نتایج جستجو برای: 67 antigen
تعداد نتایج: 268341 فیلتر نتایج به سال:
Antigen Ki-67 is a nuclear protein expressed in proliferating mammalian cells. It is widely used in cancer histopathology but its functions remain unclear. Here, we show that Ki-67 controls heterochromatin organisation. Altering Ki-67 expression levels did not significantly affect cell proliferation in vivo. Ki-67 mutant mice developed normally and cells lacking Ki-67 proliferated efficiently. ...
OBJECTIVE This study was undertaken to determine whether the expressions of 3 proliferation markers (Ki-67, proliferating cell nuclear antigen, and silver-staining nucleolar organizer regions) and of p53 tumor protein could differentiate spontaneous abortions from gestational trophoblastic diseases and also discriminate among gestational trophoblastic disease subgroups. STUDY DESIGN Twenty-tw...
The primary purpose of this study was to evaluate the prognostic significance of Ki-67, a cell proliferation-associated antigen, in a large group (n = 674) of axillary node-negative breast cancer cases with long-term follow-up and to correlate Ki-67 antigen expression with S-phase fraction. Ki-67 immunostaining was assessed both semiquantitatively and quantitatively. The statistical analysis fo...
Objective Adenoid cystic carcinoma (ACC) is a rare malignant tumor originating from the salivary glands. It’s rather bland histological appearance that masks its ultimate biological aggressiveness. Evaluation of cell cycle and mitoses have been useful in predicting malignancy in many tumors. Ki-67 antigen is a human nuclear antigen that presents during all active phases of cell cycle. The aim ...
OBJECTIVE To assess the potential usefulness of Ki-67 antigen expression as a predictor of outcome in ovarian cancer through the analysis of MIB-1 monoclonal antibody reactivity. METHODS Cell proliferation and clinicopathologic variables were assessed in 26 patients with primary epithelial ovarian cancer who had undergone exploratory laparotomy. The expression of primary tumor proliferation r...
BACKGROUND This study aimed at the evaluation of the expression of metallothionein (MT) in laryngeal carcinoma and its correlation with the expression of Ki-67 antigen and p53 protein and selected clinical and pathological variables in view of their potential prognostic significance. MATERIALS AND METHODS Sixty-five laryngeal cancer patients were retrospectively analysed. Expression of MT, Ki...
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