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Martinez Valenzuela L, Vidal-Alabró A, Rubio B, Antón-Pàmpols P, Gómez-Preciado F, Fulladosa X, Cruzado JM, Torras J, Lloberas N, Draibe J. Evaluating Single-Nucleotide Polymorphisms in Inflammasome Proteins and Serum Levels of IL-18 and IL-1β in Kidney Interstitial Damage in Anti-Neutrophilic Cytoplasmic Antibody-Associated Vasculitis. Int J Mol Sci 2024; 25:6479. [PMID: 38928186 PMCID: PMC11203640 DOI: 10.3390/ijms25126479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 06/03/2024] [Accepted: 06/08/2024] [Indexed: 06/28/2024] Open
Abstract
The inflammasome regulates the innate inflammatory response and is involved in autoimmune diseases. In this study, we explored the levels of IL-18 and IL-1β in serum and urine and the influence of various single-nucleotide polymorphisms (SNPs) on kidney lesions at diagnosis in patients with ANCA-associated vasculitis (AAV) and their clinical outcomes. Ninety-two patients with renal AAV were recruited, and blood and urine were collected at diagnosis. Serum and urine cytokine levels were measured by ELISA. DNA was extracted and genotyped using TaqMan assays for SNPs in several inflammasome genes. Lower serum IL-18 (p = 0.049) and the IL-18 rs187238 G-carrier genotype (p = 0.042) were associated with severe fibrosis. The IL-18 rs1946518 TT genotype was associated with an increased risk of relapse (p = 0.05), whereas GG was related to better renal outcomes (p = 0.031). The rs187238 GG genotype was identified as a risk factor for mortality within the first year after AAV diagnosis, independent of the requirement for dialysis or lung involvement (p = 0.013). We suggest that decreased cytokine levels could be a surrogate marker of scarring and chronicity of the renal lesions, together with the rs187238 GG genotype. If our results are validated, the rs1946518 TT genotype predicts the risk of relapse and renal outcomes during follow-up.
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Affiliation(s)
- Laura Martinez Valenzuela
- Nephrology Department, Bellvitge University Hospital, 08907 L'Hospitalet de Llobregat, Spain
- Experimental Nephrology Laboratory, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), 08907 L'Hospitalet de Llobregat, Spain
| | - Anna Vidal-Alabró
- Experimental Nephrology Laboratory, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), 08907 L'Hospitalet de Llobregat, Spain
- Faculty of Medicine, Bellvitge Campus, University of Barcelona, 08907 L'Hospitalet de Llobregat, Spain
| | - Belén Rubio
- Nephrology Department, Bellvitge University Hospital, 08907 L'Hospitalet de Llobregat, Spain
| | - Paula Antón-Pàmpols
- Nephrology Department, Bellvitge University Hospital, 08907 L'Hospitalet de Llobregat, Spain
- Experimental Nephrology Laboratory, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), 08907 L'Hospitalet de Llobregat, Spain
| | | | - Xavier Fulladosa
- Nephrology Department, Bellvitge University Hospital, 08907 L'Hospitalet de Llobregat, Spain
- Experimental Nephrology Laboratory, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), 08907 L'Hospitalet de Llobregat, Spain
- Faculty of Medicine, Bellvitge Campus, University of Barcelona, 08907 L'Hospitalet de Llobregat, Spain
| | - Josep Maria Cruzado
- Nephrology Department, Bellvitge University Hospital, 08907 L'Hospitalet de Llobregat, Spain
- Experimental Nephrology Laboratory, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), 08907 L'Hospitalet de Llobregat, Spain
- Faculty of Medicine, Bellvitge Campus, University of Barcelona, 08907 L'Hospitalet de Llobregat, Spain
| | - Juan Torras
- Nephrology Department, Bellvitge University Hospital, 08907 L'Hospitalet de Llobregat, Spain
- Experimental Nephrology Laboratory, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), 08907 L'Hospitalet de Llobregat, Spain
- Faculty of Medicine, Bellvitge Campus, University of Barcelona, 08907 L'Hospitalet de Llobregat, Spain
| | - Nuria Lloberas
- Experimental Nephrology Laboratory, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), 08907 L'Hospitalet de Llobregat, Spain
- Faculty of Medicine, Bellvitge Campus, University of Barcelona, 08907 L'Hospitalet de Llobregat, Spain
| | - Juliana Draibe
- Nephrology Department, Bellvitge University Hospital, 08907 L'Hospitalet de Llobregat, Spain
- Experimental Nephrology Laboratory, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), 08907 L'Hospitalet de Llobregat, Spain
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Affiliation(s)
- Stefanie Steiger
- Renal Division, Department of Medicine IV, Ludwig-Maximilians-University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
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Huang Z, Vlasschaert C, Robinson-Cohen C, Pan Y, Sun X, Lash JP, Kestenbaum B, Kelly TN. Emerging evidence on the role of clonal hematopoiesis of indeterminate potential in chronic kidney disease. Transl Res 2023; 256:87-94. [PMID: 36586535 PMCID: PMC10101890 DOI: 10.1016/j.trsl.2022.12.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/29/2022]
Abstract
Chronic kidney disease (CKD) was responsible for 1.2 million deaths globally in 2016. Despite the large and growing burden of CKD, treatment options are limited and generally only preserve kidney function. Characterizing molecular precursors to incident and progressive CKD could point to critically needed prevention and treatment strategies. Clonal hematopoiesis of indeterminate potential (CHIP) is typically characterized by the clonal expansion of blood cells carrying somatic mutations in specific driver genes. An age-related disorder, CHIP is rare in the young but common in older adults. Recent studies have identified causal associations between CHIP and atherosclerotic cardiovascular disease which are most likely mediated by inflammation, a hallmark of CKD. Animal evidence has supported causal effects of CHIP on kidney injury, inflammation, and fibrosis, providing impetus for human research. Although prospective epidemiologic studies investigating associations of CHIP with development and progression of CKD are few, intriguing findings have been reported. CHIP was significantly associated with kidney function decline and end stage kidney disease in the general population, although effect sizes were modest. Recent work suggests larger associations of CHIP with kidney disease progression in CKD patients, but further investigations in this area are needed. In addition, the accumulating literature has identified some heterogeneity in associations between CHIP and kidney endpoints across study populations, but reasons for these differences remain unclear. The current review provides an in-depth exploration into this nascent area of research, develops a conceptual framework linking CHIP to CKD, and discusses the clinical and public health implications of this work.
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Affiliation(s)
- Zhijie Huang
- Department of Epidemiology, Tulane University, New Orleans, Louisiana
| | | | - Cassianne Robinson-Cohen
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Yang Pan
- Division of Nephrology, Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Xiao Sun
- Department of Epidemiology, Tulane University, New Orleans, Louisiana; Division of Nephrology, Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - James P Lash
- Division of Nephrology, Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Bryan Kestenbaum
- Division of Nephrology, Department of Medicine, Kidney Research Institute, University of Washington, Seattle, Washington
| | - Tanika N Kelly
- Division of Nephrology, Department of Medicine, College of Medicine, University of Illinois at Chicago, Chicago, Illinois.
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Mok MY, Law KS, Kong WY, Luo CY, Asfaw ET, Chan KW, Huang FP, Lau CS, Chan GCF. Interleukin-33 Ameliorates Murine Systemic Lupus Erythematosus and Is Associated with Induction of M2 Macrophage Polarisation and Regulatory T Cells. J Innate Immun 2023; 15:485-498. [PMID: 36889298 PMCID: PMC10134067 DOI: 10.1159/000529931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 02/14/2023] [Indexed: 03/10/2023] Open
Abstract
The innate cytokine IL-33 is increasingly recognised to possess biological effects on various immune cells. We have previously demonstrated elevated serum level of soluble ST2 in patients with active systemic lupus erythematosus suggesting involvement of IL-33 and its receptor in the lupus pathogenesis. This study sought to examine the effect of exogenous IL-33 on disease activity of pre-disease lupus-prone mice and the underlying cellular mechanisms. Recombinant IL-33 was administered to MRL/lpr mice for 6 weeks, whereas control group received phosphate-buffered saline. IL-33-treated mice displayed less proteinuria, renal histological inflammatory changes, and had lower serum levels of pro-inflammatory cytokines including IL-6 and TNF-α. Renal tissue and splenic CD11b+ extracts showed features of M2 polarisation with elevated mRNA expression of Arg1, FIZZI, and reduced iNOS. These mice also had increased IL-13, ST2, Gata3, and Foxp3 mRNA expression in renal and splenic tissues. Kidneys of these mice displayed less CD11b+ infiltration, had downregulated MCP-1, and increased infiltration of Foxp3-expressing cells. Splenic CD4+ T cells showed increased ST2-expressing CD4+Foxp3+ population and reduced IFN-γ+ population. There were no differences in serum anti-dsDNA antibodies and renal C3 and IgG2a deposit in these mice. Exogenous IL-33 was found to ameliorate disease activity in lupus-prone mice with induction of M2 polarisation, Th2 response, and expansion of regulatory T cells. IL-33 likely orchestrated autoregulation of these cells through upregulation of ST2 expression.
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Affiliation(s)
- Mo Yin Mok
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China
- Department of Medicine, University of Hong Kong, Hong Kong SAR, China
| | - Ka Sin Law
- Department of Medicine, University of Hong Kong, Hong Kong SAR, China
| | - Wing Yin Kong
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China
| | - Cai Yun Luo
- Department of Paediatrics and Adolescent Medicine, University of Hong Kong, Hong Kong SAR, China
| | - Endale T. Asfaw
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong SAR, China
| | - Kwok Wah Chan
- Department of Pathology, University of Hong Kong, Hong Kong SAR, China
| | - Fang Ping Huang
- Department of Pathology, University of Hong Kong, Hong Kong SAR, China
| | - Chak Sing Lau
- Department of Medicine, University of Hong Kong, Hong Kong SAR, China
| | - Godfrey Chi Fung Chan
- Department of Paediatrics and Adolescent Medicine, University of Hong Kong, Hong Kong SAR, China
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Eleazu C, Suleiman JB, Othman ZA, Zakaria Z, Nna VU, Hussain NHN, Mohamed M. Bee bread attenuates high fat diet induced renal pathology in obese rats via modulation of oxidative stress, downregulation of NF-kB mediated inflammation and Bax signalling. Arch Physiol Biochem 2022; 128:1088-1104. [PMID: 32319823 DOI: 10.1080/13813455.2020.1752258] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
CONTEXT Global prevalence of obesity is increasing. OBJECTIVE To study the effect of bee bread (BB) on serum renal function parameters, oxidative stress, inflammatory and B-cell associated protein X (Bax) in the kidneys of high fat diet (HFD) obese rats. METHODS Thirty-six male Sprague Dawley rats were used. Control: received rat diet and water (1 mL/kg); HFD group: received HFD and water (1 mL/kg): bee bread (BB) preventive or orlistat preventive: received HFD and BB (0.5 g/kg) or HFD and orlistat (10 mg/kg); BB or orlistat treatment: received BB (0.5 g/kg) or orlistat (10 mg/kg). RESULTS HFD group had increased body weight, Body Mass Index, Lee Obesity Indices, kidney weights, malondialdehyde, inflammatory markers, Bax; decreased glutathione peroxidase, glutathione-S-transferase, superoxide dismutase, total antioxidant activity, no differences (p > .05) in food intakes, serum creatinine, sodium, potassium, chloride, catalase compared to control. CONCLUSION BB modulated most of these parameters, as corroborated by histology.
