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Jiang Q, Zhao J, Jia Q, Wang H, Xue W, Ning F, Wang J, Wang Y, Zhu Z, Tian L. MiR-148a-3p within HucMSC-Derived Extracellular Vesicles Suppresses Hsp90b1 to Prevent Fibroblast Collagen Synthesis and Secretion in Silica-Induced Pulmonary Fibrosis. Int J Mol Sci 2023; 24:14477. [PMID: 37833927 PMCID: PMC10572270 DOI: 10.3390/ijms241914477] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/13/2023] [Accepted: 09/15/2023] [Indexed: 10/15/2023] Open
Abstract
Silicosis is a fatal occupational respiratory disease caused by the prolonged inhalation of respirable silica. The core event of silicosis is the heightened activity of fibroblasts, which excessively synthesize extracellular matrix (ECM) proteins. Our previous studies have highlighted that human umbilical cord mesenchymal stem cell-derived extracellular vesicles (hucMSC-EVs) hold promise in mitigating silicosis and the significant role played by microRNAs (miRNAs) in this process. Delving deeper into this mechanism, we found that miR-148a-3p was the most abundant miRNA of the differential miRNAs in hucMSC-EVs, with the gene heat shock protein 90 beta family member 1 (Hsp90b1) as a potential target. Notably, miR-148a-3p's expression was downregulated during the progression of silica-induced pulmonary fibrosis both in vitro and in vivo, but was restored after hucMSC-EVs treatment (p < 0.05). Introducing miR-148a-3p mimics effectively hindered the collagen synthesis and secretion of fibroblasts induced by transforming growth factor-β1 (TGF-β1) (p < 0.05). Confirming our hypothesis, Hsp90b1 was indeed targeted by miR-148a-3p, with significantly reduced collagen activity in TGF-β1-treated fibroblasts upon Hsp90b1 inhibition (p < 0.05). Collectively, our findings provide compelling evidence that links miR-148a-3p present in hucMSC-EVs with the amelioration of silicosis, suggesting its therapeutic potential by specifically targeting Hsp90b1, thereby inhibiting fibroblast collagen activities. This study sheds light on the role of miR-148a-3p in hucMSC-EVs, opening avenues for innovative therapeutic interventions targeting molecular pathways in pulmonary fibrosis.
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Affiliation(s)
- Qiyue Jiang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Jing Zhao
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Qiyue Jia
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Hongwei Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Wenming Xue
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Fuao Ning
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Jiaxin Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Yan Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Zhonghui Zhu
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Lin Tian
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China
- Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
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2
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Ganesan N, Ronsmans S, Hoet P. Differential immunological effects of silica nanoparticles on peripheral blood mononuclear cells of silicosis patients and controls. Front Immunol 2022; 13:1025028. [PMID: 36311760 PMCID: PMC9606771 DOI: 10.3389/fimmu.2022.1025028] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 09/21/2022] [Indexed: 11/29/2022] Open
Abstract
Silicosis is a fibrotic disease caused by the inhalation of respirable silica particles, which are typically engulfed by alveolar macrophages and subsequently induce the release of inflammatory cytokines. Various animal experimental and human studies have focused on modeling silicosis, to assess the interactions of macrophages and other cell types with silica particles. There is still, however, limited knowledge on the differential response upon silica-exposure between silicosis patients and controls. We focused on studying the responsiveness of peripheral blood mononuclear cells (PBMCs) to silica nanoparticles (SiNPs) - Ludox and NM-200 - of silicosis patients and controls. The proliferative capacity of T- CD3+ and B- CD19+ cells, were evaluated via Carboxyfluorescein succinimidyl ester (CFSE) assay. The activation status of lymphocyte subsets and response to silica were also evaluated by comparing the extent of micro-granuloma or aggregate formation with the cytokine secretion profiles between both groups of individuals. The proliferative capacity of CD19+ cells was elevated in silicotic patients as opposed to controls. Subsets of regulatory T cells (CD4+ CD25+ and CD8+ CD25+) and immunoglobulins IgM and IgG were also significantly increased in patients. The number and the size of aggregates formed were higher with SiNPs stimulation in patients compared to controls. Multivariable analysis also elucidated the role of key cytokines like interleukin-1β (IL-1β), IL-6 and interferon-gamma (IFN-γ), which were upregulated in SiNP-stimulated PBMCs of patients compared to controls. Our ex vivo model thus has potential to provide insights into the immunological effects of silica particles in lymphocytes of silicosis patients and controls.
