期刊
HEAD AND NECK-JOURNAL FOR THE SCIENCES AND SPECIALTIES OF THE HEAD AND NECK
卷 34, 期 4, 页码 505-512出版社
WILEY
DOI: 10.1002/hed.21761
关键词
topical photodynamic therapy; oral precancerous lesions; photosan; DMBA; hamster buccal pouch precancer
资金
- National Science Council, Taipei, Taiwan [NSC 97-2314-B-033-001, NSC 99-2622-E-033- 014-CC3]
Background Previous studies found that topical photodynamic therapy (PDT) is very effective for human oral precancerous lesions. Methods. This study evaluated whether topical photosanmediated PDT (topical photosan- PDT), using a 640-nm lightemitting diode (LED) light, is an effective treatment modality for hamster buccal pouch precancerous lesions. Fourteen 7,12dimethylbenz(a) anthracene (DMBA)-induced hamster buccal pouch precancerous lesions were treated with topical photosan- PDT using the 640-nm LED light twice a week. Results. All 14 of the precancerous lesions showed a complete histologically confirmed response to the lesions after an average of 3.79 (range, 3-5) PDT treatments. Normal and precancerous pouch mucosae in the other 4 hamsters received 17 or 19 treatments of topical photosan-PDT showed no cumulative side effects. No recurrence of the lesions was found in these 18 PDT-treated hamsters after a follow-up period of 50 weeks. Conclusion. Our findings indicate that topical photosanPDT is a very effective treatment modality for DMBA-induced hamster buccal pouch precancerous lesions. (C) 2011 Wiley Periodicals, Inc. Head Neck 34: 505-512, 2012
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