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Affiliation(s)
- Chinedum Eleazu
- Department of Chemistry, Biochemistry and Molecular Biology, Alex Ekwueme Federal University, Ndufu-Alike, Ebonyi State, Nigeria
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Joseph Bagi Suleiman
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
- Department of Science Laboratory Technology, Akanu Ibiam Federal Polytechnic, Unwana, Ebonyi State, Nigeria
| | - Zaidatul Akmal Othman
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
- Faculty of Medicine, Universiti Sultan Zainal Abidin, Kuala Terengganu, Terengganu, Malaysia
| | - Zaida Zakaria
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Victor Udo Nna
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medical Sciences, University of Calabar, Calabar, Cross River State, Nigeria
| | - Nik Hazlina Nik Hussain
- Women's Health Development Unit, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Mahaneem Mohamed
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
- Unit of Integrative Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
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Prendecki M, McAdoo SP, Turner‐Stokes T, Garcia‐Diaz A, Orriss I, Woollard KJ, Behmoaras J, Cook HT, Unwin R, Pusey CD, Aitman TJ, Tam FWK. Glomerulonephritis and autoimmune vasculitis are independent of P2RX7 but may depend on alternative inflammasome pathways. J Pathol 2022; 257:300-313. [PMID: 35239186 PMCID: PMC9322550 DOI: 10.1002/path.5890] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/10/2022] [Accepted: 02/28/2022] [Indexed: 11/09/2022]
Abstract
P2RX7, an ionotropic receptor for extracellular adenosine triphosphate (ATP), is expressed on immune cells, including macrophages, monocytes, and dendritic cells and is upregulated on nonimmune cells following injury. P2RX7 plays a role in many biological processes, including production of proinflammatory cytokines such as interleukin (IL)-1β via the canonical inflammasome pathway. P2RX7 has been shown to be important in inflammation and fibrosis and may also play a role in autoimmunity. We have developed and phenotyped a novel P2RX7 knockout (KO) inbred rat strain and, taking advantage of the human-resembling unique histopathological features of rat models of glomerulonephritis, we induced three models of disease: nephrotoxic nephritis, experimental autoimmune glomerulonephritis, and experimental autoimmune vasculitis. We found that deletion of P2RX7 does not protect rats from models of experimental glomerulonephritis or the development of autoimmunity. Notably, treatment with A-438079, a P2RX7 antagonist, was equally protective in WKY WT and P2RX7 KO rats, revealing its 'off-target' properties. We identified a novel ATP/P2RX7/K+ efflux-independent and caspase-1/8-dependent pathway for the production of IL-1β in rat dendritic cells, which was absent in macrophages. Taken together, these results comprehensively establish that inflammation and autoimmunity in glomerulonephritis is independent of P2RX7 and reveals the off-target properties of drugs previously known as selective P2RX7 antagonists. Rat mononuclear phagocytes may be able to utilise an 'alternative inflammasome' pathway to produce IL-1β independently of P2RX7, which may account for the susceptibility of P2RX7 KO rats to inflammation and autoimmunity in glomerulonephritis. © 2022 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Maria Prendecki
- Centre for Inflammatory Disease, Department of Immunology and InflammationImperial College London, Hammersmith CampusLondonUK
| | - Stephen P McAdoo
- Centre for Inflammatory Disease, Department of Immunology and InflammationImperial College London, Hammersmith CampusLondonUK
| | - Tabitha Turner‐Stokes
- Centre for Inflammatory Disease, Department of Immunology and InflammationImperial College London, Hammersmith CampusLondonUK
| | - Ana Garcia‐Diaz
- Centre for Inflammatory Disease, Department of Immunology and InflammationImperial College London, Hammersmith CampusLondonUK
| | - Isabel Orriss
- Department of Comparative Biomedical SciencesRoyal Veterinary CollegeLondonUK
| | - Kevin J Woollard
- Centre for Inflammatory Disease, Department of Immunology and InflammationImperial College London, Hammersmith CampusLondonUK,Present address:
Bioscience Renal, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZenecaCambridgeUK
| | - Jacques Behmoaras
- Centre for Inflammatory Disease, Department of Immunology and InflammationImperial College London, Hammersmith CampusLondonUK,Programme in Cardiovascular and Metabolic Disorders and Centre for Computational Biology, Duke‐NUS Medical School SingaporeSingapore
| | - H Terence Cook
- Centre for Inflammatory Disease, Department of Immunology and InflammationImperial College London, Hammersmith CampusLondonUK
| | - Robert Unwin
- Department of Renal Medicine, Division of MedicineUniversity College LondonLondonUK,Present address:
Early Clinical Development, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZenecaCambridgeUK
| | - Charles D Pusey
- Centre for Inflammatory Disease, Department of Immunology and InflammationImperial College London, Hammersmith CampusLondonUK
| | - Timothy J Aitman
- Centre for Genomic & Experimental MedicineInstitute of Genetics and Molecular Medicine, University of EdinburghEdinburghUK
| | - Frederick WK Tam
- Centre for Inflammatory Disease, Department of Immunology and InflammationImperial College London, Hammersmith CampusLondonUK
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Linke A, Tiegs G, Neumann K. Pathogenic T-Cell Responses in Immune-Mediated Glomerulonephritis. Cells 2022; 11:cells11101625. [PMID: 35626662 PMCID: PMC9139939 DOI: 10.3390/cells11101625] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/04/2022] [Accepted: 05/06/2022] [Indexed: 12/17/2022] Open
Abstract
Glomerulonephritis (GN) comprises a group of immune-mediated kidney diseases affecting glomeruli and the tubulointerstitium. Glomerular crescent formation is a histopathological characteristic of severe forms of GN, also referred to as crescentic GN (cGN). Based on histological findings, cGN includes anti-neutrophil cytoplasmic antibody (ANCA)-associated GN, a severe form of ANCA-associated vasculitis, lupus nephritis associated with systemic lupus erythematosus, Goodpasture’s disease, and IgA nephropathy. The immunopathogenesis of cGN is associated with activation of CD4+ and CD8+ T cells, which particularly accumulate in the periglomerular and tubulointerstitial space but also infiltrate glomeruli. Clinical observations and functional studies in pre-clinical animal models provide evidence for a pathogenic role of Th1 and Th17 cell-mediated immune responses in cGN. Emerging evidence further argues that CD8+ T cells have a role in disease pathology and the mechanisms of activation and function of recently identified tissue-resident CD4+ and CD8+ T cells in cGN are currently under investigation. This review summarizes the mechanisms of pathogenic T-cell responses leading to glomerular damage and renal inflammation in cGN. Advanced knowledge of the underlying immune mechanisms involved with cGN will enable the identification of novel therapeutic targets for the replacement or reduction in standard immunosuppressive therapy or the treatment of refractory disease.
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Affiliation(s)
- Alexandra Linke
- Institute of Experimental Immunology and Hepatology, Center of Experimental Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany;
- Hamburg Center for Translational Immunology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
| | - Gisa Tiegs
- Institute of Experimental Immunology and Hepatology, Center of Experimental Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany;
- Hamburg Center for Translational Immunology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
- Correspondence: (G.T.); (K.N.); Tel.: +49-40-741058731 (G.T.); +49-40-741058738 (K.N.)
| | - Katrin Neumann
- Institute of Experimental Immunology and Hepatology, Center of Experimental Medicine, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany;
- Hamburg Center for Translational Immunology, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
- Correspondence: (G.T.); (K.N.); Tel.: +49-40-741058731 (G.T.); +49-40-741058738 (K.N.)
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Silva JBNF, Calcia TBB, Silva CP, Guilherme RF, Almeida-Souza F, Lemos FS, Calabrese KS, Caruso-Neves C, Neves JS, Benjamim CF. ATRvD1 Attenuates Renal Tubulointerstitial Injury Induced by Albumin Overload in Sepsis-Surviving Mice. Int J Mol Sci 2021; 22:ijms222111634. [PMID: 34769064 PMCID: PMC8583751 DOI: 10.3390/ijms222111634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 10/15/2021] [Accepted: 10/22/2021] [Indexed: 11/16/2022] Open
Abstract
Novel strategies for the prevention and treatment of sepsis-associated acute kidney injury and its long-term outcomes have been required and remain a challenge in critical care medicine. Therapeutic strategies using lipid mediators, such as aspirin-triggered resolvin D1 (ATRvD1), can contribute to the resolution of acute and chronic inflammation. In this study, we examined the potential effect of ATRvD1 on long-term kidney dysfunction after severe sepsis. Fifteen days after cecal ligation and puncture (CLP), sepsis-surviving BALB/c mice were subjected to a tubulointerstitial injury through intraperitoneal injections of bovine serum albumin (BSA) for 7 days, called the subclinical acute kidney injury (subAKI) animal model. ATRvD1 treatment was performed right before BSA injections. On day 22 after CLP, the urinary protein/creatinine ratio (UPC), histologic parameters, fibrosis, cellular infiltration, apoptosis, inflammatory markers levels, and mRNA expression were determined. ATRvD1 treatment mitigated tubulointerstitial injury by reducing proteinuria excretion, the UPC ratio, the glomerular cell number, and extracellular matrix deposition. Pro-fibrotic markers, such as transforming growth factor β (TGFβ), type 3 collagen, and metalloproteinase (MMP)-3 and -9 were reduced after ATRvD1 administration. Post-septic mice treated with ATRvD1 were protected from the recruitment of IBA1+ cells. The interleukin-1β (IL-1β) levels were increased in the subAKI animal model, being attenuated by ATRvD1. Tumor necrosis factor-α (TNF-α), IL-10, and IL-4 mRNA expression were increased in the kidney of BSA-challenged post-septic mice, and it was also reduced after ATRvD1. These results suggest that ATRvD1 protects the kidney against a second insult such as BSA-induced tubulointerstitial injury and fibrosis by suppressing inflammatory and pro-fibrotic mediators in renal dysfunction after sepsis.
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Affiliation(s)
- José Bruno N. F. Silva
- Institute of Microbiology Paulo de Góes (IMPG), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, Brazil; (J.B.N.F.S.); (R.F.G.)
| | - Thayanne B. B. Calcia
- Institute of Biophysics Carlos Chagas Filho (IBCCF), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, Brazil; (T.B.B.C.); (C.C.-N.)
| | - Cyntia P. Silva
- Institute of Biomedical Sciences (ICB), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, Brazil; (C.P.S.); (F.S.L.); (J.S.N.)
| | - Rafael F. Guilherme
- Institute of Microbiology Paulo de Góes (IMPG), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, Brazil; (J.B.N.F.S.); (R.F.G.)
| | - Fernando Almeida-Souza
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute (IOC), Fiocruz, Rio de Janeiro 21040-900, Brazil; (F.A.-S.); (K.S.C.)
- Postgraduate in Animal Science, State University of Maranhão, São Luís 65055-310, Brazil
| | - Felipe S. Lemos
- Institute of Biomedical Sciences (ICB), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, Brazil; (C.P.S.); (F.S.L.); (J.S.N.)
| | - Kátia S. Calabrese
- Laboratory of Immunomodulation and Protozoology, Oswaldo Cruz Institute (IOC), Fiocruz, Rio de Janeiro 21040-900, Brazil; (F.A.-S.); (K.S.C.)
| | - Celso Caruso-Neves
- Institute of Biophysics Carlos Chagas Filho (IBCCF), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, Brazil; (T.B.B.C.); (C.C.-N.)
| | - Josiane S. Neves
- Institute of Biomedical Sciences (ICB), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, Brazil; (C.P.S.); (F.S.L.); (J.S.N.)
| | - Claudia F. Benjamim
- Institute of Biophysics Carlos Chagas Filho (IBCCF), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro 21941-902, Brazil; (T.B.B.C.); (C.C.-N.)
- Correspondence: or ; Tel.: +55-21-3938-6709
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Caspase-1-Inhibitor AC-YVAD-CMK Inhibits Pyroptosis and Ameliorates Acute Kidney Injury in a Model of Sepsis. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6636621. [PMID: 34222479 PMCID: PMC8213477 DOI: 10.1155/2021/6636621] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 05/02/2021] [Accepted: 05/23/2021] [Indexed: 11/18/2022]
Abstract
Objective To observe the protective effect of AC-YVAD-CMK on sepsis-induced acute kidney injury in mice and to explore its possible mechanisms primarily. Methods Eighteen male C57BL/6 mice were randomly divided into sham-operated group (Control), cecal ligation and puncture group (CLP), and CLP model treated with AC-YVAD-CMK group (AC-YVAD-CMK) (n = 6 in each group). Mice were sacrificed at 24 h after operation, and blood and kidney tissue samples were collected for analyses. Histologic changes were determined microscopically following HE staining. The expression of Ly-6B and CD68 was investigated using immunohistochemistry. Serum concentrations of creatinine (sCR) and blood urea nitrogen (BUN) were measured. Serum levels of interleukin-1β (IL-1β), interleukin-18 (IL-18), TNF-α, and interleukin-6 (IL-6) were determined by ELISA. The expressions of Caspas-1, NLRP-1, IL-1β, and IL-18 in renal tissues were investigated using Western blot. Immunofluorescence staining was used to detect the expression of GSDMD protein in renal tissues. Results AC-YVAD-CMK treatment significantly alleviates sepsis-induced acute kidney injury, with decreased histological injury in renal tissues, suppresses the accumulation of neutrophils and macrophages in renal tissues, and decreased sCR and BUN level (P < 0.05). Attenuation of sepsis-induced acute kidney injury was due to the prohibited production of inflammatory cytokines and decrease expression of Caspas-1, NLRP-1, IL-1β, and IL-18 in renal tissues. In addition, AC-YVAD-CMK treatment significantly reduced the expression of GSDMD in renal tissues compared to those observed in controls (P < 0.05). Conclusions We demonstrated a marked renoprotective effect of caspase-1-inhibitor AC-YVAD-CMK in a rat model of sepsis by inhibition of pyroptosis.
