A Histopathological Study on the Estrogen-induced Breast Lesion in Rats
Korean Journal of Pathology
;
: 466-475, 1992.
Artículo
en Coreano
| WPRIM
| ID: wpr-124904
ABSTRACT
Forty eight female Sprague-Dawley rats received a subcutaneous implant containing 12.5 mg estradiol ant the age of 3 weeks. Three rats were killed in 1, 2, 3, 4, 6 weeks and in every month during 2~12 months after implantation, and the breasts were examined by light microscope. In all rats, enlargement of terminal end buds was obseved in 1~2 weeks, maximum development of hyperplastic alveolar nodules in 3 weeks, and marked dilatation and secretion of alveoli or ducts in 1~12 months after implantation. Ductal epithelial hyperplasia was observed in 27 rats and carcinomas developed in 23 rats in 2~12 months after implantation. It was thought that the changes induced by estradiol are more similar to the human breast lesions, compared with changes induced by chemical carcinogens such as dimethylbenzanthracene(DMBA), because breast carcinomas developed in close relationship with ductal epithelial hyperplasia in both estradiol-treated rats and humans, but not in DMBA-treated rats.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Carcinógenos
Límite:
Animales
/
Femenino
/
Humanos
Idioma:
Coreano
Revista:
Korean Journal of Pathology
Año:
1992
Tipo del documento:
Artículo
Similares
MEDLINE
...
LILACS
LIS