PMID- 9186940 OWN - NLM STAT- MEDLINE DCOM- 19970731 LR - 20190831 IS - 0166-0934 (Print) IS - 0166-0934 (Linking) VI - 65 IP - 2 DP - 1997 May TI - An indirect ELISA for the detection of antibodies against porcine reproductive and respiratory syndrome virus using recombinant nucleocapsid protein as antigen. PG - 169-81 AB - An indirect enzyme-linked immunosorbent assay termed rnPRRS ELISA using baculovirus-expressed and affinity-purified viral nucleocapsid protein (rNC) antigen was developed for detecting antibodies against porcine reproductive and respiratory syndrome virus (PRRSV) in swine sera. Sera (1395) originating from different European countries were used for the validation of this assay. The rnPRRS ELISA was capable of detecting antibodies in all sera known to contain anti-PRRSV antibodies, resulting in 100% sensitivity. The specificity was 95.8%. The rnPRRS ELISA was more sensitive compared to the most widely used tests for the diagnosis of porcine reproductive and respiratory syndrome (PRRS) (i) a commercially available ELISA; (ii) the indirect immunofluorescence assay (IIFA); and (iii) the immunoperoxidase monolayer assay (IPMA). The main advantage of the rnPRRS ELISA compared to an ELISA using whole virus antigen is the use of a single immunogenic protein instead of infectious PRRSV. The rnPRRS ELISA is suitable for routine diagnosis of PRRS and also for epidemiological surveys since it allows highly reliable testing of a large number of sera within a short period of time. FAU - Denac, H AU - Denac H AD - Institute of Virology and Immunoprophylaxis, Mittelhausern, Switzerland. FAU - Moser, C AU - Moser C FAU - Tratschin, J D AU - Tratschin JD FAU - Hofmann, M A AU - Hofmann MA LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - J Virol Methods JT - Journal of virological methods JID - 8005839 RN - 0 (Antibodies, Viral) RN - 0 (Antigens, Viral) RN - 0 (Recombinant Proteins) RN - 0 (Viral Structural Proteins) SB - IM MH - Animals MH - Antibodies, Viral/*blood MH - Antigen-Antibody Reactions MH - Antigens, Viral/*genetics MH - Baculoviridae/chemistry/genetics MH - Cloning, Molecular MH - Enzyme-Linked Immunosorbent Assay/methods MH - Genes, Viral MH - Genetic Vectors MH - Macrophages, Alveolar/virology MH - Nucleocapsid/*genetics/*immunology/metabolism MH - Polymerase Chain Reaction MH - Porcine respiratory and reproductive syndrome virus/*immunology/metabolism MH - Recombinant Proteins/*immunology/isolation & purification MH - Sensitivity and Specificity MH - Sequence Analysis, DNA MH - Serology MH - Swine MH - Viral Structural Proteins/genetics EDAT- 1997/05/01 00:00 MHDA- 1997/05/01 00:01 CRDT- 1997/05/01 00:00 PHST- 1997/05/01 00:00 [pubmed] PHST- 1997/05/01 00:01 [medline] PHST- 1997/05/01 00:00 [entrez] AID - S0166-0934(97)02186-1 [pii] AID - 10.1016/s0166-0934(97)02186-1 [doi] PST - ppublish SO - J Virol Methods. 1997 May;65(2):169-81. doi: 10.1016/s0166-0934(97)02186-1.