Interleukin 8 Released After Acute Myocardial Infarction is Mainly Bound to Erythrocytes
Overview
Affiliations
Objective: To determine whether rapid clearance of interleukin 8 (IL-8) from plasma through binding to the erythrocyte chemokine receptor may be responsible for failure to detect IL-8 consistently after acute myocardial infarction.
Design: Plasma concentrations of IL-8 were measured at frequent intervals in 43 consecutive patients. In 21 of these, erythrocyte bound IL-8 concentrations were also measured. The influence of infarct size, type of treatment, and the presence of early successful reperfusion on IL-8 release was assessed.
Results: Peak IL-8 concentrations in plasma were raised in 31 of the 43 patients (68%). Median plasma IL-8 concentrations were 16.0 pg/ml (range 2.4 to 225.0 pg/ml) six hours after the onset of chest pain. Twelve hours after the onset of symptoms, plasma IL-8 concentrations had already returned to normal in 27 patients. In contrast, in 18 of 21 patients (86%), erythrocyte bound IL-8 concentrations were raised at between 6 and 30 hours, with a median peak value of 59.8 pg/ml (range 19 to 148 pg/ml). No correlation between peak creatine kinase MB and peak IL-8 (plasma or erythrocyte bound) was observed. There was a significant difference in peak plasma IL-8 concentrations between patients who underwent direct PTCA (19.4 pg/ml) and those who received conservative treatment (9.9 pg/ml; p = 0.0206), but no correlation with the presence of early successful reperfusion.
Conclusions: IL-8 is released in plasma after acute myocardial infarction and subsequently binds to red blood cells, resulting in only a transient rise of plasma IL-8 and a more prolonged increase of erythrocyte bound IL-8.
Pan X, Koberle M, Ghashghaeinia M Antioxidants (Basel). 2024; 13(8).
PMID: 39199214 PMC: 11352176. DOI: 10.3390/antiox13080968.
Pham Q, Bui T, Sim W, Lim K, Law C, Tan W Cardiovasc Res. 2024; 120(14):1737-1751.
PMID: 38850165 PMC: 11587561. DOI: 10.1093/cvr/cvae128.
Interferon-β decreases LPS-induced neutrophil recruitment to cardiac fibroblasts.
Anfossi R, Vivar R, Ayala P, Gonzalez-Herrera F, Espinoza-Perez C, Osorio J Front Cell Dev Biol. 2023; 11:1122408.
PMID: 37799272 PMC: 10547890. DOI: 10.3389/fcell.2023.1122408.
Ghashghaeinia M, Mrowietz U Cell Cycle. 2021; 20(20):2091-2101.
PMID: 34559024 PMC: 8565816. DOI: 10.1080/15384101.2021.1972557.
Bohm E, Pavlaki M, Chalikias G, Mikroulis D, Georgiadis G, Tziakas D TH Open. 2021; 5(2):e113-e124.
PMID: 33870075 PMC: 8046517. DOI: 10.1055/s-0041-1725042.