酶联免疫吸附试验检测大沙鼠心血冲洗液中鼠疫F1抗体的可行性分析

目的 分析酶联免疫吸附试验(ELISA)法检测大沙鼠心血冲洗液鼠疫F1抗体的可行性及其在鼠疫监测工作中的应用价值.方法 2007年,在准噶尔盆地大沙鼠鼠疫疫源地,采用弓形夹捕获大沙鼠.取大沙鼠血清、心血冲洗液和肝脾浸液,用ELISA法检测鼠疫F1抗体的阳性检出率和阳性滴度.数据处理用SPSS 17.0.结果 大沙鼠鼠疫F1抗体的阳性检出率与平均阳性滴度,血清分别为12.35%(20/162)和2535;心血冲洗液分别为10.49%(17/162)和23.75,肝脾浸液分别为6.79%(11/162)和2240.血清鼠疫F1抗体的阳性检出率与心血冲洗液比较,差异无统计学意义(χ2=1.333,P＞0.05),与肝脾浸液比较,差异有统计学意义(χ2=7.111,P＜0.0l);心血冲洗液与肝脾浸液比较,差异有统计学意义(χ2=6.250,P＜0.05).鼠疫F1抗体平均滴度,血清与心血冲洗液和肝脾浸液比较,差异有统计学意义(t值分别为2.290,3.612,P＜0.05或＜0.01).鼠疫F1抗体阳性符合率,血清与心血冲洗液为85.0%(17/20),与肝脾浸液为55.0%(11/20);心血冲洗液与肝脾浸液为64.7%(11/17).结论 ELISA法能检测到鼠心血冲洗液中鼠疫F1抗体,在鼠疫监测中,利用鼠心血冲洗液测定鼠疫F1抗体具有可行性.

Abstract：

Objective To analyse the feasibility of detecting F1 antibody to Yersinia pestis in flushing fluid of heart blood of Rhombomys opimus with enzyme linked immunosorbent assay(ELISA) method and its application value in surveillance of the disease. Methods Serum, flushing fluid of heart blood and infusion fluid of liver and spleen of Rhombomys opimus, which were caught by capture in the plague focus of Zunger basin in 2007, were taken to carry out detection for F1 antibodies to Yersinia pestis with ELISA method. The data were processed with SPSS 17.0. Results Positive rate and average titer of serum were 12.35%(11/162) and 25.35, of flushing fluid of heart blood were 10.49%(17/162) and 23.75 and of the infusion fluid of liver and spleen 6.79%(17/162) and 2240,respectively. No statistical difference was found in positive detection rate when it was compared between serum and flushing fluid of heart blood(χ2 = 1.333, P ＞ 0.05), but it was obviously different between serum and infusion fluid of liver and spleen(χ2 = 7.111, P ＜ 0.01 ) and between flushing fluid of heart blood and infusion fluid of liver and spleen(x2 = 6.250, P ＜ 0.05). There was a significant difference in average titer between serum, flushing fluid of heart blood and infusion fluid of liver and spleen(t = 2.290, 3.612, P ＜ 0.05 or ＜ 0.01 ). The plague F1 antibody positive coincidence rate of serum and flushing fluid of heart blood was 85.0%(17/20), of serum and infusion fluid of liver and spleen was 55.0% (11/20), and of flushing fluid of heart blood and infusion fluid of liver and spleen was 64.7%(11/17). Conclusions The ELISA method can detect Fl antibody in flushing fluid of heart blood,and the method is feasible in plague surveillance.

Detection of F1 antibody against Yersinia pestis in flushing fluid of heart blood of Rhombomys opimus with ELISA: a feasibility study

Objective To analyse the feasibility of detecting F1 antibody to Yersinia pestis in flushing fluid of heart blood of Rhombomys opimus with enzyme linked immunosorbent assay(ELISA) method and its application value in surveillance of the disease. Methods Serum, flushing fluid of heart blood and infusion fluid of liver and spleen of Rhombomys opimus, which were caught by capture in the plague focus of Zunger basin in 2007, were taken to carry out detection for F1 antibodies to Yersinia pestis with ELISA method. The data were processed with SPSS 17.0. Results Positive rate and average titer of serum were 12.35%(11/162) and 25.35, of flushing fluid of heart blood were 10.49%(17/162) and 23.75 and of the infusion fluid of liver and spleen 6.79%(17/162) and 2240,respectively. No statistical difference was found in positive detection rate when it was compared between serum and flushing fluid of heart blood(χ2 = 1.333, P ＞ 0.05), but it was obviously different between serum and infusion fluid of liver and spleen(χ2 = 7.111, P ＜ 0.01 ) and between flushing fluid of heart blood and infusion fluid of liver and spleen(x2 = 6.250, P ＜ 0.05). There was a significant difference in average titer between serum, flushing fluid of heart blood and infusion fluid of liver and spleen(t = 2.290, 3.612, P ＜ 0.05 or ＜ 0.01 ). The plague F1 antibody positive coincidence rate of serum and flushing fluid of heart blood was 85.0%(17/20), of serum and infusion fluid of liver and spleen was 55.0% (11/20), and of flushing fluid of heart blood and infusion fluid of liver and spleen was 64.7%(11/17). Conclusions The ELISA method can detect Fl antibody in flushing fluid of heart blood,and the method is feasible in plague surveillance.