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Bovine Tuberculosis

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https://www.readbyqxmd.com/read/28532992/assessment-of-concurrent-infection-with-bovine-viral-diarrhoea-virus-bvdv-and-mycobacterium-bovis-a-herd-level-risk-factor-analysis-from-northern-ireland
#1
A W Byrne, M Guelbenzu-Gonzalo, S A J Strain, S McBride, J Graham, A Lahuerta-Marin, R Harwood, D A Graham, S McDowell
Bovine viral diarrhoea virus (BVDV) is a significant pathogen of cattle, leading to severe economic and animal-welfare impacts. Furthermore, the pathogen has been associated with impacting the progression or spread of other pathogens (e.g. Mycobacterium bovis, the causative agent of bovine tuberculosis (bTB)). During this study we investigated (i) risk factors for BVDV at a herd-level and (ii) whether there was any association between BVDV and herd-level bTB risk. The data for this study were gathered from a voluntary BVDV control programme in Northern Ireland (2013-2015) based on the identification of virus positive animals through tissue tag testing of calves...
June 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28528495/dairy-farm-demographics-and-management-factors-that-played-a-role-in-the-re-emergence-of-brucellosis-on-dairy-cattle-farms-in-fiji
#2
Andrew Tukana, B Gummow
Little is published on risk factors associated with bovine brucellosis in Pacific island communities. The 2009 re-emergence of bovine brucellosis in Fiji enabled us to do an interview-based questionnaire survey of 81 farms in the Wainivesi locality of the Tailevu province on the main island of Fiji to investigate what risk factors could have played a role in the re-emergence of the disease. The survey was conducted on 68 farms that had no positive cases of bovine brucellosis and on 13 farms in the same area where cattle had returned a positive result to the Brucella Rose Bengal test...
May 20, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28521256/antibody-detection-tests-improve-the-sensitivity-of-tuberculosis-diagnosis-in-cattle
#3
C Casal, J A Infantes, M A Risalde, A Díez-Guerrier, M Domínguez, I Moreno, B Romero, L de Juan, J L Sáez, R Juste, C Gortázar, L Domínguez, J Bezos
We evaluated the sensitivity (Se) of the single cervical intradermal tuberculin (SIT) test, two interferon-gamma (IFN-γ) assays and three different antibody detection techniques for bovine tuberculosis (bTB) diagnosis in 131 mixed beef breed cattle. The results of the diagnostic techniques performed over the whole herd, and over the animals confirmed as infected based on the presence of lesions compatible with the disease and/or M. bovis isolation were compared to determine apparent prevalence (AP) and Se...
May 11, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28512637/positive-correlation-between-ip-10-and-ifn-%C3%AE-levels-in-rhesus-monkeys-macaca-mulatta-with-either-naturally-acquired-or-experimental-infection-of-mycobacterium-tuberculosis
#4
Fangui Min, Ruike Wu, Jinchun Pan, Shuwu Huang, Yinzhu Luo, Yu Zhang
Numerous studies identify that IP-10 and IFN-γ are involved in leucocyte migration and activation and regarded as promising surrogate biomarkers in human and bovine tuberculosis infection, but there is lack of evidence for IP-10 in nonhuman primates. In this study, we directly determined IP-10 and IFN-γ levels in plasma from 30 healthy monkeys, 30 monkeys with naturally acquired tuberculosis, 4 monkeys experimentally infected with tuberculosis, and PPD stimulated whole blood of 14 monkeys with naturally acquired tuberculosis by ELISA...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28499434/development-of-a-novel-immunochromatographic-lateral-flow-assay-specific-for-mycobacterium-bovis-cells-and-its-application-in-combination-with-immunomagnetic-separation-to-test-badger-faeces
#5
Linda D Stewart, Nuria Tort, Paul Meakin, Jose M Argudo, Ruramayi Nzuma, Neil Reid, Richard J Delahay, Roland Ashford, W Ian Montgomery, Irene R Grant
BACKGROUND: The European badger is an important wildlife reservoir of Mycobacterium bovis implicated in the spread of bovine tuberculosis in the United Kingdom and Ireland. Infected badgers are known to shed M. bovis in their urine and faeces, which may contaminate the environment. To aid bovine tuberculosis control efforts novel diagnostic tests for detecting infected and shedding badgers are needed. We proposed development of a novel, rapid immunochromatographic lateral flow device (LFD) as a non-invasive test to detect M...
