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Infect Immun. Aug 1991; 59(8): 2529–2534.
PMCID: PMC258051

Role of host cellular response in differential susceptibility of nonimmunized BALB/c mice to Plasmodium berghei and Plasmodium yoelii sporozoites.


We found BALB/c mice to be on the order of 2,000 times more susceptible to Plasmodium yoelii than Plasmodium berghei sporozoites, as measured by the ability of these sporozoites to differentiate into microscopically detectable hepatic schizonts in the livers of immunologically naive mice. One of the factors that determine the relative insusceptibility of mice to P. berghei sporozoites is the innate cellular inflammatory response that the mice mount after injection with sporozoites. The cellular inflammatory response against P. berghei is initiated soon after sporozoite injection; by 24 h, substantial histopathological changes have developed within the liver. There is considerably less of a cellular inflammatory response against P. yoelii; significant histopathological changes within the liver are not observed until well after hepatic schizonts have begun to rupture at around 44 h postinjection of sporozoites. These differences in the cellular inflammatory response against two different, closely related species of sporozoites are of considerable interest. The data strongly suggest that the BALB/c-P. berghei sporozoite system is a relatively poor biological model for sporozoite immunization studies.

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Selected References

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Articles from Infection and Immunity are provided here courtesy of American Society for Microbiology (ASM)


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