Abstract
Inflammation and hyperplasia are frequently associated in skin diseases. In order to verify this relationship, we studied the antagonistic effect of different classes of antiinflammatory agents on the inflammatory and hyperplasiogenic responses elicited by one topical application of 12-O-tetradecanoylphorbol-13-acetate (TPA) to the ear of the guinea-pig. Edema and DNA synthesis were chosen as relevant parameters. All antiinflammatory agents tested significantly inhibited DNA synthesis induced by TPA. Moreover, all compounds except quinacrine and phenylbutazone also inhibited edema formation. In conclusion, our results demonstrate that while edema and hyperplasia are frequently associated, this is not always the case.
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