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Liu Z, Xiong Y, Min J, Zhu Y. Dexmedetomidine improves lung injury after one-lung ventilation in esophageal cancer patients by inhibiting inflammatory response and oxidative stress. Toxicol Res (Camb) 2024; 13:tfae041. [PMID: 38617713 PMCID: PMC11007265 DOI: 10.1093/toxres/tfae041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 02/16/2024] [Accepted: 02/26/2024] [Indexed: 04/16/2024] Open
Abstract
Aim To explore the effect of Dexmedetomidine (DEX) on lung injury in patients undergoing One-lung ventilation (OLV). Methods Esophageal cancer patients undergoing general anesthesia with OLV were randomly divided into the DEX group and control group, with 30 cases in each group. Mean arterial pressure (MAP), heart rate (HR), arterial partial pressure of oxygen (PO2), and arterial partial pressure of nitrogen dioxide (PCO2) were recorded at the time points after anesthesia induction and before OLV (T1), OLV 30 min (T2), OLV 60 min (T3), OLV 120 min (T4), OLV end before (T5) and before leaving the room (T6) in both groups. Reverse Transcription-Polymerase Chain Reaction (RT-qPCR) was applied to detect the levels of CC16 mRNA. Enzyme-linked immunosorbent assay (ELISA) was used to detect serum CC16 protein levels. The content of malondialdehyde (MDA) in serum was determined by thio barbituric acid (TBA) method. ELISA was used to measure the concentrations of TNF-α (tumor necrosis factor-alpha)/and IL-6 (interleukin 6). Results DEX treatment slowed down HR at time points T1-T6 and increased PO2 and PCO2 at time points T2-T5 compared with the control group. Moreover, at time points T2-T6, DEX treatment reduced the levels of club cell secretory protein-16 (CC16) mRNA and serum CC16 protein levels. Furthermore, DEX treatment caused the reduction of MDA, TNF-α and IL-6 concentrations in serum of patients. Conclusion During the OLV process, DEX could reduce serum CC16 protein levels, inhibit inflammatory reactions and oxidative stress, and improve oxygenation index, indicating a protective effect on lung injury during OLV.
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Affiliation(s)
- Zhen Liu
- Department of Anesthesiology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, No. 17, Yongwai Zheng Street, Donghu District, Nanchang, Jiangxi Province 330006, P.R. China
| | - Yingfen Xiong
- Department of Anesthesiology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, No. 17, Yongwai Zheng Street, Donghu District, Nanchang, Jiangxi Province 330006, P.R. China
| | - Jia Min
- Department of Anesthesiology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, No. 17, Yongwai Zheng Street, Donghu District, Nanchang, Jiangxi Province 330006, P.R. China
| | - Yunsheng Zhu
- Department of Anesthesiology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, No. 17, Yongwai Zheng Street, Donghu District, Nanchang, Jiangxi Province 330006, P.R. China
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Zhang H, Mulqueen RM, Iannuzo N, Farrera DO, Polverino F, Galligan JJ, Ledford JG, Adey AC, Cusanovich DA. txci-ATAC-seq: a massive-scale single-cell technique to profile chromatin accessibility. Genome Biol 2024; 25:78. [PMID: 38519979 PMCID: PMC10958877 DOI: 10.1186/s13059-023-03150-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 12/20/2023] [Indexed: 03/25/2024] Open
Abstract
We develop a large-scale single-cell ATAC-seq method by combining Tn5-based pre-indexing with 10× Genomics barcoding, enabling the indexing of up to 200,000 nuclei across multiple samples in a single reaction. We profile 449,953 nuclei across diverse tissues, including the human cortex, mouse brain, human lung, mouse lung, mouse liver, and lung tissue from a club cell secretory protein knockout (CC16-/-) model. Our study of CC16-/- nuclei uncovers previously underappreciated technical artifacts derived from remnant 129 mouse strain genetic material, which cause profound cell-type-specific changes in regulatory elements near many genes, thereby confounding the interpretation of this commonly referenced mouse model.
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Affiliation(s)
- Hao Zhang
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA
- Asthma & Airway Disease Research Center, University of Arizona, Tucson, AZ, USA
| | - Ryan M Mulqueen
- Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, OR, USA
| | - Natalie Iannuzo
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA
| | - Dominique O Farrera
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, AZ, USA
| | - Francesca Polverino
- Asthma & Airway Disease Research Center, University of Arizona, Tucson, AZ, USA
- Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona, Tucson, AZ, USA
- Banner - University Medicine North, Pulmonary - Clinic F, Tucson, AZ, USA
| | - James J Galligan
- Department of Pharmacology and Toxicology, University of Arizona, Tucson, AZ, USA
| | - Julie G Ledford
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA
- Asthma & Airway Disease Research Center, University of Arizona, Tucson, AZ, USA
| | - Andrew C Adey
- Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, OR, USA.
- Cancer Early Detection Advanced Research Center, Oregon Health & Science University, Portland, OR, USA.
- Oregon Health & Science University, Knight Cancer Institute, Portland, OR, USA.
- Oregon Health & Science University, Knight Cardiovascular Institute, Portland, OR, USA.
| | - Darren A Cusanovich
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA.
- Asthma & Airway Disease Research Center, University of Arizona, Tucson, AZ, USA.
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3
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Iannuzo N, Welfley H, Li NC, Johnson MDL, Rojas-Quintero J, Polverino F, Guerra S, Li X, Cusanovich DA, Langlais PR, Ledford JG. CC16 drives VLA-2-dependent SPLUNC1 expression. Front Immunol 2023; 14:1277582. [PMID: 38053993 PMCID: PMC10694244 DOI: 10.3389/fimmu.2023.1277582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 10/30/2023] [Indexed: 12/07/2023] Open
Abstract
Rationale CC16 (Club Cell Secretory Protein) is a protein produced by club cells and other non-ciliated epithelial cells within the lungs. CC16 has been shown to protect against the development of obstructive lung diseases and attenuate pulmonary pathogen burden. Despite recent advances in understanding CC16 effects in circulation, the biological mechanisms of CC16 in pulmonary epithelial responses have not been elucidated. Objectives We sought to determine if CC16 deficiency impairs epithelial-driven host responses and identify novel receptors expressed within the pulmonary epithelium through which CC16 imparts activity. Methods We utilized mass spectrometry and quantitative proteomics to investigate how CC16 deficiency impacts apically secreted pulmonary epithelial proteins. Mouse tracheal epithelial cells (MTECS), human nasal epithelial cells (HNECs) and mice were studied in naïve conditions and after Mp challenge. Measurements and main results We identified 8 antimicrobial proteins significantly decreased by CC16-/- MTECS, 6 of which were validated by mRNA expression in Severe Asthma Research Program (SARP) cohorts. Short Palate Lung and Nasal Epithelial Clone 1 (SPLUNC1) was the most differentially expressed protein (66-fold) and was the focus of this study. Using a combination of MTECs and HNECs, we found that CC16 enhances pulmonary epithelial-driven SPLUNC1 expression via signaling through the receptor complex Very Late Antigen-2 (VLA-2) and that rCC16 given to mice enhances pulmonary SPLUNC1 production and decreases Mycoplasma pneumoniae (Mp) burden. Likewise, rSPLUNC1 results in decreased Mp burden in mice lacking CC16 mice. The VLA-2 integrin binding site within rCC16 is necessary for induction of SPLUNC1 and the reduction in Mp burden. Conclusion Our findings demonstrate a novel role for CC16 in epithelial-driven host defense by up-regulating antimicrobials and define a novel epithelial receptor for CC16, VLA-2, through which signaling is necessary for enhanced SPLUNC1 production.
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Affiliation(s)
- Natalie Iannuzo
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, United States
| | - Holly Welfley
- Asthma and Airway Disease Research Center, Tucson, AZ, United States
| | | | | | | | | | - Stefano Guerra
- Asthma and Airway Disease Research Center, Tucson, AZ, United States
- Department of Medicine, Division of Pulmonary, Allergy, Critical Care, and Sleep Medicine, University of Arizona, Tucson, AZ, United States
| | - Xingnan Li
- Department of Medicine, Division of Genetics, Genomics, and Precision Medicine, University of Arizona, Tucson, AZ, United States
| | - Darren A. Cusanovich
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, United States
- Asthma and Airway Disease Research Center, Tucson, AZ, United States
| | - Paul R. Langlais
- Department of Medicine, Division of Endocrinology, University of Arizona, Tucson, AZ, United States
| | - Julie G. Ledford
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, United States
- Asthma and Airway Disease Research Center, Tucson, AZ, United States
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Diao Q, Qin X, Hu N, Ling Y, Hua Q, Li M, Li X, Zhou H, Liu Y, Zeng H, Liang J, Wu Y, Jiang Y. Long non-coding RNAs mediate the association between short-term PM 2.5 exposure and circulating biomarkers of systemic inflammation. Environ Pollut 2023; 335:122299. [PMID: 37541382 DOI: 10.1016/j.envpol.2023.122299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 07/27/2023] [Accepted: 07/30/2023] [Indexed: 08/06/2023]
Abstract
Although short-term fine particulate matter (PM2.5) exposure is associated with systemic inflammation, the effect of lncRNA on these association remains unknown. This study aims to investigate whether the plasma lncRNA mediate the effect of short-term PM2.5 exposure on systemic inflammation. In this cross-sectional study, plasma Clara cell protein 16 (CC16), interleukin 6 (IL-6), IL-8, tumor necrosis factor-α (TNF-α) and lncRNA expression levels were measured in 161 adults between March and April in 2018 in Shijiazhuang, China. PM2.5 concentrations were estimated 0-3 days prior to the examination date and the moving averages were calculated. Multiple linear regressions were used to evaluate the associations between PM2.5, the four biomarkers and lncRNA expression levels. Mediation analyses were performed to explore the potential roles of lncRNA expression in these associations. The median concentration of PM2.5 ranged from 39.65 to 60.91 mg/m3 across different lag days. The most significant effects on IL-6 and TNF-α per interquartile range increase in PM2.5 were observed at lag 0-3 days, with increases of 0.70 pg/mL (95% CI: 0.33, 1.07) and 0.21 pg/mL (95% CI: 0.06, 0.36), respectively. While the associations between PM2.5 and IL-8 (0.68 pg/mL, 95% CI: 0.34, 1.02) and CC16 (3.86 ng/mL, 95% CI: 1.60, 6.13) were stronger at lag 0 day. Interestingly, a negative association between PM2.5 and the expression of four novel lncRNAs (lnc-ACAD11-1:1, lnc-PRICKLE1-4:1, lnc-GPR39-7:2, and lnc-MTRNR2L12-3:6) were observed at each lag days. Furthermore, these lncRNAs mediated the effects of PM2.5 on the four biomarkers, with proportions of mediation ranged from 2.27% (95% CI: 1.19%, 9.82%) for CC16 to 35.60% (95% CI: 17.16%, 175.45%) for IL-6. Our findings suggested that plasma lncRNA expression mediat the acute effects of PM2.5 exposure on systematic inflammation. These highlight a need to consider circulating lncRNA expression as biomarkers to reduce health risks associated with PM2.5.
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Affiliation(s)
- Qinqin Diao
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, 511518, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Xiaodi Qin
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, 511518, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Ningdong Hu
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, 511518, China
| | - Yihui Ling
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Qiuhan Hua
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Meizhen Li
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Xun Li
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Hanyu Zhou
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Yufei Liu
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Huixian Zeng
- Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China
| | - Jihuan Liang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, 511518, China
| | - Yongxian Wu
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, 511518, China
| | - Yiguo Jiang
- The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan People's Hospital, Qingyuan, 511518, China; Institute for Chemical Carcinogenesis, Guangzhou Medical University, Guangzhou, 511436, China.
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5
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Voraphani N, Stern DA, Ledford JG, Spangenberg AL, Zhai J, Wright AL, Morgan WJ, Kraft M, Sherrill DL, Curtin JA, Murray CS, Custovic A, Kull I, Hallberg J, Bergström A, Herrera-Luis E, Halonen M, Martinez FD, Simpson A, Melén E, Guerra S. Circulating CC16 and Asthma: A Population-based, Multicohort Study from Early Childhood through Adult Life. Am J Respir Crit Care Med 2023; 208:758-769. [PMID: 37523710 PMCID: PMC10563188 DOI: 10.1164/rccm.202301-0041oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 07/31/2023] [Indexed: 08/02/2023] Open
Abstract
Rationale: Club cell secretory protein (CC16) is an antiinflammatory protein highly expressed in the airways. CC16 deficiency has been associated with lung function deficits, but its role in asthma has not been established conclusively. Objectives: To determine 1) the longitudinal association of circulating CC16 with the presence of active asthma from early childhood through adult life and 2) whether CC16 in early childhood predicts the clinical course of childhood asthma into adult life. Methods: We assessed the association of circulating CC16 and asthma in three population-based birth cohorts: the Tucson Children's Respiratory Study (years 6-36; total participants, 814; total observations, 3,042), the Swedish Barn/Children, Allergy, Milieu, Stockholm, Epidemiological survey (years 8-24; total participants, 2,547; total observations, 3,438), and the UK Manchester Asthma and Allergy Study (years 5-18; total participants, 745; total observations, 1,626). Among 233 children who had asthma at the first survey in any of the cohorts, baseline CC16 was also tested for association with persistence of symptoms. Measurements and Main Results: After adjusting for covariates, CC16 deficits were associated with increased risk for the presence of asthma in all cohorts (meta-analyzed adjusted odds ratio per 1-SD CC16 decrease, 1.20; 95% confidence interval [CI], 1.12-1.28; P < 0.0001). The association was particularly strong for asthma with frequent symptoms (meta-analyzed adjusted relative risk ratio, 1.40; 95% CI, 1.24-1.57; P < 0.0001), was confirmed for both atopic and nonatopic asthma, and was independent of lung function impairment. After adjustment for known predictors of persistent asthma, children with asthma in the lowest CC16 tertile had a nearly fourfold increased risk for having frequent symptoms persisting into adult life compared with children with asthma in the other two CC16 tertiles (meta-analyzed adjusted odds ratio, 3.72; 95% CI, 1.78-7.76; P < 0.0001). Conclusions: Circulating CC16 deficits are associated with the presence of asthma with frequent symptoms from childhood through midadult life and predict the persistence of asthma symptoms into adulthood. These findings support a possible protective role of CC16 in asthma and its potential use for risk stratification.
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Affiliation(s)
- Nipasiri Voraphani
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
| | - Debra A. Stern
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
| | - Julie G. Ledford
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
| | - Amber L. Spangenberg
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
| | - Jing Zhai
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
| | - Anne L. Wright
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
| | - Wayne J. Morgan
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
| | - Monica Kraft
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
| | - Duane L. Sherrill
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
| | - John A. Curtin
- Division of Immunology, Immunity to Infection and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
- Manchester Academic Health Science Centre and National Institute for Health and Care Research Biomedical Research Centre, Manchester University Hospitals National Health Service Foundation Trust, Manchester, United Kingdom
| | - Clare S. Murray
- Division of Immunology, Immunity to Infection and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
- Manchester Academic Health Science Centre and National Institute for Health and Care Research Biomedical Research Centre, Manchester University Hospitals National Health Service Foundation Trust, Manchester, United Kingdom
| | - Adnan Custovic
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Inger Kull
- Department of Clinical Sciences and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sachs’ Children and Youth Hospital, Stockholm, Sweden
| | - Jenny Hallberg
- Department of Clinical Sciences and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sachs’ Children and Youth Hospital, Stockholm, Sweden
| | - Anna Bergström
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; and
| | - Esther Herrera-Luis
- Genomics and Health Group, Department of Biochemistry, Microbiology, Cell Biology and Genetics, Universidad de La Laguna, La Laguna, Spain
| | - Marilyn Halonen
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
| | - Fernando D. Martinez
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
| | - Angela Simpson
- Division of Immunology, Immunity to Infection and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
- Manchester Academic Health Science Centre and National Institute for Health and Care Research Biomedical Research Centre, Manchester University Hospitals National Health Service Foundation Trust, Manchester, United Kingdom
| | - Erik Melén
- Department of Clinical Sciences and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sachs’ Children and Youth Hospital, Stockholm, Sweden
| | - Stefano Guerra
- Asthma and Airway Disease Research Center, University of Arizona, Tucson, Arizona
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Hu X, Xu J, Li P, Zheng H. Correlation of Serum Clara Cell Secretory Protein 16, Plasma Fibrinogen and Serum Amyloid A with the Severity of Acute Exacerbated COPD and Their Combination in Prognosis Assessment. Int J Chron Obstruct Pulmon Dis 2023; 18:1949-1957. [PMID: 37700931 PMCID: PMC10493104 DOI: 10.2147/copd.s410917] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/25/2023] [Indexed: 09/14/2023] Open
Abstract
Introduction Chronic obstructive pulmonary disease (COPD) has tremendous detrimental effects on patients' quality of life, lung function, disease progression and socioeconomic burden. This study aimed to investigate new serum biomarkers for COPD detection. Three recently emerging biomarkers, including Clara cell secretory protein⁃16 (CC16), plasma fibrinogen (FIB) and serum amyloid A (SAA), were investigated for their potential in stratifying the severity of COPD. Methods A total of 220 patients with AECOPD were recruited. Multivariate logistical regression was used to analyze odds ratios of an array of characteristic of patients, including age, global initiative for chronic obstructive lung disease (GOLD), diabetes mellitus, heart diseases, PaCO2, CC16, FIB, and SAA. Correlations of CC16, FIB and SAA levels to each other, GOLD, and PaCO2 were also measured using Spearman correlation. Receiver operating characteristic (ROC)/curve analysis was used to assess sensitivity and specificity of CC16, FIB, SAA and the combination of the three markers in identifying AECOPD patients with poor prognosis. Results Our data suggested that age, GOLD, diabetes mellitus, heart diseases, PaCO2, CC16, FIB, and SAA are all significant risk factors for poor prognosis of AECOPD. CC16, FIB and SAA were positively correlated to each other and to GOLD and PaCO2 levels. CC16, FIB and SAA all had a high sensitivity and specificity in identifying patients with a poor prognosis. CC16, FIB and SAA are new markers with potentially high predictive value in AECOPD. Discussion Our data support further development of these biomarkers to improve clinical management of AECOPD through providing more accurate prognosis of AECOPD patients that enable timely adjustment of treatment plans.
