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Khalid M, Adem A. The dynamic roles of advanced glycation end products. VITAMINS AND HORMONES 2024; 125:1-29. [PMID: 38997161 DOI: 10.1016/bs.vh.2024.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
Advanced glycation end products (AGEs) are a heterogeneous group of potentially harmful molecules that can form as a result of a non-enzymatic reaction between reducing sugars and proteins, lipids, or nucleic acids. The total body pool of AGEs reflects endogenously produced AGEs as well as exogeneous AGEs that come from sources such as diet and the environment. Engagement of AGEs with their cellular receptor, the receptor for advanced glycation end products (RAGE), which is expressed on the surface of various cell types, converts a brief pulse of cellular activation to sustained cellular dysfunction and tissue destruction. The AGEs/RAGE interaction triggers a cascade of intracellular signaling pathways such as mitogen-activated protein kinase/extracellular signal-regulated kinase, phosphoinositide 3-kinases, transforming growth factor beta, c-Jun N-terminal kinases (JNK), and nuclear factor kappa B, which leads to the production of pro-inflammatory cytokines, chemokines, adhesion molecules, and oxidative stress. All these events contribute to the progression of several chronic diseases. This chapter will provide a comprehensive understanding of the dynamic roles of AGEs in health and disease which is crucial to develop interventions that prevent and mitigate the deleterious effects of AGEs accumulation.
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Affiliation(s)
- Mariyam Khalid
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Abdu Adem
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, Khalifa University, Abu Dhabi, United Arab Emirates.
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Okuda K, Nagano N, Nakazaki K, Matsuda K, Tokunaga W, Fuwa K, Aoki R, Okahashi A, Morioka I. Metabolomic profiles of preterm small-for-gestational age infants. Pediatr Neonatol 2024:S1875-9572(24)00078-0. [PMID: 38789293 DOI: 10.1016/j.pedneo.2023.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 11/06/2023] [Accepted: 11/19/2023] [Indexed: 05/26/2024] Open
Abstract
We aimed to characterize the metabolomic profiles in preterm small-for-gestational age (SGA) infants using cord blood. We conducted a gestational age (GA)-matched case-control study that included 30 preterm infants who were categorized into two groups: SGA infants, with a birth weight (BW) < 10th percentile for GA (n = 15) and non-SGA infants, with BW ≥ 10th percentile for GA (n = 15). SGA infants with chromosomal or genetic abnormalities were excluded. At birth, the umbilicus was double-clamped, and the cord blood was sampled from the umbilical vein. Metabolomic analyses were performed using capillary electrophoresis time-of-flight mass spectrometry. The median GA at birth was not significantly different between the two groups [SGA, 32 (26-36) weeks; non-SGA, 32 (25-35) weeks; p = 0.661)]. Of the 255 metabolites analyzed, 19 (7.5%) showed significant differences between SGA and non-SGA infants. There were significant reductions in the carnosine, hypotaurine, and S-methylcysteine levels in SGA infants as compared to non-SGA infants (p < 0.05). Carnosine was correlated with gestational age, BMI before pregnancy, body weight gain during pregnancy (p = 0.002, p = 0.023, and p = 0.020, respectively). In conclusion, preterm SGA infants have low levels of cord blood antioxidative- and antiglycation-related metabolites, making them vulnerable to oxidative stress.
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Affiliation(s)
- Koh Okuda
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Nobuhiko Nagano
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan.
| | - Kimitaka Nakazaki
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Kengo Matsuda
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Wataru Tokunaga
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Kazumasa Fuwa
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Ryoji Aoki
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Aya Okahashi
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
| | - Ichiro Morioka
- Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan
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Liu J, Feng C, Liu M, Zhou Y, Shen Y, Li J, Wei X. An immune-related multi-omics analysis of dolichyl-diphosphooligosaccharide protein glycosyltransferase in glioma: Prognostic value exploration and competitive endogenous RNA network identification. IET Syst Biol 2023; 17:271-287. [PMID: 37606290 PMCID: PMC10580000 DOI: 10.1049/syb2.12075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/13/2023] [Accepted: 08/09/2023] [Indexed: 08/23/2023] Open
Abstract
Dolichyl-diphosphooligosaccharide protein glycosyltransferase (DDOST) plays a pivotal role in the glycosylation of asparagine residues on nascent polypeptides. However, the biological role of DDOST in glioma remains unclear. The mRNA expression of DDOST in glioma was identified using TCGA, CGGA, GEO and Rembrandt datasets. Immunohistochemistry assay was conducted to examine the protein level of DDOST. Cox regression analysis, nomograms and calibration plots were used to evaluate the prognostic value of DDOST. The association between DDOST and immune cell infiltration was evaluated using CIBERSORT algorithm. Additionally, DNA methylation and ceRNA regulatory network of DDOST expression were investigated using the LinkedOmics and ENCORI databases. The authors found that DDOST was substantially expressed at the mRNA and protein levels. Functional enrichment analysis revealed close associations between DDOST and immune-related pathways, as well as immune cell infiltration. In addition, DDOST exhibited synergistic effects with tumour mutational burden (TMB) and other immune checkpoints. For expression regulation mechanisms, DDOST had low DNA methylation levels in high-grade gliomas and may be involved in multiple ceRNA networks in glioma. Thus, DDOST may serve as an unfavourable biomarker for gliomas. DNA methylation and ceRNA regulatory networks of DDOST expression were identified for the first time in this multi-omics study.
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Affiliation(s)
- Jie Liu
- Department of NeurosurgeryThe Second People's Hospital of LiaochengLiaochengChina
| | - Chao Feng
- Department of NeurologyPeople's Hospital of Laoling CityDezhouShandongChina
| | - Min Liu
- NHC Key Laboratory of Hormones and DevelopmentTianjin Key Laboratory of Metabolic DiseasesChu Hsien‐I Memorial Hospital & Tianjin Institute of EndocrinologyTianjin Medical UniversityTianjinChina
| | - Yan Zhou
- Department of NeurosurgeryUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Yuezhen Shen
- Department of NeurologyThe Second People's Hospital of LiaochengLiaochengChina
| | - Jianxin Li
- Institution of Neurological Trauma and RepairCharacteristic Medical Center of the Chinese People's Armed Police ForceTianjinChina
| | - Xiangyang Wei
- Institution of Neurological Trauma and RepairCharacteristic Medical Center of the Chinese People's Armed Police ForceTianjinChina
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Bajwa S, Luebbe A, Vo NDN, Piskor EM, Kosan C, Wolf G, Loeffler I. RAGE is a critical factor of sex-based differences in age-induced kidney damage. Front Physiol 2023; 14:1154551. [PMID: 37064891 PMCID: PMC10090518 DOI: 10.3389/fphys.2023.1154551] [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: 01/30/2023] [Accepted: 03/14/2023] [Indexed: 03/31/2023] Open
Abstract
Introduction: Advanced glycation end products (AGEs) are a heterogeneous group of molecules with potential pathophysiological effects on the kidneys. Fibrosis together with the accumulation of AGEs has been investigated for its contribution to age-related decline in renal function. AGEs mediate their effects in large parts through their interactions with the receptor for AGEs (RAGE). RAGE is a transmembrane protein that belongs to the immunoglobulin superfamily and has the ability to interact with multiple pro-inflammatory/pro-oxidative ligands. The role of RAGE in aging kidneys has not been fully characterized, especially for sex-based differences. Methods: Therefore, we analyzed constitutive RAGE knockout (KO) mice in an age- and sex-dependent manner. Paraffin-embedded kidney sections were used for histological analysis and protein expression of fibrosis and damage markers. RNA expression analysis from the kidney cortex was done by qPCR for AGE receptors, kidney damage, and early inflammation/fibrosis factors. FACS analysis was used for immune cell profiling of the kidneys. Results: Histological analysis revealed enhanced infiltration of immune cells (positive for B220) in aged (>70 weeks old) KO mice in both sexes. FACS analysis revealed a similar pattern of enhanced B-1a cells in aged KO mice. There was an age-based increase in pro-fibrotic and pro-inflammatory markers (IL-6, TNF, TGF-β1, and SNAIL1) in KO male mice that presumably contributed to renal fibrosis and renal damage (glomerular and tubular). In fact, in KO mice, there was an age-dependent increase in renal damage (assessed by NGAL and KIM1) that was accompanied by increased fibrosis (assessed by CTGF). This effect was more pronounced in male KO mice than in the female KO mice. In contrast to the KO animals, no significant increase in damage markers was detectable in wild-type animals at the age examined (>70 weeks old). Moreover, there is an age-based increase in AGEs and scavenger receptor MSR-A2 in the kidneys. Discussion: Our data suggest that the loss of the clearance receptor RAGE in male animals further accelerates age-dependent renal damage; this could be in part due to an increase in AGEs load during aging and the absence of protective female hormones. By contrast, in females, RAGE expression seems to play only a minor role when compared to tissue pathology.
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Affiliation(s)
- Seerat Bajwa
- Department of Internal Medicine III, Jena University Hospital, Jena, Germany
| | - Alexander Luebbe
- Department of Internal Medicine III, Jena University Hospital, Jena, Germany
| | - Ngoc Dong Nhi Vo
- Department of Internal Medicine III, Jena University Hospital, Jena, Germany
| | - Eva-Maria Piskor
- Institute of Biochemistry and Biophysics, Center for Molecular Biomedicine (CMB), Friedrich Schiller University, Jena, Germany
| | - Christian Kosan
- Institute of Biochemistry and Biophysics, Center for Molecular Biomedicine (CMB), Friedrich Schiller University, Jena, Germany
| | - Gunter Wolf
- Department of Internal Medicine III, Jena University Hospital, Jena, Germany
| | - Ivonne Loeffler
- Department of Internal Medicine III, Jena University Hospital, Jena, Germany
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Dozio E, Caldiroli L, Molinari P, Castellano G, Delfrate NW, Romanelli MMC, Vettoretti S. Accelerated AGEing: The Impact of Advanced Glycation End Products on the Prognosis of Chronic Kidney Disease. Antioxidants (Basel) 2023; 12:antiox12030584. [PMID: 36978832 PMCID: PMC10045600 DOI: 10.3390/antiox12030584] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 03/03/2023] Open
Abstract
Advanced glycation end products (AGEs) are aging products. In chronic kidney disease (CKD), AGEs accumulate due to the increased production, reduced excretion, and the imbalance between oxidant/antioxidant capacities. CKD is therefore a model of aging. The aim of this review is to summarize the present knowledge of AGEs in CKD onset and progression, also focusing on CKD-related disorders (cardiovascular diseases, sarcopenia, and nutritional imbalance) and CKD mortality. The role of AGEs as etiopathogenetic molecules, as well as potential markers of disease progression and/or therapeutic targets, will be discussed.
