• Neurol Neurochir Pol · Jan 2014

    Comparative Study

    The N-terminal pro-brain natriuretic peptide as a marker of mitoxantrone-induced cardiotoxicity in multiple sclerosis patients.

    • Aleksandra Podlecka-Piętowska, Janusz Kochanowski, Beata Zakrzewska-Pniewska, Grzegorz Opolski, Hubert Kwieciński, and Anna Maria Kamińska.
    • Department of Neurology, Warsaw Medical University, Warsaw, Poland. Electronic address: apodlecka@wum.edu.pl.
    • Neurol Neurochir Pol. 2014 Jan 1;48(2):111-5.

    Background And PurposeMitoxantrone (MTX) has been shown to reduce progression of disability and number of clinical exacerbations in patients with progressive multiple sclerosis (MS). Prolonged administration of MTX, however, is limited by the risk of cardiotoxicity. Cardiac monitoring in MTX-treated patients includes usually measurement of left ventricular ejection fraction (LVEF) by means of echocardiography. The N-terminal pro-brain natriuretic peptide (NT-proBNP) represents a novel diagnostic tool in the assessment of heart failure. This study was aimed to evaluate the usefulness of NT-proBNP for early detection of MTX-induced cardiotoxicity in MS patients.Materials And MethodsWe measured the NT-proBNP plasma levels in 45 MS patients who completed 24-month MTX therapy and in 37 MS patients of control group.ResultsThe median NT-proBNP plasma value was 15.12pg/mL. In 12 MTX-treated patients (27%), NT-proBNP plasma values were elevated, though this subgroup of patients neither clinical showed evidence of myocardial damage nor had the LVEF value <50%. In five patients with normal NT-proBNP, we observed LVEF decline >10%. We did not observe correlations between the NT-proBNP levels and patient age, MS duration, relapses index, Extended Disability Status Scale (EDSS), MTX single dose and the total cumulative dose of MTX. In 8 patients (22%) from control group, NT-proBNP plasma levels were also elevated.ConclusionsThe results of our study confirm that MTX therapy is safe for carefully selected and closely monitored MS patients. We believe that serial evaluation of NT-proBNP levels (before, during and after MTX therapy) can identify MS patients at high risk for MTX-induced cardiotoxicity.Copyright © 2014 Polish Neurological Society. Published by Elsevier Urban & Partner Sp. z o.o. All rights reserved.

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