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Raupbach J, Müller SK, Schnell V, Friedrich S, Hellwig A, Grune T, Henle T. The Effect of Free and Protein-Bound Maillard Reaction Products N-ε-Carboxymethyllysine, N-ε-Fructosyllysine, and Pyrraline on Nrf2 and NFκB in HCT 116 Cells. Mol Nutr Food Res 2023; 67:e2300137. [PMID: 37465844 DOI: 10.1002/mnfr.202300137] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 07/03/2023] [Indexed: 07/20/2023]
Abstract
SCOPE Maillard reaction products (MRPs) are believed to interact with the receptor for advanced glycation endproducts (RAGE) and lead to a pro-inflammatory cellular response. The structural basis for this interaction is scarcely understood. This study investigates the effect of individual lysine modifications in free form or bound to casein on human colon cancer cells. METHODS AND RESULTS Selectively glycated casein containing either protein-bound N-ε-carboxymethyllysine (CML), N-ε-fructosyllysine (FL), or pyrraline is prepared and up to 94%, 97%, and 61% of lysine modification could be attributed to CML, FL, or pyrraline, respectively. HCT 116 cells are treated with free CML, pyrraline, FL, or modified casein for 24 h. Native casein is used as control. Intracellular MRP content is analyzed by UPLC-MS/MS. Microscopic analysis of the transcription factors shows no activation of NFκB by free or protein-bound FL or CML, whereas casein containing protein-bound pyrraline activates Nrf2. RAGE expression is not influenced by free or casein-bound MRPs. Activation of Nrf2 by pyrraline-modified casein is confirmed by analyzing Nrf2 target proteins NAD(P)H dehydrogenase (quinone 1) (NQO1) and heme oxygenase-1 (HO-1). CONCLUSION Studies on the biological effects of glycated proteins require an individual consideration of defined structures. General statements on the effect of "AGEs" in biological systems are scientifically unsound.
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Affiliation(s)
- Jana Raupbach
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558, Nuthetal, Germany
- Institute of Nutritional Science, University of Potsdam, 14558, Nuthetal, Germany
| | - Stephan K Müller
- Chair of Food Chemistry, Technische, Universität Dresden, 01062, Dresden, Germany
| | - Vanessa Schnell
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558, Nuthetal, Germany
| | - Suse Friedrich
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558, Nuthetal, Germany
- Institute of Nutritional Science, University of Potsdam, 14558, Nuthetal, Germany
| | - Anne Hellwig
- Chair of Food Chemistry, Technische, Universität Dresden, 01062, Dresden, Germany
| | - Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558, Nuthetal, Germany
- Institute of Nutritional Science, University of Potsdam, 14558, Nuthetal, Germany
| | - Thomas Henle
- Chair of Food Chemistry, Technische, Universität Dresden, 01062, Dresden, Germany
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2
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Kim Y. Blood and Tissue Advanced Glycation End Products as Determinants of Cardiometabolic Disorders Focusing on Human Studies. Nutrients 2023; 15:nu15082002. [PMID: 37111220 PMCID: PMC10144557 DOI: 10.3390/nu15082002] [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: 04/04/2023] [Revised: 04/18/2023] [Accepted: 04/20/2023] [Indexed: 04/29/2023] Open
Abstract
Cardiometabolic disorders are characterised by a cluster of interactive risk determinants such as increases in blood glucose, lipids and body weight, as well as elevated inflammation and oxidative stress and gut microbiome changes. These disorders are associated with onset of type 2 diabetes mellitus (T2DM) and cardiovascular disease (CVD). T2DM is strongly associated with CVD. Dietary advanced glycation end products (dAGEs) attributable from modern diets high in sugar and/or fat, highly processed foods and high heat-treated foods can contribute to metabolic etiologies of cardiometabolic disorders. This mini review aims to determine whether blood dAGEs levels and tissue dAGEs levels are determinants of the prevalence of cardiometabolic disorders through recent human studies. ELISA (enzyme-linked immunosorbent assay), high-performance liquid chromatography (HPLC), liquid chromatography-mass spectrometry (LC-MS) and gas chromatography-mass spectrometry (GC-MS) for blood dAGEs measurement and skin auto fluorescence (SAF) for skin AGEs measurement can be used. Recent human studies support that a diet high in AGEs can negatively influence glucose control, body weight, blood lipid levels and vascular health through the elevated oxidative stress, inflammation, blood pressure and endothelial dysfunction compared with a diet low in AGEs. Limited human studies suggested a diet high in AGEs could negatively alter gut microbiota. SAF could be considered as one of the predictors affecting risks for cardiometabolic disorders. More intervention studies are needed to determine how dAGEs are associated with the prevalence of cardiometabolic disorders through gut microbiota changes. Further human studies are conducted to find the association between CVD events, CVD mortality and total mortality through SAF measurement, and a consensus on whether tissue dAGEs act as a predictor of CVD is required.
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Affiliation(s)
- Yoona Kim
- Department of Food and Nutrition, Institute of Agriculture and Life Science, Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Gyeongsangnam-do, Republic of Korea
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3
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Chang YH, Huang CL, Hsieh AT, Jao CA, Lu HK. Expression of advanced glycation end products and receptors in gingival tissues of patients with noninsulin-dependent diabetes mellitus-associated periodontitis. J Dent Sci 2022; 18:689-695. [PMID: 37021230 PMCID: PMC10068389 DOI: 10.1016/j.jds.2022.10.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/17/2022] [Indexed: 12/14/2022] Open
Abstract
Background/purpose Advanced glycation end products (AGEs) are known to accumulate in the periodontal tissues of patients with diabetes mellitus (DM). Through this study, we aimed to investigate the distribution of AGEs and the receptor of AGEs (RAGE) in the gingival tissues of patients with chronic periodontitis with and without non-insulin-dependent diabetes mellitus (NIDDM). Materials and methods Gingival biopsy samples from 13 patients with both NIDDM and periodontitis and 6 patients with both non-DM (NDM) and periodontitis were collected. The tissue sections were processed using immunohistochemical (IHC) staining to detect the distributions of AGEs and RAGE. Spearman correlation coefficients of all samples were calculated (P < 0.05) for the AGE and RAGE rankings of the following clinical parameters: plaque score (PI), probing depth (PD), bleeding on probing (BOP), and tooth loss (TL). Results IHC analysis revealed that AGEs among patients with NIDDM had a significantly higher ranking than those of the NDM group (P < 0.05). Positive staining for RAGE was observed in both groups but was not significantly different (P > 0.05). A positive correlation between AGE ranking and TL was observed in the NIDDM group, but not between AGE ranking and PI, PD, or BOP. The distribution of RAGE was not correlated with PI, PD, BOP, or TL. Conclusion AGEs were particularly distributed in the highly inflamed gingiva of patients with NIDDM-associated periodontitis and was statistically correlated with the long-term parameter TL.
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Affiliation(s)
- Ya-Han Chang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Periodontics, Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chen-Ling Huang
- Division of Endocrinology & Metabolism, Department of Internal Medicine, Taipei Medical University Hospital, Taipei, Taiwan
| | - An-Tsz Hsieh
- Division of Endocrinology & Metabolism, Department of Internal Medicine, Taipei Medical University-Shuang Ho Hospital, New Taipei City, Taiwan
| | - Chia-Ai Jao
- Department of Dentistry, Lo-Hsu Medical Foundation, Lotung Poh-Ai Hospital, Yilan, Taiwan
| | - Hsein-Kun Lu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
- Division of Periodontics, Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan
- Corresponding author. Division of Periodontics, Department of Dentistry, Taipei Medical University Hospital, No. 252, Wuxing St, Xinyi District, Taipei City, 110301, Taiwan. Fax: +886 2 2737 2181#3211.
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4
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Li B, Yuan L, Liu P, Geng Z, Zhang K, Jiang H, Sui H, Zhang B. Moxibustion attenuates inflammation in intestinal mucosal by regulating RAGE-mediated TLR4-NF-κBp65 signaling pathway in vivo and in vitro. Am J Transl Res 2022; 14:4278-4294. [PMID: 35836884 PMCID: PMC9274590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
This study was performed to investigate the effect of moxibustion on the RAGE/TLR4-NF-κBp65 pathways and mucosal damage in rat model of 5-fluorouracil (5-Fu)-induced intestinal mucositis (IM) and the underlying mechanisms. 5-Fu treatment significantly increased the expression of the receptor for advanced glycation end products (RAGE) and its ligand, thehigh-mobility group box 1 protein (HMGB1), in the rat intestinal tissue. The inhibition of RAGE could induce the repair of intestinal mucosal damage and downregulate the expression of Toll-like receptor (TLR)-4 and nuclear factor kappa-B (NF-κB) p65 in intestinal tissues of 5-Fu-treated rats. Moxibustion treatment significantly improved the physical symptoms and repaired the intestinal mucosal damage of IM rats and increased the expression of tight junction proteins in these rats. The expression of RAGE, HMGB1, TLR4, NF-κBp65, and related downstream inflammatory factors, namely, tumor necrosis factor (TNF)-α, interleukin (IL)-6 and IL-1β, were significantly decreased after moxibustion treatment. A moxibustion dose of 15 min/day exerted a better therapeutic effect than a dose of 30 min/day. The phosphorylation of NF-κBp65 and IκBa is involved in reducing inflammation by regulating the RAGE signaling pathway. Moxibustion can reduce intestinal mucosal damage and inflammation in 5-Fu-induced IM rats via modulation of the RAGE/TLR4-NF-κBp65 signaling pathways.
