EB病毒Rta/IgG、EBNAl/IgA、VCA/IgA及EA/IgA抗体与鼻咽癌分期的关系

目的 探讨EB病毒Rta/lgG、EBNA1/IgA、VCA/IgA及EA/IgA抗体与鼻咽癌临床分期的关系.方法 收集211例未经治疗的鼻咽癌患者的血清,用酶联免疫吸附法(ELISA)检测Rta/IgG、EBNA1/IgA抗体,用免疫酶法检测VCA/IgA及EA/IgA抗体,按92分期法进行分期,分别计算各T、N、M分期及临床分期的各抗体阳性率及抗体水平并进行统计学分析.结果 鼻咽癌各T、N、M分期及临床分期组Rta/IgG抗体rA值均无统计学差异(P>0.05).Tl期的EBNA1/IgA抗体rA值明显低于其它T分期,NO期明显低于其它N分期,临床I期明显低于其它临床分期(P<0.05).VCA/IgA、EA/IgA抗体滴度各N分期及临床分期间比较,差异有统计学意义(P<0.05).结论 EB病毒Rta/IgG抗体表达与鼻咽癌分期无关.EBNA1/IgA抗体在早期鼻嘲癌表达水平相对较低.而VCA/IgA、EA/IgA抗体水平与颈部淋巴结转移程度相关,对于评估鼻咽癌临床分期有一定的参考价值.

Relationship between clinical stages of nasopharyngeal carcinoma and Epstein-Barr virus antibodies Rta/IgG, EBNA1/IgA, VCA/IgA and EA/IgA

Objective To evaluate the relationship between the clinical stages of nasopharyngeal carcinoma (NPC) and Epstein-Barr virus (EBV) antibodies Rta/IgG, EBNAI/IgA, VCA/IgA and EA/IgA. Methods Serum samples obtained from 211 untreated patients with NPC categorized by the project of 92' stage were examined for the presence of the EBV antibodies Rta/IgG and EBNA1/IgA by enzyme-linked immnunosorbent assay (EL1SA) and for VCA/IgA and EA/IgA by immunoenzymatic assay. The positive rates and antibody levels in the NPC patients in different TNM stages and clinical stages were analyzed statistically. Results No significant difference in Rta/IgG rA value was found in the N-PC patients in different TNM or clinical stages (P>0.05). The EBNA1/IgA rA value was significantly lower in stage T1, NO, and clinical stage I than in the other corresponding T stages, N stages and other clinical stage (P<0.05). The antibody titers of VCA/IgA and EA/IgA differed significantly between the N stages and the clinical stages (P<0.05). Conclusion The expression of EBV Rta/IgG is not associated with NPC stage. The expression of EBNA1/IgA is relatively low in early NPC. The antibody level of VCA/IgA and EA/IgA are significantly correlated to the degree of neck lymph node metastasis, and might be helpful to classify the clinical stages of NPC.