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https://www.readbyqxmd.com/read/27914088/murine-mycobacterium-marinum-infection-as-a-model-for-tuberculosis
#1
Julia Lienard, Fredric Carlsson
Mycobacteria are a major human health problem globally. Regarding tuberculosis the situation is worsened by the poor efficacy of current vaccine regimens and by emergence of drug-resistant strains (Manjelievskaia J et al, Trans R Soc Trop Med Hyg 110: 110, 2016; Pereira et al., Lancet Infect Dis 12:300-306, 2012; http://www.who.int/tb/publications/global_report/en/) undermining both disease-prevention and available treatments. Thus, increased basic understanding of mycobacterial-and particularly Mycobacterium tuberculosis-virulence strategies and pathogenesis is of great importance...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27893809/model-of-selective-and-non-selective-management-of-badgers-meles-meles-to-control-bovine-tuberculosis-in-badgers-and-cattle
#2
Graham C Smith, Richard J Delahay, Robbie A McDonald, Richard Budgey
Bovine tuberculosis (bTB) causes substantial economic losses to cattle farmers and taxpayers in the British Isles. Disease management in cattle is complicated by the role of the European badger (Meles meles) as a host of the infection. Proactive, non-selective culling of badgers can reduce the incidence of disease in cattle but may also have negative effects in the area surrounding culls that have been associated with social perturbation of badger populations. The selective removal of infected badgers would, in principle, reduce the number culled, but the effects of selective culling on social perturbation and disease outcomes are unclear...
2016: PloS One
https://www.readbyqxmd.com/read/27893793/field-trial-of-an-aerially-distributed-tuberculosis-vaccine-in-a-low-density-wildlife-population-of-brushtail-possums-trichosurus-vulpecula
#3
Graham Nugent, Ivor J Yockney, E Jackie Whitford, Martin L Cross, Frank E Aldwell, Bryce M Buddle
Oral-delivery Mycobacterium bovis bacillus Calmette-Guérin (BCG) vaccine in a lipid matrix has been shown to confer protection against M. bovis infection and reduce the severity of tuberculosis (TB) when fed to brushtail possums (Trichosurus vulpecula), the major wildlife vector of bovine TB in New Zealand. Here we demonstrate the feasibility of aerial delivery of this live vaccine in bait form to an M. bovis-infected wild possum population, and subsequently assess vaccine uptake and field efficacy. Pre-trial studies indicated a resident possum population at very low density (<0...
2016: PloS One
https://www.readbyqxmd.com/read/27892960/new-genome-wide-algorithm-identifies-novel-in-vivo-expressed-mycobacterium-tuberculosis-antigens-inducing-human-t-cell-responses-with-classical-and-unconventional-cytokine-profiles
#4
Mariateresa Coppola, Krista E van Meijgaarden, Kees L M C Franken, Susanna Commandeur, Gregory Dolganov, Igor Kramnik, Gary K Schoolnik, Inaki Comas, Ole Lund, Corine Prins, Susan J F van den Eeden, Gro E Korsvold, Fredrik Oftung, Annemieke Geluk, Tom H M Ottenhoff
New strategies are needed to develop better tools to control TB, including identification of novel antigens for vaccination. Such Mtb antigens must be expressed during Mtb infection in the major target organ, the lung, and must be capable of eliciting human immune responses. Using genome-wide transcriptomics of Mtb infected lungs we developed data sets and methods to identify IVE-TB (in-vivo expressed Mtb) antigens expressed in the lung. Quantitative expression analysis of 2,068 Mtb genes from the predicted first operons identified the most upregulated IVE-TB genes during in-vivo pulmonary infection...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27884716/therapeutic-effects-of-traditionalchinesemedicineniubeixiaohe-in-mouse-tuberculosis-models
#5
Yan Liang, Xiaomei Wang, Jinying Song, Lan Wang, Dan Chen, Yourong Yang, Xuejuan Bai, Jie Wang, Yingchang Shi, Shibing Chen, Jun Liu, Cunwei Yang, Huafeng Luo, Guangling Liu, Xueqiong Wu
ETHNOPHARMACOLOGICAL RELEVANCE: The traditional Chinese medicine Niubeixiaohe (NBXH) is an effective anti-tuberculosis prescription, which is made up of Bulbus Fritillariae Cirrhosae, Rhizoma Bletillae, Radix Platycodonis, Fructus Arctii, Herba Houttuyniae and Glutinous rice. In this study, NBXH powder (I) and three kinds of NBXH extracts (II, III, and IV) were prepared. The water decoction of NBXH had been used to treat TB in clinic sixteen years suggested that it was effective to treat TB...
