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Palamidas DA, Chatzis L, Papadaki M, Gissis I, Kambas K, Andreakos E, Goules AV, Tzioufas AG. Current Insights into Tissue Injury of Giant Cell Arteritis: From Acute Inflammatory Responses towards Inappropriate Tissue Remodeling. Cells 2024; 13:430. [PMID: 38474394 DOI: 10.3390/cells13050430] [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: 01/31/2024] [Revised: 02/25/2024] [Accepted: 02/27/2024] [Indexed: 03/14/2024] Open
Abstract
Giant cell arteritis (GCA) is an autoimmune disease affecting large vessels in patients over 50 years old. It is an exemplary model of a classic inflammatory disorder with IL-6 playing the leading role. The main comorbidities that may appear acutely or chronically are vascular occlusion leading to blindness and thoracic aorta aneurysm formation, respectively. The tissue inflammatory bulk is expressed as acute or chronic delayed-type hypersensitivity reactions, the latter being apparent by giant cell formation. The activated monocytes/macrophages are associated with pronounced Th1 and Th17 responses. B-cells and neutrophils also participate in the inflammatory lesion. However, the exact order of appearance and mechanistic interactions between cells are hindered by the lack of cellular and molecular information from early disease stages and accurate experimental models. Recently, senescent cells and neutrophil extracellular traps have been described in tissue lesions. These structures can remain in tissues for a prolonged period, potentially favoring inflammatory responses and tissue remodeling. In this review, current advances in GCA pathogenesis are discussed in different inflammatory phases. Through the description of these-often overlapping-phases, cells, molecules, and small lipid mediators with pathogenetic potential are described.
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Affiliation(s)
- Dimitris Anastasios Palamidas
- Department of Pathophysiology, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Loukas Chatzis
- Department of Pathophysiology, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Laboratory of Immunobiology, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Maria Papadaki
- Laboratory of Immunobiology, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Ilias Gissis
- Department of Thoracic and Cardiovascular Surgery, Evangelismos General Hospital, 11473 Athens, Greece
| | - Konstantinos Kambas
- Laboratory of Molecular Genetics, Department of Immunology, Hellenic Pasteur Institute, 11521 Athens, Greece
| | - Evangelos Andreakos
- Laboratory of Immunobiology, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Andreas V Goules
- Department of Pathophysiology, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Laboratory of Immunobiology, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Athanasios G Tzioufas
- Department of Pathophysiology, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Laboratory of Immunobiology, Center for Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
- Research Institute for Systemic Autoimmune Diseases, 11527 Athens, Greece
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2
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Deshayes S, Baugé C, Dupont PA, Simard C, Rida H, de Boysson H, Manrique A, Aouba A. [ 18F]FDG PET-MR characterization of aortitis in the IL1rn -/- mouse model of giant-cell arteritis. EJNMMI Res 2023; 13:103. [PMID: 38019303 PMCID: PMC10687326 DOI: 10.1186/s13550-023-01039-5] [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: 07/07/2023] [Accepted: 10/01/2023] [Indexed: 11/30/2023] Open
Abstract
BACKGROUND Metabolic imaging is routinely used to demonstrate aortitis in patients with giant-cell arteritis. We aimed to investigate the preclinical model of aortitis in BALB/c IL1rn-/- mice using [18F]fluorodeoxyglucose ([18F]FDG) positron emission tomography-magnetic resonance (PET-MR), gamma counting and immunostaining. We used 15 first-generation specific and opportunistic pathogen-free (SOPF) 9-week-old IL1rn-/- mice, 15 wild-type BALB/cAnN mice and 5 s-generation specific pathogen-free (SPF) 9-week-old IL1rn-/-. Aortic [18F]FDG uptake was assessed as the target-to-background ratio (TBR) using time-of-flight MR angiography as vascular landmarks. RESULTS [18F]FDG uptake measured by PET or gamma counting was similar in the first-generation SOPF IL1rn-/- mice and the wild-type group (p > 0.05). However, the first-generation IL1rn-/- mice exhibited more interleukin-1β (p = 0.021)- and interleukin-6 (p = 0.019)-positive cells within the abdominal aorta than the wild-type mice. In addition, the second-generation SPF group exhibited significantly higher TBR (p = 0.0068) than the wild-type mice on the descending thoracic aorta, unlike the first-generation SOPF IL1rn-/- mice. CONCLUSIONS In addition to the involvement of interleukin-1β and -6 in IL1rn-/- mouse aortitis, this study seems to validate [18F]FDG PET-MR as a useful tool for noninvasive monitoring of aortitis in this preclinical model.
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Affiliation(s)
- Samuel Deshayes
- Department of Internal Medicine and Clinical Immunology, Normandie University, UNICAEN, CHU de Caen Normandie - Université Basse Normandie, Avenue de la Côte de Nacre, 14000, CAEN, France.
