Chemoprevention of 7,12-dimethylbenz[a]anthracene (DMBA)-induced oral carcinogenesis in hamster cheek pouch by topical application of resveratrol complexed with 2-hydroxypropyl-beta-cyclodextrin

Oral Oncology
Giovanni Nicolao BertaFrancesco Di Carlo

Abstract

Oral squamous cell carcinoma (OSCC) develops slowly and it is usually preceded by identifiable oral preneoplastic lesions (OPLs): chemoprevention could be a promising approach. Resveratrol (RV) is a plant-based agent characterized by a strong in vitro antineoplastic action, but this effect has not been clinically confirmed owing to its metabolic inactivation. In order to circumvent this limitation and to improve RV efficacy, it was locally applied and complexed with a protective and solubilising vehicle (2-hydroxypropyl-beta-cyclodextrin, HPbetaCD). The experimentation was performed in vitro on 7,12-dimethylbenz[a]anthracene-induced hamster OSCC cell line (HCPC I) and in vivo in the related animal model, by comparison of two RV-HPbetaCD formulations (cream and mouthwash) and RV alone. Vehicles and RV-formulations were free from toxicity. Antiproliferative action of RV on HCPC I was concentration- and time-dependent, and was improved in HPbetaCD-formulations. In vivo, RV prevented OPL and OSCC appearance and growth. Here, too, HPbetaCD-formulations (mainly mouthwash) demonstrated the best chemopreventive effects in terms of lesions prevalence, multiplicity, dimension, and histological signs of malignancy. HPLC detection of RV co...Continue Reading

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