Consulta: subjectFacets:"Mycobacterium bovis"
Registros recuperados: 26
Data/hora: 06/06/2024 07:59:53

A microsatellite study of bovine solute carrier family 11 a1 (Slc11a1) gene diversity in Mexico in relation to bovine tuberculosis
Provedor de dados: 74
Autores: 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

Comparação de genes de virulência de duas cepas de Mycobacterium bovis com perfis patogênicos contrastantes.
Provedor de dados: 14
Autores: CASTELÃO, A. B. C.; NISHIBE, C.; ZUMÁRRAGA, M. J.; CATALDI, A.; BIGI, F.; RAMOS, C. A. do N.; ALMEIDA, V. F.; ARAUJO, F. R.
bitstream/item/131137/1/BP33-final-em-alta.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Genes de virulência.; Mycobacterium bovis; Genoma.
Ano: 2015
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1026502

Immune response to Mycobacterium bovis-AN5 infection in genetically selected mice (selection IV-A)
Provedor de dados: 80
Autores: 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

Review: genital tuberculosis in cattle and water buffaloes
Provedor de dados: 195
Autores: Castro Nassar, Alessandra Figueiredo de; Roxo, Eliana; Castro Portuga, Manuel Alberto da Silva.
Objective: To present a review on genital tuberculosis in caule and water buffaloes. Data Sources: the collections of the libraries of the Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo - FMVZlUSP (School of Veterinary Medicine and Animal Science of the University of São Paulo) and of the Instituto Biológico de São Paulo (São Paulo Biological lnstitute), as well as MEDLlNE database were searched, covering a retrospective period of 30 years. Data Synthesis: Tuberculosis is a public health concern and an economically important disease, responsible for big losses in caule husbandry. The zoonotic aspect of tuberculosis has decreased since the introduction of obligatory milk pasteurization, except in countries where the consumption...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; Genital; Mycobacterium bovis; Infertility; Caltle; Buffaloes Tuberculosis de los genitales; Mycobacterium bovis; Infertilidad; Bovillos; Búfalos tuberculose dos genitais; Mycobacterium bovis; Infertilidade; Bovinos; Búfalos.
Ano: 2005
URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/3133

Identificação de focos de tuberculose bovina na Bahia a partir da vigilância em matadouros frigoríficos inspecionados
Provedor de dados: 195
Autores: 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

Sistema de vigilância para detecção de focos de tuberculose bovina no estado de Mato Grosso, Brasil
Provedor de dados: 195
Autores: Almeida, M. F. F. A.; Navarro, D. S. F.
O Mycobacterium bovis, membro do complexo Mycobacterium tuberculosis, é o agente causal da tuberculose bovina (TB), doença infecciosa crônica de importância em saúde pública e responsável por significativas perdas econômicas na pecuária mundial. Tendo em vista o registro da baixa prevalência da TB no Estado de Mato Grosso e a necessidade da compreensão da epidemiologia da doença na região, o presente trabalho foi delineado para detectar e rastrear focos de TB a partir dos registros de animais que apresentaram lesões sugestivas da zoonose, por ocasião do seu abate em abatedouros com Serviço de Inspeção Oficial. Entre maio e setembro de 2015 foram processados pelo Laboratório de Apoio à Saúde Animal Anibal Molina – LASA 23 amostras, colhidas em bovinos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculose; Mycobacterium bovis; Mato Grosso.
Ano: 2016
URL: http://www.revistamvez-crmvsp.com.br/index.php/recmvz/article/view/32122

Isolamento de Mycobacterium bovis em cão
Provedor de dados: 45
Autores: Mota,P.M.P.C.; Lobato,F.C.F.; Assis,R.A.; Lage,A.P.; Parreiras,P.M.
This report describes the isolation of Mycobacterium bovis from a dog with a history of co-habitation with bufallos infected with Mycobacterium bovis. After necropsy, the microrganism was isolated from a mesenteric lymphatic node in Stonebrink media and bacterial identification was confirmed by biochemical tests.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Tuberculose; Cão; Isolamento; Mycobacterium bovis.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352001000400003

Comparação entre métodos de tuberculinização no diagnóstico da infecção por agentes do complexo Mycobacterium avium ou M. bovis em suínos
Provedor de dados: 45
Autores: 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

Identificação de Mycobacterium bovis em carcaças de bovinos abatidos no estado da Bahia, Brasil, por métodos bacteriológico e molecular
Provedor de dados: 45
Autores: 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

