101
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Li Y, Zhai P, Zheng Y, Zhang J, Kellum JA, Peng Z. Csf2 Attenuated Sepsis-Induced Acute Kidney Injury by Promoting Alternative Macrophage Transition. Front Immunol 2020; 11:1415. [PMID: 32733471 PMCID: PMC7358306 DOI: 10.3389/fimmu.2020.01415] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 06/02/2020] [Indexed: 12/12/2022] Open
Abstract
Sepsis is a systemic inflammatory state that occurs in response to infection and significantly increases mortality in combination with acute kidney injury (AKI). Macrophages accumulate in the kidney after injury and undergo a transition from a proinflammatory (M1) phenotype to an alternatively activated (M2) phenotype that is required for normal repair. However, the specific signals that regulate the transition from the M1 to M2 phenotype in vivo are unknown. Here, we found an unexpected role of Colony stimulating factor 2 (Csf2) in controlling macrophage transition in vitro and in a mouse model of sepsis induced by cecal ligation and puncture (CLP). We first co-cultured human M1 macrophages with HK-2 cells and characterized cytokine/chemokine profiles via Luminex. Of the cytokines and chemokines that were overexpressed in medium from M1 macrophages cocultured with human kidney-2 (HK-2) cells compared with that from M1 macrophages cultured alone, Csf2 and IL6 showed the greatest increases. Csf2 was exclusively secreted by HK-2 cells but not by M1 macrophages. Furthermore, recombinant human Csf2 protein promoted transition of M1 macrophages to the M2 phenotype in a dose and time-dependent manner. The apoptosis and reactive oxygen species (ROS) release induced by M1 macrophages in HK-2 cells was attenuated after exposure to exogenous Csf2. In addition, the switch from the proinflammatory M1 phenotype to the M2 phenotype occurred via the p-Stat5 pathway, which was activated by Csf2. Importantly, we found that intraperitoneal injection of a Csf2-neutralizing antibody after CLP aggravated kidney injury and suppressed tubular proliferation, subsequently decreasing survival. However, administration of recombinant mouse Csf2 protein could rescue mice with sepsis. Together, our results indicate that Csf2 plays critical roles in regulating macrophage transition via activation of p-STAT5. These data form a foundation upon which new therapeutic strategies can be designed to improve the therapeutic efficacy of cytokine-based treatments for sepsis-induced AKI.
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Affiliation(s)
- Yiming Li
- Department of Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Pan Zhai
- Department of Neurology, Hubei Province Hospital of Tradition Chinese Medicine, Wuhan, China
| | - Yawen Zheng
- Department of Urological Organ Transplantation, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Jing Zhang
- Department of Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - John A Kellum
- Center of Critical Care Nephrology, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Zhiyong Peng
- Department of Critical Care Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China.,Center of Critical Care Nephrology, Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
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102
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Asaronic Acid Inhibited Glucose-Triggered M2-Phenotype Shift Through Disrupting the Formation of Coordinated Signaling of IL-4Rα-Tyk2-STAT6 and GLUT1-Akt-mTOR-AMPK. Nutrients 2020; 12:nu12072006. [PMID: 32640667 PMCID: PMC7400890 DOI: 10.3390/nu12072006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/21/2020] [Accepted: 07/03/2020] [Indexed: 12/12/2022] Open
Abstract
Macrophage polarization has been implicated in the pathogenesis of metabolic diseases such as obesity, diabetes, and atherosclerosis. Macrophages responsiveness to polarizing signals can result in their functional phenotype shifts. This study examined whether high glucose induced the functional transition of M2 macrophages, which was inhibited by asaronic acid, one of purple perilla constituents. J774A.1 murine macrophages were incubated with 40 ng/mL interleukin (IL)-4 or exposed to 33 mM glucose in the presence of 1-20 μΜ asaronic acid. In macrophages treated with IL-4 for 48 h, asaronic acid further accelerated cellular induction of the M2 markers of IL-10, arginase-1, CD163, and PPARγ via increased IL-4-IL-4Rα interaction and activated Tyk2-STAT6 pathway. Asaronic acid promoted angiogenic and proliferative capacity of M2-polarized macrophages, through increasing expression of VEGF, PDGF, and TGF-β. In glucose-loaded macrophages, there was cellular induction of IL-4, IL-4 Rα, arginase-1, and CD163, indicating that high glucose skewed naïve macrophages toward M2 phenotypes via an IL-4-IL-4Rα interaction. However, asaronic acid inhibited M2 polarization in diabetic macrophages in parallel with inactivation of Tyk2-STAT6 pathway and blockade of GLUT1-mediated metabolic pathway of Akt-mTOR-AMPKα. Consequently, asaronic acid deterred functional induction of COX-2, CTGF, α-SMA, SR-A, SR-B1, and ABCG1 in diabetic macrophages with M2 phenotype polarity. These results demonstrated that asaronic acid allayed glucose-activated M2-phenotype shift through disrupting coordinated signaling of IL-4Rα-Tyk2-STAT6 in parallel with GLUT1-Akt-mTOR-AMPK pathway. Thus, asaronic acid has therapeutic potential in combating diabetes-associated inflammation, fibrosis, and atherogenesis through inhibiting glucose-evoked M2 polarization.
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103
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Yuan C, Yang D, Ma J, Yang J, Xue J, Song F, Liu X. Modulation of Wnt/β-catenin signaling in IL-17A-mediated macrophage polarization of RAW264.7 cells. ACTA ACUST UNITED AC 2020; 53:e9488. [PMID: 32578719 PMCID: PMC7307890 DOI: 10.1590/1414-431x20209488] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 05/04/2020] [Indexed: 12/24/2022]
Abstract
Macrophages play pivotal roles in host defense and immune homeostasis, which have
two major functional polarization states, the classically activated M1 and the
alternatively activated M2. Interleukin (IL)-17A is an immune modulator able to
shape macrophage phenotypes. Wnt/β-catenin is a developmental signaling pathway
that plays crucial roles in morphogenesis and tissue homeostasis, which has also
been recently demonstrated playing roles in immune regulation. A growing amount
of evidence suggests that both Wnt and IL-17A signaling are involved in
macrophage polarization. However, their interaction in macrophage polarization
remains elusive. The aim of present study was to explore impacts of
Wnt/β-catenin on IL-17A-mediated macrophage M1/M2 polarization in murine
monocyte/macrophage-like cell line RAW264.7. Results revealed that IL-17A
activated Wnt/β-catenin signaling and induced macrophage M1 polarization, but
inhibited M2 polarization. In contrast, the activation of Wnt/β-catenin
signaling led to the inhibition of M1 macrophage polarization but the promotion
of M2 polarization. Importantly, the activation of Wnt/β-catenin also showed
abilities to inhibit the IL-17A-induced M1 macrophage polarization while
diminishing the IL-17A-inhibited M2 polarization. Molecular analysis further
uncovered that the JAK/STAT signaling pathway was involved in the interaction of
Wnt/β-catenin and IL-17A in the modulation of macrophage polarization. These
results suggested that the Wnt/β-catenin signaling modulated IL-17A-altered
macrophage polarization in part by regulating the JAK/STAT signaling pathway.
This study thus revealed a novel function of Wnt/β-catenin signaling in
regulating IL-17A-altered macrophage polarization.
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Affiliation(s)
- Chao Yuan
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Yinchuan, China.,College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Dandan Yang
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Yinchuan, China.,College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Jia Ma
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Yinchuan, China.,College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Jiali Yang
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Yinchuan, China.,College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Jing Xue
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Yinchuan, China.,College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Fuyang Song
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Yinchuan, China.,College of Life Science, Ningxia University, Yinchuan, Ningxia, China
| | - Xiaoming Liu
- Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, Yinchuan, China.,College of Life Science, Ningxia University, Yinchuan, Ningxia, China.,Department of Anatomy and Cell Biology, University of Iowa, Iowa City, IA, USA
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104
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Li M, Jiang M, Meng J, Tao L. Exosomes: Carriers of Pro-Fibrotic Signals and Therapeutic Targets in Fibrosis. Curr Pharm Des 2020; 25:4496-4509. [PMID: 31814552 DOI: 10.2174/1381612825666191209161443] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 12/03/2019] [Indexed: 02/06/2023]
Abstract
Exosomes are nano-sized extracellular vesicles that are released by a variety of cells. Exosomes contain cargo from cells they derived, including lipids, proteins and nucleic acids. The bilayer lipid membrane structure of exosomes protects these contents from degradation, allowing them for intercellular communication. The role of exosomes in fibrotic diseases is increasingly being valued. Exosomes, as carriers of profibrotic signals, are involved in the development of fibrotic diseases, and also regulate fibrosis by transmitting signals that inhibit fibrosis or inflammation. Exosomes mobilize and activate a range of effector cells by targeted delivery of bioactive information. Exosomes can also reflect the condition of cells, tissues and organisms, and thus become potential biomarkers of fibrotic diseases. Exosomes from bone marrow stem cells support biological signaling that regulates and inhibits fibrosis and thus initially used in the treatment of fibrotic diseases. This article briefly summarizes the role of exosomes in the pathogenesis and treatment of fibrotic diseases and raises some issues that remain to be resolved.
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Affiliation(s)
- Mengyu Li
- Department of Respiratory and Critical Care Medicine, Xiangya Hospital, Central South University, 932 Lushans Rd, Yuela, Changsha, Hunan, China.,Organ Fibrosis Research Center, Central South University, 932 Lushans Rd, Yuela, Changsha, Hunan, China
| | - Mao Jiang
- Department of Respiratory and Critical Care Medicine, Xiangya Hospital, Central South University, 932 Lushans Rd, Yuela, Changsha, Hunan, China.,Organ Fibrosis Research Center, Central South University, 932 Lushans Rd, Yuela, Changsha, Hunan, China
| | - Jie Meng
- Department of Respiratory and Critical Care Medicine, Xiangya Hospital, Central South University, 932 Lushans Rd, Yuela, Changsha, Hunan, China.,Organ Fibrosis Research Center, Central South University, 932 Lushans Rd, Yuela, Changsha, Hunan, China
| | - Lijian Tao
- Organ Fibrosis Research Center, Central South University, 932 Lushans Rd, Yuela, Changsha, Hunan, China.,Department of Nephrology, Xiangya Hospital, Central South University, 932 Lushans Rd, Yuela, Changsha, Hunan, China
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105
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Jin J, Zhao Q. Emerging role of mTOR in tumor immune contexture: Impact on chemokine-related immune cells migration. Theranostics 2020; 10:6231-6244. [PMID: 32483450 PMCID: PMC7255024 DOI: 10.7150/thno.45219] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 04/17/2020] [Indexed: 12/27/2022] Open
Abstract
During the last few decades, cell-based anti-tumor immunotherapy emerged and it has provided us with a large amount of knowledge. Upon chemokines recognition, immune cells undergo rapid trafficking and activation in disease milieu, with immune cells chemotaxis being accompanied by activation of diverse intercellular signal transduction pathways. The outcome of chemokines-mediated immune cells chemotaxis interacts with the cue of mammalian target of rapamycin (mTOR) in the tumor microenvironment (TME). Indeed, the mTOR cascade in immune cells involves migration and infiltration. In this review, we summarize the available mTOR-related chemokines, as well as the characterized upstream regulators and downstream targets in immune cells chemotaxis and assign potential underlying mechanisms in each evaluated chemokine. Specifically, we focus on the involvement of mTOR in chemokine-mediated immune related cells in the balance between tumor immunity and malignancy.
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Affiliation(s)
- Jing Jin
- Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P.R. China
| | - Qijie Zhao
- Laboratory of Molecular Pharmacology, Southwest Medical University, Luzhou, 646000, Sichuan, PR China
- Department of Pathophysiology, College of Basic Medical Science, Southwest Medical University, Luzhou, 646000, Sichuan, PR China
- South Sichuan Institute of Translational Medicine, Luzhou, 646000, Sichuan, PR China
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106
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Mejia-Vilet JM, Zhang XL, Cruz C, Cano-Verduzco ML, Shapiro JP, Nagaraja HN, Morales-Buenrostro LE, Rovin BH. Urinary Soluble CD163: a Novel Noninvasive Biomarker of Activity for Lupus Nephritis. J Am Soc Nephrol 2020; 31:1335-1347. [PMID: 32300067 DOI: 10.1681/asn.2019121285] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 03/03/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Clinical distinction between patients with lupus nephritis who have active inflammation or chronic kidney damage is challenging. Studies have shown soluble CD163, which derives from cleavage of the CD163 M2c macrophage receptor and can be quantified in urine, correlates with active lupus nephritis. METHODS We measured urine CD163 at lupus nephritis flares in patients from a Mexican cohort and cross-sectional and longitudinal United States cohorts. We also performed serial urine CD163 measurements during the treatment of flares in a subset of patients from the Mexican and longitudinal United States cohorts, and assessed response to therapy at 12 months. In addition, we evaluated urinary CD163 agreement with histologic activity in 19 patients from the Mexican cohort who had repeated kidney biopsies on follow-up. RESULTS Urinary CD163 levels were significantly higher in patients with active lupus nephritis than in patients with active extrarenal SLE, inactive SLE, and other glomerular diseases, and correlated with disease clinical severity, histologic class, and the histologic activity index. Urinary CD163 increased from 6 months preflare to flare, diminishing progressively in complete and partial responders, whereas it remained elevated in nonresponders. Urinary CD163 <370 ng/mmol at 6 months predicted complete renal response at 12 months with >87% sensitivity and >87% specificity. Urinary CD163 <370 ng/mmol or >370 ng/mmol perfectly agreed (κ=1.0) with a histologic activity index ≤1 or >1 in repeated biopsies, respectively. Evaluation of urinary CD163 in patients with persistent proteinuria at 6 months improved the prediction of who would achieve complete renal response at 12 months. CONCLUSIONS Urinary CD163 reflects histologic inflammation in lupus nephritis and is a promising activity biomarker that varies over time with lupus nephritis activity and treatment.