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Affiliation(s)
- Elena Dozio
- Department of Biomedical Science for Health, Università degli Studi di Milano, 20133 Milan, Italy
| | - Lara Caldiroli
- Unit of Nephrology, Dialysis and Kidney Transplantation, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, 20122 Milan, Italy
- Correspondence: ; Tel.: +39-025-5034-552; Fax: +39-025-5034-550
| | - Paolo Molinari
- Unit of Nephrology, Dialysis and Kidney Transplantation, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, 20122 Milan, Italy
| | - Giuseppe Castellano
- Unit of Nephrology, Dialysis and Kidney Transplantation, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, 20122 Milan, Italy
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, 20122 Milan, Italy
| | - Nicholas Walter Delfrate
- Unit of Nephrology, Dialysis and Kidney Transplantation, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, 20122 Milan, Italy
| | - Massimiliano Marco Corsi Romanelli
- Department of Biomedical Science for Health, Università degli Studi di Milano, 20133 Milan, Italy
- Service of Laboratory Medicine1-Clinical Pathology, IRCCS Policlinico San Donato, San Donato Milanese, 20097 Milan, Italy
| | - Simone Vettoretti
- Unit of Nephrology, Dialysis and Kidney Transplantation, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico di Milano, 20122 Milan, Italy
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Perkins RK, van Vliet S, Miranda ER, Fuller KNZ, Beisswenger PJ, Wilund KR, Paluska SA, Burd NA, Haus JM. Advanced Glycation End Products and Inflammatory Cytokine Profiles in Maintenance Hemodialysis Patients After the Ingestion of a Protein-Dense Meal. J Ren Nutr 2023; 33:181-192. [PMID: 34923111 PMCID: PMC10580815 DOI: 10.1053/j.jrn.2021.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 11/11/2021] [Accepted: 11/28/2021] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVE The goal of this investigation was to evaluate circulating and skeletal muscle inflammatory biomarkers between maintenance hemodialysis (MHD) and demographic-matched control subjects (CON) before and after ingestion of a protein-rich meal. DESIGN AND METHODS CON (n = 8; 50 ± 2 years; 31 ± 1 kg/m2) and MHD patients (n = 8; 56 ± 5 years; 32 ± 2 kg/m2) underwent a basal blood draw and muscle biopsy and serial blood draws after the ingestion of a mixed meal on a nondialysis day. Plasma advanced glycation end products (AGEs) and markers of oxidation were assessed via liquid chromatography-tandem mass spectrometry before and after the meal (+240 min). Circulating inflammatory cytokines and soluble receptors for AGE (sRAGE) isoforms (endogenous secretory RAGEs and cleaved RAGEs) were determined before and after the meal (+240 min). Basal muscle was probed for inflammatory cytokines and protein expression of related signaling components (RAGE, Toll-like receptor 4, oligosaccharyltransferase subunit 48, TIR-domain-containing adapter-inducing interferon-β, total IκBα, and pIκBα). RESULTS Basal circulating AGEs were 7- to 343-fold higher (P < .001) in MHD than those in CON, but only MG-H1 increased in CON after the meal (P < .001). There was a group effect (MHD > CON) for total sRAGEs (P = .02) and endogenous secretory RAGEs (P < .001) and a trend for cleaved RAGEs (P=.09), with no meal effect. In addition, there was a group effect (MHD < CON; P < .05) for circulating fractalkine, interleukin (IL)10, IL17A, and IL1β and a trend (P < .10) for IL6 and macrophage inflammatory protein 1 alpha, whereas tumor necrosis factor alpha was higher in MHD (P < .001). In muscle, Toll-like receptor 4 (P = .03), TIR-domain-containing adapter-inducing interferon-β (P = .002), and oligosaccharyltransferase subunit 48 (P = .02) expression was lower in MHD than that in CON, whereas IL6 was higher (P = .01) and IL8 (P = .08) tended to be higher in MHD. CONCLUSION Overall, MHD exhibited an exaggerated, circulating, and skeletal muscle inflammatory biomarker environment, and the meal did not appreciably affect the inflammatory status.
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Affiliation(s)
- Ryan K Perkins
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan
| | - Stephan van Vliet
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Edwin R Miranda
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan
| | | | | | - Kenneth R Wilund
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Scott A Paluska
- Department of Family Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Nicholas A Burd
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Jacob M Haus
- School of Kinesiology, University of Michigan, Ann Arbor, Michigan.
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Fernandes ACF, Melo JB, Genova VM, Santana ÁL, Macedo G. Phytochemicals as Potential Inhibitors of Advanced Glycation End Products: Health Aspects and Patent Survey. RECENT ADVANCES IN FOOD, NUTRITION & AGRICULTURE 2022; 13:3-16. [PMID: 34053432 DOI: 10.2174/2212798412666210528130001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 02/17/2021] [Accepted: 03/06/2021] [Indexed: 12/29/2022]
Abstract
BACKGROUND The glycation of proteins and lipids synthesizes the advanced glycation end products (AGEs), i.e., substances that irreversibly damage macromolecules present in tissues and organs, which contribute to the impairment of biological functions. For instance, the accumulation of AGEs induces oxidative stress, the inflammatory responses, and consequently the on set/worsening of diseases, including obesity, asthma, cognitive impairment, and cancer. There is a current demand on natural and low-cost sources of anti-AGE agents. As a result, food phytochemicals presented promising results to inhibit glycation and consequently, the formation of AGEs. OBJECTIVE Here we describe how the AGEs are present in food via Maillard reaction and in organs via natural aging, as well as the effects of AGEs on the worsening of diseases. Also we described the methods used to detect AGEs in samples, and the current findings on the use of phytochemicals (phenolic compounds, phytosterols, carotenoids, terpenes and vitamins) as natural therapeuticals to inhibit health damages via inhibition of AGEs in vitro and in vivo. METHODS This manuscript reviewed publications available in the PubMed and Science Direct databases dated from the last 20 years on the uses of phytochemicals for the inhibition of AGEs. Recent patents on the use of anti-AGEs drugs were reviewed with the use of Google Advanced Patents database. RESULTS AND DISCUSSION There is no consensus about which concentration of AGEs in blood serum should not be hazardous to the health of individuals. Food phytochemicals derived from agroindustry wastes, including peanut skins, and the bagasses derived from citrus and grapes are promising anti-AGEs agents via scavenging of free radicals, metal ions, the suppression of metabolic pathways that induces inflammation, the activation of pathways that promote antioxidant defense, and the blocking of AGE connection with the receptor for advanced glycation endproducts (RAGE). CONCLUSION Phytochemicals derived from agroindustry are promising anti-AGEs, which can be included to replace synthetic drugs to inhibit AGE formation, and consequently to act as therapeutical strategy to prevent and treat diseases caused by AGEs, including diabetes, ovarian cancer, osteoporosis, and Alzheimer's disease.
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Affiliation(s)
- Annayara C F Fernandes
- Bioprocesses Laboratory, Food and Nutrition Department, School of Food Engineering, University of Campinas, UNICAMP, Campinas, SP, Brazil, Cidade Universitária "ZeferinoVaz", Rua Monteiro Lobato, 80, Campinas 13083-862, Brazil
| | - Jeane B Melo
- Bioprocesses Laboratory, Food and Nutrition Department, School of Food Engineering, University of Campinas, UNICAMP, Campinas, SP, Brazil, Cidade Universitária "ZeferinoVaz", Rua Monteiro Lobato, 80, Campinas 13083-862, Brazil
| | - Vanize M Genova
- Bioprocesses Laboratory, Food and Nutrition Department, School of Food Engineering, University of Campinas, UNICAMP, Campinas, SP, Brazil, Cidade Universitária "ZeferinoVaz", Rua Monteiro Lobato, 80, Campinas 13083-862, Brazil
| | - Ádina L Santana
- Bioprocesses Laboratory, Food and Nutrition Department, School of Food Engineering, University of Campinas, UNICAMP, Campinas, SP, Brazil, Cidade Universitária "ZeferinoVaz", Rua Monteiro Lobato, 80, Campinas 13083-862, Brazil.,264 Food Innovation Center, Nebraska Innovation Campus, University of Nebraska-Lincoln, 1901 N 21st street, Lincoln, NE, USA
| | - Gabriela Macedo
- Bioprocesses Laboratory, Food and Nutrition Department, School of Food Engineering, University of Campinas, UNICAMP, Campinas, SP, Brazil, Cidade Universitária "ZeferinoVaz", Rua Monteiro Lobato, 80, Campinas 13083-862, Brazil
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Jiang J, Zhao C, Han T, Shan H, Cui G, Li S, Xie Z, Wang J. Advanced Glycation End Products, Bone Health, and Diabetes
Mellitus. Exp Clin Endocrinol Diabetes 2022; 130:671-677. [DOI: 10.1055/a-1861-2388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
AbstractAdvanced glycation end products (AGEs), the compounds resulting from the
non-enzymatic glycosylation between reducing sugars and proteins, are derived
from food or produced de novo. Over time, more and more endogenous and
exogenous AGEs accumulate in various organs such as the liver, kidneys, muscle,
and bone, threatening human health. Among these organs, bone is most widely
reported. AGEs accumulating in bone reduce bone strength by participating in
bone structure formation and breaking bone homeostasis by binding their
receptors to alter the proliferation, differentiation, and apoptosis of cells
involved in bone remodeling. In this review, we summarize the research about the
effects of AGEs on bone health and highlight their associations with bone health
in diabetes patients to provide some clues toward the discovery of new treatment
and prevention strategies for bone-related diseases caused by AGEs.
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Affiliation(s)
- Jingjing Jiang
- School of Tourism and Cuisine, Yangzhou University, 196 Huayang West
Road, Yangzhou, 225127, Jiangsu, P. R. China
| | - Changyu Zhao
- School of Tourism and Cuisine, Yangzhou University, 196 Huayang West
Road, Yangzhou, 225127, Jiangsu, P. R. China
| | - Tingting Han
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui
Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, P. R.
China
| | - Hongyan Shan
- School of Tourism and Cuisine, Yangzhou University, 196 Huayang West
Road, Yangzhou, 225127, Jiangsu, P. R. China
| | - Guiyou Cui
- School of Tourism and Cuisine, Yangzhou University, 196 Huayang West
Road, Yangzhou, 225127, Jiangsu, P. R. China
| | - Songnan Li
- Joint International Research Laboratory of Agriculture and Agri-Product
Safety, the Ministry of Education of China, Institutes of Agricultural Science
and Technology Development, Yangzhou University, 48 Wenhui East Road, Yangzhou,
225009, Jiangsu, P. R. China
| | - Zhongwen Xie
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui
Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, P. R.
China
| | - Jun Wang
- School of Tourism and Cuisine, Yangzhou University, 196 Huayang West
Road, Yangzhou, 225127, Jiangsu, P. R. China
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui
Agricultural University, 130 Changjiang West Road, Hefei, 230036, Anhui, P. R.
China
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9
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Stephen SJ, Bailey S, D'Erminio DN, Krishnamoorthy D, Iatridis JC, Vashishth D. Bone matrix quality in a developing high-fat diet mouse model is altered by RAGE deletion. Bone 2022; 162:116470. [PMID: 35718325 PMCID: PMC9296598 DOI: 10.1016/j.bone.2022.116470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 06/07/2022] [Accepted: 06/07/2022] [Indexed: 11/20/2022]
Abstract
Overweightness and obesity in adolescents are epidemics linked to chronic low-grade inflammation and elevated fracture risk. The increased fracture risk observed in overweight/obese adolescence contrasts the traditional concept that high body mass is protective against fracture, and thus highlights the need to determine why weight gain becomes detrimental to fracture during growth and maturity. The Receptor for Advanced Glycation End products (RAGE) is a central inflammatory regulator that can influence bone metabolism. It remains unknown how RAGE removal impacts skeletal fragility in overweightness/obesity, and whether increased fracture risk in adolescents could result from low-grade inflammation deteriorating bone quality. We characterized the multiscale structural, mechanical, and chemical properties of tibiae extracted from adolescent C57BL/6J (WT) and RAGE null (KO) mice fed either low-fat (LF) or high-fat (HF) diet for 12 weeks starting at 6 weeks of age using micro-computed tomography, strength, Raman spectroscopy, and nanoindentation. Overweight/obese WT HF mice possessed degraded mineral-crystal quality and increased matrix glycoxidation in the form of pentosidine and carboxymethyl-lysine, with HF diet in females only showing reduced cortical surface expansion and TMD independently of RAGE ablation. Furthermore, in contrast to males, HF diet in females led to more material damage and plastic deformation. RAGE KO mitigated glycoxidative matrix accumulation, preserved mineral quantity, and led to increased E/H ratio in females. Taken together, these results highlight the complex, multi-scale and sex-dependent relationships between bone quality and function under overweightness, and identifies RAGE-controlled glycoxidation as a target to potentially preserve matrix quality and mechanical integrity.
