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Rev. bras. mastologia ; 20(2): 76-79, abr.-jun. 2010. ilus
Article in Portuguese | LILACS | ID: lil-605113

ABSTRACT

Objetivo: Testar um modelo experimental de indução de carcinogênese em raras Sprague-Dawley. Métodos: Foram estudadas 30 ratas fêmeas virgens Sprague-Dawley, induzidas ao carcinogênese mamário. Com 50 dias de vida, foi injectado 7,12-dimerilbenz(a)antrace no ventre por gavage. Com 12 semanas, as glândulas mamárias foram examinadas, assim como os tecidos cerebrais, pulmonares, ossos do fêmur e fígado. Resultados: Doze semanas após a injeção de DMBA, 85% das ratas apresentaram pelo menos um tumor mamário visível. Conclusão: O modelo experimental de carcinoma mamário induzido por DMBA mostrou-se efetivo e de fácil reprodução.


Objective: To test an experimental model of chemical mammary carcinogenesis induction in Sprague-Dawley rats. Methods: Thirty virgin Sprague-Dawley female rats, aged 50 days, received 20 mg of 7,12-dimethyLbenz(a)anthracene (DMBA) intragastrically by gavage. At 12 week their mammary glands were examined. Brain, Liver, bone and Lung tissue were also analyzed. Results: Twelve weeks after DMBA injection, 85% rats presented at Least one breast tumor. Conclusion: This experimental animal model of chemical mammary induced carcinogenesis is feasible and can be used in further experiments on the role of tumorigenic biomodulator substances.


Subject(s)
Animals , Female , Rats , /administration & dosage , Carcinoma/chemically induced , Disease Models, Animal , Breast Neoplasms/chemically induced , Rats, Sprague-Dawley , Carcinogenicity Tests
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