猪圆环病毒型检测技术PPT课件
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PCV2标准阳性和阴性血清:IPMA法标定不同效价的标准PCV2阳性 血清50份,PCV2阴性血清30份
Comparison for sensitivity, specificity and coincidence rate of five kinds of kits
PCV2-dCap(武汉科前,瑞普)
竞争ELISA:基于中和性单抗
IFA 敏感性高、特异性好 成本高、反应板需冷冻 保存
IPMA 敏感性高、特异性好 反应板需冷冻保存
ELISA 高通量和自动化 无法现场诊断
GICA 操作简便,快速,使用 于基层 无法定量检测
PCV2-Cap单克隆抗体的制备和鉴定
PCV2a/JF1
Identification of critical amino acids that determine a conformational epitope in PCV2-Cap
59-60aa
(Huang et al.,2011; Liu et al., 2013)
(Saha et al., 2012)
r=0.9381
2 3 4 5 6 7 8 9r=0Leabharlann 85931011 12
1:400
1:400 1:400
1:1600
1:3200 1:6400
1:1600
1:1600 1:3200
22
23 24
1:3200
1:3200 1:6400
1:12800
1:6400 1:12800
1:12800
1:12800 1:25600
PCV2相关疾病的防控
疫苗免疫
免疫效力:特异性抗体/检测方法
抗原检测:PCR/毒价测定/Capture-ELISA
PCV2抗体检测方法
免疫过氧化物酶单层细胞试验(IPMA) 间接免疫荧光(IFA) 胶体金免疫层析检测试纸条(GICA) ELISA
间接ELISA:PCV2 (荷兰BIOCHEK, 美国synbiotics,西班牙Ingenasa);PCV2-Cap;
Harbin Veterinary Research Institute, CAAS, China
Coninsidence of C-ELISA and SNA for 132 sera from immunnization and chanllenge pigs
Serum neutralizing test Testing positive numbers 79 Testing negative numbers 6 Total
试剂盒 试剂盒 A 试剂盒 B 试剂盒 C 试剂盒 D 试剂盒 E 试剂盒名称
PCV2抗体酶联免疫检测试剂盒 PCV2-dCap-ELISA抗体检测试剂盒 PCV2-ELISA抗体检测试剂盒 PCV2竞争ELISA抗体检测试剂盒 Ingezim Circo IgG 1 PCV K.1 ELISA kit
The antibodies titers detected by C- ELISA were more similar to the results of serum neutralization assay than the results of IPMA .
PCV2 C-ELISA 抗体检测试剂盒和商品化试 剂盒的比较试验
Detection methods C- ELISA Testing positive numbers
85
Testing negative numbers
Total
1
80
46
52
47
132
Using serum neutralization assay as a reference standard, the sensitivity of C-ELISA was 98.8% (79/80) and specificity was 88.5% (46/52) .
PCV2竞争ELISA抗体检测试剂盒的原理
1 包被PCV2阳性血清
2 捕获
病毒
4 与酶标单体反应及显色
3 与被检血清抗体结合
The cut-off value of the C-ELISA
35 30 25
PI(%)
20 15 10 5 0 -5 1 6 11 16 21 26 31 36 41 46 51 56 61 66 71 76 81 86 91 96 -10 Sera No. PI ≥45.6% was considered positive. PI≤35.13% was considered negative.
Harbin Veterinary Research Institute, CAAS, China
Detection of antibody titers to PCV2 by SNA, IPMA and C-ELISA
Serum No. SNA 1 1:50 1:100 1:100 1:100 1:200 1:200 1:200 1:200 1:200 Antibody titer IPMA 1:400 1:800 1:400 1:800 1:400 1:800 1:800 1:800 1:1600 C-ELISA 1:200 1:400 1:400 1:200 1:800 1:800 1:800 1:800 1:800 13 14 15 16 17 18 19 20 21 Serum No. SNA 1:800 1:800 1:800 1:800 1:800 1:1600 1:1600 1:3200 1:3200 Antibody titer IPMA 1:3200 1:3200 1:6400 1:800 1:1600 1:3200 1:12800 1:6400 1:12800 C-ELISA 1:3200 1:3200 1:3200 1:1600 1:3200 1:6400 1:6400 1:12800 1:25600
猪圆环病毒型检 测技术
PCV2简介---PCV2的形态及其基因组
nt
无囊膜,20面体对称,17nm
PCV2简介---Cap蛋白的结构
PCV2简介---PCV2的致病性
(PMWS)
(PDNS)
(PRDC)
(RF)
PCV2相关疾病的防控
疫苗免疫
免疫效力:特异性抗体/检测方法
抗原含量:检测方法/毒价测定/抗原捕获ELISA