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Kwok A, Domingos JA, Oh J, Chan P, Ong JJL, Nankervis L, Ling J, Nichol R, Gibson-Kueh S. The Pathology and Blood Biochemistry of Juvenile Lates calcarifer on Diets Contaminated With Mycotoxins, Histamines and Rancid Fats-A Case Study. JOURNAL OF FISH DISEASES 2024:e14034. [PMID: 39440685 DOI: 10.1111/jfd.14034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2024] [Revised: 09/16/2024] [Accepted: 10/04/2024] [Indexed: 10/25/2024]
Abstract
Mycotoxins, originating from contaminated raw materials or suboptimal feed storage, are a growing concern in tropical aquaculture. Common fungi such as Aspergillus spp. and Fusarium spp. produce mycotoxins including aflatoxin, fumonisin, deoxynivalenol and zearalenone. High doses or prolonged exposure (weeks) to low doses of these mycotoxins (< 20 μg/kg) can depress growth, immunity, and cause mortality. This study investigated poor growth and low survival in juvenile Asian seabass, Lates calcarifer fed two different diets (FM40 and ABS3) for 5 weeks. Analysis of these diets revealed high peroxide values, multiple mycotoxins and high histamine levels. Fish fed the FM40 diet, which was contaminated with aflatoxin B1 (13.2 μg/kg), aflatoxin B2 (1.9 μg/kg), deoxynivalenol (29.5 μg/kg), alternariol (2.2 μg/kg), elevated peroxide value (45.91 mEq/kg), and histamine (129.51 mg/kg) developed mild bile duct hyperplasia, depressed total serum proteins (50.40 ± 10.06 g/L), markedly elevated blood potassium (8.2 ± 0.18 mmol/L), and heavy iron deposits in splenic melanomacrophage centres (Perl's stain) indicative of increased haemolysis. The presence of multiple cytotoxic mycotoxins in FM40 diet could explain the increased haemolysis and elevated blood potassium. In contrast, fish fed the ABS3 diet, which had high histamine levels (210.05 mg/kg), exhibited protein-losing nephropathy with multifocal fibrin plugs (Martius scarlet blue stain) indicating acute renal damage, and elevated blood calcium and phosphorus levels. Histamine is metabolised and excreted through the kidneys and known to induce renal arteriolar constriction, disrupt glomerular filtration barrier and increase permeability resulting in protein loss. This study shows that blood biochemistry and histopathology are useful diagnostic tools for assessing the impact of mycotoxins and histamines on fish health.
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Affiliation(s)
- Aidan Kwok
- James Cook University Singapore, Singapore City, Singapore
| | - Jose A Domingos
- James Cook University Singapore, Singapore City, Singapore
- Tropical Futures Institute, James Cook University, Singapore City, Singapore
| | - Joseph Oh
- James Cook University Singapore, Singapore City, Singapore
- Tropical Futures Institute, James Cook University, Singapore City, Singapore
| | - Piero Chan
- Asian School of the Environment, Nanyang Technological University, Singapore City, Singapore
| | - Joyce J L Ong
- Asian School of the Environment, Nanyang Technological University, Singapore City, Singapore
| | - Leo Nankervis
- Centre for Sustainable Tropical Fisheries and Aquaculture, College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
| | - Jeffrey Ling
- James Cook University Singapore, Singapore City, Singapore
| | | | - Susan Gibson-Kueh
- James Cook University Singapore, Singapore City, Singapore
- Tropical Futures Institute, James Cook University, Singapore City, Singapore
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2
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Nan QY, Piao SG, Jin JZ, Chung BH, Yang CW, Li C. Pathogenesis and management of renal fibrosis induced by unilateral ureteral obstruction. Kidney Res Clin Pract 2024; 43:586-599. [PMID: 38325866 PMCID: PMC11467363 DOI: 10.23876/j.krcp.23.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 11/02/2023] [Accepted: 11/10/2023] [Indexed: 02/09/2024] Open
Abstract
Regardless of the underlying etiology, renal fibrosis is the final histological outcome of progressive kidney disease. Unilateral ureteral obstruction (UUO) is an ideal and reproducible experimental rodent model of renal fibrosis, which is characterized by tubulointerstitial inflammatory responses, accumulation of extracellular matrix, tubular dilatation and atrophy, and fibrosis. The magnitude of UUO-induced renal fibrosis is experimentally manipulated by the species chosen, animal age, and the severity and duration of the obstruction, while relief of the obstruction allows the animal to recover from fibrosis. The pathogenesis of renal fibrosis is complex and multifactorial and is orchestrated by activation of renin-angiotensin system (RAS), oxidative stress, inflammatory response, transforming growth factor beta 1-Smad pathway, activated myofibroblasts, cell death (apoptosis, autophagy, ferroptosis, and necroptosis), destruction of intracellular organelles, and signaling pathway. The current therapeutic approaches have limited efficacy. Inhibition of RAS and use of antioxidants and antidiabetic drugs, such as inhibitors of sodium-glucose cotransporter 2 and dipeptidyl peptidase-4, have recently gained attention as therapeutic strategies to prevent renal scarring. This literature review highlights the state of the art regarding the molecular mechanisms relevant to the management of renal fibrosis caused by UUO.
