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Gao Y, Du T, Yang L, Wu L. Research progress of KL-6 in respiratory system diseases. Crit Rev Clin Lab Sci 2024:1-17. [PMID: 38773736 DOI: 10.1080/10408363.2024.2350374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 04/29/2024] [Indexed: 05/24/2024]
Abstract
This article comprehensively elucidates the discovery of Krebs von den Lungen-6 (KL-6), its structural features, functional mechanisms, and the current research status in various respiratory system diseases. Discovered in 1985, KL-6 was initially considered a tumor marker, but its elevated levels in interstitial lung disease (ILD) led to its recognition as a relevant serum marker for ILD. KL-6 is primarily produced by type 2 alveolar epithelial cell regeneration. Over the past 30 years since the discovery of KL-6, the number of related research papers has steadily increased annually. Following the coronavirus disease 2019 (COVID-19) pandemic, there has been a sudden surge in relevant literature. Despite KL-6's potential as a biomarker, its value in the diagnosis, treatment, and prognosis varies across different respiratory diseases, including ILD, idiopathic pulmonary fibrosis (IPF), COVID-19, and lung cancer. Therefore, as an important serum biomarker in respiratory system diseases, the value of KL-6 still requires further investigation.
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Affiliation(s)
- Yi Gao
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tianming Du
- College of Medicine and Biological Information Engineering, Northeastern University, Shenyang, China
| | - Lianbo Yang
- Department of Reparative and Reconstructive Surgery, the Second Hospital of Dalian Medical University, Dalian, China
| | - Lina Wu
- Department of Laboratory Medicine, Shengjing Hospital of China Medical University, Shenyang, China
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He X, Ji J, Chen X, Luo Z, Fang S, Yan H, Guo L. Serum ferritin as a significant biomarker for patients with idiopathic inflammatory myopathy-associated interstitial lung disease: A systematic review and meta-analysis. Semin Arthritis Rheum 2024; 64:152350. [PMID: 38086199 DOI: 10.1016/j.semarthrit.2023.152350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 11/14/2023] [Accepted: 12/05/2023] [Indexed: 01/12/2024]
Abstract
OBJECTIVE The biomarkers for predicting the occurrence, progression, and death of idiopathic inflammatory myopathy-associated interstitial lung disease (IIM-ILD) remain unclear. Serum ferritin (SF) is a potential candidate and this systematic review and meta-analysis aimed to reveal the clinical significance of SF in IIM-ILD. METHODS Eligible English studies were selected from PubMed, Embase, Web of science and Scopus up to 9 June 2023. The SF levels in patients with IIM-ILD were extracted and pooled. Subgroup analysis was performed based on disease types, sensitivity analysis was conducted by excluding one class of literature at a time, and publication bias was assessed by funnel plot and Egger's test. RESULTS Pooled analysis of 1,933 patients with IIM from 19 studies showed that SF levels were significantly higher in IIM-ILD group (WMD=263.53ng/mL, 95% CI: 146.44-380.62, p<0.001) than IIM without ILD, subgroup analysis showed that SF levels in DM-ILD (WMD = 397.67ng/mL, 95% CI:142.84-652.50, p = 0.002) and PM/DM-ILD (WMD = 117.68 ng/mL, 95% CI: 86.32-149.04, p < 0.001) were significantly higher compared to those without ILD. SF levels were significantly higher in rapidly progressive interstitial lung disease group (RP-ILD)(WMD = 484.99 ng/mL, 95% CI: 211.12-758.87, p= 0.001) than chronic ILD(C-ILD) group, subgroup analysis showed that SF levels in DM-RP-ILD (WMD= 509.75 ng/mL, 95% CI: 215.34-804.16, p=0.001) were significantly higher than those in DM-C-ILD group. SF levels were significantly higher in death group (WMD= 722.16 ng/mL, 95% CI: 572.32-872.00, p< 0.001) compared to the survival group, subgroup analysis showed that death patients with DM-ILD(WMD= 735.62 ng/mL, 95% CI:574.92-896.32, p<0.001) and PM-ILD (WMD= 632.56 ng/mL, 95% CI:217.92-1047.19, p=0.003) had significantly higher SF levels than survival group respectively. CONCLUSION Increased SF levels can serve as a biomarker for predicting the occurrence, progression and death of patients with IIM-ILD, which can provide early warning sign for intervention and prognosis evaluation for IIM-ILD patients.
