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Protective effect of lactoferricin against Toxoplasma gondii infection in mice

, : Protective effect of lactoferricin against Toxoplasma gondii infection in mice. Journal of Veterinary Medical Science 60(2): 241-244

The protective effect of lactoferricin against Toxoplasma gondii infection was examined in experimental murine toxoplasmosis. All mice orally administered 5.0 mg of lactoferricin, and challenged with cysts of T. gondii at a dose of LD90 survived until the end of experiment (35 days post challenge). Intraperitoneal administration of 0.1 mg of lactoferricin also prevented death in 100% of treated mice challenged with T. gondii cysts. In contrast, 80 % of untreated mice died of acute toxoplasmosis within 14 days post challenge. In the mice treated perorally with lactoferricin, the number of cysts in the brain was significantly lower than that in untreated mice. Levels of interferon-r in the serum of infected mice treated perorally with lactoferricin showed a tendency to lower than those in the infected mice without treatment. These results demonstrate that oral administration of lactoferricin induces resistance to T. gondii infection in mice.


PMID: 9524950

DOI: 10.1292/jvms.60.241

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