【摘要】 目的　探讨半乳糖凝集素3表达对鉴别良恶性甲状腺肿瘤的临床价值。方法　采用免疫化学染色法(SP法)观察72例手术切除的甲状腺肿瘤标本半乳糖凝集素3的表达。结果　半乳糖凝集素3在恶性肿瘤的细针抽吸(FNA)细胞涂片与组织切片中均高水平表达,在良性肿瘤中不表达或低表达。良性与恶性甲状腺肿瘤在FNA细胞涂片或组织切片中半乳糖凝集素3的表达差异有统计学意义(χ2 =43. 73,χ2 =48. 16,均P<0. 01)。相同性质的甲状腺肿瘤FNA细胞涂片与组织切片的半乳糖凝集素3表达一致,两者之间差异无统计学意义(χ2 =0. 04,χ2 =0. 19,均P>0. 05)。结论　半乳糖凝集素3在良恶性甲状腺肿瘤中表达不同,恶性肿瘤中表达显著增高,是鉴别良恶性甲状腺肿瘤可靠的分子标记物,可用于FNA涂片标本及组织标本检测。更多还原

【Abstract】 Objective To investigate the clinical value of galectin-3 expression on fine needle aspiration (FNA) smearsandtissueslicesof thyroid tumors in distinguishing benign from malignant tumors. Methods Galectin-3 expression on FNA smears and tissue slices of thyroid tumors from 72 thyroidectomy specimens was detected by immunochemical method (SP method). Results Galectin-3 expression was high on FNA smears and tissue slices of malignant thyroid tumors, whereas there was no or low expression of galectin-3 on FNA smears and tissue slices of benign thyroid tumors. The difference of positive rates of galectin-3 expression between malignant and benign thyroid tumors was significant on both FNA smears and tissue slices (χ 2=43.73 and χ 2=48.16, respectively, both P<0.01). There was no significant difference between immunocytochemical methods on FNA smears and immunohistochemical methods on tissue slices in the same benign or malignant thyroid neoplasms (χ 2=0.04, χ 2=0.19, both P>0.05). Conclusion Galectin-3 expression is different between benign and malignant tumors. Galectin-3 expression level is higher in FNA smears and tissue slices of malignant thyroid neoplasms than that of benign ones, suggesting that galectin-3 is a reliable molecular marker in distinguishing benign from malignant thyroid tumors. Galectin-3 expression with immunochemical method may be used in diagnosing benign or malignant thyroid tumors.更多还原