Background: Platelet activation and oxidative stress seem to play a key role in coronary thrombus formation and are associated with thrombus burden in ST-elevation myocardial infarction (STEMI). However, the interplay between oxidative stress and platelet activation has not been fully elucidated. Materials and Methods: For 32 patients with STEMI undergoing primary percutaneous coronary intervention (PPCI) and 10 patients with stable angina (SA) and oxidative stress, as assessed by NADPH isoform 2 activity (soluble Nox2-derived peptide, sNox2-dp), levels of oxidized low-density lipoproteins (oxLDLs) and platelet activation markers such as soluble CD40 Ligand (sCD40L) and soluble P-selectin (sP-selectin) were measured in the retrieved material (coronary thrombi plus blood waste) of STEMI patients and in intracoronary blood of SA patients, respectively, and in peripheral blood samples of both groups. Results: In aspirated thrombi and blood waste of STEMI patients we found higher serum levels of sNox2-dp, oxLDLs, sCD40L, and sP-selectin, as compared to the intracoronary blood samples of SA patients. Moreover, in thrombi and blood waste of STEMI patients, a direct correlation between markers of oxidative stress and of platelet activation was found. Also, in STEMI patients a progressive increase of oxidative stress and platelet activation markers was observed according to the thrombus score burden. STEMI patients showed higher peripheral blood Nox2 activity and oxLDL levels as compared to SA patients. Conclusion: This study shows a close relationship between oxidative stress and platelet activation in the intracoronary blood waste and aspirated thrombi of STEMI patients, suggesting a role of oxidative stress in promoting thrombus formation and growth.

Interplay between oxidative stress and platelet activation in coronary thrombus of STEMI patients / Calvieri, Camilla; Tanzilli, Gaetano; Bartimoccia, Simona; Cangemi, Roberto; Arrivi, Alessio; Dominici, Marcello; Cammisotto, Vittoria; Viceconte, Nicola; Mangieri, Enrico; Frati, Giacomo; Violi, Francesco. - In: ANTIOXIDANTS. - ISSN 2076-3921. - 7:7(2018). [10.3390/antiox7070083]

Interplay between oxidative stress and platelet activation in coronary thrombus of STEMI patients

Calvieri, Camilla
Writing – Original Draft Preparation
;
Tanzilli, Gaetano
Conceptualization
;
Bartimoccia, Simona
Data Curation
;
Cangemi, Roberto
Formal Analysis
;
Arrivi, Alessio
Data Curation
;
Cammisotto, Vittoria
Formal Analysis
;
Viceconte, Nicola
Data Curation
;
Mangieri, Enrico
Supervision
;
Frati, Giacomo
Writing – Review & Editing
;
Violi, Francesco
Supervision
2018

Abstract

Background: Platelet activation and oxidative stress seem to play a key role in coronary thrombus formation and are associated with thrombus burden in ST-elevation myocardial infarction (STEMI). However, the interplay between oxidative stress and platelet activation has not been fully elucidated. Materials and Methods: For 32 patients with STEMI undergoing primary percutaneous coronary intervention (PPCI) and 10 patients with stable angina (SA) and oxidative stress, as assessed by NADPH isoform 2 activity (soluble Nox2-derived peptide, sNox2-dp), levels of oxidized low-density lipoproteins (oxLDLs) and platelet activation markers such as soluble CD40 Ligand (sCD40L) and soluble P-selectin (sP-selectin) were measured in the retrieved material (coronary thrombi plus blood waste) of STEMI patients and in intracoronary blood of SA patients, respectively, and in peripheral blood samples of both groups. Results: In aspirated thrombi and blood waste of STEMI patients we found higher serum levels of sNox2-dp, oxLDLs, sCD40L, and sP-selectin, as compared to the intracoronary blood samples of SA patients. Moreover, in thrombi and blood waste of STEMI patients, a direct correlation between markers of oxidative stress and of platelet activation was found. Also, in STEMI patients a progressive increase of oxidative stress and platelet activation markers was observed according to the thrombus score burden. STEMI patients showed higher peripheral blood Nox2 activity and oxLDL levels as compared to SA patients. Conclusion: This study shows a close relationship between oxidative stress and platelet activation in the intracoronary blood waste and aspirated thrombi of STEMI patients, suggesting a role of oxidative stress in promoting thrombus formation and growth.
2018
coronary thrombus; oxidative stress; platelet activation; stemi; thrombolysis in myocardial infarction (timi) thrombus score; physiology; biochemistry; molecular biology; clinical biochemistry; cell biology
01 Pubblicazione su rivista::01a Articolo in rivista
Interplay between oxidative stress and platelet activation in coronary thrombus of STEMI patients / Calvieri, Camilla; Tanzilli, Gaetano; Bartimoccia, Simona; Cangemi, Roberto; Arrivi, Alessio; Dominici, Marcello; Cammisotto, Vittoria; Viceconte, Nicola; Mangieri, Enrico; Frati, Giacomo; Violi, Francesco. - In: ANTIOXIDANTS. - ISSN 2076-3921. - 7:7(2018). [10.3390/antiox7070083]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1266542
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