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三叶因子1表达与胃粘膜损伤及胃癌的关系

, PP. 1178-1180

Keywords: 三叶因子,tff1,胃粘膜保护,上皮重建,肿瘤抑制

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Abstract:

目的测定三叶因子1在正常及病理条件下胃粘膜中的表达情况,探讨tff1在胃粘膜损伤修复及胃癌抑制中的作用及意义。方法应用免疫组化方法测定正常及不同病理条件下胃粘膜中tff1的表达情况,通过图像分析软件分析其阳性信号平均光密度值了解其表达情况。结果胃炎、胃溃疡及十二指肠球部溃疡患者tff1表达明显高于正常胃粘膜;多发/复合性溃疡患者tff1表达高于单发的消化性溃疡患者;胃溃疡患者与十二指肠球部溃疡患者、胃炎患者与单一消化性溃疡患者表达相比均无统计学差异;胃腺癌患者癌旁组织表达明显高于正常胃粘膜,而腺癌组织的表达强度则与癌组织的分化程度呈正比,分化程度愈低,表达愈弱,低分化腺癌无阳性表达,中、高分化腺癌表达略低于正常粘膜,但二者对比无统计学差异;食管鳞癌及癌旁组织均无阳性表达;各组男女对比均无统计学差异。结论tff1在胃炎及消化性溃疡中表达升高,且在多发/复合性溃疡中的表达较单发溃疡表达升高,即粘膜损伤越严重其表达越强,提示其在胃粘膜保护及促进上皮重建机制中具有一定的作用。tff1在癌旁组织中表达增强提示其可能与肿瘤抑制及分化机制有关,而在癌组织中表达减弱,且分化程度越低表达越弱可能与癌组织腺体及细胞破坏、tff1的分泌减少有关。

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