alexa Modified topical photodynamic therapy of superficial skin tumors, utilizing aminolevulinic acid, penetration enhancers, red light, and hyperthermia.
Chemical Engineering

Chemical Engineering

Journal of Analytical & Bioanalytical Techniques

Author(s): Harth Y, Hirshowitz B, Kaplan B

Abstract Share this page

Abstract BACKGROUND: Photodynamic therapy (PDT) is a noninvasive selective therapy for a specific group of skin tumors. OBJECTIVE: In this study we used a modified topical medication in which ethyleneamine tetra acetic acid (EDTA) and dimethylsulphoxid (DMSO) were added to 5-aminolevulinic acid 20\% (ALA) followed by exposure to a novel high output light source emitting red and infrared irradiation. METHODS: ALA 20\%-EDTA 2\%-DMSO 2\% in a water in oil cream base was applied to the tumors. After 12 hours the tumor was exposed to red (585-720 nm; 150 mW/cm2) and near infrared irradiation (1.25-1.6 mm; 50 mW/cm2) for 10-15 minutes by the VersaLight incoherent filtered light source. RESULTS: Complete responses were achieved after one to three ALA-PDT treatments in 26/31 lesions of superficial or small nodular basal cell carcinoma (BCC) (84\%), and in four of five in superficial squamous cell carcinoma (SCC) (80\%). Complete clearance was achieved in one patient with Bowen's disease of the penis. CONCLUSIONS: Topical PDT utilizing ALA 20\%-EDTA 2\%-DMSO 2\% as the photosensitizer and VersaLight as the light source is a noninvasive, nearly painless treatment with excellent therapeutic and cosmetic results. Our data show the efficiency of this therapy for patients with certain subtypes of BCC, SCC, and Bowen's disease.
This article was published in Dermatol Surg and referenced in Journal of Analytical & Bioanalytical Techniques

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Relevant Topics

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version