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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Role of cyclopentenone prostaglandins in rat carrageenin pleurisy.

In this study, using rat carrageenin-induced pleurisy, we found that treatment of rats with either indomethacin or NS-398 suppressed the pleurisy at 2 h but significantly exacerbated this reaction at 48 h. Exacerbated inflammation was associated with reduced prostaglandin D(2) levels, decreased heat shock factor 1 (HSF1) activation, reduced hsp72 expression and increased activation of nuclear factor kappaB (NF-kappaB). Replacement of cyclopentenone prostaglandins by treating rats with either prostaglandin J(2) or prostaglandin D(2) reversed the exacerbating effects of cyclooxygenase inhibitors leading to the resolution of the reaction. In conclusion, we demonstrate that cyclopentenone prostaglandins may act as anti-inflammatory mediators by inducing in inflammatory cells HSF1-dependent hsp72 expression and NF-kappaB inhibition, two crucial events for the remission of inflammation.[1]

References

  1. Role of cyclopentenone prostaglandins in rat carrageenin pleurisy. Ianaro, A., Ialenti, A., Maffia, P., Pisano, B., Di Rosa, M. FEBS Lett. (2001) [Pubmed]
 
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