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Affiliation(s)
- Bingrong Li
- Department of Acupuncture and Moxibustion, Shanghai General Hospital, Shanghai Jiao Tong University School of MedicineShanghai 200080, People’s Republic of China
- Shanghai Key Laboratory of Acupuncture Mechanism and Acupoint Function, Fudan UniversityShanghai 200433, People’s Republic of China
| | - Long Yuan
- Department of Acupuncture and Moxibustion, Shanghai General Hospital, Shanghai Jiao Tong University School of MedicineShanghai 200080, People’s Republic of China
| | - Peng Liu
- Department of Acupuncture and Moxibustion, Shanghai General Hospital, Shanghai Jiao Tong University School of MedicineShanghai 200080, People’s Republic of China
| | - Zixiang Geng
- Department of Acupuncture and Moxibustion, Shanghai General Hospital, Shanghai Jiao Tong University School of MedicineShanghai 200080, People’s Republic of China
| | - Kaiyong Zhang
- Department of Acupuncture and Moxibustion, Shanghai General Hospital, Shanghai Jiao Tong University School of MedicineShanghai 200080, People’s Republic of China
| | - Huiru Jiang
- Department of Acupuncture and Moxibustion, Shanghai General Hospital, Shanghai Jiao Tong University School of MedicineShanghai 200080, People’s Republic of China
| | - Hua Sui
- Medical Experiment Center, Jiading Branch of Shanghai General Hospital, Shanghai Jiao Tong University School of MedicineShanghai 201803, People’s Republic of China
| | - Bimeng Zhang
- Department of Acupuncture and Moxibustion, Shanghai General Hospital, Shanghai Jiao Tong University School of MedicineShanghai 200080, People’s Republic of China
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Chopra A, Jayasinghe TN, Eberhard J. Are Inflamed Periodontal Tissues Endogenous Source of Advanced Glycation End-Products (AGEs) in Individuals with and without Diabetes Mellitus? A Systematic Review. Biomolecules 2022; 12:biom12050642. [PMID: 35625570 PMCID: PMC9138899 DOI: 10.3390/biom12050642] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/14/2022] [Accepted: 04/27/2022] [Indexed: 12/14/2022] Open
Abstract
Advanced glycation end-products (AGEs) are heterogeneous compounds formed when excess sugars condense with the amino groups of nucleic acids and proteins. Increased AGEs are associated with insulin resistance and poor glycemic control. Recently, inflamed periodontal tissues and certain oral bacteria were observed to increase the local and systemic AGE levels in both normoglycemic and hyperglycemic individuals. Although hyperglycemia induced AGE and its effect on the periodontal tissues is known, periodontitis as an endogenous source of AGE formation is not well explored. Hence, this systematic review is aimed to explore, for the first time, whether inflamed periodontal tissues and periodontal pathogens have the capacity to modulate AGE levels in individuals with or without T2DM and how this affects the glycemic load. Six electronic databases were searched using the following keywords: (Periodontitis OR Periodontal disease OR Periodontal Inflammation) AND (Diabetes mellitus OR Hyperglycemia OR Insulin resistance) AND Advanced glycation end products. The results yielded 1140 articles, of which 13 articles were included for the review. The results showed that the mean AGE levels in gingival crevicular fluid was higher in individuals with diabetes mellitus and periodontitis (521.9 pg/mL) compared to healthy individuals with periodontitis (234.84 pg/mL). The serum AGE levels in normoglycemic subjects having periodontitis was higher compared to those without periodontitis (15.91 ng/mL vs. 6.60 ng/mL). Tannerella forsythia, a common gram-negative anaerobe periodontal pathogen in the oral biofilm, was observed to produce methylglyoxal (precursor of AGE) in the gingival tissues. Increased AGE deposition and activate of AGE receptors was noted in the presence of periodontitis in both normoglycemic and hyperglycemic individuals. Hence, it can be concluded that periodontitis can modulate the local and systemic levels of AGE levels even in absence of hyperglycemia. This explains the bidirectional relationship between periodontitis and development of prediabetes, incident diabetes, poor glycemic control, and insulin resistance.
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Affiliation(s)
- Aditi Chopra
- Department of Periodontology, Manipal College of Dental Sciences, Manipal Academy of Higher Education, Manipal 576104, India
- Correspondence:
| | - Thilini N. Jayasinghe
- The Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; (T.N.J.); (J.E.)
- School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
| | - Joerg Eberhard
- The Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; (T.N.J.); (J.E.)
- School of Dentistry, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
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6
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Plemmenos G, Piperi C. Pathogenic Molecular Mechanisms in Periodontitis and Peri-Implantitis: Role of Advanced Glycation End Products. Life (Basel) 2022; 12:life12020218. [PMID: 35207505 PMCID: PMC8874682 DOI: 10.3390/life12020218] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/19/2022] [Accepted: 01/28/2022] [Indexed: 12/17/2022] Open
Abstract
Advanced Glycation End Products (AGEs), the products of the non-enzymatic oxidation of proteins, nucleic acids, and lipids, are accumulated in periodontal tissues under hyperglycemic conditions such as Diabetes Mellitus (DM) and are responsible for sustained periodontal destruction. AGEs mediate their intracellular effects either directly or indirectly through receptor binding (via RAGE) in all types of periodontal ligament cells (osteocytes, gingival fibroblasts, stem cells, epithelial cells), indicating an important target for intervention. In combination with lipopolysaccharides (LPS) from Porphyromonas gingivalis (Pg), the negative impact of AGEs on periodontal tissue is further enhanced and accentuated. In addition, AGE accumulation is evident in peri-implantitis, yet through different underlying molecular mechanisms. Novel therapeutic approaches targeting the effects of AGEs in periodontal ligament cells show beneficial effects in pre-clinical studies. Herein, we provide evidence on the detrimental role of AGE accumulation in oral cavity tissues and their associated signaling pathways in periodontitis and peri-implantitis to further highlight the significance of oral or topical use of AGE blockers or inhibitors along with dental biofilms’ removal and DM regulation in patients’ management.
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Affiliation(s)
- Grigorios Plemmenos
- School of Dentistry, National and Kapodistrian University of Athens, Goudi, 11527 Athens, Greece; or
| | - Christina Piperi
- School of Dentistry, National and Kapodistrian University of Athens, Goudi, 11527 Athens, Greece; or
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Goudi, 11527 Athens, Greece
- Correspondence: ; Tel.: +30-2107462610
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7
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Ghosh S, Kapoor D, Vijayvergiya R, Sangwan S, Wangkheimayum S, Mehta S, Dhawan V. Correlation between soluble receptor for advanced glycation end products levels and coronary artery disease in postmenopausal nondiabetic women. World J Cardiol 2021; 13:130-143. [PMID: 34131476 PMCID: PMC8173337 DOI: 10.4330/wjc.v13.i5.130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/04/2021] [Accepted: 04/28/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The established cardiovascular risk factors cannot explain the overall risk of coronary artery disease (CAD), especially in women. Therefore, there is a growing need for the assessment of novel biomarkers to identify women at risk. The receptor for advanced glycation end products (RAGE) and its interaction with the advanced glycation end product (AGE) ligand have been associated with atherogenesis. The soluble fraction of RAGE (sRAGE) antagonizes RAGE signaling and exerts an antiatherogenic effect.
AIM The study aim was to explore the association between plasma levels of sRAGE and CAD in nondiabetic postmenopausal women.
METHODS This case-control study included 110 nondiabetic postmenopausal women who were enrolled in two groups. Group I included 55 angiographically proven CAD subjects with > 50% stenosis in at least one of the major coronary arteries and Group II included 55 healthy control women who did not have CAD or had < 50% stenosis of the coronary arteries. Stenosis was confirmed by invasive angiography. Plasma sRAGE was determined by an enzyme-linked immunosorbent assay.
RESULTS We observed significantly lower plasma sRAGE concentrations in subjects with CAD vs healthy controls (P < 0.05). Univariate and multivariate logistic regression analysis also revealed a significant correlation between plasma sRAGE levels and CAD (P = 0.01). Multivariate odds ratios for CAD revealed that subjects with sRAGE concentrations below 225 pg/mL (lowest quartile) had a 6-fold increase in CAD prevalence independent of other risk factors.
CONCLUSION Our findings indicated that low sRAGE levels were independently associated with CAD in nondiabetic postmenopausal women. Risk assessment of CAD in postmenopausal women can be improved by including sRAGE along with other risk factors.
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Affiliation(s)
- Soumitra Ghosh
- Department ofCardiology, PGIMER, Chandigarh 160012, India
| | - Divya Kapoor
- Department of Experimental Medicine and Biotechnology, PGIMER, Chandigarh 160012, India
| | | | - Sonal Sangwan
- Department of Experimental Medicine and Biotechnology, PGIMER, Chandigarh 160012, India
| | | | - Sakshi Mehta
- Department of Experimental Medicine and Biotechnology, PGIMER, Chandigarh 160012, India
| | - Veena Dhawan
- Department of Experimental Medicine and Biotechnology, PGIMER, Chandigarh 160012, India
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8
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Yan Z, Luo H, Xie B, Tian T, Li S, Chen Z, Liu J, Zhao X, Zhang L, Deng Y, Billiar TR, Jiang Y. Targeting adaptor protein SLP76 of RAGE as a therapeutic approach for lethal sepsis. Nat Commun 2021; 12:308. [PMID: 33436632 PMCID: PMC7804203 DOI: 10.1038/s41467-020-20577-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 12/07/2020] [Indexed: 01/29/2023] Open
Abstract
Accumulating evidence shows that RAGE has an important function in the pathogenesis of sepsis. However, the mechanisms by which RAGE transduces signals to downstream kinase cascades during septic shock are not clear. Here, we identify SLP76 as a binding partner for the cytosolic tail of RAGE both in vitro and in vivo and demonstrate that SLP76 binds RAGE through its sterile α motif (SAM) to mediate downstream signaling. Genetic deficiency of RAGE or SLP76 reduces AGE-induced phosphorylation of p38 MAPK, ERK1/2 and IKKα/β, as well as cytokine release. Delivery of the SAM domain into macrophages via the TAT cell-penetrating peptide blocks proinflammatory cytokine production. Furthermore, administration of TAT-SAM attenuates inflammatory cytokine release and tissue damage in mice subjected to cecal ligation and puncture (CLP) and protects these mice from the lethality of sepsis. These findings reveal an important function for SLP76 in RAGE-mediated pro-inflammatory signaling and shed light on the development of SLP76-targeted therapeutics for sepsis.