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Affiliation(s)
- Nirosha Ganesan
- Laboratory of Toxicology, Unit of Environment & Health, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), KU Leuven, Leuven, Belgium
| | - Steven Ronsmans
- Laboratory of Toxicology, Unit of Environment & Health, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
- Clinic for Occupational and Environmental Medicine, Department of Respiratory Diseases, University Hospitals Leuven, Leuven, Belgium
| | - Peter Hoet
- Laboratory of Toxicology, Unit of Environment & Health, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
- Laboratory of Respiratory Diseases and Thoracic Surgery (BREATHE), KU Leuven, Leuven, Belgium
- *Correspondence: Peter Hoet,
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Ferri C, Arcangeletti MC, Caselli E, Zakrzewska K, Maccari C, Calderaro A, D'Accolti M, Soffritti I, Arvia R, Sighinolfi G, Artoni E, Giuggioli D. Insights into the knowledge of complex diseases: Environmental infectious/toxic agents as potential etiopathogenetic factors of systemic sclerosis. J Autoimmun 2021; 124:102727. [PMID: 34601207 DOI: 10.1016/j.jaut.2021.102727] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 12/14/2022]
Abstract
Systemic sclerosis (SSc) is a connective tissue disease secondary to three cardinal pathological features: immune-system alterations, diffuse microangiopathy, and fibrosis involving the skin and internal organs. The etiology of SSc remains quite obscure; it may encompass multiple host genetic and environmental -infectious/chemical-factors. The present review focused on the potential role of environmental agents in the etiopathogenesis of SSc based on epidemiological, clinical, and laboratory investigations previously published in the world literature. Among infectious agents, some viruses that may persist and reactivate in infected individuals, namely human cytomegalovirus (HCMV), human herpesvirus-6 (HHV-6), and parvovirus B19 (B19V), and retroviruses have been proposed as potential causative agents of SSc. These viruses share a number of biological activities and consequent pathological alterations, such as endothelial dysfunction and/or fibroblast activation. Moreover, the acute worsening of pre-existing interstitial lung involvement observed in SSc patients with symptomatic SARS-CoV-2 infection might suggest a potential role of this virus in the overall disease outcome. A variety of chemical/occupational agents might be regarded as putative etiological factors of SSc. In this setting, the SSc complicating silica dust exposure represents one of the most promising models of study. Considering the complexity of SSc pathogenesis, none of suggested causative factors may explain the appearance of the whole SSc; it is likely that the disease is the result of a multifactorial and multistep pathogenetic process. A variable combination of potential etiological factors may modulate the appearance of different clinical phenotypes detectable in individual scleroderma patients. The in-deep investigations on the SSc etiopathogenesis may provide useful insights in the broad field of human diseases characterized by diffuse microangiopathy or altered fibrogenesis.
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Affiliation(s)
- Clodoveo Ferri
- Rheumatology Unit, Medical School, University of Modena and Reggio E, University-Hospital Policlinico of Modena, Modena, Italy; Rheumatology Unit, Casa di Cura Madonna dello Scoglio, Cotronei (KR), Italy.
| | | | - Elisabetta Caselli
- Section of Microbiology, Department of Chemical, Pharmaceutical and Agricultural Sciences and LTTA, University of Ferrara, Ferrara, Italy
| | - Krystyna Zakrzewska
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Clara Maccari
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Adriana Calderaro
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Maria D'Accolti
- Section of Microbiology, Department of Chemical, Pharmaceutical and Agricultural Sciences and LTTA, University of Ferrara, Ferrara, Italy
| | - Irene Soffritti
- Section of Microbiology, Department of Chemical, Pharmaceutical and Agricultural Sciences and LTTA, University of Ferrara, Ferrara, Italy
| | - Rosaria Arvia
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Gianluca Sighinolfi
- Rheumatology Unit, Medical School, University of Modena and Reggio E, University-Hospital Policlinico of Modena, Modena, Italy.
| | - Erica Artoni
- Rheumatology Unit, Medical School, University of Modena and Reggio E, University-Hospital Policlinico of Modena, Modena, Italy
| | - Dilia Giuggioli
- Rheumatology Unit, Medical School, University of Modena and Reggio E, University-Hospital Policlinico of Modena, Modena, Italy
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Blanco-Pérez JJ, Blanco-Dorado S, Rodríguez-García J, Gonzalez-Bello ME, Salgado-Barreira Á, Caldera-Díaz AC, Pallarés-Sanmartín A, Fernandez-Villar A, González-Barcala FJ. Serum levels of inflammatory mediators as prognostic biomarker in silica exposed workers. Sci Rep 2021; 11:13348. [PMID: 34172787 PMCID: PMC8233419 DOI: 10.1038/s41598-021-92587-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 06/07/2021] [Indexed: 11/10/2022] Open
Abstract
Silicosis is a diffuse interstitial lung disease caused by sustained inhalation of silica and silicates. Several cytokines are activated by their inhalation and can mediate the process of pulmonary fibrosis. The identification of biomarkers could allow an early diagnosis before the development of radiological alterations and help monitor the evolution of patients. The objetive of this study was to determine the clinical significance of specific biomarkers, to estimate their association with the development, severity and/or progression of silicosis, and identify determinants of this evolution. We conducted a prospective observational study in patients attending the pulmonology clinic from 2009 to 2018. Serum levels of the following inflammatory mediators were assessed: interleukin-6 (IL-6), interleukin 2 receptor subunit alpha (IL2R) interleukin 1 beta (IL1B), interleukin-8 (IL-8), tumour necrosis factor-alpha (TNF-α), transforming growth factor-beta1 (TGF-β1), alpha-1 antitrypsin (AAT), C-reactive protein (CRP), lactate dehydrogenase (LDH) and ferritin in subjects exposed to silica, with and without silicosis. Association between those inflammatory mediators with lung function measurements and radiological severity of disease and their impact on prognosis were analysed. 337 exposed to silica (278 with silicosis) and 30 subjects in the control group were included. IL-8, α1AT, ferritin, CRP and LDH levels were higher in silicosis than in those exposed to silica without silicosis. IL-8, LDH and AAT levels were associated with progression of silicosis and IL-6, IL-8, LDH, AAT, ferritin, and CRP with vital status. The results of the ROC analysis indicated the potential of IL-8 as a biomarker in the presence of silicosis and for the prediction of mortality.
