201
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Wang J, Yan W, Peng X, Jiang Y, He L, Peng Y, Chen X, Ye M, Zhuo H. Functional Role of SUV39H1 in Human Renal Tubular Epithelial Cells Under High-glucose Ambiance. Inflammation 2018; 41:1-10. [PMID: 28852907 DOI: 10.1007/s10753-017-0657-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
SUV39H1, the histone methyltransferase (HMTase) of histone H3 lysine 9 trimethylation (H3K9me3), is a known transcriptional repressor of inflammatory genes. The effect of SUV39H1 on inflammatory gene promoters under high-glucose stimulation in vascular smooth muscle cells (VSMCs), macrophages, and cardiomyocytes has been studied, but how SUV39H1 functions in renal tubules under diabetic conditions is unclear. Renal biopsy specimens of ten diabetic nephropathy (DN) subjects and seven non-DN minimal change diseases (MCD) subjects were collected. SUV39H1, IL-6, and MCP-1 expression in renal tissues were measured using immunohistochemical, while SUV39H1, H3K9me3, IL-6, and MCP-1 in human proximal tubular epithelial cells (HK-2) under varying glucose conditions were assayed by Western blot and ELISA. SUV39H1 was overexpressed in HK-2 cells; the regulation of SUV39H1 and H3K9me3 on NF-κB, IL-6, MCP-1, caspase 3, and apoptosis was measured. SUV39H1 was expressed more in diabetic human renal tubules. HK-2 cells with high glucose up-regulated IL-6 and MCP-1 in a dose- and time-dependent manner, and SUV39H1 expression was reduced with greater glucose and prolonged stimulation. Expression of H3K9me3 was synchronized with SUV39H1. Moreover, overexpression of SUV39H1 in high glucose environment was accompanied with increased H3K9me3 and decreased inflammation and apoptosis. SUV39H1 dysregulation may be involved in DN progression. Overexpression of SUV39H1 may reduce renal inflammation and apoptosis via epigenetic modulation, thus plays a protective role in DN.
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Affiliation(s)
- Jiayi Wang
- Nephrology Department, Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, People's Republic of China
| | - Wenzhe Yan
- Nephrology Department, Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, People's Republic of China
| | - Xiaofei Peng
- Nephrology Department, Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, People's Republic of China
| | - Yafeng Jiang
- Nephrology Department, Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, People's Republic of China
| | - Liyu He
- Nephrology Department, Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, People's Republic of China
| | - Youming Peng
- Nephrology Department, Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, People's Republic of China.
| | - Xian Chen
- Nephrology Department, Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, People's Republic of China
| | - Muyao Ye
- Nephrology Department, Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, People's Republic of China
| | - Hui Zhuo
- Nephrology Department, Second Xiangya Hospital, Central South University, No. 139 Renmin Road, Changsha, 410011, Hunan, People's Republic of China
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202
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Marquez-Exposito L, Cantero-Navarro E, Lavoz C, Fierro-Fernández M, Poveda J, Rayego-Mateos S, Rodrigues-Diez RR, Morgado-Pascual JL, Orejudo M, Mezzano S, Ruiz-Ortega M. Análisis de la vía Notch como una posible diana terapéutica en la patología renal. Nefrologia 2018; 38:466-475. [DOI: 10.1016/j.nefro.2017.11.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 10/09/2017] [Accepted: 11/09/2017] [Indexed: 12/18/2022] Open
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203
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Oxidative stress - chronic kidney disease - cardiovascular disease: A vicious circle. Life Sci 2018; 210:125-131. [PMID: 30172705 DOI: 10.1016/j.lfs.2018.08.067] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 08/22/2018] [Accepted: 08/30/2018] [Indexed: 12/11/2022]
Abstract
Chronic kidney disease patient's progression to end-stage renal disease as well as their high mortality are linked to cardiovascular disease. However, the high incidence rate of cardiovascular morbidity and mortality in these patients is not fully accounted for by traditional cardiovascular risk factors such as diabetes, hypertension and obesity. Renal disease and CVD are associated with endothelial dysfunction, inflammation and oxidative stress and in this review we will examine what is known regarding their similar roles in both CVD and chronic kidney disease, specifically focusing on the interconnections between oxidative stress, inflammation and endothelial dysfunction. These interconnections are best visualized as a vicious circle wherein these entities coexist and communicate with each other, thereby exacerbating the processes underpinning these different entities with the end result of the high morbidity and mortality that characterize CKD patients. By exploring this vicious circle i.e. the mode and extent of the interrelationships as well as some of the underlying mechanisms involved, this review aims at outlining our current understanding as well as highlighting future avenues for research and potential targets for therapeutic intervention.
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204
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Gonzalez LL, Garrie K, Turner MD. Type 2 diabetes - An autoinflammatory disease driven by metabolic stress. Biochim Biophys Acta Mol Basis Dis 2018; 1864:3805-3823. [PMID: 30251697 DOI: 10.1016/j.bbadis.2018.08.034] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 08/27/2018] [Indexed: 02/06/2023]
Abstract
Type 2 diabetes has traditionally been viewed as a metabolic disorder characterised by chronic high glucose levels, insulin resistance, and declining insulin secretion from the pancreas. Modern lifestyle, with abundant nutrient supply and reduced physical activity, has resulted in dramatic increases in the rates of obesity-associated disease conditions, including diabetes. The associated excess of nutrients induces a state of systemic low-grade chronic inflammation that results from production and secretion of inflammatory mediators from the expanded pool of activated adipocytes. Here, we review the mechanisms by which obesity induces adipose tissue dysregulation, detailing the roles of adipose tissue secreted factors and their action upon other cells and tissues central to glucose homeostasis and type 2 diabetes. Furthermore, given the emerging importance of adipokines, cytokines and chemokines in disease progression, we suggest that type 2 diabetes should now be viewed as an autoinflammatory disease, albeit one that is driven by metabolic dysregulation.
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Affiliation(s)
- Laura L Gonzalez
- Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University, Clifton, Nottingham NG11 8NS, United Kingdom
| | - Karin Garrie
- Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University, Clifton, Nottingham NG11 8NS, United Kingdom
| | - Mark D Turner
- Interdisciplinary Biomedical Research Centre, School of Science and Technology, Nottingham Trent University, Clifton, Nottingham NG11 8NS, United Kingdom.
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205
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Wang W, Wang X, Zhang XS, Liang CZ. Cryptotanshinone Attenuates Oxidative Stress and Inflammation through the Regulation of Nrf-2 and NF-κB in Mice with Unilateral Ureteral Obstruction. Basic Clin Pharmacol Toxicol 2018; 123:714-720. [PMID: 29972887 DOI: 10.1111/bcpt.13091] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 06/29/2018] [Indexed: 12/24/2022]
Abstract
Oxidative stress and inflammatory responses are closely implicated in the progression of renal interstitial fibrosis, thereby leading to chronic kidney disease. Cryptotanshinone (CTS) is a natural compound involved in antioxidant and anti-inflammatory activities. We evaluated the effects of CTS on inflammation and oxidative stress in obstructed kidneys. Mice received gastric gavage of CTS from 7 days before unilateral ureteral obstruction operation to 1 week after surgery. Administration of CTS at 50 and 100 mg/kg/day significantly decreased collagen production, as shown by Masson staining. Immunohistochemistry staining and RT-PCR confirmed that CTS reduced extracellular matrix proteins, such as fibronectin and collagen-1, in the obstructed kidneys in a dose-dependent manner. Furthermore, immunohistochemistry staining indicated that CTS inhibited infiltration of the macrophage (CD68-positive) and lymphocyte (CD3-positive) cells, which were associated with the suppression of the nuclear factor-κB signalling activation. CTS increased superoxide dismutase, catalase and glutathione while decreased malondialdehyde production. More importantly, CTS activated Nrf-2 and HO-1 in the obstructed kidneys for 7 days. CTS could protect renal interstitial fibrosis by ameliorating inflammation and oxidative stress, which might be through the regulation of NF-κB and Nrf-2/HO-1 signalling pathways.
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Affiliation(s)
- Wei Wang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.,Institute of Urology, Anhui Medical University, Hefei, Anhui, China
| | - Xiao Wang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.,Institute of Urology, Anhui Medical University, Hefei, Anhui, China.,Department of Urology, Renmin Hospital of Fuyang City, Yin Zhou District, Fuyang, Anhui, China
| | - Xian-Sheng Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.,Institute of Urology, Anhui Medical University, Hefei, Anhui, China
| | - Chao-Zhao Liang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.,Institute of Urology, Anhui Medical University, Hefei, Anhui, China
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206
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Quercetin ameliorates kidney injury and fibrosis by modulating M1/M2 macrophage polarization. Biochem Pharmacol 2018; 154:203-212. [DOI: 10.1016/j.bcp.2018.05.007] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Accepted: 05/09/2018] [Indexed: 12/11/2022]
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207
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Kohlová M, Amorim CG, Araújo A, Santos-Silva A, Solich P, Montenegro MCBSM. The biocompatibility and bioactivity of hemodialysis membranes: their impact in end-stage renal disease. J Artif Organs 2018; 22:14-28. [DOI: 10.1007/s10047-018-1059-9] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 07/08/2018] [Indexed: 12/15/2022]
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208
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Liu R, Shen H, Wang T, Ma J, Yuan M, Huang J, Wei M, Liu F. TRAF6 mediates high glucose-induced endothelial dysfunction. Exp Cell Res 2018; 370:490-497. [PMID: 30017935 DOI: 10.1016/j.yexcr.2018.07.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 07/07/2018] [Accepted: 07/09/2018] [Indexed: 01/21/2023]
Abstract
To investigate the role of tumor necrosis factor-associated factor 6 (TRAF6) in high glucose-induced endothelial cell dysfunction. Human aortic endothelial cells (HAECs) were cultured in high glucose medium, and TRAF6 expression was assayed by quantitative real-time Polymerase Chain Reaction (PCR) and western blotting. The effect of TRAF6 on in vitro endothelial cell viability, apoptosis, migration, and endothelial-monocyte adhesion was investigated by gene knockdown. The expression of TRAF6 and related adhesion molecules was assayed in a mouse streptozotocin-induced type I diabetes model. The signaling pathways associated with TRAF6 effects on endothelial cells were investigated in high glucose HAEC cultures. Culture of HAECs in high glucose medium significantly increased TRAF6 mRNA and protein expression in a time dependent manner. High glucose markedly reduced HAEC viability, apoptosis, and migration, and these effects was significantly reversed by TRAF6 knockdown. High glucose significantly increased intercellular adhesion of THP-1 monocytic cells and HAECs via upregulation of ICAM-1 and VCAM-1 expression, and TRAF6 knockdown attenuated the effect on THP-1 cell adhesion. TRAF6, ICAM-1, and VCAM-1 expression were increased in aorta tissue of mice with streptozotocin-induced diabetes. The free radical scavenger N-acetyl-L-cysteine attenuated TRAF6 expression in HAECs cultured in high glucose medium, and TRAF6 knockdown inhibited high glucose-induced IκB-α degradation and JNK phosphorylation. TRAF6 mediated high glucose-induced endothelial dysfunction via NF-κB- and AP-1-dependent signaling. Targeting TRAF6 may delay progression of vascular diseases during diabetes mellitus and atherosclerosis.
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Affiliation(s)
- Rong Liu
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Rd, Shanghai 200233, China
| | - Hong Shen
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Rd, Shanghai 200233, China
| | - Tao Wang
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Rd, Shanghai 200233, China
| | - Jian Ma
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Rd, Shanghai 200233, China
| | - Minjie Yuan
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Rd, Shanghai 200233, China
| | - Jing Huang
- Shanghai Jiao Tong University School of Medicine, 227 Chongqing Rd, Shanghai 200025, China
| | - Meng Wei
- Department of Cardiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, 600 Yishan Rd, Shanghai 200233, China.
| | - Fang Liu
- Department of Endocrinology and Metabolism, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai Clinical Medical Centre of Diabetes, Shanghai Key Laboratory of Diabetes, Shanghai Key Clinical Centre of Metabolic Diseases, Shanghai Institute for Diabetes, 600 Yishan Rd, Shanghai 200233, China.