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Affiliation(s)
- Xing He
- Department of Pulmonary and Critical Care Medicine, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China; Department of Pulmonary and Critical Care Medicine, Cheng Du Qing Cheng Mt. hospital, Chongzhou City, Chengdu, China
| | - Jiaqi Ji
- Department of Pulmonary and Critical Care Medicine, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Xixi Chen
- Department of Rheumatology and Immunology, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Zeli Luo
- Department of Critical Care Medicine, Wenjiang District People's Hospital, Chengdu, China
| | - Siyu Fang
- Department of Critical Care Medicine,The Third People's Hospital of Chengdu, Chengdu, China
| | - Haiying Yan
- Department of Pulmonary and Critical Care Medicine, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China; Department of Pulmonary and Critical Care Medicine, Cheng Du Qing Cheng Mt. hospital, Chongzhou City, Chengdu, China
| | - Lu Guo
- Department of Pulmonary and Critical Care Medicine, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China.
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Essouma M. Autoimmune inflammatory myopathy biomarkers. Clin Chim Acta 2024; 553:117742. [PMID: 38176522 DOI: 10.1016/j.cca.2023.117742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 12/21/2023] [Accepted: 12/21/2023] [Indexed: 01/06/2024]
Abstract
The autoimmune inflammatory myopathy disease spectrum, commonly known as myositis, is a group of systemic diseases that mainly affect the muscles, skin and lungs. Biomarker assessment helps in understanding disease mechanisms, allowing for the implementation of precise strategies in the classification, diagnosis, and management of these diseases. This review examines the pathogenic mechanisms and highlights current data on blood and tissue biomarkers of autoimmune inflammatory myopathies.
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Affiliation(s)
- Mickael Essouma
- Network of Immunity in Infections, Malignancy and Autoimmunity, Universal Scientific Education and Research Network, Cameroon
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Wei F, Zhang X, Yang S, Geng J, Xie B, Ren Y, Dai H. Evaluation of the Clinical Value of KL-6 and Tumor Markers in Primary Sjögren's Syndrome Complicated with Interstitial Lung Disease. J Clin Med 2023; 12:4926. [PMID: 37568332 PMCID: PMC10419721 DOI: 10.3390/jcm12154926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 03/19/2023] [Accepted: 07/21/2023] [Indexed: 08/13/2023] Open
Abstract
OBJECTIVE primary Sjögren's syndrome (pSS) is an autoimmune disease, of which the most common complication is interstitial lung disease (ILD). This study aimed to analyze the clinical value of Krebs von den Lungen-6 (KL-6), carcinoembryonic antigen (CEA), and carbohydrate antigen 153(CA153) in patients with pSS complicated with ILD (pSS-ILD), given that only few studies have evaluated this. METHODS This is a cross-sectional study. Serum KL-6 levels (U/mL) were measured using chemiluminescence immunoassay, and concentrations of serum tumor markers were determined using the immunofluorescence method in 64 cases of pSS-ILD (pSS-ILD group), 23 cases without ILD (non-ILD group), and 45 healthy controls. The correlation between KL-6 and tumor markers as well as lung function was analyzed, and the factors that were associated with pSS-ILD were screened. RESULTS The serum KL-6 was more abnormally increased in patients with pSS-ILD, and the serum KL-6, CEA, carbohydrate antigen 125 (CA125), and CA153 levels were significantly higher in the pSS-ILD group than in the non-ILD and healthy control groups (p < 0.05). KL-6, CEA, and CA153 were negatively correlated with forced vital capacity (FVC%), forced expiratory volume in 1 s (FEV1%), total lung capacity (TLC%), and diffusing capacity for carbon monoxide (DLCO%) (all p < 0.05). Multivariate logistic analysis showed that KL-6 was an independent factor associated with pSS-ILD. CONCLUSIONS In conclusion, we evaluated the association between clinical values of KL-6, tumor markers, and pSS-ILD, and found that KL-6 and tumor markers such as CEA, CA153, and CA125 in patients with pSS-ILD were higher than in patients with non-ILD, and KL-6 was more abnormally increased and significantly associated with ILD development in patients with pSS.