May 12, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28487230/assessment-of-antigenic-supplementation-of-bovine-purified-protein-derivative-for-diagnosis-of-subclinical-infection-with-mycobacterium-bovis-in-cattle
#6
A H Alvarez, A Gutiérrez-Ortega, V Gómez-Entzin, G Pérez-Mayorga, J Naranjo-Bastién, V González-Martínez, F Milián-Suazo, M Martínez-Velázquez, S Herrera-Rodríguez, E Hinojoza-Loza
Bovine tuberculosis (bTB) is usually diagnosed in vivo and ex vivo on the basis of delayed hypersensitivity reactions with a complex pool of antigens named bovine tuberculin (PPDB). The IFN-γ release assay (IGRA) for bTB is a blood-based assay that improves detection of infected cattle at early stages that escape skin testing. Improvements to IFN-γ testing with specific proteins have been performed to increase sensitivity. DosR regulon-related antigens are well known mycobacterial proteins expressed during the non-replicative phases of infection, this has been useful to improve the diagnosis of subclinical forms of TB in suspected individuals...
May 6, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28485632/mycobacterium-tuberculosis-infection-in-a-domesticated-korean-wild-boar-sus-scrofa-coreanus
#7
Min-Goo Seo, In-Ohk Ouh, Munki Kim, Jienny Lee, Young-Hoan Kim, Jae-Cheul Do, Dongmi Kwak
Tuberculosis, a chronic progressive disease, has been reported in bovine, swine, and primate species. Here, we report the first case of Mycobacterium tuberculosis infection in a Korean wild boar ( Sus scrofa coreanus). The owners this domesticated boar brought it to the Gyeongbuk Veterinary Service Laboratory in Korea after it was found dead and severely emaciated. Demarcated yellowish white nodules were found around the larynx and retropharyngeal lymph node during necropsy. The lungs had diffuse fibrinous pleuritis, severe congestion, and scattered nodules...
May 9, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28480452/the-prevalence-of-tuberculosis-in-cattle-and-their-handlers-in-north-tongu-volta-region-ghana
#8
Esther A Amemor, S O Sackey, Nathaniel Yebuah, Raphael Deladem Folitse, Benjamin O Emikpe, E Afari, F Wurapa, C Ohuabunwo, K Addo, David Mensah, E Gaglo, Mark-Hansen, S Johnson, William Tasiame, D Amedzovor, D Nkunafa, Frank Bonsu
BACKGROUND: The need to understand the contribution of bovine tuberculosis (BTB) to the general tuberculosis burden in a poor resource setting is paramount. The aim of this study is to determine the burden of BTB among herdsmen and cattle in the North Tongu district of Volta Region in Ghana. MATERIALS AND METHODS: A cross- sectional study was conducted in the North Tongu District of the Volta Region between the period of October 2011- March 2012. A well-structured questionnaire was used to collect socio-demographic information and possible risk factor information on cattle from participants...
2017: African Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28472445/defining-the-population-attributable-fraction-for-infectious-diseases
#9
Ellen Brooks-Pollock, Leon Danon
Background: The population attributable fraction (PAF) is used to quantify the contribution of a risk group to disease burden. For infectious diseases, high-risk individuals may increase disease risk for the wider population in addition to themselves; therefore methods are required to estimate the PAF for infectious diseases. Methods: A mathematical model of disease transmission in a population with a high-risk group was used to compare existing approaches for calculating the PAF...
May 4, 2017: International Journal of Epidemiology
https://www.readbyqxmd.com/read/28460600/comparison-of-the-bbl-mycobacteria-growth-indicator-tube-the-bactec-12b-and-solid-media-for-the-isolation-of-mycobacterium-bovis
#10
Gary F Yates, Marian Price-Carter, Kirstie Bland, Maree A Joyce, Farina Khan, Melissa Surrey, Geoffrey W de Lisle
We compared different methods for their ability to isolate Mycobacterium bovis from tissue samples from animals with lesions resembling bovine tuberculosis. In the first trial, M. bovis was isolated from 86 of 200 tissue samples that were cultured using 2 liquid media, BACTEC 12B and BBL mycobacteria growth indicator tube (MGIT), and a solid medium, Middlebrook 7H11 supplemented with pyruvate (7H11P). M. bovis was isolated from 2 samples with MGIT but not BACTEC 12B. M. bovis was isolated from 9 samples with BACTEC but not MGIT; these 9 samples came from the North Canterbury/Marlborough region of New Zealand...
