Listeria monocytogenes Infection of the Alimentary Tract (Enteric Listeriosis) of Sheep in New Zealand

R. A. Fairley, Patricia Pesavento, R. G. Clark

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

A retrospective study of the microscopical lesions of nine cases of enteric listeriosis of sheep was conducted. Lesions were present variably in the abomasum and the small and large intestines. The inflammation was multifocal to extensive, mainly neutrophilic and involved the lamina propria, muscularis mucosa and superficial submucosa, with intense focus on the muscularis mucosa. The mesenteric lymph nodes were also affected and, in some sheep, the liver. Large numbers of gram-positive rods were demonstrated within areas of inflammation in the gastrointestinal tract and mesenteric lymph nodes and Listeria spp. were identified immunohistochemically in these lesions. Ultrastructurally, bacteria were found free within the cytoplasm of myofibres of the muscularis mucosa.

Original languageEnglish (US)
Pages (from-to)308-313
Number of pages6
JournalJournal of Comparative Pathology
Volume146
Issue number4
DOIs
StatePublished - May 2012

Keywords

  • Alimentary tract
  • Immunohistochemistry
  • Listeria monocytogenes
  • Sheep

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • veterinary(all)

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