Effect of Clindamycin on Acute and Chronic Toxoplasmosis in Mice

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Abstract
The effect of clindamycin on survival of mice during acute infection with the RH and C56 strains of Toxoplasma and the ability of this drug to prevent congenital transmission during the acute stage of the infection in the mother and to eradicate the parasite from tissues of mice chronically infected with the C56 strain were evaluated. The drug effectively prevented death due to the acute infection and, in the experimental model employed, eradicated the organism at least from the liver, spleen, and brain of approximately 30 to 50% of the acutely infected animals which survived. Clindamycin also effectively prevented congenital transmission during the acute infection in the mother. During short-term treatment (7 days), persistent parasitemia in the chronic infection was effectively diminished or eradicated. More prolonged treatment resulted in a significant clearing of the organisms from the spleens and livers, but not from the brains, of chronically infected mice.