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Masum MA, Ichii O, Elewa YHA, Kon Y. Podocyte Injury Through Interaction Between Tlr8 and Its Endogenous Ligand miR-21 in Obstructed and Its Collateral Kidney. Front Immunol 2021; 11:606488. [PMID: 33552064 PMCID: PMC7862702 DOI: 10.3389/fimmu.2020.606488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 12/07/2020] [Indexed: 11/13/2022] Open
Abstract
While chronic kidney disease is prevalent in adults, obstructive nephropathy (ON) has been reported in both young and old patients. In ON, tubulointerstitial lesions (TILs) have been widely investigated, but glomerular lesions (GLs) have been largely neglected. Here, we show a novel mechanism underlying GL development in ON in young and old mice. TILs develop earlier than GLs owing to infiltration of inflammatory cells in the tubulointerstitium, but GLs develop following the activation of Toll-like receptor 8 (Tlr8) even though the absence of inflammatory cells infiltrating the glomerulus. TLR8 and interleukin 1 beta (IL1β) proteins colocalize with reducing podocyte function markers (PFMs), indicating the activation of TLR8 signaling in injured podocytes. Furthermore, glomerular and serum levels of miR-21, an endogenous ligand for Tlr8, were higher in the ON mouse model than in the sham control. The glomerular expression of Tlr8 positively correlates with miR-21 and the downstream cytokines Il1b and Il6 and negatively correlated with PFMs (Nphs1 and Synpo). We also show the colocalization of TLR8 and IL1β proteins with reducing PFMs in both obstructed and collateral kidney of young and old mice. Furthermore, in vitro study results revealed higher expression of Tlr8 and its downstream cytokines in glomeruli from obstructed kidneys following treatment with miR-21 mimic than in the control. In conclusion, the overexpression of Tlr8 may serve as a plausible mechanism underlying GL development in ON through podocyte injury.
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Affiliation(s)
- Md. Abdul Masum
- Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- Department of Anatomy, Histology and Physiology, Faculty of Animal Science and Veterinary Medicine, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
| | - Osamu Ichii
- Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- Laboratory of Agrobiomedical Science, Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Yaser Hosny Ali Elewa
- Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
- Department of Histology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Yasuhiro Kon
- Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
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Somade OT, Ajayi BO, Olushola MO, Omoseebi EO. Methyl cellosolve-induced renal oxidative stress and time-dependent up-regulation of pro-inflammatory cytokines, apoptotic, and oncogenic markers in rats. Toxicol Rep 2020; 7:779-787. [PMID: 32642444 PMCID: PMC7332505 DOI: 10.1016/j.toxrep.2020.06.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 06/16/2020] [Accepted: 06/19/2020] [Indexed: 01/10/2023] Open
Abstract
MC significantly increased and decrease the kidney levels of MDA and NO respectively after 14 and 21 days. MC administration resulted in the disorganization of the renal redox system. MC significantly increased the kidney levels of TNF-α and IL-6 after 7, 14 and 21 days, and IL-1β after 14 and 21 days. MC significantly increased kidney p53, Bax, and caspase-3 after 14 and 21 days, and decreased Bcl-2 after 14 and 21 days. MC significantly increased the kidney levels of c-Myc and K-Ras after 7, 14 and 21 days.
Methyl cellosolve (MC) is used in production of textile, paints, stains, inks, surface coatings, and anti-icing additive in hydraulic fluids and jet fuel. Consequently, the present study investigated its effect on renal cells, in a time-course study in male Wistar rats. Animals were orally administered 50 mg/kg body weight of MC for a period of 7, 14, and 21 days. Following 7 days of administration of MC, there was a significant increase in the levels of K-Ras, c-Myc, TNF-α, IL-6 and NO, while GSH level and SOD activity were significantly reduced compared with control. At the end of 14 days exposure, RKW, GSH, NO, and Bcl-2 levels were significantly decreased, while levels of K-Ras, c-Myc, p53, Bax, caspase-3, TNF-α, IL-1β, IL-6, MDA and GPx activity were significantly increased compared with control. After 21 days of MC administration, RKW, GSH, NO, IL-10 and Bcl-2 levels were significantly decreased, while levels of K-Ras, c-Myc, p53, Bax, caspase-3, TNF-α, IL-1β, IL-6, MDA and GST activity were significantly increased compared with control. Exposures to MC in any way should be strictly avoided as it could trigger renal damage through the disorganization of the antioxidant system, up-regulation of inflammatory, apoptotic, and oncogenic markers in rats.
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Key Words
- Apoptosis
- Bax, Bcl-2 associated X
- Bcl-2, B-cell lymphoma 2
- CAT, catalase
- GPx, glutathione peroxidase
- GSH, reduced glutathione
- GST, glutathione S-transferase
- Histopathology
- IL-1β, interleukin-1 beta
- IL-6, interleukin-6
- Inflammation
- K-Ras, Kirsten rat sarcoma viral oncogene
- Kidney
- MDA, malondialdehyde
- Methyl cellosolve
- NO, nitric oxide
- Oncogenes
- Oxidative stress
- RKW, relative kidney weight
- SOD, superoxide dismutase
- TNF-α, tumor necrosis factor alpha
- c-Myc, myelocytomatosis
- p53, tumor suppressor protein
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Affiliation(s)
- Oluwatobi T Somade
- Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
| | - Babajide O Ajayi
- Department of Chemical Sciences, Faculty of Natural Sciences, Ajayi Crowther University, Oyo, Nigeria
| | - Mariana O Olushola
- Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
| | - Esther O Omoseebi
- Department of Biochemistry, College of Biosciences, Federal University of Agriculture, Abeokuta, Nigeria
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12
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IL-20 in Acute Kidney Injury: Role in Pathogenesis and Potential as a Therapeutic Target. Int J Mol Sci 2020; 21:ijms21031009. [PMID: 32028746 PMCID: PMC7037658 DOI: 10.3390/ijms21031009] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 02/06/2023] Open
Abstract
Acute kidney injury (AKI) causes over 1 million deaths worldwide every year. AKI is now recognized as a major risk factor in the development and progression of chronic kidney disease (CKD). Diabetes is the main cause of CKD as well. Renal fibrosis and inflammation are hallmarks in kidney diseases. Various cytokines contribute to the progression of renal diseases; thus, many drugs that specifically block cytokine function are designed for disease amelioration. Numerous studies showed IL-20 functions as a pro-inflammatory mediator to regulate cytokine expression in several inflammation-mediated diseases. In this review, we will outline the effects of pro-inflammatory cytokines in the pathogenesis of AKI and CKD. We also discuss the role of IL-20 in kidney diseases and provide a potential therapeutic approach of IL-20 blockade for treating renal diseases.
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Masum MA, Ichii O, Hosny Ali Elewa Y, Nakamura T, Otani Y, Hosotani M, Kon Y. Overexpression of toll-like receptor 9 correlates with podocyte injury in a murine model of autoimmune membranoproliferative glomerulonephritis. Autoimmunity 2018; 51:386-398. [PMID: 30592438 DOI: 10.1080/08916934.2018.1549234] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Toll-like receptors (Tlrs) are sensors of danger signals which promote the activation of immune cells and intrinsic renal cells. Podocytes, the intrinsic cells of glomerulus, are continuously exposed to various plasma solutes and danger signals due to their unique location in the glomerulus. Herein, we show that Tlr9 is overexpressed in podocytes and the mechanisms which cause its injury and development of membranoproliferative glomerulonephritis (MPGN) in model BXSB/MpJ-Yaa (Yaa) mice. Yaa mice developed typical lesions of MPGN and showed strong expression of Tlr9 mRNA throughout the glomerulus particularly toward the periphery of the glomerulus. However, BXSB/MpJ (BXSB) mice showed no lesion for MPGN but a very weak expression of Tlr9 mRNA. Relative mRNA expression of Tlr9 and its downstream cytokines, including interleukin 1 beta (Il1b), Il6, interferon gamma (Ifng) and tumour necrosis factor alpha (Tnfa) was markedly increased in glomeruli isolated from Yaa mice. Tlr9 protein expression was almost absent in BXSB mice but intense expression was found in Yaa mice. Podocyte protein expression was normal in BXSB mice but decreased in Yaa mice and colocalized with Tlr9 protein. Furthermore, electron microscopy examination revealed podocyte injury and electron-dense materials in thickened glomerular basement membrane of Yaa mice. Glomerular Tlr9 mRNA expression was significantly correlated with anti-dsDNA antibody, proteinuria, renal function indices (sBUN and sCr), glomerular histopathology indices, downstream factors of Tlr family (Ilb and Tnfa), podocyte injury parameters (p < .05 and p < .01). In conclusion, overexpression of TLR9 correlates with podocyte injury and development of MPGN.
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Affiliation(s)
- Md Abdul Masum
- a Laboratory of Anatomy, Faculty of Veterinary Medicine, Department of Basic Veterinary Sciences , Hokkaido University , Sapporo , Japan.,b Faculty of Animal Science and Veterinary Medicine, Department of Anatomy, Histology and Physiology , Sher-e-Bangla Agricultural University , Dhaka , Bangladesh
| | - Osamu Ichii
- a Laboratory of Anatomy, Faculty of Veterinary Medicine, Department of Basic Veterinary Sciences , Hokkaido University , Sapporo , Japan
| | - Yaser Hosny Ali Elewa
- a Laboratory of Anatomy, Faculty of Veterinary Medicine, Department of Basic Veterinary Sciences , Hokkaido University , Sapporo , Japan.,c Department of Histology, Faculty of Veterinary Medicine , Zagazig University , Zagazig , Egypt
| | - Teppei Nakamura
- a Laboratory of Anatomy, Faculty of Veterinary Medicine, Department of Basic Veterinary Sciences , Hokkaido University , Sapporo , Japan.,d Section of Biological Safety Research, Chitose Laboratory , Japan Food Research Laboratories , Chitose , Japan
| | - Yuki Otani
- a Laboratory of Anatomy, Faculty of Veterinary Medicine, Department of Basic Veterinary Sciences , Hokkaido University , Sapporo , Japan
| | - Marina Hosotani
- a Laboratory of Anatomy, Faculty of Veterinary Medicine, Department of Basic Veterinary Sciences , Hokkaido University , Sapporo , Japan
| | - Yasuhiro Kon
- a Laboratory of Anatomy, Faculty of Veterinary Medicine, Department of Basic Veterinary Sciences , Hokkaido University , Sapporo , Japan
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Exclusive expression of transmembrane TNF aggravates acute glomerulonephritis despite reduced leukocyte infiltration and inflammation. Kidney Int 2018; 95:75-93. [PMID: 30389199 DOI: 10.1016/j.kint.2018.08.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 07/29/2018] [Accepted: 08/02/2018] [Indexed: 02/03/2023]
Abstract
Tumor necrosis factor-α (TNF) is a cytokine mediating inflammatory kidney diseases such as immune complex glomerulonephritis. Its two receptors, TNFR1 and TNFR2, play distinct roles in this process, with TNFR2 strongly required for induction of disease. In contrast to soluble TNF (sTNF), transmembrane TNF robustly activates TNFR2. Thus, we examined the functional role of transmembrane TNF by inducing heterologous nephrotoxic serum nephritis in wild-type and transgenic TNFΔ1-9,K11E knock-in mice expressing transmembrane TNF but no sTNF (memTNF mice). Compared to wild-type, nephritis was exacerbated in memTNF mice on day 5, indicated by increased albuminuria, higher serum urea levels, and more pronounced glomerular deposits, together with higher numbers of dying and proliferating glomerular cells. This was associated with greater loss of glomerular endothelial cells, increased podocyte stress, and signs of augmented necroptosis in memTNF kidneys. Aggravation of nephritis was dependent on transmembrane TNF expression in parenchymal cells, but not leukocytes. Surprisingly, increased kidney injury was associated with reduced renal leukocyte infiltration in memTNF mice, which correlated with decreased renal mRNA expression of pro-inflammatory mediators. This effect was also present in isolated memTNF glomeruli stimulated with interleukin-1β in vitro. Thus, uncleaved transmembrane TNF is an important mediator of renal tissue damage characterized by increased renal cell death and loss of glomerular endothelial cells in murine glomerulonephritis. In contrast, sTNF predominantly mediates renal leukocyte recruitment and inflammation. These findings highlight the importance of transmembrane TNF in inflammatory kidney disease as a possible therapeutic target.