November 21, 2016: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/27879332/mucosal-bcg-vaccination-induces-protective-lung-resident-memory-t-cell-populations-against-tuberculosis
#6
Carolina Perdomo, Ulrike Zedler, Anja A Kühl, Laura Lozza, Philippe Saikali, Leif E Sander, Alexis Vogelzang, Stefan H E Kaufmann, Andreas Kupz
: Mycobacterium bovis Bacille Calmette-Guérin (BCG) is the only licensed vaccine against tuberculosis (TB), yet its moderate efficacy against pulmonary TB calls for improved vaccination strategies. Mucosal BCG vaccination generates superior protection against TB in animal models; however, the mechanisms of protection remain elusive. Tissue-resident memory T (TRM) cells have been implicated in protective immune responses against viral infections, but the role of TRM cells following mycobacterial infection is unknown...
November 22, 2016: MBio
https://www.readbyqxmd.com/read/27872739/30-years-retrospective-review-of-tuberculosis-cases-in-a-tuberculosis-dispensary-in-bursa-nilufer-turkey-1985-2014-changes-of-epidemics
#7
Kayıhan Pala, Harika Gerçek, Tuncay Aydin Taş, Rukiye Çakir, Sedef Özgüç, Timur Yildiz
OBJECTIVE: The aim of this study is to describe the epidemiological and clinical aspects of patients who applied to the Bursa Nilufer Tuberculosis Dispensary by investigating the trends in epidemics over three decades. METHOD: In this retrospective observational study, the records of all tuberculosis cases (1630 patients) treated in the last 30 years (1985-2014) at the Bursa Nilufer Tuberculosis Dispensary were examined and statistically analyzed. RESULTS: Males comprised 65...
2016: Mediterranean Journal of Hematology and Infectious Diseases
https://www.readbyqxmd.com/read/27872016/tuberculosis-eradication-versus-control
#8
Marco Schito, Debra Hanna, Alimuddin Zumla
According to the World Health Organization (WHO), 10.4 million people succumbed to tuberculosis (TB) in 2015 and is now the number one cause of death world-wide from a preventable infectious disease. Bold vision is needed from global leaders and plans have been proposed to end the TB epidemic. However enthusiasm must be matched by tangible and achievable goals based on the science and available funding. In order to reach the target and goals set by the WHO's End-TB Strategy, the challenges for TB eradication need to be addressed...
November 18, 2016: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/27867751/t7-phage-display-library-a-promising-strategy-to-detect-tuberculosis-specific-biomarkers
#9
Harvinder Talwar, Jaya Talreja, Lobelia Samavati
One-third of the world's population is infected with tuberculosis, only 10% will develop active disease and the remaining 90% is considered to have latent TB (LTB). While active TB is contagious and can be lethal, the LTB can evolve to active TB. The diagnosis of TB can be challenging, especially in the early stages, due to the variability in presentation and nonspecific signs and symptoms. Currently, we have limited tools available to diagnose active TB, predict treatment efficacy and cure of active tuberculosis, the reactivation of latent tuberculosis infection, and the induction of protective immune responses through vaccination...
June 2016: Mycobacterial Diseases: Tuberculosis & Leprosy
https://www.readbyqxmd.com/read/27866772/h1-ic31-vaccination-is-safe-and-induces-long-lived-tnf-%C3%AE-il-2-cd4-t-cell-responses-in-m-tuberculosis-infected-and-uninfected-adolescents-a-randomized-trial
#10
Helen Mearns, Hennie D Geldenhuys, Benjamin M Kagina, Munyaradzi Musvosvi, Francesca Little, Frances Ratangee, Hassan Mahomed, Willem A Hanekom, Søren T Hoff, Morten Ruhwald, Ingrid Kromann, Peter Bang, Mark Hatherill, Peter Andersen, Thomas J Scriba
BACKGROUND: Control of the tuberculosis epidemic requires a novel vaccine that is effective in preventing tuberculosis in adolescents, a key target population for vaccination against TB. METHODS: Healthy adolescents, stratified by M. tuberculosis-infection status, were enrolled into this observer-blinded phase II clinical trial of the protein-subunit vaccine candidate, H1:IC31, comprising a fusion protein (H1) of Ag85B and ESAT-6, formulated with the IC31 adjuvant...