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Affiliation(s)
- Zhengzheng Yan
- Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15213, USA
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Haihua Luo
- Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Bingyao Xie
- Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Tian Tian
- Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Shan Li
- Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Zhixia Chen
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15213, USA
| | - Jinghua Liu
- Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Xuwen Zhao
- Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Liyong Zhang
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15213, USA
| | - Yongqiang Deng
- Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Timothy R Billiar
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15213, USA.
| | - Yong Jiang
- Guangdong Provincial Key Laboratory of Proteomics, State Key Laboratory of Organ Failure Research, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China.
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9
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Lai CH, Chou CC, Chuang HC, Lin GJ, Pan CH, Chen WL. Receptor for advanced glycation end products in relation to exposure to metal fumes and polycyclic aromatic hydrocarbon in shipyard welders. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 202:110920. [PMID: 32800255 DOI: 10.1016/j.ecoenv.2020.110920] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 06/16/2020] [Accepted: 06/17/2020] [Indexed: 06/11/2023]
Abstract
Advanced glycation end products (AGE) and the receptor for AGE (RAGE) have been found to be pivotal biomarkers to predict the risk of inflammation and oxidative stress. Limited evidence focuses on the influence of occupational exposure to polycyclic aromatic hydrocarbon (PAH) and metal fumes on AGE and RAGE in shipyard welders. Our aim was to determine the relationships among PAH, metal exposure, and inflammatory biomarkers. From September 1 to December 31, 2017, 53 welding workers (exposed group) and 29 office workers (control group) were enrolled in the study. Comprehensive workups included demographic characteristics, laboratory data, AGE, RAGE, Interleukin-6 (IL-6), tumor necrosis factor-α, PAH, and urinary metal concentrations. RAGE levels were measured by flow cytometric analysis. Urinary 1-hydroxypyrene (1-OHP) was used as a biomarker of exposure to PAH. Several metals were elevated in the personal fine particulate matter (PM2.5) samples, including Mn, Fe, V, Co, Zn, and Cu. The exposed group had significantly higher exposure to PM2.5 (p = 0.015), RAGE (p = 0.020), IL-6 (p = 0.008) than the control group. After adjusting for pertinent variables, there was still a significant and positive association between Ni level and AGE (β = 0.101; 95% CI, 0.031-0.172). Significant relationship between Cr and Cd levels and RAGE was observed (β = 0.173; 95% CI, 0.017-0.329; β = 0.084; 95% CI, 0.011-0.157, respectively). Participants with elevated 1-OHP level had higher odds of high RAGE level in the model 1 (OR = 3.466, 95% CI, 1.053-11.412) and model 2 (OR = 3.454, 95% CI, 1.034-11.536). The RAGE expression of participants was significantly associated with IL-6 levels in the fully adjusted model (β = 0.294; 95% CI, 0.083-0.732). Our findings highlighted that urinary metal levels and PAH were associated with increased AGE and RAGE formation in shipyard workers. Elevated serum RAGE might induce the production of proinflammatory cytokines and trigger ensuing inflammatory cascades.
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Affiliation(s)
- Ching-Huang Lai
- School of Public Health, National Defense Medical Center, Taipei, Taiwan
| | - Chia-Chi Chou
- School of Public Health, National Defense Medical Center, Taipei, Taiwan
| | - Hsiao-Chi Chuang
- School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Gu-Jiun Lin
- Department and Graduate Institute of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
| | - Chih-Hong Pan
- Institute of Labor, Occupational Safety and Health, Ministry of Labor, New Taipei City, Taiwan
| | - Wei-Liang Chen
- Division of Environmental Health & Occupational Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, And School of Medicine, National Defense Medical Center, Taipei, Taiwan; Division of Geriatric Medicine, Department of Family and Community Medicine, Tri-Service General Hospital, And School of Medicine, National Defense Medical Center, Taipei, Taiwan; Department of Biochemistry, National Defense Medical Center, Taiwan.
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10
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Kamer AR, Craig RG, Niederman R, Fortea J, de Leon MJ. Periodontal disease as a possible cause for Alzheimer's disease. Periodontol 2000 2020; 83:242-271. [PMID: 32385876 DOI: 10.1111/prd.12327] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 06/23/2019] [Indexed: 12/13/2022]
Abstract
Approximately 47 million people worldwide have been diagnosed with dementia, 60%-80% of whom have dementia of the Alzheimer's disease type. Unfortunately, there is no cure in sight. Defining modifiable risk factors for Alzheimer's disease may have a significant impact on its prevalence. An increasing body of evidence suggests that chronic inflammation and microbial dysbiosis are risk factors for Alzheimer's disease. Periodontal disease is a chronic inflammatory disease that develops in response to response to microbial dysbiosis. Many studies have shown an association between periodontal disease and Alzheimer's disease. The intent of this paper was to review the existing literature and determine, using the Bradford Hill criteria, whether periodontal disease is causally related to Alzheimer's disease.
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Affiliation(s)
- Angela R Kamer
- Department of Periodontology and Implant Dentistry, New York University, College of Dentistry, New York, New York, USA
| | - Ronald G Craig
- Department of Periodontology and Implant Dentistry, New York University, College of Dentistry, New York, New York, USA.,Department of Basic Sciences and Craniofacial Biology, New York University, College of Dentistry, New York, New York, USA
| | - Richard Niederman
- Department of Epidemiology and Health Promotion, New York University, College of Dentistry, New York, New York, USA
| | - Juan Fortea
- Alzheimer Down Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau- Biomedical Research Institute Sant Pau- Universitat Autònoma de Barcelona and Barcelona Down Medical Center, Fundació Catalana Síndrome de Down, Barcelona, Spain.,Alzheimer's Disease and Other Cognitive Disorders Unit, Neurology Service, Hospital Clínic, Barcelona, Spain
| | - Mony J de Leon
- Department of Radiology, Brain Health Imaging Institute, Weill Cornell Medicine, New York, New York, USA
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11
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Sakamoto E, Kido JI, Takagi R, Inagaki Y, Naruishi K, Nagata T, Yumoto H. Advanced glycation end-product 2 and Porphyromonas gingivalis lipopolysaccharide increase sclerostin expression in mouse osteocyte-like cells. Bone 2019; 122:22-30. [PMID: 30735798 DOI: 10.1016/j.bone.2019.02.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 01/23/2019] [Accepted: 02/04/2019] [Indexed: 02/06/2023]
Abstract
Sclerostin is a secreted glycoprotein that is mainly expressed in osteocytes, exerts negative effects on bone formation, and is present at elevated levels in diabetes mellitus (DM). Periodontitis is an infectious disease caused by periodontopathic bacteria, a complication of DM, and sometimes associated with severe inflammation and alveolar bone resorption. Advanced glycation end-products (AGEs) are a major pathogen in DM complications and adversely influence periodontitis in DM patients. In the present study, the effects of AGE2 and Porphyromonas gingivalis lipopolysaccharide (P-LPS) on the expression of sclerostin in mouse osteocyte-like cells (MLO-Y4-A2 cells) and its function in osteoblast differentiation were investigated. AGE2 and P-LPS up-regulated the expressions of receptor of AGE (RAGE) and Toll-like receptor 2 (TLR2), respectively, and significantly up-regulated that of sclerostin and interleukin 6 (IL-6) in osteocytes. Sclerostin, RAGE and TLR2 levels were synergistically increased by AGE2 and P-LPS. The siRNAs of RAGE and TLR2 significantly inhibited AGE2- and P-LPS-induced sclerostin expression. AGE2 up-regulated sclerostin expression in osteocyte-like cells via the RAGE, ERK and JNK, and NF-κB signal pathways. On the other hand, P-LPS elevated sclerostin levels via the TLR2, JNK and p38, and NF-κB signal pathways. When osteocytes pre-treated with AGE2 and P-LPS and osteoblastic cells (MC3T3-E1) were co-cultured in the medium with a sclerostin-neutralizing antibody, AGE2- and P-LPS-induced decreases in alkaline phosphatase activity and Runx2 expression in osteoblastic cells were significantly inhibited by the sclerostin-neutralizing antibody. These results suggest that AGE2 and P-LPS influence bone metabolism and inflammation through the regulation of sclerostin expression, and may aggravate periodontitis with DM.
