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- W2015183711 abstract "The integrins are transmembrane alfabeta heterodimers mediating cell-cell as well as cell-extracellular matrix interactions. The present study was designed to analyse the expression of beta-1 integrins on cryostat sections of invasive ductal carcinomas not otherwise specified by avidin-biotin complex immunoperoxidase technique, and to compare it with the morphometric prognostic index (MPI). The results show that the expression of beta-1 integrins is heterogeneous in the tumors. This heterogeneity was observed in quantitative and qualitative staining pattern. There was an absent expression of beta-1 integrins in 22 out of 55 tumors while 33 showed staining, weak on 23 cases and strong on 10 infiltrative ductal carcinomas. Statistical analysis pointed to some correlation of beta-1 integrins with some morphometric parameters. Low or absent expression of beta-1 integrins correlated significantly with tumors exceeding 2 cm (p < 0.0245). Moreover, a larger proportion of tumors with positive lymph nodes showed absence of beta-1 expression compared with negative lymph node, and this was also statistically significant (p < 0.0076). Correlation between mitotic activity index and staining intensity for beta-1 integrins was not found (p < 0.372). When tumors with different beta-1 expression were subdivided according to MPI values into two groups, one group with a low-risk, < 0.6, and second with a high risk, > 0.6, concordance in prognostic value was shown between MPI and beta-1 expression (p < 0.0193). These results support the idea that loss of beta-1 integrins correlates with the invasive and metastatic potential of tumor cells." @default.
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- W2015183711 date "1993-11-01" @default.
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- W2015183711 title "Expression of Beta-1 Integrins on Tumor Cells of Invasive Ductal Breast Carcinoma" @default.
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- W2015183711 doi "https://doi.org/10.1016/s0344-0338(11)80668-0" @default.
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