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209
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210
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Anjos JS, Cardozo LF, Esgalhado M, Lindholm B, Stenvinkel P, Fouque D, Mafra D. Could Low-Protein Diet Modulate Nrf2 Pathway in Chronic Kidney Disease? J Ren Nutr 2018; 28:229-234. [DOI: 10.1053/j.jrn.2017.11.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 10/25/2017] [Accepted: 11/19/2017] [Indexed: 12/21/2022] Open
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211
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Cellular and molecular mechanisms of kidney fibrosis. Mol Aspects Med 2018; 65:16-36. [PMID: 29909119 DOI: 10.1016/j.mam.2018.06.002] [Citation(s) in RCA: 264] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 06/12/2018] [Indexed: 12/14/2022]
Abstract
Renal fibrosis is the final pathological process common to any ongoing, chronic kidney injury or maladaptive repair. It is considered as the underlying pathological process of chronic kidney disease (CKD), which affects more than 10% of world population and for which treatment options are limited. Renal fibrosis is defined by excessive deposition of extracellular matrix, which disrupts and replaces the functional parenchyma that leads to organ failure. Kidney's histological structure can be divided into three main compartments, all of which can be affected by fibrosis, specifically termed glomerulosclerosis in glomeruli, interstitial fibrosis in tubulointerstitium and arteriosclerosis and perivascular fibrosis in vasculature. In this review, we summarized the different appearance, cellular origin and major emerging processes and mediators of fibrosis in each compartment. We also depicted and discussed the challenges in translation of anti-fibrotic treatment to clinical practice and discuss possible solutions and future directions.
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212
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FPS-ZM1 and valsartan combination protects better against glomerular filtration barrier damage in streptozotocin-induced diabetic rats. J Physiol Biochem 2018; 74:467-478. [PMID: 29948786 DOI: 10.1007/s13105-018-0640-2] [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] [Received: 03/16/2018] [Accepted: 06/01/2018] [Indexed: 12/18/2022]
Abstract
Despite the effectiveness of renin-angiotensin blockade in retarding diabetic nephropathy progression, a considerable number of patients still develop end-stage renal disease. The present investigation aims to evaluate the protective potential of FPS-ZM1, a selective inhibitor of receptor for advanced glycation end products (RAGE), alone and in combination with valsartan, an angiotensin receptor blocker, against glomerular injury parameters in streptozotocin-induced diabetic rats. FPS-ZM1 at 1 mg/kg (i.p.), valsartan at 100 mg/kg (p.o.), and their combination were administered for 4 weeks, starting 2 months after diabetes induction in rats. Tests for kidney function, glomerular filtration barrier, and podocyte slit diaphragm integrities were performed. Combined FPS-ZM1/valsartan attenuated diabetes-induced elevations in renal levels of RAGE and phosphorylated NF-κB p65 subunit. It ameliorated glomerular injury due to diabetes by increasing glomerular nephrin and synaptopodin expressions, mitigating renal integrin-linked kinase (ILK) levels, and lowering urinary albumin, collagen type IV, and podocin excretions. FPS-ZM1 also improved renal function as demonstrated by decreasing levels of serum cystatin C. Additionally, the combination also alleviated indices of renal inflammation as revealed by decreased renal monocyte chemoattractant protein 1 (MCP-1) and chemokine (C-X-C motif) ligand 12 (CXCL12) expressions, F4/80-positive macrophages, glomerular TUNEL-positive cells, and urinary alpha-1-acid glycoprotein (AGP) levels. These findings underline the benefits of FPS-ZM1 added to valsartan in alleviating renal glomerular injury evoked by diabetes in streptozotocin rats and suggest FPS-ZM1 as a new potential adjunct to the conventional renin-angiotensin blockade.
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213
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Gremlin activates the Notch pathway linked to renal inflammation. Clin Sci (Lond) 2018; 132:1097-1115. [PMID: 29720422 DOI: 10.1042/cs20171553] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 04/27/2018] [Accepted: 05/02/2018] [Indexed: 02/07/2023]
Abstract
Preclinical studies suggest that Gremlin participates in renal damage and could be a potential therapeutic target for human chronic kidney diseases. Inflammation is a common characteristic of progressive renal disease, and therefore novel anti-inflammatory therapeutic targets should be investigated. The Notch signaling pathway is involved in kidney development and is activated in human chronic kidney disease, but whether Gremlin regulates the Notch pathway has not been investigated. In cultured tubular cells, Gremlin up-regulated gene expression of several Notch pathway components, increased the production of the canonical ligand Jagged-1, and caused the nuclear translocation of active Notch-1 (N1ICD). In vivo administration of Gremlin into murine kidneys elicited Jagged-1 production, increased N1ICD nuclear levels, and up-regulated the gene expression of the Notch effectors hes-1 and hey-1 All these data clearly demonstrate that Gremlin activates the Notch pathway in the kidney. Notch inhibition using the γ-secretase inhibitor DAPT impaired renal inflammatory cell infiltration and proinflammatory cytokines overexpression in Gremlin-injected mice and in experimental models of renal injury. Moreover, Notch inhibition blocked Gremlin-induced activation of the canonical and noncanonical nuclear factor-κB (NF-κB) pathway, identifying an important mechanism involved in the anti-inflammatory actions of Notch inhibition. In conclusion, Gremlin activates the Notch pathway in the kidney and this is linked to NF-κB-mediated inflammation, supporting the hypothesis that Notch inhibition could be a potential anti-inflammatory strategy for renal diseases.
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214
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Sanajou D, Ghorbani Haghjo A, Argani H, Aslani S. AGE-RAGE axis blockade in diabetic nephropathy: Current status and future directions. Eur J Pharmacol 2018; 833:158-164. [PMID: 29883668 DOI: 10.1016/j.ejphar.2018.06.001] [Citation(s) in RCA: 170] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/02/2018] [Accepted: 06/04/2018] [Indexed: 12/16/2022]
Abstract
Diabetic nephropathy is one of the most frequent micro-vascular complications both in type 1 and type 2 diabetic patients and is the leading cause of end-stage renal disease worldwide. Although disparate mechanisms give rise to the development of diabetic nephropathy, prevailing evidence accentuates that hyperglycemia-associated generation of advanced glycation end products (AGEs) plays a central role in the disease pathophysiology. Engagement of the receptor for AGE (RAGE) with its ligands provokes oxidative stress and chronic inflammation in renal tissues, ending up with losses in kidney function. Moreover, RAGE activation evokes the activation of different intracellular signaling pathways like PI3K/Akt, MAPK/ERK, and NF-κB; and therefore, its blockade seems to be an attractive therapeutic target in these group of patients. By recognizing the contribution of AGE-RAGE axis to the pathogenesis of diabetic nephropathy, agents that block AGEs formation have been at the heart of investigations for several years, yielding encouraging improvements in experimental models of diabetic nephropathy. Even so, recent studies have evaluated the effects of specific RAGE inhibition with FPS-ZM1 and RAGE-aptamers as novel therapeutic strategies. Despite all these promising outcomes in experimental models of diabetic nephropathy, no thorough clinical trial have ever examined the end results of AGE-RAGE axis blockade in patients of diabetic nephropathy. As most of the AGE lowering or RAGE inhibiting compounds have emerged to be non-toxic, devising novel clinical trials appears to be inevitable. Here, the current potential treatment options for diabetic nephropathy by AGE-RAGE inhibitory modalities have been reviewed.
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Affiliation(s)
- Davoud Sanajou
- Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Ghorbani Haghjo
- Biotechnology Research Center, Tabriz University of Medical Sciences, Golgasht Avenue, POBOX: 14711, 5166614711 Tabriz, Iran.
| | - Hassan Argani
- Urology and Nephrology Research Center, Beheshti University of Medical Sciences, Tehran, Iran
| | - Somayeh Aslani
- Department of Biochemistry, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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215
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Gene variants in the NF-KB pathway (NFKB1, NFKBIA, NFKBIZ) and their association with type 2 diabetes and impaired renal function. Hum Immunol 2018; 79:494-498. [DOI: 10.1016/j.humimm.2018.03.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 03/06/2018] [Accepted: 03/26/2018] [Indexed: 12/29/2022]
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216
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N-(2-hydroxyphenyl)acetamide and its gold nanoparticle conjugation prevent glycerol-induced acute kidney injury by attenuating inflammation and oxidative injury in mice. Mol Cell Biochem 2018; 450:43-52. [PMID: 29790115 DOI: 10.1007/s11010-018-3371-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 05/18/2018] [Indexed: 12/20/2022]
Abstract
The protective activity of N-(2-hydroxyphenyl)acetamide (NA-2) and NA-2-coated gold nanoparticles (NA-2-AuNPs) in glycerol-treated model of acute kidney injury (AKI) in mice was investigated. NA-2 (50 mg/kg) and NA-2-AuNPs (30 mg/kg) were given to the animals for four days followed by 24-h water deprivation and injection of 50% glycerol (10 ml/kg im). The animals were sacrificed on the next day. Blood and kidneys were collected for biochemical investigations (urea and creatinine), histological studies (hematoxylin and eosin; and periodic acid-Schiff staining), immunohistochemistry (actin and cyclooxygenase-2, Cox-2), and real-time RT-PCR (inducible nitric oxide synthase, iNOS; nuclear factor-κB p50, NFκB; hemeoxygenase-1, HO-1; and kidney injury molecule-1, Kim-1). NA-2 protected renal tubular necrosis and inflammation, though the result of NA-2-AuNPs was better than compound alone and it also exhibited the activity at far less dose. The test compound and its gold nano-formulation decreased the levels of serum urea and creatinine level in the treated animals. Both NA-2 and NA-2-AuNPs also conserved actin cytoskeleton, and lowered COX-2 protein expression. Moreover, the mRNA expressions of iNOS and NFkB p50 were down-regulated, and HO-1 and Kim-1 genes were up-regulated. We conclude that NA-2 and NA-2-AuNPs ameliorates kidney inflammation and injury in glycerol-induced AKI animal model via anti-oxidant and anti-inflammatory mechanisms which make it a suitable candidate for further studies. We believe that these findings will contribute in the understanding of the mechanism of action of paracetamol-like drugs and can be considered for clinical research for the prevention of AKI.
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217
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Shukla R, Banerjee S, Tripathi YB. Pueraria tuberosa extract inhibits iNOS and IL-6 through suppression of PKC-α and NF-kB pathway in diabetes-induced nephropathy. ACTA ACUST UNITED AC 2018; 70:1102-1112. [PMID: 29770444 DOI: 10.1111/jphp.12931] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 04/16/2018] [Indexed: 01/08/2023]
Abstract
OBJECTIVES Inflammation plays an important role in the pathogenesis of diabetic nephropathy (DN). The aim of this study was to explore the anti-inflammatory role of PTY-2r (extracted from Pueraria tuberosa), on streptozotocin (STZ)-induced DN rats. METHODS Diabetes was induced by intraperitoneal injection of STZ (55mg/kg) in rats. After 60 days, the rats were randomly divided into three groups (n = 6/each group), namely DN control group 2, DN rats treated with PTY-2r at dose of 100 mg/100 g, group 3 and 50 mg/100 g, group 4, p.o for 20 days. The normal rats were chosen as a normal control (NC) group 1. KEY FINDINGS In DN rats, the expression of iNOS and inflammatory cytokines (IL-6 and TNF-α) was significantly increased. Raised expression of PKC-α was also found. As NF-kB is the main transcription factor for the inflammatory response-mediated progression of DN, variation in NF-kB expression and its activated phosphorylated derivative (pNF-kB) were also evaluated and increase in expression was obtained in the kidney of DN rats. PTY-2r treatment significantly reversed these changes in dose-dependent manner. CONCLUSIONS This study suggested that the nephroprotective effect of PTY-2r is possibly due to downregulation of PKC-α and NF-kB pathway and normalizing the expression of inflammatory cytokines and iNOS in the kidney of DN rats.
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Affiliation(s)
- Rashmi Shukla
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Somanshu Banerjee
- Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Yamini B Tripathi
- Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
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218
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Miyasato Y, Yoshizawa T, Sato Y, Nakagawa T, Miyasato Y, Kakizoe Y, Kuwabara T, Adachi M, Ianni A, Braun T, Komohara Y, Mukoyama M, Yamagata K. Sirtuin 7 Deficiency Ameliorates Cisplatin-induced Acute Kidney Injury Through Regulation of the Inflammatory Response. Sci Rep 2018; 8:5927. [PMID: 29651144 PMCID: PMC5897539 DOI: 10.1038/s41598-018-24257-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 03/29/2018] [Indexed: 12/31/2022] Open
Abstract
Cisplatin-induced acute kidney injury (AKI) has been recognized as one of cisplatin’s serious side effects, limiting its use in cancer therapy. Sirtuin 1 (SIRT1) and SIRT3 play protective roles against cisplatin-induced kidney injury. However, the role of SIRT7 in cisplatin-induced kidney injury is not yet known. In this study, we found that Sirt7 knockout (KO) mice were resistant to cisplatin-induced AKI. Furthermore, our studies identified that loss of SIRT7 decreases the expression of tumor necrosis factor-α (TNF-α) by regulating the nuclear expression of the transcription factor nuclear factor kappa B. It has been reported that cisplatin-induced nephrotoxicity is mediated by TNF-α. Our results indicate that SIRT7 plays an important role in cisplatin-induced AKI and suggest the possibility of SIRT7 as a novel therapeutic target for cisplatin-induced nephrotoxicity.