November 17, 2016: Vaccine
https://www.readbyqxmd.com/read/27865396/mycobacterium-smegmatis-proteoliposome-induce-protection-in-a-murine-progressive-pulmonary-tuberculosis-model
#11
Yanely Tirado, Alina Puig, Nadine Alvarez, Reinier Borrero, Alicia Aguilar, Frank Camacho, Fatima Reyes, Sonsire Fernandez, Jose Luis Perez, Reynaldo Acevedo, Dulce Mata Espinoza, Jorge Alberto Barrios Payan, Maria de Los A Garcia, Ramlah Kadir, María E Sarmiento, Rogelio Hernandez-Pando, Mohd-Nor Norazmi, Armando Acosta
Tuberculosis (TB) remains an important cause of mortality and morbidity. The TB vaccine, BCG, is not fully protective against the adult form of the disease and is unable to prevent its transmission although it is still useful against severe childhood TB. Hence, the search for new vaccines is of great interest. In a previous study, we have shown that proteoliposomes obtained from Mycobacterium smegmatis (PLMs) induced cross reactive humoral and cellular response against Mycobacterium tuberculosis (Mtb) antigens...
December 2016: Tuberculosis
https://www.readbyqxmd.com/read/27865395/innovative-tuberculosis-symposium-held-during-cuba-salud-2015
#12
EDITORIAL
Helena J Chapman, Luisa Armas Pérez
The fourth Tuberculosis (TB) Symposium, held during the Cuba Salud 2015 International Convention, highlighted advancements in research on TB and Mycobacterium tuberculosis (Mtb) by interdisciplinary teams from academic and federal institutions in Cuba, Colombia, Mexico, and the Dominican Republic. Delegates focused on the targets presented in the World Health Organization End TB Strategy for 2016-2035 and elaborated on four primary themes: 1) attention to vulnerable populations such as immunocompromised individuals, health care workers, and residents of long-term institutions such as prisons and nursing homes; 2) identification of active and latent TB cases through contact investigations; 3) spread and control of drug-resistant Mtb strains; and 4) advancements in the development of novel vaccines or "booster" immunizations...
December 2016: Tuberculosis
https://www.readbyqxmd.com/read/27865390/alternative-bcg-delivery-strategies-improve-protection-against-mycobacterium-tuberculosis-in-non-human-primates-protection-associated-with-mycobacterial-antigen-specific-cd4-effector-memory-t-cell-populations
#13
S Sharpe, A White, C Sarfas, L Sibley, F Gleeson, A McIntyre, R Basaraba, S Clark, G Hall, E Rayner, A Williams, P D Marsh, M Dennis
Intradermal (ID) BCG injection provides incomplete protection against TB in humans and experimental models. Alternative BCG vaccination strategies may improve protection in model species, including rhesus macaques. This study compares the immunogenicity and efficacy of BCG administered by ID and intravenous (IV) injection, or as an intratracheal mucosal boost (ID + IT), against aerosol challenge with Mycobacterium tuberculosis Erdman strain. Disease pathology was significantly reduced, and survival improved, by each BCG vaccination strategy, relative to unvaccinated animals...
December 2016: Tuberculosis
https://www.readbyqxmd.com/read/27865389/mycobacterium-indicus-pranii-as-a-booster-vaccine-enhances-bcg-induced-immunity-and-confers-higher-protection-in-animal-models-of-tuberculosis
#14
Mohd Saqib, Rahul Khatri, Bindu Singh, Ananya Gupta, Arvind Kumar, Sangeeta Bhaskar
BCG, the only approved vaccine protects against severe form of childhood tuberculosis but its protective efficacy wanes in adolescence. BCG has reduced the incidence of infant TB considerably in endemic areas; therefore prime-boost strategy is the most realistic measure for control of tuberculosis in near future. Mycobacterium indicus pranii (MIP) shares significant antigenic repertoire with Mtb and BCG and has been shown to impart significant protection in animal models of tuberculosis. In this study, MIP was given as a booster to BCG vaccine which enhanced the BCG mediated immune response, resulting in higher protection...
