Urine Neutrophil Elastase: A Novel Predictor of ICU Admission for Patients with COVID-19 Infection

Yu Song, Kai Zeng, Li-Kun Zhang, Jian-Nan Zhang, Kai-Li Zhang, Yu Xin, Xin-Ran Wang, Yu-Xin Zhou, Hong-Xu Li, Chang-Song Wang, Kai-Jiang Yu Key Laboratory of Critical Care Medicine of Heilongjiang Province; Department of Critical Care Medicine, The First Affiliated Hospital of Harbin Medical Univers...

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Main Authors: Song Y, Zeng K, Zhang LK, Zhang JN, Zhang KL, Xin Y, Wang XR, Zhou YX, Li HX, Wang CS, Yu KJ
Format: Article
Language:English
Published: Dove Medical Press 2025-04-01
Series:Journal of Inflammation Research
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Online Access:https://www.dovepress.com/urine-neutrophil-elastase-a-novel-predictor-of-icu-admission-for-patie-peer-reviewed-fulltext-article-JIR
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author Song Y
Zeng K
Zhang LK
Zhang JN
Zhang KL
Xin Y
Wang XR
Zhou YX
Li HX
Wang CS
Yu KJ
author_facet Song Y
Zeng K
Zhang LK
Zhang JN
Zhang KL
Xin Y
Wang XR
Zhou YX
Li HX
Wang CS
Yu KJ
author_sort Song Y
collection DOAJ
description Yu Song, Kai Zeng, Li-Kun Zhang, Jian-Nan Zhang, Kai-Li Zhang, Yu Xin, Xin-Ran Wang, Yu-Xin Zhou, Hong-Xu Li, Chang-Song Wang, Kai-Jiang Yu Key Laboratory of Critical Care Medicine of Heilongjiang Province; Department of Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, People’s Republic of ChinaCorrespondence: Chang-Song Wang, Email changsongwang@hrbmu.edu.cn Kai-Jiang Yu, Email drkaijiang@163.comIntroduction: We aimed to explore the differences of neutrophil elastase (NE) levels between intensive care unit (ICU) and non-ICU patients with COVID-19 infection, as well as its predictive value for COVID-19 progression.Methods: We enrolled the patients admitted with a primary diagnosis of COVID-19. All patients in ICU were diagnosed with the critical type upon admission. Blood was taken within 24 hours, followed by examination of the blood NE level and urine NE level. Other clinical features were recorded. A logistic regression model was used to predict ICU admission.Results: A total of 83 patients were diagnosed, including 52 non-ICU cases and 31 ICU cases. The ICU group showed significantly elevated levels of Neutrophil%, Cr, D-dimer (DD), Procalcitonin (PCT), and C-reactive protein (CRP). Meanwhile, the CD3-cell, T4-cell, and Lymphocyte% levels were lower in the ICU group. Notably, the blood NE levels were similar between groups, whereas the urine NE level was highly significantly higher in the ICU group vs the non-ICU group. After dimension reduction, we constructed a logistic model (UD) using only two factors: the urine NE level and the blood DD level. The overall accuracy of was 86.1%. The urine NE has a strong efficacy in ICU prediction (AUC = 0.893), and the performance of the UD model was even better (AUC = 0.933).Conclusion: Urine NE level is a useful predictor of COVID-19 progression, particularly in patients requiring ICU care. Urine NE has a significantly positive correlation with neutrophil%, DD, and PCT, as well as a negative correlation with lymphocyte levels.Keywords: COVID-19, neutrophil elastase, intensive care unit, urine, acute respiratory distress syndrome, ARDS
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publishDate 2025-04-01
publisher Dove Medical Press
record_format Article
series Journal of Inflammation Research