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Affiliation(s)
- José Jesús Blanco-Pérez
- Department of Pneumonology, University Hospital Complex of Vigo, Pontevedra, Spain. .,IRIDIS Group (Investigation in Rheumatology and Immuno-Mediated Diseases) Galicia Sur Health Research Institute (IIS Galicia Sur), Vigo, Spain.
| | - Sara Blanco-Dorado
- Department of Pharmacy, University Hospital Complex of Santiago de Compostela, Santiago de Compostela, Spain
| | - Javier Rodríguez-García
- Department of Clinical Analysis, University Hospital Complex of Santiago de Compostela (CHUS)-SERGAS, Santiago de Compostela, Spain.,Instituto de Investigación Sanitaria (IDIS), Santiago de Compostela, Spain
| | | | - Ángel Salgado-Barreira
- Methodology and Statistics Unit, Galicia Sur Health Research Institute (IIS Galicia Sur), Vigo, Spain
| | | | | | | | - Francisco Javier González-Barcala
- Department of Pneumonology, University Hospital Complex of Santiago de Compostela, Spanish Biomedical Research Networking Centre-CIBERES, Santiago de Compostela, Spain
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5
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Liu K, Mu M, Fang K, Qian Y, Xue S, Hu W, Ye M. Occupational exposure to silica and risk of heart disease: a systematic review with meta-analysis. BMJ Open 2020; 10:e029653. [PMID: 31915156 PMCID: PMC6955526 DOI: 10.1136/bmjopen-2019-029653] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE To search for evidence of the relationship between occupational silica exposure and heart disease. DESIGN A systematic review and meta-analysis. BACKGROUND Growing evidence suggests a relationship between occupational silica exposure and heart disease; however, the link between them is less clear. DATA SOURCES PubMed, ScienceDirect, Springer and EMBASE were searched for articles published between 1 January 1995 and 20 June 2019. Articles that investigated the effects of occupational silica exposure on the risk of heart disease were considered. STUDY SELECTION We included cohort studies, including prospective, retrospective and retroprospective studies. DATA EXTRACTION AND SYNTHESIS We extracted data using a piloted data collection form and conducted random-effects meta-analysis and exposure-response analysis. The meta-relative risk (meta-RR), a measure of the average ratio of heart disease rates in those with and without silica exposure, was used as an inverse variance-weighted average of relative risks from the individual studies. The Newcastle-Ottawa Quality Assessment Scale for cohort studies was used for study quality assessment. OUTCOME MEASURE We calculated the risk of heart diseases such as pulmonary heart disease, ischaemic heart disease and others. RESULTS Twenty cohort studies were included. The results suggest a significant increase in the risk of overall heart disease (meta-RR=1.08, 95% CI 1.03 to 1.13). Stronger evidence of association with pulmonary heart disease was found in the risk estimate of both categories of heart disease (meta-RR=1.24, 95% CI 1.08 to 1.43) and in the exposure-response analysis (meta-RR=1.39, 95% CI 1.19 to 1.62). Our subgroup analyses also revealed that the statistical heterogeneity among studies could be attributed mainly to the diversity in reference group, occupation and study quality score. CONCLUSIONS Silica-exposed workers are at an increased risk for overall heart disease, especially pulmonary heart disease. Further research is needed to better clarify the relationship between occupational silica exposure and ischaemic heart disease. PROSPERO REGISTRATION NUMBER CRD42019124673.
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Affiliation(s)
- Kai Liu
- Department of Biomarkers and Molecular Epidemiology, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Min Mu
- Department of Public Health, School of Medicine, Anhui University of Science and Technology, Huainan, Anhui, China
| | - Kehong Fang
- Department of Nutritional Epidemiology, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yuanyuan Qian
- Department of Biomarkers and Molecular Epidemiology, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Song Xue
- Department of Orthopaedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weijiang Hu
- Department of Occupational Epidemiology, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Meng Ye
- Department of Biomarkers and Molecular Epidemiology, National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
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Brilland B, Beauvillain C, Mazurkiewicz G, Rucay P, Roquelaure Y, Tabiasco J, Vinatier E, Riou J, Jeannin P, Renier G, Subra JF, Augusto JF. T Cell Dysregulation in Non-silicotic Silica Exposed Workers: A Step Toward Immune Tolerance Breakdown. Front Immunol 2019; 10:2743. [PMID: 31824514 PMCID: PMC6883424 DOI: 10.3389/fimmu.2019.02743] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 11/08/2019] [Indexed: 12/26/2022] Open
Abstract
Background: Chronic silica exposure can lead to silicosis, complicated or not by autoimmune diseases (AID). The pathophysiology of silica-induced AID remains not fully understood, especially immune mechanisms that may develop in patients without yet established silicosis. We conducted a prospective clinical study to analyze the impact of crystalline silica (CS) on T cell phenotype and regulatory T cells (Tregs) frequency, as well as on auto-antibodies development in non-silicotic workers exposed to CS. Methods: Workers with moderate to high exposure level to CS and aged between 30 and 60 years-old were considered for inclusion. Peripheral blood mononuclear cells were analyzed by flow cytometry. Auto-antibodies were screened in serum by immunofluorescence. Blood from 42 and 45 healthy subjects (HC) was used as control for T cell phenotype and serum analyses, respectively. Results: Among the 63 included workers exposed to CS, 55 had full data available and were analyzed. Ten were exposed to CS for <5 years, 18 for 5–10 years and 27 for more than 10 years. The frequency of Tregs (CD4+CD25+CD127−FoxP3+) was significantly lower in CS exposed workers as compared to HC. We found an increased expression of the activation marker HLA-DR on T cells (CD3+, CD4+, and CD8+) of CS exposed workers as compared to HC. Tregs to activated T cells ratio was also lower in exposed subjects. In the latter, HLA-DR expression level and Tregs frequency were significantly associated with CS exposure duration. Serum autoantibody detection was significantly higher in CS exposed workers as compared to HC. Especially, among workers exposed more than 10 years, antinuclear antibodies and ANCA were detected in 44 and 22% among them, as compared to 5 and 2.5% in HC, respectively. Conclusion: This work shows that CS exposure is associated with a decrease of Tregs frequency, an increase of T cell activation status, and a tolerance breakdown against auto-antigens. These results show that alterations of the T cell compartment can be detected early over the course of CS exposure, preceding silicosis development or AID onset.
