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| Registros recuperados: 26 | |
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| Vázquez-Flores,Felicitas; Alonso,Rogelio; Villegas-Sepúlveda,Nicolás; Arriaga,Camila; Pereira-Suárez,Ana Laura; Mancilla,Raúl; Estrada-Chávez,Ciro. |
| Bovine tuberculosis, caused by Mycobacterium bovis, is a disease of socio-economic and public health importance and of significance to international trade regulation. Allelic variants of several genes have been implicated in the genetic susceptibility to tuberculosis in some human populations, but little is known in cattle. We surveyed 34 European, 18 Asian, 20 Creole and 23 hybrid bovines for polymorphisms of the bovine solute carrier family 11 a1(Slc11a1) gene, formerly known as natural resistance associated macrophage protein (Nramp1), gene by typing the cattle using two microsatellite loci closely linked to this gene. The microsatellites used were 311-22, located at the 3' untranslated region (3' UTR) of the Slc11a1 gene, and ARO28 situated about 0.6... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovine lineages; Mycobacterium bovis; Microsatellite loci; Nramp1; Slc11a1; 3' UTR. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000300019 |
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| Petricevich,V.L.; Ueda,C.; Alves,R.C.B.; da Silva,M.A.; Moreno,C.; Melo,A.R.; Dias da Silva,W.. |
| Two attenuated bacillus Calmette-Guérin (BCG) preparations derived from the same Moreau strain, Copenhagen but grown in Sauton medium containing starch and bacto-peptone (onco BCG, O-BCG), or asparagine (intradermal BCG, ID-BCG), exhibited indistinguishable DNA sequences and bacterial morphology. The number of viable bacilli recovered from spleen, liver and lungs was approximately the same in mice inoculated with the vaccines and was similarly reduced (over 90%) in mice previously immunized with either BCG vaccine. The humoral immune response evoked by the vaccines was, however, distinct. Spleen cell proliferation accompanying the growth of bacilli in tissue was significantly higher in mice inoculated with O-BCG. These cells proliferated in vitro upon... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus Calmette-Guérin; BCG; Tuberculosis; Mycobacterium bovis; Vaccine. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000100010 |
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| Morés,N.; Amaral,A.L.; Ventura,L.; Silva,R.A.M.; Silva,V.S.; Barioni Junior,W.. |
| Avaliou-se a eficiência do teste de tuberculina intradérmico comparado, para identificar rebanhos suínos infectados com o complexo Mycobacterium avium (MAC), seu poder de discriminação entre rebanhos infectados com MAC e Mycobacterium bovis, e para estudar diferentes critérios de leitura e interpretação. Foram realizados três experimentos com rebanhos infectados naturalmente com MAC, com suínos inoculados com MAC e com suínos inoculados com M. bovis. Os testes foram comparados com a presença ou não de lesões macro e/ou microscópicas nos linfonodos de suínos em idade de abate. Verificaram-se reações cruzadas entre os testes intradérmicos, tanto com animais infectados com o MAC como com M. bovis. Reações acima de 0,5cm de diâmetro ou acima de 0,20cm no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Suínos; Tuberculina; Mycobacterium avium; Mycobacterium bovis. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000500002 |
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| Issa,Marina de Azevedo; Soares Filho,Paulo Martins; Fonseca Júnior,Antônio Augusto; Hodon,Mikael Arrais; Santos,Lílian Cristian dos; Reis,Jenner Karlisson Pimenta dos; Cerqueira Leite,Rômulo. |
| Abstract For the definitive diagnosis of bovine tuberculosis, isolation of the etiologic agent is required. However, there is no consensus on the best methodology for isolation of Mycobacterium bovis in Brazil. This study evaluated the most used decontaminants and culture media in the country, in order to identify the best combination for the Brazilian samples. Three decontaminants - 2% sodium hydroxide (w/v), 0.75% hexadecylpiridinium chloride (w/v) and 5% sulphuric acid (v/v) and four culture media - 7H11 Middlebrook with additives and OADC supplement “A” (7H11 A), the same media with another supplement trademark (7H11 B), tuberculosis blood agar (B83) and Stonebrink's medium were compared. Regarding the isolation, there were no significant differences... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycobacterium bovis; Diagnosis; Middlebrook 7H11; Isolation; Sulphuric acid. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100139 |
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| Ambrosio,Simone Rodrigues; Oliveira,Eugenia Márcia de Deus; Rodriguez,Cesar Alejandro Rosales; Ferreira Neto,José Soares; Amaku,Marcos. |
