Experimental intrauterine infection of adult BALB/c mice with Cryptosporidium sp.
Inoculation of adult, female BALB/c mice with 2 X 10(5) bleach-treated Cryptosporidium sp. oocysts isolated from calf feces resulted in infection of the uterine mucosa in more than 50% of the animals. Cryptosporidium sp. completed the entire life cycle in the uterus, and infectious oocysts were passed into the vagina. Two methods of application were used to establish intrauterine infection. The inoculum was either injected into the uterus after abdominal surgery or intracervically instilled. Mice were susceptible at all phases of the sexual cycle, but the highest infection rates were obtained during estrus and diestrus. Parasites were demonstrated as early as 5 days postinfection. Phagocytic cells in the uterine lumen and in the vagina contained Cryptosporidium sp. Phagocytosis may be an important immune response and a mechanism of parasitic clearance. These results suggest that Cryptosporidium sp. is a potential pathogen of the reproductive tract.[1]References
- Experimental intrauterine infection of adult BALB/c mice with Cryptosporidium sp. Liebler, E.M., Pohlenz, J.F., Woodmansee, D.B. Infect. Immun. (1986) [Pubmed]
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