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Leighton, J.D. et al.

Interleukin 1- and tumor necrosis factor-stimulation of prostaglandin E2 synthesis in MDCK cells, and potentiation of this effect by cycloheximide.

The effects of interleukin (IL)-1 alpha, IL-1 beta and TNF alpha on prostaglandin-E2 synthesis in Madin-Darby canine kidney (MDCK) cells were investigated. IL-1 beta time- and dose-dependently stimulated prostaglandin-E2 synthesis. While TNF alpha produced a comparatively small but significant stimulation of PGE2 release, coincubation of IL-1 beta with TNF alpha produced a marked synergistic stimulation of PGE2 release. The effect of IL-1 beta and of IL-1 beta and TNF alpha was apparent as early as after 2 h of incubation. The enhanced PGE2 synthesis was inhibited by indomethacin as well as actinomycin D, while cycloheximide surprisingly potentiated PGE2 synthesis in response to both IL-1 beta and TNF alpha. IL-1 alpha alone was ineffective in stimulating a significant release of PGE2 at concentrations as high as 10 nM. However, it also showed a marked synergistic interaction with TNF alpha in stimulating PGE2 release.[1]

References

Interleukin 1- and tumor necrosis factor-stimulation of prostaglandin E2 synthesis in MDCK cells, and potentiation of this effect by cycloheximide. Leighton, J.D., Pfeilschifter, J. FEBS Lett. (1990) [Pubmed]

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