PMID- 24725449 OWN - NLM STAT- MEDLINE DCOM- 20140710 LR - 20181202 IS - 1873-2542 (Electronic) IS - 0378-1135 (Linking) VI - 171 IP - 1-2 DP - 2014 Jun 25 TI - Identification of Treponema pedis as the predominant Treponema species in porcine skin ulcers by fluorescence in situ hybridization and high-throughput sequencing. PG - 122-31 LID - S0378-1135(14)00169-2 [pii] LID - 10.1016/j.vetmic.2014.03.019 [doi] AB - Skin lesions often seen in pig production are of great animal welfare concern. To study the potential role of Treponema bacteria in porcine skin ulcers, we investigated the presence and distribution of these organisms in decubital shoulder ulcers (n=51) and ear necroses (n=54) by fluorescence in situ hybridization (FISH) and high-throughput sequencing. In addition, two cases of facial ulcers and five cases of other skin ulcers were included in the study. Samples from all 112 skin lesions and intact skin from pigs without skin ulcers (n=14) were screened by FISH. Three different oligonucleotide probes targeting 16S rRNA were used, specific for domain bacterium, Treponema spp. and species T. pedis. Screening showed that two cases each of facial and other ulcers, 35 (69%) of shoulder ulcers and 32 (59%) of ear necroses were positive for Treponema spp. T. pedis was the unequivocally, predominant species typically constituting more than 90% of the treponemes in a lesion, assessed visually by microscopy. Altogether, T. pedis was demonstrated in 69 of the 71 Treponema spp. positive lesions. We conclude that Treponema spp. are frequently present and abundant in various skin ulcers of pigs. The results from this study point toward an important role of T. pedis as a secondary bacterial infection in porcine skin ulcers, especially in severe and chronic lesions. CI - Copyright (c) 2014 Elsevier B.V. All rights reserved. FAU - Karlsson, Frida AU - Karlsson F AD - Department of Clinical Sciences, Swedish University of Agricultural Sciences, SE-75007 Uppsala, Sweden. Electronic address: frida.karlsson@slu.se. FAU - Klitgaard, Kirstine AU - Klitgaard K AD - National Veterinary Institute, Technical University of Denmark, 1870 Frederiksberg, Denmark. FAU - Jensen, Tim Kare AU - Jensen TK AD - National Veterinary Institute, Technical University of Denmark, 1870 Frederiksberg, Denmark. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140325 PL - Netherlands TA - Vet Microbiol JT - Veterinary microbiology JID - 7705469 RN - 0 (Oligonucleotide Probes) RN - 0 (RNA, Ribosomal, 16S) SB - IM MH - Animals MH - *In Situ Hybridization, Fluorescence MH - Oligonucleotide Probes/genetics MH - RNA, Ribosomal, 16S/genetics MH - Sensitivity and Specificity MH - Skin Ulcer/microbiology/*veterinary MH - Swine MH - Swine Diseases/*diagnosis/*microbiology/pathology MH - Treponema/classification/*genetics MH - Treponemal Infections/diagnosis/microbiology/pathology/*veterinary OTO - NOTNLM OT - Ear necrosis OT - FISH OT - Pig OT - Shoulder ulcer OT - Skin ulcer OT - Treponema EDAT- 2014/04/15 06:00 MHDA- 2014/07/11 06:00 CRDT- 2014/04/15 06:00 PHST- 2014/02/03 00:00 [received] PHST- 2014/03/07 00:00 [revised] PHST- 2014/03/12 00:00 [accepted] PHST- 2014/04/15 06:00 [entrez] PHST- 2014/04/15 06:00 [pubmed] PHST- 2014/07/11 06:00 [medline] AID - S0378-1135(14)00169-2 [pii] AID - 10.1016/j.vetmic.2014.03.019 [doi] PST - ppublish SO - Vet Microbiol. 2014 Jun 25;171(1-2):122-31. doi: 10.1016/j.vetmic.2014.03.019. Epub 2014 Mar 25.