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  • Title: Effect of anti-inflammatory compounds on edema formation and myeloperoxidase activity in the arachidonic acid-induced ear model in the mouse.
    Author: Kotyuk B, Raychaudhuri A, DiPasquale G.
    Journal: Agents Actions; 1993; 39 Spec No():C46-8. PubMed ID: 8273582.
    Abstract:
    The arachidonic acid (AA)-induced ear edema model in the mouse has been demonstrated as an effective in vivo experimental tool to screen compounds showing anti-inflammatory activity. Since neutrophil influx is a component of the inflammatory reaction, we have modified this assay by quantitating myeloperoxidase (MPO) levels which reflect neutrophil accumulation in the edematous biopsies of the mouse ear. Our work has shown that orally administered 5-lipoxygenase inhibitors, dual inhibitors (CO/LO), and steroids dose-dependently inhibit both edema formation and MPO activity, whereas oral activity is not seen with NSAID's. There is a good correlation between the inhibition of edema formation and of MPO activity by these compounds. Thus, measurement of MPO, in addition to the AA-induced edema in the mouse ear, can provide another parameter to profile potential anti-inflammatory compounds.
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