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Proceedings Paper

Relevance of nitric oxide to the response of tumors to photodynamic therapy
Author(s): Mladen Korbelik; Hiroshi Shibuya; Ivana Cecic
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Paper Abstract

Oxidative stress is the term used for a sudden and intense exposure of living tissue to reactive oxygen radicals. Tumor tissue response to oxidative stress, invoked in the action of photodynamic therapy (PDT) and some other modalities for cancer treatment, at the level of vascular endothelium has important therapeutic implications. Nitric oxide (NO), a transient radical species which is an important bioregulatory molecule involved in a diverse array of physiological events, has important functions in the regulation of progression of cancerous growth. Response to cancer therapies associated with the induction of oxidative stress was suggested to be amenable to NO mediation. Events involved in antitumor effects of PDT that can be markedly affected by changes in NO availability are listed. The correlation between endogenous NO production in tumors and the response of these lesions to PDT is discussed. Results of treatments aimed at modulating NO levels in PDT treated tumors are reviewed and evaluated.

Paper Details

Date Published: 19 May 1998
PDF: 8 pages
Proc. SPIE 3247, Optical Methods for Tumor Treatment and Detections: Mechanisms and Techniques in Photodynamic Therapy VII, (19 May 1998); doi: 10.1117/12.308136
Show Author Affiliations
Mladen Korbelik, British Columbia Cancer Agency (Canada)
Hiroshi Shibuya, British Columbia Cancer Agency (Canada)
Ivana Cecic, British Columbia Cancer Agency (Canada)


Published in SPIE Proceedings Vol. 3247:
Optical Methods for Tumor Treatment and Detections: Mechanisms and Techniques in Photodynamic Therapy VII
Thomas J. Dougherty, Editor(s)

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