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Affiliation(s)
- Samuel J Stephen
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Stacyann Bailey
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Danielle N D'Erminio
- Leni and Peter W. May Department of Orthopaedics, Ichan School of Medicine at Mount Sinai, New York, NY, USA
| | - Divya Krishnamoorthy
- Leni and Peter W. May Department of Orthopaedics, Ichan School of Medicine at Mount Sinai, New York, NY, USA
| | - James C Iatridis
- Leni and Peter W. May Department of Orthopaedics, Ichan School of Medicine at Mount Sinai, New York, NY, USA
| | - Deepak Vashishth
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies Rensselaer Polytechnic Institute, Troy, NY, USA.
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10
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Advanced Glycation End Products (AGEs) and Chronic Kidney Disease: Does the Modern Diet AGE the Kidney? Nutrients 2022; 14:nu14132675. [PMID: 35807857 PMCID: PMC9268915 DOI: 10.3390/nu14132675] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 12/13/2022] Open
Abstract
Since the 1980s, chronic kidney disease (CKD) affecting all ages has increased by almost 25%. This increase may be partially attributable to lifestyle changes and increased global consumption of a “western” diet, which is typically energy dense, low in fruits and vegetables, and high in animal protein and ultra-processed foods. These modern food trends have led to an increase in the consumption of advanced glycation end products (AGEs) in conjunction with increased metabolic dysfunction, obesity and diabetes, which facilitates production of endogenous AGEs within the body. When in excess, AGEs can be pathological via both receptor-mediated and non-receptor-mediated pathways. The kidney, as a major site for AGE clearance, is particularly vulnerable to AGE-mediated damage and increases in circulating AGEs align with risk of CKD and all-cause mortality. Furthermore, individuals with significant loss of renal function show increased AGE burden, particularly with uraemia, and there is some evidence that AGE lowering via diet or pharmacological inhibition may be beneficial for CKD. This review discusses the pathways that drive AGE formation and regulation within the body. This includes AGE receptor interactions and pathways of AGE-mediated pathology with a focus on the contribution of diet on endogenous AGE production and dietary AGE consumption to these processes. We then analyse the contribution of AGEs to kidney disease, the evidence for dietary AGEs and endogenously produced AGEs in driving pathogenesis in diabetic and non-diabetic kidney disease and the potential for AGE targeted therapies in kidney disease.
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11
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Ramasamy R, Shekhtman A, Schmidt AM. The RAGE/DIAPH1 Signaling Axis & Implications for the Pathogenesis of Diabetic Complications. Int J Mol Sci 2022; 23:ijms23094579. [PMID: 35562970 PMCID: PMC9102165 DOI: 10.3390/ijms23094579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/13/2022] [Accepted: 04/17/2022] [Indexed: 02/08/2023] Open
Abstract
Increasing evidence links the RAGE (receptor for advanced glycation end products)/DIAPH1 (Diaphanous 1) signaling axis to the pathogenesis of diabetic complications. RAGE is a multi-ligand receptor and through these ligand-receptor interactions, extensive maladaptive effects are exerted on cell types and tissues targeted for dysfunction in hyperglycemia observed in both type 1 and type 2 diabetes. Recent evidence indicates that RAGE ligands, acting as damage-associated molecular patterns molecules, or DAMPs, through RAGE may impact interferon signaling pathways, specifically through upregulation of IRF7 (interferon regulatory factor 7), thereby heralding and evoking pro-inflammatory effects on vulnerable tissues. Although successful targeting of RAGE in the clinical milieu has, to date, not been met with success, recent approaches to target RAGE intracellular signaling may hold promise to fill this critical gap. This review focuses on recent examples of highlights and updates to the pathobiology of RAGE and DIAPH1 in diabetic complications.
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Affiliation(s)
- Ravichandran Ramasamy
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA;
| | - Alexander Shekhtman
- Department of Chemistry, The State University of New York at Albany, Albany, NY 12222, USA;
| | - Ann Marie Schmidt
- Diabetes Research Program, Department of Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA;
- Correspondence:
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12
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Advanced Glycation End-Products (AGEs): Formation, Chemistry, Classification, Receptors, and Diseases Related to AGEs. Cells 2022; 11:cells11081312. [PMID: 35455991 PMCID: PMC9029922 DOI: 10.3390/cells11081312] [Citation(s) in RCA: 165] [Impact Index Per Article: 82.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/08/2022] [Accepted: 04/11/2022] [Indexed: 01/27/2023] Open
Abstract
Advanced glycation end-products (AGEs) constitute a non-homogenous, chemically diverse group of compounds formed either exogeneously or endogeneously on the course of various pathways in the human body. In general, they are formed non-enzymatically by condensation between carbonyl groups of reducing sugars and free amine groups of nucleic acids, proteins, or lipids, followed by further rearrangements yielding stable, irreversible end-products. In the last decades, AGEs have aroused the interest of the scientific community due to the increasing evidence of their involvement in many pathophysiological processes and diseases, such as diabetes, cancer, cardiovascular, neurodegenerative diseases, and even infection with the SARS-CoV-2 virus. They are recognized by several cellular receptors and trigger many signaling pathways related to inflammation and oxidative stress. Despite many experimental research outcomes published recently, the complexity of their engagement in human physiology and pathophysiological states requires further elucidation. This review focuses on the receptors of AGEs, especially on the structural aspects of receptor-ligand interaction, and the diseases in which AGEs are involved. It also aims to present AGE classification in subgroups and to describe the basic processes leading to both exogeneous and endogeneous AGE formation.
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13
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Advanced Glycation End Products: A Sweet Flavor That Embitters Cardiovascular Disease. Int J Mol Sci 2022; 23:ijms23052404. [PMID: 35269546 PMCID: PMC8910157 DOI: 10.3390/ijms23052404] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 12/24/2022] Open
Abstract
Epidemiological studies demonstrate the role of early and intensive glycemic control in the prevention of micro and macrovascular disease in both type 1 and type 2 diabetes mellitus (DM). Hyperglycemia elicits several pathways related to the etiopathogenesis of cardiovascular disease (CVD), including the generation of advanced glycation end products (AGEs). In this review, we revisit the role played by AGEs in CVD based in clinical trials and experimental evidence. Mechanistic aspects concerning the recognition of AGEs by the advanced glycosylation end product-specific receptor (AGER) and its counterpart, the dolichyl-diphosphooligosaccharide-protein glycosyltransferase (DDOST) and soluble AGER are discussed. A special focus is offered to the AGE-elicited pathways that promote cholesterol accumulation in the arterial wall by enhanced oxidative stress, inflammation, endoplasmic reticulum stress and impairment in the reverse cholesterol transport (RCT).
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14
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Laget J, Duranton F, Argilés À, Gayrard N. Renal insufficiency and chronic kidney disease – Promotor or consequence of pathological post-translational modifications. Mol Aspects Med 2022; 86:101082. [DOI: 10.1016/j.mam.2022.101082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/27/2022] [Accepted: 02/03/2022] [Indexed: 12/12/2022]
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15
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Maleki V, Foroumandi E, Hajizadeh-Sharafabad F, Kheirouri S, Alizadeh M. The effect of resveratrol on advanced glycation end products in diabetes mellitus: a systematic review. Arch Physiol Biochem 2022; 128:253-260. [PMID: 32125189 DOI: 10.1080/13813455.2019.1673434] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Advanced glycation end products (AGEs) lead to chronic oxidative stress and inflammation, which in turn augment diabetes complications. Resveratrol plays a potential role in relation to diabetes due to improving of hyperglycemia, oxidative stress, and inflammation. The aim of this review was to evaluate the scientific literature to identify the impacts of resveratrol on the accumulation of AGEs. The literature was searched in the online databases, viz. PubMed, SCOPUS, Embase, ProQuest, and Google Scholar until May 2019. From a total of 338 retrieved articles, 10 papers were eligible for the present analysis. Except one clinical trial, all studies were conducted on animals. All the included studies, except one, showed inhibitory effects of resveratrol on the accumulation of AGE or receptor for AGEs. The findings indicate that resveratrol is a potential protective agent against the accumulation of AGEs. There is, however, the need for future studies to investigate this effect on human.
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Affiliation(s)
- Vahid Maleki
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Elaheh Foroumandi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fatemeh Hajizadeh-Sharafabad
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sorayya Kheirouri
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Alizadeh
- Department of Clinical Nutrition, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
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16
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Felicetti F, Aimaretti E, Dal Bello F, Gatti F, Godono A, Saba F, Einaudi G, Collino M, Fagioli F, Aragno M, Brignardello E. Advanced glycation end products and their related signaling cascades in adult survivors of childhood Hodgkin lymphoma: A possible role in the onset of late complications. Free Radic Biol Med 2022; 178:76-82. [PMID: 34856327 DOI: 10.1016/j.freeradbiomed.2021.11.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/23/2021] [Accepted: 11/28/2021] [Indexed: 12/12/2022]
Abstract
Hodgkin lymphoma (HL) is today one of the most curable pediatric cancers. Despite survival rates now exceeding 90%, survivors of pediatric HL are still at higher risk to develop late effects of cancer therapy. Premature aging has been proposed as a paradigm to explain the onset of long-term complications in these subjects. High levels of advanced glycation end products (AGEs), together with chronic inflammation and oxidative unbalance, have been shown to be among the main factors contributing to aging. The present study aims to evaluate glycoxydation, inflammatory status, and oxidative stress in plasma and peripheral blood mononuclear cells (PBMC) obtained from 20 adult survivors of pediatric HL and 40 age- and sex-matched healthy controls. After the isolation of PBMC and the collection of plasma, we performed the analyses of gene expression by qRT-PCR and measured inflammatory and oxidative-stress markers. AGEs plasma levels, expressed as Nϵ-carboxymethyl-lysine and methylglyoxal hydroimidazolone, were markedly higher in HL survivors than in healthy subjects. HL survivors also showed a condition of higher oxidative stress, as demonstrated by an increased expression of NADPH oxidase on PBMC. Antioxidant defenses, evaluated in terms of alpha-tocopherol, GSSG/GSH ratio and catalase plasma levels, were strongly impaired in survivors. This pro-oxidative condition led to the over-expression of both NLRP3 and NFkB genes in PBMC and, consequently, to increased plasma levels of interleukin(IL)-1β and IL-6. Finally, the expression of the receptors for AGEs in PBMC confirmed the dysregulated AGE pathways. Data show AGEs accumulation in survivors of pediatric HL. The consequent activation of the receptor for AGEs leads to the persistent activation of intracellular signaling toward inflammation. These results suggest that the co-existence of AGEs accumulation, unbalanced oxidative status, and inflammation could play a role in the onset of late complications in HL survivors.
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Affiliation(s)
- Francesco Felicetti
- Transition Unit for Childhood Cancer Survivors, Città della Salute e della Scienza Hospital, Turin, Italy
| | - Eleonora Aimaretti
- General Pathology Unit, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Federica Dal Bello
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Italy
| | - Filippo Gatti
- Transition Unit for Childhood Cancer Survivors, Città della Salute e della Scienza Hospital, Turin, Italy
| | - Alessandro Godono
- Department of Public Health and Pediatrics, University of Torino, Turin, Italy
| | - Francesca Saba
- Department of Medical Science, University of Turin, Turin, Italy
| | - Giacomo Einaudi
- Pharmacology Unit, School of Pharmacy, University of Camerino, Camerino, Italy
| | - Massimo Collino
- Department of Neurosciences "Rita Levi Montalcini" University of Turin, Turin, Italy
| | - Franca Fagioli
- Department of Public Health and Pediatrics, University of Torino, Turin, Italy; Division of Paediatric Onco-Haematology, Stem Cell Transplantation and Cellular Therapy, Città della Salute e della Scienza Hospital, Turin, Italy
| | - Manuela Aragno
- General Pathology Unit, Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Enrico Brignardello
- Transition Unit for Childhood Cancer Survivors, Città della Salute e della Scienza Hospital, Turin, Italy.
