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用高碘酸雪夫试剂(PAS)显示中性粘多糖,PH2.5阿辛兰(AB)显示含羧基的酸性粘多糖,而用醛复红(AF)方法来表明硫酸化粘多糖,已为人们所熟悉。但上述粘多糖在一定病理条件下往往与蛋白同时存在,而后者在 PAS 及 AF 染色中亦显示阳性 相似文献
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The fresh tissues were obtained from 64 colorectal adenocarcinoma (43 well-differentiated and moderately-differentiated adenocarcinoma, 12 poorly- differentiated adenocarcinoma and 9 mutinous cell carcinoma including signet ring cell carcinoma) during surgical operation. The resected edge of each specimen was used for control group. The arylsulfatase B was studied by histochentical staining in different types of colorectal adenocarcinoma, among which 19 cases were investigated by electronhistochemical staining so as to observe the Ruthenium Red granules alteration which represented the extracellular proteoglycan changes and ultrastructure of cancer cells.The results showed that the mutinous cell carcinoma was of the most Intensive arylsulfatase B activity and has a lot of secretory granules with various electron densities in the cytoplasm. The Ruthenium Red granules close to the cancer cell disappeared, a part of remainders changed into the lowered electron density and indistinct shape. In contrast, the 相似文献
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大肠粘液腺癌浸润机理的研究 总被引:8,自引:0,他引:8
对64例大肠癌标本的统计结果表明,粘液腺癌易于浸润肠壁和伴淋巴结转移,并发现其芳香硫酸酯酶和溶菌酶(LZM)活性高于乳头状癌和管状腺癌。电镜观察粘液腺癌间质钉红颗粒明显减少。以上结果提示粘液腺癌分泌了芳香硫酸酯酶和LZM,它们能够水解硫酸肝素上的硫酸基团和蛋白多糖分子结构中的N一乙酰氨基葡萄糖的连接,使这类蛋白多糖的硫酸化程度降低和降解,导致蛋白多糖的屏障结构破坏,使粘液腺癌易于浸润和转移。 相似文献
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大肠癌组织蛋白酶D表达及其与EGFR,PCNA表达的关系 总被引:1,自引:0,他引:1
目的:探讨不同类型大肠癌组织蛋白酶D表达及其与表皮生长因子受体(EGFR)、内源性雌二醇、增殖细胞核抗原(PC-NA)的相互关系。方法:采用免疫组化链亲生物素-过氧化酶(S-P)法。结果:粘液性大肠癌癌细胞浆组织蛋白酶D不同程度阳性,同时,组织蛋白酶D弥散于细胞外粘液中,尤以印戒细胞周围为著。非粘液性癌,胞核多者组织蛋白酶D多为阴性。组织蛋白酶D阳性的大肠癌淋巴结转移率明显高于阴性者。大肠癌组织蛋白酶D表达与表皮生长因子受体表达成正相关。结论:组织蛋白酶D具有破坏宿主间质天然屏障作用,有利于肿瘤细胞侵袭 相似文献
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β-N-乙酰葡萄糖胺酶组织化学改良法在胃癌诊断中的应用 总被引:2,自引:0,他引:2
β-N-乙酰葡萄糖胺酶组织化学改良法在胃癌诊断中的应用病理学教研室黄幼蓉,苗德林中图分类号R446.8为探讨水解酶的活性与癌细胞的浸润关系而采用了Hayashi显示B-N-乙酰葡萄糖胺酶的酶组织化学法,在实验过程中对原法的孵育液的PH值及孵育时间稍作... 相似文献
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