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https://www.readbyqxmd.com/read/29216358/rapid-protective-effects-of-early-bcg-on-neonatal-mortality-among-low-birth-weight-boys-observations-from-randomised-trials
#1
Sofie Biering-Sørensen, Kristoffer Jarlov Jensen, Ivan Monterio, Henrik Ravn, Peter Aaby, Christine Stabell Benn
Background: Three randomised trials (RCTs) in low-weight (LW, <2.5 kg) infants have shown that Bacille Calmette-Guérin (BCG) vaccine non-specifically reduces all-cause mortality in the neonatal period. Methods: Using data from three RCTs of early BCG (N=6,583) we examined potential sex-differences in the timing of the mortality reduction in the neonatal period, presenting meta-estimates of the main outcome mortality rate ratios (MRR) for BCG-vaccinated and controls...
December 5, 2017: Journal of Infectious Diseases
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
#2
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/29204139/mycobacterium-tuberculosis-latent-antigen-rv2029c-from-the-multistage-dna-vaccine-a39-drives-th1-responses-via-tlr-mediated-macrophage-activation
#3
Haibo Su, Shengling Zhu, Lin Zhu, Cong Kong, Qi Huang, Zhi Zhang, Honghai Wang, Ying Xu
Targeting of Mycobacterium tuberculosis (MTB) latent antigens comprises a crucial strategy for the development of alternative tuberculosis (TB) vaccine(s) that protects against TB reactivation. Here, we generated a multistage DNA vaccine, A39, containing the early antigens Ag85A and Rv3425 as well as the latency-associated protein Rv2029c, which conferred protective immunity in a pre-exposure mouse model. Moreover, administration of the A39 vaccination after MTB exposure inhibited reactivation and resulted in significantly lower bacterial loads in the lungs and spleen of mice, compared to those in the control population...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29201375/children-with-lymphadenitis-associated-with-bacillus-calmette-gu%C3%A3-rin-bcg-vaccination-do-not-experience-more-infections-when-compared-with-bcg-vaccinated-children-without-lymphadenitis-a-three-years-paired-cohort-in-mexico
#4
Enrique Chacon-Cruz, Jorge Luis Arellano-Estrada, Erika Lopatynsky-Reyes, Jorge Alvelais-Palacios, Chandra Becka
Objectives: Vaccination against tuberculosis with live-attenuated Bacillus Calmette-Guérin (BCG) is widely used even though its effectiveness is controversial. BCG-lymphadenitis (BCG-LA) is its most common complication. Some studies have proposed that BCG-LA can be associated with primary immunodeficiencies (PIs). This study's aim is to see whether patients who developed BCG-LA (named as 'LA') developed more infections than BCG-vaccinated children without BCG-LA (named as 'NON-LA'). Methods: From January 2009 to April 2014, 31 LA children were seen at the outpatient clinic of the General Hospital of Tijuana, Mexico...
August 2017: Therapeutic Advances in Vaccines
https://www.readbyqxmd.com/read/29185899/vaccination-coverage-and-factors-associated-with-adherence-to-the-vaccination-schedule-in-young-children-of-a-rural-area-in-burkina-faso
#5
Moubassira Kagoné, Maurice Yé, Eric Nébié, Ali Sie, Anja Schoeps, Heiko Becher, Olaf Muller, Ane Baerent Fisker
BACKGROUND: Vaccination is an important tool for reducing infectious disease morbidity and mortality. In the past, less than 80% of children 12-23 months of age were fully immunized in Burkina Faso. OBJECTIVES: To describe coverage and assess factors associated with adherence to the vaccination schedule in rural area Burkina Faso. METHODS: The study population was extracted from the Nouna Health and Demographic surveillance system cohort...
2017: Global Health Action
https://www.readbyqxmd.com/read/29182688/interferon-gamma-release-assay-for-the-diagnosis-of-latent-tuberculosis-infection-a-latent-class-analysis
#6
Tan N Doan, Damon P Eisen, Morgan T Rose, Andrew Slack, Grace Stearnes, Emma S McBryde
BACKGROUND: Accurate diagnosis and subsequent treatment of latent tuberculosis infection (LTBI) is essential for TB elimination. However, the absence of a gold standard test for diagnosing LTBI makes assessment of the true prevalence of LTBI and the accuracy of diagnostic tests challenging. Bayesian latent class models can be used to make inferences about disease prevalence and the sensitivity and specificity of diagnostic tests using data on the concordance between tests. We performed the largest meta-analysis to date aiming to evaluate the performance of tuberculin skin test (TST) and interferon-gamma release assays (IGRAs) for LTBI diagnosis in various patient populations using Bayesian latent class modelling...
