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Wang Y, Hu C, Cao L, Liu Q, Li Y, Zhu T, Zhang D. Advanced glycosylation end products promote the progression of CKD-MBD in rats, and its natural inhibitor, quercetin, mitigates disease progression. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:9675-9688. [PMID: 38907848 DOI: 10.1007/s00210-024-03217-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 06/03/2024] [Indexed: 06/24/2024]
Abstract
Chronic kidney disease-mineral and bone metabolism disorder (CKD-MBD) is a common chronic kidney disease (CKD)-associated complication that increases the risk of metabolic bone diseases, fractures, osteoblastic trans-differentiation of vascular smooth muscle cells, and cardiovascular events. SD rats were randomised into five groups with six rats per group: sham, CKD, CKD + advanced glycosylation end products (AGEs), CKD + Quercetin, and CKD + AGEs + Quercetin. The protective effects of AGEs and quercetin on SD rats were assessed by renal function, renal pathology, bone metabolism, osteoblastic trans-differentiation of vascular smooth muscle cells, and the receptor for AGE (RAGE) expression. Compared with the control group, rats in the CKD and CKD + AGEs groups had significantly lower body weight, higher serum AGEs levels, impaired renal function, increased levels of oxidative stress in the kidney and bone marrow tissues, lower femoral bone mineral density (BMD), callus mineralised volume fraction (mineralised bone volume/total volume), abnormal serum bone metabolism levels, and increased renal tissue, bone tissue, and abdominal aorta RAGE expression levels, and the RAGE downstream NF-κB signalling pathway was upregulated. Quercetin significantly improved renal dysfunction, attenuated serum AGE levels, reduced oxidative stress levels in the kidney and bone marrow tissues, and downregulated RAGE expression in the kidney, bone, and abdominal aorta and the RAGE downstream NF-κB signalling pathway in rats with CKD. AGEs are involved in the pathogenesis of CKD-MBD by promoting osteoblastic trans-differentiation of vascular smooth muscle cells and abnormal bone metabolism. Quercetin plays a role in the prevention and treatment of CKD-MBD by reducing the production of AGEs.
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MESH Headings
- Animals
- Quercetin/pharmacology
- Quercetin/therapeutic use
- Glycation End Products, Advanced/metabolism
- Rats, Sprague-Dawley
- Receptor for Advanced Glycation End Products/metabolism
- Chronic Kidney Disease-Mineral and Bone Disorder/drug therapy
- Chronic Kidney Disease-Mineral and Bone Disorder/etiology
- Chronic Kidney Disease-Mineral and Bone Disorder/metabolism
- Male
- Disease Progression
- Bone Density/drug effects
- Rats
- Oxidative Stress/drug effects
- Kidney/drug effects
- Kidney/metabolism
- Kidney/pathology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Renal Insufficiency, Chronic/drug therapy
- Renal Insufficiency, Chronic/metabolism
- Osteoblasts/drug effects
- Osteoblasts/metabolism
- Antioxidants/pharmacology
- Antioxidants/therapeutic use
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Affiliation(s)
- Yujie Wang
- Department of Nephropathy, The Affiliated Hospital Of Southwest Medical University, Luzhou, 646000, Sichuan, China.
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, China.
| | - Chenggang Hu
- The Affiliated TCM Hospital Of Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Ling Cao
- Department of Nephropathy, The Affiliated Hospital Of Southwest Medical University, Luzhou, 646000, Sichuan, China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, China
| | - Qi Liu
- Department of Nephropathy, The Affiliated Hospital Of Southwest Medical University, Luzhou, 646000, Sichuan, China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, China
| | - Ying Li
- Department of Nephropathy, The Affiliated Hospital Of Southwest Medical University, Luzhou, 646000, Sichuan, China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, China
| | - Tingting Zhu
- Department of Nephropathy, The Affiliated Hospital Of Southwest Medical University, Luzhou, 646000, Sichuan, China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, China
| | - Dongmei Zhang
- Department of Nephropathy, The Affiliated Hospital Of Southwest Medical University, Luzhou, 646000, Sichuan, China
- Sichuan Clinical Research Center for Nephropathy, Luzhou, 646000, Sichuan, China
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Li X, Zou J, Lin A, Chi J, Hao H, Chen H, Liu Z. Oxidative Stress, Endothelial Dysfunction, and N-Acetylcysteine in Type 2 Diabetes Mellitus. Antioxid Redox Signal 2024; 40:968-989. [PMID: 38497734 PMCID: PMC11535463 DOI: 10.1089/ars.2023.0524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/21/2024] [Accepted: 02/22/2024] [Indexed: 03/19/2024]
Abstract
Significance: Cardiovascular diseases (CVDs) remain the leading cause of morbidity and mortality globally. Endothelial dysfunction is closely associated with the development and progression of CVDs. Patients with diabetes mellitus (DM) especially type 2 DM (T2DM) exhibit a significant endothelial cell (EC) dysfunction with substantially increased risk for CVDs. Recent Advances: Excessive reactive oxygen species (ROS) and oxidative stress are important contributing factors to EC dysfunction and subsequent CVDs. ROS production is significantly increased in DM and is critically involved in the development of endothelial dysfunction in diabetic patients. In this review, efforts are made to discuss the role of excessive ROS and oxidative stress in the pathogenesis of endothelial dysfunction and the mechanisms for excessive ROS production and oxidative stress in T2DM. Critical Issues: Although studies with diabetic animal models have shown that targeting ROS with traditional antioxidant vitamins C and E or other antioxidant supplements provides promising beneficial effects on endothelial function, the cardiovascular outcomes of clinical studies with these antioxidant supplements have been inconsistent in diabetic patients. Future Directions: Preclinical and limited clinical data suggest that N-acetylcysteine (NAC) treatment may improve endothelial function in diabetic patients. However, well-designed clinical studies are needed to determine if NAC supplementation would effectively preserve endothelial function and improve the clinical outcomes of diabetic patients with reduced cardiovascular morbidity and mortality. With better understanding on the mechanisms of ROS generation and ROS-mediated endothelial damages/dysfunction, it is anticipated that new selective ROS-modulating agents and effective personalized strategies will be developed for the management of endothelial dysfunction in DM.
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Affiliation(s)
- Xin Li
- Department of Endocrinology, Ningbo No. 2 Hospital, Ningbo, China
| | - Junyong Zou
- Department of Respiratory Medicine, Ningbo No. 2 Hospital, Ningbo, China
| | - Aiping Lin
- Center for Precision Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
- Division of Cardiovascular Medicine, Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Jingshu Chi
- Center for Precision Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
- Division of Cardiovascular Medicine, Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Hong Hao
- Center for Precision Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
- Division of Cardiovascular Medicine, Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
| | - Hong Chen
- Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Zhenguo Liu
- Center for Precision Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
- Division of Cardiovascular Medicine, Department of Medicine, University of Missouri School of Medicine, Columbia, Missouri, USA
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3
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Kotańska M, Wojtaszek K, Kubacka M, Bednarski M, Nicosia N, Wojnicki M. The Influence of Caramel Carbon Quantum Dots and Caramel on Platelet Aggregation, Protein Glycation and Lipid Peroxidation. Antioxidants (Basel) 2023; 13:13. [PMID: 38275633 PMCID: PMC10812612 DOI: 10.3390/antiox13010013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 12/05/2023] [Accepted: 12/18/2023] [Indexed: 01/27/2024] Open
Abstract
Caramel, defined as a coloring agent and as an antioxidant, is used in several kinds of food products and is consumed by many people in different amounts. In our research we showed that the caramelization of sucrose under special conditions leads to the formation of carbon quantum dots (CQDs). So, it makes sense that humans also consume this type of CQDs, and it is theoretically possible for these particles to affect the body. Despite an increasing number of studies describing different types of CQDs, their biosafety is still not clearly understood. In our in vitro research, we examined the effects on platelet aggregation, protein glycation and lipid peroxidation of CQDs and caramel formed from a 20% sucrose solution. In vitro aggregation tests were conducted using freshly collected whole rat blood in a multiplate platelet function analyzer and measurer of electric impedance. The cytotoxic effect of the tested solutions on blood platelets was evaluated based on the release of lactate dehydrogenase. The formation of glycated bovine serum albumin was measured as fluorescence intensity and fructosamine level. The reducing power of the solutions was determined in adipose tissue, and their effect on lipid peroxidation in adipose tissue in vitro was also assessed. By measuring the intensity of hemolysis after incubation in solutions with red blood cell, we assessed their influence on the integration of the red blood cell membrane. All tests were performed in comparison with glucose and fructose and other frequently used sweeteners, such as erythritol and xylitol. Our study showed that caramel and CQDs formed from caramel may influence the glycation process and integrity of the red blood cell membrane, but unlike glucose and fructose, they decrease lipid peroxidation and may reduce Fe (III). Additionally, it is unlikely that they affect platelet aggregation. Compared to glucose and fructose, they may be safer for patients with metabolic disorders; however, further research is needed on the safety and biological activity of caramel and CQD.
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Affiliation(s)
- Magdalena Kotańska
- Department of Pharmacological Screening, Jagiellonian University Medical College, 9 Medyczna St., 30-688 Krakow, Poland;
| | - Konrad Wojtaszek
- Faculty of Non-Ferrous Metals, AGH University of Krakow, Mickiewicza Ave., 30-059 Krakow, Poland;
| | - Monika Kubacka
- Department of Pharmacodynamics, Jagiellonian University Medical College, 9 Medyczna St., 30-688 Krakow, Poland;
| | - Marek Bednarski
- Department of Pharmacological Screening, Jagiellonian University Medical College, 9 Medyczna St., 30-688 Krakow, Poland;
| | - Noemi Nicosia
- PhD Program in Neuroscience, Department of Medicine and Surgery, University of Milano-Bicocca, 20126 Milan, Italy
| | - Marek Wojnicki
- Faculty of Non-Ferrous Metals, AGH University of Krakow, Mickiewicza Ave., 30-059 Krakow, Poland;
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Zhang YR, Liu SM, Chen Y, Zhang LS, Ji DR, Zhao J, Yu YR, Jia MZ, Tang CS, Huang W, Zhou YB, Chai SB, Qi YF. Intermedin alleviates diabetic vascular calcification by inhibiting GLUT1 through activation of the cAMP/PKA signaling pathway. Atherosclerosis 2023; 385:117342. [PMID: 37879153 DOI: 10.1016/j.atherosclerosis.2023.117342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/21/2023] [Accepted: 10/10/2023] [Indexed: 10/27/2023]
Abstract
BACKGROUND AND AIMS Vascular calcification (VC) is regarded as an independent risk factor for cardiovascular events in type 2 diabetic patients. Glucose transporter 1 (GLUT1) involves VC. Intermedin/Adrenomedullin-2 (IMD/ADM2) is a cardiovascular protective peptide that can inhibit multiple disease-associated VC. However, the role and mechanism of IMD in diabetic VC remain unclear. Here, we investigated whether IMD inhibits diabetic VC by inhibiting GLUT1. METHODS AND RESULTS It was found that plasma IMD concentration was significantly decreased in type 2 diabetic patients and in fructose-induced diabetic rats compared with that in controls. Plasma IMD content was inversely correlated with fasting blood glucose level and VC severity. IMD alleviated VC in fructose-induced diabetic rats. Deficiency of Adm2 aggravated and Adm2 overexpression attenuated VC in high-fat diet-induced diabetic mice. In vitro, IMD mitigated high glucose-induced calcification of vascular smooth muscle cells (VSMCs). Mechanistically, IMD reduced advanced glycation end products (AGEs) content and the level of receptor for AGEs (RAGE). IMD decreased glucose transporter 1 (GLUT1) levels. The inhibitory effect of IMD on RAGE protein level was blocked by GLUT1 knockdown. GLUT1 knockdown abolished the effect of IMD on alleviating VSMC calcification. IMD receptor antagonist IMD17-47 and cyclic adenosine monophosphate/protein kinase A (cAMP/PKA) inhibitor H89 abolished the inhibitory effects of IMD on GLUT1 and VSMC calcification. CONCLUSIONS These findings revealed that IMD exerted its anti-calcification effect by inhibiting GLUT1, providing a novel therapeutic target for diabetic VC.
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Affiliation(s)
- Ya-Rong Zhang
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing, 100083, China; StateKey Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, 100083, China; Department of Pathogen Biology, School of Basic Medical Science, Peking University, Beijing, 100083, China
| | - Shi-Meng Liu
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing, 100083, China; StateKey Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, 100083, China; Department of Pathogen Biology, School of Basic Medical Science, Peking University, Beijing, 100083, China
| | - Yao Chen
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing, 100083, China; StateKey Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, 100083, China; Department of Pathogen Biology, School of Basic Medical Science, Peking University, Beijing, 100083, China
| | - Lin-Shuang Zhang
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing, 100083, China; StateKey Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, 100083, China; Department of Pathogen Biology, School of Basic Medical Science, Peking University, Beijing, 100083, China
| | - Deng-Ren Ji
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing, 100083, China; StateKey Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, 100083, China; Department of Pathogen Biology, School of Basic Medical Science, Peking University, Beijing, 100083, China
| | - Jie Zhao
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing, 100083, China; StateKey Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, 100083, China; Department of Pathogen Biology, School of Basic Medical Science, Peking University, Beijing, 100083, China
| | - Yan-Rong Yu
- Department of Pathogen Biology, School of Basic Medical Science, Peking University, Beijing, 100083, China
| | - Mo-Zhi Jia
- Department of Pathogen Biology, School of Basic Medical Science, Peking University, Beijing, 100083, China
| | - Chao-Shu Tang
- StateKey Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, 100083, China
| | - Wei Huang
- StateKey Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, 100083, China
| | - Ye-Bo Zhou
- Department of Physiology, Nanjing Medical University, Nanjing, 211166, China.
| | - San-Bao Chai
- Department of Endocrinology and Metabolism, Peking University International Hospital, Beijing, 102206, China.
| | - Yong-Fen Qi
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing, 100083, China; StateKey Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, 100083, China; Department of Pathogen Biology, School of Basic Medical Science, Peking University, Beijing, 100083, China.
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5
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Chang TY, Lan KC, Wu CH, Sheu ML, Yang RS, Liu SH. Nε-(1-Carboxymethyl)-L-lysine, an advanced glycation end product, exerts malignancy on chondrosarcoma via the activation of cancer stemness. Arch Toxicol 2023; 97:2231-2244. [PMID: 37314482 DOI: 10.1007/s00204-023-03539-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 06/06/2023] [Indexed: 06/15/2023]
Abstract
Despite epidemiological evidence that suggests diabetes mellitus is a risk factor for cancer, the link between diabetes mellitus and primary bone cancer is rarely discussed. Chondrosarcomas are primary malignant cartilage tumors with poor prognosis and high metastatic potential. It remains unclear whether hyperglycemia affects the stemness and malignancy of chondrosarcoma cells. Nε-(1-Carboxymethyl)-L-lysine (CML), an advanced glycation end product (AGE), is a major immunological epitope detected in the tissue proteins of diabetic patients. We hypothesized that CML could enhance cancer stemness in chondrosarcoma cells. CML enhanced tumor-sphere formation and the expression of cancer stem cell markers in human chondrosarcoma cell lines. Migration and invasion ability and the epithelial-mesenchymal transition (EMT) process were also induced by CML treatment. Moreover, CML increased the protein expression levels of the receptor for AGE (RAGE), phosphorylated NFκB-p65, and decreased the phosphorylation of AKT and GSK-3. We also found that hyperglycemia with high CML levels facilitated tumor metastasis, whereas tumor growth was not affected in the streptozotocin (STZ)-induced diabetic NOD/SCID tumor xenograft mouse models. Our results indicate that CML enhances chondrosarcoma stemness and metastasis, which may reveal the relationship between AGE and bone cancer metastasis.