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Affiliation(s)
- Qi Yan Nan
- Department of Nephrology, Yanbian University Hospital, Yanji, China
- Department of Intensive Care Unit, Yanbian University Hospital, Yanji, China
| | - Shang Guo Piao
- Department of Nephrology, Yanbian University Hospital, Yanji, China
| | - Ji Zhe Jin
- Department of Nephrology, Yanbian University Hospital, Yanji, China
| | - Byung Ha Chung
- Division of Nephrology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Chul Woo Yang
- Division of Nephrology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Can Li
- Department of Nephrology, Yanbian University Hospital, Yanji, China
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Yoon B, Kim H, Jung SW, Park J. Single-cell lineage tracing approaches to track kidney cell development and maintenance. Kidney Int 2024; 105:1186-1199. [PMID: 38554991 DOI: 10.1016/j.kint.2024.01.045] [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: 09/08/2023] [Revised: 12/06/2023] [Accepted: 01/09/2024] [Indexed: 04/02/2024]
Abstract
The kidney is a complex organ consisting of various cell types. Previous studies have aimed to elucidate the cellular relationships among these cell types in developing and mature kidneys using Cre-loxP-based lineage tracing. However, this methodology falls short of fully capturing the heterogeneous nature of the kidney, making it less than ideal for comprehensively tracing cellular progression during kidney development and maintenance. Recent technological advancements in single-cell genomics have revolutionized lineage tracing methods. Single-cell lineage tracing enables the simultaneous tracing of multiple cell types within complex tissues and their transcriptomic profiles, thereby allowing the reconstruction of their lineage tree with cell state information. Although single-cell lineage tracing has been successfully applied to investigate cellular hierarchies in various organs and tissues, its application in kidney research is currently lacking. This review comprehensively consolidates the single-cell lineage tracing methods, divided into 4 categories (clustered regularly interspaced short palindromic repeat [CRISPR]/CRISPR-associated protein 9 [Cas9]-based, transposon-based, Polylox-based, and native barcoding methods), and outlines their technical advantages and disadvantages. Furthermore, we propose potential future research topics in kidney research that could benefit from single-cell lineage tracing and suggest suitable technical strategies to apply to these topics.
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Affiliation(s)
- Baul Yoon
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Hayoung Kim
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Su Woong Jung
- Division of Nephrology, Department of Internal Medicine, College of Medicine, Kyung Hee University, Seoul, Republic of Korea; Division of Nephrology, Department of Internal Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea.
| | - Jihwan Park
- School of Life Sciences, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea.
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4
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Tan Y, Fu Y, Yao H, Li H, Wu X, Guo Z, Liang X, Kuang M, Tan L, Jing C. The relationship of organophosphate flame retardants with hyperuricemia and gout via the inflammatory response: An integrated approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168169. [PMID: 37918745 DOI: 10.1016/j.scitotenv.2023.168169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/23/2023] [Accepted: 10/26/2023] [Indexed: 11/04/2023]
Abstract
BACKGROUND Evidence regarding the relationships between organophosphate flame retardants (OPFRs) and hyperuricemia and gout as well as the underlying mechanisms remains scarce, but some evidence indicates that inflammation might play a key role. OBJECTIVES Using an integrated approach, we aim to elucidate the associations of urinary metabolite OPFRs (m-OPFRs) with hyperuricemia and gout. METHODS Cross-sectional analyses using data from the National Health and Nutrition Examination Survey were performed to reveal the associations. Adults with complete data on five m-OPFRs with high detection frequencies and outcomes were enrolled. We used multivariate logistic regression, restricted cubic spline (RCS), and Bayesian kernel machine regression (BKMR) methods to account for single, nonlinear, and joint effects. The mediating effect of the inflammatory response was also estimated. Moreover, adverse outcome pathways (AOPs) based on network analysis were further constructed to reveal the underlying mechanism. RESULTS Multivariate logistic models revealed that bis(2-chloroethyl) phosphate (BCEP) significantly increased risk of hyperuricemia (OR [95 % CI]: 1.165 [1.047, 1.296]) in the fully adjusted model. Elevated levels of bis(1-chloro-2-propyl) phosphate were associated with gout (OR [95 % CI]: 1.293 [1.015, 1.647]). No nonlinear relationship was observed in RCS. There was a positive association between mixed m-OPFRs and hyperuricemia risk in BMKR, with bis(1,3-dichloro-2-propyl) phosphate and BCEP being the main contributors (PIP > 0.5). We found that the inflammatory response significantly mediated the association between BCEP and hyperuricemia (P < 0.05). Network topology analysis identified seven genes and six phenotypes related to OPFR exposure and hyperuricemia. The AOP framework suggested that the inflammatory response, especially the activation of the TNF pathway, played a core role in the above relationships. CONCLUSION Our results first revealed that individual and mixed OPFRs were associated with hyperuricemia, in which the inflammatory response plays an important role. Further longitudinal studies are warranted to consolidate or refute our main findings.
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Affiliation(s)
- Yuxuan Tan
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou 510632, Guangdong, PR China
| | - Yingyin Fu
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou 510632, Guangdong, PR China
| | - Huojie Yao
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou 510632, Guangdong, PR China
| | - Haiying Li
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou 510632, Guangdong, PR China
| | - Xiaomei Wu
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou 510632, Guangdong, PR China
| | - Ziang Guo
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou 510632, Guangdong, PR China
| | - Xiao Liang
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou 510632, Guangdong, PR China
| | - Mincong Kuang
- Center for Disease Control and Prevention of Doumen District, Zhuhai 519125, Guangdong, PR China
| | - Lei Tan
- Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, Guangdong, PR China
| | - Chunxia Jing
- Department of Epidemiology, School of Medicine, Jinan University, No.601 Huangpu Ave West, Guangzhou 510632, Guangdong, PR China; Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 511443, PR China.
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Juha M, Molnár A, Jakus Z, Ledó N. NETosis: an emerging therapeutic target in renal diseases. Front Immunol 2023; 14:1253667. [PMID: 37744367 PMCID: PMC10514582 DOI: 10.3389/fimmu.2023.1253667] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/15/2023] [Indexed: 09/26/2023] Open
Abstract
Introduction Neutrophil extracellular traps (NETs) are web-like structures composed of nuclear and granular components. The primary role of NETS is to prevent the dissemination of microbes and facilitate their elimination. However, this process is accompanied by collateral proinflammatory adverse effects when the NET release becomes uncontrollable, or clearance is impaired. Although NET-induced organ damage is conducted primarily and indirectly via immune complexes and the subsequent release of cytokines, their direct effects on cells are also remarkable. NETosis plays a critical pathogenic role in several renal disorders, such as the early phase of acute tubular necrosis, anti-neutrophil cytoplasmic antibody-mediated renal vasculitis, lupus nephritis, thrombotic microangiopathies, anti-glomerular basement membrane disease, and diabetic nephropathy. Their substantial contribution in the course of these disorders makes them a desirable target in the therapeutic armamentarium. This article gives an in-depth review of the heterogeneous pathogenesis and physiological regulations of NETosis and its pivotal role in renal diseases. Based on the pathogenesis, the article also outlines the current therapeutic options and possible molecular targets in the treatment of NET-related renal disorders. Methods We carried out thorough literature research published in PubMed and Google Scholar, including a comprehensive review and analysis of the classification, pathomechanisms, and a broad spectrum of NET-related kidney disorders. Conclusions NETosis plays a pivotal role in certain renal diseases. It initiates and maintains inflammatory and autoimmune disorders, thus making it a desirable target for improving patient and renal outcomes. Better understanding and clinical translation of the pathogenesis are crucial aspects to treatment, for improving patient, and renal outcomes.
