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Jercălău CE, Andrei CL, Brezeanu LN, Darabont RO, Guberna S, Catană A, Lungu MD, Ceban O, Sinescu CJ. Lymphocyte-to-Red Blood Cell Ratio-The Guide Star of Acute Coronary Syndrome Prognosis. Healthcare (Basel) 2024; 12:1205. [PMID: 38921319 PMCID: PMC11203887 DOI: 10.3390/healthcare12121205] [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: 04/29/2024] [Revised: 06/09/2024] [Accepted: 06/12/2024] [Indexed: 06/27/2024] Open
Abstract
BACKGROUND Beneath the surface of the acute ST-elevation myocardial infarction (STEMI) iceberg lies a hidden peril, obscured by the well-known cardiovascular risk factors that tip the iceberg. Before delving into the potential time bomb these risk factors represent, it is crucial to recognize the obscured danger lurking under the surface. What secrets does the STEMI iceberg hold? To unveil these mysteries, a closer look at the pathophysiology of STEMI is imperative. Inflammation, the catalyst of the STEMI cascade, sets off a chain reaction within the cardiovascular system. Surprisingly, the intricate interplay between red blood cells (RBC) and lymphocytes remains largely unexplored in previous research. MATERIALS AND METHODS The study encompassed 163 patients diagnosed with STEMI. Utilizing linear and logistic regression, the lymphocyte-to-red blood cell ratio (LRR) was scrutinized as a potential predictive biomarker. RESULTS There was a statistically significant correlation between LRR and the prognosis of STEMI patients. Building upon this discovery, an innovative scoring system was proposed that integrates LRR as a crucial parameter. CONCLUSIONS Uncovering novel predictive markers for both immediate and delayed complications in STEMI is paramount. These markers have the potential to revolutionize treatment strategies by tailoring them to individual risk profiles, ultimately enhancing patient outcomes.
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Affiliation(s)
- Cosmina Elena Jercălău
- Department of Cardiology, “Bagdasar Arseni” Emergency Hospital, University of Medicine and Pharmacy “Carol Davila”, 011241 Bucharest, Romania; (R.O.D.); (A.C.); (C.J.S.)
| | - Cătălina Liliana Andrei
- Department of Cardiology, “Bagdasar Arseni” Emergency Hospital, University of Medicine and Pharmacy “Carol Davila”, 011241 Bucharest, Romania; (R.O.D.); (A.C.); (C.J.S.)
| | - Lavinia Nicoleta Brezeanu
- Department of Anaesthesia and Intensive Care, Fundeni Clinical Institute, 022328 Bucharest, Romania;
| | - Roxana Oana Darabont
- Department of Cardiology, “Bagdasar Arseni” Emergency Hospital, University of Medicine and Pharmacy “Carol Davila”, 011241 Bucharest, Romania; (R.O.D.); (A.C.); (C.J.S.)
| | - Suzana Guberna
- Department of Cardiology, Emergency Hospital “Bagdasar-Arseni”, 050474 Bucharest, Romania; (S.G.); (M.D.L.)
| | - Andreea Catană
- Department of Cardiology, “Bagdasar Arseni” Emergency Hospital, University of Medicine and Pharmacy “Carol Davila”, 011241 Bucharest, Romania; (R.O.D.); (A.C.); (C.J.S.)
| | - Maria Diana Lungu
- Department of Cardiology, Emergency Hospital “Bagdasar-Arseni”, 050474 Bucharest, Romania; (S.G.); (M.D.L.)
| | - Octavian Ceban
- Economic Cybernetics and Informatics Department, The Bucharest University of Economic Studies, 010374 Bucharest, Romania;
| | - Crina Julieta Sinescu
- Department of Cardiology, “Bagdasar Arseni” Emergency Hospital, University of Medicine and Pharmacy “Carol Davila”, 011241 Bucharest, Romania; (R.O.D.); (A.C.); (C.J.S.)
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2
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Islamuddin M, Qin X. Renal macrophages and NLRP3 inflammasomes in kidney diseases and therapeutics. Cell Death Discov 2024; 10:229. [PMID: 38740765 DOI: 10.1038/s41420-024-01996-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 04/22/2024] [Accepted: 04/26/2024] [Indexed: 05/16/2024] Open
Abstract
Macrophages are exceptionally diversified cell types and perform unique features and functions when exposed to different stimuli within the specific microenvironment of various kidney diseases. In instances of kidney tissue necrosis or infection, specific patterns associated with damage or pathogens prompt the development of pro-inflammatory macrophages (M1). These M1 macrophages contribute to exacerbating tissue damage, inflammation, and eventual fibrosis. Conversely, anti-inflammatory macrophages (M2) arise in the same circumstances, contributing to kidney repair and regeneration processes. Impaired tissue repair causes fibrosis, and hence macrophages play a protective and pathogenic role. In response to harmful stimuli within the body, inflammasomes, complex assemblies of multiple proteins, assume a pivotal function in innate immunity. The initiation of inflammasomes triggers the activation of caspase 1, which in turn facilitates the maturation of cytokines, inflammation, and cell death. Macrophages in the kidneys possess the complete elements of the NLRP3 inflammasome, including NLRP3, ASC, and pro-caspase-1. When the NLRP3 inflammasomes are activated, it triggers the activation of caspase-1, resulting in the release of mature proinflammatory cytokines (IL)-1β and IL-18 and cleavage of Gasdermin D (GSDMD). This activation process therefore then induces pyroptosis, leading to renal inflammation, cell death, and renal dysfunction. The NLRP3-ASC-caspase-1-IL-1β-IL-18 pathway has been identified as a factor in the development of the pathophysiology of numerous kidney diseases. In this review, we explore current progress in understanding macrophage behavior concerning inflammation, injury, and fibrosis in kidneys. Emphasizing the pivotal role of activated macrophages in both the advancement and recovery phases of renal diseases, the article delves into potential strategies to modify macrophage functionality and it also discusses emerging approaches to selectively target NLRP3 inflammasomes and their signaling components within the kidney, aiming to facilitate the healing process in kidney diseases.
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Affiliation(s)
- Mohammad Islamuddin
- Division of Comparative Pathology, Tulane National Primate Research Center, Tulane University School of Medicine, Tulane University, 18703 Three Rivers Road, Covington, LA, 70433, USA.
- Department of Microbiology and Immunology, School of Medicine, Tulane University, New Orleans, LA, 70112, USA.
| | - Xuebin Qin
- Division of Comparative Pathology, Tulane National Primate Research Center, Tulane University School of Medicine, Tulane University, 18703 Three Rivers Road, Covington, LA, 70433, USA.
- Department of Microbiology and Immunology, School of Medicine, Tulane University, New Orleans, LA, 70112, USA.
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Zhu Y, Tan J, Wang Y, Gong Y, Zhang X, Yuan Z, Lu X, Tang H, Zhang Z, Jiang X, Zhu W, Gong L. Atg5 deficiency in macrophages protects against kidney fibrosis via the CCR6-CCL20 axis. Cell Commun Signal 2024; 22:223. [PMID: 38594728 PMCID: PMC11003172 DOI: 10.1186/s12964-024-01600-2] [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: 01/12/2024] [Accepted: 03/28/2024] [Indexed: 04/11/2024] Open
Abstract
BACKGROUND Autophagy is a lysosome-dependent degradation pathway that regulates macrophage activation, differentiation, and polarization. Autophagy related 5 (Atg5) is a key protein involved in phagocytic membrane elongation in autophagic vesicles that forms a complex with Atg12 and Atg16L1. Alterations in Atg5 are related to both acute and chronic kidney diseases in experimental models. However, the role of macrophage-expressed Atg5 in acute kidney injury remains unclear. METHODS Using a myeloid cell-specific Atg5 knockout (MΦ atg5-/-) mouse, we established renal ischemia/reperfusion and unilateral ureteral obstruction models to evaluate the role of macrophage Atg5 in renal macrophage migration and fibrosis. RESULTS Based on changes in the serum urea nitrogen and creatinine levels, Atg5 deletion had a minimal effect on renal function in the early stages after mild injury; however, MΦ atg5-/- mice had reduced renal fibrosis and reduced macrophage recruitment after 4 weeks of ischemia/reperfusion injury and 2 weeks of unilateral ureteral obstruction injury. Atg5 deficiency impaired the CCL20-CCR6 axis after severe ischemic kidneys. Chemotactic responses of bone marrow-derived monocytes (BMDMs) from MΦ atg5-/- mice to CCL20 were significantly attenuated compared with those of wild-type BMDMs, and this might be caused by the inhibition of PI3K, AKT, and ERK1/2 activation. CONCLUSIONS Our data indicate that Atg5 deficiency decreased macrophage migration by impairing the CCL20-CCR6 axis and inhibited M2 polarization, thereby improving kidney fibrosis.
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Affiliation(s)
- Yufeng Zhu
- Experimental Animal Center, Nanfang Hospital, Southern Medical University, No. 1838, North Guangzhou Avenue, Baiyun District, Guangzhou, 510515, China
| | - Jiexing Tan
- Experimental Animal Center, Nanfang Hospital, Southern Medical University, No. 1838, North Guangzhou Avenue, Baiyun District, Guangzhou, 510515, China
| | - Yuanzhan Wang
- Experimental Animal Center, Nanfang Hospital, Southern Medical University, No. 1838, North Guangzhou Avenue, Baiyun District, Guangzhou, 510515, China
| | - Yuhong Gong
- Experimental Animal Center, Nanfang Hospital, Southern Medical University, No. 1838, North Guangzhou Avenue, Baiyun District, Guangzhou, 510515, China
| | - Xiaoyong Zhang
- State Key Laboratory of Organ Failure Research, Guangdong Provincial Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ziguo Yuan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xinyu Lu
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Huifang Tang
- Department of Pharmacology, School of Basic Medical Sciences, Zhejiang University, Hangzhou, China
| | - Zhiming Zhang
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaotao Jiang
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Proteomics, Guangzhou, China
| | - Wei Zhu
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Li Gong
- Experimental Animal Center, Nanfang Hospital, Southern Medical University, No. 1838, North Guangzhou Avenue, Baiyun District, Guangzhou, 510515, China.
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Mizokami T, Shimada M, Suzuki K. Neutrophil depletion attenuates acute renal injury after exhaustive exercise in mice. Exp Physiol 2024; 109:588-599. [PMID: 38241017 PMCID: PMC10988657 DOI: 10.1113/ep091362] [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: 06/19/2023] [Accepted: 01/08/2024] [Indexed: 04/04/2024]
Abstract
Prolonged intense exercise induces acute renal injury; however, the precise mechanism remains unclear. We investigated the effects of neutrophil depletion in male C57BL/6J mice. Male C57BL/6J mice were divided into four groups: sedentary with control antibody; sedentary with antineutrophil antibody; exhaustive exercise with control antibody; and exhaustive exercise with antineutrophil antibody. Antineutrophil (1A8) or control antibody was administered i.p. to the mice before they ran on a treadmill. Plasma levels of creatinine and blood urea nitrogen (BUN) were measured. Renal histology was assessed 24 h after exhaustive exercise, and the concentration of kidney injury molecule (KIM)-1 was measured using an enzyme-linked immunosorbent assay. The expression levels of inflammatory cytokines were measured using qRT-PCR. Furthermore, NADPH oxidase activity and the hydrogen peroxide concentration in the kidney were measured. Immediately after exhaustive exercise, plasma BUN was significantly increased, but creatinine was not. The increase in BUN after exercise was suppressed by 1A8 treatment. The pathological changes manifested as congested and swollen glomeruli and nuclear infiltration after exhaustive exercise. These changes were suppressed by treatment with the 1A8 antibodies. The KIM-1 concentration increased after exhaustive exercise but was reduced by the 1A8 antibodies. Treatment with the 1A8 antibody also decreased exhaustive exercise-induced inflammation and reactive oxygen species levels in the kidney. These results suggest that neutrophils contribute to exercise-induced acute renal injury by regulating inflammation and oxidative stress.
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Affiliation(s)
- Tsubasa Mizokami
- Graduate School of Sport SciencesWaseda UniversityTokorozawaSaitamaJapan
| | - Michiko Shimada
- Community MedicineHirosaki University Graduate School of MedicineHirosakiJapan
| | - Katsuhiko Suzuki
- Faculty of Sport SciencesWaseda UniversityTokorozawaSaitamaJapan
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5
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Maryam B, Smith ME, Miller SJ, Natarajan H, Zimmerman KA. Macrophage Ontogeny, Phenotype, and Function in Ischemia Reperfusion-Induced Injury and Repair. KIDNEY360 2024; 5:459-470. [PMID: 38297436 PMCID: PMC11000738 DOI: 10.34067/kid.0000000000000376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 01/22/2024] [Indexed: 02/02/2024]
Abstract
AKI is characterized by a sudden, and usually reversible, decline in kidney function. In mice, ischemia-reperfusion injury (IRI) is commonly used to model the pathophysiologic features of clinical AKI. Macrophages are a unifying feature of IRI as they regulate both the initial injury response as well as the long-term outcome following resolution of injury. Initially, macrophages in the kidney take on a proinflammatory phenotype characterized by the production of inflammatory cytokines, such as CCL2 (monocyte chemoattractant protein 1), IL-6, IL-1 β , and TNF- α . Release of these proinflammatory cytokines leads to tissue damage. After resolution of the initial injury, macrophages take on a reparative role, aiding in tissue repair and restoration of kidney function. By contrast, failure to resolve the initial injury results in prolonged inflammatory macrophage accumulation and increased kidney damage, fibrosis, and the eventual development of CKD. Despite the extensive amount of literature that has ascribed these functions to M1/M2 macrophages, a recent paradigm shift in the macrophage field now defines macrophages on the basis of their ontological origin, namely monocyte-derived and tissue-resident macrophages. In this review, we focus on macrophage phenotype and function during IRI-induced injury, repair, and transition to CKD using both the classic (M1/M2) and novel (ontological origin) definition of kidney macrophages.
