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2017 | 14 | 90-96
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Clinical Manifestations of Plasmodium berghei ANKA Infection in Juvenile Mice: A Short Case Report

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Malaria is an important health and development challenge in Africa, Animal models most particularly mice, have long been employed to study malaria pathogenesis. This paper describes clinical manifestations due to Plasmodium berghei ANKA infection in juvenile mice as a model for understanding the complications of congenital malaria in neonates. Forty-five juvenile mice (5-7 days old) were acquired from University College Hospital, Ibadan and injected with 2×107 (0.2 ml) Plasmodium berghei ANKA parasitized red blood cells (PRBCs). The mice were then transported to the study site, kept in well-ventilated cages and fed daily with a balanced ration. Post-P. berghei infection, the mice were monitored daily for mortality. Clinical manifestations of experimental cerebral malaria (ECM) were assessed and confirmed if at least ruffled fur, hunching, wobbly gait, limb paralysis, convulsions, or coma was observed. Each sign was given a score of 1. Animals with scores ≥4 were considered to have severe ECM. In the experiment, 20 (44%) mice were lost due to natural cause (i.e. stress) at day 2. Between day 4 and 9, 25 (56%) of the study mice presented clinical signs of ECM. This included: ruffled fur – 25 (100%), hunching - 21 (84%), wobbly gait - 17 (68%), limb paralysis - 20 (80%), convulsions - 25 (100%). Survival rate and severity of ECM in the mice differs, 22 (88.0%) had severe ECM and 3 (12.0%) had mild ECM. This study has shown that parasite establishment and malaria complications can manifest as early as 4 days’ post P. berghei infection in 5-7 days old mice.
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  • Department of Pure and Applied Zoology, Federal University of Agriculture, Abeokuta, Nigeria
  • Department of Pure and Applied Zoology, Federal University of Agriculture, Abeokuta, Nigeria
  • Department of Microbiology, Ogun State Polytechnic, Igbesa, Nigeria
  • Department of Microbiology, Ogun State Polytechnic, Igbesa, Nigeria
  • Department of Pure and Applied Zoology, Federal University of Agriculture, Abeokuta, Nigeria
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