2017: PloS One
https://www.readbyqxmd.com/read/29167460/early-vaccination-protects-against-childhood-leukemia-a-systematic-review-and-meta-analysis
#7
Mostafa Ebraheem Morra, Nguyen Dang Kien, Ahmed Elmaraezy, Omar Ayman M Abdelaziz, Ahmed Lotfy Elsayed, Oday Halhouli, Ahmed Mosaad Montasr, Tran Le-Huy Vu, Chau Ho, Amr Sayed Foly, Anh Phan Phi, Wessam Magdy Abdullah, Marina Mikhail, Elizabeth Milne, Kenji Hirayama, Nguyen Tien Huy
Leukemia is the most commonly diagnosed childhood cancer, although its etiology is still largely unknown. Growing evidence supports a role for infection in the etiology of acute lymphocytic leukemia (ALL), and the involvement of the immune system suggests that vaccination may also play a role. However, the findings presented in the published literature are inconsistent. Therefore, we conducted a PRISMA systematic review and meta-analysis. 14 studies were identified and meta-analyzed. Vaccinations studied comprised Bacillus Calmette-Guérin (BCG) vaccine, Triple vaccine, Hepatitis B vaccine (HBV), Polio, Measles, Rubella, Mumps, trivalent MMR vaccine and Haemophilus influenza type B (HiB) vaccine...
November 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29166972/long-term-sex-differential-effects-of-neonatal-vitamin-a-supplementation-on-in-vitro-cytokine-responses
#8
Kristoffer J Jensen, Mia J Søndergaard, Andreas Andersen, Cesario Martins, Christian Erikstrup, Peter Aaby, Katie L Flanagan, Christine Stabell Benn
High-dose vitamin A supplementation (VAS) may affect mortality to infectious diseases in a sex-differential manner. Here, we analysed the long-term immunological effects of neonatal vitamin A supplementation (NVAS) in 247 children, who had been randomly allocated to 50 000 or 25 000 IU vitamin A (15mg and 7·5mg retinol equivalents, respectively) or placebo at birth. At 4-6 months of age, we assessed bacille Calmette-Guérin (BCG) scarification, and we analysed in vitro responses of TNF-α, IL-5, IL-10, IL-13 and IFN-γ in whole blood stimulations to phytohaemagglutinin (PHA), purified protein derivative (PPD), tetanus toxoid and lipopolysaccharide...
November 23, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/29164082/acute-septic-arthritis-of-the-knee-caused-by-kingella-kingae-in-a-5-year-old-cameroonian-boy
#9
Nawal El Houmami, Dimitri Ceroni, Karine Codjo Seignon, Jean-Christophe Pons, Cédric Lambert, Guillaume André Durand, Philippe Minodier, Léopold Lamah, Philippe Bidet, Jacques Schrenzel, Didier Raoult, Pierre-Edouard Fournier
Kingella kingae is an important cause of invasive infections in young children from Western countries. Although increasing reports indicate that this organism is the leading agent of bone and joint infections in early childhood, data on K. kingae infections from resource-limited settings are scarce, and none has yet been reported in Africa. We herein report the diagnostic and epidemiological investigations of the first case of K. kingae arthritis identified in a child from sub-Saharan Africa. A 5-year-old Cameroonian boy presented with a sudden painful limp which appeared in the course of a mild rhinopharyngitis...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/29163649/immunopathological-evaluation-of-recombinant-mycobacterial-antigen-hsp65-expressed-in-lactococcus-lactis-as-a-novel-vaccine-candidate
#10
J C Herrera Ramírez, A Ch De la Mora, A De la Mora Valle, G Lopez-Valencia, R M B Hurtado, T B Rentería Evangelista, J L Rodríguez Castillo, A Rodríguez Gardea, S D Gómez Gómez, G E Medina-Basulto
Bovine tuberculosis (TBB) is a zoonotic disease distributed worldwide and is of great importance for public health and the livestock industry. Several experimental vaccines against this disease have been evaluated in recent years, yielding varying results. An example is the Bacillus Calmette-Guérin (BCG) vaccine, which has been used extensively in humans and tested in cattle showing mixed results related to protection (0-80%) against Mycobacterium bovis. In this study, we used the food-grade bacterium Lactococcus lactis as an expression system for production of mycobacterial protein Hsp65...
