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Bieniaś B, Sikora P. Urinary metalloproteinases and tissue inhibitors of metalloproteinases as potential early biomarkers for renal fibrosis in children with nephrotic syndrome. Medicine (Baltimore) 2018; 97:e9964. [PMID: 29465592 PMCID: PMC5841961 DOI: 10.1097/md.0000000000009964] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
In chronic glomerulopathies, renal fibrosis (RF) results from extracellular matrix remodeling processes regulated by matrix metalloproteinases (MMP) and tissue inhibitors of metalloproteinases (TIMP). We assessed urinary (u-) and serum (s-) MMP-1, -2, -9, TIMP-1, -2 concentrations and MMP-1, -2, -9/TIMP-1, -2 ratios in children with nephrotic syndrome. Steroid-dependent and steroid-resistant nephrotic patients (SDNS-Ps and SRNS-Ps, respectively) were compared with respect to measured parameters. The correlations of measured parameters with magnitude of proteinuria and histopathological diagnosis were determined.The study comprised of 39 children with nephrotic syndrome and 20 healthy controls. Twenty-three patients had SDNS and 16 ones-SRNS. The concentrations MMPs and TIMPs were measured using enzyme-linked immunosorbent assay.In nephrotic patients, higher u-MMP-1, -2, -9/creatinine ratios and u-TIMP-1, -2/creatinine ratios were observed as compared with controls. Nephrotic children were also characterized by lower MMP-1, -2, -9/TIMP-1 ratios. In SRNS-Ps, u-MMP-2/creatinine ratio and u-TIMP-1/creatinine ratio were higher as compared with SDNS-Ps. Magnitude of proteinuria correlated positively with u-MMP-2/creatinine ratio and negatively with u-MMP-2/TIMP-1. In minimal change disease (MCD) patients as compared with those with other glomerulopathies, there was higher u-MMP-2/TIMP-1 ratio. No significant differences in s-MMPs, s-TIMPs, and s-MMPs/TIMPs ratios between nephrotic patients and controls were observed.Children with nephrotic syndrome are characterized by increased u-fibrotic biomarkers excretions. U-MMP-1, -2, -9 excretions and u-MMP-2/TIMP-1 ratio may become potential early biomarkers for RF. SRNS-Ps, those with heavier proteinuria and other than MCD glomerulopathies, seem to be more susceptible to early RF.
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Santos SAAD, Porto Amorim EM, Ribeiro LM, Rinaldi JC, Delella FK, Justulin LA, Felisbino SL. Hyperglycemic condition during puberty increases collagen fibers deposition in the prostatic stroma and reduces MMP-2 activity. Biochem Biophys Res Commun 2017; 493:1581-1586. [DOI: 10.1016/j.bbrc.2017.10.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 10/04/2017] [Indexed: 11/26/2022]
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53
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Naudin C, Smith B, Bond DR, Dun MD, Scott RJ, Ashman LK, Weidenhofer J, Roselli S. Characterization of the early molecular changes in the glomeruli of Cd151 -/- mice highlights induction of mindin and MMP-10. Sci Rep 2017; 7:15987. [PMID: 29167507 PMCID: PMC5700190 DOI: 10.1038/s41598-017-15993-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 10/26/2017] [Indexed: 01/06/2023] Open
Abstract
In humans and FVB/N mice, loss of functional tetraspanin CD151 is associated with glomerular disease characterised by early onset proteinuria and ultrastructural thickening and splitting of the glomerular basement membrane (GBM). To gain insight into the molecular mechanisms associated with disease development, we characterised the glomerular gene expression profile at an early stage of disease progression in FVB/N Cd151 -/- mice compared to Cd151 +/+ controls. This study identified 72 up-regulated and 183 down-regulated genes in FVB/N Cd151 -/- compared to Cd151 +/+ glomeruli (p < 0.05). Further analysis highlighted induction of the matrix metalloprotease MMP-10 and the extracellular matrix protein mindin (encoded by Spon2) in the diseased FVB/N Cd151 -/- GBM that did not occur in the C57BL/6 diseased-resistant strain. Interestingly, mindin was also detected in urinary samples of FVB/N Cd151 -/- mice, underlining its potential value as a biomarker for glomerular diseases associated with GBM alterations. Gene set enrichment and pathway analysis of the microarray dataset showed enrichment in axon guidance and actin cytoskeleton signalling pathways as well as activation of inflammatory pathways. Given the known function of mindin, its early expression in the diseased GBM could represent a trigger of both further podocyte cytoskeletal changes and inflammation, thereby playing a key role in the mechanisms of disease progression.
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Affiliation(s)
- Crystal Naudin
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton, New South Wales, Australia.,Emory University, Atlanta, Georgia, USA
| | - Brian Smith
- School of Mathematics and Physical Sciences, University of Newcastle, Newcastle, New South Wales, Australia
| | - Danielle R Bond
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton, New South Wales, Australia
| | - Matthew D Dun
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton, New South Wales, Australia
| | - Rodney J Scott
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton, New South Wales, Australia.,Hunter Area Pathology Service, John Hunter Hospital, New Lambton, New South Wales, Australia
| | - Leonie K Ashman
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton, New South Wales, Australia
| | - Judith Weidenhofer
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton, New South Wales, Australia
| | - Séverine Roselli
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle, Newcastle, New South Wales, Australia. .,Hunter Medical Research Institute, New Lambton, New South Wales, Australia.
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Krochmal M, Kontostathi G, Magalhães P, Makridakis M, Klein J, Husi H, Leierer J, Mayer G, Bascands JL, Denis C, Zoidakis J, Zürbig P, Delles C, Schanstra JP, Mischak H, Vlahou A. Urinary peptidomics analysis reveals proteases involved in diabetic nephropathy. Sci Rep 2017; 7:15160. [PMID: 29123184 PMCID: PMC5680307 DOI: 10.1038/s41598-017-15359-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 10/24/2017] [Indexed: 12/13/2022] Open
Abstract
Mechanisms underlying the onset and progression of nephropathy in diabetic patients are not fully elucidated. Deregulation of proteolytic systems is a known path leading to disease manifestation, therefore we hypothesized that proteases aberrantly expressed in diabetic nephropathy (DN) may be involved in the generation of DN-associated peptides in urine. We compared urinary peptide profiles of DN patients (macroalbuminuric, n = 121) to diabetic patients with no evidence of DN (normoalbuminuric, n = 118). 302 sequenced, differentially expressed peptides (adjusted p-value < 0.05) were analysed with the Proteasix tool predicting proteases potentially involved in their generation. Activity change was estimated based on the change in abundance of the investigated peptides. Predictions were correlated with transcriptomics (Nephroseq) and relevant protein expression data from the literature. This analysis yielded seventeen proteases, including multiple forms of MMPs, cathepsin D and K, kallikrein 4 and proprotein convertases. The activity of MMP-2 and MMP-9, predicted to be decreased in DN, was investigated using zymography in a DN mouse model confirming the predictions. Collectively, this proof-of-concept study links urine peptidomics to molecular changes at the tissue level, building hypotheses for further investigation in DN and providing a workflow with potential applications to other diseases.
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Affiliation(s)
| | | | - Pedro Magalhães
- Mosaiques Diagnostics GmbH, Hannover, Germany
- Department of Pediatric Nephrology, Hannover Medical School, Hannover, Germany
| | | | - Julie Klein
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France
- Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Holger Husi
- Department of Diabetes and Cardiovascular Science, University of the Highlands and Islands, Centre for Health Science, Inverness, IV2 3JH, UK
| | - Johannes Leierer
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Innsbruck, Austria
| | - Gert Mayer
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Innsbruck, Austria
| | - Jean-Loup Bascands
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1188 - Université de La, Réunion, France
| | - Colette Denis
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France
- Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Jerome Zoidakis
- Biomedical Research Foundation Academy of Athens, Athens, Greece
| | | | - Christian Delles
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow, G12 8TA, UK
| | - Joost P Schanstra
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France
- Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Harald Mischak
- Mosaiques Diagnostics GmbH, Hannover, Germany
- Institute of Cardiovascular and Medical Sciences, BHF Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, Glasgow, G12 8TA, UK
| | - Antonia Vlahou
- Biomedical Research Foundation Academy of Athens, Athens, Greece.
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55
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Cheng J, Liu HP, Lee CC, Chen MY, Lin WY, Tsai FJ. Matrix metalloproteinase 14 modulates diabetes and Alzheimer's disease cross-talk: a meta-analysis. Neurol Sci 2017; 39:267-274. [PMID: 29103177 DOI: 10.1007/s10072-017-3166-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 10/20/2017] [Indexed: 12/22/2022]
Abstract
Diabetes mellitus is associated with dementia, but whether diabetes is associated with Alzheimer's disease remains controversial. Alzheimer's disease is characterized by amyloid beta aggregation. We hypothesized that genes, involved in amyloid beta degradation, may be altered due to diabetes and thus participate in progression of Alzheimer's disease. Expression profiling of amyloid beta-degrading enzymes in streptozotocin-induced diabetic mice and their correlation with expression of amyloid precursor protein in hippocampus of Alzheimer's disease patients were accessed. We found that matrix metalloproteinase 14 decreased in brain but not in other tissues of streptozotocin-induced diabetic mice, and was negatively correlated with expression of amyloid precursor protein in hippocampus of Alzheimer's disease patients. These findings suggested matrix metalloproteinase 14 may link insulin-deficient diabetes to Alzheimer's disease.
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Affiliation(s)
- Jack Cheng
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan.,Department of Medical Research, China Medical University Hospital, Taichung, 40447, Taiwan
| | - Hsin-Ping Liu
- Graduate Institute of Acupuncture Science, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan
| | - Cheng-Chun Lee
- School of Medicine, College of Medicine, China Medical University, Taichung, 40402, Taiwan
| | - Mei-Ying Chen
- Department of Environmental Engineering, National Chung Hsing University, Taichung, 402, Taiwan
| | - Wei-Yong Lin
- Graduate Institute of Integrated Medicine, College of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan. .,Department of Medical Research, China Medical University Hospital, Taichung, 40447, Taiwan.
| | - Fuu-Jen Tsai
- Department of Medical Research, China Medical University Hospital, Taichung, 40447, Taiwan. .,School of Chinese Medicine, China Medical University, Taichung, 40402, Taiwan. .,Department of Biotechnology, Asia University, Taichung, 41354, Taiwan. .,Children's Medical Center, China Medical University Hospital, Taichung, 40447, Taiwan.
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56
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P-407-induced Mouse Model of Dose-controlled Hyperlipidemia and Atherosclerosis: 25 Years Later. J Cardiovasc Pharmacol 2017; 70:339-352. [DOI: 10.1097/fjc.0000000000000522] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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57
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Cui S, Zhu Y, Du J, Khan MN, Wang B, Wei J, Cheng JW, Gordon JR, Mu Y, Li F. CXCL8 Antagonist Improves Diabetic Nephropathy in Male Mice With Diabetes and Attenuates High Glucose-Induced Mesangial Injury. Endocrinology 2017; 158:1671-1684. [PMID: 28387853 DOI: 10.1210/en.2016-1781] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 03/31/2017] [Indexed: 12/20/2022]
Abstract
Inflammation is recognized as a crucial contribution to diabetic nephropathy (DN). CXCL8 binds to its CXC chemokine receptors (CXCR1 and CXCR2) for recruiting neutrophil infiltration and initiates tissue inflammation. Therefore, we explored the effect of CXCR1 and CXCR2 inhibition on DN. This was achieved by CXCL8(3-72)K11R/G31P (G31P), an antagonist of CXCL8 that has exhibited therapeutic efficacy in inflammatory diseases and malignancies. In this study, we found that renal leukocyte accumulation and rapid increases of CXCL8 occurred in high-fat diet/streptozocin-induced diabetic mice. G31P effectively reduced urine volume, urine albumin/creatinine ratio, blood urea nitrogen, and creatinine clearance rate in mice with diabetes. In addition, renal histopathologic changes including mesangial expansion, glomerulosclerosis, and extracellular matrix deposition were partially moderated in G31P-treated diabetic mice. Furthermore, G31P attenuated renal inflammation and renal fibrosis of diabetic mice by inhibiting proinflammatory and profibrotic elements. G31P also inhibited high glucose-induced inflammatory and fibrotic factor upregulation in human renal mesangial cells. At the molecular level, G31P inhibited activation of CXCR1/2 downstream signaling JAK2/STAT3 and ERK1/2 pathways in in vitro and in vivo experiments. Our results suggest blockade of CXCR1/2 by G31P could confer renoprotective effects that offer potential therapeutic opportunities in DN.
