Granulocyte colony-stimulating factor treatment in chronic Chagas disease: preservation and improvement of cardiac...

Area of Science:

• Cardiology
• Immunology
• Parasitology

Background:

• Chagas disease causes heart failure, particularly in Latin America.
• Current treatments for Chagasic cardiomyopathy are limited, often requiring cardiac transplantation.
• Experimental models are crucial for developing new therapeutic strategies.

Purpose of the Study:

• To investigate the therapeutic effects of granulocyte colony-stimulating factor (G-CSF) on experimental chronic chagasic cardiomyopathy.
• To evaluate the impact of G-CSF on cardiac function, inflammation, fibrosis, and parasite load.

Main Methods:

• C57BL/6 mice were infected with Trypanosoma cruzi to induce chronic chagasic cardiomyopathy.
• Mice received either G-CSF or saline (control) treatment.
• Functional, immunological, and histopathological evaluations were performed post-treatment.

Main Results:

• G-CSF treatment reduced cardiac inflammation and fibrosis compared to controls.
• G-CSF did not alter parasite load but increased apoptotic inflammatory cells in the heart.
• Cardiac function improved or stabilized with G-CSF, while controls deteriorated.
• Exercise performance (treadmill distance, time, VO(2), VCO(2), RER) significantly improved in G-CSF treated mice.

Conclusions:

• G-CSF demonstrates beneficial effects on cardiac structure and function in experimental chagasic cardiomyopathy.
• G-CSF treatment correlates with improved whole-animal performance and cardiac health.
• G-CSF represents a promising therapeutic avenue for managing Chagas disease-related heart failure.