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Proceedings Paper

Transdermal delivery of photosensitizer by laser-induced stress wave
Author(s): Makoto Ogura; Shunichi Sato; Masahiko Kuroki; Hitoshi Wakisaka; Satoko Kawauchi; Miya Ishihara; Makoto Kikuchi; Masahiko Yoshioka; Hiroshi Ashida; Minoru Obara
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Paper Abstract

The skin permeability of most of drugs is low, because the stratum corneum works as a solid barrier. It is required, therefore, to enhance the skin permeability for transdermal delivery of drug. To investigate the effects of heating skin and exposing skin to a laser-induced stress wave (LISW) on the drug permeability, we tried to deliver porfimer sodium into rat’s skin. The experiment was performed under the four different skin conditions; exposing to a LISW (case 1); heating (case 2); exposing to a LISW and heating (case 3); control (case 4). It was observed in all cases except the case 4 (control), the drug permeated into the dermis through the epidermis. The deepest penetration was obtained in the case 3 (a LISW plus heating). It was suggested that heating increased the fluidity of the lipid bilayers in the stratum corneum, and therefore the drug permeability might be enhanced.

Paper Details

Date Published: 17 June 2002
PDF: 3 pages
Proc. SPIE 4609, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XII, (17 June 2002); doi: 10.1117/12.432076
Show Author Affiliations
Makoto Ogura
Shunichi Sato
Masahiko Kuroki
Hitoshi Wakisaka
Satoko Kawauchi
Miya Ishihara
Makoto Kikuchi
Masahiko Yoshioka
Hiroshi Ashida
Minoru Obara


Published in SPIE Proceedings Vol. 4609:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XII
Lawrence S. Bass; Abraham Katzir; Eugene A. Trowers; Timothy A. Woodward; Werner T.W. de Riese; Kenneth Eugene Bartels; Lloyd P. Tate; George M. Peavy; Michael D. Lucroy; Lawrence S. Bass; Nikiforos Kollias; Kenton W. Gregory; Udayan K. Shah; Brian Jet-Fei Wong; David S. Robinson; Hans-Dieter Reidenbach; Kenneth Eugene Bartels; Lawrence S. Bass; Werner T.W. de Riese; Kenton W. Gregory; Abraham Katzir; Nikiforos Kollias; Michael D. Lucroy; Reza S. Malek; George M. Peavy; Hans-Dieter Reidenbach; David S. Robinson; Udayan K. Shah; Lloyd P. Tate; Eugene A. Trowers; Brian Jet-Fei Wong; Timothy A. Woodward, Editor(s)

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