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Affiliation(s)
- Siyuan Cui
- Department of Immunology, Dalian Medical University, Dalian 116011, Liaoning, China
- Department of Endocrinology, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning, China
| | - Yujie Zhu
- Department of Immunology, Dalian Medical University, Dalian 116011, Liaoning, China
| | - Jianling Du
- Department of Endocrinology, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning, China
| | - Muhammad Noman Khan
- Department of Immunology, Dalian Medical University, Dalian 116011, Liaoning, China
| | - Bing Wang
- Department of Immunology, Dalian Medical University, Dalian 116011, Liaoning, China
| | - Jing Wei
- Department of Immunology, Dalian Medical University, Dalian 116011, Liaoning, China
| | - Jya-Wei Cheng
- Institute of Biotechnology, Department of Life Science, National Tsing Hua University, 999079 Hsinchu, Taiwan
| | - John R Gordon
- Division of Respirology, Critical Care and Sleep Medicine, Royal University Hospital, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E5, Canada
| | - Yutian Mu
- College of Biology Science, China Agricultural University, Beijing 100000, China
| | - Fang Li
- Department of Immunology, Dalian Medical University, Dalian 116011, Liaoning, China
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58
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Parrish AR. Matrix Metalloproteinases in Kidney Disease: Role in Pathogenesis and Potential as a Therapeutic Target. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2017; 148:31-65. [PMID: 28662825 DOI: 10.1016/bs.pmbts.2017.03.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Matrix metalloproteinases (MMPs) are large family of proteinases. In addition to a fundamental role in the remodeling of the extracellular matrix, they also cleave a number of cell surface proteins and are involved in multiple cellular processes. MMP activity is regulated via numerous mechanisms, including inhibition by endogenous tissue inhibitors of metalloproteinases (TIMPs). Similar to MMPs, a role for TIMPs has been established in multiple cell signaling pathways. Aberrant expression of MMPs and TIMPS in renal pathophysiology has long been recognized, and with the generation of specific knockout mice, the mechanistic role of several MMPs and TIMPs is becoming more understood and has revealed both pathogenic and protective roles. This chapter will focus on the expression and localization of MMPs and TIMPs in the kidney, as well as summarizing the current information linking these proteins to acute kidney injury and chronic kidney disease. In addition, we will summarize studies suggesting that MMPs and TIMPs may be biomarkers of renal dysfunction and represent novel therapeutic targets to attenuate kidney disease.
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Affiliation(s)
- Alan R Parrish
- School of Medicine, University of Missouri, Columbia, MO, United States.
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59
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Hernández-Hernández ME, Morales-Romero J, Sampieri CL, Luna Lozano DJ, Valencia Lezama IDC, Muñoz Contreras MJ, Rodríguez Hernández A. Association of Urinary Activity of MMP-2 with Microalbuminuria in an Isolated Sample of Subjects Living in High Altitude Rural Locations in México. High Alt Med Biol 2017; 18:209-218. [PMID: 28459597 DOI: 10.1089/ham.2016.0144] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Hernández-Hernández, Magda Elena, Jaime Morales-Romero, Clara Luz Sampieri, Diego Jesús Luna Lozano, Isidra del Carmen Valencia Lezama, Mónica Janett Muñoz Contreras, and Arturo Rodríguez Hernández. Association of urinary activity of MMP-2 with microalbuminuria in an isolated sample of subjects living in high altitude rural locations in México. High Alt Med Biol. 18:209-218, 2017.-Matrix metalloproteinases (MMP) are implicated in remodeling of the renal extracellular matrix. In a cross-sectional study we evaluated renal impairment in general population of high-altitude rural locations in México. Multivariable analysis was performed to identify the association between MMP-2 and MMP-9 and microalbuminuria. Twenty-eight (20.9%) subjects with renal impairment (WRI) and 106 (79.1%) without renal impairment were included. No differences were found relating to sex, location, marital status, current habits, weight, height, body mass index, waist size in males, creatinine in males, and uric acid. In contrast, differences were found among age, level of education, waist size in general and in females, creatinine in general and in females, urinary albumin, urea, glucose, total cholesterol, and triglycerides. Proportions of hypertension, type 2 diabetes mellitus, central abdominal obesity, hypertriglyceridemia, and hypercholesterolemia were greater in the group WRI. Presence of urinary MMP-2 or of both urinary gelatinases and arbitrary unit (AU) values ≥P90 were associated with microalbuminuria. We conclude that AU values ≥P90 of urinary MMP-2 (OR = 20.1, p = 0.002) is associated with microalbuminuria.
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60
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Zhang Y, Sun X, Icli B, Feinberg MW. Emerging Roles for MicroRNAs in Diabetic Microvascular Disease: Novel Targets for Therapy. Endocr Rev 2017. [DOI: 10.1210/er.2016-1122.2017.1.test] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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61
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Zhang Y, Sun X, Icli B, Feinberg MW. Emerging Roles for MicroRNAs in Diabetic Microvascular Disease: Novel Targets for Therapy. Endocr Rev 2017; 38:145-168. [PMID: 28323921 PMCID: PMC5460677 DOI: 10.1210/er.2016-1122] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 02/13/2017] [Indexed: 12/11/2022]
Abstract
Chronic, low-grade systemic inflammation and impaired microvascular function are critical hallmarks in the development of insulin resistance. Accordingly, insulin resistance is a major risk factor for type 2 diabetes and cardiovascular disease. Accumulating studies demonstrate that restoration of impaired function of the diabetic macro- and microvasculature may ameliorate a range of cardiovascular disease states and diabetes-associated complications. In this review, we focus on the emerging role of microRNAs (miRNAs), noncoding RNAs that fine-tune target gene expression and signaling pathways, in insulin-responsive tissues and cell types important for maintaining optimal vascular homeostasis and preventing the sequelae of diabetes-induced end organ injury. We highlight current pathophysiological paradigms of miRNAs and their targets involved in regulating the diabetic microvasculature in a range of diabetes-associated complications such as retinopathy, nephropathy, wound healing, and myocardial injury. We provide an update of the potential use of circulating miRNAs diagnostically in type I or type II diabetes. Finally, we discuss emerging delivery platforms for manipulating miRNA expression or function as the next frontier in therapeutic intervention to improve diabetes-associated microvascular dysfunction and its attendant clinical consequences.
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Affiliation(s)
- Yu Zhang
- Department of Medicine, Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115
- Department of Pharmacology and Pharmacy, University of Hong Kong, Pokfulam, Hong Kong SAR, China, and
| | - Xinghui Sun
- Department of Medicine, Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588
| | - Basak Icli
- Department of Medicine, Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - Mark W. Feinberg
- Department of Medicine, Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02115
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Semiane N, Foufelle F, Ferré P, Hainault I, Ameddah S, Mallek A, Khalkhal A, Dahmani Y. High carbohydrate diet induces nonalcoholic steato-hepatitis (NASH) in a desert gerbil. C R Biol 2017; 340:25-36. [DOI: 10.1016/j.crvi.2016.09.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 09/06/2016] [Accepted: 09/07/2016] [Indexed: 02/07/2023]
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63
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Wang J, Li Y, Xu M, Li D, Wang Y, Qi J, He K. C-peptide exhibits a late induction effect on matrix metallopeptidase-9 in high glucose-stimulated rat mesangial cells. Exp Ther Med 2016; 12:4142-4146. [PMID: 28101192 DOI: 10.3892/etm.2016.3873] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 09/06/2016] [Indexed: 12/12/2022] Open
Abstract
Insufficient matrix metalloproteinase (MMP)-9 and MMP-2 is considered to be a contributor of extracellular matrix (ECM) accumulation in diabetic nephropathy (DN). C-peptide can reverse fibrosis, thus exerting a beneficial effect on DN. Whether C-peptide induces MMP-9 and MMP-2 to reverse ECM accumulation is not clear. In the present study, in order to determine ECM metabolism, rat mesangial cells were treated with high glucose (HG) and C-peptide intervention, then the early and late effects of C-peptide on HG-affected MMP-9 and MMP-2 were evaluated. Firstly, it was confirmed that HG mainly suppressed MMP-9 expression levels. Furthermore, C-peptide treatment induced MMP-9 expression at 6 h and suppressed it at 24 h, revealing the early dual effects of C-peptide on MMP-9 expression. Subsequently, significant increase in MMP-9 expression at 72, 96 and 120 h C-peptide treatment was observed. These changes in MMP-9 protein content confirmed its expression changes following late C-peptide treatment. Furthermore, at 96 and 120 h C-peptide treatment reversed the HG-inhibited MMP-9 secretion, further indicating the late induction effect of C-peptide on MMP-9. The present results demonstrated that C-peptide exerted a late induction effect on MMP-9 in HG-stimulated rat mesangial cells, which may be associated with the underlying mechanism of C-peptide's reversal effects on DN.
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Affiliation(s)
- Junxia Wang
- Department of Molecular Biology, Hebei Key Lab of Laboratory Animal Science, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Yanning Li
- Department of Molecular Biology, Hebei Key Lab of Laboratory Animal Science, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Mingzhi Xu
- Department of Molecular Biology, Hebei Key Lab of Laboratory Animal Science, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Dandan Li
- Department of Biochemistry, Hebei Key Laboratory of Medical Biotechnology, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Yu Wang
- Department of Molecular Biology, Hebei Key Lab of Laboratory Animal Science, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Jinsheng Qi
- Department of Biochemistry, Hebei Key Laboratory of Medical Biotechnology, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Kunyu He
- Department of Biochemistry, Hebei Key Laboratory of Medical Biotechnology, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
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64
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Blutke A, Schneider MR, Wolf E, Wanke R. Growth hormone (GH)-transgenic insulin-like growth factor 1 (IGF1)-deficient mice allow dissociation of excess GH and IGF1 effects on glomerular and tubular growth. Physiol Rep 2016; 4:4/5/e12709. [PMID: 26997624 PMCID: PMC4823598 DOI: 10.14814/phy2.12709] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Growth hormone (GH)‐transgenic mice with permanently elevated systemic levels of GH and insulin‐like growth factor 1 (IGF1) reproducibly develop renal and glomerular hypertrophy and subsequent progressive glomerulosclerosis, finally leading to terminal renal failure. To dissociate IGF1‐dependent and ‐independent effects of GH excess on renal growth and lesion development in vivo, the kidneys of 75 days old IGF1‐deficient (I−/−) and of IGF1‐deficient GH‐transgenic mice (I−/−/G), as well as of GH‐transgenic (G) and nontransgenic wild‐type control mice (I+/+) were examined by quantitative stereological and functional analyses. Both G and I−/−/G mice developed glomerular hypertrophy, hyperplasia of glomerular mesangial and endothelial cells, podocyte hypertrophy and foot process effacement, albuminuria, and glomerulosclerosis. However, I−/−/G mice exhibited less severe glomerular alterations, as compared to G mice. Compared to I+/+ mice, G mice exhibited renal hypertrophy with a significant increase in the number without a change in the size of proximal tubular epithelial (PTE) cells. In contrast, I−/−/G mice did not display significant PTE cell hyperplasia, as compared to I−/− mice. These findings indicate that GH excess stimulates glomerular growth and induces lesions progressing to glomerulosclerosis in the absence of IGF1. In contrast, IGF1 represents an important mediator of GH‐dependent proximal tubular growth in GH‐transgenic mice.