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Affiliation(s)
- Bibi Maryam
- Division of Nephrology, Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
- Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Morgan E. Smith
- Division of Nephrology, Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
- Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Sarah J. Miller
- Division of Nephrology, Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
- Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Hariharasudan Natarajan
- Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Kurt A. Zimmerman
- Division of Nephrology, Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
- Department of Internal Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
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6
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Nørgård MØ, Svenningsen P. Acute Kidney Injury by Ischemia/Reperfusion and Extracellular Vesicles. Int J Mol Sci 2023; 24:15312. [PMID: 37894994 PMCID: PMC10607034 DOI: 10.3390/ijms242015312] [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: 09/26/2023] [Revised: 10/12/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Acute kidney injury (AKI) is often caused by ischemia-reperfusion injury (IRI). IRI significantly affects kidney metabolism, which elicits pro-inflammatory responses and kidney injury. The ischemia/reperfusion of the kidney is associated with transient high mitochondrial-derived reactive oxygen species (ROS) production rates. Excessive mitochondrial-derived ROS damages cellular components and, together with other pathogenic mechanisms, elicits a range of acute injury mechanisms that impair kidney function. Mitochondrial-derived ROS production also stimulates epithelial cell secretion of extracellular vesicles (EVs) containing RNAs, lipids, and proteins, suggesting that EVs are involved in AKI pathogenesis. This literature review focuses on how EV secretion is stimulated during ischemia/reperfusion and how cell-specific EVs and their molecular cargo may modify the IRI process. Moreover, critical pitfalls in the analysis of kidney epithelial-derived EVs are described. In particular, we will focus on how the release of kidney epithelial EVs is affected during tissue analyses and how this may confound data on cell-to-cell signaling. By increasing awareness of methodological pitfalls in renal EV research, the risk of false negatives can be mitigated. This will improve future EV data interpretation regarding EVs contribution to AKI pathogenesis and their potential as biomarkers or treatments for AKI.
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Affiliation(s)
| | - Per Svenningsen
- Department of Molecular Medicine, University of Southern Denmark, DK-5000 Odense, Denmark;
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7
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Baek J, Kim S. Effects of Transfusion of Stored Red Blood Cells on Renal Ischemia-Reperfusion–Induced Hepatic Injury in Rats. Transplant Proc 2023; 55:629-636. [PMID: 37005156 DOI: 10.1016/j.transproceed.2023.02.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 01/26/2023] [Accepted: 02/24/2023] [Indexed: 04/03/2023]
Abstract
BACKGROUND Renal ischemia-reperfusion (IR) injures the liver as well as the kidneys. Transfusion of stored red blood cells (RBCs) triggers inflammatory responses, oxidative stress, and activation of innate immunity. In the present study, we investigated the effect of transfusion of stored RBCs on renal IR-induced hepatic injury. METHODS Sprague-Dawley rats were randomly divided into 3 groups based on the following treatments: rats subjected to sham operation (sham group), rats subjected to the induction of renal IR only (RIR group), and rats transfused with stored RBCs 1 hour after the start of reperfusion (RIR-TF group). Renal ischemia was induced for 1 hour, and reperfusion was allowed for 24 hours. After reperfusion, blood and liver tissue samples were obtained. RESULTS Serum levels of aspartate and alanine aminotransferase were increased in the RIR-TF group compared with those in the RIR and sham groups. The hepatic mRNA expression levels of heme oxygenase-1 and neutrophil gelatinase-associated lipocalin were increased in the RIR-TF group compared with those in the RIR and sham groups. The mRNA expression level of high mobility group box-1 was also increased in the RIR-TF group compared with that in the RIR group. CONCLUSION The transfusion of stored RBCs exacerbates renal IR-induced liver damage. Oxidative stress may be responsible for hepatic injury.
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8
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Rao JS, Pruett TL. Immunology of the transplanted cryopreserved kidney. Cryobiology 2023; 110:1-7. [PMID: 36640932 DOI: 10.1016/j.cryobiol.2023.01.003] [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: 11/10/2022] [Revised: 12/28/2022] [Accepted: 01/10/2023] [Indexed: 01/13/2023]
Abstract
Transplantation has substituted dysfunctional organs with healthy organs from donors to significantly lower morbidity and mortality associated with end-stage organ disease. Since the advent of transplantation, the promise of functional replacement has attracted an exponential mismatch between organ supply and demand. Theoretical proposals to counter the increasing needs have either been to create a source through genetic engineering of porcine donors for xenotransplantation (with more potent immunosuppression protocols) or recreate one's organ in a pig using interspecies blastocyst complementation for exogenic organ transplantation (without immunosuppression). Another promising avenue has been organ banking through cryopreservation for transplantation. Although ice free preservation and acceptable early function following rewarming is critical for success in transplantation, the immunological response that predominantly defines short- and long-term graft survival has failed to captivate attention to date. It is well sorted that thermal and metabolic stress incurred at 4 °C during recovery and reperfusion of organs for clinical transplantation has varying impact on graft survival. Considering the magnitude of cellular imbalance and injury at sub-zero/ultralow temperatures in addition to the chemical toxicity of cryoprotective agents (CPA), it is essential to assess and address the immunological response associated following transplantation to maximize the success of cryopreservation.
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Affiliation(s)
- Joseph Sushil Rao
- Division of Solid Organ Transplantation, Department of Surgery, University of Minnesota, Minneapolis, MN, USA; Schulze Diabetes Institute, Department of Surgery, University of Minnesota, Minneapolis, MN, USA.
| | - Timothy L Pruett
- Division of Solid Organ Transplantation, Department of Surgery, University of Minnesota, Minneapolis, MN, USA.
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9
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Awad AS, Abdel-Rahman EM. Clinical Advances in Kidney Failure: AKI. J Clin Med 2023; 12:jcm12051873. [PMID: 36902660 PMCID: PMC10003997 DOI: 10.3390/jcm12051873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 02/15/2023] [Indexed: 03/02/2023] Open
Abstract
Kidney failure poses an enormous burden on patients, caregivers, healthcare providers, and society as a whole [...].
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Affiliation(s)
- Alaa S. Awad
- Division of Nephrology, University of Florida, Jacksonville, FL 32209, USA
- Correspondence:
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10
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Juncos LA, Wieruszewski PM, Kashani K. Pathophysiology of Acute Kidney Injury in Critical Illness: A Narrative Review. Compr Physiol 2022; 12:3767-3780. [PMID: 36073750 DOI: 10.1002/cphy.c210028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Acute kidney injury (AKI) is a syndrome that entails a rapid decline in kidney function with or without injury. The consequences of AKI among acutely ill patients are dire and lead to higher mortality, morbidity, and healthcare cost. To prevent AKI and its short and long-term repercussions, understanding its pathophysiology is essential. Depending on the baseline kidney histology and function reserves, the number of kidney insults, and the intensity of each insult, the clinical presentation of AKI may differ. While many factors are capable of inducing renal injury, they can be categorized into a few processes. The three primary processes reported in the literature are hemodynamic changes, inflammatory reactions, and nephrotoxicity. The majority of patients with AKI will suffer from more than one during their development and/or progression of AKI. Moreover, the development of one usually leads to the instigation of another. Thus, the interactions and progression between these mechanisms may determine the severity and duration of the AKI. Other factors such as organ crosstalk and how our concurrent therapies interact with these mechanisms complicate the pathophysiology of the progression of the AKI even further. In this narrative review article, we describe these three main pathophysiological processes that lead to the development and progression of AKI. © 2022 American Physiological Society. Compr Physiol 12: 1-14, 2022.
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Affiliation(s)
- Luis A Juncos
- Division of Nephrology, Central Arkansas Veterans' Healthcare System, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Patrick M Wieruszewski
- Division of Hospital Pharmacy, Department of Pharmacy, Mayo Clinic, Rochester, Minnesota, USA
| | - Kianoush Kashani
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA.,Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
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Pak ES, Cha JJ, Cha DR, Kanasaki K, Ha H. Adenosine receptors as emerging therapeutic targets for diabetic kidney disease. Kidney Res Clin Pract 2022; 41:S74-S88. [PMID: 36239063 PMCID: PMC9590297 DOI: 10.23876/j.krcp.22.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/27/2022] [Accepted: 05/05/2022] [Indexed: 08/07/2023] Open
Abstract
Diabetic kidney disease (DKD) is now a pandemic worldwide, and novel therapeutic options are urgently required. Adenosine, an adenosine triphosphate metabolite, plays a role in kidney homeostasis through interacting with four types of adenosine receptors (ARs): A1AR, A2AAR, A2BAR, and A3AR. Increasing evidence highlights the role of adenosine and ARs in the development and progression of DKD: 1) increased adenosine in the plasma and urine of diabetics with kidney injury, 2) increased expression of each of the ARs in diabetic kidneys, 3) the protective effect of coffee, a commonly ingested nonselective AR antagonist, on DKD, and 4) the protective effect of AR modulators in experimental DKD models. We propose AR modulators as a new therapeutic option to treat DKD. Detailed mechanistic studies on the pharmacology of AR modulators will help us to develop effective first-in-class AR modulators against DKD.
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Affiliation(s)
- Eun Seon Pak
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea
| | - Jin Joo Cha
- Department of Nephrology, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Dae Ryong Cha
- Department of Nephrology, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Keizo Kanasaki
- Department of Internal Medical 1, Shimane University Faculty of Medicine, Izumo, Japan
| | - Hunjoo Ha
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, Republic of Korea
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12
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Rosin DL, Hall JP, Zheng S, Huang L, Campos-Bilderback S, Sandoval R, Bree A, Beaumont K, Miller E, Larsen J, Hariri G, Kaila N, Encarnacion IM, Gale JD, van Elsas A, Molitoris BA, Okusa MD. Human Recombinant Alkaline Phosphatase (Ilofotase Alfa) Protects Against Kidney Ischemia-Reperfusion Injury in Mice and Rats Through Adenosine Receptors. Front Med (Lausanne) 2022; 9:931293. [PMID: 35966871 PMCID: PMC9366018 DOI: 10.3389/fmed.2022.931293] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 06/21/2022] [Indexed: 11/26/2022] Open
Abstract
Adenosine triphosphate (ATP) released from injured or dying cells is a potent pro-inflammatory "danger" signal. Alkaline phosphatase (AP), an endogenous enzyme that de-phosphorylates extracellular ATP, likely plays an anti-inflammatory role in immune responses. We hypothesized that ilofotase alfa, a human recombinant AP, protects kidneys from ischemia-reperfusion injury (IRI), a model of acute kidney injury (AKI), by metabolizing extracellular ATP to adenosine, which is known to activate adenosine receptors. Ilofotase alfa (iv) with or without ZM241,385 (sc), a selective adenosine A2A receptor (A2AR) antagonist, was administered 1 h before bilateral IRI in WT, A2AR KO (Adora2a-/- ) or CD73-/- mice. In additional studies recombinant alkaline phosphatase was given after IRI. In an AKI-on-chronic kidney disease (CKD) ischemic rat model, ilofotase alfa was given after the three instances of IRI and rats were followed for 56 days. Ilofotase alfa in a dose dependent manner decreased IRI in WT mice, an effect prevented by ZM241,385 and partially prevented in Adora2a-/- mice. Enzymatically inactive ilofotase alfa was not protective. Ilofotase alfa rescued CD73-/- mice, which lack a 5'-ectonucleotidase that dephosphorylates AMP to adenosine; ZM241,385 inhibited that protection. In both rats and mice ilofotase alfa ameliorated IRI when administered after injury, thus providing relevance for therapeutic dosing of ilofotase alfa following established AKI. In an AKI-on-CKD ischemic rat model, ilofotase alfa given after the third instance of IRI reduced injury. These results suggest that ilofotase alfa promotes production of adenosine from liberated ATP in injured kidney tissue, thereby amplifying endogenous mechanisms that can reverse tissue injury, in part through A2AR-and non-A2AR-dependent signaling pathways.
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Affiliation(s)
- Diane L. Rosin
- Department of Pharmacology, University of Virginia, Charlottesville, VA, United States,*Correspondence: Diane L. Rosin, , orcid.org/0000-0003-0187-5717
| | - J. Perry Hall
- Inflammation and Immunology Research Unit, Pfizer Inc., Cambridge, MA, United States
| | - Shuqiu Zheng
- Division of Nephrology, Center for Immunity, Inflammation and Regeneration, University of Virginia, Charlottesville, VA, United States
| | - Liping Huang
- Division of Nephrology, Center for Immunity, Inflammation and Regeneration, University of Virginia, Charlottesville, VA, United States
| | - Silvia Campos-Bilderback
- Division of Nephrology, Department of Medicine, Indiana University School of Medicine, Indiana Center for Biological Microscopy, Roudebush VA Medical Center, Indianapolis, IN, United States
| | - Ruben Sandoval
- Division of Nephrology, Department of Medicine, Indiana University School of Medicine, Indiana Center for Biological Microscopy, Roudebush VA Medical Center, Indianapolis, IN, United States
| | - Andrea Bree
- Inflammation and Immunology Research Unit, Pfizer Inc., Cambridge, MA, United States
| | - Kevin Beaumont
- BioMedicine Design, Pfizer Inc., Cambridge, MA, United States
| | - Emily Miller
- BioMedicine Design, Pfizer Inc., Groton, CT, United States
| | - Jennifer Larsen
- Early Clinical Development, Pfizer Inc., Groton, CT, United States
| | - Ghazal Hariri
- Drug Product Development, Pfizer Inc., Cambridge, MA, United States
| | - Neelu Kaila
- Medicinal Chemistry, Pfizer Inc., Cambridge, MA, United States
| | - Iain M. Encarnacion
- Division of Nephrology, Center for Immunity, Inflammation and Regeneration, University of Virginia, Charlottesville, VA, United States
| | - Jeremy D. Gale
- Inflammation and Immunology Research Unit, Pfizer Inc., Cambridge, MA, United States
| | | | - Bruce A. Molitoris
- Division of Nephrology, Department of Medicine, Indiana University School of Medicine, Indiana Center for Biological Microscopy, Roudebush VA Medical Center, Indianapolis, IN, United States
| | - Mark D. Okusa
- Division of Nephrology, Center for Immunity, Inflammation and Regeneration, University of Virginia, Charlottesville, VA, United States
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13
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V Ganesh G, Ganesan K, Xu B, Ramkumar KM. Nrf2 driven macrophage responses in diverse pathophysiological contexts: Disparate pieces from a shared molecular puzzle. Biofactors 2022; 48:795-812. [PMID: 35618963 DOI: 10.1002/biof.1867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 05/03/2022] [Indexed: 11/10/2022]
Abstract
The wide anatomical distribution of macrophages and their vast array of functions match various polarization states and their involvement in homeostasis and disease. The confluence of different cellular signaling networks, including direct involvement in inflammation, at the doorstep of the transcription factor Nuclear Factor- erythroid (NF-E2) p45-related factor 2 (Nrf2) activation raises the importance of deciphering the molecular circuitry at the background of multiple-discrete and antagonistic yet flexible and contextual pathways. While we primarily focus on wound healing and repair mechanisms that are affected in diabetic foot ulcers (DFUs), we strive to explore the striking similarities and differences in molecular events including inflammation, angiogenesis, and fibrosis during tissue injury and wound persistence that accumulates pro-inflammatory senescent macrophages, as a means to identify possible targets or cellular mediators to lessen DFU disease burden. In addition, the role of iron in the modulation of Nrf2 response in macrophages is crucial and reviewed here. Targeted approaches, unlike conventional treatments, in DFU management will require the review and re-assessment of mediators with relevance to other pathological conditions.
