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Mycobacterium bovis

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https://www.readbyqxmd.com/read/28636635/microrna-144-3p-inhibits-autophagy-activation-and-enhances-bacillus-calmette-gu%C3%A3-rin-infection-by-targeting-atg4a-in-raw264-7-macrophage-cells
#1
Le Guo, Linlin Zhou, Qian Gao, Aijun Zhang, Jun Wei, Dantong Hong, Yuankui Chu, Xiangguo Duan, Ying Zhang, Guangxian Xu
MicroRNAs (miRNAs) are small noncoding nucleotides that play major roles in the response of host immune cells. Autophagy plays a key role in activating the antimicrobial host defense against Mycobacterium tuberculosis (M. tuberculosis). Whether miRNAs specifically influence the activation of macrophage autophagy during M. tuberculosis infection is largely unknown. In the present study, we demonstrate that Mycobacterium bovis Bacillus Calmette-Guérin (BCG) infection of macrophages leads to increased expression of miR-144-3p, which targets autophagy-related gene 4a (ATG4a), to inhibit autophagy activation and antimicrobial responses to BCG...
2017: PloS One
https://www.readbyqxmd.com/read/28635524/serology-and-protein-electrophoresis-for-evidence-of-exposure-to-12-mink-pathogens-in-free-ranging-american-mink-neovison-vison-in-argentina
#2
Pablo Eduardo Martino, Luis Ernesto Samartino, Néstor Oscar Stanchi, Nilda Esther Radman, Eduardo Joaquín Parrado
BACKGROUND: Basic pathologic characteristics for farmed minks were previously reported worldwide. However, its status in the wild has not been studied in detail. OBJECTIVE: Serology and electrophoresis were carried out for evidence of exposure to 12 mink pathogens on two different locations. ANIMALS AND METHODS: Serology was done in 87 wild minks by reference techniques against Toxoplasma gondii, Encephalitozoon cuniculi, Neospora caninum, Brucella abortus, Mycobacterium bovis, Leptospira interrogans, canine distemper virus (CDV), canine adenovirus (CAV), canine parvovirus (CPV), rabies virus (RV), Influenza A virus (FLUAV) and Aleutian disease virus (ADV)...
December 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/28631644/evaluation-of-a-new-rapid-kit-bd-mgit-tbc-identification-test-for-confirmation-of-mycobacterium-tuberculosis-complex
#3
Gandhi Kandhakumari, Selvaraj Stephen
At present, three rapid kits are available globally for the confirmation of Mycobacterium tuberculosis complex (MTBC) in cultures by MPT64 antigen (MPT64 Ag) detection. These include Capilia TB, SD Bioline, and BD MGIT TBc Identification (TBcID). The third kit is yet to be validated in India. We have tested this kit and compared with SD Bioline using conventional tests as gold standard. Seventy-one MTBC (70 M. tuberculosis and one Mycobacterium bovis) and four nontuberculous mycobacteria (NTM) were isolated from 649 clinical specimens in MGIT 960 and/or Lowenstein-Jensen slants (LJ)...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28629354/acetone-leaf-extracts-of-some-south-african-trees-with-high-activity-against-escherichia-coli-also-have-good-antimycobacterial-activity-and-selectivity-index
#4
Ishaku L Elisha, Francien S Botha, Balungile Madikizela, Lyndy J McGaw, Jacobus N Eloff
BACKGROUND: Tuberculosis is a world-wide problem affecting humans and animals. There is increasing development of resistance of the pathogens to current antimycobacterial agents. Many authors have investigated activities of extracts and isolated compounds from plants. The traditional uses of plants have frequently been the criterion to select plants investigated. In this contribution, we investigate whether plant extracts with very good activity against Escherichia coli may also be active against mycobacteria...
