Ciclosporin is clinically effective in a variety of inflammatory skin diseases. We have therefore studied the effects of the drug on cutaneous inflammation in mice. Ciclosporin inhibited the inflammatory response to 12-O-tetradecanoylphorbol-13-acetate (TPA) and to the contact sensitising agent oxazolone when applied topically to mouse skin. The drug had no effect on arachidonic acid-induced inflammation. The protein synthesis inhibitor cycloheximide showed a similar profile of activity. Ciclosporin, like actinomycin D but unlike cycloheximide, was only effective in inhibiting the inflammatory response to TPA if given 0.5 h before, but not 2 h, after TPA. These results suggest that the anti-inflammatory activity of ciclosporin in the skin is due to an effect on the production of proinflammatory proteins.

Keywords:
Ciclosporin, Protein synthesis inhibitors, Skin inflammation
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© 1989 S. Karger AG, Basel
1989
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