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Affiliation(s)
- Goutham V Ganesh
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science & Technology, Kattankulathur, Tamil Nadu, India
| | - Kumar Ganesan
- School of Chinese Medicine, LKS Faculty of Medicine, University of Hong Kong, Hong Kong
| | - Baojun Xu
- Food Science and Technology Programme, BNU-HKBU United International College, Zhuhai, Guangdong, China
| | - Kunka Mohanram Ramkumar
- Department of Biotechnology, School of Bioengineering, SRM Institute of Science & Technology, Kattankulathur, Tamil Nadu, India
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14
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Richter B, Kapanadze T, Weingärtner N, Walter S, Vogt I, Grund A, Schmitz J, Bräsen JH, Limbourg FP, Haffner D, Leifheit-Nestler M. High phosphate-induced progressive proximal tubular injury is associated with the activation of Stat3/Kim-1 signaling pathway and macrophage recruitment. FASEB J 2022; 36:e22407. [PMID: 35713543 DOI: 10.1096/fj.202200167rr] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 05/24/2022] [Accepted: 05/28/2022] [Indexed: 12/11/2022]
Abstract
Dietary phosphate intake in the Western population greatly exceeds the recommended dietary allowance and is linked to enhanced cardiovascular and all-cause mortality. It is unclear whether a chronic high phosphate diet (HPD) causes kidney injury in healthy individuals. Here, we show that feeding a 2% HPD in C57BL/6N mice for one up to six months resulted in hyperphosphatemia, hyperphosphaturia, increased plasma levels of fibroblast growth factor (FGF) 23, and parathyroid hormone (PTH) compared to mice on a 0.8% phosphate diet. Kidney injury was already noted after two months of HPD characterized by loss of proximal tubular (PT) cell polarity, flattened epithelia, disruption of brush border membranes, vacuolization, increased PT cell proliferation, marked interstitial mononuclear infiltration, and progressive accumulation of collagen fibers. HPD increased Stat3 activation and Kim-1 expression in PT epithelial cells and enhanced renal synthesis of chemokines recruiting monocytes and macrophages as well as macrophage related factors. Enhanced recruitment of F4/80+ macrophages around injured PT lesions was timely associated with increased Kim-1 synthesis, tubular MCP-1 expression, and degree of PT injury score. Likewise, tubulointerstitial fibrosis was associated with activation of Stat3/Kim-1 signaling pathway. The stimulation of human proximal tubular cells with high phosphate activated Stat3 signaling and induced HAVCR1 and CCL2 expression. We conclude that high phosphate results in progressive proximal tubular injury, indicating that high dietary phosphate intake may affect kidney health and therefore represents an underestimated health problem for the general population.
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Affiliation(s)
- Beatrice Richter
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Pediatric Research Center, Hannover Medical School, Hannover, Germany
| | - Tamar Kapanadze
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany.,Vascular Medicine Research, Hannover Medical School, Hannover, Germany
| | - Nina Weingärtner
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Pediatric Research Center, Hannover Medical School, Hannover, Germany
| | - Stefanie Walter
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Pediatric Research Center, Hannover Medical School, Hannover, Germany
| | - Isabel Vogt
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Pediatric Research Center, Hannover Medical School, Hannover, Germany
| | - Andrea Grund
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Pediatric Research Center, Hannover Medical School, Hannover, Germany
| | - Jessica Schmitz
- Institute of Pathology, Nephropathology Unit, Hannover Medical School, Hannover, Germany
| | - Jan Hinrich Bräsen
- Institute of Pathology, Nephropathology Unit, Hannover Medical School, Hannover, Germany
| | - Florian P Limbourg
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany.,Vascular Medicine Research, Hannover Medical School, Hannover, Germany
| | - Dieter Haffner
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Pediatric Research Center, Hannover Medical School, Hannover, Germany
| | - Maren Leifheit-Nestler
- Department of Pediatric Kidney, Liver and Metabolic Diseases, Pediatric Research Center, Hannover Medical School, Hannover, Germany
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15
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Shin NS, Marlier A, Xu L, Doilicho N, Linberg D, Guo J, Cantley LG. Arginase-1 Is Required for Macrophage-Mediated Renal Tubule Regeneration. J Am Soc Nephrol 2022; 33:1077-1086. [PMID: 35577558 PMCID: PMC9161787 DOI: 10.1681/asn.2021121548] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 03/22/2022] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND After kidney injury, macrophages transition from initial proinflammatory activation to a proreparative phenotype characterized by expression of arginase-1 (Arg1), mannose receptor 1 (Mrc1), and macrophage scavenger receptor 1 (Msr1). The mechanism by which these alternatively activated macrophages promote repair is unknown. METHODS We characterized the macrophage and renal responses after ischemia-reperfusion injury with contralateral nephrectomy in LysM-Cre;Arg1fl/fl mice and littermate controls and used in vitro coculture of macrophages and tubular cells to determine how macrophage-expressed arginase-1 promotes kidney repair. RESULTS After ischemia-reperfusion injury with contralateral nephrectomy, Arg1-expressing macrophages were almost exclusively located in the outer stripe of the medulla adjacent to injured S3 tubule segments containing luminal debris or casts. Macrophage Arg1 expression was reduced by more than 90% in injured LysM-Cre;Arg1fl/fl mice, resulting in decreased mouse survival, decreased renal tubular cell proliferation and decreased renal repair compared with littermate controls. In vitro studies demonstrate that tubular cells exposed apically to dead cell debris secrete high levels of GM-CSF and induce reparative macrophage activation, with those macrophages in turn secreting Arg1-dependent factor(s) that directly stimulate tubular cell proliferation. CONCLUSIONS GM-CSF-induced, proreparative macrophages express arginase-1, which is required for the S3 tubular cell proliferative response that promotes renal repair after ischemia-reperfusion injury.
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Affiliation(s)
- Naomi S. Shin
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Arnaud Marlier
- Department of Cellular and Molecular Physiology, Centers for Mendelian Genomics, Yale University School of Medicine, New Haven, Connecticut
| | - Leyuan Xu
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Natnael Doilicho
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | | | - Jiankan Guo
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Lloyd G. Cantley
- Section of Nephrology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
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16
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Mizokami T, Shimada M, Suzuki K. Macrophage depletion attenuates acute renal damage after exhaustive exercise in mice. Int J Sports Med 2022; 43:964-970. [PMID: 35426091 PMCID: PMC9546585 DOI: 10.1055/a-1827-3261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Exhaustive exercise is known to induce acute renal damage. However, the precise
mechanisms remain unclear. We investigated the effects of macrophage depletion
on exhaustive exercise-induced acute renal damage. Male
C57BL/6 J mice were divided into four groups: sedentary with
control liposome (n=8), sedentary with clodronate liposome
(n=8), exhaustive exercise with control liposome (n=8), and
exhaustive exercise with clodronate liposome (n=8). Mice were treated
with clodronate liposomes or control liposomes intraperitoneally for
48 h before undergoing exhaustive exercise. Renal function and renal
histology were tested at 24 h. The expression levels of kidney injury
molecule (KIM)-1 and inflammatory cytokines in kidney tissues were measured by
quantitative RT-PCR, and KIM-1 concentration was semi-quantified by
immunostaining. As a result, exhaustive exercise increased macrophage
infiltration into the kidney. However, clodronate reduced it. Although
exhaustive exercise resulted in an increase in KIM-1 mRNA expression levels and
concentration, injection of clodronate liposome reduced it. In addition, TUNEL
positive apoptotic cells were increased after exercise, but significantly
reduced by clodronate. Clodronate liposome treatment also decreased the mRNA
expression levels of inflammatory cytokines (TNF-α, IL-1β, and
IL-6) in the kidney after exhaustive exercise. These results suggest that
macrophages play a critical role in increasing renal damage by regulating
inflammation.
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Affiliation(s)
- Tsubasa Mizokami
- Graduate School of Sport Sciences, Waseda University, Tokorozawa, Japan
| | - Michiko Shimada
- Department of Cardiology and Nephrology,, Hirosaki University School of Medicine Graduate School of Medicine, Hirosaki 036-8562, Japan
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17
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Driving role of macrophages in transition from acute kidney injury to chronic kidney disease. Chin Med J (Engl) 2022; 135:757-766. [PMID: 35671177 PMCID: PMC9276339 DOI: 10.1097/cm9.0000000000002100] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Acute kidney injury (AKI), characterized by acute renal dysfunction, is an increasingly common clinical problem and an important risk factor in the subsequent development of chronic kidney disease (CKD). Regardless of the initial insults, the progression of CKD after AKI involves multiple types of cells, including renal resident cells and immune cells such as macrophages. Recently, the involvements of macrophages in AKI-to-CKD transition have garnered significant attention. Furthermore, substantial progress has also been made in elucidating the pathophysiological functions of macrophages from the acute kidney to repair or fibrosis. In this review, we highlight current knowledge regarding the roles and mechanisms of macrophage activation and phenotypic polarization, and transdifferentiation in the development of AKI-to-CKD transition. In addition, the potential of macrophage-based therapy for preventing AKI-to-CKD transition is also discussed.
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18
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Wang Y, Peng H, Guo Z, Ullman BR, Yamamoto K, Hong SY, Liu JO. Influence of stereochemistry on the activity of rapadocin, an isoform-specific inhibitor of the nucleoside transporter ENT1. Chem Sci 2021; 12:11484-11489. [PMID: 34667552 PMCID: PMC8447900 DOI: 10.1039/d1sc02295d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 07/16/2021] [Indexed: 12/03/2022] Open
Abstract
Rapadocin is a novel rapamycin-inspired polyketide–tetrapeptide hybrid macrocycle that possesses highly potent and isoform-specific inhibitory activity against the human equilibrative nucleoside transporter 1 (hENT1). Rapadocin contains an epimerizable chiral center in phenylglycine and an olefin group, and can thus exist as a mixture of four stereoisomers. Herein, we report the first total synthesis of the four stereoisomers of rapadocin using two different synthetic strategies and the assignment of their structures. The inhibitory activity of each of the four synthetic isomers on both hENT1 and hENT2 was determined. It was found that the stereochemistry of phenylglycine played a more dominant role than the configuration of the olefin in the activity of rapadocin. These findings will guide the future design and development of rapadocin analogs as new modulators of adenosine signaling. Rapadocin is a novel rapamycin-inspired polyketide–tetrapeptide hybrid macrocycle that possesses highly potent and isoform-specific inhibitory activity against the human equilibrative nucleoside transporter 1 (hENT1).![]()
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Affiliation(s)
- Yuefan Wang
- Department of Pharmacology, Johns Hopkins School of Medicine 725 North Wolfe Street Baltimore MD 21205 USA .,SJ Yan and HJ Mao Laboratory of Chemical Biology, Johns Hopkins University School of Medicine Baltimore MD 21205 USA
| | - Hanjing Peng
- Department of Pharmacology, Johns Hopkins School of Medicine 725 North Wolfe Street Baltimore MD 21205 USA .,SJ Yan and HJ Mao Laboratory of Chemical Biology, Johns Hopkins University School of Medicine Baltimore MD 21205 USA
| | - Zufeng Guo
- Department of Pharmacology, Johns Hopkins School of Medicine 725 North Wolfe Street Baltimore MD 21205 USA .,SJ Yan and HJ Mao Laboratory of Chemical Biology, Johns Hopkins University School of Medicine Baltimore MD 21205 USA.,Center for Novel Target and Therapeutic Intervention, Institute of Life Sciences, Chongqing Medical University Chongqing 400016 China
| | | | - Kana Yamamoto
- Rapafusyn Pharmaceuticals Inc. Baltimore MD 21205 USA
| | - Sam Y Hong
- Rapafusyn Pharmaceuticals Inc. Baltimore MD 21205 USA
| | - Jun O Liu
- Department of Pharmacology, Johns Hopkins School of Medicine 725 North Wolfe Street Baltimore MD 21205 USA .,SJ Yan and HJ Mao Laboratory of Chemical Biology, Johns Hopkins University School of Medicine Baltimore MD 21205 USA.,Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine Baltimore MD 21205 USA
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19
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Zhong DJ, Zhang Y, Zhang S, Ge YY, Tong M, Feng Y, You F, Zhao X, Wang K, Zhang L, Liu X, Chen JF. Adenosine A 2A receptor antagonism protects against hyperoxia-induced retinal vascular loss via cellular proliferation. FASEB J 2021; 35:e21842. [PMID: 34418159 DOI: 10.1096/fj.202100414rr] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 07/22/2021] [Accepted: 07/23/2021] [Indexed: 11/11/2022]
Abstract
Retinopathy of prematurity (ROP) remains one of the major causes of blindness in children worldwide. While current ROP treatments are mostly disruptive to reduce proliferative neovascularization by targeting the hypoxic phase, protection against early hyperoxia-induced retinal vascular loss represents an effective therapeutic window, but no such therapeutic strategy is available. Built upon our recent demonstration that the protection against oxygen-induced retinopathy by adenosine A2A receptor (A2A R) antagonists is most effective when administered at the hyperoxia (not hypoxic) phase, we here uncovered the cellular mechanism underlying the A2A R-mediated protection against early hyperoxia-induced retinal vascular loss by reversing the inhibition of cellular proliferation via possibly multiple signaling pathways. Specifically, we revealed two distinct stages of the hyperoxia phase with greater cellular proliferation and apoptosis activities and upregulation of adenosine signaling at postnatal 9 day (P9) but reduced cellular activities and adenosine-A2A R signaling at P12. Importantly, the A2A R-mediated protection at P9 was associated with the reversal of hyperoxia-induced inhibition of progenitor cells at the peripheral retina at P9 and of retinal endothelial proliferation at P9 and P12. The critical role of cellular proliferation in the hyperoxia-induced retinal vascular loss was validated by the increased avascular areas by siRNA knockdown of the multiple signaling molecules involved in modulation of cellular proliferation, including activin receptor-like kinase 1, DNA-binding protein inhibitor 1, and vascular endothelial growth factor-A.