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Affiliation(s)
- Márk Juha
- Department of Internal Medicine and Oncology, Semmelweis University, Budapest, Hungary
| | - Adél Molnár
- Department of Internal Medicine and Oncology, Semmelweis University, Budapest, Hungary
| | - Zoltán Jakus
- Department of Physiology, Semmelweis University, Budapest, Hungary
| | - Nóra Ledó
- Department of Internal Medicine and Oncology, Semmelweis University, Budapest, Hungary
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Song N, Xu Y, Paust HJ, Panzer U, de Las Noriega MM, Guo L, Renné T, Huang J, Meng X, Zhao M, Thaiss F. IKK1 aggravates ischemia-reperfusion kidney injury by promoting the differentiation of effector T cells. Cell Mol Life Sci 2023; 80:125. [PMID: 37074502 PMCID: PMC10115737 DOI: 10.1007/s00018-023-04763-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 03/10/2023] [Accepted: 03/20/2023] [Indexed: 04/20/2023]
Abstract
Ischemia-reperfusion injury (IRI) is one of the major causes of acute kidney injury (AKI), and experimental work has revealed detailed insight into the inflammatory response in the kidney. T cells and NFκB pathway play an important role in IRI. Therefore, we examined the regulatory role and mechanisms of IkappaB kinase 1 (IKK1) in CD4+T lymphocytes in an experimental model of IRI. IRI was induced in CD4cre and CD4IKK1Δ mice. Compared to control mice, conditional deficiency of IKK1 in CD4+T lymphocyte significantly decreased serum creatinine, blood urea nitrogen (BUN) level, and renal tubular injury score. Mechanistically, lack in IKK1 in CD4+T lymphocytes reduced the ability of CD4 lymphocytes to differentiate into Th1/Th17 cells. Similar to IKK1 gene ablation, pharmacological inhibition of IKK also protected mice from IRI. Together, lymphocyte IKK1 plays a pivotal role in IRI by promoting T cells differentiation into Th1/Th17 and targeting lymphocyte IKK1 may be a novel therapeutic strategy for IRI.
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Affiliation(s)
- Ning Song
- Department of Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Youzheng St 23, Harbin, 150001, China
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg, 20246, Germany
| | - Yang Xu
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Hans-Joachim Paust
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg, 20246, Germany
| | - Ulf Panzer
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg, 20246, Germany
| | | | - Linlin Guo
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg, 20246, Germany
| | - Thomas Renné
- Institute for Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
- Irish Centre for Vascular Biology, School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland
- Center for Thrombosis and Hemostasis (CTH), Johannes Gutenberg University Medical Center, Mainz, 55131, Germany
| | - Jiabin Huang
- Institute for Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Xianglin Meng
- Department of Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Youzheng St 23, Harbin, 150001, China
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, 200032, People's Republic of China
- Heilongjiang Provincial Key Laboratory of Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Mingyan Zhao
- Department of Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Youzheng St 23, Harbin, 150001, China.
- Heilongjiang Provincial Key Laboratory of Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China.
| | - Friedrich Thaiss
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Martinistraße 52, Hamburg, 20246, Germany.
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Deficiency of mindin reduces renal injury after ischemia reperfusion. Mol Med 2022; 28:152. [PMID: 36510147 PMCID: PMC9743537 DOI: 10.1186/s10020-022-00578-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 11/21/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Acute renal injury (AKI) secondary to ischemia reperfusion (IR) injury continues to be a significant perioperative problem and there is no effective treatment. Mindin belongs to the mindin/F-spondin family and involves in inflammation, proliferation, and cell apoptosis. Previous studies have explored the biological functions of mindin in liver and brain ischemic injury, but its role in AKI is unknown. METHOD To investigate whether mindin has a pathogenic role, mindin knockout (KO) and wild-type (WT) mice were used to establish renal IR model. After 30 min of ischemia and 24 h of reperfusion, renal histology, serum creatinine, and inflammatory response were examined to assess kidney injury. In vitro, proinflammatory factors and inflammatory signaling pathways were measured in mindin overexpression or knockdown and vector cells after hypoxia/reoxygenation (HR). RESULTS Following IR, the kidney mindin level was increased in WT mice and deletion of mindin provided significant protection for mice against IR-induced renal injury as manifested by attenuated the elevation of serum creatinine and blood urea nitrogen along with less severity for histological alterations. Mindin deficiency significantly suppressed inflammatory cell infiltration, TNF-α and MCP-1 production following renal IR injury. Mechanistic studies revealed that mindin deficiency inhibits TLR4/JNK/NF-κB signaling activation. In vitro, the expression levels of TNF-α and MCP-1 were increased in mindin overexpression cells compared with vector cells following HR. Moreover, TLR4/JNK/NF-κB signaling activation was elevated in the mindin overexpression cells in response to HR stimulation while mindin knockdown inhibited the activation of TLR4/JNK/ NF-κB signaling after HR in vitro. Further study showed that mindin protein interacted directly with TLR4 protein. And more, mindin protein was confirmed to be expressed massively in renal tubule tissues of human hydronephrosis patients. CONCLUSION These data demonstrate that mindin is a critical modulator of renal IR injury through regulating inflammatory responses. TLR4/JNK/NF-κB signaling most likely mediates the biological function of mindin in this model of renal ischemia.
