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Published in: Inflammation Research 1/2013

01-01-2013 | Original Research Paper

Anti-inflammatory and anti-arthritic activities of 3,4-dihydro-2,2-dimethyl-2H-naphthol[1,2-b]pyran-5,6-dione (β-lapachone)

Authors: Marília Maria Sitônio, Carlson H. R. de Carvalho Júnior, Ingrid de A. Campos, José Bruno Nunes Ferreira Silva, Maria do Carmo Alves de Lima, Alexandre J. S. Góes, Maria Bernadete Sousa Maia, Pedro J. Rolim Neto, Teresinha G. Silva

Published in: Inflammation Research | Issue 1/2013

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Abstract

Objective and design

The purpose of this study was to evaluate the anti-inflammatory and anti-arthritic activities of 3,4-dihydro-2,2-dimethyl-2H-naphthol[1,2-b]pyran-5,6-dione (β-lapachone; β-lap) and to elucidate its probable mode of action.

Methods

Carrageenan-induced paw edema, cell migration evaluation and production of pro-inflammatory cytokines tumor necrosis factor (TNF)-α, interleukin (IL)-6 and nitric oxide were used for this study. Freund’s complete adjuvant (FCA)-induced arthritis was used as a model of chronic inflammation. β-Lap was tested in doses of 40 and 60 mg/kg, orally.

Results

In the paw edema test, the dose of 60 mg/kg gave a higher percentage inhibition of edema (49.3 %) than control. β-Lap inhibited neutrophil migration and reduced concentrations of TNF-α, IL-6 and NO in peritoneal exudates of animals with peritonitis. In the arthritis test, β-lap inhibited edema and NO production in the serum of treated animals.

Conclusion

Significant anti-inflammatory and anti-arthritic activities were observed in animals treated with β-lap. The effects of β-lap can be attributed in part to immunomodulation with reduction of pro-inflammatory cytokines and NO.
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Metadata
Title
Anti-inflammatory and anti-arthritic activities of 3,4-dihydro-2,2-dimethyl-2H-naphthol[1,2-b]pyran-5,6-dione (β-lapachone)
Authors
Marília Maria Sitônio
Carlson H. R. de Carvalho Júnior
Ingrid de A. Campos
José Bruno Nunes Ferreira Silva
Maria do Carmo Alves de Lima
Alexandre J. S. Góes
Maria Bernadete Sousa Maia
Pedro J. Rolim Neto
Teresinha G. Silva
Publication date
01-01-2013
Publisher
SP Birkhäuser Verlag Basel
Published in
Inflammation Research / Issue 1/2013
Print ISSN: 1023-3830
Electronic ISSN: 1420-908X
DOI
https://doi.org/10.1007/s00011-012-0557-0

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