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Affiliation(s)
- Yoshikazu Miyasato
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan.,Department of Nephrology, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan
| | - Tatsuya Yoshizawa
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan
| | - Yoshifumi Sato
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan
| | - Terumasa Nakagawa
- Department of Nephrology, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan
| | - Yuko Miyasato
- Department of Cell Pathology, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan
| | - Yutaka Kakizoe
- Department of Nephrology, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan
| | - Takashige Kuwabara
- Department of Nephrology, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan
| | - Masataka Adachi
- Department of Nephrology, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan
| | - Alessandro Ianni
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Thomas Braun
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Yoshihiro Komohara
- Department of Cell Pathology, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan
| | - Masashi Mukoyama
- Department of Nephrology, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan
| | - Kazuya Yamagata
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, Japan.
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Urine Trefoil Factors as Prognostic Biomarkers in Chronic Kidney Disease. BIOMED RESEARCH INTERNATIONAL 2018; 2018:3024698. [PMID: 29850501 PMCID: PMC5903307 DOI: 10.1155/2018/3024698] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 03/01/2018] [Indexed: 12/18/2022]
Abstract
Introduction Trefoil factor family (TFF) peptides are increased in serum and urine in patients with chronic kidney disease (CKD). However, whether the levels of TFF predict the progression of CKD remains to be elucidated. Methods We determined the TFF levels using peptide-specific ELISA in spot urine samples and performed a prospective cohort study. The association between the levels of urine TFFs and other urine biomarkers as well as the renal prognosis was analyzed in 216 CKD patients (mean age: 53.7 years, 47.7% female, 56.9% with chronic glomerulonephritis, and mean eGFR: 58.5 ml/min/1.73 m2). Results The urine TFF1 and TFF3 levels significantly increased with the progression of CKD stages, but not the urine TFF2 levels. The TFF1 and TFF3 peptide levels predicted the progression of CKD ≥ stage 3b by ROC analysis (AUC 0.750 and 0.879, resp.); however, TFF3 alone predicted CKD progression in a multivariate logistic regression analysis (odds ratio 3.854, 95% confidence interval 1.316–11.55). The Kaplan-Meier survival curves demonstrated that patients with a higher TFF1 and TFF3 alone, or in combination with macroalbuminuria, had a significantly worse renal prognosis. Conclusion The data suggested that urine TFF peptides are associated with renal progression and the outcomes in patients with CKD.
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Mir SM, Ravuri HG, Pradhan RK, Narra S, Kumar JM, Kuncha M, Kanjilal S, Sistla R. Ferulic acid protects lipopolysaccharide-induced acute kidney injury by suppressing inflammatory events and upregulating antioxidant defenses in Balb/c mice. Biomed Pharmacother 2018; 100:304-315. [DOI: 10.1016/j.biopha.2018.01.169] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 01/27/2018] [Accepted: 01/29/2018] [Indexed: 12/16/2022] Open
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221
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Xiong C, Zang X, Zhou X, Liu L, Masucci MV, Tang J, Li X, Liu N, Bayliss G, Zhao TC, Zhuang S. Pharmacological inhibition of Src kinase protects against acute kidney injury in a murine model of renal ischemia/reperfusion. Oncotarget 2018; 8:31238-31253. [PMID: 28415724 PMCID: PMC5458204 DOI: 10.18632/oncotarget.16114] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 03/02/2017] [Indexed: 12/19/2022] Open
Abstract
Activation of Src kinase has been implicated in the pathogenesis of acute brain, liver, and lung injury. However, the role of Src in acute kidney injury (AKI) remains unestablished. To address this, we evaluated the effects of Src inhibition on renal dysfunction and pathological changes in a murine model of AKI induced by ischemia/reperfusion (I/R). I/R injury to the kidney resulted in increased Src phosphorylation at tyrosine 416 (activation). Administration of PP1, a highly selective Src inhibitor, blocked Src phosphorylation, improved renal function and ameliorated renal pathological damage. PP1 treatment also suppressed renal expression of neutrophil gelatinase-associated lipocalin and reduced apoptosis in the injured kidney. Moreover, Src inhibition prevented downregulation of several adherens and tight junction proteins, including E-cadherin, ZO-1, and claudins-1/−4 in the kidney after I/R injury as well as in cultured renal proximal tubular cells following oxidative stress. Finally, PP1 inhibited I/R–induced renal expression of matrix metalloproteinase-2 and -9, phosphorylation of extracellular signal–regulated kinases1/2, signal transducer and activator of transcription-3, and nuclear factor-κB, and the infiltration of macrophages into the kidney. These data indicate that Src is a pivotal mediator of renal epithelial injury and that its inhibition may have a therapeutic potential to treat AKI.
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Affiliation(s)
- Chongxiang Xiong
- Departments of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China.,Department of Medicine, Rhode Island Hospital and Alpert Medical School, Brown University, Providence, RI 02903, USA
| | - Xiujuan Zang
- Department of Nephrology, Shanghai Songjiang District Central Hospital, Shanghai, China
| | - Xiaoxu Zhou
- Department of Medicine, Rhode Island Hospital and Alpert Medical School, Brown University, Providence, RI 02903, USA
| | - Lirong Liu
- Department of Medicine, Rhode Island Hospital and Alpert Medical School, Brown University, Providence, RI 02903, USA
| | - Monica V Masucci
- Department of Medicine, Rhode Island Hospital and Alpert Medical School, Brown University, Providence, RI 02903, USA
| | - Jinhua Tang
- Departments of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Xuezhu Li
- Departments of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Na Liu
- Departments of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - George Bayliss
- Department of Medicine, Rhode Island Hospital and Alpert Medical School, Brown University, Providence, RI 02903, USA
| | - Ting C Zhao
- Department of Surgery, Boston University Medical School, Roger Williams Medical Center, Boston University, Providence, RI, 02908, USA
| | - Shougang Zhuang
- Departments of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China.,Department of Medicine, Rhode Island Hospital and Alpert Medical School, Brown University, Providence, RI 02903, USA
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222
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Khor BH, Narayanan SS, Sahathevan S, Gafor AHA, Daud ZAM, Khosla P, Sabatino A, Fiaccadori E, Chinna K, Karupaiah T. Efficacy of Nutritional Interventions on Inflammatory Markers in Haemodialysis Patients: A Systematic Review and Limited Meta-Analysis. Nutrients 2018; 10:nu10040397. [PMID: 29570616 PMCID: PMC5946182 DOI: 10.3390/nu10040397] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 03/20/2018] [Accepted: 03/21/2018] [Indexed: 12/31/2022] Open
Abstract
Low-grade chronic inflammation is prevalent in patients undergoing haemodialysis (HD) treatment and is linked to the development of premature atherosclerosis and mortality. The non-pharmacological approach to treat inflammation in HD patients through nutritional intervention is well cited. We aimed to assess the efficacy of different nutritional interventions at improving inflammatory outcomes in HD patients, based on markers such as C-reactive protein (CRP), interleukin-6 (IL-6), and tumour necrosis factor-α (TNF-α). We searched PubMed, Cochrane Library, and Embase for randomized controlled trials (RCT) published before June 2017. Inclusion criteria included RCTs on adult patients on maintenance HD treatment with duration of nutritional interventions for a minimum 4 weeks. Risk of bias was assessed using the Jadad score. In total, 46 RCTs experimenting different nutritional interventions were included in the review and categorized into polyphenols rich foods, omega-3 fatty acids, antioxidants, vitamin D, fibres, and probiotics. Meta-analyses indicated significant reduction in CRP levels by omega-3 fatty acids (Random model effect: -0.667 mg/L, p < 0.001) and vitamin E (fixed model effect: -0.257 mg/L, p = 0.005). Evidence for other groups of nutritional interventions was inconclusive. In conclusion, our meta-analysis provided evidence that omega-3 fatty acids and vitamin E could improve inflammatory outcomes in HD patients.
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Affiliation(s)
- Ban-Hock Khor
- Dietetics Program, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia.
| | | | - Sharmela Sahathevan
- Dietetics Program, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia.
| | - Abdul Halim Abdul Gafor
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia.
| | - Zulfitri Azuan Mat Daud
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor 43400, Malaysia.
| | - Pramod Khosla
- Department of Nutrition & Food Sciences, College of Liberal Arts & Sciences, Wayne State University, Detroit, MI 48202, USA.
| | - Alice Sabatino
- Acute and Chronic Renal Failure Unit, Department of Clinical and Experimental Medicine, University of Parma, 43126 Parma, Italy.
| | - Enrico Fiaccadori
- Acute and Chronic Renal Failure Unit, Department of Clinical and Experimental Medicine, University of Parma, 43126 Parma, Italy.
| | - Karuthan Chinna
- Department of Social and Preventive Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Tilakavati Karupaiah
- Dietetics Program, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia.
- School of BioSciences, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya 47500, Malaysia.
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Li Z, Hong Z, Peng Z, Zhao Y, Shao R. Acetylshikonin from Zicao ameliorates renal dysfunction and fibrosis in diabetic mice by inhibiting TGF-β1/Smad pathway. Hum Cell 2018; 31:199-209. [DOI: 10.1007/s13577-017-0192-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 11/04/2017] [Indexed: 12/20/2022]
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224
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Involvement of NF-κBIZ and related cytokines in age-associated renal fibrosis. Oncotarget 2018; 8:7315-7327. [PMID: 28099916 PMCID: PMC5352323 DOI: 10.18632/oncotarget.14614] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 01/04/2017] [Indexed: 12/15/2022] Open
Abstract
Chronic inflammation is a major contributor to age-related nephropathic changes, including renal fibrosis. In this study, various experimental paradigms were designed to delineate the role played by NF-κBIZ (also known as IκBζ) in age-associated renal fibrosis. Analyses based on RNA-sequencing findings obtained by next generation sequencing (NGS) revealed the upregulations of NF-κBIZ and of IL-6 and MCP-1 (both known to be regulated by NF-κBIZ) during aging. The up-regulation of NF-κBIZ in aged rat kidneys coincided with increased macrophage infiltration. In LPS-treated macrophages, oxidative stress was found to play a pivotal role in NF-κBIZ expression, suggesting age-related oxidative stress is associated with NF-κBIZ activation. Furthermore, these in vitro findings were confirmed in LPS-treated old rats, which showed higher levels of oxidative stress and NF-κBIZ in kidneys than LPS-treated young rats. Additional in vitro experiments using macrophages and kidney fibroblasts demonstrated NF-κBIZ and related cytokines participate in fibrosis. In particular, increased levels of NF-κBIZ-associated cytokines in macrophages significantly up-regulated TGF-β induced kidney fibroblast activation. Moreover, experiments with NF-κBIZ knocked down macrophages showed reduced TGF-β-induced kidney fibroblast activation. The findings of the present study provide evidence regarding an involvement of NF-κBIZ in age-associated progressive renal fibrosis and provides potential targets for its prevention.
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225
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Liao WT, Xiao XY, Zhu Y, Zhou SP. The effect of celastrol on learning and memory in diabetic rats after sevoflurane inhalation. Arch Med Sci 2018; 14:370-380. [PMID: 29593812 PMCID: PMC5868673 DOI: 10.5114/aoms.2016.63740] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 08/15/2016] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION The aim was to devise an animal model showing some of the neuropathological changes seen in senile dementia, and to investigate the effect of celastrol on cognition neuropathology in this model. MATERIAL AND METHODS Forty male Sprague Dawley rats weighing 300-350 g were randomly divided into 5 groups (n = 8 each): control (Con); inhaled sevoflurane (Sev); diabetes mellitus (DM); diabetes mellitus + inhaled sevoflurane (DM/Sev); diabetes + inhaled sevoflurane + celastrol (Cel). Diabetes was induced by an intraperitoneal injection of streptozotocin (STZ). After 20 days, the Sev, DM/Sev and Cel group rats inhaled 3% sevoflurane for 2 h, while the control and DM groups inhaled air. Cel group rats were given intraperitoneal injections of celastrol (0.7 mg/kg) daily for 4 days, while the control group received intraperitoneal injections of an equal volume of dimethylsulfoxide. The Morris water maze test was performed to test cognition. Animals were killed after the last water maze test and Congo red staining was used to observe deposition of amyloid substance in the hippocampus. The expression of GFAP and IGF-1 in the hippocampus was observed by immunohistochemistry. RESULTS Diabetes decreased cognition, increased amyloid substance and GFAP expression, and decreased IGF-1 expression in the hippocampus (all p-values < 0.05). Sevoflurane administration intensified and celastrol decreased these changes (all p-values < 0.05). CONCLUSIONS Sev/DM rats showed cognitive and neurochemical changes similar to those seen in senile dementia. Celastrol decreased these changes and should be evaluated further as a possible clinical agent in dementia.