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Affiliation(s)
- Ding-Juan Zhong
- State Key Laboratory of Optometry, Ophthalmology and Vision Science, The Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou, China.,Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, China
| | - Yu Zhang
- State Key Laboratory of Optometry, Ophthalmology and Vision Science, The Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Shuya Zhang
- State Key Laboratory of Optometry, Ophthalmology and Vision Science, The Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Yuan-Yuan Ge
- State Key Laboratory of Optometry, Ophthalmology and Vision Science, The Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Mengyun Tong
- State Key Laboratory of Optometry, Ophthalmology and Vision Science, The Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Yijia Feng
- State Key Laboratory of Optometry, Ophthalmology and Vision Science, The Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Feng You
- State Key Laboratory of Optometry, Ophthalmology and Vision Science, The Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Xinyue Zhao
- State Key Laboratory of Optometry, Ophthalmology and Vision Science, The Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Ke Wang
- State Key Laboratory of Optometry, Ophthalmology and Vision Science, The Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Liping Zhang
- State Key Laboratory of Optometry, Ophthalmology and Vision Science, The Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Xiaoling Liu
- State Key Laboratory of Optometry, Ophthalmology and Vision Science, The Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Jiang-Fan Chen
- State Key Laboratory of Optometry, Ophthalmology and Vision Science, The Affiliated Eye Hospital, Wenzhou Medical University, Wenzhou, China
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20
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Andrianova NV, Zorov DB, Plotnikov EY. Targeting Inflammation and Oxidative Stress as a Therapy for Ischemic Kidney Injury. BIOCHEMISTRY (MOSCOW) 2021; 85:1591-1602. [PMID: 33705297 DOI: 10.1134/s0006297920120111] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Inflammation and oxidative stress are the main pathological processes that accompany ischemic injury of kidneys and other organs. Based on this, these factors are often chosen as a target for treatment of acute kidney injury (AKI) in a variety of experimental and clinical studies. Note, that since these two components are closely interrelated during AKI development, substances that treat one of the processes often affect the other. The review considers several groups of promising nephroprotectors that have both anti-inflammatory and antioxidant effects. For example, many antioxidants, such as vitamins, polyphenolic compounds, and mitochondria-targeted antioxidants, not only reduce production of the reactive oxygen species in the cell but also modulate activity of the immune cells. On the other hand, immunosuppressors and non-steroidal anti-inflammatory drugs that primarily affect inflammation also reduce oxidative stress under some conditions. Another group of therapeutics is represented by hormones, such as estrogens and melatonin, which significantly reduce severity of the kidney damage through modulation of both these processes. We conclude that drugs with combined anti-inflammatory and antioxidant capacities are the most promising agents for the treatment of acute ischemic kidney injury.
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Affiliation(s)
- N V Andrianova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia.,Faculty of Bioengineering and Bioinformatics, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - D B Zorov
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia. .,Kulakov National Medical Research Center of Obstetrics, Gynecology and Perinatology, Moscow, 117997, Russia
| | - E Y Plotnikov
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia. .,Kulakov National Medical Research Center of Obstetrics, Gynecology and Perinatology, Moscow, 117997, Russia.,Sechenov First Moscow State Medical University, Institute of Molecular Medicine, Moscow, 119991, Russia
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21
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Sasaki K, Terker AS, Pan Y, Li Z, Cao S, Wang Y, Niu A, Wang S, Fan X, Zhang MZ, Harris RC. Deletion of Myeloid Interferon Regulatory Factor 4 (Irf4) in Mouse Model Protects against Kidney Fibrosis after Ischemic Injury by Decreased Macrophage Recruitment and Activation. J Am Soc Nephrol 2021; 32:1037-1052. [PMID: 33619052 PMCID: PMC8259665 DOI: 10.1681/asn.2020071010] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 12/29/2020] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND AKI is characterized by abrupt and reversible kidney dysfunction, and incomplete recovery leads to chronic kidney injury. Previous studies by us and others have indicated that macrophage infiltration and polarization play key roles in recovery from AKI. The role in AKI recovery played by IFN regulatory factor 4 (IRF4), a mediator of polarization of macrophages to the M2 phenotype, is unclear. METHODS We used mice with myeloid or macrophage cell-specific deletion of Irf4 (MΦ Irf4-/- ) to evaluate Irf4's role in renal macrophage polarization and development of fibrosis after severe AKI. RESULTS Surprisingly, although macrophage Irf4 deletion had a minimal effect on early renal functional recovery from AKI, it resulted in decreased renal fibrosis 4 weeks after severe AKI, in association with less-activated macrophages. Macrophage Irf4 deletion also protected against renal fibrosis in unilateral ureteral obstruction. Bone marrow-derived monocytes (BMDMs) from MΦ Irf4-/- mice had diminished chemotactic responses to macrophage chemoattractants, with decreased activation of AKT and PI3 kinase and increased PTEN expression. PI3K and AKT inhibitors markedly decreased chemotaxis in wild-type BMDMs, and in a cultured macrophage cell line. There was significant inhibition of homing of labeled Irf4-/- BMDMs to postischemic kidneys. Renal macrophage infiltration in response to AKI was markedly decreased in MΦ Irf4-/- mice or in wild-type mice with inhibition of AKT activity. CONCLUSIONS Deletion of Irf4 from myeloid cells protected against development of tubulointerstitial fibrosis after severe ischemic renal injury in mice, due primarily to inhibition of AKT-mediated monocyte recruitment to the injured kidney and reduced activation and subsequent polarization into a profibrotic M2 phenotype.
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Affiliation(s)
- Kensuke Sasaki
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Andrew S. Terker
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Yu Pan
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Zhilian Li
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Shirong Cao
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Yinqiu Wang
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Aolei Niu
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Suwan Wang
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Xiaofeng Fan
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Ming-Zhi Zhang
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee,Vanderbilt University School of Medicine, Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Raymond C. Harris
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee,Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, Tennessee,Vanderbilt University School of Medicine, Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee,Department of Veterans Affairs, Nashville, Tennessee
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22
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Ma S, Wang DH. Knockout of Trpa1 Exacerbates Renal Ischemia-Reperfusion Injury With Classical Activation of Macrophages. Am J Hypertens 2021; 34:110-116. [PMID: 33005917 DOI: 10.1093/ajh/hpaa162] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/11/2020] [Accepted: 09/29/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Classically activated macrophages contribute to the development of renal ischemia-reperfusion injury (IRI). This study aimed to investigate the role of transient receptor potential ankyrin 1 (Trpa1), a regulator of macrophage activation, in IRI-induced acute kidney injury (AKI) by using the Trpa1 gene knockout (Trpa1-/-) mouse model. METHODS Male 8-week-old Trpa1-/- mice and wild-type (WT) littermates were subjected to renal ischemia for 35 minutes by clamping bilateral renal pedicles under isoflurane anesthesia, and blood and tissue samples were collected 24 hours after reperfusion and analyzed with histological and molecular measurements. RESULTS Following IRI, Trpa1-/- mice developed more deteriorated biochemical and morphological signs of AKI when comparing with WT mice. More classically activated M1 macrophages were found in the kidneys of Trpa1-/- mice comparing with WT mice after IRI, while the counts of alternatively activated M2 macrophages in the kidney were similar between the 2 strains after IRI. Furthermore, significantly higher expression levels of proinflammatory markers including interleukin-1 beta and tumor necrosis factor alpha were detected in the kidney of Trpa1-/- mice compared with WT mice after IRI. The levels of TRPA1 protein in the kidney of WT mice were also decreased after IRI. CONCLUSIONS Our results show that ablation of Trpa1 exacerbates infiltration of classically activated macrophages, renal inflammation, and renal injury in mice after IRI. These findings suggest that activation of TRPA1 may protect against IRI-induced AKI via regulation of macrophage-mediated inflammatory pathway.
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Affiliation(s)
- Shuangtao Ma
- Division of Nanomedicine and Molecular Intervention, Department of Medicine, College of Human Medicine, Michigan State University, East Lansing, Michigan, USA
| | - Donna H Wang
- Division of Nanomedicine and Molecular Intervention, Department of Medicine, College of Human Medicine, Michigan State University, East Lansing, Michigan, USA
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23
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Wada Y, Iyoda M, Matsumoto K, Suzuki T, Tachibana S, Kanazawa N, Honda H. Reno-protective effect of IL-34 inhibition on cisplatin-induced nephrotoxicity in mice. PLoS One 2021; 16:e0245340. [PMID: 33428678 PMCID: PMC7799787 DOI: 10.1371/journal.pone.0245340] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 12/28/2020] [Indexed: 12/27/2022] Open
Abstract
INTRODUCTION Interleukin-34 (IL-34) shares a receptor (cFMS) with colony stimulating factor-1 (CSF-1), and these two ligands mediate macrophage proliferation. However, in contrast to CSF-1, the influence of IL-34 on tubular epithelial cells (TECs) injury remains unclear. We investigated the physiological effects of IL-34 on TEC damage caused by cisplatin nephrotoxicity (CP-N). METHODS Mice were administered anti-mouse IL-34 antibody (anti-IL-34 Ab; 400 ng/kg) or vehicle from 1 day before and up to 2 days after CP-N induction. In vitro, mouse renal proximal TECs (MRPTEpiC) were cultured to analyze the inhibitory effects of IL-34 on CP-induced TEC apoptosis. RESULTS Compared to vehicle treatment, anti-IL-34 Ab treatment significantly suppressed the intra-renal expression of IL-34 and its two receptors, cFMS and PTP-ζ, and significantly improved renal function, ameliorated tubulointerstitial injury, suppressed macrophage infiltration, and reduced apoptotic cell numbers in CP-N mice. It also significantly reduced the renal transcript levels of Kim-1, MIP-1/CCL3, TNF-α, and Bax in CP-N mice. Furthermore, anti-IL-34 Ab-treated CP-N mice showed less renal infiltration of F4/80+TNF-α+ cells. In vitro, stimulation with CP induced the expression of IL-34 and its two receptors in MRPTEpiC. Anti-IL-34 Ab treatment significantly suppressed CP-induced Bax expression with the degradation of ERK1/2 phosphorylation in damaged MRPTEpiC. CONCLUSIONS IL-34 secreted from damaged TECs appeared to be involved in the progression of CP-N. Inhibition of IL-34 with neutralizing antibody directly prevented CP-induced TEC apoptosis by inhibiting the phosphorylation of ERK 1/2. Blocking of IL-34 appears to suppress the proliferation of cytotoxic macrophages, which indirectly attenuates CP-N. Thus, IL-34 represents a potential therapeutic target for TEC injury, and the inhibition of IL-34 might have a reno-protective effect.
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Affiliation(s)
- Yukihiro Wada
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Masayuki Iyoda
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan.,Department of Microbiology and Immunology, Showa University School of Medicine, Tokyo, Japan
| | - Kei Matsumoto
- Division of Nephrology, Department of Medicine, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Taihei Suzuki
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Shohei Tachibana
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Nobuhiro Kanazawa
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Hirokazu Honda
- Division of Nephrology, Department of Medicine, Showa University School of Medicine, Tokyo, Japan
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"Adenosine an old player with new possibilities in kidney diseases": Preclinical evidences and clinical perspectives. Life Sci 2020; 265:118834. [PMID: 33249096 DOI: 10.1016/j.lfs.2020.118834] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 10/02/2020] [Accepted: 11/21/2020] [Indexed: 12/21/2022]
Abstract
Renal injury might originate from multiple factors like ischemia reperfusion (I/R), drug toxicity, cystic fibrosis, radio contrast agent etc. The four adenosine receptor subtypes have been identified and found to show diverse physiological and pathological roles in kidney diseases. The activation of A1 adenosine receptor (A1) protects against acute kidney injury by improving renal hemodynamic alterations, decreasing tubular necrosis and its inhibition might facilitate removal of toxin or drug metabolite in chronic kidney disease models. Furthermore, recent findings revealed that A2A receptor subtype activation regulates macrophage phenotype in experimental models of nephritis. Interestingly the emerging role of adenosine kinase inhibitors in kidney diseases has been discussed which act by increasing adenosine availability at target sites and thereby promote A2A receptor stimulation. In addition, the least explored adenosine receptor subtype A3 inhibition was observed to exert anti- oxidant, immunosuppressive and anti-fibrotic effects, but more studies are required to confirm its benefits in other renal injury models. The clinical studies targeting A1 receptor in patients with pre-existing kidney disease have yielded disappointing results, perhaps owing to the origin of unexpected neurological complications during the course of trial. Importantly, conducting well designed clinical trials and testing adenosine modulators with lesser brain penetrability could clear the way for clinical approval of these agents for patients with renal functional impairments.
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25
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Jang HR, Lee K, Jeon J, Kim JR, Lee JE, Kwon GY, Kim YG, Kim DJ, Ko JW, Huh W. Poly (ADP-Ribose) Polymerase Inhibitor Treatment as a Novel Therapy Attenuating Renal Ischemia-Reperfusion Injury. Front Immunol 2020; 11:564288. [PMID: 33178190 PMCID: PMC7597449 DOI: 10.3389/fimmu.2020.564288] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 09/14/2020] [Indexed: 01/17/2023] Open
Abstract
Intrarenal robust inflammatory response following ischemia-reperfusion injury (IRI) is a major factor in the pathogenesis of renal injury in ischemic acute kidney injury (AKI). Although numerous studies have investigated various agents of immune modulation or suppression for ischemic AKI, few showed reproducible effects. We hypothesized that poly (ADP-ribose) polymerase (PARP) inhibitor may favorably change post-ischemic intrarenal immunologic micromilieu by reducing damage-associated molecular pattern (DAMP) signals and improve renal outcome in ischemic AKI. The effects of JPI-289 (a PARP inhibitor) on early renal injury in a murine IRI model and hypoxic HK-2 cell model were investigated. Bilateral IRI surgery was performed in three groups of 9-week-old male C57BL/6 mice (control, JPI-289 50 mg/kg, and JPI-289 100 mg/kg; n = 9–10 in each group). Saline or JPI-289 was intraperitoneally injected. Renal function deterioration was significantly attenuated in the JPI-289 treatment groups in a dose-dependent manner. Inflammatory cell infiltration and proinflammatory cytokine/chemokine expressions in the post-ischemic kidneys were also attenuated by JPI-289 treatment. JPI-289 treatment at 0.5 and 0.75 μg/ml facilitated the proliferation of hypoxic HK-2 cells. PARP inhibition with JPI-289 treatment showed favorable effects in ischemic AKI by attenuating intrarenal inflammatory cascade in a murine model and facilitating proliferation of hypoxic HK-2 cells.