June 19, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28622866/pathology-and-genetic-findings-in-a-rare-case-of-mycobacterium-caprae-infection-in-a-sow
#5
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/28620588/immunogenicity-and-protective-efficacy-of-a-fusion-protein-tuberculosis-vaccine-combining-five-esx-family-proteins
#6
Zhi-Hao Xiang, Rui-Feng Sun, Chen Lin, Fu-Zeng Chen, Jun-Tao Mai, Yu-Xiao Liu, Zi-Yan Xu, Lu Zhang, Jun Liu
One strategy to develop the next generation of tuberculosis vaccines is to construct subunit vaccines based on T cell antigens. In this study, we have evaluated the vaccine potential of a fusion protein combining EsxB, EsxD, EsxG, EsxU, and EsxM of Mycobacterium tuberculosis (M. tb). This recombinant protein, named BM, was expressed in and purified from Escherichia coli. Immunization of C57BL/6 mice with purified BM protein formulated in Freund's incomplete adjuvant induced the production of Th1 cytokines (IFN-γ, TNF, and IL-2) and multifunctional CD4(+) T cells...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28619159/original-mycobacterial-sin-a-consequence-of-highly-homologous-antigens
#7
REVIEW
A O Jenkins, A Michel, V Rutten
The role of antigens shared between Mycobacteria in in-vivo cross-reactive immune responses in host animals, have been reported to be responsible for reduced BCG vaccination efficacy as well reduced specificity of routine immunological diagnostic tests. This presents with significant disease control challenges in humans and animals. The present review highlights the results of previous studies on the effect of pre-sensitization to environmental mycobacteria on either pathogenic mycobacteria and/or M. bovis BCG, in experimental animals...
May 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
#8
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/28610767/disseminated-infection-due-to-mycobacterium-bovis-after-intravesical-instilaltion-of-bacillus-calmette-gu%C3%A3-rin
#9
Sagrario María Santos Seoane, Vanesa Diaz García, María Eugenia Rivas Carmenado, Aida Fernández Pantiga
No abstract text is available yet for this article.
June 10, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/28609019/synthesis-biological-evaluation-and-molecular-docking-studies-of-novel-3-aryl-5-alkyl-thio-1h-1-2-4-triazoles-derivatives-targeting-mycobacterium-tuberculosis
#10
Navnath D Rode, Amol D Sonawane, Laxman Nawale, Vijay M Khedkar, Ramesh A Joshi, Anjali P Likhite, Dhiman Sarkar, Rohini R Joshi
A small library of new 3-aryl-5-(alkyl-thio)-1H-1,2,4-triazoles was synthesized and screened for the anti-mycobacterial potency against M. tuberculosis H37 Ra strain and M. bovis BCG both in active and dormant stage. Among the synthesized library, 25 compounds exhibited promising anti-TB activity in the range of IC50 0.03-5.88 μg/mL for dormant stage and 20 compounds in the range of 0.03-6.96 μg/mL for active stage. Their lower toxicity (>100 μg/mL) and higher selectivity (SI = >10) against all cancer cell lines screened makes them interesting compounds with potential anti-mycobacterial effects...
June 13, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28600575/altered-humoral-immunity-to-mycobacterial-antigens-in-japanese-patients-affected-by-inflammatory-demyelinating-diseases-of-the-central-nervous-system
#11
Davide Cossu, Kazumasa Yokoyama, Yuji Tomizawa, Eiichi Momotani, Nobutaka Hattori
Mycobacterium avium subsp. paratuberculosis (MAP) and Mycobacterium bovis (BCG) have been associated to several human autoimmune diseases such as multiple sclerosis (MS), but there are conflicting evidence on the issue. The objective of this study is to evaluate their role in Japanese patients affected by inflammatory demyelinating disorders of the central nervous system (IDDs). A total of 97 IDDs subjects including 51 MS and 46 neuromyelitis optica spectrum disorder (NMOSD) patients, and 34 healthy controls (HCs) were tested for the detection of IgG, IgM and IgA against mycobacterial antigens by indirect ELISA...
June 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28599612/mycobacterioses-in-dogs-and-cats-from-buenos-aires-argentina
#12
Soledad Barandiaran, Marcela Martínez Vivot, Elvira Falzoni, María Jimena Marfil, Gabriela Pérez Tort, Paula Rovatti, Mónica Fernández, Ricardo Iachini, Fernanda Satek, Adriana Duchene, Martín José Zumárraga
Mycobacterioses can produce nonspecific clinical signs in dogs and cats that make diagnosis difficult. Furthermore, the full characterization of mycobacterial agents is not always possible or practical. We characterized mycobacteria detected through cytology in 12 dogs and 7 cats with generalized clinical signs from the province of Buenos Aires in Argentina. In dogs, molecular testing confirmed the presence of Mycobacterium avium subsp. hominissuis (MAH) in 8 cases and M. fortuitum in 1 case. All dogs were Miniature Schnauzers, suggesting that this breed may be more susceptible to M...
