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Ulcerative, granulomatous glossitis and enteritis caused by Rhodococcus equi in a heifer.
Saied, Ahmad A; Bryan, Laura K; Bolin, David C.
Affiliation
  • Saied AA; Veterinary Diagnostic Laboratory, Department of Veterinary Sciences, College of Agriculture Food & Environment, University of Kentucky, Lexington KY (Saied, Bolin).
  • Bryan LK; Department of Veterinary Pathobiology, College of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, TX (Bryan).
  • Bolin DC; Veterinary Diagnostic Laboratory, Department of Veterinary Sciences, College of Agriculture Food & Environment, University of Kentucky, Lexington KY (Saied, Bolin).
J Vet Diagn Invest ; 31(5): 783-787, 2019 Sep.
Article in En | MEDLINE | ID: mdl-31347467
Rhodococcus equi infection in horses is common and is characterized by pyogranulomatous pneumonia and ulcerative enterocolitis. R. equi clinical disease in cattle, however, is rare and typically manifests as granulomatous lymphadenitis discovered in the abattoir. A 19-mo-old female Santa Gertrudis had a history of intermittent inappetence and weight loss for a 3-mo period before euthanasia. Gross and histologic examination revealed severe, chronic, ulcerative, and granulomatous inflammation in the tongue, pharynx, and small intestine. Also, the heifer had severe, granulomatous pharyngeal and mesenteric lymphadenitis. Bacterial cultures from the ileum, tongue, and liver yielded numerous-to-moderate numbers of R. equi. PCR analysis of the isolate detected the linear virulence plasmid vapN, which is often identified in bovine isolates (traA- and vapN-positive). The bacteria also lack the circular plasmids vapA and vapB that are associated with virulence in horses and swine, respectively. We report herein an atypical and unusual clinical presentation of R. equi infection in cattle, which has zoonotic potential.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Actinomycetales Infections / Cattle Diseases / Rhodococcus equi / Enteritis / Glossitis Type of study: Diagnostic_studies / Prognostic_studies Limits: Animals Language: En Journal: J Vet Diagn Invest Journal subject: MEDICINA VETERINARIA Year: 2019 Document type: Article Country of publication: United States

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Actinomycetales Infections / Cattle Diseases / Rhodococcus equi / Enteritis / Glossitis Type of study: Diagnostic_studies / Prognostic_studies Limits: Animals Language: En Journal: J Vet Diagn Invest Journal subject: MEDICINA VETERINARIA Year: 2019 Document type: Article Country of publication: United States