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8
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Lee K, Jang HR. Role of T cells in ischemic acute kidney injury and repair. Korean J Intern Med 2022; 37:534-550. [PMID: 35508946 PMCID: PMC9082442 DOI: 10.3904/kjim.2021.526] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 01/11/2022] [Indexed: 11/27/2022] Open
Abstract
Ischemic acute kidney injury (AKI) is a common medical problem with significant mortality and morbidity, affecting a large number of patients globally. Ischemic AKI is associated with intrarenal inflammation as well as systemic inflammation; thus, the innate and adaptive immune systems are implicated in the pathogenesis of ischemic AKI. Among various intrarenal immune cells, T cells play major roles in the injury process and in the repair mechanism affecting AKI to chronic kidney disease transition. Importantly, T cells also participate in distant organ crosstalk during AKI, which affects the overall outcomes. Therefore, targeting T cell-mediated pathways and T cell-based therapies have therapeutic promise for ischemic AKI. Here, we review the major populations of kidney T cells and their roles in ischemic AKI.
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Affiliation(s)
- Kyungho Lee
- Nephrology Division, Department of Medicine, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hye Ryoun Jang
- Nephrology Division, Department of Medicine, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
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SAP130 released by damaged tubule drives necroinflammation via miRNA-219c/Mincle signaling in acute kidney injury. Cell Death Dis 2021; 12:866. [PMID: 34556635 PMCID: PMC8460660 DOI: 10.1038/s41419-021-04131-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 08/14/2021] [Accepted: 08/26/2021] [Indexed: 12/30/2022]
Abstract
Tubules injury and immune cell activation are the common pathogenic mechanisms in acute kidney injury (AKI). However, the exact modes of immune cell activation following tubule damage are not fully understood. Here we uncovered that the release of cytoplasmic spliceosome associated protein 130 (SAP130) from the damaged tubular cells mediated necroinflammation by triggering macrophage activation via miRNA-219c(miR-219c)/Mincle-dependent mechanism in unilateral ureteral obstruction (UUO) and cisplatin-induced AKI mouse models, and in patients with acute tubule necrosis (ATN). In the AKI kidneys, we found that Mincle expression was tightly correlated to the necrotic tubular epithelial cells (TECs) with higher expression of SAP130, a damaged associated molecule pattern (DAMP), suggesting that SAP130 released from damaged tubular cells may trigger macrophage activation and necroinflammation. This was confirmed in vivo in which administration of SAP130-rich supernatant from dead TECs or recombinant SAP130 promoted Mincle expression and macrophage accumulation which became worsen with profound tubulointerstitial inflammation in LPS-primed Mincle WT mice but not in Mincle deficient mice. Further studies identified that Mincle was negatively regulated via miR-219c-3p in macrophages as miR-219c-3p bound Mincle 3′-UTR to inhibit Mincle translation. Besides, lentivirus-mediated renal miR-219c-3p overexpression blunted Mincle and proinflammatory cytokine expression as well as macrophage infiltration in the inflamed kidney of UUO mice. In conclusion, SAP130 is released by damaged tubules which elicit Mincle activation on macrophages and renal necroinflammation via the miR-219c-3p-dependent mechanism. Results from this study suggest that targeting miR-219c-3p/Mincle signaling may represent a novel therapy for AKI.
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10
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Boštjančič E, Večerić-Haler Ž, Kojc N. The Role of Immune-Related miRNAs in the Pathology of Kidney Transplantation. Biomolecules 2021; 11:biom11081198. [PMID: 34439863 PMCID: PMC8393721 DOI: 10.3390/biom11081198] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 08/07/2021] [Accepted: 08/10/2021] [Indexed: 01/04/2023] Open
Abstract
MicroRNAs (miRNAs) are members of the non-coding regulatory RNA family that play pivotal roles in physiological and pathological conditions, including immune response. They are particularly interesting as promising therapeutic targets, prognostic and diagnostic markers due to their easy detection in body fluids and stability. There is accumulating evidence that different miRNAs provide disease-specific signatures in liquid samples of distinct kidney injuries. Using experimental models and human samples, there have been numerous suggestions that immune-related miRNAs are also important contributors to the development of different kidney diseases as well as important markers for monitoring response after kidney transplantation. However, there are limited data for understanding their function in the molecular pathways of allograft pathologies. In our review, we focused on microRNAs that are related to different aspects of immune response after kidney transplantation.
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Affiliation(s)
- Emanuela Boštjančič
- Institute of Pathology, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia;
| | - Željka Večerić-Haler
- Department of Nephrology, University Medical Centre, 1000 Ljubljana, Slovenia;
- Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Nika Kojc
- Institute of Pathology, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia;
- Correspondence: ; Tel.: +386-154-371-25
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11
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Cassia MA, Casazza R, Napodano P, Cozzolino M. COVID-19 Infection and Acute Kidney Injury: Cause or Complication? Blood Purif 2021; 51:288-291. [PMID: 34107484 PMCID: PMC8339047 DOI: 10.1159/000516336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/30/2021] [Indexed: 01/08/2023]
Abstract
Management of COVID-19 infection is the trend topic in the scientific community and case identification is a key step to contain the pandemic. While pneumonia and acute respiratory distress syndrome represent the typical severe manifestations of the disease, atypical presentations pose significant diagnostic and therapeutic challenges for physicians, especially when diagnostic tests are repeatedly negative. Clinical picture of COVID-19 patients is often complicated by bacterial infections or thrombotic events. Here, we present and discuss a case report identified in our center as example of a challenging diagnosis and 2 uncommon complications: severe hyponatremia and acute kidney injury requiring renal replacement therapy, caused by parenchymal damage and with a possible direct involvement of the virus.