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Affiliation(s)
- Andreas Blutke
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-University Muenchen, Munich, Germany
| | - Marlon R Schneider
- Chair for Molecular Animal Breeding and Biotechnology, Gene Centre Ludwig-Maximilians-University Muenchen, Munich, Germany
| | - Eckhard Wolf
- Chair for Molecular Animal Breeding and Biotechnology, Gene Centre Ludwig-Maximilians-University Muenchen, Munich, Germany
| | - Rüdiger Wanke
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-University Muenchen, Munich, Germany
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Marshall CB. Rethinking glomerular basement membrane thickening in diabetic nephropathy: adaptive or pathogenic? Am J Physiol Renal Physiol 2016; 311:F831-F843. [PMID: 27582102 DOI: 10.1152/ajprenal.00313.2016] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 08/21/2016] [Indexed: 12/12/2022] Open
Abstract
Diabetic nephropathy (DN) is the leading cause of chronic kidney disease in the United States and is a major cause of cardiovascular disease and death. DN develops insidiously over a span of years before clinical manifestations, including microalbuminuria and declining glomerular filtration rate (GFR), are evident. During the clinically silent period, structural lesions develop, including glomerular basement membrane (GBM) thickening, mesangial expansion, and glomerulosclerosis. Once microalbuminuria is clinically apparent, structural lesions are often considerably advanced, and GFR decline may then proceed rapidly toward end-stage kidney disease. Given the current lack of sensitive biomarkers for detecting early DN, a shift in focus toward examining the cellular and molecular basis for the earliest structural change in DN, i.e., GBM thickening, may be warranted. Observed within one to two years following the onset of diabetes, GBM thickening precedes clinically evident albuminuria. In the mature glomerulus, the podocyte is likely key in modifying the GBM, synthesizing and assembling matrix components, both in physiological and pathological states. Podocytes also secrete matrix metalloproteinases, crucial mediators in extracellular matrix turnover. Studies have shown that the critical podocyte-GBM interface is disrupted in the diabetic milieu. Just as healthy podocytes are essential for maintaining the normal GBM structure and function, injured podocytes likely have a fundamental role in upsetting the balance between the GBM's synthetic and degradative pathways. This article will explore the biological significance of GBM thickening in DN by reviewing what is known about the GBM's formation, its maintenance during health, and its disruption in DN.
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Affiliation(s)
- Caroline B Marshall
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama; and Department of Veterans Affairs Medical Center, Birmingham, Alabama
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Matrix Metalloproteinase-9 -1562C/T Gene Polymorphism Is Associated with Diabetic Nephropathy. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1627143. [PMID: 27631001 PMCID: PMC5007315 DOI: 10.1155/2016/1627143] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 07/25/2016] [Indexed: 12/15/2022]
Abstract
To investigate the association between the metalloproteinase-9 (MMP9) −1562C/T polymorphism and diabetic nephropathy (DN) in Han Chinese, the patients with type 2 diabetes were collected and divided into the non-DN (NDN) and DN groups; controls were recruited. Genotype and allele frequencies were assessed using polymerase chain reaction and restriction fragment length polymorphism. Results showed that SBP, DBP, HbA1c, UAER, Cr, BUN, TG, and TC were higher in the DN group compared with the control and NDN groups. SBP, HbA1c, and TC in DN patients with the TT and CT genotypes were lower than in those with CC. Compared with controls, the frequency of the T allele in the DN group was significantly lower. The MMP9 −1562C allele, SBP, Cr, BUN, TG, and TC were independent risk factors for DN. All of the above suggested that the MMP9 −1562C/T polymorphism was associated with DN in Han Chinese.
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Gonçalves NP, Gonçalves P, Magalhães J, Ventosa M, Coelho AV, Saraiva MJ. Tissue remodeling after interference RNA mediated knockdown of transthyretin in a familial amyloidotic polyneuropathy mouse model. Neurobiol Aging 2016; 47:91-101. [PMID: 27568093 DOI: 10.1016/j.neurobiolaging.2016.07.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 07/22/2016] [Accepted: 07/24/2016] [Indexed: 12/11/2022]
Abstract
Transthyretin (TTR) deposition in the peripheral nervous system is the hallmark of familial amyloidotic polyneuropathy (FAP). Currently, liver transplantation is the only available treatment to halt the progression of clinical symptoms; however, due to the limitations of this procedure, development of alternative therapeutic strategies is of utmost importance. In this regard, interference RNA (RNAi) targeting TTR is currently in phase III clinical development. To dissect molecular changes occurring in dorsal root ganglia (DRG) upon RNAi-mediated knockdown of TTR, we treated both chronically and acutely an FAP mouse model, in different stages of disease. Our data show that inhibition of TTR expression by the liver with RNAi reverse TTR deposition in DRG, decrease matrix metalloproteinase-2 (MMP-2) protein levels in plasma, inhibit Mmp-2 gene expression and downregulate MMP-9 activity in DRG, indicating extracellular matrix remodeling. Furthermore, protein levels of MMP-2 were found upregulated in plasma samples from FAP patients indicating that MMP-2 might be a novel potential biomarker for FAP diagnosis. Collectively, our data show that silencing TTR liver synthesis in vivo can modulate TTR-induced pathology in the peripheral nervous system and highlight the potential of MMP-2 as a novel disease biomarker.
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Affiliation(s)
- Nádia Pereira Gonçalves
- Instituto de Inovação e Investigação em Saúde (I3S), Universidade do Porto, Porto, Portugal; Molecular Neurobiology, Instituto de Biologia Molecular e Celular - IBMC, Porto, Portugal
| | - Paula Gonçalves
- Instituto de Inovação e Investigação em Saúde (I3S), Universidade do Porto, Porto, Portugal; Molecular Neurobiology, Instituto de Biologia Molecular e Celular - IBMC, Porto, Portugal
| | - Joana Magalhães
- Instituto de Inovação e Investigação em Saúde (I3S), Universidade do Porto, Porto, Portugal; Molecular Neurobiology, Instituto de Biologia Molecular e Celular - IBMC, Porto, Portugal
| | - Miguel Ventosa
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Ana Varela Coelho
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Maria João Saraiva
- Instituto de Inovação e Investigação em Saúde (I3S), Universidade do Porto, Porto, Portugal; Molecular Neurobiology, Instituto de Biologia Molecular e Celular - IBMC, Porto, Portugal.
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Hu C, Sun L, Xiao L, Han Y, Fu X, Xiong X, Xu X, Liu Y, Yang S, Liu F, Kanwar YS. Insights into the Mechanisms Involved in the Expression and Regulation of Extracellular Matrix Proteins in Diabetic Nephropathy. Curr Med Chem 2016; 22:2858-70. [PMID: 26119175 DOI: 10.2174/0929867322666150625095407] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 06/15/2015] [Accepted: 06/24/2015] [Indexed: 02/06/2023]
Abstract
Diabetic Nephropathy (DN) is believed to be a major microvascular complication of diabetes. The hallmark of DN includes deposition of Extracellular Matrix (ECM) proteins, such as, collagen, laminin and fibronectin in the mesangium and renal tubulo-interstitium of the glomerulus and basement membranes. Such an increased expression of ECM leads to glomerular and tubular basement membranes thickening and increase of mesangial matrix, ultimately resulting in glomerulosclerosis and tubulointerstitial fibrosis. The characteristic morphologic glomerular mesangial lesion has been described as Kimmelstiel-Wilson nodule, and the process at times is referred to as diabetic nodular glomerulosclerosis. Thus, the accumulation of ECM proteins plays a critical role in the development of DN. The relevant mechanism(s) involved in the increased ECM expression and their regulation in the kidney in diabetic state has been extensively investigated and documented in the literature. Nevertheless, there are certain other mechanisms that may yet be conclusively defined. Recent studies demonstrated that some of the new signaling pathways or molecules including, Notch, Wnt, mTOR, TLRs and small GTPase may play a pivotal role in the modulation of ECM regulation and expression in DN. Such modulation could be operational for instance Notch through Notch1/Jagged1 signaling, Wnt by Wnt/β- catenin pathway and mTOR via PI3-K/Akt/mTOR signaling pathways. All these pathways may be critical in the modulation of ECM expression and tubulo-interstitial fibrosis. In addition, TLRs, mainly the TLR2 and TLR4, by TLR2- dependent and TGF-β-dependent conduits, may modulate ECM expression and generate a fibrogenic response. Small GTPase like Rho, Ras and Rab family by targeting relevant genes may also influence the accumulation of ECM proteins and renal fibrosis in hyperglycemic states. This review summarizes the recent information about the role and mechanisms by which these molecules and signaling pathways regulate ECM synthesis and its expression in high glucose ambience in vitro and in vivo states. The understanding of such signaling pathways and the molecules that influence expression, secretion and amassing of ECM may aid in developing strategies for the amelioration of diabetic nephropathy.
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Affiliation(s)
| | - L Sun
- Department of Nephrology, Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
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Lin D, Chun TH, Kang L. Adipose extracellular matrix remodelling in obesity and insulin resistance. Biochem Pharmacol 2016; 119:8-16. [PMID: 27179976 DOI: 10.1016/j.bcp.2016.05.005] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 05/10/2016] [Indexed: 12/15/2022]
Abstract
The extracellular matrix (ECM) of adipose tissues undergoes constant remodelling to allow adipocytes and their precursor cells to change cell shape and function in adaptation to nutritional cues. Abnormal accumulation of ECM components and their modifiers in adipose tissues has been recently demonstrated to cause obesity-associated insulin resistance, a hallmark of type 2 diabetes. Integrins and other ECM receptors (e.g. CD44) that are expressed in adipose tissues have been shown to regulate insulin sensitivity. It is well understood that a hypoxic response is observed in adipose tissue expansion during obesity progression and that hypoxic response accelerates fibrosis and inflammation in white adipose tissues. The expansion of adipose tissues should require angiogenesis; however, the excess deposition of ECM limits the angiogenic response of white adipose tissues in obesity. While recent studies have focused on the metabolic consequences and the mechanisms of adipose tissue expansion and remodelling, little attention has been paid to the role played by the interaction between peri-adipocyte ECM and their cognate cell surface receptors. This review will address what is currently known about the roles played by adipose ECM, their modifiers, and ECM receptors in obesity and insulin resistance. Understanding how excess ECM deposition in the adipose tissue deteriorates insulin sensitivity would provide us hints to develop a new therapeutic strategy for the treatment of insulin resistance and type 2 diabetes.
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Affiliation(s)
- De Lin
- Division of Cancer Research, School of Medicine, University of Dundee, Dundee, UK
| | - Tae-Hwa Chun
- Division of Metabolism, Endocrinology & Diabetes (MEND), Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA; Biointerfaces Institute, University of Michigan, Ann Arbor, MI, USA
| | - Li Kang
- Division of Molecular and Clinical Medicine, School of Medicine, University of Dundee, Dundee, UK.