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Affiliation(s)
- Benoit Brilland
- Service de Néphrologie-Dialyse-Transplantation, CHU d'Angers, Angers, France.,CRCINA, INSERM, Université de Nantes, Université d'Angers, Angers, France
| | - Céline Beauvillain
- CRCINA, INSERM, Université de Nantes, Université d'Angers, Angers, France.,Laboratoire d'Immunologie et d'Allergologie, CHU d'Angers, Angers, France
| | - Gery Mazurkiewicz
- Service Santé au Travail Côte de Lumière, Les Sables-d'Olonne, France
| | - Pierre Rucay
- Service de Médecine du Travail, CHU d'Angers, Angers, France
| | - Yves Roquelaure
- Service de Médecine du Travail, CHU d'Angers, Angers, France
| | - Julie Tabiasco
- CRCINA, INSERM, Université de Nantes, Université d'Angers, Angers, France
| | - Emeline Vinatier
- CRCINA, INSERM, Université de Nantes, Université d'Angers, Angers, France.,Laboratoire d'Immunologie et d'Allergologie, CHU d'Angers, Angers, France
| | - Jérémie Riou
- MINT, UNIV Angers, INSERM 1066, CNRS 6021, IBS- CHU, Angers, France
| | - Pascale Jeannin
- CRCINA, INSERM, Université de Nantes, Université d'Angers, Angers, France.,Laboratoire d'Immunologie et d'Allergologie, CHU d'Angers, Angers, France
| | - Gilles Renier
- Laboratoire d'Immunologie et d'Allergologie, CHU d'Angers, Angers, France
| | - Jean-François Subra
- Service de Néphrologie-Dialyse-Transplantation, CHU d'Angers, Angers, France.,CRCINA, INSERM, Université de Nantes, Université d'Angers, Angers, France
| | - Jean-François Augusto
- Service de Néphrologie-Dialyse-Transplantation, CHU d'Angers, Angers, France.,CRCINA, INSERM, Université de Nantes, Université d'Angers, Angers, France
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Ronsmans S, Verbeken EK, Adams E, Keirsbilck S, Yserbyt J, Wuyts WA, Swennen R, Hoet PHM, Nemery B. Granulomatous lung disease in two workers making light bulbs. Am J Ind Med 2019; 62:908-913. [PMID: 31347732 DOI: 10.1002/ajim.23030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/27/2019] [Accepted: 07/03/2019] [Indexed: 01/17/2023]
Abstract
BACKGROUND Associations between sarcoidosis or sarcoid-like granulomatous lung disease and exposure to silica and other inorganic agents have been suggested in several studies. CASES We describe granulomatous lung disease in two workers of a small production unit making metal-halide lamps. Initially, both were diagnosed with sarcoidosis. However, in both men, birefringent particles were observed in the lung or mediastinal lymph node biopsies. Clipping of glass tubes led to moderate exposure to dust, consisting mainly of amorphous fused silica, with some cristobalite. After removal from exposure, both subjects improved clinically, radiologically, and functionally. CONCLUSION The present cases support the hypothesis that silica might be a trigger for sarcoid-like granulomatous lung disease. Sarcoidosis should be considered a diagnosis of exclusion and clinicians should carefully collect occupational and environmental exposure histories to identify workplace triggers.
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Affiliation(s)
- Steven Ronsmans
- Department of Pulmonary Medicine, Clinic of Occupational and Environmental MedicineUniversity Hospitals Leuven Leuven Belgium
- Department of Public Health and Primary Care, Centre for Environment and HealthUniversity of Leuven Leuven Belgium
| | - Eric K Verbeken
- Department of PathologyUniversity Hospitals Leuven Leuven Belgium
| | - Els Adams
- Department of Pulmonary Medicine, Clinic of Occupational and Environmental MedicineUniversity Hospitals Leuven Leuven Belgium
- IDEWEExternal Service for Prevention and Protection at Work Leuven Belgium
| | - Stephan Keirsbilck
- Department of Pulmonary Medicine, Clinic of Occupational and Environmental MedicineUniversity Hospitals Leuven Leuven Belgium
- IDEWEExternal Service for Prevention and Protection at Work Leuven Belgium
| | - Jonas Yserbyt
- Department of Pulmonary Medicine, Unit for Interstitial Lung DiseasesUniversity Hospitals Leuven Leuven Belgium
| | - Wim A Wuyts
- Department of Pulmonary Medicine, Unit for Interstitial Lung DiseasesUniversity Hospitals Leuven Leuven Belgium
| | - Rudy Swennen
- Department of Earth and Environmental Science, GeologyUniversity of Leuven Leuven Belgium
| | - Peter HM Hoet
- Department of Public Health and Primary Care, Centre for Environment and HealthUniversity of Leuven Leuven Belgium
| | - Benoit Nemery
- Department of Pulmonary Medicine, Clinic of Occupational and Environmental MedicineUniversity Hospitals Leuven Leuven Belgium
- Department of Public Health and Primary Care, Centre for Environment and HealthUniversity of Leuven Leuven Belgium
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8