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Affiliation(s)
- Wei-Tao Liao
- Department of Anaesthesiology, Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Xiao-Yu Xiao
- Department of Anaesthesiology, Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Yinaxian Zhu
- Department of Anaesthesiology, Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
| | - Shao-Peng Zhou
- Department of Anaesthesiology, Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, China
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226
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Humanes B, Camaño S, Lara JM, Sabbisetti V, González-Nicolás MÁ, Bonventre JV, Tejedor A, Lázaro A. Cisplatin-induced renal inflammation is ameliorated by cilastatin nephroprotection. Nephrol Dial Transplant 2018; 32:1645-1655. [PMID: 28340076 DOI: 10.1093/ndt/gfx005] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 12/29/2016] [Indexed: 12/17/2022] Open
Abstract
Background Cisplatin is a potent chemotherapeutic drug whose nephrotoxic effect is a major complication and a dose-limiting factor for antitumoral therapy. There is much evidence that inflammation contributes to the pathogenesis of cisplatin-induced nephrotoxicity. We found that cilastatin, a renal dehydropeptidase-I inhibitor, has protective effects in vitro and in vivo against cisplatin-induced renal damage by inhibiting apoptosis and oxidation. Here, we investigated the potential use of cilastatin to protect against cisplatin-induced kidney injury and inflammation in rats. Methods Male Wistar rats were divided into four groups: control, cilastatin-control, cisplatin and cilastatin-cisplatin. Nephrotoxicity was assessed 5 days after administration of cisplatin based on blood urea nitrogen, creatinine, glomerular filtration rate (GFR), kidney injury molecule (KIM)-1 and renal morphology. Inflammation was measured using the electrophoretic mobility shift assay, immunohistochemical studies and evaluation of inflammatory mediators. Results Compared with the control rats, cisplatin-administered rats were affected by significant proximal tubule damage, decreased GFR, increased production of inflammatory mediators and elevations in urea, creatinine and tissue KIM-1 levels. Cilastatin prevented these changes in renal function and ameliorated histological damage in cisplatin-administered animals. Cilastatin also reduced pro-inflammatory cytokine levels, activation of nuclear factor-κB and CD68-positive cell concentrations. Conclusions Cilastatin reduces cisplatin-induced nephrotoxicity, which is associated with decreased inflammation in vivo. Although the exact role of decreased inflammation in nephroprotection has not been fully elucidated, treatment with cilastatin could be a novel strategy for the prevention of cisplatin-induced acute kidney injury.
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Affiliation(s)
- Blanca Humanes
- Renal Physiopathology Laboratory, Department of Nephrology, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Sonia Camaño
- Renal Physiopathology Laboratory, Department of Nephrology, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Jose Manuel Lara
- Department of Pathology, IiSGM-Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Venkatta Sabbisetti
- Renal Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - María Ángeles González-Nicolás
- Renal Physiopathology Laboratory, Department of Nephrology, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Joseph V Bonventre
- Renal Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Alberto Tejedor
- Renal Physiopathology Laboratory, Department of Nephrology, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Hospital General Universitario Gregorio Marañón, Madrid, Spain.,Department of Medicine, Faculty of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Alberto Lázaro
- Renal Physiopathology Laboratory, Department of Nephrology, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Hospital General Universitario Gregorio Marañón, Madrid, Spain.,Renal Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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227
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Chunzhi G, Zunfeng L, Chengwei Q, Xiangmei B, Jingui Y. Hyperin protects against LPS-induced acute kidney injury by inhibiting TLR4 and NLRP3 signaling pathways. Oncotarget 2018; 7:82602-82608. [PMID: 27813491 PMCID: PMC5347717 DOI: 10.18632/oncotarget.13010] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 09/23/2016] [Indexed: 12/23/2022] Open
Abstract
Hyperin is a flavonoid compound derived from Ericaceae, Guttifera, and Celastraceae that has been shown to have various biological effects, such as anti-inflammatory and anti-oxidant effects. However, there is no evidence to show the protective effects of hyperin on lipopolysaccharide (LPS)-induced acute kidney injury (AKI). Therefore, we investigated the protective effects and mechanism of hyperin on LPS-induced AKI in mice. The levels of TNF-α, IL-6, and IL-1β were tested by ELISA. The effects of hyperin on blood urea nitrogen (BUN) and serum creatinine were also detected. In addition, the expression of TLR4, NF-κB, and NLRP3 were detected by western blot analysis. The results showed that hyperin significantly inhibited LPS-induced TNF-α, IL-6, and IL-1β production. The levels of BUN and creatinine were also suppressed by hyperin. Furthermore, LPS-induced TLR4 expression and NF-κB activation were also inhibited by hyperin. In addition, treatment of hyperin dose-dependently inhibited LPS-induced NLRP3 signaling pathway. In conclusion, the results showed that hyperin inhibited LPS-induced inflammatory response by inhibiting TLR4 and NLRP3 signaling pathways. Hyperin has potential application prospects in the treatment of sepsis-induced AKI.
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Affiliation(s)
- Gong Chunzhi
- Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan, 250012, China.,Department of Anesthesiology, Affiliated Hospital of Binzhou Medical University, Binzhou, 256603, China
| | - Li Zunfeng
- Department of Anesthesiology, Affiliated Hospital of Binzhou Medical University, Binzhou, 256603, China
| | - Qin Chengwei
- Department of Anesthesiology, Affiliated Hospital of Binzhou Medical University, Binzhou, 256603, China
| | - Bu Xiangmei
- Department of Anesthesiology, Affiliated Hospital of Binzhou Medical University, Binzhou, 256603, China
| | - Yu Jingui
- Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan, 250012, China
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228
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Blockade of histone deacetylase 6 protects against cisplatin-induced acute kidney injury. Clin Sci (Lond) 2018; 132:339-359. [PMID: 29358506 DOI: 10.1042/cs20171417] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 01/04/2018] [Accepted: 01/22/2018] [Indexed: 12/21/2022]
Abstract
Histone deacetylase 6 (HDAC6) has been shown to be involved in various pathological conditions, including cancer, neurodegenerative disorders and inflammatory diseases. Nonetheless, its specific role in drug-induced nephrotoxicity is poorly understood. Cisplatin (dichlorodiamino platinum) belongs to an inorganic platinum - fundamental chemotherapeutic drug utilized in the therapy of various solid malignant tumors. However, the use of cisplatin is extremely limited by obvious side effects, for instance bone marrow suppression and nephrotoxicity. In the present study, we utilized a murine model of cisplatin-induced acute kidney injury (AKI) and a highly selective inhibitor of HDAC6, tubastatin A (TA), to assess the role of HDAC6 in nephrotoxicity and its associated mechanisms. Cisplatin-induced AKI was accompanied by increased expression and activation of HDAC6; blocking HDAC6 with TA lessened renal dysfunction, attenuated renal pathological changes, reduced expression of neutrophil gelatinase-associated lipocalin and kidney injury molecule 1, and decreased tubular cell apoptosis. In cultured human epithelial cells, TA or HDAC6 siRNA treatment also inhibited cisplatin-induced apoptosis. Mechanistic studies demonstrated that cisplatin treatment induced phosphorylation of AKT and loss of E-cadherin in the nephrotoxic kidney, and administration of TA enhanced AKT phosphorylation and preserved E-cadherin expression. HDAC6 inhibition also potentiated autophagy as evidenced by increased expression of autophagy-related gene (Atg) 7 (Atg7), Beclin-1, and decreased renal oxidative stress as demonstrated by up-regulation of superoxide dismutase (SOD) activity and down-regulation of malondialdehyde levels. Moreover, TA was effective in inhibiting nuclear factor-κ B (NF-κB) phosphorylation and suppressing the expression of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6). Collectively, these data provide strong evidence that HDAC6 inhibition is protective against cisplatin-induced AKI and suggest that HDAC6 may be a potential therapeutic target for AKI treatment.
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229
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Chen L, Deng H, Cui H, Fang J, Zuo Z, Deng J, Li Y, Wang X, Zhao L. Inflammatory responses and inflammation-associated diseases in organs. Oncotarget 2018; 9:7204-7218. [PMID: 29467962 PMCID: PMC5805548 DOI: 10.18632/oncotarget.23208] [Citation(s) in RCA: 2175] [Impact Index Per Article: 362.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 11/03/2017] [Indexed: 02/07/2023] Open
Abstract
Inflammation is a biological response of the immune system that can be triggered by a variety of factors, including pathogens, damaged cells and toxic compounds. These factors may induce acute and/or chronic inflammatory responses in the heart, pancreas, liver, kidney, lung, brain, intestinal tract and reproductive system, potentially leading to tissue damage or disease. Both infectious and non-infectious agents and cell damage activate inflammatory cells and trigger inflammatory signaling pathways, most commonly the NF-κB, MAPK, and JAK-STAT pathways. Here, we review inflammatory responses within organs, focusing on the etiology of inflammation, inflammatory response mechanisms, resolution of inflammation, and organ-specific inflammatory responses.
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Affiliation(s)
- Linlin Chen
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Huidan Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
| | - Hengmin Cui
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang, Chengdu 611130, China
| | - Jing Fang
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang, Chengdu 611130, China
| | - Zhicai Zuo
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang, Chengdu 611130, China
| | - Junliang Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang, Chengdu 611130, China
| | - Yinglun Li
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang, Chengdu 611130, China
| | - Xun Wang
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang, Chengdu 611130, China
| | - Ling Zhao
- College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu 611130, China
- Key Laboratory of Animal Diseases and Environmental Hazards of Sichuan Province, Sichuan Agriculture University, Wenjiang, Chengdu 611130, China
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230
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Yaribeygi H, Farrokhi FR, Rezaee R, Sahebkar A. Oxidative stress induces renal failure: A review of possible molecular pathways. J Cell Biochem 2018; 119:2990-2998. [DOI: 10.1002/jcb.26450] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 10/17/2017] [Indexed: 01/04/2023]
Affiliation(s)
- Habib Yaribeygi
- Health Research CenterBaqiyatallah University of Medical SciencesTehranIran
- Chronic Kidney Diseases Research CenterShahid Beheshti University of Medical SciencesTehranIran
| | - Farin R. Farrokhi
- Chronic Kidney Diseases Research CenterShahid Beheshti University of Medical SciencesTehranIran
| | - Ramin Rezaee
- Clinical Research Unit, Faculty of MedicineMashhad University of Medical SciencesMashhadIran
| | - Amirhossein Sahebkar
- Biotechnology Research CenterInstitute of Pharmaceutical TechnologyMashhad University of Medical SciencesMashhadIran
- School of PharmacyMashhad University of Medical SciencesMashhadIran
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231
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Chun P. Therapeutic effects of histone deacetylase inhibitors on kidney disease. Arch Pharm Res 2017; 41:162-183. [PMID: 29230688 DOI: 10.1007/s12272-017-0998-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/26/2017] [Indexed: 12/12/2022]
Abstract
Increasing evidence has shown the involvement of histone deacetylases (HDACs) in the development and progression of various renal diseases, highlighting its inhibition as a promising therapeutic strategy to prevent kidney diseases. Accordingly, numerous studies have shown that HDAC inhibitors protect the kidneys from various diseases through their effects on multiple pathways, such as suppression of transforming growth factor-β signaling pathway and nuclear factor-κB signaling pathways, augmentation of apoptosis, and inhibition of angiogenesis. To develop more effective and less toxic isoform-selective HDAC inhibitors and further improve clinical outcomes, it is necessary to identify and understand the mechanisms involved in the pathogenesis and progression of renal diseases. This review focuses on the roles of HDAC inhibitors and the mechanisms involved in their therapeutic effects in experimental models of kidney diseases including glomerulosclerosis, tubulointerstitial fibrosis, glomerular and tubulointerstitial inflammation, lupus nephritis, polycystic kidney disease, and renal cell carcinoma (RCC).
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Affiliation(s)
- Pusoon Chun
- College of Pharmacy and Inje Institute of Pharmaceutical Sciences and Research, Inje University, 197 Inje-ro, Gimhae, Gyeongnam, 50834, Republic of Korea.
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232
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Dai XY, Huang XR, Zhou L, Zhang L, Fu P, Manthey C, Nikolic-Paterson DJ, Lan HY. Targeting c-fms kinase attenuates chronic aristolochic acid nephropathy in mice. Oncotarget 2017; 7:10841-56. [PMID: 26909597 PMCID: PMC4905443 DOI: 10.18632/oncotarget.7460] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 02/09/2016] [Indexed: 02/05/2023] Open
Abstract
Aristolochic acid nephropathy (AAN) is a progressive kidney disease caused by some Chinese herbal medicines, but treatment remains ineffective. Macrophage accumulation is an early feature in human and experimental AAN; however, the role of macrophages in chronic AAN is unknown. We report here that targeting macrophages with fms-I, a selective inhibitor of the tyrosine kinase activity of the macrophage colony-stimulating factor receptor, suppressed disease progression in a mouse model of chronic AAN. Treatment with fms-I (10mg/kg/BID) from day 0 to 28 (prevention study) or from day 14 to 28 (intervention study) substantially inhibited macrophage accumulation and significantly improved renal dysfunction including a reduction in proteinuria and tubular damage. Progressive interstitial fibrosis (myofibroblast accumulation and collagen deposition) and renal inflammation (increased expression of MCP-1, MIF, and TNF-α) were also attenuated by fms-I treatment. These protective effects involved inhibition of TGF-β/Smad3 and NF-kB signaling. In conclusion, the present study establishes that macrophages are key inflammatory cells that exacerbates progressive tubulointerstitial damage in chronic AAN via mechanisms associated with TGF-β/Smad3-mediated renal fibrosis and NF-κB-driven renal inflammation. Targeting macrophages via a c-fms kinase inhibitor may represent a novel therapy for chronic AAN.
