Document Detail

N-terminal Pro brain natriuretic peptide is a reliable biomarker of reduced myocardial contractility in patients with lamin A/C gene mutations.
MedLine Citation:
PMID:  20627339     Owner:  NLM     Status:  In-Data-Review    
BACKGROUND: Recently, concerns have been raised about a possible lack of sensitivity of biomarkers to detect left ventricular (LV) dysfunction in patients with myopathies. We examined the ability of the N-terminal brain natriuretic peptide (NT-proBNP) to detect LV or right ventricular (RV) dysfunction in patients with lamin A/C (LMNA) gene mutations.
METHODS: We prospectively measured plasma NT-proBNP in consecutive patients with documented LMNA mutations and age-sex matched controls. All patients underwent standard echocardiography implemented by pulsed tissue-Doppler echocardiography (TDE).
RESULTS: Twenty-three patients were included (10 males, mean age 39.2±18.9years);10 had previous atrial arrhythmias, 8 had been implanted with cardioverter defibrillator for primary prevention of sudden death, 5 patients were of NYHA class II and 18 of NHYA class I. Sinus rhythm was recorded in all. NT-proBNP was increased in LMNA patients versus controls (123±229 versus 26±78pg/ml, p=0.0004); 7 patients had depressed LV and/or RV contractility. Patients with reduced LV or RV contractility had increased mean NT-proBNP (341±1032pg/ml versus 80±79pg/ml in patients with normal myocardial contractility, p=0.004). Receiver-operating-characteristics analysis shows that NT-proBNP reliably detected depressed contractility (area under the curve 0.889 [0.697-1.000]). Sensitivity and specificity were 88% and 83% respectively, applying manufacturer's recommended cut-off concentration of 125pg/ml.
CONCLUSION: NT-proBNP reliably detected the presence of reduced LV/RV contractility in LMNA patients.
Christophe Meune; Karim Wahbi; Camille Gobeaux; Denis Duboc; Françoise Pecker; Gisèle Bonne
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Publication Detail:
Type:  Journal Article     Date:  2010-07-23
Journal Detail:
Title:  International journal of cardiology     Volume:  151     ISSN:  1874-1754     ISO Abbreviation:  Int. J. Cardiol.     Publication Date:  2011 Sep 
Date Detail:
Created Date:  2011-09-05     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8200291     Medline TA:  Int J Cardiol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  160-3     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier Ireland Ltd. All rights reserved.
Université Paris Descartes, Département de Cardiologie, Hôpital Cochin, AP-HP, Paris, France.
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