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Affiliation(s)
- Eijiro Sakamoto
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Jun-Ichi Kido
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan.
| | - Ryosuke Takagi
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Yuji Inagaki
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Koji Naruishi
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Toshihiko Nagata
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Hiromichi Yumoto
- Department of Periodontology and Endodontology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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12
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Elenkova M, Tipton DA, Karydis A, Stein SH. Vitamin D attenuates human gingival fibroblast inflammatory cytokine production following advanced glycation end product interaction with receptors for AGE. J Periodontal Res 2018; 54:154-163. [PMID: 30295316 DOI: 10.1111/jre.12613] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 07/18/2018] [Accepted: 08/26/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND OBJECTIVES Vitamin D [1,25(OH)2 D3 or 1,25D3] is critical in musculoskeletal health, inflammation, immune response, and glucose metabolism. Patients with vitamin D deficiency may be at higher risk of diabetes and periodontitis. Diabetic patients exhibit exacerbated inflammation and more periodontal destruction. Advanced glycation end products (AGEs), formed during diabetic hyperglycemia, activate inflammatory pathways in periodontitis. Human gingival fibroblasts (HGFs) express receptors for AGEs (RAGEs) and can contribute to inflammation. OBJECTIVES Determine whether glycated human serum albumin (G-HSA) augments HGF IL-6 and IL-8 production, and whether treatment with 1,25D3 attenuates cytokine production following stimulation with G-HSA + IL-1β and/or IL-17. MATERIAL AND METHODS HGFs were incubated ±G-HSA or normal human serum albumin (HSA), ±IL-1β and/or IL-17, ±1,25D3. Cytokines were measured by ELISA. Neutralizing anti-RAGE was used to assess AGE-RAGE interaction. Endotoxin was measured using the ToxinSensor™ System. Data were expressed as mean ± standard deviation and analyzed using a one-way analysis of variance (ANOVA) and Scheffe's F procedure for post hoc comparisons. RESULTS G-HSA or IL-1β, but not HSA, significantly stimulated IL-6 and IL-8 production. G-HSA or HSA when combined with IL-1β or IL-1β + IL-17 synergistically stimulated IL-6 and IL-8. Neutralizing anti-RAGE inhibited IL-6 and IL-8 produced by cells stimulated with IL-1β + G-HSA but not (+HSA). Synergism caused by HSA did not appear to be mediated by endotoxin since its levels in G-HSA and HSA were not sufficient to stimulate fibroblasts. Vitamin D inhibited IL-6 and IL-8 production stimulated by G-HSA or HSA + IL-1β or IL-1β + IL-17. CONCLUSIONS Results suggest that the "perioprotective" effects of vitamin D are related to its ability to regulate inflammatory cytokine production by HGFs following AGE-RAGE interaction.
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Affiliation(s)
- Martina Elenkova
- College of Dentistry, The University of Tennessee Health Science Center, Memphis, Tennessee.,Department of Periodontology, The University of Tennessee Health Science Center, Memphis, Tennessee
| | - David A Tipton
- College of Dentistry, The University of Tennessee Health Science Center, Memphis, Tennessee.,Department of Bioscience Research, The University of Tennessee Health Science Center, Memphis, Tennessee
| | - Anastasios Karydis
- College of Dentistry, The University of Tennessee Health Science Center, Memphis, Tennessee.,Department of Periodontology, The University of Tennessee Health Science Center, Memphis, Tennessee
| | - Sidney H Stein
- College of Dentistry, The University of Tennessee Health Science Center, Memphis, Tennessee.,Department of Periodontology, The University of Tennessee Health Science Center, Memphis, Tennessee
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13
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Teodorowicz M, Hendriks WH, Wichers HJ, Savelkoul HFJ. Immunomodulation by Processed Animal Feed: The Role of Maillard Reaction Products and Advanced Glycation End-Products (AGEs). Front Immunol 2018; 9:2088. [PMID: 30271411 PMCID: PMC6146089 DOI: 10.3389/fimmu.2018.02088] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 08/24/2018] [Indexed: 12/23/2022] Open
Abstract
The immune system provides host protection to infection with pathogenic organisms, while at the same time providing tolerance upon exposure to harmless antigens. Thus, an impaired immune function is associated with increased susceptibility to infections with increased disease severity and thereby necessitating the therapeutic use of antibiotics. Livestock performance and feed efficiency, in addition to their health status, are dependent on the microbial load of their gut, the barrier function of the intestinal epithelium and the activity of the mucosal immune system, all of which can be modulated by dietary components. The majority of feeds that are consumed in pets and livestock have been processed. Processing promotes a non-enzymatic reaction between proteins and sugars called Maillard reaction (MR). Maillard reaction products (MRPs) and advanced Maillard reaction products (AGEs) determine taste, smell, and color of many food products therefore the MR is highly relevant for the feed industry. MRPs interact with different types of immune receptors, including the receptor for advanced glycation end products (RAGE) and immunomodulatory potential of feed proteins can be modified by Maillard reaction. This MR has become an important concern since MRPs/AGEs have been shown to contribute to increasing prevalence of diet-related chronic inflammatory states in the gut with negative health consequences and performance. The immunomodulatory effects of dietary MRPs and AGEs in livestock and pet animals are far less well-described, but widely considered to be similar to the relevant concepts and mechanisms obtained in the human field. This review will highlight immunological mechanisms underlying initiation of the innate and adaptive immune responses by MRPs/AGEs present in animal feeds, which are currently not completely understood. Bridging this knowledge gap, and taking advantage of progress in the human field, will significantly improve nutritional quality of feed and increase the prevention of diet-mediated inflammation in animals.
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Affiliation(s)
- Malgorzata Teodorowicz
- Cell Biology and Immunology Group, Department of Animal Sciences, Wageningen University & Research, Wageningen, Netherlands
| | - Wouter H. Hendriks
- Animal Nutrition Group, Department of Animal Sciences, Wageningen University & Research, Wageningen, Netherlands
- Department of Nutrition, Faculty of Veterinary Sciences, Utrecht University, Utrecht, Netherlands
| | - Harry J. Wichers
- Food and Biobased Research, Wageningen University & Research, Wageningen, Netherlands
| | - Huub F. J. Savelkoul
- Cell Biology and Immunology Group, Department of Animal Sciences, Wageningen University & Research, Wageningen, Netherlands
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14
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Chen C, Peng S, Chen F, Liu L, Li Z, Zeng G, Huang Q. Protective effects of pioglitazone on vascular endothelial cell dysfunction induced by high glucose via inhibition of IKKα/β–NFκB signaling mediated by PPARγ in vitro. Can J Physiol Pharmacol 2017; 95:1480-1487. [DOI: 10.1139/cjpp-2016-0574] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PIO, a synthetic ligand for PPARγ, is used clinically to treat T2DM. However, little is known about its protective effects on endothelium and the underlying mechanisms. In this study, we sought to investigate the protective effects of PIO on endothelium and its probable mechanisms: 95% confluent wild type (WT) HUVECs and PPARγLow-HUVECs that we first injured with HG (33 mmol·L–1) were first pretreated with 10 μmol·L–1 of GW9662 for 30 min, and then treated the cells with different concentrations of PIO (5, 10, or 20 μmol·L–1) for 24 h. Finally, we measured the levels of NO, ET1, TNFα, and IL6 in the cell culture supernatant. These cells were then used to determine cell viability, caspase3 activity, the levels of IKKα/β mRNA, IKKα/β, and NFκB-p65. Severe dysfunction and activation of IKKα/β–NFκB signaling occurred after we exposed HUVECs to HG. Conversely, treatment with PIO significantly attenuated the dysfunction and the activation of IKKα/β–NFκB signaling induced by HG in a dose-dependent manner. Moreover, the protective effects of PIO were completely abrogated by GW9662 or down-regulation of PPARγ. Taken together, the results indicate that PIO protects HUVECs against the HG-induced dysfunction through the inhibition of IKKα/β–NFκB signaling mediated by PPARγ.
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Affiliation(s)
- Chunxiang Chen
- Key Provincial Laboratory of Basic Pharmacology, Nanching University
- Department of Pharmacology, School of Pharmaceutical Science, Nanchang University, Nanchang 330006, Jiangxi Province, P.R. China
| | - Shaorong Peng
- Key Provincial Laboratory of Basic Pharmacology, Nanching University
- Department of Pharmacology, School of Pharmaceutical Science, Nanchang University, Nanchang 330006, Jiangxi Province, P.R. China
| | - Fanghui Chen
- Key Provincial Laboratory of Basic Pharmacology, Nanching University
- Department of Pharmacology, School of Pharmaceutical Science, Nanchang University, Nanchang 330006, Jiangxi Province, P.R. China
| | - Lili Liu
- Key Provincial Laboratory of Basic Pharmacology, Nanching University
- Department of Pharmacology, School of Pharmaceutical Science, Nanchang University, Nanchang 330006, Jiangxi Province, P.R. China
| | - Zhouxue Li
- Key Provincial Laboratory of Basic Pharmacology, Nanching University
- Department of Pharmacology, School of Pharmaceutical Science, Nanchang University, Nanchang 330006, Jiangxi Province, P.R. China
| | - Guohua Zeng
- Key Provincial Laboratory of Basic Pharmacology, Nanching University
- Department of Pharmacology, School of Pharmaceutical Science, Nanchang University, Nanchang 330006, Jiangxi Province, P.R. China
| | - Qiren Huang
- Key Provincial Laboratory of Basic Pharmacology, Nanching University
- Department of Pharmacology, School of Pharmaceutical Science, Nanchang University, Nanchang 330006, Jiangxi Province, P.R. China
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15
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Advanced glycation end-product (AGE)-albumin from activated macrophage is critical in human mesenchymal stem cells survival and post-ischemic reperfusion injury. Sci Rep 2017; 7:11593. [PMID: 28912521 PMCID: PMC5599509 DOI: 10.1038/s41598-017-11773-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 05/04/2017] [Indexed: 12/14/2022] Open
Abstract
Post-ischemic reperfusion injury (PIRI) triggers an intense inflammatory response which is essential for repair but is also implicated in pathogenesis of post-ischemic remodeling in several organs in human. Stem cell therapy has recently emerged as a promising method for treatment of PIRI in human. However, satisfactory results have not been reported due to severe loss of injected stem cells in PIRI including critical limb ischemia (CLI). For investigating the advanced glycation end-product-albumin (AGE-albumin) from activated macrophages is critical in both muscle cell and stem cell death, we evaluated the recovery of PIRI-CLI by injection of human bone marrow derived mesenchymal stem cells (hBD-MSCs) with or without soluble receptor for AGEs (sRAGE). Our results showed that activated M1 macrophages synthesize and secrete AGE-albumin, which induced the skeletal muscle cell death and injected hBD-MSCs in PIRI-CLI through RAGE increase. Combined injection of sRAGE and hBD-MSCs resulted in enhanced survival of hBD-MSCs and angiogenesis in PIRI-CLI mice. Taken together, AGE-albumin from activated macrophages is critical for both skeletal muscle cell and hBD-MSCs death in PIRI-CLI. Therefore, the inhibition of AGE-albumin from activated macrophages could be a successful therapeutic strategy for treatment of PIRI including CLI with or without stem cell therapy.