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Affiliation(s)
- Hye Ryoun Jang
- Division of Nephrology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Kyungho Lee
- Division of Nephrology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Junseok Jeon
- Division of Nephrology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Jung-Ryul Kim
- Department of Clinical Pharmacology and Therapeutics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Jung Eun Lee
- Division of Nephrology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Ghee Young Kwon
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Yoon-Goo Kim
- Division of Nephrology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Dae Joong Kim
- Division of Nephrology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Jae-Wook Ko
- Department of Clinical Pharmacology and Therapeutics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Wooseong Huh
- Division of Nephrology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.,Department of Clinical Pharmacology and Therapeutics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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26
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Nozaki Y, Ri J, Sakai K, Niki K, Funauchi M, Matsumura I. Protective Effects of Recombinant Human Soluble Thrombomodulin on Lipopolysaccharide-Induced Acute Kidney Injury. Int J Mol Sci 2020; 21:ijms21072519. [PMID: 32260474 PMCID: PMC7177880 DOI: 10.3390/ijms21072519] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/02/2020] [Accepted: 04/02/2020] [Indexed: 01/20/2023] Open
Abstract
Thrombomodulin (TM) is a single transmembrane, multidomain glycoprotein receptor for thrombin, and is best known for its role as a cofactor in a clinically important natural anticoagulant pathway. In addition to its anticoagulant function, TM has well-defined anti-inflammatory properties. Soluble TM levels increase significantly in the plasma of septic patients; however, the possible involvement of recombinant human soluble TM (rTM) transduction in the pathogenesis of lipopolysaccharide (LPS)-induced nephrotoxicity, including acute kidney injury (AKI), has remained unclear. Mice were injected intraperitoneally with 15 mg/kg LPS. rTM (3 mg/kg) or saline was administered to the animals before the 3 and 24 h LPS-injection. At 24 and 48 h, blood urea nitrogen, the inflammatory cytokines in sera and kidney, and histological findings were assessed. Cell activation and apoptosis signal was assessed by Western blot analysis. In this study using a mouse model of LPS-induced AKI, we found that rTM attenuated renal damage by reducing both cytokine and cell activation and apoptosis signals with the accumulation of CD4+ T-cells, CD11c+ cells, and F4/80+ cells via phospho c-Jun activations and Bax expression. These findings suggest that the mechanism underlying these effects of TM may be mediated by a reduction in inflammatory cytokine production in response to LPS. These molecules might thereby provide a new therapeutic strategy in the context of AKI with sepsis.
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Yoo KD, Cha RH, Lee S, Kim JE, Kim KH, Lee JS, Kim DK, Kim YS, Yang SH. Chemokine receptor 5 blockade modulates macrophage trafficking in renal ischaemic-reperfusion injury. J Cell Mol Med 2020; 24:5515-5527. [PMID: 32227583 PMCID: PMC7214177 DOI: 10.1111/jcmm.15207] [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: 06/10/2019] [Revised: 02/01/2020] [Accepted: 03/06/2020] [Indexed: 01/19/2023] Open
Abstract
Chemokine receptor 5 (CCR5) is a pivotal regulator of macrophage trafficking in the kidneys in response to an inflammatory cascade. We investigated the role of CCR5 in experimental ischaemic‐reperfusion injury (IRI) pathogenesis. To establish IRI, we clamped the bilateral renal artery pedicle for 30 min and then reperfused the kidney. We performed adoptive transfer of lipopolysaccharide (LPS)‐treated RAW 264.7 macrophages following macrophage depletion in mice. B6.CCR5−/− mice showed less severe IRI based on tubular epithelial cell apoptosis than did wild‐type mice. CXCR3 expression in CD11b+ cells and inducible nitric oxide synthase levels were more attenuated in B6.CCR5−/− mice. B6.CCR5−/− mice showed increased arginase‐1 and CD206 expression. Macrophage‐depleted wild‐type mice showed more injury than B6.CCR5−/− mice after M1 macrophage transfer. Adoptive transfer of LPS‐treated RAW 264.7 macrophages reversed the protection against IRI in wild‐type, but not B6.CCR5−/− mice. Upon knocking out CCR5 in macrophages, migration of bone marrow‐derived macrophages from wild‐type mice towards primary tubular epithelial cells with recombinant CCR5 increased. Phospho‐CCR5 expression in renal tissues of patients with acute tubular necrosis was increased, showing a positive correlation with tubular inflammation. In conclusion, CCR5 deficiency favours M2 macrophage activation, and blocking CCR5 might aid in treating acute kidney injury.
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Affiliation(s)
- Kyung Don Yoo
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Ran-Hui Cha
- Department of Internal Medicine, National Medical Center, Seoul, Korea
| | - Sunhwa Lee
- Department of Internal Medicine, Kangwon National University Hospital, Chuncheon, Korea.,Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Korea
| | - Ji Eun Kim
- Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Kyu Hong Kim
- Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Korea
| | - Jong Soo Lee
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Dong Ki Kim
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea.,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.,Kidney Research Institute, Seoul National University, Seoul, Korea
| | - Yon Su Kim
- Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Korea.,Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea.,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.,Kidney Research Institute, Seoul National University, Seoul, Korea.,Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Seung Hee Yang
- Kidney Research Institute, Seoul National University, Seoul, Korea.,Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
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28
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Kawamura M, Imamura R, Kobayashi Y, Taniguchi A, Nakazawa S, Kato T, Namba-Hamano T, Abe T, Uemura M, Kobayashi H, Nonomura N. Oral Administration of Si-Based Agent Attenuates Oxidative Stress and Ischemia-Reperfusion Injury in a Rat Model: A Novel Hydrogen Administration Method. Front Med (Lausanne) 2020; 7:95. [PMID: 32266279 PMCID: PMC7099649 DOI: 10.3389/fmed.2020.00095] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 03/04/2020] [Indexed: 11/13/2022] Open
Abstract
Organ ischemia-reperfusion injury (IRI), which is unavoidable in kidney transplantation, induces the formation of reactive oxygen species and causes organ damage. Although the efficacy of molecular hydrogen (H2) in IRI has been reported, oral intake of H2-rich water and inhalation of H2 gas are still not widely used in clinical settings because of the lack of efficiency and difficulty in handling. We successfully generated large quantities of H2 molecules by crushing silicon (Si) to nano-sized Si particles (nano-Si) which were allowed to react with water. The nano-Si or relatively large-sized Si particles (large-Si) were orally administered to rats with renal IRI. Animals were divided into four groups: sham, IRI, IRI + nano-Si, and IRI + large-Si. The levels of serum creatinine and urine protein were significantly decreased 72 h following IRI in rats that were administered nano-Si. The levels of oxidative stress marker, urinary 8-hydroxydeoxyguanosine were also significantly decreased with the nano-Si treatment. Transcriptome and gene ontology enrichment analyses showed that the oral nano-Si intake downregulated the biological processes related to oxidative stress, such as immune response, cytokine production, and extrinsic apoptotic signaling pathway. Alterations in the regulation of a subset of genes in the altered pathways were validated by quantitative polymerase chain reaction. Furthermore, immunohistochemical analysis demonstrated that the nano-Si treatment alleviated interstitial macrophage infiltration and tubular apoptosis, implicating the anti-inflammatory and anti-apoptotic effects of nano-Si. In conclusion, renal IRI was attenuated by the oral administration of nano-Si, which should be considered as a novel H2 administration method.
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Affiliation(s)
- Masataka Kawamura
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Ryoichi Imamura
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yuki Kobayashi
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Japan
| | - Ayumu Taniguchi
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Shigeaki Nakazawa
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Taigo Kato
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Tomoko Namba-Hamano
- Department of Nephrology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Toyofumi Abe
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Motohide Uemura
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hikaru Kobayashi
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Japan
| | - Norio Nonomura
- Department of Urology, Osaka University Graduate School of Medicine, Suita, Japan
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29
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Adenosine Receptor A1-A2a Heteromers Regulate EAAT2 Expression and Glutamate Uptake via YY1-Induced Repression of PPAR γ Transcription. PPAR Res 2020; 2020:2410264. [PMID: 32206061 PMCID: PMC7079221 DOI: 10.1155/2020/2410264] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 01/23/2020] [Indexed: 12/29/2022] Open
Abstract
Adenosine receptors A1 (A1AR) and A2a (A2aAR) play an important role in regulating glutamate uptake to avoid glutamate accumulation that causes excitotoxicity in the brain; however, the precise mechanism of the effects of A1AR and A2aAR is unclear. Herein, we report that expression of the A1AR protein in the astrocyte membrane and the level of intracellular glutamate were decreased, while expression of the A2aR protein was elevated in cells exposed to oxygen-glucose deprivation (OGD) conditions. Coimmunoprecipitation (Co-IP) experiments showed that A1AR interacts with A2aAR under OGD conditions. The activation of A1AR and inactivation of A2aAR by 2-chloro-N6-cyclopentyladenosine (CCPA) and SCH58251, respectively, partly reversed OGD-mediated glutamate uptake dysfunction, elevated EAAT2, and PPARγ protein levels, and suppressed the expression of Ying Yang 1 (YY1). Both the silencing of YY1 and the activation of PPARγ upregulated EAAT2 expression. Moreover, YY1 silencing elevated the PPARγ level under both normal and OGD conditions. Histone deacetylase (HDAC)1 was found to interact with YY1, and HDAC1 silencing improved PPARγ promoter activity. Taken together, our findings suggest that A1AR-A2aAR heteromers regulate EAAT2 expression and glutamate uptake through the YY1-mediated recruitment of HDAC1 to the PPARγ promoter region.
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30
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Abstract
PURPOSE OF REVIEW Preclinical data suggests that transforming growth factor-β (TGF-β) is arguably the most potent profibrotic growth factor in kidney injury. Despite this, recent clinical trials targeting TGF-β have been disappointing. These negative studies suggest that TGF-β signaling in the injured kidney might be more complicated than originally thought. This review examines recent studies that expand our understanding of how this pleiotropic growth factor affects renal injury. RECENT FINDINGS There are recent studies showing new mechanisms whereby TGF-β can mediate injury (e.g. epigenetic effects, macrophage chemoattractant). However, more significant are the increasing reports on cross-talk between TGF-β signaling and other pathways relevant to renal injury such as Wnt/β-catenin, YAP/TAZ (transcriptional coactivator with PDZ-binding motif), and klotho/FGF23. TGF-β clearly alters the response to injury, not just by direct transcriptional changes on target cells, but also through effects on other signaling pathways. In T cells and tubular epithelial cells, some of these TGF-β-mediated changes are potentially beneficial. SUMMARY It is unlikely that inhibition of TGF-β per se will be a successful antifibrotic strategy, but a better understanding of TGF-β's actions may reveal promising downstream targets or modulators of signaling to target therapeutically for chronic kidney disease.
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31
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Collino F, Lopes JA, Tapparo M, Tortelote GG, Kasai-Brunswick TH, Lopes GM, Almeida DB, Skovronova R, Wendt CHC, de Miranda KR, Bussolati B, Vieyra A, Lindoso RS. Extracellular Vesicles Derived from Induced Pluripotent Stem Cells Promote Renoprotection in Acute Kidney Injury Model. Cells 2020; 9:cells9020453. [PMID: 32079274 PMCID: PMC7072760 DOI: 10.3390/cells9020453] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 01/16/2020] [Accepted: 02/12/2020] [Indexed: 12/22/2022] Open
Abstract
Induced pluripotent stem cells (iPSC) have been the focus of several studies due to their wide range of application, including in cellular therapy. The use of iPSC in regenerative medicine is limited by their tumorigenic potential. Extracellular vesicles (EV) derived from stem cells have been shown to support renal recovery after injury. However, no investigation has explored the potential of iPSC-EV in the treatment of kidney diseases. To evaluate this potential, we submitted renal tubule cells to hypoxia-reoxygenation injury, and we analyzed cell death rate and changes in functional mitochondria mass. An in vivo model of ischemia-reperfusion injury was used to evaluate morphological and functional alterations. Gene array profile was applied to investigate the mechanism involved in iPSC-EV effects. In addition, EV derived from adipose mesenchymal cells (ASC-EV) were also used to compare the potential of iPSC-EV in support of tissue recovery. The results showed that iPSC-EV were capable of reducing cell death and inflammatory response with similar efficacy than ASC-EV. Moreover, iPSC-EV protected functional mitochondria and regulated several genes associated with oxidative stress. Taken together, these results show that iPSC can be an alternative source of EV in the treatment of different aspects of kidney disease.
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Affiliation(s)
- Federica Collino
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil; (F.C.); (J.A.L.); (G.G.T.); (T.H.K.-B.); (G.M.C.L.); (D.B.A.)
- National Institute of Science and Technology for Regenerative Medicine-REGENERA, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
- Department of Biomedical Sciences, University of Padova, 35131 Padua, Italy
| | - Jarlene A. Lopes
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil; (F.C.); (J.A.L.); (G.G.T.); (T.H.K.-B.); (G.M.C.L.); (D.B.A.)
- National Institute of Science and Technology for Regenerative Medicine-REGENERA, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
- National Center for Structural Biology and Bioimaging/CENABIO, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
| | - Marta Tapparo
- Department of Medical Sciences, Molecular Biotechnology Center, University of Torino, 10126 Torino, Italy;
| | - Giovane G. Tortelote
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil; (F.C.); (J.A.L.); (G.G.T.); (T.H.K.-B.); (G.M.C.L.); (D.B.A.)
- Department of Pediatrics’ Section of Pediatric Nephrology, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Taís H. Kasai-Brunswick
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil; (F.C.); (J.A.L.); (G.G.T.); (T.H.K.-B.); (G.M.C.L.); (D.B.A.)
- National Institute of Science and Technology for Regenerative Medicine-REGENERA, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
- National Center for Structural Biology and Bioimaging/CENABIO, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
| | - Gustavo M.C. Lopes
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil; (F.C.); (J.A.L.); (G.G.T.); (T.H.K.-B.); (G.M.C.L.); (D.B.A.)
- National Institute of Science and Technology for Regenerative Medicine-REGENERA, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
- National Center for Structural Biology and Bioimaging/CENABIO, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
| | - Douglas B. Almeida
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil; (F.C.); (J.A.L.); (G.G.T.); (T.H.K.-B.); (G.M.C.L.); (D.B.A.)
