The local anti‐inflammatory action of dexamethasone in the rat carrageenin oedema model is reversed by an antiserum to lipocortin 1

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Abstract
A local pre‐injection of 1 μg dexamethasone sodium phosphate strongly inhibited (> 60% inhibition at 3 h; P < 0.001 at all time points) the development of carrageenin‐induced paw oedema in the rat induced by a subplantar injection of 0.1 ml, 2% carrageenin. Coinjection of a polyclonal rabbit antiserum raised against human 1–188 recombinant lipocortin 1, which also recognised the rat protein, reversed the inhibitory action of dexamethasone (P < 0.05 at 4 h and 5 h). At the highest volume used (40 μl) control antisera were without any effect. These data further support the concept that lipocortin 1 is involved in the anti‐inflammatory mechanism of action of the glucocorticoids.