title: [Comparison of IgA/VCA, IgA/EA, IgG/EA in immunoenzyme methods and ZEBRA ELISA in early diagnosis of nasopharyngeal carcinoma.].
abstract: BACKGROUND
  To develop an ELISA method using Herpesvirus hominis type 4 (EBV) IgG/Zebra as capture antigen for large population screening.
  
  
  METHODS
  The ELISA method used purified ZEBRA antigen to detect the IgG/ZEBRA antibody from serum in nasopharyngeal carcinoma (NPC) and normal healthy subjects.
  
  
  RESULTS
  Of 288 NPC sera, 262 were detected positive, the sensitivity was 91%, while 5 of 96 normal sera were detected positive, the specificity was 94.8% and the results of NPC group and healthy group displayed significant difference (P less than 0.001). IgA/VCA, IgA/EA, IgG/EA in immunoenzyme methods and ZEBRA ELISA were compared during the NPC screening in two cities: Huizhou, Guangdong and Guiping, Guangxi, 5463 and 2017 samples respectively were tested and 5 earlier NPC patients were found.
  
  
  CONCLUSIONS
  The results indicate that this method has high specificity and sensitivity, and can be used for large population screening to assist early phase NPC diagnosis.
authors.affiliation: Institute for Viral Disease Control and Prevention, Beijing 100052, China. Corresponding author: ZHANG Xiao-mei, E-mail: xiaomei0114@yahoo.com.cn.
authors.forename: X M
authors.initials: XM
authors.lastname: Zhang
authors.forename: J M
authors.initials: JM
authors.lastname: Zhong
authors.forename: M Z
authors.initials: MZ
authors.lastname: Tang
authors.forename: X G
authors.initials: XG
authors.lastname: Zhang
authors.forename: J
authors.initials: J
authors.lastname: Liao
authors.forename: Y M
authors.initials: YM
authors.lastname: Zheng
authors.forename: H
authors.initials: H
authors.lastname: Deng
authors.forename: Y
authors.initials: Y
authors.lastname: Zeng
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000097:blood; D000956:Antigens, Viral / Q000276:immunology; D042241:Early Diagnosis; D004797:Enzyme-Linked Immunosorbent Assay; D018397:Equidae; D004854:Herpesvirus 4, Human / Q000276:immunology; D006801:Humans; D007070:Immunoglobulin A / Q000097:blood; D007074:Immunoglobulin G / Q000097:blood
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral; D007070:Immunoglobulin A; D007074:Immunoglobulin G