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Affiliation(s)
- Xiaojuan Hu
- Department of Pulmonary and Critical Care Medicine, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, 200434, People’s Republic of China
| | - Jin Xu
- Department of Pulmonary and Critical Care Medicine, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, 200434, People’s Republic of China
| | - Pei Li
- Department of Nephrology, the Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050004, People’s Republic of China
| | - Hui Zheng
- Department of Clinical Laboratory, Fudan University Shanghai Cancer Center, Shanghai, 200032, People’s Republic of China
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7
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Lu J, Rahman MI, Kazan IC, Halloran NR, Bobkov AA, Ozkan SB, Ghirlanda G. Engineering gain-of-function mutants of a WW domain by dynamics and structural analysis. Protein Sci 2023; 32:e4759. [PMID: 37574787 PMCID: PMC10464296 DOI: 10.1002/pro.4759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 07/17/2023] [Accepted: 08/10/2023] [Indexed: 08/15/2023]
Abstract
Proteins gain optimal fitness such as foldability and function through evolutionary selection. However, classical studies have found that evolutionarily designed protein sequences alone cannot guarantee foldability, or at least not without considering local contacts associated with the initial folding steps. We previously showed that foldability and function can be restored by removing frustration in the folding energy landscape of a model WW domain protein, CC16, which was designed based on Statistical Coupling Analysis (SCA). Substitutions ensuring the formation of five local contacts identified as "on-path" were selected using the closest homolog native folded sequence, N21. Surprisingly, the resulting sequence, CC16-N21, bound to Group I peptides, while N21 did not. Here, we identified single-point mutations that enable N21 to bind a Group I peptide ligand through structure and dynamic-based computational design. Comparison of the docked position of the CC16-N21/ligand complex with the N21 structure showed that residues at positions 9 and 19 are important for peptide binding, whereas the dynamic profiles identified position 10 as allosterically coupled to the binding site and exhibiting different dynamics between N21 and CC16-N21. We found that swapping these positions in N21 with matched residues from CC16-N21 recovers nature-like binding affinity to N21. This study validates the use of dynamic profiles as guiding principles for affecting the binding affinity of small proteins.
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Affiliation(s)
- Jin Lu
- Department of Physics and Center for Biological PhysicsArizona State UniversityTempeArizonaUSA
| | | | - I. Can Kazan
- Department of Physics and Center for Biological PhysicsArizona State UniversityTempeArizonaUSA
| | | | - Andrey A. Bobkov
- Conrad Prebys Center for Chemical GenomicsSanford Burnham Prebys Medical Discovery InstituteCaliforniaUSA
| | - S. Banu Ozkan
- Department of Physics and Center for Biological PhysicsArizona State UniversityTempeArizonaUSA
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8
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Iannuzo N, Dy ABC, Guerra S, Langlais PR, Ledford JG. The Impact of CC16 on Pulmonary Epithelial-Driven Host Responses during Mycoplasma pneumoniae Infection in Mouse Tracheal Epithelial Cells. Cells 2023; 12:1984. [PMID: 37566063 PMCID: PMC10416898 DOI: 10.3390/cells12151984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/27/2023] [Accepted: 07/31/2023] [Indexed: 08/12/2023] Open
Abstract
Club Cell Secretory Protein (CC16) plays many protective roles within the lung; however, the complete biological functions, especially regarding the pulmonary epithelium during infection, remain undefined. We have previously shown that CC16-deficient (CC16-/-) mouse tracheal epithelial cells (MTECs) have enhanced Mp burden compared to CC16-sufficient (WT) MTECs; therefore, in this study, we wanted to further define how the pulmonary epithelium responds to infection in the context of CC16 deficiency. Using mass spectrometry and quantitative proteomics to analyze proteins secreted apically from MTECs grown at an air-liquid interface, we investigated the protective effects that CC16 elicits within the pulmonary epithelium during Mycoplasma pneumoniae (Mp) infection. When challenged with Mp, WT MTECs have an overall reduction in apical protein secretion, whereas CC16-/- MTECs have increased apical protein secretion compared to their unchallenged controls. Following Gene Ontology and Kyoto Encyclopedia of Genes and Genomes (KEGG) assessment, many of the proteins upregulated from CC16-/- MTECS (unchallenged and during Mp infection) were related to airway remodeling, which were not observed by WT MTECs. These findings suggest that CC16 may be important in providing protection within the pulmonary epithelium during respiratory infection with Mp, which is the major causative agent of community-acquired pneumoniae.
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Affiliation(s)
- Natalie Iannuzo
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ 85724, USA;
| | | | - Stefano Guerra
- Asthma and Airway Disease Research Center, Tucson, AZ 85724, USA
| | - Paul R. Langlais
- Department of Medicine, Division of Endocrinology, University of Arizona, Tucson, AZ 85724, USA
| | - Julie G. Ledford
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ 85724, USA;
- Asthma and Airway Disease Research Center, Tucson, AZ 85724, USA
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9
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Jung CG, Cao TBT, Quoc QL, Yang EM, Ban GY, Park HS. Role of club cell 16-kDa secretory protein in asthmatic airways. Clin Exp Allergy 2023. [PMID: 37009718 DOI: 10.1111/cea.14315] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 03/08/2023] [Accepted: 03/16/2023] [Indexed: 04/04/2023]
Abstract
BACKGROUND Club cell 16-kDa secretory protein (CC16) is a pneumoprotein and functions as an anti-inflammatory or antioxidant protein. However, altered levels of serum CC16 as well as their effect on airways inflammation have not been fully evaluated. METHODS We recruited 63 adult asthmatics on maintenance medications and 61 healthy controls (HCs). The asthmatic subjects were divided into two groups according to the result of bronchodilator responsiveness (BDR) test: the present BDR (n = 17) and absent BDR (n = 46) groups. Serum CC16 levels were measured by ELISA. As an in vitro study, the effect of Dermatophagoides pteronyssinus antigen 1 (Der p1) on the production of CC16 in airways epithelial cells (AECs) according to a time-dependent manner was assessed; the effects of CC16 protein on oxidative stress system, airways inflammation and remodelling were tested. RESULTS Serum CC16 levels showed significantly higher in the asthmatics than in the HCs (p < .001) with a positive correlation with FEV1 % (r = .352, p = .005). The present BDR group had significantly lower levels of serum CC16, FEV1 % and MMEF%, but showed higher level of FeNO than the absent BDR group. Serum CC16 levels (below 496.0 ng/mL) could discriminate the present BDR group from the absent BDR group (area under the curve = 0.74, p = .004). In vitro testing demonstrated that Der p1 exposure significantly induced CC16 release from AECs for 1 h, which was progressively decreased after 6 h and followed by MMP-9 and TIMP-1 production. These findings were associated with oxidant/antioxidant disequilibrium and restored by CC16 treatment (but not dexamethasone). CONCLUSION Decreased CC16 production contributes to persistent airways inflammation and lung function decline. CC16 may be a potential biomarker for asthmatics with BDR.
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Affiliation(s)
- Chang-Gyu Jung
- Department of Allergy and Clinical Immunology, Keimyung University School of Medicine, Daegu, South Korea
| | - Thi Bich Tra Cao
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, South Korea
| | - Quang Luu Quoc
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, South Korea
| | - Eun-Mi Yang
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, South Korea
| | - Ga-Young Ban
- Department of Pulmonary, Allergy, and Critical Care Medicine, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
| | - Hae-Sim Park
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, South Korea
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10
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Li X, Guerra S, Ledford JG, Kraft M, Li H, Hastie AT, Castro M, Denlinger LC, Erzurum SC, Fahy JV, Gaston B, Israel E, Jarjour NN, Levy BD, Mauger DT, Moore WC, Zein J, Kaminski N, Wenzel SE, Woodruff PG, Meyers DA, Bleecker ER. Low CC16 mRNA Expression Levels in Bronchial Epithelial Cells Are Associated with Asthma Severity. Am J Respir Crit Care Med 2023; 207:438-451. [PMID: 36066606 PMCID: PMC9940145 DOI: 10.1164/rccm.202206-1230oc] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
Rationale: CC16 is a protein mainly produced by nonciliated bronchial epithelial cells (BECs) that participates in host defense. Reduced CC16 protein concentrations in BAL and serum are associated with asthma susceptibility. Objectives: Few studies have investigated the relationship between CC16 and asthma progression, and none has focused on BECs. In this study, we sought to determine if CC16 mRNA expression levels in BECs are associated with asthma severity. Methods: Association analyses between CC16 mRNA expression levels in BECs (242 asthmatics and 69 control subjects) and asthma-related phenotypes in Severe Asthma Research Program were performed using a generalized linear model. Measurements and Main Results: Low CC16 mRNA expression levels in BECs were significantly associated with asthma susceptibility and asthma severity, high systemic corticosteroids use, high retrospective and prospective asthma exacerbations, and low pulmonary function. Low CC16 mRNA expression levels were significantly associated with high T2 inflammation biomarkers (fractional exhaled nitric oxide and sputum eosinophils). CC16 mRNA expression levels were negatively correlated with expression levels of Th2 genes (IL1RL1, POSTN, SERPINB2, CLCA1, NOS2, and MUC5AC) and positively correlated with expression levels of Th1 and inflammation genes (IL12A and MUC5B). A combination of two nontraditional T2 biomarkers (CC16 and IL-6) revealed four asthma endotypes with different characteristics of T2 inflammation, obesity, and asthma severity. Conclusions: Our findings indicate that low CC16 mRNA expression levels in BECs are associated with asthma susceptibility, severity, and exacerbations, partially through immunomodulation of T2 inflammation. CC16 is a potential nontraditional T2 biomarker for asthma development and progression.
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Affiliation(s)
- Xingnan Li
- Division of Genetics, Genomics, and Precision Medicine, and
| | - Stefano Guerra
- Asthma and Airway Disease Research Center, Department of Medicine, University of Arizona, Tucson, Arizona
| | - Julie G. Ledford
- Asthma and Airway Disease Research Center, Department of Medicine, University of Arizona, Tucson, Arizona
| | - Monica Kraft
- Asthma and Airway Disease Research Center, Department of Medicine, University of Arizona, Tucson, Arizona
| | - Huashi Li
- Division of Genetics, Genomics, and Precision Medicine, and
| | - Annette T. Hastie
- Department of Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Mario Castro
- Division of Pulmonary, Critical Care, and Sleep Medicine, University of Kansas School of Medicine, Kansas City, Kansas
| | - Loren C. Denlinger
- Department of Medicine, University of Wisconsin School of Medicine & Public Health, Madison, Wisconsin
| | - Serpil C. Erzurum
- Lerner Research Institute and the Respiratory Institute, Cleveland Clinic, Cleveland, Ohio
| | - John V. Fahy
- Division of Pulmonary, Critical Care, Sleep, and Allergy, Department of Medicine, University of California at San Francisco, San Francisco, California
| | - Benjamin Gaston
- Wells Center for Pediatric Research and Riley Hospital for Children, Indiana University, Indianapolis, Indiana
| | - Elliot Israel
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - Nizar N. Jarjour
- Department of Medicine, University of Wisconsin School of Medicine & Public Health, Madison, Wisconsin
| | - Bruce D. Levy
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
| | - David T. Mauger
- Department of Public Health Sciences, College of Medicine, Penn State University, Hershey, Pennsylvania
| | - Wendy C. Moore
- Department of Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Joe Zein
- Lerner Research Institute and the Respiratory Institute, Cleveland Clinic, Cleveland, Ohio
| | - Naftali Kaminski
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut; and
| | - Sally E. Wenzel
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Prescott G. Woodruff
- Division of Pulmonary, Critical Care, Sleep, and Allergy, Department of Medicine, University of California at San Francisco, San Francisco, California
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11
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Goudarzi H, Kimura H, Kimura H, Makita H, Takimoto-Sato M, Abe Y, Oguma A, Matsumoto M, Takei N, Matsumoto-Sasaki M, Shimizu K, Suzuki M, Shijubo N, Huang SK, Hizawa N, Nishimura M, Konno S. Association of serum CC16 levels with eosinophilic inflammation and respiratory dysfunction in severe asthma. Respir Med 2023; 206:107089. [PMID: 36542961 DOI: 10.1016/j.rmed.2022.107089] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 12/01/2022] [Accepted: 12/10/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND There are knowledge gaps in the potential role of Club cell 16-kDa secretory protein (CC16) in severe asthma phenotypes and type 2 inflammation, as well as the longitudinal effect of CC16 on pulmonary function tests and exacerbation risk in epidemiological studies. OBJECTIVE AND METHODS To assess whether serum CC16 is associated with eosinophilic inflammation in patients with severe asthma. We also examined the effect of this protein on the annual decline in forced expiratory volume in the first second (FEV1) and the risk of exacerbation using a longitudinal approach. We recruited 127 patients with severe asthma from 30 hospitals/pulmonary clinics in Hokkaido, Japan. The least square means and standard error were calculated for T-helper 2 (Th2) biomarkers and pulmonary function test across CC16 tertiles at baseline. We did the same for asthma exacerbation and annual decline in FEV1 with 3 and 5 years' follow-up, respectively. RESULTS We found that serum CC16 was inversely associated with sputum eosinophils and blood periostin in a dose-response manner. Baseline CC16 and FEV1/forced vital capacity ratio were positively associated in adjusted models (p for trend = 0.008). Patients with the lowest tertile of serum CC16 levels at baseline had a -14.3 mL decline in FEV1 than those with the highest tertile over 5 years of follow-up (p for trend = 0.031, fully adjusted model). We did not find any association of CC16 with exacerbation risk. CONCLUSION Patients with severe asthma with lower circulatory CC16 had enhanced eosinophilic inflammation with rapid FEV1 decline over time.
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12
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Nauwelaerts SJD, Van Goethem N, De Cremer K, Sierra NB, Vercauteren J, Stroobants C, Bernard A, Nawrot T, Roosens NHC, De Keersmaecker SCJ. Noninvasive integrative approach applied to children in the context of recent air pollution exposure demonstrates association between fractional exhaled nitric oxide (FeNO) and urinary CC16. Environ Res 2023; 216:114441. [PMID: 36191620 DOI: 10.1016/j.envres.2022.114441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 09/19/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Exposure to the air pollutant particulate matter (PM) is associated with increased risks of respiratory diseases and enhancement of airway inflammation in children. In the context of large scale air pollution studies, it can be challenging to measure fractional exhaled nitric oxide (FeNO) as indicator of lung inflammation. Urinary CC16 (U-CC16) is a potential biomarker of increased lung permeability and toxicity, increasing following short-term PM2.5 exposure. The single nucleotide polymorphism (SNP) CC16 G38A (rs3741240) affects CC16 levels and respiratory health. Our study aimed at assessing the use of U-CC16 (incl. CC16 G38A from saliva) as potential alternative for FeNO by investigating their mutual correlation in children exposed to PM. Samples from a small-scale study conducted in 42 children from urban (n = 19) and rural (n = 23) schools examined at two time points, were analysed. When considering recent (lag1) low level exposure to PM2.5 as air pollution measurement, we found that U-CC16 was positively associated with FeNO (β = 0.23; 95% CI [-0.01; 0.47]; p = 0.06) in an adjusted analysis using a linear mixed effects model. Further, we observed a positive association between PM2.5 and FeNO (β = 0.56; 95% CI [0.02; 1.09]; p = 0.04) and higher FeNO in urban school children as compared to rural school children (β = 0.72; 95% CI [0.12; 1.31]; p = 0.02). Although more investigations are needed, our results suggest that inflammatory responses evidenced by increased FeNO are accompanied by potential increased lung epithelium permeability and injury, evidenced by increased U-CC16. In future large scale studies, where FeNO measurement is less feasible, the integrated analysis of U-CC16 and CC16 G38A, using noninvasive samples, might be a suitable alternative to assess the impact of air pollution exposure on the respiratory health of children, which is critical for policy development at population level.
