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Doctoral Thesis
DOI
https://doi.org/10.11606/T.10.2013.tde-28112013-172644
Document
Author
Full name
Andrea Isabel Estevez Garcia
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2013
Supervisor
Committee
Richtzenhain, Leonardo José (President)
Brandão, Paulo Eduardo
Cunha, Elenice Maria Sequetin
Kawai, Juliana Galera Castilho
Sakamoto, Sidnei Miyoshi
Title in Portuguese
Análise filogenética de amostras de vírus da raiva procedentes de herbívoros da região fronteiriça entre o nordeste do Estado de São Paulo e o Sul de Minas Gerais, Brasil no período de 2000-2009
Keywords in Portuguese
análise filogenética
bovinos
glicoproteína
nucleoproteína
raiva bovina
Abstract in Portuguese
No Brasil a raiva dissemina-se de maneira insidiosa nos herbívoros domésticos, produzindo perdas à indústria pecuária. No estado de São Paulo, a última epizootia registrada ocorreu entre os anos 1997-2002, acometendo bovinos e equinos. Este estudo examinou a possível relação de alguns casos detectados no sul de Minas Gerais no período 2000 a 2009 com o foco paulista citado, mediante análise filogenética de segmentos do gene da glicoproteína (540 nucleotídeos) e nucleoproteína (416 nt) viral, usando o algoritmo de Neighbor-joining, modelo evolutivo Kimura 2- parâmetros com 1000 replicações, considerando sequências de isolados procedentes de diferentes regiões do interior paulista e do Brasil, tomadas do GenBank. Foi proposta uma análise geográfica mediante o programa ArcGis, localizando as coordenadas geográficas dos municípios de origem dos casos sobre mapas de relevo, bacias hidrográficas e distribuição de biomas. A análise filogenética dos dois genes estudados sugeriu que os focos mineiros podem ter a mesma origem genética da última epizootia paulista de raiva em herbívoros ocorrida entre 1997 e 2002. A análise filogenética baseada na nucleoproteína mostrou um maior nível de detalhamento sugerindo a ocorrência de diferentes eventos e/ou centros de dispersão de raiva em herbívoros na área de estudo. A análise geográfica insinuou que os casos aconteceram nas porções menos elevadas da Serra da Mantiqueira, na área de Mata Atlântica e em proximidades das bacias dos rios Piracicaba/Jaguarí, Paranaíba do Sul, Grande, Pardo e Mogi-Guaçu.
Title in English
Phylogenetic analysis of rabies virus isolates from herbivores from border region between northeast of São Paulo State and South of Minas Gerais, Brazil, from 2000 to 2009
Keywords in English
Desmodus rotundus
bovine rabies
glycoprotein
nucleoprotein
phylogenetic analysis
Abstract in English
Bovine rabies is still spreading insidiously in Brazil, producing economic losses to livestock industry. A remarkable epizootics took place in São Paulo state between 1997 and 2002, affecting bovine and equines. This research was intended to examine genetic relations among some rabies outbreaks in Minas Gerais (MG), during 2000 and 2009 with São Paulo epizootics by phylogenetic analysis based on glycoprotein (540 nucleotides) and nucleoprotein (416 nt) genes partial sequences using Neighbor- joining algorithm, Kimura 2-parameters model, with 1000 bootstrap replications, considering sequences from different regions of São Paulo State (SP) and Brazil from GenBank. A geographic analysis was proposed, plotting geographic coordinates of municipalities with rabies cases on topographic, hydrographic and biome maps using ArcGis software. Phylogenetic analysis for both genes suggested that cases from MG can have the same genetic origin of SP epizootics. Phylogenetic analysis based on nucleoprotein gene showed a richer level of detailing than glycoprotein gene, suggesting different events and/or dispersion centers of livestock rabies in the studied area. Geographic analysis proposed that MG cases occurred at less elevated portions of Serra da Mantiqueira mountains in the area of Atlantic forest, near Piracicaba/Jaguarí, Paranaíba do Sul, Grande, Pardo and Mogi-Guaçu rivers.
 
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Publishing Date
2014-08-20
 
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