Prevalence of autoantibodies against autonomic receptors in patients with chronic cardiopathies

Azael Saldaña, José E. Calzada, Juan Garisto, Salomón Zebedes, Franklyn E. Samudio, Roberto Blandón, Óscar Avilés, .

Keywords: Chagas disease, Chagas cardiomyopathy, autoantibodies, receptors, adrenergic, beta, muscarinic, Panamá

Abstract

Introduction. Chagas´ disease is the main cause of chronic myocardiopathy in Central America. The mechanisms proposed for this cardiac pathology during the chronic phase remain controversial. Several studies have detected the presence of circulating autoantibodies against β-adrenergic and cholinergic muscarinic receptors of the myocardium in patients with Chagas disease. These autoantibodies can trigger intracellular signals and modify the cardiac function during the progression of the disease.
Objectives. The serological frequency of these autoantibodies was compared among patients with chronic Chagas disease, patients with other cardiopathies and healthy controls.
Materials and methods. The prevalence of autoantibodies against β-adrenergic and cholinergic muscarinic receptors was determined in four groups of Panamenian patients: 53 chagasic patients, 25 serologically negative patients with cardiac insufficiency, 25 patients with cardiac arrhythmia and 25 healthy individuals.
Results. The antibodies against autonomic receptors were more frequently observed in patients with chronic chagasic cardiomyopathy (24.5%) compared to the cardiac insufficiency group (20.0%) and the cardiac arrhythmia group (16.0%). The proportion of autoantibodies was significantly different between the groups with chronic chagasic cardiomyopathy and healthy controls (24.5% versus 0%; p=0.015). Of the 53 chronically infected chagasic patients, 48 (90%) showed some degree of cardiac dysfunction.
Conclusions. The frequency of autoantibodies against autonomic receptors is significantly increased in patients with chronic Chagas disease and in patients with other cardiopathies.

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  • Azael Saldaña Instituto Conmemorativo Gorgas de Estudios de la Salud, Ciudad de Panamá, Panamá
  • José E. Calzada Instituto Conmemorativo Gorgas de Estudios de la Salud, Ciudad de Panamá, Panamá
  • Juan Garisto Hospital Santo Tomás, Ciudad de Panamá, Panamá
  • Salomón Zebedes Hospital Santo Tomás, Ciudad de Panamá, Panamá
  • Franklyn E. Samudio Instituto Conmemorativo Gorgas de Estudios de la Salud, Ciudad de Panamá, Panamá
  • Roberto Blandón Hospital Santo Tomás, Ciudad de Panamá, Panamá
  • Óscar Avilés Hospital Santo Tomás, Ciudad de Panamá, Panamá

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How to Cite
1.
Saldaña A, Calzada JE, Garisto J, Zebedes S, Samudio FE, Blandón R, et al. Prevalence of autoantibodies against autonomic receptors in patients with chronic cardiopathies. biomedica [Internet]. 2009 Mar. 1 [cited 2024 May 16];29(1):133-9. Available from: https://revistabiomedica.org/index.php/biomedica/article/view/49

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