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France.
| | - Caroline Baugé
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France
| | | | - Christophe Simard
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France
| | - Hanan Rida
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France
| | - Hubert de Boysson
- Department of Internal Medicine and Clinical Immunology, Normandie University, UNICAEN, CHU de Caen Normandie - Université Basse Normandie, Avenue de la Côte de Nacre, 14000, CAEN, France
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France
| | - Alain Manrique
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France
- Department of Nuclear Medicine, Normandie University, UNICAEN, CHU de Caen Normandie, Caen, France
| | - Achille Aouba
- Department of Internal Medicine and Clinical Immunology, Normandie University, UNICAEN, CHU de Caen Normandie - Université Basse Normandie, Avenue de la Côte de Nacre, 14000, CAEN, France.
- Normandie University, UNICAEN, CHU de Caen Normandie, UR4650 PSIR, Caen, France.
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Kermani TA, Byram K. Isolated Aortitis: Workup and Management. Rheum Dis Clin North Am 2023; 49:523-543. [PMID: 37331731 DOI: 10.1016/j.rdc.2023.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
The finding of aortitis, often incidentally noted on surgical resection, should prompt evaluation for secondary causes including large-vessel vasculitis. In a large proportion of cases, no other inflammatory cause is identified and the diagnosis of clinically isolated aortitis is made. It is unknown whether this entity represents a more localized form of large-vessel vasculitis. The need for immunosuppressive therapy in patients with clinically isolated aortitis remains unclear. Patients with clinically isolated aortitis warrant imaging of the entire aorta at baseline and regular intervals because a significant proportion of patients have or develop abnormalities in other vascular beds.
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Affiliation(s)
- Tanaz A Kermani
- Division of Rheumatology, University of California Los Angeles, 2020 Santa Monica Boulevard, Suite 540, Santa Monica, CA 90404, USA.
| | - Kevin Byram
- Division of Rheumatology and Immunology, Vanderbilt University Medical Center, 1161 21st Avenue South, T3113, MCN, Nashville, TN 37232, USA
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Manabe Y, Ishibashi T, Asano R, Tonomura S, Maeda Y, Motooka D, Ueda J, Yanagawa M, Edamoto-Taira Y, Chikaishi-Kirino T, Masaki T, Inagaki T, Nakamura S, Katada Y, Okazawa M, Narazaki M, Ogo T, Kumanogoh A, Nakaoka Y. Gut dysbiosis is associated with aortic aneurysm formation and progression in Takayasu arteritis. Arthritis Res Ther 2023; 25:46. [PMID: 36964623 PMCID: PMC10037851 DOI: 10.1186/s13075-023-03031-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 03/16/2023] [Indexed: 03/26/2023] Open
Abstract
BACKGROUND Takayasu arteritis (TAK) is an autoimmune large vessel vasculitis that affects the aorta and its major branches, eventually leading to the development of aortic aneurysm and vascular stenosis or occlusion. This retrospective and prospective study aimed to investigate whether the gut dysbiosis exists in patients with TAK and to identify specific gut microorganisms related to aortic aneurysm formation/progression in TAK. METHODS We analysed the faecal microbiome of 76 patients with TAK and 56 healthy controls (HCs) using 16S ribosomal RNA sequencing. We examined the relationship between the composition of the gut microbiota and clinical parameters. RESULTS The patients with TAK showed an altered gut microbiota with a higher abundance of oral-derived bacteria, such as Streptococcus and Campylobacter, regardless of the disease activity, than HCs. This increase was significantly associated with the administration of a proton pump inhibitor used for preventing gastric ulcers in patients treated with aspirin and glucocorticoids. Among patients taking a proton pump inhibitor, Campylobacter was more frequently detected in those who underwent vascular surgeries and endovascular therapy for aortic dilatation than in those who did not. Among the genus of Campylobacter, Campylobacter gracilis in the gut microbiome was significantly associated with clinical events related to aortic aneurysm formation/worsening in patients with TAK. In a prospective analysis, patients with a gut microbiome positive for Campylobacter were significantly more likely to require interventions for aortic dilatation than those who were negative for Campylobacter. Furthermore, patients with TAK who were positive for C. gracilis by polymerase chain reaction showed a tendency to have severe aortic aneurysms. CONCLUSIONS A specific increase in oral-derived Campylobacter in the gut may be a novel predictor of aortic aneurysm formation/progression in patients with TAK.
