RT Journal Article T1 Hypercytokinemia in COVID-19: Tear cytokine profile in hospitalized COVID-19 patients A1 Burgos Blasco, Bárbara A1 Güemes Villahoz, Noemi A1 Santiago García, José Antonio A1 Santiago, José Luis A1 Fernández Vigo, José Ignacio A1 Espino Paisán, Laura A1 Sarriá Ruiz, Beatriz Irene A1 García Feijoo, Julián A1 Martínez De La Casa Fernández-Borrella, José María AB The aim of this study is to analyze the concentrations of cytokines in tear of hospitalized COVID-19 patients compared to healthy controls. Tear samples were obtained from 41 healthy controls and 62 COVID-19 patients. Twenty-seven cytokines were assessed: interleukin (IL)-1b, IL-1RA, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL9, IL-10, IL-12, IL-13, IL-15, IL-17, eotaxin, fibroblast growth factor basic, granulocyte colony-stimulating factor (G-CSF), granulocyte-monocyte colony-stimulating factor (GM-CSF), interferon (IFN)-γ, interferon gamma-induced protein, monocyte chemo-attractant protein-1, macrophage inflammatory protein (MIP)-1a, MIP-1b, platelet-derived growth factor (PDGF), regulated on activation normal T cell expressed and secreted, tumor necrosis factor-α and vascular endothelial growth factor (VEGF).
In tear samples of COVID-19 patients, an increase in IL-9, IL-15, G-CSF, GM-CSF, IFN-γ, PDGF and VEGF was observed, along with a decrease in eotaxin compared to the control group (p < 0.05). A poor correlation between IL-6 levels in tear and blood was found. IL-1RA and GM-CSF were significantly lower in severe patients and those who needed treatment targeting the immune system (p < 0.05). Tear cytokine levels corroborate the inflammatory nature of SARS-CoV-2. PB Elsevier SN 0014-4835 YR 2020 FD 2020 LK https://hdl.handle.net/20.500.14352/6672 UL https://hdl.handle.net/20.500.14352/6672 LA eng NO Burgos Blasco, B., Güemes Villahoz, N., Santiago García, J. A. et al. «Hypercytokinemia in COVID-19: Tear Cytokine Profile in Hospitalized COVID-19 Patients». Experimental Eye Research, vol. 200, noviembre de 2020, p. 108253. DOI.org (Crossref), https://doi.org/10.1016/j.exer.2020.108253. DS Docta Complutense RD 19 dic 2025