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Affiliation(s)
- Matthias Arnaldo Cassia
- San Carlo Borromeo Hospital, ASST Santi Paolo e Carlo, Milan, Italy.,Department of Health Sciences, University of Milan, Milan, Italy
| | - Roberta Casazza
- San Carlo Borromeo Hospital, ASST Santi Paolo e Carlo, Milan, Italy.,Department of Health Sciences, University of Milan, Milan, Italy
| | - Pietro Napodano
- San Carlo Borromeo Hospital, ASST Santi Paolo e Carlo, Milan, Italy
| | - Mario Cozzolino
- San Carlo Borromeo Hospital, ASST Santi Paolo e Carlo, Milan, Italy.,Department of Health Sciences, University of Milan, Milan, Italy
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12
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Abstract
High-density lipoprotein (HDL) particles, best known for their anti-atherosclerotic effects, also may play a beneficial role during acute renal stress. HDL from healthy human beings also shows anti-inflammatory and anti-oxidant capacities, promotes endothelial function and repair, and serves as a systemic signaling mechanism facilitating rapid interorgan communication during times of physiologic stress. Higher concentrations of HDL are associated with less acute kidney injury after sepsis, cardiac and vascular surgery, and contrast-exposure during percutaneous coronary interventions. A better understanding of the interplay between HDL and the kidney both under homeostatic conditions and under acute physiologic stress could lead to the identification of novel risk factors and therapeutic targets for acute kidney injury prevention and treatment in the future.
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Affiliation(s)
- Loren E Smith
- Division of Multispecialty Adult Anesthesiology, Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN.
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Vázquez-Carballo C, Guerrero-Hue M, García-Caballero C, Rayego-Mateos S, Opazo-Ríos L, Morgado-Pascual JL, Herencia-Bellido C, Vallejo-Mudarra M, Cortegano I, Gaspar ML, de Andrés B, Egido J, Moreno JA. Toll-Like Receptors in Acute Kidney Injury. Int J Mol Sci 2021; 22:ijms22020816. [PMID: 33467524 PMCID: PMC7830297 DOI: 10.3390/ijms22020816] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/09/2021] [Accepted: 01/11/2021] [Indexed: 12/16/2022] Open
Abstract
Acute kidney injury (AKI) is an important health problem, affecting 13.3 million individuals/year. It is associated with increased mortality, mainly in low- and middle-income countries, where renal replacement therapy is limited. Moreover, survivors show adverse long-term outcomes, including increased risk of developing recurrent AKI bouts, cardiovascular events, and chronic kidney disease. However, there are no specific treatments to decrease the adverse consequences of AKI. Epidemiological and preclinical studies show the pathological role of inflammation in AKI, not only at the acute phase but also in the progression to chronic kidney disease. Toll-like receptors (TLRs) are key regulators of the inflammatory response and have been associated to many cellular processes activated during AKI. For that reason, a number of anti-inflammatory agents targeting TLRs have been analyzed in preclinical studies to decrease renal damage during AKI. In this review, we updated recent knowledge about the role of TLRs, mainly TLR4, in the initiation and development of AKI as well as novel compounds targeting these molecules to diminish kidney injury associated to this pathological condition.
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Affiliation(s)
- Cristina Vázquez-Carballo
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, 28040 Madrid, Spain; (C.V.-C.); (S.R.-M.); (L.O.-R.); (C.H.-B.)
| | - Melania Guerrero-Hue
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, 14004 Córdoba, Spain; (M.G.-H.); (C.G.-C.); (J.L.M.-P.); (M.V.-M.)
| | - Cristina García-Caballero
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, 14004 Córdoba, Spain; (M.G.-H.); (C.G.-C.); (J.L.M.-P.); (M.V.-M.)
| | - Sandra Rayego-Mateos
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, 28040 Madrid, Spain; (C.V.-C.); (S.R.-M.); (L.O.-R.); (C.H.-B.)
| | - Lucas Opazo-Ríos
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, 28040 Madrid, Spain; (C.V.-C.); (S.R.-M.); (L.O.-R.); (C.H.-B.)
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), 28040 Madrid, Spain
| | - José Luis Morgado-Pascual
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, 14004 Córdoba, Spain; (M.G.-H.); (C.G.-C.); (J.L.M.-P.); (M.V.-M.)
| | - Carmen Herencia-Bellido
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, 28040 Madrid, Spain; (C.V.-C.); (S.R.-M.); (L.O.-R.); (C.H.-B.)
| | - Mercedes Vallejo-Mudarra
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, 14004 Córdoba, Spain; (M.G.-H.); (C.G.-C.); (J.L.M.-P.); (M.V.-M.)
| | - Isabel Cortegano
- Immunobiology Department, Carlos III Health Institute, 28220 Majadahonda (Madrid), Spain; (I.C.); (M.L.G.); (B.d.A.)
| | - María Luisa Gaspar
- Immunobiology Department, Carlos III Health Institute, 28220 Majadahonda (Madrid), Spain; (I.C.); (M.L.G.); (B.d.A.)
| | - Belén de Andrés
- Immunobiology Department, Carlos III Health Institute, 28220 Majadahonda (Madrid), Spain; (I.C.); (M.L.G.); (B.d.A.)
| | - Jesús Egido
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, 28040 Madrid, Spain; (C.V.-C.); (S.R.-M.); (L.O.-R.); (C.H.-B.)
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), 28040 Madrid, Spain
- Correspondence: (J.E.); (J.A.M.); Tel.: +34-915504800 (J.E.); +34-957-218039 (J.A.M.)
| | - Juan Antonio Moreno
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, 14004 Córdoba, Spain; (M.G.-H.); (C.G.-C.); (J.L.M.-P.); (M.V.-M.)
- Biomedical Research Networking Center on Cardiovascular Diseases (CIBERCV), 28029 Madrid, Spain
- Department of Cell Biology, Physiology and Immunology, University of Cordoba, 140471 Cordoba, Spain
- Correspondence: (J.E.); (J.A.M.); Tel.: +34-915504800 (J.E.); +34-957-218039 (J.A.M.)