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Affiliation(s)
- Fengqin Wei
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Capital Medical University, Beijing 100029, China
- National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
- Department of Pulmonary and Critical Care Medicine, Qingdao Municipal Hospital, Qingdao 266011, China
| | - Xinran Zhang
- National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
- Department of Clinical Research and Data Management, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing 100029, China
| | - Shengnan Yang
- Department of Pulmonary and Critical Care Medicine, Tianjin Chest Hospital, Tianjin 300222, China
| | - Jing Geng
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Capital Medical University, Beijing 100029, China
- National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Bingbing Xie
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Capital Medical University, Beijing 100029, China
- National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Yanhong Ren
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Capital Medical University, Beijing 100029, China
- National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - Huaping Dai
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Capital Medical University, Beijing 100029, China
- National Center for Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
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The Role of Myositis-Specific Autoantibodies and The Management of Interstitial Lung Disease in Idiopathic Inflammatory Myopathies: A Systematic Review. Semin Arthritis Rheum 2022; 57:152088. [DOI: 10.1016/j.semarthrit.2022.152088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 08/21/2022] [Accepted: 08/24/2022] [Indexed: 11/24/2022]
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El-Beheidy R, Domouky AM, Zidan H, Amer YA. Serum KL-6 as predictive and prognostic marker of interstitial lung disease in childhood connective tissue diseases: a pilot study. Reumatismo 2021; 73. [PMID: 34814656 DOI: 10.4081/reumatismo.2021.1399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 06/27/2021] [Indexed: 11/23/2022] Open
Abstract
This study was aimed to evaluate serum KL-6 levels to determine if this marker can be used for diagnosing and assessing severity of interstitial lung disease (ILD) in children with connective tissue disorders. In total, 40 patients [18 patients with juvenile systemic lupus erythematosus (JSLE), 10 patients with juvenile idiopathic arthritis (JIA), 8 patients with juvenile mixed connective tissue disease (JMCTD), 3 patients with juvenile systemic sclerosis (JSSc), and 1 patient with juvenile dermatomyositis (JDM)] and 20 healthy controls were included in this study. Age, sex, and duration of CTD and ILD (if any) were recorded. Blood samples from all the patients and controls were examined by ELISA. 20 of the 40 patients with CTD (50%) had ILD, 12 were mild and 8 were severe as assessed by spirometry. The median serum KL-6 level was 102.7 U/mL (76.1-180.8) in the CTD with severe ILD group, 72.2 U/mL (58.4- 100.5) in the CTD with mild ILD group, 56.7 U/mL (35.8-68.5) in the CTD without ILD group, and 52.3 U/mL (32.8-62.4) in the control group. KL-6 levels were significantly higher in the CTD with ILD (p<0.05), at a cutoff of 63.4 U/ml identified by ROC curve, serum KL-6 showed a sensitivity of 95.2% and specificity of 89.7%. KL-6 is a valuable biomarker for diagnostic purposes and to detect severity in ILD in childhood CTD.
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Affiliation(s)
- R El-Beheidy
- Pulmonology, Immunology and Allergy Unit, Pediatrics Department, Faculty of Medicine, Zagazig University.
| | - A M Domouky
- Pulmonology, Immunology and Allergy Unit, Pediatrics Department, Faculty of Medicine, Zagazig University, Egypt; Human Anatomy and Embryology Department, Faculty of Medicine, Zagazig University.
| | - H Zidan
- Medical Biochemistry and Molecular Biology, Faculty of Medicine, Zagazig University.
| | - Y A Amer
- Rheumatology and Rehabilitation Department, Faculty of Medicine, Zagazig University.