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Affiliation(s)
- Sarah J D Nauwelaerts
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium; Centre for Toxicology and Applied Pharmacology, University Catholique de Louvain, Brussels, Belgium
| | - Nina Van Goethem
- Department of Epidemiology and Public Health, Sciensano, Brussels, Belgium
| | - Koen De Cremer
- Platform Chromatography and Mass Spectrometry, Sciensano, Brussels, Belgium
| | | | | | - Christophe Stroobants
- Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium
| | - Alfred Bernard
- Centre for Toxicology and Applied Pharmacology, University Catholique de Louvain, Brussels, Belgium
| | - Tim Nawrot
- Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590, Diepenbeek, Belgium; Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Nancy H C Roosens
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium
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13
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Chen M, Xu K, He Y, Jin J, Mao R, Gao L, Zhang Y, Wang G, Gao P, Xie M, Liu C, Chen Z. CC16 as an Inflammatory Biomarker in Induced Sputum Reflects Chronic Obstructive Pulmonary Disease (COPD) Severity. Int J Chron Obstruct Pulmon Dis 2023; 18:705-717. [PMID: 37139166 PMCID: PMC10150740 DOI: 10.2147/copd.s400999] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 04/06/2023] [Indexed: 05/05/2023] Open
Abstract
Purpose The progression of an abnormal inflammatory response plays a crucial role in the lung function decline of chronic obstructive pulmonary disease (COPD) patients. Compared to serum biomarkers, inflammatory biomarkers in induced sputum would be a more reliable reflection of inflammatory processes in the airways. Patients and Methods A total of 102 COPD participants were divided into a mild-to-moderate group (FEV1%pred≥ 50%, n=57) and a severe-to-very-severe group (FEV1%pred<50%, n=45). We measured a series of inflammatory biomarkers in induced sputum and analyzed their association with lung function and SGRQ in COPD patients. To evaluate the relationship between inflammatory biomarkers and the inflammatory phenotype, we also analyzed the correlation between biomarkers and airway eosinophilic phenotype. Results We found increased mRNA levels of MMP9, LTB4R, and A1AR and decreased levels of CC16 mRNA in induced sputum in the severe-to-very-severe group. After adjustment for age, sex and other biomarkers, CC16 mRNA expression was positively associated with FEV1%pred (r=0.516, p=0.004) and negatively correlated with SGRQ scores (r=-0.3538, p=0.043). As previously known, decreased CC16 was related to the migration and aggregation of eosinophils in airway. It was also found that CC16 had a moderate negative correlation with the eosinophilic inflammation in airway (r=-0.363, p=0.045) in our COPD patients. Conclusion Low CC16 mRNA expression levels in induced sputum were associated with low FEV1%pred and a high SGRQ score in COPD patients. Sputum CC16 as a potential biomarker for predicting COPD severity in clinical practice might attribute to the involvement of CC16 in airway eosinophilic inflammation.
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Affiliation(s)
- Mengjie Chen
- Department of Respiratory and Critical Care Medicine of Zhongshan Hospital, Shanghai Institute of Respiratory Disease, Fudan University, Shanghai, People’s Republic of China
| | - Kan Xu
- Geriatric Department of Zhongshan Hospital, Shanghai Institute of Respiratory Disease, Fudan University, Shanghai, People’s Republic of China
| | - Yuting He
- Department of Respiratory and Critical Care Medicine of Zhongshan Hospital, Shanghai Institute of Respiratory Disease, Fudan University, Shanghai, People’s Republic of China
| | - Jianjun Jin
- Research Center of Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China
| | - Ruolin Mao
- Department of Respiratory and Critical Care Medicine of Zhongshan Hospital, Shanghai Institute of Respiratory Disease, Fudan University, Shanghai, People’s Republic of China
| | - Lei Gao
- Department of Respiratory and Critical Care Medicine of Zhongshan Hospital, Shanghai Institute of Respiratory Disease, Fudan University, Shanghai, People’s Republic of China
| | - Yi Zhang
- Air Liquide Holding Co., Ltd, Shanghai, People’s Republic of China
| | - Gang Wang
- Department of Respiratory and Critical Care Medicine, Clinical Research Center for Respiratory Disease, West China Hospital, Sichuan University, Chengdu, People’s Republic of China
| | - Peng Gao
- Department of Respiratory Medicine, The Second Affiliated Hospital of Jilin University, Changchun, People’s Republic of China
| | - Min Xie
- Department of Pulmonary and Critical Care Medicine, Tongji Hospital, Tongji Medical 10 College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Chunfang Liu
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, People’s Republic of China
- Chunfang Liu, Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical College, Fudan University, 12# Wlmq Road, Shanghai, People’s Republic of China, Email
| | - Zhihong Chen
- Department of Respiratory and Critical Care Medicine of Zhongshan Hospital, Shanghai Institute of Respiratory Disease, Fudan University, Shanghai, People’s Republic of China
- Correspondence: Zhihong Chen, Department of Respiratory and Critical Care Medicine of Zhongshan Hospital, No. 180 Fenglin Road, Shanghai, People’s Republic of China, Tel +86-21-64041990-2445, Fax +86-21-64187165, Email
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14
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Nauwelaerts SJD, Van Goethem N, Ureña BT, De Cremer K, Bernard A, Saenen ND, Nawrot TS, Roosens NHC, De Keersmaecker SCJ. Urinary CC16, a potential indicator of lung integrity and inflammation, increases in children after short-term exposure to PM 2.5/PM 10 and is driven by the CC16 38GG genotype. Environ Res 2022; 212:113272. [PMID: 35439460 DOI: 10.1016/j.envres.2022.113272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 04/04/2022] [Accepted: 04/06/2022] [Indexed: 06/14/2023]
Abstract
Particular matter (PM) exposure is a big hazard for public health, especially for children. Serum CC16 is a well-known biomarker of respiratory health. Urinary CC16 (U-CC16) can be a noninvasive alternative, albeit requiring adequate adjustment for renal handling. Moreover, the SNP CC16 G38A influences CC16 levels. This study aimed to monitor the effect of short-term PM exposure on CC16 levels, measured noninvasively in schoolchildren, using an integrative approach. We used a selection of urine and buccal DNA samples from 86 children stored in an existing biobank. Using a multiple reaction monitoring method, we measured U-CC16, as well as RBP4 (retinol binding protein 4) and β2M (beta-2-microglobulin), required for adjustment. Buccal DNA samples were used for CC16 G38A genotyping. Linear mixed-effects models were used to find relevant associations between U-CC16 and previously obtained data from recent daily PM ≤ 2.5 or 10 μm exposure (PM2.5, PM10) modeled at the child's residence. Our study showed that exposure to low PM at the child's residence (median levels 18.9 μg/m³ (PM2.5) and 23.6 μg/m³ (PM10)) one day before sampling had an effect on the covariates-adjusted U-CC16 levels. This effect was dependent on the CC16 G38A genotype, due to its strong interaction with the association between PM levels and covariates-adjusted U-CC16 (P = 0.024 (PM2.5); P = 0.061 (PM10)). Only children carrying the 38GG genotype showed an increase of covariates-adjusted U-CC16, measured 24h after exposure, with increasing PM2.5 and PM10 (β = 0.332; 95% CI: 0.110 to 0.554 and β = 0.372; 95% CI: 0.101 to 0.643, respectively). To the best of our knowledge, this is the first study using an integrative approach to investigate short-term PM exposure of children, using urine to detect early signs of pulmonary damage, and taking into account important determinants such as the genetic background and adequate adjustment of the measured biomarker in urine.
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Affiliation(s)
- Sarah J D Nauwelaerts
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium; Centre for Toxicology and Applied Pharmacology, University Catholique de Louvain, Woluwe, Brussels, Belgium
| | - Nina Van Goethem
- Department of Epidemiology and Public Health, Sciensano, Brussels, Belgium; Department of Epidemiology and Biostatistics, Institut de Recherche Expérimentale et Clinique, Faculty of Public Health, Université catholique de Louvain, Belgium
| | - Berta Tenas Ureña
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium
| | - Koen De Cremer
- Platform Chromatography and Mass Spectrometry, Sciensano, Brussels, Belgium
| | - Alfred Bernard
- Centre for Toxicology and Applied Pharmacology, University Catholique de Louvain, Woluwe, Brussels, Belgium
| | - Nelly D Saenen
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium; Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Nancy H C Roosens
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium
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15
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Goudarzi H, Kimura H, Kimura H, Makita H, Matsumoto M, Takei N, Shimizu K, Suzuki M, Watanabe T, Kikuchi E, Ohira H, Tsujino I, Sakakibara-Konishi J, Shinagawa N, Shijubo N, Sato H, Shigehara K, Kaga K, Hida Y, Murakami S, Ebihara Y, Nakamura A, Miyoshi H, Hirano S, Hizawa N, Atsumi T, Huang SK, Ito YM, Nishimura M, Konno S. Effects of obesity on CC16 and their potential role in overweight/obese asthma. Respir Res 2022; 23:174. [PMID: 35768822 DOI: 10.1186/s12931-022-02038-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 04/24/2022] [Indexed: 11/21/2022] Open
Abstract
Introduction Club cell secretory protein-16 (CC16) is a major anti-inflammatory protein expressed in the airway; however, the potential role of CC16 on overweight/obese asthma has not been assessed. In this study, we examined whether obesity reduces airway/circulatory CC16 levels using experimental and epidemiological studies. Then, we explored the mediatory role of CC16 in the relationship of overweight/obesity with clinical asthma measures. Methods Circulating CC16 levels were assessed by ELISA in three independent human populations, including two groups of healthy and general populations and asthma patients. The percentage of cells expressing club markers in obese vs. non-obese mice and human airways was determined by immunohistochemistry. A causal mediation analysis was conducted to determine whether circulatory CC16 acted as a mediator between overweight/obesity and clinical asthma measures. Results BMI was significantly and monotonously associated with reduced circulating CC16 levels in all populations. The percentage of CC16-expressing cells was reduced in the small airways of both mice and humans with obesity. Finally, mediation analysis revealed significant contributions of circulatory CC16 in the association between BMI and clinical asthma measures; 21.8% of its total effect in BMI’s association with airway hyperresponsiveness of healthy subjects (p = 0.09), 26.4% with asthma severity (p = 0.030), and 23% with the required dose of inhaled corticosteroid (p = 0.042). In logistic regression analysis, 1-SD decrease in serum CC16 levels of asthma patients was associated with 87% increased odds for high dose ICS requirement (p < 0.001). Conclusions We demonstrate that airway/circulating CC16, which is inversely associated with BMI, may mediate development and severity in overweight/obese asthma. Supplementary Information The online version contains supplementary material available at 10.1186/s12931-022-02038-1.
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16
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Fan L, Li W, Ma J, Cheng M, Xie L, Ye Z, Xie Y, Wang B, Yu L, Zhou Y, Chen W. Benzo(a)pyrene induces airway epithelial injury through Wnt5a-mediated non-canonical Wnt-YAP/TAZ signaling. Sci Total Environ 2022; 815:151965. [PMID: 34838920 DOI: 10.1016/j.scitotenv.2021.151965] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 11/10/2021] [Accepted: 11/21/2021] [Indexed: 06/13/2023]
Abstract
Wnt5a is a key mediator of non-canonical Wnt signaling, and an early indicator of epithelial injury and lung dysfunction. Polycyclic aromatic hydrocarbons (PAHs) could induce acute pulmonary pathogenesis, of which the underlying mechanism remains unclear. To elucidate the potential role of Wnt5a-mediated non-canonical Wnt-YAP/TAZ signaling in the lung injury induced by short-term exposure of benzo(a)pyrene (BaP, a representative PAHs), intratracheally instilled mouse model was used and further interfered with its Wnt5a level by small molecule antagonists and agonists. Our data revealed that BaP exposure induced the lung inflammatory response and reduced the expression of Clara cell secretory protein (CC16) in a dose-dependent manner. More importantly, the activation of Wnt5a and downstream YAP/TAZ were accompanied with the enhanced release of epithelial-derived thymic stromal lymphopoietin and interleukin-33, which acted as pro-inflammatory cytokines. Functionally, inhibition of Wnt5a attenuated the BaP-induced inflammation and recuperated CC16 expression, as well as suppressed the epithelial cytokines release. Whereas promoting Wnt5a expression affected the toxic effects of BaP oppositely. Our findings together suggest that Wnt5a is a potential endogenous regulator in lung inflammation and airway epithelial injury, and Wnt5a-YAP/TAZ signaling contributes to lung dysfunction in acute exposure to BaP.
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Affiliation(s)
- Lieyang Fan
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Wei Li
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; School of Public Health, Xuzhou Medical University, Xuzhou 221004, China
| | - Jixuan Ma
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Man Cheng
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Li Xie
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zi Ye
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yujia Xie
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Bin Wang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Linling Yu
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yun Zhou
- School of Public Health, Guangzhou Medical University, Guangzhou 510120, China.
| | - Weihong Chen
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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Stapleton A, Casas M, García J, García R, Sunyer J, Guerra S, Abellan A, Lavi I, Dobaño C, Vidal M, Gascon M. Associations between pre- and postnatal exposure to air pollution and lung health in children and assessment of CC16 as a potential mediator. Environ Res 2022; 204:111900. [PMID: 34419474 DOI: 10.1016/j.envres.2021.111900] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/27/2021] [Accepted: 08/14/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Early life exposure to air pollution can affect lung health. Previous studies have not assessed the implications of both pre- and postnatal exposure to air pollutants on lung function at repeated ages during childhood. In addition, there is the need to identify potential mediators of such effect. OBJECTIVES To longitudinally assess the association between pre- and postnatal air pollution exposure and lung function during childhood. We also aimed to explore the role of Club cell secretory protein (CC16) as a potential mediator in this association. METHODOLOGY We included 487 mother-child pairs from the INMA (INfancia y Medio Ambiente) Sabadell birth cohort, recruited between 2004 and 2006. Air pollution exposure was estimated for pregnancy, pre-school age, and school-age using temporally adjusted land use regression (LUR) modelling. Lung function was measured at ages 4, 7, 9 and 11 by spirometry. At age 4, serum CC16 levels were determined in 287 children. Multivariable linear regression models and linear mixed modelling were applied, while considering potential confounders. RESULTS Prenatal exposure to Particulate Matter (PM)10 and PMcoarse had the most consistent associations with reduced lung function in cross-sectional models. Associations with postnatal exposure were less consistent. Increasing CC16 levels at 4 years were associated with an increase in FEF25-75 (β = 120.4 mL, 95% CI: 6.30, 234.5) from 4 to 11 years of age. No statistically significant associations were found between pre- or postnatal air pollution and CC16 at age 4. CONCLUSION Increasing levels of air pollution exposure, particularly prenatal PM10 and PMcoarse exposure, were associated with a reduction in lung function. We were not able to confirm our hypothesis on the mediation role of CC16 in this association, however our results encourage further exploration of this possibility in future studies.
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Affiliation(s)
- Anna Stapleton
- Maastricht University, Faculty of Health, Medicine and Life Sciences, the Netherlands
| | - Maribel Casas
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain
| | - Judith García
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain
| | - Raquel García
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain
| | - Jordi Sunyer
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain
| | - Stefano Guerra
- ISGlobal, Barcelona, Spain; Asthma and Airway Disease Research Center, University of Arizona, Tucson, AZ, USA
| | - Alicia Abellan
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; Fundació Institut Universitari per a la recerca a l'Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol), Barcelona, Spain; Spanish Consortium for research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | | | - Carlota Dobaño
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Marta Vidal
- ISGlobal, Hospital Clínic, Universitat de Barcelona, Barcelona, Catalonia, Spain
| | - Mireia Gascon
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain.
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18
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Gribben KC, Poole JA, Nelson AJ, Farazi PA, Wichman CS, Heires AJ, Romberger DJ, LeVan TD. Relationships of serum CC16 levels with smoking status and lung function in COPD. Respir Res 2022; 23:247. [PMID: 36114505 PMCID: PMC9479424 DOI: 10.1186/s12931-022-02158-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/21/2022] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The club cell secretory protein (CC16) has anti-inflammatory and antioxidant effects, and low CC16 serum levels have been associated with both risk and progression of COPD, yet the interaction between smoking and CC16 on lung function outcomes remains unknown. METHODS Utilizing cross-sectional data on United States veterans, CC16 serum concentrations were measured by ELISA and log transformed for analyses. Spirometry was conducted and COPD status was defined by post-bronchodilator FEV1/FVC ratio < 0.7. Smoking measures were self-reported on questionnaire. Multivariable logistic and linear regression were employed to examine associations between CC16 levels and COPD, and lung function with adjustment for covariates. Unadjusted Pearson correlations described relationships between CC16 level and lung function measures, pack-years smoked, and years since smoking cessation. RESULTS The study population (N = 351) was mostly male, white, with an average age over 60 years. An interaction between CC16 and smoking status on FEV1/FVC ratio was demonstrated among subjects with COPD (N = 245, p = 0.01). There was a positive correlation among former smokers and negative correlation among current or never smokers with COPD. Among former smokers with COPD, CC16 levels were also positively correlated with years since smoking cessation, and inversely related with pack-years smoked. Increasing CC16 levels were associated with lower odds of COPD (ORadj = 0.36, 95% CI 0.22-0.57, Padj < 0.0001). CONCLUSIONS Smoking status is an important effect modifier of CC16 relationships with lung function. Increasing serum CC16 corresponded to increases in FEV1/FVC ratio in former smokers with COPD versus opposite relationships in current or never smokers. Additional longitudinal studies may be warranted to assess relationship of CC16 with smoking cessation on lung function among subjects with COPD.
