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Synergic effect of photodynamic therapy using talaporfin sodium with conventional anticancer chemotherapy for the treatment of bile duct carcinoma


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Title: Synergic effect of photodynamic therapy using talaporfin sodium with conventional anticancer chemotherapy for the treatment of bile duct carcinoma
Authors: Nonaka, Yoshikazu / Nanashima, Atsushi / Nonaka, Takashi / Uehara, Masataka / Isomoto, Hajime / Abo, Takafumi / Nagayasu, Takeshi
Issue Date: 15-May-2013
Publisher: Academic Press Inc.
Citation: Journal of Surgical Research, 181(2), pp.234-241; 2013
Abstract: Background: Photodynamic therapy (PDT) is an effective laser treatment for locally treating advanced bile duct carcinoma (BDC). The study objective was to evaluate the synergic effect of PDT using a new photosensitizer, talaporfin sodium (Laserphyrin), in combination with conventional anticancer drug treatments. Methods: The range of the necrotic area, the percentage of apoptosis-positive cells, the vascular endothelial growth factor expression quantification, and the proliferating cell nuclear antigen-labeling index, as treatment effects, were examined in the BDC cell line (NOZ) in vitro and in vivo (4-wk-old male BALB/c mice). Results: Tumor viability was determined by an in vitro MTS assay. PDT with a single treatment of 5-fluorouracil, gemcitabine, oxaliplatin, and cis-diamminedichloroplatinum showed a significantly lower viability compared with the control or the PDT-alone group (P < 0.05). Furthermore, administering PDT combined with two anticancer drugs showed a further decline in the tumor viability. A treatment of PDT combined with oxaliplatin and gemcitabine showed the least viability (P < 0.05). Thus, this regimen was administered in the in vivo study. The tumor necrotic area, apoptosis positivity, and the vascular endothelial growth factor expression rate were higher in the PDT with anticancer drugs group compared with those of the other groups (P < 0.05). The proliferating cell nuclear antigen-labeling index results in the PDT with the anticancer drugs group were significantly lower than those of the other groups (P < 0.05). Conclusions: A treatment of PDT combined with gemcitabine and oxaliplatin showed the best synergic effect for necrosis, apoptosis, and cytostatic alterations for the treatment of BDC.
Keywords: Apoptosis / Bile duct carcinoma / Photodynamic therapy / Synergic effect / Talaporfin sodium
URI: http://hdl.handle.net/10069/32536
ISSN: 00224804
DOI: 10.1016/j.jss.2012.06.047
Relational Links: http://hdl.handle.net/10069/32597
Rights: © 2013 Elsevier Inc. All rights reserved. / NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Surgical Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Surgical Research, 181, 2(2013)
Type: Journal Article
Text Version: author
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/32536

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