- National Institute of Science and Technology for Regenerative Medicine-REGENERA, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
- National Center for Structural Biology and Bioimaging/CENABIO, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
| | - Renata Skovronova
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Turin, Italy (B.B.)
| | - Camila H. C. Wendt
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil; (F.C.); (J.A.L.); (G.G.T.); (T.H.K.-B.); (G.M.C.L.); (D.B.A.)
| | - Kildare R. de Miranda
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil; (F.C.); (J.A.L.); (G.G.T.); (T.H.K.-B.); (G.M.C.L.); (D.B.A.)
- National Center for Structural Biology and Bioimaging/CENABIO, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
- National Institute of Science and Technology of Structural Biology and Bioimaging-INBEB, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
| | - Benedetta Bussolati
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Turin, Italy (B.B.)
| | - Adalberto Vieyra
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil; (F.C.); (J.A.L.); (G.G.T.); (T.H.K.-B.); (G.M.C.L.); (D.B.A.)
- National Institute of Science and Technology for Regenerative Medicine-REGENERA, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
- National Center for Structural Biology and Bioimaging/CENABIO, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
- Graduate Program of Translational Biomedicine/BIOTRANS, Grande Rio University, 25071-202 Duque de Caxias, Brazil
- Correspondence: (A.V.); (R.S.L.); Tel.: +55-21-3938-6521 (A.V.); +55-21-3938-6520 (R.S.L.)
| | - Rafael Soares Lindoso
- Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil; (F.C.); (J.A.L.); (G.G.T.); (T.H.K.-B.); (G.M.C.L.); (D.B.A.)
- National Institute of Science and Technology for Regenerative Medicine-REGENERA, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
- National Center for Structural Biology and Bioimaging/CENABIO, Federal University of Rio de Janeiro, 21941-902 Rio de Janeiro, Brazil
- Correspondence: (A.V.); (R.S.L.); Tel.: +55-21-3938-6521 (A.V.); +55-21-3938-6520 (R.S.L.)
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Han SJ, Lee HT. Mechanisms and therapeutic targets of ischemic acute kidney injury. Kidney Res Clin Pract 2019; 38:427-440. [PMID: 31537053 PMCID: PMC6913588 DOI: 10.23876/j.krcp.19.062] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 07/13/2019] [Accepted: 07/17/2019] [Indexed: 12/19/2022] Open
Abstract
Acute kidney injury (AKI) due to renal ischemia reperfusion (IR) is a major clinical problem without effective therapy and is a significant and frequent cause of morbidity and mortality during the perioperative period. Although the pathophysiology of ischemic AKI is not completely understood, several important mechanisms of renal IR-induced AKI have been studied. Renal ischemia and subsequent reperfusion injury initiates signaling cascades mediating renal cell necrosis, apoptosis, and inflammation, leading to AKI. Better understanding of the molecular and cellular pathophysiological mechanisms underlying ischemic AKI will provide more targeted approach to prevent and treat renal IR injury. In this review, we summarize important mechanisms of ischemic AKI, including renal cell death pathways and the contribution of endothelial cells, epithelial cells, and leukocytes to the inflammatory response during ischemic AKI. Additionally, we provide some updated potential therapeutic targets for the prevention or treatment of ischemic AKI, including Toll-like receptors, adenosine receptors, and peptidylarginine deiminase 4. Finally, we propose mechanisms of ischemic AKI-induced liver, intestine, and kidney dysfunction and systemic inflammation mainly mediated by Paneth cell degranulation as a potential explanation for the high mortality observed with AKI.
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Affiliation(s)
- Sang Jun Han
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, NY, USA
| | - H Thomas Lee
- Department of Anesthesiology, College of Physicians and Surgeons of Columbia University, New York, NY, USA
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33
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Sedin J, Giraud A, Steiner SE, Ahl D, Persson AEG, Melican K, Richter-Dahlfors A, Phillipson M. High Resolution Intravital Imaging of the Renal Immune Response to Injury and Infection in Mice. Front Immunol 2019; 10:2744. [PMID: 31921099 PMCID: PMC6916672 DOI: 10.3389/fimmu.2019.02744] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 11/08/2019] [Indexed: 12/14/2022] Open
Abstract
We developed an experimental set up that enables longitudinal studies of immune cell behavior in situ in the challenged as well as unchallenged kidney of anesthetized mice over several hours. Using highly controlled vacuum to stabilize the kidney, the superficial renal cortex could continuously be visualized with minimal disruption of the local microenvironment. No visible changes in blood flow or neutrophils and macrophages numbers were observed after several hours of visualizing the unchallenged kidney, indicating a stable tissue preparation without apparent tissue damage. Applying this set up to monocyte/macrophage (CX3CR1GFP/+) reporter mice, we observed the extensive network of stellate-shaped CX3CR1 positive cells (previously identified as renal mononuclear phagocytes). The extended dendrites of the CX3CR1 positive cells were found to bridge multiple capillaries and tubules and were constantly moving. Light induced sterile tissue injury resulted in rapid neutrophil accumulation to the site of injury. Similarly, microinfusion of uropathogenic Escherichia coli into a single nephron induced a rapid and massive recruitment of neutrophils to the site of infection, in addition to active bacterial clearance by neutrophils. In contrast, the kidney resident mononuclear phagocytes were observed to not increase in numbers or migrate toward the site of injury or infection. In conclusion, this model allows for longitudinal imaging of responses to localized kidney challenges in the mouse.
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Affiliation(s)
- John Sedin
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Antoine Giraud
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Svava E Steiner
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - David Ahl
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - A Erik G Persson
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Keira Melican
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Agneta Richter-Dahlfors
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Mia Phillipson
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
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Zhao J, Zheng H, Sui Z, Jing F, Quan X, Zhao W, Liu G. Ursolic acid exhibits anti-inflammatory effects through blocking TLR4-MyD88 pathway mediated by autophagy. Cytokine 2019; 123:154726. [PMID: 31302461 DOI: 10.1016/j.cyto.2019.05.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 04/23/2019] [Accepted: 05/13/2019] [Indexed: 02/02/2023]
Abstract
There is an urgent need for effective treatments to reduce the large and growing burden of acute kidney injury (AKI) and its consequences. Inflammation is believed to play a vital role in the pathophysiology of AKI. Macrophage autophagy is considered protective against inflammation. Previous study discovered that ursolic acid (UA), a natural pentacyclic triterpene carboxylic acid found in many plants as apples, bilberries, cranberries and so on, promoted cancer cell autophagy. In the present study, we aimed to explore the effect of UA on ameliorating AKI and the role of macrophage autophagy in the context of inflammation. The data from in vivo experiments showed that pretreatment of mice with UA significantly suppressed xylene-induced ear oedema as well as protected against LPS-induced AKI. Related mechanisms were further studied through in vitro experiment. As expected, UA decreased inflammatory factors TNF-α, IL-6 and IL-1β secretion in macrophages in response to lipopolysaccharide (LPS) stimulation. Furthermore, UA blocked LPS-induced TLR4/MyD88 pathway. More importantly, enhanced autophagy of macrophages by UA through increasing the expression of both LC3B and Beclin-1 led to alter macrophage function. What is more, similar to UA, autophagy inhibitor 3-MA obviously decreased inflammation factors releases hinting the vital role of autophagy in regulating inflammation. In all, above study suggested that UA is a potential anti-inflammatory natural compound for treating AKI by inducing autophagy.
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Affiliation(s)
- Jun Zhao
- Department of Pharmacy, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Haoyi Zheng
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China
| | - Zhongguo Sui
- Department of Pharmacy, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Fanbo Jing
- Department of Pharmacy, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xianghua Quan
- Department of Pharmacy, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Wenwen Zhao
- Qingdao University Medical College, 308 Ningxia Road, Qingdao, Shandong 266021, China
| | - Guangwei Liu
- Outpatient Department, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China.
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35
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Engel JE, Chade AR. Macrophage polarization in chronic kidney disease: a balancing act between renal recovery and decline? Am J Physiol Renal Physiol 2019; 317:F1409-F1413. [PMID: 31566432 DOI: 10.1152/ajprenal.00380.2019] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Macrophages are heterogenous cells of the innate immune system that can fluidly modulate their phenotype to respond to their local microenvironment. They are found throughout the renal compartments, where they contribute to homeostasis and function. However, renal injury activates molecular pathways that initially stimulate differentiation of macrophages into a proinflammatory M1 phenotype. Later in the course of healing, abundant apoptotic debris and anti-inflammatory cytokines induce the production of anti-inflammatory M2 macrophages, which contribute to tissue regeneration and repair. Thus, the dynamic balance of M1 and M2 populations may outline the burden of inflammation and process of tissue repair that define renal outcomes, which has been the impetus for therapeutic efforts targeting macrophages. This review will discuss the role of these phenotypes in the progression of chronic renal injury, potential pathogenic mechanisms, and the promise of macrophage-based therapeutic applications for chronic kidney disease.
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Affiliation(s)
- Jason E Engel
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi
| | - Alejandro R Chade
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, Mississippi.,Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi.,Department of Radiology, University of Mississippi Medical Center, Jackson, Mississippi
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36
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Perry HM, Görldt N, Sung SSJ, Huang L, Rudnicka KP, Encarnacion IM, Bajwa A, Tanaka S, Poudel N, Yao J, Rosin DL, Schrader J, Okusa MD. Perivascular CD73 + cells attenuate inflammation and interstitial fibrosis in the kidney microenvironment. Am J Physiol Renal Physiol 2019; 317:F658-F669. [PMID: 31364375 PMCID: PMC6766625 DOI: 10.1152/ajprenal.00243.2019] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/15/2019] [Accepted: 07/16/2019] [Indexed: 02/07/2023] Open
Abstract
Progressive tubulointerstitial fibrosis may occur after acute kidney injury due to persistent inflammation. Purinergic signaling by 5'-ectonucleotidase, CD73, an enzyme that converts AMP to adenosine on the extracellular surface, can suppress inflammation. The role of CD73 in progressive kidney fibrosis has not been elucidated. We evaluated the effect of deletion of CD73 from kidney perivascular cells (including pericytes and/or fibroblasts of the Foxd1+ lineage) on fibrosis. Perivascular cell expression of CD73 was necessary to suppress inflammation and prevent kidney fibrosis in Foxd1CreCD73fl/fl mice evaluated 14 days after unilateral ischemia-reperfusion injury or folic acid treatment (250 mg/kg). Kidneys of Foxd1CreCD73fl/fl mice had greater collagen deposition, expression of proinflammatory markers (including various macrophage markers), and platelet-derived growth factor recepetor-β immunoreactivity than CD73fl/fl mice. Kidney dysfunction and fibrosis were rescued by administration of soluble CD73 or by macrophage deletion. Isolated CD73-/- kidney pericytes displayed an activated phenotype (increased proliferation and α-smooth muscle actin mRNA expression) compared with wild-type controls. In conclusion, CD73 in perivascular cells may act to suppress myofibroblast transformation and influence macrophages to promote a wound healing response. These results suggest that the purinergic signaling pathway in the kidney interstitial microenvironment orchestrates perivascular cells and macrophages to suppress inflammation and prevent progressive fibrosis.
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MESH Headings
- 5'-Nucleotidase/deficiency
- 5'-Nucleotidase/genetics
- 5'-Nucleotidase/metabolism
- Actins/metabolism
- Animals
- Cell Proliferation
- Cells, Cultured
- Cellular Microenvironment
- Collagen/metabolism
- Disease Models, Animal
- Fibroblasts/metabolism
- Fibroblasts/pathology
- Fibrosis
- Forkhead Transcription Factors/genetics
- Forkhead Transcription Factors/metabolism
- GPI-Linked Proteins/deficiency
- GPI-Linked Proteins/genetics
- GPI-Linked Proteins/metabolism
- Inflammation Mediators/metabolism
- Kidney/immunology
- Kidney/metabolism
- Kidney/pathology
- Macrophages/metabolism
- Macrophages/pathology
- Male
- Mice, 129 Strain
- Mice, Inbred C57BL
- Mice, Knockout
- Nephritis, Interstitial/genetics
- Nephritis, Interstitial/immunology
- Nephritis, Interstitial/metabolism
- Nephritis, Interstitial/pathology
- Pericytes/metabolism
- Pericytes/pathology
- Receptor, Platelet-Derived Growth Factor beta/metabolism
- Reperfusion Injury/genetics
- Reperfusion Injury/immunology
- Reperfusion Injury/metabolism
- Reperfusion Injury/pathology
- Signal Transduction
- Wound Healing
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Affiliation(s)
- Heather M Perry
- Division of Nephrology and Center for Immunity, Inflammation and Regenerative Medicine, University of Virginia, Charlottesville, Virginia
| | - Nicole Görldt
- Division of Nephrology and Center for Immunity, Inflammation and Regenerative Medicine, University of Virginia, Charlottesville, Virginia
- Institute of Molecular Cardiology, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Sun-Sang J Sung
- Division of Nephrology and Center for Immunity, Inflammation and Regenerative Medicine, University of Virginia, Charlottesville, Virginia
| | - Liping Huang
- Division of Nephrology and Center for Immunity, Inflammation and Regenerative Medicine, University of Virginia, Charlottesville, Virginia
| | - Kinga P Rudnicka
- Division of Nephrology and Center for Immunity, Inflammation and Regenerative Medicine, University of Virginia, Charlottesville, Virginia
| | - Iain M Encarnacion
- Division of Nephrology and Center for Immunity, Inflammation and Regenerative Medicine, University of Virginia, Charlottesville, Virginia
| | - Amandeep Bajwa
- Division of Nephrology and Center for Immunity, Inflammation and Regenerative Medicine, University of Virginia, Charlottesville, Virginia
| | - Shinji Tanaka
- Division of Nephrology and Center for Immunity, Inflammation and Regenerative Medicine, University of Virginia, Charlottesville, Virginia
| | - Nabin Poudel
- Division of Nephrology and Center for Immunity, Inflammation and Regenerative Medicine, University of Virginia, Charlottesville, Virginia
| | - Junlan Yao
- Division of Nephrology and Center for Immunity, Inflammation and Regenerative Medicine, University of Virginia, Charlottesville, Virginia
| | - Diane L Rosin
- Department of Pharmacology, University of Virginia, Charlottesville, Virginia
| | - Jürgen Schrader
- Institute of Molecular Cardiology, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Mark D Okusa
- Division of Nephrology and Center for Immunity, Inflammation and Regenerative Medicine, University of Virginia, Charlottesville, Virginia
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Abstract
Acute kidney injury (AKI), a major public health problem associated with high mortality and increased risk of progression towards end-stage renal disease, is characterized by the activation of intra-renal haemostatic and inflammatory processes. Platelets, which are present in high numbers in the circulation and can rapidly release a broad spectrum of bioactive mediators, are important acute modulators of inflammation and haemostasis, as they are the first cells to arrive at sites of acute injury, where they interact with endothelial cells and leukocytes. Diminished control of platelet reactivity by endothelial cells and/or an increased release of platelet-activating mediators can lead to uncontrolled platelet activation in AKI. As increased platelet sequestration and increased expression levels of the markers P-selectin, thromboxane A2, CC-chemokine ligand 5 and platelet factor 4 on platelets have been reported in kidneys following AKI, platelet activation likely plays a part in AKI pathology. Results from animal models and some clinical studies highlight the potential of antiplatelet therapies in the preservation of renal function in the context of AKI, but as current strategies also affect other cell types and non-platelet-derived mediators, additional studies are required to further elucidate the extent of platelet contribution to the pathology of AKI and to determine the best therapeutic approach by which to specifically target related pathogenic pathways.
