A glycoprotein with anti-inflammatory properties secreted by an Aspergillus nidulans modified strain
J. venom. anim. toxins incl. trop. dis
;
13(2): 527-543, 2007. graf, tab
Artigo
em Inglês
| LILACS, SES-SP
| ID: lil-452845
ABSTRACT
Total RNA from lipopolysaccharide (LPS)-stimulated rat macrophages used to treat protoplasts from an Aspergillus nidulans strain originated the RT2 regenerated strain, whose culture supernatant showed anti-inflammatory activity in Wistar rats. The protein fraction presenting such anti-inflammatory activity was purified and biochemically identified. The screening of the fraction responsible for such anti-inflammatory property was performed by evaluating the inhibition of carrageenan-induced paw edema in male Swiss mice. Biochemical analyses of the anti-inflammatory protein used chromatography, carbohydrates quantification of the protein sample, amino acids content analysis and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Total sugar quantification revealed 32 percent glycosylation of the protein fraction. Amino acid analysis of such fraction showed a peculiar pattern presenting 29 percent valine. SDS-PAGE revealed that the protein sample is pure and its molecular weight is about 40kDa. Intravenous injection of the isolated substance into mice significantly inhibited carrageenan-induced paw edema. The isolated glycoprotein decreased carrageenan-induced paw edema in a prostaglandin-dependent phase, suggesting an inhibitory effect of the isolated glycoprotein on prostaglandin synthesis.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Aspergilose
/
Aspergillus nidulans
/
Glicoproteínas
/
Anti-Inflamatórios
Limite:
Animais
Idioma:
Inglês
Revista:
J. venom. anim. toxins incl. trop. dis
Ano de publicação:
2007
Tipo de documento:
Artigo
Instituição/País de afiliação:
Butantan Institute/BR
/
Nuclear Energy Research Institute/BR
/
University of São Paulo/BR
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