BCGiosis as a presenting feature of a child with chronic granulomatous disease
Provedor de dados: 55
Autores: Movahedi,Zahra; Norouzi,Sayna; Mamishi,Setareh; Rezaei,Nima.
Bacillus Calmette Guerin (BCG) vaccine, which is administered to all newborns in some regions, could lead to serious complication ranging from local disease (known as BCGitis) to disseminated disease (BCGosis) in a group of patients with primary immunodeficiency diseases. We are reporting here a 3.5 year-old girl with a history of prolonged BCGitis, which developed to disseminated disease without any other special features. Immunological studies with nitro-blue tetrazolium test confirmed the diagnosis of chronic granulomatous disease in this patient. Chronic granulomatous disease should be considered in the list of differential diagnosis in all children with BCGosis, even in the absence of any other manifestations related to immunodeficiency.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: BCG vaccine; Mycobacterium bovis; Granulomatous disease; Chronic.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702011000100016

Identification of Mycobacterium bovis antigens by analysis of bovine T-cell responses after infection with a virulent strain
Provedor de dados: 56
Autores: Alito,A.; McNair,J.; Girvin,R.M.; Zumarraga,M.; Bigi,F.; Pollock,J.M.; Cataldi,A.
Purification and characterization of individual antigenic proteins are essential for the understanding of the pathogenic mechanisms of mycobacteria and the immune response against them. In the present study, we used anion-exchange chromatography to fractionate cell extracts and culture supernatant proteins from Mycobacterium bovis to identify T-cell-stimulating antigens. These fractions were incubated with peripheral blood mononuclear cells (PBMC) from M. bovis-infected cattle in lymphoproliferation assays. This procedure does not denature proteins and permits the testing of mixtures of potential antigens that could be later identified. We characterized protein fractions with high stimulation indices from both culture supernatants and cell extracts....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine tuberculosis; Antigens; Mycobacterium bovis; Cellular immunity.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003001100011

A single strain of Mycobacterium bovis bacillus Calmette-Guérin (BCG) grown in two different media evokes distinct humoral immune responses in mice
Provedor de dados: 56
Autores: 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

Effects of diazepam on Mycobacterium bovis-induced infection in hamsters
Provedor de dados: 56
Autores: Righi,D.A.; Pinheiro,S.R.; Guerra,J.L.; Palermo-Neto,J.
The in utero exposure of hamsters to low doses of diazepam results in impaired host defense against Mycobacterium bovis during adulthood. Delayed developmental immunotoxicity, however, represents a specific situation that might not be general. The present experiment was undertaken to investigate the effects of diazepam on hamster resistance to M. bovis using adult animals. The effects of diazepam treatment on serum cortisol levels were also studied. Adult hamsters (N = 10 for each group) were treated with diazepam (E1 = 1.0, E2 = 2.0 or E3 = 3.0 mg kg-1 day-1 subcutaneously) or with control solution (C) for 30 days. Seven days after the beginning of the treatment, the animals received identical inoculum concentrations of M. bovis. Hamsters treated with the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium bovis; Host resistance; Macrophages; Diazepam; Immune system.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000900014

Comparison of three decontamination methods for Mycobacterium bovis isolation
Provedor de dados: 58
Autores: 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&lt;0.001), NaOH (33%, p&lt;0.001) and H2SO4 (21.7%, p&lt;0.002). Regarding the isolation success, the HPC method was better (40%) than the control (3%, p&lt;0.001), NaOH (13%, p=0.001) and H2SO4 (1.7%, p&lt;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

Comparative study of Mycobacterium bovis primary isolation methods
Provedor de dados: 58
Autores: 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

Molecular typing of Mycobacterium bovis isolates: a review
Provedor de dados: 58
Autores: Ramos,Daniela Fernandes; Tavares,Lucas; Silva,Pedro Eduardo Almeida da; Dellagostin,Odir Antônio.
Mycobacterium bovis is the main causative agent of animal tuberculosis (TB) and it may cause TB in humans. Molecular typing of M. bovis isolates provides precise epidemiological data on issues of inter- or intra-herd transmission and wildlife reservoirs. Techniques used for typing M. bovis have evolved over the last 2 decades, and PCR-based methods such as spoligotyping and mycobacterial interspersed repetitive unit-variable number tandem repeat (MIRU-VNTR) have been extensively used. These techniques can provide epidemiological information about isolates of M. Bovis that may help control bovine TB by indicating possible links between diseased animals, detecting and sampling outbreaks, and even demonstrating cases of laboratory cross-contamination between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; Bovine; Diagnosis; Genotyping; Mycobacterium bovis.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000200001

Infection by Mycobacterium bovis in a dog from Brazil
Provedor de dados: 58
Autores: 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

