RESUMEN
The Cambodian I strain of Plasmodium falciparum, originally from Kampuchea was adapted for development in three different types of Aotus monkeys. High-level parasitemias were readily produced in splenectomized Colombian A. trivirgatus griseimembra monkeys. Initially, only minimal parasitemias developed in A. t. trivirgatus monkeys from Colombia. However, in one animal, adaptation occurred and high-level parasitemias were obtained during the second recrudescence of the infection. Passage to other A. t. trivirgatus monkeys indicated that the parasite was well adapted for development in splenectomized animals; low to moderate parasitemias were still produced in intact animals. This line of the parasite produced high level parasitemias when inoculated into splenectomized Aotus monkeys from Peru. Infections in Anopheles freeborni mosquitoes were obtained as late as the 7th passage in A. t. griseimembra monkeys and as late as the 7th recrudescence of the infection in an individual monkey (348 days after inoculation). The sporogonic cycle was completed in An. freeborni mosquitoes, and one transmission to an A. t. griseimembra monkey via the bites of infected mosquitoes was obtained.
Asunto(s)
Malaria/parasitología , Plasmodium falciparum/aislamiento & purificación , Animales , Anopheles/parasitología , Aotus trivirgatus , Cambodia , Colombia , Humanos , Insectos Vectores , Malaria/transmisión , Panamá , Perú , EsplenectomíaRESUMEN
Anopheles freeborni mosquitoes with oocyst infections had salivary gland infections at a higher rate of Plasmodium vivax from the New World than with strains from Asia, particularly those from South Vietnam. Anopheles maculatus mosquitoes supported development from oocysts to heavily infected salivary glands for all the strains of P. vivax tested. The results suggest that P. vivax introduced from Vietnam would be less likely to be transmitted by native A. freeborni mosiquitoes than would malaria from some other areas.