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A. Hegazy G, Shaker O, Sayed S, Elzaher AA, Fathy K, Wahby I, Elsamanoudy A, Mustafa HN. Biomarkers of Systemic Lupus Erythematosus and Systemic Sclerosis diseases activity in a sample of Egyptian patients :Soluble Intercellular Adhesion Molecule-1 and Soluble Interleukin-2 Receptor, Case Control Study. BIOMEDICAL & PHARMACOLOGY JOURNAL 2019; 12:1207-1216. [DOI: 10.13005/bpj/1750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Systemic Lupus Erythematosus (SLE) and systemic sclerosis (SSc) are systemic inflammatory autoimmune disorders characterized by a large spectrum of clinical and laboratory features. The aim of the present study was to investigate the possible use of serum level of soluble intercellular adhesion molecule-1(sICAM-1) and soluble interleukin-2 receptor (sIL-2Ra) as biomarkers for monitoring of SLE and SSc disease activity. Moreover, it aimed to compare the specificity and sensitivity as well as cut-off value of both biomarkers in a sample of Egyptian patients. 50 SLE patients, 30 SSc patients and 60 age and sex matched healthy controls were enrolled in our study. sICAM-1and sIL-2Ra were measured in serum samples obtained from all participants. In addition to Erythosedimentation rate (ESR), complete blood count (CBC), Antineuclearantibodies (ANA) estimation, disease activity of both diseases were also assessed. sICAM-1and sIL-2Ra levels were higher in SLE and SSc patients versus control. Both parameters are correlated with each other as well as the activity parameters. A cut-off levels of 455.59 (ng/ml) &2525935 (pg/ml) in both SLE & SSs respectively was observed with the highest specificity and sensitivity. It could be concluded that sICAM-1 and sIL-2Ra are noninvasive biomarkers for SLE and SSc that could play a pathophysiologic role in development and progression of both diseases. Moreover, sICAM-1 and sIL-2Ra are correlated with the disease activity at cut-off values of 455.59 (ng/ml) & 2525935(pg/ml) respectively.
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Affiliation(s)
- Gehan A. Hegazy
- Clinical Biochemistry Department, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia. 2Medical Biochemistry Department, National Research Centre, Cairo, Egypt
| | - Olfat Shaker
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Cairo University, Egypt
| | - Safaa Sayed
- Rheumatology and Rehabilitation Department, Cairo University, Cairo, Egypt
| | - Amr Abd Elzaher
- Internal Medicine Department, Ain Shams University, Cairo, Egypt
| | - Khaled Fathy
- Internal Medicine Department, Ain Shams University, Cairo, Egypt
| | - Iman Wahby
- Family and Community Medicine Department, Rabigh, King Abdul Aziz University, Saudi Arabia. 7Community and Occupational Health Department, Al Azhar University, Faculty of Medicine, Egypt
| | - Ayman Elsamanoudy
- Clinical Biochemistry Department, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia. Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Hesham N. Mustafa
- Anatomy Department, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
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Eleftheriadis T, Pissas G, Zarogiannis S, Liakopoulos V, Stefanidis I. Crystalline silica activates the T-cell and the B-cell antigen receptor complexes and induces T-cell and B-cell proliferation. Autoimmunity 2019; 52:136-143. [PMID: 31119949 DOI: 10.1080/08916934.2019.1614171] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Silicosis is an occupational fibrotic lung disease, which is associated with an increased incidence of autoimmune diseases. The effect of crystalline silica on the immune system is thought to be mediated by the antigen presenting cells. However, the direct effect of silica on T-cells and B-cells has not been evaluated adequately. For this purpose, CD4(+)T-cells and B-cells from 10 healthy individuals were isolated and cultured with or without Min-U-Sil 5. Cell proliferation was assessed with BrdU assay. In cell proliferation experiments, tacrolimus, an inhibitor of the signal transduction derived from the activation of the T-cell or the B-cell antigen receptor (BCR) complex, was also used. The levels of phosphorylated zeta and phosphorylated Igα, indicative of the T-cell and BCR complex activation respectively, and of the transcription factor c-Myc, required for cell proliferation, were assessed by Western blotting. Crystalline silica triggered CD4(+)T-cell and B-cell proliferation, while tacrolimus significantly decreased the silica-induced proliferation in both cell types. Crystalline silica enhanced the level of phosphorylated zeta and phosphorylated Igα in CD4(+)T-cells and B-cells, respectively. In both cell types, treatment with silica increased c-Myc expression. Thus, crystalline silica may induce T-cell and B-cell proliferation by activating T-cell and BCR complexes. It is likely that the direct activation of CD4(+)T-cells and B-cells by silica crystals detected in this study circumvents many self-tolerance check-points and offers a mechanistic explanation for the crystalline silica-induced autoimmune diseases.