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Hernandez-Castillo C, Shuck SC. Diet and Obesity-Induced Methylglyoxal Production and Links to Metabolic Disease. Chem Res Toxicol 2021; 34:2424-2440. [PMID: 34851609 DOI: 10.1021/acs.chemrestox.1c00221] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The obesity rate in the United States is 42.4% and has become a national epidemic. Obesity is a complex condition that is influenced by socioeconomic status, ethnicity, genetics, age, and diet. Increased consumption of a Western diet, one that is high in processed foods, red meat, and sugar content, is associated with elevated obesity rates. Factors that increase obesity risk, such as socioeconomic status, also increase consumption of a Western diet because of a limited access to healthier options and greater affordability of processed foods. Obesity is a public health threat because it increases the risk of several pathologies, including atherosclerosis, diabetes, and cancer. The molecular mechanisms linking obesity to disease onset and progression are not well understood, but a proposed mechanism is physiological changes caused by altered lipid peroxidation, glycolysis, and protein metabolism. These metabolic pathways give rise to reactive molecules such as the abundant electrophile methylglyoxal (MG), which covalently modifies nucleic acids and proteins. MG-adducts are associated with obesity-linked pathologies and may have potential for biomonitoring to determine the risk of disease onset and progression. MG-adducts may also play a role in disease progression because they are mutagenic and directly impact protein stability and function. In this review, we discuss how obesity drives metabolic alterations, how these alterations lead to MG production, the association of MG-adducts with disease, and the potential impact of MG-adducts on cellular function.
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Affiliation(s)
- Carlos Hernandez-Castillo
- Department of Diabetes and Cancer Metabolism, Beckman Research Institute of City of Hope, Duarte, California 91010, United States
| | - Sarah C Shuck
- Department of Diabetes and Cancer Metabolism, Beckman Research Institute of City of Hope, Duarte, California 91010, United States
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18
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Wächter K, Navarrete Santos A, Großkopf A, Baldensperger T, Glomb MA, Szabó G, Simm A. AGE-Rich Bread Crust Extract Boosts Oxidative Stress Interception via Stimulation of the NRF2 Pathway. Nutrients 2021; 13:nu13113874. [PMID: 34836129 PMCID: PMC8622267 DOI: 10.3390/nu13113874] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 10/26/2021] [Accepted: 10/28/2021] [Indexed: 12/30/2022] Open
Abstract
Advanced glycation end products (AGEs) result from a non-enzymatic reaction of proteins with reactive carbohydrates. Heat-processed food, such as bread, contains high amounts of AGEs. The activation of the NF-κB signaling pathway by bread crust extract (BCE) is well understood. However, it is largely unknown whether NRF2, the master regulator of oxidative stress resistance in mammalian cells, is affected by BCE. We have investigated the molecular mechanisms by which BCE induces antioxidant gene expression in cellular models. Our data showed that soluble extracts from bread crust are capable of stimulating the NRF2 signaling pathway. Furthermore, NRF2 pathway activation was confirmed by microarray and reporter-cell analyses. QRT-PCR measurements and Western blot analyses indicated an induction of antioxidative genes such as HMOX1, GCLM and NQO1 upon BCE treatment. Moreover, BCE pretreated cells had a survival advantage compared to control cells when exposed to oxidative stress. BCE induces phosphorylation of AKT and ERK kinase in EA.hy926 cells. By mass spectrometry, several new, potentially active modifications in BCE were identified. Our findings indicate that BCE activates NRF2-dependent antioxidant gene expression, thus provoking a protection mechanism against oxidative stress-mediated tissue injury. Hence, BCE can be considered as functional food with antioxidative and cardioprotective potential.
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Affiliation(s)
- Kristin Wächter
- Department for Cardiac Surgery, University Hospital Halle (Saale), Martin-Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany; (A.G.); (G.S.); (A.S.)
- Correspondence: ; Tel.: +49-345-557-7068
| | - Alexander Navarrete Santos
- Center for Medical Basic Research, Martin-Luther-University Halle-Wittenberg, 06120 Halle (Saale), Germany;
| | - Anne Großkopf
- Department for Cardiac Surgery, University Hospital Halle (Saale), Martin-Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany; (A.G.); (G.S.); (A.S.)
| | - Tim Baldensperger
- German Institute of Human Nutrition Potsdam-Rehbrücke, 14558 Nuthetal, Germany;
- Institute of Chemistry, Food Chemistry, Martin-Luther-University Halle-Wittenberg, 06120 Halle (Saale), Germany;
| | - Marcus A. Glomb
- Institute of Chemistry, Food Chemistry, Martin-Luther-University Halle-Wittenberg, 06120 Halle (Saale), Germany;
| | - Gábor Szabó
- Department for Cardiac Surgery, University Hospital Halle (Saale), Martin-Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany; (A.G.); (G.S.); (A.S.)
| | - Andreas Simm
- Department for Cardiac Surgery, University Hospital Halle (Saale), Martin-Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany; (A.G.); (G.S.); (A.S.)
- Center for Medical Basic Research, Martin-Luther-University Halle-Wittenberg, 06120 Halle (Saale), Germany;
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Wouters K, Cento AS, Gaens KH, Teunissen M, Scheijen JLJM, Barutta F, Chiazza F, Collotta D, Aragno M, Gruden G, Collino M, Schalkwijk CG, Mastrocola R. Deletion of RAGE fails to prevent hepatosteatosis in obese mice due to impairment of other AGEs receptors and detoxifying systems. Sci Rep 2021; 11:17373. [PMID: 34462492 PMCID: PMC8405685 DOI: 10.1038/s41598-021-96859-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 08/10/2021] [Indexed: 02/07/2023] Open
Abstract
Advanced glycation endproducts (AGEs) are involved in several diseases, including NAFLD and NASH. RAGE is the main receptor mediating the pro-inflammatory signalling induced by AGEs. Therefore, targeting of RAGE has been proposed for prevention of chronic inflammatory diseases. However, the role of RAGE in the development of NAFLD and NASH remains poorly understood. We thus aimed to analyse the effect of obesity on AGEs accumulation, AGE-receptors and AGE-detoxification, and whether the absence of RAGE might improve hepatosteatosis and inflammation, by comparing the liver of lean control, obese (LeptrDb-/-) and obese RAGE-deficient (RAGE-/- LeptrDb-/-) mice. Obesity induced AGEs accumulation and RAGE expression with hepatosteatosis and inflammation in LeptrDb-/-, compared to lean controls. Despite the genetic deletion of RAGE in the LeptrDb-/- mice, high levels of intrahepatic AGEs were maintained accompanied by decreased expression of the protective AGE-receptor-1, impaired AGE-detoxifying system glyoxalase-1, and increased expression of the alternative AGE-receptor galectin-3. We also found sustained hepatosteatosis and inflammation as determined by persistent activation of the lipogenic SREBP1c and proinflammatory NLRP3 signalling pathways. Thus, RAGE targeting is not effective in the prevention of NAFLD in conditions of obesity, likely due to the direct liver specific crosstalk of RAGE with other AGE-receptors and AGE-detoxifying systems.
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Affiliation(s)
- Kristiaan Wouters
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, MUMC, Maastricht, Limburg The Netherlands ,grid.5012.60000 0001 0481 6099Cardiovascular Research Institute Maastricht, Maastricht, Limburg The Netherlands
| | - Alessia S. Cento
- grid.7605.40000 0001 2336 6580Department of Clinical and Biological Sciences, University of Turin, Corso Raffaello 30, 10125 Turin, Italy
| | - Katrien H. Gaens
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, MUMC, Maastricht, Limburg The Netherlands ,grid.5012.60000 0001 0481 6099Cardiovascular Research Institute Maastricht, Maastricht, Limburg The Netherlands
| | - Margee Teunissen
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, MUMC, Maastricht, Limburg The Netherlands
| | - Jean L. J. M. Scheijen
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, MUMC, Maastricht, Limburg The Netherlands ,grid.5012.60000 0001 0481 6099Cardiovascular Research Institute Maastricht, Maastricht, Limburg The Netherlands
| | - Federica Barutta
- grid.7605.40000 0001 2336 6580Department of Medical Sciences, University of Turin, Turin, Italy
| | - Fausto Chiazza
- grid.16563.370000000121663741Department of Drug Sciences, University of Eastern Piedmont, Novara, Italy
| | - Debora Collotta
- grid.7605.40000 0001 2336 6580Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Manuela Aragno
- grid.7605.40000 0001 2336 6580Department of Clinical and Biological Sciences, University of Turin, Corso Raffaello 30, 10125 Turin, Italy
| | - Gabriella Gruden
- grid.7605.40000 0001 2336 6580Department of Medical Sciences, University of Turin, Turin, Italy
| | - Massimo Collino
- grid.7605.40000 0001 2336 6580Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Casper G. Schalkwijk
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, MUMC, Maastricht, Limburg The Netherlands ,grid.5012.60000 0001 0481 6099Cardiovascular Research Institute Maastricht, Maastricht, Limburg The Netherlands
| | - Raffaella Mastrocola
- grid.412966.e0000 0004 0480 1382Department of Internal Medicine, MUMC, Maastricht, Limburg The Netherlands ,grid.7605.40000 0001 2336 6580Department of Clinical and Biological Sciences, University of Turin, Corso Raffaello 30, 10125 Turin, Italy
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20
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Wu XQ, Zhang DD, Wang YN, Tan YQ, Yu XY, Zhao YY. AGE/RAGE in diabetic kidney disease and ageing kidney. Free Radic Biol Med 2021; 171:260-271. [PMID: 34019934 DOI: 10.1016/j.freeradbiomed.2021.05.025] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/11/2021] [Accepted: 05/15/2021] [Indexed: 02/07/2023]
Abstract
Diabetic kidney disease (DKD) is the primary cause of chronic kidney disease that inevitably progress to end-stage kidney disease. Intervention strategies such as blood glucose control is effective for preventing DKD, but many patients with DKD still reach end-stage kidney disease. Although comprehensive mechanisms shed light on the progression of DKD, the most compelling evidence has highlighted that hyperglycemia-related advanced glycation end products (AGEs) formation plays a central role in the pathogenesis of DKD. Pathologically, accumulation of AGEs-mediated receptor for AGEs (RAGE) triggers oxidative stress and inflammation, which is the major deleterious effect of AGEs in host and intestinal microenvironment of diabetic and ageing conditions. The activation of AGEs-mediated RAGE could evoke nicotinamide adenine dinucleotide phosphate oxidase-induced reactive oxygen and nitrogen species production and subsequently give rise to oxidative stress in DKD and ageing kidney. Therefore, targeting RAGE with its ligands mediated oxidative stress and chronic inflammation is considered as an additional intervention strategy for DKD and ageing kidney. In this review, we summarize AGEs/RAGE-mediated oxidative stress and inflammation signaling pathways in DKD and ageing kidney, discussing opportunities and challenges of targeting at AGEs/RAGE-induced oxidative stress that could hold the promising potential approach for improving DKD and ageing kidney.
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Affiliation(s)
- Xia-Qing Wu
- Faculty of Life Science & Medicine, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi, 710069, China
| | - Dan-Dan Zhang
- Faculty of Life Science & Medicine, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi, 710069, China
| | - Yan-Ni Wang
- Faculty of Life Science & Medicine, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi, 710069, China
| | - Yue-Qi Tan
- Faculty of Life Science & Medicine, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi, 710069, China
| | - Xiao-Yong Yu
- Department of Nephrology, Shaanxi Traditional Chinese Medicine Hospital, No. 2 Xihuamen, Xi'an, Shaanxi, 710003, China.
| | - Ying-Yong Zhao
- Faculty of Life Science & Medicine, Northwest University, No. 229 Taibai North Road, Xi'an, Shaanxi, 710069, China.