2017: Iranian Journal of Veterinary Research
https://www.readbyqxmd.com/read/29162054/-lay-epidemiology-an-important-factor-in-danish-parents-decision-of-whether-to-allow-their-child-to-receive-a-bcg-vaccination-a-qualitative-exploration-of-parental-perspective
#11
Gitte Thybo Pihl, Helle Johannessen, Jette Ammentorp, Jane Schmidt Jensen, Poul-Erik Kofoed
BACKGROUND: Vaccination is used worldwide to prevent infectious diseases. However, vaccination programmes in western countries face challenges in sustaining high coverage rates. The aim of this study was to explore how parents in Denmark make a decision about whether to allow their child to receive a Bacille Calmette Guerin vaccine at birth for the purpose of achieving non-specific effects on the immune system. METHODS: A total of five focus groups were conducted with expectant mothers and fathers...
November 21, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/29155877/immune-response-profiles-of-calves-following-vaccination-with-live-bcg-and-inactivated-mycobacterium-bovis-vaccine-candidates
#12
E M D L van der Heijden, J Chileshe, J C M Vernooij, C Gortazar, R A Juste, I Sevilla, J E Crafford, V P M G Rutten, A L Michel
Conventional control and eradication strategies for bovine tuberculosis (BTB) face tremendous difficulties in developing countries; countries with wildlife reservoirs, a complex wildlife-livestock-human interface or a lack of veterinary and veterinary public health surveillance. Vaccination of cattle and other species might in some cases provide the only suitable control strategy for BTB, while in others it may supplement existing test-and-slaughter schemes. However, the use of live BCG has several limitations and the global rise of HIV/AIDS infections has furthermore warranted the exploration of inactivated vaccine preparations...
2017: PloS One
https://www.readbyqxmd.com/read/29148853/multi-stage-subunit-vaccines-against-mycobacterium-tuberculosis-an-alternative-to-the-bcg-vaccine-or-a-bcg-prime-boost
#13
Farzad Khademi, Mohammad Derakhshan, Arshid Yousefi-Avarvand, Mohsen Tafaghodi, Saman Soleimanpour
More than two billion people are latently infected with Mycobacterium tuberculosis. Most tuberculosis (TB)-subunit vaccines currently in various stages of clinical trials are designed for prevention of active TB, but not to prevent reactivation of latent TB-infection. Thus, there is an urgent need for an effective multi-stage vaccine based on early-expressed and latently-expressed antigens that prevents both acute and latent infections. Areas covered: Here, we reviewed the published pre-clinical and clinical studies of multi-stage subunit vaccines against TB, and the protective capacities of the vaccines were compared with BCG, either alone or in combination with different vaccine delivery systems/adjuvants...
November 22, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/29147487/a-study-on-the-immune-response-induced-by-a-dna-vaccine-encoding-mtb32c-hbha-antigen-of-mycobacterium-tuberculosis
#14
Roghayeh Teimourpour, Hadi Peeridogaheh, Amir Teimourpour, Mohsen Arzanlou, Zahra Meshkat
Objectives: Tuberculosis (TB) has still remained a global health issue. One third of the world's population is infected with tuberculosis and the current BCG vaccine has low efficiency; hence, it is necessary to develop a new vaccine against TB. The aim of the current study was to evaluate the efficiency of a novel DNA vaccine encoding Mtb32C-HBHA antigen in inducing specific immune responses against Mycobacterium tuberculosis. Materials and Methods: A DNA plasmid vaccine expressing Mtb32C-HBHA fusion protein was constructed and its ability in protein expression was examined by RT-PCR and Western blot methods...
October 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29140925/mobilization-of-cd4-t-lymphocytes-in-inflamed-mucosa-reduces-pain-in-colitis-mice-towards-a-vaccinal-strategy-to-alleviate-inflammatory-visceral-pain
#15
Lilian Basso, Jérôme Boué, Céline Augé, Céline Deraison, Catherine Blanpied, Nicolas Cenac, Philippe Lluel, Nathalie Vergnolle, Gilles Dietrich
T lymphocytes play a pivotal role in endogenous regulation of inflammatory visceral pain. The analgesic activity of T lymphocytes is dependent on their production of opioids, a property acquired upon antigen activation. Accordingly, we investigated whether an active recruitment of T lymphocytes within inflamed colon mucosa via a local vaccinal strategy may counteract inflammation-induced visceral pain in mice. Mice were immunized against ovalbumin (OVA). One month after immunization, colitis was induced by adding 3% (w/v) Dextran Sulfate Sodium (DSS) into drinking water containing either cognate antigen OVA or control antigen BSA for 5 days...
