannath, K Jagannadha Sastry
Infection by Mycobacterium tuberculosis (Mtb) remains a major global concern and the available Bacillus Calmette-Guerin (BCG) vaccine is poorly efficacious in adults. Therefore, alternative vaccines and delivery strategies focusing on Mtb antigens and appropriate immune stimulating adjuvants are needed to induce protective immunity targeted to the lungs, the primary sites of infections and pathology. We present here evidence in support of mucosal vaccination by the sublingual route in mice using the subunit Mtb antigens Ag85B and ESAT-6 adjuvanted with the glycolipid alpha-galactosylceramide (α-GalCer), a potent natural killer T (NKT) cell agonist...
December 6, 2017: Vaccines
https://www.readbyqxmd.com/read/29207516/equine-vaccines-how-when-and-why-report-of-the-vaccinology-session-french-equine-veterinarians-association-2016-reims
#11
Romain Paillot, Christel Marcillaud Pitel, Xavier D'Ablon, Stéphane Pronost
To date, vaccination is one of the most efficient methods of prevention against equine infectious diseases. The vaccinology session, which was organised during the annual meeting of the French Equine Veterinarians Association (AVEF) at Reims (France) in 2016, aimed to approach three subjects of importance for the equine industry. Vaccination against three major equine diseases were used as examples: equine influenza (equine influenza virus), rhinopneumonitis (equine herpes virus 1/4), and tetanus (Clostridium tetani neuro-toxin)...
December 4, 2017: Vaccines
https://www.readbyqxmd.com/read/29207503/detection-of-nuclear-protein-profile-changes-by-human-metapneumovirus-m2-2-protein-using-quantitative-differential-proteomics
#12
Yuping Ren, Eunjin Choi, Ke Zhang, Yu Chen, Sha Ye, Xiaoling Deng, Kangling Zhang, Xiaoyong Bao
Human metapneumovirus (hMPV) is a leading cause of lower respiratory infection in pediatric populations globally. This study examined proteomic profile changes in A549 cells infected with hMPV and two attenuated mutants with deleted PDZ domain-binding motif(s) in the M2-2 protein. These motifs are involved in the interruption of antiviral signaling, namely the interaction between the TNF receptor associated factor (TRAF) and mitochondrial antiviral-signaling (MAVS) proteins. The aim of this study was to provide insight into the overall and novel impact of M2-2 motifs on cellular responses via an unbiased comparison...
December 3, 2017: Vaccines
https://www.readbyqxmd.com/read/29125532/a-new-whooping-cough-vaccine-that-may-prevent-colonization-and-transmission
#13
LETTER
Michael J Brennan
This article is a Letter to the Editor. The major purpose of this Letter is to highlight the development of a new genetically altered whooping cough vaccine. Recently a baboon model has been used to show that this next generation pertussis vaccine can prevent colonization, as well as disease, and elicit antibodies against major pertussis antigens. Two phase I clinical trials have been performed, showing that this new vaccine is safe in humans, and a phase II trial will be performed in the US in 2018.
November 10, 2017: Vaccines
https://www.readbyqxmd.com/read/29117102/mechanisms-of-entry-and-endosomal-pathway-of-african-swine-fever-virus
#14
REVIEW
Elena G. Sánchez, Daniel Pérez-Núñez, Yolanda Revilla
African Swine Fever Virus (ASFV) causes a serious swine disease that is endemic in Africa and Sardinia and presently spreading in Russia and neighboring countries, including Poland and recently, the Czech Republic. This uncontrolled dissemination is a world-wide threat, as no specific protection or vaccine is available. ASFV is a very complex icosahedral, enveloped virus about 200 nm in diameter, which infects several members of pigs. The virus enters host cells by receptor-mediated endocytosis that depends on energy, vacuolar pH and temperature...
November 8, 2017: Vaccines
https://www.readbyqxmd.com/read/29113042/ph-responsive-micelle-based-cytoplasmic-delivery-system-for-induction-of-cellular-immunity
#15
Eiji Yuba, Naoki Sakaguchi, Yuhei Kanda, Maiko Miyazaki, Kazunori Koiwai
(1) Background: Cytoplasmic delivery of antigens is crucial for the induction of cellular immunity, which is an important immune response for the treatment of cancer and infectious diseases. To date, fusogenic protein-incorporated liposomes and pH-responsive polymer-modified liposomes have been used to achieve cytoplasmic delivery of antigen via membrane rupture or fusion with endosomes. However, a more versatile cytoplasmic delivery system is desired for practical use. For this study, we developed pH-responsive micelles composed of dilauroyl phosphatidylcholine (DLPC) and deoxycholic acid and investigated their cytoplasmic delivery performance and immunity-inducing capability...