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Affiliation(s)
- Kelli C. Gribben
- grid.266813.80000 0001 0666 4105Department of Epidemiology, University of Nebraska Medical Center, Omaha, NE 68198 USA
| | - Jill A. Poole
- grid.266813.80000 0001 0666 4105Division of Allergy and Immunology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198 USA
| | - Amy J. Nelson
- grid.266813.80000 0001 0666 4105Division of Allergy and Immunology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198 USA
| | - Paraskevi A. Farazi
- grid.266813.80000 0001 0666 4105Department of Epidemiology, University of Nebraska Medical Center, Omaha, NE 68198 USA
| | - Christopher S. Wichman
- grid.266813.80000 0001 0666 4105Department of Biostatistics, University of Nebraska Medical Center, Omaha, NE 68198 USA
| | - Art J. Heires
- grid.266813.80000 0001 0666 4105Division of Pulmonary, Critical Care and Sleep, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198 USA
| | - Debra J. Romberger
- grid.266813.80000 0001 0666 4105Division of Pulmonary, Critical Care and Sleep, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198 USA ,grid.478099.b0000 0004 0420 0296VA Nebraska Western Iowa Healthcare System, Omaha, NE 68105 USA
| | - Tricia D. LeVan
- grid.266813.80000 0001 0666 4105Department of Epidemiology, University of Nebraska Medical Center, Omaha, NE 68198 USA ,grid.266813.80000 0001 0666 4105Division of Pulmonary, Critical Care and Sleep, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198 USA ,grid.478099.b0000 0004 0420 0296VA Nebraska Western Iowa Healthcare System, Omaha, NE 68105 USA
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Wang H, Cui J, Hao X, Guo L, Zhao J, Wang R, Liu H. Silicon, an important exposure marker in vivo in silicosis research. Int Arch Occup Environ Health 2021; 94:1513-1522. [PMID: 34110461 DOI: 10.1007/s00420-021-01729-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 03/27/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE The degree of silicosis exposure is closely related to the progress of silicosis. At present, we use animal and human studies to explore whether silicon can be an important exposure marker in the development of silicosis. METHODS Rats were randomly divided into 2 groups: (1) controls; and (2) silicosis. Rats in the silicosis group were killed at 4, 8, 12, 16, 24 h, 3, 7, 14, 21, and 28 days. Hematoxylin-eosin (HE) and immunohistochemistry (IHC) were performed to observe the histomorphology of lung tissue. The expression levels of CC16 and SP-D were detected using ELISA kits. In addition, we conducted a population study. Workers who have been selected to work in an iron mine for more than 1 year as research objects. The population was divided into four groups: silicosis exposure group (workers exposed to silica dust for more than 1 year in an iron mine were selected); patients group (silicosis patients); observation group (evidence of disease not meeting formal diagnostic criteria) and control group. Both the levels of trace silicon in the urine and blood of rats and human subjects were measured with ICP-MS. RESULTS Serum levels of silicon were immediately increased in rats exposed to silicon dust. Similarly, our population study revealed that the silicon level in the silica exposure group and the observing group (exposed but no obvious symptoms) were significantly increased over that of the control group (P < 0.05). In subjects with extended exposure to silica, the serum and urine silicon level in exposed workers appeared to rapidly increase, reaching its peak in 1-5 years, followed by a gradual decline thereafter. Workers exposed to dust for less than 10 years were divided into subgroups by 2-year limit. The levels of serum silicon, urine silicon, TGF-β1, and TNF-α were significantly higher than that of control group. CONCLUSION Changes of the serum levels of silicon occurred earlier than the expression of cytokines such as TNF-α, TGF-β1, CC16, and SP-D. The level of silicon in workers rapidly increased after exposure to silica, and the change occurred before the expression of TGF-β1 and TNF-α. As a whole, the findings suggest that determining the level of silicon in vivo might be an effective exposure marker in the diagnosis and pathogenesis of silicosis.
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Affiliation(s)
- Hongli Wang
- School of Public Health, North China University of Science and Technology, Tangshan, 063210, China
- Hebei Key Laboratory of Organ Fibrosis, North China University of Science and Technology, Tangshan, 063210, China
| | - Jie Cui
- School of Public Health, North China University of Science and Technology, Tangshan, 063210, China
| | - Xiaohui Hao
- School of Public Health, North China University of Science and Technology, Tangshan, 063210, China
- Hebei Key Laboratory of Organ Fibrosis, North China University of Science and Technology, Tangshan, 063210, China
| | - Lingli Guo
- School of Public Health, North China University of Science and Technology, Tangshan, 063210, China
- Hebei Key Laboratory of Organ Fibrosis, North China University of Science and Technology, Tangshan, 063210, China
| | - Jinyuan Zhao
- The Occupational Medicine Research Center, Peking University Third Hospital, Beijing, 100191, China
| | - Ruimin Wang
- School of Public Health, North China University of Science and Technology, Tangshan, 063210, China
- Hebei Key Laboratory of Organ Fibrosis, North China University of Science and Technology, Tangshan, 063210, China
| | - Heliang Liu
- School of Public Health, North China University of Science and Technology, Tangshan, 063210, China.
- Hebei Key Laboratory of Organ Fibrosis, North China University of Science and Technology, Tangshan, 063210, China.
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Almuntashiri S, James C, Wang X, Siddiqui B, Zhang D. The Potential of Lung Epithelium Specific Proteins as Biomarkers for COVID-19-Associated Lung Injury. Diagnostics (Basel) 2021; 11:diagnostics11091643. [PMID: 34573984 PMCID: PMC8469873 DOI: 10.3390/diagnostics11091643] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/25/2021] [Accepted: 09/07/2021] [Indexed: 02/07/2023] Open
Abstract
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection was first reported in Wuhan, China, and was declared a pandemic by the World Health Organization (WHO) on 20 March 2020. The respiratory system is the major organ system affected by COVID-19. Numerous studies have found lung abnormalities in patients with COVID-19, including shortness of breath, respiratory failure, and acute respiratory distress syndrome. The identification of lung-specific biomarkers that are easily measurable in serum would be valuable for both clinicians and patients with such conditions. This review is focused on the pneumoproteins and their potential to serve as biomarkers for COVID-19-associated lung injury, including Krebs von den Lungen-6 (KL-6), surfactant proteins (SP-A, SP-B, SP-C, SP-D), and Clara cell secretory protein (CC16). The current findings indicate the aforementioned pneumoproteins may reflect the severity of pulmonary manifestations and could serve as potential biomarkers in COVID-19-related lung injury.
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Affiliation(s)
- Sultan Almuntashiri
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA 30912, USA; (S.A.); (X.W.)
- Department of Clinical Pharmacy, College of Pharmacy, University of Hail, Hail 55473, Saudi Arabia
| | - Chelsea James
- College of Pharmacy, University of Georgia, Augusta, GA 30912, USA;
| | - Xiaoyun Wang
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA 30912, USA; (S.A.); (X.W.)
| | - Budder Siddiqui
- Division of Infectious Diseases, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA;
| | - Duo Zhang
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA 30912, USA; (S.A.); (X.W.)
- Vascular Biology Center, Augusta University, Augusta, GA 30912, USA
- Correspondence: ; Tel.: +1-706-721-6491; Fax: +1-706-721-3994
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21
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Veerapaneni VV, Upadhyay S, Thimraj TA, Siddaiah JB, Krishnarao CS, Lokesh KS, Thimmulappa R, Palmberg L, Ganguly K, Anand MP. Circulating Secretoglobin Family 1A Member 1 (SCGB1A1) Levels as a Marker of Biomass Smoke Induced Chronic Obstructive Pulmonary Disease. Toxics 2021; 9:toxics9090208. [PMID: 34564359 PMCID: PMC8472904 DOI: 10.3390/toxics9090208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/12/2021] [Accepted: 08/14/2021] [Indexed: 11/25/2022]
Abstract
Secretoglobin family 1A member 1 (SCGB1A1) alternatively known as club cell protein 16 is a protective pneumo-protein. Decreased serum levels of SCGB1A1 have been associated with tobacco smoke induced chronic obstructive pulmonary disease (TS-COPD). Exposure to biomass smoke (BMS) is an important COPD risk factor among women in low and lower-middle income countries. Therefore, in a cross-sectional study (n = 50/group; total 200 subjects) we assessed serum SCGB1A1 levels in BMS-COPD subjects (11 male, 39 female) compared to TS-COPD (all male) along with TS-CONTROL (asymptomatic smokers, all male) and healthy controls (29 male, 21 female) in an Indian population. Normal and chronic bronchitis like bronchial mucosa models developed at the air–liquid interface using human primary bronchial epithelial cells (3 donors, and three replicates per donor) were exposed to cigarette smoke condensate (CSC; 0.25, 0.5, and 1%) to assess SCGB1A1 transcript expression and protein secretion. Significantly (p < 0.0001) decreased serum SCGB1A1 concentrations (median, interquartile range, ng/mL) were detected in both BMS-COPD (1.6; 1.3–2.4) and TS-COPD (1.8; 1.4–2.5) subjects compared to TS-CONTROL (3.3; 2.9–3.5) and healthy controls (5.1; 4.5–7.2). The levels of SCGB1A1 were positively correlated (r = 0.7–0.8; p < 0.0001) with forced expiratory volume in 1 s, forced vital capacity, their ratios, and exercise capacity. The findings are also consistent within the BMS-COPD sub-group as well. Significantly (p < 0.03) decreased SCGB1A1 concentrations were detected with severity of COPD, dyspnea, quality of life, and mortality indicators. In vitro studies demonstrated significantly (p < 0.05) decreased SCGB1A1 transcript and/or protein levels following CSC exposure. Circulating SCGB1A1 levels may therefore also be considered as a potent marker of BMS-COPD and warrant studies in larger independent cohorts.
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Affiliation(s)
- Vivek Vardhan Veerapaneni
- Department of Pulmonary Medicine, JSS Medical College and Hospital, JSS Academy of Higher Education and Research, Mysuru 570015, India; (V.V.V.); (J.B.S.); (C.S.K.); (K.S.L.)
| | - Swapna Upadhyay
- Unit of Integrative Toxicology, Institute of Environmental Medicine (IMM), Karolinska Institutet, 17177 Stockholm, Sweden; (S.U.); (T.A.T.); (L.P.)
| | - Tania A. Thimraj
- Unit of Integrative Toxicology, Institute of Environmental Medicine (IMM), Karolinska Institutet, 17177 Stockholm, Sweden; (S.U.); (T.A.T.); (L.P.)
| | - Jayaraj Biligere Siddaiah
- Department of Pulmonary Medicine, JSS Medical College and Hospital, JSS Academy of Higher Education and Research, Mysuru 570015, India; (V.V.V.); (J.B.S.); (C.S.K.); (K.S.L.)
| | - Chaya Sindaghatta Krishnarao
- Department of Pulmonary Medicine, JSS Medical College and Hospital, JSS Academy of Higher Education and Research, Mysuru 570015, India; (V.V.V.); (J.B.S.); (C.S.K.); (K.S.L.)
| | - Komarla Sundararaja Lokesh
- Department of Pulmonary Medicine, JSS Medical College and Hospital, JSS Academy of Higher Education and Research, Mysuru 570015, India; (V.V.V.); (J.B.S.); (C.S.K.); (K.S.L.)
| | - Rajesh Thimmulappa
- Department of Biochemistry, JSS Medical College and Hospital, JSS Academy of Higher Education and Research, Mysuru 570015, India;
| | - Lena Palmberg
- Unit of Integrative Toxicology, Institute of Environmental Medicine (IMM), Karolinska Institutet, 17177 Stockholm, Sweden; (S.U.); (T.A.T.); (L.P.)
| | - Koustav Ganguly
- Unit of Integrative Toxicology, Institute of Environmental Medicine (IMM), Karolinska Institutet, 17177 Stockholm, Sweden; (S.U.); (T.A.T.); (L.P.)
- Correspondence: (K.G.); (M.P.A.)
| | - Mahesh Padukudru Anand
- Department of Pulmonary Medicine, JSS Medical College and Hospital, JSS Academy of Higher Education and Research, Mysuru 570015, India; (V.V.V.); (J.B.S.); (C.S.K.); (K.S.L.)
- Correspondence: (K.G.); (M.P.A.)
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22
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Nikniaz L, Ghojazadeh M, Nateghian H, Nikniaz Z, Farhangi MA, Pourmanaf H. The interaction effect of aerobic exercise and vitamin D supplementation on inflammatory factors, anti-inflammatory proteins, and lung function in male smokers: a randomized controlled trial. BMC Sports Sci Med Rehabil 2021; 13:102. [PMID: 34461991 PMCID: PMC8406718 DOI: 10.1186/s13102-021-00333-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 08/20/2021] [Indexed: 01/26/2023]
Abstract
Background This study aimed to investigate the interaction effect of aerobic exercise and vitamin D supplementation on inflammation (TNF-α, IL-6, CC16, SP-D, and CC16/SP-D ratio) and lung function (FEV1, FVC, and FEV1/FVC ratio) in male smokers.
Methods After applying inclusion criteria, a total of 40 healthy male smokers were recruited in this study. The participants were randomly divided into four groups as follows: Aerobic Exercise + vitamin D Supplementation (AE + VitD, n = 10), Aerobic Exercise (AE, n = 10), vitamin D Supplementation (VitD, n = 10), and Control (C, n = 10). The participants in the AE + VitD and AE groups performed aerobic exercise training (running) up to 50% of the maximum heart rate, three times a week for four weeks. Participants in AE + VitD and VitD groups received 6000 IU/w vitamin D3 for four weeks. The participants in control group did not receive any intervention. Serum tumor necrosis factor (TNF)-α, interleukin (IL)-6, Clara cell protein (CC16), surfactant protein (SP)-D, CC16/SP-D ratio, and lung function (FEV1, FVC, and FEV1/FVC ratio) were measured before and after four weeks of intervention. Results Serum levels of TNF-α, IL-6, and CC16 decreased significantly in AE + VitD, VitD, and AE groups after four weeks (P < 0.05). Serum SP-D level decreased significantly only in the AE + VitD group (P = 0.011). In addition, FEV1 and FVC increased significantly (P < 0.05) in AE + VitD and AE groups after four weeks of intervention. However, the interventions did not have a significant effect on CC16/SP-D ratio and FEV1/FVC ratio (P > 0.05). Furthermore, serum levels of 1,25-dihydroxyvitamin D increased significantly in AE + VitD and VitD groups (P < 0.05) after four weeks of intervention. However, except for TNF-α, between-group comparisons showed no significant differences in levels of IL-6, CC16, SP-D, CC16/SP-D ratio, FEV1, FVC, FEV1/FVC, and 1,25-dihydroxyvitamin D (P > 0.05). Conclusions The results of present study were that aerobic exercise combined with vitamin D supplementation can reduce serum inflammatory factors and anti-inflammatory proteins and improve lung function after four weeks of intervention. Further trials with larger sample size and longer duration are suggested to confirm these results. Trial registration Retrospectively registered. IRCT20180513039637N4. Registration date: 2020/10/20. URL: https://www.irct.ir/search/result?query=IRCT20180513039637N4
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Affiliation(s)
- Leila Nikniaz
- Tabriz Health Services Management Research Center, Health Management and Safety Promotion Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Morteza Ghojazadeh
- Research Center for Evidence-Based Medicine, Iranian EBM Centre: A Joanna Briggs Institute Affiliated Group, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hooman Nateghian
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zeinab Nikniaz
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Hadi Pourmanaf
- Faculty of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.
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23
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Vega-Millán CB, Dévora-Figueroa AG, Burgess JL, Beamer PI, Furlong M, Lantz RC, Meza-Figueroa D, O Rourke MK, García-Rico L, Meza-Escalante ER, Balderas-Cortés JJ, Meza-Montenegro MM. Inflammation biomarkers associated with arsenic exposure by drinking water and respiratory outcomes in indigenous children from three Yaqui villages in southern Sonora, México. Environ Sci Pollut Res Int 2021; 28:34355-34366. [PMID: 33650048 PMCID: PMC7919633 DOI: 10.1007/s11356-021-13070-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 02/16/2021] [Indexed: 06/12/2023]
Abstract
Environmental arsenic exposure in adults and children has been associated with a reduction in the expression of club cell secretory protein (CC16) and an increase in the expression of matrix metalloproteinase-9 (MMP-9), both biomarkers of lung inflammation and negative respiratory outcomes. The objectives of this study were to determine if the levels of serum CC16 and MMP-9 and subsequent respiratory infections in children are associated with the ingestion of arsenic by drinking water. This cross-sectional study included 216 children from three Yaqui villages, Potam, Vicam, and Cocorit, with levels of arsenic in their ground water of 70.01 ± 21.85, 23.3 ± 9.99, and 11.8 ± 4.42 μg/L respectively. Total arsenic in water and urine samples was determined by inductively coupled plasma/optical emission spectrometry. Serum was analyzed for CC16 and MMP-9 using ELISA. The children had an average urinary arsenic of 79.39 μg/L and 46.8 % had levels above of the national concern value of 50 μg/L. Increased arsenic concentrations in drinking water and average daily arsenic intake by water were associated with decreased serum CC16 levels (β = - 0.12, 95% CI - 0.20, - 0.04 and β = - 0.10, 95% CI - 0.18, - 0.03), and increased serum MMP-9 levels (β = 0.35, 95% CI 0.22, 0.48 and β = 0.29, 95% CI 0.18, 0.40) at significant levels (P < 0.05). However, no association was found between levels of these serum biomarkers and urinary arsenic concentrations. In these children, reduced serum CC16 levels were significantly associated with increased risk of respiratory infections (OR = 0.34, 95% CI 0.13, 0.90). In conclusion, altered levels of serum CC16 and MMP-9 in the children may be due to the toxic effects of arsenic exposure through drinking water.
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Affiliation(s)
- Christian B Vega-Millán
- Programa de Doctorado en Ciencias Especialidad en Biotecnología, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, 85000, Cd. Obregón, Sonora, México
| | - Ana G Dévora-Figueroa
- Programa de Doctorado en Ciencias Especialidad en Biotecnología, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, 85000, Cd. Obregón, Sonora, México
| | - Jefferey L Burgess
- Mel & Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ, USA
| | - Paloma I Beamer
- Mel & Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ, USA
| | - Melissa Furlong
- Mel & Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ, USA
| | - R Clark Lantz
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, USA
| | - Diana Meza-Figueroa
- Departamento de Geología, División de Ciencias Exactas y Naturales, Universidad de Sonora, Rosales y Encinas, 83000, Hermosillo, Sonora, México
| | - Mary Kay O Rourke
- Mel & Enid Zuckerman College of Public Health, University of Arizona, Tucson, AZ, USA
| | - Leticia García-Rico
- Centro de Investigación en Alimentación y Desarrollo, A.C., Carretera Gustavo Astiazarán 46, 83304, Hermosillo, Sonora, México
| | - Edna R Meza-Escalante
- Departamento de Recursos Naturales, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, 85000, Cd. Obregón, Sonora, México
| | - José J Balderas-Cortés
- Departamento de Recursos Naturales, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, 85000, Cd. Obregón, Sonora, México
| | - Maria M Meza-Montenegro
- Departamento de Recursos Naturales, Instituto Tecnológico de Sonora, 5 de Febrero 818 Sur, 85000, Cd. Obregón, Sonora, México.