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Lou Y, Wei Q, Fan B, Zhang L, Wang X, Chen Z, Tan X, Zheng Y. The composition of the lung microbiome differs between patients with dermatomyositis and rheumatoid arthritis associated with interstitial lung disease. FEBS Open Bio 2021; 12:258-269. [PMID: 34800087 PMCID: PMC8727938 DOI: 10.1002/2211-5463.13334] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 11/06/2021] [Accepted: 11/19/2021] [Indexed: 12/04/2022] Open
Abstract
Dermatomyositis and rheumatoid arthritis are inflammatory diseases that affect the skeletal muscles and joints, respectively. A common systemic complication of these diseases is interstitial lung disease (ILD), which leads to a poor prognosis and increased mortality. However, the mechanism for the initiation and development of ILD in patients with dermatomyositis is currently unknown. In the present study, we used 16S rRNA high‐throughput sequencing to profile the bacterial community composition of bronchoalveolar lavage fluid of patients with dermatomyositis associated with ILD (DM‐ILD; shortened to DM below), rheumatoid arthritis associated with ILD (RA‐ILD; shortened to RA below) and healthy controls (N) aiming to understand the differences in their lung microbiota and to predict gene function. We found that there were more operational taxonomic units (OTUs) in the lung microbiota of both RA and DM compared to N, although there was no significant difference in the number of OTUs between RA and DM. Similarly, the diversity in alphaproteobacteria differed between RA and DM compared to N, but not between RA and DM. The lung microbiota of RA, DM and N was mainly comprised of five phyla: Firmicutes, Bacteroidetes, Proteobacteria, Actinobacteria and Fusobacteria, with 10 dominant genera. Despite the similarity in microbiota composition, we also identified 41 OTUs of lung microbiota that differed among RA, DM and N. Additionally, linear discriminant analysis effect size and linear discriminant analysis genus scores confirmed that 31 microbial biomarkers were clearly distinguished among RA, DM and N. The functional and metabolic alterations of the lung microbiota among RA, DM and N were predicted using picrust, and differentially abundant KEGG (Kyoto Encyclopedia of Genes and Genomes) pathways were identified. Research on the lung microbiota of patients with DM and RA may open new opportunities for developing biomarkers to identify high‐risk patients.
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Affiliation(s)
- Yueyan Lou
- Department of Pulmonology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Qing Wei
- Department of Laboratory Medicine, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Bijun Fan
- Department of Pulmonology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Liyan Zhang
- Department of Pulmonology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xiaodong Wang
- Department of Rheumatology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhiwei Chen
- Department of Rheumatology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xiaoming Tan
- Department of Pulmonology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yu Zheng
- Department of Pulmonology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Role of MUC1 rs4072037 polymorphism and serum KL-6 levels in patients with antisynthetase syndrome. Sci Rep 2021; 11:22574. [PMID: 34799647 PMCID: PMC8604941 DOI: 10.1038/s41598-021-01992-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 11/08/2021] [Indexed: 11/08/2022] Open
Abstract
Mucin 1/Krebs von den Lungen-6 (KL-6) is proposed as a serum biomarker of several interstitial lung diseases (ILDs), including connective tissue disorders associated with ILD. However, it has not been studied in a large cohort of Caucasian antisynthetase syndrome (ASSD) patients. Consequently, we assessed the role of MUC1 rs4072037 and serum KL-6 levels as a potential biomarker of ASSD susceptibility and for the differential diagnosis between patients with ILD associated with ASSD (ASSD-ILD +) and idiopathic pulmonary fibrosis (IPF). 168 ASSD patients (149 ASSD-ILD +), 174 IPF patients and 523 healthy controls were genotyped for MUC1 rs4072037 T > C. Serum KL-6 levels were determined in a subgroup of individuals. A significant increase of MUC1 rs4072037 CC genotype and C allele frequencies was observed in ASSD patients compared to healthy controls. Likewise, MUC1 rs4072037 TC and CC genotypes and C allele frequencies were significantly different between ASSD-ILD+ and IPF patients. Additionally, serum KL-6 levels were significantly higher in ASSD patients compared to healthy controls. Nevertheless, no differences in serum KL-6 levels were found between ASSD-ILD+ and IPF patients. Our results suggest that the presence of MUC1 rs4072037 C allele increases the risk of ASSD and it could be a useful genetic biomarker for the differential diagnosis between ASSD-ILD+ and IPF patients.
