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Infection ; 49(4): 757-762, 2021 Aug.
Article in English | MEDLINE | ID: covidwho-1171404

ABSTRACT

Coronavirus disease 2019 (COVID-19) is caused by infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Type I interferons are important in the defense of viral infections. Recently, neutralizing IgG auto-antibodies against type I interferons were found in patients with severe COVID-19 infection. Here, we analyzed expression of CD169/SIGLEC1, a well described downstream molecule in interferon signaling, and found increased monocytic CD169/SIGLEC1 expression levels in patients with mild, acute COVID-19, compared to patients with severe disease. We recommend further clinical studies to evaluate the value of CD169/SIGLEC1 expression in patients with COVID-19 with or without auto-antibodies against type I interferons.


Subject(s)
COVID-19/immunology , Monocytes/immunology , SARS-CoV-2/physiology , Sialic Acid Binding Ig-like Lectin 1/blood , Aged , Female , Hospitalization , Humans , Longitudinal Studies , Male , Middle Aged , Retrospective Studies , Severity of Illness Index , Sialic Acid Binding Ig-like Lectin 1/biosynthesis , Up-Regulation
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