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Affiliation(s)
- Yusuke Manabe
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1, Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
- Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Tomohiko Ishibashi
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1, Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Ryotaro Asano
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1, Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
- Division of Pulmonary Circulation, Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Shuichi Tonomura
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1, Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Yuichi Maeda
- Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, Suita, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Japan
| | - Daisuke Motooka
- Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Jin Ueda
- Division of Pulmonary Circulation, Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Masahiro Yanagawa
- Department of Diagnostic and Interventional Radiology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yuko Edamoto-Taira
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1, Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Tomomi Chikaishi-Kirino
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1, Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Takeshi Masaki
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1, Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Tadakatsu Inagaki
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1, Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Shota Nakamura
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Japan
| | - Yoshinori Katada
- Department of Respiratory Medicine and Rheumatology, Suita Municipal Hospital, Suita, Japan
| | - Makoto Okazawa
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1, Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan
| | - Masashi Narazaki
- Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, Suita, Japan
- Department of Advanced Clinical and Translational Immunology, Osaka University Graduate School of Medicine, Suita, Japan
- Department of Immunopathology, WPI, Immunology Frontier Research Center (iFReC), Osaka University, Suita, Japan
| | - Takeshi Ogo
- Division of Pulmonary Circulation, Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Atsushi Kumanogoh
- Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, Suita, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Japan
- Department of Immunopathology, WPI, Immunology Frontier Research Center (iFReC), Osaka University, Suita, Japan
- Center for Infectious Disease for Education and Research (CiDER), Osaka University, Suita, Japan
- Japan Agency for Medical Research and Development - Core Research for Evolutional Science and Technology (AMED-CREST), Osaka University, Suita, Japan
- Center for Advanced Modalities and DDS (CAMaD), Osaka University, Suita, Japan
| | - Yoshikazu Nakaoka
- Department of Vascular Physiology, National Cerebral and Cardiovascular Center Research Institute, 6-1, Kishibe-Shimmachi, Suita, Osaka, 564-8565, Japan.
- Department of Cardiovascular Medicine, Graduate School of Medicine, Osaka University, Suita, Japan.
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5
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Fan L, Chen J, Pan L, Xin X, Geng B, Yang L, Wang Q, Ma W, Lou Y, Bian J, Cui X, Li J, Wang L, Chen Z, Wang W, Cui C, Li S, Gao Q, Song Q, Deng Y, Fan J, Yu J, Zhang H, Li Y, Cai J. Alterations of Gut Microbiome, Metabolome, and Lipidome in Takayasu Arteritis. Arthritis Rheumatol 2023; 75:266-278. [PMID: 36054683 DOI: 10.1002/art.42331] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 07/27/2022] [Accepted: 08/11/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Mounting evidence has linked microbiome and metabolome to systemic autoimmunity and cardiovascular diseases (CVDs). Takayasu arteritis (TAK) is a rare disease that shares features of immune-related inflammatory diseases and CVDs, about which there is relatively limited information. This study was undertaken to characterize gut microbial dysbiosis and its crosstalk with phenotypes in TAK. METHODS To address the discriminatory signatures, we performed shotgun sequencing of fecal metagenome across a discovery cohort (n = 97) and an independent validation cohort (n = 75) including TAK patients, healthy controls, and controls with Behçet's disease (BD). Interrogation of untargeted metabolomics and lipidomics profiling of plasma and fecal samples were also used to refine features mediating associations between microorganisms and TAK phenotypes. RESULTS A combined model of bacterial species, including unclassified Escherichia, Veillonella parvula, Streptococcus parasanguinis, Dorea formicigenerans, Bifidobacterium adolescentis, Lachnospiraceae bacterium 7 1 58FAA, Escherichia coli, Streptococcus salivarius, Klebsiella pneumoniae, Bifidobacterium longum, and Lachnospiraceae Bacterium 5 1 63FAA, distinguished TAK patients from controls with areas under the curve (AUCs) of 87.8%, 85.9%, 81.1%, and 71.1% in training, test, and validation sets including healthy or BD controls, respectively. Diagnostic species were directly or indirectly (via metabolites or lipids) correlated with TAK phenotypes of vascular involvement, inflammation, discharge medication, and prognosis. External validation against publicly metagenomic studies (n = 184) on hypertension, atrial fibrillation, and healthy controls, confirmed the diagnostic accuracy of the model for TAK. CONCLUSION This study first identifies the discriminatory gut microbes in TAK. Dysbiotic microbes are also linked to TAK phenotypes directly or indirectly via metabolic and lipid modules. Further explorations of the microbiome-metagenome interface in TAK subtype prediction and pathogenesis are suggested.