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21
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Chen Y, Guo TL. Dietary advanced glycation end-products elicit toxicological effects by disrupting gut microbiome and immune homeostasis. J Immunotoxicol 2021; 18:93-104. [PMID: 34436982 PMCID: PMC9885815 DOI: 10.1080/1547691x.2021.1959677] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The aging immune system is characterized by a low-grade chronic systemic inflammatory state ("inflammaging") marked by elevated serum levels of inflammatory molecules such as interleukin (IL)-6 and C-reactive protein (CRP). These inflammatory markers were also reported to be strong predictors for the development/severity of Type 2 diabetes, obesity, and COVID-19. The levels of these markers have been positively associated with those of advanced glycation end-products (AGEs) generated via non-enzymatic glycation and oxidation of proteins and lipids during normal aging and metabolism. Based on the above observations, it is clinically important to elucidate how dietary AGEs modulate inflammation and might thus increase the risk for aging-exacerbated diseases. The present narrative review discusses the potential pro-inflammatory properties of dietary AGEs with a focus on the inflammatory mediators CRP, IL-6 and ferritin, and their relations to aging in general and Type 2 diabetes in particular. In addition, underlying mechanisms - including those related to gut microbiota and the receptors for AGEs, and the roles AGEs might play in affecting physiologies of the healthy elderly, obese individuals, and diabetics are discussed in regard to any greater susceptibility to COVID-19.
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Affiliation(s)
- Yingjia Chen
- Department of Biomedical Sciences, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Tai L. Guo
- Department of Biomedical Sciences, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
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22
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Oliveira JS, de Almeida C, de Souza ÂMN, da Cruz LD, Alfenas RCG. Effect of dietary advanced glycation end-products restriction on type 2 diabetes mellitus control: a systematic review. Nutr Rev 2021; 80:294-305. [PMID: 34010398 DOI: 10.1093/nutrit/nuab020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
CONTEXT Reducing dietary advanced glycation end-products (AGEs) may favor diabetes control. OBJECTIVE Critically analyze studies about the effect of dietary AGEs restriction on inflammation, oxidative stress, and glycemic control in patients with type 2 diabetes mellitus (DM2). DATA SOURCE This systematic review was conducted according to PRISMA methodology. The PubMed, Web of Science, LILACS, and Cochrane Library databases were searched, using the terms "type 2 diabetes," "advanced glycation end products" and "diet." DATA EXTRACTION Seven original studies were included in this review. The duration of the studies ranged from 1 day to 16 weeks. All extracted data were compiled, compared, and critically analyzed. DATA ANALYSIS Glycemic variables were considered the primary outcomes. The secondary outcomes were glycation, inflammatory, and oxidative stress markers. CONCLUSION Although serum insulin, homeostasis model assessment of insulin resistance, and glycated hemoglobin values were lower after the consumption of AGEs restricted diets in most studies, there was a lack of unanimity regarding dietary AGEs' positive effect on inflammation, oxidative stress, and blood glucose. SYSTEMATIC REVIEW REGISTRATION PROSPERO registration no. CRD42020152640.
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Affiliation(s)
- Julia S Oliveira
- J.S. Oliveira, C. Almeida, A.M.N. Souza, L.D. Cruz, and R.C.G. Alfenas are with Departamento de Nutrição e Saúde, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Carolina de Almeida
- J.S. Oliveira, C. Almeida, A.M.N. Souza, L.D. Cruz, and R.C.G. Alfenas are with Departamento de Nutrição e Saúde, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Ângela M N de Souza
- J.S. Oliveira, C. Almeida, A.M.N. Souza, L.D. Cruz, and R.C.G. Alfenas are with Departamento de Nutrição e Saúde, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Luciana D da Cruz
- J.S. Oliveira, C. Almeida, A.M.N. Souza, L.D. Cruz, and R.C.G. Alfenas are with Departamento de Nutrição e Saúde, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Rita C G Alfenas
- J.S. Oliveira, C. Almeida, A.M.N. Souza, L.D. Cruz, and R.C.G. Alfenas are with Departamento de Nutrição e Saúde, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
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Ramya R, Coral K, Bharathidevi SR. RAGE silencing deters CML-AGE induced inflammation and TLR4 expression in endothelial cells. Exp Eye Res 2021; 206:108519. [PMID: 33639133 DOI: 10.1016/j.exer.2021.108519] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 02/02/2021] [Accepted: 02/15/2021] [Indexed: 12/26/2022]
Abstract
The Nε-(carboxymethyl)lysine (CML), the predominant advanced glycation end products (AGEs) in diabetes and its RAGE induced cytokine release has been well explored. But the CML mediated multiple AGEs receptor expression is still not understood and the role played by RAGE silencing in modulating CML generated pro-inflammatory cytokines in micro and macrovascular endothelial cells is yet to be studied. HUVEC and HREC cells were exposed with CML for 24 h. RAGE, AGER1, AGER2, Gal-3, TLR4, TLR2, CD36, FEEL-1, FEEL-2, and chemokine HMGB1 were quantified by either qPCR/western blotting. The receptor's expression was also determined in control vs diabetic retina. Expression of pro-inflammatory genes, ROS, and mitochondrial membrane potential change were assessed using ELISA, DCFDA, and JC-1 method respectively. RAGE expression was silenced either by Si-RAGE or neutralising antibody with anti-RAGE and expression of other AGE receptors, adaptors, and signalling pathway were studied compared with Si-Control. CML activated RAGE, TLR4, HMGB1(p < 0.001) and Gal-3 (p < 0.05) expression in both micro and macro vascular cells. Cadaveric diabetic retinal tissues also showed increased expression of RAGE, TLR4 and HMGB1 (p < 0.05). RAGE silencing significantly reduced TLR4, HMGB1 (p < 0.05) expression and inhibited the phosphorylation of NFκB and ERK1/2 in both these cells. The TLR4 adaptors MyD88 and TIRAP (p < 0.05) showed down regulation on RAGE silencing. This study shows CML induces AGE receptors expression as observed in diabetic retina and RAGE silencing down regulated TLR4 signalling and cytokine release by partly modulating TLR4 adaptors which needs further validation. From this study we speculate targeting the TLR4 adaptors like MyD88 and TIRAP can be a potential therapeutic target for reducing diabetic induced vascular complications.
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Affiliation(s)
- Ravi Ramya
- R.S. Mehta Jain Department of Biochemistry and Cell Biology, KBIRVO, Vision Research Foundation, Sankara Nethralaya, Chennai, 600006, India; School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| | - Karunakaran Coral
- R.S. Mehta Jain Department of Biochemistry and Cell Biology, KBIRVO, Vision Research Foundation, Sankara Nethralaya, Chennai, 600006, India
| | - Subramaniam Rajesh Bharathidevi
- R.S. Mehta Jain Department of Biochemistry and Cell Biology, KBIRVO, Vision Research Foundation, Sankara Nethralaya, Chennai, 600006, India.
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24
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Dehnad A, Fan W, Jiang JX, Fish SR, Li Y, Das S, Mozes G, Wong KA, Olson KA, Charville GW, Ali M, Török NJ. AGER1 downregulation associates with fibrosis in nonalcoholic steatohepatitis and type 2 diabetes. J Clin Invest 2021; 130:4320-4330. [PMID: 32657776 DOI: 10.1172/jci133051] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 05/05/2020] [Indexed: 12/25/2022] Open
Abstract
Type 2 diabetes is clinically associated with progressive necroinflammation and fibrosis in nonalcoholic steatohepatitis (NASH). Advanced glycation end-products (AGEs) accumulate during prolonged hyperglycemia, but the mechanistic pathways that lead to accelerated liver fibrosis have not been well defined. In this study, we show that the AGEs clearance receptor AGER1 was downregulated in patients with NASH and diabetes and in our NASH models, whereas the proinflammatory receptor RAGE was induced. These findings were associated with necroinflammatory, fibrogenic, and pro-oxidant activity via the NADPH oxidase 4. Inhibition of AGEs or RAGE deletion in hepatocytes in vivo reversed these effects. We demonstrate that dysregulation of NRF2 by neddylation of cullin 3 was linked to AGER1 downregulation and that induction of NRF2 using an adeno-associated virus-mediated approach in hepatocytes in vivo reversed AGER1 downregulation, lowered the level of AGEs, and improved proinflammatory and fibrogenic responses in mice on a high AGEs diet. In patients with NASH and diabetes or insulin resistance, low AGER1 levels were associated with hepatocyte ballooning degeneration and ductular reaction. Collectively, prolonged exposure to AGEs in the liver promotes an AGER1/RAGE imbalance and consequent redox, inflammatory, and fibrogenic activity in NASH.
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Affiliation(s)
- Ali Dehnad
- Gastroenterology and Hepatology, Stanford University, Stanford, and VA Palo Alto, California, USA
| | - Weiguo Fan
- Gastroenterology and Hepatology, Stanford University, Stanford, and VA Palo Alto, California, USA
| | | | | | - Yuan Li
- Gastroenterology and Hepatology, Stanford University, Stanford, and VA Palo Alto, California, USA
| | - Suvarthi Das
- Gastroenterology and Hepatology, Stanford University, Stanford, and VA Palo Alto, California, USA
| | - Gergely Mozes
- Gastroenterology and Hepatology, Stanford University, Stanford, and VA Palo Alto, California, USA
| | | | - Kristin A Olson
- Department of Pathology, UC Davis Medical Center, Sacramento, California, USA
| | | | - Mohammed Ali
- Department of Surgery, UC Davis Medical Center, Sacramento, California, USA
| | - Natalie J Török
- Gastroenterology and Hepatology, Stanford University, Stanford, and VA Palo Alto, California, USA
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25
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van der Lugt T, Opperhuizen A, Bast A, Vrolijk MF. Dietary Advanced Glycation Endproducts and the Gastrointestinal Tract. Nutrients 2020; 12:nu12092814. [PMID: 32937858 PMCID: PMC7551018 DOI: 10.3390/nu12092814] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/10/2020] [Accepted: 09/11/2020] [Indexed: 12/19/2022] Open
Abstract
The prevalence of inflammatory bowel diseases (IBD) is increasing in the world. The introduction of the Western diet has been suggested as a potential explanation of increased prevalence. The Western diet includes highly processed food products, and often include thermal treatment. During thermal treatment, the Maillard reaction can occur, leading to the formation of dietary advanced glycation endproducts (dAGEs). In this review, different biological effects of dAGEs are discussed, including their digestion, absorption, formation, and degradation in the gastrointestinal tract, with an emphasis on their pro-inflammatory effects. In addition, potential mechanisms in the inflammatory effects of dAGEs are discussed. This review also specifically elaborates on the involvement of the effects of dAGEs in IBD and focuses on evidence regarding the involvement of dAGEs in the symptoms of IBD. Finally, knowledge gaps that still need to be filled are identified.
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Affiliation(s)
- Timme van der Lugt
- Department of Pharmacology and Toxicology, Maastricht University, 6229 ER Maastricht, The Netherlands;
- Office for Risk Assessment and Research, Netherlands Food and Consumer Product Safety Authority (NVWA), 3540 AA Utrecht, The Netherlands
- Correspondence:
| | - Antoon Opperhuizen
- Department of Pharmacology and Toxicology, Maastricht University, 6229 ER Maastricht, The Netherlands;
- Office for Risk Assessment and Research, Netherlands Food and Consumer Product Safety Authority (NVWA), 3540 AA Utrecht, The Netherlands
| | - Aalt Bast
- Department of Pharmacology and Toxicology, Maastricht University, 6229 ER Maastricht, The Netherlands;
- Campus Venlo, Maastricht University, 5911 BV Venlo, The Netherlands; (A.B.); (M.F.V.)
| | - Misha F. Vrolijk
- Campus Venlo, Maastricht University, 5911 BV Venlo, The Netherlands; (A.B.); (M.F.V.)