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Myrciaria cauliflora extracts attenuate diabetic nephropathy involving the Ras signaling pathway in streptozotocin/nicotinamide mice on a high fat diet. J Food Drug Anal 2016; 24:136-146. [PMID: 28911396 PMCID: PMC9345440 DOI: 10.1016/j.jfda.2015.10.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 09/04/2015] [Accepted: 11/11/2015] [Indexed: 11/20/2022] Open
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Tal H, Weinreb M, Shely A, Nemcovsky CE, Moses O. Tetracycline impregnation affects degradation of porcine collagen matrix in healthy and diabetic rats. Clin Oral Investig 2015; 20:1237-42. [PMID: 26445855 DOI: 10.1007/s00784-015-1615-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 09/21/2015] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The present study evaluated the degradation of collagen matrix (CM) immersed in tetracycline (TTC) or phosphate-buffered saline (PBS) in diabetic and normoglycemic rats. MATERIALS AND METHODS Diabetes was induced in 15 rats by systemic streptozotocin (STZ) (experimental); 15 healthy rats served as controls. One day before implantation 60 CM disks, 5 mm in diameter, were labeled with biotin: 30 were immersed in tetracycline (TTC) and 30 in PBS. One disk of each type was implanted subdermally in each rat. Animals were euthanized after 3 weeks, and tissue specimens containing the disks were prepared for histologic analysis. Horseradish peroxidase (HRP)-conjugated streptavidin was used to detect the remaining biotinylated collagen. Residual collagen area within the CM disks was analyzed and compared to baseline. RESULTS Diabetes significantly increased the CM degradation. Immersion of the CM disks in a 50-mg/mL TTC solution before implantation decreased its degradation both in diabetic and normoglycemic rats. CONCLUSIONS Diabetes significantly increases collagen matrix degradation; immersion of collagen matrix in TTC before implantation decreases its degradation in both diabetic and normoglycemic conditions. CLINICAL RELEVANCE Immersion of medical collagen devices in TTC may be an effective means to decrease their resorption rate and increase their effectiveness, especially in situations with increased degradation such as diabetes.
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Affiliation(s)
- Haim Tal
- Department of Periodontology and Dental Implantology, Tel Aviv University School of Dental Medicine, Ramat Aviv, Tel Aviv, 69978, Israel.
| | - Miron Weinreb
- Department of Oral Biology, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Asaf Shely
- Department of Periodontology and Dental Implantology, Tel Aviv University School of Dental Medicine, Ramat Aviv, Tel Aviv, 69978, Israel
| | - Carlos E Nemcovsky
- Department of Periodontology and Dental Implantology, Tel Aviv University School of Dental Medicine, Ramat Aviv, Tel Aviv, 69978, Israel
| | - Ofer Moses
- Department of Periodontology and Dental Implantology, Tel Aviv University School of Dental Medicine, Ramat Aviv, Tel Aviv, 69978, Israel
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Williams AS, Kang L, Wasserman DH. The extracellular matrix and insulin resistance. Trends Endocrinol Metab 2015; 26:357-66. [PMID: 26059707 PMCID: PMC4490038 DOI: 10.1016/j.tem.2015.05.006] [Citation(s) in RCA: 151] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Revised: 05/13/2015] [Accepted: 05/14/2015] [Indexed: 12/14/2022]
Abstract
The extracellular matrix (ECM) is a highly-dynamic compartment that undergoes remodeling as a result of injury and repair. Over the past decade, mounting evidence in humans and rodents suggests that ECM remodeling is associated with diet-induced insulin resistance in several metabolic tissues. In addition, integrin receptors for the ECM have also been implicated in the regulation of insulin action. This review addresses what is currently known about the ECM, integrins, and insulin action in the muscle, liver, and adipose tissue. Understanding how ECM remodeling and integrin signaling regulate insulin action may aid in the development of new therapeutic targets for the treatment of insulin resistance and type 2 diabetes (T2D).
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Affiliation(s)
- Ashley S Williams
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, USA
| | - Li Kang
- Division of Cardiovascular and Diabetes Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - David H Wasserman
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, USA; Mouse Metabolic Phenotyping Center, Vanderbilt University, Nashville, TN, USA.
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Song G, Wu Y, Wang F, Shao Y, Jiang J, Fan C, Li P, Zhang Y, Zuo H. Development and preparation of a low-immunogenicity porcine dermal scaffold and its biocompatibility assessment. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:170. [PMID: 25804306 DOI: 10.1007/s10856-015-5503-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Accepted: 02/09/2015] [Indexed: 06/04/2023]
Abstract
Acellular dermal matrix (ADM) has been widely used in repair and reconstruction of tissue defect. Therapeutic effect of porcine ADM (PADM) is inferior to that of human ADM (HADM). Relatively high immunogenicity and the resulting strong inflammatory response are major issue in application of PADM. We therefore treated reticular layer PADM (Rl-PADM) with matrix metalloproteinase-7 (MMP-7) and obtained a low-immunogenicity porcine dermal scaffold (LIPDS). Highly immunogenic components, tissue structure, cytocompatibility, and postgrafting histological changes of LIPDS were further investigated. Compared with Rl-PADM, LIPDS showed that the epithelial root sheath, cell debris, laminin, and type IV collagen were almost entirely removed, the structure remained normal, and the interfibrous space was relatively enlarged. Cytocompatibility of LIPDS was similar to that of HADM but superior to Rl-PADM. With regard to the extent of tissue ingrowth in terms of host fibroblasts infiltration and vascularization, LIPDS exhibited clear advantages over Rl-PADM after they had been subcutaneously transplanted in a rat model. In addition, no excessive inflammatory response was observed in LIPDS group up to 28 days postgraft, and the morphosis of collagenous fibers kept essentially normal. However, there were stronger inflammatory response and obvious collagen spallation in Rl-PADM group. The processes of integration and remodeling after the LIPDS grafting were similar to those of a normal wound healing response. The LIPDS graft was vascularized at a relatively high speed. Thus, as an implantable scaffold material, LIPDS is a superior template for guiding tissue regeneration and remodeling.
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Affiliation(s)
- Guodong Song
- Department of Burns, Jinan Central Hospital Affiliated to Shandong University, 105 Jiefang Road, Jinan, 250013, Shandong, People's Republic of China,
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Xu X, Xiao L, Xiao P, Yang S, Chen G, Liu F, Kanwar YS, Sun L. A glimpse of matrix metalloproteinases in diabetic nephropathy. Curr Med Chem 2015; 21:3244-60. [PMID: 25039784 DOI: 10.2174/0929867321666140716092052] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 07/06/2014] [Accepted: 07/11/2014] [Indexed: 12/14/2022]
Abstract
Matrix metalloproteinases (MMPs) are proteolytic enzymes belonging to the family of zinc-dependent endopeptidases that are capable of degrading almost all the proteinaceous components of the extracellular matrix (ECM). It is known that MMPs play a role in a number of renal diseases, such as, various forms of glomerulonephritis and tubular diseases, including some of the inherited kidney diseases. In this regard, ECM accumulation is considered to be a hallmark morphologic finding of diabetic nephropathy, which not only is related to the excessive synthesis of matrix proteins, but also to their decreased degradation by the MMPs. In recent years, increasing evidence suggest that there is a good correlation between the activity or expression of MMPs and progression of renal disease in patients with diabetic nephropathy and in various experimental animal models. In such a diabetic milieu, the expression of MMPs is modulated by high glucose, advanced glycation end products (AGEs), TGF-β, reactive oxygen species (ROS), transcription factors and some of the microRNAs. In this review, we focused on the structure and functions of MMPs, and their role in the pathogenesis of diabetic nephropathy.
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Affiliation(s)
| | | | | | | | | | | | | | - L Sun
- Department of Nephrology, Second Xiangya Hospital, Central South University, Changsha, Hunan 415800, China..
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Luo P, Peng H, Li C, Ye Z, Tang H, Tang Y, Chen C, Lou T. Advanced glycation end products induce glomerular endothelial cell hyperpermeability by upregulating matrix metalloproteinase activity. Mol Med Rep 2015; 11:4447-53. [PMID: 25634678 DOI: 10.3892/mmr.2015.3269] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Accepted: 11/19/2014] [Indexed: 11/05/2022] Open
Abstract
The present study aimed to investigate the effects of advanced glycation end‑products (AGEs) on the permeability of glomerular endothelial cells (GEnCs) and determine whether enhanced permeability was due to degradation of tight junction (TJ) complexes by matrix metalloproteinases (MMPs). Cultured monolayers of GEnCs were exposed to AGEs at different doses and treatment durations in the presence or absence of the organic MMP‑2/9 inhibitor (2R)‑2‑((4‑biphenyl sulfony‑l)amino)‑3‑phenylproprionic acid) (BiPs). Expression of the TJ proteins occludin and claudin‑5 was determined by western blot analysis and immunofluorescence, while the permeability of the GEnCs was measured using transendothelial electrical resistance and by diffusion of 4 kDa fluorescein isothiocyanate (FITC)‑dextran. The activities of MMP‑2 and MMP‑9 were assayed using gelatin zymography. The results indicated that AGE‑treated cultures significantly reduced occludin and claudin‑5 immunoreactivity. Similarly, the surface expression of these proteins was significantly reduced and rows of TJs which normally connect endothelial cells became discontinuous or fractured following AGE exposure. Disruption of TJs was accompanied by significantly reduced transendothelial resistance and hyperpermeability to FITC‑dextran. Treatment with AGEs evoked a dose‑ and time‑dependent upregulation of MMP‑2 and MMP‑9. However, co‑administration of AGEs and BiPS, an inhibitor of MMP‑2/MMP‑9, inhibited the downregulation of occludin and claudin‑5, with a concomitant reversal of GEnC monolayer hyperpermeability. In conclusion, AGEs promoted glomerular hyperpermeability in vitro by the MMP‑mediated disruption of TJs. Chronic elevation of endothelial cell AGEs in diabetes mellitus may contribute to glomerular hyperpermeability by inducing the overexpression of MMPs, which degrade TJs, leading to proteinuria.
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Affiliation(s)
- Pengli Luo
- Department of Nephrology, Affiliated Hospital of Qinghai University, Xining, Qinghai 810001, P.R. China
| | - Hui Peng
- Department of Nephrology, The Third Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510660, P.R. China
| | - Canming Li
- Department of Nephrology, The Third Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510660, P.R. China
| | - Zengchun Ye
- Department of Nephrology, The Third Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510660, P.R. China
| | - Hua Tang
- Department of Nephrology, The Third Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510660, P.R. China
| | - Ying Tang
- Department of Nephrology, The Second Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510000, P.R. China
| | - Cailian Chen
- Department of Nephrology, The Third Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510660, P.R. China
| | - Tanqi Lou
- Department of Nephrology, The Third Affiliated Hospital of Sun Yat‑Sen University, Guangzhou, Guangdong 510660, P.R. China
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Patel SB, Santani D, Patel V, Shah M. Anti-diabetic effects of ethanol extract of Bryonia laciniosa seeds and its saponins rich fraction in neonatally streptozotocin-induced diabetic rats. Pharmacognosy Res 2015; 7:92-9. [PMID: 25598641 PMCID: PMC4285656 DOI: 10.4103/0974-8490.147217] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 08/18/2014] [Accepted: 12/17/2014] [Indexed: 02/02/2023] Open
Abstract
Context: Bryonia laciniosa Linn. (Cucurbitaceae) seed is used in traditional medicine for a number of ailments including metabolic disorders. Aim: This study evaluated the anti-diabetic action of the ethanol extract of B. laciniosa seeds and saponin fraction of it through its effect on hyperglycemia, dyslipidaemia and oxidative stress in neonatally streptozotocin (n-STZ)-induced diabetic rats (n-STZ diabetic rats). Materials and Methods: Ethanol extract (250 and 500 mg/kg; p.o.), saponin fraction (100 and 200 mg/kg; p.o.) and standard drug glibenclamide (3 mg/kg; p.o.) were administered to diabetic rats when the rats were 6 weeks old and continued for 10 consecutive weeks. Effects of ethanol extract and saponin fraction on various biochemical parameters were studied in diabetic rats. Results: The treatment with ethanol extract and saponin fraction for 10 weeks decrease in the levels of glucose, triglycerides, cholesterol, high-density lipoprotein, low-density lipoprotein, very low-density lipoprotein, serum urea, serum creatinine and diminished activities of aspartate transaminase, and alanine transaminase. The anti-hyperglycemic nature of B. laciniosa is probably brought about by the extra- the pancreatic mechanism as evidenced from unchanged levels of plasma insulin. B. laciniosa modulated effect of diabetes on the liver malondialdehyde, reduced glutathione (GSH), superoxide dismutase (SOD), and catalase (CAT) activity. Administration of ethanol extract and saponin fraction to diabetic rats showed a significant reversal of disturbed antioxidant status. Significant increase in SOD, CAT, and levels of GSH was observed in treated n-STZ diabetic rats. Conclusion: The present study reveals the efficacy of B. laciniosa seed extract and its saponin fraction in the amelioration of n-STZ diabetic rats.
