PMID- 21767674 OWN - NLM STAT- MEDLINE DCOM- 20120322 LR - 20160518 IS - 1876-7737 (Electronic) IS - 1874-3919 (Linking) VI - 75 IP - 1 DP - 2011 Dec 10 TI - Proteomic analysis of plasma samples from patients with acute myocardial infarction identifies haptoglobin as a potential prognostic biomarker. PG - 229-36 LID - 10.1016/j.jprot.2011.06.028 [doi] AB - Prognosis of clinical outcome following myocardial infarction is variable and difficult to predict. We have analyzed the plasma proteome of thirty patients with acute myocardial infarction to search for new prognostic biomarkers. Proteomic analyses of blood samples were performed by 2-D-DiGE after plasma depletion of albumin and immunoglobulins G. New York Heart Association (NYHA) class determined at 1-year follow-up was used to identify patients with heart failure. Principal component analysis and hierarchical clustering of proteomic data revealed that patients could be separated into 3 groups. The 22 differentially expressed proteins involved in this grouping were identified as haptoglobin (Hp) and respective isoforms. The 3 groups of patients had distinct Hp isoforms: patients from group 1 had the alpha1-alpha1, patients from group 2 the alpha2-alpha1, and patients from group 3 the alpha2-alpha2 genotype. This classification was also associated with different total plasma levels of Hp. The presence of the alpha2 genotype and low plasma levels of Hp was associated with a higher NYHA class and therefore with a detrimental functional outcome after myocardial infarction. A plasma level of Hp below 1.4g/L predicted the occurrence of heart failure (NYHA 2, 3, 4) at 1-year with 100% sensitivity. CI - Copyright (c) 2011 Elsevier B.V. All rights reserved. FAU - Haas, Benjamin AU - Haas B AD - Laboratory of Cardiovascular Research, Centre de Recherche Public-Sante, Luxembourg, Luxembourg. FAU - Serchi, Tommaso AU - Serchi T FAU - Wagner, Daniel R AU - Wagner DR FAU - Gilson, Georges AU - Gilson G FAU - Planchon, Sebastien AU - Planchon S FAU - Renaut, Jenny AU - Renaut J FAU - Hoffmann, Lucien AU - Hoffmann L FAU - Bohn, Torsten AU - Bohn T FAU - Devaux, Yvan AU - Devaux Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110713 PL - Netherlands TA - J Proteomics JT - Journal of proteomics JID - 101475056 RN - 0 (Biomarkers) RN - 0 (Haptoglobins) RN - 0 (Protein Isoforms) SB - IM MH - Acute Disease MH - Biomarkers/*analysis/blood MH - Haptoglobins/*analysis/genetics/metabolism MH - Heart Failure/metabolism/pathology MH - Humans MH - Male MH - Middle Aged MH - Myocardial Infarction/metabolism/*pathology MH - Prognosis MH - Protein Isoforms/analysis/genetics/metabolism MH - Proteomics/*methods EDAT- 2011/07/20 06:00 MHDA- 2012/03/23 06:00 CRDT- 2011/07/20 06:00 PHST- 2011/03/24 00:00 [received] PHST- 2011/06/09 00:00 [revised] PHST- 2011/06/27 00:00 [accepted] PHST- 2011/07/20 06:00 [entrez] PHST- 2011/07/20 06:00 [pubmed] PHST- 2012/03/23 06:00 [medline] AID - S1874-3919(11)00285-5 [pii] AID - 10.1016/j.jprot.2011.06.028 [doi] PST - ppublish SO - J Proteomics. 2011 Dec 10;75(1):229-36. doi: 10.1016/j.jprot.2011.06.028. Epub 2011 Jul 13.