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Affiliation(s)
- Ting-Yu Chang
- Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Kuo-Cheng Lan
- Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Chia-Hung Wu
- Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Meei-Ling Sheu
- Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan
- Department of Medical Research, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Rong-Sen Yang
- Department of Orthopedics, National Taiwan University Hospital, Taipei, Taiwan
| | - Shing-Hwa Liu
- Graduate Institute of Toxicology, College of Medicine, National Taiwan University, Taipei, Taiwan.
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan.
- Department of Pediatrics, College of Medicine, National Taiwan University & Hospital, Taipei, Taiwan.
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Ni H, Xi J, Tang J, Yan Y, Chu Y, Zhou J. Therapeutic Potential of Extracellular Vesicles from Different Stem Cells in Chronic Wound Healing. Stem Cell Rev Rep 2023; 19:1596-1614. [PMID: 37178227 DOI: 10.1007/s12015-023-10540-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2023] [Indexed: 05/15/2023]
Abstract
Wound healing has long been a complex problem, especially in chronic wounds. Although debridement, skin grafting, and antimicrobial dressings have been used to treat chronic wounds, their treatment period is long, expensive, and has specific rejection reactions. The poor treatment results of traditional methods have caused psychological stress to patients and a substantial economic burden to society. Extracellular vesicles (EVs) are nanoscale vesicles secreted by cells. They play an essential role in intercellular communication. Numerous studies have confirmed that stem cell-derived extracellular vesicles (SC-EVs) can inhibit overactive inflammation, induce angiogenesis, promote re-epithelization, and reduce scar formation. Therefore, SC-EVs are expected to be a novel cell-free strategy for chronic wound treatment. We first summarize the pathological factors that hinder wound healing and discuss how SC-EVs accelerate chronic wound repair. And then, we also compare the advantages and disadvantages of different SC-EVs for chronic wound treatment. Finally, we discuss the limitations of SC-EVs usage and provide new thoughts for future SC-EVs research in chronic wound treatment.
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Affiliation(s)
- Haoxi Ni
- School of Medicine, Jiangsu University, Zhenjiang, 212013, China
| | - Jianbo Xi
- Wujin Institute of Molecular Diagnostics and Precision Cancer Medicine of Jiangsu University, Changzhou, 213017, China
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Changzhou, 213017, China
| | - Jianjun Tang
- Wujin Institute of Molecular Diagnostics and Precision Cancer Medicine of Jiangsu University, Changzhou, 213017, China
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Changzhou, 213017, China
- Department of General Surgery, Wujin Clinical College of Xuzhou Medical University, Changzhou, 213017, China
| | - Yongmin Yan
- Wujin Institute of Molecular Diagnostics and Precision Cancer Medicine of Jiangsu University, Changzhou, 213017, China
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Changzhou, 213017, China
- Department of Laboratory Medicine, Wujin Hospital Affiliated with Jiangsu University, Changzhou, 213017, China
| | - Ying Chu
- Wujin Institute of Molecular Diagnostics and Precision Cancer Medicine of Jiangsu University, Changzhou, 213017, China.
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Changzhou, 213017, China.
| | - Jing Zhou
- Wujin Institute of Molecular Diagnostics and Precision Cancer Medicine of Jiangsu University, Changzhou, 213017, China.
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Changzhou, 213017, China.
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Juranek J, Mukherjee K, Kordas B, Załęcki M, Korytko A, Zglejc-Waszak K, Szuszkiewicz J, Banach M. Role of RAGE in the Pathogenesis of Neurological Disorders. Neurosci Bull 2022; 38:1248-1262. [PMID: 35729453 PMCID: PMC9554177 DOI: 10.1007/s12264-022-00878-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 03/03/2022] [Indexed: 11/30/2022] Open
Abstract
This review reflects upon our own as well as other investigators' studies on the role of receptor for advanced glycation end-products (RAGE), bringing up the latest information on RAGE in physiology and pathology of the nervous system. Over the last ten years, major progress has been made in uncovering many of RAGE-ligand interactions and signaling pathways in nervous tissue; however, the translation of these discoveries into clinical practice has not come to fruition yet. This is likely, in part to be the result of our incomplete understanding of this crucial signaling pathway. Clinical trials examining the therapeutic efficacy of blocking RAGE-external ligand interactions by genetically engineered soluble RAGE or an endogenous RAGE antagonist, has not stood up to its promise; however, other trials with different blocking agents are being considered with hope for therapeutic success in diseases of the nervous system.
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Affiliation(s)
- Judyta Juranek
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury, 10-085, Olsztyn, Poland.
| | - Konark Mukherjee
- Fralin Biomedical Research Institute at VTC, Virginia Tech, Blacksburg, VA, 24016, USA
| | - Bernard Kordas
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury, 10-085, Olsztyn, Poland
| | - Michał Załęcki
- Department of Animal Anatomy, Faculty of Veterinary Medicine, University of Warmia and Mazury, 10-719, Olsztyn, Poland
| | - Agnieszka Korytko
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury, 10-085, Olsztyn, Poland
| | - Kamila Zglejc-Waszak
- Department of Human Physiology and Pathophysiology, School of Medicine, University of Warmia and Mazury, 10-085, Olsztyn, Poland
| | - Jarosław Szuszkiewicz
- Department of Materials and Machines Technology, Faculty of Technical Sciences, University of Warmia and Mazury, 10-719, Olsztyn, Poland
| | - Marta Banach
- Department of Neurology, Collegium Medicum, Jagiellonian University, 31-008, Kraków, Poland.
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8
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Yildiz AS, Ustundag FD, Tiber PM, Dogan B. The relationship between vitamin D receptor gene polymorphisms and periodontitis in turkish individuals with type 2 diabetes mellitus. Niger J Clin Pract 2022; 25:1163-1172. [PMID: 35859479 DOI: 10.4103/njcp.njcp_1894_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Background and Aim Vitamin D receptor (VDR) gene polymorphisms have been implicated in the pathogenesis of many diseases, such as periodontitis and diabetes mellitus (DM). The present study aimed to evaluate the distributions of VDR polymorphisms in diabetic individuals with healthy periodontium (DMH), diabetic individuals with periodontitis (DMP), nondiabetic individuals with healthy periodontium (H), and nondiabetic individuals with periodontitis (P). Material and Methods A total of 200 individuals (DMH = 40, DMP = 60, H = 40, and P = 60) were recruited. All clinical periodontal parameters, demographical, and biochemical variables were recorded. Blood samples were collected, and genomic DNA was isolated by Purelink® Genomic DNA Mini Kit. Genotyping of VDR polymorphisms ApaI, BsmI, FokI, and TaqI were determined by real-time polymerase chain reaction (PCR) using allele-specific probes. Results The distribution of the BsmI variant showed differences between DMH and H groups (P = 0.034). In addition, carrying the GG genotype (OR = 0.317; 95% CI = 0.126-0.797; P = 0.013) and the G allele (OR = 2.373; 95% CI = 1.203-4.681; P = 0.012) increased the risk of type 2 DM. Moreover, it was determined that the frequency of CC genotype of FokI variant was higher in DMP compared to DMH (P = 0.046). It was determined that having the CC genotype (OR = 2.706; 95% CI = 1.185-6.176; P = 0.017) and the C allele (OR = 1.917; 95% CI = 0.995-3.694; P = 0.049) increased the risk of periodontitis among diabetic individuals. No differences were detected among groups in the genotype and allele distributions of ApaI and TaqI variants (P > 0.05). Conclusions The present study showed that the BsmI variant was a risk factor for DM among periodontally healthy individuals and the FokI variant for periodontitis among diabetic individuals.
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Affiliation(s)
- A Saatman Yildiz
- Department of Periodontology, Institute of Health Sciences, Marmara University, Istanbul, Turkey
| | - F D Ustundag
- Department of Biophysics, Institute of Health Sciences, Istanbul, Turkey
| | - P Mega Tiber
- Department of Biophysics, Faculty of Medicine, Marmara University, Istanbul, Turkey
| | - B Dogan
- Department of Periodontology, Faculty of Dentistry, Marmara University, Istanbul, Turkey
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9
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Lorey MB, Öörni K, Kovanen PT. Modified Lipoproteins Induce Arterial Wall Inflammation During Atherogenesis. Front Cardiovasc Med 2022; 9:841545. [PMID: 35310965 PMCID: PMC8927694 DOI: 10.3389/fcvm.2022.841545] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 01/26/2022] [Indexed: 12/15/2022] Open
Abstract
Circulating apolipoprotein B-containing lipoproteins, notably the low-density lipoproteins, enter the inner layer of the arterial wall, the intima, where a fraction of them is retained and modified by proteases, lipases, and oxidizing agents and enzymes. The modified lipoproteins and various modification products, such as fatty acids, ceramides, lysophospholipids, and oxidized lipids induce inflammatory reactions in the macrophages and the covering endothelial cells, initiating an increased leukocyte diapedesis. Lipolysis of the lipoproteins also induces the formation of cholesterol crystals with strong proinflammatory properties. Modified and aggregated lipoproteins, cholesterol crystals, and lipoproteins isolated from human atherosclerotic lesions, all can activate macrophages and thereby induce the secretion of proinflammatory cytokines, chemokines, and enzymes. The extent of lipoprotein retention, modification, and aggregation have been shown to depend largely on differences in the composition of the circulating lipoprotein particles. These properties can be modified by pharmacological means, and thereby provide opportunities for clinical interventions regarding the prevention and treatment of atherosclerotic vascular diseases.
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Affiliation(s)
- Martina B. Lorey
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland
- Molecular and Integrative Biosciences, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - Katariina Öörni
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland
- Molecular and Integrative Biosciences, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
- *Correspondence: Katariina Öörni
| | - Petri T. Kovanen
- Atherosclerosis Research Laboratory, Wihuri Research Institute, Helsinki, Finland
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10
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Satta E, Alfarone C, De Maio A, Gentile S, Romano C, Polverino M, Polverino F. Kidney and lung in pathology: mechanisms and clinical implications. Multidiscip Respir Med 2022; 17:819. [PMID: 35127080 PMCID: PMC8791019 DOI: 10.4081/mrm.2022.819] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 12/04/2021] [Indexed: 11/23/2022] Open
Abstract
There is a close, physiological, relationship between kidney and lung that begin in the fetal age, and is aimed to keep homeostatic balance in the body. From a pathological point of view, the kidneys could be damaged by inflammatory mediators or by immune-mediated factors linked to a primary lung disease or, conversely, it could be the kidney disease that causes lung damage. Non-immunological mechanisms are frequently involved in renal and pulmonary diseases, as observed in chronic conditions. This crosstalk have clinical and therapeutic consequences. This review aims to describe the pulmonary-renal link in physiology and in pathological conditions.
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11
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Jenifer Cynthia RA, Srinivasan S, Vijay VK, Saravanan D, Balaji S, Navarasu M. Estimation of Serum Procalcitonin (ProCT/PCT) Levels in Periodontally Healthy Individuals and Chronic Periodontitis Patients with Type II Diabetes Mellitus – An Original Research. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2022; 14:S955-S958. [PMID: 36110712 PMCID: PMC9469443 DOI: 10.4103/jpbs.jpbs_746_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 12/14/2021] [Indexed: 11/22/2022] Open
Abstract
Aim: The present study aimed to estimate the serum procalcitonin (PCT) levels in periodontally healthy individuals and chronic periodontitis patients with Type II diabetes mellitus (DM). Materials and Methods: Forty-five male subjects aged 25–60 years were enrolled in the study and grouped as Group I (healthy), Group II (chronic periodontitis), and Group III (chronic periodontitis with Type II DM). Clinical parameters (dental plaque scores, bleeding scores, probing pocket depth, and loss of attachment) and glycemic parameters (random blood sugar and glycated hemoglobin levels) were recorded. Serum procalcitonin levels were analyzed using Raybio® Human Procalcitonin Enzyme-Linked Immunosorbent Assay kit using the sandwich technique. All the data obtained were tabulated and analyzed using SYSTAT 12 statistical software. Kruskal–Wallis test was applied to compare the mean scores between the three study groups, and Spearman's ρ correlation coefficient was used to find out the association. Results: Serum procalcitonin levels were markedly increased in periodontitis group when compared to the healthy group. The mean serum levels of procalcitonin in Group I, Group II, and Group III were 22.52 pg/ml, 64.23 pg/ml, and 185.86 pg/ml, respectively. The variation in the procalcitonin levels was statistically significant at P < 0.001. Conclusion: The expression of procalcitonin in serum was increased to eightfold in the periodontitis group with diabetes in comparison to the healthy group, which shows that periodontal disease can cause the release of procalcitonin.
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12
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Kluever V, Fornasiero EF. Principles of brain aging: Status and challenges of modeling human molecular changes in mice. Ageing Res Rev 2021; 72:101465. [PMID: 34555542 DOI: 10.1016/j.arr.2021.101465] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/13/2021] [Accepted: 09/16/2021] [Indexed: 01/22/2023]
Abstract
Due to the extension of human life expectancy, the prevalence of cognitive impairment is rising in the older portion of society. Developing new strategies to delay or attenuate cognitive decline is vital. For this purpose, it is imperative to understand the cellular and molecular events at the basis of brain aging. While several organs are directly accessible to molecular analysis through biopsies, the brain constitutes a notable exception. Most of the molecular studies are performed on postmortem tissues, where cell death and tissue damage have already occurred. Hence, the study of the molecular aspects of cognitive decline largely relies on animal models and in particular on small mammals such as mice. What have we learned from these models? Do these animals recapitulate the changes observed in humans? What should we expect from future mouse studies? In this review we answer these questions by summarizing the state of the research that has addressed cognitive decline in mice from several perspectives, including genetic manipulation and omics strategies. We conclude that, while extremely valuable, mouse models have limitations that can be addressed by the optimal design of future studies and by ensuring that results are cross-validated in the human context.
