| Autor: |
R H, Wetzels, H J, Kuijpers, E B, Lane, I M, Leigh, S M, Troyanovsky, R, Holland, U J, van Haelst, F C, Ramaekers |
| Rok vydání: |
1991 |
| Předmět: |
|
| Zdroj: |
The American journal of pathology. 138(3) |
| ISSN: |
0002-9440 |
| Popis: |
In normal breast tissue and in noninvasive breast carcinomas, various keratin-14 antibodies were reactive predominantly with the basal/myoepithelial cell layer, although mainly in terminal and larger ducts luminal cells sometimes also were stained. A similar reaction pattern was found with an antibody directed against keratin 17, although this antibody was more often found negative than keratin 14 in the pre-existing myoepithelial cells in intraductal carcinomas. Furthermore antibodies reactive with hyperproliferation-related keratins 6 and 16 were used. One of these (LL025) was completely negative in normal breast tissue and noninvasive breast carcinomas. However 10% of the invasive carcinomas were diffusely or focally positive with this latter antibody, while in 18 of 115 cases of invasive breast carcinomas studied, a basal cell phenotype was detected. A relatively high concordance was found between the carcinomas immunostaining with the basal cell and the hyperproliferation-related keratins, but not between these markers and the proliferation marker Ki-67. This supports the conclusion that basal cells in breast cancer may show extensive proliferation, and that absence of Ki-67 staining does not mean that (tumor) cells are not proliferating. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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