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Doctoral Thesis
DOI
10.11606/T.10.2005.tde-25102006-154614
Document
Author
Full name
Cesar Alejandro Rosales Rodriguez
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2005
Supervisor
Committee
Ferreira Neto, José Soares (President)
Brandão, Paulo Eduardo
Ferreira, Fernando
Homem, Valéria Stacchini Ferreira
Vasconcellos, Silvio Arruda
Title in Portuguese
Sistema de detecção de focos de tuberculose bovina no Estado de São Paulo utilizando métodos moleculares e epidemiológicos
Keywords in Portuguese
Epidemiologia
MIRU-VNTR
Mycobacterium bovis
Spoligotyping
Tuberculose bovina
Abstract in Portuguese
Foi estabelecida uma parceria entre o Departamento de Medicina Veterinária Preventiva e Saúde Animal (VPS) da FMVZ-USP, a Coordenadoria de Defesa Agropecuária do Estado de São Paulo e o Serviço de Inspeção Federal (SIF) para organizar um sistema capaz de detectar focos de tuberculose bovina no Estado, com base nas rotinas de inspeção de carcaças em abatedouros, cujos objetivos foram: 1) conhecer a diversidade genética de isolados de Mycobacterium bovis em bovinos no Estado de São Paulo; 2) estudar a distribuição espacial desses focos; 3) estudar a tipologia das unidades de criação de bovinos caracterizadas como focos de tuberculose; 4) verificar se é possível, com a atual infra-estrutura existente em São Paulo, operar um sistema de vigilância para detecção de focos de tuberculose bovina. Assim, foi estruturado um sistema de coleta, envolvendo as redes SISP (Sistema de Inspeção do Estado de São Paulo) e SIF, que realizou as coletas de materiais e informações de maio de 2002 a janeiro de 2004. Todo o material seguiu para o VPS, onde foram processados. As propriedades caracterizadas como focos foram rastreadas e delas foi coletada outro conjunto de informações. Seguem os resultados alcançados: 1) foram identificados 33 diferentes espoligotipos dentre os 248 isolados de M. bovis de bovinos no Estado de São Paulo. Os isolados do espoligotipo SB0295 foram re-discriminados em 13 novos perfis genéticos de M. bovis pela técnica MIRU-VNTR; 2) dentre os dois espoligotipos mais prevalentes estudados (SB0295 e SB0121), apenas o SB0295 apresentou-se de forma agrupada nas análises espaciais; 3) foram geradas várias informações sobre a tipologia e o manejo das unidades de criação de bovinos caracterizadas como focos de tuberculose; 4) a atual infra-estrutura existente no Estado de São Paulo foi capaz de operar um sistema de detecção de focos de tuberculose bovina
Title in English
A molecular and epidemiological based-work system for detection of bovine tuberculosis focus in the state of São Paulo
Keywords in English
Bovine tuberculosis
Epidemiology
MIRU-VNTR
Mycobacterium bovis
Spoligotyping
Abstract in English
A partnership between the Department of Preventive Veterinary Medicine and Animal Health (VPS) of the FMVZ-USP, the Coordination of Agriculture and Animal Defense of the State of São Paulo, and the Federal Inspection Service (SIF) was established to organize a work system for detection of bovine tuberculosis focus in the state, based on routine methods of carcass inspection in the abattoir, with the following objectives: 1) to determine the genetic diversity of the isolates of Mycobacterium bovis from bovines in the state of São Paulo; 2) to study the spatial distribution of the focuses; 3) to study the typology of the bovine breading units (farms), which were characterized as tuberculosis focus; 4) to verify the possibility of operating a surveillance system for detection of bovine tuberculosis focus based on the current network in the state of São Paulo. Thus, it was performed a system for data collection involving the current systems SISP (System of Inspection of the State of São Paulo) and SIF, who performed the collection of biological samples and information from May 2002 to January 2004. All samples were addressed to the VPS, where they were processed. Farms characterized as focus were traced to obtain new information. The results obtained in this study follow: 1) A total of 33 different spoligotypes were determined out of 248 bovine isolates of M. bovis in the state of São Paulo. The spoligotype SB0295 isolates were re-discriminated into 13 new M. bovis genetic profiles by the MIRU-VNTR technique; 2) From the two most prevalent spoligotypes analyzed in this study (SB0295 e SB0121), only SB0295 showed a cluster presentation by the spatial analyses; 3) Several information about typology and bovine breeding unit management were generated regarding the status of tuberculosis focus; 4) the current network in the state of São Paulo was capable of operating a system for detection of bovine tuberculosis focus
 
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Publishing Date
2006-11-17
 
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