June 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28592322/potential-for-rapid-antibody-detection-to-identify-tuberculous-cattle-with-non-reactive-tuberculin-skin-test-results
#13
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
#14
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
#15
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/28579973/conflicting-role-of-mycobacterium-species-in-multiple-sclerosis
#16
REVIEW
Davide Cossu, Kazumasa Yokoyama, Nobutaka Hattori
Mycobacterium is a genus of aerobic and acid-fast bacteria, which include several pathogenic organisms that cause serious diseases in mammals. Previous studies have associated the immune response against mycobacteria with multiple sclerosis (MS), a chronic demyelinating disease of the central nervous system with unknown etiology. The role of mycobacteria in the pathological process has been controversial and often conflicting. We provide a detailed review of the mycobacteria that have been linked to MS over the last three decades, with a focus on Mycobacterium bovis bacille Calmette-Guérin vaccine for human and oral exposure to Mycobacterium avium subsp...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28575173/health-care-associated-mycobacterium-bovis-bcg-infection-in-cancer-patients-without-prior-bcg-instillation
#17
Y Meije, J Martínez-Montauti, J A Caylà, J Loureiro, L Ortega, M Clemente, X Sanz, M Ricart, M J Santomà, P Coll, M Sierra, M Calsina, M Vaqué, I Ruiz-Camps, C López-Sánchez, M Montes, A Ayestarán, J Carratalà, A Orcau
Background: Bacille Calmette-Guérin (BCG), an attenuated strain of Mycobacterium bovis, is widely used as adjunctive therapy for superficial bladder cancer. Intravesical administration of BCG has been associated with systemic infection. Disseminated infection due to M. bovis is otherwise uncommon. Methods: After identification of three patients with health-care associated BCG infection (HCBCGI) who had never received intravesical BCG administration, an epidemiologic study was performed...
May 29, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28572807/a-new-adjuvant-mtom-mediates-mycobacterium-tuberculosis-subunit-vaccine-to-enhance-th1-type-t-cell-immune-responses-and-il-2-t-cells
#18
Qi Yu, Xiaochun Wang, Xionglin Fan
The only licensed vaccine Mycobacterium bovis Bacillus Calmette-Guérin (BCG) cannot prevent the prevalence of tuberculosis (TB), which remains a major public health problem worldwide. A more effective TB vaccine than BCG is urgently needed. Subunit vaccine is a promising strategy, and suitable adjuvants will benefit the development of effective TB subunit vaccines. MTO, consisting of monophosphoryl lipid A (MPLA), trehalose-6,6'-dibehenate (TDB), and MF59, was developed as an adjuvant of TB vaccine because of its ability to evoke the Th1-type T cell responses, while it is insufficient to induce single and multifunctional IL-2(+) T cells and has a limited ability to confer protection against Mycobacterium tuberculosis infection...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28567030/a-new-rabbit-skin-model-to-evaluate-protective-efficacy-of-tuberculosis-vaccines
#19
Huiyu Chen, Xun Liu, Xingming Ma, Qian Wang, Guang Yang, Hongxia Niu, Shuaixiang Li, Bingzheng He, Shanshan He, Arthur M Dannenberg, Bingdong Zhu, Ying Zhang
Background: BCG protection is suboptimal and there is significant interest to develop new tuberculosis (TB) vaccines. However, there are significant limitations of the current vaccine evaluation systems in the mouse model. Here, we developed a BCG-challenge rabbit skin model as a new way to evaluate the protective efficacy of selected TB subunit vaccine candidates. Methods: Rabbits were immunized with subunit vaccines, including EAMM (ESAT6-Ag85B-MPT64<190-198>-Mtb8.4), MH (Mtb10.4-HspX), and LT70 (ESAT6-Ag85B-MPT64<190-198>-Mtb8...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28566080/-molecular-epidemiology-of-human-mycobacterium-bovis-infection-in-aegean-region-turkey
#20
Cengiz Çavuşoğlu, Fethiye Ferda Yılmaz
Mycobacterium bovis, which has a broader host spectrum as opposed to Mycobacterium tuberculosis that generally causes disease in humans, mainly leads to chronic progressive pulmonary disease in a large number of domestic and wild mammals, particularly cattle. The term "zoonotic tuberculosis (TB)" is used to describe M.bovis infection in humans. "Zoonotic TB" can not be differentiated clinically, radiologically or pathologically from TB caused by M.tuberculosis. The aim of this study was to evaluate the role of M...
April 2017: Mikrobiyoloji Bülteni
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