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Affiliation(s)
- Luyun Fan
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Junru Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macao, China, and Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
| | - Lili Pan
- Department of Rheumatology and Immunology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xiaohong Xin
- Department of Nephrology, Precision Medicine Center, The Affiliated People's Hospital of Shanxi Medical University, Shanxi Provincial People's Hospital, Taiyuan, China
| | - Bin Geng
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lirui Yang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Qian Wang
- Department of Nephrology, Precision Medicine Center, The Affiliated People's Hospital of Shanxi Medical University, Shanxi Provincial People's Hospital, Taiyuan, China
| | - Wenjun Ma
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ying Lou
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jin Bian
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiao Cui
- Department of Cardiology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jing Li
- Heart Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing Key Laboratory of Hypertension, Beijing, China
| | - Lu Wang
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhenzhen Chen
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wenjie Wang
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Changting Cui
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shuangyue Li
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qiannan Gao
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qirui Song
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yue Deng
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiali Fan
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiachen Yu
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Huimin Zhang
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yafeng Li
- Department of Nephrology, Shanxi Provincial People's Hospital (Fifth Hospital) of Shanxi Medical University, Core Laboratory, Shanxi Provincial People's Hospital (Fifth Hospital) of Shanxi Medical University, Shanxi Provincial Key Laboratory of Kidney Disease, and Academy of Microbial Ecology, Shanxi Medical University, Taiyuan, China
| | - Jun Cai
- State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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6
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Robert M, Chépeaux LA, Glasson Y, Dumé AS, Sannier A, Papo T, Bonnefoy N, Michaud HA, Sacré K. Comprehensive analysis of cell lineages involved in giant cell arteritis pathogenesis using highly multiplexed imaging mass cytometry. Clin Exp Rheumatol 2023; 22:103216. [PMID: 36280094 DOI: 10.1016/j.autrev.2022.103216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 10/16/2022] [Accepted: 10/18/2022] [Indexed: 12/27/2022]
Affiliation(s)
- Marie Robert
- Service de Médecine Interne, Hôpital Bichat, Assistance Publique - Hôpitaux de Paris (AP-HP), Paris, France
| | - Laure-Agnès Chépeaux
- Plateforme de Cytométrie et d'Imagerie de Masse de Montpellier, IRCM, INSERM, Univ Montpellier, ICM, Montpellier, France
| | - Yael Glasson
- Plateforme de Cytométrie et d'Imagerie de Masse de Montpellier, IRCM, INSERM, Univ Montpellier, ICM, Montpellier, France
| | - Anne-Sophie Dumé
- Plateforme de Cytométrie et d'Imagerie de Masse de Montpellier, IRCM, INSERM, Univ Montpellier, ICM, Montpellier, France
| | - Aurélie Sannier
- Service d'Anatomopathologie, Hôpital Bichat, Assistance Publique - Hôpitaux de Paris (AP-HP), Paris, France
| | - Thomas Papo
- Service de Médecine Interne, Hôpital Bichat, Assistance Publique - Hôpitaux de Paris (AP-HP), Paris, France
| | - Nathalie Bonnefoy
- Plateforme de Cytométrie et d'Imagerie de Masse de Montpellier, IRCM, INSERM, Univ Montpellier, ICM, Montpellier, France
| | - Henri-Alexandre Michaud
- Plateforme de Cytométrie et d'Imagerie de Masse de Montpellier, IRCM, INSERM, Univ Montpellier, ICM, Montpellier, France.
| | - Karim Sacré
- Service de Médecine Interne, Hôpital Bichat, Assistance Publique - Hôpitaux de Paris (AP-HP), Paris, France; Plateforme de Cytométrie et d'Imagerie de Masse de Montpellier, IRCM, INSERM, Univ Montpellier, ICM, Montpellier, France; Université Paris Cité, Centre de Recherche sur l'Inflammation, INSERM UMR1149, CNRS ERL8252, Faculté de Médecine site Bichat, Laboratoire d'Excellence Inflamex, Paris, France.
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7
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Sun B, He X, Zhang W. Findings on the Relationship Between Intestinal Microbiome and Vasculitis. Front Cell Infect Microbiol 2022; 12:908352. [PMID: 35832383 PMCID: PMC9271958 DOI: 10.3389/fcimb.2022.908352] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/23/2022] [Indexed: 01/30/2023] Open
Abstract
The microbiome has been implicated in small-, medium-, large-, and variable-vessel vasculitis. Dysbiosis can frequently be found in vasculitis patients with altered microbial diversity and abundance, compared with those with other diseases and healthy controls. Dominant bacteria discovered in different studies vary greatly, but in general, the intestinal microbiome in vasculitis patients tends to contain more pathogenic and less beneficial bacteria. Improvement or resolution of dysbiosis has been observed after treatment in a few longitudinal studies. In addition, some molecular changes in intestinal permeability and immune response have been found in animal models of vasculitis diseases.
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Affiliation(s)
- Boyuan Sun
- Department of Rheumatology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
- M.D. Program, Peking Union Medical College, Beijing, China
| | - Xin He
- Department of Rheumatology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
- M.D. Program, Peking Union Medical College, Beijing, China
| | - Wen Zhang
- Department of Rheumatology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases, State Key Laboratory of Complex Severe and Rare Diseases, Beijing, China
- *Correspondence: Wen Zhang,
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8
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La Barbera L, Macaluso F, Fasano S, Grasso G, Ciccia F, Guggino G. Microbiome Changes in Connective Tissue Diseases and Vasculitis: Focus on Metabolism and Inflammation. Int J Mol Sci 2022; 23:ijms23126532. [PMID: 35742974 PMCID: PMC9224234 DOI: 10.3390/ijms23126532] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/31/2022] [Accepted: 06/06/2022] [Indexed: 02/04/2023] Open
Abstract
The microbial community acts as an active player in maintaining homeostasis and immune functions through a continuous and changeable cross-talk with the host immune system. Emerging evidence suggests that altered microbial composition, known as dysbiosis, might perturb the delicate balance between the microbiota and the immune system, triggering inflammation and potentially contributing to the pathogenesis and development of chronic inflammatory diseases. This review will summarize the current evidence about the microbiome-immunity cross-talk, especially focusing on the microbiota alterations described in patients with rheumatic diseases and on the recent findings concerning the interaction between microbiota, metabolic function, and the immune system.