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Affiliation(s)
- Xiao Y Dai
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, and Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China.,Division of Nephrology, Mianyang Central Hospital, Mianyang, China.,Division of Nephrology, West China Hospital of Sichuan University, Chengdu, China
| | - Xiao R Huang
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, and Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
| | - Li Zhou
- Division of Nephrology, West China Hospital of Sichuan University, Chengdu, China
| | - Lin Zhang
- Division of Nephrology, Mianyang Central Hospital, Mianyang, China
| | - Ping Fu
- Division of Nephrology, West China Hospital of Sichuan University, Chengdu, China
| | - Carl Manthey
- Janssen Research and Development, LLC, Radnor, PA, USA
| | - David J Nikolic-Paterson
- Department of Nephrology, Monash Health and Monash University Department of Medicine, Clayton, VIC, Australia
| | - Hui Y Lan
- Department of Medicine and Therapeutics, Li Ka Shing Institute of Health Sciences, and Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong, China
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233
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Abou Daher A, El Jalkh T, Eid AA, Fornoni A, Marples B, Zeidan YH. Translational Aspects of Sphingolipid Metabolism in Renal Disorders. Int J Mol Sci 2017; 18:ijms18122528. [PMID: 29186855 PMCID: PMC5751131 DOI: 10.3390/ijms18122528] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 11/16/2017] [Accepted: 11/17/2017] [Indexed: 12/13/2022] Open
Abstract
Sphingolipids, long thought to be passive components of biological membranes with merely a structural role, have proved throughout the past decade to be major players in the pathogenesis of many human diseases. The study and characterization of several genetic disorders like Fabry’s and Tay Sachs, where sphingolipid metabolism is disrupted, leading to a systemic array of clinical symptoms, have indeed helped elucidate and appreciate the importance of sphingolipids and their metabolites as active signaling molecules. In addition to being involved in dynamic cellular processes like apoptosis, senescence and differentiation, sphingolipids are implicated in critical physiological functions such as immune responses and pathophysiological conditions like inflammation and insulin resistance. Interestingly, the kidneys are among the most sensitive organ systems to sphingolipid alterations, rendering these molecules and the enzymes involved in their metabolism, promising therapeutic targets for numerous nephropathic complications that stand behind podocyte injury and renal failure.
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Affiliation(s)
- Alaa Abou Daher
- Department of Anatomy, Cell Biology and Physiology, Faculty of Medicine, American University of Beirut, Beirut 1107 2020, Lebanon.
| | - Tatiana El Jalkh
- Department of Anatomy, Cell Biology and Physiology, Faculty of Medicine, American University of Beirut, Beirut 1107 2020, Lebanon.
| | - Assaad A Eid
- Department of Anatomy, Cell Biology and Physiology, Faculty of Medicine, American University of Beirut, Beirut 1107 2020, Lebanon.
| | - Alessia Fornoni
- Department of Medicine, Peggy and Harold Katz Family Drug Discovery Center, University of Miami, Miami, FL 33136, USA.
| | - Brian Marples
- Department of Radiation Oncology, Miller School of Medicine/Sylvester Cancer Center, University of Miami, Miami, FL 33136, USA.
| | - Youssef H Zeidan
- Department of Anatomy, Cell Biology and Physiology, Faculty of Medicine, American University of Beirut, Beirut 1107 2020, Lebanon.
- Department of Radiation Oncology, American University of Beirut Medical Center, Beirut 1107 2020, Lebanon.
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234
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Suryavanshi SV, Kulkarni YA. NF-κβ: A Potential Target in the Management of Vascular Complications of Diabetes. Front Pharmacol 2017; 8:798. [PMID: 29163178 PMCID: PMC5681994 DOI: 10.3389/fphar.2017.00798] [Citation(s) in RCA: 218] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Accepted: 10/23/2017] [Indexed: 01/01/2023] Open
Abstract
Diabetes is a metabolic disorder affecting large percentage of population worldwide. NF-κβ plays key role in pathogenesis of vascular complications of diabetes. Persistent hyperglycemia activates NF-κβ that triggers expression of various cytokines, chemokines and cell adhesion molecules. Over-expression of TNF-α, interleukins, TGF-β, Bcl2 and other pro-inflammatory proteins and pro-apoptotic genes by NF-κβ is key risk factor in vascular dysfunction. NF-κβ over-expression also triggers calcification of endothelial cells leading to endothelial dysfunction and further vascular complications. Inhibition of NF-κβ pro-inflammatory pathway is upcoming novel target for management of vascular complications of diabetes. Various natural and synthetic inhibitors of NF-κβ have been studied in management of diabetic complications. Recent preclinical and clinical studies validate NF-κβ as promising target in the management of vascular complications of diabetes.
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Affiliation(s)
- Sachin V Suryavanshi
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM's Narsee Monjee Institute of Management Studies, Mumbai, India
| | - Yogesh A Kulkarni
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM's Narsee Monjee Institute of Management Studies, Mumbai, India
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235
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Yamashita M, Yoshida T, Hayashi M. Podocyte NF-κB is dispensable for the pathogenesis of renal ischemia-reperfusion injury. Physiol Rep 2017; 4:4/16/e12912. [PMID: 27565904 PMCID: PMC5002916 DOI: 10.14814/phy2.12912] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 08/01/2016] [Indexed: 11/24/2022] Open
Abstract
Podocytes play a central role in the formation of the glomerular filtration barrier in the kidney, and their dysfunction has been shown to result in multiple proteinuric kidney diseases. In this study, we sought to determine whether NF-κB, a proinflammatory signaling, within podocytes was involved in renal ischemia-reperfusion (I/R) injury. Podocyte-specific IκBΔN transgenic (Pod-IκBΔN) mice, in which NF-κB was inhibited specifically in podocytes, were generated by the Cre-loxP technology, and their phenotype was compared with control mice after bilateral renal ischemia. The effect of systemic administration of a NF-κB inhibitor, pyrrolidinedithiocarbamate (PDTC), on renal I/R injury was also examined. Pod-IκBΔN mice were phenotypically normal before surgery. Following renal I/R injury, serum concentrations of urea nitrogen and creatinine were elevated in both Pod-IκBΔN and control mice to a similar extent, whereas PDTC treatment attenuated the elevation of these parameters. Renal histological damage in I/R-injured Pod-IκBΔN mice was also similar to I/R-injured control mice, although it was improved by PDTC treatment. Moreover, I/R induced accumulation of inflammatory cells, such as neutrophils and macrophages, was reduced by PDTC treatment, but not by podocyte-specific NF-κB inhibition. These results provide evidence that the NF-κB activity in podocytes does not contribute to the pathogenesis of renal I/R injury.
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Affiliation(s)
- Maho Yamashita
- Apheresis and Dialysis Center, School of Medicine, Keio University, Tokyo, Japan
| | - Tadashi Yoshida
- Apheresis and Dialysis Center, School of Medicine, Keio University, Tokyo, Japan Department of General Medicine, School of Medicine, Keio University, Tokyo, Japan
| | - Matsuhiko Hayashi
- Apheresis and Dialysis Center, School of Medicine, Keio University, Tokyo, Japan Department of General Medicine, School of Medicine, Keio University, Tokyo, Japan
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236
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Zhao SQ, Xue ZZ, Wang LZ. HMGB1, TGF-β and NF-κB are associated with chronic allograft nephropathy. Exp Ther Med 2017; 14:6138-6146. [PMID: 29285170 DOI: 10.3892/etm.2017.5319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 03/03/2017] [Indexed: 12/18/2022] Open
Abstract
The present study aimed to investigate the association between high mobility group protein B1 (HMGB1), transforming growth factor-β1 (TGF-β1), nuclear factor-κB (NF-κB) and chronic allograft nephropathy (CAN) and to identify the clinical significance of HMGB1, TGF-β1, NF-κB on patients with CAN. Between September 2012 and November 2014, 27 patients with CAN diagnosed by biopsy were enrolled in the present study and a further 30 patients that underwent nephrectomy following trauma were selected as the control group. Immunohistochemical staining with HMGB1, TGF-β1 and NF-κB expression in the renal tissues, and western blot analysis were used to measure the relative expression of HMGB1, TGF-β1 and NF-κB. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was used to estimate the relative expression of HMGB1, TGF-β1 and NF-κB mRNA. Statistical analysis was used to calculate the association between HMGB1, TGF-β1 and NF-κB expression and CAN grade. Immunohistochemical staining demonstrated that HMGB1, TGF-β1 and NF-κB had markedly positive expression rates in renal tubular epithelial cell cytoplasm and membranes in CAN renal tissues, and the positive rates of HMGB1, TGF-β1 and NF-κB increased with the aggravation of CAN pathological grade (I, II and III). The results of western blot analysis indicated that the expression levels of HMGB1, TGF-β1 and NF-κB were significantly higher in the CAN group, compared with the normal group (P<0.05), and the expression levels increased with the progression of CAN grade. A positive association among HMGB1, TGF-β1 and NF-κB expression was identified. RT-qPCR analysis demonstrated that the expression of HMGB1, TGF-β1 and NF-κB mRNA in the CAN group was significantly higher than in the normal group (P<0.05), and the relative expression level of HMGB1, TGF-β1 and NF-κB mRNA not only increased with the aggravation of CAN grade, but was also positively associated with the expression of HMGB1, TGF-β1 and NF-κB, respectively. The abnormal expression of HMGB1, TGF-β1 and NF-κB is therefore, an important manifestation of CAN and the expression of HMGB1, TGF-β1 and NF-κB mRNA in the renal tissues are significantly associated with CAN pathological progression. HMGB1, TGF-β1 and NF-κB may form a signaling pathway that leads to the occurrence of CAN, which induces renal interstitial fibrosis.
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Affiliation(s)
- Shi-Qi Zhao
- Emergency Intensive Care Unit, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
| | - Zhen-Zhen Xue
- Emergency Intensive Care Unit, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
| | - Ling-Zhang Wang
- Emergency Intensive Care Unit, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
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237
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Li T, Lee W, Hara H, Long C, Ezzelarab M, Ayares D, Huang H, Wang Y, Cooper DK, Iwase H. An Investigation of Extracellular Histones in Pig-To-Baboon Organ Xenotransplantation. Transplantation 2017; 101:2330-2339. [PMID: 28157735 PMCID: PMC5856196 DOI: 10.1097/tp.0000000000001676] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Serum (extracellular) histone levels are increased in inflammatory states and in the presence of coagulation dysfunction, for example, trauma, chemical/ischemic injury, infection. There is increasing evidence of a systemic inflammatory response associated with the presence of a pig xenograft in a nonhuman primate. We evaluated extracellular histone levels in baboons with various pig xenografts. METHODS We measured serum histones in baboons with pig heterotopic heart (n = 8), life-supporting kidney (n = 5), orthotopic liver (n = 4), and artery patch (n = 9) grafts by enzyme-linked immunosorbent assay. C-reactive protein (CRP), free triiodothyronine (fT3), serum amyloid A (SAA), and platelet counts were also measured, all of which may provide an indication of an inflammatory state. We investigated the effect of histones on platelet aggregation and on cytotoxicity of pig cells in vitro. RESULTS Serum histones increased when baboons developed consumptive coagulopathy (eg, thrombocytopenia) or infection. CRP levels tended to be higher and fT3 levels lower when consumptive coagulopathy developed. Measurement of SAA correlated fairly well with CRP and indicated the state of inflammation. Treatment of the recipient with tocilizumab reduced the level of serum histones, CRP, and SAA, and increased the level of fT3 and platelet counts. In vitro, histone-induced platelet aggregation and endothelial cell apoptosis were both significantly reduced by the NF-κB pathway inhibitor, parthenolide. CONCLUSIONS These noninvasive assays may be useful for monitoring the health status of nonhuman primate recipients of pig organ grafts and may help in management after xenotransplantation. Tocilizumab and NF-κB inhibitors might prove valuable in reducing the inflammatory response to a pig xenograft.
