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Abidi, A. et al.

Study of reservoir effect of clobetasol propionate cream in an experimental animal model using histamine-induced wheal suppression test.

BACKGROUND: Topical corticosteroids used in various dermatological diseases several times a day led to an increase risk of side effects. By demonstrating a significant reservoir of corticosteroids in the stratum corneum, one can maximize their efficacy and safety as therapeutic agents. AIM: The study was designed to demonstrate a reservoir of topically applied corticosteroid clobetasol propionate cream experimentally in rabbits using histamine-induced wheal suppression test. MATERIALS AND METHODS: The work was carried out on albino rabbits, as rabbit skin is akin to human skin, using a topical steroid. The topical steroid clobetasol propionate 0.05% cream was applied on the back of rabbit, and after 1-h occlusion histamine-induced wheal suppression test was performed and wheal area measured at 10 min till day 7. Statistical analysis was done by ANOVA followed by "Post Hoc" test. RESULTS: Maximum wheal suppression was seen on day 1 (P < 0.001). Interday comparison of mean wheal size showed no significant difference (P > 0.05) on day 2, 3, and 4 as compared to day 1. Day 5-7 show highly significant difference (P < 0.001) as compared to day 1, thereby suggesting that the reservoir effect of topical clobetasol propionate 0.05% cream persisted till day 4. CONCLUSIONS: This work demonstrated that histamine-induced wheal by the topical steroid clobetasol propionate 0.05% cream was suppressed till day 4, indicating that the reservoir of topical corticosteroid persisted till day 4.[1]

References

Study of reservoir effect of clobetasol propionate cream in an experimental animal model using histamine-induced wheal suppression test. Abidi, A., Ahmad, F., Singh, S.K., Kumar, A. Indian. J. Dermatol (2010) [Pubmed]

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