PMID- 23031343 OWN - NLM STAT- MEDLINE DCOM- 20140602 LR - 20200103 IS - 1873-2542 (Electronic) IS - 0378-1135 (Linking) VI - 162 IP - 2-4 DP - 2013 Mar 23 TI - Exploratory study of Torque teno sus viruses in pulmonary inflammatory lesions in pigs. PG - 338-344 LID - S0378-1135(12)00509-3 [pii] LID - 10.1016/j.vetmic.2012.09.011 [doi] AB - The pathogenic role of Torque teno sus viruses 1 (TTSuV1) and 2 (TTSuV2), and their capacity to induce lesions are controversial. TTSuVs have been linked to porcine circovirus diseases (PCVDs) and described as cause of mild respiratory lesions in gnotobiotic pigs; moreover, an increased TTSuV prevalence has been found in porcine respiratory disease complex (PRDC) affected pigs. In the present study, TTSuV1 and TTSuV2 loads and their prevalence were evaluated in formalin-fixed, paraffin-embedded (FFPE) lung samples displaying different types of inflammatory lesions. Such measurements were made by means of a real time quantitative PCR technique to detect these viruses. The technique was optimised for its use on FFPE tissues comparing results with frozen lung tissues. Selection criteria included negativity against porcine circovirus type 2 (PCV2), porcine reproductive and respiratory syndrome virus (PRRSV), Aujeszky's disease virus (ADV) and swine influenza virus (SIV). Results from the present study demonstrated that both TTSuVs were present in lung. However, TTSuV2 had higher viral load and prevalence in all the studied groups when compared to TTSuV1. TTSuV2 mean load was also higher in lungs with viral background (interstitial pneumonia and broncho-interstitial pneumonia) when compared to normal lungs or to those with bacterial background (catarrhal-purulent bronchopneumonia, fibrinous pleuritis and fibrinous-necrotizing pleuropneumonia). This result suggests a possible role of TTSuV2 in the pathogenic mechanism of inflammatory lesions of lungs compatible with viral infection. CI - Copyright (c) 2012 Elsevier B.V. All rights reserved. FAU - Aramouni, M AU - Aramouni M AD - Centre de Recerca en Sanitat Animal (CReSA), UAB-IRTA, Campus de la Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona, Spain. Electronic address: mario.aramouni@cresa.uab.cat. FAU - Martinez, J AU - Martinez J AD - Departament de Sanitat i Anatomia Animals, Facultat Veterinaria, Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona, Spain. FAU - Nieto, D AU - Nieto D AD - Centre de Recerca en Sanitat Animal (CReSA), UAB-IRTA, Campus de la Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona, Spain. FAU - Kekarainen, T AU - Kekarainen T AD - Centre de Recerca en Sanitat Animal (CReSA), UAB-IRTA, Campus de la Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona, Spain. FAU - Segales, J AU - Segales J AD - Centre de Recerca en Sanitat Animal (CReSA), UAB-IRTA, Campus de la Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona, Spain; Departament de Sanitat i Anatomia Animals, Facultat Veterinaria, Universitat Autonoma de Barcelona, 08193 Bellaterra, Barcelona, Spain. Electronic address: joaquim.segales@cresa.uab.es. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120914 PL - Netherlands TA - Vet Microbiol JT - Veterinary microbiology JID - 7705469 SB - IM MH - Animals MH - DNA Virus Infections/epidemiology/*veterinary/virology MH - Lung/virology MH - Paraffin Embedding MH - Pneumonia, Viral/epidemiology/*veterinary/virology MH - Prevalence MH - Real-Time Polymerase Chain Reaction MH - Spain/epidemiology MH - Sus scrofa MH - Swine MH - Swine Diseases/epidemiology/*virology MH - Torque teno virus/genetics/*isolation & purification MH - Viral Load EDAT- 2012/10/04 06:00 MHDA- 2014/06/03 06:00 CRDT- 2012/10/04 06:00 PHST- 2012/06/19 00:00 [received] PHST- 2012/09/06 00:00 [revised] PHST- 2012/09/07 00:00 [accepted] PHST- 2012/10/04 06:00 [entrez] PHST- 2012/10/04 06:00 [pubmed] PHST- 2014/06/03 06:00 [medline] AID - S0378-1135(12)00509-3 [pii] AID - 10.1016/j.vetmic.2012.09.011 [doi] PST - ppublish SO - Vet Microbiol. 2013 Mar 23;162(2-4):338-344. doi: 10.1016/j.vetmic.2012.09.011. Epub 2012 Sep 14.