Experimental murine mycobacteriosis: evaluation of the functional activity of alveolar macrophages in thalidomide- treated mice

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dc.contributor.authorArruda, M.S.P. [UNESP]
dc.contributor.authorRichini, V.B. [UNESP]
dc.contributor.authorOliveira, S.M.A. [UNESP]
dc.contributor.authorVilani-Moreno, F.R.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionInstituto Lauro de Souza Lima (ILSL)
dc.date.accessioned2014-05-20T13:25:43Z
dc.date.available2014-05-20T13:25:43Z
dc.date.issued2004-04-01
dc.description.abstractThalidomide is a selective inhibitor of tumor necrosis factor-alpha (TNF-alpha), a cytokine involved in mycobacterial death mechanisms. We investigated the role of this drug in the functional activity of alveolar macrophages in the presence of infection induced by intranasal inoculation of Mycobacterium avium in thalidomide-treated and untreated adult Swiss mice. Sixty animals were inoculated with 5 x 10(6) M. avium by the respiratory route. Thirty animals received daily thalidomide (30 mg/kg mouse) and 30 received water by gavage up to sacrifice. Ten non-inoculated mice were used as a control group. Lots of animals from each group were evaluated until 6 weeks after inoculation. Infection resulted in an increased total number of inflammatory cells as well as increased activity of pulmonary macrophages. Histologically, intranasal inoculation of bacilli resulted in small mononuclear infiltrates located at the periphery of the organ. Culture of lung fragments revealed the presence of bacilli only at the beginning and at the end of the experimental period. Thalidomide administration did not affect the microbiological or histological features of the infection. Thalidomide-treated and untreated animals showed the same amount of M. avium colonies 3 weeks after infection. Although it did not affect bacillary clearance, thalidomide administration resulted in a decreased percent of spread cells and release of hydrogen peroxide, suggesting that factors other than TNF-alpha play a role in the killing of mycobacteria by alveolar macrophages. Thalidomide administration also reduced the number of spread cells among resident macrophages, suggesting a direct effect of the drug on this phenomenon.en
dc.description.affiliationUniversidade Estadual Paulista Faculdade de Ciências Departamento de Ciências Biológicas
dc.description.affiliationInstituto Lauro de Souza Lima Equipe Técnica de Imunologia
dc.description.affiliationUnespUniversidade Estadual Paulista Faculdade de Ciências Departamento de Ciências Biológicas
dc.format.extent485-492
dc.identifierhttp://dx.doi.org/10.1590/S0100-879X2004000400005
dc.identifier.citationBrazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 37, n. 4, p. 485-492, 2004.
dc.identifier.doi10.1590/S0100-879X2004000400005
dc.identifier.fileS0100-879X2004000400005.pdf
dc.identifier.issn0100-879X
dc.identifier.scieloS0100-879X2004000400005
dc.identifier.scopus2-s2.0-2442455664
dc.identifier.urihttp://hdl.handle.net/11449/8179
dc.language.isoeng
dc.publisherAssociação Brasileira de Divulgação Científica (ABRADIC)
dc.relation.ispartofBrazilian Journal of Medical and Biological Research
dc.relation.ispartofjcr1.492
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectMycobacterium aviumen
dc.subjectAlveolar macrophagesen
dc.subjectThalidomideen
dc.subjectExperimental infectionen
dc.titleExperimental murine mycobacteriosis: evaluation of the functional activity of alveolar macrophages in thalidomide- treated miceen
dc.typeArtigo
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências, Baurupt
unesp.departmentCiências Biológicas - FCpt

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