2020
DOI: 10.1007/s10875-020-00899-z
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Circulating Levels of Interleukin-6 and Interleukin-10, But Not Tumor Necrosis Factor-Alpha, as Potential Biomarkers of Severity and Mortality for COVID-19: Systematic Review with Meta-analysis

Abstract: Purpose Cytokine storm, an uncontrolled overproduction of inflammatory cytokines contributing to an aberrant systemic inflammatory response, is a major pathological feature of acute respiratory distress syndromes being severe manifestations of COVID-19, thus highlighting its potential as a biomarker and therapeutic target for COVID-19. We aimed to determine associations of circulating levels of inflammatory cytokines with severity and mortality of COVID-19 by systematic review and meta-analysis. … Show more

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Cited by 84 publications
(88 citation statements)
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References 43 publications
(91 reference statements)
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“…Another synthesis over three clinical studies determined the elevated ratio IL-6/IFN-γ in severe patients [ 17 ] with substantial heterogeneity (I 2 = 79%). A recent meta-analysis covering 6242 patients over 24 studies established elevated levels of IL-6 and IL-10 in severe COVID-19 patients with practically no reported heterogeneity for IL-10 [ 18 ].…”
Section: Introductionmentioning
confidence: 99%
“…Another synthesis over three clinical studies determined the elevated ratio IL-6/IFN-γ in severe patients [ 17 ] with substantial heterogeneity (I 2 = 79%). A recent meta-analysis covering 6242 patients over 24 studies established elevated levels of IL-6 and IL-10 in severe COVID-19 patients with practically no reported heterogeneity for IL-10 [ 18 ].…”
Section: Introductionmentioning
confidence: 99%
“…It is evident that augmented levels of IL-6 were observed in patients infected with SARS-CoV-2 and correlated with disease severity (Zhang, Peihua et al, 2020; Aziz et al, 2020 ; Mojtabavi et al, 2020 ; Ji et al, 2020 ; Udomsinprasert et al, 2020 ). Levels of IL-6 seem to be associated with inflammatory response, respiratory failure, needing for mechanical ventilation and/or intubation and mortality in COVID-19 patients ( Herold et al, 2020 ).…”
Section: Discussionmentioning
confidence: 99%
“…Antibody response seems to be essential in viral clearance. Likewise, in severely infected patients, IFN-γ production by CD4 + T cells is significantly lower than controls, 142,143,156,157 and the circulating B lymphocyte number is deficient. The decrease in TH1 and B cells impairs antibody production in these patients.…”
Section: De Sanctis Et Almentioning
confidence: 96%
“…141 Patients who eventually enter the intensive care unit (ICU) have significantly higher plasma levels of IL-6, and IL-10, non-necessarily TNFα and fewer circulating CD4 + and CD8 + T lymphocytes, NK, and B lymphocytes. [141][142][143][144] CD8 and NK cells exhaustion markers indicate progression and prognosis of the viral infection, [142][143][144] and IL-6 appears to be the | 9 of 18 DE SANCTIS ET Al crucial cytokine in the inflammatory process. 144 In animal studies, CS also impaired the development of adequate adaptive immunity against SARS-CoV infection.…”
Section: Inflammasomes and Cytokine Storm (Cs)mentioning
confidence: 99%