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Shanshan L, Yamei Z, Ling Z, Xin L, Guochun W. Progranulin correlated with rapid progressive interstitial lung disease in dermatomyositis with anti-melanoma differentiation-associated gene 5 antibody. Clin Rheumatol 2021; 41:757-763. [PMID: 34718893 DOI: 10.1007/s10067-021-05816-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 05/28/2021] [Accepted: 06/10/2021] [Indexed: 12/31/2022]
Abstract
OBJECTIVES This study aimed to detect the expression of progranulin (PGRN) and elucidate associations with clinical features in dermatomyositis (DM) patients with anti-melanoma differentiation-associated gene 5 (anti-MDA5) antibody. METHODS We enrolled 40 DM patients with anti-MDA5 antibody, 20 patients with antisynthetase syndrome (ASS; disease control), and 20 healthy individuals (healthy control, HC). The clinical features of patients with anti-MDA5 antibody and anti-histidyl-tRNA antibody were collected. The level of PGRN in the serum was tested by ELISA. RESULTS The PGRN levels in DM patients with anti-MDA5 antibody (166.74 ± 97.95 ng/ml) were significantly higher than those in patients with ASS (82.66 ± 40.50 ng/ml; p < 0.001) and in HC (42.34 ± 18.69 ng/ml; p < 0.001). Patients with rapid progressive interstitial lung disease (RP-ILD) in DM with anti-MDA5 antibody (213.57 ± 114.05 ng/ml) had higher levels of PGRN than those without RP-ILD (135.51 ± 72.41 ng/ml; p = 0.012). ROC analysis showed an AUC value at 0.715 (95% CI, 0.541-0.888) for diagnosis of RP-ILD in DM patients with anti-MDA5 antibody. The expression of PGRN was positively correlated with the levels of ALT, AST, CK, LDH and ferritin (all p < 0.05). CONCLUSIONS Our results indicated PGRN had great potential as a valuable serum marker of RP-ILD in DM with anti-MDA5 antibody. Key Points The level of PGRN was elevated in DM patients with anti-MDA5 antibody, especially for those with RP-ILD.
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Affiliation(s)
- Li Shanshan
- Department of Rheumatology, China-Japan Friendship Hospital, No.2 Yinghua East st, Chaoyang District, Beijing, China
| | - Zhang Yamei
- Department of Rheumatology, China-Japan Friendship Hospital, No.2 Yinghua East st, Chaoyang District, Beijing, China
| | - Zhang Ling
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
| | - Lu Xin
- Department of Rheumatology, China-Japan Friendship Hospital, No.2 Yinghua East st, Chaoyang District, Beijing, China
| | - Wang Guochun
- Department of Rheumatology, China-Japan Friendship Hospital, No.2 Yinghua East st, Chaoyang District, Beijing, China.
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Shirai Y, Fukue R, Kaneko Y, Kuwana M. Clinical Relevance of the Serial Measurement of Krebs von den Lungen-6 Levels in Patients with Systemic Sclerosis-Associated Interstitial Lung Disease. Diagnostics (Basel) 2021; 11:2007. [PMID: 34829353 PMCID: PMC8619247 DOI: 10.3390/diagnostics11112007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/21/2021] [Accepted: 10/25/2021] [Indexed: 01/16/2023] Open
Abstract
Krebs von den Lungen-6 (KL-6) levels measured at baseline have been reported as a circulating biomarker useful for the detection, evaluation of severity and assessment of risk of the progression of interstitial lung disease (ILD) in patients with systemic sclerosis (SSc). In this retrospective study, longitudinal changes in serum KL-6 levels over 2 years were examined in 110 patients with SSc using prospectively collected cohort data. Serum KL-6 levels fluctuated in a significant proportion of the patients but remained stable in the remaining patients. A wide range of variability of longitudinal KL-6 levels was associated with the presence of ILD, diffuse cutaneous SSc, positive anti-topoisomerase I antibodies, negative anticentromere antibodies, increased ILD extent on high-resolution computed tomography, extensive disease, low pulmonary function parameters, high KL-6 levels at baseline and immunomodulatory treatment. Extensive disease was consistently identified as an independent factor associated with variability in KL-6 levels in different models of multiple regression analysis. We failed to demonstrate correlations between trends for KL-6 level changes during the 6 months after SSc diagnosis and ILD progression over 2 years in patients with SSc-ILD. Serum KL-6 levels fluctuate in SSc patients with ILD, especially in those with extensive disease, but the clinical utility of a serial KL-6 level measurement remains uncertain.