| Sixty samples of tissue fragments with lesions suggestive of tuberculosis from bovine abattoirs, kept in saturated solution of sodium borate, were subjected to four treatments: 4% NaOH (Petroff Method), 12 % H2SO4 and 1.5% HPC (1-Hexadecylpyridinium Chloride) decontamination, and physiological saline solution (control). The HPC method showed the lowest contamination rate (3%) when compared to control (88%, p<0.001), NaOH (33%, p<0.001) and H2SO4 (21.7%, p<0.002). Regarding the isolation success, the HPC method was better (40%) than the control (3%, p<0.001), NaOH (13%, p=0.001) and H2SO4 (1.7%, p<0.001) methods. These results indicate that HPC is an alternative to the Petroff method. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycobacterium bovis; Decontamination; Petroff; HPC. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000200008 |
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| Batista, M. S.; Cerqueira, R. B.; Sousa, E. O.; Gonçalves, V. P.; Perez, A.; Ávila, L. N.. |
| A tuberculose bovina (BTB) é uma enfermidade de caráter zoonótico, caracterizada pela formação de granulomas nodulares e apresenta importante impacto econômico e na saúde pública. Na Bahia, o estudo da prevalência e fatores de risco da tuberculose bovina (2008 a 2010), utilizando-se de métodos de tuberculinização para o diagnóstico definitivo, encontrou uma prevalência de rebanho de 1,6% (com intervalo de 0,3-2,9% a depender da região) e uma prevalência animal de 0,21% (com intervalo de 0,02-0,66%). Com a evolução do programa de controle da BTB e a redução da sua prevalência, a vigilância epidemiológica em matadouros frigoríficos assume papel importante para a identificação de focos a partir de lesões observadas durante a inspeção sanitária post-mortem de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycobacterium bovis; Diagnóstico bacteriológico; Defesa sanitária animal. |
| Ano: 2016 |
URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/31941 |
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| Alzamora Filho,F.; Reis,V.M.; Fehlberg,I.; Alcântara,A.C. de; Cavalcante,M.P.; Rocha,V.C.F.; Costa,J.N.. |
| O objetivo do presente trabalho foi utilizar métodos bacteriológicos e moleculares para a identificação do Mycobacteriumbovis em lesões observadas em carcaças de bovinos durante a inspeção post mortem de rotina em matadouros-frigoríficos com serviço de inspeção oficial. Foram acompanhados o abate e a inspeção de 825.394 bovinos, sadios, ao exame antemortem pelo serviço de inspeção oficial em 10 matadouros-frigoríficos do estado da Bahia, entre abril de 2009 e abril de 2012. Cento e oitenta bovinos apresentaram lesões sugestivas de tuberculose e outras linfadenites, as quais foram avaliadas quanto à presença de Mycobacterium bovis por exame bacteriológico e pela PCR multiplex. A maioria das lesões estava localizada em linfonodos do trato respiratório e 71%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycobacterium bovis; PCR; Bacteriologia; BAAR; Bovino. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000501585 |
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| Figueiredo,Eduardo Eustáquio de Souza; Silvestre,Flávia Galindo; Campos,Wilma Neres; Furlanetto,Leone Vinícius; Medeiros,Luciana; Lilenbaum,Walter; Fonseca,Leila Sousa; Silva,Joab Trajano; Paschoalin,Vânia Margaret Flosi. |
| Isolates from suggestive bovine tuberculosis lesions were tested by a multiplex polymerase chain reaction (m-PCR) targeting for RvD1Rv2031c and IS6110 sequences, specific for M. bovis and Mycobacterium tuberculosis complex respectively. The m-PCR successfully identified as M. bovis 88.24% of the isolates. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycobacterium bovis; Multiplex-PCR; Bovine tuberculosis. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000200004 |
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| Cavaleiro,J. S.; Trindade,B. C.; Balderramas,H. A.; Haanwinckel,M. C.; Pinto,J. G. G.; Oliveira,S. L.; Paes,A. C.. |
| Mice genetically selected for high (H) and low (L) antibody production (Selection IV-A) were used as murine experimental model. The aim of the present work was to evaluate the macrophagic activity and to characterize the immune response in Mycobacterium bovis-AN5 infected mice (3X10(7) bacteria). The response profile previously observed in such strains was not similar to that obtained during M. bovis infection; however, it corroborated works carried out using Selection I, which is very similar to Selection IV-A regarding infection by M. tuberculosis and Bacillus Calmette-Guérin (BCG). Considering bacterial recovery, L IV-A mice showed higher control of the infectious process in the lungs than in the spleen, whereas H IV-A mice presented more resistance in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Immune response; Mycobacterium bovis; Biozzi mice. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000300006 |
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| Rocha,Vivianne Cambuí Figueiredo; Figueiredo,Salomão Cambuí de; Rosales,Cesar Alejandro Rodriguez; Porto,Camila Dias; Sequeira,Julio Lopes; Ferreira Neto,José Soares; Paes,Antônio Carlos; Salgado,Vanessa Riesz. |
