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Master's Dissertation
DOI
https://doi.org/10.11606/D.42.2009.tde-07072009-114219
Document
Author
Full name
Débora Mathias de Siqueira
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2009
Supervisor
Committee
Ribeiro Filho, Orlando Garcia (President)
Isaac, Lourdes
Oliveira, Silvio Luis de
Title in Portuguese
Estudo da correlação entre a expressão de genes reguladores do estado de hipóxia e a intensidade da resposta inflamatória aguda.
Keywords in Portuguese
Camundongos
Fator induzível por hipóxia 1a (Hif-1a)
Genes reguladores
Hipóxia
Inflamação
Receptores aryl de hidrocarbonetos (Ahr)
Abstract in Portuguese
A hipóxia ocorre quando a demanda de oxigênio molecular necessário para gerar ATP é insuficiente. Os genes ativados por hipóxia compreendem o gene Hif-1a (Hipóxia-fator induzível 1a), Vegf-a (fator de crescimento endotelial vascular a), Arnt e Vhl (von Hippel-Lindau). Neste estudo foram utilizadas linhagens de camundongos geneticamente selecionados para alta (AIRmax) ou baixa (AIRmin) resposta inflamatória aguda (AIR). Foram realizados testes biológicos para caracterizar as reações inflamatórias produzidas por Biogel e TPA, bem como o tipo PAH cancerígeno. Testamos a expressão de mRNA de genes de hipóxia e caracterização de polimorfismo da região codificadora do Hif-1a no cromossomo 12. Camundongos AIRmax demonstraram uma maior reação inflamatória que os AIRmin para biogel e TPA enquanto o inverso foi observado com o DMBA. Os conjuntos de dados de fenótipos, expressão gênica e polimorfismo candidatam a região do cromossomo 12, que contém, entre outros, o gene Hif-1a, como participante da regulação da AIR.
Title in English
Study the function of genes regulating the hypoxia state in determining the intensity inflammatory response.
Keywords in English
Aryl hydrocarbon receptor (Ahr)
Hypoxia
Hypoxia-inducible factor 1a (Hif-1a)
Inflammation
Mice
Regulator genes
Abstract in English
Hypoxia occurs when the demand for molecular oxygen necessary to generate ATP is insufficient. Genes activated by hypoxia comprise the Hif-1a gene (Hypoxia-Inducible Factor 1a), Vegf-a (Vascular Endothelial Growth Factor a), Arnt and Vhl (von Hippel-Lindau). In this study we used lines of mice genetically selected for high (AIRmax) or low (AIRmin) acute inflammatory response (AIR). We conducted biological tests to characterize the inflammatory reactions produced by Biogel and TPA, and the type PAH carcinogen. We tested the mRNA expression of genes of hypoxia and characterization of polymorphism of the coding region of Hif-1a gene on chromosome 12. We found that the mice AIRmax had greater intensity of the inflammatory reaction that AIRmin to biogel and TPA while the reverse was observed with the DMBA. The data sets of phenotypes, gene expression and polymorphism applying the region of chromosome 12 that contains, among others, the gene Hif-1a, as part of the regulation of AIR.
 
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Publishing Date
2009-08-17
 
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