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Affiliation(s)
| | - Georgios Pissas
- a Department of Nephrology, Faculty of Medicine , University of Thessaly , Larissa , Greece
| | - Sotirios Zarogiannis
- a Department of Nephrology, Faculty of Medicine , University of Thessaly , Larissa , Greece
| | - Vassilios Liakopoulos
- a Department of Nephrology, Faculty of Medicine , University of Thessaly , Larissa , Greece
| | - Ioannis Stefanidis
- a Department of Nephrology, Faculty of Medicine , University of Thessaly , Larissa , Greece
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10
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Ferri C, Artoni E, Sighinolfi GL, Luppi F, Zelent G, Colaci M, Giuggioli D. High serum levels of silica nanoparticles in systemic sclerosis patients with occupational exposure: Possible pathogenetic role in disease phenotypes. Semin Arthritis Rheum 2018; 48:475-481. [DOI: 10.1016/j.semarthrit.2018.06.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 05/31/2018] [Accepted: 06/18/2018] [Indexed: 12/31/2022]
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11
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Huaux F. Emerging Role of Immunosuppression in Diseases Induced by Micro- and Nano-Particles: Time to Revisit the Exclusive Inflammatory Scenario. Front Immunol 2018; 9:2364. [PMID: 30510551 PMCID: PMC6252316 DOI: 10.3389/fimmu.2018.02364] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 09/24/2018] [Indexed: 12/21/2022] Open
Abstract
Fibrosis, cancer, and autoimmunity developing upon particle exposure have been exclusively linked with uncontrolled inflammatory processes. The critical role of inflammation is now challenged by several contradictory observations indicating that the emergence of these chronic disorders may result from non-inflammatory events. A growing number of studies reveals that micro- and nano-particles can cause exaggerated and persistent immunosuppression characterized by the release of potent anti-inflammatory cytokines (IL-10 and TGF-β), and the recruitment of major regulatory immune cells (M2 macrophages, T and B regs, and MDSC). This persistent immunosuppressive environment is initially established to limit early inflammation but contributes later to fibrosis, cancer, and infection. Immunosuppression promotes fibroblast proliferation and matrix element synthesis and subverts innate and adaptive immune surveillance against tumor cells and microorganisms. This review details the contribution of immunosuppressive cells and their derived immunoregulatory mediators and delineates the mutual role of inflammatory vs. immunosuppressive mechanisms in the pathogenesis of chronic diseases induced by particles. The consideration of these new results explains how particle-related diseases can develop independently of chronic inflammation, enriches current bioassays predicting particle toxicity and suggests new clinical strategies for treating patients affected by particle-associated diseases.
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Affiliation(s)
- François Huaux
- Louvain Centre for Toxicology and Applied Pharmacology, Institut de Recherche Experimentale et Clinique, Université catholique de Louvain, Brussels, Belgium
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12
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Bates MA, Akbari P, Gilley KN, Wagner JG, Li N, Kopec AK, Wierenga KA, Jackson-Humbles D, Brandenberger C, Holian A, Benninghoff AD, Harkema JR, Pestka JJ. Dietary Docosahexaenoic Acid Prevents Silica-Induced Development of Pulmonary Ectopic Germinal Centers and Glomerulonephritis in the Lupus-Prone NZBWF1 Mouse. Front Immunol 2018; 9:2002. [PMID: 30258439 PMCID: PMC6143671 DOI: 10.3389/fimmu.2018.02002] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 08/14/2018] [Indexed: 12/27/2022] Open
Abstract
Ectopic lymphoid structures (ELS) consist of B-cell and T-cell aggregates that are initiated de novo in inflamed tissues outside of secondary lymphoid organs. When organized within follicular dendritic cell (FDC) networks, ELS contain functional germinal centers that can yield autoantibody-secreting plasma cells and promote autoimmune disease. Intranasal instillation of lupus-prone mice with crystalline silica (cSiO2), a respirable particle linked to human lupus, triggers ELS formation in the lung, systemic autoantibodies, and early onset of glomerulonephritis. Here we tested the hypothesis that consumption of docosahexaenoic acid (DHA), an ω-3 polyunsaturated fatty acid with anti-inflammatory properties, influences the temporal profile of cSiO2-induced pulmonary ectopic germinal center formation and development of glomerulonephritis. Female NZBWF1 mice (6-wk old) were fed purified isocaloric diets supplemented with 0, 4, or 10 g/kg DHA - calorically equivalent to 0, 2, or 5 g DHA per day consumption by humans, respectively. Beginning at age 8 wk, mice were intranasally instilled with 1 mg cSiO2, or saline vehicle alone, once per wk, for 4 wk. Cohorts were sacrificed 1, 5, 9, or 13 wk post-instillation (PI) of the last cSiO2 dose, and lung and kidney lesions were investigated by histopathology. Tissue fatty acid analyses confirmed uniform dose-dependent DHA incorporation across all cohorts. As early as 1 wk PI, inflammation comprising of B (CD45R+) and T (CD3+) cell accumulation was observed in lungs of cSiO2-treated mice compared to vehicle controls; these responses intensified over time. Marked follicular dendritic cell (FDC; CD21+/CD35+) networking appeared at 9 and 13 wk PI. IgG+ plasma cells suggestive of mature germinal centers were evident at 13 wk. DHA supplementation dramatically suppressed cSiO2-triggered B-cell, T-cell, FDC, and IgG+ plasma cell appearance in the lungs as well as anti-dsDNA IgG in bronchial lavage fluid and plasma over the course of the experiment. cSiO2 induced glomerulonephritis with concomitant B-cell accumulation in the renal cortex at 13 wk PI but this response was abrogated by DHA feeding. Taken together, realistic dietary DHA supplementation prevented initiation and/or progression of ectopic lymphoid neogenesis, germinal center development, systemic autoantibody elevation, and resultant glomerulonephritis in this unique preclinical model of environment-triggered lupus.