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Affiliation(s)
- Sandip B Patel
- Department of Pharmacology, Indukaka Ipcowala College of Pharmacy, New Vallbh Vidyanagar, Anand, India
| | - Devdas Santani
- Department of Clinical Pharmacy, Rofel Shri G.M. Bilakhia College of Pharmacy, Vapi, India
| | - Veena Patel
- Department of Pharmacognosy, Anand College of Pharmacy, Anand, India
| | - Mamta Shah
- Department of Pharmacognosy, L. M. College of Pharmacy, Navrangpura, Ahmedabad, Gujarat, India
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Musante L, Tataruch D, Gu D, Liu X, Forsblom C, Groop PH, Holthofer H. Proteases and protease inhibitors of urinary extracellular vesicles in diabetic nephropathy. J Diabetes Res 2015; 2015:289734. [PMID: 25874235 PMCID: PMC4383158 DOI: 10.1155/2015/289734] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 02/23/2015] [Indexed: 12/14/2022] Open
Abstract
Diabetic nephropathy (DN) is one of the major complications of diabetes mellitus (DM), leads to chronic kidney disease (CKD), and, ultimately, is the main cause for end-stage kidney disease (ESKD). Beyond urinary albumin, no reliable biomarkers are available for accurate early diagnostics. Urinary extracellular vesicles (UEVs) have recently emerged as an interesting source of diagnostic and prognostic disease biomarkers. Here we used a protease and respective protease inhibitor array to profile urines of type 1 diabetes patients at different stages of kidney involvement. Urine samples were divided into groups based on the level of albuminuria and UEVs isolated by hydrostatic dialysis and screened for relative changes of 34 different proteases and 32 protease inhibitors, respectively. Interestingly, myeloblastin and its natural inhibitor elafin showed an increase in the normo- and microalbuminuric groups. Similarly, a characteristic pattern was observed in the array of protease inhibitors, with a marked increase of cystatin B, natural inhibitor of cathepsins L, H, and B as well as of neutrophil gelatinase-associated Lipocalin (NGAL) in the normoalbuminuric group. This study shows for the first time the distinctive alterations in comprehensive protease profiles of UEVs in diabetic nephropathy and uncovers intriguing mechanistic, prognostic, and diagnostic features of kidney damage in diabetes.
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Affiliation(s)
- Luca Musante
- Centre for Bioanalytical Sciences (CBAS), Dublin City University, Dublin 9, Ireland
- *Luca Musante: and
| | - Dorota Tataruch
- Centre for Bioanalytical Sciences (CBAS), Dublin City University, Dublin 9, Ireland
| | - Dongfeng Gu
- Centre for Bioanalytical Sciences (CBAS), Dublin City University, Dublin 9, Ireland
| | - Xinyu Liu
- Centre for Bioanalytical Sciences (CBAS), Dublin City University, Dublin 9, Ireland
| | - Carol Forsblom
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, 00100 Helsinki, Finland
- Department of Medicine, Division of Nephrology, Helsinki University Central Hospital, 00100 Helsinki, Finland
- Diabetes and Obesity, Research Program Unit, University of Helsinki, 00100 Helsinki, Finland
| | - Per-Henrik Groop
- Folkhälsan Institute of Genetics, Folkhälsan Research Center, 00100 Helsinki, Finland
- Department of Medicine, Division of Nephrology, Helsinki University Central Hospital, 00100 Helsinki, Finland
- Diabetes and Obesity, Research Program Unit, University of Helsinki, 00100 Helsinki, Finland
- Baker IDI Heart and Diabetes Institute, Melbourne, VIC 3004, Australia
| | - Harry Holthofer
- Centre for Bioanalytical Sciences (CBAS), Dublin City University, Dublin 9, Ireland
- *Harry Holthofer:
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Matrix metalloproteinases as biomarkers of disease: updates and new insights. ACTA ACUST UNITED AC 2015; 53:349-55. [DOI: 10.1515/cclm-2014-0520] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 07/18/2014] [Indexed: 11/15/2022]
Abstract
AbstractMatrix metalloproteinases (MMPs) play a pivotal role in remodeling the extracellular matrix (ECM) and are therefore of interest for new diagnostic tools for the clinical management of diseases involving ECM disruption. This setting ranges from the classical areas of MMP studies, such as vascular disease, cancer progression or bone disorders, to new emerging fields of application, such as neurodegenerative disease or sepsis. Increasing the knowledge about the role of MMPs in the pathogenesis of diseases where a clear diagnostic panel is still lacking could provide new insight and improve the identification and the clinical treatment of these human diseases. This review focuses on the latest descriptions of the clinical use of MMP as biomarkers in the diagnosis, prognosis and monitoring of different diseases, such as diabetes, cardiovascular diseases, cancer and metastasis, neurodegenerative disorders and sepsis.
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79
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Zeng LQ, Wei SB, Sun YM, Qin WY, Cheng J, Mitchelson K, Xie L. Systematic profiling of mRNA and miRNA expression in the pancreatic islets of spontaneously diabetic Goto-Kakizaki rats. Mol Med Rep 2014; 11:67-74. [PMID: 25333294 PMCID: PMC4237099 DOI: 10.3892/mmr.2014.2723] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 07/01/2014] [Indexed: 12/20/2022] Open
Abstract
Type 2 diabetes (T2DM) is a complex multifactorial metabolic disorder that affects >100 million individuals worldwide, yet the mechanisms involved in the development and progression of the disease have not yet been fully elucidated. The present study examined the mRNA and micro (mi)RNA expression profiles by microarray analysis in the pancreas islets of spontaneously diabetic Goto-Kakizaki rats with the aim to identify regulatory mechanisms underlying the pathogenesis of T2DM. A total of 9 upregulated and 10 downregulated miRNAs were identified, including miR-150, miR-497, miR-344-3p and let-7f, which were independently validated by quantitative polymerase chain reaction assays. In addition, differential expression of 670 genes was detected by mRNA microarray analysis, including 370 upregulated and 247 downregulated genes. The differentially expressed genes were statistically associated with major cellular pathways, including the immune response pathway and the extracellular matrix (ECM)-receptor interaction pathway. Finally, a reverse regulatory association of differentially expressed miRNAs and their predicted target genes was constructed, supported by analysis of their mRNA and miRNA expression profiles. A number of key pairs of miRNA-mRNA was proposed to have significant roles in the pathogenesis of T2DM rats based on bioinformatics analysis, one example being the let-7f/collagen, type II, alpha 1 pair that may regulate ECM-receptor interactions.
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Affiliation(s)
- Ling-Qin Zeng
- Medical Systems Biology Research Center, Tsinghua University School of Medicine, Beijing 100084, P.R. China
| | - Su-Bi Wei
- Medical Systems Biology Research Center, Tsinghua University School of Medicine, Beijing 100084, P.R. China
| | - Yi-Min Sun
- National Engineering Research Center for Beijing Biochip Technology, Beijing 102206, P.R. China
| | - Wen-Yan Qin
- National Engineering Research Center for Beijing Biochip Technology, Beijing 102206, P.R. China
| | - Jing Cheng
- Medical Systems Biology Research Center, Tsinghua University School of Medicine, Beijing 100084, P.R. China
| | - Keith Mitchelson
- National Engineering Research Center for Beijing Biochip Technology, Beijing 102206, P.R. China
| | - Lan Xie
- Medical Systems Biology Research Center, Tsinghua University School of Medicine, Beijing 100084, P.R. China
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80
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Vallon V. Do tubular changes in the diabetic kidney affect the susceptibility to acute kidney injury? Nephron Clin Pract 2014; 127:133-8. [PMID: 25343837 DOI: 10.1159/000363554] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Diabetes is the single largest contributor to the growing prevalence of chronic kidney disease (CKD), and episodes of acute kidney injury (AKI) increase the risk of advanced CKD in diabetic patients. Here we discuss whether the pathophysiological changes that occur in the tubular system of the diabetic kidney affect the intrinsic susceptibility to AKI. There is abundant data showing that drug-induced nephrotoxicity is attenuated in rodents with experimental diabetes mellitus, and some mechanistic explanations have been provided, in particular in response to aminoglycosides. Besides downregulation in proximal tubular megalin, which mediates the aminoglycoside uptake in proximal tubules, a role for hyperglycemia-induced activation of regenerative mechanisms has been proposed. The available clinical data, however, indicates that diabetes is a risk factor for AKI, including aminoglycoside nephrotoxicity. While much needs to be learned about this disconnect, the isolated induction of diabetes in otherwise healthy young adult rodents may simply not fully mimic the influence that diabetes exerts in the setting of a critically ill and often elderly patient. We speculate that diabetic tubular growth and the associated molecular signature (including upregulation of TGF-β, senescence, and inflammation) set up the development of diabetic nephropathy and renal failure in part by increasing the susceptibility to AKI, which further promotes hypoxia and apoptosis. Considering the strong association between AKI episodes and the cumulative risk of developing advanced CKD in diabetes, strategies that reduce AKI in these patients are expected to help reduce the growing burden of end-stage renal disease.
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Affiliation(s)
- Volker Vallon
- Division of Nephrology-Hypertension, Departments of Medicine and Pharmacology, University of California San Diego, and VA San Diego Healthcare System, San Diego, Calif., USA
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81
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Kuhad A, Singh P, Chopra K. Matrix metalloproteinases: potential therapeutic target for diabetic neuropathic pain. Expert Opin Ther Targets 2014; 19:177-85. [PMID: 25243524 DOI: 10.1517/14728222.2014.960844] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION MMPs are zinc-dependent endopeptidases that play a key role in the remodeling of extracellular matrix (ECM). Various pathogenic mediators trigger abnormal MMP activity that leads to ECM abnormality. Hyperglycemia is one of the strong stimuli among oxidative stress and inflammation that upregulate MMP expression in the central and peripheral nervous system. MMP-mediated ECM abnormality hypersensitizes peripheral as well as central nerves that precipitate neuropathic pain in diabetic patients. AREAS COVERED Molecular mechanisms associated with MMP-mediated diabetic neuropathic pain have been discussed. Various endogenous, natural and synthetic MMP inhibitors are also explored. EXPERT OPINION In diabetes, hyperglycemia activates MMPs that along with the other pathogenic mediators cause neuronal injury and precipitates neuropathic pain. Thus, MMPs play a crucial role in the development of neuropathic pain among diabetics. However, MMPs are not only responsible for deleterious ECM abnormalities but are also required for beneficial remodeling of ECM under normal physiological conditions. Therefore, highly selective and specific inhibitors must be designed and explored for their clinical potential for treatment/prevention of diabetic neuropathic pain.