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Johnson MDL, Younis US, Menghani SV, Addison KJ, Whalen M, Pilon AL, Cress AE, Polverino F, Romanoski CE, Kraft M, Martinez FD, Guerra S, Ledford JG. CC16 Binding to α 4β 1 Integrin Protects against Mycoplasma pneumoniae Infection. Am J Respir Crit Care Med 2021; 203:1410-1418. [PMID: 33326355 PMCID: PMC8456541 DOI: 10.1164/rccm.202006-2576oc] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Rationale CC16 (club cell secretory protein) is a pneumoprotein produced predominantly by pulmonary club cells. Circulating CC16 is associated with protection from the inception and progression of the two most common obstructive lung diseases (asthma and chronic obstructive pulmonary disease). Objectives Although exact mechanisms remain elusive, studies consistently suggest a causal role of CC16 in mediating antiinflammatory and antioxidant functions in the lung. We sought to determine any novel receptor systems that could participate in CC16's role in obstructive lung diseases. Methods Protein alignment of CC16 across species led to the discovery of a highly conserved sequence of amino acids, leucine-valine-aspartic acid (LVD), a known integrin-binding motif. Recombinant CC16 was generated with and without the putative integrin-binding site. A Mycoplasma pneumoniae mouse model and a fluorescent cellular adhesion assay were used to determine the impact of the LVD site regarding CC16 function during live infection and on cellular adhesion during inflammatory conditions. Measurements and Main Results CC16 bound to integrin α4β1), also known as the adhesion molecule VLA-4 (very late antigen 4), dependent on the presence of the LVD integrin-binding motif. During infection, recombinant CC16 rescued lung function parameters both when administered to the lung and intravenously but only when the LVD integrin-binding site was intact; likewise, neutrophil recruitment during infection and leukocyte adhesion were both impacted by the loss of the LVD site. Conclusions We discovered a novel receptor for CC16, VLA-4, which has important mechanistic implications for the role of CC16 in circulation as well as in the lung compartment.
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Affiliation(s)
- Michael D L Johnson
- Department of Immunobiology.,Asthma and Airway Disease Research Center, Tucson, Arizona.,BIO5.,Valley Fever Center for Excellence
| | - Usir S Younis
- Asthma and Airway Disease Research Center, Tucson, Arizona
| | | | | | - Michael Whalen
- Asthma and Airway Disease Research Center, Tucson, Arizona
| | | | - Anne E Cress
- Department of Cellular and Molecular Medicine, and
| | - Francesca Polverino
- Asthma and Airway Disease Research Center, Tucson, Arizona.,Department of Medicine, University of Arizona, Tucson, Arizona; and
| | - Casey E Romanoski
- Asthma and Airway Disease Research Center, Tucson, Arizona.,BIO5.,Department of Cellular and Molecular Medicine, and
| | - Monica Kraft
- Asthma and Airway Disease Research Center, Tucson, Arizona.,BIO5.,Department of Medicine, University of Arizona, Tucson, Arizona; and
| | | | - Stefano Guerra
- Asthma and Airway Disease Research Center, Tucson, Arizona.,Department of Medicine, University of Arizona, Tucson, Arizona; and.,ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain
| | - Julie G Ledford
- Department of Immunobiology.,Asthma and Airway Disease Research Center, Tucson, Arizona.,BIO5.,Department of Cellular and Molecular Medicine, and
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25
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Liu M, Lu J, Zhang Q, Zhang Y, Guo Z. Clara cell 16 KDa protein mitigates house dust mite-induced airway inflammation and damage via regulating airway epithelial cell apoptosis in a manner dependent on HMGB1-mediated signaling inhibition. Mol Med 2021; 27:11. [PMID: 33541260 PMCID: PMC7863538 DOI: 10.1186/s10020-021-00277-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 01/27/2021] [Indexed: 12/28/2022] Open
Abstract
Background House dust mite (HDM) inhalation can cause airway epithelial damage which is implicated in the process of airway inflammation in asthma. High mobility group box 1 (HMGB1) is critically required for cellular damage and apoptosis as an important endogenous danger signal. Recently, Clara cell 16KDa protein (CC16) has been identified to exert anti-inflammatory and immunomodulatory influence in various injury-related diseases model. However, little is known about its ability to protect against airway epithelial injury in allergic asthma. This study was aimed to clarify the protective roles of CC16 on airway epithelia in HDM-induced asthma and the regulation of HMGB1 by CC16. Methods Mice were sensitized and challenged by HDM extract and administrated intranasally with CC16 (5 μg/g or 10 μg/g) or saline in the challenged period. The BEAS-2B human airway epithelial cell line were cultured with CC16 or the control vehicle and then exposed to HDM. Knockdown or overexpression of HMGB1 was induced by cell transfection or intratracheal injection of recombinant adenovirus. Results CC16 treatment decreased airway inflammation and histological damage of airway epithelium dose-dependently in HDM-induced asthma model. Airway epithelia apoptosis upon HDM stimulation was noticeably abrogated by CC16 in vivo and in vitro. In addition, upregulation of HMGB1 expression and its related signaling were also detected under HDM conditions, while silencing HMGB1 significantly inhibited the apoptosis of BEAS-2B cells. Furthermore, the activity of HMGB1-mediated signaling was restrained after CC16 treatment whereas HMGB1 overexpression abolished the protective effect of CC16 on HDM-induced airway epithelia apoptosis. Conclusions Our data confirm that CC16 attenuates HDM-mediated airway inflammation and damage via suppressing airway epithelial cell apoptosis in a HMGB1-dependent manner, suggesting the role of CC16 as a potential protective option for HDM-induced asthma.
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Affiliation(s)
- Meixuan Liu
- Shanghai East Clinical Medical College, Nanjing Medical University, Shanghai, 200123, China.,Department of Respiratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200123, China
| | - Jingjing Lu
- Department of Respiratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200123, China
| | - Qian Zhang
- Shanghai East Clinical Medical College, Nanjing Medical University, Shanghai, 200123, China.,Department of Respiratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200123, China
| | - Yunxuan Zhang
- Department of Pharmacy, Huadong Hospital, Fudan University, Shanghai, 200040, China
| | - Zhongliang Guo
- Shanghai East Clinical Medical College, Nanjing Medical University, Shanghai, 200123, China. .,Department of Respiratory Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200123, China.
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26
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Lin J, Li J, Shu M, Wu W, Zhang W, Dou Q, Wu J, Zeng X. The r CC16 Protein Protects Against LPS-Induced Cell Apoptosis and Inflammatory Responses in Human Lung Pneumocytes. Front Pharmacol 2020; 11:1060. [PMID: 32760279 PMCID: PMC7371929 DOI: 10.3389/fphar.2020.01060] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/30/2020] [Indexed: 01/11/2023] Open
Abstract
Objective Our previous clinical study showed that low lung levels of CC16 strongly influence the occurrence and development of ARDS. The aim of the present study was to evaluate the therapeutic effect of rCC16 on LPS-induced inflammation in A549 cells and to determine its mechanism. Methods Cell apoptosis and inflammation was induced by LPS stimulation. The cytotoxic effect of rCC16 was evaluated using the MTT assay. Cytokine levels were determined using enzyme-linked immunosorbent assays. The molecular mechanism of rCC16 was investigated by analyzing relevant signaling pathways. Results The LPS treatment of A549 cells significantly decreased cell viability, increased the levels of the apoptotic proteins Bax, Bak and Cleaved Caspase-3, the secretion of inflammatory cytokines, and the expression levels of TLR4, p-NF/κB, MAPK proteins. While the levels of Bcl-2, p-AKT, p-mTOR, p-ERK1/2, NF/κB, p-AMPK, and p-p38 were significantly decreased in LPS-treated A549 cells. Our experimental results also confirmed that rCC16 inhibited LPS-induced apoptosis, promoted A549 cell proliferation by activating the PI3K/AKT/mTOR/ERK1/2 pathway, and inhibited the release of certain inflammatory factors, especially HMGB1, through dephosphorylation and inactivation of the TLR4/NF-κB/AMPK signaling pathways. Conclusion These results highlight the potential utility of CC16 as an important cytokine for the prevention or treatment of inflammation and show that CC16 may play an important role in the future clinical treatment of ARDS.
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Affiliation(s)
- Jinle Lin
- Department of Emergency Medicine, Shenzhen Baoan First People's Hospital, Nanfang Medical University, Shenzhen, China.,Department of Respiratory and Critical Care Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Science, Guangzhou, China
| | - Jiemei Li
- Center Laboratory of Longhua Branch and Department of Infectious Disease, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
| | - Min Shu
- Emergency Department, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen, China
| | - Weigang Wu
- Center Laboratory of Longhua Branch and Department of Infectious Disease, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China
| | - Wenwu Zhang
- Department of Emergency Medicine, Shenzhen Baoan First People's Hospital, Nanfang Medical University, Shenzhen, China
| | - Qingli Dou
- Department of Emergency Medicine, Shenzhen Baoan First People's Hospital, Nanfang Medical University, Shenzhen, China
| | - Jian Wu
- Department of Respiratory and Critical Care Medicine, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Science, Guangzhou, China
| | - Xiaobin Zeng
- Center Laboratory of Longhua Branch and Department of Infectious Disease, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen, China.,Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Medicine School of Shenzhen University, Shenzhen, China
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27
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Rong B, Fu T, Gao W, Li M, Rong C, Liu W, Liu H. Reduced Serum Concentration of CC16 Is Associated with Severity of Chronic Obstructive Pulmonary Disease and Contributes to the Diagnosis and Assessment of the Disease. Int J Chron Obstruct Pulmon Dis 2020; 15:461-470. [PMID: 32184583 PMCID: PMC7060081 DOI: 10.2147/copd.s230323] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 01/13/2020] [Indexed: 12/20/2022] Open
Abstract
Background The aim of this study was to reveal the correlations between serum concentration of Clara cell secretory protein (CC16) and clinical parameters of stable chronic obstructive pulmonary disease (COPD). Patients and Methods Serum concentration of CC16 was determined by enzyme-linked immunosorbent assay (ELISA). The correlations between serum concentration of CC16 and clinical parameters was performed by linear correlation analysis and multiple linear regression analysis. The sensitivity and specificity of serum CC16 for differential diagnosis of COPD were determined by receiver operator characteristic curve (ROC). Results The serum concentration of CC16 was down-regulated in stable COPD patients compared with healthy control group (p < 0.05). The decreased serum CC16 was negatively related to smoking (p < 0.05), GOLD grading (p < 0.005), mMRC score (p < 0.05) and medical history (p < 0.05) of patients, but positively correlated with pulmonary function (p < 0.05). The smoking, FEV1/FVC values, COPD grading and mMRC scores all affected the concentration of CC16 (p < 0.05). The decreased CC16 was an independent risk factor in the process of deterioration of lung function. The sensitivity and specificity of serum CC16 for identifying COPD reached to 65.3% and 75%. Conclusion Decreased serum concentration of CC16 correlated with the disease progression of COPD, suggesting that it can be used as an indicator contributing to the diagnosis and assessment of COPD.
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Affiliation(s)
- Biaoxue Rong
- Department of Oncology and Gerontology, First Affiliated Hospital, Xi'an Medical University, Xi'an, People's Republic of China
| | - Tian Fu
- Department of Respiratory Medicine, Jining No.1 People's Hospital, Jining, People's Republic of China
| | - Wenlong Gao
- Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, Lanzhou, People's Republic of China
| | - Min Li
- Nursing Department, Binhe New District Branch, Shenmu Hospital, Yulin City, Shaanxi, People's Republic of China
| | - Congxue Rong
- Comprehensive Medical Department, Zhangye Second People Hospital, Zhangye, People's Republic of China
| | - Wen Liu
- Department of Respiratory Medicine, Minqin County People's Hospital, Minqin, People's Republic of China
| | - Hua Liu
- Department of Respiratory Medicine, Gansu Provincial Hospital, Lanzhou, People's Republic of China
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28
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Wang N, Li Q, Liu H, Lin L, Han W, Hao W. Role of C/EBPα hypermethylation in diesel engine exhaust exposure-induced lung inflammation. Ecotoxicol Environ Saf 2019; 183:109500. [PMID: 31450033 DOI: 10.1016/j.ecoenv.2019.109500] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 07/27/2019] [Accepted: 07/30/2019] [Indexed: 06/10/2023]
Abstract
Exposure to diesel engine exhaust (DEE) impairs lung function. But the underlying mechanisms are still not fully understood. The aim of this study was to investigate the effects of long-term DEE exposure on lung inflammation and the underlying mechanisms. Sprague-Dawley male rats were exposed to DEE with 3 mg/m3 of diesel exhaust particles (DEP) for 12 weeks. Then urine, blood, bronchoalveolar lavage fluid (BALF), and lung tissue were collected for the determination of biochemistry indexes, DNA methylation status, and histological changes in the lung. The results showed that the metabolites of polycyclic aromatic hydrocarbons (PAHs) 2-hydroxyphenanthrene (2-OHPh) and 9-OHPh, and 8-hydroxy-2'-deoxyguanosine (8-OHdG), and malondialdehyde (MDA) level were higher in urine of DEE-exposed rats than control group. The level of proinflammatory cytokines IL-8, IL-6, and TNF-α was significantly higher in serum (1.8, 3.5, and nearly 1.0-fold increase, respectively), BALF (2.2, 3.8, and 2.0-fold increase, respectively) and lung tissues (3.5, 4.3, and 2.4-fold increase, respectively) of DEE-exposed rats than control group. While the level of clara cell secretory protein (CC16) and pulmonary surfactant protein D (SP-D) with anti-inflammatory property was obviously lower in serum (reduction of 29% and 38%, respectively), BALF (reduction of 50% and 46%, respectively) and lung tissues (reduction of 50% and 55%, respectively) of DEE-exposed rats than control group. Exposure to DEE also resulted in significant increases in total white blood cell (WBC), neutrophil, eosinophil, and lymphocyte number in BALF. Airway inflammation and remolding were apparent in DEE group. The methylation level of CCAAT/enhancer-binding protein alpha (C/EBPα) promoter was markedly increased (about 3.2-fold increase), and its mRNA and protein expression were significantly decreased (about 62% and 68% decrease, respectively) in the lungs of DEE-exposed rats compared with the group. Further, cell experiments were performed to investigate the relationship between C/EBPα and CC16, and CC16 function under DEP conditions. The results showed that DEP inhibited CC16 expression via methylation of C/EBPα promoter, and the increase of CC16 level significantly relieved the proinflammatory effects caused by DEP exposure. In conclusion, our data indicated that long-term exposure to DEE can cause lung inflammation, at least in part via methylation of C/EBPα promoter, and inhibition of CC16 expression.
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Affiliation(s)
- Ning Wang
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, 266011, China
| | - Qinghai Li
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, 266011, China
| | - Hong Liu
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, 266011, China
| | - Li Lin
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, 266011, China
| | - Wei Han
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, 266011, China.
| | - Wanming Hao
- Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, 266011, China.
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29
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Font-Ribera L, Marco E, Grimalt JO, Pastor S, Marcos R, Abramsson-Zetterberg L, Pedersen M, Grummt T, Junek R, Barreiro E, Heederik D, Spithoven J, Critelli R, Naccarati A, Schmalz C, Zwiener C, Liu J, Zhang X, Mitch W, Gracia-Lavedan E, Arjona L, de Bont J, Tarès L, Vineis P, Kogevinas M, Villanueva CM. Exposure to disinfection by-products in swimming pools and biomarkers of genotoxicity and respiratory damage - The PISCINA2 Study. Environ Int 2019; 131:104988. [PMID: 31323486 DOI: 10.1016/j.envint.2019.104988] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 06/28/2019] [Accepted: 06/30/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Swimming in pools is a healthy activity that entails exposure to disinfection by-products (DBPs), some of which are irritant and genotoxic. OBJECTIVES We evaluated exposure to DBPs during swimming in a chlorinated pool and the association with short-term changes in genotoxicity and lung epithelium permeability biomarkers. METHODS Non-smoker adults (N = 116) swimming 40 min in an indoor pool were included. We measured a range of biomarkers before and at different times after swimming: trihalomethanes (THMs) in exhaled breath (5 min), trichloroacetic acid (TCAA) in urine (30 min), micronuclei in lymphocytes (1 h), serum club cell protein (CC16) (1 h), urine mutagenicity (2 h) and micronuclei in reticulocytes (4 days in a subset, N = 19). Several DBPs in water and trichloramine in air were measured, and physical activity was extensively assessed. We estimated interactions with polymorphisms in genes related to DBP metabolism. RESULTS Median level of chloroform, brominated and total THMs in water was 37.3, 9.5 and 48.5, μg/L, respectively, and trichloramine in air was 472.6 μg/m3. Median exhaled chloroform, brominated and total THMs increased after swimming by 10.9, 2.6 and 13.4, μg/m3, respectively. Creatinine-adjusted urinary TCAA increased by 3.1 μmol/mol. Micronuclei in lymphocytes and reticulocytes, urine mutagenicity and serum CC16 levels remained unchanged after swimming. Spearman correlation coefficients showed no association between DBP exposure and micronuclei in lymphocytes, urine mutagenicity and CC16. Moderate associations were observed for micronuclei in reticulocytes and DBP exposure. CONCLUSIONS The unchanged levels of the short-term effect biomarkers after swimming and null associations with personal estimates of exposure to DBPs suggest no measurable effect on genotoxicity in lymphocytes, urine mutagenicity and lung epithelium permeability at the observed exposure levels. The moderate associations with micronuclei in reticulocytes require cautious interpretation given the reduced sample size.