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Affiliation(s)
- Juan M Mejia-Vilet
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, Mexico City, Mexico
| | - Xiaolan L Zhang
- Division of Nephrology, Department of Internal Medicine, Davis Heart and Lung Research Institute, The Ohio State University Medical Center, Columbus, Ohio
| | - Cristino Cruz
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, Mexico City, Mexico
| | - Mayra L Cano-Verduzco
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, Mexico City, Mexico
| | - John P Shapiro
- Division of Nephrology, Department of Internal Medicine, Davis Heart and Lung Research Institute, The Ohio State University Medical Center, Columbus, Ohio
| | - Haikady N Nagaraja
- Division of Biostatistics, The Ohio State University College of Public Health, Columbus, Ohio
| | - Luis E Morales-Buenrostro
- Department of Nephrology and Mineral Metabolism, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubiran, Mexico City, Mexico
| | - Brad H Rovin
- Division of Nephrology, Department of Internal Medicine, Davis Heart and Lung Research Institute, The Ohio State University Medical Center, Columbus, Ohio
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107
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Lung Transplantation Has a Strong Impact on the Distribution and Phenotype of Monocyte Subsets. Transplant Proc 2020; 52:958-966. [PMID: 32146023 DOI: 10.1016/j.transproceed.2020.01.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 01/23/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Lung transplantation (LTx) is a last treatment option for patients with an end-stage pulmonary disease. Chronic lung allograft dysfunction, which generally manifests as bronchiolitis obliterans syndrome (BOS), is a major long-term survival limitation. During injury, inflammation and BOS monocytes are recruited. We determined whether changes in count, subset distribution, and functionality by surface marker expression coincided with BOS development. METHODS Fresh whole-blood samples were analyzed from 44 LTx patients, including 17 patients diagnosed with BOS, and compared with 10 age-matched healthy controls and 9 sarcoidosis patients as positive controls. Monocytes were quantified and analyzed using flow cytometry. Based on surface marker expression, classical, intermediate, and nonclassical subsets were determined, and functional phenotypes were investigated. RESULTS The absolute count of monocytes was decreased in LTx and slightly increased in BOS patients. The relative count shifted toward classical monocytes at the expense of nonclassical monocytes in LTx and BOS. Surface marker expression was highest on intermediate monocytes. The expression of both CD36 and CD163 was significantly increased in the LTx and BOS cohort. The difference between the BOS cohort and the LTx cohort was only subtle, with a significant decrease in HLA-DR expression on nonclassical monocytes in BOS. CONCLUSIONS Monocyte subsets and surface marker expression changed significantly in transplantation patients, while BOS-specific changes were understated. More research is needed to determine whether and how monocytes influence the disease process and how current immunosuppressants affect their normal function in vivo.
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108
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Eberhardson M, Tarnawski L, Centa M, Olofsson PS. Neural Control of Inflammation: Bioelectronic Medicine in Treatment of Chronic Inflammatory Disease. Cold Spring Harb Perspect Med 2020; 10:a034181. [PMID: 31358521 PMCID: PMC7050580 DOI: 10.1101/cshperspect.a034181] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Inflammation is important for antimicrobial defense and for tissue repair after trauma. The inflammatory response and its resolution are both active processes that must be tightly regulated to maintain homeostasis. Excessive inflammation and nonresolving inflammation cause tissue damage and chronic disease, including autoinflammatory and cardiovascular diseases. An improved understanding of the cellular and molecular mechanisms that regulate inflammation has supported development of novel therapies for several inflammatory diseases, including rheumatoid arthritis and inflammatory bowel disease. Many of the specific anticytokine therapies carry a risk for excessive immunosuppression and serious side effects. The discovery of the inflammatory reflex and the increasingly detailed understanding of the molecular interactions between homeostatic neural reflexes and the immune system have laid the foundation for bioelectronic medicine in the field of inflammatory diseases. Neural interfaces and nerve stimulators are now being tested in human clinical trials and may, as the technology develops further, have advantages over conventional drugs in terms of better compliance, continuously adaptable control of dosing, better monitoring, and reduced risks for unwanted side effects. Here, we review the current mechanistic understanding of common autoinflammatory conditions, consider available therapies, and discuss the potential use of increasingly capable devices in the treatment of inflammatory disease.
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Affiliation(s)
- Michael Eberhardson
- Laboratory of Immunobiology, Center for Bioelectronic Medicine, Department of Medicine, Solna, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Laura Tarnawski
- Laboratory of Immunobiology, Center for Bioelectronic Medicine, Department of Medicine, Solna, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Monica Centa
- Laboratory of Immunobiology, Center for Bioelectronic Medicine, Department of Medicine, Solna, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Peder S Olofsson
- Laboratory of Immunobiology, Center for Bioelectronic Medicine, Department of Medicine, Solna, Karolinska Institutet, 17177 Stockholm, Sweden
- Center for Biomedical Science, The Feinstein Institute for Medical Research, Northwell Health, Manhasset, New York 11030
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109
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Schreurs I, Meek B, van Moorsel C, van Kessel D, Luijk H, Grutters J. Monocyte derived macrophages from lung transplantation patients have an increased M2 profile. TRANSPLANTATION REPORTS 2020. [DOI: 10.1016/j.tpr.2019.100038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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110
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Abstract
Aim: Supplemental oxygen is often used to treat neonates with respiratory disorders. Human and animal studies have demonstrated that neonatal hyperoxia increases oxidative stress and induces damage and collagen deposition in kidney during the perinatal period. Cathelicidin LL-37 is one important group of human antimicrobial peptides which exhibits antioxidant activity and its overexpression resists hyperoxia-induced oxidative stress. This study was designed to evaluate the protective effects of cathelicidin in hyperoxia-induced kidney injury in newborn rats. Methods: Sprague-Dawley rat pups were reared in either room air (RA) or hyperoxia (85% O2) and were randomly treated with low-dose (4 mg/kg) and high-dose (8 mg/kg) cathelicidin in normal saline (NS) administered intraperitoneally on postnatal days 1–6. The following six groups were obtained: RA + NS, RA + low-dose cathelicidin, RA + high-dose cathelicidin, O2 + NS, O2 + low-dose cathelicidin, and O2 + high-dose cathelicidin. Kidneys were taken for Western blot and histological analyses on postnatal day 7. Results: The hyperoxia-reared rats exhibited significantly lower body weights and anti-inflammatory M2 macrophages, but the kidney injury scores, oxidative stress marker 8-hydroxy-2'-deoxyguanosine (8-OHdG)-positive cells, pro-inflammatory M1 macrophages, collagen deposition, and NF-κB expression were higher than did the RA-reared rats. Conclusions: Cathelicidin treatment attenuated kidney injury as evidenced by lower kidney injury scores, 8-OHdG-positive cells, collagen deposition, and reversion of hyperoxia-induced M1/M2 macrophage polarization. The role of Cathelicidin in ameliorates kidney injury of the hyperoxia newborn rats was accompanied by decreased NF-κB expression, which probably through the modulating NF-κB activity in the kidney.
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Affiliation(s)
- Hsiu-Chu Chou
- Department of Anatomy and Cellular Biology, School of Medicine, College of Medicine, Taipei Medical University , Taipei , Taiwan
| | - Chung-Ming Chen
- Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University , Taipei , Taiwan
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111
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de Bruin RG, Vogel G, Prins J, Duijs JMJG, Bijkerk R, van der Zande HJP, van Gils JM, de Boer HC, Rabelink TJ, van Zonneveld AJ, van der Veer EP, Richard S. Targeting the RNA-Binding Protein QKI in Myeloid Cells Ameliorates Macrophage-Induced Renal Interstitial Fibrosis. EPIGENOMES 2020; 4:epigenomes4010002. [PMID: 34968236 PMCID: PMC8594696 DOI: 10.3390/epigenomes4010002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 02/05/2020] [Accepted: 02/10/2020] [Indexed: 02/07/2023] Open
Abstract
In the pathophysiologic setting of acute and chronic kidney injury, the excessive activation and recruitment of blood-borne monocytes prompts their differentiation into inflammatory macrophages, a process that leads to progressive glomerulosclerosis and interstitial fibrosis. Importantly, this differentiation of monocytes into macrophages requires the meticulous coordination of gene expression at both the transcriptional and post-transcriptional level. The transcriptomes of these cells are ultimately determined by RNA-binding proteins such as QUAKING (QKI), that define their pre-mRNA splicing and mRNA transcript patterns. Using two mouse models, namely (1) quaking viable mice (qkv) and (2) the conditional deletion in the myeloid cell lineage using the lysozyme 2-Cre (QKIFL/FL;LysM-Cre mice), we demonstrate that the abrogation of QKI expression in the myeloid cell lineage reduces macrophage infiltration following kidney injury induced by unilateral urethral obstruction (UUO). The qkv and QKIFL/FL;LysM-Cre mice both showed significant diminished interstitial collagen deposition and fibrosis in the UUO-damaged kidney, as compared to wild-type littermates. We show that macrophages isolated from QKIFL/FL;LysM-Cre mice are associated with defects in pre-mRNA splicing. Our findings demonstrate that reduced expression of the alternative splice regulator QKI in the cells of myeloid lineage attenuates renal interstitial fibrosis, suggesting that inhibition of this splice regulator may be of therapeutic value for certain kidney diseases.
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Affiliation(s)
- Ruben G. de Bruin
- Einthoven Laboratory for Experimental Vascular Medicine, Division of Nephrology, Department of Internal Medicine, Leiden University Medical Center, Albinusdreef 2, C7-36, PO Box 9600, 2300RC Leiden, The Netherlands; (R.G.d.B.); (J.P.); (J.M.J.G.D.); (R.B.); (H.J.P.v.d.Z.); (J.M.v.G.); (H.C.d.B.); (T.J.R.); (A.J.v.Z.)
- Segal Cancer Center, Lady Davis Institute for Medical Research and Gerald Bronfman Department of Oncology and Departments of Biochemistry, Human Genetics and Medicine, McGill University, Montréal, QC H3T 1E2, Canada;
| | - Gillian Vogel
- Segal Cancer Center, Lady Davis Institute for Medical Research and Gerald Bronfman Department of Oncology and Departments of Biochemistry, Human Genetics and Medicine, McGill University, Montréal, QC H3T 1E2, Canada;
| | - Jurrien Prins
- Einthoven Laboratory for Experimental Vascular Medicine, Division of Nephrology, Department of Internal Medicine, Leiden University Medical Center, Albinusdreef 2, C7-36, PO Box 9600, 2300RC Leiden, The Netherlands; (R.G.d.B.); (J.P.); (J.M.J.G.D.); (R.B.); (H.J.P.v.d.Z.); (J.M.v.G.); (H.C.d.B.); (T.J.R.); (A.J.v.Z.)
| | - Jacques M. J. G. Duijs
- Einthoven Laboratory for Experimental Vascular Medicine, Division of Nephrology, Department of Internal Medicine, Leiden University Medical Center, Albinusdreef 2, C7-36, PO Box 9600, 2300RC Leiden, The Netherlands; (R.G.d.B.); (J.P.); (J.M.J.G.D.); (R.B.); (H.J.P.v.d.Z.); (J.M.v.G.); (H.C.d.B.); (T.J.R.); (A.J.v.Z.)
| | - Roel Bijkerk
- Einthoven Laboratory for Experimental Vascular Medicine, Division of Nephrology, Department of Internal Medicine, Leiden University Medical Center, Albinusdreef 2, C7-36, PO Box 9600, 2300RC Leiden, The Netherlands; (R.G.d.B.); (J.P.); (J.M.J.G.D.); (R.B.); (H.J.P.v.d.Z.); (J.M.v.G.); (H.C.d.B.); (T.J.R.); (A.J.v.Z.)
| | - Hendrik J. P. van der Zande
- Einthoven Laboratory for Experimental Vascular Medicine, Division of Nephrology, Department of Internal Medicine, Leiden University Medical Center, Albinusdreef 2, C7-36, PO Box 9600, 2300RC Leiden, The Netherlands; (R.G.d.B.); (J.P.); (J.M.J.G.D.); (R.B.); (H.J.P.v.d.Z.); (J.M.v.G.); (H.C.d.B.); (T.J.R.); (A.J.v.Z.)
| | - Janine M. van Gils
- Einthoven Laboratory for Experimental Vascular Medicine, Division of Nephrology, Department of Internal Medicine, Leiden University Medical Center, Albinusdreef 2, C7-36, PO Box 9600, 2300RC Leiden, The Netherlands; (R.G.d.B.); (J.P.); (J.M.J.G.D.); (R.B.); (H.J.P.v.d.Z.); (J.M.v.G.); (H.C.d.B.); (T.J.R.); (A.J.v.Z.)
| | - Hetty C. de Boer
- Einthoven Laboratory for Experimental Vascular Medicine, Division of Nephrology, Department of Internal Medicine, Leiden University Medical Center, Albinusdreef 2, C7-36, PO Box 9600, 2300RC Leiden, The Netherlands; (R.G.d.B.); (J.P.); (J.M.J.G.D.); (R.B.); (H.J.P.v.d.Z.); (J.M.v.G.); (H.C.d.B.); (T.J.R.); (A.J.v.Z.)
| | - Ton J. Rabelink
- Einthoven Laboratory for Experimental Vascular Medicine, Division of Nephrology, Department of Internal Medicine, Leiden University Medical Center, Albinusdreef 2, C7-36, PO Box 9600, 2300RC Leiden, The Netherlands; (R.G.d.B.); (J.P.); (J.M.J.G.D.); (R.B.); (H.J.P.v.d.Z.); (J.M.v.G.); (H.C.d.B.); (T.J.R.); (A.J.v.Z.)
| | - Anton Jan van Zonneveld
- Einthoven Laboratory for Experimental Vascular Medicine, Division of Nephrology, Department of Internal Medicine, Leiden University Medical Center, Albinusdreef 2, C7-36, PO Box 9600, 2300RC Leiden, The Netherlands; (R.G.d.B.); (J.P.); (J.M.J.G.D.); (R.B.); (H.J.P.v.d.Z.); (J.M.v.G.); (H.C.d.B.); (T.J.R.); (A.J.v.Z.)
| | - Eric P. van der Veer
- Einthoven Laboratory for Experimental Vascular Medicine, Division of Nephrology, Department of Internal Medicine, Leiden University Medical Center, Albinusdreef 2, C7-36, PO Box 9600, 2300RC Leiden, The Netherlands; (R.G.d.B.); (J.P.); (J.M.J.G.D.); (R.B.); (H.J.P.v.d.Z.); (J.M.v.G.); (H.C.d.B.); (T.J.R.); (A.J.v.Z.)