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13
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Glyoxal-Lysine Dimer, an Advanced Glycation End Product, Induces Oxidative Damage and Inflammatory Response by Interacting with RAGE. Antioxidants (Basel) 2021; 10:antiox10091486. [PMID: 34573117 PMCID: PMC8470194 DOI: 10.3390/antiox10091486] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 01/16/2023] Open
Abstract
The glyoxal-lysine dimer (GOLD), which is a glyoxal (GO)-derived advanced glycation end product (AGE), is produced by the glycation reaction. In this study, we evaluated the effect of GOLD on the oxidative damage and inflammatory response in SV40 MES 13 mesangial cells. GOLD significantly increased the linkage with the V-type immunoglobulin domain of RAGE, a specific receptor of AGE. We found that GOLD treatment increased RAGE expression and reactive oxygen species (ROS) production in mesangial cells. GOLD remarkably regulated the protein and mRNA expression of nuclear factor erythroid 2-related factor 2 (NRF2) and glyoxalase 1 (GLO1). In addition, mitochondrial deterioration and inflammation occurred via GOLD-induced oxidative stress in mesangial cells. GOLD regulated the mitogen-activated protein kinase (MAPK) and the release of proinflammatory cytokines associated with the inflammatory mechanism of mesangial cells. Furthermore, oxidative stress and inflammatory responses triggered by GOLD were suppressed through RAGE inhibition using RAGE siRNA. These results demonstrate that the interaction of GOLD and RAGE plays an important role in the function of mesangial cells.
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14
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Bai L, Zhang L, Pan T, Wang W, Wang D, Turner C, Zhou X, He H. Idiopathic pulmonary fibrosis and diabetes mellitus: a meta-analysis and systematic review. Respir Res 2021; 22:175. [PMID: 34103046 PMCID: PMC8188656 DOI: 10.1186/s12931-021-01760-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 05/26/2021] [Indexed: 11/25/2022] Open
Abstract
Background Idiopathic pulmonary fibrosis (IPF) is a chronic diffuse interstitial lung disease, of which the etiology has been poorly understood. Several studies have focused on the relationship between IPF and diabetes mellitus (DM) in the past years but have failed to reach a consensus. This meta-analysis aimed to examine the association between diabetes to IPF. Methods We accumulated studies investigating the association between DM and IPF from databases including Medline, Cochrane Library, Embase, Web of Science, and China National Knowledge Infrastructure. RevMan 5.3 and the Newcastle–Ottawa Scale (NOS) were utilized to analyze the data and assess the quality of the included studies. The value of odds ratio (OR) with 95% confidence interval (CI) was used as the measure to estimate the risk of DM in IPF. Heterogeneity was assessed by I2 statistics. We also performed subgroup analysis, meta-regression, and Egger’s test for bias analysis. Results Nine case–control studies with 5096 IPF patients and 19,095 control subjects were included in the present meta-analysis, which indicated a positive correlation between DM and IPF (OR 1.65, 95% CI 1.30–2.10; P < 0.0001). Meta-regression and subgroup analysis negated the influence of covariates like cigarette smoking, age and gender, but the heterogeneity existed and could not be fully explained. Conclusion IPF and DM may be associated, but the causal relationship remains indeterminate till now. Further rigorously designed studies are required to confirm the present findings and investigate the possible mechanisms behind the effect of DM on IPF.
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Affiliation(s)
- Le Bai
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China
| | - Li Zhang
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China
| | - Tingyu Pan
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China
| | - Wei Wang
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China.,Department of GCP Research Center, Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029, China
| | - Dian Wang
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China.,Department of GCP Research Center, Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029, China
| | - Cassidy Turner
- Arizona Metabolomics Laboratory, College of Health Solutions, Arizona State University, Scottsdale, AZ, USA
| | - Xianmei Zhou
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China. .,Department of Respiratory Medicine, Jiangsu Province Hospital of Chinese Medicine, 155 Hanzhong Road, Nanjing, 210029, Jiangsu Province, People's Republic of China.
| | - Hailang He
- Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, 210029, China. .,Department of Respiratory Medicine, Jiangsu Province Hospital of Chinese Medicine, 155 Hanzhong Road, Nanjing, 210029, Jiangsu Province, People's Republic of China.
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15
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Asaro RJ, Cabrales P. Red Blood Cells: Tethering, Vesiculation, and Disease in Micro-Vascular Flow. Diagnostics (Basel) 2021; 11:diagnostics11060971. [PMID: 34072241 PMCID: PMC8228733 DOI: 10.3390/diagnostics11060971] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/12/2021] [Accepted: 05/14/2021] [Indexed: 12/14/2022] Open
Abstract
The red blood cell has become implicated in the progression of a range of diseases; mechanisms by which red cells are involved appear to include the transport of inflammatory species via red cell-derived vesicles. We review this role of RBCs in diseases such as diabetes mellitus, sickle cell anemia, polycythemia vera, central retinal vein occlusion, Gaucher disease, atherosclerosis, and myeloproliferative neoplasms. We propose a possibly unifying, and novel, paradigm for the inducement of RBC vesiculation during vascular flow of red cells adhered to the vascular endothelium as well as to the red pulp of the spleen. Indeed, we review the evidence for this hypothesis that links physiological conditions favoring both vesiculation and enhanced RBC adhesion and demonstrate the veracity of this hypothesis by way of a specific example occurring in splenic flow which we argue has various renderings in a wide range of vascular flows, in particular microvascular flows. We provide a mechanistic basis for membrane loss and the formation of lysed red blood cells in the spleen that may mediate their turnover. Our detailed explanation for this example also makes clear what features of red cell deformability are involved in the vesiculation process and hence require quantification and a new form of quantitative indexing.
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Affiliation(s)
- Robert J. Asaro
- Department of Structural Engineering, University of California, San Diego, CA 92093, USA
- Correspondence: ; Tel.: +1-619-890-6888; Fax: +1-858-534-6373
| | - Pedro Cabrales
- Department of Bioengineering, University of California, San Diego, CA 92093, USA;
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16
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Kishi S, Nishiguchi Y, Honoki K, Mori S, Fujiwara-Tani R, Sasaki T, Fujii K, Kawahara I, Goto K, Nakashima C, Kido A, Tanaka Y, Luo Y, Kuniyasu H. Role of Glycated High Mobility Group Box-1 in Gastric Cancer. Int J Mol Sci 2021; 22:5185. [PMID: 34068442 PMCID: PMC8153607 DOI: 10.3390/ijms22105185] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/06/2021] [Accepted: 05/11/2021] [Indexed: 12/30/2022] Open
Abstract
Advanced glycation end products (AGEs) are produced in response to a high-glucose environment and oxidative stress and exacerbate various diseases. Nε-(Carboxymethyl)lysine (CML) is an AGE that is produced by the glycation of lysine residues of proteins. There are a few reports on alterations in protein function due to CML modification; however, its association with cancer is not clear. We investigated the significance of CML modification in high mobility group box protein-1 (HMGB1), a cytokine that is significantly associated with cancer progression. Treatment of the gastric cancer cell lines TMK1 and MKN74 with glyoxal or glucose resulted in increased CML modification compared to untreated cells. CML-HMGB1 was modified via oxidation and more pronouncedly activated the receptor for AGE and downstream AKT and NF-κB compared to naïve HMGB1 and oxidized HMGB1. CML-HMGB1 bound with reduced affinity to DNA and histone H3, resulting in enhanced extranuclear translocation and extracellular secretion. Treatment of gastric cancer cells with CML-HMGB1 enhanced cell proliferation and invasion, sphere formation, and protection from thapsigargin-induced apoptosis, and decreased 5-FU sensitivity in comparison to HMGB1. Further, CML-HMGB1 was detected at various levels in all the 10 gastric cancer tumor specimens. HMGB1 levels correlated with primary tumor progression and distant metastasis, whereas CML-HMGB1 levels were associated with primary tumor progression, lymph node metastasis, distant metastasis, and stage. In addition, CML-HMGB1 levels correlated with oxidative stress in cancer tissues and resistance to neoadjuvant therapy. Therefore, CML modification of HMGB1 enhanced the cancer-promoting effect of HMGB1. In this study, CML-HMGB1 has been highlighted as a new therapeutic target, and analysis of the molecular structure of CML-HMGB1 is desired in the future.
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Affiliation(s)
- Shingo Kishi
- Department of Molecular Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (S.K.); (Y.N.); (S.M.); (R.F.-T.); (T.S.); (K.F.); (I.K.); (K.G.); (C.N.)
| | - Yukiko Nishiguchi
- Department of Molecular Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (S.K.); (Y.N.); (S.M.); (R.F.-T.); (T.S.); (K.F.); (I.K.); (K.G.); (C.N.)
| | - Kanya Honoki
- Department of Orthopedics, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan; (K.H.); (A.K.); (Y.T.)
| | - Shiori Mori
- Department of Molecular Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (S.K.); (Y.N.); (S.M.); (R.F.-T.); (T.S.); (K.F.); (I.K.); (K.G.); (C.N.)
| | - Rina Fujiwara-Tani
- Department of Molecular Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (S.K.); (Y.N.); (S.M.); (R.F.-T.); (T.S.); (K.F.); (I.K.); (K.G.); (C.N.)
| | - Takamitsu Sasaki
- Department of Molecular Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (S.K.); (Y.N.); (S.M.); (R.F.-T.); (T.S.); (K.F.); (I.K.); (K.G.); (C.N.)
| | - Kiyomu Fujii
- Department of Molecular Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (S.K.); (Y.N.); (S.M.); (R.F.-T.); (T.S.); (K.F.); (I.K.); (K.G.); (C.N.)
| | - Isao Kawahara
- Department of Molecular Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (S.K.); (Y.N.); (S.M.); (R.F.-T.); (T.S.); (K.F.); (I.K.); (K.G.); (C.N.)
| | - Kei Goto
- Department of Molecular Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (S.K.); (Y.N.); (S.M.); (R.F.-T.); (T.S.); (K.F.); (I.K.); (K.G.); (C.N.)
| | - Chie Nakashima
- Department of Molecular Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (S.K.); (Y.N.); (S.M.); (R.F.-T.); (T.S.); (K.F.); (I.K.); (K.G.); (C.N.)
| | - Akira Kido
- Department of Orthopedics, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan; (K.H.); (A.K.); (Y.T.)
| | - Yasuhito Tanaka
- Department of Orthopedics, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan; (K.H.); (A.K.); (Y.T.)
| | - Yi Luo
- Department of Molecular Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (S.K.); (Y.N.); (S.M.); (R.F.-T.); (T.S.); (K.F.); (I.K.); (K.G.); (C.N.)
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Hiroki Kuniyasu
- Department of Molecular Pathology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8521, Japan; (S.K.); (Y.N.); (S.M.); (R.F.-T.); (T.S.); (K.F.); (I.K.); (K.G.); (C.N.)
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17
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Banerjee S. Long-term incubation of myoglobin with glyoxal induces amyloid like aggregation of the heme protein: Implications of advanced glycation end products in protein conformational disorders. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Jain A, Chawla M, Kumar A, Chawla R, Grover V, Ghosh S, Pandit N, Chawla P. Management of periodontal disease in patients with diabetes- good clinical practice guidelines: A joint statement by Indian Society of Periodontology and Research Society for the Study of Diabetes in India. J Indian Soc Periodontol 2020; 24:498-524. [PMID: 33424167 PMCID: PMC7781257 DOI: 10.4103/jisp.jisp_688_20] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 10/10/2020] [Indexed: 12/14/2022] Open
Abstract
There is a huge body of literature suggesting an association and a bidirectional relationship between periodontal disease and diabetes. Diabetes and periodontal diseases are both chronic diseases with a high prevalence. Dentists/periodontists, in their daily clinical practice, very often attend to diabetes patients with diverse oral health conditions and cater to their dental treatment needs. Safe and effective periodontal therapy in this population requires a broad understanding of diabetes, medical management of diabetes, and essential modifications to dental/periodontal therapy that may be required. This paper describes a joint statement put forth by the Indian Society of Periodontology and the Research Society for the Study of Diabetes in India aiming to provide expert consensus and evidence-based guidelines for optimal clinical management of periodontal conditions in diabetes patients or patients at risk for diabetes. Although this paper is not envisioned to be a comprehensive review of this topic, it intends to provide the guidelines for dental professionals and periodontists.
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Affiliation(s)
- Ashish Jain
- Department of Periodontology, Dr. H. S. J. Institute of Dental Sciences, Panjab University, Chandigarh, India
| | - Manoj Chawla
- Lina Diabetes Care Centre, Mumbai, Maharashtra, India
| | - Ashish Kumar
- Department of Periodontology, Dental College, Regional Institute of Medical Sciences, Imphal, Manipur, India
| | - Rajeev Chawla
- North Delhi Diabetes Centre, Rohini, New Delhi, India
| | - Vishakha Grover
- Department of Periodontology, Dr. H. S. J. Institute of Dental Sciences, Panjab University, Chandigarh, India
| | - Sujoy Ghosh
- Department of Endocrinology and Metabolism, Institute of Post Graduate Medical Education and Research, Kolkata, West Bengal, India
| | - Nymphea Pandit
- Department of Periodontology, D. A. V. Dental College and Hospital, Yamunanagar, Haryana, India
| | - Purvi Chawla
- Lina Diabetes Care Centre, Mumbai, Maharashtra, India
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19
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Andersson U, Ottestad W, Tracey KJ. Extracellular HMGB1: a therapeutic target in severe pulmonary inflammation including COVID-19? Mol Med 2020; 26:42. [PMID: 32380958 PMCID: PMC7203545 DOI: 10.1186/s10020-020-00172-4] [Citation(s) in RCA: 167] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 04/23/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The 2019 novel coronavirus disease (COVID-19) causes for unresolved reasons acute respiratory distress syndrome in vulnerable individuals. There is a need to identify key pathogenic molecules in COVID-19-associated inflammation attainable to target with existing therapeutic compounds. The endogenous damage-associated molecular pattern (DAMP) molecule HMGB1 initiates inflammation via two separate pathways. Disulfide-HMGB1 triggers TLR4 receptors generating pro-inflammatory cytokine release. Extracellular HMGB1, released from dying cells or secreted by activated innate immunity cells, forms complexes with extracellular DNA, RNA and other DAMP or pathogen-associated molecular (DAMP) molecules released after lytic cell death. These complexes are endocytosed via RAGE, constitutively expressed at high levels in the lungs only, and transported to the endolysosomal system, which is disrupted by HMGB1 at high concentrations. Danger molecules thus get access to cytosolic proinflammatory receptors instigating inflammasome activation. It is conceivable that extracellular SARS-CoV-2 RNA may reach the cellular cytosol via HMGB1-assisted transfer combined with lysosome leakage. Extracellular HMGB1 generally exists in vivo bound to other molecules, including PAMPs and DAMPs. It is plausible that these complexes are specifically removed in the lungs revealed by a 40% reduction of HMGB1 plasma levels in arterial versus venous blood. Abundant pulmonary RAGE expression enables endocytosis of danger molecules to be destroyed in the lysosomes at physiological HMGB1 levels, but causing detrimental inflammasome activation at high levels. Stress induces apoptosis in pulmonary endothelial cells from females but necrosis in cells from males. CONCLUSION Based on these observations we propose extracellular HMGB1 to be considered as a therapeutic target for COVID-19.
