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定量ELISA验便筛查结直肠癌

By LabMedica International staff writers
Posted on 20 Apr 2015
对一种新的筛选免疫色谱法试剂盒进行评价,与其他检验相比,评价其检测结直肠癌(CRC)和结肠囊腺瘤的有效性。
M2丙酮酸激酶(M2-PK)是丙酮酸激酶的同工酶,主要由未分化和增殖的组织以及癌细胞产生,M2-PK调节腺苷三磷酸和大分子之间的合成平衡。
Catholic University of Korea (Seoul, Korea)的研究人员和他们的同僚研究了酶生物标志物M2-PK,患者组有139例结肠直肠癌和124例囊腺瘤,群体基础对照组有60人,共计323例受试者参加本研究。粪便样品采集自待手术、门诊和健康促进诊所的受试者。所有粪便样品采集自经口结肠镜检查准本程序之前,部分样品立即接受检查,其他样品在-20°C下贮藏。
一种免疫色谱法大便潜血检验(iFOBT),Asan Easy Test FOB (Asan Biotech Institute, Seoul, Korea)的产品与免疫色谱法粪瘤M2-PK检验(iM2-PK,M2-PK Quick;ScheBo Biotech AG,Giessen,Germany)和由ScheBo Biotech AG生产的酶连免疫检测试剂盒肿瘤M2-PKTM ELISA便检工具进行比较。
M2-PK检验结肠直肠癌的灵敏度为92.8%,检验囊腺瘤的灵敏度为69.4%。此外,研究者还对M2-PK检验与一种免疫大便潜血检验(iFOBT)进行了比较。后者相对于M2-PK检验有明显的劣效性。iFOB仅检测出47.5%的结肠癌和12.1%的囊腺瘤。结果,M2-PK检验出的结直肠癌病例是免疫大便潜血检验(iFOBT)检测的两倍之多,而检测的囊腺瘤患者数量是iFOBT的六倍。
iM2-PK是一种粪瘤M2-PK定性免疫色谱法。本检验大约需要15分钟,费用约为粪瘤M2-PK ELISA检验的一半。iM2-PK的主要优势是,能使用临床上新鲜的粪便样品进行检测,无需将样品传送给实验室检查。iM2-PK的检测灵敏度优于粪瘤M2-PK ELISA检验。作者得出结论,iM2-PK是一种可靠和可接受的CRC筛查方法。研究已发表于2014年12月5日刊的Gut and Liver(肠和肝脏)。

Related Links:
Catholic University of Korea 
Asan Biotech Institute 
ScheBo Biotech AG 


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