- Correspondence: (E.P.v.d.V.); (S.R.)
| | - Stéphane Richard
- Segal Cancer Center, Lady Davis Institute for Medical Research and Gerald Bronfman Department of Oncology and Departments of Biochemistry, Human Genetics and Medicine, McGill University, Montréal, QC H3T 1E2, Canada;
- Correspondence: (E.P.v.d.V.); (S.R.)
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112
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Disruption of CXCR6 Ameliorates Kidney Inflammation and Fibrosis in Deoxycorticosterone Acetate/Salt Hypertension. Sci Rep 2020; 10:133. [PMID: 31924817 PMCID: PMC6954216 DOI: 10.1038/s41598-019-56933-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 12/19/2019] [Indexed: 01/03/2023] Open
Abstract
Circulating cells have a pathogenic role in the development of hypertensive nephropathy. However, how these cells infiltrate into the kidney are not fully elucidated. In this study, we investigated the role of CXCR6 in deoxycorticosterone acetate (DOCA)/salt-induced inflammation and fibrosis of the kidney. Following uninephrectomy, wild-type and CXCR6 knockout mice were treated with DOCA/salt for 3 weeks. Blood pressure was similar between wild-type and CXCR6 knockout mice at baseline and after treatment with DOCA/salt. Wild-type mice develop significant kidney injury, proteinuria, and kidney fibrosis after three weeks of DOCA/salt treatment. CXCR6 deficiency ameliorated kidney injury, proteinuria, and kidney fibrosis following treatment with DOCA/salt. Moreover, CXCR6 deficiency inhibited accumulation of bone marrow–derived fibroblasts and myofibroblasts in the kidney following treatment with DOCA/salt. Furthermore, CXCR6 deficiency markedly reduced the number of macrophages and T cells in the kidney after DOCA/salt treatment. In summary, our results identify a critical role of CXCR6 in the development of inflammation and fibrosis of the kidney in salt-sensitive hypertension.
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Yao W, Guo A, Han X, Wu S, Chen C, Luo C, Li H, Li S, Hei Z. Aerosol inhalation of a hydrogen-rich solution restored septic renal function. Aging (Albany NY) 2019; 11:12097-12113. [PMID: 31841441 PMCID: PMC6949055 DOI: 10.18632/aging.102542] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 11/19/2019] [Indexed: 12/29/2022]
Abstract
Sepsis-related acute kidney injury (AKI) is known to be caused by inflammation. We explored the renal protective effects of aerosol inhalation of a hydrogen-rich solution (HRS; hydrogen gas dissolved to saturation in saline) in a mouse model of septic AKI. Septic AKI was induced through 18 hours of cecal ligation and puncture. AKI occurred during the early stage of sepsis, as evidenced by increased blood urea nitrogen and serum creatinine levels, pathological changes, renal fibrosis and renal tubular epithelial cell apoptosis, accompanied by macrophage infiltration and M1 macrophage-associated pro-inflammatory cytokine (Il-6 and Tnf-α) generation in renal tissues. Aerosol inhalation of the HRS increased anti-inflammatory cytokine (Il-4 and Il-13) mRNA levels in renal tissues and promoted macrophage polarization to the M2 type, which generated additional anti-inflammatory cytokines (Il-10 and Tgf-β). Ultimately, aerosol inhalation of HRS protected the kidneys and increased survival among septic mice. HRS was confirmed to promote M2 macrophage polarization in lipopolysaccharide-stimulated RAW 264.7 cells. The TGF-β1 receptor inhibitor SB-431542 partly reversed the effects of HRS on renal function, fibrosis, tubular epithelial cell apoptosis and senescence in mice. Thus, HRS aerosol inhalation appears highly useful for renal protection and inflammation reduction in septic AKI.
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Affiliation(s)
- Weifeng Yao
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Anshun Guo
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China.,Department of Anesthesiology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Xue Han
- Department of Anesthesiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510000, China
| | - Shan Wu
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Chaojin Chen
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Chenfang Luo
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Haobo Li
- Department of Anesthesiology, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524023, China
| | - Shangrong Li
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Ziqing Hei
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
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114
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Wang Y, Xing QQ, Tu JK, Tang WB, Yuan XN, Xie YY, Wang W, Peng ZZ, Huang L, Xu H, Qin J, Xiao XC, Tao LJ, Yuan QJ. Involvement of hydrogen sulfide in the progression of renal fibrosis. Chin Med J (Engl) 2019; 132:2872-2880. [PMID: 31856060 PMCID: PMC6940064 DOI: 10.1097/cm9.0000000000000537] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE Renal fibrosis is the most common manifestation of chronic kidney disease (CKD). Noting that existing treatments of renal fibrosis only slow disease progression but do not cure it, there is an urgent need to identify novel therapies. Hydrogen sulfide (H2S) is a newly discovered endogenous small gas signaling molecule exerting a wide range of biologic actions in our body. This review illustrates recent experimental findings on the mechanisms underlying the therapeutic effects of H2S against renal fibrosis and highlights its potential in future clinical application. DATA SOURCES Literature was collected from PubMed until February 2019, using the search terms including "Hydrogen sulfide," "Chronic kidney disease," "Renal interstitial fibrosis," "Kidney disease," "Inflammation factor," "Oxidative stress," "Epithelial-to-mesenchymal transition," "H2S donor," "Hypertensive kidney dysfunction," "Myofibroblasts," "Vascular remodeling," "transforming growth factor (TGF)-beta/Smads signaling," and "Sulfate potassium channels." STUDY SELECTION Literature was mainly derived from English articles or articles that could be obtained with English abstracts. Article type was not limited. References were also identified from the bibliographies of identified articles and the authors' files. RESULTS The experimental data confirmed that H2S is widely involved in various renal pathologies by suppressing inflammation and oxidative stress, inhibiting the activation of fibrosis-related cells and their cytokine expression, ameliorating vascular remodeling and high blood pressure, stimulating tubular cell regeneration, as well as reducing apoptosis, autophagy, and hypertrophy. Therefore, H2S represents an alternative or additional therapeutic approach for renal fibrosis. CONCLUSIONS We postulate that H2S may delay the occurrence and progress of renal fibrosis, thus protecting renal function. Further experiments are required to explore the precise role of H2S in renal fibrosis and its application in clinical treatment.
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Affiliation(s)
- Yu Wang
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Qi-Qi Xing
- Division of Orthopedics, Department of Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Jing-Ke Tu
- Regenerative Medicine Clinic, Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300041, China
| | - Wen-Bin Tang
- Division of Nephrology, Department of Internal Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Xiang-Ning Yuan
- Division of Nephrology, Department of Internal Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Yan-Yun Xie
- Division of Nephrology, Department of Internal Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Wei Wang
- Division of Nephrology, Department of Internal Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Zhang-Zhe Peng
- Division of Nephrology, Department of Internal Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Ling Huang
- Division of Nephrology, Department of Internal Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Hui Xu
- Division of Nephrology, Department of Internal Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Jiao Qin
- Division of Nephrology, Department of Internal Medicine, Changsha Central Hospital, Changsha, Hunan 410008, China
| | - Xiang-Cheng Xiao
- Division of Nephrology, Department of Internal Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Li-Jian Tao
- Division of Nephrology, Department of Internal Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Qiong-Jing Yuan
- Division of Nephrology, Department of Internal Medicine, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
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Bhatia D, Chung KP, Nakahira K, Patino E, Rice MC, Torres LK, Muthukumar T, Choi AM, Akchurin OM, Choi ME. Mitophagy-dependent macrophage reprogramming protects against kidney fibrosis. JCI Insight 2019; 4:132826. [PMID: 31639106 DOI: 10.1172/jci.insight.132826] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 10/16/2019] [Indexed: 12/27/2022] Open
Abstract
Mitophagy, by maintaining mitochondrial quality control, plays a key role in maintaining kidney function and is impaired in pathologic states. Macrophages are well known for their pathogenic role in kidney fibrosis. Here, we report that PINK1/Parkin-mediated mitophagy in macrophages is compromised in experimental and human kidney fibrosis. We demonstrate downregulation of mitophagy regulators mitofusin-2 (MFN2) and Parkin downstream of PINK1 in kidney fibrosis. Loss of either Pink1 or Prkn promoted renal extracellular matrix accumulation and frequency of profibrotic/M2 macrophages. Pink1-/- or Prkn-/- BM-derived macrophages (BMDMs) showed enhanced expression of rictor. Mitochondria from TGF-β1-treated Pink1-/- BMDMs exhibited increased superoxide levels, along with reduced respiration and ATP production. In addition, mitophagy in macrophages involves PINK1-mediated phosphorylation of downstream MFN2, MFN2-facilitated recruitment of Parkin to damaged mitochondria, and macrophage-specific deletion of Mfn2 aggravates kidney fibrosis. Moreover, mitophagy regulators were downregulated in human CKD kidney and TGF-β1-treated human renal macrophages, whereas Mdivi1 treatment suppressed mitophagy mediators and promoted fibrotic response. Taken together, our study is the first to our knowledge to demonstrate that macrophage mitophagy plays a protective role against kidney fibrosis via regulating the PINK1/MFN2/Parkin-mediated pathway.
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Affiliation(s)
| | - Kuei-Pin Chung
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, New York, USA.,National Taiwan University Hospital, Taipei, Taiwan
| | - Kiichi Nakahira
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, New York, USA
| | | | | | - Lisa K Torres
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, New York, USA
| | - Thangamani Muthukumar
- Division of Nephrology and Hypertension and.,NewYork-Presbyterian Hospital, New York, New York, USA
| | - Augustine Mk Choi
- Division of Pulmonary and Critical Care Medicine, Joan and Sanford I. Weill Department of Medicine, Weill Cornell Medicine, New York, New York, USA.,NewYork-Presbyterian Hospital, New York, New York, USA
| | - Oleh M Akchurin
- NewYork-Presbyterian Hospital, New York, New York, USA.,Division of Pediatric Nephrology, Department of Pediatrics, Weill Cornell Medicine, New York, New York, USA
| | - Mary E Choi
- Division of Nephrology and Hypertension and.,NewYork-Presbyterian Hospital, New York, New York, USA
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Motavalli R, Etemadi J, Kahroba H, Mehdizadeh A, Yousefi M. Immune system-mediated cellular and molecular mechanisms in idiopathic membranous nephropathy pathogenesis and possible therapeutic targets. Life Sci 2019; 238:116923. [DOI: 10.1016/j.lfs.2019.116923] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 09/16/2019] [Accepted: 09/29/2019] [Indexed: 12/21/2022]
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117
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Yeh HC, Ting IW, Huang HC, Chiang HY, Kuo CC. Acute Kidney Injury in the Outpatient Setting Associates with Risk of End-Stage Renal Disease and Death in Patients with CKD. Sci Rep 2019; 9:17658. [PMID: 31776433 PMCID: PMC6881443 DOI: 10.1038/s41598-019-54227-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 11/04/2019] [Indexed: 01/02/2023] Open
Abstract
Current acute kidney injury (AKI) diagnostic criteria are restricted to the inpatient setting. We proposed a new AKI diagnostic algorithm for the outpatient setting and evaluate whether outpatient AKI (AKIOPT) modifies the disease course among patients with chronic kidney disease (CKD) enrolled in the national predialysis registry. AKIOPT was detected when a 50% increase in serum creatinine level or 35% decline in eGFR was observed in the 180-day period prior to enrollment in the predialysis care program. Outcomes were progression to end-stage renal disease (ESRD) and all-cause mortality. Association analyses were performed using multiple Cox regression and coarsened exact matching (CEM) analysis. Among 6,046 patients, 31.5% (1,905 patients) had developed AKIOPT within the 180-day period before enrollment. The adjusted hazard ratios of the 1-year and overall risk of ESRD among patients with preceding AKIOPT compared with those without AKIOPT were 2.61 (95% CI: 2.15-3.18) and 1.97 (1.72-2.26), respectively. For 1-year and overall risk of all-cause mortality, patients with AKIOPT had respectively a 141% (95% CI: 89-209%) and 84% (56-117%) higher risk than those without AKIOPT. This statistical inference remained robust in CEM analysis. We also discovered a complete reversal in the eGFR slope before and after the AKIOPT from -10.61 ± 0.32 to 0.25 ± 0.30 mL/min/1.73 m2 per year; however, the loss of kidney function is not recovered. The new AKIOPT diagnostic algorithm provides prognostic insight in patients with CKD.
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Affiliation(s)
- Hung-Chieh Yeh
- AKI-CARE (Clinical Advancement, Research and Education) Center, Department of Internal Medicine, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan.,Division of Nephrology, Department of Internal Medicine, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan
| | - I-Wen Ting
- AKI-CARE (Clinical Advancement, Research and Education) Center, Department of Internal Medicine, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan.,Division of Nephrology, Department of Internal Medicine, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan
| | - Han-Chun Huang
- Big Data Center, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan
| | - Hsiu-Yin Chiang
- Big Data Center, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan
| | - Chin-Chi Kuo
- AKI-CARE (Clinical Advancement, Research and Education) Center, Department of Internal Medicine, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan. .,Division of Nephrology, Department of Internal Medicine, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan. .,Big Data Center, China Medical University Hospital and College of Medicine, China Medical University, Taichung, Taiwan. .,School of Medicine, College of Medicine, China Medical University, Taichung, Taiwan.
