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Analysis of Iron Metabolism in Chronic Chagasic Cardiomyopathy

Carla Paixão Miranda1, Fernando Antônio Botoni1, Maria do Carmo Pereira Nunes2

  • 1Universidade Federal de Minas Gerais, Belo Horizonte, MG - Brazil.

Arquivos Brasileiros De Cardiologia
|February 21, 2019
PubMed

Insights

Iron metabolism markers are significantly altered in chronic chagasic cardiomyopathy (CCC). Lower iron levels and transferrin saturation in CCC patients indicate distinct iron kinetics compared to other heart conditions.

Area of Science:

  • Cardiology
  • Hematology
  • Infectious Diseases

Background:

  • Iron metabolism plays a crucial role in heart failure (HF) and serves as a prognostic marker.
  • Chagasic cardiomyopathy, a form of HF caused by Trypanosoma cruzi infection, may exhibit unique iron kinetics.
  • Understanding iron metabolism in Chagas disease is vital for managing cardiac complications.

Purpose of the Study:

  • To investigate the relationship between iron kinetics markers and the morbidity and etiology of chagasic cardiomyopathy.
  • To compare iron metabolism profiles in patients with Chronic Chagasic Cardiomyopathy (CCC), indeterminate Chagas disease (IND), and non-chagasic cardiomyopathy (NCh).

Main Methods:

  • Cross-sectional study comparing three groups: CCC (n=40), IND (n=40), and NCh (n=40).
  • Assessed iron (FeSe), transferrin saturation index (IST), total iron-binding capacity (CTLF), and ferritin levels.
  • Analyzed the association of iron markers and gender with ventricular dysfunction.

Main Results:

  • CCC patients exhibited significantly lower serum iron (FeSe), transferrin saturation (IST), and ferritin levels compared to IND and NCh groups.
  • Total iron-binding capacity (CTLF) was also lower in the CCC group.
  • Serum iron (FeSe), IST, and gender were independently associated with the degree of ventricular dysfunction in chagasic cardiomyopathy.

Conclusions:

  • Chronic Chagasic Cardiomyopathy is characterized by significant alterations in iron metabolism, including lower iron levels and transferrin saturation.
  • These iron kinetic changes in CCC are distinct from those observed in the indeterminate form of Chagas disease and other cardiomyopathies.
  • Iron metabolism markers and gender are important factors associated with cardiac dysfunction in Chagas disease.

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