PMID- 35777794 OWN - NLM STAT- MEDLINE DCOM- 20220706 LR - 20220720 IS - 1550-8080 (Electronic) IS - 0091-7370 (Linking) VI - 52 IP - 3 DP - 2022 May TI - High Circulating Levels of Neutrophil Extracellular Traps Parameters Predicting Poor Outcome in COVID-19. PG - 374-381 AB - OBJECTIVE: Exploration of biomarkers to predict the severity of COVID-19 is important to reduce mortality. Upon COVID-19 infection, neutrophil extracellular traps (NET) are formed, which leads to a cytokine storm and host damage. Hence, the extent of NET formation may reflect disease progression and predict mortality in COVID-19. METHODS: We measured 4 NET parameters - cell-free double stranded DNA (cell-free dsDNA), neutrophil elastase, citrullinated histone H3 (Cit-H3), and histone - DNA complex - in 188 COVID-19 patients and 20 healthy controls. Survivors (n=166) were hospitalized with or without oxygen supplementation, while non-survivors (n=22) expired during in-hospital treatment. RESULTS: Cell-free dsDNA was significantly elevated in non-survivors in comparison with survivors and controls. The survival rate of patients with high levels of cell-free dsDNA, neutrophil elastase, and Cit-H3 was significantly lower than that of patients with low levels. These three markers significantly correlated with inflammatory markers (absolute neutrophil count and C-reactive protein). CONCLUSION: Since the increase in NET parameters indicates the unfavourable course of COVID-19 infection, patients predisposed to poor outcome can be rapidly managed through risk stratification by using these NET parameters. CI - (c) 2022 by the Association of Clinical Scientists, Inc. FAU - Kim, Seunghwan AU - Kim S AD - Department of Laboratory Medicine, Seoul National University College of Medicine. FAU - Hong, Ki Ho AU - Hong KH AD - Department of Laboratory Medicine, Yonsei University College of Medicine. FAU - Gu, Ja-Yoon AU - Gu JY AD - Department of Laboratory Medicine, Seoul National University College of Medicine. AD - Cancer Research Institute, Seoul National University College of Medicine. FAU - In, Ji Won AU - In JW AD - Department of Laboratory Medicine, Seoul Medical Center. FAU - Ahn, Mi Young AU - Ahn MY AD - Department of Internal Medicine, Seoul Medical Center, Seoul, Korea. FAU - Kim, Hyun Kyung AU - Kim HK AD - Department of Laboratory Medicine, Seoul National University College of Medicine lukekhk@snu.ac.kr. AD - Cancer Research Institute, Seoul National University College of Medicine. LA - eng PT - Journal Article PL - United States TA - Ann Clin Lab Sci JT - Annals of clinical and laboratory science JID - 0410247 RN - 0 (Biomarkers) RN - 0 (Cell-Free Nucleic Acids) RN - 0 (Histones) RN - EC 3.4.21.37 (Leukocyte Elastase) SB - IM MH - Biomarkers/metabolism MH - *COVID-19/diagnosis MH - Cell-Free Nucleic Acids/blood/metabolism MH - *Extracellular Traps/metabolism MH - Histones/blood/metabolism MH - Humans MH - Leukocyte Elastase/blood/metabolism MH - Neutrophils/metabolism MH - Prognosis OTO - NOTNLM OT - Cell-free DNA OT - Citrullinated histone H3 OT - Histone-DNA complex OT - Neutrophil elastase OT - Neutrophil extracellular trap EDAT- 2022/07/02 06:00 MHDA- 2022/07/07 06:00 CRDT- 2022/07/01 20:43 PHST- 2022/07/01 20:43 [entrez] PHST- 2022/07/02 06:00 [pubmed] PHST- 2022/07/07 06:00 [medline] AID - 52/3/374 [pii] PST - ppublish SO - Ann Clin Lab Sci. 2022 May;52(3):374-381.