April 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28454655/toll-like-receptor-tlr-diversity-influences-mycobacterial-growth-in-african-buffalo
#11
Nikki le Roex, Anna Jolles, Brianna Beechler, Paul van Helden, Eileen Hoal
Understanding the role of wildlife in the maintenance or spread of emerging infectious diseases is a growing priority across the world. Bovine tuberculosis (BTB) is a chronic, infectious disease caused by Mycobacterium bovis (M. bovis). BTB is widespread within game reserves in southern Africa, and within these ecosystems the primary wildlife host of this disease is the African buffalo. We used a modified bacterial killing assay for mycobacteria to investigate the effect of Toll-like receptor (TLR) genetic diversity and demographic parameters on the ability of African buffalo to restrict mycobacterial growth...
May 2017: Tuberculosis
https://www.readbyqxmd.com/read/28454647/genotyping-and-rifampicin-and-isoniazid-resistance-in-mycobacterium-bovis-strains-isolated-from-the-lymph-nodes-of-slaughtered-cattle
#12
Marília Masello Junqueira Franco, Márcio Garcia Ribeiro, Fernando Rogério Pavan, Marcelo Miyata, Marcos Bryan Heinemann, Antonio Francisco de Souza Filho, Rosilene Fressatti Cardoso, Aryadne Larissa de Almeida, Ricardo Ichiro Sakate, Antonio Carlos Paes
In developing nations, 10-20% of the human cases of tuberculosis are caused by Mycobacterium bovis. However, this percentage may be underestimated because most laboratories in developing countries do not routinely perform mycobacterial cultures, and only a few have the systems in place to identify M. bovis. There are few studies investigating genotypic diversity and drug resistance in M. bovis from animal and/or human infections. The genotypic diversity of M. bovis strains obtained from bovine lymph nodes were investigated by spacer oligonucleotide typing (spoligotyping) and mycobacterial interspersed repetitive unit-variable-number tandem repeat typing (MIRU-VNTR)...
May 2017: Tuberculosis
https://www.readbyqxmd.com/read/28453114/-tuberculosis-caused-by-mycobacterium-bovis-in-workers-of-bovine-tuberculosis-sanitation-farms-in-antioquia-boyac%C3%A3-and-cundinamarca
#13
Andrés F Leal-Bohórquez, Claudia M Castro-Osorio, Luz M Wintaco-Martínez, Rafael Villalobos, Gloria M Puerto-Castro
Objective: To perform classic and molecular epidemiological surveillance of human tuberculosis caused by Mycobacterium bovis in bovine supply chains at farms with PPD positive bovines in the departments of Antioquia, Boyacá and Cundinamarca during a one-year period. Methods: Livestock farms with PPD positive bovines or buffalos were visited in the study departments according to information obtained in the "Programa Nacional de Tuberculosis bovina" (National program on bovine Tuberculosis) released by ICA (Colombian Agriculture and Livestock Institute)...
September 2016: Revista de Salud Pública
https://www.readbyqxmd.com/read/28448585/impact-of-temperature-and-soil-type-on-mycobacterium-bovis-survival-in-the-environment
#14
Elodie Barbier, Murielle Rochelet, Laurent Gal, Maria Laura Boschiroli, Alain Hartmann
Mycobacterium bovis, the causative agent of the bovine tuberculosis (bTB), mainly affects cattle, its natural reservoir, but also a wide range of domestic and wild mammals. Besides direct transmission via contaminated aerosols, indirect transmission of the M. bovis between wildlife and livestock might occur by inhalation or ingestion of environmental substrates contaminated through infected animal shedding. We monitored the survival of M. bovis in two soil samples chosen for their contrasted physical and-chemical properties (i...
