Galectin-3 levels in patients with chronic constrictive pericarditis

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Abstract

Background: Galectin-3 (Gal-3) is a proinflammatory, profibrotic molecule implicated in the pathogenesis of heart failure. The role of Gal-3 in patients with chronic constrictive pericarditis (CCP) is not clear. Objective: The aim of this study was to assess plasma Gal-3 in patients with CCP and correlate it with clinical, functional and histologic parameters. Methods: We prospectively evaluated 25 symptomatic patients with CCP referred for pericardiectomy and 21 healthy controls. Patients underwent clinical assessment, Gal-3 and B-type natriuretic peptide (BNP) measurements, echocardiography, cardiac magnetic resonance imaging and cardiopulmonary exercise test (CPET) at baseline. Six months after pericardiectomy CPET was repeated. An alpha error < 5% was considered statistically significant, with a confidence interval of 95%. Results: Twenty-five patients with a median age of 45 years were included. Etiology was mainly idiopathic (n = 19, 76%); and 14 (56%) patients had NYHA functional class III/IV. Median BNP and Gal-3 were 143 (89-209) pg/dL and 14.8 (9.7-17.2) ng/mL, respectively. Gal-3 levels were not significantly higher in CCP patients than in control (p = 0.22). There were no significant correlations of Gal-3 with BNP, echocardiographic and cardiac magnetic resonance measures and histological findings. After pericardiectomy, it was found a statistically significant correlation between Gal-3 and the CPTE measures test duration (r = –0.79; p < 0.001) and exercise time (r = –0.79; p < 0.001). Conclusions: Patients with CCP had normal levels of Gal-3 as compared to the controls. Gal-3 did not correlate with morphological and functional measures before pericardiectomy. However, the associations between Gal-3 and exercise intolerance after pericardiectomy may suggest a role of Gal-3 in prognosis prediction after pericardiectomy.

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Fernandes, F., de Melo, D. T. P., Ramires, F. J. A., Sabino, E. C., Moreira, C. H. V., Benvenutti, L. A., … Mady, C. (2020). Galectin-3 levels in patients with chronic constrictive pericarditis. Arquivos Brasileiros de Cardiologia, 114(4), 683–689. https://doi.org/10.36660/abc.20190152

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