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Abstract Title:

Chemopreventive potential of phenolic compounds in oral carcinogenesis.

Abstract Source:

Arch Oral Biol. 2014 Oct ;59(10):1101-7. Epub 2014 Jul 3. PMID: 25033381

Abstract Author(s):

B Baldasquin-Caceres, F J Gomez-Garcia, P López-Jornet, J Castillo-Sanchez, V Vicente-Ortega

Article Affiliation:

B Baldasquin-Caceres

Abstract:

OBJECTIVE: To evaluate the chemopreventive potential of phenolic compounds - potassium apigenin, cocoa, catechins, eriocitrin and rosmarinic acid in oral carcinogenesis induced in hamsters by means of the topical application of 7,12-dimethylbenz(a)anthracene(DMBA).

STUDY DESIGN: An experimental study at the University of Murcia.

METHODS: 50 male Syrian hamsters (Mesocricetus auratus) were divided into five groups of ten: Group I (control group): 0.5% DMBA; Group II: 0.5% DMBA+1.1mg/15ml potassium apigenin; Group III: 05% DMBA+2.5mg/15ml cocoa catechins; Group IV: 0.5% DMBA+6mg/15ml eriocitrin; Group V: 0.5% DMBA+1.3mg/15ml rosmarinic acid. The flavonoids were administered orally. All the animals were sacrificed after 12 weeks. Macroscopic, microscopic and immunohistochemical (PCNA and p53) analyses of the lesions were performed.

RESULTS: All the groups treated with phenolic compounds showed lower incidences of tumour, greater differentiation and lower scores in the tumour invasion front grading system in comparison with the control group. Potassium apigenin and rosmarinic acid achieved the best results, the former considerably reduced the carcinoma tumour volumes developed and both significantly reduced the intensity and aggression of the tumours. Immunoexpression of PCNA and p53 were significantly altered during DMBA-induced oral carcinogenesis.

CONCLUSIONS: Animals treated with phenolic compounds, particularly potassium apigenin and rosmarinic acid, showed a lower incidence of tumours.

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