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Affiliation(s)
- Ulf Andersson
- Department of Women’s and Children’s Health, Karolinska Institutet at Karolinska University Hospital, Tomtebodavägen 18A, 171 77 Stockholm, Sweden
| | - William Ottestad
- Air Ambulance department, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Kevin J. Tracey
- Center for Biomedical Science and Bioelectronic Medicine, Feinstein Institutes for Medical Research, Northwell Health, 350 Community Drive, Manhasset, NY 11030 USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, 500 Hofstra University, Hempstead, New York, 11030 USA
- Department of Surgery, North Shore University Hospital, Northwell Health, 300 Community Drive, Manhasset, NY 11030 USA
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20
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Belmokhtar K, Ortillon J, Jaisson S, Massy ZA, Boulagnon Rombi C, Doué M, Maurice P, Fritz G, Gillery P, Schmidt AM, Rieu P, Touré F. Receptor for advanced glycation end products: a key molecule in the genesis of chronic kidney disease vascular calcification and a potential modulator of sodium phosphate co-transporter PIT-1 expression. Nephrol Dial Transplant 2020; 34:2018-2030. [PMID: 30778553 DOI: 10.1093/ndt/gfz012] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 01/05/2019] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) is associated with increased cardiovascular mortality, frequent vascular calcification (VC) and accumulation of uraemic toxins. Advanced glycation end products and S100 proteins interact with the receptor for advanced glycation end products (RAGE). In the present work, we aimed to investigate the role(s) of RAGE in the CKD-VC process. METHODS Apoe-/- or Apoe-/-Ager (RAGE)-/- male mice were assigned to CKD or sham-operated groups. A high-phosphate diet was given to a subgroup of Apoe-/-and Apoe-/-Ager-/- CKD mice. Primary cultures of Ager+/+ and Ager-/- vascular smooth muscle cells (VSMCs) were established and stimulated with either vehicle, inorganic phosphate (Pi) or RAGE ligands (S100A12; 20 µM). RESULTS After 12 weeks of CKD we observed a significant increase in RAGE ligand (AGE and S100 proteins) concentrations in the serum of CKD Apoe-/- mice. Ager messenger RNA (mRNA) levels were 4-fold higher in CKD vessels of Apoe-/- mice. CKD Apoe-/- but not CKD Apoe-/- or Ager-/- mice displayed a marked increase in the VC surface area. Similar trends were found in the high-phosphate diet condition. mRNA levels of Runx2 significantly increased in the Apoe-/- CKD group. In vitro, stimulation of Ager+/+VSMCs with Pi or S100A12 induced mineralization and osteoblast transformation, and this was inhibited by phosphonoformic acid (Pi co-transporters inhibitor) and Ager deletion. In vivo and in vitro RAGE was necessary for regulation of the expression of Pit-1, at least in part through production of reactive oxygen species. CONCLUSION RAGE, through the modulation of Pit-1 expression, is a key molecule in the genesis of VC.
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Affiliation(s)
- Karim Belmokhtar
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,Laboratoire de Néphrologie, Univesrity of Reims, Faculté de Médecine, Reims, France
| | - Jeremy Ortillon
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,Laboratoire de Néphrologie, Univesrity of Reims, Faculté de Médecine, Reims, France
| | - Stéphane Jaisson
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,University Hospital of Reims, Maison Blanche Hospital, Laboratory of Pediatric Biology and Research, Reims, France
| | - Ziad A Massy
- Division of Nephrology, Ambroise Paré Hospital, APHP, Versailles Saint-Quentin-en-Yvelines University (Paris-Ile-de-France-Ouest University), UVSQ, Boulogne Billancourt/Paris, France.,Inserm U1018, Team5, CESP, Paris Saclay Unioversityand Versailles Saint-Quentin-en-Yvelines University (Paris-Ile-de-France-Ouest University, UVSQ), Villejuif, France
| | - Camille Boulagnon Rombi
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,CHU Reims, Division of Anatomopathology, Reims, France
| | - Manon Doué
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Pascal Maurice
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France
| | - Günter Fritz
- Institute of Neuropathology, University of Freiburg, Germany
| | - Philippe Gillery
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,University Hospital of Reims, Maison Blanche Hospital, Laboratory of Pediatric Biology and Research, Reims, France
| | | | - Philippe Rieu
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,Laboratoire de Néphrologie, Univesrity of Reims, Faculté de Médecine, Reims, France.,CHU Reims, Division of Nephrology, Reims, France
| | - Fatouma Touré
- Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France.,Laboratoire de Néphrologie, Univesrity of Reims, Faculté de Médecine, Reims, France.,CHU Reims, Division of Nephrology, Reims, France
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21
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Khordadmehr M, Ghaderi S, Mesgari-Abbasi M, Jigari-Asl F, Nofouzi K, Tayefi-Nasrabadi H, McIntyre G. The Beneficial Effects of Actinomycetales Immune Modulators in the Pancreas of Diabetic Rats. Adv Pharm Bull 2020; 11:371-377. [PMID: 33880360 PMCID: PMC8046390 DOI: 10.34172/apb.2021.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/21/2020] [Accepted: 04/21/2020] [Indexed: 11/09/2022] Open
Abstract
Purpose: Type 1 diabetes mellitus (T1DM) has dramatically increased in recent years, especially in young people, and limits the life quality of the patients involved. Thus, many researchers are performing extensive studies to find alternative treatments for DM. Methods: Here, we evaluated the improvement effects of the heat-killed Actinomycetales species, including Gordonia bronchialis, and Tsukamurella inchonensis in streptozotocin (STZ)- diabetic rats by biochemical, immunological, and histopathological examinations. Results: The present findings exhibited a dramatic and progressive alteration in the serum levels of interleukin-6 (IL-6), IL-10 and tumor necrosis factor-α (TNF-α) in the diabetic group, which were related to the blood glucose and insulin levels, oxidative stress defense (evaluated by TAC and MDA activities), and the pancreas biochemical indicators (such as amylase and lipase). More importantly, the present results were consistent with the histopathological findings, which included cellular degeneration, vascular congestion, hemorrhage, focal necrosis associated with mononuclear cell infiltration. Interestingly, all of the diabetic changes in the blood serum and tissues improved remarkably in the treated groups by Actinomycetales species. Conclusion: Surprisingly, most of the current diabetic complications effectively attenuated after oral administration of both Actinomycetales species, particularly with a high dose of T. inchonensis. Thus, it is concluded that the heat-killed Actinomycetales species can prevent and improve the progression of T1DM and its various complications profoundly.
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Affiliation(s)
- Monireh Khordadmehr
- Department of Pathobiology, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Solin Ghaderi
- Department of Pathobiology, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | | | - Farinaz Jigari-Asl
- Department of Pathobiology, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Katayoon Nofouzi
- Department of Pathobiology, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | | | - Graham McIntyre
- Center for Infectious Diseases and International Health, Windeyer Institute for Medical Sciences, University College London, UK
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22
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Zhai R, Blondonnet R, Ebrahimi E, Belville C, Audard J, Gross C, Choltus H, Henrioux F, Constantin JM, Pereira B, Blanchon L, Sapin V, Jabaudon M. The receptor for advanced glycation end-products enhances lung epithelial wound repair: An in vitro study. Exp Cell Res 2020; 391:112030. [PMID: 32330509 DOI: 10.1016/j.yexcr.2020.112030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/17/2020] [Accepted: 04/19/2020] [Indexed: 12/22/2022]
Abstract
Re-epithelialization of the alveolar surface is a key process of lung alveolar epithelial barrier repair after acute lung injury. The receptor for advanced glycation end-products (RAGE) pathway plays key roles in lung homeostasis, and its involvement in wound repair has been already reported in human bronchial epithelial cells. However, its effects on lung alveolar epithelial repair after injury remain unknown. We investigated whether RAGE stimulation with its ligands high-mobility group box 1 protein (HMGB1) or advanced glycation end-products (AGEs), alone or associated with RAGE inhibition using RAGE antagonist peptide, affects in vitro wound healing in human alveolar epithelial A549 cells. We further asked whether these effects could be associated with changes in cell proliferation and migration. We found that treatment of A549 cells with HMGB1 or AGEs promotes RAGE-dependent wound healing after a scratch assay. In addition, both RAGE ligands increased cell proliferation in a RAGE-dependent manner. Treatment with HMGB1 increased migration of alveolar epithelial cells at 12 h, independently of RAGE, whereas AGEs stimulated migration as measured 48 h after injury in a RAGE-dependent manner. Taken together, these results suggest that RAGE pathway is involved in lung alveolar epithelial wound repair, possibly through enhanced cell migration and proliferation.
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Affiliation(s)
- Ruoyang Zhai
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France
| | - Raiko Blondonnet
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France; Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Ebrahim Ebrahimi
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France; Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Corinne Belville
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France
| | - Jules Audard
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France; Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Christelle Gross
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France
| | - Helena Choltus
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France
| | - Fanny Henrioux
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France
| | - Jean-Michel Constantin
- Sorbonne University, GRC 29, AP-HP, DMU DREAM, Department of Anesthesiology and Critical Care, Pitié-Salpêtrière Hospital, Paris, France
| | - Bruno Pereira
- Biostatistics Unit, Department of Clinical Research and Innovation (DRCI), CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Loic Blanchon
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France
| | - Vincent Sapin
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France; Department of Medical Biochemistry and Molecular Genetics, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Matthieu Jabaudon
- Université Clermont Auvergne, CNRS, INSERM, GReD, Clermont-Ferrand, France; Department of Perioperative Medicine, CHU Clermont-Ferrand, Clermont-Ferrand, France; Division of Allergy, Pulmonary, and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.
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23
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Grune T. Oxidized protein aggregates: Formation and biological effects. Free Radic Biol Med 2020; 150:120-124. [PMID: 32097679 DOI: 10.1016/j.freeradbiomed.2020.02.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/13/2020] [Accepted: 02/18/2020] [Indexed: 12/16/2022]
Abstract
The study of protein aggregates has a long history. While in the first decades until the 80ies of the 20th century only the observation of the presence of such aggregates was reported, later the biochemistry of the formation and the biological effects of theses aggregates were described. This review focusses on the complexity of the biological effects of protein aggregates and its potential role in the aging process.
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Affiliation(s)
- Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), Arthur-Scheunert-Allee 114-116, 14558, Nuthetal, Germany; German Center for Diabetes Research (DZD), 85764, Muenchen-Neuherberg, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Berlin, 10785, Berlin, Germany; University of Potsdam, Institute of Nutritional Science, 14558, Nuthetal, Germany.
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24
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Gross C, Belville C, Lavergne M, Choltus H, Jabaudon M, Blondonnet R, Constantin JM, Chiambaretta F, Blanchon L, Sapin V. Advanced Glycation End Products and Receptor (RAGE) Promote Wound Healing of Human Corneal Epithelial Cells. Invest Ophthalmol Vis Sci 2020; 61:14. [PMID: 32176265 PMCID: PMC7401750 DOI: 10.1167/iovs.61.3.14] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 12/30/2019] [Indexed: 12/15/2022] Open
Abstract
Purpose We used a human corneal epithelial cell (HCE) line to determine the involvement of the advanced glycation end products (AGEs) / receptor for AGEs (RAGE) couple in corneal epithelium wound healing. Methods After wounding, HCE cells were exposed to two major RAGE ligands (HMGB1 and AGEs), and wound healing was evaluated using the in vitro scratch assay. Following wound healing, the HCE cells were used to study the influence of the RAGE ligands on HCE proliferation, invasion, and migration. Activation of the nuclear factor (NF)-κB signaling pathway by the AGEs/RAGE couple was tested using a luciferase reporter assay. Functional transcriptional regulation by this pathway was confirmed by quantification of expression of the connexin 43 target gene. For each experiment, specific RAGE involvement was confirmed by small interfering RNA treatments. Results AGEs treatment at a dose of 100 µg/mL significantly improved the wound healing process in a RAGE-dependent manner by promoting cell migration, whereas HMGB1 had no effect. No significant influence of the AGEs/RAGE couple was observed on cell proliferation and invasion. However, this treatment induced an early activation of the NF-κB pathway and positively regulated the expression of the target gene, connexin 43, at both the mRNA and protein levels. Conclusions Our results demonstrate that the RAGE pathway is activated by AGEs treatment and is involved in the promotion of corneal epithelial wound healing. This positive action is observed only during the early stages of wound healing, as illustrated by the quick activation of the NF-κB pathway and induction of connexin 43 expression.