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Affiliation(s)
- Yuichiro Shirai
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo 113-8603, Japan; (Y.S.); (R.F.)
- Scleroderma/Myositis Center of Excellence, Nippon Medical School Hospital, Tokyo 113-8603, Japan
| | - Ryosuke Fukue
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo 113-8603, Japan; (Y.S.); (R.F.)
| | - Yuko Kaneko
- Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan;
| | - Masataka Kuwana
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo 113-8603, Japan; (Y.S.); (R.F.)
- Scleroderma/Myositis Center of Excellence, Nippon Medical School Hospital, Tokyo 113-8603, Japan
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Association of serum KL-6 levels on COVID-19 severity: A cross-sectional study design with purposive sampling. Ann Med Surg (Lond) 2021; 69:102673. [PMID: 34401147 PMCID: PMC8359564 DOI: 10.1016/j.amsu.2021.102673] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/30/2021] [Accepted: 08/03/2021] [Indexed: 02/06/2023] Open
Abstract
Background The main target of SARS-CoV2 is the alveolar type II (AT2) cells of the lung. SARS-CoV2 evades the innate immune system resulting in the release of proinflammatory cytokines (IL-1β, IL-6, TNF-α) which causes AT2 cell damage. Krebs von den Lungen (KL-6) is a specific biomarker of AT2 cell damage. KL-6 is produced in AT2 cells that are injured/regenerated. Objective Research that discusses the role of KL-6 in COVID-19 is still being debated and not much has been done in Indonesia. Methods This study was an analytical study with a prospective design on 75 COVID-19 patients who were treated. Subjects were divided into two large groups according to their degree of severity, 57 subjects with severe degrees and 18 subjects with non-severe degrees. The serum KL-6 levels were measured on days 0 and 6. Data were analyzed using paired t-test and independent t-test for data were normally distributed and Wilcoxon test and Mann Whitney test for data that were not normally distributed. Result In this study, the mean serum KL-6 for day 0 in the severe group was higher than the non-severe group with values of 45.70 U/mL and 44.85 U/mL. On day 6, the mean serum KL-6 in the severe group was lower than that in the non-severe group with values of 41.3 U/mL and 41.95 U/mL. Serum KL-6 in the severe group experienced an even greater decrease than the non-severe group. Conclusion There was no significant association between serum KL-6 values on 0 days in the severity of COVID-19. Most symptoms in COVID-19 were cough (84 %), dyspnoea (78.6 %) and fever (68 %). Serum KL-6 decreased on day 6 in COVID-19 patients. KL-6 on day 0 does not have a significant correlation with the severity of COVID-19.
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Monitoring disease activity and damage in adult and juvenile idiopathic inflammatory myopathy. Curr Opin Rheumatol 2020; 32:553-561. [PMID: 32890032 DOI: 10.1097/bor.0000000000000749] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
PURPOSE OF REVIEW We have reviewed the literature to identify significant advances related to disease activity and damage in the idiopathic inflammatory myopathies (IIMs) from January 2019 to July 2020. RECENT FINDINGS New observations in the field from 2019 to 2020 have resulted in a better understanding of the clinical association and pathogenic origins of IIM. The use of patient-reported outcome measures and perspectives, identifying biomarkers and making better use of autoantibody testing are summarized. Basic sciences have led to an improved understanding of the role of NETosis in calcinosis, and of interferon type 1, in IIM. Preliminary insights are offered into Covid-19 in the setting of IIM, and the use of potential tools for monitoring disease remotely, which may assume larger importance for optimal disease management during a global pandemic. The wider exploration of newer imaging modalities and the use of nailfold capillaroscopy is a further step in better management of the condition. SUMMARY The summarized research in IIM is a step forward in being able to further define, and to distinguish disease activity from damage, in order to potentially aid future clinical diagnosis and management in this challenging disease.