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118
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Freedman BI, Kistler AL, Skewes-Cox P, Ganem D, Spainhour M, Turner J, Divers J, Langefeld CD, Murea M, Hicks PJ, Hemal AK, Snipes JA, Zhao L, Abend JR, Lyles DS, Ma L, Skorecki KL. JC polyoma viruria associates with protection from chronic kidney disease independently from apolipoprotein L1 genotype in African Americans. Nephrol Dial Transplant 2019; 33:1960-1967. [PMID: 29420808 DOI: 10.1093/ndt/gfx368] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 12/14/2017] [Indexed: 12/18/2022] Open
Abstract
Background Viral infections can trigger chronic kidney disease (CKD) and the urine virome may inform risk. The Natural History of APOL1-Associated Nephropathy Study (NHAANS) reported that urine JC polyomavirus (JCPyV) associated with a lower risk of APOL1-associated nephropathy in African Americans. Herein, association was assessed between urine JCPyV with CKD in African Americans independent from the APOL1 genotype. Methods Quantitative polymerase chain reaction was performed for urinary detection of JCPyV and BK polyoma virus (BKPyV) in 200 newly recruited nondiabetic African Americans. A combined analysis was performed in these individuals plus 300 NHAANS participants. Results In the 200 new participants, urine JCPyV was present in 8.8% of CKD cases and 45.8% of nonnephropathy controls (P = 3.0 × 10-8). In those with APOL1 renal-risk genotypes, JCPyV was detected in 5.1% of cases and 40.0% of controls (P = 0.0002). In those lacking APOL1 renal-risk genotypes, JCPyV was detected in 12.2% of cases and 48.8% of controls (P = 8.5 × 10-5). BKPyV was detected in 1.3% of cases and 0.8% of controls (P = 0.77). In a combined analysis with 300 NHAANS participants (n = 500), individuals with urine JCPyV had a 63% lower risk of CKD compared with those without urine JCPyV (odds ratio 0.37; P = 4.6 × 10-6). RNA fluorescence in situ hybridization confirmed the presence of JCPyV genomic DNA and JCPyV messenger RNA (mRNA) in nondiseased kidney. Conclusions Inverse relationships exist between JCPyV viruria and non-diabetic CKD. Future studies should determine whether renal inflammation associated with CKD is less permissive for JCPyV reactivation/replication or whether JCPyV is a marker of reduced host immune responsiveness that diminishes immune pathologic contributions to CKD.
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Affiliation(s)
- Barry I Freedman
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - Amy L Kistler
- Infectious Diseases Area, Novartis Institutes for Biomedical Research, Emeryville, CA, USA
| | - Peter Skewes-Cox
- Infectious Diseases Area, Novartis Institutes for Biomedical Research, Emeryville, CA, USA
| | - Don Ganem
- Infectious Diseases Area, Novartis Institutes for Biomedical Research, Emeryville, CA, USA
| | - Mitzie Spainhour
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - Jolyn Turner
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - Jasmin Divers
- Department of Biostatistical Sciences, Division of Public Health Sciences, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - Carl D Langefeld
- Department of Biostatistical Sciences, Division of Public Health Sciences, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - Mariana Murea
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - Pamela J Hicks
- Department of Biochemistry, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - Ashok K Hemal
- Department of Urology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - James A Snipes
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - Lihong Zhao
- Infectious Diseases Area, Novartis Institutes for Biomedical Research, Emeryville, CA, USA
| | - Johanna R Abend
- Infectious Diseases Area, Novartis Institutes for Biomedical Research, Emeryville, CA, USA
| | - Douglas S Lyles
- Department of Biochemistry, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - Lijun Ma
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, USA
| | - Karl L Skorecki
- Department of Genetics and Developmental Biology, Rappaport Faculty of Medicine and Research Institute, Technion-Israel Institute of Technology and Department of Nephrology, Rambam Health Care Campus, Haifa, Israel
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119
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Xue C, Mei CL. Polycystic Kidney Disease and Renal Fibrosis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1165:81-100. [PMID: 31399962 DOI: 10.1007/978-981-13-8871-2_5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Polycystic kidney disease (PKD) is a common genetic disorder characterized by formations of numerous cysts in kidneys and most caused by PKD1 or PKD2 mutations in autosomal dominant polycystic kidney disease (ADPKD). The interstitial inflammation and fibrosis is one of the major pathological changes in polycystic kidney tissues with an accumulation of inflammatory cells, chemokines, and cytokines. The immune response is observed across different stages and occurs prior to or coincident with cyst formation in ADPKD. Evidence for inflammation as an important contributor to cyst growth and fibrosis includes increased interstitial macrophages, upregulated expressions of pro-inflammatory cytokines, activated complement system, and activated pathways including NF-κB and JAK-STAT signaling in polycystic kidney tissues. Inflammatory cells are responsible for overproduction of several pro-fibrotic growth factors which promote renal fibrosis in ADPKD. These growth factors trigger epithelial mesenchymal transition and myofibroblast/fibrocyte activation, which stimulate the expansion of extracellular matrix (ECM) including collagen I, III, IV, V, and fibronectin, leading to renal fibrosis and reduced renal function. Besides, there are imbalanced ECM turnover regulators which lead to the increased ECM production and inadequate degradation in polycystic kidney tissues. Several fibrosis associated signaling pathways, such as TGFβ-SMAD, Wnt, and periostin-integrin-linked kinase are also activated in polycystic kidney tissues. Although the effective anti-fibrotic treatments are limited at the present time, slowing the cyst expansion and fibrosis development is very important for prolonging life span and improving the palliative care of ADPKD patients. The inhibition of pro-fibrotic cytokines involved in fibrosis might be a new therapeutic strategy for ADPKD in the future.
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Affiliation(s)
- Cheng Xue
- Division of Nephrology, Kidney Institute of PLA, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Chang-Lin Mei
- Division of Nephrology, Kidney Institute of PLA, Changzheng Hospital, Second Military Medical University, Shanghai, China.
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Oh H, Park SH, Kang MK, Kim YH, Lee EJ, Kim DY, Kim SI, Oh S, Lim SS, Kang YH. Asaronic Acid Attenuates Macrophage Activation toward M1 Phenotype through Inhibition of NF-κB Pathway and JAK-STAT Signaling in Glucose-Loaded Murine Macrophages. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:10069-10078. [PMID: 31422663 DOI: 10.1021/acs.jafc.9b03926] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Macrophage polarization has been implicated in the pathogenesis of obesity and type 2 diabetes, which are recognized as chronic proinflammatory diseases. This study investigated that high level of glucose, similar to lipopolysaccharide (LPS), activated macrophages toward M1 phenotypes and 1-20 μM asaronic acid (AA) counteracted diabetic macrophage activation. AA reduced the LPS-promoted secretion of proinflammatory interleukin (IL)-6 and monocyte chemoattractant protein-1. The LPS markedly elevated the macrophage induction of the M1 markers of Toll-like receptor 4 (TLR4), CD36, and CD68, which was attenuated by AA. Also, the LPS significantly enhanced the nuclear factor (NF)-κB transactivation, signal transducers, and activators of transcription 1 (STAT1)/STAT3 activation and suppressor of cytokine signaling 3 (SOCS3) induction in macrophages. However, AA highly suppressed the aforementioned effects of LPS. Glucose-stimulated macrophages expressed advanced glycation end products (AGEs) and receptor for AGE (RAGE). Administration of 20 μM AA to macrophages partly but significantly attenuated such effects (1.65 ± 0.12 vs 0.95 ± 0.25 times glucose control for AGE; 2.33 ± 0.31 vs 1.40 ± 0.22 times glucose control for RAGE). Furthermore, glucose enhanced the macrophage induction of TLR4 and inducible nitric oxide synthase and IL-6 production, while it demoted the production of anti-inflammatory arginase-1 and IL-10. In contrast, AA reversed the induction of these markers in glucose-loaded macrophages. AA dose-dependently and significantly encumbered NF-κB transactivation, Janus kinase 2 (JAK2) and STAT1/STAT3 activation, and SOCS3 induction upregulated in glucose-supplemented macrophages. These results demonstrated for the first time that AA may limit diabetic macrophage activation toward the M1 phenotype through the inhibition of TLR4-/IL-6-mediated NF-κB/JAK2-STAT signaling entailing AGE-RAGE interaction.
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Affiliation(s)
- Hyeongjoo Oh
- Department of Food Science and Nutrition and Korea Nutrition Institute , Hallym University , Chuncheon 24252 , Korea
| | - Sin-Hye Park
- Department of Food Science and Nutrition and Korea Nutrition Institute , Hallym University , Chuncheon 24252 , Korea
| | - Min-Kyung Kang
- Department of Food Science and Nutrition and Korea Nutrition Institute , Hallym University , Chuncheon 24252 , Korea
| | - Yun-Ho Kim
- Department of Food Science and Nutrition and Korea Nutrition Institute , Hallym University , Chuncheon 24252 , Korea
| | - Eun-Jung Lee
- Department of Food Science and Nutrition and Korea Nutrition Institute , Hallym University , Chuncheon 24252 , Korea
| | - Dong Yeon Kim
- Department of Food Science and Nutrition and Korea Nutrition Institute , Hallym University , Chuncheon 24252 , Korea
| | - Soo-Il Kim
- Department of Food Science and Nutrition and Korea Nutrition Institute , Hallym University , Chuncheon 24252 , Korea
| | - SuYeon Oh
- Department of Food Science and Nutrition and Korea Nutrition Institute , Hallym University , Chuncheon 24252 , Korea
| | - Soon Sung Lim
- Department of Food Science and Nutrition and Korea Nutrition Institute , Hallym University , Chuncheon 24252 , Korea
| | - Young-Hee Kang
- Department of Food Science and Nutrition and Korea Nutrition Institute , Hallym University , Chuncheon 24252 , Korea
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Zhang X, Yang Y, Zhao Y. Macrophage phenotype and its relationship with renal function in human diabetic nephropathy. PLoS One 2019; 14:e0221991. [PMID: 31509552 PMCID: PMC6738594 DOI: 10.1371/journal.pone.0221991] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 05/30/2019] [Indexed: 12/30/2022] Open
Abstract
This study aimed to examine the macrophage phenotype and its relationship to renal function and histological changes in human DN and the effect of TREM-1 on high-glucose-induced macrophage activation. We observed that in renal tissue biopsies, the expression of CD68 and M1 was apparent in the glomeruli and interstitium, while accumulation of M2 and TREM-1 was primarily observed in the interstitium. The numbers of CD68, M1, and M2 macrophages infiltrating in the DN group were increased in a process-dependent manner compared with the control group, and the intensities of the infiltrates were proportional to the rate of subsequent decline in renal function. M1 macrophages were recruited into the kidney at an early stage (I+IIa) of DN. The M1-to-M2 macrophage ratio peaked at this time, whereas M2 macrophages predominated at later time points (III) when the percentage of M1/M2 macrophages was at its lowest level. In an in vitro study, we showed that under high glucose conditions, macrophages began to up-regulate their expression of TREM-1, M1, and marker iNOS and decreased the M2 marker MR. However, the above effects of high-glucose were abolished when TREM-1 expression was inhibited by TREM-1 siRNA. In conclusion, our study demonstrated that there was a positive correlation between the M1/M2 activation state and the progress of DN, and TREM-1 played an important role in high-glucose-induced macrophage phenotype transformation.
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Affiliation(s)
- Xiaoliang Zhang
- Institute of Nephrology, Zhong Da Hospital, Southeast University, School of Medicine, Nanjing, Jiangsu, China
- * E-mail:
| | - Ying Yang
- Institute of Nephrology, Zhong Da Hospital, Southeast University, School of Medicine, Nanjing, Jiangsu, China
| | - Yu Zhao
- Institute of Nephrology, Zhong Da Hospital, Southeast University, School of Medicine, Nanjing, Jiangsu, China
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Ren J, Zhang J, Rudemiller NP, Griffiths R, Wen Y, Lu X, Privratsky JR, Gunn MD, Crowley SD. Twist1 in Infiltrating Macrophages Attenuates Kidney Fibrosis via Matrix Metallopeptidase 13-Mediated Matrix Degradation. J Am Soc Nephrol 2019; 30:1674-1685. [PMID: 31315922 PMCID: PMC6727252 DOI: 10.1681/asn.2018121253] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 05/18/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Following an acute insult, macrophages regulate renal fibrogenesis through the release of various factors that either encourage the synthesis of extracellular matrix synthesis or the degradation of matrix via endocytosis, proteolysis, or both. However, the roles of infiltrating versus resident myeloid cells in these opposing processes require elucidation. The transcription factor Twist1 controls diverse essential cellular functions through induction of several downstream targets, including matrix metalloproteinases (MMPs). In macrophages, Twist1 can influence patterns of cytokine generation, but the role of macrophage Twist1 in renal fibrogenesis remains undefined. METHODS To study Twist1 functions in different macrophage subsets during kidney scar formation, we used two conditional mutant mouse models in which Twist1 was selectively ablated either in infiltrating, inflammatory macrophages or in resident tissue macrophages. We assessed fibrosis-related parameters, matrix metallopeptidase 13 (MMP13, or collagen 3, which catalyzes collagen degradation), inflammatory cytokines, and other factors in these Twist1-deficient mice compared with wild-type controls after subjecting the animals to unilateral ureteral obstruction. We also treated wild-type and Twist1-deficient mice with an MMP13 inhibitor after unilateral ureteral obstruction. RESULTS Twist1 in infiltrating inflammatory macrophages but not in resident macrophages limited kidney fibrosis after ureteral obstruction by driving extracellular matrix degradation. Moreover, deletion of Twist1 in infiltrating macrophages attenuated the expression of MMP13 in CD11b+Ly6Clo myeloid cells. Inhibition of MMP13 abrogated the protection from renal fibrosis afforded by macrophage Twist1. CONCLUSIONS Twist1 in infiltrating myeloid cells mitigates interstitial matrix accumulation in the injured kidney by promoting MMP13 production, which drives extracellular matrix degradation. These data highlight the complex cell-specific actions of Twist1 in the pathogenesis of kidney fibrosis.
