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Bovine Tuberculosis

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https://www.readbyqxmd.com/read/28622866/pathology-and-genetic-findings-in-a-rare-case-of-mycobacterium-caprae-infection-in-a-sow
#1
Benedetta Amato, Teresa Maria Capucchio, Elena Biasibetti, Elena Mangano, Beatrice Maria Boniotti, Lodovica Maria Pacciarini, Sergio Migliore, Maria Vitale, Michele Fiasconaro, Vincenzo Di Marco Lo Presti
Bovine tuberculosis, a reemerging zoonosis in diverse ecological scenarios, has been reported in the autochthonous Nebrodi black pig breed population used for meat production in Italy. During a routine abattoir inspection in 2013, 24 of 299 carcasses (8%) of Nebrodi black pigs presented tuberculosis-like lesions at pathologic examination. Mycobacterium bovis was isolated from 23 animals and M. caprae from a 3-year-old sow. The sow showed severe diffuse lesions involving the visceral organs, right coxofemoral joint, and mammary glands...
June 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28610788/evaluation-of-antigen-specific-interleukin-1%C3%AE-as-a-biomarker-to-detect-cattle-infected-with-mycobacterium-bovis
#2
Mahmoud M Elnaggar, Gaber S Abdellrazeq, Alaa Elsisy, Asmaa H Mahmoud, Abdelrazeq Shyboub, Martina Sester, Samy A Khaliel, Mahavir Singh, Helmy A Torky, William C Davis
Bovine tuberculosis (bTB) is a major world-wide health problem that has been difficult to control, due to the lack of an effective vaccine and limited ability of the tuberculin skin test (TST) and the ancillary whole blood interferon-gamma (IFN-γ) release assay (IGRA) to detect all infected animals. A 6 h cytokine flow cytometric IFN-γ (CFC) assay was developed in effort to overcome these limitations and expand methods for studying the mechanisms of bTB immunopathogenesis. The present study was conducted to evaluate IL-1β as a biomarker to use in conjunction with the IFN-γ CFC assay to improve the diagnostic accuracy for bTB...
July 2017: Tuberculosis
https://www.readbyqxmd.com/read/28592322/potential-for-rapid-antibody-detection-to-identify-tuberculous-cattle-with-non-reactive-tuberculin-skin-test-results
#3
W Ray Waters, H Martin Vordermeier, Shelley Rhodes, Bhagwati Khatri, Mitchell V Palmer, Mayara F Maggioli, Tyler C Thacker, Jeffrey T Nelson, Bruce V Thomsen, Suelee Robbe-Austerman, Doris M Bravo Garcia, Mark A Schoenbaum, Mark S Camacho, Jean S Ray, Javan Esfandiari, Paul Lambotte, Rena Greenwald, Adrian Grandison, Alina Sikar-Gang, Konstantin P Lyashchenko
BACKGROUND: Bovine tuberculosis (TB) control programs generally rely on the tuberculin skin test (TST) for ante-mortem detection of Mycobacterium bovis-infected cattle. RESULTS: Present findings demonstrate that a rapid antibody test based on Dual-Path Platform (DPP(®)) technology, when applied 1-3 weeks after TST, detected 9 of 11 and 34 of 52 TST non-reactive yet M. bovis-infected cattle from the US and GB, respectively. The specificity of the assay ranged from 98...
June 7, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28591268/diagnosis-of-mycobacteria-in-bovine-milk-an-overview
#4
Carmen Alicia Daza Bolaños, Carolina Lechinski de Paula, Simony Trevizan Guerra, Marília Masello Junqueira Franco, Márcio Garcia Ribeiro
Tuberculosis remains as the world's biggest threat. In 2014, human tuberculosis ranked as a major infectious disease by the first time, overcoming HIV death rates. Bovine tuberculosis is a chronic disease of global distribution that affects animals and can be transmitted to humans by the consumption of raw milk, representing a serious public health concern. Despite the efforts of different countries to control and eradicate bovine tuberculosis, the high negative economic impact on meat and milk production chains remains, given the decreased production efficiency (approximately 25%), the high number of condemned carcasses, and increased animal culling rates...
June 5, 2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/28585299/mycobacterium-bovis-hosted-by-free-living-amoebae-permits-their-long-term-persistence-survival-outside-of-host-mammalian-cells-and-remain-capable-of-transmitting-disease-to-mice
#5
Andrea Sanchez-Hidalgo, Andrés Obregón-Henao, William H Wheat, Mary Jackson, Mercedes Gonzalez-Juarrero
Bovine tuberculosis (TB) is a zoonotic disease caused by Mycobacterium bovis. Despite intensive TB control campaigns, there are sporadic outbreaks of bovine TB in regions declared TB-free. It is unclear how M. bovis is able to survive in the environment for long periods of time. We hypothesized that Free-living amoebae (FLA), as ubiquitous inhabitants of soil and water, may act as long-term reservoirs of M. bovis in the environment. In our model, M. bovis would be taken up by amoebal trophozoites, which are the actively feeding, replicating and mobile form of FLA...
June 5, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28553557/factors-affecting-herd-status-for-bovine-tuberculosis-in-dairy-cattle-in-northern-thailand
#6
Tawatchai Singhla, Sukolrat Boonyayatra, Veerasak Punyapornwithaya, Kimberly L VanderWaal, Julio Alvarez, Srinand Sreevatsan, Somphorn Phornwisetsirikun, Jamnong Sankwan, Mongkol Srijun, Scott J Wells
The objective of this case-control study was to identify farm-level risk factors associated with bovine tuberculosis (bTB) in dairy cows in northern Thailand. Spatial analysis was performed to identify geographical clustering of case-farms located in Chiang Mai and Chiang Rai provinces in northern Thailand. To identify management factors affecting bTB status, a matched case-control study was conducted with 20 case-farms and 38 control-farms. Case-farms were dairy farms with at least single intradermal tuberculin test- (SIT-) reactor(s) in the farms during 2011 to 2015...
2017: Veterinary Medicine International
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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...
July 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28485632/mycobacterium-tuberculosis-infection-in-a-domesticated-korean-wild-boar-sus-scrofa-coreanus
#13
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...
June 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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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