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Lou Y, Zheng Y, Fan B, Zhang L, Zhu F, Wang X, Chen Z, Tan X, Wei Q. Serum levels of interleukins and S100A8/A9 correlate with clinical severity in patients with dermatomyositis-associated interstitial lung disease. BMC Pulm Med 2020; 20:196. [PMID: 32680574 PMCID: PMC7368671 DOI: 10.1186/s12890-020-01226-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 07/02/2020] [Indexed: 12/19/2022] Open
Abstract
Background Dermatomyositis (DM) is a systemic autoimmune inflammatory disorder that affects primarily skin, muscle and lung, frequently associated with interstitial lung disease (ILD). The objective of this study is to investigate the association between serum cytokines and clinical severity in patients with DM-ILD. Methods Serum samples of 30 healthy controls, 14 DM patients without ILD and 40 DM patients with ILD were collected. Serum S100A8/A9 levels were analyzed by enzyme-linked immunosorbent assay (ELISA) and levels of interleukins were measured by cytometric beads array (CBA). Then we performed multivariate logistic regression analysis to determine factors independently associated with ILD development. Results Serum IL-4, IL-6 and S100A8/A9 levels were significantly higher in DM patients with ILD than those in healthy controls (p = 0.0013, 0.0017 and < 0.0001, respectively). Serum IL-10 level of patients was dramatically lower than that in controls (p = 0.0001). In DM patients, the levels were significantly higher in patients with A/SIP than in those with CIP (p = 0.0046, 0.0339 and 0.0133) or without ILD (p = 0.0165, 0.0370 and < 0.0001). IL-4 (r = 0.1171, p = 0.0040), IL-6 (r = 0.1174, p = 0.0040) and IL-10 (r = − 0.1829, p = 0.0003) were significantly correlated with S100A8/A9 in DM-ILD patients. S100A8/A9 was significantly correlated with high-resolution computed tomography (HRCT) (r = 0.1642, p = 0.0157) and lung function (DLCO%: r = − 0.2066, p = 0.0061, FVC%: r = − 0.2156, p = 0.0050). Moreover, logistic regression analysis revealed that S100A8/A9 levels were independently associated with ILD development in DM patients (p = 0.004). Conclusions Serum level of S100A8/A9 may be a valuable predictor for assessing the clinical severity of DM-ILD patients. Serum IL-4, IL-6 and IL-10 levels were highly correlated with S100A8/A9, so these cytokines may play a synergistic effect on the progression of DM-ILD.
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Affiliation(s)
- Yueyan Lou
- Department of Pulmonology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Yu Zheng
- Department of Pulmonology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Bijun Fan
- Department of Pulmonology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Liyan Zhang
- Department of Pulmonology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Feng Zhu
- Department of Pulmonology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Xiaodong Wang
- Department of Rheumatology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Zhiwei Chen
- Department of Rheumatology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Xiaoming Tan
- Department of Pulmonology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China.
| | - Qing Wei
- Department of Laboratory Medicine, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China.
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14
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Lou Y, Zheng Y, Fan B, Zhang L, Zhu F, Wang X, Chen Z, Tan X. Serum S100A12 levels are correlated with clinical severity in patients with dermatomyositis-associated interstitial lung disease. J Int Med Res 2019; 48:300060519887841. [PMID: 31865833 PMCID: PMC7607057 DOI: 10.1177/0300060519887841] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Objective S100A12 is an emerging inflammatory disease biomarker. Interstitial lung disease (ILD) is a common, severe complication of dermatomyositis (DM). This study was performed to investigate the association between S100A12 and disease activity and prognosis in patients with DM-associated ILD (i.e., DM-ILD). Methods Serum S100A12 levels were measured using enzyme-linked immunosorbent assays in patients with stable DM-ILD, patients with acute exacerbation of DM-ILD (AE DM-ILD), and healthy controls (HCs). The relationships of serum S100A12 levels with C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), ferritin, high-resolution computed tomography (HRCT) scores, and pulmonary functions were evaluated by multiple unpaired t-tests and Pearson correlation. Results Serum S100A12 levels were higher in patients with stable DM-ILD and those with AE DM-ILD than in HCs. Serum S100A12 levels in patients with stable DM-ILD and those with AE DM-ILD were positively correlated with CRP, ESR, and ferritin. S100A12 levels were positively correlated with HRCT scores in patients with stable DM-ILD and those with AE DM-ILD, while they were negatively correlated with predicted percentages of forced vital capacity and predicted percentages of carbon monoxide diffusing capacity in those patients. Conclusion Our findings demonstrate the usefulness of serum S100A12 levels for assessing clinical severity and prognosis of DM-ILD.