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Affiliation(s)
- Jiafa Ren
- Divisions of Nephrology and
- Departments of Medicine and
| | | | | | | | - Yi Wen
- Divisions of Nephrology and
- Departments of Medicine and
| | - Xiaohan Lu
- Divisions of Nephrology and
- Departments of Medicine and
| | - Jamie R Privratsky
- Anesthesiology, Durham VA and Duke University Medical Centers, Durham, North Carolina
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Lu H, Cheng S, Wu C, Zheng S, Hong W, Liu L, Bai Y. Sedum sarmentosum Bunge extract alleviates inflammation and kidney injury via inhibition of M1-macrophage polarization. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 62:152976. [PMID: 31177020 DOI: 10.1016/j.phymed.2019.152976] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 05/27/2019] [Accepted: 05/30/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Sedum sarmentosum Bunge extract (SSBE) has been used traditionally to treat liver inflammatory diseases in the Asian area. PURPOSE The aim of this study is to evaluate the anti-inflammatory activity of SSBE on renal injury. METHODS We investigated whether SSBE has an anti-inflammatory effect by suppressing M1-macrophage polarization in rats with unilateral ureteral obstruction (UUO) and in cultured macrophages. In addition, the effect of SSBE on the activities of interferon regulatory factor-5 (IRF5) and NF-κB p65 were further examined. RESULTS Oral administration of SSBE (100 mg kg-1) markedly inhibited the infiltration of CD68-positive macrophages and reduced tubulointerstitial damage in kidney tissues following injury. In addition, SSBE reduced the expression of proinflammatory cytokine (MIF), chemokine (MCP-1), interleukin (IL-6), IFN-γ, and TNF-α, which are involved in the infiltration and activation of macrophages. Moreover, SSBE treatment also decreased the synthesis and release of MCP-1 and MIF in tubular epithelial cells after injury. Further study revealed that SSBE downregulated the levels of IL-12 and iNOS, indicating a crucial role of SSBE on the inhibition of M1 macrophage polarization in kidney injury. In cultured macrophages, lipopolysaccharide (LPS) induced the polarization of macrophage towards M1 phenotype, but was inhibited by SSBE treatment. Notably, SSBE reduced the activities of interferon regulatory factor 5 (IRF5) and NF-κB p65 in injured kidneys and in LPS-treated macrophages, which was independent of TLR4/MyD88. As a result, SSBE reduced the expression of HIF-1α and the induction of GLUT1, and thereby inhibited anaerobic glycolysis in macrophages. CONCLUSION SSBE exerts a marked anti-inflammatory effect and alleviates kidney injury, at least in part, by suppressing M1-macrophage polarization.
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Affiliation(s)
- Hong Lu
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China; Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Shuibing Cheng
- Department of Trauma Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Cunzao Wu
- Department of Transplantation, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Shizhang Zheng
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Weilong Hong
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Leping Liu
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Yongheng Bai
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.
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Cui J, Wu X, Song Y, Chen Y, Wan J. Complement C3 exacerbates renal interstitial fibrosis by facilitating the M1 macrophage phenotype in a mouse model of unilateral ureteral obstruction. Am J Physiol Renal Physiol 2019; 317:F1171-F1182. [PMID: 31461345 DOI: 10.1152/ajprenal.00165.2019] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The impact of the renal microenvironment on macrophage phenotype determination can contribute to the progression or resolution of renal fibrosis. Although the complement proteins affect macrophage polarization, whether complement component 3 (C3) can induce macrophage polarization and regulate renal interstitial fibrosis remains undetermined. In the present study, we investigated the contribution of C3 on macrophage polarization and renal fibrosis in C3-deficient mice with unilateral ureteral obstruction and bone marrow-derived macrophages. C3-deficient mice exhibited attenuated renal fibrosis and ameliorated peritubular capillary rarefaction. Lack of C3 contributed to M2 macrophage polarization, increased IL-10 and VEGF164, and decreased TNF-α and soluble VEGF receptor 1 expression in the obstructed kidneys at the early stages of unilateral ureteral obstruction. C3a facilitated LPS-induced M1 polarization and inflammatory factor production in bone marrow-derived macrophages in vitro, accompanied by increased ERK, NF-κB, and STAT1 phosphorylation. The ERK-specific inhibitor PD98059 inhibited the phosphorylation of ERK, NF-κB, and STAT1 and attenuated M1 polarization-related inflammatory factor production. Furthermore, the culture supernatant from M1 macrophages and C3a-treated M2 macrophages were more detrimental to angiogenesis compared with M2 macrophage supernatants. Thus, complement C3 exacerbates renal interstitial fibrosis by facilitating macrophage M1 polarization, promoting proinflammatory cytokine expression, and deteriorating peritubular capillary rarefaction in the kidney.
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Affiliation(s)
- Jiong Cui
- Department of Nephrology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Xiaoting Wu
- Department of Nephrology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Yankun Song
- Department of Pathology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Yi Chen
- Department of Nephrology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Jianxin Wan
- Department of Nephrology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
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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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126
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Hu W, Lin J, Lian X, Yu F, Liu W, Wu Y, Fang X, Liang X, Hao W. M2a and M2b macrophages predominate in kidney tissues and M2 subpopulations were associated with the severity of disease of IgAN patients. Clin Immunol 2019; 205:8-15. [PMID: 31078708 DOI: 10.1016/j.clim.2019.05.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 05/01/2019] [Accepted: 05/08/2019] [Indexed: 02/05/2023]
Abstract
M2 macrophages play important roles during the injury and repair phases in kidney. Our aims are to investigate the distribution of M2 subpopulations and the correlation with clinicopathological features of IgA nephropathy (IgAN) patients. In this study, renal samples from 49 IgAN patients were detected by immunofluorescence. The markers of M2 macrophages, including M2a (CD206+/CD68+), M2b (CD86+/CD68+) and M2c (CD163+/CD68+) were identified. We found M2a and M2b macrophages were the predominant subpopulations in kidney tissues of IgAN. M2a macrophages were mainly distributed in tubulointerstitium with renal lesions like segmental glomerulosclerosis and tubular atrophy/interstitial fibrosis. However, there were larger numbers of M2c in glomeruli with minor lesions. Moreover, M2a and M2c macrophages were inversely correlated with the clinical and pathologic features, respectively. These results suggest M2 subpopulations were involved in the progression of IgAN, and M2a and M2c macrophages might show different properties to participate in the pathogenesis of IgAN.
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Affiliation(s)
- Wenxue Hu
- Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Provincial Geriatrics Institute, Guangzhou 510080, China
| | - Jieshan Lin
- Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Provincial Geriatrics Institute, Guangzhou 510080, China; Shantou University Medical College, Shantou 515041, China
| | - Xingji Lian
- Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Provincial Geriatrics Institute, Guangzhou 510080, China
| | - Feng Yu
- Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Provincial Geriatrics Institute, Guangzhou 510080, China
| | - Wei Liu
- Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Provincial Geriatrics Institute, Guangzhou 510080, China
| | - Yanhua Wu
- Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Provincial Geriatrics Institute, Guangzhou 510080, China
| | - Xiaowu Fang
- Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Provincial Geriatrics Institute, Guangzhou 510080, China
| | - Xinling Liang
- Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Provincial Geriatrics Institute, Guangzhou 510080, China.
| | - Wenke Hao
- Department of Nephrology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangdong Provincial Geriatrics Institute, Guangzhou 510080, China.
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Nakazawa D, Marschner JA, Platen L, Anders HJ. Extracellular traps in kidney disease. Kidney Int 2019; 94:1087-1098. [PMID: 30466565 DOI: 10.1016/j.kint.2018.08.035] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 08/01/2018] [Accepted: 08/30/2018] [Indexed: 12/12/2022]
Abstract
During the past decade the formation of neutrophil extracellular traps (NETs) has been recognized as a unique modality of pathogen fixation (sticky extracellular chromatin) and pathogen killing (cytotoxic histones and proteases) during host defense, as well as collateral tissue damage. Numerous other triggers induce NET formation in multiple forms of sterile inflammation, including thrombosis, gout, obstruction of draining ducts, and trauma. Whether neutrophils always die along with NET release, and if they do die, how, remains under study and is most likely context dependent. In certain settings, neutrophils release NETs while undergoing regulated necrosis-for example, necroptosis. NETs and extracellular traps (ETs) released by macrophages also have been well documented in kidney diseases-for example, in various forms of acute kidney injury. Histones released from ETs and other sources are cytotoxic and elicit inflammation, contributing to necroinflammation of the early-injury phase of acute tubular necrosis in antineutrophil cytoplasmic antibody-related renal vasculitis, anti-glomerular basement membrane disease, lupus nephritis, and thrombotic microangiopathies. Finally, acute kidney injury-related releases of dying renal cells or ETs promote remote organ injuries-for example, acute respiratory distress syndrome. In this review, we summarize what is known about the release of ETs from neutrophils and macrophages in the kidney, the available experimental evidence, and ongoing discussions in the field.
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Affiliation(s)
- Daigo Nakazawa
- Division of Rheumatology, Endocrinology and Nephrology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Julian A Marschner
- Division of Nephrology, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Germany
| | - Louise Platen
- Division of Nephrology, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Germany
| | - Hans-Joachim Anders
- Division of Nephrology, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, LMU München, Germany.
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Ohara Y, Yabuki A, Nakamura R, Ichii O, Mizukawa H, Yokoyama N, Yamato O. Renal Infiltration of Macrophages in Canine and Feline Chronic Kidney Disease. J Comp Pathol 2019; 170:53-59. [PMID: 31375159 DOI: 10.1016/j.jcpa.2019.05.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/09/2019] [Accepted: 05/13/2019] [Indexed: 12/21/2022]
Abstract
During the progression of chronic kidney disease (CKD), macrophage infiltration is a crucial event leading to tubulointerstitial fibrosis. In the present study, macrophages infiltrating renal tissue in dogs and cats with CKD were analysed immunohistochemically. Iba-1 was used as a pan-macrophage marker, CD204 was used as a marker of M2 macrophages and tumour necrosis factor (TNF)-α was used as a marker of M1 macrophages. Signals for Iba1 and CD204 were observed in the interstitium of all tested kidney samples. In dogs, the signals were diffusely scattered. In cats, both diffuse and focal signals were observed. Cells that were positive for Iba1 and CD204 were also observed in the tubular lumina in cats. Co-expression of Iba1 and CD204 was also observed in the infiltrating cells by immunofluorescence labelling, and these cells were negative for TNF-α. By quantitative analysis, the indices for Iba1- and CD204-positive cells were significantly correlated with the concentrations of plasma creatinine and/or urea and the extent of interstitial fibrosis in both dogs and cats. These results demonstrated that renal infiltration of M2 macrophages plays an important role in the progression of CKD in dogs and cats. The distribution pattern of the kidney-infiltrating macrophages was unique in cats and may be associated with a cat-specific renal fibrotic process.
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Affiliation(s)
- Y Ohara
- Laboratory of Veterinary Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima
| | - A Yabuki
- Laboratory of Veterinary Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima.
| | - R Nakamura
- Laboratory of Veterinary Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima
| | - O Ichii
- Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo
| | - H Mizukawa
- Laboratory of Environmental Analytical Chemistry, Department of Science and Technology for Biological Resources and Environment, Graduate School of Agriculture, Ehime University, Matsuyama
| | - N Yokoyama
- Laboratory of Veterinary Internal Medicine, Department of Clinical Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - O Yamato
- Laboratory of Veterinary Clinical Pathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima
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Kruzel-Davila E, Divers J, Russell GB, Kra-Oz Z, Cohen MS, Langefeld CD, Ma L, Lyles DS, Hicks PJ, Skorecki KL, Freedman BI. JC Viruria Is Associated With Reduced Risk of Diabetic Kidney Disease. J Clin Endocrinol Metab 2019; 104:2286-2294. [PMID: 30715336 PMCID: PMC6489692 DOI: 10.1210/jc.2018-02482] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 01/25/2019] [Indexed: 11/19/2022]
Abstract
PURPOSE African Americans who shed JC polyomavirus (JCV) in their urine have reduced rates of nondiabetic chronic kidney disease (CKD). We assessed the associations between urinary JCV and urine BK polyomavirus (BKV) with CKD in African Americans with diabetes mellitus. METHODS African Americans with diabetic kidney disease (DKD) and controls lacking nephropathy from the Family Investigation of Nephropathy and Diabetes Consortium (FIND) and African American-Diabetes Heart Study (AA-DHS) had urine tested for JCV and BKV using quantitative PCR. Of the 335 individuals tested, 148 had DKD and 187 were controls. RESULTS JCV viruria was detected more often in the controls than in the patients with DKD (FIND: 46.6% vs 32.2%; OR, 0.52; 95% CI, 0.29 to 0.93; P = 0.03; AA-DHS: 30.4% vs 26.2%; OR, 0.63; 95% CI, 0.27 to 1.48; P = 0.29). A joint analysis adjusted for age, sex, and study revealed that JC viruria was inversely associated with DKD (OR, 0.56; 95% CI, 0.35 to 0.91; P = 0.02). Statistically significant relationships between BKV and DKD were not observed. MAIN CONCLUSIONS The results from the present study extend the inverse association between urine JCV and nondiabetic nephropathy in African Americans to DKD. These results imply that common pathways likely involving the innate immune system mediate coincident chronic kidney injury and restriction of JCV replication. Future studies are needed to explore causative pathways and characterize whether the absence of JC viruria can serve as a biomarker for DKD in the African American population.
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Affiliation(s)
- Etty Kruzel-Davila
- Department of Nephrology, Rambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion-Israel Institute of Technology, Haifa, Israel
| | - Jasmin Divers
- Division of Public Health Sciences, Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Gregory B Russell
- Division of Public Health Sciences, Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Zipi Kra-Oz
- Virology Laboratory, Rambam Health Care Campus, Haifa, Israel
| | | | - Carl D Langefeld
- Division of Public Health Sciences, Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Lijun Ma
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Douglas S Lyles
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Pamela J Hicks
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Karl L Skorecki
- Department of Nephrology, Rambam Health Care Campus and Rappaport Faculty of Medicine and Research Institute, Technion-Israel Institute of Technology, Haifa, Israel
- Azrieli Faculty of Medicine, Bar-Ilan University, Tzefat, Israel
- Correspondence and Reprint Requests: Karl. L. Skorecki, MD, Azrieli Faculty of Medicine, Bar-Ilan University, Henrietta Szold, 8, PO Box 1589, Galilee 1311502, Israel. E-mail: ; or Barry I. Freedman, MD, Section on Nephrology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina 27157-1053. E-mail:
| | - Barry I Freedman
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Winston-Salem, North Carolina
- Correspondence and Reprint Requests: Karl. L. Skorecki, MD, Azrieli Faculty of Medicine, Bar-Ilan University, Henrietta Szold, 8, PO Box 1589, Galilee 1311502, Israel. E-mail: ; or Barry I. Freedman, MD, Section on Nephrology, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, North Carolina 27157-1053. E-mail:
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Yang L, Yuan H, Yu Y, Yu N, Ling L, Niu J, Gu Y. Epidermal growth factor receptor mimotope alleviates renal fibrosis in murine unilateral ureteral obstruction model. Clin Immunol 2019; 205:57-64. [PMID: 31152892 DOI: 10.1016/j.clim.2019.05.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/24/2019] [Accepted: 05/28/2019] [Indexed: 01/13/2023]
Abstract
Macrophages have been recognized as a vital factor that can promote renal fibrosis. Previously we reported that the EGFR mimotope could alleviate the macrophage infiltration in the Sjögren's syndrome-like animal model. In current study, we sought to observe whether the active immunization induced by the EGFR mimotope could ameliorate renal fibrosis in the murine Unilateral Ureteral Obstruction (UUO) model. A series of experiments showed the EGFR mimotope immunization could ameliorate renal fibrosis, reduce the expressions of fibronectin, α-SMA and collagen I and alleviate the infiltrations of F4/80+ macrophages in UUO model. Meanwhile, the EGFR mimotope immunization could inhibit the EGFR downstream signaling. Additionally, the frequency of and F4/80+CD9+/FAS+ macrophages significantly increased in spleen after the EGFR mimotope immunization. These evidence suggested that the EGFR mimotope could alleviate renal fibrosis by both inhibiting EGFR signaling and promoting macrophages apoptosis.
