Ontology highlight
ABSTRACT: Background
Immune dysregulation is a major factor in the development of severe coronavirus disease 2019 (COVID-19). The homeostatic chemokines CCL19 and CCL21 have been implicated as mediators of tissue inflammation, but data on their regulation in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is limited. We thus investigated the levels of these chemokines in COVID-19 patients.Methods
Serial blood samples were obtained from patients hospitalized with COVID-19 (n = 414). Circulating CCL19 and CCL21 levels during hospitalization and 3-month follow-up were analyzed. In vitro assays and analysis of RNAseq data from public repositories were performed to further explore possible regulatory mechanisms.Results
A consistent increase in circulating levels of CCL19 and CCL21 was observed, with high levels correlating with disease severity measures, including respiratory failure, need for intensive care, and 60-day all-cause mortality. High levels of CCL21 at admission were associated with persisting impairment of pulmonary function at the 3-month follow-up.Conclusions
Our findings highlight CCL19 and CCL21 as markers of immune dysregulation in COVID-19. This may reflect aberrant regulation triggered by tissue inflammation, as observed in other chronic inflammatory and autoimmune conditions. Determination of the source and regulation of these chemokines and their effects on lung tissue is warranted to further clarify their role in COVID-19.Clinical trials registration
NCT04321616 and NCT04381819.
SUBMITTER: Tveita A
PROVIDER: S-EPMC9384496 | biostudies-literature | 2022 Dec
REPOSITORIES: biostudies-literature
Tveita Anders A Murphy Sarah Louise SL Holter Jan Cato JC Kildal Anders Benjamin AB Michelsen Annika E AE Lerum Tøri Vigeland TV Kaarbø Mari M Heggelund Lars L Holten Aleksander Rygh AR Finbråten Ane-Kristine AK Müller Karl Erik KE Mathiessen Alexander A Bøe Simen S Fevang Børre B Granerud Beathe Kiland BK Tonby Kristian K Lind Andreas A Dudman Susanne Gjeruldsen SG Henriksen Katerina Nezvalova KN Müller Fredrik F Skjønsberg Ole Henning OH Trøseid Marius M Barratt-Due Andreas A Dyrhol-Riise Anne Ma AM Aukrust Pål P Halvorsen Bente B Dahl Tuva Børresdatter TB Ueland Thor T
The Journal of infectious diseases 20221201 12
<h4>Background</h4>Immune dysregulation is a major factor in the development of severe coronavirus disease 2019 (COVID-19). The homeostatic chemokines CCL19 and CCL21 have been implicated as mediators of tissue inflammation, but data on their regulation in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is limited. We thus investigated the levels of these chemokines in COVID-19 patients.<h4>Methods</h4>Serial blood samples were obtained from patients hospitalized with COVI ...[more]