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26
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André A, Touré AK, Stien D, Eparvier V. 2,5-diketopiperazines mitigate the amount of advanced glycation end products accumulated with age in human dermal fibroblasts. Int J Cosmet Sci 2020; 42:596-604. [PMID: 32767373 DOI: 10.1111/ics.12655] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 07/29/2020] [Indexed: 01/21/2023]
Abstract
OBJECTIVE Glycation is a common non-enzymatic reaction between proteins and sugars, resulting in the formation of advanced glycation end products (AGEs) in the human body. As can be seen in diabetic patients, the accumulation of AGEs in the skin has aesthetic consequences (wrinkles, brown spots and yellowish complexion). Therefore, the objective of this work was to find compounds isolated from natural sources that could eliminate the final AGEs accumulated in the skin with ageing. METHODS AND RESULTS A preliminary screening performed on a bank of microbial extracts and pure compounds showed that 2,5-Diketopiperazines (DKPs), as well as the extract of Sphingobacterium sp (SNB-CN13), reduced the presence of AGEs in fibroblasts by -28% and -23%, respectively. In this article, we present the dereplication approach used to reveal the presence of 26 different DKPs in the crude extract of Sphingobacterium sp. Bioguided fractionation has led to the isolation of 12 of them, whose identity has been confirmed by HRMS and NMR. A green synthesis approach has been developed to synthesize 3 symmetrical DKPs. The biological activity of all DKPs was evaluated by the development of an in vitro test using immunocytochemistry to reveal the presence of AGE carboxymethyl-lysine in human dermal fibroblasts. CONCLUSION Our work shows for the first time that DKPs decrease the amount of carboxymethyl-lysine AGE in elderly human dermal fibroblasts grown in vitro. Therefore, diketopiperazines can be considered as compounds of interest for dermatological and cosmetic applications with an anti-ageing aim.
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Affiliation(s)
- A André
- CNRS, Institut de Chimie des Substances Naturelles, UPR 2301, Université Paris-Saclay, 1 avenue de la Terrasse, Gif-sur-Yvette, 91198, France.,Laboratoire Shigeta, 62 boulevard Davout, Paris, 75020, France
| | - A K Touré
- Laboratoire Shigeta, 62 boulevard Davout, Paris, 75020, France
| | - D Stien
- Laboratoire de Biodiversité et Biotechnologies Microbiennes, Sorbonne Université, CNRS, USR 3579, Banyuls-sur-mer, 66650, France
| | - V Eparvier
- Laboratoire Shigeta, 62 boulevard Davout, Paris, 75020, France
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27
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Feng H, Hu H, Zheng P, Xun T, Wu S, Yang X, Mo L. AGE receptor 1 silencing enhances advanced oxidative protein product-induced epithelial-to-mesenchymal transition of human kidney proximal tubular epithelial cells via RAGE activation. Biochem Biophys Res Commun 2020; 529:1201-1208. [PMID: 32819586 DOI: 10.1016/j.bbrc.2020.06.144] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 06/26/2020] [Indexed: 12/14/2022]
Abstract
Advanced oxidative protein products (AOPPs) are novel uremic toxins whose concentrations continuously increases in patients with chronic kidney disease (CKD). Epithelial-to-mesenchymal transition (EMT) of tubular cells is the main mechanism underlying CKD pathogenesis. Studies have shown that AOPPs can induce EMT and promote renal fibrosis. However, the mechanism through which AOPPs induce tubular cell-EMT is poorly understood. In this study, we aimed to clarify the mechanisms underlying AOPP-induced EMT in human kidney proximal tubular (HKC-8) epithelial cells. Small molecule inhibitor, CRISPR-Cas9 knockout technology, siRNA knockdown technology, western blot, and reverse transcription-quantitative polymerase chain reaction were applied to investigate the mechanisms underlying AOPP-induced EMT in HKC-8 cells. AOPP treatment was found to significantly induce EMT, as evidenced by increased α-smooth muscle actin (α-SMA) and decreased E-cadherin levels, and upregulated Wnt1, β-catenin, Tcf4, and Gsk-3β expression. Conversely, blockade of Wnt/β-catenin signaling using small molecule inhibitor ICG-001 hindered AOPP-induced EMT. Moreover, knockout of receptor of advanced glycation end-products (RAGE) reversed these aforementioned effects, whereas AGE receptor 1 (AGER1)-specific siRNA transfection enhanced them. Taken together, these data suggested that AOPPs could induce HKC-8 cell EMT by activating the RAGE/Wnt/β-catenin signaling pathway and AGER1 could restore EMT by antagonizing the role of RAGE. These results may provide a new theoretical basis for EMT and help identify new therapeutic targets for suppressing CKD progression.
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Affiliation(s)
- Haixing Feng
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Hongling Hu
- Department of Orthopaedic Surgery, Shunde Hospital, Southern Medical University, Foshan, 528000, China.
| | - Ping Zheng
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Tianrong Xun
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Shulong Wu
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Xixiao Yang
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
| | - Liqian Mo
- Department of Pharmacy, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
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28
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Inacio MD, Costa MC, Lima TFO, Figueiredo ID, Motta BP, Spolidorio LC, Assis RP, Brunetti IL, Baviera AM. Pentoxifylline mitigates renal glycoxidative stress in obese mice by inhibiting AGE/RAGE signaling and increasing glyoxalase levels. Life Sci 2020; 258:118196. [PMID: 32763295 DOI: 10.1016/j.lfs.2020.118196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/30/2020] [Accepted: 07/31/2020] [Indexed: 12/12/2022]
Abstract
AIM The pharmacological properties of pentoxifylline have been re-evaluated, particularly in chronic kidney disease in diabetes, favored by its anti-inflammatory action. Definitive evidences of renal outcomes are lacking, which indicates the need for investigation of novel mechanisms of action of pentoxifylline. We postulated that components associated with the metabolism of advanced glycation end products (AGEs) may be modulated by pentoxifylline, which consequently decreases the detrimental effects of obesity on kidneys. MAIN METHODS C57BL-6J mice were fed a high-fat diet for 14 weeks and treated with 50 mg/kg pentoxifylline during the last 7 weeks. Changes in the renal levels of AGE metabolism-associated components were investigated, with particular focus on the receptor for AGEs (RAGE), its downstream components, and components related to AGE detoxification, including glyoxalase 1 (GLO 1). KEY FINDINGS Pentoxifylline reduced body weight gain, improved insulin sensitivity and glucose tolerance, downregulated biomarkers of glycoxidative stress, and enhanced plasma paraoxonase 1 activity. In the kidneys, pentoxifylline inhibited glomerular expansion, lipid deposition, reduced pro-inflammatory cytokine levels, and induced the activation of AMP-activated protein kinase. Pentoxifylline inhibited the renal accumulation of AGEs and reduced the levels of RAGE and its downstream components, and consequently mitigated oxidative stress and apoptosis. Pentoxifylline also increased the renal levels of GLO 1 and the activities of antioxidant enzymes. Urinary albumin levels were observed to be lowered, which reconfirmed the antialbuminuric effects of pentoxifylline. SIGNIFICANCE The novel mechanisms of action help explain the renoprotective effects of pentoxifylline and the attenuation of obesity-associated renal complications related to glycoxidative stress.
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Affiliation(s)
- Maiara Destro Inacio
- São Paulo State University (Unesp), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil
| | - Mariana Campos Costa
- São Paulo State University (Unesp), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil
| | - Tayra Ferreira Oliveira Lima
- São Paulo State University (Unesp), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil
| | - Ingrid Delbone Figueiredo
- São Paulo State University (Unesp), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil
| | - Bruno Pereira Motta
- São Paulo State University (Unesp), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil
| | - Luís Carlos Spolidorio
- São Paulo State University (Unesp), Araraquara School of Dentistry, Department of Physiology and Pathology, Araraquara, São Paulo, Brazil
| | - Renata Pires Assis
- São Paulo State University (Unesp), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil; Paulista University (UNIP), Institute of Health Sciences, Araraquara, São Paulo, Brazil
| | - Iguatemy Lourenço Brunetti
- São Paulo State University (Unesp), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil
| | - Amanda Martins Baviera
- São Paulo State University (Unesp), School of Pharmaceutical Sciences, Department of Clinical Analysis, Araraquara, São Paulo, Brazil.
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Diehl KL, Muir TW. Chromatin as a key consumer in the metabolite economy. Nat Chem Biol 2020; 16:620-629. [PMID: 32444835 DOI: 10.1038/s41589-020-0517-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 03/05/2020] [Indexed: 12/31/2022]
Abstract
In eukaryotes, chromatin remodeling and post-translational modifications (PTMs) shape the local chromatin landscape to establish permissive and repressive regions within the genome, orchestrating transcription, replication, and DNA repair in concert with other epigenetic mechanisms. Though cellular nutrient signaling encompasses a huge number of pathways, recent attention has turned to the hypothesis that the metabolic state of the cell is communicated to the genome through the type and concentration of metabolites in the nucleus that are cofactors for chromatin-modifying enzymes. Importantly, both epigenetic and metabolic dysregulation are hallmarks of a range of diseases, and this metabolism-chromatin axis may yield a well of new therapeutic targets. In this Perspective, we highlight emerging themes in the inter-regulation of the genome and metabolism via chromatin, including nonenzymatic histone modifications arising from chemically reactive metabolites, the expansion of PTM diversity from cofactor-promiscuous chromatin-modifying enzymes, and evidence for the existence and importance of subnucleocytoplasmic metabolite pools.
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Affiliation(s)
- Katharine L Diehl
- Department of Chemistry, Princeton University, Princeton, NJ, USA. .,Department of Medicinal Chemistry, University of Utah, Salt Lake City, UT, USA.
| | - Tom W Muir
- Department of Chemistry, Princeton University, Princeton, NJ, USA.
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30
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Prasad K, Bhanumathy KK. AGE-RAGE Axis in the Pathophysiology of Chronic Lower Limb Ischemia and a Novel Strategy for Its Treatment. Int J Angiol 2020; 29:156-167. [PMID: 33041612 DOI: 10.1055/s-0040-1710045] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
This review focuses on the role of advanced glycation end products (AGEs) and its cell receptor (RAGE) and soluble receptor (sRAGE) in the pathogenesis of chronic lower limb ischemia (CLLI) and its treatment. CLLI is associated with atherosclerosis in lower limb arteries. AGE-RAGE axis which comprises of AGE, RAGE, and sRAGE has been implicated in atherosclerosis and restenosis. It may be involved in atherosclerosis of lower limb resulting in CLLI. Serum and tissue levels of AGE, and expression of RAGE are elevated, and the serum levels of sRAGE are decreased in CLLI. It is known that AGE, and AGE-RAGE interaction increase the generation of various atherogenic factors including reactive oxygen species, nuclear factor-kappa B, cell adhesion molecules, cytokines, monocyte chemoattractant protein-1, granulocyte macrophage-colony stimulating factor, and growth factors. sRAGE acts as antiatherogenic factor because it reduces the generation of AGE-RAGE-induced atherogenic factors. Treatment of CLLI should be targeted at lowering AGE levels through reduction of dietary intake of AGE, prevention of AGE formation and degradation of AGE, suppression of RAGE expression, blockade of AGE-RAGE binding, elevation of sRAGE by upregulating sRAGE expression, and exogenous administration of sRAGE, and use of antioxidants. In conclusion, AGE-RAGE stress defined as a shift in the balance between stressors (AGE, RAGE) and antistressor (sRAGE) in favor of stressors, initiates the development of atherosclerosis resulting in CLLI. Treatment modalities would include reduction of AGE levels and RAGE expression, RAGE blocker, elevation of sRAGE, and antioxidants for prevention, regression, and slowing of progression of CLLI.
