Details

Autor(en) / Beteiligte

• Barros, Alfredo Carlos S D
• Muranaka, Elisa Naomi K
• Mori, Lincon Jo
• Pelizon, Christina Helena T
• Iriya, Kyoshi
• Giocondo, Giovana
• Pinotti, José Aristodemo

Titel

Induction of experimental mammary carcinogenesis in rats with 7,12-dimethylbenz(a)anthracene

Ist Teil von

• Revista do Hospital das Clinicás, 2004, Vol.59 (5), p.257-261

Ort / Verlag

Brazil: Faculdade de Medicina / Universidade de São Paulo - FM/USP

Erscheinungsjahr

2004

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• To test an experimental model of chemical mammary carcinogenesis induction in rats. Twenty young virgin Sprague-Dawley female rats, aged 47 days, received 20 mg of 7,12-dimethylbenz(a)anthracene (DMBA) intragastrically by gavage. Afterwards, at 8 and 13 weeks, their mammary glands were examined. At the end of the experiment, the animals were sacrificed, and the mammary tumors were measured and weighed. Tumor fragments were analyzed using light microscopy. Eight weeks after DMBA injection, 16 rats presented at least 1 breast tumor (80%). After 13 weeks, all of them (100%) developed breast carcinomas that were confirmed by histopathological analysis. 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.