spelling doaj-art-a8182b799a974248b3bc2232ac9cf4862025-08-20T02:20:25ZengDove Medical PressJournal of Inflammation Research1178-70312025-04-01Volume 1855455553102383Urine Neutrophil Elastase: A Novel Predictor of ICU Admission for Patients with COVID-19 InfectionSong YZeng KZhang LKZhang JNZhang KLXin YWang XRZhou YXLi HXWang CSYu KJYu Song, Kai Zeng, Li-Kun Zhang, Jian-Nan Zhang, Kai-Li Zhang, Yu Xin, Xin-Ran Wang, Yu-Xin Zhou, Hong-Xu Li, Chang-Song Wang, Kai-Jiang Yu Key Laboratory of Critical Care Medicine of Heilongjiang Province; Department of Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, People’s Republic of ChinaCorrespondence: Chang-Song Wang, Email changsongwang@hrbmu.edu.cn Kai-Jiang Yu, Email drkaijiang@163.comIntroduction: We aimed to explore the differences of neutrophil elastase (NE) levels between intensive care unit (ICU) and non-ICU patients with COVID-19 infection, as well as its predictive value for COVID-19 progression.Methods: We enrolled the patients admitted with a primary diagnosis of COVID-19. All patients in ICU were diagnosed with the critical type upon admission. Blood was taken within 24 hours, followed by examination of the blood NE level and urine NE level. Other clinical features were recorded. A logistic regression model was used to predict ICU admission.Results: A total of 83 patients were diagnosed, including 52 non-ICU cases and 31 ICU cases. The ICU group showed significantly elevated levels of Neutrophil%, Cr, D-dimer (DD), Procalcitonin (PCT), and C-reactive protein (CRP). Meanwhile, the CD3-cell, T4-cell, and Lymphocyte% levels were lower in the ICU group. Notably, the blood NE levels were similar between groups, whereas the urine NE level was highly significantly higher in the ICU group vs the non-ICU group. After dimension reduction, we constructed a logistic model (UD) using only two factors: the urine NE level and the blood DD level. The overall accuracy of was 86.1%. The urine NE has a strong efficacy in ICU prediction (AUC = 0.893), and the performance of the UD model was even better (AUC = 0.933).Conclusion: Urine NE level is a useful predictor of COVID-19 progression, particularly in patients requiring ICU care. Urine NE has a significantly positive correlation with neutrophil%, DD, and PCT, as well as a negative correlation with lymphocyte levels.Keywords: COVID-19, neutrophil elastase, intensive care unit, urine, acute respiratory distress syndrome, ARDShttps://www.dovepress.com/urine-neutrophil-elastase-a-novel-predictor-of-icu-admission-for-patie-peer-reviewed-fulltext-article-JIRcovid-19neutrophil elastaseintensive care uniturined-dimer
spellingShingle Song Y
Zeng K
Zhang LK
Zhang JN
Zhang KL
Xin Y
Wang XR
Zhou YX
Li HX
Wang CS
Yu KJ
Urine Neutrophil Elastase: A Novel Predictor of ICU Admission for Patients with COVID-19 Infection
Journal of Inflammation Research
covid-19
neutrophil elastase
intensive care unit
urine
d-dimer
title Urine Neutrophil Elastase: A Novel Predictor of ICU Admission for Patients with COVID-19 Infection
title_full Urine Neutrophil Elastase: A Novel Predictor of ICU Admission for Patients with COVID-19 Infection
title_fullStr Urine Neutrophil Elastase: A Novel Predictor of ICU Admission for Patients with COVID-19 Infection
title_full_unstemmed Urine Neutrophil Elastase: A Novel Predictor of ICU Admission for Patients with COVID-19 Infection
title_short Urine Neutrophil Elastase: A Novel Predictor of ICU Admission for Patients with COVID-19 Infection
title_sort urine neutrophil elastase a novel predictor of icu admission for patients with covid 19 infection
topic covid-19
neutrophil elastase
intensive care unit
urine
d-dimer
url https://www.dovepress.com/urine-neutrophil-elastase-a-novel-predictor-of-icu-admission-for-patie-peer-reviewed-fulltext-article-JIR
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