肿瘤标志物是指肿瘤细胞癌基因及其产物的异常表达所产生的抗原或其它生物活性物质,在正常组织和良性疾病中几乎不产生或仅微量产生。胃癌是我国最常见的恶性肿瘤,近年来对胃癌的标志物研究已有了很大的进展,现综述如下。1 酶类1.1 Pi类谷胱甘肽S-转移酶(glutathione-S-transferase,GsT)这是一组具解毒和结合蛋白功能的同工酶,分为碱性、中性和酸性三大类,均为二聚体。后一类分布在胎 Tumor markers are antigens or other biologically active substances produced by aberrant expression of tumor cell oncogenes and their products, with little or no trace generation in normal tissues and benign diseases. Gastric cancer is the most common malignant tumor in our country. In recent years, great progress has been made in the study of gastric cancer markers. 1 enzymes 1.1 Pi class glutathione S-transferase (glutathione-S-transferase, GsT) This is a set of detoxification and binding protein function of the isozyme, divided into three categories, basic, neutral and acidic , Are dimers. The latter is located in the tire