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Affiliation(s)
- Lin Yang
- Department of Nephrology, Shanghai Fifth People's Hospital, Fudan University, No. 801, Heqing Road, Shanghai 200240, PR China
| | - Haoran Yuan
- Department of Central Laboratory, Shanghai Fifth People's Hospital, Fudan University, No. 801, Heqing Road, Shanghai 200240, PR China
| | - Ying Yu
- Department of Nephrology, Shanghai Fifth People's Hospital, Fudan University, No. 801, Heqing Road, Shanghai 200240, PR China
| | - Nan Yu
- Department of Nephrology, Shanghai Fifth People's Hospital, Fudan University, No. 801, Heqing Road, Shanghai 200240, PR China
| | - Lilu Ling
- Department of Nephrology, Shanghai Fifth People's Hospital, Fudan University, No. 801, Heqing Road, Shanghai 200240, PR China
| | - Jianying Niu
- Department of Nephrology, Shanghai Fifth People's Hospital, Fudan University, No. 801, Heqing Road, Shanghai 200240, PR China.
| | - Yong Gu
- Department of Nephrology, Shanghai Fifth People's Hospital, Fudan University, No. 801, Heqing Road, Shanghai 200240, PR China
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Nqebelele NU, Dickens C, Dix-Peek T, Duarte R, Naicker S. JC Virus and APOL1 Risk Alleles in Black South Africans With Hypertension-Attributed CKD. Kidney Int Rep 2019; 4:939-945. [PMID: 31317116 PMCID: PMC6611950 DOI: 10.1016/j.ekir.2019.05.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 05/10/2019] [Accepted: 05/13/2019] [Indexed: 01/13/2023] Open
Abstract
Introduction The polyomaviruses, John Cunningham (JC) and BK, infect humans, with primary infection occurring in childhood. First-degree relatives of African American individuals with nondiabetic chronic kidney disease (CKD) who had 2 apolipoprotein L1 (APOL1) risk variants had a lower prevalence of kidney disease in the presence of JC viruria. This study determined the prevalence of polyomavirus infections and their effects, in the presence APOL1 risk alleles, on CKD. Methods Sixty-four black South African individuals with hypertension-attributed CKD with an estimated glomerular filtration rate (eGFR) ≤60 ml/min per 1.73 m2, 44 first-degree relatives, and 56 unrelated controls were included. Viral DNA was extracted from urine and genomic DNA from blood using the Maxwell automated platform. Viral-load quantification was determined using Genesig polyomavirus kits. Genotyping of the APOL1 G1 and G2 variants was by polymerase chain reaction-restriction fragment length polymorphism. Results The prevalence of JC viruria was significantly higher in controls (36%) and first-degree relatives (20%) than in patients with CKD (3%, P < 0.001). Although patients with CKD and their first-degree relatives had similar socioeconomic status scores, we found a lower prevalence of JC viruria in patients with CKD compared with their first-degree relatives, who had normal kidney function. The absence of John Cunningham virus (JCV), DNA was a strong predictor of CKD (odds ratio [OR] 43.43; 95% confidence interval [CI] 7.39-255.20; P < 0.001). Conclusion There was a strong association between the absence of JC viruria and CKD. Studies with a larger sample are essential to determine the renoprotective effects of JCV and its interactions with APOL1.
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Affiliation(s)
- Nolubabalo U Nqebelele
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Caroline Dickens
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Therese Dix-Peek
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Raquel Duarte
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Saraladevi Naicker
- Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Droguett A, Valderrama G, Burgos ME, Carpio D, Saka C, Egido J, Ruiz-Ortega M, Mezzano S. Gremlin, A Potential Urinary Biomarker of Anca-Associated Crescentic Glomerulonephritis. Sci Rep 2019; 9:6867. [PMID: 31053735 PMCID: PMC6499786 DOI: 10.1038/s41598-019-43358-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 04/23/2019] [Indexed: 01/08/2023] Open
Abstract
Gremlin renal overexpression has been reported in diabetic nephropathy, pauci-immune crescentic glomerulonephritis and chronic allograft nephropathy and has been implicated in the pathophysiology of the progression of renal damage. However, it is unknown whether urinary Gremlin can be associated with renal functional status, renal biopsy findings and outcome. To examine these associations we studied 20 patients with ANCA+ renal vasculitis and very high urinary Gremlin (354 ± 76 ug/gCr), 86 patients with other glomerular diseases and moderately elevated urinary Gremlin (83 ± 14 ug/gCr) and 11 healthy controls (urinary Gremlin 11.3 ± 2.4 ug/gCr). Urinary Gremlin was significantly correlated with renal expression of Gremlin (r = 0.64, p = 0.013) observed in cellular glomerular crescents, tubular epithelial cells and interstitial inflammatory cells. Moreover, urinary Gremlin levels were correlated with the number of glomerular crescents (r = 0.53; p < 0.001), renal CD68 positive cells (r = 0.71; p < 0.005), tubulointerstitial fibrosis (r = 0.50; p < 0.05), and serum creatinine levels (r = 0.60; p < 0.001). Interestingly, Gremlin expression was colocalized with CD68, CD163 (monocyte/macrophage markers) and CCL18 positive cells. ROC curve analysis showed that the cutoff value of urinary Gremlin in glomerular diseases as 43 ug/gCr with 72% of sensitivity and 100% of specificity [AUC: 0.96 (CI 95% 0.92–0.99] (p < 0.001). For ANCA+ renal vasculitis the value of urinary Gremlin of 241 ug/gCr had 55% of sensitivity and 100% of specificity [AUC: 0.81 (CI 95% 0.68–0.94) (p < 0.001]. Based on these results we propose that urinary Gremlin represents a non-invasive biomarker in ANCA+ renal vasculitis, and suggest a role of Gremlin in the formation of crescents.
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Affiliation(s)
- Alejandra Droguett
- Nephrology Division, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
| | - Graciela Valderrama
- Nephrology Division, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
| | - María E Burgos
- Nephrology Division, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
| | - Daniel Carpio
- Nephrology Division, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
| | - Constanza Saka
- Nephrology Division, School of Medicine, Universidad Austral de Chile, Valdivia, Chile
| | - Jesús Egido
- Cellular Biology in Renal Disease Laboratory, Universidad Autónoma. IIS-Fundación Jiménez Díaz, Madrid, Spain
| | - Marta Ruiz-Ortega
- Cellular Biology in Renal Disease Laboratory, Universidad Autónoma. IIS-Fundación Jiménez Díaz, Madrid, Spain
| | - Sergio Mezzano
- Nephrology Division, School of Medicine, Universidad Austral de Chile, Valdivia, Chile.
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133
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Lim H, Heo MY, Kim HP. Flavonoids: Broad Spectrum Agents on Chronic Inflammation. Biomol Ther (Seoul) 2019; 27:241-253. [PMID: 31006180 PMCID: PMC6513185 DOI: 10.4062/biomolther.2019.034] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/02/2019] [Accepted: 04/04/2019] [Indexed: 12/17/2022] Open
Abstract
Flavonoids are major plant constituents with numerous biological/pharmacological actions both in vitro and in vivo. Of these actions, their anti-inflammatory action is prominent. They can regulate transcription of many proinflammatory genes such as cyclooxygenase-2/inducible nitric oxide synthase and many cytokines/chemokines. Recent studies have demonstrated that certain flavonoid derivatives can affect pathways of inflammasome activation and autophagy. Certain flavonoids can also accelerate the resolution phase of inflammation, leading to avoiding chronic inflammatory stimuli. All these pharmacological actions with newly emerging activities render flavonoids to be potential therapeutics for chronic inflammatory disorders including arthritic inflammation, meta-inflammation, and inflammaging. Recent findings of flavonoids are summarized and future perspectives are presented in this review.
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Affiliation(s)
- Hyun Lim
- College of Pharmacy, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Moon Young Heo
- College of Pharmacy, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Hyun Pyo Kim
- College of Pharmacy, Kangwon National University, Chuncheon 24341, Republic of Korea
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134
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Ishikawa Y, Fedeles S, Marlier A, Zhang C, Gallagher AR, Lee AH, Somlo S. Spliced XBP1 Rescues Renal Interstitial Inflammation Due to Loss of Sec63 in Collecting Ducts. J Am Soc Nephrol 2019; 30:443-459. [PMID: 30745418 PMCID: PMC6405156 DOI: 10.1681/asn.2018060614] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 01/07/2019] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND SEC63 encodes a resident protein in the endoplasmic reticulum membrane that, when mutated, causes human autosomal dominant polycystic liver disease. Selective inactivation of Sec63 in all distal nephron segments in embryonic mouse kidney results in polycystin-1-mediated polycystic kidney disease (PKD). It also activates the Ire1α-Xbp1 branch of the unfolded protein response, producing Xbp1s, the active transcription factor promoting expression of specific genes to alleviate endoplasmic reticulum stress. Simultaneous inactivation of Xbp1 and Sec63 worsens PKD in this model. METHODS We explored the renal effects of postnatal inactivation of Sec63 alone or with concomitant inactivation of Xbp1 or Ire1α, specifically in the collecting ducts of neonatal mice. RESULTS The later onset of inactivation of Sec63 restricted to the collecting duct does not result in overt activation of the Ire1α-Xbp1 pathway or cause polycystin-1-dependent PKD. Inactivating Sec63 along with either Xbp1 or Ire1α in this model causes interstitial inflammation and associated fibrosis with decline in kidney function over several months. Re-expression of XBP1s in vivo completely rescues the chronic kidney injury observed after inactivation of Sec63 with either Xbp1 or Ire1α. CONCLUSIONS In the absence of Sec63, basal levels of Xbp1s activity in collecting ducts is both necessary and sufficient to maintain proteostasis (protein homeostasis) and protect against inflammation, myofibroblast activation, and kidney functional decline. The Sec63-Xbp1 double knockout mouse offers a novel genetic model of chronic tubulointerstitial kidney injury, using collecting duct proteostasis defects as a platform for discovery of signals that may underlie CKD of disparate etiologies.
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Affiliation(s)
| | | | | | | | | | - Ann-Hwee Lee
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, New York, New York
| | - Stefan Somlo
- Departments of Internal Medicine and
- Genetics, Yale University School of Medicine, New Haven, Connecticut; and
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135
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Chen T, Cao Q, Wang Y, Harris DCH. M2 macrophages in kidney disease: biology, therapies, and perspectives. Kidney Int 2019; 95:760-773. [PMID: 30827512 DOI: 10.1016/j.kint.2018.10.041] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/10/2018] [Accepted: 10/18/2018] [Indexed: 12/13/2022]
Abstract
Tissue macrophages are crucial players in homeostasis, inflammation, and immunity. They are characterized by heterogeneity and plasticity, due to which they display a continuum of phenotypes with M1/M2 presenting 2 extremes of this continuum. M2 macrophages are usually termed in the literature as anti-inflammatory and wound healing. Substantial progress has been made in elucidating the biology of M2 macrophages and their potential for clinical translation. In this review we discuss the current state of knowledge in M2 macrophage research with an emphasis on kidney disease. We explore their therapeutic potential and the challenges in using them as cellular therapies. Some new regulators that shape macrophage polarization and potential areas for future research are also examined.
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Affiliation(s)
- Titi Chen
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia; Center for Transplant and Renal Research, Westmead Institute for Medical Research, Westmead, New South Wales, Australia; Department of Renal Medicine, Westmead Hospital, Westmead, New South Wales, Australia.
| | - Qi Cao
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia; Center for Transplant and Renal Research, Westmead Institute for Medical Research, Westmead, New South Wales, Australia
| | - Yiping Wang
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia; Center for Transplant and Renal Research, Westmead Institute for Medical Research, Westmead, New South Wales, Australia
| | - David C H Harris
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia; Center for Transplant and Renal Research, Westmead Institute for Medical Research, Westmead, New South Wales, Australia; Department of Renal Medicine, Westmead Hospital, Westmead, New South Wales, Australia
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136
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Hypoxia and Hypoxia-Inducible Factors in Kidney Injury and Repair. Cells 2019; 8:cells8030207. [PMID: 30823476 PMCID: PMC6468851 DOI: 10.3390/cells8030207] [Citation(s) in RCA: 161] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 02/21/2019] [Accepted: 02/25/2019] [Indexed: 02/07/2023] Open
Abstract
Acute kidney injury (AKI) is a major kidney disease characterized by an abrupt loss of renal function. Accumulating evidence indicates that incomplete or maladaptive repair after AKI can result in kidney fibrosis and the development and progression of chronic kidney disease (CKD). Hypoxia, a condition of insufficient supply of oxygen to cells and tissues, occurs in both acute and chronic kidney diseases under a variety of clinical and experimental conditions. Hypoxia-inducible factors (HIFs) are the "master" transcription factors responsible for gene expression in hypoxia. Recent researches demonstrate that HIFs play an important role in kidney injury and repair by regulating HIF target genes, including microRNAs. However, there are controversies regarding the pathological roles of HIFs in kidney injury and repair. In this review, we describe the regulation, expression, and functions of HIFs, and their target genes and related functions. We also discuss the involvement of HIFs in AKI and kidney repair, presenting HIFs as effective therapeutic targets.