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Affiliation(s)
- Melissa A Bates
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States.,Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
| | - Peyman Akbari
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States.,Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States.,Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI, United States
| | - Kristen N Gilley
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
| | - James G Wagner
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI, United States
| | - Ning Li
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI, United States
| | - Anna K Kopec
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States.,Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI, United States
| | - Kathryn A Wierenga
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States.,Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, United States
| | - Daven Jackson-Humbles
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI, United States
| | | | - Andrij Holian
- Department of Biomedical and Pharmaceutical Sciences, Center for Environmental Health Sciences, University of Montana, Missoula, MT, United States
| | - Abby D Benninghoff
- Department of Animal, Dairy and Veterinary Sciences, School of Veterinary Medicine, Utah State University, Logan, UT, United States
| | - Jack R Harkema
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States.,Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, MI, United States
| | - James J Pestka
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States.,Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States.,Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, United States
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13
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Farris BY, Antonini JM, Fedan JS, Mercer RR, Roach KA, Chen BT, Schwegler-Berry D, Kashon ML, Barger MW, Roberts JR. Pulmonary toxicity following acute coexposures to diesel particulate matter and α-quartz crystalline silica in the Sprague-Dawley rat. Inhal Toxicol 2017; 29:322-339. [PMID: 28967277 PMCID: PMC6545482 DOI: 10.1080/08958378.2017.1361487] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The effects of acute pulmonary coexposures to silica and diesel particulate matter (DPM), which may occur in various mining operations, were investigated in vivo. Rats were exposed by intratracheal instillation (IT) to silica (50 or 233 µg), DPM (7.89 or 50 µg) or silica and DPM combined in phosphate-buffered saline (PBS) or to PBS alone (control). At one day, one week, one month, two months and three months postexposure bronchoalveolar lavage and histopathology were performed to assess lung injury, inflammation and immune response. While higher doses of silica caused inflammation and injury at all time points, DPM exposure alone did not. DPM (50 µg) combined with silica (233 µg) increased inflammation at one week and one-month postexposure and caused an increase in the incidence of fibrosis at one month compared with exposure to silica alone. To assess susceptibility to lung infection following coexposure, rats were exposed by IT to 233 µg silica, 50 µg DPM, a combination of the two or PBS control one week before intratracheal inoculation with 5 × 105 Listeria monocytogenes. At 1, 3, 5, 7 and 14 days following infection, pulmonary immune response and bacterial clearance from the lung were evaluated. Coexposure to DPM and silica did not alter bacterial clearance from the lung compared to control. Although DPM and silica coexposure did not alter pulmonary susceptibility to infection in this model, the study showed that noninflammatory doses of DPM had the capacity to increase silica-induced lung injury, inflammation and onset/incidence of fibrosis.
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Affiliation(s)
- Breanne Y. Farris
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
- School of Medicine, West Virginia University, Morgantown, WV, USA
| | - James M. Antonini
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
- School of Pharmacy, West Virginia University, Morgantown, WV, USA
| | - Jeffrey S. Fedan
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
- School of Medicine, West Virginia University, Morgantown, WV, USA
- School of Pharmacy, West Virginia University, Morgantown, WV, USA
| | - Robert R. Mercer
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Katherine A. Roach
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
- School of Pharmacy, West Virginia University, Morgantown, WV, USA
| | - Bean T. Chen
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | | | - Michael L. Kashon
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Mark W. Barger
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - Jenny R. Roberts
- National Institute for Occupational Safety and Health, Morgantown, WV, USA
- School of Medicine, West Virginia University, Morgantown, WV, USA
- School of Pharmacy, West Virginia University, Morgantown, WV, USA
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14
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Keil D, Buck B, Goossens D, Teng Y, Leetham M, Murphy L, Pollard J, Eggers M, McLaurin B, Gerads R, DeWitt J. Immunotoxicological and neurotoxicological profile of health effects following subacute exposure to geogenic dust from sand dunes at the Nellis Dunes Recreation Area, Las Vegas, NV. Toxicol Appl Pharmacol 2015; 291:1-12. [PMID: 26644169 DOI: 10.1016/j.taap.2015.11.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 11/10/2015] [Accepted: 11/27/2015] [Indexed: 11/27/2022]
Abstract
Exposure to geogenic particulate matter (PM) comprised of mineral particles has been linked to human health effects. However, very little data exist on health effects associated with geogenic dust exposure in natural settings. Therefore, we characterized particulate matter size, metal chemistry, and health effects of dust collected from the Nellis Dunes Recreation Area (NDRA), a popular off-road vehicle area located near Las Vegas, NV. Adult female B6C3F1 mice were exposed to several concentrations of mineral dust collected from active and vegetated sand dunes in NDRA. Dust samples (median diameter: 4.4 μm) were suspended in phosphate-buffered saline and delivered at concentrations ranging from 0.01 to 100 mg dust/kg body weight by oropharyngeal aspiration. ICP-MS analyses of total dissolution of the dust resulted in aluminum (55,090 μg/g), vanadium (70 μg/g), chromium (33 μg/g), manganese (511 μg/g), iron (21,600 μg/g), cobalt (9.4 μg/g), copper (69 μg/g), zinc (79 μg/g), arsenic (62 μg/g), strontium (620 μg/g), cesium (13 μg/g), lead 25 μg/g) and uranium (4.7 μg/g). Arsenic was present only as As(V). Mice received four exposures, once/week over 28-days to mimic a month of weekend exposures. Descriptive and functional assays to assess immunotoxicity and neurotoxicity were performed 24 h after the final exposure. The primary observation was that 0.1 to 100 mg/kg of this sand dune derived dust dose-responsively reduced antigen-specific IgM antibody responses, suggesting that dust from this area of NDRA may present a potential health risk.