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Affiliation(s)
- Tao Li
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA
- Center for Kidney Transplantation, Second Affiliated Hospital of the University of South China, Hengyang, Hunan, China
| | - Whayoung Lee
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Hidetaka Hara
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Cassandra Long
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Mohamed Ezzelarab
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | | | - Hai Huang
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Yi Wang
- Center for Kidney Transplantation, Second Affiliated Hospital of the University of South China, Hengyang, Hunan, China
| | - David K.C. Cooper
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Hayato Iwase
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh, Pittsburgh, PA, USA
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238
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Abreu CC, Cardozo LFMF, Stockler-Pinto MB, Esgalhado M, Barboza JE, Frauches R, Mafra D. Does resistance exercise performed during dialysis modulate Nrf2 and NF-κB in patients with chronic kidney disease? Life Sci 2017; 188:192-197. [PMID: 28887058 DOI: 10.1016/j.lfs.2017.09.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 08/15/2017] [Accepted: 09/05/2017] [Indexed: 12/17/2022]
Abstract
Studies have shown that nuclear factor erythroid 2-related factor 2 (Nrf2) can be modulated by physical exercise. However, the impact of resistance exercise has never been investigated in patients with chronic kidney disease (CKD). The aim of this study was to evaluate the effects of resistance exercise programs on the expression of transcription factors Nrf2 and nuclear factor κB (NF-κB) in CKD patients on hemodialysis (HD). Patients on an HD program were randomly assigned to an exercise group of 25 patients (54.5% women, aged 45.7±15.2years and time on dialysis=71.2±45.5months) or a control group of 19 patients who had no exercise intervention (61.5% women, aged 42.5±13.5years and time on dialysis=70.1±49.9months). A strength exercise program was performed 3 times a week during the HD sessions. Peripheral blood mononuclear cells were isolated and processed for the expression of Nrf2 and NF-κB by quantitative real-time polymerase chain reaction 3months before and after the exercise program. Using an enzyme-linked immunosorbent assay, the activity of glutathione peroxidase (GPx) as well as the products of high-sensitivity C-reactive protein and nitric oxide (NO) were assessed. Nrf2 expression (ranging from 0.86±0.4 to 1.76±0.8) and GPx activity were significantly increased after exercise intervention. In the exercise group, no difference in the levels of NO was observed; however, there was a significant reduction in the control group. In conclusion, these data suggest that resistance exercises seem to be capable of inducing Nrf2 activation in CKD patients on HD.
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Affiliation(s)
- C C Abreu
- Cardiovascular Sciences Graduate Program, Federal University Fluminense (UFF), Niterói, Rio de Janeiro (RJ), Brazil.
| | - L F M F Cardozo
- Cardiovascular Sciences Graduate Program, Federal University Fluminense (UFF), Niterói, Rio de Janeiro (RJ), Brazil
| | - M B Stockler-Pinto
- Cardiovascular Sciences Graduate Program, Federal University Fluminense (UFF), Niterói, Rio de Janeiro (RJ), Brazil
| | - M Esgalhado
- Cardiovascular Sciences Graduate Program, Federal University Fluminense (UFF), Niterói, Rio de Janeiro (RJ), Brazil
| | - J E Barboza
- Medical Sciences Graduate Program, Federal Fluminense University (UFF), Niterói, Rio de Janeiro (RJ), Brazil
| | - R Frauches
- Cardiovascular Sciences Graduate Program, Federal University Fluminense (UFF), Niterói, Rio de Janeiro (RJ), Brazil
| | - D Mafra
- Cardiovascular Sciences Graduate Program, Federal University Fluminense (UFF), Niterói, Rio de Janeiro (RJ), Brazil; Medical Sciences Graduate Program, Federal Fluminense University (UFF), Niterói, Rio de Janeiro (RJ), Brazil
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239
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Tuzcu M, Orhan C, Muz OE, Sahin N, Juturu V, Sahin K. Lutein and zeaxanthin isomers modulates lipid metabolism and the inflammatory state of retina in obesity-induced high-fat diet rodent model. BMC Ophthalmol 2017; 17:129. [PMID: 28738845 PMCID: PMC5525211 DOI: 10.1186/s12886-017-0524-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 07/13/2017] [Indexed: 01/30/2023] Open
Abstract
Background Several studies associated high-fat intakes with a high incidence of age-related macular degeneration (AMD). Lutein and Zeaxanthin isomers (L/Zi) may counteract reactive oxygen species produced by oxidative stress. The present study was conducted to determine the possible effects of L/Zi administration on lipid profile, protein genes associated with oxidative stress and inflammation pathways in the obesity induced by a high-fat diet (HFD) in rodents. Methods Twenty-eight male Wistar rats were allocated into four groups as follows: (i) Control, (ii) Control + L/Zi, (iii) High Fat Diet (HFD), and (iv) HFD+ L/Z. L/Zi was administrated for 8 weeks at a daily dose of 100 mg/kg BW. Results L/Zi administration significantly reduced insulin and free fatty acid (FFA) levels (P < 0.001) and ameliorated the oxidative damage by reducing malondialdehyde (MDA) concentration and increasing antioxidant enzymes activities of retina induced by HFD. In addition, supplementation decreased the levels of vascular endothelial growth factor (VEGF), inducible nitric oxide synthase (iNOS), nuclear factor-kappa B (NF-κB) and intercellular adhesion molecule-1 (ICAM) (P < 0.001, respectively) and improved nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase 1 (HO-1) gene proteins in retinal tissues (P < 0.001). Conclusion Rats fed with HFD exhibited increased oxidative stress and upregulation of inflammatory indicators. However, L/Zi supplementation modulates genes involved oxidative stress and inflammation including NF-κB and Nrf2 signaling pathways in the retina which may contribute to ameliorating retinal damage induced by HFD.
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Affiliation(s)
- Mehmet Tuzcu
- Faculty of Science, Division of Biology, Firat University, Elazig, Turkey
| | - Cemal Orhan
- Faculty of Veterinary, Department of Animal Nutrition, Firat University, Elazig, Turkey
| | - Omer Ersin Muz
- Department of Ophthalmology, Elazig Education and Research Hospital, Elazig, Turkey
| | - Nurhan Sahin
- Faculty of Veterinary, Department of Animal Nutrition, Firat University, Elazig, Turkey
| | - Vijaya Juturu
- Research and Development, OmniActive Health Technologies Inc., Morristown, USA
| | - Kazım Sahin
- Faculty of Veterinary, Department of Animal Nutrition, Firat University, Elazig, Turkey.
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Liang G, Song L, Chen Z, Qian Y, Xie J, Zhao L, Lin Q, Zhu G, Tan Y, Li X, Mohammadi M, Huang Z. Fibroblast growth factor 1 ameliorates diabetic nephropathy by an anti-inflammatory mechanism. Kidney Int 2017; 93:95-109. [PMID: 28750927 DOI: 10.1016/j.kint.2017.05.013] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 04/30/2017] [Accepted: 05/04/2017] [Indexed: 11/15/2022]
Abstract
Inflammation plays a central role in the etiology of diabetic nephropathy, a global health issue. We observed a significant reduction in the renal expression of fibroblast growth factor 1, a known mitogen and insulin sensitizer, in patients with diabetic nephropathy and in mouse models implying that fibroblast growth factor 1 possesses beneficial anti-inflammatory and renoprotective activities in vivo. To test this possibility, we investigated the effects of chronic intraperitoneal administration of fibroblast growth factor 1 into both the streptozotocin-induced type 1 diabetes and db/db type 2 diabetes models. Indeed, recombinant fibroblast growth factor 1 significantly suppressed renal inflammation (i.e., cytokines, macrophage infiltration), glomerular and tubular damage, and renal dysfunction in both type 1 and type 2 diabetes mice. Fibroblast growth factor 1 was able to correct the elevated blood glucose levels in type 2 but not in type 1 diabetic mice, suggesting that the anti-inflammatory effect of fibroblast growth factor 1 was independent of its glucose-lowering activity. The mechanistic study demonstrated that fibroblast growth factor 1-mediated inhibition of the renal inflammation in vivo was accompanied by attenuation of the nuclear factor κB and c-Jun N-terminal kinase signaling pathways, further validated in vitro using cultured glomerular mesangial cells and podocytes. Thus, fibroblast growth factor 1 holds great promise for developing new treatments for diabetic nephropathy through countering inflammatory signaling cascades in injured renal tissue.
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Affiliation(s)
- Guang Liang
- School of Pharmaceutical Sciences and Center for Structural Biology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Lintao Song
- School of Pharmaceutical Sciences and Center for Structural Biology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zilu Chen
- School of Pharmaceutical Sciences and Center for Structural Biology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yuanyuan Qian
- School of Pharmaceutical Sciences and Center for Structural Biology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Junjun Xie
- School of Pharmaceutical Sciences and Center for Structural Biology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Longwei Zhao
- School of Pharmaceutical Sciences and Center for Structural Biology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Qian Lin
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Guanghui Zhu
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yi Tan
- Chinese-American Research Institute for Diabetic Complications, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xiaokun Li
- School of Pharmaceutical Sciences and Center for Structural Biology, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Moosa Mohammadi
- Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York, USA
| | - Zhifeng Huang
- School of Pharmaceutical Sciences and Center for Structural Biology, Wenzhou Medical University, Wenzhou, Zhejiang, China.
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Poveda J, Sanz AB, Carrasco S, Ruiz-Ortega M, Cannata-Ortiz P, Sanchez-Niño MD, Ortiz A. Bcl3: a regulator of NF-κB inducible by TWEAK in acute kidney injury with anti-inflammatory and antiapoptotic properties in tubular cells. Exp Mol Med 2017; 49:e352. [PMID: 28684863 PMCID: PMC5565957 DOI: 10.1038/emm.2017.89] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/21/2016] [Accepted: 01/12/2017] [Indexed: 01/09/2023] Open
Abstract
Acute kidney injury (AKI) is characterized by tubular cell death and interstitial inflammation. TWEAK promotes experimental kidney injury and activates the transcription factor NF-κB, a key regulator of genes involved in cell survival and inflammatory response. In search of potential therapeutic targets for AKI, we compared a transcriptomics database of NF-κB-related genes from murine AKI-kidneys with a transcriptomics database of TWEAK-stimulated cultured tubular cells. Four out of twenty-four (17%) genes were significantly upregulated (false discovery rate, FDR<0.05), while nine out of twenty-four (37%) genes were significantly upregulated at FDR <0.1 in both databases. Bcl3 was the top upregulated NF-κB-related gene in experimental AKI and one of the most upregulated genes in TWEAK-stimulated tubular cells. Quantitative reverse transcription PCR (qRT-PCR), western blot and immunohistochemistry confirmed Bcl3 upregulation in both experimental conditions and localized increased Bcl3 expression to tubular cells in AKI. Transcriptomics database analysis revealed increased Bcl3 expression in numerous experimental and human kidney conditions. Furthermore, systemic TWEAK administration increased kidney Bcl3 expression. In cultured tubular cells, targeting Bcl3 by siRNA resulted in the magnification of TWEAK-induced NF-κB transcriptional activity, chemokine upregulation and Klotho downregulation, and in the sensitization to cell death induced by TWEAK/TNFα/interferon-γ. In contrast, Bcl3 overexpression decreased NF-κB transcriptional activity, inflammatory response and cell death while dampening the decrease in Klotho expression. In conclusion, Bcl3 expressed in response to TWEAK stimulation decreases TWEAK-induced inflammatory and lethal responses. Therefore, therapeutic upregulation of Bcl3 activity should be explored in kidney disease because it has advantages over chemical inhibitors of NF-κB that are known to prevent inflammatory responses but can also sensitize the cells to apoptosis.