November 4, 2017: Vaccines
https://www.readbyqxmd.com/read/29099809/impact-of-the-respiratory-microbiome-on-host-responses-to-respiratory-viral-infection
#16
REVIEW
Maxime Pichon, Bruno Lina, Laurence Josset
Viruses are responsible for most of both upper and lower acute respiratory infections (ARIs). The microbiome-the ecological community of microorganisms sharing the body space, which has gained considerable interest over the last decade-is modified in health and disease states. Even if most of these disturbances have been previously described in relation to chronic disorders of the gastrointestinal microbiome, after a short reminder of microbiome characteristics and methods of characterization, this review will describe the impact of the microbiome (mainly respiratory) on host responses to viral ARIs...
November 3, 2017: Vaccines
https://www.readbyqxmd.com/read/29088098/neutralization-of-human-cytomegalovirus-entry-into-fibroblasts-and-epithelial-cells
#17
REVIEW
Felix Wussow, Flavia Chiuppesi, Heidi Contreras, Don J Diamond
Human cytomegalovirus (HCMV) is a leading cause of permanent birth defects, highlighting the need to develop an HCMV vaccine candidate. However, HCMV vaccine development is complicated by the varying capacity of neutralizing antibodies (NAb) to interfere in vitro with the HCMV entry routes mediating infection of fibroblast (FB) and epithelial cells (EC). While HCMV infection of FB and EC requires glycoprotein complexes composed of gB and gH/gL/gO, EC infection depends additionally on the envelope pentamer complex (PC) composed of gH, gL, UL128, UL130 and UL131A...
October 31, 2017: Vaccines
https://www.readbyqxmd.com/read/29072624/an-archaeosome-adjuvanted-vaccine-and-checkpoint-inhibitor-therapy-combination-significantly-enhances-protection-from-murine-melanoma
#18
Felicity C Stark, Risini D Weeratna, Lise Deschatelets, Komal Gurnani, Renu Dudani, Michael J McCluskie, Lakshmi Krishnan
Archaeosomes constitute archaeal lipid vesicle vaccine adjuvants that evoke a strong CD8⁺ T cell response to antigenic cargo. Therapeutic treatment of murine B16-ovalbumin (B16-OVA) melanoma with archaeosome-OVA eliminates small subcutaneous solid tumors; however, they eventually resurge despite an increased frequency of circulating and tumor infiltrating OVA-CD8⁺ T cells. Herein, a number of different approaches were evaluated to improve responses, including dose number, interval, and the combination of vaccine with checkpoint inhibitors...
October 26, 2017: Vaccines
https://www.readbyqxmd.com/read/29053596/elucidating-the-role-of-host-long-non-coding-rna-during-viral-infection-challenges-and-paths-forward
#19
REVIEW
David J Lemler, Hayden N Brochu, Fang Yang, Erin A Harrell, Xinxia Peng
Research over the past decade has clearly shown that long non-coding RNAs (lncRNAs) are functional. Many lncRNAs can be related to immunity and the host response to viral infection, but their specific functions remain largely elusive. The vast majority of lncRNAs are annotated with extremely limited knowledge and tend to be expressed at low levels, making ad hoc experimentation difficult. Changes to lncRNA expression during infection can be systematically profiled using deep sequencing; however, this often produces an intractable number of candidate lncRNAs, leaving no clear path forward...
October 20, 2017: Vaccines
https://www.readbyqxmd.com/read/28994712/improving-influenza-vaccination-rate-among-primary-healthcare-workers-in-qatar
#20
Khalid H Elawad, Elmoubasher A Farag, Dina A Abuelgasim, Maria K Smatti, Hamad E Al-Romaihi, Mohammed Al Thani, Hanan Al Mujalli, Zienab Shehata, Merin Alex, Asmaa A Al Thani, Hadi M Yassine
The purpose of this study was to improve influenza vaccination, and determine factors influencing vaccine declination among health care workers (HCW) in Qatar. We launched an influenza vaccination campaign to vaccinate around 4700 HCW in 22 Primary Health Care Corporation (PHCC) centers in Qatar between 1st and 15th of November, 2015. Our target was to vaccinate 60% of all HCW. Vaccine was offered free of charge at all centers, and information about the campaign and the importance of influenza vaccination was provided to employees through direct communication, emails, and social media networks...
October 10, 2017: Vaccines
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