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Deprecated: Implicit conversion from float 269.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Cell+Rep+Med 2021 ; 2 (7): 100329 Nephropedia Template TP
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Serological analysis reveals an imbalanced IgG subclass composition associated with COVID-19 disease severity #MMPMID34151306
Yates JL; Ehrbar DJ; Hunt DT; Girardin RC; Dupuis AP 2nd; Payne AF; Sowizral M; Varney S; Kulas KE; Demarest VL; Howard KM; Carson K; Hales M; Ejemel M; Li Q; Wang Y; Peredo-Wende R; Ramani A; Singh G; Strle K; Mantis NJ; McDonough KA; Lee WT
Cell Rep Med 2021[Jul]; 2 (7): 100329 PMID34151306show ga
Coronavirus disease 2019 (COVID-19) is associated with a wide spectrum of disease presentation, ranging from asymptomatic infection to acute respiratory distress syndrome (ARDS). Paradoxically, a direct relationship has been suggested between COVID-19 disease severity and the levels of circulating severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific antibodies, including virus-neutralizing titers. A serological analysis of 536 convalescent healthcare workers reveals that SARS-CoV-2-specific and virus-neutralizing antibody levels are elevated in individuals that experience severe disease. The severity-associated increase in SARS-CoV-2-specific antibody is dominated by immunoglobulin G (IgG), with an IgG subclass ratio skewed toward elevated receptor binding domain (RBD)- and S1-specific IgG3. In addition, individuals that experience severe disease show elevated SARS-CoV-2-specific antibody binding to the inflammatory receptor Fc?RIIIa. Based on these correlational studies, we propose that spike-specific IgG subclass utilization may contribute to COVID-19 disease severity through potent Fc-mediated effector functions. These results may have significant implications for SARS-CoV-2 vaccine design and convalescent plasma therapy.