Longitudinal clinical and radiographic evaluation reveals interleukin-6 as an indicator of persistent pulmonary injury in COVID-19

: Previous studies of coronavirus disease 2019 (COVID-19) were mainly focused on cross-sectional analysis. In this study, we sought to evaluate the dynamic changes of immunological and radiographic features, and the association with the outcome of pulmonary lesions in COVID-19 patients. : Peripheral...

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Veröffentlicht in:International journal of medical sciences 2021, Vol.18 (1), p.29-41
Hauptverfasser: Liao, Baolin, Liu, Zhipeng, Tang, Libo, Li, Linghua, Gan, Qingxin, Shi, Haiyan, Jiao, Qian, Guan, Yujuan, Xie, Min, He, Xi, Zhao, Han, Chen, Weilie, Liu, Yanxia, Li, Liya, Wang, Yaping, Cao, Yi, Shi, Yaling, Li, Yongyin, Lei, Chunliang
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container_issue 1
container_start_page 29
container_title International journal of medical sciences
container_volume 18
creator Liao, Baolin
Liu, Zhipeng
Tang, Libo
Li, Linghua
Gan, Qingxin
Shi, Haiyan
Jiao, Qian
Guan, Yujuan
Xie, Min
He, Xi
Zhao, Han
Chen, Weilie
Liu, Yanxia
Li, Liya
Wang, Yaping
Cao, Yi
Shi, Yaling
Li, Yongyin
Lei, Chunliang
description : Previous studies of coronavirus disease 2019 (COVID-19) were mainly focused on cross-sectional analysis. In this study, we sought to evaluate the dynamic changes of immunological and radiographic features, and the association with the outcome of pulmonary lesions in COVID-19 patients. : Peripheral blood samples and radiographic data were collected longitudinally for up to 8 weeks from 158 laboratory-confirmed COVID-19 patients. The chest computed tomography (CT) scans were scored based on a semi-quantification assessment according to the extent of pulmonary abnormalities; the temporal change of the immunological and radiographic features was analyzed. Compared with mild and moderate patients, severe patients had significantly decreased counts of lymphocytes, CD4 T cells, CD8 T cells, and CD19 B cells but dramatically elevated counts of neutrophils and levels of interleukin (IL)-6. Sequential monitoring showed a sustained increase in lymphocytes counts and significantly decreased levels of IL-6 in severe patients during the disease course. Notably, patients with persistent pulmonary lesions (CT score ≥ 5 in week 8) showed high levels of IL-6 during the follow-up period, compared with those with recovery lesions (CT score < 5 in week 8). More importantly, the peak expression of IL-6 prior to the aggravated lung injury was mainly found in patients with persistent lesions, and multivariate analysis showed that IL-6 level upon admission was an independent factor associated with the persistent pulmonary injury. Prolonged elevation of IL-6 is associated with persistent pulmonary lesions in COVID-19 patients. Sequential monitoring and timely intervention of IL-6 may favor the clinical management of COVID-19.