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137
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Affiliation(s)
- Jiao Qin
- Department of Nephropathy, Changsha Central Hospital, Changsha, Hunan 410000, China
| | - Zhang-Zhe Peng
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Qian Li
- Department of Nephropathy, Changsha Central Hospital, Changsha, Hunan 410000, China
| | - Rui Wen
- Department of Nephropathy, Changsha Central Hospital, Changsha, Hunan 410000, China
| | - Li-Jian Tao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
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138
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Biglycan evokes autophagy in macrophages via a novel CD44/Toll-like receptor 4 signaling axis in ischemia/reperfusion injury. Kidney Int 2019; 95:540-562. [PMID: 30712922 DOI: 10.1016/j.kint.2018.10.037] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/09/2018] [Accepted: 10/24/2018] [Indexed: 01/14/2023]
Abstract
Biglycan, a small leucine-rich proteoglycan, acts as a danger signal and is classically thought to promote macrophage recruitment via Toll-like receptors (TLR) 2 and 4. We have recently shown that biglycan signaling through TLR 2/4 and the CD14 co-receptor regulates inflammation, suggesting that TLR co-receptors may determine whether biglycan-TLR signaling is pro- or anti-inflammatory. Here, we sought to identify other co-receptors and characterize their impact on biglycan-TLR signaling. We found a marked increase in the number of autophagic macrophages in mice stably overexpressing soluble biglycan. In vitro, stimulation of murine macrophages with biglycan triggered autophagosome formation and enhanced the flux of autophagy markers. Soluble biglycan also promoted autophagy in human peripheral blood macrophages. Using macrophages from mice lacking TLR2 and/or TLR4, CD14, or CD44, we demonstrated that the pro-autophagy signal required TLR4 interaction with CD44, a receptor involved in adhesion, migration, lymphocyte activation, and angiogenesis. In vivo, transient overexpression of circulating biglycan at the onset of renal ischemia/reperfusion injury (IRI) enhanced M1 macrophage recruitment into the kidneys of Cd44+/+ and Cd44-/- mice but not Cd14-/- mice. The biglycan-CD44 interaction increased M1 autophagy and the number of renal M2 macrophages and reduced tubular damage following IRI. Thus, CD44 is a novel signaling co-receptor for biglycan, an interaction that is required for TLR4-CD44-dependent pro-autophagic activity in macrophages. Interfering with the interaction between biglycan and specific TLR co-receptors could represent a promising therapeutic intervention to curtail kidney inflammation and damage.
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139
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Macrophages: versatile players in renal inflammation and fibrosis. Nat Rev Nephrol 2019; 15:144-158. [PMID: 30692665 DOI: 10.1038/s41581-019-0110-2] [Citation(s) in RCA: 517] [Impact Index Per Article: 103.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/11/2018] [Indexed: 12/15/2022]
Abstract
Macrophages have important roles in immune surveillance and in the maintenance of kidney homeostasis; their response to renal injury varies enormously depending on the nature and duration of the insult. Macrophages can adopt a variety of phenotypes: at one extreme, M1 pro-inflammatory cells contribute to infection clearance but can also promote renal injury; at the other extreme, M2 anti-inflammatory cells have a reparative phenotype and can contribute to the resolution phase of the response to injury. In addition, bone marrow monocytes can differentiate into myeloid-derived suppressor cells that can regulate T cell immunity in the kidney. However, macrophages can also promote renal fibrosis, a major driver of progression to end-stage renal disease, and the CD206+ subset of M2 macrophages is strongly associated with renal fibrosis in both human and experimental diseases. Myofibroblasts are important contributors to renal fibrosis and recent studies provide evidence that macrophages recruited from the bone marrow can transition directly into myofibroblasts within the injured kidney. This process is termed macrophage-to-myofibroblast transition (MMT) and is driven by transforming growth factor-β1 (TGFβ1)-Smad3 signalling via a Src-centric regulatory network. MMT may serve as a key checkpoint for the progression of chronic inflammation into pathogenic fibrosis.
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140
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Yang C, Qi R, Yang B. Pathogenesis of Chronic Allograft Dysfunction Progress to Renal Fibrosis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1165:101-116. [PMID: 31399963 DOI: 10.1007/978-981-13-8871-2_6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Kidney transplantation is a life-change measurement for the patients of end-stage renal disease (ESRD). However, the renal allograft cannot avoid initial acute kidney injury (AKI) and subsequent chronic allograft dysfunction (CAD), gradually develops fibrosis and eventually loses function. It is imperative to disclose the pathogenesis of AKI and CAD in order to facilitate interventions. We have studied the involvement of immunity, inflammation, and apoptosis in ischemia-reperfusion injury (IRI) and/or immunosuppressant induced AKI models, with associated chronic damage. Our research mainly focused on tubular epithelial cells (TECs) that are passive victims and also active participators in injury and mediate following repair or fibrosis. Targeting not only fibroblasts/myofibroblasts, but also TECs, might be a fundamental strategy to prevent and treat renal fibrosis. We have also evaluated the potential application of siRNA targeting caspase-3 and tissue protective erythropoietin derivatives, HBSP and CHBP, aiming to treat AKI and prevent CAD. Significant improvements have been obtained, but timely diagnosis and precise therapy of AKI and prevention of CAD progressing to ESRD are still very challenging. Modern technologies such as microarray and sequencing analysis have been used to identify biomarkers and potentially facilitate individual cell target treatment for transplant patients.
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Affiliation(s)
- Cheng Yang
- Department of Urology, Zhongshan Hospital, Zhangjiang Technology Institute, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Organ Transplantation, Shanghai, China
| | - Ruochen Qi
- Department of Urology, Zhongshan Hospital, Zhangjiang Technology Institute, Fudan University, Shanghai, China.,Shanghai Key Laboratory of Organ Transplantation, Shanghai, China
| | - Bin Yang
- Nantong-Leicester Joint Institute of Kidney Science, Department of Nephrology, Affiliated Hospital of Nantong University, Renal Group, Basic Medical Research Centre, Medical College of Nantong University, Nantong, 226001, Jiangsu, China. .,Department of Cardiovascular Sciences, University of Leicester, University Hospitals of Leicester, Leicester, LE1 7RH, UK.
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141
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Meng XM. Inflammatory Mediators and Renal Fibrosis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1165:381-406. [PMID: 31399975 DOI: 10.1007/978-981-13-8871-2_18] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Renal inflammation is the initial, healthy response to renal injury. However, prolonged inflammation promotes the fibrosis process, which leads to chronic pathology and eventually end-stage kidney disease. There are two major sources of inflammatory cells: first, bone marrow-derived leukocytes that include neutrophils, macrophages, fibrocytes and mast cells, and second, locally activated kidney cells such as mesangial cells, podocytes, tubular epithelial cells, endothelial cells and fibroblasts. These activated cells produce many profibrotic cytokines and growth factors that cause accumulation and activation of myofibroblasts, and enhance the production of the extracellular matrix. In particular, activated macrophages are key mediators that drive acute inflammation into chronic kidney disease. They produce large amounts of profibrotic factors and modify the microenvironment via a paracrine effect, and they also transdifferentiate to myofibroblasts directly, although the origin of myofibroblasts in the fibrosing kidney remains controversial. Collectively, understanding inflammatory cell functions and mechanisms during renal fibrosis is paramount to improving diagnosis and treatment of chronic kidney disease.
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Affiliation(s)
- Xiao-Ming Meng
- School of Pharmacy, Anhui Medical University, Hefei, Anhui, China.
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142
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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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143
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Chen PS, Li YP, Ni HF. Morphology and Evaluation of Renal Fibrosis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1165:17-36. [PMID: 31399959 DOI: 10.1007/978-981-13-8871-2_2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
With continuing damage, both the indigenous cells of the cortex and medulla, and inflammatory cells are involved in the formation and development of renal fibrosis. Furthermore, interactions among the glomerular, tubular, and interstitial cells contribute to the process by excessive synthesis and decreased degradation of extracellular matrix. The morphology of kidney is different from pathological stages of diseases and changes with various causes. At the end stage of the disease, the kidneys are symmetrically contracted with diffuse granules. Most glomeruli show diffuse fibrosis and hyaline degeneration, and intervening tubules become atrophied. Renal interstitium shows obvious hyperplasia of fibrous tissues with marked infiltration of lymphocytes, mononuclear cells, and plasma cells. The renal arterioles are wall thickening frequently because of hyaline degeneration. Morphologic analysis based on Masson staining of the kidney tissues has been regarded as the golden standard to evaluate the visual fibrosis. However, the present studies have found that the evaluation system has poor repeatability. Several computer-aided image analysis techniques have been used to assess interstitial fibrosis. It is possible that the evaluation of renal fibrosis is carried out by the artificial intelligence renal biopsy pathological diagnosis system in the near future.
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Affiliation(s)
- Ping-Sheng Chen
- Department of Pathology and Pathophysiology, School of Medicine, Southeast University, Nanjing, China.
- Institute of Nephrology, Zhong Da Hospital, School of Medicine, Southeast University, Nanjing, China.
| | - Yi-Ping Li
- Department of Pathology and Pathophysiology, School of Medicine, Southeast University, Nanjing, China
| | - Hai-Feng Ni
- Institute of Nephrology, Zhong Da Hospital, School of Medicine, Southeast University, Nanjing, China
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144
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Cao L, Boston A, Jegede O, Newman HA, Harrison SH, Newman RH, Ongeri EM. Inflammation and Kidney Injury in Diabetic African American Men. J Diabetes Res 2019; 2019:5359635. [PMID: 30868076 PMCID: PMC6379843 DOI: 10.1155/2019/5359635] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 12/04/2018] [Indexed: 12/11/2022] Open
Abstract
African Americans are disproportionately burdened by diabetic kidney disease (DKD). However, little is known about the cellular and molecular mechanisms underlying the onset and progression of DKD in this population. The goal of the current study was to determine the association between specific inflammation markers and kidney injury in diabetic African American men. To this end, we recruited diabetic patients either with (n = 20) or without (n = 87) diagnosed kidney disease along with age-matched nondiabetic controls (n = 81). Urinary albumin-to-creatinine ratios (UACRs) and estimated glomerular filtration rates (eGFR) were used for biochemical assessment of kidney function. We then measured plasma and urinary levels of seven inflammatory markers, including adiponectin, C-reactive protein (CRP), tumor necrosis factor-α (TNF-α), TNF receptor 1 (TNFR1), TNF receptor 2 (TNFR2), interleukin-6 (IL-6), and intercellular cell adhesion molecule-1 (ICAM-1). Plasma levels of TNF-α, TNFR1, and TNFR2 were significantly higher in diabetics with macroalbuminuria compared to nondiabetic controls and diabetics with normoalbuminuria or microalbuminuria. Likewise, urinary levels of ICAM-1 were higher in diabetics with macroalbuminuria compared to the other groups. Indeed, urinary ICAM-1, plasma TNF-α, and adiponectin had moderate positive correlations with UACR while plasma TNFR1 and TNFR2 levels were strongly correlated with kidney injury, indicated by multiple biomarkers of kidney injury. In contrast, though plasma CRP was elevated in diabetic subjects relative to nondiabetic controls, its levels did not correlate with kidney injury. Together, these data suggest that inflammation, particularly that mediated by the TNF-α/NF-κB signaling axis, may play a role in the pathogenesis of DKD in African American men.
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Affiliation(s)
- Lei Cao
- Department of Biology, North Carolina A&T State University, Greensboro, NC 27411, USA
| | - Ava Boston
- Department of Biology, North Carolina A&T State University, Greensboro, NC 27411, USA
| | - Olugbemiga Jegede
- Cone Health Community Health and Wellness Center, Greensboro, NC 27401, USA
| | - Heather A. Newman
- Department of Biology, North Carolina A&T State University, Greensboro, NC 27411, USA
| | - Scott H. Harrison
- Department of Biology, North Carolina A&T State University, Greensboro, NC 27411, USA
| | - Robert H. Newman
- Department of Biology, North Carolina A&T State University, Greensboro, NC 27411, USA
| | - Elimelda Moige Ongeri
- Department of Biology, North Carolina A&T State University, Greensboro, NC 27411, USA
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145
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Chen L, Brenner DA, Kisseleva T. Combatting Fibrosis: Exosome-Based Therapies in the Regression of Liver Fibrosis. Hepatol Commun 2018; 3:180-192. [PMID: 30766956 PMCID: PMC6357832 DOI: 10.1002/hep4.1290] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 10/24/2018] [Indexed: 12/14/2022] Open
Abstract
Hepatic fibrosis results from chronic injury and inflammation in the liver and leads to cirrhosis, liver failure, and portal hypertension. Understanding the molecular mechanisms underlying hepatic fibrosis has advanced the prospect of developing therapies for regression of the disease. Resolution of fibrosis requires a reduction of proinflammatory and fibrogenic cytokines, a decrease in extracellular matrix (ECM) protein production, an increase in collagenase activity, and finally, a disappearance of activated myofibroblasts. Exosomes are nanovesicles of endocytic origin secreted by most cell types. They epigenetically reprogram and alter the phenotype of their recipient cells and hold great promise for the reversal of fibrosis. Recent studies have shown that exosomes function as conduits for intercellular transfer and contain all the necessary components to induce resolution of fibrosis, including the ability to (1) inhibit macrophage activation and cytokine secretion, (2) remodel ECM production and decrease fibrous scars, and (3) inactivate hepatic stellate cells, a major myofibroblast population. Here, we discuss the research involving the regression of hepatic fibrosis. We focus on the newly discovered roles of exosomes during fibrogenesis and as a therapy for fibrosis reversal. We also emphasize the novel discoveries of exosome‐based antifibrotic treatments in vitro and in vivo.
