Publications by authors named "R A Damatta"
Description of an intramonocytic haemoparasite, sp. nov. (Apicomplexa: Adeleorina: Hepatozoidae), infecting lizard (Reptilia: Squamata: Teiidae) in northern Brazil.
Parasitology
April 2024
Haemogregarine (Apicomplexa: Adeleorina) parasites are considered to be the most common and widespread haemoparasites in reptiles. The genus (Apicomplexa: Adeleorina: Hepatozoidae) can be found parasitizing a broad range of species and, in reptiles, they infect mainly peripheral blood erythrocytes. The present study detected and characterized a haemogregarine isolated from the lizard species, , collected from the municipality of Capanema, Pará state, north Brazil.
View Article and Find Full Text PDFMalaria is caused by apicomplexan parasites of the genus. is an excellent animal model for the study of human malaria caused by . Merozoites invade erythrocytes but are also found in other host cells including macrophages from the spleen and liver.
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- Toxoplasma gondii is a global protozoan parasite that can cause congenital toxoplasmosis and acute outbreaks, particularly affecting regions like South America.
- A study using Bayesian quantitative risk assessment in Brazil revealed that oocysts in fruits and greens are a significantly higher source of infection compared to bradyzoites in meats.
- The analysis highlights critical uncertainties in food contamination data and emphasizes the need for further research to enhance risk assessments and inform policies to combat toxoplasmosis in Brazil.
Paratanaisia bragai is a digenetic trematode that reaches sexual maturity in the kidney collecting ducts of domestic and wild birds, while the snails Subulina octona and Leptinaria unilamellata serve as its intermediate hosts in Brazil. The present study analyzed the morphology and morphometry of P. bragai.
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- The study reports the creation and characterization of two new cobalt(II) coordination compounds, investigating their effects on Leishmania amazonensis, a parasite that causes leishmaniasis.
- Complex (1) showed no toxicity to mammalian cells and had moderate antiproliferative activity against the promastigote form of the parasite, while complex (2) was cytotoxic to mammalian cells but was also effective against the parasite.
- Mechanistic studies revealed that complex (1) induces mitochondrial dysfunction and apoptosis-like cell death in the parasites, with promising molecular docking results suggesting a potential interaction with crucial proteins, warranting further research.