Thromb Haemost 2017; 117(10): 1970-1980
DOI: 10.1160/TH17-05-0314
Atherosclerosis and Ischaemic Disease
Schattauer GmbH

Erythrocyte-heme proteins and STEMI: implications in prognosis

Judit Cubedo
1  Cardiovascular Science Institute – ICCC, CiberCV and Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
,
Rosa Suades
1  Cardiovascular Science Institute – ICCC, CiberCV and Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
,
Teresa Padró
1  Cardiovascular Science Institute – ICCC, CiberCV and Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
,
Victoria Martin-Yuste
2  Department of Interventional Cardiology, Hospital Clinic, Barcelona, Spain
,
Manel Sabate-Tenas
2  Department of Interventional Cardiology, Hospital Clinic, Barcelona, Spain
,
Juan Cinca
3  Cardiology Department Santa Creu i Sant Pau Hospital and Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona
,
Jordi Sans-Roselló
3  Cardiology Department Santa Creu i Sant Pau Hospital and Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona
,
Alessandro Sionis
3  Cardiology Department Santa Creu i Sant Pau Hospital and Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona
,
Lina Badimon
1  Cardiovascular Science Institute – ICCC, CiberCV and Biomedical Research Institute Sant Pau (IIB-Sant Pau), Barcelona, Spain
4  Cardiovascular Research Chair UAB; Barcelona, Spain
› Institutsangaben
Financial support: This work was supported by grants from the Spanish Ministry of Economy and Competitiveness of Science [SAF2016–76819-R to L. B.]; Institute of Health Carlos III, ISCIII [TERCEL RD16/00110018 and CB16/11/0041 to L. B.; and FIS PI16/01915 to T. P.]; FEDER “Una Manera de Hacer Europa”; the Secretary of University and Research, Department of Economy and Knowledge of the Government of Catalonia [2014SGR1303 to L. B.]; and “CERCA Programme/Generalitat de Catalunya” Spain. We thank FIC-Fundacion Jesús Serra, Barcelona, Spain, for their continuous support.
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Publikationsverlauf

Received: 06. Mai 2017

Accepted after minor revision: 16. Juni 2017

Publikationsdatum:
28. November 2017 (online)

Summary

The role of erythrocytes in thrombus formation has been often neglected, but some studies have highlighted their active role in thrombotic events. Free-haemoglobin (Hb) has shown to induce oxidative-stress damage. Herein we have investigated the coordinated changes in heme-related proteins in patients with acute-coronary-syndromes (ACS), their association to ongoing thrombosis and their impact on patients’ prognosis. The serum proteome of STEMI-patients (N=27) within the first 6h after event-onset and 3d after were compared to controls (N=60). Changes in heme-metabolism were characterized in a second STEMI-group by a dual proteomic approach analyzing in-vivo aspirated coronary thrombi at PCI (N=24) and the associated peripheral-blood changes (N=10). A third STEMI-group (N=132) was studied to analyze the impact of the observed changes in prognosis at 6-months-follow-up. The haptoglobin/hemopexin(Hpg/Hpx)-scavenging-system revealed a time-dependent response after STEMI with an early increase in Hpg circulating levels in the acute phase (P=0.01) and a late increase in Hpx levels 3d after (P=0.045). Beta-Hb content in coronary thrombi was directly correlated with systemic beta-Hb and Hpg (R=0.804,P=0.0029; R=0.859,P=0.0007) levels. The presence of a fully-occlusive thrombus was associated to higher circulating levels of beta-Hb (P=0.03) and unbound-Hpg (P=0.03). ELISA validation demonstrated a decreased survival rate at 6-months follow-up in STEMI-patients with lower Hpg plasma levels at admission (P=0.027). Our results show active Hb-release form erythrocytes in ACS. This release is followed by a systemic early increase in Hpg levels and a late increase in Hpx levels that can co-ordinately help to prevent systemic pro-oxidative effects. The Hb-scavenging ability of haptoglobin is related to patients’ prognosis.

Supplementary Material to this article is available online at www.thrombosis-online.com.