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Affiliation(s)
- Marcel P B Jansen
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Sandrine Florquin
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Joris J T H Roelofs
- Department of Pathology, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.
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38
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Baek JH. The Impact of Versatile Macrophage Functions on Acute Kidney Injury and Its Outcomes. Front Physiol 2019; 10:1016. [PMID: 31447703 PMCID: PMC6691123 DOI: 10.3389/fphys.2019.01016] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 07/23/2019] [Indexed: 12/18/2022] Open
Abstract
Acute kidney injury (AKI) is a common and devastating clinical condition with a high morbidity and mortality rate and is associated with a rapid decline of kidney function mostly resulting from the injury of proximal tubules. AKI is typically accompanied by inflammation and immune activation and involves macrophages (Mϕ) from the beginning: The inflamed kidney recruits “classically” activated (M1) Mϕ, which are initially poised to destroy potential pathogens, exacerbating inflammation. Of note, they soon turn into “alternatively” activated (M2) Mϕ and promote immunosuppression and tissue regeneration. Based on their roles in kidney recovery, there is a growing interest to use M2 Mϕ and Mϕ-modulating agents therapeutically against AKI. However, it is pertinent to note that the clinical translation of Mϕ-based therapies needs to be critically reviewed and questioned since Mϕ are functionally plastic with versatile roles in AKI and some Mϕ functions are detrimental to the kidney during AKI. In this review, we discuss the current state of knowledge on the biology of different Mϕ subtypes during AKI and, especially, on their role in AKI and assess the impact of versatile Mϕ functions on AKI based on the findings from translational AKI studies.
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Affiliation(s)
- Jea-Hyun Baek
- Research & Early Development, Biogen Inc., Cambridge, MA, United States
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39
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Chen DQ, Feng YL, Chen L, Liu JR, Wang M, Vaziri ND, Zhao YY. Poricoic acid A enhances melatonin inhibition of AKI-to-CKD transition by regulating Gas6/AxlNFκB/Nrf2 axis. Free Radic Biol Med 2019; 134:484-497. [PMID: 30716432 DOI: 10.1016/j.freeradbiomed.2019.01.046] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 01/31/2019] [Accepted: 01/31/2019] [Indexed: 01/06/2023]
Abstract
Renal ischemia-reperfusion injury (IRI) is a complex syndrome, which causes chronic kidney disease (CKD) after recovery from IRI-mediated acute kidney injury (AKI). There is no single therapy that could effectively prevent the renal injury after ischemia. In this study, the effects of melatonin or poricoic acid A (PAA) and their combination were investigated in protecting against AKI-to-CKD transition in rats and hypoxia/reoxygenation (H/R)-induced injury in cultured renal NRK-52E cells. Melatonin and PAA significantly reduced the magnitude of rise in serum creatinine and urea levels in IRI rats at days 3 and 14. Our results further showed that treatment with melatonin and PAA ameliorated renal fibrosis and podocyte injury by attenuating oxidative stress and inflammation via regulation of nuclear factor-kappa B (NF-κB) and nuclear factor-erythroid-2-related factor 2 (Nrf2) pathways in IRI rats. Melatonin and PAA protected against AKI-to-CKD transition by regulating growth arrest-specific 6 (Gas6)/AxlNFκB/Nrf2 signaling cascade. Melatonin and PAA initiallyupregulated Gas6/Axl signaling to reduce oxidative stress and inflammation in AKI and subsequently downregulated Gas6/Axl signaling to attenuate renal fibrosis and progression to CKD. Melatonin and PAA inhibited expression of extracellular matrix proteins. Poricoic acid A enhances melatonin-mediated inhibition of AKI-to-CKD transition by the regulating Gas6/AxlNFκB/Nrf2 signaling cascade. Notably, our study first identified Axl as a promising therapeutic target for prevention of AKI-to-CKD transition.
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Affiliation(s)
- Dan-Qian Chen
- School of Pharmacy, Faculty of Life Science & Medicine, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi, 710069, China
| | - Ya-Long Feng
- School of Pharmacy, Faculty of Life Science & Medicine, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi, 710069, China
| | - Lin Chen
- School of Pharmacy, Faculty of Life Science & Medicine, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi, 710069, China
| | - Jing-Ru Liu
- School of Pharmacy, Faculty of Life Science & Medicine, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi, 710069, China
| | - Ming Wang
- School of Pharmacy, Faculty of Life Science & Medicine, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi, 710069, China
| | - Nosratola D Vaziri
- Division of Nephrology and Hypertension, School of Medicine, University of California Irvine, Irvine, CA, 92897, USA
| | - Ying-Yong Zhao
- School of Pharmacy, Faculty of Life Science & Medicine, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi, 710069, China.
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40
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Meng XM, Mak TSK, Lan HY. Macrophages in Renal Fibrosis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1165:285-303. [PMID: 31399970 DOI: 10.1007/978-981-13-8871-2_13] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Monocytes/macrophages are highly involved in the process of renal injury, repair and fibrosis in many aspects of experimental and human renal diseases. Monocyte-derived macrophages, characterized by high heterogeneity and plasticity, are recruited, activated, and polarized in the whole process of renal fibrotic diseases in response to local microenvironment. As classically activated M1 or CD11b+/Ly6Chigh macrophages accelerate renal injury by producing pro-inflammatory factors like tumor necrosis factor-alpha (TNFα) and interleukins, alternatively activated M2 or CD11b+/Ly6Cintermediate macrophages may contribute to kidney repair by exerting anti-inflammation and wound healing functions. However, uncontrolled M2 macrophages or CD11b+/Ly6Clow macrophages promote renal fibrosis via paracrine effects or direct transition to myofibroblast-like cells via the process of macrophage-to-myofibroblast transition (MMT). In this regard, therapeutic strategies targeting monocyte/macrophage recruitment, activation, and polarization should be emphasized in the treatment of renal fibrosis.
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Affiliation(s)
- Xiao-Ming Meng
- School of Pharmacy, Anhui Medical University, Hefei, 230032, Anhui, China
| | - Thomas Shiu-Kwong Mak
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, and Lui Chi Woo Institute of Innovative Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Hui-Yao Lan
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, and Lui Chi Woo Institute of Innovative Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China.
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41
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Rapamycin-inspired macrocycles with new target specificity. Nat Chem 2018; 11:254-263. [PMID: 30532015 PMCID: PMC6435255 DOI: 10.1038/s41557-018-0187-4] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 11/07/2018] [Indexed: 02/07/2023]
Abstract
Rapamycin and FK506 are macrocyclic natural products with an extraordinary mode of action—they form binary complexes with FKBP through a shared FKBP-binding domain before forming ternary complexes with their respective targets, mTOR and calcineurin, respectively. Inspired by this, we sought to build a rapamycin-like macromolecule library to target new cellular proteins by replacing the effector domain of rapamycin with a combinatorial library of oligopeptides. We developed a robust macrocyclization method using ring-closing metathesis and synthesized a 45,000-compound library of hybrid macrocycles that are named rapafucins using optimized FKBP-binding domains. Screening of the rapafucin library in human cells led to the discovery of rapadocin, an inhibitor of nucleoside uptake. Rapadocin is a potent, isoform-specific and FKBP-dependent inhibitor of the equilibrative nucleoside transporter 1 and is efficacious in an animal model of kidney ischemia reperfusion injury. Together, these results demonstrate that rapafucins are a new class of chemical probes and drug leads that can expand the repertoire of protein targets well beyond mTOR and calcineurin.
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42
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Chung S, Overstreet JM, Li Y, Wang Y, Niu A, Wang S, Fan X, Sasaki K, Jin GN, Khodo SN, Gewin L, Zhang MZ, Harris RC. TGF-β promotes fibrosis after severe acute kidney injury by enhancing renal macrophage infiltration. JCI Insight 2018; 3:123563. [PMID: 30385721 DOI: 10.1172/jci.insight.123563] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 09/19/2018] [Indexed: 12/28/2022] Open
Abstract
TGF-β signals through a receptor complex composed of 2 type I and 2 type II (TGF-βRII) subunits. We investigated the role of macrophage TGF-β signaling in fibrosis after AKI in mice with selective monocyte/macrophage TGF-βRII deletion (macrophage TGF-βRII-/- mice). Four weeks after injury, renal TGF-β1 expression and fibrosis were higher in WT mice than macrophage TGF-βRII-/- mice, which had decreased renal macrophages. The in vitro chemotactic response to f-Met-Leu-Phe was comparable between bone marrow-derived monocytes (BMMs) from WT and macrophage TGF-βRII-/- mice, but TGF-βRII-/- BMMs did not respond to TGF-β. We then implanted Matrigel plugs suffused with either f-Met-Leu-Phe or TGF-β1 into WT or macrophage TGF-βRII-/- mice. After 6 days, f-Met-Leu-Phe induced similar macrophage infiltration into the Matrigel plugs of WT and macrophage TGF-βRII-/- mice, but TGF-β induced infiltration only in WT mice. We further determined the number of labeled WT or TGF-βRII-/- BMMs infiltrating into WT kidneys 20 days after ischemic injury. There were more labeled WT BMMs than TGF-βRII-/- BMMs. Therefore, macrophage TGF-βRII deletion protects against the development of tubulointerstitial fibrosis following severe ischemic renal injury. Chemoattraction of macrophages to the injured kidney through a TGF-β/TGF-βRII axis is a heretofore undescribed mechanism by which TGF-β can mediate renal fibrosis during progressive renal injury.
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Affiliation(s)
- Sungjin Chung
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jessica M Overstreet
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Yan Li
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Yinqiu Wang
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Aolei Niu
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Suwan Wang
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Xiaofeng Fan
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Kensuke Sasaki
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Guan-Nan Jin
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Stellor Nlandu Khodo
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Leslie Gewin
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Ming-Zhi Zhang
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Raymond C Harris
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.,Department of Veterans Affairs, Nashville, Tennessee, USA
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43
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Sato Y, Yanagita M. Immune cells and inflammation in AKI to CKD progression. Am J Physiol Renal Physiol 2018; 315:F1501-F1512. [PMID: 30156114 DOI: 10.1152/ajprenal.00195.2018] [Citation(s) in RCA: 150] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Acute kidney injury (AKI) is a common clinical state resulting from pathogenic conditions such as ischemic and toxic insults. The pathophysiology of AKI shares common pathogenic denominators including cell death/injury, inflammation, and fibrosis, regardless of the initiating insults. Recent clinical studies have shown that a single episode of AKI can lead to subsequent chronic kidney disease (CKD). Although the involvement of multiple types of cells in the pathophysiology of AKI is becoming increasingly clear, the precise mechanisms for this "AKI to CKD progression" are still unknown, and no drug has been shown to halt this progression. An increasing number of epidemiological studies have also revealed that the presence of aging greatly increases the risk of AKI to CKD progression, and chronic inflammation is increasingly recognized as an important determinant factor for this progression. In this review article, we first describe the current understanding of the pathophysiology of AKI to CKD progression based on multiple types of cells. In particular, we will highlight the recent findings in regard to the mechanisms for chronic inflammation after AKI. Subsequently, we will focus on the mechanisms responsible for the increased risk of AKI to CKD progression in the elderly. Finally, we highlight our recent finding of age-dependent tertiary lymphoid tissue formation and its roles in AKI to CKD progression and speculate on the potential therapeutic opportunities that come from targeting aberrant inflammation after AKI.
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Affiliation(s)
- Yuki Sato
- Medical Innovation Center TMK Project, Graduate School of Medicine, Kyoto University , Kyoto , Japan.,Department of Nephrology, Graduate School of Medicine, Kyoto University , Kyoto , Japan
| | - Motoko Yanagita
- Department of Nephrology, Graduate School of Medicine, Kyoto University , Kyoto , Japan
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Viehmann SF, Böhner AM, Kurts C, Brähler S. The multifaceted role of the renal mononuclear phagocyte system. Cell Immunol 2018; 330:97-104. [DOI: 10.1016/j.cellimm.2018.04.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 04/16/2018] [Accepted: 04/20/2018] [Indexed: 12/15/2022]
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Abu Alfeilat M, Slotki I, Shavit L. Single emergency room measurement of neutrophil/lymphocyte ratio for early detection of acute kidney injury (AKI). Intern Emerg Med 2018; 13:717-725. [PMID: 28756545 DOI: 10.1007/s11739-017-1715-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 07/24/2017] [Indexed: 12/11/2022]
Abstract
Neutrophil-to-lymphocyte ratio (NLR) is considered a readily available biomarker of systemic inflammation. An association between elevated NLR and adverse outcomes in a variety of medical and surgical conditions including CKD has been demonstrated in several studies. In this study, we evaluated the accuracy of single Emergency Department (ED) measurement of NLR for early diagnosis of acute kidney injury (AKI). We prospectively studied 294 patients aged 71.6 ± 17. We measured NLR at presentation to the ED. AKI is defined as a new-onset 1.5-fold or more increase in serum creatinine or a 25% decrease in estimated GFR sustained for at least 3 days despite volume resuscitation. The primary outcome is AKI. Secondary outcome is in-hospital mortality. A multivariate model and ROC analysis were performed to evaluate the association and eventual predictive capacity of NLR for the outcomes. 36 patients (12.2%) developed AKI and 26 (9%) died, 8 (22%) of the AKI group and 17 patients (7%) of the non-AKI group. The Mean NLR is significantly higher in AKI compare to non-AKI patients (11.7 ± 15.2 vs 6.45 ± 7.19, p = 0.048). A multivariate model adjusted for age, gender, blood pressure, plasma albumin and hemoglobin levels confirms that the NLR is higher in AKI patients (p = 0.031). Receiver operating characteristics curve reveals an AUC of 0.715 (95% CI 0.63-0.8) sensitivity 0.78, specificity 0.65, and OR 6.423 (CI 2.659-16.026) for a cutoff value of NLR 5.5. The relation between NLR and in-hospital mortality is not statistically significant (p = 0.92). Single ED measurement of NLR might be a useful tool for early diagnosis of AKI. This finding is particularly important in light of the low cost and widespread availability of NLR, especially compared with other biomarkers currently under study in the context of AKI.
