Journal
PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY
Volume 13, Issue -, Pages 158-174Publisher
ELSEVIER
DOI: 10.1016/j.pdpdt.2015.07.175
Keywords
Colorectal cancer; Cancer treatment; Photodynamic therapy; Preclinical research; Cell cultures; Animal experiments
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Background: Photodynamic therapy (PDT) is used in many different oncologic fields. Also in gastroenterology, where have been a few attempts to treat both the premalignant lesion and advanced colorectal cancer (CRC). This review aims to give a general overview of preclinical photodynamic studies related to CRC cells and animal studies of photodynamic effects related to CRC treatment to emphasize their potential in study of PDT mechanism, safety and efficiency to translate these results into clinical benefit in CRC treatment. Materials and method: Literature on in vitro preclinical photodynamic studies related to CRC cells and animal studies of photodynamic effects related to CRC treatment with the fallowing medical subject headings search terms: colorectal cancer, photodynamic therapy, photosensitizer(s), in vitro, cell culture(s), in vivo, animal experiment(s). The articles were selected by their relevance to the topic. Results: The majority of preclinical studies concerning possibility of PDT application in colon and rectal cancer is focused on phototoxic action of photosensitizers toward cultured colorectal tumor cells in vitro. The purposes of animal experiments are usually elucidation of mechanisms of observed photodynamic effects in scale of organism, estimation of PDT safety and efficiency and translation of these results into clinical benefit. Concluding remarks: In vitro photodynamic studies and animal experiments can be useful for studies of mechanisms and efficiency of photodynamic Method as a start point on PDT clinical research. The primary disadvantage of in vitro experiments is a risk of over-interpretation of their results during extrapolation to the entire CRC. (C) 2015 Elsevier B.V. All rights reserved.
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