PMID- 36686194 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230918 IS - 2297-1769 (Print) IS - 2297-1769 (Electronic) IS - 2297-1769 (Linking) VI - 9 DP - 2022 TI - First description of interdigital hyperplasia associated with contagious ovine digital dermatitis in two sheep. PG - 1028880 LID - 10.3389/fvets.2022.1028880 [doi] LID - 1028880 AB - Interdigital hyperplasia (IH) is a fold of fibrous tissue protruding into the interdigital space that rarely occurs in sheep. Interdigital hyperplasia secondary infected with bovine digital dermatitis (BDD) treponemes has been reported in cattle in the course of the increasing spread of classical BDD lesions. In this report, we describe proliferative/ulcerative interdigital lesions associated with contagious ovine digital dermatitis (CODD) treponemes and clinically scored as (IH+CODD), occurring in both hind limbs of a ram and the left hindlimb of a ewe. Both cases exhibited epidermal hyperplasia, parakeratosis and focal-extensive areas of epidermal necrosis with numerous infiltrating neutrophils. Treponema PCR and fluorescence in situ hybridization (FISH) were positive for Treponema phylotype 1 (PT1). In addition, Dichelobacter (D.) nodosus and Porphyromonas (P.) levii were detected in the biopsy by PCR. In three slaughter sheep, without claw lesions, which were kept together with both affected sheep, Treponema spp. were detected neither with PCR nor FISH; the PCRs for D. nodosus and P. levii were also negative. Complete clinical healing occurred in the ewe within 6 weeks after three local applications of a chlortetracycline spray in 2 weeks intervals. This report is the first description of IH+CODD in sheep as demonstrated by a combination of histopathological and molecular analyses. CI - Copyright (c) 2023 Alsaaod, Schmid, Zwahlen, Soto, Wildi, Seuberlich and Steiner. FAU - Alsaaod, Maher AU - Alsaaod M AD - Clinic for Ruminants, Department of Clinical Veterinary Science, Vetsuisse Faculty, University of Bern, Bern, Switzerland. FAU - Schmid, Robin Michael AU - Schmid RM AD - Clinic for Ruminants, Department of Clinical Veterinary Science, Vetsuisse Faculty, University of Bern, Bern, Switzerland. FAU - Zwahlen, Nathalie AU - Zwahlen N AD - Clinic for Ruminants, Department of Clinical Veterinary Science, Vetsuisse Faculty, University of Bern, Bern, Switzerland. FAU - Soto, Sara AU - Soto S AD - Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, Institute of Animal Pathology, University of Bern, Bern, Switzerland. FAU - Wildi, Nicole AU - Wildi N AD - Division of Neurological Sciences, Vetsuisse Faculty Bern, University of Bern, Bern, Switzerland. FAU - Seuberlich, Torsten AU - Seuberlich T AD - Division of Neurological Sciences, Vetsuisse Faculty Bern, University of Bern, Bern, Switzerland. FAU - Steiner, Adrian AU - Steiner A AD - Clinic for Ruminants, Department of Clinical Veterinary Science, Vetsuisse Faculty, University of Bern, Bern, Switzerland. LA - eng PT - Journal Article DEP - 20230105 PL - Switzerland TA - Front Vet Sci JT - Frontiers in veterinary science JID - 101666658 PMC - PMC9849560 OTO - NOTNLM OT - Treponema spp. OT - contagious ovine digital dermatitis (CODD) OT - interdigital hyperplasia OT - lameness OT - sheep 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- 2023/01/24 06:00 MHDA- 2023/01/24 06:01 PMCR- 2022/01/01 CRDT- 2023/01/23 04:46 PHST- 2022/08/26 00:00 [received] PHST- 2022/12/12 00:00 [accepted] PHST- 2023/01/23 04:46 [entrez] PHST- 2023/01/24 06:00 [pubmed] PHST- 2023/01/24 06:01 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fvets.2022.1028880 [doi] PST - epublish SO - Front Vet Sci. 2023 Jan 5;9:1028880. doi: 10.3389/fvets.2022.1028880. eCollection 2022.