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p53 Patches are not increased in patients with multiple nonmelanoma skin cancers


, : p53 Patches are not increased in patients with multiple nonmelanoma skin cancers. Journal of Investigative Dermatology 117(5): 1324-1325

Psoriasis may be treated with ultraviolet B from lamps that have a broad emission spectrum or, more effectively, with lamps that have a narrow emission spectrum at 311 +/- 2 nm. There are conflicting reports of either greater or lesser burning episodes with narrow-band compared to broad-band ultraviolet B, even when treatments are based on predetermined minimal erythema dose measurements. This suggests that either the characteristics of the dose-response curve for erythema or the time course for erythema may be different for the two lamps. We examined the erythemal response to narrow-band and broad-band ultraviolet B in 12 patients with psoriasis. A geometric series of 10 doses from each lamp type were used on nonlesional skin on the back. Dose-response curves were constructed from reflectance measurements of erythema at 24 h and 72 h after irradiation. No significant difference was found in steepness of the erythema dose-response curve for the two lamps at 24 or 72 h. Persistence of erythema was assessed as the percentage of erythema remaining at 72 h. The mean persistence was 63% for narrow-band and 64% for broad-band lamps (p = 0.94). Therefore, in terms of erythemal response, no evidence has been found for a difference in burning potential for the two lamps.

US$19.90

PMID: 11710953

DOI: 10.1046/j.1523-1747.2001.t01-1-15292.x


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