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Affiliation(s)
- Yueyan Lou
- Department of Pulmonology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China
| | - Yu Zheng
- Department of Pulmonology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China
| | - Bijun Fan
- Department of Pulmonology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China
| | - Liyan Zhang
- Department of Pulmonology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China
| | - Feng Zhu
- Department of Pulmonology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China
| | - Xiaodong Wang
- Department of Rheumatology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China
| | - Zhiwei Chen
- Department of Rheumatology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China
| | - Xiaoming Tan
- Department of Pulmonology, Renji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China
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15
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Kilinc AA, Arslan A, Yildiz M, Kucur M, Adrovic A, Barut K, Sahin S, Cokugras H, Kasapcopur O. Serum KL-6 level as a biomarker of interstitial lung disease in childhood connective tissue diseases: a pilot study. Rheumatol Int 2019; 40:1701-1706. [PMID: 31784789 DOI: 10.1007/s00296-019-04485-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 11/23/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Ayse Ayzit Kilinc
- Department of Pediatric Pulmonology, Cerrahpasa Faculty of Medicine, İstanbul University-Cerrahpasa, İstanbul, Turkey
| | - Asli Arslan
- Department of Pediatric Pulmonology, Cerrahpasa Faculty of Medicine, İstanbul University-Cerrahpasa, İstanbul, Turkey
| | - Mehmet Yildiz
- Department of Pediatric Rheumatology, Cerrahpasa Faculty of Medicine, İstanbul University-Cerrahpasa, İstanbul, Turkey
| | - Mine Kucur
- Department of Biochemistry, Cerrahpasa Faculty of Medicine, İstanbul University-Cerrahpasa, İstanbul, Turkey
| | - Amra Adrovic
- Department of Pediatric Rheumatology, Cerrahpasa Faculty of Medicine, İstanbul University-Cerrahpasa, İstanbul, Turkey
| | - Kenan Barut
- Department of Pediatric Rheumatology, Cerrahpasa Faculty of Medicine, İstanbul University-Cerrahpasa, İstanbul, Turkey
| | - Sezgin Sahin
- Department of Pediatric Rheumatology, Cerrahpasa Faculty of Medicine, İstanbul University-Cerrahpasa, İstanbul, Turkey
| | - Haluk Cokugras
- Department of Pediatric Pulmonology, Cerrahpasa Faculty of Medicine, İstanbul University-Cerrahpasa, İstanbul, Turkey
| | - Ozgur Kasapcopur
- Department of Pediatric Rheumatology, Cerrahpasa Faculty of Medicine, İstanbul University-Cerrahpasa, İstanbul, Turkey.
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Waldman R, DeWane ME, Lu J. Dermatomyositis: Diagnosis and treatment. J Am Acad Dermatol 2019; 82:283-296. [PMID: 31279813 DOI: 10.1016/j.jaad.2019.05.105] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/09/2019] [Accepted: 05/11/2019] [Indexed: 12/13/2022]
Abstract
The second article in this continuing medical education series reviews the initial evaluation of patients with suspected dermatomyositis (DM), the relevant work-up for malignancy and interstitial lung disease once a diagnosis of DM is made, and treatment recommendations for patients with DM based on disease severity, the presence of systemic symptoms, and myositis-specific antibody (MSA) profiles. This review emphasizes the emerging role of MSAs in the diagnosis of DM and highlights how MSAs can be used to guide the appropriate work-up for malignancy and interstitial lung disease. The treatment approach proposed by this continuing medical education series discusses both established and novel therapies for DM and highlights the importance of considering lesion type, degree of muscle involvement, presence of systemic symptoms, presence of MSAs, and patient age when determining the best treatment approach for a patient with DM.
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Affiliation(s)
- Reid Waldman
- Department of Dermatology, University of Connecticut, Farmington, Connecticut
| | - Madeline E DeWane
- University of Connecticut, School of Medicine, Farmington, Connecticut
| | - Jun Lu
- Department of Dermatology, University of Connecticut, Farmington, Connecticut.
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