Detection of PMV-1 specific antibodies with a monoclonal antibody blocking enzyme-linked immunosorbent assay

被引:44
作者
Czifra, G
Nilsson, M
Alexander, DJ
Manvell, R
Kecskemeti, S
Engstrom, BE
机构
[1] NATL VET INST, SVANOVA BIOTECH, S-75183 UPPSALA, SWEDEN
[2] CENT VET LAB, ADDLESTONE KT15 3NB, SURREY, ENGLAND
[3] VET INST DEBRECEN, H-4002 DEBRECEN, HUNGARY
关键词
D O I
10.1080/03079459608419175
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
A highly reproducible monoclonal antibody (Mab) blocking ELISA (B-ELISA) has been developed and evaluated for the detection of NDV-specific antibodies. The Mab utilised is specific for a conserved PMV-1 serotype-specific epitope, as demonstrated by the indirect immunoperoxidase test. It reacted with all strains representing different serogroups within the PMV-1 serotype, but not with any strain belonging to other PMV serotypes. Sensitivity and specificity of the B-ELISA were compared with the haemagglutination inhibition test (HI). Blocking and HI antibodies were detected in sera of chickens 8 days post-experimental infection. The B-ELISA proved consistently more sensitive than the HI test. In another survey, 62 sera from experimentally vaccinated chickens were tested; 95.2% proved positive by B-ELISA, 85.5% by indirect ELISA and 74 % by HI test. When 504 field sera from vaccinated chickens and turkeys were tested, 98% were positive by B-ELISA, and 69% by HI. The specificity was evaluated by testing 1066 samples from NDV-free flocks, all of which proved negative by both methods. Other advantages of the B-ELISA include easy standardization and quality control, and ability to test sera from any species (including exotic or wild birds as well as mammals). The use of low dilution serum or egg-yolk samples makes the test quick and easy to perform and suitable for large-scale screening.
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页码:691 / 703
页数:13
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