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FHIT基因蛋白表达与结直肠癌及癌前期病变的临床关系 被引量:1

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摘要 目的:探讨脆性组氨酸三联体(fragile histidine trail,FHIT) 蛋白在45例结直肠癌、36例结直肠腺瘤和23例正常对照组中的表达睛况. 方法:标本经40 g/L甲醛固定,常规石蜡包埋,采用免疫组化SP法检测FHIT在结直肠癌、结直肠腺瘤和正常对照组中的表达. 结果:在45例结直肠癌中28例FHIT蛋白表达显著减少或缺失,5例表达减弱,12例表达阳性;其中结直肠癌Dukes A,B和C期FHIT蛋白表达阴性比例分别为6/11,5/12 和17/22.在36例结直肠腺瘤中7例FHIT蛋白表达显著减少或缺失,4例表达减弱,25例表达阳性;其中结直肠腺瘤伴轻、中和重度不典型增生FHIT蛋白表达阴性比例分别为2/16,1/7和4/13.FHIT蛋白阴性表达在结直肠癌和正常对照组(62.2% vs 4.4%,X2=25.33,P<0.01)、结直肠癌和结直肠腺瘤(62.2% vs 19.4%,X2=14.19,P<0.01)、结直肠癌未伴淋巴转移的Dukes A+B期和已伴淋巴转移的C 期(47.8% vs 77.3%,X2=4.28,P<0.05)间均有显著性差异,而在结直肠腺瘤伴轻度不典型增生和中、重度不典型增生(12.5% vs 25.0%,X2=0.84,P>0.25),结直肠腺瘤和正常对照组(19.4% vs 4.4%,X2=3.51,P>0.05)中无显著性差异. 结论:FHIT蛋白在结直肠癌中呈低表达或缺失,且FHIT低表达与转移状况有相关关系,提示该基因可能与结直肠癌的发生发展有关.
出处 《世界华人消化杂志》 CAS 2004年第8期1964-1966,共3页 World Chinese Journal of Digestology
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