Related Experiment Video
Updated: Nov 5, 2025

Sexual Transmission of American Trypanosomes from Males and Females to Naive Mates
Published on: January 27, 2019
Updated review on the pathophysiology of Chagas cardiomyopathy
Alfredo Geovanny Pech-Aguilar1, Ana Paulina Haro-Álvarez2, Miguel Enrique Rosado-Vallado2
1Universidad Autónoma de Yucatán, Campus de Ciencias de la Salud, Facultad de Medicina.
Insights
Chagas disease causes heart damage through multiple mechanisms beyond the parasite itself. Understanding these complex pathways is key to treating chronic Chagasic cardiomyopathy.
Area of Science:
- Cardiology
- Infectious Diseases
- Immunology
Background:
- Chagas disease, caused by Trypanosoma cruzi, has complex mechanisms of cardiac damage.
- Myocardial injury was initially attributed solely to the parasite.
Purpose of the Study:
- To review and discuss the physiopathological mechanisms of cardiac damage in Trypanosoma cruzi infection.
- To explore the multifactorial nature of Chagas heart disease.
Main Methods:
- Literature review of current research on Chagas disease pathophysiology.
- Synthesis of information on immune-inflammatory, autoimmune, microvascular, and neural mechanisms.
Main Results:
- Trypanosoma cruzi initiates cardiac damage during the acute phase.
- Interrelated mechanisms including immune response, autoimmunity, microvascular issues, and nerve damage contribute to chronic cardiomyopathy.
- These factors lead to progressive cardiac function deterioration.
Conclusions:
- Cardiac damage in Chagas disease is multifactorial.
- Understanding these complex pathways is crucial for managing Chronic Chagasic Cardiomyopathy.
Abstract:
More than 110 years after Chagas disease discovery, some aspects of the mechanisms involved in the physiopathology of heart damage are still unknown. Previously, Trypanosoma cruzi was considered to be the only cause of myocardial injury. Currently, there are other known mechanisms involved in the physiopathology of Chagas heart disease, including the immune-inflammatory response, autoimmunity, microvascular abnormalities and nerve damage, which are interrelated and contribute to cardiac damage. Nowadays, the parasite is the main cause of cardiac damage during the acute stage of Chagas disease and the one that initiates the complex physiopathological network that triggers the other mentioned mechanisms. The consequence of these pathophysiological mechanisms is progressive deterioration of cardiac function that ultimately establishes Chronic Chagasic cardiomyopathy. The aim of this review is to describe and discuss the main physiopathological mechanisms that are currently being postulated with respect to cardiac damage in T. cruzi infection.
Related Concept Videos
Cardiomyopathy I: Introduction and Classification
Cardiomyopathy II: Dilated Cardiomyopathy
Pathophysiology of Cardiac Performance
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Heart Failure II: Pathophysiology
Myocarditis I: Introduction

