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首页> 外文期刊>Acta Dermato-Venereologica >Expression of p21WAF1/CIP1, p53, bcl-2 and Ki-67 in venous leg ulcers with and without squamous cell carcinoma.
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Expression of p21WAF1/CIP1, p53, bcl-2 and Ki-67 in venous leg ulcers with and without squamous cell carcinoma.

机译:p21WAF1 / CIP1,p53,bcl-2和Ki-67在有或没有鳞状细胞癌的静脉小腿溃疡中的表达。

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摘要

In order to gain understanding of the cellular mechanisms of malignant transformation in chronic venous leg ulcers, we analysed by immunohistochemistry the presence of p21, p53, bcl-2 and Ki-67 in ulcers with and without squamous cell carcinoma. The material consisted of 41 archived histopathological samples from 33 patients with chronic venous leg ulcers and 28 samples from 21 patients suffering from squamous cell carcinoma in chronic venous leg ulcers. All samples derived from the chronic ulcers were negative for p53, p21 and bcl-2. Cells positive for Ki-67 were seen in certain ulcer areas. In the cancers, 14 samples showed immunopositivity for p53 and 22 samples were positive for p21, with expression mainly in the suprabasal layer. Expression of p21 seemed independent of p53. None of the samples was bcl-2-positive. Ki-67 was positive with basal expression in 16/28 of the tumour samples, 15 of which also expressed p21. There was no perilesional p53 or p21 activity in the cancer samples. The results regarding perilesional expression are different from those reported in UV-induced squamous cell carcinomas and probably reflect a different carcinogen.
机译:为了了解慢性静脉曲张性溃疡的恶性转化的细胞机制,我们通过免疫组织化学分析了有或无鳞状细胞癌的溃疡中p21,p53,bcl-2和Ki-67的存在。该材料包括来自33例慢性静脉曲张性溃疡患者的41份组织病理学样本和来自21例慢性静脉曲张性溃疡鳞状细胞癌患者的28个样本。来自慢性溃疡的所有样品的p53,p21和bcl-2均为阴性。在某些溃疡区域可观察到Ki-67阳性细胞。在癌症中,有14个样品显示出对p53的免疫阳性,而22个样品显示出对p21呈阳性,主要在上基底层中表达。 p21的表达似乎独立于p53。所有样品都不是bcl-2阳性的。 Ki-67在16/28个肿瘤样品中呈基础表达阳性,其中15个也表达p21。在癌症样品中没有病灶周围的p53或p21活性。关于病灶周围表达的结果与紫外线诱导的鳞状细胞癌中报道的结果不同,并且可能反映出不同的致癌物。

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