Elevated plasma sTIM-3 levels in patients with severe COVID-19.
J Allergy Clin Immunol
; 147(1): 92-98, 2021 01.
Article
in English
| MEDLINE | ID: covidwho-779084
ABSTRACT
BACKGROUND:
The pathogenesis of coronavirus disease 2019 (COVID-19) is still incompletely understood, but it seems to involve immune activation and immune dysregulation.OBJECTIVE:
We examined the parameters of activation of different leukocyte subsets in COVID-19-infected patients in relation to disease severity.METHODS:
We analyzed plasma levels of myeloperoxidase (a marker of neutrophil activation), soluble (s) CD25 (sCD25) and soluble T-cell immunoglobulin mucin domain-3 (sTIM-3) (markers of T-cell activation and exhaustion), and sCD14 and sCD163 (markers of monocyte/macrophage activation) in 39 COVID-19-infected patients at hospital admission and 2 additional times during the first 10 days in relation to their need for intensive care unit (ICU) treatment.RESULTS:
Our major findings were as follows (1) severe clinical outcome (ICU treatment) was associated with high plasma levels of sTIM-3 and myeloperoxidase, suggesting activated and potentially exhausted T cells and activated neutrophils, respectively; (2) in contrast, sCD14 and sCD163 showed no association with need for ICU treatment; and (3) levels of sCD25, sTIM-3, and myeloperoxidase were inversely correlated with degree of respiratory failure, as assessed by the ratio of Pao2 to fraction of inspired oxygen, and were positively correlated with the cardiac marker N-terminal pro-B-type natriuretic peptide.CONCLUSION:
Our findings suggest that neutrophil activation and, in particular, activated T cells may play an important role in the pathogenesis of COVID-19 infection, suggesting that T-cell-targeted treatment options and downregulation of neutrophil activation could be of importance in this disorder.Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Hepatitis A Virus Cellular Receptor 2
/
SARS-CoV-2
/
COVID-19
Type of study:
Prognostic study
Topics:
Variants
Limits:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Language:
English
Journal:
J Allergy Clin Immunol
Year:
2021
Document Type:
Article
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