Objectives Extracellular histone levels are associated with the severity of many human pathologies, including sepsis and COVID-19. This study aimed to investigate the role of extracellular histones on monocyte distribution width (MDW), and their effect on the release of cytokines by blood cells.Methods Peripheral venous blood was collected from healthy subjects and treated with different doses of a histone mixture (range 0-200 mu g/mL) to analyze MDW modifications up-to 3 h and digital microscopy of blood smears. Plasma obtained after 3 h of histone treatment were assayed to evaluate a panel of 24 inflammatory cytokines.Results MDW values significantly increased in a time- and dose-dependent manner. These findings are associated with the histone-induced modifications of cell volume, cytoplasmic granularity, vacuolization, and nuclear structure of monocytes, promoting their heterogeneity without affecting their count. After 3 h of treatment almost all cytokines significantly increased in a dose-dependent manner. The most relevant response was shown by the significantly increased G-CSF levels, and by the increase of IL-1 beta, IL-6, MIP-1 beta, and IL-8 at the histone doses of 50, 100, and 200 mu g/mL. VEGF, IP-10, GM-CSF, TNF-alpha, Eotaxin, and IL-2 were also up-regulated, and a lower but significant increase was observed for IL-15, IL-5, IL-17, bFGF, IL-10, IFN-gamma, MCP-1, and IL-9.Conclusions Circulating histones critically induce functional alterations of monocytes mirrored by MDW, monocyte anisocytosis, and hyperinflammation/cytokine storm in sepsis and COVID-19. MDW and circulating histones may be useful tools to predict higher risks of worst outcomes.

Ligi, D., Lo Sasso, B., Della Franca, C., Giglio, R.V., Agnello, L., Ciaccio, M., et al. (2023). Monocyte distribution width alterations and cytokine storm are modulated by circulating histones. CLINICAL CHEMISTRY AND LABORATORY MEDICINE, 61(8), 1525-1535 [10.1515/cclm-2023-0093].

Monocyte distribution width alterations and cytokine storm are modulated by circulating histones

Lo Sasso, Bruna
Co-primo
;
Giglio, Rosaria Vincenza;Agnello, Luisa;Ciaccio, Marcello
Co-ultimo
;
2023-02-28

Abstract

Objectives Extracellular histone levels are associated with the severity of many human pathologies, including sepsis and COVID-19. This study aimed to investigate the role of extracellular histones on monocyte distribution width (MDW), and their effect on the release of cytokines by blood cells.Methods Peripheral venous blood was collected from healthy subjects and treated with different doses of a histone mixture (range 0-200 mu g/mL) to analyze MDW modifications up-to 3 h and digital microscopy of blood smears. Plasma obtained after 3 h of histone treatment were assayed to evaluate a panel of 24 inflammatory cytokines.Results MDW values significantly increased in a time- and dose-dependent manner. These findings are associated with the histone-induced modifications of cell volume, cytoplasmic granularity, vacuolization, and nuclear structure of monocytes, promoting their heterogeneity without affecting their count. After 3 h of treatment almost all cytokines significantly increased in a dose-dependent manner. The most relevant response was shown by the significantly increased G-CSF levels, and by the increase of IL-1 beta, IL-6, MIP-1 beta, and IL-8 at the histone doses of 50, 100, and 200 mu g/mL. VEGF, IP-10, GM-CSF, TNF-alpha, Eotaxin, and IL-2 were also up-regulated, and a lower but significant increase was observed for IL-15, IL-5, IL-17, bFGF, IL-10, IFN-gamma, MCP-1, and IL-9.Conclusions Circulating histones critically induce functional alterations of monocytes mirrored by MDW, monocyte anisocytosis, and hyperinflammation/cytokine storm in sepsis and COVID-19. MDW and circulating histones may be useful tools to predict higher risks of worst outcomes.
28-feb-2023
Ligi, D., Lo Sasso, B., Della Franca, C., Giglio, R.V., Agnello, L., Ciaccio, M., et al. (2023). Monocyte distribution width alterations and cytokine storm are modulated by circulating histones. CLINICAL CHEMISTRY AND LABORATORY MEDICINE, 61(8), 1525-1535 [10.1515/cclm-2023-0093].
File in questo prodotto:
File Dimensione Formato  
doi.org10.1515cclm-2023-0093.pdf

accesso aperto

Descrizione: articolo
Tipologia: Versione Editoriale
Dimensione 2.34 MB
Formato Adobe PDF
2.34 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/621326
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 4
social impact