- The Expression of p53, c-erbB-2 and nm23 Proteins in Breast Cancer.
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Kyo Young Lee, Yong Goo Kim, Young Shin Kim, Kyung Ja Han, Chang Suk Kang, Jean A Kim, Won Il Kim, Sang In Shim
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Korean J Pathol. 1999;33(2):88-95.
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 Abstract
- Recently, p53, c-erbB-2 and nm23 proteins have been studied in breast cancer. The expression of p53 protein indicates the mutation of p53 gene known as a tumor supressor gene, and c-erbB-2 gene amplification has been considered an indicator of poor prognosis and nm23 a metastsis suppressor gene. In order to elucidate the roles and relations of these proteins in the develpoment, progression and metastasis in breast cancer, we studied 89 cases of invasive breast cancer and 32 cases of lymph node metastasis for the expression of p53, c-erbB-2 and nm23 proteins using an immunohistochemical method. The results were as follows: 1) The expression rates of p53, c-erbB-2, and nm23 proteins in breast cancer were 40.4%, 34.8% and 55.1%, respectively. Co-expression of p53 protein and c-erbB-2 protein was found in 20.2% of cases, showing the highest incidence in poorly differentiated type (40%). 2) p53 protein expression was increased in poorly differentiated type but was not statistically significant.
On the other hand, the expression of nm23 protein was decreased in poorly differentiated type, which was statistically significant (p<0.05). 3) The correlation of p53 protein expression with c-erbB-2 protein expression was statistically significant (p<0.05) but that with nm23 protein was not. 4) In the cases with lymph node metastasis, discordant expression of p53, c-erbB-2 and nm23 proteins between primary tumor and the lymph node metastatic tumor was found in 9.4%, 3.1% and 18.8% of cases, respectively.
The above results suggest that overexpression of p53 and c-erbB-2 proteins and downregulation of nm23 protein are associated with the tumor progression in the breast cancer.
- Expression of the nm23 and E-cadherin Proteins in Breast Carcinoma.
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Jean a Kim, Won Il Kim, Sang In Shim, Chang Suck Kang, Kyo Young Lee, Young Shin Kim
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Korean J Pathol. 1998;32(1):29-34.
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Abstract
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- Expression of the nm23 and E-cadherin proteins has been studied in a number of tumors. Reduced expression of the nm23 and E-cadherin proteins seems to be associated with metastasis or disease progression in some tumors, including breast carcinoma. To assess the role of nm23 and E-cadherin in tumor differentiation and metastasis of breast carcinoma, immunohistochemical staining for the nm23 and E-cadherin proteins was performed in paraffin embedded tumor samples from 86 breast carcinomas. The results were as follows: 1) Expression of the nm23 protein in breast carcinoma was strong positive in 32 cases (37.2%), weak positive in 26 cases (30.2%), and negative in 28 cases (32.6%) of the cases. Expression of the nm23 protein in breast carcinoma decreased according to histological grade and lymph node metastasis, but was not statistically significant. 2) Expression of the E-cadherin protein in breast carcinoma was strong positive in 50 cases (58.1%), weak positive in 24 cases (27.9%), and negative in 12 cases (14%) of the cases.
Expression of the E-cadherin protein in breast carcinoma decreased according to histological grade and lymph node metastasis, but was not statistically significant. 3) There was a statistically significant correlation between the expression of the nm23 protein and the E-cadherin protein in breast carcinoma (p<0.05). These results suggest that the expression of the nm23 and E-cadherin proteins is related to tumor differentiation, and may also be an useful prognostic factor in breast carcinoma.
- Desmoplastic Trichoepithelioma: A case report.
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Jean A Kim, Young Sill Kim, Seok Jin Kang, Sun Moo Kim
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Korean J Pathol. 1996;30(9):865-867.
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Abstract
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- Desmoplastic trichoepithelioma is a solitary tumor of the hair follicle with female preponderance, most commonly located on the face. Clinically, the lesions appear annular and firm with a raised border and a depressed nonulcerated center, but the appearance is not so distinctive to hair follicle tumors that definite diagnosis is established by the histopathologic findings. We report a case of desmoplastic trichoepithelioma in a 67-year-old woman who had an asymptomatic, hard, annular lesion measuring 0.8 cm in diameter, with a raised border and a depressed center on the right cheek. Histopathologic findings showed narrow strands of basaloid cells, horny cysts, and desmoplastic stroma, with the features corresponding to the desmoplastic trichoepithelioma.
- Fine Needle Aspiration Cytology of Retroperitoneal Paraganglioma with an Unusual Pattern: A Case Report.
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Jean A Kim, Young Shin Kim, Chang Suk Kang, An Hi Lee, Byung Kee Kim, Sang In Shim, Sun Moo Kim
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Korean J Cytopathol. 1994;5(1):74-78.
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Abstract
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- A case of retroperitoneal paraganglioma is presented with fine needle aspiration cytologic features.
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