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Affiliation(s)
- Lidia La Barbera
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Rheumatology Section, University of Palermo, Piazza delle Cliniche 2, 90110 Palermo, Italy; (L.L.B.); (G.G.)
| | - Federica Macaluso
- Rheumatology Unit, Department of Internal Medicine, University of Modena and Reggio Emilia, AUSL-IRCCS, Via Giovanni Amendola, 2, 42122 Reggio Emilia, Italy;
- Division of Rheumatology, Department of Precision Medicine, University of Campania Luigi Vanvitelli, S. Andrea delle Dame, Via L. De Crecchio 7, 80138 Naples, Italy; (S.F.); (F.C.)
| | - Serena Fasano
- Division of Rheumatology, Department of Precision Medicine, University of Campania Luigi Vanvitelli, S. Andrea delle Dame, Via L. De Crecchio 7, 80138 Naples, Italy; (S.F.); (F.C.)
| | - Giulia Grasso
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Rheumatology Section, University of Palermo, Piazza delle Cliniche 2, 90110 Palermo, Italy; (L.L.B.); (G.G.)
| | - Francesco Ciccia
- Division of Rheumatology, Department of Precision Medicine, University of Campania Luigi Vanvitelli, S. Andrea delle Dame, Via L. De Crecchio 7, 80138 Naples, Italy; (S.F.); (F.C.)
| | - Giuliana Guggino
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Rheumatology Section, University of Palermo, Piazza delle Cliniche 2, 90110 Palermo, Italy; (L.L.B.); (G.G.)
- Correspondence: ; Tel.: +39-091-655-2148
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9
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Niccolai E, Bettiol A, Baldi S, Silvestri E, Di Gloria L, Bello F, Nannini G, Ricci F, Nicastro M, Ramazzotti M, Vaglio A, Bartolucci G, Emmi G, Amedei A, Prisco D. Gut Microbiota and Associated Mucosal Immune Response in Eosinophilic Granulomatosis with Polyangiitis (EGPA). Biomedicines 2022; 10:biomedicines10061227. [PMID: 35740247 PMCID: PMC9219964 DOI: 10.3390/biomedicines10061227] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/19/2022] [Accepted: 05/19/2022] [Indexed: 02/06/2023] Open
Abstract
Eosinophilic granulomatosis with polyangiitis (EGPA) is an anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis. A genome-wide association study showed a correlation between ANCA-negative EGPA and variants of genes encoding proteins with intestinal barrier functions, suggesting that modifications of the mucosal layer and consequent gut dysbiosis might be involved in EGPA pathogenesis. Here, we characterized the gut microbiota (GM) composition and the intestinal immune response in a cohort of EGPA patients. Faeces from 29 patients and 9 unrelated healthy cohabitants were collected, and GM and derived metabolites’ composition were compared. Seven intestinal biopsies from EGPA patients with gastrointestinal manifestations were analysed to assess the T-cell distribution and its correlation with GM and EGPA clinical and laboratory features. No significant differences in GM composition, nor in the total amount of faecal metabolites, emerged between patients and controls. Nevertheless, differences in bacterial taxa abundances and compositional GM-derived metabolites profile were observed. Notably, an enrichment of potential pathobionts (Enterobacteriacee and Streptococcaceae) was found in EGPA, particularly in patients with active disease, while lower levels were found in patients on immunosuppression, compared with non-immunosuppressed ones. Significantly lower amounts of hexanoic acid were found in patients, compared to controls. The analysis of the immune response in the gut mucosa revealed a high frequency of IFN-γ/IL-17-producing T lymphocytes, and a positive correlation between EGPA disease activity and intestinal T-cell levels. Our data suggest that an enrichment in potential intestinal pathobionts might drive an imbalanced inflammatory response in EGPA.
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Affiliation(s)
- Elena Niccolai
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy; (E.N.); (A.B.); (S.B.); (E.S.); (F.B.); (G.N.); (D.P.)
| | - Alessandra Bettiol
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy; (E.N.); (A.B.); (S.B.); (E.S.); (F.B.); (G.N.); (D.P.)
| | - Simone Baldi
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy; (E.N.); (A.B.); (S.B.); (E.S.); (F.B.); (G.N.); (D.P.)
| | - Elena Silvestri
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy; (E.N.); (A.B.); (S.B.); (E.S.); (F.B.); (G.N.); (D.P.)
- Internal Interdisciplinary Medicine Unit, Careggi University Hospital, 50134 Florence, Italy
| | - Leandro Di Gloria
- Department of Biomedical, Experimental and Clinical Sciences “Mario Serio” University of Florence, 50134 Florence, Italy; (L.D.G.); (M.R.); (A.V.)
| | - Federica Bello
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy; (E.N.); (A.B.); (S.B.); (E.S.); (F.B.); (G.N.); (D.P.)