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Abstract
Inflammasomes influence a diverse range of kidney disease, including acute and chronic kidney diseases, and those mediated by innate and adaptive immunity. Both IL-18 and in particular IL-1β are validated therapeutic targets in several kidney diseases. In addition to leukocyte-derived inflammasomes, renal tissue cells express functional inflammasome components. Furthermore, a range of endogenous substances that directly activate inflammasomes also mediate kidney injury. Many of the functional studies have focussed on the NLRP3 inflammasome, and there is also evidence for the involvement of other inflammasomes in some conditions. While, at least in some disease, the mechanistic details of the involvement of the inflammasome remain to be elucidated, therapies focussed on inflammasomes and their products have potential in treating kidney disease in the future.
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Affiliation(s)
- Holly L Hutton
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, VIC, Australia
| | - Maliha A Alikhan
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, VIC, Australia
| | - A Richard Kitching
- Centre for Inflammatory Diseases, Monash University Department of Medicine, Monash Medical Centre, Clayton, VIC, Australia.
- Department of Nephrology, Monash Health, Clayton, VIC, Australia.
- Department of Paediatric Nephrology, Monash Health, Clayton, VIC, Australia.
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16
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Monocytes Promote Crescent Formation in Anti-Myeloperoxidase Antibody–Induced Glomerulonephritis. THE AMERICAN JOURNAL OF PATHOLOGY 2017; 187:1908-1915. [DOI: 10.1016/j.ajpath.2017.05.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 04/27/2017] [Accepted: 05/02/2017] [Indexed: 11/20/2022]
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17
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Abstract
Kidney injury implies danger signaling and a response by the immune system. The inflammasome is a central danger recognition platform that triggers local and systemic inflammation. In immune cells, inflammasome activation causes the release of mature IL-1β and of the alarmin IL-1α Dying cells release IL-1α also, independently of the inflammasome. Both IL-1α and IL-1β ligate the same IL-1 receptor (IL-1R) that is present on nearly all cells inside and outside the kidney, further amplifying cytokine and chemokine release. Thus, the inflammasome-IL-1α/IL-β-IL-1R system is a central element of kidney inflammation and the systemic consequences. Seminal discoveries of recent years have expanded this central paradigm of inflammation. This review gives an overview of arising concepts of inflammasome and IL-1α/β regulation in renal cells and in experimental kidney disease models. There is a pipeline of compounds that can interfere with the inflammasome-IL-1α/IL-β-IL-1R system, ranging from recently described small molecule inhibitors of NLRP3, a component of the inflammasome complex, to regulatory agency-approved IL-1-neutralizing biologic drugs. Based on strong theoretic and experimental rationale, the potential therapeutic benefits of using such compounds to block the inflammasome-IL-1α/IL-β-IL-1R system in kidney disease should be further explored.
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Affiliation(s)
- Hans-Joachim Anders
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Ludwig-Maximilians Universität, Munich, Germany
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18
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Kerroch M, Alfieri C, Dorison A, Boffa JJ, Chatziantoniou C, Dussaule JC. Protective effects of genetic inhibition of Discoidin Domain Receptor 1 in experimental renal disease. Sci Rep 2016; 6:21262. [PMID: 26880216 PMCID: PMC4754689 DOI: 10.1038/srep21262] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 01/20/2016] [Indexed: 11/09/2022] Open
Abstract
Chronic kidney disease is a progressive incurable pathology affecting millions of people. Intensive investigations aim to identify targets for therapy. We have previously demonstrated that abnormal expression of the Discoidin Domain Receptor 1 (DDR1) is a key factor of renal disease by promoting inflammation and fibrosis. The present study investigates whether blocking the expression of DDR1 after the initiation of renal disease can delay or arrest the progression of this pathology. Severe renal disease was induced by either injecting nephrotoxic serum (NTS) or performing unilateral ureteral obstruction in mice, and the expression of DDR1 was inhibited by administering antisense oligodeoxynucleotides either at 4 or 8 days after NTS (corresponding to early or more established phases of disease, respectively), or at day 2 after ligation. DDR1 antisense administration at day 4 stopped the increase of proteinuria and protected animals against the progression of glomeruloneprhitis, as evidenced by functional, structural and cellular indexes. Antisense administration at day 8 delayed progression -but to a smaller degree- of renal disease. Similar beneficial effects on renal structure and inflammation were observed with the antisense administration of DDR1 after ureteral ligation. Thus, targeting DDR1 can be a promising strategy in the treatment of chronic kidney disease.
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Affiliation(s)
- Monique Kerroch
- INSERM UMR S 1155, Hôpital Tenon, 75020 Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Paris, France
| | - Carlo Alfieri
- INSERM UMR S 1155, Hôpital Tenon, 75020 Paris, France.,Department of Medicine and Medical Specialties, Unit of Nephrology, Dialysis, and Renal Transplant, Fondazione Istituto di Ricerca e Cura a Carattere Scientifico Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Aude Dorison
- INSERM UMR S 1155, Hôpital Tenon, 75020 Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Paris, France
| | - Jean-Jacques Boffa
- INSERM UMR S 1155, Hôpital Tenon, 75020 Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Paris, France.,Service de Néphrologie et Dialyses, Hôpital Tenon, AP-HP, Paris, France
| | - Christos Chatziantoniou
- INSERM UMR S 1155, Hôpital Tenon, 75020 Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Paris, France
| | - Jean-Claude Dussaule
- INSERM UMR S 1155, Hôpital Tenon, 75020 Paris, France.,Sorbonne Universités, UPMC Univ Paris 06, Paris, France.,Department of Physiology, Saint-Antoine Hospital, AP-HP, Paris, France
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19
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Thanei S, Trendelenburg M. Anti-C1q Autoantibodies from Systemic Lupus Erythematosus Patients Induce a Proinflammatory Phenotype in Macrophages. THE JOURNAL OF IMMUNOLOGY 2016; 196:2063-74. [PMID: 26829984 DOI: 10.4049/jimmunol.1501659] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 12/21/2015] [Indexed: 12/25/2022]
Abstract
Anti-C1q autoantibodies (anti-C1q) are frequently found in patients with systemic lupus erythematosus (SLE) and correlate with the occurrence of proliferative lupus nephritis. A previous study of anti-C1q in experimental lupus nephritis demonstrated an important role for FcγRs in the pathogenesis of lupus nephritis, suggesting a direct effect on phagocytes. Therefore, we developed an in vitro model to study the effect of SLE patient-derived anti-C1q bound to immobilized C1q (imC1q) on human monocyte-derived macrophages (HMDMs) obtained from healthy donors and SLE patients. HMDMs were investigated by analyzing the cell morphology, LPS-induced cytokine profile, surface marker expression, and phagocytosis rate of apoptotic Jurkat cells. Morphologically, bound anti-C1q induced cell aggregations of HMDMs compared with imC1q or IgG alone. In addition, anti-C1q reversed the effect of imC1q alone, shifting the LPS-induced cytokine release toward a proinflammatory response. FcγR-blocking experiments revealed that the secretion of proinflammatory cytokines was mediated via FcγRII. The anti-C1q-induced inflammatory cytokine profile was accompanied by a downregulation of CD163 and an upregulation of LPS-induced CD80, CD274, and MHC class II. Finally, HMDMs primed on bound anti-C1q versus imC1q alone displayed a significantly lower phagocytosis rate of early and late apoptotic cells accompanied by a reduced Mer tyrosine kinase expression. Interestingly, anti-C1q-dependent secretion of proinflammatory cytokines was similar in SLE patient-derived cells, with the exception that IL-10 was slightly increased. In conclusion, anti-C1q induced a proinflammatory phenotype in HMDMs reversing the effects of imC1q alone. This effect might exacerbate underlying pathogenic mechanisms in lupus nephritis.
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Affiliation(s)
- Sophia Thanei
- Laboratory of Clinical Immunology, University Hospital Basel, CH-4031 Basel, Switzerland; and
| | - Marten Trendelenburg
- Laboratory of Clinical Immunology, University Hospital Basel, CH-4031 Basel, Switzerland; and Division of Internal Medicine, University Hospital Basel, CH-4031 Basel, Switzerland
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20
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Proinflammatory Cytokines and Potassium Channels in the Kidney. Mediators Inflamm 2015; 2015:362768. [PMID: 26508816 PMCID: PMC4609835 DOI: 10.1155/2015/362768] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Accepted: 09/09/2015] [Indexed: 01/08/2023] Open
Abstract
Proinflammatory cytokines affect several cell functions via receptor-mediated processes. In the kidney, functions of transporters and ion channels along the nephron are also affected by some cytokines. Among these, alteration of activity of potassium ion (K(+)) channels induces changes in transepithelial transport of solutes and water in the kidney, since K(+) channels in tubule cells are indispensable for formation of membrane potential which serves as a driving force for the transepithelial transport. Altered K(+) channel activity may be involved in renal cell dysfunction during inflammation. Although little information was available regarding the effects of proinflammatory cytokines on renal K(+) channels, reports have emerged during the last decade. In human proximal tubule cells, interferon-γ showed a time-dependent biphasic effect on a 40 pS K(+) channel, that is, delayed suppression and acute stimulation, and interleukin-1β acutely suppressed the channel activity. Transforming growth factor-β1 activated KCa3.1 K(+) channel in immortalized human proximal tubule cells, which would be involved in the pathogenesis of renal fibrosis. This review discusses the effects of proinflammatory cytokines on renal K(+) channels and the causal relationship between the cytokine-induced changes in K(+) channel activity and renal dysfunction.
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Overexpression of Toll-like receptor 8 correlates with the progression of podocyte injury in murine autoimmune glomerulonephritis. Sci Rep 2014; 4:7290. [PMID: 25468389 PMCID: PMC4252901 DOI: 10.1038/srep07290] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 11/12/2014] [Indexed: 12/23/2022] Open
Abstract
Members of the Toll-like receptor (TLR) family serve as pathogen sensors and participate in local autoimmune responses. This study found a correlation between glomerular injury and TLR expression by analysing BXSB/MpJ-Yaa (BXSB-Yaa) lupus model mice. In isolated glomeruli, the mRNA expression of several TLRs was higher in BXSB-Yaa mice than in healthy control BXSB mice. In particular, the expression of Tlr8 and its downstream cytokines was markedly increased. In mouse kidneys, TLR8 protein and mRNA localized to podocytes, and TLR8 protein expression in the glomerulus was higher in BXSB-Yaa mice than in BXSB mice. In BXSB-Yaa mice, the glomerular levels of Tlr8 mRNA negatively correlated with the glomerular levels of podocyte functional markers (Nphs1, Nphs2, and Synpo) and positively correlated with urinary albumin levels. Furthermore, the glomerular and serum levels of miR-21, a putative microRNA ligand of TLR8, were higher in BXSB-Yaa mice than in BXSB mice. The urinary levels of Tlr8 mRNA were also higher in BXSB-Yaa mice than in BXSB mice. In conclusion, the overexpression of TLR8 correlates with the progression of podocyte injury in glomerulonephritis. Thus, altered levels of urinary Tlr8 mRNA might reflect podocyte injury.
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22
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Hingorani S, Finn LS, Pao E, Lawler R, Schoch G, McDonald GB, Najafian B, Sandmaier B, Gooley T. Urinary elafin and kidney injury in hematopoietic cell transplant recipients. Clin J Am Soc Nephrol 2014; 10:12-20. [PMID: 25388519 DOI: 10.2215/cjn.01840214] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND OBJECTIVES Graft-versus-host disease (GVHD) is associated with kidney injury after hematopoietic cell transplantation (HCT). Because plasma elafin levels correlate with skin GVHD, this study examined urinary elafin as a potential marker of renal inflammation and injury. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS Urine was collected prospectively on 205 patients undergoing their first HCT from 2003 to 2010. Collections were done at baseline, weekly through day 100, and monthly through year 1 to measure elafin and urine albumin-to-creatinine ratio (ACR). Associations between urinary elafin levels and microalbuminuria, macroalbuminuria, AKI and CKD, and mortality were examined using Cox proportional hazards or linear regression models. Available kidney biopsy specimens were processed for immunohistochemistry. RESULTS Mean urinary elafin levels to day 100 were higher in patients with micro- or macroalbuminuria (adjusted mean difference, 529 pg/ml; P=0.03) at day 100 than in those with a normal ACR (adjusted mean difference, 1295 pg/ml; P<0.001). Mean urinary elafin levels were higher in patients with AKI compared with patients without AKI (adjusted mean difference, 558 pg/ml; P<0.01). The average urinary elafin levels within the first 100 days after HCT were higher in patients who developed CKD at 1 year than in patients without CKD (adjusted mean difference, 894 pg/ml; P=0.002). Among allogeneic recipients, a higher proportion of patients with micro- or macroalbuminuria at day 100 also had grade II-IV acute GVHD (80% and 86%, respectively) compared with patients with a normal ACR (58%; global P<0.01). Each increase in elafin of 500 pg/ml resulted in a 10% increase in risk of persistent macroalbuminuria (hazard ratio, 1.10; 95% confidence interval [95% CI], 1.06 to 1.13; P<0.001) and a 7% increase in the risk of overall mortality (95% CI, 1.02 to 1.13, P<0.01). Renal biopsy specimens from a separate cohort of HCT survivors demonstrated elafin staining in distal and collecting duct tubules. CONCLUSION Higher urinary elafin levels are associated with an increased risk of micro- and macroalbuminuria, AKI and CKD, and death after HCT.
