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Synergic effect of photodynamic therapy using talaporfin sodium with conventional anticancer chemotherapy for the treatment of bile duct carcinoma.
MedLine Citation:
PMID:  22835954     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
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.
Authors:
Yoshikazu Nonaka; Atsushi Nanashima; Takashi Nonaka; Masataka Uehara; Hajime Isomoto; Takafumi Abo; Takeshi Nagayasu
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-13
Journal Detail:
Title:  The Journal of surgical research     Volume:  -     ISSN:  1095-8673     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0376340     Medline TA:  J Surg Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Inc. All rights reserved.
Affiliation:
Division of Surgical Oncology, Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
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