作者:Natalia Girón、Elisa Pérez-Sacau、Raquel López-Fontal、Juan M. Amaro-Luis、Sonsoles Hortelano、Ana Estevez-Braun、Beatriz de las Heras
DOI:10.1016/j.ejmech.2010.04.007
日期:2010.7
In the present study, a series of labdane derivatives (2-9) were prepared from labdanediol (1) and their potential as anti-inflammatory agents were evaluated on lipopolysaccharide (LPS)-treated RAW 264.7 macrophages. All compounds were able to inhibit LPS-induced nitric oxide (NO), although compounds 1, 2, 5, 8 and 9 exhibited the most potent effects with a range of IC50 values of 5-15 mu M. Similarly to the inhibitory effects on NO release, these labdane derivatives also inhibited prostaglandin E-2 (PGE(2)) production. However, analysis of cell viability demonstrated that effects on NO release and (PGE(2)) production of compounds 1, 8 and 9 were due to citotoxicity, whereas compound 2 and 5 did not show any effect in the survival of RAW 264.7 macrophages. In addition to these in vitro data, compound 5 also showed anti-inflammatory activity in vivo, when tested in mice. They prevented the extent of swelling in the TPA-induced ear edema model and inhibited MPO activity, showing similar potency to that of the widely used anti-inflammatory drug indomethacin. These results indicate that compound 2 and in particular compound 5 might be used for the design of new anti-inflammatory agents. (C) 2010 Elsevier Masson SAS. All rights reserved.