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MESH Headings
- Cell Line
- Cell Movement/drug effects
- Cell Movement/physiology
- Cell Proliferation/drug effects
- Cell Proliferation/physiology
- Cells, Cultured
- Connexin 43/genetics
- Connexin 43/metabolism
- Corneal Injuries/pathology
- Corneal Injuries/physiopathology
- Dose-Response Relationship, Drug
- Epithelial Cells/drug effects
- Epithelial Cells/metabolism
- Epithelium, Corneal/cytology
- Epithelium, Corneal/drug effects
- Epithelium, Corneal/injuries
- Epithelium, Corneal/physiology
- Glycation End Products, Advanced/administration & dosage
- Glycation End Products, Advanced/pharmacology
- Glycation End Products, Advanced/physiology
- HMGB1 Protein/administration & dosage
- HMGB1 Protein/pharmacology
- Humans
- NF-kappa B/metabolism
- RNA, Messenger/genetics
- RNA, Small Interfering/genetics
- Receptor for Advanced Glycation End Products/genetics
- Receptor for Advanced Glycation End Products/physiology
- Signal Transduction/physiology
- Wound Healing/drug effects
- Wound Healing/physiology
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Affiliation(s)
- Christelle Gross
- Team “Translational approach to epithelial injury and repair”, Université Clermont Auvergne, CNRS, Inserm, GReD, Clermont-Ferrand, France
| | - Corinne Belville
- Team “Translational approach to epithelial injury and repair”, Université Clermont Auvergne, CNRS, Inserm, GReD, Clermont-Ferrand, France
| | - Marilyne Lavergne
- Team “Translational approach to epithelial injury and repair”, Université Clermont Auvergne, CNRS, Inserm, GReD, Clermont-Ferrand, France
| | - Héléna Choltus
- Team “Translational approach to epithelial injury and repair”, Université Clermont Auvergne, CNRS, Inserm, GReD, Clermont-Ferrand, France
| | - Matthieu Jabaudon
- Team “Translational approach to epithelial injury and repair”, Université Clermont Auvergne, CNRS, Inserm, GReD, Clermont-Ferrand, France
- CHU Clermont-Ferrand, Department of Perioperative Medicine, Clermont-Ferrand, France
| | - Raïko Blondonnet
- Team “Translational approach to epithelial injury and repair”, Université Clermont Auvergne, CNRS, Inserm, GReD, Clermont-Ferrand, France
- CHU Clermont-Ferrand, Department of Perioperative Medicine, Clermont-Ferrand, France
| | - Jean-Michel Constantin
- Team “Translational approach to epithelial injury and repair”, Université Clermont Auvergne, CNRS, Inserm, GReD, Clermont-Ferrand, France
- CHU Clermont-Ferrand, Department of Perioperative Medicine, Clermont-Ferrand, France
| | - Frédéric Chiambaretta
- Team “Translational approach to epithelial injury and repair”, Université Clermont Auvergne, CNRS, Inserm, GReD, Clermont-Ferrand, France
- CHU Clermont-Ferrand, Ophthalmology Department, Clermont-Ferrand, France
| | - Loïc Blanchon
- Team “Translational approach to epithelial injury and repair”, Université Clermont Auvergne, CNRS, Inserm, GReD, Clermont-Ferrand, France
| | - Vincent Sapin
- Team “Translational approach to epithelial injury and repair”, Université Clermont Auvergne, CNRS, Inserm, GReD, Clermont-Ferrand, France
- CHU Clermont-Ferrand, Biochemistry and Molecular Genetic Department, Clermont-Ferrand, France
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25
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Zeltzer E, Klein O, Rashid G, Katz D, Korzets Z, Bernheim J. Intraperitoneal Infusion of Glucose-Based Dialysate in the Rat—An Animal Model for the Study of Peritoneal Advanced Glycation End-Products Formation and Effect on Peritoneal Transport. Perit Dial Int 2020. [DOI: 10.1177/089686080002000613] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
ObjectiveGlucose-based dialysate induces non enzymatic glycation within the peritoneal cavity. To evaluate the relationship between the formation of advanced glycation end-products (AGEs) and peritoneal transfer for small solutes and macromolecules, we developed a model of simulated peritoneal dialysis (PD) in normal rats.MethodsMale albino rats of the Charles River strain were divided into two sets of 3 groups (15 – 25 rats in each group). In the experimental (E) group, the rats were intra-peritoneally (IP) injected daily with a commercially available 4.25% dextrose solution. In the control puncture (CP) group, the peritoneum was punctured daily, but no PD solution infused. In an age-matched control (CC) group, no intervention was given. Two study protocols were used. Protocol A (duration 20 weeks) consisted of a daily IP injection of 10 mL PD solution per 100 g body weight. In protocol B, a double volume of PD solution was introduced (20 mL per 100 g body weight). At 9, 16, and 20 weeks in protocol A, and at 9 weeks in protocol B, urea, creatinine, microalbumin [(MAL) measured using specific anti-rat albumin monoclonal antibody], and AGEs (measured by fluorescent assay with excitation at 370 nm and emission at 440 nm) were measured in peritoneal effluent and serum.ResultsAt no time during the study were AGEs detected in serum from any group in either protocol. In both protocols, no differences were found between the control groups (CP, CC) with respect to all parameters. In protocol A, the dialysate-to-plasma ratio (D/P) of urea was significantly higher in the experimental group as compared with the control groups at 9, 16, and 20 weeks [9 weeks: 0.59 ± 0.03 (E) vs 0.39 ± 0.02 (CP) vs 0.46 ± 0.02 (CC), p < 0.0004 and p < 0.002, respectively; 16 weeks: 0.71 ± 0.08 (E) vs 0.42 ± 0.01 (CP) vs 0.46 ± 0.01 (CC), p < 0.0001 and p < 0.02, respectively; 20 weeks: 0.57 ± 0.03 (E) vs 0.39 ± 0.01 (CP) vs 0.41 ± 0.02 (CC), p < 0.002 and p < 0.004, respectively]. At 16 and 20 weeks, dialysate MAL levels were significantly increased in group E [16 weeks: 354.00 ± 80.35 μg/mL (E) vs 134.75 ± 14.36 μg/mL (CP) vs 110.69 ± 7.83 μg/mL (CC), p < 0.04 and p < 0.03, respectively; 20 weeks: 283.17 ± 14.71 μg/mL (E) vs 105.14 ± 12.11 μg/mL (CP) vs 135.50 ± 19.03 μg/mL (CC), p < 0.00001 and p < 0.0001, respectively]. In protocol B, at completion of the study (week 9), D/P urea, effluent MAL, and AGEs were significantly higher in the experimental group as compared with the control groups [D/P: 0.67 ± 0.04 (E) vs 0.46 ± 0.07 (CP) vs 0.41 ± 0.02 (CC), p < 0.0002 and p < 00001, respectively; MAL: 336.8 ± 63.30 μg/mL (E) vs 125.71 ± 16.77 μg/mL (CP) vs 119.00 ± 39.75 μg/mL (CC), p < 0.008 and p < 0.007, respectively; AGEs: 265.77 ± 33.49 U/mg creatinine (E) vs 163.10 ± 21.99 U/mg creatinine (CP) vs 83.17 ± 22.66 U/mg creatinine (CC), p < 0.02 and p < 0.001, respectively]. Peritoneal effluent AGEs were found to be significantly correlated with D/P urea and dialysate MAL ( r = 0.42, p < 0.04, and r = 0.7, p = 0.00001, respectively).ConclusionsIn situ generation of AGEs constitutes the chief origin of peritoneal AGEs. Advanced glycation end-products affect peritoneal permselectivity for both small and large solutes. The rat model of simulated peritoneal dialysis developed in this experiment provides a reliable method for studying peritoneal AGE formation and effect on peritoneal transfer of small solutes and macro-molecules.
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Affiliation(s)
- Ella Zeltzer
- Department of Nephrology and Department of Biochemistry, Meir Hospital, Kfar–Saba and the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Osnat Klein
- Department of Nephrology and Department of Biochemistry, Meir Hospital, Kfar–Saba and the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gloria Rashid
- Department of Nephrology and Department of Biochemistry, Meir Hospital, Kfar–Saba and the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Dov Katz
- Department of Nephrology and Department of Biochemistry, Meir Hospital, Kfar–Saba and the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ze'ev Korzets
- Department of Nephrology and Department of Biochemistry, Meir Hospital, Kfar–Saba and the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jacques Bernheim
- Department of Nephrology and Department of Biochemistry, Meir Hospital, Kfar–Saba and the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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26
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Dobbie JW. Advanced Glycosylation End Products in Peritoneal Tissue with Different Solutions. Perit Dial Int 2020. [DOI: 10.1177/089686089701702s05] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- James W. Dobbie
- Mesothelial and Peritoneal Research Centre, Lister Research Laboratories, University Department of Surgery, Edinburgh Royal Infirmary, Edinburgh, Scotland
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27
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Pretini V, Koenen MH, Kaestner L, Fens MHAM, Schiffelers RM, Bartels M, Van Wijk R. Red Blood Cells: Chasing Interactions. Front Physiol 2019; 10:945. [PMID: 31417415 PMCID: PMC6684843 DOI: 10.3389/fphys.2019.00945] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 07/09/2019] [Indexed: 12/13/2022] Open
Abstract
Human red blood cells (RBC) are highly differentiated cells that have lost all organelles and most intracellular machineries during their maturation process. RBC are fundamental for the nearly all basic physiologic dynamics and they are key cells in the body's respiratory system by being responsible for the oxygen transport to all cells and tissues, and delivery of carbon dioxide to the lungs. With their flexible structure RBC are capable to deform in order to travel through all blood vessels including very small capillaries. Throughout their in average 120 days lifespan, human RBC travel in the bloodstream and come in contact with a broad range of different cell types. In fact, RBC are able to interact and communicate with endothelial cells (ECs), platelets, macrophages, and bacteria. Additionally, they are involved in the maintenance of thrombosis and hemostasis and play an important role in the immune response against pathogens. To clarify the mechanisms of interaction of RBC and these other cells both in health and disease as well as to highlight the role of important key players, we focused our interest on RBC membrane components such as ion channels, proteins, and phospholipids.
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Affiliation(s)
- Virginia Pretini
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
| | - Mischa H. Koenen
- Department of Laboratory of Translational Immunology and Department of Pediatric Immunology, Wilhelmina Children’s Hospital, University Medical Centre Utrecht, Utrecht, Netherlands
| | - Lars Kaestner
- Theoretical Medicine and Biosciences, Saarland University, Homburg, Germany
- Experimental Physics, Saarland University, Saarbrücken, Germany
| | - Marcel H. A. M. Fens
- Department of Pharmaceutics, Utrecht Institute of Pharmaceutical Sciences (UIPS), Faculty of Science, Utrecht University, Utrecht, Netherlands
| | - Raymond M. Schiffelers
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Marije Bartels
- Paediatric Haematology Department, Wilhelmina Children’s Hospital, University Medical Centre Utrecht, Utrecht, Netherlands
| | - Richard Van Wijk
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
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28
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Eichhorst A, Daniel C, Rzepka R, Sehnert B, Nimmerjahn F, Voll RE, Chevalier N. Relevance of Receptor for Advanced Glycation end Products (RAGE) in Murine Antibody-Mediated Autoimmune Diseases. Int J Mol Sci 2019; 20:ijms20133234. [PMID: 31266174 PMCID: PMC6651235 DOI: 10.3390/ijms20133234] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 06/25/2019] [Accepted: 06/26/2019] [Indexed: 12/24/2022] Open
Abstract
It is incompletely understood how self-antigens become targets of humoral immunity in antibody-mediated autoimmune diseases. In this context, alarmins are discussed as an important level of regulation. Alarmins are recognized by various receptors, such as receptor for advanced glycation end products (RAGE). As RAGE is upregulated under inflammatory conditions, strongly binds nucleic acids and mediates pro-inflammatory responses upon alarmin recognition, our aim was to examine its contribution to immune complex-mediated autoimmune diseases. This question was addressed employing RAGE−/− animals in murine models of pristane-induced lupus, collagen-induced, and serum-transfer arthritis. Autoantibodies were assessed by enzyme-linked immunosorbent assay, renal disease by quantification of proteinuria and histology, arthritis by scoring joint inflammation. The associated immune status was determined by flow cytometry. In both disease entities, we detected tendentiously decreased autoantibody levels in RAGE−/− mice, however no differences in clinical outcome. In accordance with autoantibody levels, a subgroup of the RAGE−/− animals showed a decrease in plasma cells, and germinal center B cells and an increase in follicular B cells. Based on our results, we suggest that RAGE deficiency alone does not significantly affect antibody-mediated autoimmunity. RAGE may rather exert its effects along with other receptors linking environmental factors to auto-reactive immune responses.
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Affiliation(s)
- Alexandra Eichhorst
- Department of Rheumatology and Clinical Immunology, Medical Centre-University of Freiburg, Faculty of Medicine, 79106 Freiburg, Baden-Wuerttemberg, Germany
| | - Christoph Daniel
- Department of Nephropathology, Friedrich-Alexander University (FAU) of Erlangen-Nuremberg, 91054 Erlangen, Bavaria, Germany
| | - Rita Rzepka
- Department of Rheumatology and Clinical Immunology, Medical Centre-University of Freiburg, Faculty of Medicine, 79106 Freiburg, Baden-Wuerttemberg, Germany
| | - Bettina Sehnert
- Department of Rheumatology and Clinical Immunology, Medical Centre-University of Freiburg, Faculty of Medicine, 79106 Freiburg, Baden-Wuerttemberg, Germany
| | - Falk Nimmerjahn
- Department of Biology, Friedrich-Alexander University (FAU) of Erlangen-Nuremberg, 91058 Erlangen, Bavaria, Germany
| | - Reinhard E Voll
- Department of Rheumatology and Clinical Immunology, Medical Centre-University of Freiburg, Faculty of Medicine, 79106 Freiburg, Baden-Wuerttemberg, Germany
| | - Nina Chevalier
- Department of Rheumatology and Clinical Immunology, Medical Centre-University of Freiburg, Faculty of Medicine, 79106 Freiburg, Baden-Wuerttemberg, Germany.
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29
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Riuzzi F, Sorci G, Sagheddu R, Chiappalupi S, Salvadori L, Donato R. RAGE in the pathophysiology of skeletal muscle. J Cachexia Sarcopenia Muscle 2018; 9:1213-1234. [PMID: 30334619 PMCID: PMC6351676 DOI: 10.1002/jcsm.12350] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 07/20/2018] [Accepted: 08/24/2018] [Indexed: 12/14/2022] Open
Abstract
Emerging evidence suggests that the signalling of the Receptor for Advanced Glycation End products (RAGE) is critical for skeletal muscle physiology controlling both the activity of muscle precursors during skeletal muscle development and the correct time of muscle regeneration after acute injury. On the other hand, the aberrant re-expression/activity of RAGE in adult skeletal muscle is a hallmark of muscle wasting that occurs in response to ageing, genetic disorders, inflammatory conditions, cancer, and metabolic alterations. In this review, we discuss the mechanisms of action and the ligands of RAGE involved in myoblast differentiation, muscle regeneration, and muscle pathological conditions. We highlight potential therapeutic strategies for targeting RAGE to improve skeletal muscle function.
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Affiliation(s)
- Francesca Riuzzi
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology
| | - Guglielmo Sorci
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology
| | - Roberta Sagheddu
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology
| | - Sara Chiappalupi
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology
| | - Laura Salvadori
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology
| | - Rosario Donato
- Department of Experimental Medicine, University of Perugia, Perugia, Italy.,Interuniversity Institute of Myology.,Centro Universitario di Ricerca sulla Genomica Funzionale, University of Perugia, Perugia, Italy
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Chaudhuri J, Bains Y, Guha S, Kahn A, Hall D, Bose N, Gugliucci A, Kapahi P. The Role of Advanced Glycation End Products in Aging and Metabolic Diseases: Bridging Association and Causality. Cell Metab 2018; 28:337-352. [PMID: 30184484 PMCID: PMC6355252 DOI: 10.1016/j.cmet.2018.08.014] [Citation(s) in RCA: 396] [Impact Index Per Article: 56.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Accumulation of advanced glycation end products (AGEs) on nucleotides, lipids, and peptides/proteins are an inevitable component of the aging process in all eukaryotic organisms, including humans. To date, a substantial body of evidence shows that AGEs and their functionally compromised adducts are linked to and perhaps responsible for changes seen during aging and for the development of many age-related morbidities. However, much remains to be learned about the biology of AGE formation, causal nature of these associations, and whether new interventions might be developed that will prevent or reduce the negative impact of AGEs-related damage. To facilitate achieving these latter ends, we show how invertebrate models, notably Drosophila melanogaster and Caenorhabditis elegans, can be used to explore AGE-related pathways in depth and to identify and assess drugs that will mitigate against the detrimental effects of AGE-adduct development.
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Affiliation(s)
- Jyotiska Chaudhuri
- The Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA.
| | - Yasmin Bains
- Touro University College of Osteopathic Medicine, Glycation Oxidation and Research laboratory, Vallejo, CA, 94592, USA
| | - Sanjib Guha
- The Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA
| | - Arnold Kahn
- The Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA; University of California, Department of Urology, 400 Parnassus Avenue, San Francisco, CA 94143, USA
| | - David Hall
- The Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA
| | - Neelanjan Bose
- The Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA; University of California, Department of Urology, 400 Parnassus Avenue, San Francisco, CA 94143, USA
| | - Alejandro Gugliucci
- Touro University College of Osteopathic Medicine, Glycation Oxidation and Research laboratory, Vallejo, CA, 94592, USA.
| | - Pankaj Kapahi
- The Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA 94945, USA; University of California, Department of Urology, 400 Parnassus Avenue, San Francisco, CA 94143, USA.
