GAN Changqing, et al. Effect of different dosage of tamoxifen on the morphology of the mammary hyperplasia of rats[J]. Journal of Chongqing Medical University, 2003,(4):448-450.
GAN Changqing, et al. Effect of different dosage of tamoxifen on the morphology of the mammary hyperplasia of rats[J]. Journal of Chongqing Medical University, 2003,(4):448-450. DOI: 10.13406/j.cnki.cyxb.2003.04.012.
Objective:To study the effect of different dosage of tamoxifen (TAM) on the morphological change of experimental mammary hyperplasia.Methods:The animal model of mammary hyperplasia of Wistar rats was induced with estradiol and progesterone. One hundred and eighty female Wistar rats were selected randomly into group A (control group )
group B (model control group)
group C (166.7 μg dosage of TAM)
group D(333μg dosage of TAM)
group E(500μg dosage of TAM)
and group F(667μg dosage of TAM) and fed for 2 months.Samples of breasts were collected and observed under light microscope and electronmicroscope.Results:For light microscope observation :there were obvious difference between premedication and postmedication in group E and F
respectively ( P <0.01)
but no obvious difference were found in group C and D( P >0. 05)
implying that 500 μg dosage and 667 μg dosage of TAM had obvious inhibitory effect on mammary hyperplasia under light microscope.Conclusion:Through light microscope and electronmicroscope observation
TAM especially 500μg and 667μg dosage proves to have obvious inhibitory effect on mammary hyperplasia induced by estradiol and progesterone.