IngentaConnect A novel ATX-S10(Na) photodynamic therapy for human skin tumors an...

Authors: Hidetoshi Takahashi¹; Yasuhiro Itoh¹; Susumu Nakajima²; Isao Sakata³; Hajime Iizuka¹

Source: Photodermatology Photoimmunology & Photomedicine, Volume 20, Number 5, October 2004 , pp. 257-265(9)

Abstract:

Background/purpose:

Photodynamic therapy (PDT) is a promising treatment for various skin tumors and other skin diseases. We investigated the potential therapeutic effects of PDT using ATX-S10(Na) ointment and a diode laser in mouse skin models of experimental skin tumors as well as transplanted human samples of superficial skin tumors and lesional psoriatic skin. Methods:

ATX-S10(Na) ointment (1% w/v) was introduced into tape-stripped mouse skin, transplanted squamous cell carcinoma (SCC) samples and human skin diseases after topical application, then PDT was performed. Results:

ATX-S10(Na) ointment (1% w/v) was introduced effectively into tape-stripped mouse skin and transplanted SCC samples after topical application, but was not detected after 48 h, as assessed by fluorescence microscopy. PDT, using 1% ATX-S10(Na) ointment and diode laser (50 J/cm²), was found to decrease epidermal thickness in 12-0-tetradecanoylphorbol-13-acetate (TPA)-treated mouse skin by 6 days. PDT with 1% ATX-S10(Na) ointment and diode laser (150 J/cm²) was also effective for transplanted SCC, and tumors were eliminated by 6 weeks. PDT against Bowen disease, basal-cell carcinoma, and psoriasis xenografts onto SCID mice also showed marked suppression of tumor growth and cell proliferation, respectively. Conclusion:

Our results indicate that ATX-S10(Na)-PDT is an effective treatment for various skin tumors and psoriasis in experimental mouse models.

Keywords: ATX-S10(Na); PDT; skin diseases

Document Type: Research article

DOI: 10.1111/j.1600-0781.2004.00108.x

Affiliations: 1: Department of Dermatology, Asahikawa Medical College, 2-1-1-1 Midorigaokahigashi, Asahikawa 078-8510, Japan, 2: Health Care Administration Center, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro 080-8555, Japan, and 3: Photochemical Co. Ltd, 5319-1 Haga, Okayama 701-1221, Japan

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A novel ATX-S10(Na) photodynamic therapy for human skin tumors and benign hyperproliferative skin