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Affiliation(s)
- Deborah Keil
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59717, USA.
| | - Brenda Buck
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154, USA
| | - Dirk Goossens
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154, USA; Geography Research Group, Department of Earth and Environmental Sciences, KU Leuven, Belgium
| | - Yuanxin Teng
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154, USA
| | - Mallory Leetham
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59717, USA
| | - Lacey Murphy
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59717, USA
| | - James Pollard
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154, USA
| | - Margaret Eggers
- Center for Biofilm Engineering, Montana State University, Bozeman, MT 59717, USA
| | - Brett McLaurin
- Department of Environmental, Geographical, and Geological Sciences, Bloomsburg University of Pennsylvania, Bloomsburg, PA 17815, USA
| | | | - Jamie DeWitt
- Department of Pharmacology and Toxicology, East Carolina University, Greenville, NC 27834, USA
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15
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Bates MA, Brandenberger C, Langohr I, Kumagai K, Harkema JR, Holian A, Pestka JJ. Silica Triggers Inflammation and Ectopic Lymphoid Neogenesis in the Lungs in Parallel with Accelerated Onset of Systemic Autoimmunity and Glomerulonephritis in the Lupus-Prone NZBWF1 Mouse. PLoS One 2015; 10:e0125481. [PMID: 25978333 PMCID: PMC4433215 DOI: 10.1371/journal.pone.0125481] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Accepted: 03/18/2015] [Indexed: 01/02/2023] Open
Abstract
Genetic predisposition and environmental factors influence the development of human autoimmune disease. Occupational exposure to crystalline silica (cSiO2) has been etiologically linked to increased incidence of autoimmunity, including systemic lupus erythematosus (SLE), but the underlying mechanisms are poorly understood. The purpose of this study was to test the hypothesis that early repeated short-term cSiO2 exposure will modulate both latency and severity of autoimmunity in the lupus-prone female NZBWF1 mouse. Weekly intranasal exposure to cSiO2 (0.25 and 1.0 mg) for 4 wk beginning at 9 wk of age both reduced latency and increased intensity of glomerulonephritis. cSiO2 elicited robust inflammatory responses in the lungs as evidenced by extensive perivascular and peribronchial lymphoplasmacytic infiltration consisting of IgG-producing plasma cells, and CD45R+ and CD3+ lymphocytes that were highly suggestive of ectopic lymphoid tissue (ELT). In addition, there were elevated concentrations of immunoglobulins and the cytokines MCP-1, TNF-α and IL-6 in bronchoalveolar lavage fluid. cSiO2-associated kidney and lung effects paralleled dose-dependent elevations of autoantibodies and proinflammatory cytokines in plasma. Taken together, cSiO2-induced pulmonary inflammation and ectopic lymphoid neogenesis in the NZBWF1 mouse corresponded closely to systemic inflammatory and autoimmune responses as well as the early initiation of pathological outcomes in the kidney. These findings suggest that following airway exposure to crystalline silica, in mice genetically prone to SLE, the lung serves as a platform for triggering systemic autoimmunity and glomerulonephritis.
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Affiliation(s)
- Melissa A. Bates
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, United States of America
- Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan, United States of America
| | - Christina Brandenberger
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, Michigan, United States of America
- Functional and Applied Anatomy, Hannover Medical School, Hannover, Germany
| | - Ingeborg Langohr
- Department of Pathobiological Studies, School of Veterinary Medicine, Louisiana State University, Baton Rogue, Louisiana, United States of America
| | - Kazuyoshi Kumagai
- Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan, United States of America
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, Michigan, United States of America
| | - Jack R. Harkema
- Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan, United States of America
- Department of Pathobiology and Diagnostic Investigation, Michigan State University, East Lansing, Michigan, United States of America
| | - Andrij Holian
- Center for Environmental Health Sciences, University of Montana, Missoula, Montana, United States of America
| | - James J. Pestka
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, United States of America
- Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan, United States of America
- * E-mail:
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16
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Hilhorst M, van Paassen P, Tervaert JWC. Proteinase 3-ANCA Vasculitis versus Myeloperoxidase-ANCA Vasculitis. J Am Soc Nephrol 2015; 26:2314-27. [PMID: 25956510 DOI: 10.1681/asn.2014090903] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
In patients with GN or vasculitis, ANCAs are directed against proteinase 3 (PR3) or myeloperoxidase (MPO). The differences between PR3-ANCA-associated vasculitis (AAV) and MPO-AAV described in the past have been supplemented during the last decade. In this review, we discuss the differences between these two small-vessel vasculitides, focusing especially on possible etiologic and pathophysiologic differences. PR3-AAV is more common in northern parts of the world, whereas MPO-AAV is more common in southern regions of Europe, Asia, and the Pacific, with the exception of New Zealand and Australia. A genetic contribution has been extensively studied, and there is a high prevalence of the HLA-DPB1*04:01 allele in patients with PR3-AAV as opposed to patients with MPO-AAV and/or healthy controls. Histologically, MPO-AAV and PR3-AAV are similar but show qualitative differences when analyzed carefully. Clinically, both serotypes are difficult to distinguish, but quantitative differences are present. More organs are affected in PR3-AAV, whereas renal limited vasculitis occurs more often in patients with MPO-AAV. For future clinical trials, we advocate classifying patients by ANCA serotype as opposed to the traditional disease type classification.
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Affiliation(s)
- Marc Hilhorst
- Clinical and Experimental Immunology, Maastricht University, Maastricht, The Netherlands
| | - Pieter van Paassen
- Clinical and Experimental Immunology, Maastricht University, Maastricht, The Netherlands
| | - Jan Willem Cohen Tervaert
- Clinical and Experimental Immunology, Maastricht University, Maastricht, The Netherlands jw.cohentervaert@maastrichtuniversity
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