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Updated: Jun 6, 2026
Quantitative 3D Imaging of Trypanosoma cruzi-Infected Cells, Dormant Amastigotes, and T Cells in Intact Clarified Organs
Published on: June 23, 2022
Histological approaches to study tissue parasitism during the experimental Trypanosoma cruzi infection
Daniela L Fabrino1, Grazielle A Ribeiro, Lívia Teixeira
1Laboratory of Cellular Biology, Department of Biology, ICB, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil. danifabrino@ufjf.edu.br
Insights
Histological methods help visualize and quantify Trypanosoma cruzi nests in heart tissue during acute Chagas' disease infection. These techniques aid in studying parasite colonization and inflammation in infected tissues.
Area of Science:
- Parasitology
- Pathology
- Histology
Background:
- Chagas' disease, caused by Trypanosoma cruzi, leads to significant tissue damage during acute infection.
- Intense tissue parasitism correlates with the severity of damage in the acute phase.
- The heart is a primary target organ for Trypanosoma cruzi infection.
Purpose of the Study:
- To present optimal histological approaches for visualizing Trypanosoma cruzi nests.
- To describe methods for quantifying parasite nests in cardiac tissue.
- To highlight the utility of these histological analyses in experimental models and clinical biopsies.
Main Methods:
- Histological techniques for tissue preparation and staining.
- Microscopic visualization of Trypanosoma cruzi nests.
- Quantitative analysis of parasite burden in infected tissues.
Main Results:
- Established histological methods allow for clear visualization of T. cruzi nests.
- Quantification of parasite nests provides a measure of infection intensity.
- These methods are effective for evaluating infection in the heart and other tissues.
Conclusions:
- Histological approaches are crucial for optimal visualization and quantification of T. cruzi.
- These analyses are valuable for understanding Chagas' disease pathogenesis in experimental models.
- The methods can be applied to study parasite colonization and inflammation in clinical samples.
Abstract:
During acute infection with the parasite Trypanosoma cruzi, the causal agent of Chagas' disease, tissue damage is related to intense tissue parasitism. Here we discuss histological approaches for an optimal visualization and quantification of T. cruzi nests in the heart, the main target organ of the parasite. These analyses are important to evaluate the course of the infection in different experimental models and also can be used to investigate parasite colonization and inflammatory processes in other infected tissues and biopsies.