- Internal Interdisciplinary Medicine Unit, Careggi University Hospital, 50134 Florence, Italy
| | - Giulia Nannini
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy; (E.N.); (A.B.); (S.B.); (E.S.); (F.B.); (G.N.); (D.P.)
| | - Federica Ricci
- Core Research Laboratory, Institute for Cancer Research and Prevention (ISPRO), 50139 Florence, Italy;
| | - Maria Nicastro
- Department of Medicine and Surgery, University of Parma and Unit of Occupational Medicine and Industrial Toxicology, University Hospital of Parma, 43121 Parma, Italy;
| | - Matteo Ramazzotti
- Department of Biomedical, Experimental and Clinical Sciences “Mario Serio” University of Florence, 50134 Florence, Italy; (L.D.G.); (M.R.); (A.V.)
| | - Augusto Vaglio
- Department of Biomedical, Experimental and Clinical Sciences “Mario Serio” University of Florence, 50134 Florence, Italy; (L.D.G.); (M.R.); (A.V.)
- Nephrology Unit, Meyer Children’s Hospital, 50139 Florence, Italy
| | - Gianluca Bartolucci
- Department of Neurosciences, Psychology, Drug Research and Child Health Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, 50139 Florence, Italy;
| | - Giacomo Emmi
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy; (E.N.); (A.B.); (S.B.); (E.S.); (F.B.); (G.N.); (D.P.)
- Internal Interdisciplinary Medicine Unit, Careggi University Hospital, 50134 Florence, Italy
- Correspondence: (G.E.); (A.A.); Tel.: +39-05-5275-8020 (G.E.); +39-05-5275-8330 (A.A.)
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy; (E.N.); (A.B.); (S.B.); (E.S.); (F.B.); (G.N.); (D.P.)
- Internal Interdisciplinary Medicine Unit, Careggi University Hospital, 50134 Florence, Italy
- Correspondence: (G.E.); (A.A.); Tel.: +39-05-5275-8020 (G.E.); +39-05-5275-8330 (A.A.)
| | - Domenico Prisco
- Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy; (E.N.); (A.B.); (S.B.); (E.S.); (F.B.); (G.N.); (D.P.)
- Internal Interdisciplinary Medicine Unit, Careggi University Hospital, 50134 Florence, Italy
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10
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New Insights into the Pathogenesis of Giant Cell Arteritis: Mechanisms Involved in Maintaining Vascular Inflammation. J Clin Med 2022; 11:jcm11102905. [PMID: 35629030 PMCID: PMC9143803 DOI: 10.3390/jcm11102905] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 05/16/2022] [Accepted: 05/19/2022] [Indexed: 02/04/2023] Open
Abstract
The giant cell arteritis (GCA) pathophysiology is complex and multifactorial, involving a predisposing genetic background, the role of immune aging and the activation of vascular dendritic cells by an unknown trigger. Once activated, dendritic cells recruit CD4 T cells and induce their activation, proliferation and polarization into Th1 and Th17, which produce interferon-gamma (IFN-γ) and interleukin-17 (IL-17), respectively. IFN-γ triggers the production of chemokines by vascular smooth muscle cells, which leads to the recruitment of additional CD4 and CD8 T cells and also monocytes that differentiate into macrophages. Recent data have shown that IL-17, IFN-γ and GM-CSF induce the differentiation of macrophage subpopulations, which play a role in the destruction of the arterial wall, in neoangiogenesis or intimal hyperplasia. Under the influence of different mediators, mainly endothelin-1 and PDGF, vascular smooth muscle cells migrate to the intima, proliferate and change their phenotype to become myofibroblasts that further proliferate and produce extracellular matrix proteins, increasing the vascular stenosis. In addition, several defects in the immune regulatory mechanisms probably contribute to chronic vascular inflammation in GCA: a defect in the PD-1/PD-L1 pathway, a quantitative and qualitative Treg deficiency, the implication of resident cells, the role of GM-CSF and IL-6, the implication of the NOTCH pathway and the role of mucosal‑associated invariant T cells and tissue‑resident memory T cells.
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11
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Berthelot JM, Lioté F, Sibilia J. Tissue microbiota: a 'secondary-self', first target of autoimmunity? Joint Bone Spine 2021; 89:105337. [PMID: 34968748 DOI: 10.1016/j.jbspin.2021.105337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/07/2021] [Indexed: 10/19/2022]
Affiliation(s)
- Jean-Marie Berthelot
- Rheumatology Department, Nantes University Hospital, Hôtel-Dieu, Place Alexis-Ricordeau, 44093, Nantes Cedex 01, France.
