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[Endothelial function and high-sensitivity C-reactive protein levels in patients with Chagas disease living in a

Ana García-Álvarez1, Marta Sitges, Magda Heras

  • 1Instituto Clínico del Tórax, Hospital Clínic, IDIBAPS-Institut d'Investigacions Biomèdiques August Pi i Sunyer, Universidad de Barcelona, Barcelona, España.

Revista Espanola De Cardiologia
|August 2, 2011
PubMed

Insights

Chagas cardiomyopathy patients showed reduced nitroglycerin-mediated vasodilation, indicating vascular smooth muscle dysfunction. Elevated C-reactive protein suggests inflammation in early Chagas disease stages.

Area of Science:

  • Cardiovascular Medicine
  • Infectious Diseases
  • Clinical Physiology

Context:

  • Chagas disease is increasingly prevalent in nonendemic areas like Spain.
  • Endothelial dysfunction and chronic inflammation are implicated in Chagas heart disease pathogenesis.
  • Previous clinical data on these mechanisms have been conflicting.

Purpose:

  • To evaluate endothelial function in patients with indeterminate Chagas disease and chronic Chagas cardiomyopathy.
  • To measure systemic levels of nitric oxide and high-sensitivity C-reactive protein (hs-CRP) in these patient groups.
  • To compare these markers between patients and healthy controls in a nonendemic setting.

Summary:

  • Reduced nitroglycerin-mediated vasodilation was observed in chronic Chagas cardiomyopathy patients, suggesting vascular smooth muscle cell dysfunction.
  • No significant differences in flow-mediated vasodilation or nitric oxide levels were found, though a trend towards lower FMD was noted.
  • Significantly higher hs-CRP levels were detected in both indeterminate and chronic Chagas cardiomyopathy patients compared to controls.

Impact:

  • Findings suggest impaired vascular smooth muscle function in chronic Chagas cardiomyopathy.
  • Elevated hs-CRP in early Chagas disease stages may indicate an ongoing inflammatory response or early cardiovascular involvement.
  • This research provides insights into the pathophysiology of Chagas heart disease in nonendemic populations.
Abstract

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