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Affiliation(s)
- Jonay Poveda
- Unidad de Dialisis, IIS-Fundación Jiménez Díaz, School of Medicine, Universidad Autónoma de Madrid, Fundación Renal Iñigo Álvarez de Toledo-IRSIN and REDINREN, Madrid, Spain
| | - Ana B Sanz
- Unidad de Dialisis, IIS-Fundación Jiménez Díaz, School of Medicine, Universidad Autónoma de Madrid, Fundación Renal Iñigo Álvarez de Toledo-IRSIN and REDINREN, Madrid, Spain
| | - Susana Carrasco
- Unidad de Dialisis, IIS-Fundación Jiménez Díaz, School of Medicine, Universidad Autónoma de Madrid, Fundación Renal Iñigo Álvarez de Toledo-IRSIN and REDINREN, Madrid, Spain
| | - Marta Ruiz-Ortega
- Unidad de Dialisis, IIS-Fundación Jiménez Díaz, School of Medicine, Universidad Autónoma de Madrid, Fundación Renal Iñigo Álvarez de Toledo-IRSIN and REDINREN, Madrid, Spain
| | - Pablo Cannata-Ortiz
- Unidad de Dialisis, IIS-Fundación Jiménez Díaz, School of Medicine, Universidad Autónoma de Madrid, Fundación Renal Iñigo Álvarez de Toledo-IRSIN and REDINREN, Madrid, Spain
| | - Maria D Sanchez-Niño
- Unidad de Dialisis, IIS-Fundación Jiménez Díaz, School of Medicine, Universidad Autónoma de Madrid, Fundación Renal Iñigo Álvarez de Toledo-IRSIN and REDINREN, Madrid, Spain
| | - Alberto Ortiz
- Unidad de Dialisis, IIS-Fundación Jiménez Díaz, School of Medicine, Universidad Autónoma de Madrid, Fundación Renal Iñigo Álvarez de Toledo-IRSIN and REDINREN, Madrid, Spain
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242
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Choi M, Schreiber A, Eulenberg-Gustavus C, Scheidereit C, Kamps J, Kettritz R. Endothelial NF- κB Blockade Abrogates ANCA-Induced GN. J Am Soc Nephrol 2017; 28:3191-3204. [PMID: 28687535 DOI: 10.1681/asn.2016060690] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 05/18/2017] [Indexed: 01/15/2023] Open
Abstract
ANCA-associated vasculitis (AAV) is a highly inflammatory condition in which ANCA-activated neutrophils interact with the endothelium, resulting in necrotizing vasculitis. We tested the hypothesis that endothelial NF-κB mediates necrotizing crescentic GN (NCGN) and provides a specific treatment target. Reanalysis of kidneys from previously examined murine NCGN disease models revealed NF-κB activation in affected kidneys, mostly as a p50/p65 heterodimer, and increased renal expression of NF-κB-dependent tumor necrosis factor α (TNF-α). NF-κB activation positively correlated with crescent formation, and nuclear phospho-p65 staining showed NF-κB activation within CD31-expressing endothelial cells (ECs) in affected glomeruli. Therefore, we studied the effect of ANCA on NF-κB activation in neutrophil/EC cocultures in vitro ANCA did not activate NF-κB in primed human neutrophils, but ANCA-stimulated primed neutrophils activated NF-κB in ECs, at least in part via TNF-α release. This effect increased endothelial gene transcription and protein production of NF-κB-regulated interleukin-8. Moreover, upregulation of endothelial NF-κB promoted neutrophil adhesion to EC monolayers, an effect that was inhibited by a specific IKKβ inhibitor. In a murine NCGN model, prophylactic application of E-selectin-targeted immunoliposomes packed with p65 siRNA to downregulate endothelial NF-κB significantly reduced urine abnormalities, renal myeloid cell influx, and NCGN. Increased glomerular endothelial phospho-p65 staining in patients with AAV indicated that NF-κB is activated in human NCGN also. We suggest that ANCA-stimulated neutrophils activate endothelial NF-κB, which contributes to NCGN and provides a potential therapeutic target in AAV.
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Affiliation(s)
- Mira Choi
- Experimental and Clinical Research Center, the Charité Universitätsmedizin Berlin and the Max-Delbrück Center for Molecular Medicine at the Charité, Berlin, Germany; .,Nephrology and Internal Intensive Care, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Adrian Schreiber
- Experimental and Clinical Research Center, the Charité Universitätsmedizin Berlin and the Max-Delbrück Center for Molecular Medicine at the Charité, Berlin, Germany.,Nephrology and Internal Intensive Care, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Claudia Eulenberg-Gustavus
- Experimental and Clinical Research Center, the Charité Universitätsmedizin Berlin and the Max-Delbrück Center for Molecular Medicine at the Charité, Berlin, Germany
| | | | - Jan Kamps
- Department of Pathology and Medical Biology, Medical Biology Section, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Ralph Kettritz
- Experimental and Clinical Research Center, the Charité Universitätsmedizin Berlin and the Max-Delbrück Center for Molecular Medicine at the Charité, Berlin, Germany.,Nephrology and Internal Intensive Care, Charité Universitätsmedizin Berlin, Berlin, Germany
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243
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Sodium fluoride induces renal inflammatory responses by activating NF-κB signaling pathway and reducing anti-inflammatory cytokine expression in mice. Oncotarget 2017; 8:80192-80207. [PMID: 29113295 PMCID: PMC5655190 DOI: 10.18632/oncotarget.19006] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 06/20/2017] [Indexed: 12/25/2022] Open
Abstract
Fluoride is widely distributed in the environment and often results in adverse health effects on animals and human beings. It has been proved that fluoride can induce inflammatory responses in vitro. However, very limited reports are focused on fluoride-induced inflammatory responses in vivo. In this study, mice were used to investigate sodium fluoride (NaF) induced renal inflammatory responses and the potential mechanism by using the methods of pathology, biochemistry, enzyme-linked immunosorbent assay (ELISA), quantitative real-time polymerase chain reaction (qRT-PCR) and western blot. A total of 240 ICR mice were randomly divided into four equal groups: the control group and three experimental groups (NaF was given orally at the dose of 0, 12, 24 and 48 mg/kg body weight for 42 days, respectively). The results showed that NaF in excess of 12 mg/kg induced the renal histopathological lesions, and inflammatory responses via the activation of nuclear factor-kappa B (NF-κB) signaling pathway and the reduction of anti-inflammatory cytokines expression. The activation of NF-κB signaling pathway was characterized by increasing the nitric oxide (NO) and prostaglandin E2 (PGE2) contents, inducible nitric oxide synthase (iNOS) activities and mRNA expression levels, and the mRNA and protein expression levels of cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-6 (IL-6) and interleukin-8 (IL-8) in three NaF-treated groups. Concurrently, the mRNA and protein expression levels of the anti-inflammatory cytokines including interleukin-4 (IL-4) and interleukin-10 (IL-10) were decreased in three experimental groups when compared with those in the control group.
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244
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Johnson FL, Patel NSA, Purvis GSD, Chiazza F, Chen J, Sordi R, Hache G, Merezhko VV, Collino M, Yaqoob MM, Thiemermann C. Inhibition of IκB Kinase at 24 Hours After Acute Kidney Injury Improves Recovery of Renal Function and Attenuates Fibrosis. J Am Heart Assoc 2017; 6:JAHA.116.005092. [PMID: 28673900 PMCID: PMC5586267 DOI: 10.1161/jaha.116.005092] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background Acute kidney injury (AKI) is a major risk factor for the development of chronic kidney disease. Nuclear factor‐κB is a nuclear transcription factor activated post‐ischemia, responsible for the transcription of proinflammatory proteins. The role of nuclear factor‐κB in the renal fibrosis post‐AKI is unknown. Methods and Results We used a rat model of AKI caused by unilateral nephrectomy plus contralateral ischemia (30 minutes) and reperfusion injury (up to 28 days) to show impairment of renal function (peak: 24 hours), activation of nuclear factor‐κB (peak: 48 hours), and fibrosis (28 days). In humans, AKI is diagnosed by a rise in serum creatinine. We have discovered that the IκB kinase inhibitor IKK16 (even when given at peak serum creatinine) still improved functional and structural recovery and reduced myofibroblast formation, macrophage infiltration, transforming growth factor‐β expression, and Smad2/3 phosphorylation. AKI resulted in fibrosis within 28 days (Sirius red staining, expression of fibronectin), which was abolished by IKK16. To confirm the efficacy of IKK16 in a more severe model of fibrosis, animals were subject to 14 days of unilateral ureteral obstruction, resulting in tubulointerstitial fibrosis, myofibroblast formation, and macrophage infiltration, all of which were attenuated by IKK16. Conclusions Inhibition of IκB kinase at peak creatinine improves functional recovery, reduces further injury, and prevents fibrosis.
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Affiliation(s)
- Florence L Johnson
- Barts and The London School of Medicine & Dentistry, The William Harvey Research Institute, Queen Mary University of London, United Kingdom
| | - Nimesh S A Patel
- Barts and The London School of Medicine & Dentistry, The William Harvey Research Institute, Queen Mary University of London, United Kingdom
| | - Gareth S D Purvis
- Barts and The London School of Medicine & Dentistry, The William Harvey Research Institute, Queen Mary University of London, United Kingdom
| | - Fausto Chiazza
- Department of Drug Science and Technology, University of Turin, Italy
| | - Jianmin Chen
- Barts and The London School of Medicine & Dentistry, The William Harvey Research Institute, Queen Mary University of London, United Kingdom
| | - Regina Sordi
- Barts and The London School of Medicine & Dentistry, The William Harvey Research Institute, Queen Mary University of London, United Kingdom.,Department of Molecular Biology and Genetics, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Guillaume Hache
- Barts and The London School of Medicine & Dentistry, The William Harvey Research Institute, Queen Mary University of London, United Kingdom.,Aix Marseille Universite, UMR_S 1076, Vascular Research Center of Marseille, France
| | - Viktoria V Merezhko
- Barts and The London School of Medicine & Dentistry, The William Harvey Research Institute, Queen Mary University of London, United Kingdom
| | - Massimo Collino
- Department of Drug Science and Technology, University of Turin, Italy
| | - Muhammed M Yaqoob
- Barts and The London School of Medicine & Dentistry, The William Harvey Research Institute, Queen Mary University of London, United Kingdom
| | - Christoph Thiemermann
- Barts and The London School of Medicine & Dentistry, The William Harvey Research Institute, Queen Mary University of London, United Kingdom
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245
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Li A, Zhang X, Shu M, Wu M, Wang J, Zhang J, Wang R, Li P, Wang Y. Arctigenin suppresses renal interstitial fibrosis in a rat model of obstructive nephropathy. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2017; 30:28-41. [PMID: 28545667 DOI: 10.1016/j.phymed.2017.03.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 12/28/2016] [Accepted: 03/09/2017] [Indexed: 05/21/2023]
Abstract
BACKGROUND Renal tubulointerstitial fibrosis (TIF) is commonly the final result of a variety of progressive injuries and leads to end-stage renal disease. There are few therapeutic agents currently available for retarding the development of renal TIF. PURPOSE The aim of the present study is to evaluate the role of arctigenin (ATG), a lignan component derived from dried burdock (Arctium lappa L.) fruits, in protecting the kidney against injury by unilateral ureteral obstruction (UUO) in rats. METHODS Rats were subjected to UUO and then administered with vehicle, ATG (1 and 3mg/kg/d), or losartan (20mg/kg/d) for 11 consecutive days. The renoprotective effects of ATG were evaluated by histological examination and multiple biochemical assays. RESULTS Our results suggest that ATG significantly protected the kidney from injury by reducing tubular dilatation, epithelial atrophy, collagen deposition, and tubulointerstitial compartment expansion. ATG administration dramatically decreased macrophage (CD68-positive cell) infiltration. Meanwhile, ATG down-regulated the mRNA levels of pro-inflammatory chemokine monocyte chemoattractant protein-1 (MCP-1) and cytokines, including tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interferon-γ (IFN-γ), in the obstructed kidneys. This was associated with decreased activation of nuclear factor κB (NF-κB). ATG attenuated UUO-induced oxidative stress by increasing the activity of renal manganese superoxide dismutase (SOD2), leading to reduced levels of lipid peroxidation. Furthermore, ATG inhibited the epithelial-mesenchymal transition (EMT) of renal tubules by reducing the abundance of transforming growth factor-β1 (TGF-β1) and its type I receptor, suppressing Smad2/3 phosphorylation and nuclear translocation, and up-regulating Smad7 expression. Notably, the efficacy of ATG in renal protection was comparable or even superior to losartan. CONCLUSION ATG could protect the kidney from UUO-induced injury and fibrogenesis by suppressing inflammation, oxidative stress, and tubular EMT, thus supporting the potential role of ATG in renal fibrosis treatment.
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Affiliation(s)
- Ao Li
- College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China; State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Xiaoxun Zhang
- College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Mao Shu
- College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Mingjun Wu
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, China
| | - Jun Wang
- College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Jingyao Zhang
- College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
| | - Rui Wang
- College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China.
| | - Peng Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China.
| | - Yitao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
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246
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Martin-Sanchez D, Poveda J, Fontecha-Barriuso M, Ruiz-Andres O, Sanchez-Niño MD, Ruiz-Ortega M, Ortiz A, Sanz AB. Targeting of regulated necrosis in kidney disease. Nefrologia 2017. [PMID: 28647049 DOI: 10.1016/j.nefro.2017.04.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The term acute tubular necrosis was thought to represent a misnomer derived from morphological studies of human necropsies and necrosis was thought to represent an unregulated passive form of cell death which was not amenable to therapeutic manipulation. Recent advances have improved our understanding of cell death in acute kidney injury. First, apoptosis results in cell loss, but does not trigger an inflammatory response. However, clumsy attempts at interfering with apoptosis (e.g. certain caspase inhibitors) may trigger necrosis and, thus, inflammation-mediated kidney injury. Second, and most revolutionary, the concept of regulated necrosis emerged. Several modalities of regulated necrosis were described, such as necroptosis, ferroptosis, pyroptosis and mitochondria permeability transition regulated necrosis. Similar to apoptosis, regulated necrosis is modulated by specific molecules that behave as therapeutic targets. Contrary to apoptosis, regulated necrosis may be extremely pro-inflammatory and, importantly for kidney transplantation, immunogenic. Furthermore, regulated necrosis may trigger synchronized necrosis, in which all cells within a given tubule die in a synchronized manner. We now review the different modalities of regulated necrosis, the evidence for a role in diverse forms of kidney injury and the new opportunities for therapeutic intervention.