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Diaz D, Fonseca V, Aude YW, Lamas GA. Chelation therapy to prevent diabetes-associated cardiovascular events. Curr Opin Endocrinol Diabetes Obes 2018; 25:258-266. [PMID: 29846236 PMCID: PMC6058685 DOI: 10.1097/med.0000000000000419] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE OF REVIEW For over 60 years, chelation therapy with disodium ethylene diamine tetraacetic acid (EDTA, edetate) had been used for the treatment of cardiovascular disease (CVD) despite lack of scientific evidence for efficacy and safety. The Trial to Assess Chelation Therapy (TACT) was developed and received funding from the National Institutes of Health (NIH) to ascertain the safety and efficacy of chelation therapy in patients with CVD. RECENT FINDINGS This pivotal trial demonstrated an improvement in outcomes in postmyocardial infarction (MI) patients. Interestingly, it also showed a particularly large reduction in CVD events and all-cause mortality in the prespecified subgroup of patients with diabetes. The TACT results may support the concept of metal chelation to reduce metal-catalyzed oxidation reactions that promote the formation of advanced glycation end products, a precursor of diabetic atherosclerosis. SUMMARY In this review, we summarize the epidemiological and basic evidence linking toxic metal accumulation and diabetes-related CVD, supported by the salutary effects of chelation in TACT. If the ongoing NIH-funded TACT2, in diabetic post-MI patients, proves positive, this unique therapy will enter the armamentarium of endocrinologists and cardiologists seeking to reduce the atherosclerotic risk of their diabetic patients.
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Affiliation(s)
- Denisse Diaz
- Columbia University Division of Cardiology at Mount Sinai Medical Center, Miami Beach FL
| | - Vivian Fonseca
- Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana
| | - Yamil W. Aude
- University of Texas Rio Grande Valley Doctors Hospital at Renaissance, Edinburg, Texas, USA
| | - Gervasio A. Lamas
- Columbia University Division of Cardiology at Mount Sinai Medical Center, Miami Beach FL
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Rojas A, Añazco C, González I, Araya P. Extracellular matrix glycation and receptor for advanced glycation end-products activation: a missing piece in the puzzle of the association between diabetes and cancer. Carcinogenesis 2018; 39:515-521. [PMID: 29373651 DOI: 10.1093/carcin/bgy012] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 01/22/2018] [Indexed: 02/07/2023] Open
Abstract
A growing body of epidemiologic evidence suggests that people with diabetes are at a significantly higher risk of many forms of cancer. However, the molecular mechanisms underlying this association are not fully understood. Cancer cells are surrounded by a complex milieu, also known as tumor microenvironment, which contributes to the development and metastasis of tumors. Of note, one of the major components of this niche is the extracellular matrix (ECM), which becomes highly disorganized during neoplastic progression, thereby stimulating cancer cell transformation, growth and spread. One of the consequences of chronic hyperglycemia, the most frequently observed sign of diabetes and the etiological source of diabetes complications, is the irreversible glycation and oxidation of proteins and lipids leading to the formation of the advanced glycation end-products (AGEs). These compounds may covalently crosslink and biochemically modify structure and functions of many proteins, and AGEs accumulation is particularly high in long-living proteins with low biological turnover, features that are shared by most, if not all, ECM proteins. AGEs-modified proteins are recognized by AGE-binding proteins, and thus glycated ECM components have the potential to trigger Receptor for advanced glycation end-products-dependent mechanisms. The biological consequence of receptor for advanced glycation end-products activation mechanisms seems to be connected, in different ways, to drive some hallmarks of cancer onset and tumor growth. The present review intends to highlight the potential impact of ECM glycation on tumor progression by triggering receptor for advanced glycation end-products-mediated mechanisms.
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Affiliation(s)
- Armando Rojas
- Biomedical Research Laboratories, Preclinical Sciences Department, Medicine Faculty, Catholic University of Maule, Talca, Chile
| | - Carolina Añazco
- Biomedical Research Laboratories, Preclinical Sciences Department, Medicine Faculty, Catholic University of Maule, Talca, Chile
| | - Ileana González
- Biomedical Research Laboratories, Preclinical Sciences Department, Medicine Faculty, Catholic University of Maule, Talca, Chile
| | - Paulina Araya
- Biomedical Research Laboratories, Preclinical Sciences Department, Medicine Faculty, Catholic University of Maule, Talca, Chile
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Abstract
Summary
Diabetes mellitus is one of the most common chronic diseases which continue to increase in number and significance. It presents the third most prevalent condition among medically compromised patients referring for dental treatment. Diabetes mellitus has been defined as a group of metabolic diseases characterized by hyperglycemia resulting from defects in insulin secretion, insulin action, or both. Hyperglycemia leads to widespread multisystem damage which has an effect on oral tissue. The present article summarizes current knowledge regarding the association between diabetes mellitus and oral and dental health.
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The Role of Free Radicals in Autophagy Regulation: Implications for Ageing. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:2450748. [PMID: 29682156 PMCID: PMC5846360 DOI: 10.1155/2018/2450748] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 01/05/2018] [Accepted: 01/16/2018] [Indexed: 12/19/2022]
Abstract
Reactive oxygen and nitrogen species (ROS and RNS, resp.) have been traditionally perceived solely as detrimental, leading to oxidative damage of biological macromolecules and organelles, cellular demise, and ageing. However, recent data suggest that ROS/RNS also plays an integral role in intracellular signalling and redox homeostasis (redoxtasis), which are necessary for the maintenance of cellular functions. There is a complex relationship between cellular ROS/RNS content and autophagy, which represents one of the major quality control systems in the cell. In this review, we focus on redox signalling and autophagy regulation with a special interest on ageing-associated changes. In the last section, we describe the role of autophagy and redox signalling in the context of Alzheimer's disease as an example of a prevalent age-related disorder.
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Peyron I, Dimitrov JD, Delignat S, Gangadharan B, Srivastava A, Kaveri SV, Lacroix-Desmazes S. Oxidation of factor VIII increases its immunogenicity in mice with severe hemophilia A. Cell Immunol 2018; 325:64-68. [PMID: 29395036 DOI: 10.1016/j.cellimm.2018.01.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 12/30/2017] [Accepted: 01/13/2018] [Indexed: 02/04/2023]
Abstract
The development of antibodies against therapeutic factor VIII (FVIII) represents the major complication of replacement therapy in patients with severe hemophilia A. Amongst the environmental risk factors that influence the anti-FVIII immune response, the presence of active bleeding or hemarthrosis has been evoked. Endothelium damage is typically associated with the release of oxidative compounds. Here, we addressed whether oxidation contributes to FVIII immunogenicity. The control with N-acetyl cysteine of the oxidative status in FVIII-deficient mice, a model of severe hemophilia A, reduced the immune response to exogenous FVIII. Ex vivo exposure of therapeutic FVIII to HOCl induced a mild oxidation of the molecule as evidenced by the loss of free amines and resulted in increased FVIII immunogenicity in vivo when compared to native FVIII. The increased immunogenicity of oxidized FVIII was not reverted by treatment of mice with N-acetyl cysteine, and did not implicate an increased maturation of professional antigen-presenting cells. Our data document that oxidation influences the immunogenicity of therapeutic FVIII.
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Affiliation(s)
- Ivan Peyron
- INSERM, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France; Université Pierre et Marie Curie-Paris6, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France; Université Paris Descartes, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France
| | - Jordan D Dimitrov
- INSERM, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France; Université Pierre et Marie Curie-Paris6, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France; Université Paris Descartes, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France
| | - Sandrine Delignat
- INSERM, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France; Université Pierre et Marie Curie-Paris6, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France; Université Paris Descartes, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France
| | - Bagirath Gangadharan
- INSERM, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France; Université Pierre et Marie Curie-Paris6, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France; Université Paris Descartes, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France
| | - Alok Srivastava
- Department of Haematology, Christian Medical College, Vellore, India
| | - Srinivas V Kaveri
- INSERM, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France; Université Pierre et Marie Curie-Paris6, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France; Université Paris Descartes, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France
| | - Sébastien Lacroix-Desmazes
- INSERM, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France; Université Pierre et Marie Curie-Paris6, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France; Université Paris Descartes, UMR S 1138, Centre de recherche des Cordeliers, Paris F-75006, France.
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Polverino F, Celli BR, Owen CA. COPD as an endothelial disorder: endothelial injury linking lesions in the lungs and other organs? (2017 Grover Conference Series). Pulm Circ 2018; 8:2045894018758528. [PMID: 29468936 PMCID: PMC5826015 DOI: 10.1177/2045894018758528] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 01/21/2018] [Indexed: 12/27/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is characterized by chronic expiratory airflow obstruction that is not fully reversible. COPD patients develop varying degrees of emphysema, small and large airway disease, and various co-morbidities. It has not been clear whether these co-morbidities share common underlying pathogenic processes with the pulmonary lesions. Early research into the pathogenesis of COPD focused on the contributions of injury to the extracellular matrix and pulmonary epithelial cells. More recently, cigarette smoke-induced endothelial dysfunction/injury have been linked to the pulmonary lesions in COPD (especially emphysema) and systemic co-morbidities including atherosclerosis, pulmonary hypertension, and chronic renal injury. Herein, we review the evidence linking endothelial injury to COPD, and the pathways underlying endothelial injury and the "vascular COPD phenotype" including: (1) direct toxic effects of cigarette smoke on endothelial cells; (2) generation of auto-antibodies directed against endothelial cells; (3) vascular inflammation; (4) increased oxidative stress levels in vessels inducing increases in lipid peroxidation and increased activation of the receptor for advanced glycation end-products (RAGE); (5) reduced activation of the anti-oxidant pathways in endothelial cells; (6) increased endothelial cell release of mediators with vasoconstrictor, pro-inflammatory, and remodeling activities (endothelin-1) and reduced endothelial cell expression of mediators that promote vasodilation and homeostasis of endothelial cells (nitric oxide synthase and prostacyclin); and (7) increased endoplasmic reticular stress and the unfolded protein response in endothelial cells. We also review the literature on studies of drugs that inhibit RAGE signaling in other diseases (angiotensin-converting enzyme inhibitors and angiotensin receptor blockers), or vasodilators developed for idiopathic pulmonary arterial hypertension that have been tested on cell culture systems, animal models of COPD, and/or smokers and COPD patients.
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Affiliation(s)
- Francesca Polverino
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Bartolome R. Celli
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Caroline A. Owen
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
- Lovelace Respiratory Research Institute, Albuquerque, NM, USA
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Zhang W, Randell EW, Sun G, Likhodii S, Liu M, Furey A, Zhai G. Hyperglycemia-related advanced glycation end-products is associated with the altered phosphatidylcholine metabolism in osteoarthritis patients with diabetes. PLoS One 2017; 12:e0184105. [PMID: 28898260 PMCID: PMC5595284 DOI: 10.1371/journal.pone.0184105] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 08/17/2017] [Indexed: 02/04/2023] Open
Abstract
To test whether type 2 diabetic patients have an elevated level of advanced glycation end-products (AGEs) and responsible for altered phosphatidylcholine metabolism, which we recently found to be associated with osteoarthritis (OA) and diabetes mellitus (DM), synovial fluid (SF) and plasma samples were collected from OA patients with and without DM. Hyperglycemia-related AGEs including methylglyoxal (MG), free methylglyoxal-derived hydroimidazolone (MG-H1), and protein bound N-(Carboxymethyl)lysine (CML) and N-(Carboxyethyl)lysine (CEL) levels were measured in both SF and plasma samples using liquid chromatography coupled tandem mass spectrometry methodology. The correlation between these AGEs and phosphatidylcholine acyl-alkyl C34:3 (PC ae C34:3) and C36:3 (PC ae C36:3) were examined. Eighty four patients with knee OA, including 46 with DM and 38 without DM, were included in the study. There was no significant difference in plasma levels of MG, MG-H1, CML, and CEL between OA patients with and without DM. However, the levels of MG and MG-H1, but not CML and CEL in SF were significantly higher in OA patients with DM than in those without (all p ≤0.04). This association strengthened after adjustment for age, body mass index (BMI), sex and hexose level (p<0.02). Moreover, the levels of MG-H1 in SF was negatively and significantly correlated with PC ae C34:3 (ρ = -0.34; p = 0.02) and PC ae C36:3 (ρ = -0.39; P = 0.03) after the adjustment of age, BMI, sex and hexose level. Our data indicated that the production of non-protein bound AGEs was increased within the OA-affected joint of DM patients. This is associated with changes in phosphatidylcholine metabolism and might be responsible for the observed epidemiological association between OA and DM.
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Affiliation(s)
- Weidong Zhang
- Discipline of Genetics, Faculty of Medicine, Memorial University of Newfoundland, St John’s, Newfoundland and Labrador, Canada
- School of Pharmaceutical Sciences, Jilin University, Changchun, P.R. China
| | - Edward W. Randell
- Department of Laboratory Medicine, Faculty of Medicine, Memorial University of Newfoundland, St John’s, Newfoundland and Labrador, Canada
| | - Guang Sun
- Discipline of Medicine, Faculty of Medicine, Memorial University of Newfoundland, St John’s, Newfoundland and Labrador, Canada
| | - Sergei Likhodii
- Department of Laboratory Medicine, Faculty of Medicine, Memorial University of Newfoundland, St John’s, Newfoundland and Labrador, Canada
| | - Ming Liu
- Discipline of Genetics, Faculty of Medicine, Memorial University of Newfoundland, St John’s, Newfoundland and Labrador, Canada
| | - Andrew Furey
- Department of Surgery, Faculty of Medicine, Memorial University of Newfoundland, St John’s, Newfoundland and Labrador, Canada
| | - Guangju Zhai
- Discipline of Genetics, Faculty of Medicine, Memorial University of Newfoundland, St John’s, Newfoundland and Labrador, Canada
- Menzies Research Institute, University of Tasmania, Hobart, Tasmania, Australia
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Polverino F, Laucho-Contreras ME, Petersen H, Bijol V, Sholl LM, Choi ME, Divo M, Pinto-Plata V, Chetta A, Tesfaigzi Y, Celli BR, Owen CA. A Pilot Study Linking Endothelial Injury in Lungs and Kidneys in Chronic Obstructive Pulmonary Disease. Am J Respir Crit Care Med 2017; 195:1464-1476. [PMID: 28085500 DOI: 10.1164/rccm.201609-1765oc] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
RATIONALE Patients with chronic obstructive pulmonary disease (COPD) frequently have albuminuria (indicative of renal endothelial cell injury) associated with hypoxemia. OBJECTIVES To determine whether (1) cigarette smoke (CS)-induced pulmonary and renal endothelial cell injury explains the association between albuminuria and COPD, (2) CS-induced albuminuria is linked to increases in the oxidative stress-advanced glycation end products (AGEs) receptor for AGEs (RAGE) pathway, and (3) enalapril (which has antioxidant properties) limits the progression of pulmonary and renal injury by reducing activation of the AGEs-RAGE pathway in endothelial cells in both organs. METHODS In 26 patients with COPD, 24 ever-smokers without COPD, 32 nonsmokers who underwent a renal biopsy or nephrectomy, and in CS-exposed mice, we assessed pathologic and ultrastructural renal lesions, and measured urinary albumin/creatinine ratios, tissue oxidative stress levels, and AGEs and RAGE levels in pulmonary and renal endothelial cells. The efficacy of enalapril on pulmonary and renal lesions was assessed in CS-exposed mice. MEASUREMENTS AND MAIN RESULTS Patients with COPD and/or CS-exposed mice had chronic renal injury, increased urinary albumin/creatinine ratios, and increased tissue oxidative stress and AGEs-RAGE levels in pulmonary and renal endothelial cells. Treating mice with enalapril attenuated CS-induced increases in urinary albumin/creatinine ratios, tissue oxidative stress levels, endothelial cell AGEs and RAGE levels, pulmonary and renal cell apoptosis, and the progression of chronic renal and pulmonary lesions. CONCLUSIONS Patients with COPD and/or CS-exposed mice have pulmonary and renal endothelial cell injury linked to increased endothelial cell AGEs and RAGE levels. Albuminuria could identify patients with COPD in whom angiotensin-converting enzyme inhibitor therapy improves renal and lung function by reducing endothelial injury.
