PMID- 35174243 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220219 IS - 2297-1769 (Print) IS - 2297-1769 (Electronic) IS - 2297-1769 (Linking) VI - 8 DP - 2021 TI - A Virulent Trueperella pyogenes Isolate, Which Causes Severe Bronchoconstriction in Porcine Precision-Cut Lung Slices. PG - 824349 LID - 10.3389/fvets.2021.824349 [doi] LID - 824349 AB - Trueperella pyogenes causes disease in cattle, sheep, goats and swine, and is involved occasionally in human disease worldwide. Most reports implicating T. pyogenes have been associated with clinical cases, whereas no report has focused on pathogenicity of T. pyogenes in mouse models or precision-cut lung slice (PCLS) cultures from swine. Here, we isolated and identified a virulent, beta-hemolytic, multidrug-resistant T. pyogenes strain named 20121, which harbors the virulence marker genes fimA, fimE, nanH, nanP and plo. It was found to be highly resistant to erythromycin, azithromycin and medemycin. Strain 20121 was pathogenic in mouse infection models, displaying pulmonary congestion and inflammatory cell infiltration, partial degeneration in epithelial cells of the tracheal and bronchiolar mucosa, a small amount of inflammatory cell infiltration in the submucosa, and bacteria (>10(4) CFU/g) in the lung. Importantly, we used T. pyogenes 20121 to infect porcine precision-cut lung slices (PCLS) cultures for the first time, where it caused severe bronchoconstriction. Furthermore, dexamethasone showed its ability to relieve bronchoconstriction in PCLS caused by T. pyogenes 20121, highlighting dexamethasone may assist antibiotic treatment for clinical T. pyogenes infection. This is the first report of T. pyogenes used to infect and cause bronchoconstriction in porcine PCLS. Our results suggest that porcine PCLS cultures as a valuable 3D organ model for the study of T. pyogenes infection and treatment in vitro. CI - Copyright (c) 2022 Qin, Meng, He, Yang, Wang, Tang, Sun, Zhang, Cai and Wang. FAU - Qin, Lei AU - Qin L AD - National Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China. AD - College of Veterinary Medicine, Northeast Agricultural University, Harbin, China. FAU - Meng, Fandan AU - Meng F AD - National Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China. FAU - He, Haijuan AU - He H AD - Institute of Animal Husbandry, Heilongjiang Academy of Agriculture Sciences, Harbin, China. FAU - Yang, Yong-Bo AU - Yang YB AD - National Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Wang, Gang AU - Wang G AD - National Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Tang, Yan-Dong AU - Tang YD AD - National Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Sun, Mingxia AU - Sun M AD - National Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Zhang, Wenlong AU - Zhang W AD - College of Veterinary Medicine, Northeast Agricultural University, Harbin, China. FAU - Cai, Xuehui AU - Cai X AD - National Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Wang, Shujie AU - Wang S AD - National Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China. LA - eng PT - Journal Article DEP - 20220131 PL - Switzerland TA - Front Vet Sci JT - Frontiers in veterinary science JID - 101666658 PMC - PMC8841747 OTO - NOTNLM OT - Trueperella pyogenes OT - bronchoconstriction OT - infection OT - porcine precision-cut lung slices OT - virulent COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/02/18 06:00 MHDA- 2022/02/18 06:01 PMCR- 2021/01/01 CRDT- 2022/02/17 05:38 PHST- 2021/11/29 00:00 [received] PHST- 2021/12/23 00:00 [accepted] PHST- 2022/02/17 05:38 [entrez] PHST- 2022/02/18 06:00 [pubmed] PHST- 2022/02/18 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 10.3389/fvets.2021.824349 [doi] PST - epublish SO - Front Vet Sci. 2022 Jan 31;8:824349. doi: 10.3389/fvets.2021.824349. eCollection 2021.