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Master's Dissertation
DOI
https://doi.org/10.11606/D.42.2008.tde-17112008-164429
Document
Author
Full name
Andrea Gil Ferreira de Arruda
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2008
Supervisor
Committee
Starobinas, Nancy (President)
Kwasniewski, Fábio Henrique
Negro, Sonia Jancar
Title in Portuguese
Estudo comparativo da ativação de macrófagos de linhagens de camundongos geneticamente selecionados para a reatividade inflamatória aguda.
Keywords in Portuguese
Camundongos
Citocinas
Fagocitose
Imunogenética
Inflamação
Macrófagos
Abstract in Portuguese
As linhagens de camundongos selecionadas para a máxima (AIRmax) ou mínima (AIRmin) reatividade inflamatória aguda, demonstram diferenças quanto a capacidade de infiltrar neutrófilos. O projeto tem como objetivo caracterizar a atividade de macrófagos residentes ou induzidos com tioglicolato no exsudato peritoneal nestas linhagens. Nas 6h do estímulo, o tioglicolato induz migração de neutrófilos sendo o máximo de migração de macrófagos após 96h. Em ambas as linhagens, macrófagos induzidos por tioglicolato fagocitavam mais partículas de zimosan em relação a macrófagos residentes. Nos resultados pudemos observar que macrófagos da linhagem AIRmax respondem mais ao LPS em relação à expressão de TNF-a, IL-6, IL-12, IL-1b, TREM1, DAP12, e síntese de H2O2 e NO, que condiz com a alta inflamação dos AIRmax. Observamos que células residentes da linhagem AIRmin sintetizavam maiores quantidades de IL-10 e TGF-b em relação à linhagem AIRmax. Após o estímulo de tioglicolato, macrófagos da linhagem AIRmax produziam maiores quantidades de citocinas anti-inflamatórias.
Title in English
Comparative study of macrophage activation from lines of mice selected for acute inflammatory reaction.
Keywords in English
Citokines
Immunogenetics
Inflammation
Macrophages
Mice
Phagocytosis
Abstract in English
Lines of mice genetically selected for maximal (AIRmax) or minimal (AIRmin) acute inflammatory reaction (AIR) demonstrated differences in the capacity to infiltrate neutrophil cells. The aim of this work is the characterization of the activity of resident or thioglicollate-induced macrophages in the peritoneal exudates in these mice. After 6h, thioglicollate induces the migration of neutrophils being the maximal macrophage migration achieved at 96h. On both lines, thioglicollate-induced macrophages showed higher phagocytic activity of zymosan particles than resident macrophages. Macrophages from AIRmax mice produced higher response with LPS, than AIRmin cells, regarding the expression of TNF-a, IL-6, IL-12, IL-1b, TREM1, DAP12, and synthesis of H2O2 and NO, which is consistent with the high inflammation selected phenotype of AIRmax mice. We observed that resident cells from AIRmin mice secret higher amounts of IL-10 and TGF-b than AIRmax cells. After thioglicollate stimulus, macrophages from AIRmax mice produced higher levels of the anti-inflammatory cytokines.
 
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Publishing Date
2009-02-18
 
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