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Song SJ, Kim SM, Lee SH, Moon JY, Hwang HS, Kim JS, Park SH, Jeong KH, Kim YG. Rhabdomyolysis-Induced AKI Was Ameliorated in NLRP3 KO Mice via Alleviation of Mitochondrial Lipid Peroxidation in Renal Tubular Cells. Int J Mol Sci 2020; 21:ijms21228564. [PMID: 33202867 PMCID: PMC7696646 DOI: 10.3390/ijms21228564] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 12/13/2022] Open
Abstract
Introduction: A recent study showed that early renal tubular injury is ameliorated in Nod-like receptor pyrin domain-containing protein 3 (NLRP3) KO mice with rhabdomyolysis-induced acute kidney injury (RIAKI). However, the precise mechanism has not been determined. Therefore, we investigated the role of NLRP3 in renal tubular cells in RIAKI. Methods: Glycerol-mediated RIAKI was induced in NLRP3 KO and wild-type (WT) mice. The mice were euthanized 24 h after glycerol injection, and both kidneys and plasma were collected. HKC-8 cells were treated with ferrous myoglobin to mimic a rhabdomyolytic environment. Results: Glycerol injection led to increase serum creatinine, aspartate aminotransferase (AST), and renal kidney injury molecule-1 (KIM-1) level; renal tubular necrosis; and apoptosis. Renal injury was attenuated in NLRP3 KO mice, while muscle damage and renal neutrophil recruitment did not differ between NLRP3 KO mice and WT mice. Following glycerin injection, increases in cleaved caspase-3, poly (ADP-ribose) polymerase (PARP), and a decrease in the glutathione peroxidase 4 (GPX-4) level were observed in the kidneys of mice with RIAKI, and these changes were alleviated in the kidneys of NLRP3 KO mice. NLRP3 was upregulated, and cell viability was suppressed in HKC-8 cells treated with ferrous myoglobin. Myoglobin-induced apoptosis and lipid peroxidation were significantly decreased in siNLRP3-treated HKC-8 cells compared to ferrous myoglobin-treated HKC-8 cells. Myoglobin reduced the mitochondrial membrane potential and increased mitochondrial fission and reactive oxygen species (ROS) and lipid peroxidation levels, which were restored to normal levels in NLRP3-depleted HKC-8 cells. Conclusions: NLRP3 depletion ameliorated renal tubular injury in a murine glycerol-induced acute kidney injury (AKI) model. A lack of NLRP3 improved tubular cell viability via attenuation of myoglobin-induced mitochondrial injury and lipid peroxidation, which might be the critical factor in protecting the kidney.
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15
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Weng X, Zhao H, Guan Q, Shi G, Feng S, Gleave ME, Nguan CC, Du C. Clusterin regulates macrophage expansion, polarization and phagocytic activity in response to inflammation in the kidneys. Immunol Cell Biol 2020; 99:274-287. [PMID: 32935392 PMCID: PMC7984284 DOI: 10.1111/imcb.12405] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/22/2020] [Accepted: 09/13/2020] [Indexed: 12/26/2022]
Abstract
Clusterin (CLU) is a multifunctional protein localized extracellularly and intracellularly. Although CLU-knockout (KO) mice are more susceptible to renal ischemia-reperfusion injury (IRI), the mechanisms underlying the actions of CLU in IRI are not fully understood. Macrophages are key regulators of IRI severity and tissue repair. Therefore, we investigated the role of CLU in macrophage polarization and phagocytosis. Renal IRI was induced in wild-type (WT) or CLU-KO C57BL/6 mice by clamping the renal pedicles for 30 min at 32°C. Peritoneal macrophages were activated via an intraperitoneal injection of lipopolysaccharide (LPS). Renal tissue damage was examined using histology, whereas leukocyte phenotypes were assessed using flow cytometry and immunohistochemistry. We found that monocytes/macrophages expressed the CLU protein that was upregulated by hypoxia. The percentages of macrophages (F4/80+ , CD11b+ or MAC3+ ) infiltrating the kidneys of WT mice were significantly less than those in CLU-KO mice after IRI. The M1/M2 phenotype ratio of the macrophages in WT kidneys decreased at day 7 post-IRI when the injury was repaired, whereas that in KO kidneys increased consistently as tissue injury persisted. In response to LPS stimulation, WT mice produced fewer M1 macrophages, but not M2, than the control did. Phagocytosis was stimulated by CLU expression in macrophages compared with the CLU null controls and by the exogenous CLU protein. In conclusion, CLU suppresses macrophage infiltration and proinflammatory M1 polarization during the recovery period following IRI, and enhances phagocytic activity, which may be partly responsible for tissue repair in the kidneys of WT mice after injury.