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Affiliation(s)
- Francesca Polverino
- 1 Pulmonary Division and.,2 Lovelace Respiratory Research Institute, Albuquerque, New Mexico.,3 University of Parma, Parma, Italy
| | | | - Hans Petersen
- 2 Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Vanesa Bijol
- 5 Pathology Department, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Lynette M Sholl
- 5 Pathology Department, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Mary E Choi
- 6 Nephrology Division, Weill Cornell Medical College, New York, New York
| | - Miguel Divo
- 1 Pulmonary Division and.,2 Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Victor Pinto-Plata
- 1 Pulmonary Division and.,2 Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | | | | | - Bartolomé R Celli
- 1 Pulmonary Division and.,2 Lovelace Respiratory Research Institute, Albuquerque, New Mexico
| | - Caroline A Owen
- 1 Pulmonary Division and.,2 Lovelace Respiratory Research Institute, Albuquerque, New Mexico
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Wei JY, Liu CC, Ouyang HD, Ma C, Xie MX, Liu M, Lei WL, Ding HH, Wu SL, Xin WJ. Activation of RAGE/STAT3 pathway by methylglyoxal contributes to spinal central sensitization and persistent pain induced by bortezomib. Exp Neurol 2017; 296:74-82. [PMID: 28729113 DOI: 10.1016/j.expneurol.2017.07.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 06/14/2017] [Accepted: 07/17/2017] [Indexed: 12/20/2022]
Abstract
Bortezomib is a first-line chemotherapeutic drug widely used for multiple myeloma and other nonsolid malignancies. Although bortezomib-induced persistent pain is easily diagnosed in clinic, the pathogenic mechanism remains unclear. Here, we studied this issue with use of a rat model of systemic intraperitoneal administration of bortezomib for consecutive 5days. Consisted with our previous study, we found that bortezomib treatment markedly induced mechanical allodynia in rats. Furthermore, we first found that bortezomib treatment significantly induced the upregulation of methylglyoxal in spinal dorsal horn of rats. Spinal local application of methylglyoxal also induced mechanical allodynia and central sensitization in normal rats. Moreover, administration of bortezomib upregulated the expression of receptors for advanced glycation end products (RAGE) and phosphorylated STAT3 (p-STAT3) in dorsal horn. Importantly, intrathecal injection of metformin, a known scavenger of methylglyoxal, significantly attenuated the upregulation of methylglyoxal and RAGE in dorsal horn, central sensitization and mechanical allodynia induced by bortezomib treatment, and blockage of RAGE also prevented the upregulation of p-STAT3, central sensitization and mechanical allodynia induced by bortezomib treatment. In addition, inhibition of STAT3 activity by S3I-201 attenuated bortezomib-induced mechanical allodynia and central sensitization. Local knockdown of STAT3 also ameliorated the mechanical allodynia induced by bortezomib administration. Our results suggest that accumulation of methylglyoxal may activate the RAGE/STAT3 signaling pathway in dorsal horn, and contributes to the spinal central sensitization and persistent pain induced by bortezomib treatment.
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Affiliation(s)
- Jia-You Wei
- Zhongshan School of Medicine, Guangdong Province Key Laboratory of Brain Function and Disease, Faculty of Forensic Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Cui-Cui Liu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Rehabilitation Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Han-Dong Ouyang
- Department of Anesthesiology, Cancer Center, Sun Yat-sen University, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, 510060, China
| | - Chao Ma
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Rehabilitation Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Man-Xiu Xie
- Zhongshan School of Medicine, Guangdong Province Key Laboratory of Brain Function and Disease, Faculty of Forensic Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Meng Liu
- Zhongshan School of Medicine, Guangdong Province Key Laboratory of Brain Function and Disease, Faculty of Forensic Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Wan-Long Lei
- Zhongshan School of Medicine, Guangdong Province Key Laboratory of Brain Function and Disease, Faculty of Forensic Medicine, Sun Yat-sen University, Guangzhou 510080, China.
| | - Huan-Huan Ding
- Zhongshan School of Medicine, Guangdong Province Key Laboratory of Brain Function and Disease, Faculty of Forensic Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Shao-Ling Wu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Rehabilitation Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | - Wen-Jun Xin
- Zhongshan School of Medicine, Guangdong Province Key Laboratory of Brain Function and Disease, Faculty of Forensic Medicine, Sun Yat-sen University, Guangzhou 510080, China.
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Advanced glycation endproducts form during ovalbumin digestion in the presence of fructose: Inhibition by chlorogenic acid. Fitoterapia 2017; 120:1-5. [PMID: 28527897 DOI: 10.1016/j.fitote.2017.05.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 05/11/2017] [Accepted: 05/16/2017] [Indexed: 01/12/2023]
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41
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de la Hoz CL, Cheng C, Fernyhough P, Zochodne DW. A model of chronic diabetic polyneuropathy: benefits from intranasal insulin are modified by sex and RAGE deletion. Am J Physiol Endocrinol Metab 2017; 312:E407-E419. [PMID: 28223295 PMCID: PMC5451527 DOI: 10.1152/ajpendo.00444.2016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 02/06/2017] [Accepted: 02/18/2017] [Indexed: 01/11/2023]
Abstract
Human diabetic polyneuropathy (DPN) is a progressive complication of chronic diabetes mellitus. Preliminary evidence has suggested that intranasal insulin, in doses insufficient to alter hyperglycemia, suppresses the development of DPN. In this work we confirm this finding, but demonstrate that its impact is modified by sex and deletion of RAGE, the receptor for advanced glycosylation end products. We serially evaluated experimental DPN in male and female wild-type mice and male RAGE null (RN) mice, each with nondiabetic controls, during 16 wk of diabetes, the final 8 wk including groups given intranasal insulin. Age-matched nondiabetic female mice had higher motor and sensory conduction velocities than their male counterparts and had lesser conduction slowing from chronic diabetes. Intranasal insulin improved slowing in both sexes. In male RN mice, there was less conduction slowing with chronic diabetes, and intranasal insulin provided limited benefits. Rotarod testing and hindpaw grip power offered less consistent impacts. Mechanical sensitivity and thermal sensitivity were respectively but disparately changed and improved with insulin in wild-type female and male mice but not RN male mice. These studies confirm that intranasal insulin improves indexes of experimental DPN but indicates that females with DPN may differ in their underlying phenotype. RN mice had partial but incomplete protection from underlying DPN and lesser impacts from insulin. We also identify an important role for sex in the development of DPN and report evidence that insulin and AGE-RAGE pathways in its pathogenesis may overlap.
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Affiliation(s)
- Cristiane L de la Hoz
- Department of Clinical Neurosciences, the Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada; and
| | - Chu Cheng
- Department of Clinical Neurosciences, the Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada; and
| | - Paul Fernyhough
- Division of Neurodegenerative Disorders, St Boniface Hospital Research Centre and Department of Pharmacology and Therapeutics, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Douglas W Zochodne
- Division of Neurology, Department of Medicine, Neuroscience and Mental Health Institute, Alberta Diabetes Institute, University of Alberta, Alberta, Canada;
- Department of Clinical Neurosciences, the Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada; and
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Zheng H, Wu J, Jin Z, Yan LJ. Potential Biochemical Mechanisms of Lung Injury in Diabetes. Aging Dis 2017; 8:7-16. [PMID: 28203478 PMCID: PMC5287388 DOI: 10.14336/ad.2016.0627] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 06/27/2016] [Indexed: 12/17/2022] Open
Abstract
Accumulating evidence has shown that the lung is one of the target organs for microangiopathy in patients with either type 1 or type 2 diabetes mellitus (DM). Diabetes is associated with physiological and structural abnormalities in the diabetic lung concurrent with attenuated lung function. Despite intensive investigations in recent years, the pathogenic mechanisms of diabetic lung injury remain largely elusive. In this review, we summarize currently postulated mechanisms of diabetic lung injury. We mainly focus on the pathogenesis of diabetic lung injury that implicates key pathways, including oxidative stress, non-enzymatic protein glycosylation, polyol pathway, NF-κB pathway, and protein kinase c pathway. We also highlight that while numerous studies have mainly focused on tissue or cell damage in the lung, studies focusing on mitochondrial dysfunction in the diabetic lung have remained sketchy. Hence, further understanding of mitochondrial mechanisms of diabetic lung injury should provide invaluable insights into future therapeutic approaches for diabetic lung injury.
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Affiliation(s)
- Hong Zheng
- 1Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA; 2Department of Basic Theory of Traditional Chinese Medicine, College of Basic Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, 250355, China
| | - Jinzi Wu
- 1Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Zhen Jin
- 1Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Liang-Jun Yan
- 1Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
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Rojas A, Añazco C, Araya P. M2 macrophages do not fly into a "RAGE". Inflamm Res 2017; 66:13-15. [PMID: 27699448 DOI: 10.1007/s00011-016-0994-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 09/22/2016] [Accepted: 09/23/2016] [Indexed: 02/07/2023] Open
Abstract
Tumor-associated macrophages (TAMs) are key elements in orchestrating host responses inside tumor stroma. This population may undergo a polarized activation process, thus rendering a heterogeneous spectrum of phenotypes, where the classically activated type 1 macrophages (M1) and the alternative activated type 2 macrophages (M2) represent two extreme phenotypes. In this commentary, based on very recent research findings, we intend to highlight how complex could be the crosstalk among all components of tumor stroma, where the coexistence of non-natural partners may even skew the canonical responses that we can expect.
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Affiliation(s)
- Armando Rojas
- Biomedical Research Laboratories, Medicine Faculty, Catholic University of Maule, 3605 San Miguel Ave., Talca, Chile.
| | - Carolina Añazco
- Biomedical Research Laboratories, Medicine Faculty, Catholic University of Maule, 3605 San Miguel Ave., Talca, Chile
| | - Paulina Araya
- Biomedical Research Laboratories, Medicine Faculty, Catholic University of Maule, 3605 San Miguel Ave., Talca, Chile
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Abstract
C1q, historically viewed as the initiating component of the classical complement pathway, also exhibits a variety of complement-independent activities in both innate and acquired immunity. Recent studies focusing on C1q's suppressive role in the immune system have provided new insight into how abnormal C1q expression and bioactivity may contribute to autoimmunity. In particular, molecular networks involving C1q interactions with cell surface receptors and other ligands are emerging as mechanisms involved in C1q's modulation of immunity. Here, we discuss the role of C1q in controlling immune cell function, including recently elucidated mechanisms of action, and suggest how these processes are critical for maintaining tissue homeostasis under steady-state conditions and in preventing autoimmunity.
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Affiliation(s)
- Myoungsun Son
- Center for Autoimmune and Musculoskeletal Diseases, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA
| | - Betty Diamond
- Center for Autoimmune and Musculoskeletal Diseases, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA.
| | - Frances Santiago-Schwarz
- Center for Autoimmune and Musculoskeletal Diseases, The Feinstein Institute for Medical Research, 350 Community Drive, Manhasset, NY, 11030, USA
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Pinkas A, Aschner M. Advanced Glycation End-Products and Their Receptors: Related Pathologies, Recent Therapeutic Strategies, and a Potential Model for Future Neurodegeneration Studies. Chem Res Toxicol 2016; 29:707-14. [PMID: 27054356 DOI: 10.1021/acs.chemrestox.6b00034] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Advanced glycation end products (AGEs) are the result of a nonenzymatic reaction between sugars and proteins, lipids, or nucleic acids. AGEs are both consumed and endogenously formed; their accumulation is accelerated under hyperglycemic and oxidative stress conditions, and they are associated with the onset and complication of many diseases, such as cardiovascular diseases, diabetes, and Alzheimer's disease. AGEs exert their deleterious effects by either accumulating in the circulation and tissues or by receptor-mediated signal transduction. Several receptors bind AGEs: some are specific and contribute to clearance of AGEs, whereas others, like the RAGE receptor, are nonspecific, associated with inflammation and oxidative stress, and considered to be mediators of the aforementioned AGE-related diseases. Although several anti-AGE compounds have been studied, understanding the underlying mechanisms of RAGE and targeting it as a therapeutic strategy is becoming increasingly desirable. For achieving these goals efficiently and expeditiously, the C. elegans model has been suggested. This model is already used for studying several human diseases and, by expressing RAGE, could also be used to study RAGE-related pathways and pathologies to facilitate the development of novel therapeutic strategies.
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Affiliation(s)
- Adi Pinkas
- Albert Einstein College of Medicine , Jack and Pearl Resnick Campus, 1300 Morris Park Avenue, Forchheimer Building, Room 209, Bronx, New York 10461, United States
| | - Michael Aschner
- Albert Einstein College of Medicine , Jack and Pearl Resnick Campus, 1300 Morris Park Avenue, Forchheimer Building, Room 209, Bronx, New York 10461, United States
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A prospective study of soluble receptor for advanced glycation end-products and colorectal cancer risk in postmenopausal women. Cancer Epidemiol 2016; 42:115-23. [PMID: 27100837 DOI: 10.1016/j.canep.2016.04.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 04/02/2016] [Accepted: 04/06/2016] [Indexed: 01/06/2023]
Abstract
OBJECTIVES Receptor for advanced glycation end products (RAGE) expressed on adipocytes and immune cells can bind to ligand N(ε)-(carboxymethyl)-lysine (CML) and trigger dysregulation of adipokines and chronic inflammation. Soluble RAGE (sRAGE) mitigates the detrimental effect of RAGE. We examined the associations between circulating levels of CML-AGE and sRAGE and colorectal cancer (CRC). METHODS In a case-cohort study of the Women's Health Initiative Study, blood levels of CML-AGE and sRAGE were measured using ELISA. We used multivariable Cox regression model to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) of incident CRC in relation to quartiles (Q) of biomarker levels. RESULTS Average follow-up was 7.8 years for 444 cases and 805 subcohort members. In the subcohort, CML-AGE and sRAGE were inversely correlated with BMI (P values<0.0001). Levels of CML-AGE and sRAGE were not associated with CRC. In BMI-specific analysis, the association between sRAGE and CRC was observed. Among women with BMI≥25kg/m(2), those with highest levels of sRAGE had significantly lower risk for CRC as compared to women with lowest levels of sRAGE (HRQ4versusQ1: 0.39; 95% CI: 0.17-0.91). This inverse association was not observed among women with BMI <25kg/m(2) (P value for interaction=0.01). CONCLUSIONS Among postmenopausal women, the RAGE pathway may be involved in obesity-related CRC.
