AIM:To explore useful prognostic factors for mucinous adenocarcinoma(MAC) in the colon and rectum.METHODS:MAC was divided into low-and high-grade types based on the degree of structural differentiation;low-grade MAC a...AIM:To explore useful prognostic factors for mucinous adenocarcinoma(MAC) in the colon and rectum.METHODS:MAC was divided into low-and high-grade types based on the degree of structural differentiation;low-grade MAC arisen from well to moderately differentiated adenocarcinoma and papillary carcinoma,and high-grade MAC from poorly differentiated adenocarcinoma and signet ring cell carcinoma.Immunohistochemically,the expression of 2 types of MUC1(MUC1/DF and MUC1/CORE),MUC2,2 types of MUC5AC(MUC5AC/CHL2 and HGM),MUC6,CDX2,and CD10 was examined in 16 cases of MAC consisting of 6 low-and 10 high-grade types.RESULTS:MUC1/DF3 was expressed in 3 of 6 low-grade MAC(50) and 10 of 10 high-grade MAC(100).MUC1/CORE was expressed in 1 of 6 lowgrade MAC(16.7) and 7 of 10 high-grade MAC(70).MUC2 was expressed in all MAC regardless of the grade.MUC5AC was expressed in 6 of 6 low-grade MAC(100) and 4 of 10 high-grade MAC(40).HGM was expressed in 5 of 6 low-grade MAC(83.3) and 6 of 10 high-grade MAC(60).Expression of MUC6 and CD10 was undetected in all MAC regardless of the grade.CDX2 was expressed in 5 of 6 low-grade MAC(83.3) and 7 of 10 high-grade MAC(70).Taken together,MUC1/DF3 was expressed significantly more frequently in high-grade MAC than in low-grade,and MUC5AC/CHL2 was expressed significantly more frequently in low-grade MAC than in high-grade.CONCLUSION:It is proposed that MUC1/DF3 and MUC5AC/CHL2 immunostaining is useful to discriminate high-grade MAC from low-grade MAC.展开更多
为了探讨粘蛋白(MUC1)基因568位点A/G单核苷酸多态性与胃癌遗传易感性的关系,采用序列特异性引物-聚合酶链反应(Sequence specific primers PCR,PCR-SSPs)检测来自辽宁地区人群138例胃癌患者及与其配比的131例对照个体MUC1568位点A/G多...为了探讨粘蛋白(MUC1)基因568位点A/G单核苷酸多态性与胃癌遗传易感性的关系,采用序列特异性引物-聚合酶链反应(Sequence specific primers PCR,PCR-SSPs)检测来自辽宁地区人群138例胃癌患者及与其配比的131例对照个体MUC1568位点A/G多态性,以ELISA法检测血清H.pyloriIgG抗体。结果显示:(1)对照人群MUC1基因568位点AA、AG、GG3种基因型分布频率分别为73.3%、22.1%、4.6%;(2)胃癌组MUC1AA基因型携带频率显著高于正常对照组(P=0.03),携带MUC1AA基因型个体胃癌的发病风险增高到1.92倍;(3)以MUC1AG+GG基因型并血清幽门螺杆菌(H.pylori)IgG抗体阴性的个体为对照,AG+GG基因型并H.pyloriIgG抗体阳性个体、AA基因型并H.pyloriIgG抗体阴性个体、AA基因型并H.pyloriIgG抗体阳性个体胃癌患病风险增高,但3组各组间差异均无统计学意义(P>0.05)。说明MUC1基因568位点A/G多态与胃癌的遗传易感性相关;MUC1A/G基因多态性和H.pylori感染在胃癌发生发展过程未见交互作用。展开更多
基金Supported by Grants-Aid for Researchers,Hyogo College of Medicine and Grants-in Aid for Scientif ic Research and Hitec Research Center Grant from the Ministry of Education,Science,Sports,Culture,and Technology of Japan
文摘AIM:To explore useful prognostic factors for mucinous adenocarcinoma(MAC) in the colon and rectum.METHODS:MAC was divided into low-and high-grade types based on the degree of structural differentiation;low-grade MAC arisen from well to moderately differentiated adenocarcinoma and papillary carcinoma,and high-grade MAC from poorly differentiated adenocarcinoma and signet ring cell carcinoma.Immunohistochemically,the expression of 2 types of MUC1(MUC1/DF and MUC1/CORE),MUC2,2 types of MUC5AC(MUC5AC/CHL2 and HGM),MUC6,CDX2,and CD10 was examined in 16 cases of MAC consisting of 6 low-and 10 high-grade types.RESULTS:MUC1/DF3 was expressed in 3 of 6 low-grade MAC(50) and 10 of 10 high-grade MAC(100).MUC1/CORE was expressed in 1 of 6 lowgrade MAC(16.7) and 7 of 10 high-grade MAC(70).MUC2 was expressed in all MAC regardless of the grade.MUC5AC was expressed in 6 of 6 low-grade MAC(100) and 4 of 10 high-grade MAC(40).HGM was expressed in 5 of 6 low-grade MAC(83.3) and 6 of 10 high-grade MAC(60).Expression of MUC6 and CD10 was undetected in all MAC regardless of the grade.CDX2 was expressed in 5 of 6 low-grade MAC(83.3) and 7 of 10 high-grade MAC(70).Taken together,MUC1/DF3 was expressed significantly more frequently in high-grade MAC than in low-grade,and MUC5AC/CHL2 was expressed significantly more frequently in low-grade MAC than in high-grade.CONCLUSION:It is proposed that MUC1/DF3 and MUC5AC/CHL2 immunostaining is useful to discriminate high-grade MAC from low-grade MAC.
文摘为了探讨粘蛋白(MUC1)基因568位点A/G单核苷酸多态性与胃癌遗传易感性的关系,采用序列特异性引物-聚合酶链反应(Sequence specific primers PCR,PCR-SSPs)检测来自辽宁地区人群138例胃癌患者及与其配比的131例对照个体MUC1568位点A/G多态性,以ELISA法检测血清H.pyloriIgG抗体。结果显示:(1)对照人群MUC1基因568位点AA、AG、GG3种基因型分布频率分别为73.3%、22.1%、4.6%;(2)胃癌组MUC1AA基因型携带频率显著高于正常对照组(P=0.03),携带MUC1AA基因型个体胃癌的发病风险增高到1.92倍;(3)以MUC1AG+GG基因型并血清幽门螺杆菌(H.pylori)IgG抗体阴性的个体为对照,AG+GG基因型并H.pyloriIgG抗体阳性个体、AA基因型并H.pyloriIgG抗体阴性个体、AA基因型并H.pyloriIgG抗体阳性个体胃癌患病风险增高,但3组各组间差异均无统计学意义(P>0.05)。说明MUC1基因568位点A/G多态与胃癌的遗传易感性相关;MUC1A/G基因多态性和H.pylori感染在胃癌发生发展过程未见交互作用。