November 13, 2017: Pain
https://www.readbyqxmd.com/read/29124321/vaccine-responses-in-newborns
#16
REVIEW
Anja Saso, Beate Kampmann
Immunisation of the newborn represents a key global strategy in overcoming morbidity and mortality due to infection in early life. Potential limitations, however, include poor immunogenicity, safety concerns and the development of tolerogenicity or hypo-responsiveness to either the same antigen and/or concomitant antigens administered at birth or in the subsequent months. Furthermore, the neonatal immunological milieu is polarised towards Th2-type immunity with dampening of Th1-type responses and impaired humoral immunity, resulting in qualitatively and quantitatively poorer antibody responses compared to older infants...
November 9, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/29123166/a-temperature-sensitive-mycobacterium-paragordonae-induces-enhanced-protective-immune-responses-against-mycobacterial-infections-in-the-mouse-model
#17
Byoung-Jun Kim, Bo-Ram Kim, Yoon-Hoh Kook, Bum-Joon Kim
Recently, we introduced a temperature sensitive Mycobacterium spp., Mycobacterium paragordonae (Mpg). Here, we checked its potential as a candidate for live vaccination against Mycobacterium tuberculosis and Mycobacterium abscessus. Intravenous infections of mice with Mpg led to lower colony forming units (CFUs) compared to infection with BCG, suggesting its usefulness as a live vaccine. The analyses of immune responses indicated that the highly protective immunity elicited by Mpg was dependent on effective dendritic maturation, shift of cytokine patterns and antibody production toward a Th1 phenotype, and enhanced cytotoxic T cell response...
November 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29116634/evolution-and-strain-variation-in-bcg
#18
Abdallah M Abdallah, Marcel A Behr
BCG vaccines were derived by in vitro passage, during the years 1908-1921, at the Pasteur Institute of Lille. Following the distribution of stocks of BCG to vaccine production laboratories around the world, it was only a few decades before different BCG producers recognized that there were variants of BCG, likely due to different passaging conditions in the different laboratories. This ultimately led to the lyophilization of stable BCG products in the 1950s and 1960s, but not before considerable evolution of the different BCG strains had taken place...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29109798/multiplexed-nucleic-acid-programmable-protein-arrays
#19
Xiaobo Yu, Lusheng Song, Brianne Petritis, Xiaofang Bian, Haoyu Wang, Jennifer Viloria, Jin Park, Hoang Bui, Han Li, Jie Wang, Lei Liu, Liuhui Yang, Hu Duan, David N McMurray, Jacqueline M Achkar, Mitch Magee, Ji Qiu, Joshua LaBaer
Rationale: Cell-free protein microarrays display naturally-folded proteins based on just-in-time in situ synthesis, and have made important contributions to basic and translational research. However, the risk of spot-to-spot cross-talk from protein diffusion during expression has limited the feature density of these arrays. Methods: In this work, we developed the Multiplexed Nucleic Acid Programmable Protein Array (M-NAPPA), which significantly increases the number of displayed proteins by multiplexing as many as five different gene plasmids within a printed spot...
2017: Theranostics
https://www.readbyqxmd.com/read/29109725/early-events-of-the-reaction-elicited-by-csf-470-melanoma-vaccine-plus-adjuvants-an-in-vitro-analysis-of-immune-recruitment-and-cytokine-release
#20
María B Pampena, María M Barrio, Estefanía P Juliá, Paula A Blanco, Erika M von Euw, José Mordoh, Estrella Mariel Levy
In a previous work, we showed that CSF-470 vaccine plus bacillus Calmette-Guerin (BCG) and granulocyte macrophage colony-stimulating factor (GM-CSF) as adjuvants resulted in a significant benefit in the distant metastasis-free survival when comparing vaccinated vs. IFN-α2b-treated high-risk cutaneous melanoma patients in a Phase II study. Immune monitoring demonstrated an increase in anti-tumor innate and adaptive immunities of vaccinated patients, with a striking increase in IFN-γ secreting lymphocytes specific for melanoma antigens (Ags)...
2017: Frontiers in Immunology
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