December 2016: Tuberculosis
https://www.readbyqxmd.com/read/27865379/antibodies-and-tuberculosis
#15
REVIEW
Ashley J Jacobs, Juthathip Mongkolsapaya, Gavin R Screaton, Helen McShane, Robert J Wilkinson
Tuberculosis (TB) remains a major public health problem internationally, causing 9.6 million new cases and 1.5 million deaths worldwide in 2014. The Bacillus Calmette-Guérin vaccine is the only licensed vaccine against TB, but its protective effect does not extend to controlling the development of infectious pulmonary disease in adults. The development of a more effective vaccine against TB is therefore a pressing need for global health. Although it is established that cell-mediated immunity is necessary for the control of latent infection, the presupposition that such immunity is sufficient for vaccine-induced protection has recently been challenged...
December 2016: Tuberculosis
https://www.readbyqxmd.com/read/27863623/tuberculous-lymphadenitis-of-the-head-and-neck-in-canadian-children-experience-from-a-low-burden-region
#16
Jason J Xu, Shazia Peer, Blake C Papsin, Ian Kitai, Evan J Propst
BACKGROUND: Children are more likely than adults to develop extra-pulmonary tuberculosis (EPTB), which often presents as cervical lymphadenopathy. The role of surgery in management is uncertain. We reviewed all head and neck EPTB cases presenting to our tertiary care pediatric institution over a twelve-year period. METHODS: All children 18 years of age and younger with EPTB involving the head and neck were included. We recorded clinical data and age at diagnosis, birth country, BCG vaccination status, as well as radiographic, surgical, histological, and microbiological results...
December 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27863556/oral-vaccination-of-cattle-with-heat-inactivated-mycobacterium-bovis-does-not-compromise-bovine-tb-diagnostic-tests
#17
Gareth J Jones, Sabine Steinbach, Iker A Sevilla, Joseba M Garrido, Ramon Juste, H Martin Vordermeier
In this study we investigated whether oral uptake of a heat inactivated M. bovis wildlife vaccine by domestic cattle induced systemic immune responses that compromised the use of tuberculin or defined antigens in diagnostic tests for bovine TB. Positive skin test and blood-based IFN-γ release assay (IGRA) results were observed in all calves vaccinated via the parenteral route (i.e. intramuscular). In contrast, no positive responses to tuberculin or defined antigens were observed in either the skin test or IGRA test when performed in calves vaccinated via the oral route...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27847016/low-prevalence-of-hepatitis-b-and-c-among-tuberculosis-patients-in-duhok-province-kurdistan-are-hbsag-and-anti-hcv-prerequisite-screening-parameters-in-tuberculosis-control-program
#18
Muayad A Merza, Safer M Haji, Abid Mohialdeen Hasan Alsharafani, Shivan U Muhammed
OBJECTIVE/BACKGROUND: Viral hepatitis, particularly hepatitis B virus (HBV) and hepatitis C virus (HCV), infections and tuberculosis (TB) are a global public health concern. Co-infection with HBV or HCV among TB patients may potentiate the risk of hepatotoxicity induced by anti-TB drugs. Hence, the aim of this study was to identify the prevalence of HBV and HCV among TB patients included in the Duhok National Tuberculosis Program (NTP). METHODS: The Duhok NTP Center is a specialized institution in Duhok City, Iraq, concerned with management and follow-up of TB patients...
September 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/27836953/correlates-of-tuberculosis-risk-predictive-biomarkers-for-progression-to-active-tuberculosis
#19
REVIEW
Elisa Petruccioli, Thomas J Scriba, Linda Petrone, Mark Hatherill, Daniela M Cirillo, Simone A Joosten, Tom H Ottenhoff, Claudia M Denkinger, Delia Goletti
New approaches to control the spread of tuberculosis (TB) are needed, including tools to predict development of active TB from latent TB infection (LTBI). Recent studies have described potential correlates of risk, in order to inform the development of prognostic tests for TB disease progression. These efforts have included unbiased approaches employing "omics" technologies, as well as more directed, hypothesis-driven approaches assessing a small set or even individual selected markers as candidate correlates of TB risk...
December 2016: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/27823900/gene-based-neonatal-immune-priming-potentiates-a-mucosal-adenoviral-vaccine-encoding-mycobacterial-ag85b
#20
Guixiang Dai, Hamada F Rady, Weitao Huang, Judd E Shellito, Carol Mason, Alistair J Ramsay
Tuberculosis remains a major public health hazard worldwide, with neonates and young infants potentially more susceptible to infection than adults. BCG, the only vaccine currently available, provides some protection against tuberculous meningitis in children but variable efficacy in adults, and is not safe to use in immune compromised individuals. A safe and effective vaccine that could be given early in life, and that could also potentiate subsequent booster immunization, would represent a significant advance...
December 7, 2016: Vaccine
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