Author: Henry, B. M.; Benoit, S.; Vikse, J.; Berger, B.; Pulvino, C.; Hoehn, J.; Rose, J.; Oliveira, M. H. S. d.; Lippi, G.; Benoit, J.
Title: Functional immunoparalysis characterized by elevated Interleukin-10 and Interleukin-10-to-Lymphocyte Count Ratio is associated with severe disease and poor outcomes in coronavirus disease 2019 (COVID-19) Cord-id: 0v3j5oob Document date: 2020_9_29
ID: 0v3j5oob
Snippet: Objectives: Severe coronavirus disease 2019 (COVID-19) is associated with a dysregulated immune state, called cytokine storm. While research has focused on the hyperinflammation, little research has been performed on the compensatory anti-inflammatory response which if severe may lead to a state of functional immunoparalysis. The aim of this study was to evaluate the anti-inflammatory response to COVID-19, by assessing interleukin-10 (IL-10) and IL-10/lymphocyte count ratio and their association
Document: Objectives: Severe coronavirus disease 2019 (COVID-19) is associated with a dysregulated immune state, called cytokine storm. While research has focused on the hyperinflammation, little research has been performed on the compensatory anti-inflammatory response which if severe may lead to a state of functional immunoparalysis. The aim of this study was to evaluate the anti-inflammatory response to COVID-19, by assessing interleukin-10 (IL-10) and IL-10/lymphocyte count ratio and their association with patient outcomes. Methods: Adult patients presenting to the emergency department (ED) with laboratory-confirmed COVID-19 were recruited. The primary endpoint was peak COVID-19 severity within 30 days of index ED visit. Additional endpoints included COVID-19 severity at ED disposition, development of severe acute kidney injury (AKI) or secondary bacterial infections. Results: A total of 52 COVID-19 patients were enrolled. IL-10 and IL-10/lymphocyte count were significantly higher in patients with severe disease at both time points (all p<0.05), as well as in those who developed severe AKI and secondary bacterial infection (all p[≤]0.01). In multivariable analysis, a one-unit increase in IL-10 was associated with 42% increased odds of severe COVID-19 (p=0.031), whilst a one-unit increase IL-10/lymphocyte ratio was also associated with 32% increase in odds of severe COVID-19 (p=0.013). Conclusions: The hyperinflammatory response to COVID-19 is accompanied by a simultaneous anti-inflammatory response, which is associated with poor outcomes and may increase the risk of secondary bacterial infections. IL-10 and IL-10/lymphocyte ratio at ED presentation were independent predictors of COVID-19 severity. Functional immunoparalysis in COVID-19 requires further investigation to enable more precise immunomodulatory therapy against SARS-CoV-2.
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