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Affiliation(s)
- Laia Font-Ribera
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Carlos III Institute of Health, Madrid, Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - Esther Marco
- Institute of Environmental Assessment and Water Research (IDÆA-CSIC), Barcelona, Spain
| | - Joan O Grimalt
- Institute of Environmental Assessment and Water Research (IDÆA-CSIC), Barcelona, Spain
| | - Susana Pastor
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Carlos III Institute of Health, Madrid, Spain; Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | - Ricard Marcos
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Carlos III Institute of Health, Madrid, Spain; Universitat Autònoma de Barcelona (UAB), Barcelona, Spain
| | | | - Marie Pedersen
- Department of Public Health, Section of Epidemiology, University of Copenhagen, Denmark; Danish Cancer Society Research Center, Diet, Genes and Environment, Copenhagen, Denmark
| | | | - Ralf Junek
- German Environment Agency, Bad Elster, Germany
| | - Esther Barreiro
- Universitat Pompeu Fabra (UPF), Barcelona, Spain; Pulmonology Department-Lung Cancer & Muscle Research Group, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain; CIBER de Enfermedades Respiratorias (CIBERES), Barcelona, Spain
| | - Dick Heederik
- Institute for Risk Assessment Sciences (IRAS), Utrecht, the Netherlands
| | - Jack Spithoven
- Institute for Risk Assessment Sciences (IRAS), Utrecht, the Netherlands
| | - Rossana Critelli
- Italian Institute for Genomic Medicine (IIGM), Torino, Italy; Department of Medical Science, University of Turin, Turin, Italy
| | | | - Christina Schmalz
- Environmental Analytical Chemistry, Center for Applied Geoscience, University of Tübingen, Tübingen, Germany
| | - Christian Zwiener
- Environmental Analytical Chemistry, Center for Applied Geoscience, University of Tübingen, Tübingen, Germany
| | - Jiaqi Liu
- Department of Civil and Environmental Engineering, Hong Kong University of Science and Technology, Hong Kong, China
| | - Xiangru Zhang
- Department of Civil and Environmental Engineering, Hong Kong University of Science and Technology, Hong Kong, China
| | - William Mitch
- Department of Civil and Environmental Engineering, Stanford University, Palo Alto, CA, USA
| | - Esther Gracia-Lavedan
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Carlos III Institute of Health, Madrid, Spain
| | - Lourdes Arjona
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Carlos III Institute of Health, Madrid, Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - Jeroen de Bont
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Carlos III Institute of Health, Madrid, Spain
| | - Lluïsa Tarès
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Carlos III Institute of Health, Madrid, Spain
| | - Paolo Vineis
- School of Public Health, Imperial College London, UK
| | - Manolis Kogevinas
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Carlos III Institute of Health, Madrid, Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - Cristina M Villanueva
- ISGlobal, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Carlos III Institute of Health, Madrid, Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain.
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Janicova A, Becker N, Xu B, Wutzler S, Vollrath JT, Hildebrand F, Ehnert S, Marzi I, Störmann P, Relja B. Endogenous Uteroglobin as Intrinsic Anti-inflammatory Signal Modulates Monocyte and Macrophage Subsets Distribution Upon Sepsis Induced Lung Injury. Front Immunol 2019; 10:2276. [PMID: 31632392 PMCID: PMC6779999 DOI: 10.3389/fimmu.2019.02276] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/09/2019] [Indexed: 12/12/2022] Open
Abstract
Sepsis is a serious clinical condition which can cause life-threatening organ dysfunction, and has limited therapeutic options. The paradigm of limiting excessive inflammation and promoting anti-inflammatory responses is a simplified concept. Yet, the absence of intrinsic anti-inflammatory signaling at the early stage of an infection can lead to an exaggerated activation of immune cells, including monocytes and macrophages. There is emerging evidence that endogenous molecules control those mechanisms. Here we aimed to identify and describe the dynamic changes in monocyte and macrophage subsets and lung damage in CL57BL/6N mice undergoing blunt chest trauma with subsequent cecal ligation and puncture. We showed that early an increase in systemic and activated Ly6C+CD11b+CD45+Ly6G- monocytes was paralleled by their increased emigration into lungs. The ratio of pro-inflammatory Ly6ChighCD11b+CD45+Ly6G- to patrolling Ly6ClowCD11b+CD45+Ly6G- monocytes significantly increased in blood, lungs and bronchoalveolar lavage fluid (BALF) suggesting an early transition to inflammatory phenotypes during early sepsis development. Similar to monocytes, the level of pro-inflammatory Ly6ChighCD45+F4/80+ macrophages increased in lungs and BALF, while tissue repairing Ly6ClowCD45+F4/80+ macrophages declined in BALF. Levels of inflammatory mediators TNF-α and MCP-1 in blood and RAGE in lungs and BALF were elevated, and besides their boosting of inflammation via the recruitment of cells, they may promote monocyte and macrophage polarization, respectively, toward the pro-inflammatory phenotype. Neutralization of uteroglobin increased pro-inflammatory cytokine levels, activation of inflammatory phenotypes and their recruitment to lungs; concurrent with increased pulmonary damage in septic mice. In in vitro experiments, the influence of uteroglobin on monocyte functions including migratory behavior, TGF-β1 expression, cytotoxicity and viability were proven. These results highlight an important role of endogenous uteroglobin as intrinsic anti-inflammatory signal upon sepsis-induced early lung injury, which modules the early monocyte/macrophages driven inflammation. Short Summary Blunt chest injury is the third largest cause of death following major trauma, and ongoing excessive pro-inflammatory immune response entails high risk for the development of secondary complications, such as sepsis, with limited therapeutic options. In murine double hit trauma consisting of thoracic trauma and subsequent cecal ligation and puncture, we investigated the cytokine profile, pulmonary epithelial integrity and phenotypic shift of patrolling Ly6ClowCD11b+CD45+Ly6G- monocytes and Ly6ClowCD45+F4/80+ macrophages to pro-inflammatory Ly6ChighCD11b+CD45+Ly6G- monocytes and Ly6ChighCD45+F4/80+ cells in blood, lungs and bronchoalveolar lavage fluid (BALF). Pro-inflammatory mediators and phenotypes were elevated and uteroglobin neutralization led to further increase. Enhanced total protein levels in BALF suggests leakage of respiratory epithelium. In vitro, uteroglobin inhibited the migratory capacity of monocytes and the TGF-β1 expression without affecting the viability. These results highlight an important role of endogenous uteroglobin as an intrinsic anti-inflammatory signal upon sepsis-induced early lung injury, which modulates the early monocyte/macrophages driven inflammation.
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Affiliation(s)
- Andrea Janicova
- Department of Trauma, Hand and Reconstructive Surgery, Goethe University, Frankfurt, Germany.,Department of Aquatic Ecotoxicology, Goethe University, Frankfurt, Germany.,Department of Radiology and Nuclear Medicine, Experimental Radiology, Otto-von-Guericke University, Magdeburg, Germany
| | - Nils Becker
- Department of Trauma, Hand and Reconstructive Surgery, Goethe University, Frankfurt, Germany
| | - Baolin Xu
- Department of Trauma, Hand and Reconstructive Surgery, Goethe University, Frankfurt, Germany
| | - Sebastian Wutzler
- Orthopedic and Trauma Surgery, Helios Horst Schmidt Clinic, Wiesbaden, Germany
| | - Jan Tilmann Vollrath
- Department of Trauma, Hand and Reconstructive Surgery, Goethe University, Frankfurt, Germany
| | | | - Sabrina Ehnert
- Department of Trauma and Reconstructive Surgery, Siegfried Weller Research Institute, BG Trauma Center Tuebingen, Eberhard Karls University Tuebingen, Tuebingen, Germany
| | - Ingo Marzi
- Department of Trauma, Hand and Reconstructive Surgery, Goethe University, Frankfurt, Germany
| | - Philipp Störmann
- Department of Trauma, Hand and Reconstructive Surgery, Goethe University, Frankfurt, Germany
| | - Borna Relja
- Department of Trauma, Hand and Reconstructive Surgery, Goethe University, Frankfurt, Germany
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31
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Störmann P, Becker N, Vollrath JT, Köhler K, Janicova A, Wutzler S, Hildebrand F, Marzi I, Relja B. Early Local Inhibition of Club Cell Protein 16 Following Chest Trauma Reduces Late Sepsis-Induced Acute Lung Injury. J Clin Med 2019; 8:E896. [PMID: 31234556 DOI: 10.3390/jcm8060896] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/11/2019] [Accepted: 06/18/2019] [Indexed: 12/22/2022] Open
Abstract
Blunt thoracic trauma (TxT) deteriorates clinical post-injury outcomes. Ongoing inflammatory changes promote the development of post-traumatic complications, frequently causing Acute Lung Injury (ALI). Club Cell Protein (CC)16, a pulmonary anti-inflammatory protein, correlates with lung damage following TxT. Whether CC16-neutralization influences the inflammatory course during ALI is elusive. Ninety-six male CL57BL/6N mice underwent a double hit model of TxT and cecal ligation puncture (CLP, 24 h post-TxT). Shams underwent surgical procedures. CC16 was neutralized by the intratracheal application of an anti-CC16-antibody, either after TxT (early) or following CLP (late). Euthanasia was performed at 6 or 24 h post-CLP. Systemic and pulmonary levels of IL-6, IL-1β, and CXCL5 were determined, the neutrophils were quantified in the bronchoalveolar lavage fluid, and histomorphological lung damage was assessed. ALI induced a significant systemic IL-6 increase among all groups, while the local inflammatory response was most prominent after 24 h in the double-hit groups as compared to the shams. Significantly increased neutrophilic infiltration upon double hit was paralleled with the enhanced lung damage in all groups as compared to the sham, after 6 and 24 h. Neutralization of CC16 did not change the systemic inflammation. However, early CC16-neutralization increased the neutrophilic infiltration and lung injury at 6 h post-CLP, while 24 h later, the lung injury was reduced. Late CC16-neutralization increased neutrophilic infiltration, 24 h post-CLP, and was concurrent with an enhanced lung injury. The data confirmed the anti-inflammatory potential of endogenous CC16 in the murine double-hit model of ALI.
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Zhai J, Insel M, Addison KJ, Stern DA, Pederson W, Dy A, Rojas-Quintero J, Owen CA, Sherrill DL, Morgan W, Wright AL, Halonen M, Martinez FD, Kraft M, Guerra S, Ledford JG. Club Cell Secretory Protein Deficiency Leads to Altered Lung Function. Am J Respir Crit Care Med 2019; 199:302-312. [PMID: 30543455 PMCID: PMC6363971 DOI: 10.1164/rccm.201807-1345oc] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 12/07/2018] [Indexed: 01/27/2023] Open
Abstract
RATIONALE CC16 (club cell secretory protein-16), a member of the secretoglobin family, is one of the most abundant proteins in normal airway secretions and has been described as a serum biomarker for obstructive lung diseases. OBJECTIVES To determine whether low CC16 is a marker for airway pathology or is implicated in the pathophysiology of progressive airway damage in these conditions. METHODS Using human data from the birth cohort of the Tucson Children's Respiratory Study, we examined the relation of circulating CC16 levels with pulmonary function and responses to bronchial methacholine challenge from childhood up to age 32 years. In wild-type and CC16-/- mice, we set out to comprehensively examine pulmonary physiology, inflammation, and remodeling in the naive airway. MEASUREMENTS AND MAIN RESULTS We observed that Tucson Children's Respiratory Study participants in the lowest tertile of serum CC16 had significant deficits in their lung function and enhanced airway hyperresponsiveness to methacholine challenge from 11 years throughout young adult life. Similarly, CC16-/- mice had significant deficits in lung function and enhanced airway hyperresponsiveness to methacholine as compared with wild-type mice, which were independent of inflammation and mucin production. As compared with wild-type mice, CC16-/- mice had significantly elevated gene expression of procollagen type I, procollagen type III, and α-smooth muscle actin, areas of pronounced collagen deposition and significantly enhanced smooth muscle thickness. CONCLUSIONS Our findings support clinical observations by providing evidence that lack of CC16 in the lung results in dramatically altered pulmonary function and structural alterations consistent with enhanced remodeling.
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Affiliation(s)
- Jing Zhai
- Asthma and Airway Disease Research Center
| | | | | | | | | | | | | | - Caroline A. Owen
- Brigham and Women’s Hospital/Harvard Medical School, Boston, Massachusetts
| | | | | | | | | | | | - Monica Kraft
- Asthma and Airway Disease Research Center
- Department of Medicine, and
| | - Stefano Guerra
- Asthma and Airway Disease Research Center
- Department of Medicine, and
- ISGlobal, Barcelona, Spain
| | - Julie G. Ledford
- Asthma and Airway Disease Research Center
- Department of Medicine, and
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, Arizona
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Combes A, Dekerle J, Dumont X, Twomey R, Bernard A, Daussin F, Bougault V. Continuous exercise induces airway epithelium damage while a matched-intensity and volume intermittent exercise does not. Respir Res 2019; 20:12. [PMID: 30654798 PMCID: PMC6337858 DOI: 10.1186/s12931-019-0978-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 01/06/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND While continuous exercise (CE) induces greater ventilation ([Formula: see text]E) when compared to intermittent exercise (IE), little is known of the consequences on airway damage. Our aim was to investigate markers of epithelial cell damage - i.e. serum levels of CC16 and of the CC16/SP-D ratio - during and following a bout of CE and IE of matched work. METHODS Sixteen healthy young adults performed a 30-min continuous (CE) and a 60-min intermittent exercise (IE; 1-min work: 1-min rest) on separate occasions in a random order. Intensity was set at 70% of their maximum work rate (WRmax). Heart rate (HR) and [Formula: see text]E were measured throughout both tests. Blood samples were taken at rest, after the 10th min of the warm-up, at the end of both exercises, half way through IE (matched time but 50% work done for IE) as well as 30- and 60-min post-exercise. Lactate and CC16 and SP-D were determined. RESULTS Mean [Formula: see text]E was higher for CE compared to IE (85 ± 17 l.min- 1 vs 50 ± 8 l.min- 1, respectively; P < 0.001). Serum-based markers of epithelial cell damage remained unchanged during IE. Interaction of test × time was observed for SP-D (P = 0.02), CC16 (μg.l- 1) (P = 0.006) and CC16/SP-D ratio (P = 0.03). Maximum delta CC16/SP-D was significantly correlated with mean [Formula: see text]E sustained (r = 0.83, P < 0.001) during CE but not during IE. CONCLUSION The 30-min CE performed at 70% WRmax induced mild airway damage, while a time- or work-matched IE did not. The extent of the damage during CE was associated with the higher ventilation rate.
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Affiliation(s)
- Adrien Combes
- URePSSS, Unité de Recherche Pluridisciplinaire Sport, Santé, Société, Lille, France
| | - Jeanne Dekerle
- Fatigue and Exercise Laboratory, Centre for Sport Exercise Science and Medicine (SESAME), University of Brighton, Eastbourne, UK
| | - Xavier Dumont
- Louvain Center of Toxicology and Applied Pharmacology, Catholic University of Louvain, Brussels, Belgium
| | - Rosie Twomey
- Fatigue and Exercise Laboratory, Centre for Sport Exercise Science and Medicine (SESAME), University of Brighton, Eastbourne, UK
| | - Alfred Bernard
- Louvain Center of Toxicology and Applied Pharmacology, Catholic University of Louvain, Brussels, Belgium
| | - Frédéric Daussin
- URePSSS, Unité de Recherche Pluridisciplinaire Sport, Santé, Société, Lille, France
| | - Valérie Bougault
- URePSSS, Unité de Recherche Pluridisciplinaire Sport, Santé, Société, Lille, France. .,LAMHESS, Université Côte d'Azur, Nice, France. .,Eurasport, 413 Avenue Eugène Avinée, 59120, Loos, France.
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Leite MR, Zanetta DMT, Antonangelo L, Marçal LJ, Ramos D, Almeida Burdmann E, Paula Santos U. Burnt sugarcane harvesting work: effects on pulmonary and systemic inflammatory markers. Inhal Toxicol 2018; 30:205-212. [PMID: 30328727 DOI: 10.1080/08958378.2018.1494765] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Objective: To evaluate the effects of burnt sugarcane harvesting on the plasmatic and urinary concentrations of the club cell secretory protein (CC16) and inflammatory systemic biomarkers in a group of sugarcane cutters. Methods: Seventy-eight sugar cane workers were evaluated. The plasmatic and urinary concentrations of CC16, a pulmonary damage marker and inflammatory systemic biomarkers were collected at three time points: before, three months after and six months after the onset of the burnt sugarcane harvesting period. All evaluations were performed at ∼7 am, before the daily work shift. In the three-month evaluation, a post-work shift assessment (acute effect) was also performed. Results: The age of the workers was 37.9 ± 11.0 years. The PM2.5 concentrations were 27.0 (23.0-33.0) and 101.0 (31.0-139.5) µg/m3 in the pre harvest and harvest periods, respectively (p < .001). Burnt sugarcane harvesting was associated with a reduction, throughout the work during burnt sugarcane harvesting (subchronic effect), in plasmatic and urinary CC16 concentrations. Acutely, there was a decrease in plasmatic concentrations. There were acute and subchronic increases in inflammatory markers (neutrophils, monocytes) and muscle damage markers (CK and LDH) and a decrease in red blood cells. Conclusions: Harvesting of burnt sugarcane was associated with acute and subchronic reductions in the plasmatic and urinary concentrations of CC16 protein and changes in systemic inflammatory markers.