| | - Frédéric Lioté
- Rheumatology Department & Inserm UMR 1132 (centre Viggo Petersen), Hôpital Lariboisière, 2 rue Ambroise Paré, F-75010 Paris, France; Université de Paris, UFR de Médecine, F-75010 Paris, France
| | - Jean Sibilia
- Service de rhumatologie, Hôpitaux Universitaires de Strasbourg, F-67000 Strasbourg, France; RESO: Centre de Référence des Maladies Autoimmunes Systémiques Rares Est Sud-Ouest, France; INSERM UMR_S1109, Université de Strasbourg, F-67000 Strasbourg, France
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12
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Functionally Heterogenous Macrophage Subsets in the Pathogenesis of Giant Cell Arteritis: Novel Targets for Disease Monitoring and Treatment. J Clin Med 2021; 10:jcm10214958. [PMID: 34768479 PMCID: PMC8585092 DOI: 10.3390/jcm10214958] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/20/2021] [Accepted: 10/23/2021] [Indexed: 12/19/2022] Open
Abstract
Giant cell arteritis (GCA) is a granulomatous large-vessel vasculitis that affects adults above 50 years of age. In GCA, circulating monocytes are recruited to the inflamed arteries. With cues from the vascular microenvironment, they differentiate into macrophages and play important roles in the pathogenesis of GCA via pro-inflammatory cytokine production and vascular remodeling. However, a deeper understanding of macrophage heterogeneity in GCA pathogenesis is needed to assist the development of novel diagnostic tools and targeted therapies. Here, we review the current knowledge on macrophage heterogeneity and diverse functions of macrophage subsets in the pathogenesis of GCA. We next discuss the possibility to exploit their heterogeneity as a source of novel biomarkers and as targets for nuclear imaging. Finally, we discuss novel macrophage-targeted therapies and future directions for targeting these cells in GCA.
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Abstract
PURPOSE OF REVIEW To summarize recent evidence regarding the presence and potential role of the microbiome in systemic vasculitides. RECENT FINDINGS Microbiomic descriptions are now available in patients with small, medium and large vessel vasculitis. The majority of studies have evaluated gastrointestinal inhabitants, with a smaller number of studies describing the nasal, pulmonary or vascular microbiomes. Most published studies are observational and cross-sectional. Dysbiosis is seen frequently in vasculitis patients with reduced microbial diversity observed in nasal, fecal and vascular samples compared with disease and/or healthy controls. Predominant bacteria vary, but overall, patients with vasculitis tend to have more pathogenic and less commensal bacteria in active disease. In the few longitudinal studies available, improvement or resolution of dysbiosis has been observed following vasculitis treatment and improved disease activity. SUMMARY Dysbiosis and reduced microbial diversity has been identified in patients with small, medium and large vessel vasculitis. Although limited data suggests microbiomes may 'normalize' following immunosuppression, cause or effect cannot be determined. It is hypothesized that microbial disruption in a genetically susceptible individual may trigger excessive host immune activation and vasculitis; however, larger studies with longitudinal and translational design are needed to further our current understanding.
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14
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Desbois AC, Ciocan D, Saadoun D, Perlemuter G, Cacoub P. Specific microbiome profile in Takayasu's arteritis and giant cell arteritis. Sci Rep 2021; 11:5926. [PMID: 33723291 PMCID: PMC7961033 DOI: 10.1038/s41598-021-84725-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 12/29/2020] [Indexed: 12/13/2022] Open
Abstract
Recent studies have provided evidence of a close link between specific microbiota and inflammatory disorders. While the vessel wall microbiota has been recently described in large vessel vasculitis (LVV) and controls, the blood microbiome in these diseases has not been previously reported (LVV). We aimed to analyse the blood microbiome profile of LVV patients (Takayasu’s arteritis [TAK], giant cell arteritis [GCA]) and healthy blood donors (HD). We studied the blood samples of 13 patients with TAK (20 samples), 9 patients with GCA (11 samples) and 15 HD patients. We assessed the blood microbiome profile by sequencing the 16S rDNA blood bacterial DNA. We used linear discriminant analysis (LDA) coupled with linear discriminant effect size measurement (LEfSe) to investigate the differences in the blood microbiome profile between TAK and GCA patients. An increase in the levels of Clostridia, Cytophagia and Deltaproteobacteria and a decrease in Bacilli at the class level were found in TAK patients compared with HD patients (LDA > 2, p < 0.05). Active TAK patients had significantly lower levels of Staphylococcus compared with inactive TAK patients. Samples of GCA patients had an increased abundance of Rhodococcus and an unidentified member of the Cytophagaceae family. Microbiota of TAK compared with GCA patients was found to show higher levels of Candidatus Aquiluna and Cloacibacterium (LDA > 2; p < 0.05). Differences highlighted in the blood microbiome were also associated with a shift of bacterial predicted metabolic functions in TAK in comparison with HD. Similar results were also found in patients with active versus inactive TAK. In conclusion, patients with TAK were found to present a specific blood microbiome profile in comparison with healthy donors and GCA subjects. Significant changes in the blood microbiome profiles of TAK patients were associated with specific metabolic functions.
