Prolonged persistence of Listeria monocytogenes after intragastric infection in corticosteroid-treated mice

N. Prats, S. López, M. Domingo, V. Briones, J. A. García, L. Domínguez, A. J. Marco

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    11 Citations (Scopus)

    Abstract

    In an attempt to obtain a model more closely resembling natural listeriosis, we studied the course of infection in mice inoculated by the intragastric route with Listeria monocytogenes. Corticosteroid-treated, and untreated mice both developed subclinical infection without mortality, but faecal shedding and persistence of bacteria in the liver and spleen of corticosteroid-treated mice were significantly more protracted than in untreated mice. Untreated mice cleared the bacteria from their livers and spleens by day 5 postinfection (PI), whereas treated mice did not clear the organisms until 8-9 days PI. In untreated mice faecal shedding lasted 5 days PI, whereas in treated mice the organisms were recovered at significantly higher levels until day 9 PI. The only intestinal lesions observed were mild pyogranulomatous changes in the dome area of some Peyer's patches in treated mice.
    Original languageEnglish
    Pages (from-to)79-85
    JournalVeterinary Microbiology
    Volume58
    Issue number1
    DOIs
    Publication statusPublished - 31 Oct 1997

    Keywords

    • Corticosteroids
    • Listeria monocytogenes
    • Mouse

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