RT Journal Article SR Electronic T1 High-dose intravenous immunoglobulins might modulate inflammation in COVID-19 patients JF Life Science Alliance JO Life Sci. Alliance FD Life Science Alliance LLC SP e202001009 DO 10.26508/lsa.202001009 VO 4 IS 9 A1 Rodríguez de la Concepción, María Luisa A1 Ainsua-Enrich, Erola A1 Reynaga, Esteban A1 Ávila-Nieto, Carlos A1 Santos, Jose Ramón A1 Roure, Silvia A1 Mateu, Lourdes A1 Paredes, Roger A1 Puig, Jordi A1 Jimenez, Juan Manuel A1 Izquierdo-Useros, Nuria A1 Clotet, Bonaventura A1 Pedro-Botet, María Luisa A1 Carrillo, Jorge YR 2021 UL http://www.life-science-alliance.org/content/4/9/e202001009.abstract AB The use of high-dose of intravenous immunoglobulins (IVIGs) as immunomodulators for the treatment of COVID-19–affected individuals has shown promising results. IVIG reduced inflammation in these patients, who progressively restored respiratory function. However, little is known about how they may modulate immune responses in COVID-19 individuals. Here, we have analyzed the levels of 41 inflammatory biomarkers in plasma samples obtained at day 0 (pretreatment initiation), 3, 7, and 14 from five hospitalized COVID-19 patients treated with a 5-d course of 400 mg/kg/d of IVIG. The plasmatic levels of several cytokines (Tumor Necrosis Factor, IL-10, IL-5, and IL-7), chemokines (macrophage inflammatory protein-1α), growth/tissue repairing factors (hepatic growth factor), complement activation (C5a), and intestinal damage such as Fatty acid–binding protein 2 and LPS-binding protein showed a progressive decreasing trend during the next 2 wk after treatment initiation. This trend was not observed in IVIG-untreated COVID-19 patients. Thus, the administration of high-dose IVIG to hospitalized COVID-19 patients may improve their clinical evolution by modulating their hyperinflammatory and immunosuppressive status.