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Cerebral malaria in inbred mice. I. A new model and its pathology
Abstract:
Plasmodium berghei ANKA was tested for its usefulness as a model for cerebral malaria in inbred mouse strains A, A2G, A/J, C57L, SJL/J and SWR. A suitable model was obtained in A or A/J strain mice. Mortality was 100% after five to eight days with brain haemorrhages occurring terminally. The histopathology is described. The model was stable after six blood passages at 5- to 7-day intervals. Chloroquine abolished the haemorrhages and no intercurrent viral or blood protozoal infections were detected.
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.