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Topical chemoprevention of skin cancer in mice, using combined inhibitors of 5-lipoxygenase and cyclo-oxygenase-2.

Author(s): Fegn L, Wang Z

Affiliation(s): *Department of Otolaryngology Head and Neck Surgery, Boston Medical Center, Boston University School of Medicine, Massachusetts, USA.

Publication date & source: 2009-08, J Laryngol Otol., 123(8):880-4. Epub 2009 Feb 16.

Publication type: Research Support, N.I.H., Extramural

OBJECTIVE: Skin cancer is the most common cancer, and often occurs in the head and neck region. This study aimed to investigate whether a combination of inhibitors of cyclo-oxygenase-2 and 5-lipoxygenase, applied via a microemulsion delivery system, would be effective in topically inhibiting skin carcinogenesis. STUDY DESIGN: Randomised animal study. METHODS: Twenty-four nude mice were intradermally inoculated with carcinoma cells and then divided into three groups (eight animals each): group one received no treatment; group two received celecoxib alone; and group three received a combination of zileuton and celecoxib. Tumour incidence and growth were measured for 14 days. RESULTS: Both treatments significantly delayed the onset and development of tumours. However, the combined treatment had the best response (p < 0.01). CONCLUSION: The results clearly showed that topical treatment with either celecoxib alone or celecoxib plus zileuton significantly inhibited skin carcinogenesis, and that a combination of both agents had the best results.

Page last updated: 2009-10-20

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