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Affiliation(s)
- Anurag Kuhad
- Panjab University, University Institute of Pharmaceutical Sciences, Pharmacology Research Laboratory, UGC Centre of Advanced Study , Chandigarh - 160 014 , India +91 9915173064 ; +91 172 2534101 ;
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82
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Ali S, Driscoll HE, Newton VL, Gardiner NJ. Matrix metalloproteinase-2 is downregulated in sciatic nerve by streptozotocin induced diabetes and/or treatment with minocycline: Implications for nerve regeneration. Exp Neurol 2014; 261:654-65. [PMID: 25158309 PMCID: PMC4199570 DOI: 10.1016/j.expneurol.2014.08.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 08/07/2014] [Accepted: 08/11/2014] [Indexed: 12/13/2022]
Abstract
Minocycline is an inhibitor of matrix metalloproteinases (MMPs) and has been shown to have analgesic effects. Whilst increased expression of MMPs is associated with neuropathic pain, MMPs also play crucial roles in Wallerian degeneration and nerve regeneration. In this study we examined the expression of MMP-2, MMP-9 and tissue inhibitor of metalloproteinase (TIMP)-1/-2 in the sciatic nerve of control and streptozotocin-induced diabetic rats treated with either vehicle or minocycline by quantitative PCR and gelatin zymography. We assessed the effects of minocycline on nerve conduction velocity and intraepidermal nerve fibre (IENF) deficits in diabetic neuropathy and investigated the effects of minocycline or MMP-2 on neurite outgrowth from primary cultures of dissociated adult rat sensory neurons. We show that MMP-2 is expressed constitutively in the sciatic nerve in vivo and treatment with minocycline or diabetes leads to downregulation of MMP-2 expression and activity. The functional consequence of this is IENF deficits in minocycline-treated nondiabetic rats and an unsupportive microenvironment for regeneration in diabetes. Minocycline reduces levels of MMP-2 mRNA and nerve growth factor-induced neurite outgrowth. Furthermore, in vivo minocycline treatment reduces preconditioning-induced in vitro neurite outgrowth following a sciatic nerve crush. In contrast, the addition of active MMP-2 facilitates neurite outgrowth in the absence of neurotrophic support and pre-treatment of diabetic sciatic nerve substrata with active MMP-2 promotes a permissive environment for neurite outgrowth. In conclusion we suggest that MMP-2 downregulation may contribute to the regenerative deficits in diabetes. Minocycline treatment also downregulates MMP-2 activity and is associated with inhibitory effects on sensory neurons. Thus, caution should be exhibited with its use as the balance between beneficial and detrimental outcomes may be critical in assessing the benefits of using minocycline to treat diabetic neuropathy. MMP-2, but not MMP-9, is constitutively expressed in the adult rat sciatic nerve. Levels of cleaved active MMP-2 are reduced in sciatic nerve of diabetic rats. Active MMP-2 potentiates neurite outgrowth from sensory neurons. Minocycline reduces levels of MMP-2 mRNA and impairs NGF-induced neurite growth. Minocycline did not prevent nerve dysfunction in experimental diabetic neuropathy.
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Affiliation(s)
- Sumia Ali
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Heather E Driscoll
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Victoria L Newton
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - Natalie J Gardiner
- Faculty of Life Sciences, University of Manchester, Oxford Road, Manchester M13 9PT, UK.
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83
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Uversky VN. Wrecked regulation of intrinsically disordered proteins in diseases: pathogenicity of deregulated regulators. Front Mol Biosci 2014; 1:6. [PMID: 25988147 PMCID: PMC4428494 DOI: 10.3389/fmolb.2014.00006] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 07/06/2014] [Indexed: 12/14/2022] Open
Abstract
Biologically active proteins without stable tertiary structure are common in all known proteomes. Functions of these intrinsically disordered proteins (IDPs) are typically related to regulation, signaling, and control. Cellular levels of these important regulators are tightly regulated by a variety mechanisms ranging from firmly controlled expression to precisely targeted degradation. Functions of IDPs are controlled by binding to specific partners, alternative splicing, and posttranslational modifications among other means. In the norm, right amounts of precisely activated IDPs have to be present in right time at right places. Wrecked regulation brings havoc to the ordered world of disordered proteins, leading to protein misfolding, misidentification, and missignaling that give rise to numerous human diseases, such as cancer, cardiovascular disease, neurodegenerative diseases, and diabetes. Among factors inducing pathogenic transformations of IDPs are various cellular mechanisms, such as chromosomal translocations, damaged splicing, altered expression, frustrated posttranslational modifications, aberrant proteolytic degradation, and defective trafficking. This review presents some of the aspects of deregulated regulation of IDPs leading to human diseases.
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Affiliation(s)
- Vladimir N Uversky
- Department of Molecular Medicine and USF Health Byrd Alzheimer's Research Institute, Morsani College of Medicine, University of South Florida Tampa, FL, USA ; Biology Department, Faculty of Science, King Abdulaziz University Jeddah, Saudi Arabia ; Laboratory of New Methods in Biology, Institute for Biological Instrumentation, Russian Academy of Sciences Moscow, Russia
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84
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Hepojoki J, Strandin T, Hetzel U, Sironen T, Klingström J, Sane J, Mäkelä S, Mustonen J, Meri S, Lundkvist Å, Vapalahti O, Lankinen H, Vaheri A. Acute hantavirus infection induces galectin-3-binding protein. J Gen Virol 2014; 95:2356-2364. [PMID: 25013204 DOI: 10.1099/vir.0.066837-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Hantaviruses are zoonotic viruses that cause life-threatening diseases when transmitted to humans. Severe hantavirus infection is manifested by impairment of renal function, pulmonary oedema and capillary leakage. Both innate and adaptive immune responses contribute to the pathogenesis, but the underlying mechanisms are not fully understood. Here, we showed that galectin-3-binding protein (Gal-3BP) was upregulated as a result of hantavirus infection both in vitro and in vivo. Gal-3BP is a secreted glycoprotein found in human serum, and increased Gal-3BP levels have been reported in chronic viral infections and in several types of cancer. Our in vitro experiments showed that, whilst Vero E6 cells (an African green monkey kidney cell line) constitutively expressed and secreted Gal-3BP, this protein was detected in primary human cells only as a result of hantavirus infection. Analysis of Gal-3BP levels in serum samples of cynomolgus macaques infected experimentally with hantavirus indicated that hantavirus infection induced Gal-3BP also in vivo. Finally, analysis of plasma samples collected from patients hospitalized because of acute hantavirus infection showed higher Gal-3BP levels during the acute than the convalescent phase. Furthermore, the Gal-3BP levels in patients with haemorrhagic fever with renal syndrome correlated with increased complement activation and with clinical variables reflecting the severity of acute hantavirus infection.
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Affiliation(s)
- Jussi Hepojoki
- Department of Virology, Peptide and Protein Laboratory, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Tomas Strandin
- Department of Virology, Peptide and Protein Laboratory, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Udo Hetzel
- Veterinary Pathology, Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Finland
| | - Tarja Sironen
- Department of Virology, Peptide and Protein Laboratory, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Jonas Klingström
- Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, Karolinska, University Hospital Huddinge, Stockholm, Sweden
| | - Jussi Sane
- Department of Virology, Peptide and Protein Laboratory, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Satu Mäkelä
- School of Medicine, University of Tampere, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, University of Tampere, Tampere, Finland
| | - Jukka Mustonen
- School of Medicine, University of Tampere, Tampere, Finland.,Department of Internal Medicine, Tampere University Hospital, University of Tampere, Tampere, Finland
| | - Seppo Meri
- Department of Bacteriology and Immunology, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Åke Lundkvist
- Swedish Institute for Communicable Disease Control, Solna, Sweden
| | - Olli Vapalahti
- Department of Virology and Immunology, HUSLAB, Hospital District of Helsinki and Uusimaa, Finland.,Veterinary Pathology, Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki, Finland.,Department of Virology, Peptide and Protein Laboratory, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Hilkka Lankinen
- Department of Virology, Peptide and Protein Laboratory, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Antti Vaheri
- Department of Virology and Immunology, HUSLAB, Hospital District of Helsinki and Uusimaa, Finland.,Department of Virology, Peptide and Protein Laboratory, Haartman Institute, University of Helsinki, Helsinki, Finland
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85
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Filip S, Pontillo C, Peter Schanstra J, Vlahou A, Mischak H, Klein J. Urinary proteomics and molecular determinants of chronic kidney disease: possible link to proteases. Expert Rev Proteomics 2014; 11:535-48. [DOI: 10.1586/14789450.2014.926224] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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86
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Ma Q, Zhang L, Yao L, Chen HP, Wang BE. Effects of herbal compound 861 on collagen synthesis and degradation in rat mesangial cells exposed to high glucose. Chin J Integr Med 2014; 20:209-15. [PMID: 24615213 DOI: 10.1007/s11655-014-1741-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To investigate the effects of Herbal Compound 861 (Cpd 861) on collagen synthesis and degradation in rat mesangial cells exposed to high glucose. METHODS The third to fifth passage of rat mesangial cells were exposed to high glucose and Cpd 861 at a concentration of 0.25-4.00 g/L for 24, 48 and 72 h, respectively. Benazepril (10(-7)-10(-3) mmol/L) was selected as positive control. The methyl thiazolyl tetrazolium colorimetric assay was used to evaluate the effect of Cpd 861 on cell proliferation. After incubation with Cpd 861 at a concentration of 2.00 g/L for 48 h, the protein secretions of collagen type IV, matrix metallopeptidase 9 (MMP-9), tissue inhibitor of metalloproteinase-1 (TIMP-1), transforming growth factor beta 1 (TGF-β1), and hepatocyte growth factor (HGF) were detected by enzyme-linked immunosorbent assay method. And rat mesangial cells were harvested to determine MMP-9, TIMP-1, TGF-β1 and HGF mRNA expression by reverse transcription polymerase chain reaction. RESULTS Cpd 861 inhibited cell proliferation induced by high glucose in a dose- and time-dependent manner. Compared with high glucose, collagen type IV production was decreased significantly by Cpd 861 (P<0.01). Cpd 861 increased the protein secretions and mRNA expressions of MMP-9 and HGF, whereas the protein secretions and mRNA expressions of TIMP-1 and TGF-β1 were reduced markedly (P<0.05). The ratio of MMP-9 to TIMP-1 was enhanced by Cpd 861 significantly. There was no significant difference in all above-mentioned effects between Cpd 861 (2.00 g/L) and benazepril (10(-5) mmol/L). CONCLUSION The anti-glomerulosclerosis mechanisms of Cpd 861 were partly attributed to its effects of inhibiting mesangial cell proliferation, decreasing collagen synthesis and enhancing collagen degradation.
