Abstract

Author(s): Kazusa Asai, A. Ochiai¹, N. Kawashima¹ and Y. Tokuoka¹*
Graduate School of Engineering, ¹Faculty of Biomedical Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama 225-8503, Japan

Correspondence Address:
Faculty of Biomedical Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama 225-8503, Japan, E-mail: tokuoka@toin.ac.jp

The effect of ethanol was investigated on iontophoretic transdermal delivery of 5-aminolevulinic acid through Yucatan micropig full-thickness skin. When 20 % ethanol was added into an aqueous 5-aminolevulinic acid solution, the iontophoretic permeation of 5-aminolevulinic acid through Yucatan micropig full-thickness skin was enhanced. The addition of ethanol also enlarged the partition of 5-aminolevulinic acid into Yucatan micropig full-thickness skin, which gave rise to enhancement of 5-aminolevulinic acid permeation. This result suggested that the combination system of iontophoretic delivery and 20 % ethanol could be a promising approach for the promotion of 5-aminolevulinic acid skin permeation.

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