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Affiliation(s)
- Diego Martin-Sanchez
- Research Institute-Fundación Jiménez Díaz, Autónoma University, Madrid, Spain; IRSIN, Madrid, Spain; REDINREN, Madrid, Spain
| | - Jonay Poveda
- Research Institute-Fundación Jiménez Díaz, Autónoma University, Madrid, Spain; IRSIN, Madrid, Spain; REDINREN, Madrid, Spain
| | - Miguel Fontecha-Barriuso
- Research Institute-Fundación Jiménez Díaz, Autónoma University, Madrid, Spain; IRSIN, Madrid, Spain; REDINREN, Madrid, Spain
| | - Olga Ruiz-Andres
- Research Institute-Fundación Jiménez Díaz, Autónoma University, Madrid, Spain; IRSIN, Madrid, Spain; REDINREN, Madrid, Spain
| | - María Dolores Sanchez-Niño
- Research Institute-Fundación Jiménez Díaz, Autónoma University, Madrid, Spain; IRSIN, Madrid, Spain; REDINREN, Madrid, Spain
| | - Marta Ruiz-Ortega
- Research Institute-Fundación Jiménez Díaz, Autónoma University, Madrid, Spain; IRSIN, Madrid, Spain; REDINREN, Madrid, Spain
| | - Alberto Ortiz
- Research Institute-Fundación Jiménez Díaz, Autónoma University, Madrid, Spain; IRSIN, Madrid, Spain; REDINREN, Madrid, Spain
| | - Ana Belén Sanz
- Research Institute-Fundación Jiménez Díaz, Autónoma University, Madrid, Spain; IRSIN, Madrid, Spain; REDINREN, Madrid, Spain.
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247
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The NF-κB1 is a key regulator of acute but not chronic renal injury. Cell Death Dis 2017; 8:e2883. [PMID: 28617440 PMCID: PMC5584573 DOI: 10.1038/cddis.2017.233] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 03/29/2017] [Accepted: 04/19/2017] [Indexed: 12/24/2022]
Abstract
The NF-κB family of transcription factors is important for many cellular functions, in particular initiation and propagation of inflammatory and immune responses. However, recent data has suggested that different subunits of the NF-κB family can suppress the inflammatory response. NF-κB1, from the locus nfκb1, can inhibit transcription, acting as a brake to the recognised pro-inflammatory activity of other NF-κB subunits. We tested the function of NF-κB1 in an acute (nephrotoxic serum (NTS) nephritis) and a chronic (unilateral ureteric obstruction (UUO)) model of renal injury using NF-κB1 (nfκb1−/−) knockout mice. Deficiency in NF-κB1 increased the severity of glomerular injury in NTS-induced nephritis and was associated with greater proteinuria and persistent pro-inflammatory gene expression. Induction of disease in bone marrow chimeric mice demonstrated that the absence of NF-κB1 in either bone marrow or glomerular cells increased the severity of injury. Early after UUO (day 3) there was more severe histological injury in the nfκb1−/− mice but by day 10, disease severity was equivalent in wild type and nfκb1−/− mice. In conclusion, NF-κB1 modifies acute inflammatory renal injury but does not influence chronic fibrotic injury.
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248
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Hong JN, Li WW, Wang LL, Guo H, Jiang Y, Gao YJ, Tu PF, Wang XM. Jiangtang decoction ameliorate diabetic nephropathy through the regulation of PI3K/Akt-mediated NF-κB pathways in KK-Ay mice. Chin Med 2017; 12:13. [PMID: 28529539 PMCID: PMC5437490 DOI: 10.1186/s13020-017-0134-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 05/05/2017] [Indexed: 12/27/2022] Open
Abstract
Background Jiangtang decoction (JTD) is a China patented drug which contains Euphorbia humifusa Willd, Salvia miltiorrhiza Bunge, Astragalus mongholicus Bunge, Anemarrhena asphodeloides Bunge, and Coptis chinensis Franch. For decades, it has also been used clinically to treat diabetic nephropathy (DN) effectively; however, the associated mechanisms remain unknown. Thus, the present study aimed to examine the protective efficacy of JTD in DN and elucidate the underlying molecular mechanisms. Methods A diabetic model using KK-Ay mice received a daily administration of JTD for 12 weeks. Body weight, blood glucose, triglycerides (TGs), total cholesterol (TC), urea nitrogen (UN), creatinine (Cr), and microalbumin/urine creatinine (MA/UCREA) was measured every 4 weeks. Furthermore, on the day of the sacrifice, blood, urine, and kidneys were collected to assess renal function according to general parameters. Pathological staining was performed to evaluate the protective renal effect of JTD. In addition, the levels of inflammatory cytokines (tumor necrosis factor-α [TNF-α], interleukin [IL]-6 and intercellular adhesion molecule [ICAM]-1), insulin receptor substrate [IRS]-1, advanced glycation end products [AGEs], and receptor of glycation end products [RAGE] were assessed. Finally, the phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway and involvement of nuclear factor-κB (NF-κB) was further analyzed. Results After 12 weeks of metformin and JTD administration, the mice exhibited a significant amelioration in glucose and lipid metabolism dysfunction, reduced morphological changes in the renal tissue, decreased urinary albumin excretion, and normalized creatinine clearance. JTD treatment also reduced the accumulation of AGEs and RAGE, up-regulated IRS-1, and increased the phosphorylation of both PI3K (p85) and Akt, indicating that the activation of the PI3K/Akt signaling pathway was involved. Additionally, JTD administration reduced the elevated levels of renal inflammatory mediators and decreased the phosphorylation of NF-κB p65. Conclusions These results demonstrate that JTD might reduce inflammation in DN through the PI3K/Akt and NF-κB signaling pathways. Electronic supplementary material The online version of this article (doi:10.1186/s13020-017-0134-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jin-Ni Hong
- Integrated Laboratory of Traditional Chinese Medicine and Western Medicine, Peking University First Hospital, Beijing, People's Republic of China
| | - Wei-Wei Li
- Integrated Laboratory of Traditional Chinese Medicine and Western Medicine, Peking University First Hospital, Beijing, People's Republic of China
| | - Lin-Lin Wang
- Integrated Laboratory of Traditional Chinese Medicine and Western Medicine, Peking University First Hospital, Beijing, People's Republic of China
| | - Hao Guo
- Institute of Basic Medical Sciences, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, People's Republic of China
| | - Yong Jiang
- School of Pharmaceutical Science, Peking University, Beijing, People's Republic of China
| | - Yun-Jia Gao
- School of Pharmaceutical Science, Peking University, Beijing, People's Republic of China
| | - Peng-Fei Tu
- School of Pharmaceutical Science, Peking University, Beijing, People's Republic of China
| | - Xue-Mei Wang
- Integrated Laboratory of Traditional Chinese Medicine and Western Medicine, Peking University First Hospital, Beijing, People's Republic of China
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Aroune D, Libdiri F, Leboucher S, Maouche B, Marco S, El-Aoufi S. Changes in the NFκB and E-cadherin expression are associated to diabetic nephropathy in Psammomys obesus. Saudi J Biol Sci 2017; 24:843-850. [PMID: 28490956 PMCID: PMC5415148 DOI: 10.1016/j.sjbs.2016.05.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 04/29/2016] [Accepted: 05/10/2016] [Indexed: 01/23/2023] Open
Abstract
Diabetes mellitus is a major leading cause of end-stage renal failure, characterized by kidney inflammation and glomerular dysfunction, in worldwide. Kidney inflammation is associated to modifications in the expression levels of pro-inflammatory molecules, such as nuclear factor-κB (NFκB) and adhesion molecules, such as E-cadherin, leading to glomerular dysfunction. However, the relationships between these two processes in human diabetic nephropathy remain an open question. Since Psammomys obesus is an ideal animal model to study diabetes mellitus temporal evolution, we have used this model to study the correlation between kidney structural changes and modification on the expression levels of NFκB and E-cadherin over time. We have demonstrated that, after induction of diabetes metillus with a high energy diet (HED), P. obesus develops the characteristic symptoms of human disease. In detail, at the third month nuclear factor NFκB is expressed in the kidney of diabetic P. obesus and structural renal changes, such as mesangial expansion or interstitial fibrosis, are detectable; at 6 months, thickening of glomerular basement membrane, glomerular sclerosis, and tubular atrophy occurs; at 9 months, symptoms of the final stages of the disease, such as down expression of E-cadherin, happens. As a result of these observations we proposed that NFκB activation and E-cadherin down-expression are interlinked on diabetic kidney disease (DKD).
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Affiliation(s)
- Djamila Aroune
- Laboratoire de Biologie et de Physiologie des Organismes/MMDED, Faculté des Sciences Biologiques, USTHB, El-Alia, Dar El Beida, Algeria
| | - Farid Libdiri
- Laboratoire de Biologie et de Physiologie des Organismes/MMDED, Faculté des Sciences Biologiques, USTHB, El-Alia, Dar El Beida, Algeria
| | - Sophie Leboucher
- Institut Curie, Centre de Recherche, Plateforme d’Histologie, Orsay F-91405, France
| | - Boubekeur Maouche
- Laboratoire de Biologie et de Physiologie des Organismes/MMDED, Faculté des Sciences Biologiques, USTHB, El-Alia, Dar El Beida, Algeria
| | - Sergio Marco
- Institut Curie, Centre de Recherche, Orsay F-91405, France
- INSERM, U1196, Orsay F-91405, France
- CNRS, UMR9187, Orsay F-91405, France
- Univ. Paris-Sud, Université Paris-Saclay, Saint-Aubin F-91190, France
| | - Salima El-Aoufi
- Laboratoire de Biologie et de Physiologie des Organismes/MMDED, Faculté des Sciences Biologiques, USTHB, El-Alia, Dar El Beida, Algeria
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250
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Dutta RK, Kondeti VK, Sharma I, Chandel NS, Quaggin SE, Kanwar YS. Beneficial Effects of Myo-Inositol Oxygenase Deficiency in Cisplatin-Induced AKI. J Am Soc Nephrol 2017; 28:1421-1436. [PMID: 27895157 PMCID: PMC5407728 DOI: 10.1681/asn.2016070744] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Accepted: 10/17/2016] [Indexed: 11/03/2022] Open
Abstract
Overexpression of the proximal tubular enzyme myo-inositol oxygenase (MIOX) induces oxidant stress in vitro However, the relevance of MIOX to tubular pathobiology remains enigmatic. To investigate the role of MIOX in cisplatin-induced tubular AKI, we generated conditional MIOX-overexpressing transgenic (MIOX-TG) mice and MIOX-knockout (MIOX-/-) mice with tubule-specific MIOX overexpression or knockout, respectively. Compared with cisplatin-treated wild-type (WT) mice, cisplatin-treated MIOX-TG mice had even greater increases in urea, creatinine, and KIM-1 levels and more tubular injury and apoptosis, but these effects were attenuated in cisplatin-treated MIOX-/- mice. Similarly, MIOX-TG mice had the highest and MIOX-/- mice had the lowest renal levels of Bax, cleaved caspase-3, and NADPH oxidase-4 expression and reactive oxygen species (ROS) generation after cisplatin treatment. In vitro, cisplatin dose-dependently increased ROS generation in LLC-PK1 cells. Furthermore, MIOX overexpression in these cells accentuated cisplatin-induced ROS generation and perturbations in the ratio of GSH to oxidized GSH, whereas MIOX-siRNA or N-acetyl cysteine treatment attenuated these effects. Additionally, the cisplatin-induced enhancement of p53 activation, NF-κB binding to DNA, and NF-κB nuclear translocation in WT mice was exacerbated in MIOX-TG mice but absent in MIOX-/- mice. In vitro, MIOX-siRNA or NAC treatment reduced the dose-dependent increase in p53 expression induced by cisplatin. We also observed a remarkable influx of inflammatory cells and upregulation of cytokines in kidneys of cisplatin-treated MIOX-TG mice. Finally, analysis of genomic DNA in WT mice revealed cisplatin-induced hypomethylation of the MIOX promoter. These data suggest that MIOX overexpression exacerbates, whereas MIOX gene disruption protects against, cisplatin-induced AKI.
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Affiliation(s)
| | | | | | | | | | - Yashpal S Kanwar
- Departments of Pathology and
- Medicine, Northwestern University, Chicago, Illinois
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