, Volume 53, Issue 12, pp 664-669

Inhibitory effects of budesonide, desloratadine and dexamethasone on cytokine release from human mast cell line (HMC-1)

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Objective: To determine the inhibitory potency of budesonide on interleukin (IL)-4, 6 and 8, GM-CSF and TNF-α release from the human mast cell line (HMC-1) in comparison with the systemic glucocorticosteroid, dexamethasone, and H1 antagonist, desloratadine.

Methods: HMC-1 was stimulated with 25 ng/ml phorbol 12- myristate 13-acetate (PMA) and 2.5 × 10−7 M ionomycin (A23187) for 6, 12 and 24 h in both the presence and absence of 10−6−10−10 M concentrations of the test drugs. Culture supernatants were collected and assayed by ELISAs.

Results: HMC-1 produced substantial amounts of GM-CSF and IL-8 and smaller amounts of TNF-α, IL-4 and IL-6 after being stimulated with PMA together with A23187. Budesonide and dexamethasone had potent inhibitory effects and desloratadine had modest inhibitory effects on the release of these cytokines. Budesonide was more potent than dexamethasone at most concentrations and time points. IL-4 was the cytokine which was most susceptible to inhibition by the three tested drugs. The inhibitory effects, in some cases, were time- and concentration-dependent.

Conclusion: Budesonide had a potent inhibitory effect on cytokine release from HMC-1. Its potency was greater than that of both dexamethasone and desloratadine.

Received 2 January 2004; returned for revision 22 April 2004; returned for final revision 10 June 2004; accepted by N. Boughton-Smith 15 July 2004