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Determination of Toxoplasma gondii in several organs of cattle by carbon immunoassay (CIA) testing.
TLDR
In positive tissues the percentage of samples positive ranged from 10 to 50% which indicates the importance of cattle in the epidemiology of Toxoplasma in Costa Rica, and the findings in relation to the transmission of the parasite. Expand
[Susceptibility of Sigmodon hispidus (Rodentia: Cricetidae) to Toxoplasma gondii (Eucoccidia: Sarcocystidae)].
Sigmodon hispidus, a cotton rat, was inoculated with tachyzoites or oocysts of Costa Rican strains of Toxoplasma gondii to demonstrate the resistance to this parasite, as compared with mice, hamsterExpand
[Chemical and biological evaluation of the effect of plant extracts against Plasmodium berghei].
TLDR
Extracts from thirteen species of plants were evaluated by "in vivo" antimalarial test against plasmodium berghei effects and compounds identified include flavanoids, coumarins, mellilotic acid and iridoids which some kind of biodynamic activity has previously been reported. Expand
Age influence in the natural resistance of white rat and mice to the protozoan Toxoplasma gondii.
TLDR
There were important differences between both rodents regarding to Toxoplasma natural resistance, and most of the organs from mice presented characteristic T. gondii lesions, while in rats a normal tissues were observed. Expand
An in vivo model to study the anti-malaric capacity of plant extracts.
TLDR
An in vivo model to study the antimalaric effect of plant extracts is described and treated and non-treated animals differed in body weight, survival time, haematocrite, parasitemia development, and spleen or liver weight of recent dead or killed mice. Expand
[The immunosuppressant effect of T. lewisi (Kinetoplastidae) infection on the multiplication of Toxoplasma gondii (Sarcocystidae) on alveolar and peritoneal macrophages of the white rat].
TLDR
The immunity against T. gondii is similar between both phagocytes, but the time of infection and the compartment where the cells are located, makes the difference in the response time against the parasite. Expand
COSTA RICAN INTERNATIONAL COOPERATIVE BIODIVERSITY GROUP: USING INSECTS AND OTHER ARTHROPODS IN BIODIVERSITY PROSPECTING
TLDR
This documento es privado debido a limitaciones oficiales de derechos de autor. Expand
Effect of Trypanosoma lewisi infection on the Toxoplasma gondii multiplication in white rat peritoneal macrophages
TLDR
In this experimental model, Toxoplasma multiplication in PM was increased, as compared to macrophages treated with supernatant or serafrom control rats not infected with T. lewisi, in accordance with in vivo previous studies which demonstrated a clear immunosuppressive effect of T.gondii infection of the remarkablyresistant Wistar rats. Expand
Role of interferon - g on the immunosuppression during Toxoplasma gondii infection by Trypanosoma lewisi
TLDR
Evidence is given that a reduction of IFN-γ levels is one of the reasons for the immunosuppressive effect induced by T. lewisi, increasing T. gondii multiplication in an animal as the rat, which is remarkable resistant to this parasite. Expand
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