摘要
目的:探讨血清肿瘤标志物癌胚抗原(CEA)、糖类抗原724(CA724)、铁蛋白(SF)、胃蛋白酶原Ⅰ(PGⅠ)、胃蛋白酶原Ⅱ(PGⅡ)及其比值(PGI/PGII)对胃癌的诊断价值。方法对46例健康对照者(健康对照组),45例慢性萎缩性胃炎患者和39例胃癌患者,分别进行血清CEA,CA724,PGⅠ,PGⅡ及 SF含量的检测。CEA,CA724采用电化学发光法进行检测;PGⅠ和PGⅡ采用化学发光法进行检测;SF采用散射比浊法进行检测。计算 PGI/PGII比值,并对检测结果进行统计分析。结果①与正常对照组相比,胃癌组除 SF差异无统计学意义外,其余指标差异均具有统计学意义(P<0.05),萎缩性胃炎组PGⅠ,PGⅡ和 SF差异有统计学意义(P<0.05);与萎缩性胃炎组相比,胃癌组的 CEA,CA724显著升高,PGⅠ显著下降,并且差异具有统计学意义(P<0.05)。②用于评价胃癌的 ROC 曲线下面积由大到小依次为 CEA,SF, CA724,PGI/PGII,PGⅡ,PGⅠ;CEA,CA724,PGI/PGII和 SF曲线下面积差异无统计学意义(P>0.05),PGⅠ,PGⅡ差异有统计学意义(P<0.05)。③不同肿瘤标志物单项与联合检测对胃癌诊断的敏感度、特异度、阳性预测值及阴性预测值存在差异。结论血清肿瘤标志物CEA,CA724,PGⅠ,PGⅡ和 SF对胃癌的诊断具有重要的参考价值但各指标单独及联合检测对胃癌的诊断价值各不相同;血清PG含量及其比值与胃黏膜病变密切相关。
Objective To investigate the serum levels of tumor markers CEA,CA724,PGⅠ,PGⅡ,PGI/PGII and SF in gas-tric cancer.Methods The serum levels of CEA,CA724,PGⅠ,PGⅡ,PGI/PGII and SF were detected in 46 healthy con-trols,45 atrophic gastritis patients and 39 gastric cancer patients.Serum levels of CEA,CA724 were measured by ELC meth-od,PGⅠ,PGⅡ by time resolved fluorescence immunoassay (TRFIA)and SF by immunoturbidimetry(ITM).Results ①Compared to the healthy controls,the statistical contrast of serum levels of CEA,CA724,PGⅠ,PGⅡ and PGI/PGII except SF was significant in gastric cancer patients(P〈0.05),only PGⅠ,PGⅡ,SF had significant difference in atrophic gastritis patients (P〈0.05).Compared to atrophic gastritis patients,the serum levels of CEA,CA724 were significantly higher,but PGⅠwas lower in gastric cancer patients(P〈0.05).②When CEA,CA724,PGⅠ,PGⅡ,PGI/PGII and SF were used to di-agnose gastric cancer individually,the sequence of the area under ROC curve was CEA,SF,CA724,PGI/PGII,PGⅡ and PGⅠ.Only the areas of PGⅠ,PGⅡunder ROC curve had significant statistical difference (P〈0.05).③The sensitivity,speci-ficity,PPV and NPV were different when these indexes were used to diagnize gastric cancer individually or incorporatedly. Conclusion The serum levels of tumor markers CEA,CA724,PGⅠ,PGⅡ,PGI/PGII and SF had important reference value for the diagnosis of gastric cancer although the diagnostic value was different individually or incorporatedly;the content of serum PG and the ratio of PGI/PGII were closely related to the gastric mucosa.
出处
《现代检验医学杂志》
CAS
2014年第6期102-106,共5页
Journal of Modern Laboratory Medicine