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- W2051076299 abstract "Treatment decisions for cervical cancer, a common disease worldwide, depend on demonstrating whether or not tumor invasion of the surrounding tissue has occurred. Invasion can be difficult to assess by standard histopathologic methods, especially when limited amounts of tissue are available. Several studies of a variety of cancers have reported increased expression of laminin-5-an important attachment protein for epithelial cells-in invasive carcinomas. This study was designed to investigate whether the presence of laminin-5 is related to the invasive capacity of cervical lesions.We used immunohistochemical methods to stain archival, paraffin-embedded sections of cervical lesions with a polyclonal antibody specifically targeting the gamma2 chain of human laminin-5 protein. The study sample included 23 lesions of mild and moderate dysplasia (cervical intraepithelial neoplasia [CIN] 1 and 2, respectively), 32 lesions of severe dysplasia or carcinoma in situ (CIN 3), 15 lesions of microinvasive cancer, and 20 lesions of frankly invasive cancer. Cellular proliferative activity was also investigated by the use of monoclonal MIB-1 (directed against the antigen Ki-67) and anticyclin A antibodies.Invasiveness of cervical lesions was positively associated with immunohistochemical staining of the gamma2 chain of laminin-5 (two-sided P =.001). All CIN 1 and CIN 2 lesions-except one CIN 2 lesion later shown to be invasive cancer-and 21 CIN 3 lesions tested negative for the gamma2 chain of laminin-5. Eleven CIN 3 lesions and all invasive cancers tested positive for this protein. One lymph node metastasis and a pleural metastasis from one of the patients with invasive cancer showed strong immunohistochemical positivity. Proliferative activity increased with advancement of the lesion but was not confined to cells positive for the gamma2 chain of laminin-5.These data suggest that antibodies directed against the gamma2 chain of laminin-5 can identify cervical lesions with invasive capacity and thus may be useful as a sensitive marker of early invasion." @default.
- W2051076299 created "2016-06-24" @default.
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- W2051076299 date "1999-11-03" @default.
- W2051076299 modified "2023-10-18" @default.
- W2051076299 title "Laminin-5 as a Marker of Invasiveness in Cervical Lesions" @default.
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- W2051076299 doi "https://doi.org/10.1093/jnci/91.21.1882" @default.
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