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Affiliation(s)
- Anne Claire Desbois
- INSERM, UMR_S 959, Inflammation-Immunopathology-Biotherapy Department, Sorbonne Université, UPMC University of Paris, Paris, France. .,Department of Internal Medicine and Clinical Immunology, AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Paris, France. .,Department of Internal Medicine and Laboratory I3 "Immunology, Immunopathology, Immunotherapy" UMR 7211 (CNRS/UPMC) INSERM U959, Hôpital Pitié-Salpêtrière, 47-83 boulevard de l'Hôpital, 75013, Paris, France.
| | - Dragos Ciocan
- INSERM U996, Inflammation Chemokines and Immunopathology, DHU Hépatinov, Faculté de Médecine-Univ Paris-Sud, Université Paris-Saclay, Clamart, France.,APHP-Hepatogastroenterology and Nutrition, Hôpital Antoine-Béclère, Clamart, France
| | - David Saadoun
- INSERM, UMR_S 959, Inflammation-Immunopathology-Biotherapy Department, Sorbonne Université, UPMC University of Paris, Paris, France.,Department of Internal Medicine and Clinical Immunology, AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Gabriel Perlemuter
- INSERM U996, Inflammation Chemokines and Immunopathology, DHU Hépatinov, Faculté de Médecine-Univ Paris-Sud, Université Paris-Saclay, Clamart, France.,APHP-Hepatogastroenterology and Nutrition, Hôpital Antoine-Béclère, Clamart, France
| | - Patrice Cacoub
- INSERM, UMR_S 959, Inflammation-Immunopathology-Biotherapy Department, Sorbonne Université, UPMC University of Paris, Paris, France.,Department of Internal Medicine and Clinical Immunology, AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
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15
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Deshayes S, de Boysson H, Dumont A, Vivien D, Manrique A, Aouba A. An overview of the perspectives on experimental models and new therapeutic targets in giant cell arteritis. Autoimmun Rev 2020; 19:102636. [DOI: 10.1016/j.autrev.2020.102636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 03/30/2020] [Indexed: 12/12/2022]
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16
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Carvajal Alegria G, van Sleen Y, Graver JC, Sandovici M, Devauchelle-Pensec V, Brouwer E, Cornec D. Aortic involvement in giant cell arteritis. Joint Bone Spine 2020; 88:105045. [PMID: 32649986 DOI: 10.1016/j.jbspin.2020.06.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 06/22/2020] [Indexed: 12/25/2022]
Affiliation(s)
- Guillermo Carvajal Alegria
- UMR 1227 « Lymphocytes B et Autoimmunité », Inserm, Labex IGO, University of Brest, Brest, France; Rheumatology department, CERAINO « Centre de référence des maladies auto-immunes rares », CHRU Cavale Blanche, Brest, France
| | - Yannick van Sleen
- Vasculitis Expertise Center Groningen, Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jacoba Carolien Graver
- Vasculitis Expertise Center Groningen, Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Maria Sandovici
- Vasculitis Expertise Center Groningen, Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Valérie Devauchelle-Pensec
- UMR 1227 « Lymphocytes B et Autoimmunité », Inserm, Labex IGO, University of Brest, Brest, France; Rheumatology department, CERAINO « Centre de référence des maladies auto-immunes rares », CHRU Cavale Blanche, Brest, France
| | - Elisabeth Brouwer
- Vasculitis Expertise Center Groningen, Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Divi Cornec
- UMR 1227 « Lymphocytes B et Autoimmunité », Inserm, Labex IGO, University of Brest, Brest, France; Rheumatology department, CERAINO « Centre de référence des maladies auto-immunes rares », CHRU Cavale Blanche, Brest, France.
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17
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Abstract
Microbial contributions to the immunopathogenesis of autoimmune rheumatic diseases have been studied since the advent of germ theory in the 19th century. With the exception of Group A Streptococcus in rheumatic fever, early studies failed to establish causal relationships between specific pathobionts and rheumatic disease. Today, systemic autoimmune diseases are thought to result from a complex interplay of environmental factors, individual genetic risk, and stochastic events. Interactions of microbiota and the immune system have been shown to promote and sustain chronic inflammation and autoimmunity. In mechanistic studies, microbe-immune cell interactions have been implicated in the initiation of autoimmune rheumatic diseases, e.g., through the posttranslational modification of autoantigens in rheumatoid arthritis or through neutrophil cell death and cross-reactivity with commensal orthologs in systemic lupus erythematosus. In parallel, modern molecular techniques have catalyzed the study of the microbiome in systemic autoimmune diseases. Here, I review current insights gained into the skin, oral, gut, lung, and vascular microbiome in connective tissue diseases and vasculitis. Mechanism relevant to the development and propagation of autoimmunity will be discussed whenever explored. While studies on autoimmune rheumatic disease have almost invariably shown abnormal microbiome structure (dysbiosis), substantial variability in microbial composition between studies makes generalization difficult. Moreover, an etiopathogenic role of specific pathobionts cannot be inferred by association alone. Integrating descriptive studies of microbial communities with hypothesis-driven research informed by immunopathogenesis will be important in elucidating targetable mechanisms in preclinical and established rheumatic disease.
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Affiliation(s)
- Maximilian F Konig
- Division of Rheumatology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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