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Affiliation(s)
- Xiaodong Weng
- Department of Urologic Sciences, The University of British Columbia, Vancouver, BC, V5Z 1M9, Canada.,Department of Urology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, China
| | - Haimei Zhao
- Department of Urologic Sciences, The University of British Columbia, Vancouver, BC, V5Z 1M9, Canada.,College of Traditional Chinese Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi Province, 330004, China
| | - Qiunong Guan
- Department of Urologic Sciences, The University of British Columbia, Vancouver, BC, V5Z 1M9, Canada
| | - Ganggang Shi
- Department of Urologic Sciences, The University of British Columbia, Vancouver, BC, V5Z 1M9, Canada.,Department of Colorectal Surgery, The Second Hospital of Tianjin Medical University, Tianjin, 300211, China
| | - Shijian Feng
- Department of Urologic Sciences, The University of British Columbia, Vancouver, BC, V5Z 1M9, Canada
| | - Martin E Gleave
- Department of Urologic Sciences, The University of British Columbia, Vancouver, BC, V5Z 1M9, Canada
| | - Christopher Cy Nguan
- Department of Urologic Sciences, The University of British Columbia, Vancouver, BC, V5Z 1M9, Canada
| | - Caigan Du
- Department of Urologic Sciences, The University of British Columbia, Vancouver, BC, V5Z 1M9, Canada
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Park M, Kwon CH, Ha HK, Han M, Song SH. RNA-Seq identifies condition-specific biological signatures of ischemia-reperfusion injury in the human kidney. BMC Nephrol 2020; 21:398. [PMID: 32977749 PMCID: PMC7517631 DOI: 10.1186/s12882-020-02025-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 08/17/2020] [Indexed: 12/13/2022] Open
Abstract
Background Acute kidney injury (AKI) is defined as a sudden event of kidney failure or kidney damage within a short period. Ischemia-reperfusion injury (IRI) is a critical factor associated with severe AKI and end-stage kidney disease (ESKD). However, the biological mechanisms underlying ischemia and reperfusion are incompletely understood, owing to the complexity of these pathophysiological processes. We aimed to investigate the key biological pathways individually affected by ischemia and reperfusion at the transcriptome level. Results We analyzed the steady-state gene expression pattern of human kidney tissues from normal (pre-ischemia), ischemia, and reperfusion conditions using RNA-sequencing. Conventional differential expression and self-organizing map (SOM) clustering analyses followed by pathway analysis were performed. Differential expression analysis revealed the metabolic pathways dysregulated in ischemia. Cellular assembly, development and migration, and immune response-related pathways were dysregulated in reperfusion. SOM clustering analysis highlighted the ischemia-mediated significant dysregulation in metabolism, apoptosis, and fibrosis-related pathways, while cell growth, migration, and immune response-related pathways were highly dysregulated by reperfusion after ischemia. The expression of pro-apoptotic genes and death receptors was downregulated during ischemia, indicating the existence of a protective mechanism against ischemic injury. Reperfusion induced alterations in the expression of the genes associated with immune response such as inflammasome and antigen representing genes. Further, the genes related to cell growth and migration, such as AKT, KRAS, and those related to Rho signaling, were downregulated, suggestive of injury responses during reperfusion. Semaphorin 4D and plexin B1 levels were also downregulated. Conclusions We show that specific biological pathways were distinctively involved in ischemia and reperfusion during IRI, indicating that condition-specific therapeutic strategies may be imperative to prevent severe kidney damage after IRI in the clinical setting.
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Affiliation(s)
- Meeyoung Park
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Chae Hwa Kwon
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Hong Koo Ha
- Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Miyeun Han
- Department of Urology, Pusan National University Hospital, Busan, South Korea
| | - Sang Heon Song
- Department of Internal Medicine and Biomedical Research Institute, Pusan National University Hospital, Busan, South Korea.
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Leppkes M, Schick M, Hohberger B, Mahajan A, Knopf J, Schett G, Muñoz LE, Herrmann M. Updates on NET formation in health and disease. Semin Arthritis Rheum 2020; 49:S43-S48. [PMID: 31779852 DOI: 10.1016/j.semarthrit.2019.09.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 09/25/2019] [Indexed: 12/30/2022]
Abstract
Following a recent presentation at ATT Mallorca in May 2019, this paper gives insight into the current research of neutrophil extracellular traps (NETs) and their role in conditions of health and disease. Though NETs reportedly support disease progression and play a role in the development of autoimmune diseases, we argue that NETs are mandatory for the mammalian immune system. They are especially important to patrol and surveil outer and inner body surfaces and are capable to perform major anti-microbial activities. Neutrophils are the first cells to be recruited to wounds, where they form NETs and aggregated NETs (aggNETs). The latter close the wounds and are ever-present in skinfolds, where the integrity of the skin is impaired. On infected ocular surfaces NETs form an antimicrobial barrier, which prevents bacterial dissemination into the brain. In the oral cavity, NETs display anti-bacterial properties. Although NETs on internal body surfaces like ducts and vessels offer superficial surveillance, exaggerated aggNET formation may directly block vessels and ducts and thus cause thrombi and ductal occlusion, respectively. In the case of biliopancreatic ducts, clogging by aggNETs may even cause acute pancreatitis. Insufficient clearance of apoptotic remnants and NETs can lead to autoimmune diseases or unwanted, chronic inflammation. To prevent this, macrophages cloak dead cells, while apoptotic cells are cleared. We conclude that neutrophils, NETs and aggNETs can be considered double edged swords that orchestrate the innate immune response but carry the risk to precipitate autoimmunity and epithelial damage.
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Affiliation(s)
- Moritz Leppkes
- Friedrich Alexander University Erlangen-Nürnberg (FAU), Department of Internal Medicine 1 - Gastroenterology, Pneumology and Endocrinology, Universitätsklinikum Erlangen, 91054 Erlangen, Germany
| | - Maximilian Schick
- Friedrich Alexander University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, 90154 Erlangen, Germany
| | - Bettina Hohberger
- Friedrich Alexander University Erlangen-Nürnberg (FAU), Department of Ophtalmology, Universitätsklinikum Erlangen, 90154 Erlangen, Germany
| | - Aparna Mahajan
- Friedrich Alexander University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, 90154 Erlangen, Germany
| | - Jasmin Knopf
- Friedrich Alexander University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, 90154 Erlangen, Germany
| | - Georg Schett
- Friedrich Alexander University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, 90154 Erlangen, Germany
| | - Luis E Muñoz
- Friedrich Alexander University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, 90154 Erlangen, Germany.
