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  • Title: Profiles of cardiovascular biomarkers according to severity stages of Chagas cardiomyopathy.
    Author: Echeverría LE, Rojas LZ, Calvo LS, Roa ZM, Rueda-Ochoa OL, Morillo CA, Muka T, Franco OH.
    Journal: Int J Cardiol; 2017 Jan 15; 227():577-582. PubMed ID: 27839809.
    Abstract:
    BACKGROUND/OBJECTIVES: Up 30 to 40% of Chagas patients exhibit cardiomyopathy with different degrees of cardiac involvement. Biomarkers may help in differentiation of the severity of Chagas cardiomyopathy (CCM). This study sought to examine the diagnostic value of a panel of biomarkers to distinguish the severity of (CCM). METHODS: 100 patients with CCM were included in this cross-sectional study. Based on electrocardiogram and echocardiogram, CCM patients were classified in three stages according to disease's severity. Levels of high-sensitivity cardiac troponin T (Hs-cTnT), N-terminal pro B-type natriuretic peptide (NT-proBNP), galectin-3 (Gal-3), neutrophil gelatinase-associated lipocalin (NGAL), soluble ST2 (sST2) and cystatin-c (Cys-c) were measured. Logistic regression models were used to assess the association between levels of natural log-transformed values of biomarkers and stages C/D versus B. We also calculated the area under curve (AUC) for each of the models. RESULTS: In models adjusted for age, sex, body mass index, kidney function and medication use, increased levels of NT-proBNP (per 1 unit natural log-transformed values, odds ratio (OR)=5.55; 95CI%:1.65-18.72) and Hs-cTnT (per 1 unit natural log-transformed values, OR=7.11; 95CI%:1.41-35.90) showed significant association with the severity of CCM per 1 unit increase of biomarkers. The accuracy of NT-proBNP and Hs-cTnT for diagnosis of the severity of CCM was high: AUC of 0.968 and 0.956 respectively. No significant difference was found in the AUC between NT-proBNP and Hs-cTnT. No association was found between Gal-3, NGAL, sST2 and Cys-C and severity of CCM. CONCLUSIONS: NT-proBNP and Hs-cTnT have both same diagnostic value in distinguishing severity of CCM.
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