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Affiliation(s)
- Qing Ma
- Department of Gerontology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
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87
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Kang L, Mayes WH, James FD, Bracy DP, Wasserman DH. Matrix metalloproteinase 9 opposes diet-induced muscle insulin resistance in mice. Diabetologia 2014; 57:603-13. [PMID: 24305966 PMCID: PMC4155606 DOI: 10.1007/s00125-013-3128-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 11/14/2013] [Indexed: 12/21/2022]
Abstract
AIMS/HYPOTHESIS Increased extracellular matrix (ECM) collagen is a characteristic of muscle insulin resistance. Matrix metalloproteinase (MMP) 9 is a primary enzyme that degrades collagen IV (ColIV). As a component of the basement membrane, ColIV plays a key role in ECM remodelling. We tested the hypotheses that genetic deletion of MMP9 in mice increases muscle ColIV, induces insulin resistance in lean mice and worsens diet-induced muscle insulin resistance. METHODS Wild-type (Mmp9(+/+)) and Mmp9-null (Mmp9(-/-)) mice were chow or high-fat (HF) fed for 16 weeks. Insulin action was measured by the hyperinsulinaemic-euglycaemic clamp in conscious weight-matched surgically catheterised mice. RESULTS Mmp9(-/-) and HF feeding independently increased muscle ColIV. ColIV in HF-fed Mmp9(-/-) mice was further increased. Mmp9(-/-) did not affect fasting insulin or glucose in chow- or HF-fed mice. The glucose infusion rate (GIR), endogenous glucose appearance (EndoRa) and glucose disappearance (Rd) rates, and a muscle glucose metabolic index (Rg), were the same in chow-fed Mmp9(+/+) and Mmp9(-/-) mice. In contrast, HF-fed Mmp9(-/-) mice had decreased GIR, insulin-stimulated increase in Rd and muscle Rg. Insulin-stimulated suppression of EndoRa, however, remained the same in HF-fed Mmp9(-/-) and Mmp9(+/+) mice. Decreased muscle Rg in HF-fed Mmp9(-/-) was associated with decreased muscle capillaries. CONCLUSIONS/INTERPRETATION Despite increased muscle ColIV, genetic deletion of MMP9 does not induce insulin resistance in lean mice. In contrast, this deletion results in a more profound state of insulin resistance, specifically in the skeletal muscle of HF-fed mice. These results highlight the importance of ECM remodelling in determining muscle insulin resistance in the presence of HF diet.
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Affiliation(s)
- Li Kang
- Department of Molecular Physiology and Biophysics, Vanderbilt University, 2215 Garland Ave, Nashville, TN, 37232, USA,
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88
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Renal biopsy: use of biomarkers as a tool for the diagnosis of focal segmental glomerulosclerosis. DISEASE MARKERS 2014; 2014:192836. [PMID: 24719498 PMCID: PMC3955602 DOI: 10.1155/2014/192836] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 01/15/2014] [Accepted: 01/15/2014] [Indexed: 12/12/2022]
Abstract
Focal segmental glomerulosclerosis (FSGS) is a glomerulopathy associated with nephrotic syndrome and podocyte injury. FSGS occurs both in children and adults and it is considered the main idiopathic nephrotic syndrome nowadays. It is extremely difficult to establish a morphological diagnosis, since some biopsies lack a considerable quantifiable number of sclerotic glomeruli, given their focal aspect and the fact that FSGS occurs in less than half of the glomeruli. Therefore, many biological molecules have been evaluated as potential markers that would enhance the diagnosis of FSGS. Some of these molecules and receptors are associated with the pathogenesis of FSGS and have potential use in diagnosis.
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89
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Hong T, Guh J, Wu B, Chai C, Huang H, Chen I. Kmup-1 Protects Kidney from Streptozotocin-Induced Pro-Inflammation in Early Diabetic Nephropathy by Restoring Enos/Pparγ and Inhibiting MMP-9. EUR J INFLAMM 2014. [DOI: 10.1177/1721727x1401200109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
KMUP-1 increases nitric oxide (NO) via endothelium nitric-oxide synthase (eNOS). Deficiency of eNOS and peroxisome proliferator-activated receptor-γ (PPARγ) is the pathogenesis of diabetic nephropathy (DN). This study aims to investigate whether KMUP-1 inhibits streptozotocin (STZ)-induced proinflammation in early DN. In experiments, STZ was used to induce diabetes in Wistar rats. Twenty-four male rats were randomly divided into four groups, including control, STZ (65 mg/kg, i.p.), STZ+KMUP-1(1 mg/kg) and STZ+KMUP-1 (2.5 mg/kg). KMUP-1 HCl was dissolved in distilled water for oral administration. The morphology of renal tissues was evaluated by periodic acid-schiff (PAS) staining and immunohistochemistry of eNOS. The expressions of matrix metalloproteinase-2/-9 (MMP-2/-9), eNOS, B-cell lymphoma 2 (Bcl-2), Bcl-2– associated X protein (Bax) and PPARγ of renal tissues were examined by Western blotting technique. NO production was evaluated by Griess reagent. Oxidative stress was evaluated by measuring reactive oxygen species (ROS). Results indicated that STZ-induced diabetic mellitus (DM) and subsequent DN, including excessive deposition of extracellular matrix (ECM) accompanied by enhanced MMP-2/-9, raised ROS production, increased Bcl-2/Bax ratio and decreased eNOS/PPARy over a period of 4 weeks. KMUP-1 inhibited STZ-induced hyperglycemia, BUN, MMP-2/MMP-9, and restored eNOS-PPARγ expression in renal tissues. Immunohistochemistry (IHC) of eNOS in glomeruli of renal cortical tissue sections indicated that KMUP-1 restored the eNOS caused by STZ. PAS staining of glomeruli indicated that KMUP-1 could not significantly reduce STZ-induced ECM expansion. Moreover, KMUP-1 increased Bcl-2/Bax and decreased ROS. In summary, KMUP-1 inhibits STZ-induced proinflammation in early DN by restoring PPARγ/eNOS and inhibiting MMP-9.
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Affiliation(s)
- T.Y. Hong
- Department of Pharmacology, School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - J.Y. Guh
- Department of Nephrology, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - B.N. Wu
- Department of Pharmacology, School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - C.Y. Chai
- Department of Pathology, School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - H.T. Huang
- Department of Anatomy, School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - I.J. Chen
- Department of Pharmacology, School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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90
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Naik SR, Shaikh N, Patil RR, Somani RS, Mali AS. Protective activity profile of herbomineral medicine in early diabetic nephropathy rats: Restoration of kidney antioxidants, hemodynamics and suppression of proinflammatory mediators. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.biomag.2013.10.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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91
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Kellenberger T, Krag S, Danielsen CC, Wang XF, Nyengaard JR, Pedersen L, Yang C, Gao S, Wogensen L. Differential effects of Smad3 targeting in a murine model of chronic kidney disease. Physiol Rep 2013; 1:e00181. [PMID: 24744860 PMCID: PMC3970747 DOI: 10.1002/phy2.181] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 11/01/2013] [Accepted: 11/03/2013] [Indexed: 01/06/2023] Open
Abstract
Transforming growth factor (TGF)‐β1 has a pivotal role in the pathogenesis of progressive kidney diseases that are characterized by fibrosis. The main intracellular signaling pathway of TGF‐β1 is the Smad system, where Smad2 and Smad3 play a central role in transcriptional regulation of target genes involved in extracellular matrix (ECM) metabolism. This study analyzes the hypothesis that blockade of Smad3 attenuates the development of TGF‐β1‐driven renal fibrosis. This was examined in vivo in a transgenic model of TGF‐β1‐induced chronic kidney disease with Smad3 or without Smad3 expression and in vitro in mesangial cells and glomerular endothelial cells with Smad2/3 inhibitors or Smad3‐knockdown. Electron microscopy was used for evaluation of morphological changes, real‐time polymerase chain reaction for detection of RNA expression, and immunohistochemistry for localization of ECM components. Matrix metalloproteinase (MMP) level was assessed by gelatin zymography electrophoresis and located by in situ zymography. The results show TGF‐β1‐induced mesangial matrix expansion, tubulointerstitial fibrosis, and tubular basement membrane thickening that are attenuated by Smad3 deletion, whereas TGF‐β1‐induced glomerular basement membrane thickening is not shown. The amount and distribution profile of MMP‐2 may suggest a role of the enzyme herein. We conclude that Smad3 targeting is not exclusively beneficial as Smad3 has diverse transcriptional regulatory effects in different cell types in the kidney. Deletion of Smad3 protects the kidney from developing transforming growth factor (TGF)‐β1‐induced tubulointerstitial fibrosis, mesangial matrix expansion, and tubular basement membrane thickening, but not glomerular basement membrane thickening. The favorable effects of Smad3 deficiency can be explained by reduced deposition of collagen subtypes. The cell‐specific changes of matrix metalloproteinase expression can be a result of altered TGF‐β1 signaling.
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Affiliation(s)
- Terese Kellenberger
- Research Laboratory for Biochemical Pathology, Aarhus University Hospital, Institute of Clinical Medicine, University of Aarhus, Aarhus, Denmark
| | - Søren Krag
- Research Laboratory for Biochemical Pathology, Aarhus University Hospital, Institute of Clinical Medicine, University of Aarhus, Aarhus, Denmark
| | - Carl Christian Danielsen
- Department of Connective Tissue Biology, Institute of Biomedicine, University of Aarhus, Aarhus, Denmark
| | - Xiao-Fan Wang
- Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC
| | - Jens Randel Nyengaard
- Stereology and Electron Microscopy Laboratory, Centre for Stochastic Geometry and Advanced Bioimaging, Institute of Clinical Medicine, University of Aarhus, Aarhus, Denmark
| | - Lea Pedersen
- Research Laboratory for Biochemical Pathology, Aarhus University Hospital, Institute of Clinical Medicine, University of Aarhus, Aarhus, Denmark
| | - Chuanxu Yang
- Department of Molecular Biology, University of Aarhus, Aarhus, Denmark
| | - Shan Gao
- Department of Molecular Biology, University of Aarhus, Aarhus, Denmark
| | - Lise Wogensen
- Research Laboratory for Biochemical Pathology, Aarhus University Hospital, Institute of Clinical Medicine, University of Aarhus, Aarhus, Denmark
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Toni M, Hermida J, Goñi MJ, Fernández P, Parks WC, Toledo E, Montes R, Díez N. Matrix metalloproteinase-10 plays an active role in microvascular complications in type 1 diabetic patients. Diabetologia 2013; 56:2743-52. [PMID: 24078057 DOI: 10.1007/s00125-013-3052-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Accepted: 08/28/2013] [Indexed: 01/29/2023]
Abstract
AIMS/HYPOTHESIS The role of metalloproteinase-10 (MMP-10) in type 1 diabetes is not known. We hypothesise that it plays a role in the onset and progression of diabetic nephropathy and retinopathy. METHODS Serum MMP-10 levels from 269 patients with type 1 diabetes were measured, and their association with microvascular complications was analysed. We also studied whether knocking out the Mmp10 gene influenced the extent of renal injury and retinal damage in a streptozotocin-induced diabetic mouse model. RESULTS The risk of nephropathy and proliferative retinopathy associated with the highest vs the lowest MMP-10 tertile was increased three to four times independently of the classical risk factors. Accordingly, renal function and morphology were better preserved in diabetic Mmp10 −⁄− mice than in their Mmp10 +/+ counterparts. There were more kidney-infiltrating macrophages in diabetic Mmp10+/+ mice, suggesting that MMP-10 contributes to the inflammatory response leading to microvascular complications. The loss of neuronal cells in the retinas of diabetic Mmp10 +/+ mice was higher than in Mmp10 −⁄− mice. Retinal inflammation was decreased in Mmp10 −⁄− mice, as indicated by their reduced retinal caspase-1 levels. CONCLUSIONS/INTERPRETATION MMP-10 is involved in the development of microvascular complications in type 1 diabetes and emerges as a potential therapeutic target for slowing down the evolution of diabetic nephropathy and retinopathy.