| | - Martin Herrmann
- Friedrich Alexander University Erlangen-Nürnberg (FAU), Department of Internal Medicine 3 - Rheumatology and Immunology, Universitätsklinikum Erlangen, 90154 Erlangen, Germany
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18
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Sen P, Helmke A, Liao CM, Sörensen-Zender I, Rong S, Bräsen JH, Melk A, Haller H, von Vietinghoff S, Schmitt R. SerpinB2 Regulates Immune Response in Kidney Injury and Aging. J Am Soc Nephrol 2020; 31:983-995. [PMID: 32209589 DOI: 10.1681/asn.2019101085] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 02/09/2020] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Expression of SerpinB2, a regulator of inflammatory processes, has been described in the context of macrophage activation and cellular senescence. Given that mechanisms for these processes interact and can shape kidney disease, it seems plausible that SerpinB2 might play a role in renal aging, injury, and repair. METHODS We subjected SerpinB2 knockout mice to ischemia-reperfusion injury or unilateral ureteral obstruction. We performed phagocyte depletion to study SerpinB2's role beyond the effects of macrophages and transplanted bone marrow from knockout mice to wild-type mice and vice versa to dissect cell type-dependent effects. Primary tubular cells and macrophages from SerpinB2 knockout and wild-type mice were used for functional studies and transcriptional profiling. RESULTS Cultured senescent tubular cells, kidneys of aged mice, and renal stress models exhibited upregulation of SerpinB2 expression. Functionally, lack of SerpinB2 in aged knockout mice had no effect on the magnitude of senescence markers but associated with enhanced kidney damage and fibrosis. In stress models, inflammatory cell infiltration was initially lower in knockout mice but later increased, leading to an accumulation of significantly more macrophages. SerpinB2 knockout tubular cells showed significantly reduced expression of the chemokine CCL2. Macrophages from knockout mice exhibited reduced phagocytosis and enhanced migration. Macrophage depletion and bone marrow transplantation experiments validated the functional relevance of these cell type-specific functions of SerpinB2. CONCLUSIONS SerpinB2 influences tubule-macrophage crosstalk by supporting tubular CCL2 expression and regulating macrophage phagocytosis and migration. In mice, SerpinB2 expression seems to be needed for coordination and timely resolution of inflammation, successful repair, and kidney homeostasis during aging. Implications of SerpinB2 in human kidney disease deserve further exploration.
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Affiliation(s)
- Payel Sen
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | - Alexandra Helmke
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | - Chieh Ming Liao
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | - Inga Sörensen-Zender
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | - Song Rong
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | | | - Anette Melk
- Department of Pediatric Nephrology and Gastroenterology, Medical School Hannover, Hannover, Germany
| | - Hermann Haller
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | | | - Roland Schmitt
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
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Plasma Concentrations of Extracellular DNA in Acute Kidney Injury. Diagnostics (Basel) 2020; 10:diagnostics10030152. [PMID: 32168933 PMCID: PMC7151483 DOI: 10.3390/diagnostics10030152] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/02/2020] [Accepted: 03/09/2020] [Indexed: 12/18/2022] Open
Abstract
Current diagnostic methods of acute kidney injury (AKI) have limited sensitivity and specificity. Tissue injury has been linked to an increase in the concentrations of extracellular DNA (ecDNA) in plasma. A rapid turnover of ecDNA in the circulation makes it a potential marker with high sensitivity. This study aimed to analyze the concentration of ecDNA in plasma in animal models of AKI. Three different fractions of ecDNA were measured—total ecDNA was assessed fluorometrically, while nuclear ecDNA (ncDNA) and mitochondrial DNA (mtDNA) were analyzed using quantitative real-time PCR. AKI was induced using four different murine models of AKI-bilateral ureteral obstruction (BUO), glycerol-induced AKI (GLY), ischemia–reperfusion injury (IRI) and bilateral nephrectomy (BNx). Total ecDNA was significantly higher in BUO (p < 0.05) and GLY (p < 0.05) compared to the respective control groups. ncDNA was significantly higher in BUO (p < 0.05) compared to SHAM. No significant differences in the concentrations of mtDNA were found between the groups. The plasma concentrations of different fractions of ecDNA are dependent on the mechanism of induction of AKI and warrant further investigation as potential surrogate markers of AKI.
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Dass B, Beaver TM, Shimada M, Alquadan KF, Koratala A, Singhania G, Singh A, Ejaz AA. Natriuretic peptides in acute kidney injury - A sojourn on parallel tracks? Eur J Intern Med 2020; 71:39-44. [PMID: 31812538 DOI: 10.1016/j.ejim.2019.11.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 11/15/2019] [Accepted: 11/30/2019] [Indexed: 11/20/2022]
Abstract
OBJECTIVE The focus of this review was to elicit the mechanistic logic of the experimental and clinical study designs of natriuretic peptides (NP) in acute kidney injury (AKI) and to understand their respective outcomes. METHODS Online search of PubMed and manual review of articles. Randomized trials, observational and physiologic studies of NPs and AKI were extracted. Rationale, design and study outcomes were analyzed. RESULTS In experimental models of AKI, infusion of NP prevented post-ischemic fall in renal blood flow (RBF) or improvement in RBF, GFR, diuresis and natriuresis and demonstrated anti-inflammatory properties. NPs were most effective in the early stages of AKI, also in established phase of AKI but their effectiveness were limited to the time of infusion. Hypotension was a major side-effect. Based on these observations, preliminary clinical studies were performed which demonstrated improved urine output, RBF and GFR and reduced need for dialysis. However, randomized, controlled trials failed to demonstrate improvement in dialysis-free survival in different cohorts and study designs. Although NPs reduced the incidence of AKI in the postoperative period in cardiac surgery, it was not associated with improved long-term survival. In contrast to randomized trials, meta-analysis reported favorable results. CONCLUSIONS Reasons for the divergence of experimental and clinical outcomes of NPs in AKI are discussed in this review article.
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Affiliation(s)
- Bhagwan Dass
- Division of Nephrology, Hypertension and Transplantation, University of Florida, P.O. Box 100224, Gainesville, FL 32610, USA
| | - Thomas M Beaver
- Division of Cardiovascular Surgery, University of Florida, Gainesville, USA
| | - Michiko Shimada
- Division of Nephrology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Kawther F Alquadan
- Division of Nephrology, Hypertension and Transplantation, University of Florida, P.O. Box 100224, Gainesville, FL 32610, USA
| | - Abhilash Koratala
- Division of Nephrology, Hypertension and Transplantation, University of Florida, P.O. Box 100224, Gainesville, FL 32610, USA
| | - Girish Singhania
- Division of Nephrology, Hypertension and Transplantation, University of Florida, P.O. Box 100224, Gainesville, FL 32610, USA
| | - Amardeep Singh
- Division of Nephrology, Hypertension and Transplantation, University of Florida, P.O. Box 100224, Gainesville, FL 32610, USA
| | - A Ahsan Ejaz
- Division of Nephrology, Hypertension and Transplantation, University of Florida, P.O. Box 100224, Gainesville, FL 32610, USA.
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