Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc · 2004
An outbreak of Francisella tularensis in captive prairie dogs: an immunohistochemical analysis.
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Zeidner Nordin S, Carter Leon G, Monteneiri John A, Petersen Jeannine M, Schriefer Martin, Gage Kenneth L, Hall Greg, Chu May C
Аннотация
An immunohistochemical assay was developed and tested for detection of Francisella tularensis lipopolysaccaride antigen in tissues of captive prairie dogs (Cynomys ludovicianus). Tissues from 59 cases of F. tularensis were examined by this technique, which was corroborated by direct fluorescent antibody assay and direct isolation of the organism. In infected prairie dogs, studies indicated multiple, severe, necroprurulent foci occurring in the liver, lung, spleen, terminal ileum, and mandibular lymph node. Immunohistochemical analysis of the same formalin-fixed tissues indicated the presence of F. tularensis antigen in neutrophils and macrophages of these lesions and occurring extracellularly in areas of necrosis. This report demonstrates that immunohistochemical analysis is a rapid procedure that can be used to determine the pathogenesis of F. tularensis in rodent populations.