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16
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Brown BN, Haschak MJ, Lopresti ST, Stahl EC. Effects of age-related shifts in cellular function and local microenvironment upon the innate immune response to implants. Semin Immunol 2017; 29:24-32. [PMID: 28539184 DOI: 10.1016/j.smim.2017.05.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 04/18/2017] [Accepted: 05/11/2017] [Indexed: 12/14/2022]
Abstract
The host macrophage response is now well recognized as a predictor of the success or failure of biomaterial implants following placement. More specifically, shifts from an "M1" pro-inflammatory towards a more "M2-like" anti-inflammatory macrophage polarization profile have been shown to result in enhanced material integration and/or tissue regeneration downstream. As a result, a number of biomaterials-based approaches to controlling macrophage polarization have been developed. However, the ability to promote such activity is predicated upon an in-depth, context-dependent understanding of the host response to biomaterials. Recent work has shown the impacts of both tissue location and tissue status (i.e. underlying pathology) upon the host innate immune response to implants, representing a departure from a focus upon implant material composition and form. Thus, the ideas of "biocompatibility," the host macrophage reaction, and ideal material requirements and modification strategies may need to be revisited on a patient, tissue, and disease basis. Immunosenescence, dysregulation of macrophage function, and delayed resolution of immune responses in aged individuals have all been demonstrated, suggesting that the host response to biomaterials in aged individuals should differ from that in younger individuals. However, despite the increasing usage of implantable medical devices in aged patients, few studies examining the effects of aging upon the host response to biomaterials and the implications of this response for long-term integration and function have been performed. The objective of the present manuscript is to review the putative effects of aging upon the host response to implanted materials and to advance the hypothesis that age-related changes in the local microenvrionement, with emphasis on the extracellular matrix, play a previously unrecognized role in determining the host response to implants.
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Affiliation(s)
- Bryan N Brown
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Pittsburgh, PA 15219, United States; Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, 3700 O'Hara Street, Pittsburgh, PA 15260, United States; Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, University of Pittsburgh, 300 Halket Street, Pittsburgh, PA 15213, United States.
| | - Martin J Haschak
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Pittsburgh, PA 15219, United States; Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, 3700 O'Hara Street, Pittsburgh, PA 15260, United States
| | - Samuel T Lopresti
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Pittsburgh, PA 15219, United States; Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, 3700 O'Hara Street, Pittsburgh, PA 15260, United States
| | - Elizabeth C Stahl
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, 450 Technology Drive, Pittsburgh, PA 15219, United States; Department of Pathology, University of Pittsburgh School of Medicine, University of Pittsburgh, 200 Lothrop St., Pittsburgh, PA 15261, United States
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17
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Borges NA, Barros AF, Nakao LS, Dolenga CJ, Fouque D, Mafra D. Protein-Bound Uremic Toxins from Gut Microbiota and Inflammatory Markers in Chronic Kidney Disease. J Ren Nutr 2016; 26:396-400. [DOI: 10.1053/j.jrn.2016.07.005] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 07/20/2016] [Accepted: 07/31/2016] [Indexed: 11/11/2022] Open
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18
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Huang CY, Shih CM, Tsao NW, Lin YW, Shih CC, Chiang KH, Shyue SK, Chang YJ, Hsieh CK, Lin FY. The GroEL protein of Porphyromonas gingivalis regulates atherogenic phenomena in endothelial cells mediated by upregulating toll-like receptor 4 expression. Am J Transl Res 2016; 8:384-404. [PMID: 27158334 PMCID: PMC4846891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Accepted: 01/02/2016] [Indexed: 06/05/2023]
Abstract
Porphyromonas gingivalis (P. gingivalis) is a bacterial species that causes periodontitis. GroEL from P. gingivalis may possess biological activity and may be involved in the destruction of periodontal tissues. However, it is unclear whether P. gingivalis GroEL enhances the appearance of atherogenic phenomena in endothelial cells and vessels. Here, we constructed recombinant GroEL from P. gingivalis to investigate its effects in human coronary artery endothelial cells (HCAECs) in vitro and on aortas of high-cholesterol (HC)-fed B57BL/6 and B57BL/6-Tlr4(lps-del) mice in vivo. The results showed that GroEL impaired tube-formation capacity under non-cytotoxic conditions in HCAECs. GroEL increased THP-1 cell/HCAEC adhesion by increasing the expression of intracellular adhesion molecule (ICAM)-1 and vascular adhesion molecule (VCAM)-1 in endothelial cells. Additionally, GroEL increased DiI-oxidized low density lipoprotein (oxLDL) uptake, which may be mediated by elevated lectin-like oxLDL receptor (LOX)-1 but not scavenger receptor expressed by endothelial cells (SREC) and scavenger receptor class B1 (SR-B1) expression. Furthermore, GroEL interacts with toll-like receptor 4 (TLR4) and plays a causal role in atherogenesis in HCAECs. Human antigen R (HuR), an RNA-binding protein with a high affinity for the 3' untranslated region (3'UTR) of TLR4 mRNA, contributes to the up-regulation of TLR4 induced by GroEL in HCAECs. In a GroEL animal administration study, GroEL elevated ICAM-1, VCAM-1, LOX-1 and TLR4 expression in the aortas of HC diet-fed wild C57BL/6 but not C57BL/6-Tlr4(lps-del) mice. Taken together, our findings suggest that P. gingivalis GroEL may contribute to cardiovascular disorders by affecting TLR4 expression.
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Affiliation(s)
- Chun-Yao Huang
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical UniversityTaipei, Taiwan
- Division of Cardiology and Cardiovascular Research Center, Department of Internal Medicine, Taipei Medical University HospitalTaipei, Taiwan
| | - Chun-Ming Shih
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical UniversityTaipei, Taiwan
- Division of Cardiology and Cardiovascular Research Center, Department of Internal Medicine, Taipei Medical University HospitalTaipei, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical UniversityTaipei, Taiwan
| | - Nai-Wen Tsao
- Division of Cardiovascular Surgery, Taipei Medical University HospitalTaipei
| | - Yi-Wen Lin
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical UniversityTaipei, Taiwan
- Institute of Oral Biology, National Yang-Ming UniversityTaipei, Taiwan
| | - Chun-Che Shih
- Division of Cardiovascular Surgery, Taipei Veterans General HospitalTaipei, Taiwan
| | - Kuang-Hsing Chiang
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical UniversityTaipei, Taiwan
- Division of Cardiology and Cardiovascular Research Center, Department of Internal Medicine, Taipei Medical University HospitalTaipei, Taiwan
| | - Song-Kun Shyue
- Institute of Biomedical Sciences, Academia SinicaTaipei, Taiwan
| | - Yu-Jia Chang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical UniversityTaipei, Taiwan
| | - Chi-Kun Hsieh
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical UniversityTaipei, Taiwan
| | - Feng-Yen Lin
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical UniversityTaipei, Taiwan
- Division of Cardiology and Cardiovascular Research Center, Department of Internal Medicine, Taipei Medical University HospitalTaipei, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical UniversityTaipei, Taiwan
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19
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Buhlin K, Holmer J, Gustafsson A, Hörkkö S, Pockley AG, Johansson A, Paju S, Klinge B, Pussinen PJ. Association of periodontitis with persistent, pro-atherogenic antibody responses. J Clin Periodontol 2015; 42:1006-14. [PMID: 26362847 DOI: 10.1111/jcpe.12456] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2015] [Indexed: 12/16/2022]
Abstract
AIM To study antibody responses associated with molecular mimicry in periodontitis. MATERIAL & METHODS Fifty-four periodontitis cases (mean age 54.0 years) and 44 controls (53.6 years) were examined, after which cases received periodontal treatment. Established immunoassays were used to analyse levels of antibodies against two pathogens, Aggregatibacter actinomycetemcomitans (Aa) and Porphyromonas gingivalis (Pg), heat shock proteins (Hsp), Hsp60, Hsp65, and Hsp70, and epitopes of oxidized low-density lipoprotein (oxLDL) (CuOx-LDL and MDA-LDL) in plasma samples that were collected at baseline and after 3 (n = 48) and 6 (n = 30) months. RESULTS When age, sex, smoking habit, and the number of teeth were considered in multivariate logistic regressions, Aa and Pg IgG, Hsp65-IgA, CuOx-LDL-IgG and -IgM, and MDA-LDL-IgG antibody levels were associated with periodontitis, whereas Hsp60-IgG2 antibody levels were inversely associated. The Aa antibody levels significantly correlated with the levels of IgA antibodies to Hsp65 and Hsp70, and both OxLDL IgA antibody levels. The levels of antibodies to Pg correlated with IgG antibodies to Hsp60, Hsp70, and both oxLDL antibody epitopes. None of the antibody levels changed significantly after treatment. CONCLUSIONS Periodontitis is associated with persistently high levels of circulating antibodies that are reactive with pathogen- and host-derived antigens.
