PMID- 15847915 OWN - NLM STAT- MEDLINE DCOM- 20050922 LR - 20220317 IS - 0166-0934 (Print) IS - 1879-0984 (Electronic) IS - 0166-0934 (Linking) VI - 126 IP - 1-2 DP - 2005 Jun TI - The use of endogenous and exogenous reference RNAs for qualitative and quantitative detection of PRRSV in porcine semen. PG - 21-30 AB - Semen is known to be a route of porcine reproductive and respiratory syndrome virus (PRRSV) transmission. A method was developed for qualitative and quantitative detection of the seminal cell-associated PRRSV RNA in relation to endogenous and exogenous reference RNAs. As endogenous control for one-step real-time reverse transcription (RT)-PCR UBE2D2 mRNA was selected. Particularly for the analysis of persistent infections associated with low copy numbers of PRRSV RNA, UBE2D2 mRNA is an ideal control due to its low expression in seminal cells and its detection in all samples analysed (n = 36). However, the amount of UBE2D2 mRNA in porcine semen varied (up to 106-fold), thus its use is limited to qualitative detection of PRRSV RNA. For quantitation, a synthetic, non-metazoan RNA was added to the RNA isolation reaction at an exact copy number. The photosynthesis gene ribulose-1,5-bisphosphate carboxylase/oxygenase large subunit (rbcL) from Arabidopsis thaliana was used as an exogenous spike. Unexpectedly, PRRSV RNA was detected in a herd of specific pathogen-free (SPF) boars which were tested ELISA-negative for anti-PRRSV antibodies. Therefore, RT-PCR for seminal cell-associated PRRSV is a powerful tool for managing the SPF status during quarantine programs and for routine outbreak investigations. FAU - Revilla-Fernandez, Sandra AU - Revilla-Fernandez S AD - Institute of Animal Breeding and Genetics, Department for Animal Breeding and Reproduction, University of Veterinary Medicine, Veterinaerplatz 1, A-1210 Vienna, Austria. FAU - Wallner, Barbara AU - Wallner B FAU - Truschner, Klaus AU - Truschner K FAU - Benczak, Alexandra AU - Benczak A FAU - Brem, Gottfried AU - Brem G FAU - Schmoll, Friedrich AU - Schmoll F FAU - Mueller, Mathias AU - Mueller M FAU - Steinborn, Ralf AU - Steinborn R LA - eng PT - Evaluation 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 (RNA, Messenger) RN - 0 (RNA, Viral) RN - EC 2.3.2.23 (Ubiquitin-Conjugating Enzymes) RN - EC 4.1.1.39 (RbcL protein, plastid) RN - EC 4.1.1.39 (Ribulose-Bisphosphate Carboxylase) SB - IM MH - Animals MH - Molecular Sequence Data MH - Porcine Reproductive and Respiratory Syndrome/*diagnosis/virology MH - Porcine respiratory and reproductive syndrome virus/genetics/*isolation & purification MH - RNA, Messenger/analysis MH - RNA, Viral/*analysis/genetics MH - Reference Standards MH - Reverse Transcriptase Polymerase Chain Reaction/*standards MH - Ribulose-Bisphosphate Carboxylase/genetics MH - Semen/*virology MH - Sensitivity and Specificity MH - Sequence Analysis, DNA MH - Swine MH - Ubiquitin-Conjugating Enzymes/genetics PMC - PMC7112884 EDAT- 2005/04/26 09:00 MHDA- 2005/09/24 09:00 PMCR- 2005/02/23 CRDT- 2005/04/26 09:00 PHST- 2004/08/12 00:00 [received] PHST- 2005/01/17 00:00 [revised] PHST- 2005/01/25 00:00 [accepted] PHST- 2005/04/26 09:00 [pubmed] PHST- 2005/09/24 09:00 [medline] PHST- 2005/04/26 09:00 [entrez] PHST- 2005/02/23 00:00 [pmc-release] AID - S0166-0934(05)00030-3 [pii] AID - 10.1016/j.jviromet.2005.01.018 [doi] PST - ppublish SO - J Virol Methods. 2005 Jun;126(1-2):21-30. doi: 10.1016/j.jviromet.2005.01.018.