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Affiliation(s)
- Kailash Prasad
- Department of Physiology (APP), College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Kalpana K Bhanumathy
- Division of Oncology, Cancer Cluster Unit, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
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31
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Patel DM, Bose M, Cooper ME. Glucose and Blood Pressure-Dependent Pathways-The Progression of Diabetic Kidney Disease. Int J Mol Sci 2020; 21:ijms21062218. [PMID: 32210089 PMCID: PMC7139394 DOI: 10.3390/ijms21062218] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/17/2020] [Accepted: 03/17/2020] [Indexed: 12/11/2022] Open
Abstract
The major clinical associations with the progression of diabetic kidney disease (DKD) are glycemic control and systemic hypertension. Recent studies have continued to emphasize vasoactive hormone pathways including aldosterone and endothelin which suggest a key role for vasoconstrictor pathways in promoting renal damage in diabetes. The role of glucose per se remains difficult to define in DKD but appears to involve key intermediates including reactive oxygen species (ROS) and dicarbonyls such as methylglyoxal which activate intracellular pathways to promote fibrosis and inflammation in the kidney. Recent studies have identified a novel molecular interaction between hemodynamic and metabolic pathways which could lead to new treatments for DKD. This should lead to a further improvement in the outlook of DKD building on positive results from RAAS blockade and more recently newer classes of glucose-lowering agents such as SGLT2 inhibitors and GLP1 receptor agonists.
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Affiliation(s)
- Devang M. Patel
- Department of Diabetes, Monash University Central, Clinical School, Melbourne, VIC 3004, Australia;
- Correspondence: (D.M.P.); (M.E.C.)
| | - Madhura Bose
- Department of Diabetes, Monash University Central, Clinical School, Melbourne, VIC 3004, Australia;
| | - Mark E. Cooper
- Department of Diabetes, Monash University Central, Clinical School, Melbourne, VIC 3004, Australia;
- Department of Endocrinology and Diabetes, The Alfred Hospital, Melbourne, VIC 3004, Australia
- Correspondence: (D.M.P.); (M.E.C.)
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32
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Lim K, Kalim S. The Role of Nonenzymatic Post-translational Protein Modifications in Uremic Vascular Calcification. Adv Chronic Kidney Dis 2019; 26:427-436. [PMID: 31831121 DOI: 10.1053/j.ackd.2019.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/07/2019] [Accepted: 10/07/2019] [Indexed: 01/11/2023]
Abstract
Considerable technological advances have enabled the identification and linkage of nonenzymatic post-translationally modified proteins to the pathogenesis of cardiovascular disease (CVD) in patients with kidney failure. Through processes such as the nonenzymatic carbamylation reaction as well as the formation of advanced glycation end products, we now know that protein modifications are invariably associated with the development of CVD beyond a mere epiphenomenon and this has become an important focus of nephrology research in recent years. Although the specific mechanisms by which protein modifications occurring in kidney failure that may contribute to CVD are diverse and include pathways such as inflammation and fibrosis, vascular calcification has emerged as a distinct pathological sequelae of protein modifications. In this review, we consider the biological mechanisms and clinical relevance of protein carbamylation and advanced glycation end products in CVD development with a focus on vascular calcification.
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Zhuang A, Yap FYT, McCarthy D, Leung C, Sourris KC, Penfold SA, Thallas-Bonke V, Coughlan MT, Schulz BL, Forbes JM. Globally elevating the AGE clearance receptor, OST48, does not protect against the development of diabetic kidney disease, despite improving insulin secretion. Sci Rep 2019; 9:13664. [PMID: 31541173 PMCID: PMC6754370 DOI: 10.1038/s41598-019-50221-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 09/09/2019] [Indexed: 01/08/2023] Open
Abstract
The accumulation of advanced glycation end products (AGEs) have been implicated in the development and progression of diabetic kidney disease (DKD). There has been interest in investigating the potential of AGE clearance receptors, such as oligosaccharyltransferase-48 kDa subunit (OST48) to prevent the detrimental effects of excess AGE accumulation seen in the diabetic kidney. Here the objective of the study was to increase the expression of OST48 to examine if this slowed the development of DKD by facilitating the clearance of AGEs. Groups of 8-week-old heterozygous knock-in male mice (n = 9-12/group) over-expressing the gene encoding for OST48, dolichyl-diphosphooligosaccharide-protein glycosyltransferase (DDOST+/-) and litter mate controls were randomised to either (i) no diabetes or (ii) diabetes induced via multiple low-dose streptozotocin and followed for 24 weeks. By the study end, global over expression of OST48 increased glomerular OST48. This facilitated greater renal excretion of AGEs but did not affect circulating or renal AGE concentrations. Diabetes resulted in kidney damage including lower glomerular filtration rate, albuminuria, glomerulosclerosis and tubulointerstitial fibrosis. In diabetic mice, tubulointerstitial fibrosis was further exacerbated by global increases in OST48. There was significantly insulin effectiveness, increased acute insulin secretion, fasting insulin concentrations and AUCinsulin observed during glucose tolerance testing in diabetic mice with global elevations in OST48 when compared to diabetic wild-type littermates. Overall, this study suggested that despite facilitating urinary-renal AGE clearance, there were no benefits observed on kidney functional and structural parameters in diabetes afforded by globally increasing OST48 expression. However, the improvements in insulin secretion seen in diabetic mice with global over-expression of OST48 and their dissociation from effects on kidney function warrant future investigation.
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Affiliation(s)
- Aowen Zhuang
- Glycation and Diabetes Complications, Mater Research Institute, The University of Queensland, Translational Research Institute, Woolloongabba, Australia.,School of Medicine, University of Queensland, St Lucia, Australia
| | - Felicia Y T Yap
- Baker IDI Heart and Diabetes Institute, Melbourne, Australia.,Department of Immunology, Central and Eastern Clinical School, AMREP Precinct, Monash University, Melbourne, Australia
| | - Domenica McCarthy
- Glycation and Diabetes Complications, Mater Research Institute, The University of Queensland, Translational Research Institute, Woolloongabba, Australia
| | - Chris Leung
- Department of Medicine, University of Melbourne, Austin Hospital, Heidelberg, Australia
| | - Karly C Sourris
- Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Sally A Penfold
- Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | | | | | - Benjamin L Schulz
- School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, Australia
| | - Josephine M Forbes
- Glycation and Diabetes Complications, Mater Research Institute, The University of Queensland, Translational Research Institute, Woolloongabba, Australia. .,School of Medicine, University of Queensland, St Lucia, Australia. .,Mater Clinical School, University of Queensland, St Lucia, Australia.
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Rodrigo S, Panadero MI, Fauste E, Rodríguez L, Roglans N, Álvarez-Millán JJ, Otero P, Laguna JC, Bocos C. Effects of Maternal Fructose Intake on Perinatal ER-Stress: A Defective XBP1s Nuclear Translocation Affects the ER-stress Resolution. Nutrients 2019; 11:nu11081935. [PMID: 31426466 PMCID: PMC6723662 DOI: 10.3390/nu11081935] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/13/2019] [Accepted: 08/15/2019] [Indexed: 12/31/2022] Open
Abstract
Endoplasmic reticulum (ER) homeostasis is crucial to appropriate cell functioning, and when disturbed, a safeguard system called unfolded protein response (UPR) is activated. Fructose consumption modifies ER homeostasis and has been related to metabolic syndrome. However, fructose sweetened beverages intake is allowed during gestation. Therefore, we investigate whether maternal fructose intake affects the ER status and induces UPR. Thus, administrating liquid fructose (10% w/v) to pregnant rats partially activated the ER-stress in maternal and fetal liver and placenta. In fact, a fructose-induced increase in the levels of pIRE1 (phosphorylated inositol requiring enzyme-1) and its downstream effector, X-box binding protein-1 spliced form (XBP1s), was observed. XBP1s is a key transcription factor, however, XBP1s nuclear translocation and the expression of its target genes were reduced in the liver of the carbohydrate-fed mothers, and specifically diminished in the fetal liver and placenta in the fructose-fed mothers. These XBP1s target genes belong to the ER-associated protein degradation (ERAD) system, used to buffer ER-stress and to restore ER-homeostasis. It is known that XBP1s needs to form a complex with diverse proteins to migrate into the nucleus. Since methylglyoxal (MGO) content, a precursor of advanced glycation endproducts (AGE), was augmented in the three tissues in the fructose-fed mothers and has been related to interfere with the functioning of many proteins, the role of MGO in XBP1s migration should not be discarded. In conclusion, maternal fructose intake produces ER-stress, but without XBP1s nuclear migration. Therefore, a complete activation of UPR that would resolve ER-stress is lacking. A state of fructose-induced oxidative stress is probably involved.
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Affiliation(s)
- Silvia Rodrigo
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Montepríncipe, Boadilla del Monte, 28668 Madrid, Spain
| | - María I Panadero
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Montepríncipe, Boadilla del Monte, 28668 Madrid, Spain
| | - Elena Fauste
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Montepríncipe, Boadilla del Monte, 28668 Madrid, Spain
| | - Lourdes Rodríguez
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Montepríncipe, Boadilla del Monte, 28668 Madrid, Spain
| | - Núria Roglans
- Facultad de Farmacia, Universidad de Barcelona, CIBERobn, IBUB, Avda. Joan XXIII 27-31, 08028 Barcelona, Spain
| | | | - Paola Otero
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Montepríncipe, Boadilla del Monte, 28668 Madrid, Spain
| | - Juan C Laguna
- Facultad de Farmacia, Universidad de Barcelona, CIBERobn, IBUB, Avda. Joan XXIII 27-31, 08028 Barcelona, Spain
| | - Carlos Bocos
- Facultad de Farmacia, Universidad San Pablo-CEU, CEU Universities, Montepríncipe, Boadilla del Monte, 28668 Madrid, Spain.
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P66Shc and vascular endothelial function. Biosci Rep 2019; 39:BSR20182134. [PMID: 30918103 PMCID: PMC6488855 DOI: 10.1042/bsr20182134] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/21/2019] [Accepted: 03/26/2019] [Indexed: 12/23/2022] Open
Abstract
Dysfunctional endothelium is an early change in vasculature known to be associated with atherosclerosis. Among many regulators of vascular endothelial function, p66Shc has consistently been shown to mediate endothelial dysfunction. Over more than three decades of active research in the field of the physiological function of p66Shc, regulation of vascular endothelial functions has emerged as one of the most robust effects in a broad range of pathological conditions including hyperlipidemia, diabetes, and aging. A significant understanding has been developed with respect to the molecular signaling regulating the oxidative function of p66Shc in endothelial cells and its targets and regulators. In addition, novel regulatory modifications of p66Shc controlling its oxidative function, subcellular distribution, and stability have also been reported. This review will focus on summarizing the molecular signaling regulating the oxidative function of p66Shc and its role in vascular endothelium.
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Perkins RK, Miranda ER, Karstoft K, Beisswenger PJ, Solomon TPJ, Haus JM. Experimental Hyperglycemia Alters Circulating Concentrations and Renal Clearance of Oxidative and Advanced Glycation End Products in Healthy Obese Humans. Nutrients 2019; 11:nu11030532. [PMID: 30823632 PMCID: PMC6471142 DOI: 10.3390/nu11030532] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 02/20/2019] [Accepted: 02/21/2019] [Indexed: 02/07/2023] Open
Abstract
The purpose of this investigation was to evaluate the effects of experimental hyperglycemia on oxidative damage (OX), advanced glycation end products (AGEs), and the receptor for AGEs (RAGE) through an in vivo approach. Obese subjects (n = 10; 31.2 ± 1.2 kg·m−2; 56 ± 3 years) underwent 24 h of hyperglycemic clamp (+5.4 mM above basal), where plasma at basal and after 2 h and 24 h of hyperglycemic challenge were assayed for OX (methionine sulfoxide, MetSO, and aminoadipic acid, AAA) and AGE-free adducts (Ne-carboxymethyllysine, CML; Ne-carboxyethyllysine, CEL; glyoxal hydroimidazolone-1, GH-1; methylglyoxal hydroimidazolone-1, MG-H1; and 3-deoxyglucosone hydroimidazolone, 3DG-H) via liquid chromatography–tandem mass spectrometry (LC–MS/MS). Urine was also analyzed at basal and after 24 h for OX and AGE-free adducts and plasma soluble RAGE (sRAGE) isoforms (endogenous secretory RAGE, esRAGE, and cleaved RAGE, cRAGE), and inflammatory markers were determined via enzyme-linked immunosorbent assay (ELISA). Skeletal muscle tissue collected via biopsy was probed at basal, 2 h, and 24 h for RAGE and OST48 protein expression. Plasma MetSO, AAA, CEL, MG-H1, and G-H1 decreased (−18% to −47%; p < 0.05), while CML increased (72% at 24 h; p < 0.05) and 3DG-H remained unchanged (p > 0.05) with the hyperglycemic challenge. Renal clearance of MetSO, AAA, and G-H1 increased (599% to 1077%; p < 0.05), CML decreased (−30%; p < 0.05), and 3DG-H, CEL, and MG-H1 remained unchanged (p > 0.05). Fractional excretion of MetSO, AAA, CEL, G-H1, and MG-H1 increased (5.8% to 532%; p < 0.05) and CML and 3DG-H remained unchanged (p > 0.05). Muscle RAGE and OST48 expression, plasma sRAGE, IL-1β, IL-1Ra, and TNFα remained unchanged (p > 0.05), while IL-6 increased (159% vs. basal; p > 0.05). These findings suggest that individuals who are obese but otherwise healthy have the capacity to prevent accumulation of OX and AGEs during metabolic stress by increasing fractional excretion and renal clearance.