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Affiliation(s)
- Kåre Buhlin
- Division of Periodontology, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden.,Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
| | - Jacob Holmer
- Division of Periodontology, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Anders Gustafsson
- Division of Periodontology, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
| | - Sohvi Hörkkö
- Department of Medical Microbiology and Immunology and Medical Research Center, University of Oulu & Nordlab Oulu, Oulu University Hospital, Oulu, Finland
| | - Alan Graham Pockley
- The John van Geest Cancer Research Centre, Nottingham Trent University, Nottingham, UK
| | - Anders Johansson
- Department of Molecular Periodontology, Umeå University, Umeå, Sweden
| | - Susanna Paju
- Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
| | - Björn Klinge
- Division of Periodontology, Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden.,Department of Periodontology, Faculty of Odontology, Malmo University, Malmo, Sweden
| | - Pirkko J Pussinen
- Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
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20
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Bennmann D, Kannicht C, Fisseau C, Jacobs K, Navarette-Santos A, Hofmann B, Horstkorte R. Glycation of the high affinity NGF-receptor and RAGE leads to reduced ligand affinity. Mech Ageing Dev 2015. [PMID: 26212415 DOI: 10.1016/j.mad.2015.07.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AGEs are posttranslational modifications generated by irreversible non-enzymatic crosslinking reactions between sugars and proteins - a reaction referred to as glycation. Glycation, a feature of ageing, can lead to non-degradable and less functional proteins and enzymes and can additionally induce inflammation and further pathophysiological processes such as neurodegeneration. In this study we investigated the influence of glycation on the high affinity NGF-receptor TrkA and the AGE-receptor RAGE. We quantified the binding affinity of the TrkA-receptor and RAGE to their ligands by surface plasmon resonance (SPR) and compared these to the binding affinity after glycation. At the same time, we established a glycation procedure using SPR. We found that glycation of TrkA reduced the affinity to NGF by a factor of three, which could be shown to lead to a reduction of NGF-dependent neurite outgrowth in PC12 cells. Glycation of RAGE reduced binding affinity of AGEs by 10-fold.
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Affiliation(s)
- Dorit Bennmann
- Institute for Physiological Chemistry, Martin-Luther-University Halle-Wittenberg, Hollystr. 1, D-06114 Halle (Saale), Germany
| | - Christoph Kannicht
- Octapharma Biopharmaceuticals GmbH, Molecular Biochemistry, Walther-Nernst-Str. 3, D-12489 Berlin, Germany
| | - Claudine Fisseau
- Octapharma Biopharmaceuticals GmbH, Molecular Biochemistry, Walther-Nernst-Str. 3, D-12489 Berlin, Germany
| | - Kathleen Jacobs
- Clinic and Policlinic for Cardiothoracic Surgery, University Hospital Halle, Ernst-Grube-Str. 40, D-06120 Halle (Saale), Germany
| | - Alexander Navarette-Santos
- Center for Medical Basic Research of the Martin-Luther University Halle-Wittenberg, Ernst-Grube-Str. 40, D-06120 Halle (Saale), Germany
| | - Britt Hofmann
- Clinic and Policlinic for Cardiothoracic Surgery, University Hospital Halle, Ernst-Grube-Str. 40, D-06120 Halle (Saale), Germany
| | - Rüdiger Horstkorte
- Institute for Physiological Chemistry, Martin-Luther-University Halle-Wittenberg, Hollystr. 1, D-06114 Halle (Saale), Germany.
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21
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Alpha-mangostin attenuation of hyperglycemia-induced ocular hypoperfusion and blood retinal barrier leakage in the early stage of type 2 diabetes rats. BIOMED RESEARCH INTERNATIONAL 2015; 2015:785826. [PMID: 25950001 PMCID: PMC4407409 DOI: 10.1155/2015/785826] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 03/25/2015] [Indexed: 01/11/2023]
Abstract
The present study examined effects of alpha-mangostin (α-MG) supplementation on the retinal microvasculature, including ocular blood flow (OBF) and blood-retinal barrier (BRB) permeability in a type 2 diabetic animal model. Male Sprague-Dawley rats were divided into four groups: normal control and diabetes with or without α-MG supplementation. Alpha-mangostin (200 mg/Kg/day) was administered by gavage feeding for 8 weeks. The effects of α-MG on biochemical and physiological parameters including mean arterial pressure (MAP), OBF, and BRB leakage were investigated. Additionally, levels of retinal malondialdehyde (MDA), advance glycation end products (AGEs), receptor of advance glycation end products (RAGE), tumour necrosis factor alpha (TNF-α), and vascular endothelial growth factor (VEGF) were evaluated. The elevated blood glucose, HbA1c, cholesterol, triglyceride, serum insulin, and HOMA-IR were observed in DM2 rats. Moreover, DM2 rats had significantly decreased OBF but statistically increased MAP and leakage of the BRB. The α-MG-treated DM2 rats showed significantly lower levels of retinal MDA, AGEs, RAGE, TNF-α, and VEGF than the untreated group. Interestingly, α-MG supplementation significantly increased OBF while it decreased MAP and leakage of BRB. In conclusion, α-MG supplementation could restore OBF and improve the BRB integrity, indicating its properties closely associated with antihyperglycemic, antioxidant, anti-inflammatory, and antiglycation activities.
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Moller-Tank S, Maury W. Phosphatidylserine receptors: enhancers of enveloped virus entry and infection. Virology 2014; 468-470:565-580. [PMID: 25277499 PMCID: PMC4252826 DOI: 10.1016/j.virol.2014.09.009] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Revised: 07/15/2014] [Accepted: 09/08/2014] [Indexed: 12/23/2022]
Abstract
A variety of both RNA and DNA viruses envelop their capsids in a lipid bilayer. One of the more recently appreciated benefits this envelope is incorporation of phosphatidylserine (PtdSer). Surface exposure of PtdSer disguises viruses as apoptotic bodies; tricking cells into engulfing virions. This mechanism is termed apoptotic mimicry. Several PtdSer receptors have been identified to enhance virus entry and we have termed this group of proteins PtdSer-mediated virus entry enhancing receptors or PVEERs. These receptors enhance entry of a range of enveloped viruses. Internalization of virions by PVEERs provides a broad mechanism of entry with little investment by the virus itself. PVEERs may allow some viruses to attach to cells, thereby making viral glycoprotein/cellular receptor interactions more probable. Alternatively, other viruses may rely entirely on PVEERs for internalization into endosomes. This review provides an overview of PtdSer receptors that serve as PVEERs and the biology behind virion/PVEER interaction. Phosphatidylserine (PtdSer) receptors can mediate entry of enveloped viruses. PtdSer is present on the outer leaflet of the virion envelope. PtdSer receptors are expressed on a variety of primary cells and cell lines. Characteristics of PtdSer receptors that mediate virus entry are defined.
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Affiliation(s)
- Sven Moller-Tank
- Department of Microbiology, University of Iowa, Iowa City, IA 52242, USA
| | - Wendy Maury
- Department of Microbiology, University of Iowa, Iowa City, IA 52242, USA.
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Ott C, Jacobs K, Haucke E, Navarrete Santos A, Grune T, Simm A. Role of advanced glycation end products in cellular signaling. Redox Biol 2014; 2:411-29. [PMID: 24624331 PMCID: PMC3949097 DOI: 10.1016/j.redox.2013.12.016] [Citation(s) in RCA: 789] [Impact Index Per Article: 78.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 12/19/2013] [Indexed: 12/18/2022] Open
Abstract
Improvements in health care and lifestyle have led to an elevated lifespan and increased focus on age-associated diseases, such as neurodegeneration, cardiovascular disease, frailty and arteriosclerosis. In all these chronic diseases protein, lipid or nucleic acid modifications are involved, including cross-linked and non-degradable aggregates, such as advanced glycation end products (AGEs). Formation of endogenous or uptake of dietary AGEs can lead to further protein modifications and activation of several inflammatory signaling pathways. This review will give an overview of the most prominent AGE-mediated signaling cascades, AGE receptor interactions, prevention of AGE formation and the impact of AGEs during pathophysiological processes.
