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Updated: Jul 18, 2026

11:04
An In-House-Built and Light-Emitting-Diode-Based Photodynamic Therapy Device for Enhancing Verteporfin Cytotoxicity in a 2D Cell Culture Model
Published on: January 13, 2023
Chemopreventative thoughts for photodynamic therapy
1Innovaderm Research, 1851 Sherbrooke Street East, Suite 502, Montreal, QC H2K 4L5, Canada. rbissonnette@innovaderm.ca
Dermatologic Clinics
|November 28, 2006
Summary
Photodynamic therapy (PDT) using large surface application of aminolevulinic acid can prevent actinic keratoses and skin cancers. Pre-clinical and clinical studies show PDT effectively reduces the development of new skin lesions.
Area of Science:
- Dermatology
- Oncology
- Photomedicine
Background:
- Skin cancer is a significant public health concern.
- Early detection and prevention strategies are crucial.
- Photodynamic therapy (PDT) is an emerging treatment modality.
Purpose of the Study:
- To evaluate the efficacy of large surface area photodynamic therapy (PDT) for skin cancer prevention.
- To assess PDT's role in preventing actinic keratoses and non-melanoma skin cancers.
Main Methods:
- Utilized large surface application of aminolevulinic acid (ALA) or methyl aminolevulinate (MAL).
- Followed ALA/MAL application with specific light exposure protocols.
- Conducted pre-clinical studies in mouse models and recent clinical trials.
Main Results:
- Pre-clinical studies demonstrated PDT's ability to prevent actinic keratoses, squamous cell carcinomas, and basal cell carcinomas.
- Recent clinical studies suggest PDT can prevent actinic keratoses.
- Clinical data indicates a potential for PDT in preventing skin cancer development.
Conclusions:
- Large surface area PDT shows promise as a preventative strategy for actinic keratoses and non-melanoma skin cancers.
- Further clinical research is warranted to confirm PDT's role in comprehensive skin cancer prevention protocols.