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Affiliation(s)
- Sangeeta Hingorani
- Departments of Pediatrics, Gastroenterology, and Pathology, University of Washington, Seattle, Washington; Seattle Children's Hospital, Seattle, Washington; and Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Laura S Finn
- Departments of Pediatrics, Gastroenterology, and Pathology, University of Washington, Seattle, Washington; Seattle Children's Hospital, Seattle, Washington; and
| | - Emily Pao
- Seattle Children's Hospital, Seattle, Washington; and
| | - Rick Lawler
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Gary Schoch
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - George B McDonald
- Departments of Pediatrics, Gastroenterology, and Pathology, University of Washington, Seattle, Washington; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Behzad Najafian
- Departments of Pediatrics, Gastroenterology, and Pathology, University of Washington, Seattle, Washington
| | - Brenda Sandmaier
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Ted Gooley
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
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23
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Andersen K, Eltrich N, Lichtnekert J, Anders HJ, Vielhauer V. The NLRP3/ASC inflammasome promotes T-cell-dependent immune complex glomerulonephritis by canonical and noncanonical mechanisms. Kidney Int 2014; 86:965-78. [DOI: 10.1038/ki.2014.161] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 02/24/2014] [Accepted: 03/24/2014] [Indexed: 01/05/2023]
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Boini KM, Xia M, Abais JM, Li G, Pitzer AL, Gehr TWB, Zhang Y, Li PL. Activation of inflammasomes in podocyte injury of mice on the high fat diet: Effects of ASC gene deletion and silencing. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1843:836-45. [PMID: 24508291 DOI: 10.1016/j.bbamcr.2014.01.033] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 01/08/2014] [Accepted: 01/30/2014] [Indexed: 12/20/2022]
Abstract
Inflammasome, an intracellular inflammatory machinery, has been reported to be involved in a variety of chronic degenerative diseases such as atherosclerosis, autoinflammatory diseases and Alzheimer's disease. The present study hypothesized that the formation and activation of inflammasomes associated with apoptosis associated speck-like protein (ASC) are an important initiating mechanism resulting in obesity-associated podocyte injury and consequent glomerular sclerosis. To test this hypothesis, Asc gene knockout (Asc(-/-)), wild type (Asc(+/+)) and intrarenal Asc shRNA-transfected wild type (Asc shRNA) mice were fed a high fat diet (HFD) or normal diet (ND) for 12 weeks to produce obesity and associated glomerular injury. Western blot and RT-PCR analyses demonstrated that renal tissue Asc expression was lacking in Asc(-/-) mice or substantially reduced in Asc shRNA transfected mice compared to Asc(+/+) mice. Confocal microscopic and co-immunoprecipitation analysis showed that the HFD enhanced the formation of inflammasome associated with Asc in podocytes as shown by colocalization of Asc with Nod-like receptor protein 3 (Nalp3). This inflammasome complex aggregation was not observed in Asc(-/-) and local Asc shRNA-transfected mice. The caspase-1 activity, IL-1β production and glomerular damage index (GDI) were also significantly attenuated in Asc(-/-) and Asc shRNA-transfected mice fed the HFD. This decreased GDI in Asc(-/-) and Asc shRNA transfected mice on the HFD was accompanied by attenuated proteinuria, albuminuria, foot process effacement of podocytes and loss of podocyte slit diaphragm molecules. In conclusion, activation and formation of inflammasomes in podocytes are importantly implicated in the development of obesity-associated glomerular injury.
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Affiliation(s)
- Krishna M Boini
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, School of Medicine, Richmond, VA 23298, USA.
| | - Min Xia
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, School of Medicine, Richmond, VA 23298, USA
| | - Justin M Abais
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, School of Medicine, Richmond, VA 23298, USA
| | - Guangbi Li
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, School of Medicine, Richmond, VA 23298, USA
| | - Ashley L Pitzer
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, School of Medicine, Richmond, VA 23298, USA
| | - Todd W B Gehr
- Department of Internal Medicine, Virginia Commonwealth University, School of Medicine, Richmond, VA 23298, USA
| | - Yang Zhang
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, School of Medicine, Richmond, VA 23298, USA
| | - Pin-Lan Li
- Department of Pharmacology and Toxicology, Virginia Commonwealth University, School of Medicine, Richmond, VA 23298, USA.
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25
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Liang Y, Ma S, Zhang Y, Wang Y, Cheng Q, Wu Y, Jin Y, Zheng D, Wu D, Liu H. IL-1β and TLR4 signaling are involved in the aggravated murine acute graft-versus-host disease caused by delayed bortezomib administration. THE JOURNAL OF IMMUNOLOGY 2013; 192:1277-85. [PMID: 24363427 DOI: 10.4049/jimmunol.1203428] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
It was shown that the proteasome inhibitor, bortezomib, administered immediately following allogeneic bone marrow transplantation resulted in marked inhibition of acute graft-versus-host disease (aGVHD), with retention of graft-versus-tumor effects. However, continuous bortezomib administration resulted in significant acceleration of graft-versus-host disease-dependent morbidity. We carried out studies to dissect the mechanisms of aggravated aGVHD caused by delayed bortezomib administration. First, we demonstrated that IL-1β was critically involved, and the subsequent aGVHD could be alleviated by IL-1β blockade. Bortezomib treatment after dendritic cell (DC) activation resulted in drastically elevated IL-1β production, whereas bortezomib treatment before DC activation inhibited IL-1β production, suggesting that the timing of bortezomib administration significantly affected IL-1β production by DCs. We further demonstrated that delayed administration of bortezomib accelerated aGVHD through TLR4 signaling. Because the LPS levels were much lower with reduced-intensity conditioning compared with high-dose irradiation, the accelerated graft-versus-host disease-dependent morbidity with delayed bortezomib administration could be rescued by reduced-intensity conditioning. Our studies suggested that TLR4 pathway activation and delayed bortezomib administration amplified the production of IL-1β and other inflammatory cytokines, which resulted in accelerated aGVHD-dependent morbidity. These results indicated that decreased toxicity of continuous bortezomib administration could be achieved by reduced-intensity conditioning or by inhibiting IL-1β.
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Affiliation(s)
- Yong Liang
- Laboratory of Cellular and Molecular Tumor Immunology, Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, People's Republic of China
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Lorenz G, Darisipudi MN, Anders HJ. Canonical and non-canonical effects of the NLRP3 inflammasome in kidney inflammation and fibrosis. Nephrol Dial Transplant 2013; 29:41-8. [PMID: 24026244 DOI: 10.1093/ndt/gft332] [Citation(s) in RCA: 165] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
NLRP-3 inflammasome is one of several intracellular danger recognition platforms that integrates infectious or non-infectious types of danger into the expression of pro-inflammatory cytokines to set-up inflammation for danger control. NLRP3 activation induces three types of caspase-1-mediated responses: secretion of IL-1beta, secretion of IL-18 and a programmed form of cell death, referred to as pyroptosis. Similar to the well-documented impact of Toll-like receptor-driven danger signalling in kidney disease, evolving data now suggest a similar involvement of the NLRP3 inflammasome in renal inflammation. Here, we discuss the accumulating data on NLRP3 in the kidney: its IL-1beta and IL-18-dependent 'canonical' effects and the current evidence for its 'non-canonical' effects, e.g. in tumor growth factor (TGF)-beta signalling, epithelial-mesenchymal transition and fibrosis. Research in this area will certainly uncover yet unknown aspects of danger signalling in the kidney and how it drives renal inflammation and immunopathology.
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Affiliation(s)
- Georg Lorenz
- Renal Division, Medizinische Klinik und Poliklinik IV, Klinikum der Ludwig Maximilians Universität, München-Innenstadt, Munich, Germany
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Nakamura K, Komagiri Y, Kubokawa M. Interleukin-1β suppresses activity of an inwardly rectifying K+ channel in human renal proximal tubule cells. J Physiol Sci 2013; 63:377-87. [PMID: 23797607 PMCID: PMC10717820 DOI: 10.1007/s12576-013-0275-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Accepted: 06/10/2013] [Indexed: 12/12/2022]
Abstract
We investigated the effect of interleukin-1β (IL-1β) on activity of an inwardly rectifying K+ channel in cultured human proximal tubule cells (RPTECs), using the patch-clamp technique and Fura-2 Ca2+ imaging. IL-1β (15 pg/ml) acutely reduced K+ channel activity in cell-attached patches. This effect was blocked by the IL-1 receptor antagonist (20 ng/ml), an inhibitor of phospholipase C, neomycin (300 μM), and an inhibitor of protein kinase C (PKC), GF109203X (500 nM). The Fura-2 Ca2+ imaging revealed that IL-1β increased intracellular Ca2+ concentration even after removal of extracellular Ca2+, which was blocked by an inhibitor of inositol 1,4,5-trisphosphate receptors, 2-aminoethoxydiphenyl borate (2-APB, 1 μM). Moreover, IL-1β suppressed channel activity in the presence of 2-APB without extracellular Ca2+. These results suggest that IL-1β suppresses K+ channel activity in RPTECs through binding to its specific receptor and activation of the PKC pathway even though intracellular Ca2+ does not increase.
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Affiliation(s)
- Kazuyoshi Nakamura
- Department of Physiology, Iwate Medical University School of Medicine, 2-1-1 Nishitokuta, Yahaba, 028-3694 Japan
| | - You Komagiri
- Department of Physiology, Iwate Medical University School of Medicine, 2-1-1 Nishitokuta, Yahaba, 028-3694 Japan
| | - Manabu Kubokawa
- Department of Physiology, Iwate Medical University School of Medicine, 2-1-1 Nishitokuta, Yahaba, 028-3694 Japan
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28
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Li Y, Raman I, Du Y, Yan M, Min S, Yang J, Fang X, Li W, Lu J, Zhou XJ, Mohan C, Li QZ. Kallikrein transduced mesenchymal stem cells protect against anti-GBM disease and lupus nephritis by ameliorating inflammation and oxidative stress. PLoS One 2013; 8:e67790. [PMID: 23935844 PMCID: PMC3720854 DOI: 10.1371/journal.pone.0067790] [Citation(s) in RCA: 22] [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: 02/13/2013] [Accepted: 05/26/2013] [Indexed: 12/20/2022] Open
Abstract
Previously we have shown that kallikreins (klks) play a renoprotective role in nephrotoxic serum induced nephritis. In this study, we have used mesenchymal stem cells (MSCs) as vehicles to deliver klks into the injured kidneys and have measured their therapeutic effect on experimental antibody induced nephritis and lupus nephritis. Human KLK-1 (hKLK1) gene was transduced into murine MSCs using a retroviral vector to generate a stable cell line, hKLK1-MSC, expressing high levels of hKLK1. 129/svj mice subjected to anti-GBM induced nephritis were transplanted with 106 hKLK1-MSCs and hKLK1 expression was confirmed in the kidneys. Compared with vector-MSCs injected mice, the hKLK1-MSCs treated mice showed significantly reduced proteinuria, blood urea nitrogen (BUN) and ameliorated renal pathology. Using the same strategy, we treated lupus-prone B6.Sle1.Sle3 bicongenic mice with hKLK1-MSCs and demonstrated that hKLK1-MSCs delivery also attenuated lupus nephritis. Mechanistically, hKLK1-MSCs reduced macrophage and T-lymphocyte infiltration into the kidney by suppressing the expression of inflammation cytokines. Moreover, hKLK1 transduced MSCs were more resistant to oxidative stress-induced apoptosis. These findings advance genetically modified MSCs as potential gene delivery tools for targeting therapeutic agents to the kidneys in order to modulate inflammation and oxidative stress in lupus nephritis.