Thin layer microcolony culture associated with PCR for early identification of Mycobacterium bovis
Provedor de dados: 58
Autores: Rosário,Tatiana Reis do; Dib,Cristina Corsi; Roxo,Eliana; Pinheiro,Sônia Regina; Vasconcellos,Silvio Arruda; Benites,Nilson Roberti.
The initial growth of mycobacteria from 49 samples of cattle and buffalo organs collected in commercial slaughterhouses was compared between modified Middlebrook 7H11 thin layer microcolony culture and Stonebrink medium used in the isolation of Mycobacterium bovis. Aliquots were decontaminated by Petroff's method, processed and cultured in both media. The identity of the acid-fast bacilli stained by Ziehl-Neelsen was confirmed by PCR. Optical microscopy showed that results of the early observation of Mycobacterium bovis colonies in thin layer culture were similar to those obtained in macroscopic observation of the colonies in Stonebrink medium. However, early observation of the colonies enabled early confirmation by PCR, given the shorter time to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; Mycobacterium bovis; Thin layer; PCR; Cattle and buffalo organs.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100031

Potential application of new diagnostic methods for controlling bovine Tuberculosis in Brazil
Provedor de dados: 58
Autores: Medeiros,Luciana dos Santos; Marassi,Carla Dray; Figueiredo,Eduardo Eustáquio S.; Lilenbaum,Walter.
Bovine tuberculosis, a chronic infection in cattle caused by Mycobacterium bovis, remains an economic and public health problem for several countries. Due to its economic impact on international trade, contagious nature, and implications for human health, global programs to eradicate the disease were implemented worldwide. Those programs are based on slaughtering PPD-reactive animals. Despite the National Programs in Brazil, complete eradication has not been achieved, and the disease remains, albeit at a lower prevalence. The central purpose of this review is to address diagnostic tests for tuberculosis. Considering the course of the infection in cattle, at least two tests, ideally complementary to one another, may be necessary for an adequate diagnosis:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bovine Tuberculosis; Mycobacterium bovis; Diagnosis.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000300002

Tuberculosis determined by Mycobacterium bovis in captive waterbucks (Kobus ellipsiprymnus) in São Paulo, Brazil
Provedor de dados: 58
Autores: Rocha,V.C.M.; Corrêa,S.H.R.; Oliveira,E.M.D.; Rodriguez,C.A.R.; Fedullo,J.D.; Matrone,M.; Setzer,A.; Ikuta,C.Y.; Vejarano,M.P.; Figueiredo,S.M.; Ferreira Neto,J.S.
Two waterbucks from São Paulo Zoo Foundation exhibited respiratory symptoms in July 2004. After euthanasia, granulommas in lungs and mediastinic lymph nodes were observed. Acid-fast bacilli isolated were identified as Mycobacterium bovis spoligotype SB0121 by PRA and spoligotyping. They were born and kept in the same enclosure with the same group, without any contact to other species housed in the zoo. This is the first detailed description of M. bovis infection in Kobus ellipsiprymnus.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tuberculosis; Mycobacterium bovis; Kobus ellipsiprymnus; Waterbuck; Zoo.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200040

Identification of Mycobacterium bovis Isolates by a multiplex PCR
Provedor de dados: 58
Autores: 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

Molecular typing of Mycobacterium bovis isolated in the south of Brazil
Provedor de dados: 58
Autores: 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

Interference of tuberculosis on the performance of ELISAs used in the diagnosis of paratuberculosis in cattle
Provedor de dados: 58
Autores: 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

Detection of Mycobacterium bovis DNA in nasal swabs from tuberculous cattle by a multiplex PCR
Provedor de dados: 58
Autores: Figueiredo,Eduardo Eustáquio de Souza; Carvalho,Ricardo Cezar Tavares; Silvestre,Flávia Galindo; Lilenbaum,Walter; Fonseca,Leila Sousa; Silva,Joab Trajano; Paschoalin,Vânia Margaret Flosi.
Detection of tuberculosis in cattle relies on the intradermal tuberculin test (ITT), but a definitive diagnosis requires identification of the pathogen after the animal is slaughtered. DNA in nasal swabs from 50 cows was analyzed by m-PCR, targeting for the RvD1-Rv2031c and IS6110 sequences. M. bovis was identified in two of 34 tuberculous cows (5.9%). The use of mPCR of nasal swabs as an in vivo diagnostic tool for bovine tuberculosis is suggested.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mycobacterium bovis; Multiplex-PCR; Nasal swab; Bovine tuberculosis.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000200020

Influence of initial L-asparagine and glycerol concentrations on the batch growth kinetics of Mycobacterium bovis BCG
Provedor de dados: 58
Autores: 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

Isolation and identification of Mycobacterium bovis in milk from cows in northeastern Brazil
Provedor de dados: 65
Autores: 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