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Key Words
- ADAMST, a disintegrin and metalloproteinase with a thrombospondin type 1 motif
- AGE, advanced glycation end products
- AGE-receptors
- Advanced glycation end products
- Age-associated diseases
- Aggregates
- Aging
- E, from embryonic day
- EGFR, epidermal growth factor receptor
- ERK, extracellular-signal regulated kinase
- F3NK, fructosamine 3-phosphokinase
- FKHRL1, forkhead transcription factor
- HDL, high density lipoprotein
- HMGB1, high-mobility-group-protein B1
- HNE, 4-hydroxy-trans-2-nonenal
- Jak1/2, Janus kinase 1/2
- LDL, low density lipoprotein
- MDA, malondialdehyde
- MEKK, mitogen-activated protein/ERK kinase kinases
- MnSOD, manganese superoxide dismutase
- NF-κB
- Nf-κB, nuclear factor-light-chain-enhancer of activated B
- Oxidative stress
- PIK3, phosphoinositol 3 kinase
- RAGE
- RAGE, receptor of AGEs
- RCC, reactive carbonyl compounds
- Reactive carbonyl compounds
- S100B, S100 calcium binding protein B
- SIRt1, NAD+-dependent deacetylase and survival factor 1
- SR-A, scavenger receptor class A
- Signaling
- Stat 1/2, signal transducers and activators of transcription 1/2
- VSMC, vascular smooth muscle cells
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Affiliation(s)
- Christiane Ott
- Department of Nutritional Toxicology, Institute of Nutrition, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Kathleen Jacobs
- Clinic for Cardiothoracic Surgery, University Hospital Halle (Saale), Martin-Luther-University of Halle-Wittenberg, Ernst-Grube Strasse 40, D-06120 Halle (Saale), Germany
| | - Elisa Haucke
- Institute for Anatomy and Cell Biology, Faculty of Medicine, Martin-Luther-University of Halle-Wittenberg, 06108 Halle (Saale), Germany
| | - Anne Navarrete Santos
- Institute for Anatomy and Cell Biology, Faculty of Medicine, Martin-Luther-University of Halle-Wittenberg, 06108 Halle (Saale), Germany
| | - Tilman Grune
- Department of Nutritional Toxicology, Institute of Nutrition, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Andreas Simm
- Clinic for Cardiothoracic Surgery, University Hospital Halle (Saale), Martin-Luther-University of Halle-Wittenberg, Ernst-Grube Strasse 40, D-06120 Halle (Saale), Germany
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Yu X, Liu J, Zhu H, Xia Y, Gao L, Li Z, Jia N, Shen W, Yang Y, Niu W. An interactive association of advanced glycation end-product receptor gene four common polymorphisms with coronary artery disease in northeastern Han Chinese. PLoS One 2013; 8:e76966. [PMID: 24155913 PMCID: PMC3796558 DOI: 10.1371/journal.pone.0076966] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 08/26/2013] [Indexed: 01/23/2023] Open
Abstract
Background Growing evidence indicates that advanced glycation end-product receptor (RAGE) might play a contributory role in the pathogenesis of coronary artery disease (CAD). To shed some light from a genetic perspective, we sought to investigate the interactive association of RAGE gene four common polymorphisms (rs1800625 or T-429C, rs1800624 or T-374A, rs2070600 or Gly82Ser, and rs184003 or G1704A) with the risk of developing CAD in a large northeastern Han Chinese population. Methodology/Principal Findings This was a hospital-based case-control study incorporating 1142 patients diagnosed with CAD and 1106 age- and gender-matched controls. All individuals were angiographically confirmed. Risk estimates were expressed as odds ratio (OR) and 95% confidence interval (CI). Overall there were significant differences in the genotype and allele distributions of rs1800625 and rs184003, even after the Bonferroni correction. Logistic regression analyses indicated that rs1800625 and rs184003 were associated with significant risk of CAD under both additive (OR = 1.20 and 1.23; 95% CI: 1.06–1.37 and 1.06–1.42; P = 0.006 and 0.008) and recessive (OR = 1.75 and 2.39; 95% CI: 1.28–2.40 and 1.47–3.87; P<0.001 and <0.001) models after adjusting for confounders. In haplotype analyses, haplotypes C-T-G-G and T-A-G-T (alleles in order of rs1800625, rs1800624, rs2070600 and rs184003), overrepresented in patients, were associated with 52% (95% CI: 1.19–1.87; P = 0.0052) and 63% (95% CI: 1.14–2.34; P = 0.0075) significant increases in adjusted risk for CAD. Further interactive analyses identified an overall best multifactor dimensionality reduction (MDR) model including rs1800625 and rs184003. This model had a maximal testing accuracy of 0.6856 and a cross-validation consistency of 10 out of 10 (P = 0.0016). The validity of this model was substantiated by classical Logistic regression analysis. Conclusions Our findings provided strong evidence for the potentially contributory roles of RAGE multiple genetic polymorphisms, especially in the context of locus-to-locus interaction, in the pathogenesis of CAD among northeastern Han Chinese.
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Affiliation(s)
- Xiaohong Yu
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Jun Liu
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Hao Zhu
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Yunlong Xia
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Lianjun Gao
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Zhen Li
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Nan Jia
- Department of Hypertension, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Weifeng Shen
- Department of Cardiology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yanzong Yang
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
- * E-mail: (YY); (WN)
| | - Wenquan Niu
- State Key Laboratory of Medical Genomics, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Institute of Hypertension, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- * E-mail: (YY); (WN)
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Feng L, Zhu M, Zhang M, Gu J, Jia X, Tan X, Gao C, Zhu Q. The protection of 4,4′-diphenylmethane-bis(methyl) carbamate from Cortex Mori on advanced glycation end product-induced endothelial dysfunction: Via inhibiting AGE formation or blocking AGEs–RAGE axis? Fitoterapia 2013; 89:239-49. [DOI: 10.1016/j.fitote.2013.06.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Revised: 05/25/2013] [Accepted: 06/01/2013] [Indexed: 10/26/2022]
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Shannahan JH, Kodavanti UP, Brown JM. Manufactured and airborne nanoparticle cardiopulmonary interactions: a review of mechanisms and the possible contribution of mast cells. Inhal Toxicol 2012; 24:320-39. [PMID: 22486349 DOI: 10.3109/08958378.2012.668229] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Human inhalation exposures to manufactured nanoparticles (NP) and airborne ultrafine particles (UFP) continues to increase in both occupational and environmental settings. UFP exposures have been associated with increased cardiovascular mortality and morbidity, while ongoing research supports adverse systemic and cardiovascular health effects after NP exposures. Adverse cardiovascular health effects include alterations in heart rate variability, hypertension, thrombosis, arrhythmias, increased myocardial infarction, and atherosclerosis. Exactly how UFP and NP cause these negative cardiovascular effects is poorly understood, however a variety of mediators and mechanisms have been proposed. UFP and NP, as well as their soluble components, are known to systemically translocate from the lung. Translocated particles could mediate cardiovascular toxicity through direct interactions with the vasculature, blood, and heart. Recent study suggests that sensory nerve stimulation within the lung may also contribute to UFP- and NP-induced acute cardiovascular alterations. Activation of sensory nerves, such as C-fibers, within the lung may result in altered cardiac rhythm and function. Lastly, release of pulmonary-derived mediators into systemic circulation has been proposed to facilitate cardiovascular effects. In general, these proposed pulmonary-derived mediators include proinflammatory cytokines, oxidatively modified macromolecules, vasoactive proteins, and prothrombotic factors. These pulmonary-derived mediators have been postulated to contribute to the subsequent prothrombotic, atherogenic, and inflammatory effects after exposure. This review will evaluate the potential contribution of individual mediators and mechanisms in facilitating cardiopulmonary toxicity following inhalation of UFP and NP. Lastly, we will appraise the literature and propose a hypothesis regarding the possible role of mast cells in contributing to these systemic effects.
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Affiliation(s)
- Jonathan H Shannahan
- Department of Pharmacology and Toxicology, Brody School of Medicine, East Carolina University, Greenville, NC 27834, USA
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27
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Robinson AB, Stogsdill JA, Lewis JB, Wood TT, Reynolds PR. RAGE and tobacco smoke: insights into modeling chronic obstructive pulmonary disease. Front Physiol 2012; 3:301. [PMID: 22934052 PMCID: PMC3429072 DOI: 10.3389/fphys.2012.00301] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Accepted: 07/10/2012] [Indexed: 12/31/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a progressive condition characterized by chronic airway inflammation and airspace remodeling, leading to airflow limitation that is not completely reversible. Smoking is the leading risk factor for compromised lung function stemming from COPD pathogenesis. First- and second-hand cigarette smoke contain thousands of constituents, including several carcinogens and cytotoxic chemicals that orchestrate chronic lung inflammation and destructive alveolar remodeling. Receptors for advanced glycation end-products (RAGE) are multi-ligand cell surface receptors primarily expressed by diverse lung cells. RAGE expression increases following cigarette smoke exposure and expression is elevated in the lungs of patients with COPD. RAGE is responsible in part for inducing pro-inflammatory signaling pathways that culminate in expression and secretion of several cytokines, chemokines, enzymes, and other mediators. In the current review, new transgenic mouse models that conditionally over-express RAGE in pulmonary epithelium are discussed. When RAGE is over-expressed throughout embryogenesis, apoptosis in the peripheral lung causes severe lung hypoplasia. Interestingly, apoptosis in RAGE transgenic mice occurs via conserved apoptotic pathways also known to function in advanced stages of COPD. RAGE over-expression in the adult lung models features of COPD including pronounced inflammation and loss of parenchymal tissue. Understanding the biological contributions of RAGE during cigarette smoke-induced inflammation may provide critically important insight into the pathology of COPD.