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Affiliation(s)
- Mohsen Abu Alfeilat
- Adult Nephrology Unit, Division of Adult Nephrology, Shaare Zedek Medical Center, PO Box 3235, 91031, Jerusalem, Israel.
| | - Itzchak Slotki
- Adult Nephrology Unit, Division of Adult Nephrology, Shaare Zedek Medical Center, PO Box 3235, 91031, Jerusalem, Israel
| | - Linda Shavit
- Adult Nephrology Unit, Division of Adult Nephrology, Shaare Zedek Medical Center, PO Box 3235, 91031, Jerusalem, Israel
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Liu L, Wu X, Xu H, Yu L, Zhang X, Li L, Jin J, Zhang T, Xu Y. Myocardin-related transcription factor A (MRTF-A) contributes to acute kidney injury by regulating macrophage ROS production. Biochim Biophys Acta Mol Basis Dis 2018; 1864:3109-3121. [PMID: 29908908 DOI: 10.1016/j.bbadis.2018.05.026] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 05/11/2018] [Accepted: 05/31/2018] [Indexed: 11/17/2022]
Abstract
A host of pathogenic factors induce acute kidney injury (AKI) leading to insufficiencies of renal function. In the present study we evaluated the role of myocardin-related transcription factor A (MRTF-A) in the pathogenesis of AKI. We report that systemic deletion of MRTF-A or inhibition of MRTF-A activity with CCG-1423 significantly attenuated AKI in mice induced by either ischemia-reperfusion or LPS injection. Of note, MRTF-A deficiency or suppression resulted in diminished renal ROS production in AKI models with down-regulation of NAPDH oxdiase 1 (NOX1) and NOX4 expression. In cultured macrophages, MRTF-A promoted NOX1 transcription in response to either hypoxia-reoxygenation or LPS treatment. Interestingly, macrophage-specific MRTF-A deletion ameliorated AKI in mice. Mechanistic analyses revealed that MRTF-A played a role in regulating histone H4K16 acetylation surrounding the NOX gene promoters by interacting with the acetyltransferase MYST1. MYST1 depletion repressed NOX transcription in macrophages. Finally, administration of a MYST1 inhibitor MG149 alleviated AKI in mice. Therefore, we data illustrate a novel epigenetic pathway that controls ROS production in macrophages contributing to AKI. Targeting the MRTF-A-MYST1-NOX axis may yield novel therapeutic strategies to combat AKI.
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Affiliation(s)
- Li Liu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Xiaoyan Wu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Huihui Xu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Liming Yu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Xinjian Zhang
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Luyang Li
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China
| | - Jianliang Jin
- Department of Anatomy and Histology, Nanjing Medical University, Nanjing, China
| | - Tao Zhang
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China; Department of Renal Medicine, Jiangsu Remin Hospital affiliated to Nanjing Medical University, Nanjing, China.
| | - Yong Xu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease and Collaborative Innovation Center for Cardiovascular Translational Medicine, Department of Pathophysiology, Nanjing Medical University, Nanjing, China.
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Saito H, Tanaka T, Tanaka S, Higashijima Y, Yamaguchi J, Sugahara M, Ito M, Uchida L, Hasegawa S, Wakashima T, Fukui K, Nangaku M. Persistent expression of neutrophil gelatinase-associated lipocalin and M2 macrophage markers and chronic fibrosis after acute kidney injury. Physiol Rep 2018; 6:e13707. [PMID: 29845768 PMCID: PMC5974714 DOI: 10.14814/phy2.13707] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 04/17/2018] [Accepted: 04/20/2018] [Indexed: 01/10/2023] Open
Abstract
Recent epidemiologic studies revealed a correlation between acute kidney injury (AKI) episodes and the progression to chronic kidney disease (CKD). Although the severity and duration of the initial insult likely predict the development of CKD, information regarding tissue markers predictive of early development of renal fibrosis is limited. We investigated key markers in fibrotic kidney in rats and mice. Seven- to eight-week-old male Sprague-Dawley rats underwent bilateral ischemia-reperfusion injury (IRI). Kidney tissues were collected to determine the markers correlated with the severity of kidney fibrosis. In a separate set, a specific chemokine (C-C motif) receptor 2 (CCR2) inhibitor, RS-102895, was administered to 9-week-old male C57BL/6J mice that underwent unilateral IRI (9.2 mg/kg/day in drinking water for 17 days) to investigate whether blockade of the monocyte chemotactic protein-1 (MCP-1) signaling was sufficient to prevent fibrosis. Among candidate tissue markers, neutrophil gelatinase-associated lipocalin (NGAL) and MCP-1 mRNA expressions were correlated with kidney fibrosis. Studies on macrophage polarity showed that mRNA expression of M2, but not M1 macrophage markers, were correlated with acute-phase serum creatinine and fibrosis. Pharmacological blockade of the MCP-1-CCR2 signaling downregulated CCR2, which was insufficient to improve fibrosis in mouse unilateral IRI model, suggesting that additional, redundant pathways contribute to fibrosis. These findings suggested that tissue NGAL expression and M2 macrophage markers are promising markers that show severity of kidney fibrosis. Mechanistic involvement of these markers in CKD pathogenesis warrant additional investigation.
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Affiliation(s)
- Hisako Saito
- Division of Nephrology and Endocrinologythe University of Tokyo Graduate School of MedicineTokyoJapan
| | - Tetsuhiro Tanaka
- Division of Nephrology and Endocrinologythe University of Tokyo Graduate School of MedicineTokyoJapan
| | - Shinji Tanaka
- Division of Nephrology and Endocrinologythe University of Tokyo Graduate School of MedicineTokyoJapan
| | - Yoshiki Higashijima
- Division of Nephrology and Endocrinologythe University of Tokyo Graduate School of MedicineTokyoJapan
| | - Junna Yamaguchi
- Division of Nephrology and Endocrinologythe University of Tokyo Graduate School of MedicineTokyoJapan
| | - Mai Sugahara
- Division of Nephrology and Endocrinologythe University of Tokyo Graduate School of MedicineTokyoJapan
| | - Marie Ito
- Division of Nephrology and Endocrinologythe University of Tokyo Graduate School of MedicineTokyoJapan
| | - Lisa Uchida
- Division of Nephrology and Endocrinologythe University of Tokyo Graduate School of MedicineTokyoJapan
| | - Sho Hasegawa
- Division of Nephrology and Endocrinologythe University of Tokyo Graduate School of MedicineTokyoJapan
| | - Takeshi Wakashima
- Division of Nephrology and Endocrinologythe University of Tokyo Graduate School of MedicineTokyoJapan
| | - Kenji Fukui
- Division of Nephrology and Endocrinologythe University of Tokyo Graduate School of MedicineTokyoJapan
| | - Masaomi Nangaku
- Division of Nephrology and Endocrinologythe University of Tokyo Graduate School of MedicineTokyoJapan
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Inoue T. M1 macrophage triggered by Mincle leads to a deterioration of acute kidney injury. Kidney Int 2018; 91:526-529. [PMID: 28202166 DOI: 10.1016/j.kint.2016.11.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 11/25/2016] [Accepted: 11/29/2016] [Indexed: 10/20/2022]
Abstract
In the early stage of acute kidney injury, M1 macrophages are proinflammatory and destructive. In this study, Lv et al. reveal that Mincle (macrophage-inducible C-type lectin, Clec4e) is expressed on M1 macrophages in acute kidney injury, and the kidney is protected in a murine model of cisplatin-induced renal injury by inhibiting Mincle expression on macrophages. Mincle expression is regulated by Toll-like receptor 4/nuclear factor κB signaling, and Mincle maintains the inflammatory phenotype through spleen tyrosine kinase signaling, leading to acute kidney injury.
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Affiliation(s)
- Tsuyoshi Inoue
- Division of Nephrology and Center for Immunity, Inflammation, and Regenerative Medicine, University of Virginia, Charlottesville, Virginia, USA.
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49
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Li Q, Zheng M, Liu Y, Sun W, Shi J, Ni J, Wang Q. A pathogenetic role for M1 macrophages in peritoneal dialysis-associated fibrosis. Mol Immunol 2018; 94:131-139. [PMID: 29306153 DOI: 10.1016/j.molimm.2017.12.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 11/06/2017] [Accepted: 12/25/2017] [Indexed: 01/08/2023]
Abstract
Peritoneal fibrosis (PF) is a frequent complication of peritoneal dialysis (PD) accompanied by the infiltration of inflammatory cells. Recently, the function of macrophages in an inflammatory microenvironment during PD remains unknown. This study aimed to elucidate the role of distinct macrophage phenotypes in the progression of PF through macrophage depletion in a peritoneal dialysis-induced mouse model. After injection of 200 μl liposomal clodronate (LC) at the start of instillation PD fluids (PDFs), mice were injected with 100 μL LC every 4 days after the first time injection for longer macrophage depletion, while control mice were co-treated with PBS liposomes. For macrophages transfusion,primary macrophages (M0) were stimulated into M1 and M2 macrophages and transfuritoneal fibrosis (PF) is a frequent complication of peritoneal dialysis (PD) accompanied by the infiltration of inflammatory cells. Recently, the function of macrophages in an inflammatory microenvironment during PD remains unknown. This study aimed to elucidate the role of distinct macrophage phenotypes in the progression of PF through macrophage depletion in a peritoneal dialysis-induced mouse model. After injection of 200 μl liposomal clodronate (LC) at the start of instillation PD fluids (PDFs), mice were injected with 100 μL LC every 4 days after the first time injection for longer macrophage depletion, while control mice were co-treated with PBS liposomes. For macrophages transfusion,primary macrophages (M0) were stimulated into M1 and M2 macrophages and transfused into the mice the next day after each LC injection. Mice were sacrificed after 6 weeks of PDFs treatment for the assessment of histological changes, ECM deposition and peritoneal ultrafiltration function. Systemic monocyte/macrophage depletion resulted in less severe structural alterations, including thickening and cubic transformation of mesothelial cells, fibrin deposition, fibrous capsule formation, and interstitial fibrosis. A strong reduction of alpha-smooth muscle actin (α-SMA) and fibronectin expression, as well as an increased E-cadherin expression was also observed, indicating an overall inhibition of peritoneal fibrosis in macrophages depletion mice.M1 macrophage reperfusion showed a significant increase in histological damages, ECM deposition and peritoneal ultrafiltration functional decline compared with those of the M2 and control groups. TLR4 expression was enhanced in M1 macrophage-treated group. These results suggest that M1 macrophages are an important mediator of peritoneal fibrosis.
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Affiliation(s)
- Qing Li
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Min Zheng
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Yueheng Liu
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Wei Sun
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Jun Shi
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Jie Ni
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Qiong Wang
- Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinese Medicine, Nanjing, China.
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50
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Nozaki Y, Hino S, Ri J, Sakai K, Nagare Y, Kawanishi M, Niki K, Funauchi M, Matsumura I. Lipopolysaccharide-Induced Acute Kidney Injury Is Dependent on an IL-18 Receptor Signaling Pathway. Int J Mol Sci 2017; 18:E2777. [PMID: 29261164 PMCID: PMC5751375 DOI: 10.3390/ijms18122777] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 12/14/2017] [Accepted: 12/14/2017] [Indexed: 12/15/2022] Open
Abstract
The proinflammatory cytokine interleukin (IL)-18 is an important mediator of the organ failure induced by endotoxemia. IL-18 (known as an interferon-gamma (IFN-γ) inducing factor), and other inflammatory cytokines have important roles in lipopolysaccharide (LPS)-induced acute kidney injury (AKI). We investigated the effect of inflammatory cytokines and Toll-like receptor 4 (TLR4) expression, an event that is accompanied by an influx of monocytes, including CD4⁺ T cells and antigen-presenting cells (APCs) in IL-18Rα knockout (KO) mice and wild-type (WT) mice after LPS injection. In the acute advanced phase, the IL-18Rα KO mice showed a higher survival rate and a suppressed increase of blood urea nitrogen, increased levels of proinflammatory cytokines such as IFN-γ and IL-18, the infiltration of CD4⁺ T cells and the expression of kidney injury molecule-1 as an AKI marker. In that phase, the renal mRNA expression of the M1 macrophage phenotype and C-C chemokine receptor type 7 as the maturation marker of dendritic cells (DCs) was also significantly decreased in the IL-18Rα KO mice, although there were small numbers of F4/80⁺ cells and DCs in the kidney. Conversely, there were no significant differences in the expressions of mRNA and protein TLR4 after LPS injection between the WT and IL-18Rα KO groups. Our results demonstrated that the IL-18Rα-mediated signaling pathway plays critical roles in CD4⁺ T cells and APCs and responded more quickly to IFN-γ and IL-18 than TLR4 stimulation in the pathogenesis of LPS-induced AKI.
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Affiliation(s)
- Yuji Nozaki
- Department of Hematology and Rheumatology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka 589-8511, Japan.
| | - Shoichi Hino
- Department of Hematology and Rheumatology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka 589-8511, Japan.
| | - Jinhai Ri
- Department of Hematology and Rheumatology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka 589-8511, Japan.
| | - Kenji Sakai
- Department of Hematology and Rheumatology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka 589-8511, Japan.
| | - Yasuaki Nagare
- Department of Hematology and Rheumatology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka 589-8511, Japan
| | - Mai Kawanishi
- Department of Hematology and Rheumatology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka 589-8511, Japan.
| | - Kaoru Niki
- Department of Hematology and Rheumatology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka 589-8511, Japan.
| | - Masanori Funauchi
- Department of Hematology and Rheumatology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka 589-8511, Japan.
| | - Itaru Matsumura
- Department of Hematology and Rheumatology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka 589-8511, Japan.
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