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Affiliation(s)
- Marceli Rocha Leite
- a Divisao de Pneumologia , Instituto do Coracao, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo , São Paulo , Brazil
| | | | - Leila Antonangelo
- c Laboratório de Investigação Médica 03 (LIM-03) - Departamento de Patologia, da Faculdade de Medicina FMUSP , Universidade de São Paulo , São Paulo , Brazil
| | - Lia Junqueira Marçal
- c Laboratório de Investigação Médica 03 (LIM-03) - Departamento de Patologia, da Faculdade de Medicina FMUSP , Universidade de São Paulo , São Paulo , Brazil
| | - Dionei Ramos
- d Department of Physiotherapy , Universidade Estadual Paulista "Júlio de Mesquita Filho" Campus de Presidente Prudente , São Paulo , Brazil
| | - Emmanuel Almeida Burdmann
- e Laboratório de Investigação Médica 12 (LIM-12), Divisão de Nefrologia, Hospital das Clinicas HCFMUSP, Faculdade de Medicina , Universidade de São Paulo , São Paulo , Brazil
| | - Ubiratan Paula Santos
- f Divisão de Pneumologia , Instituto do Coracao, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de São Paulo , São Paulo , Brazil
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Castro-Rodriguez J, Atton I, Villarroel G, Serrano C. Relation between serum CC16 levels and asthma predictive index in pre-schoolers with recurrent wheezing. Allergol Immunopathol (Madr) 2018; 46:460-466. [PMID: 29685782 DOI: 10.1016/j.aller.2017.09.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 09/13/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Low levels of serum CC16 were reported in asthmatic adults, but the studies on children were scarce and conflicting. The aim of this study was to compare serum CC16 levels in pre-school children with recurrent wheezing assessed using an asthma predictive index (API). METHODS We performed a case-control study based on API, with all enrolled pre-school children who had recurrent wheezing episodes (>3 episodes/last year confirmed by a physician) and had presented at one paediatric clinic in Santiago, Chile. The population was divided according to stringent API criteria into positive or negative. RESULTS In a one-year period, 60 pre-schoolers were enrolled. After excluding 12, 48 pre-schoolers remained (27 males, age range from 24 to 71 months) and completed the study; 34 were API positive and 14 were API negative. There were no significant differences in demographics between groups. The level of serum CC16 levels for pre-schoolers with a positive API and negative API were (median 9.2 [7.1-11.5] and 9.4 [5.5-10], p=0.26, respectively). The area under the curve for the serum CC16 levels to predict a positive API was 0.6, 95% CI [0.43-0.77], p=0.3. A correlation between serum CC16 levels and age was found (r=0.36 [0.07-0.59], p=0.01], but not between serum CC16 levels and peripheral eosinophils blood. CONCLUSION There was no evidence that serum CC16 levels played a role in recurrent wheezing and a positive API in pre-school children. More studies are needed to confirm this finding.
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Zhou Y, Bao WW, Qian ZM, Dee Geiger S, Parrish KL, Yang BY, Lee YL, Dong GH. Perfluoroalkyl substance exposure and urine CC16 levels among asthmatics: A case-control study of children. Environ Res 2017; 159:158-163. [PMID: 28802206 DOI: 10.1016/j.envres.2017.08.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 07/08/2017] [Accepted: 08/03/2017] [Indexed: 05/21/2023]
Abstract
BACKGROUND Studies have reported an association between serum perfluoroalkyl substances (PFASs) and asthma. However, few studies have examined the possible associations between PFASs and the 16-kDa club cell secretory protein (Clara) (CC16) level, a prominent biomarker of asthma, among adolescents. METHODS We recruited a total of 231 asthmatic children and 225 non-asthmatic controls in the Genetic and Biomarkers study for Childhood Asthma (GBCA) in northern Taiwan from 2009 to 2010. Structured questionnaires were administered by face-to-face interview. Urine CC16 was determined by an enzyme-link immunoassay kit. Multiple general linear models were employed to examine the associations between PFASs and urinary CC16 levels. RESULTS Asthmatic participants had significantly higher serum PFAS concentrations overall than the healthy controls. After adjusting for confounding factors, urinary CC16 was significantly, negatively associated with PFASs, especially PFOS, PFOA, PFDA and PFNA, and especially among males, as follows: PFOS (β = -0.003, 95% confidence interval [CI]: -0.004, -0.002), PFOA (β = -0.045, 95% CI: -0.086, -0.004), and PFHxA (β = -0.310, 95% CI: -0.455, -0.165) among asthmatic boys, and PFDA (β = -0.126, 95%CI: -0.241, -0.012) and PFNA (β = -0.329, 95% CI: -0.526, -0.132) among non-asthmatic boys. Among girls, PFDA (β = -0.088, 95% CI: -0.172, -0.004), was the only PFAS significantly associated with CC16. Significant interaction effects (p < 0.15) on CC16 levels were found between asthma and PFOS, PFOA, PFBS and PFHxA in all participants. CONCLUSION Our overall results showed that serum PFASs were significantly, inversely associated with CC16 levels. Associations were stronger among males.
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Affiliation(s)
- Yang Zhou
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Wen-Wen Bao
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Zhengmin Min Qian
- Department of Epidemiology, College for Public Health and Social Justice, Saint Louis University, Saint Louis 63104, USA
| | - Sarah Dee Geiger
- School of Nursing and Health Studies, Northern Illinois University, DeKalb, IL 60115, USA
| | - Katelyn L Parrish
- Department of Epidemiology, College for Public Health and Social Justice, Saint Louis University, Saint Louis 63104, USA
| | - Bo-Yi Yang
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Yungling Leo Lee
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei 100, Taiwan.
| | - Guang-Hui Dong
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
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Wen MN, Zhao G, Zhang JY, Zhao YH. Clinical study on the changes of lung-specific proteins: CC16 after lung contusion. Exp Ther Med 2017; 14:2733-2736. [PMID: 28962220 PMCID: PMC5609254 DOI: 10.3892/etm.2017.4842] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 05/12/2017] [Indexed: 11/25/2022] Open
Abstract
The aim of the present study was to examine the clinical value of continuously monitoring serum CC16 levels in diagnosing pulmonary contusion, estimating its severity degree and predicting disease progression. Thirty-one acute trauma patients with lung contusion diagnosed by chest computed tomography (CT) were included, and chest CT was re-examined on day 1, 3 and 7 after injury. Calculating all the contusion volume by the Siemens syngo volume calculation program, complications such as pleural effusion or atelectasis were observed and recorded. ELISA was employed to measure the levels of CC16 in all the patients for seven days, and another 15 serum samples were obtained from healthy volunteers to provide the reference value. Correlation analysis was further conducted for the CC16 levels and pulmonary contusion volume and its variations. Serum concentrations of CC16 in all the lung contusion patients were significantly higher than those in the controls, and reached a peak value on the first day. However, the contusion damage area shown in CT gradually increased with the occurrence of atelectasis and pleural effusion. The maximum volume of lung contusion had a positive correlation to the initial and average concentrations of CC16, and changes in the contusion volume were positively correlated with the initial concentration. The increased concentration of CC16 after lung contusion is an important reference for diagnosis, and may portend the possibility of further progress, while continuously monitoring CC16 serum levels in patients may provide the basis for clinical decision-making.
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Affiliation(s)
- Meng-Ni Wen
- Department of Emergency, The Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Gang Zhao
- Department of Emergency, The Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Jia-Ying Zhang
- Department of Radiology, The Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Yong-Hong Zhao
- Department of Thoracic Surgery, The Affiliated Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai 200233, P.R. China
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Yu M, Lou J, Xia H, Zhang M, Zhang Y, Chen J, Zhang X, Ying S, Zhu L, Liu L, Jia G. Global DNA hypomethylation has no impact on lung function or serum inflammatory and fibrosis cytokines in asbestos-exposed population. Int Arch Occup Environ Health 2017; 90:265-74. [PMID: 28105512 DOI: 10.1007/s00420-017-1195-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 01/02/2017] [Indexed: 12/19/2022]
Abstract
PURPOSE To examine the effect of asbestos exposure on global DNA methylation and determine whether lung function and inflammatory and fibrosis biomarkers are correlated with the methylation state. METHODS A total of 26 healthy subjects without asbestos exposure (Group 1), 47 healthy subjects with exposure (Group 2), and 52 subjects with benign asbestos-related disorders (ARDs) (Group 3) participated in this cross-sectional study. Blood global 5-methylcytosine (5mC) and serum TNF-α, collagen IV, CCL5 and CC16 concentrations were analyzed using enzyme-linked immunosorbent assay-like assays. Spirometric maneuvers were performed to assess lung function. RESULTS Decreased 5mC levels were observed in Groups 2 and 3 compared to Group 1, irrespective of lung function (p < 0.01). There was no significant change in 5mC between Groups 2 and 3. Overall, 5mC was negatively correlated with CCL5 and collagen IV (p < 0.05), but no significant inverse relationship was found between 5mC and CCL5 or collagen IV in each group. Additionally, both 5mC and CC16 were inversely associated with FEV1/FVC% (p = 0.001, adjusted R 2 = 0.145) for non-smokers, and consistently significant inverse relationships were found between CC16 and FEV1/FVC%, independent of asbestos exposure. CONCLUSIONS Asbestos exposure causes global DNA hypomethylation. DNA hypomethylation has no influence on serum biomarkers and lung function in asbestos-exposed population with or without pleural and pulmonary parenchymal abnormalities.
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Boukelia B, Fogarty MC, Davison RCR, Florida-James GD. Diurnal physiological and immunological responses to a 10-km run in highly trained athletes in an environmentally controlled condition of 6 °C. Eur J Appl Physiol 2016; 117:1-6. [PMID: 27830328 PMCID: PMC5306325 DOI: 10.1007/s00421-016-3489-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Accepted: 10/13/2016] [Indexed: 11/15/2022]
Abstract
Purpose The Clara cell protein CC16, secreted from Clara cells in the lung, is discussed as a potential biomarker for toxic effects on the airways. An increased concentration of CC16 in serum may be caused by increased permeability of the lungs. To investigate the changes in P-CC16 in response to an intense exercise bout performed at different times of day (9 am and 4 pm) of highly trained individuals. Method Using a crossover randomized design, 8 runners (mean VO2max 71 ml kg−1 min−1, SD 6) performed a 10-km time trial run, at 9 am and 4 pm, in an environmental chamber set at 6 °C. Lung function tests and blood sampling occurred at baseline, immediately post and 1 h post time trial. Result Diurnal differences (P < 0.05) were found for blood neutrophil and lymphocyte counts; with higher values at 4 pm. P-CC16 was higher at the pre- and post-trial time point at 9 am compared to 4 pm. Lung function was not different between or within trials. Conclusion Morning trial in cold condition caused more physiological strain compared to the same trial in the evening. However, this extra stress caused by zeitgebers could be a useful strategy for athletes, coaches, and general population to improve their running performance and protect their health in cold conditions in the long-term plan.
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Affiliation(s)
- Boukhemis Boukelia
- School of Applied Sciences, Edinburgh Napier University, Sighthill Campus, Sighthill Court, Edinburgh, EH11 4BN, UK.
| | - M C Fogarty
- Department of Sport, Health and Exercise Science, University of Hull, Cottingham Road, Kingston-upon-Hull, UK
| | - R C R Davison
- Institute of Clinical Exercise and Health Science, University of the West of Scotland, Paisley, UK
| | - G D Florida-James
- School of Applied Sciences, Edinburgh Napier University, Sighthill Campus, Sighthill Court, Edinburgh, EH11 4BN, UK
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Beamer PI, Klimecki WT, Loh M, Van Horne YO, Sugeng AJ, Lothrop N, Billheimer D, Guerra S, Lantz RC, Canales RA, Martinez FD. Association of Children's Urinary CC16 Levels with Arsenic Concentrations in Multiple Environmental Media. Int J Environ Res Public Health 2016; 13:E521. [PMID: 27223295 PMCID: PMC4881146 DOI: 10.3390/ijerph13050521] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 05/06/2016] [Accepted: 05/16/2016] [Indexed: 02/08/2023]
Abstract
Arsenic exposure has been associated with decreased club cell secretory protein (CC16) levels in adults. Further, both arsenic exposure and decreased levels of CC16 in childhood have been associated with decreased adult lung function. Our objective was to determine if urinary CC16 levels in children are associated with arsenic concentrations in environmental media collected from their homes. Yard soil, house dust, and tap water were taken from 34 homes. Urine and toenail samples were collected from 68 children. All concentrations were natural log-transformed prior to data analysis. There were associations between urinary CC16 and arsenic concentration in soil (b = -0.43, p = 0.001, R² = 0.08), water (b = -0.22, p = 0.07, R² = 0.03), house dust (b = -0.37, p = 0.07, R² = 0.04), and dust loading (b = -0.21, p = 0.04, R² = 0.04). In multiple analyses, only the concentration of arsenic in soil was associated with urinary CC16 levels (b = -0.42, p = 0.02, R² = 0.14 (full model)) after accounting for other factors. The association between urinary CC16 and soil arsenic may suggest that localized arsenic exposure in the lungs could damage the airway epithelium and predispose children for diminished lung function. Future work to assess this possible mechanism should examine potential associations between airborne arsenic exposures, CC16 levels, lung function, and other possible confounders in children in arsenic-impacted communities.
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Affiliation(s)
- Paloma I Beamer
- Asthma and Airways Disease Research Center, University of Arizona, 1501 N. Campbell Ave., Tucson, AZ 85724, USA.
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., Tucson, AZ 85724, USA.
- Department of Chemical and Environmental Engineering, University of Arizona, 1133 E. James E. Rogers Way, Tucson, AZ 85721, USA.
| | - Walter T Klimecki
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., Tucson, AZ 85724, USA.
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, P.O. Box 210207, Tucson, AZ 85724, USA.
| | - Miranda Loh
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., Tucson, AZ 85724, USA.
- Institute of Occupational Medicine, Research Avenue North, Riccarton, Edinburgh EH14 4AP, UK.
| | - Yoshira Ornelas Van Horne
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., Tucson, AZ 85724, USA.
| | - Anastasia J Sugeng
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., Tucson, AZ 85724, USA.
| | - Nathan Lothrop
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., Tucson, AZ 85724, USA.
| | - Dean Billheimer
- Asthma and Airways Disease Research Center, University of Arizona, 1501 N. Campbell Ave., Tucson, AZ 85724, USA.
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., Tucson, AZ 85724, USA.
| | - Stefano Guerra
- Asthma and Airways Disease Research Center, University of Arizona, 1501 N. Campbell Ave., Tucson, AZ 85724, USA.
| | - Robert Clark Lantz
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., Tucson, AZ 85724, USA.
- Department of Cellular and Molecular Medicine, University of Arizona, P.O. Box 245044, Tucson, AZ 85724, USA.
| | - Robert A Canales
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., Tucson, AZ 85724, USA.
| | - Fernando D Martinez
- Asthma and Airways Disease Research Center, University of Arizona, 1501 N. Campbell Ave., Tucson, AZ 85724, USA.
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Laucho-Contreras ME, Polverino F, Tesfaigzi Y, Pilon A, Celli BR, Owen CA. Club Cell Protein 16 ( CC16) Augmentation: A Potential Disease-modifying Approach for Chronic Obstructive Pulmonary Disease (COPD). Expert Opin Ther Targets 2016; 20:869-83. [PMID: 26781659 DOI: 10.1517/14728222.2016.1139084] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
INTRODUCTION Club cell protein 16 (CC16) is the most abundant protein in bronchoalveolar lavage fluid. CC16 has anti-inflammatory properties in smoke-exposed lungs, and chronic obstructive pulmonary disease (COPD) is associated with CC16 deficiency. Herein, we explored whether CC16 is a therapeutic target for COPD. AREAS COVERED We reviewed the literature on the factors that regulate airway CC16 expression, its biologic functions and its protective activities in smoke-exposed lungs using PUBMED searches. We generated hypotheses on the mechanisms by which CC16 limits COPD development, and discuss its potential as a new therapeutic approach for COPD. EXPERT OPINION CC16 plasma and lung levels are reduced in smokers without airflow obstruction and COPD patients. In COPD patients, airway CC16 expression is inversely correlated with severity of airflow obstruction. CC16 deficiency increases smoke-induced lung pathologies in mice by its effects on epithelial cells, leukocytes, and fibroblasts. Experimental augmentation of CC16 levels using recombinant CC16 in cell culture systems, plasmid and adenoviral-mediated over-expression of CC16 in epithelial cells or smoke-exposed murine airways reduces inflammation and cellular injury. Additional studies are necessary to assess the efficacy of therapies aimed at restoring airway CC16 levels as a new disease-modifying therapy for COPD patients.
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Affiliation(s)
- Maria E Laucho-Contreras
- a Division of Pulmonary and Critical Care Medicine , Brigham and Women's Hospital/Harvard Medical School , Boston , MA , USA
| | - Francesca Polverino
- a Division of Pulmonary and Critical Care Medicine , Brigham and Women's Hospital/Harvard Medical School , Boston , MA , USA.,b COPD Program , Lovelace Respiratory Research Institute , Albuquerque , NM , USA.,c Department of Medicine , University of Parma , Parma , Italy
| | - Yohannes Tesfaigzi
- b COPD Program , Lovelace Respiratory Research Institute , Albuquerque , NM , USA
| | - Aprile Pilon
- d Therabron Therapeutics Inc. , Rockville , MD , USA
| | - Bartolome R Celli
- a Division of Pulmonary and Critical Care Medicine , Brigham and Women's Hospital/Harvard Medical School , Boston , MA , USA.,b COPD Program , Lovelace Respiratory Research Institute , Albuquerque , NM , USA
| | - Caroline A Owen
- a Division of Pulmonary and Critical Care Medicine , Brigham and Women's Hospital/Harvard Medical School , Boston , MA , USA.,b COPD Program , Lovelace Respiratory Research Institute , Albuquerque , NM , USA
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Olewicz-Gawlik A, Trzybulska D, Kuznar-Kaminska B, Katulska K, Danczak-Pazdrowska A, Batura-Gabryel H, Hrycaj P. [Serum Clara cell 16-kDa protein ( CC16) levels and lung impairment in systemic sclerosis patients]. Rev Bras Reumatol 2015; 56:S0482-5004(15)00072-8. [PMID: 26239602 DOI: 10.1016/j.rbr.2015.04.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 03/03/2015] [Accepted: 04/30/2015] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE To assess clinical utility of serum Clara cell 16-kDa protein (CC16) measurements in relation with staging system for systemic sclerosis associated interstitial lung disease (SSc-ILD). MATERIALS AND METHODS Serum levels of CC16 were determined by ELISA in 28 SSc patients and 30 healthy controls, and correlated with staging system for SSc-ILD in SSc patients. Lung involvement was assessed functionally (body plethysmography, diffusing capacity of the lung for carbon monoxide) and radiologically (an average disease extent on high resolution computed tomography of the lungs, HRCT) in SSc patients. RESULTS We observed statistically significant differences in serum CC16 levels between SSc patients and healthy controls only in non-smokers. However, serum CC16 concentrations were significantly elevated in patients with HRCT extent>20% in comparison to patients with HRCT extent<20% (p=0.01). They correlated positively with average disease extent on HRCT (p=0.04), an extent of a reticular pattern on HRCT (p<0.01), and negatively with a total lung capacity (TLC) (p=0.03) and the results of the 6-min walk test (p<0.01). CONCLUSIONS CC16 levels can be considered as a supplemental serum biomarker for SSc-ILD.