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Belmokhtar K, Robert T, Ortillon J, Braconnier A, Vuiblet V, Boulagnon-Rombi C, Diebold MD, Pietrement C, Schmidt AM, Rieu P, Touré F. Signaling of Serum Amyloid A Through Receptor for Advanced Glycation End Products as a Possible Mechanism for Uremia-Related Atherosclerosis. Arterioscler Thromb Vasc Biol 2016; 36:800-9. [PMID: 26988587 DOI: 10.1161/atvbaha.115.306349] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 02/29/2016] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Cardiovascular disease is the leading cause of death in patients with end-stage renal disease. Serum amyloid A (SAA) is an acute phase protein and a binding partner for the multiligand receptor for advanced glycation end products (RAGE). We investigated the role of the interaction between SAA and RAGE in uremia-related atherogenesis. APPROACH AND RESULTS We used a mouse model of uremic vasculopathy, induced by 5 of 6 nephrectomy in the Apoe(-/-) background. Sham-operated mice were used as controls. Primary cultures of Ager(+/+) and Ager(-/-) vascular smooth muscle cells (VSMCs) were stimulated with recombinant SAA, S100B, or vehicle alone. Relevance to human disease was assessed with human VSMCs. The surface area of atherosclerotic lesions at the aortic roots was larger in uremic Apoe(-/-) than in sham-operated Apoe(-/-) mice (P<0.001). Furthermore, atherosclerotic lesions displayed intense immunostaining for RAGE and SAA, with a pattern similar to that of α-SMA. Ager transcript levels in the aorta were 6× higher in uremic animals than in controls (P<0.0001). Serum SAA concentrations were higher in uremic mice, not only after 4 weeks of uremia but also at 8 and 12 weeks of uremia, than in sham-operated animals. We investigated the functional role of RAGE in uremia-induced atherosclerosis further, in animals lacking RAGE. We found that the induction of uremia in Apoe(-/-) Ager(-/-) mice did not accelerate atherosclerosis. In vitro, the stimulation of Ager(+/+) but not of Ager(-/-) VSMCs with SAA or S100B significantly induced the production of reactive oxygen species, the phosphorylation of AKT and mitogen-activated protein kinase-extracellular signal-regulated kinases and cell migration. Reactive oxygen species inhibition with N-acetyl cysteine significantly inhibited both the phosphorylation of AKT and the migration of VSMCs. Similar results were obtained for human VSMCs, except that the phosphorylation of mitogen-activated protein kinase-extracellular signal-regulated kinases, rather than of AKT, was subject to specific redox-regulation by SAA and S100B. Furthermore, human aortic atherosclerotic sections were positively stained for RAGE and SAA. CONCLUSIONS Uremia upregulates SAA and RAGE expression in the aortic wall and in atherosclerotic lesions in mice. Ager(-/-) animals are protected against the uremia-induced acceleration of atherosclerosis. SAA modulates the functions of murine and human VSMCs in vitro in a RAGE-dependent manner. This study, therefore, identifies SAA as a potential new uremic toxin involved in uremia-related atherosclerosis through interaction with RAGE.
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Affiliation(s)
- Karim Belmokhtar
- From the UFR Medecine, Laboratoire de néphrologie, Faculté de Médecine, Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France (K.B., T.R., J.O., V.V., M.D.D., C.P., P.R., F.T.); Division of Nephrology (T.R., A.B., V.V., P.R., F.T.), Division of Anatomopathology (C.B.-R., M.D.D.), and Division of Pediatrics (C.P.), CHU Reims, Reims, France; and Diabetes Research Program, New York University, New York (A.M.S.)
| | - Thomas Robert
- From the UFR Medecine, Laboratoire de néphrologie, Faculté de Médecine, Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France (K.B., T.R., J.O., V.V., M.D.D., C.P., P.R., F.T.); Division of Nephrology (T.R., A.B., V.V., P.R., F.T.), Division of Anatomopathology (C.B.-R., M.D.D.), and Division of Pediatrics (C.P.), CHU Reims, Reims, France; and Diabetes Research Program, New York University, New York (A.M.S.)
| | - Jeremy Ortillon
- From the UFR Medecine, Laboratoire de néphrologie, Faculté de Médecine, Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France (K.B., T.R., J.O., V.V., M.D.D., C.P., P.R., F.T.); Division of Nephrology (T.R., A.B., V.V., P.R., F.T.), Division of Anatomopathology (C.B.-R., M.D.D.), and Division of Pediatrics (C.P.), CHU Reims, Reims, France; and Diabetes Research Program, New York University, New York (A.M.S.)
| | - Antoine Braconnier
- From the UFR Medecine, Laboratoire de néphrologie, Faculté de Médecine, Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France (K.B., T.R., J.O., V.V., M.D.D., C.P., P.R., F.T.); Division of Nephrology (T.R., A.B., V.V., P.R., F.T.), Division of Anatomopathology (C.B.-R., M.D.D.), and Division of Pediatrics (C.P.), CHU Reims, Reims, France; and Diabetes Research Program, New York University, New York (A.M.S.)
| | - Vincent Vuiblet
- From the UFR Medecine, Laboratoire de néphrologie, Faculté de Médecine, Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France (K.B., T.R., J.O., V.V., M.D.D., C.P., P.R., F.T.); Division of Nephrology (T.R., A.B., V.V., P.R., F.T.), Division of Anatomopathology (C.B.-R., M.D.D.), and Division of Pediatrics (C.P.), CHU Reims, Reims, France; and Diabetes Research Program, New York University, New York (A.M.S.)
| | - Camille Boulagnon-Rombi
- From the UFR Medecine, Laboratoire de néphrologie, Faculté de Médecine, Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France (K.B., T.R., J.O., V.V., M.D.D., C.P., P.R., F.T.); Division of Nephrology (T.R., A.B., V.V., P.R., F.T.), Division of Anatomopathology (C.B.-R., M.D.D.), and Division of Pediatrics (C.P.), CHU Reims, Reims, France; and Diabetes Research Program, New York University, New York (A.M.S.)
| | - Marie Danièle Diebold
- From the UFR Medecine, Laboratoire de néphrologie, Faculté de Médecine, Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France (K.B., T.R., J.O., V.V., M.D.D., C.P., P.R., F.T.); Division of Nephrology (T.R., A.B., V.V., P.R., F.T.), Division of Anatomopathology (C.B.-R., M.D.D.), and Division of Pediatrics (C.P.), CHU Reims, Reims, France; and Diabetes Research Program, New York University, New York (A.M.S.)
| | - Christine Pietrement
- From the UFR Medecine, Laboratoire de néphrologie, Faculté de Médecine, Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France (K.B., T.R., J.O., V.V., M.D.D., C.P., P.R., F.T.); Division of Nephrology (T.R., A.B., V.V., P.R., F.T.), Division of Anatomopathology (C.B.-R., M.D.D.), and Division of Pediatrics (C.P.), CHU Reims, Reims, France; and Diabetes Research Program, New York University, New York (A.M.S.)
| | - Ann Marie Schmidt
- From the UFR Medecine, Laboratoire de néphrologie, Faculté de Médecine, Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France (K.B., T.R., J.O., V.V., M.D.D., C.P., P.R., F.T.); Division of Nephrology (T.R., A.B., V.V., P.R., F.T.), Division of Anatomopathology (C.B.-R., M.D.D.), and Division of Pediatrics (C.P.), CHU Reims, Reims, France; and Diabetes Research Program, New York University, New York (A.M.S.)
| | - Philippe Rieu
- From the UFR Medecine, Laboratoire de néphrologie, Faculté de Médecine, Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France (K.B., T.R., J.O., V.V., M.D.D., C.P., P.R., F.T.); Division of Nephrology (T.R., A.B., V.V., P.R., F.T.), Division of Anatomopathology (C.B.-R., M.D.D.), and Division of Pediatrics (C.P.), CHU Reims, Reims, France; and Diabetes Research Program, New York University, New York (A.M.S.)
| | - Fatouma Touré
- From the UFR Medecine, Laboratoire de néphrologie, Faculté de Médecine, Université de Reims Champagne-Ardenne, CNRS UMR 7369 (Matrice Extracellulaire et Dynamique Cellulaire, MEDyC), Reims, France (K.B., T.R., J.O., V.V., M.D.D., C.P., P.R., F.T.); Division of Nephrology (T.R., A.B., V.V., P.R., F.T.), Division of Anatomopathology (C.B.-R., M.D.D.), and Division of Pediatrics (C.P.), CHU Reims, Reims, France; and Diabetes Research Program, New York University, New York (A.M.S.).
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Adams JN, Raffield LM, Martelle SE, Freedman BI, Langefeld CD, Carr JJ, Cox AJ, Bowden DW. Genetic analysis of advanced glycation end products in the DHS MIND study. Gene 2016; 584:173-9. [PMID: 26915486 DOI: 10.1016/j.gene.2016.02.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 01/21/2016] [Accepted: 02/19/2016] [Indexed: 11/24/2022]
Abstract
Advanced glycation end-products (AGEs) are a diverse group of molecules produced by the non-enzymatic addition of glucose to proteins, lipids, and nucleic acids. AGE levels have been associated with hyperglycemia and diabetic complications, especially in animal models, but less clearly in human studies. We measured total serum AGEs using an enzyme linked immunosorbant assay (ELISA) in 506 subjects from 246 families in the Diabetes Heart Study (DHS)/DHS MIND Study (n=399 type 2 diabetes (T2D)-affected). Single nucleotide polymorphisms (SNPs) in several candidate genes, including known AGE receptors, were tested for their influence on circulating AGE levels. The genetic analysis was expanded to include an exploratory genome-wide association study (GWAS) and exome chip analysis of AGEs (≈440,000 SNPs). AGEs were found to be highly heritable (h(2)=0.628, p=8.96 × 10(-10)). While no SNPs from candidate genes were significantly associated after Bonferroni correction, rs1035798 in the gene AGER was the most significantly associated (p=0.007). Additionally, rs7198427, in MT1A, showed a nominally significant p-value (p=0.0099). No SNPs from the GWAS or exome studies were identified after correction for multiple comparisons; however, rs17054480 in the PALLD2 gene on chromosome 4 showed the strongest association (p=7.77 × 10(-7)). Five SNPs at two loci (ISCA2/NPC2 and FBXO33) had p-values of less than 2.0 × 10(-5) and three additional SNPs (rs716326 in MACROD2, and rs6795197 and rs6765857 in ZBTB38) showed a nominal association with p-values of less than 1.0 × 10(-5).These findings provide a foundation for further investigation into the genetic component of circulating AGEs.
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Affiliation(s)
- Jeremy N Adams
- Program in Molecular Genetics and Genomics, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
| | - Laura M Raffield
- Program in Molecular Genetics and Genomics, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
| | - Susan E Martelle
- Integrative Physiology and Pharmacology, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
| | - Barry I Freedman
- Department of Internal Medicine - Nephrology, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
| | - Carl D Langefeld
- Division of Public Health Sciences, Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
| | - J Jeffrey Carr
- Department of Radiologic Sciences, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
| | - Amanda J Cox
- Molecular Basis of Disease, Griffith University, Southport, QLD, Australia
| | - Donald W Bowden
- Center for Genomics and Personalized Medicine Research, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA; Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA.
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Gupta N, Gupta ND, Garg S, Goyal L, Gupta A, Khan S, Moin S. The effect of type 2 diabetes mellitus and smoking on periodontal parameters and salivary matrix metalloproteinase-8 levels. J Oral Sci 2016; 58:1-6. [DOI: 10.2334/josnusd.58.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Namita Gupta
- Department of Periodontics, Dr. Ziauddin Ahmad Dental College, Aligarh Muslim University
| | - Narinder D. Gupta
- Department of Periodontics, Dr. Ziauddin Ahmad Dental College, Aligarh Muslim University
| | - Sagar Garg
- Department of Periodontics, Tamil Nadu Government Dental College
| | - Lata Goyal
- Department of Periodontics, Dr. Ziauddin Ahmad Dental College, Aligarh Muslim University
| | - Akash Gupta
- Department of Biochemistry, Subharti Medical College
| | - Saif Khan
- Department of Periodontics, Dr. Ziauddin Ahmad Dental College, Aligarh Muslim University
| | - Shagufta Moin
- Department of Biochemistry, Jawaharlal Nehru Medical College, Aligarh Muslim University
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50
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Gupta N, Gupta ND, Gupta A, Goyal L, Garg S. The influence of type 2 diabetes mellitus on salivary matrix metalloproteinase-8 levels and periodontal parameters: A study in an Indian population. Eur J Dent 2015; 9:319-323. [PMID: 26430357 PMCID: PMC4569980 DOI: 10.4103/1305-7456.163222] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE Although many studies reported more severe periodontal disease and the existing proinflammatory conditions in patients with diabetes but only few have examined the effect of type 2 diabetes mellitus (DM) on salivary matrix metalloproteinase-8 (MMP-8) level and other periodontal parameters. This study aims to evaluate the effect of type 2 DM on salivary MMP-8 levels and periodontal parameters, which might be useful in monitoring periodontal disease in diabetes. MATERIALS AND METHODS A total of 90 subjects were selected for the study and were divided into three groups: Group I included 30 healthy subjects; Group II included 30 subjects without type 2 DM but with chronic periodontitis, and Group III included 30 subjects with type 2 DM and chronic periodontitis. Periodontal parameters such as plaque index (PI), gingival index (GI), pocket probing depth (PPD), and clinical attachment level (CAL) were taken. The salivary MMP-8 level was estimated by Quantikine Human total MMP-8 immunoassay kit using ELISA method. RESULTS The mean value of the salivary MMP-8 of Group III was highest followed by Group II and Group I, the least. The other periodontal parameters PI, GI, PPD, CAL, was comparatively highest for Group III. CONCLUSION This study suggests that diabetes is associated with an increased prevalence, extent, and severity of periodontitis. Furthermore, the increased levels of MMP-8 indicate the influence of diabetes on their salivary concentration.
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Affiliation(s)
- Namita Gupta
- Department of Periodontics and Community Dentistry, Dr. Z. A. Dental College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Narinder Dev Gupta
- Department of Periodontics and Community Dentistry, Dr. Z. A. Dental College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Akash Gupta
- Department of Biochemistry, Subharti Medical College, Meerut, Uttar Pradesh, India
| | - Lata Goyal
- Department of Periodontics and Community Dentistry, Dr. Z. A. Dental College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Sagar Garg
- Department of Periodontics, Tamil Nadu Government Medical College, Chennai, Tamil Nadu, India
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