中国寄生虫学与寄生虫病杂志 ›› 1998, Vol. 16 ›› Issue (6): 454-456.

• 实验报道 • 上一篇    下一篇

应用斑点金免疫渗滤法诊断日本血吸虫病

张恩英; 吴琛耘; 沈大康   

  1. 上海第二医科大学寄生虫学教研室
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1998-12-31 发布日期:1998-12-31

APPLICATION OF DOT IMMUNOGOLD FILTRATION ASSAY FOR DIAGNOSIS OF SCHISTOSOMIASIS JAPONICA

Zhang Enying; Wu Chenyun; Shen Dakang   

  1. Department of Parasitology; Shanghai Second Medical University; Shanghai 200025
  • Received:1900-01-01 Revised:1900-01-01 Online:1998-12-31 Published:1998-12-31

摘要: 目的:探索一种便捷的血吸虫病诊断方法。方法:在原已建立的ELISA法的基础上,应用3个针对日本血吸虫抗原的不同表位的单克隆抗体标记胶体金,建立检测日本血吸虫病患者血清中血吸虫抗原的斑点金免疫渗滤法。抗原与抗体通过渗滤在硝酸纤维薄膜上进行反应,数分钟用肉眼观察结果。结果:本法检测SEA的敏感度为16ng/ml,在69例慢性日本血吸虫病患者血清的检测中,阳性率为60.8%,特异性为95.2%;同时用dot-ELISA检测137例慢性日本血吸虫病患者,阳性率为54.7%、特异性为94.6%;夹心ELISA检测118例
慢性日本血吸虫病患者,阳性率为61.9%、特异性为95.7%。结论:经数理统计G检验证实斑点金免疫渗滤法的敏感性和特异性同ELISA 相近, 且操作更简便且快速。

关键词: 斑点金免疫渗滤法, dot-ELISA, 夹心ELISA, 日本血吸虫病

Abstract: AIM:To quest for a simple and convenient assay for the diagnosis of
schistosomiasis. METHODS: Three monoclonal antibodies against different epitopes of antigens of
S. japonicum were used to develop a dot immunogold filtration assay for detection of
schistosomal antigen antibody reaction on the membrane during the filtration process.The results
could be read with the naked eye within a few minutes. RESULTS: The sensitivity of the SEA assay
was 16 ng/ml.In 69 serum samples from patients with chronic schistosomiasis, the positive rate and specificity of this assay were 60.8% and 95.2% , respectively. Dot-ELISA was used in detecting 137 serum samples from patients with chronic schistosomiasis, the positive rate and specificity were 54.7%and 94.6%, respectively. When sandwich-ELISA was used in detecting 118 serum samples from patients with chronic schistosomiasis, the positive rate and specificity were 61.9% and 95.7%, respectively. CONCLUSION: The sensitivity and specificity of DIFA were similar to those of ELISA, but DIFA required less time and no special equipment.

Key words: Dot immunogold filtration assay, dot-ELISA, sandwich-ELISA, schistosomiasis