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Affiliation(s)
- Anna Olewicz-Gawlik
- Departamento de Reumatologia e Imunologia Clínica, Universidade de Ciências Médicas Poznan, Poznan, Polônia.
| | - Dorota Trzybulska
- Departamento de Reumatologia e Imunologia Clínica, Universidade de Ciências Médicas Poznan, Poznan, Polônia
| | - Barbara Kuznar-Kaminska
- Departamento de Pneumologia, Alergologia e Pneumologia Oncológica, Universidade de Ciências Médicas Poznan, Poznan, Polônia
| | - Katarzyna Katulska
- Departamento de Radiologia Geral e Neurorradiologia, Universidade de Ciências Médicas Poznan, Poznan, Polônia
| | | | - Halina Batura-Gabryel
- Departamento de Pneumologia, Alergologia e Pneumologia Oncológica, Universidade de Ciências Médicas Poznan, Poznan, Polônia
| | - Pawel Hrycaj
- Departamento de Reumatologia e Imunologia Clínica, Universidade de Ciências Médicas Poznan, Poznan, Polônia
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Pang M, Wang H, Bai JZ, Cao D, Jiang Y, Zhang C, Liu Z, Zhang X, Hu X, Xu J, Du Y. Recombinant rat CC16 protein inhibits LPS-induced MMP-9 expression via NF-κB pathway in rat tracheal epithelial cells. Exp Biol Med (Maywood) 2015; 240:1266-78. [PMID: 25716019 DOI: 10.1177/1535370215570202] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 12/12/2014] [Indexed: 01/02/2023] Open
Abstract
Clara cell protein (CC16) is a well-known anti-inflammatory protein secreted by the epithelial Clara cells of the airways. It is involved in the development of airway inflammatory diseases such as chronic obstructive pulmonary disease and asthma. Previous studies suggest that CC16 gene transfer suppresses expression of interleukin (IL)-8 in bronchial epithelial cells. However, its role in the function of these cells during inflammation is not well understood. In this study, we evaluated the effect of CC16 on the expression of matrix metalloproteinase (MMP)-9 in lipopolysaccharide (LPS)-stimulated rat tracheal epithelial cells and its underlying molecular mechanisms. We generated recombinant rat CC16 protein (rCC16) which was bioactive in inhibiting the activity of phospholipase A2. rCC16 inhibited LPS-induced MMP-9 expression at both mRNA and protein levels in a concentration-dependent (0-2 µg/mL) manner, as demonstrated by real time RT-PCR, ELISA, and zymography assays. Gene transcription and DNA binding studies demonstrated that rCC16 suppressed LPS-induced NF-κB activation and its binding of gene promoters as identified by luciferase reporter and gel mobility shift assays, respectively. Western blotting and immunofluorescence staining analyses further revealed that rCC16 concentration dependently inhibited the effects of LPS on nuclear increase and cytosol reduction of NF-κB, on the phosphorylation and reduction of NF-κB inhibitory IκBα, and on p38 MAPK-dependent NF-κB activation by phosphorylation at Ser276 of its p65 subunit. These data indicate that inhibition of LPS-mediated NF-κB activation by rCC16 involves both translocation- and phosphorylation-dependent signaling pathways. When the tracheal epithelial cells were pretreated with chlorpromazine, an inhibitor of clathrin-mediated endocytosis, cellular uptake of rCC16 and its inhibition of LPS-induced NF-κB nuclear translocation and also MMP-9 production were significantly abolished. Taken together, our data suggest that clathrin-mediated uptake of rCC16 suppresses LPS-mediated inflammatory MMP-9 production through inactivation of NF-κB and p38 MAPK pathways in tracheal epithelial cells.
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Affiliation(s)
- Min Pang
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Hailong Wang
- Academy of Basic Medicine, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Ji-Zhong Bai
- Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, Auckland 1142, New Zealand
| | - Dawei Cao
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Yi Jiang
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Caiping Zhang
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Zhihong Liu
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Xinri Zhang
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Xiaoyun Hu
- Department of Respiration, the First Hospital, Shanxi Medical University, Taiyuan, Shanxi 030001, China
| | - Jianying Xu
- Department of Respiration, Shanxi Da Yi Hospital, Taiyuan, Shanxi 030032, China
| | - Yongcheng Du
- Department of Respiration, the Provincial People's Hospital of Shanxi Medical University, Taiyuan, Shanxi 030012, China
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Tufvesson E, Svensson H, Ankerst J, Bjermer L. Increase of club cell (Clara) protein ( CC16) in plasma and urine after exercise challenge in asthmatics and healthy controls, and correlations to exhaled breath temperature and exhaled nitric oxide. Respir Med 2013; 107:1675-81. [PMID: 24018107 DOI: 10.1016/j.rmed.2013.08.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 08/02/2013] [Accepted: 08/06/2013] [Indexed: 01/09/2023]
Abstract
Exercise is known to affect the airway epithelium through dehydration, followed by a release of mediators, such as club cell (Clara) protein (CC16). The aim of this study was to follow the CC16 levels at repeated time points in plasma and urine after exercise in asthmatic subjects and controls, and to relate the findings to exhaled breath temperature (EBT) and exhaled nitric oxide (NO). Twenty-two asthmatics and 18 healthy subjects performed an exercise challenge test on a treadmill. Lung function, CC16 in plasma and urine, EBT and fractional exhaled NO were investigated before and repeatedly for 60 min after the exercise. The increase in CC16 concentration in plasma was seen already one minute after exercise (p < 0.001) and increased further after 20 (p = 0.009) until 60 min (p = 0.001). An increase in urinary levels of CC16 peaked after 30 min (p < 0.001), and declined after 60 min but were still higher than baseline (p = 0.002). There were no differences in plasma or urine CC16 levels between asthmatics and controls, but males had higher plasma levels compared to females (p < 0.001) at all time points. EBT peaked at 15 min (p < 0.001) and thereafter declined, and FENO50 (p < 0.0001), alveolar NO concentration (p = 0.049) and bronchial flux of NO (p = 0.0055) decreased after exercise. In conclusion, this study shows that CC16 in plasma increased during 60 min after exercise, not synchronized with CC16 levels in urine. CC16 levels in plasma correlated to EBT and exhaled NO, reflecting an overall epithelial involvement. There was no difference between asthmatics and healthy controls, showing a physiological rather than pathophysiological response.
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Affiliation(s)
- Ellen Tufvesson
- Respiratory Medicine and Allergology, Dept. of Clinical Sciences, Lund University, 221 84 Lund, Sweden.
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Roth FD, Quintar AA, Leimgruber C, García L, Uribe Echevarría EM, Torres AI, Maldonado CA. Restoration of the normal Clara cell phenotype after chronic allergic inflammation. Int J Exp Pathol 2013; 94:399-411. [PMID: 23998365 DOI: 10.1111/iep.12041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 06/15/2013] [Indexed: 12/18/2022] Open
Abstract
Bronchiolar Clara cells play a critical role in lung homoeostasis. The main goal of this study was to evaluate the effects of chronic allergy on these cells and the efficacy of budesonide (BUD) and montelukast (MK) in restoring their typical phenotypes after ovalbumin-induced chronic allergy in mice. Chronic allergy induced extensive bronchiolar Alcian blue-periodic acid-Schiff (AB/PAS)-positive metaplasia. In addition, cells accumulated numerous big electron-lucent granules negative for Clara cell main secretory protein (CC16), and consequently, CC16 was significantly reduced in bronchoalveolar lavage. A concomitant reduction in SP-D and CYP2E1 content was observed. The phenotypic changes induced by allergy were pharmacologically reversed by both treatments; MK was more efficient than BUD in doing so. MK decreased AB/PAS reactivity to control levels whereas they remained persistently elevated after BUD. Moreover, most non-ciliated cells recovered their normal morphology after MK, whereas for BUD normal cells coexisted with 'transitional' cells that contained remnant mucous granules and stained strongly for CC16 and SP-D. Glucocorticoids were also less able to reduce inflammatory infiltration and maintained higher percentage of neutrophils, which may have contributed to prolonged mucin expression. These results show that chronic allergy-induced mucous metaplasia of Clara cells affects their defensive mechanisms. However, anti-inflammatory treatments were able to re-establish the normal phenotype of Clara cell, with MK being more efficient at restoring a normal profile than BUD. This study highlights the role of epithelial cells in lung injuries and their contribution to anti-inflammatory therapies.
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Affiliation(s)
- Felix D Roth
- Centro de Microscopía Electrónica, INICSA-CONICET, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
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Xiao C, Li S, Zhou W, Shang D, Zhao S, Zhu X, Chen K, Wang R. The effect of air pollutants on the microecology of the respiratory tract of rats. Environ Toxicol Pharmacol 2013; 36:588-594. [PMID: 23834961 DOI: 10.1016/j.etap.2013.04.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 04/13/2013] [Accepted: 04/24/2013] [Indexed: 06/02/2023]
Abstract
To study the effect of air pollution on the microecology of the respiratory tracts and the relationship of the biotopes with respiratory diseases, Wistar rats exposed to mixed air pollutants were used as poisoning models. The bacterial floras of respiratory tract were analyzed as well as expression of pro-inflammatory mediators of the respiratory epithelium. The mRNA and protein expression levels of pro-inflammatory factor and cytokines measured showed that there were significant changes in the microbiocenosis of the respiratory tract. The microorganisms underwent quantitative and qualitative changes following exposure to mixed air pollutants including a decline of indigenous microflora and increase of the content of conditionally pathogenic microorganisms. These changes depended on the degree of air pollution severity. Measurement of pro-inflammatory factors CC16, TNF-α and IL-6 revealed a similar time-dependent relationship between the content of conditionally pathogenic microorganisms and the interference of CC16 secretion, as well as up-expression of TNF-α and IL-6.
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Affiliation(s)
- Chunling Xiao
- Department of Pathogen Biology, Shenyang Medical College, No. 146, North Huanghe St, Huanggu Dis, Shenyang City, Liaoning Pro 110034, PR China.
| | - Shuyin Li
- Department of Pathogen Biology, Shenyang Medical College, No. 146, North Huanghe St, Huanggu Dis, Shenyang City, Liaoning Pro 110034, PR China
| | - Weiqiang Zhou
- Department of Pathogen Biology, Shenyang Medical College, No. 146, North Huanghe St, Huanggu Dis, Shenyang City, Liaoning Pro 110034, PR China
| | - Dezhi Shang
- Department of Pathogen Biology, Shenyang Medical College, No. 146, North Huanghe St, Huanggu Dis, Shenyang City, Liaoning Pro 110034, PR China
| | - Su Zhao
- Department of Pathogen Biology, Shenyang Medical College, No. 146, North Huanghe St, Huanggu Dis, Shenyang City, Liaoning Pro 110034, PR China
| | - Xiaomin Zhu
- Department of Pathogen Biology, Shenyang Medical College, No. 146, North Huanghe St, Huanggu Dis, Shenyang City, Liaoning Pro 110034, PR China
| | - Kuimin Chen
- Department of Pathogen Biology, Shenyang Medical College, No. 146, North Huanghe St, Huanggu Dis, Shenyang City, Liaoning Pro 110034, PR China
| | - Renqun Wang
- Department of Pathogen Biology, Shenyang Medical College, No. 146, North Huanghe St, Huanggu Dis, Shenyang City, Liaoning Pro 110034, PR China
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Ho JCM, Au WY, Han L, Kwong YL, Ip MSM. Effect of therapeutic arsenic exposure on pulmonary function. Respir Med 2013; 107:1423-30. [PMID: 23835189 DOI: 10.1016/j.rmed.2013.06.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 06/12/2013] [Accepted: 06/13/2013] [Indexed: 11/27/2022]
Abstract
AIM Arsenic-contaminated drinking water has been associated with respiratory diseases and lung function impairment. Oral arsenic trioxide (ATO) is a standard treatment for acute promyelocytic leukaemia. This study aimed to explore the effect of therapeutic exposure to arsenic on lung function. PATIENTS AND METHOD This was a case-control cross-sectional study on patients with haematological malignancies with or without exposure to ATO. Full lung function tests and serum Clara cell protein 16 (CC16) were measured. RESULTS There were 57 cases (arsenic exposed) and 57 matched controls (arsenic non-exposed) recruited. Among cases, the median duration of ATO exposure was 519 (194-1259) days. The mean FEV(1)/FVC ratio, FEV(1) (% predicted), and RV/TLC (%), as well as % subjects with FEV(1)/FVC below lower limits of normal (LLN), were similar in the two groups with or without arsenic exposure. However the mean TLC (% predicted) and DLCO/VA were significantly higher in arsenic-exposed versus non-exposed group (p = 0.01 and p = 0.008 respectively). There were mildly reduced FEV(1)/FVC ratio and FEF(25-75) (% predicted), largely within normal limits, among high level arsenic exposure compared with non-exposure (p = 0.01 and p = 0.05 respectively). Serum CC16 was comparable among both arsenic exposed and non-exposed groups. CONCLUSION Therapeutic use of oral ATO for a median of around 1.5 years was not associated with clinically significant lung function impairment.
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Affiliation(s)
- James Chung-Man Ho
- Division of Respiratory Medicine, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong Special Administrative Region.
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Parvez F, Chen Y, Brandt-Rauf PW, Bernard A, Dumont X, Slavkovich V, Argos M, D’Armiento J, Foronjy R, Hasan MR, Eunus HEMM, Graziano JH, Ahsan H. Nonmalignant respiratory effects of chronic arsenic exposure from drinking water among never-smokers in Bangladesh. Environ Health Perspect 2008; 116:190-5. [PMID: 18288317 PMCID: PMC2235213 DOI: 10.1289/ehp.9507] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2006] [Accepted: 11/02/2007] [Indexed: 05/07/2023]
Abstract
BACKGROUND Arsenic from drinking water has been associated with malignant and nonmalignant respiratory illnesses. The association with nonmalignant respiratory illnesses has not been well established because the assessments of respiratory symptoms may be influenced by recall bias or interviewer bias because participants had visible skin lesions. OBJECTIVES We examined the relationship of the serum level of Clara cell protein CC16--a novel biomarker for respiratory illnesses--with well As, total urinary As, and urinary As methylation indices. METHODS We conducted a cross-sectional study in nonsmoking individuals (n = 241) selected from a large cohort with a wide range of As exposure (0.1-761 microg/L) from drinking water in Bangladesh. Total urinary As, urinary As metabolites, and serum CC16 were measured in urine and serum samples collected at baseline of the parent cohort study. RESULTS We observed an inverse association between urinary As and serum CC16 among persons with skin lesions (beta = -0.13, p = 0.01). We also observed a positive association between secondary methylation index in urinary As and CC16 levels (beta = 0.12, p = 0.05) in the overall study population; the association was stronger among people without skin lesions (beta = 0.18, p = 0.04), indicating that increased methylation capability may be protective against As-induced respiratory damage. In a subsample of study participants undergoing spirometric measures (n = 31), we observed inverse associations between urinary As and predictive FEV(1) (forced expiratory volume measured in 1 sec) (r = -0.37; FEV(1)/forced vital capacity ratio and primary methylation index (r = -0.42, p = 0.01). CONCLUSIONS The findings suggest that serum CC16 may be a useful biomarker of epithelial lung damage in individuals with arsenical skin lesions. Also, we observed the deleterious respiratory effects of As exposure at concentrations lower than reported in earlier studies.
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Affiliation(s)
- Faruque Parvez
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, USA
| | - Yu Chen
- Department of Environmental Medicine, New York University School of Medicine, New York, USA
| | - Paul W. Brandt-Rauf
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, USA
| | - Alfred Bernard
- Department of Public Health, Catholic University of Louvain, Brussels, Belgium
| | - Xavier Dumont
- Department of Public Health, Catholic University of Louvain, Brussels, Belgium
| | - Vesna Slavkovich
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, USA
| | - Maria Argos
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, USA
| | - Jeanine D’Armiento
- Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, USA
| | - Robert Foronjy
- Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, USA
| | | | - HEM Mahbubul Eunus
- Columbia University Arsenic Research Project in Bangladesh, Dhaka, Bangladesh
| | - Joseph H. Graziano
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, USA
| | - Habibul Ahsan
- Department of Health Studies and Cancer Research Center, University of Chicago, Chicago, USA
- Address correspondence to H. Ahsan, Department of Health Studies, The University of Chicago, 5841 South Maryland Ave., Suite N102, Chicago, IL 60637 USA. Telephone: (773) 834-9956. Fax: (773) 834-0139. E-mail:
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