| Abstract Tuberculosis (TB) is a chronic disease caused by bacteria belonging to the Mycobacterium tuberculosis complex (MtbC). This disease rarely affects dogs. Canine infections are usually caused by M. tuberculosis. Mycobacterium bovis infections are rare in dogs and associated with consumption of raw milk or contaminated products. Here, we report a Boxer dog who had a M. bovis infection and was admitted to a Brazilian veterinary hospital with a presumptive diagnosis of chronic ehrlichiosis. Despite receiving treatment for chronic ehrlichiosis, it progressed to death. TB was diagnosed during post-mortem examinations using histopathological analysis. Ziehl-Neelsen staining revealed acid-fast bacilli in the kidneys, liver, mesentery, and a mass adhered to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tuberculosis; Dog; Mycobacterium bovis. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100109 |
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| Leal,Maria Betania Batista; Baruque-Ramos,Júlia; Hiss,Haroldo; Paz,Marcelo Fossa da; Sakai,Maria Cristina; Vassoler,Umbelina Macedo; Arauz,Luciana Juncioni de; Raw,Isaías. |
| The influences of the L-asparagine and glycerol initial concentrations in Sauton medium on the productivities of biomass and colony forming units were studied. The submerged batch cultivations of Mycobacterium bovis were carried out in a 20 L bioreactor. The L-asparagine and glycerol initial concentrations of 4.54 g/L and 25 mL/L, respectively, corresponded to the best biomass productivity, namely 2.5 g/L.day. On the other hand, the concentrations of 2.27 g/L and 25 mL/L, respectively, led to the highest productivity in terms of colony forming units, namely 2.7·10(6) colonies/mg.day. In addition, by means of the relative consumption analysis of L-asparagine and glycerol (50 and 26% respectively), it was concluded that the concentrations of such components... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: BCG; Mycobacterium bovis; Culture medium; Vaccine; Submerged batch cultivation. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000300013 |
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| Lilenbaum,Walter; Ferreira,Rachel; Marassi,Carla Dray; Ristow,Paula; Oelemann,Walter Martins Roland; Fonseca,Leila de Souza. |
| Forty-four cows from five herds infected with tuberculosis (TB) and without paratuberculosis (PTB), and 21 cows from a herd without either infection were studied. The cattle presented concordant results in both the skin test and gamma-interferon assay for TB and two commercial ELISAs for PTB. Animals were divided according to TB test results into Group A with 28 TB-infected animals, Group B with 16 TB-negative animals from infected herds, and Group C with 21 TB-negative cows from a tuberculosis-free herd (which were used as controls). Twenty of 28 animals from Group A (71.4%), 6/16 from Group B (37.5%) and none from Group C were reactive to PTB ELISAs, suggesting that these commercial kits were unable to distinguish between PTB and TB. It is proposed that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Paratuberculosis; Tuberculosis; Mycobacterium bovis; Mycobacterium avium paratuberculosis. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000300016 |
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| Ramos,Joelson Marcolino; Heinemann,Marcos Bryan; Ferreira Neto,José Soares; Filho,Antônio Francisco de Souza; Cárdenas,Nicolás Céspedes; Alves,Clebert José; Azevedo,Sérgio Santos de. |
| ABSTRACT: Milk samples from 16 cows that tested positive on the tuberculin test in the state of Paraíba, northeastern Brazil, were used for mycobacteria isolation and identification. Mycobacteria were isolated from five (31.25%) of the 16 milk samples; three samples were classified as M. bovis, and two as belonging to the Mycobacterium genus. This is probably the first study of isolation and identification of M. bovis in milk from cows in Northeastern Brazil, which suggests that humans are at risk of contamination by ingestion. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Mycobacterium bovis; Isolation; Milk; PCR; Cattle. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001202166 |
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| Ramos,Daniela Fernandes; Silva,Ana Bárbara Scholante; Fagundes,Michel Quevedo; von Groll,Andrea; Silva,Pedro Eduardo Almeida da; Dellagostin,Odir Antônio. |
| Bovine tuberculosis is a major infectious disease of the cattle. In this study, 85 M. bovis isolates from 162 lymph nodes, obtained from a herd of cattle on a farm in southern Brazil, were evaluated using spoligotyping and VNTR. The strains were grouped into five clusters and five orphans, showing a heterogenic genetic profile, what could represent diverse geographic origins of the introduced cows and/or the frequent movement of cattle between different properties. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovine tuberculosis; Mycobacterium bovis; Genotyping. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200039 |
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| Registros recuperados: 26 | |
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