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Affiliation(s)
- Yajuan Li
- Department of Immunology and Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Laboratory of Disease Genomics and Individualized Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Indu Raman
- Department of Immunology and Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Yong Du
- Department of Immunology and Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Mei Yan
- Department of Immunology and Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Soyoun Min
- Department of Immunology and Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Jichen Yang
- Quantitative Biomedical Research Center, The University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Xiangdong Fang
- Laboratory of Disease Genomics and Individualized Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Wei Li
- Key Laboratory of Medical Genetics, Wenzhou Medical College School of Laboratory Medicine & Life Science, Wenzhou, China
| | - Jianxin Lu
- Key Laboratory of Medical Genetics, Wenzhou Medical College School of Laboratory Medicine & Life Science, Wenzhou, China
| | - Xin J. Zhou
- Renal Path Diagnostics, Pathologist BioMedical Laboratories, Lewisville, Texas, United States of America
| | - Chandra Mohan
- Department of Immunology and Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- BME Departments, University of Houston, Houston, Texas, United States of America
- * E-mail: (CM); (QL)
| | - Quan-Zhen Li
- Department of Immunology and Internal Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Key Laboratory of Medical Genetics, Wenzhou Medical College School of Laboratory Medicine & Life Science, Wenzhou, China
- * E-mail: (CM); (QL)
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Taubitz A, Schwarz M, Eltrich N, Lindenmeyer MT, Vielhauer V. Distinct contributions of TNF receptor 1 and 2 to TNF-induced glomerular inflammation in mice. PLoS One 2013; 8:e68167. [PMID: 23869211 PMCID: PMC3711912 DOI: 10.1371/journal.pone.0068167] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Accepted: 05/30/2013] [Indexed: 12/29/2022] Open
Abstract
TNF is an important mediator of glomerulonephritis. The two TNF-receptors TNFR1 and TNFR2 contribute differently to glomerular inflammation in vivo, but specific mechanisms of TNFR-mediated inflammatory responses in glomeruli are unknown. We investigated their expression and function in murine kidneys, isolated glomeruli ex vivo, and glomerular cells in vitro. In normal kidney TNFR1 and TNFR2 were preferentially expressed in glomeruli. Expression of both TNFRs and TNF-induced upregulation of TNFR2 mRNA was confirmed in murine glomerular endothelial and mesangial cell lines. In vivo, TNF exposure rapidly induced glomerular accumulation of leukocytes. To examine TNFR-specific inflammatory responses in intrinsic glomerular cells but not infiltrating leukocytes we performed microarray gene expression profiling on intact glomeruli isolated from wildtype and Tnfr-deficient mice following exposure to soluble TNF ex vivo. Most TNF-induced effects were exclusively mediated by TNFR1, including induced glomerular expression of adhesion molecules, chemokines, complement factors and pro-apoptotic molecules. However, TNFR2 contributed to TNFR1-dependent mRNA expression of inflammatory mediators in glomeruli when exposed to low TNF concentrations. Chemokine secretion was absent in TNF-stimulated Tnfr1-deficient glomeruli, but also significantly decreased in glomeruli lacking TNFR2. In vivo, TNF-induced glomerular leukocyte infiltration was abrogated in Tnfr1-deficient mice, whereas Tnfr2-deficiency decreased mononuclear phagocytes infiltrates, but not neutrophils. These data demonstrate that activation of intrinsic glomerular cells by soluble TNF requires TNFR1, whereas TNFR2 is not essential, but augments TNFR1-dependent effects. Previously described TNFR2-dependent glomerular inflammation may therefore require TNFR2 activation by membrane-bound, but not soluble TNF.
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MESH Headings
- Animals
- Cell Line
- Gene Deletion
- Gene Expression Profiling
- Kidney/metabolism
- Kidney/pathology
- Leukocytes/metabolism
- Leukocytes/pathology
- Leukocytes/physiology
- Male
- Mice
- Mice, Inbred C57BL
- Oligonucleotide Array Sequence Analysis
- Real-Time Polymerase Chain Reaction
- Receptors, Tumor Necrosis Factor, Type I/genetics
- Receptors, Tumor Necrosis Factor, Type I/metabolism
- Receptors, Tumor Necrosis Factor, Type I/physiology
- Receptors, Tumor Necrosis Factor, Type II/genetics
- Receptors, Tumor Necrosis Factor, Type II/metabolism
- Receptors, Tumor Necrosis Factor, Type II/physiology
- Transforming Growth Factors/pharmacology
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Affiliation(s)
- Anela Taubitz
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Martin Schwarz
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Nuru Eltrich
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ludwig-Maximilians-University Munich, Munich, Germany
| | | | - Volker Vielhauer
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Ludwig-Maximilians-University Munich, Munich, Germany
- * E-mail:
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30
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Schwarz M, Taubitz A, Eltrich N, Mulay SR, Allam R, Vielhauer V. Analysis of TNF-mediated recruitment and activation of glomerular dendritic cells in mouse kidneys by compartment-specific flow cytometry. Kidney Int 2013; 84:116-29. [DOI: 10.1038/ki.2013.46] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Revised: 12/15/2012] [Accepted: 12/21/2012] [Indexed: 12/18/2022]
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31
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Zwiech R. Predictive value of conjointly examined IL-1ra, TNF-R I, TNF-R II, and RANTES in patients with primary glomerulonephritis. J Korean Med Sci 2013; 28:261-7. [PMID: 23400706 PMCID: PMC3565138 DOI: 10.3346/jkms.2013.28.2.261] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Accepted: 12/07/2012] [Indexed: 11/20/2022] Open
Abstract
Interleukin-1 receptor antagonist (IL-1ra), tumor necrosis factor soluble receptors (sTNF-R) type I and II, and regulated upon activation, normal T-cell expressed and secreted (RANTES) play an important role in the modulation of primary glomerulonephritis (GN) course. The aim of the study was to assess whether pre-treatment measurements of IL-1ra, sTNF-R, and RANTES assessed conjointly may be useful as predicting factors in patients with GN. In 84 patients (45 males and 39 female) serum concentration (pg/mL) and urinary excretion (pg/mgCr) of cytokines were measured. After 12 months of therapy with steroids and cyclophosphamide the patients were divided into two subgroups: Responders (R) and Non-Responders (NR) according to the treatment results. The urinary IL-1ra, TNF-RI and RII were significantly higher in R than NR (1,732 vs 646 with P < 0.001, 13.1 vs 6.3 with P = 0.005, and 33.6 vs 14.4 with P = 0.012). The urinary RANTES excretion was increased in NR (79.6 vs 28.5; P < 0.001). The multivariable analysis showed that if conjointly assessed, only urinary IL-1ra, TNF-R I and R II, RANTES with 85% probability pointed the feature remission (R). In conclusion, the urinary excretion of IL-1ra, TNF-R I and R II, and RANTES examined conjointly are effective in predicting favorable response to immunosuppressive treatment in patients with GN.
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MESH Headings
- Adult
- Cyclophosphamide/therapeutic use
- Female
- Glomerulonephritis/drug therapy
- Glomerulonephritis/metabolism
- Glomerulonephritis/pathology
- Humans
- Immunosuppressive Agents/therapeutic use
- Interleukin 1 Receptor Antagonist Protein/analysis
- Interleukin 1 Receptor Antagonist Protein/blood
- Interleukin 1 Receptor Antagonist Protein/urine
- Lymphocyte Activation
- Male
- Middle Aged
- Multivariate Analysis
- Predictive Value of Tests
- Receptors, Tumor Necrosis Factor, Type I/analysis
- Receptors, Tumor Necrosis Factor, Type I/blood
- Receptors, Tumor Necrosis Factor, Type I/urine
- Receptors, Tumor Necrosis Factor, Type II/analysis
- Receptors, Tumor Necrosis Factor, Type II/blood
- Receptors, Tumor Necrosis Factor, Type II/urine
- Steroids/therapeutic use
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
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Affiliation(s)
- Rafał Zwiech
- Department of Kidney Transplantation, Medical University of Łódź, Łódź, Poland.
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Bethunaickan R, Sahu R, Liu Z, Tang YT, Huang W, Edegbe O, Tao H, Ramanujam M, Madaio MP, Davidson A. Anti-tumor necrosis factor α treatment of interferon-α-induced murine lupus nephritis reduces the renal macrophage response but does not alter glomerular immune complex formation. ACTA ACUST UNITED AC 2013; 64:3399-408. [PMID: 22674120 DOI: 10.1002/art.34553] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVE To analyze the mechanism for the therapeutic effects of tumor necrosis factor α (TNFα) inhibition in a murine model of systemic lupus erythematosus. METHODS We used the (NZB × NZW)F(1) (NZB/NZW) mouse model of interferon-α-induced lupus nephritis and treated mice with TNF receptor type II (TNFRII) Ig after TNFα expression was detected in the kidneys. Autoantibodies were measured by enzyme-linked immunosorbent assay (ELISA), and autoantibody- forming cells were determined using an enzyme-linked immunospot assay. Activation of splenocytes was analyzed by flow cytometry. Kidneys were harvested and analyzed using flow cytometry, immunohistochemistry, ELISA, Western blotting, and real-time polymerase chain reaction. RESULTS TNFRII Ig treatment stabilized nephritis and markedly prolonged survival. Autoantibody production and systemic immune activation were not inhibited, but the renal response to glomerular immune complex deposition was attenuated. This was associated with decreases in renal production of chemokines, renal endothelial cell activation, interstitial F4/80(high) macrophage accumulation, tubular damage, and oxidative stress. In contrast, perivascular lymphoid aggregates containing B cells, T cells, and dendritic cells accumulated unabated. CONCLUSION Our data suggest that TNFα is a critical cytokine that amplifies the response of the nephron to immune complex deposition, but that it has less influence on the response of the systemic vasculature to inflammation.
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Abstract
Neutrophils are pivotal to host defence during infectious diseases. However, activated neutrophils may also cause undesired tissue damage. Ample examples include small-vessel inflammatory diseases (vasculitis) that are associated with anti-neutrophil cytoplasmic autoantibodies (ANCA) residing in the patients' plasma. In addition to being an important diagnostic tool, convincing evidence shows that ANCA are pathogenic. ANCA-neutrophil interactions induce important cellular responses that result in highly inflammatory necrotizing vascular damage. The interaction begins with ANCA binding to their target antigens on primed neutrophils, proceeds by recruiting transmembrane molecules to initiate intracellular signal transduction and culminates in activation of effector functions that ultimately mediate the tissue damage.
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Affiliation(s)
- R Kettritz
- Nephrologie und Internistische Intensivmedizin Charité Virchow Klinikum and Experimental and Clinical Research Center, a joint co-operation between the Charité Medical Faculty and the Max-Delbrück Center for Molecular Medicine, Berlin-Buch, Berlin, Germany.
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Zhou L, Yao X, Chen Y. Dexamethasone pretreatment attenuates lung and kidney injury in cholestatic rats induced by hepatic ischemia/reperfusion. Inflammation 2012; 35:289-96. [PMID: 21468628 DOI: 10.1007/s10753-011-9318-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Hepatic ischemia followed by reperfusion (IR) results in mild to severe organ injury, in which tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) seem to be involved. Thus, we aim to assess the influence of hepatic ischemia/reperfusion injury on remote organs in addition to cholestasis and consider the possible efficacy of steroid pretreatment in reducing the injury. A common bile duct ligation model was done on 24 male Sprague-Dawley rats. After 7 days, the rats were divided randomly into control group, IR group, and dexamethasone (DEX) group. The IR group showed significant increases in serum alanine aminotransferase, aspartate aminotransferase, and creatinine levels compared with the control and DEX groups. By ELISA techniques, higher levels of TNF-α and IL-1β in lung and kidney tissues were measured in the IR group than in the control and DEX groups, these were verified by immunohistochemistry. The lung histology of the IR group rats showed neutrophil infiltration, interstitial edema, and alveolar wall thickening. Kidney histology of the IR group rats showed vacuolization of the proximal tubular epithelial cells and tubular dilatation with granular eosinophilic casts. Better morphological aspects were observed in the DEX-pretreated animals. Minimal lesions were observed in the control. The results suggest that hepatic ischemia/reperfusion injury in cholestatic rats induced lung and kidney injuries. Pretreatment with dexamethasone reduced the IR-induced injury in addition to cholestasis.