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Affiliation(s)
| | | | | | | | - Paul R. Reynolds
- Department of Physiology and Developmental Biology, Brigham Young UniversityProvo, UT, USA
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28
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Albert DA, Ward A, Allweiss P, Graves DT, Knowler WC, Kunzel C, Leibel RL, Novak KF, Oates TW, Papapanou PN, Schmidt AM, Taylor GW, Lamster IB, Lalla E. Diabetes and oral disease: implications for health professionals. Ann N Y Acad Sci 2012; 1255:1-15. [PMID: 22409777 PMCID: PMC3429365 DOI: 10.1111/j.1749-6632.2011.06460.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
"Diabetes and Oral Disease: Implications for Health Professionals" was a one-day conference convened by the Columbia University College of Dental Medicine, the Columbia University College of Physicians and Surgeons, and the New York Academy of Sciences on May 4, 2011 in New York City. The program included an examination of the bidirectional relationship between oral disease and diabetes and the interprofessional working relationships for the care of people who have diabetes. The overall goal of the conference was to promote discussion among the healthcare professions who treat people with diabetes, encourage improved communication and collaboration among them, and, ultimately, improve patient management of the oral and overall effects of diabetes. Attracting over 150 members of the medical and dental professions from eight different countries, the conference included speakers from academia and government and was divided into four sessions. This report summarizes the scientific presentations of the event.
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Affiliation(s)
- David A. Albert
- Columbia University College of Dental Medicine, New York, New York
| | - Angela Ward
- Columbia University College of Dental Medicine, New York, New York
| | - Pamela Allweiss
- Centers for Disease Control and Prevention, Atlanta, Georgia
- University of Kentucky College of Public Health, Lexington, Kentucky
| | - Dana T. Graves
- University of Pennsylvania School of Dental Medicine, Philadelphia, Pennsylvania
| | - William C. Knowler
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Phoenix, Arizona
| | - Carol Kunzel
- Columbia University College of Dental Medicine, New York, New York
| | - Rudolph L. Leibel
- Columbia University College of Physicians and Surgeons, New York, New York
| | | | - Thomas W. Oates
- University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | | | | | - George W. Taylor
- University of California at San Francisco School of Dentistry, San Francisco, California
| | - Ira B. Lamster
- Columbia University College of Dental Medicine, New York, New York
| | - Evanthia Lalla
- Columbia University College of Dental Medicine, New York, New York
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Akirav EM, Preston-Hurlburt P, Garyu J, Henegariu O, Clynes R, Schmidt AM, Herold KC. RAGE expression in human T cells: a link between environmental factors and adaptive immune responses. PLoS One 2012; 7:e34698. [PMID: 22509345 PMCID: PMC3324532 DOI: 10.1371/journal.pone.0034698] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Accepted: 03/08/2012] [Indexed: 12/18/2022] Open
Abstract
The Receptor for Advanced Glycation Endproducts (RAGE) is a scavenger ligand that binds glycated endproducts as well as molecules released during cell death such as S100b and HMGB1. RAGE is expressed on antigen presenting cells where it may participate in activation of innate immune responses but its role in adaptive human immune responses has not been described. We have found that RAGE is expressed intracellularly in human T cells following TCR activation but constitutively on T cells from patients with diabetes. The levels of RAGE on T cells from patients with diabetes are not related to the level of glucose control. It co-localizes to the endosomes. Its expression increases in activated T cells from healthy control subjects but bystander cells also express RAGE after stimulation of the antigen specific T cells. RAGE ligands enhance RAGE expression. In patients with T1D, the level of RAGE expression decreases with T cell activation. RAGE+ T cells express higher levels of IL-17A, CD107a, and IL-5 than RAGE− cells from the same individual with T1D. Our studies have identified the expression of RAGE on adaptive immune cells and a role for this receptor and its ligands in modulating human immune responses.
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Affiliation(s)
- Eitan M. Akirav
- Departments of Immunobiology and Internal Medicine, Yale University, New Haven, Connecticut, United States of America
| | - Paula Preston-Hurlburt
- Departments of Immunobiology and Internal Medicine, Yale University, New Haven, Connecticut, United States of America
| | - Justin Garyu
- Departments of Immunobiology and Internal Medicine, Yale University, New Haven, Connecticut, United States of America
| | - Octavian Henegariu
- Departments of Immunobiology and Internal Medicine, Yale University, New Haven, Connecticut, United States of America
| | - Raphael Clynes
- Department of Medicine, Columbia University, New York, New York, United States of America
| | - Ann Marie Schmidt
- Department of Medicine, New York University, New York, New York, United States of America
| | - Kevan C. Herold
- Departments of Immunobiology and Internal Medicine, Yale University, New Haven, Connecticut, United States of America
- * E-mail:
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Ramasamy R, Yan SF, Schmidt AM. Receptor for AGE (RAGE): signaling mechanisms in the pathogenesis of diabetes and its complications. Ann N Y Acad Sci 2012; 1243:88-102. [PMID: 22211895 DOI: 10.1111/j.1749-6632.2011.06320.x] [Citation(s) in RCA: 349] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The receptor for advanced glycation endproducts (RAGE) was first described as a signal transduction receptor for advanced glycation endproducts (AGEs), the products of nonenzymatic glycation and oxidation of proteins and lipids that accumulate in diabetes and in inflammatory foci. The discovery that RAGE was a receptor for inflammatory S100/calgranulins and high mobility group box 1 (HMGB1) set the stage for linking RAGE to both the consequences and causes of types 1 and 2 diabetes. Recent discoveries regarding the structure of RAGE as well as novel intracellular binding partner interactions advance our understanding of the mechanisms by which RAGE evokes pathological consequences and underscore strategies by which antagonism of RAGE in the clinic may be realized. Finally, recent data tracking RAGE in the clinic suggest that levels of soluble RAGEs and polymorphisms in the gene encoding RAGE may hold promise for the identification of patients who are vulnerable to the complications of diabetes and/or are receptive to therapeutic interventions designed to prevent and reverse the damage inflicted by chronic hyperglycemia, irrespective of its etiology.
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Affiliation(s)
- Ravichandran Ramasamy
- Diabetes Research Program, Division of Endocrinology, Department of Medicine, New York University School of Medicine, New York, New York 10016, USA
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31
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Ramasamy R, Yan SF, Schmidt AM. Receptor for AGE (RAGE): signaling mechanisms in the pathogenesis of diabetes and its complications. Ann N Y Acad Sci 2011. [PMID: 22211895 DOI: 10.1111/j.1749-6632.2011.06320.x.receptor] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The receptor for advanced glycation endproducts (RAGE) was first described as a signal transduction receptor for advanced glycation endproducts (AGEs), the products of nonenzymatic glycation and oxidation of proteins and lipids that accumulate in diabetes and in inflammatory foci. The discovery that RAGE was a receptor for inflammatory S100/calgranulins and high mobility group box 1 (HMGB1) set the stage for linking RAGE to both the consequences and causes of types 1 and 2 diabetes. Recent discoveries regarding the structure of RAGE as well as novel intracellular binding partner interactions advance our understanding of the mechanisms by which RAGE evokes pathological consequences and underscore strategies by which antagonism of RAGE in the clinic may be realized. Finally, recent data tracking RAGE in the clinic suggest that levels of soluble RAGEs and polymorphisms in the gene encoding RAGE may hold promise for the identification of patients who are vulnerable to the complications of diabetes and/or are receptive to therapeutic interventions designed to prevent and reverse the damage inflicted by chronic hyperglycemia, irrespective of its etiology.
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Affiliation(s)
- Ravichandran Ramasamy
- Diabetes Research Program, Division of Endocrinology, Department of Medicine, New York University School of Medicine, New York, New York 10016, USA
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Vernon LT, Babineau DC, Demko CA, Lederman MM, Wang X, Toossi Z, Weinberg A, Rodriguez B. A prospective cohort study of periodontal disease measures and cardiovascular disease markers in HIV-infected adults. AIDS Res Hum Retroviruses 2011; 27:1157-66. [PMID: 21443451 PMCID: PMC3206743 DOI: 10.1089/aid.2010.0320] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The determinants of HIV-associated cardiovascular disease (CVD) are not well understood. Periodontal disease (PD) has been linked to CVD but this connection has not been examined in HIV infection. We followed a cohort of HIV-infected adults to ascertain whether PD was associated with carotid artery intima media thickness (IMT) and brachial artery flow-mediated dilation (FMD). We performed a longitudinal observational study of HIV-infected adults on HAART for <2 years with no known heart disease. PD was characterized clinically and microbiologically. Cardiovascular disease was assessed by IMT/FMD. Linear mixed models assessed cross-sectional and longitudinal associations between PD and FMD/IMT. Forty three HIV(+) adults completed a median of 24 (6-44) months on the study. Defining delta to be the change in a variable between baseline and a follow-up time, longitudinally, on average and after adjusting for change in time, CVD-specific and HIV-specific potential confounding covariates, a 1-log(10) increase in delta Porphyromonas gingivalis was associated with a 0.013 mm increase in delta IMT (95% CI: 0.0006-0.0262; p=0.04). After adjusting for the same potential confounding covariates, a 10% increase in delta gingival recession was associated with a 2.3% increase in delta FMD (95% CI: 0.4-4.2; p=0.03). In a cohort of HIV-infected adults, an increase in subgingival Porphyromonas gingivalis, a known periodontal pathogen, was significantly associated with longitudinal increases in IMT, while increased gingival recession, which herein may represent PD resolution, was significantly associated with longitudinal improvement in FMD. In the context of HIV infection, PD may contribute to CVD risk. Intervention studies treating PD may help clarify this association.
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Affiliation(s)
- Lance T Vernon
- Case Western Reserve University School of Dental Medicine, Department of Biological Sciences, Cleveland, Ohio 44106-4905, USA.
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Inaba H, Tagashira M, Kanda T, Amano A. Proliferation of Smooth Muscle Cells Stimulated byPorphyromonas Gingivalisis Inhibited by Apple Polyphenol. J Periodontol 2011; 82:1616-22. [DOI: 10.1902/jop.2011.100785] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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