doi_str_mv 10.7150/ijms.49728
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In this study, we sought to evaluate the dynamic changes of immunological and radiographic features, and the association with the outcome of pulmonary lesions in COVID-19 patients. : Peripheral blood samples and radiographic data were collected longitudinally for up to 8 weeks from 158 laboratory-confirmed COVID-19 patients. The chest computed tomography (CT) scans were scored based on a semi-quantification assessment according to the extent of pulmonary abnormalities; the temporal change of the immunological and radiographic features was analyzed. Compared with mild and moderate patients, severe patients had significantly decreased counts of lymphocytes, CD4 T cells, CD8 T cells, and CD19 B cells but dramatically elevated counts of neutrophils and levels of interleukin (IL)-6. Sequential monitoring showed a sustained increase in lymphocytes counts and significantly decreased levels of IL-6 in severe patients during the disease course. Notably, patients with persistent pulmonary lesions (CT score ≥ 5 in week 8) showed high levels of IL-6 during the follow-up period, compared with those with recovery lesions (CT score &lt; 5 in week 8). More importantly, the peak expression of IL-6 prior to the aggravated lung injury was mainly found in patients with persistent lesions, and multivariate analysis showed that IL-6 level upon admission was an independent factor associated with the persistent pulmonary injury. Prolonged elevation of IL-6 is associated with persistent pulmonary lesions in COVID-19 patients. Sequential monitoring and timely intervention of IL-6 may favor the clinical management of COVID-19.</description><identifier>ISSN: 1449-1907</identifier><identifier>EISSN: 1449-1907</identifier><identifier>DOI: 10.7150/ijms.49728</identifier><identifier>PMID: 33390771</identifier><language>eng</language><publisher>Australia: Ivyspring International Publisher Pty Ltd</publisher><subject>Acids ; Adolescent ; Adult ; Aged ; Aged, 80 and over ; Biomarkers - blood ; Coronaviruses ; COVID-19 ; COVID-19 - blood ; COVID-19 - complications ; COVID-19 - diagnostic imaging ; COVID-19 - immunology ; Cytokines ; Female ; Flow cytometry ; Humans ; Immunology ; Infections ; Influenza ; Interleukin-6 - blood ; Longitudinal Studies ; Lung Injury - blood ; Lung Injury - diagnostic imaging ; Lung Injury - virology ; Lymphocyte Count ; Male ; Middle Aged ; Pneumonia ; Radiography, Thoracic ; Research Paper ; Retrospective Studies ; SARS-CoV-2 ; Severe acute respiratory syndrome coronavirus 2 ; Statistical analysis ; Tomography, X-Ray Computed ; Viral infections ; Young Adult</subject><ispartof>International journal of medical sciences, 2021, Vol.18 (1), p.29-41</ispartof><rights>The author(s).</rights><rights>2021. 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In this study, we sought to evaluate the dynamic changes of immunological and radiographic features, and the association with the outcome of pulmonary lesions in COVID-19 patients. : Peripheral blood samples and radiographic data were collected longitudinally for up to 8 weeks from 158 laboratory-confirmed COVID-19 patients. The chest computed tomography (CT) scans were scored based on a semi-quantification assessment according to the extent of pulmonary abnormalities; the temporal change of the immunological and radiographic features was analyzed. Compared with mild and moderate patients, severe patients had significantly decreased counts of lymphocytes, CD4 T cells, CD8 T cells, and CD19 B cells but dramatically elevated counts of neutrophils and levels of interleukin (IL)-6. Sequential monitoring showed a sustained increase in lymphocytes counts and significantly decreased levels of IL-6 in severe patients during the disease course. 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In this study, we sought to evaluate the dynamic changes of immunological and radiographic features, and the association with the outcome of pulmonary lesions in COVID-19 patients. : Peripheral blood samples and radiographic data were collected longitudinally for up to 8 weeks from 158 laboratory-confirmed COVID-19 patients. The chest computed tomography (CT) scans were scored based on a semi-quantification assessment according to the extent of pulmonary abnormalities; the temporal change of the immunological and radiographic features was analyzed. Compared with mild and moderate patients, severe patients had significantly decreased counts of lymphocytes, CD4 T cells, CD8 T cells, and CD19 B cells but dramatically elevated counts of neutrophils and levels of interleukin (IL)-6. Sequential monitoring showed a sustained increase in lymphocytes counts and significantly decreased levels of IL-6 in severe patients during the disease course. 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subjects Acids
Adolescent
Adult
Aged
Aged, 80 and over
Biomarkers - blood
Coronaviruses
COVID-19
COVID-19 - blood
COVID-19 - complications
COVID-19 - diagnostic imaging
COVID-19 - immunology
Cytokines
Female
Flow cytometry
Humans
Immunology
Infections
Influenza
Interleukin-6 - blood
Longitudinal Studies
Lung Injury - blood
Lung Injury - diagnostic imaging
Lung Injury - virology
Lymphocyte Count
Male
Middle Aged
Pneumonia
Radiography, Thoracic
Research Paper
Retrospective Studies
SARS-CoV-2
Severe acute respiratory syndrome coronavirus 2
Statistical analysis
Tomography, X-Ray Computed
Viral infections
Young Adult
title Longitudinal clinical and radiographic evaluation reveals interleukin-6 as an indicator of persistent pulmonary injury in COVID-19
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