• Department of General Surgery, South West Hospital,Third Military Medical University, Chongqing 400038;
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【Abstract】Objective  To investigate the significance of cyclin D1 and p53 protein expression in synchronous breast carcinoma and fibrosarcoma in rats. Methods  Immunohistochemical SP methods was used to study the expression of cyclin D1 and p53 in synchronous breast carcinoma and fibrosarcoma induced by DMBA in rats.Results  There was no expression of cyclin D1 and p53 in normal breast tissue. In atypical hyperplasia of mammary, there was overexpression of cyclin D1(7/14) and no expression of p53. The overexpression of cyclin D1 and p53 were detected in breast carcinoma (8/18,7/18 respectively) and fibrosarcoma (9/14,5/14 respectively). There was no expression of cyclin D1 and p53 in adjacent sarcoma.The expression of cyclin D1 and p53 protein was associated with histological grading, and showed inverse relation between them. Conclusion  There are cyclin D1 and p53 protein overexpression in the synchronous breast carcinoma and fibrosarcoma induced by DMBA in rats. Cyclin D1 may paticipate in the course of the carcinogenesis of breast carcinoma and fibrosarcoma in rats, and p53 protein overexpression may relate to the degree of malignancy of the tumors.

Citation: ZHANG Yi,JIANG Jun,HAN Xiaorong,et al.. THE SIGNIFICANCE OF CYCLIN D1 AND P53 PROTEIN EXPRESSION IN BREAST CARCINOMA AND FIBROSARCOMA INDUCED BY DMBA IN RATS. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2001, 8(5): 285-287. doi: Copy