Experimental carcinogenesis with 7,12-dimethylbenz(a)anthrazene (DMBA) and its inhibition with isothi-ocyanates.

Abstract

Introduction: DMBA is a chemical carcinogen that induces carcinomas within a few weeks of its application. We developed an experimental model of carcinogenesis induced by DMBA dissolved in 0,5% paraffin oil (DMBA-PO), verifying the inhibitory effect of the carcinogenicity of phenyl isothiocyanate (PhITC), phenethyl (PhnITC) and benzyl isothiocyanate (BITC).
Material and Methods: For this, 88 hamsters were distributed into three groups: one exposed to DMBA-PO (Group 1, n=12), three subgroups (n=12) exposed to PhITC, PhnITC, BITC and DMBA-PO (Group 2, n=36) and four control subgroups (n=10) that were not exposed to the carcinogen in which PO (paraffin oil) and isothiocyanates were applied (Group 3, n=40).
Results: The experiment had a duration of 20 weeks, at the end of which the inhibitory effect was established by comparing the lesions developed in the groups that received isothiocyanates with the group that was only treated with DMBA-PO. The carcinogenic effect of DMBA-PO is 100% (35 carcinomas) and the inhibitory effect was 0, whereas in the presence of isothiocyanates the carcinogenic effect decreases, with an inhibitory effect of 86% for BITC (5 carcinomas) and 74% for PhITC (9 carcinomas).
Conclusion: The inhibitory effect for PhnITC is 80% in relation to invasive OSCC (1 carcinoma).

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Published
2022-08-31
How to Cite
MORALES-HERRERO, María; ORTEGA-MEDINA, Isicio. Experimental carcinogenesis with 7,12-dimethylbenz(a)anthrazene (DMBA) and its inhibition with isothi-ocyanates.. Journal of Oral Research, [S.l.], v. 11, n. 4, p. 1-13, aug. 2022. ISSN 0719-2479. Available at: <https://www.joralres.com/index.php/JOralRes/article/view/joralres.2022.047>. Date accessed: 29 mar. 2024. doi: https://doi.org/10.17126/joralres.2022.047.
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