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Cerebral malaria in inbred mice. I. A new model and its pathology

Insights

Plasmodium berghei ANKA effectively models cerebral malaria in A/J mice, showing 100% mortality with brain hemorrhages. This stable model aids research into severe malaria pathogenesis and treatment.

Area of Science:

  • Parasitology
  • Infectious Diseases
  • Neurology

Background:

  • Cerebral malaria is a severe complication of Plasmodium falciparum infection.
  • Developing reliable animal models is crucial for understanding cerebral malaria pathogenesis and testing interventions.

Purpose of the Study:

  • To evaluate Plasmodium berghei ANKA as a model for cerebral malaria in various inbred mouse strains.
  • To characterize the pathological features and stability of the model.

Main Methods:

  • Infection of inbred mouse strains (A, A2G, A/J, C57L, SJL/J, SWR) with Plasmodium berghei ANKA.
  • Monitoring of parasitemia, mortality, and clinical signs.
  • Histopathological examination of brain tissue.
  • Serial blood passages to assess model stability.

Main Results:

  • A/J mice proved to be a suitable model, exhibiting 100% mortality within 5-8 days post-infection.
  • Terminal brain hemorrhages were observed, consistent with cerebral malaria pathology.
  • The model remained stable after six serial blood passages.
  • Chloroquine treatment successfully abolished hemorrhages, indicating efficacy against the parasite.

Conclusions:

  • Plasmodium berghei ANKA in A/J mice provides a robust and reproducible model for studying cerebral malaria.
  • The model facilitates investigation into the mechanisms of brain pathology and the evaluation of therapeutic strategies.

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