弓形虫感染鼠血清中弓形虫循环抗原的检测

DETECTON OF CIRCULATING ANTIGEN IN SERA FROM MICE INFECTED WITH TOXOPLASMA TACHYZOITES

目的：探索弓形虫感染早期诊断方法。方法：用快速ＥＬＩＳＡ检测弓形虫感染鼠血清中弓形虫循环抗原。结果：在轻、中、重３个感染组，分别于感染后ｄ４、ｄ４及ｄ３检测到弓形虫循环抗原。结论：感染虫体数量越多则弓形虫循环抗原测出时间越早，ＯＤ值亦越高。检测弓形虫循环抗原具有早期诊断价值。

AIM: To explore an assay method for the early diagnosis of Toxoplasma infection. METHODS: Serum samples collected from three groups of mice infected experimentally with different doses of Toxoplasma trophozoites were detected for the presence of Toxoplasma circulating antigen by using fast ELISA.RESULTS: Toxoplasma circulating antigen was detected on days 4, 4 and 3after infection in light, moderate and heavy infection groups, respectively. CONCLUSION: The level of circulating antigen was in parallel with the duration of infection. The determination of circulating antigen is useful in the early diagnosis of Toxoplasma infection.