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THE COEXISTENCE OF PROTOZOAN-LIKE PARASITES AND MENINGOENCEPHALITIS IN MICE

E V Cowdry1, F M Nicholson

  • 1Laboratories of The Rockefeller Institute for Medical Research.

The Journal of Experimental Medicine
|October 30, 2009
PubMed

Insights

An obscure meningoencephalitic disease in mice, marked by lesions and parasites, resembles a similar condition in rabbits. Further research is needed to determine if one or two related parasite species cause these symptoms.

Area of Science:

  • Veterinary Pathology
  • Parasitology
  • Neuroscience

Background:

  • A subset of laboratory mice exhibit subclinical meningoencephalitis.
  • This condition is characterized by significant brain lesions and protozoan-like parasites.
  • Similarities exist between these findings in mice and previously reported cases in rabbits.

Purpose of the Study:

  • To investigate an obscure meningoencephalitic disease in apparently healthy laboratory mice.
  • To compare the observed lesions and parasites with those found in rabbits.
  • To explore the potential etiology of the disease.

Main Methods:

  • Histopathological examination of brain tissue from affected mice.
  • Microscopic identification and characterization of protozoan-like parasites.
  • Comparative analysis of findings in mice and rabbits.

Main Results:

  • Meningoencephalitic lesions were identified in a small proportion of mice.
  • Protozoan-like parasites were observed within the lesions.
  • The lesions and parasites in mice showed strong resemblance to those reported in rabbits.

Conclusions:

  • The findings suggest a potential shared etiology between the disease in mice and rabbits.
  • It is hypothesized that a single parasite species or two closely related, indistinguishable species may be responsible.
  • Further experimental studies are required to confirm the causative agent and its transmission.

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