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Omran OM. Effects of Thymoquinone on STZ-induced Diabetic Nephropathy: An Immunohistochemical Study. Ultrastruct Pathol 2013; 38:26-33. [DOI: 10.3109/01913123.2013.830166] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Sanchez AM, Viganò P, Somigliana E, Panina-Bordignon P, Vercellini P, Candiani M. The distinguishing cellular and molecular features of the endometriotic ovarian cyst: from pathophysiology to the potential endometrioma-mediated damage to the ovary. Hum Reprod Update 2013; 20:217-30. [PMID: 24129684 DOI: 10.1093/humupd/dmt053] [Citation(s) in RCA: 204] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Clinical data suggest that the presence of an ovarian endometrioma may cause per se damage to the surrounding otherwise healthy ovarian tissue. However, the basic research has so far done a limited job in trying to understand the potential detrimental effect of an endometrioma presence in the context of the ovarian physiology. We have reviewed the literature with the aim of characterizing the pathophysiology of the endometrioma focusing mostly on factors and mechanisms potentially affecting the surrounding, otherwise normal, ovarian tissue. METHODS Comprehensive searches of PUBMED were conducted to identify human studies published from 1991 to 2013 in the English language on the cellular and molecular characterization of the various endometrioma components. RESULTS An endometrioma contains free iron, reactive oxygen species (ROS), proteolytic enzymes and inflammatory molecules in concentrations from tens to hundreds of times higher than those present in peripheral blood or in other types of benign cysts. The cyst fluid causes substantial changes in the endometriotic cells that it baths from gene expression modifications to genetic mutations The physical barrier between the cyst contents and the normal ovarian tissue is a thin wall composed of the ovarian cortex itself or fibroreactive tissue. ROS potentially permeating the surrounding tissues and proteolytic substances degrading the adjacent areas are likely to cause the substitution of normal ovarian cortical tissue with fibrous tissue in which the cortex-specific stroma is reduced. The fibrosis is associated with smooth muscle metaplasia and followed by follicular loss and intraovarian vascular injury. Follicular density in tissue surrounding the endometriotic cyst was consistently shown to be significantly lower than in healthy ovaries but this pathological change does not appear to be caused by the stretching of surrounding tissues owing to the presence of a cyst. CONCLUSIONS There is sufficient molecular, histological and morphological evidence, in part deriving from knowledge of the pathophysiology, to support a deleterious effect of the endometrioma on the adjacent ovarian cortical tissue, independent of the mere mechanical stretching owing to its size.
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Affiliation(s)
- A M Sanchez
- Reproductive Sciences Laboratory, Division of Genetics and Cell Biology, San Raffaele Scientific Institute, Milano, Italy
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Caligiuri SPB, Love K, Winter T, Gauthier J, Taylor CG, Blydt-Hansen T, Zahradka P, Aukema HM. Dietary linoleic acid and α-linolenic acid differentially affect renal oxylipins and phospholipid fatty acids in diet-induced obese rats. J Nutr 2013; 143:1421-31. [PMID: 23902961 DOI: 10.3945/jn.113.177360] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Analysis of oxylipins derived from fatty acids may provide insight into the biological effects of dietary lipids beyond their effects on tissue fatty acid profiles. We have previously observed that diets with higher amounts of α-linolenic acid (ALA; 18:3n3) are associated with reduced obesity-related glomerulopathy (ORG). Therefore, to examine the renal oxylipin profile, the effects of dietary linoleic acid (LA; 18:2n6) and ALA on oxylipins and renal phospholipid fatty acid composition, and the relationship between oxylipins and ORG, diet-induced obese rats displaying ORG were fed 8 different diets for 8 wk as follows (oil/oil = combination of two oils) [shown as ALA/LA (in g) per 100 g oil]: canola/flax (20/18), canola (8/18), soy (9/53), high-oleic canola/canola (5/16), high-oleic canola (2/15), lard/soy (1/8), and safflower (0.2/73). Targeted lipidomic analysis by HPLC-tandem mass spectrometry revealed that LA and ALA oxylipins comprised 60% of the total renal oxylipin profile examined. Of the >60 oxylipins screened, only those derived either directly or indirectly from ALA were associated with less glomerulomegaly, indicative of reduced ORG progression. Both the amount and ratio of dietary LA and ALA influenced renal polyunsaturated fatty acids (PUFAs); in contrast, only fatty acid amount altered oxylipins derived from these fatty acids, but there was no apparent competition by LA or ALA on their formation. Dietary LA incorporation into renal phospholipids was higher than for ALA, but ALA oxylipin:ALA ratios were higher than the analogous LA ratios for select lipoxygenase reactions. This indicates that the effect of dietary ALA on renal oxylipins exceeded what was reflected in renal PUFA composition. In conclusion, dietary LA and ALA have differential effects on renal oxylipins and PUFAs, and ALA-derived oxylipins are associated with renoprotection in this model of ORG.
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The adjuvant effect of hypertension upon diabetic peripheral neuropathy in experimental type 2 diabetes. Neurobiol Dis 2013; 62:18-30. [PMID: 23938761 DOI: 10.1016/j.nbd.2013.07.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 07/17/2013] [Accepted: 07/29/2013] [Indexed: 01/30/2023] Open
Abstract
Type 2 diabetes (DM) is the most common cause of peripheral neuropathy in the Western world. A comorbidity, hypertension, has been speculated to contribute to initiation or worsening of diabetic peripheral neuropathy. We studied adult rat models using genetic strains with DM (Zucker Diabetic Fat rats)±hypertension (HTN (ZSF-1 rats)) to investigate the relative contributions of DM and HTN and the potential for additive effects of HTN upon existing DM for the development of peripheral neuropathy. Long duration sensorimotor behavioral and electrophysiological testing was complemented by histological and molecular methods. Only DM led to tactile and thermal hyperalgesia and affected motor nerve electrophysiology. Although DM led to marked loss of sensory amplitudes and to sensory conduction slowing, a mild additive effect from HTN contributed after 6months of DM with worsening of slowing of sensory nerve conduction velocities, but without effect upon sensory amplitudes. At the sensory dominant sural nerve, mild (<10%) but greater degrees of myelin thinning were noted with DM and HTN combined, suggesting a mild additive effect. Matrix metalloproteinase (MMP) expression was increased only at the sural nerve in the presence of HTN with co-localization to Schwann cells and myelin. The effects of DM and HTN upon peripheral nerve are dissimilar, with HTN contributing to MMP upregulation at the sites of myelin thinning at sensory nerve fibers, potentially worsening comorbid DM. Together, our results indicate that HTN has a mild additive contribution to diabetic peripheral neuropathy at sensory peripheral nerve fibers manifesting with the loss of myelin thickness.
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Abstract
PURPOSE OF REVIEW Connective tissue growth factor, more recently officially known as CCN-2, is a member of the CCN family of secreted cysteine-rich modular matricellular proteins. Here, we review CCN-2 in diabetic nephropathy with focus on its regulation of extracellular matrix. RECENT FINDINGS CCN-2 is upregulated in the clinical and preclinical models of diabetic nephropathy by multiple stimuli, including elevated glucose, advanced glycation, some types of lipid, various hemodynamic factors, as well as hypoxia and oxidative stress. CCN-2 has bioactivities that suggest it may mediate diabetic nephropathy pathogenesis, especially in extracellular matrix accumulation, through both induction of new matrix and inhibition of matrix degradation. CCN-2 also has proinflammatory functions. Moreover, recent studies using antibodies or antisense technologies in animal and early phase clinical trial settings have shown that inhibition of renal CCN-2 expression or action may prevent diabetic nephropathy. Additionally, determination of renal and blood levels of CCN-2 as a marker of diabetic renal disease and its progression appears to have value. SUMMARY Recent publications implicate CCN-2 as both an evolving marker and mediator of diabetic nephropathy.
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Rastogi A, Kim H, Twomey JD, Hsieh AH. MMP-2 mediates local degradation and remodeling of collagen by annulus fibrosus cells of the intervertebral disc. Arthritis Res Ther 2013; 15:R57. [PMID: 23621950 PMCID: PMC4060574 DOI: 10.1186/ar4224] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 04/27/2013] [Indexed: 01/24/2023] Open
Abstract
INTRODUCTION Degeneration of the intervertebral disc (IVD) is characterized by marked degradation and restructuring of the annulus fibrosus (AF). Although several matrix metalloproteinases (MMPs) have been found to be more prevalent in degenerate discs, their coordination and function within the context of the disease process are still not well understood. In this study, we sought to determine whether MMP-2 is associated with degenerative changes in the AF and to identify the manner by which AF cells use MMP-2. METHODS Two established animal models of disc degeneration, static compression and transannular needle puncture of rodent caudal discs, were examined for MMP-2 immunopositivity. With lentiviral transduction of an shRNA expression cassette, we screened and identified an effective shRNA sequence for generating stable RNA interference to silence MMP-2 expression in primary rat AF cells. Gelatin films were used to compare gelatinase activity and spatial patterns of degradation between transduced cells, and both noninfected and nonsense shRNA controls. The functional significance of MMP-2 was determined by assessing the ability for cells to remodel collagen gels. RESULTS Both static compression and 18-g annular puncture of rodent caudal discs stimulated an increase in MMP-2 activity with concurrent lamellar disorganization in the AF, whereas 22-g and 26-g needle injuries did not. To investigate the functional role of MMP-2, we established lentivirus-mediated RNAi to induce stable knockdown of transcript levels by as much as 88%, and protein levels by as much as 95% over a 10-day period. Culturing transduced cells on gelatin films confirmed that MMP-2 is the primary functional gelatinase in AF cells, and that MMP-2 is used locally in regions immediately around AF cells. In collagen gels, transduced cells demonstrated an inability to remodel collagen matrices. CONCLUSIONS Our study indicates that increases in MMP-2 observed in human degenerate discs are mirrored in experimentally induced degenerative changes in rodent animal models. AF cells appear to use MMP-2 in a very directed fashion for local matrix degradation and collagen remodeling. This suggests that MMP-2 may have a functionally significant role in the etiology of degenerative disc disease and could be a potential therapeutic target.
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El Margoushy NM, Khaleel AT. Metalloproteinase and tissue inhibitor of metalloproteinase in tuberculosis and malignant pleural effusion. EGYPTIAN JOURNAL OF CHEST DISEASES AND TUBERCULOSIS 2013. [DOI: 10.1016/j.ejcdt.2013.03.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Yang XS, Liu SA, Liu JW, Yan Q. Fucosyltransferase IV enhances expression of MMP-12 stimulated by EGF via the ERK1/2, p38 and NF-κB pathways in A431 cells. Asian Pac J Cancer Prev 2013; 13:1657-62. [PMID: 22799384 DOI: 10.7314/apjcp.2012.13.4.1657] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Fucosyltransferase IV (FUT4) has been implicated in cell adhesion, motility, and tumor progression in human epidermoid carcinoma A431 cells. We previously reported that it promotes cell proliferation through the ERK/MAPK and PI3K/Akt signaling pathways; however, the molecular mechanisms underlying FUT4- induced cell invasion remain unknown. In this study we determined the effect of FUT4 on expression of matrix metalloproteinase (MMP)-12 induced by EGF in A431 cells. Treatment with EGF resulted in an alteration of cell morphology and induced an increase in the expression of MMP-12. EGF induced nuclear translocation of nuclear factor κB (NF-κB) and resulted in phosphorylation of IκBα in a time-dependent manner. In addition, ERK1/2 and p38 MAPK were shown to play a crucial role in mediating EGF-induced NF-κB translocation and phosphorylation of IκBα when treated with the MAPK inhibitors, PD98059 and SB203580, which resulted in increased MMP-12 expression. Importantly, we showed that FUT4 up-regulated EGF-induced MMP-12 expression by promoting the phosphorylation of ERK1/2 and p38 MAPK, thereby inducing phosphorylation/ degradation of IκBα, NF-κB activation. Base on our data, we propose that FUT4 up-regulates expression of MMP-12 via a MAPK-NF-κB-dependent mechanism.
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Affiliation(s)
- Xue-Song Yang
- Department of Biochemistry and Molecular Biology, Liaoning Provincial Core Lab of Glycobiology and Glycoengineering, China.
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