PMID- 11108465 OWN - NLM STAT- MEDLINE DCOM- 20010531 LR - 20190522 IS - 1040-6387 (Print) IS - 1040-6387 (Linking) VI - 12 IP - 6 DP - 2000 Nov TI - Comparison of virus isolation, reverse transcription-polymerase chain reaction, immunohistochemistry, and in situ hybridization for the detection of porcine reproductive and respiratory syndrome virus from naturally aborted fetuses and stillborn piglets. PG - 582-7 AB - Virus isolation, reverse transcription-polymerase chain reaction (RT-PCR), immunohistochemistry, and in situ hybridization methods were compared for the detection of porcine reproductive and respiratory syndrome virus (PRRSV). Seven aborted fetuses and 6 stillborn piglets naturally infected with PRRSV were used in the study. Viral antigen and viral nucleic acid were detected in macrophages and dendritic cells in the spleen, tonsil, lymph nodes, and thymus; in macrophages of liver, heart, and lung; and in endothelial cells and myocytes of the heart. Viral antigen and viral nucleic acid were most consistently detected in the spleen. Of the 13 samples, 6 were positive for PRRSV by all 4 techniques. Four (31%) samples were positive for PRRSV by RT-PCR, in situ hybridization, and virus isolation. Two (15%) samples were positive for PRRSV by virus isolation, RT-PCR, and in situ hybridization. One (8%) was positive for PRRSV by virus isolation and RT-PCR. The RT-PCR identified the presence of PRRSV more frequently than the other methods. However, when only formalin-fixed tissues are submitted, immunohistochemistry and in situ hybridization would be useful methods for the detection of PRRSV antigen and nucleic acid. FAU - Cheon, D S AU - Cheon DS AD - Department of Veterinary Pathology, College of Veterinary Medicine and School of Agricultural Biotechnology, Seoul National University, Suwon, Kyounggi-Do, Republic of Korea. FAU - Chae, C AU - Chae C LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Vet Diagn Invest JT - Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc JID - 9011490 SB - IM MH - Abortion, Veterinary/pathology/*virology MH - Animals MH - Female MH - Fetal Death/pathology/*veterinary/virology MH - Immunohistochemistry/methods MH - In Situ Hybridization/methods MH - Macrophages/pathology/virology MH - Polymerase Chain Reaction/methods MH - Porcine Reproductive and Respiratory Syndrome/embryology/*pathology MH - Porcine respiratory and reproductive syndrome virus/*isolation & purification MH - Pregnancy MH - Reproducibility of Results MH - Reverse Transcriptase Polymerase Chain Reaction MH - Swine EDAT- 2000/12/07 11:00 MHDA- 2001/06/02 10:01 CRDT- 2000/12/07 11:00 PHST- 2000/12/07 11:00 [pubmed] PHST- 2001/06/02 10:01 [medline] PHST- 2000/12/07 11:00 [entrez] AID - 10.1177/104063870001200619 [doi] PST - ppublish SO - J Vet Diagn Invest. 2000 Nov;12(6):582-7. doi: 10.1177/104063870001200619.