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Affiliation(s)
- Li Chen
- Department of Medicine University of California San Diego La Jolla CA
| | - David A Brenner
- Department of Medicine University of California San Diego La Jolla CA
| | - Tatiana Kisseleva
- Department of Surgery University of California San Diego La Jolla CA
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146
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Li J, Yu YF, Liu CH, Wang CM. Significance of M2 macrophage in tubulointerstitial disease secondary to primary Sjogren's disease. Ren Fail 2018; 40:634-639. [PMID: 30396309 PMCID: PMC6225512 DOI: 10.1080/0886022x.2018.1518242] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Objective: M2 Macrophages could improve tubulointerstitial disease in animal models. HIF-1αpromotes macrophage polarization and is involved in tubular injury. The study aims to observe the clinicopathologic significance of M2 macrophage and HIF-1α in tubulointerstitial injury secondary to primary Sjogren's disease. Methods: Renal tissue samples from patients with tubulointerstitial disease secondary to primary Sjogren's disease (SS, n = 10), chronic tubulointerstitial nephritis secondary to drug (CIN, n = 8) were included in this study. The expression of CD163, CD68 and HIF-1α were examined by immunohistochemistry or immunofluorescence. Results: (1) Renal involvement was the first manifestation in seven of ten (7/10) patients with pSS, including proteinuria, renal dysfunction, renal tubular acidosis and multiple renal stone; and two patient had intractable hypokalemia. (2) There were numerous CD163- positive cells and CD68- positive cells infiltration in tubulointerstitial injury of pSS, especially in patients with hypokalemia. CD163 positive cells and HIF-1αwere mainly expressed in acute tubulointerstitial injury of pSS, which positively correlated to N-acetyl-β-D-glucosaminidase and β2-microglobulin. (3) Compared with CIN, patients with pSS had higher serum globulin level, erythrocyte sedimentation rate (ESR) and lower urinary osmotic pressure. (4) During follow-up of one year, six patients with pSS and acute tubular injury acquired improved renal function on therapy of steroid and total glucosides of peony. The remaining four patients with pSS had stable renal function. Conclusion: M2 macrophages are involved in acute tubular injury in patients with primary Sjogren's disease. Early intervention can improve renal function of tubulointerstitial injury secondary to primary Sjogren's disease.
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Affiliation(s)
- Jun Li
- a Wuxi School of Medicine , Jiangnan University , Wuxi , China.,b Department of Nephrology , The Affiliated Hospital of Jiangnan University , Wuxi , China
| | - Ya-Fen Yu
- b Department of Nephrology , The Affiliated Hospital of Jiangnan University , Wuxi , China
| | - Chang-Hua Liu
- c Department of Nephrology , Clinical Medical College, Yangzhou University , Yangzhou , China
| | - Cui-Mei Wang
- c Department of Nephrology , Clinical Medical College, Yangzhou University , Yangzhou , China
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147
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Coelho S, Cabral G, Lopes JA, Jacinto A. Renal regeneration after acute kidney injury. Nephrology (Carlton) 2018; 23:805-814. [PMID: 29575280 DOI: 10.1111/nep.13256] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2018] [Indexed: 12/28/2022]
Abstract
Acute kidney injury is common and associated with negative renal and patient outcomes. The human kidney has a real but limited regeneration capacity. Understanding renal regeneration may allow us to manipulate this process and thus develop therapeutic weapons to improve patients' outcome. In the first part of this paper we discuss the clinical factors associated with renal recovery: baseline patient particularities, acute kidney injury characteristics and the medical approach taken in the short and long-term. In the second part, the cellular and molecular mechanisms underlying renal regeneration are explored. The immune system seems to have an important role, first promoting inflammation and then tissue healing. Other players, such as cellular senescence, mitochondrial dysfunction, renal haemodynamics and metabolic reprogramming also have a role in renal regeneration. We aim to develop a short review of renal regeneration, offering a holistic view of this process.
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Affiliation(s)
- Silvia Coelho
- Intensive Care Department, Hospital Fernando Fonseca, EPE, Amadora, Portugal.,CEDOC - Chronic Diseases Research Center, NOVA Medical School, NOVA University of Lisbon, Lisbon, Portugal
| | - Guadalupe Cabral
- CEDOC - Chronic Diseases Research Center, NOVA Medical School, NOVA University of Lisbon, Lisbon, Portugal
| | - José A Lopes
- Division of Nephrology and Renal Transplantation, Department of Medicine Centro Hospitalar Lisboa Norte, EPE, Lisbon, Portugal
| | - António Jacinto
- CEDOC - Chronic Diseases Research Center, NOVA Medical School, NOVA University of Lisbon, Lisbon, Portugal
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148
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Bi J, Watanabe H, Fujimura R, Nishida K, Nakamura R, Oshiro S, Imafuku T, Komori H, Miyahisa M, Tanaka M, Matsushita K, Maruyama T. A downstream molecule of 1,25-dihydroxyvitamin D3, alpha-1-acid glycoprotein, protects against mouse model of renal fibrosis. Sci Rep 2018; 8:17329. [PMID: 30478350 PMCID: PMC6255841 DOI: 10.1038/s41598-018-35339-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 09/11/2018] [Indexed: 12/29/2022] Open
Abstract
Renal fibrosis, the characteristic feature of progressive chronic kidney disease, is associated with unremitting renal inflammation. Although it is reported that 1,25-dihydroxyvitamin D3 (1,25(OH)2D3), the active form of vitamin D, elicits an anti-renal fibrotic effect, its molecular mechanism is still unknown. In this study, renal fibrosis and inflammation observed in the kidney of unilateral ureteral obstruction (UUO) mice were reduced by the treatment of 1,25(OH)2D3. The plasma protein level of alpha-1-acid glycoprotein (AGP), a downstream molecule of 1,25(OH)2D3, was increased following administration of 1,25(OH)2D3. Additionally, increased mRNA expression of ORM1, an AGP gene, was observed in HepG2 cells and THP-1-derived macrophages that treated with 1,25(OH)2D3. To investigate the involvement of AGP, exogenous AGP was administered to UUO mice, resulting in attenuated renal fibrosis and inflammation. We also found the mRNA expression of CD163, a monocyte/macrophage marker with anti-inflammatory potential, was increased in THP-1-derived macrophages under stimulus from 1,25(OH)2D3 or AGP. Moreover, AGP prevented lipopolysaccharide-induced macrophage activation. Thus, AGP could be a key molecule in the protective effect of 1,25(OH)2D3 against renal fibrosis. Taken together, AGP may replace vitamin D to function as an important immune regulator, offering a novel therapeutic strategy for renal inflammation and fibrosis.
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Affiliation(s)
- Jing Bi
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.,Program for Leading Graduate Schools "HIGO (Health life science: Interdisciplinary and Glocal Oriented) Program", Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Hiroshi Watanabe
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan. .,Center for Clinical Pharmaceutical Sciences, School of Pharmacy, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.
| | - Rui Fujimura
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.,Program for Leading Graduate Schools "HIGO (Health life science: Interdisciplinary and Glocal Oriented) Program", Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Kento Nishida
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Ryota Nakamura
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Shun Oshiro
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Tadashi Imafuku
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.,Program for Leading Graduate Schools "HIGO (Health life science: Interdisciplinary and Glocal Oriented) Program", Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Hisakazu Komori
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Masako Miyahisa
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan
| | - Motoko Tanaka
- Department of Nephrology, Akebono Clinic, 1-1 Shirafuji 5 Chome, Minami-ku, Kumamoto, 861-4112, Japan
| | - Kazutaka Matsushita
- Department of Nephrology, Akebono Clinic, 1-1 Shirafuji 5 Chome, Minami-ku, Kumamoto, 861-4112, Japan
| | - Toru Maruyama
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-Honmachi, Chuo-ku, Kumamoto, 862-0973, Japan. .,Center for Clinical Pharmaceutical Sciences, School of Pharmacy, Kumamoto University, 5-1, Oe-honmachi, Chuo-ku, Kumamoto, 862-0973, Japan.
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149
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Mylonas KJ, Anderson J, Sheldrake TA, Hesketh EE, Richards JA, Ferenbach DA, Kluth DC, Savill J, Hughes J. Granulocyte macrophage-colony stimulating factor: A key modulator of renal mononuclear phagocyte plasticity. Immunobiology 2018; 224:60-74. [PMID: 30415915 PMCID: PMC6401212 DOI: 10.1016/j.imbio.2018.10.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 10/26/2018] [Accepted: 10/30/2018] [Indexed: 02/07/2023]
Abstract
Macrophage-colony stimulating factor (M-CSF) and granulocyte macrophage-colony stimulating factor (GM-CSF) play key roles in the differentiation of macrophages and dendritic cells (DCs). We examined the effect of treatment with M-CSF-containing macrophage medium or GM-CSF-containing DC medium upon the phenotype of murine bone marrow-derived macrophages and DCs. Culture of macrophages for 5 days in DC medium reduced F4/80 expression and increased CD11c expression with cells effectively stimulating T cell proliferation in a mixed lymphocyte reaction. DC medium treatment of macrophages significantly reduced phagocytosis of both apoptotic cells and latex beads and strongly induced the expression of the chemokine receptor CCR7 known to be involved in DC trafficking to lymph nodes. Lysates of obstructed murine kidneys expressed both M-CSF and GM-CSF though M-CSF expression was dominant (M-CSF:GM-CSF ratio ∼30:1). However, combination treatment with both M-CSF and GM-CSF (ratio 30:1) indicated that small amounts of GM-CSF skewed macrophages towards a DC-like phenotype. To determine whether macrophage phenotype might be modulated in vivo we tracked CD45.1+ bone marrow-derived macrophages intravenously administered to CD45.2+ mice with unilateral ureteric obstruction. Flow cytometry of enzyme dissociated kidneys harvested 3 days later indicated CD11c and MHC Class II upregulation by adoptively transferred CD45.1+ cells with CD45.1+ cells evident in draining renal lymph nodes. Our data suggests that GM-CSF modulates mononuclear phagocyte plasticity, which likely promotes resolution of injury and healing in the injured kidney.
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Affiliation(s)
- Katie J Mylonas
- The University of Edinburgh/ Centre for Inflammation Research, The Queen's Medical Research Institute, Edinburgh BioQuarter, 47 Little France Crescent Edinburgh EH16 4TJ, Scotland, United Kingdom.
| | - Jennifer Anderson
- The University of Edinburgh/ Centre for Inflammation Research, The Queen's Medical Research Institute, Edinburgh BioQuarter, 47 Little France Crescent Edinburgh EH16 4TJ, Scotland, United Kingdom
| | - Tara A Sheldrake
- The University of Edinburgh/ Centre for Inflammation Research, The Queen's Medical Research Institute, Edinburgh BioQuarter, 47 Little France Crescent Edinburgh EH16 4TJ, Scotland, United Kingdom
| | - Emily E Hesketh
- The University of Edinburgh/ Centre for Inflammation Research, The Queen's Medical Research Institute, Edinburgh BioQuarter, 47 Little France Crescent Edinburgh EH16 4TJ, Scotland, United Kingdom
| | - James A Richards
- The University of Edinburgh/ Centre for Inflammation Research, The Queen's Medical Research Institute, Edinburgh BioQuarter, 47 Little France Crescent Edinburgh EH16 4TJ, Scotland, United Kingdom
| | - David A Ferenbach
- The University of Edinburgh/ Centre for Inflammation Research, The Queen's Medical Research Institute, Edinburgh BioQuarter, 47 Little France Crescent Edinburgh EH16 4TJ, Scotland, United Kingdom
| | - David C Kluth
- The University of Edinburgh/ Centre for Inflammation Research, The Queen's Medical Research Institute, Edinburgh BioQuarter, 47 Little France Crescent Edinburgh EH16 4TJ, Scotland, United Kingdom
| | - John Savill
- The University of Edinburgh/ Centre for Inflammation Research, The Queen's Medical Research Institute, Edinburgh BioQuarter, 47 Little France Crescent Edinburgh EH16 4TJ, Scotland, United Kingdom
| | - Jeremy Hughes
- The University of Edinburgh/ Centre for Inflammation Research, The Queen's Medical Research Institute, Edinburgh BioQuarter, 47 Little France Crescent Edinburgh EH16 4TJ, Scotland, United Kingdom
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150
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Jiandong L, Yang Y, Peng J, Xiang M, Wang D, Xiong G, Li S. Trichosanthes kirilowii lectin ameliorates streptozocin-induced kidney injury via modulation of the balance between M1/M2 phenotype macrophage. Biomed Pharmacother 2018; 109:93-102. [PMID: 30396096 DOI: 10.1016/j.biopha.2018.10.060] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 08/21/2018] [Accepted: 10/11/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Macrophage polarization has been reported to induce podocyte injury, which is a typical characteristic of diabetic nephropathy (DN). Trichosanthes kirilowii is an herb showing renal protective effect as well as immune-regulating effect. Therefore, it was hypothesized that the renal protective effect of Trichosanthes kirilowii was associated with its modulation on macrophage polarization. In the current study, we tested the hypothesis by subjecting DN rats to treatment of Trichosanthes kirilowii lectin (TKL), an active component of Trichosanthes kirilowii. METHOD DN was induced using streptozocin (STZ) method, and after 3 days, treatments were performed with different doses of TKL for eight weeks. The effect of TKL on the renal function, structure, and inflammation was assessed. To explain the pathway mediating the effect of TKL on renal tissues, the expressions of markers involved in macrophage polarization, podocyte proliferation, and Notch signaling were determined. Moreover, the DN rats were further administrated with Notch signaling inhibitor, Dibenzazepine (DIB), to verify the key role of Notch signaling in the renal protective effect of TKL. RESULTS STZ induced damages in renal function and structure, which was attenuated by TKL of different doses. Moreover, STZ also increased the production of TNF-α and iNOS while suppressed the production of IL-10 and arginase-1 (Arg-1). The induced inflammation by STZ was inhibited by TKL. The polarization of macrophage into M1 type during the development of DN was blocked by TKL, contributing to the increased proliferation potential of podocytes. Regarding Notch signaling, TKL administration inhibited the activation of the pathway by suppressing the expression of Notch1, NICD1, and Hes1. The administration of DIB had similar effect to that of TKL administration on renal function and structure. CONCLUSIONS The study for the first time showed that TKL attenuated deterioration in renal structure and function by increasing M2 macrophage proportion via inhibition of Notch signaling.
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Affiliation(s)
- Lu Jiandong
- Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Yilong Yang
- Geriatrics Department of Traditional Chinese Medicine, Shenzhen Affiliated Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Jinting Peng
- Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Min Xiang
- Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Dongcai Wang
- Centers for Disease Early Treatment, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, Guangdong, China
| | - Guoliang Xiong
- Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, Guangdong, China.
| | - Shunmin Li
- Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, Guangdong, China.
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