RT Journal Article T1 Circulating pyruvate is a potent prognostic marker for critical COVID-19 outcomes. A1 Ceperuelo-Mallafre, Victoria A1 Reverte, Laia A1 Peraire, Joaquim A1 Madeira, Ana A1 Maymo-Masip, Elsa A1 Lopez-Dupla, Miguel A1 Gutierrez-Valencia, Alicia A1 Ruiz-Mateos, Ezequiel A1 Buzon, Maria Jose A1 Jorba, Rosa A1 Vendrell, Joan A1 Auguet, Teresa A1 Olona, Montserrat A1 Vidal, Francesc A1 Rull, Anna A1 Fernandez-Veledo, Sonia K1 COVID-19 K1 energy-related metabolites K1 fluorometric quantification K1 pyruvate K1 semi-targeted metebolomics AB Coronavirus-19 (COVID-19) disease is driven by an unchecked immune response to the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) virus which alters host mitochondrial-associated mechanisms. Compromised mitochondrial health results in abnormal reprogramming of glucose metabolism, which can disrupt extracellular signalling. We hypothesized that examining mitochondrial energy-related signalling metabolites implicated in host immune response to SARS-CoV-2 infection would provide potential biomarkers for predicting the risk of severe COVID-19 illness. We used a semi-targeted serum metabolomics approach in 273 patients with different severity grades of COVID-19 recruited at the acute phase of the infection to determine the relative abundance of tricarboxylic acid (Krebs) cycle-related metabolites with known extracellular signaling properties (pyruvate, lactate, succinate and α-ketoglutarate). Abundance levels of energy-related metabolites were evaluated in a validation cohort (n=398) using quantitative fluorimetric assays. Increased levels of four energy-related metabolites (pyruvate, lactate, a-ketoglutarate and succinate) were found in critically ill COVID-19 patients using semi-targeted and targeted approaches (p Our findings support the link between COVID-19 pathogenesis and immunometabolic dysregulation, and show that fluorometric quantification of circulating pyruvate is a cost-effective clinical decision support tool to improve patient stratification and prognosis prediction. PB Frontiers Research Foundation YR 2022 FD 2022-09-14 LK http://hdl.handle.net/10668/20589 UL http://hdl.handle.net/10668/20589 LA en NO Ceperuelo-Mallafré V, Reverté L, Peraire J, Madeira A, Maymó-Masip E, López-Dupla M, et al. Circulating pyruvate is a potent prognostic marker for critical COVID-19 outcomes. Front Immunol. 2022 Sep 14;13:912579. DS RISalud RD Apr 12, 2025