2017: PloS One
https://www.readbyqxmd.com/read/28434972/one-bacillus-to-rule-them-all-investigating-broad-range-host-adaptation-in-mycobacterium-bovis
#15
REVIEW
Adrian R Allen
No abstract text is available yet for this article.
April 20, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28426770/correction-risk-factors-for-bovine-tuberculosis-btb-in-cattle-in-ethiopia
#16
Sintayehu W Dejene, Ignas M A Heitkönig, Herbert H T Prins, Fitsum A Lemma, Daniel A Mekonnen, Zelalem E Alemu, Tessema Z Kelkay, Willem F de Boer
[This corrects the article DOI: 10.1371/journal.pone.0159083.].
2017: PloS One
https://www.readbyqxmd.com/read/28413050/toll-like-receptor-2-gene-polymorphisms-in-chinese-holstein-cattle-and-their-associations-with-bovine-tuberculosis
#17
Zhanqin Zhao, Yun Xue, Zhigang Hu, Feng Zhou, Beibei Ma, Ta Long, Qiao Xue, Huisheng Liu
This study evaluated whether there was an association between polymorphisms within the Toll-like receptor 2 gene (TLR2) of Chinese Holstein cattle and susceptibility to bovine tuberculosis (BTB). In a case-control study including 210 BTB cases and 237 control cattle, we found only two common single-nucleotide polymorphisms (SNPs) within the entire coding region of the TLR2 gene, A631G (rs95214857) and T1707C (rs1388116488). Additionally, the allele and genotype distributions of A631G and T1707C were not different between case and control groups, indicated that these SNPs were not associated with susceptibility to BTB...
April 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28410676/the-immunoregulatory-effects-of-co-infection-with-fasciola-hepatica-from-bovine-tuberculosis-to-johne-s-disease
#18
REVIEW
Amalia Naranjo Lucena, Laura Garza Cuartero, Grace Mulcahy, Annetta Zintl
Fasciola hepatica (liver fluke) is a parasite prevalent in much of the world that causes the economically-important disease of fasciolosis in livestock. The threat that this disease poses extends beyond its direct effects due to the parasite's immunomodulatory effects. Research at this laboratory is focusing on whether this immunoregulation can, in animals infected with liver fluke, exert a bystander effect on concurrent infections in the host. It has already been established that F. hepatica infection reduces cell mediated immune responses to Mycobacterium bovis in cattle, and that the interaction between the two pathogens can be detected on an epidemiological scale...
April 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28404571/early-detection-of-circulating-antigen-and-igm-associated-immune-complexes-during-experimental-mycobacterium-bovis-infection-in-cattle
#19
Konstantin P Lyashchenko, Rena Greenwald, Alina Sikar-Gang, Archana A Sridhara, Ashley Johnathan, Paul Lambotte, Javan Esfandiari, Mayara F Maggioli, Tyler C Thacker, Mitchell V Palmer, W Ray Waters
The presence of circulating antigen in cattle experimentally infected with Mycobacterium bovis was demonstrated using dual-path platform (DPP) technology. The antigen-capture immunoassays employed rabbit polyclonal antibody recognizing predominantly M. tuberculosis complex-specific epitopes and were able to detect soluble substances and whole cells of mycobacteria. The antigen found in serum appeared to be mostly bound to IgM, but not to IgG, within the immune complexes formed at early stages of M. bovis infection...
April 12, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28393187/generation-and-characterization-of-induced-pluripotent-stem-cells-from-guinea-pig-fetal-fibroblasts
#20
Yuehong Wu, Ouyang Li, Chengwen He, Yong Li, Min Li, Xiaoming Liu Liu, Yujiong Wang, Yulong He
Induced pluripotent stem cells (iPS) represent an important tool to develop disease‑modeling assays, drug testing assays and cell‑based replacement therapies. The application of iPS in these fields requires the development of suitable animal models. Of the suitable species, guinea pigs are particularly important and offer significant advantages. Successful iPS generation has been accomplished in a number of species; however, it has not been reported in the guinea pig. The present study successfully generated iPS from guinea pigs (giPS) using single polycistronic virus transduction with mouse octamer‑binding transcription factor 4 (Oct4), sex determining region Y‑box 2 (Sox2), Kruppel‑like factor 4 and c‑Myc...
June 2017: Molecular Medicine Reports
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