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Affiliation(s)
- Liangyi Zhou
- Union Hospital, Fujian Medical University, Fuzhou, Fujian, China
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Kerroch M, Guerrot D, Vandermeersch S, Placier S, Mesnard L, Jouanneau C, Rondeau E, Ronco P, Boffa J, Chatziantoniou C, Dussaule J. Genetic inhibition of discoidin domain receptor 1 protects mice against crescentic glomerulonephritis. FASEB J 2012; 26:4079-91. [DOI: 10.1096/fj.11-194902] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Monique Kerroch
- Institut National de la Santé et de la Recherche Médicale (INSERM)Unité Mixte de Recherche (UMR) S 702, Hôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Université Pierre et Marie Curie (UPMC), Paris 6 UniversityParisFrance
| | - Dominique Guerrot
- Institut National de la Santé et de la Recherche Médicale (INSERM)Unité Mixte de Recherche (UMR) S 702, Hôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Université Pierre et Marie Curie (UPMC), Paris 6 UniversityParisFrance
| | - Sophie Vandermeersch
- Institut National de la Santé et de la Recherche Médicale (INSERM)Unité Mixte de Recherche (UMR) S 702, Hôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Université Pierre et Marie Curie (UPMC), Paris 6 UniversityParisFrance
| | - Sandrine Placier
- Institut National de la Santé et de la Recherche Médicale (INSERM)Unité Mixte de Recherche (UMR) S 702, Hôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Université Pierre et Marie Curie (UPMC), Paris 6 UniversityParisFrance
| | - Laurent Mesnard
- Institut National de la Santé et de la Recherche Médicale (INSERM)Unité Mixte de Recherche (UMR) S 702, Hôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Urgences Néphrologiques et Transplantation RénaleHôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Université Pierre et Marie Curie (UPMC), Paris 6 UniversityParisFrance
| | - Chantal Jouanneau
- Institut National de la Santé et de la Recherche Médicale (INSERM)Unité Mixte de Recherche (UMR) S 702, Hôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Université Pierre et Marie Curie (UPMC), Paris 6 UniversityParisFrance
| | - Eric Rondeau
- Institut National de la Santé et de la Recherche Médicale (INSERM)Unité Mixte de Recherche (UMR) S 702, Hôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Urgences Néphrologiques et Transplantation RénaleHôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Université Pierre et Marie Curie (UPMC), Paris 6 UniversityParisFrance
| | - Pierre Ronco
- Institut National de la Santé et de la Recherche Médicale (INSERM)Unité Mixte de Recherche (UMR) S 702, Hôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Service de Néphrologie et DialysesHôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Université Pierre et Marie Curie (UPMC), Paris 6 UniversityParisFrance
| | - Jean‐Jacques Boffa
- Institut National de la Santé et de la Recherche Médicale (INSERM)Unité Mixte de Recherche (UMR) S 702, Hôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Service de Néphrologie et DialysesHôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Université Pierre et Marie Curie (UPMC), Paris 6 UniversityParisFrance
| | - Christos Chatziantoniou
- Institut National de la Santé et de la Recherche Médicale (INSERM)Unité Mixte de Recherche (UMR) S 702, Hôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Université Pierre et Marie Curie (UPMC), Paris 6 UniversityParisFrance
| | - Jean‐Claude Dussaule
- Institut National de la Santé et de la Recherche Médicale (INSERM)Unité Mixte de Recherche (UMR) S 702, Hôpital Tenon, Assistance Publique–Hôpitaux de Paris (AP‐HP)ParisFrance
- Université Pierre et Marie Curie (UPMC), Paris 6 UniversityParisFrance
- Department of PhysiologySaint‐Antoine Hospital, AP‐HPParisFrance
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Zhang C, Boini KM, Xia M, Abais JM, Li X, Liu Q, Li PL. Activation of Nod-like receptor protein 3 inflammasomes turns on podocyte injury and glomerular sclerosis in hyperhomocysteinemia. Hypertension 2012; 60:154-62. [PMID: 22647887 DOI: 10.1161/hypertensionaha.111.189688] [Citation(s) in RCA: 137] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Inflammasome is a multiprotein complex consisting of Nod-like receptor protein 3 (NALP3), apoptosis-associated speck-like protein (ASC), and caspase 1 or 5, which functions to switch on the inflammatory process. The present study hypothesized that the formation and activation of NALP3 inflammasomes turn on podocyte injury leading to glomerulosclerosis during hyperhomocysteinemia (hHcys). RT-PCR and Western blot analysis demonstrated that murine podocytes expressed 3 essential components of the NALP3 inflammasome complex, namely, NALP3, ASC, and caspase 1. Treatment of podocytes with l-homocysteine induced the formation of NALP3 inflammasome complex, an increase in caspase 1 activity, podocyte cytoskeleton rearrangement, and decreased production of vascular endothelial growth factor from podocytes, which were all blocked by silencing the ASC gene or inhibiting caspase 1 activity. In mice with hHcys induced by feeding them a folate-free diet, NALP3 inflammasome formation and activation in glomerular podocytes were detected at an early stage, as shown by confocal microscopy, size exclusion chromatography of the assembled inflammasome complex, and increased interleukin-1β production in glomeruli. Locally silencing the ASC gene in the kidney significantly reduced NALP3 inflammasome formation and interleukin 1β production in glomeruli of mice with hHcys. Pathologically, hHcys-associated albuminuria, foot process effacement of podocytes, loss of podocyte slit diaphragm molecules, and glomerulosclerosis at the late stage were significantly improved by local ASC gene silencing or by caspase 1 inhibition. In conclusion, NALP3 inflammasome formation and activation on stimulation of homocysteine are important molecular mechanisms triggering podocyte injury and ultimately resulting in glomerulosclerosis in hHcys.
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Affiliation(s)
- Chun Zhang
- Department of Pharmacology and Toxicology, Medical College of Virginia, Virginia Commonwealth University, 410 N 12th St, Richmond, VA 23298, USA
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Schreiber A, Pham CTN, Hu Y, Schneider W, Luft FC, Kettritz R. Neutrophil serine proteases promote IL-1β generation and injury in necrotizing crescentic glomerulonephritis. J Am Soc Nephrol 2012; 23:470-82. [PMID: 22241891 DOI: 10.1681/asn.2010080892] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The pathogenesis of anti-neutrophil cytoplasmic antibody (ANCA)-associated necrotizing crescentic GN (NCGN) is incompletely understood. Dipeptidyl peptidase I (DPPI) is a cysteine protease required for the activation of neutrophil serine proteases (NSPs) cathepsin G, neutrophil elastase, and proteinase 3, which are enzymes that modulate inflammation. We used a mouse model of anti-myeloperoxidase (MPO) antibody-induced NCGN to determine whether active NSPs contribute to its pathogenesis. MPO-deficient animals immunized with murine MPO, irradiated, and transplanted with wild-type bone marrow developed NCGN. In contrast, transplantation with bone marrow that lacked DPPI or lacked both neutrophil elastase and proteinase 3 protected mice from NCGN induced by anti-MPO antibody. The kidneys of mice reconstituted with DPPI-deficient bone marrow generated significantly less IL-1β than did those of mice reconstituted with wild-type bone marrow; similarly, in vitro, DPPI-deficient monocytes produced significantly less IL-1β in response to anti-MPO antibody than did wild-type monocytes. This reduction in IL-1β was NSP dependent; exogenous addition of PR3 restored IL-β production in DPPI-deficient monocytes. Last, the IL-1 receptor antagonist anakinra protected animals against anti-MPO antibody-induced NCGN (16.7%±6.0% versus 2.4%±1.7% crescents), suggesting that IL-1β is a critical inflammatory mediator in this model. These data suggest that the development of anti-MPO antibody-induced NCGN requires NSP-dependent IL-1β generation and that these processes may provide therapeutic targets for ANCA-mediated diseases in humans.
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Affiliation(s)
- Adrian Schreiber
- Max Delbrück Center for Molecular Medicine, Charité Berlin, Berlin, Germany.
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Lichtnekert J, Kulkarni OP, Mulay SR, Rupanagudi KV, Ryu M, Allam R, Vielhauer V, Muruve D, Lindenmeyer MT, Cohen CD, Anders HJ. Anti-GBM glomerulonephritis involves IL-1 but is independent of NLRP3/ASC inflammasome-mediated activation of caspase-1. PLoS One 2011; 6:e26778. [PMID: 22046355 PMCID: PMC3203143 DOI: 10.1371/journal.pone.0026778] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Accepted: 10/04/2011] [Indexed: 12/22/2022] Open
Abstract
IL-1β and IL-18 are proinflammatory cytokines that contribute to renal immune complex disease, but whether IL-1β and IL-18 are mediators of intrinsic glomerular inflammation is unknown. In contrast to other cytokines the secretion of IL-1β and IL-18 requires a second stimulus that activates the inflammasome-ASC-caspase-1 pathway to cleave pro-IL-1β and -IL-18 into their mature and secretable forms. As the NLRP3 inflammasome and caspase-1 were shown to contribute to postischemic and postobstructive tubulointerstitial inflammation, we hypothesized a similar role for NLRP3, ASC, and caspase-1 in glomerular immunopathology. This concept was supported by the finding that lack of IL-1R1 reduced antiserum-induced focal segmental necrosis, crescent formation, and tubular atrophy when compared to wildtype mice. Lack of IL-18 reduced tubular atrophy only. However, NLRP3-, ASC- or caspase-1-deficiency had no significant effect on renal histopathology or proteinuria of serum nephritis. In vitro studies with mouse glomeruli or mesangial cells, glomerular endothelial cells, and podocytes did not reveal any pro-IL-1β induction upon LPS stimulation and no caspase-1 activation after an additional exposure to the NLRP3 agonist ATP. Only renal dendritic cells, which reside mainly in the tubulointerstitium, expressed pro-IL-1β and were able to activate the NLRP3-caspase-1 axis and secrete mature IL-1β. Together, the NLRP3-ASC-caspase-1 axis does not contribute to intrinsic glomerular inflammation via glomerular parenchymal cells as these cannot produce IL-1β during sterile inflammation.
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Affiliation(s)
- Julia Lichtnekert
- Nephrological Center, Medical Policlinic, University of Munich, Munich, Germany
| | - Onkar P. Kulkarni
- Nephrological Center, Medical Policlinic, University of Munich, Munich, Germany
| | - Shrikant R. Mulay
- Nephrological Center, Medical Policlinic, University of Munich, Munich, Germany
| | | | - Mi Ryu
- Nephrological Center, Medical Policlinic, University of Munich, Munich, Germany
| | - Ramanjaneyulu Allam
- Nephrological Center, Medical Policlinic, University of Munich, Munich, Germany
| | - Volker Vielhauer
- Nephrological Center, Medical Policlinic, University of Munich, Munich, Germany
| | - Dan Muruve
- Division of Nephrology and Hypertension, Department of Medicine, Department of Medicine and the Immunology Research Group, Institute of Infection, Immunity and Inflammation, University of Calgary, Calgary, Canada
| | - Maja T. Lindenmeyer
- Division of Nephrology and Institute of Physiology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Clemens D. Cohen
- Division of Nephrology and Institute of Physiology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Hans-Joachim Anders
- Nephrological Center, Medical Policlinic, University of Munich, Munich, Germany
- * E-mail:
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Sui W, Tan J, Guo J, Du G, Dai Y. An Altered Th1/Th2 and Pro-Inflammatory Cytokine Profile in Patients with End-Stage Renal Disease Detected by Suspension Array Technology. Ren Fail 2009; 31:1-5. [DOI: 10.1080/08860220802516449] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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40
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Hahn WH, Cho BS, Kim SD, Kim SK, Kang S. Interleukin-1 cluster gene polymorphisms in childhood IgA nephropathy. Pediatr Nephrol 2009; 24:1329-36. [PMID: 19280228 DOI: 10.1007/s00467-009-1146-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2008] [Revised: 01/23/2009] [Accepted: 02/03/2009] [Indexed: 11/28/2022]
Abstract
We have carried out a study with the aim of investigating the association between single nucleotide polymorphisms (SNPs) of the IL-1 gene cluster and childhood IgA nephropathy (IgAN). SNPs of the IL-1 alpha, IL-1 beta, and IL-1 receptor antagonist (RN) genes (IL1A, IL1B, and IL1RN, respectively) were analyzed in 182 patients with childhood IgAN and in 500 healthy controls. The IgAN patients were also dichotomized and compared with respect to proteinuria (<4 mg and >or=4 mg/m(2) per hour, respectively), the presence or absence of podocyte foot process effacement, and the presence of pathologically early and advanced disease markers, such as interstitial fibrosis, tubular atrophy, or global sclerosis. Significant differences in SNP frequencies were observed for the IL1B and IL1RN genes (rs1143627, rs3917356, and rs1143633 in the IL1B gene, and rs928940, rs439154, and rs315951 in the IL1RN gene). Moreover, rs1143627, rs3917356, and rs1143633 of IL1B were found to be significantly associated with the presence of podocyte foot process effacement. Our results suggest that the IL1B and IL1RN genes are associated with increased susceptibility to IgAN in children. They also suggest that the development of proteinuria in IgAN is related to IL1A and that podocyte foot process effacement is associated with IL1B.
