Morphological and biochemical characterization of macrophages activated by carrageenan and lipopolysaccharide in vivo

dc.creatorNacife, Valéria Pereira
dc.creatorSoeiro, Maria de Nazaré C.
dc.creatorGomes, Rachel Novaes
dc.creatorD'Avila, Heloisa
dc.creatorFaria Neto, Hugo Caire C.
dc.creatorMeirelles, Maria de Nazareth Leal
dc.date2020-03-24T18:14:54Z
dc.date2020-03-24T18:14:54Z
dc.date2004
dc.date.accessioned2023-09-26T20:40:28Z
dc.date.available2023-09-26T20:40:28Z
dc.identifierNACIFE, Valéria Pereira et al. Morphological and Biochemical characterization of macrophages activated by Carrageenan and Lipopolysaccaride In Vivo. Cell Structure and Function, v. 29, p. 27-34, 2004.
dc.identifier0386-7196
dc.identifierhttps://www.arca.fiocruz.br/handle/icict/40489
dc.identifier10.1247/csf.29.27
dc.identifier1347-3700
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8861762
dc.descriptionMacrophages are able to recognize, internalize and destroy a large number of pathogens, thus restricting the infection until adaptive immunity is initiated. In this work our aim was to analyze the surface charge of cells activated by carrageenan (CAR) and lipopolysaccharide (LPS) through light and electron microscopy approaches as well as the release of inflammatory mediators in vitro. The ultrastuctural analysis and the light microscopy data showed that in vivo administration of CAR represents a potent inflammatory stimulation for macrophages leading to a high degree of spreading, an increase in their size, in the number of the intracellular vacuoles and membrane projections as compared to the macrophages collected from untreated animals as well as mice submitted to LPS. Our data demonstrated that CAR stimulated-macrophages displayed a remarkable increase in nitric oxide production and PGE2 release as compared to the cells collected from non-stimulated and stimulated mice with LPS in vivo. On the other hand, non-stimulated macrophages as well as macrophages stimulated by LPS produce almost the same quantities of TNF-alpha, while in vivo stimulation by CAR leads to a 30-40% increase of cytokine release in vitro compared to the other groups. In conclusion, our morphological and biochemical data clearly showed that in vivo stimulation with CAR induces a potent inflammatory response in macrophages representing an interesting model to analyze inflammatory responses.
dc.formatapplication/pdf
dc.languageeng
dc.publisherJapan Society of Cell Biology
dc.rightsopen access
dc.subjectMacrófagos
dc.subjectMicroscopia eletrônica
dc.subjectCarragenina
dc.subjectReceptores de Lipopolissacarídeos
dc.subjectMacrophages
dc.subjectCarrageenan
dc.subjectLipopolysaccharide
dc.subjectElectron microscopy
dc.subjectCarragenina
dc.subjectReceptores de Lipopolissacarídeos
dc.titleMorphological and biochemical characterization of macrophages activated by carrageenan and lipopolysaccharide in vivo
dc.typeArticle


Este ítem pertenece a la siguiente institución