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Affiliation(s)
- Won Ho Hahn
- Department of Pediatrics, East West Kidney Diseases Research Institute, School of Medicine, Kyung Hee University, Dondaemun-gu, Hoegi-dong #1, Seoul, 130-701, Korea
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Jones LK, O’Sullivan KM, Semple T, Kuligowski MP, Fukami K, Ma FY, Nikolic-Paterson DJ, Holdsworth SR, Kitching AR. IL-1RI deficiency ameliorates early experimental renal interstitial fibrosis. Nephrol Dial Transplant 2009; 24:3024-32. [DOI: 10.1093/ndt/gfp214] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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42
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Schiffer L, Bethunaickan R, Ramanujam M, Huang W, Schiffer M, Tao H, Madaio MP, Madaio MM, Bottinger EP, Davidson A. Activated renal macrophages are markers of disease onset and disease remission in lupus nephritis. THE JOURNAL OF IMMUNOLOGY 2008; 180:1938-47. [PMID: 18209092 DOI: 10.4049/jimmunol.180.3.1938] [Citation(s) in RCA: 173] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Costimulatory blockade with CTLA4Ig and anti-CD40L along with a single dose of cyclophosphamide induces remission of systemic lupus erythematosus nephritis in NZB/W F(1) mice. To understand the mechanisms for remission and for impending relapse, we examined the expression profiles of 61 inflammatory molecules in the perfused kidneys of treated mice and untreated mice at different stages of disease. Further studies using flow cytometry and immunohistochemistry allowed us to determine the cellular origins of several key markers. We show that only a limited set of inflammatory mediators is expressed in the kidney following glomerular immune complex deposition but before the onset of proteinuria. Formation of a lymphoid aggregate in the renal pelvis precedes the invasion of the kidney by inflammatory cells. Regulatory molecules are expressed early in the disease process and during remission but do not prevent the inevitable progression of active inflammation. Onset of proliferative glomerulonephritis and proteinuria is associated with activation of the renal endothelium, expression of chemokines that mediate glomerular cell infiltration, and infiltration by activated dendritic cells and macrophages that migrate to different topographical areas of the kidney but express a similar profile of inflammatory cytokines. Increasing interstitial infiltration by macrophages and progressive tubular damage, manifested by production of lipocalin-2, occur later in the disease process. Studies of treated mice identify a type II (M2b)-activated macrophage as a marker of remission induction and impending relapse and suggest that therapy for systemic lupus erythematosus nephritis should include strategies that prevent both activation of monocytes and their migration to the kidney.
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Affiliation(s)
- Lena Schiffer
- Autoimmunity Center, Feinstein Institute for Medical Research, Manhasset, NY 11030, USA
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43
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Holdsworth SR, Tipping PG. Leukocytes in glomerular injury. Semin Immunopathol 2007; 29:355-74. [DOI: 10.1007/s00281-007-0097-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2007] [Accepted: 09/28/2007] [Indexed: 12/22/2022]
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44
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Abstract
Cytokines play central roles in both innate and adaptive immune responses that lead to renal inflammation. They are involved systemically in cross-talk between antigen-presenting cells, leukocytes, and regulatory cells to initiate and modulate nephritogenic immunity. Within the kidney, cytokines play a central role in signaling between infiltrating leukocytes and intrinsic renal cells and orchestrate the effector responses that lead to renal damage. Glomerulonephritis (GN) is an important cause of renal inflammation leading to renal failure that results from adaptive responses targeted at the kidney. Animal models of GN have shown that cytokines play critical roles in initiation and modulation of renal inflammatory responses through their ability to modulate the T helper 1/T helper 2 balance of nephritogenic immune responses. Evidence from clinical studies is now confirming the importance of this paradigm in directing the inflammatory mechanisms, histologic patterns, and clinical consequences of human GN. Cytokines also have critical intrarenal effector roles in the development, perpetuation, and resolution of GN. The proinflammatory role of intrarenal cytokine production by leukocytes in GN is well recognized, but, more recently, the role of intrinsic renal cell cytokine production in amplifying renal inflammation has been shown in animal models of GN. Studies showing benefits of specific anticytokine therapies directed at tumor necrosis factor in human GN are now appearing.
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Affiliation(s)
- Peter G Tipping
- Centre for Inflammatory Diseases, Department of Medicine, Monash Institute for Medical Research, Monash University, Clayton, Victoria, Australia.
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45
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Rodriguez W, Mold C, Kataranovski M, Hutt JA, Marnell LL, Verbeek JS, Du Clos TW. C-reactive protein-mediated suppression of nephrotoxic nephritis: role of macrophages, complement, and Fcgamma receptors. THE JOURNAL OF IMMUNOLOGY 2007; 178:530-8. [PMID: 17182593 DOI: 10.4049/jimmunol.178.1.530] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
C-reactive protein (CRP) is a member of the pentraxin family of proteins and an acute phase reactant. CRP modulates the response to inflammatory stimuli including LPS and C5a. We recently demonstrated that CRP prevents and reverses proteinuria in accelerated nephrotoxic nephritis (NTN). NTN is a model of active inflammatory immune complex-mediated nephritis induced by injection of antiglomerular basement membrane. CRP treatment prevented the induction of NTN in C57BL/6 (B6) mice, increased survival, and reversed ongoing nephritis. Protection was associated with a decrease in IL-1beta and chemokines in the kidney and peritoneal cells as measured by quantitative RT-PCR. However, IL-10(-/-) mice were not protected by CRP either when given before disease onset or when disease activity was maximal. FcgammaRI(-/-) mice developed NTN, but were only transiently protected by CRP treatment. This transient protection was abrogated by cobra venom factor depletion of complement from FcgammaRI(-/-) mice. However, complement depletion did not prevent CRP-mediated protection in B6 mice, and CRP was protective in C3(-/-) mice. The role of macrophages in the protection provided by CRP was tested by treating B6 mice with liposomes containing clodronate. Clodronate-containing liposomes deplete mice of splenic and hepatic macrophages for 5-7 days. Pretreatment of NTN mice with clodronate but not control liposomes completely prevented CRP-mediated protection. These studies suggest that CRP mediates protection from NTN through the induction of IL-10 and that macrophages are required. In addition, FcgammaRI plays an important role but is not the sole mediator of CRP-mediated protection.
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Affiliation(s)
- Wilfredo Rodriguez
- Department of Internal Medicine and Department of Molecular Genetics and Microbiology, University of New Mexico, Albuquerque, NM 87131, USA
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46
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Vielhauer V, Anders HJ, Schlöndorff D. Chemokines and Chemokine Receptors as Therapeutic Targets in Lupus Nephritis. Semin Nephrol 2007; 27:81-97. [PMID: 17336691 DOI: 10.1016/j.semnephrol.2006.09.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Recruitment of leukocytes is a characteristic feature of tissue injury in systemic lupus erythematosus, including lupus nephritis. Locally secreted chemokines and their receptors are important mediators of leukocyte recruitment to the specific sites of immune complex injury, and contribute to renal inflammatory disease in the initiation and progression phase. Therefore, chemokines and chemokine receptors represent potential therapeutic targets in lupus nephritis. In this review we summarize available experimental and human data supporting their functional role in lupus nephritis. Moreover, interventional studies with chemokine and chemokine receptor antagonists that show the therapeutic potential of chemokine antagonists in experimental models of lupus nephritis and potentially in human renal disease are discussed.
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Affiliation(s)
- Volker Vielhauer
- Medizinische Poliklinik Innenstadt, Klinikum der Universität München, Ludwig-Maximilians-University, Munich, Germany
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47
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Abstract
Crescent formation in glomerulonephritis (GN) is a manifestation of severe glomerular injury that usually results in a poor clinical outcome. In humans, crescentic GN is frequently associated with evidence of either systemic or organ-specific autoimmunity. T cells play a major role in initiation of adaptive immune responses that lead to crescentic injury. In experimental models of crescentic GN, Th1 predominant immune responses have been shown to promote crescent formation. Perturbation of regulatory T cell function may contribute to development of autoimmune crescentic GN. The presence of T cells and macrophages in crescentic glomeruli, frequently in the absence of humoral mediators of immunity, suggest a dominant effector role for T cells in crescentic GN. The association of cellular immune mediators with local fibrin deposition implicates cell-mediated "delayed-type hypersensitivity-like" mechanisms in crescent formation. Intrinsic renal cells also contribute to T cell-driven effector mechanisms in crescentic GN, via expression of MHC II and co-stimulatory molecules and by production of chemokines and cytokines that amplify leukocyte recruitment and injury.
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Affiliation(s)
- Peter G Tipping
- Monash University, Department of Medicine, Monash Medical Centre, 246 Clayton Rd, Clayton, Victoria, Australia.
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48
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Tipping PG, Timoshanko J. Contributions of intrinsic renal cells to crescentic glomerulonephritis. Nephron Clin Pract 2005; 101:e173-8. [PMID: 16155400 DOI: 10.1159/000088165] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The pro-inflammatory contributions of leukocytes, particularly macrophages and T cells, to the immunopathogenesis of proliferative forms of glomerulonephritis (GN) have been clearly established by various techniques, including in vivo depletion studies in experimental models. The evidence for an active pro-inflammatory role for intrinsic renal cells in GN has relied on studies demonstrating their production of pro-inflammatory mediators in vitro and during the development of GN. Until recently,the specific in vivo contributions of mediators from intrinsic renal cells to inflammatory injury in GN have proven difficult to define. Utilising 'chimeric' mice as a tool, several studies have explored the involvement of intrinsic renal cells via their production of cytokines and other key pro-inflammatory molecules. These studies provide evidence of important functional contributions of intrinsic renal cells to inflammatory injury in GN via their expression of cytokines, cytokine receptors, MHC-II and co-stimulatory molecules. They suggest a sequence of interactions between cytokines from leukocytes and intrinsic renal cells and important contributions of glomerular epithelial cell proliferation to crescent formation.
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Affiliation(s)
- Peter G Tipping
- Centre for Inflammatory Diseases, Department of Medicine, Monash University, Clayton, Australia.
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49
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Timoshanko JR, Kitching AR, Semple TJ, Holdsworth SR, Tipping PG. Granulocyte Macrophage Colony-Stimulating Factor Expression by Both Renal Parenchymal and Immune Cells Mediates Murine Crescentic Glomerulonephritis. J Am Soc Nephrol 2005; 16:2646-56. [PMID: 16033860 DOI: 10.1681/asn.2004121107] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
GM-CSF has previously been demonstrated to be important in crescentic glomerulonephritis (GN). As both renal parenchymal cells and infiltrating inflammatory cells produce GM-CSF, their separate contributions to inflammatory renal injury were investigated by creation of two different types of GM-CSF chimeric mice: (1) GM-CSF-deficient (GM-CSF-/-)-->wild-type (WT) chimeras with leukocytes that are unable to produce GM-CSF and (2) WT-->GM-CSF-/- chimeras with deficient renal cell GM-CSF expression. Crescentic anti-glomerular basement membrane GN was induced in WT, GM-CSF(-/-)-->WT chimeras, WT-->GM-CSF-/- chimeras, and GM-CSF-/- mice by planting an antigen (sheep globulin) in their glomeruli. WT mice developed severe crescentic GN, whereas GM-CSF-/- were protected from development of disease. Glomerular T cell recruitment, CD40+ glomerular cells, and renal IFN-gamma and TNF expression were similar in both chimeras and WT mice but significantly reduced in GM-CSF-/- mice, indicating that either leukocyte or renal sources of GM-CSF are sufficient to drive these aspects of the inflammatory response. Restricted expression of GM-CSF revealed a major role for renal cell-derived GM-CSF but a minor role for leukocyte-derived GM-CSF in the formation of cellular crescents; glomerular MHC II expression; serum creatinine; and monocyte chemoattractant protein-1, vascular cellular adhesion molecule, and IL-1beta expression. Glomerular macrophage accumulation, proteinuria, and interstitial infiltrate were equivalent in both chimeric groups but intermediate between WT and GM-CSF-/-, indicating that both sources are required for the full development of glomerular injury in crescentic GN.
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Affiliation(s)
- Jennifer R Timoshanko
- Centre for Inflammatory Diseases, Monash University, Department of Medicine, Monash Medical Center, Clayton, 3168 Victoria, Australia.
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50
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Current World Literature. Curr Opin Nephrol Hypertens 2005. [DOI: 10.1097/01.mnh.0000172731.05865.69] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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