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Affiliation(s)
- Ryan K Perkins
- School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Edwin R Miranda
- School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Kristian Karstoft
- Centre of Inflammation and Metabolism and Centre for Physical Activity Research, Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen, Denmark.
| | - Paul J Beisswenger
- Geisel School of Medicine, Dartmouth College, PreventAGE Healthcare, 16 Cavendish Court, Lebanon, NH 03766, USA.
| | - Thomas P J Solomon
- School of Sport, Exercise, and Rehabilitation Sciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, West Midlands B15 2TT, UK.
- Institute of Metabolism and Systems Research (IMSR), College of Medical and Dental Sciences, University of Birmingham, Birmingham, West Midlands B15 2TT, UK.
| | - Jacob M Haus
- School of Kinesiology, University of Michigan, Ann Arbor, MI 48109, USA.
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Toba H, Lindsey ML. Extracellular matrix roles in cardiorenal fibrosis: Potential therapeutic targets for CVD and CKD in the elderly. Pharmacol Ther 2019; 193:99-120. [PMID: 30149103 PMCID: PMC6309764 DOI: 10.1016/j.pharmthera.2018.08.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Whereas hypertension, diabetes, and dyslipidemia are age-related risk factors for cardiovascular disease (CVD) and chronic kidney disease (CKD), aging alone is an independent risk factor. With advancing age, the heart and kidney gradually but significantly undergo inflammation and subsequent fibrosis, which eventually results in an irreversible decline in organ physiology. Through cardiorenal network interactions, cardiac dysfunction leads to and responds to renal injury, and both facilitate aging effects. Thus, a comprehensive strategy is needed to evaluate the cardiorenal aging network. Common hallmarks shared across systems include extracellular matrix (ECM) accumulation, along with upregulation of matrix metalloproteinases (MMPs) including MMP-9. The wide range of MMP-9 substrates, including ECM components and inflammatory cytokines, implicates MMP-9 in a variety of pathological and age-related processes. In particular, there is strong evidence that inflammatory cell-derived MMP-9 exacerbates cardiorenal aging. This review explores the potential therapeutic targets against CVD and CKD in the elderly, focusing on ECM and MMP roles.
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Affiliation(s)
- Hiroe Toba
- Department of Clinical Pharmacology, Division of Pathological Sciences, Kyoto Pharmaceutical University, Kyoto, Japan.
| | - Merry L Lindsey
- Mississippi Center for Heart Research, Department of Physiology and Biophysics, University of Mississippi Medical Center, and Research Service, G.V. (Sonny) Montgomery Veterans Affairs Medical Center, Jackson, MS, USA.
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Garay-Sevilla ME, Torres-Graciano S, Villegas-Rodríguez ME, Rivera-Cisneros AE, Wrobel K, Uribarri J. Advanced glycation end products and their receptors did not show any association with body mass parameters in metabolically healthy adolescents. Acta Paediatr 2018; 107:2146-2151. [PMID: 29846968 DOI: 10.1111/apa.14426] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 02/13/2018] [Accepted: 05/28/2018] [Indexed: 02/06/2023]
Abstract
AIM We determined the relationship between circulating advanced glycation end products (AGEs), AGE receptors and homeostatic model assessment for insulin resistance (HOMA-IR) in metabolically healthy obese and normal weight adolescents. METHODS In 2015, we recruited 80 normal weight adolescents and 80 with obesity from schools Leon city, Mexico, and put them into metabolically healthy (HOMA-IR <3.0) and unhealthy (HOMA-IR >3.0) groups. We measured their body mass index (BMI) and carried out detailed blood analyses. RESULTS We found a higher triglycerides, triglycerides/high-density lipoproteins cholesterol (TG/HDL-C) index, HOMA-IR, tumour necrosis factor alpha (TNF-α) and interleukin-6 (IL-6) in the metabolically healthy group and found correlations between HOMA-IR with BMI, the TG/HDL-C index and IL-6 and the TG/HDL-C index and BMI and (TNF-α). There was no correlation between markers of obesity and circulating N-carboxymethyl-lysine (CML) or soluble receptor for advanced glycation end products (sRAGE). Some unhealthy adolescents had higher CML (15.5 ± 2.7 U/mL, p < 0.028) and sRAGE (3123 ± 1364 pg/mL, p < 0.001) than the healthy group. CONCLUSION HOMA-IR and the TG/HDL-C index were associated with BMI and inflammation markers. CML and sRAGE were not associated with obesity or inflammation. These parameters were higher in unhealthy obese adolescents.
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Affiliation(s)
- Ma. Eugenia Garay-Sevilla
- Department of Medical Science; Division of Health Science; University of Guanajuato Campus; León México
| | - Sofía Torres-Graciano
- Department of Medical Science; Division of Health Science; University of Guanajuato Campus; León México
| | | | | | - Katarzyna Wrobel
- Department of Chemistry; University of Guanajuato; Guanajuato México
| | - Jaime Uribarri
- Department of Medicine; The Icahn School of Medicine at Mount Sinai; New York NY USA
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Fishman SL, Sonmez H, Basman C, Singh V, Poretsky L. The role of advanced glycation end-products in the development of coronary artery disease in patients with and without diabetes mellitus: a review. Mol Med 2018; 24:59. [PMID: 30470170 PMCID: PMC6251169 DOI: 10.1186/s10020-018-0060-3] [Citation(s) in RCA: 176] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 11/04/2018] [Indexed: 12/18/2022] Open
Abstract
Background Traditional risk factors are insufficient to explain all cases of coronary artery disease (CAD) in patients with diabetes mellitus (DM). Advanced glycation end-products (AGEs) and their receptors may play important roles in the development and progression of CAD. Body Hyperglycemia is the hallmark feature of DM. An increase in the incidence of both micro-and macrovascular complications of diabetes has been observed with increased duration of hyperglycemia. This association persists even after glycemic control has been achieved, suggesting an innate mechanism of “metabolic memory.” AGEs are glycated proteins that may serve as mediators of metabolic memory due to their increased production in the setting of hyperglycemia and generally slow turnover. Elevated AGE levels can lead to abnormal cross linking of extracellular and intracellular proteins disrupting their normal structure and function. Furthermore, activation of AGE receptors can induce complex signaling pathways leading to increased inflammation, oxidative stress, enhanced calcium deposition, and increased vascular smooth muscle apoptosis, contributing to the development of atherosclerosis. Through these mechanisms, AGEs may be important mediators of the development of CAD. However, clinical studies regarding the role of AGEs and their receptors in advancing CAD are limited, with contradictory results. Conclusion AGEs and their receptors may be useful biomarkers for the presence and severity of CAD. Further studies are needed to evaluate the utility of circulating and tissue AGE levels in identifying asymptomatic patients at risk for CAD or to identify patients who may benefit from invasive intervention.
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Affiliation(s)
- Sarah Louise Fishman
- Division of Endocrinology, Department of Medicine, Lenox Hill Hospital, Northwell Health, 110 East 59th St #8B, New York, NY, 10022, USA
| | - Halis Sonmez
- Center for Diabetes and Endocrinology, 111 Salem Tpke, Norwich, CT, 06360, USA
| | - Craig Basman
- Department of Cardiology, Lenox Hill Hospital, Northwell Health, 100 East 77th St, New York, NY, 10065, USA
| | - Varinder Singh
- Department of Cardiology, Lenox Hill Hospital, Northwell Health, 100 East 77th St, New York, NY, 10065, USA
| | - Leonid Poretsky
- Division of Endocrinology, Department of Medicine, Lenox Hill Hospital, Northwell Health, 110 East 59th St #8B, New York, NY, 10022, USA.
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André A, Wdzieczak-Bakala J, Touré AK, Stien D, Eparvier V. A method to quantify intracellular glycation in dermal fibroblasts using liquid chromatography coupled to fluorescence detection – Application to the selection of deglycation compounds of dermatological interest. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1100-1101:100-105. [DOI: 10.1016/j.jchromb.2018.09.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 09/26/2018] [Accepted: 09/28/2018] [Indexed: 10/28/2022]
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Advanced Glycation End Products Stimulate Angiotensinogen Production in Renal Proximal Tubular Cells. Am J Med Sci 2018; 357:57-66. [PMID: 30466736 DOI: 10.1016/j.amjms.2018.10.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 10/17/2018] [Accepted: 10/17/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND Elevated advanced glycation end products (AGE) in diabetes mellitus (DM) are implicated in the progression of DM-associated tissue injury, including diabetic nephropathy. The intrarenal renin-angiotensin system, in particular augmentation of angiotensinogen (AGT) in proximal tubular cells (PTC), plays a crucial role in the development of diabetic nephropathy. This study investigated hypothesis that AGE stimulates AGT production in PTC. MATERIALS AND METHODS Urinary AGT and AGE levels in streptozotocin-induced DM mice were measured by enzyme-linked immunosorbent assays. AGT expression and secretion were evaluated in cultured rat PTC receiving 0-200 µg/ml AGE-BSA treatments for 24 hours. Furthermore, intracellular signaling pathways activated by AGE were elucidated. RESULTS DM mice exhibited greater urinary AGT and AGE levels compared to control mice (AGT: 21.6 ± 5.5 ng/day vs. 190.1 ± 57.8 ng/day, AGE: 139.1 ± 21.6 μg/day vs. 332.8 ± 102.7 μg/day). In cultured PTC, treatment with AGE-BSA enhanced AGT mRNA expression (3.43 ± 0.11-fold compared to control), intracellular AGT protein levels (3.60 ± 0.38-fold), and secreted AGT levels (2.11 ± 0.18-fold). On the other hand, AGT levels were not altered in PTC receiving nonglycated BSA. Recombinant soluble AGE receptor, which competes with endogenous AGE receptor, diminished the AGE-induced AGT upregulation, suggesting that AGE-BSA stimulates AGT expression via activation of the AGE receptor. Enhanced phosphorylation of ERK1/2 and c-Jun, but not p38 MAP kinase, were observed in AGE-BSA-treated PTC. AGE-induced AGT augmentation was attenuated by an ERK inhibitor. CONCLUSIONS The findings indicate that AGE enhances proximal tubular AGT expression via ERK1/2, which can exacerbate the development of diabetic related kidney injury.
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Chen JH, Lin X, Bu C, Zhang X. Role of advanced glycation end products in mobility and considerations in possible dietary and nutritional intervention strategies. Nutr Metab (Lond) 2018; 15:72. [PMID: 30337945 PMCID: PMC6180645 DOI: 10.1186/s12986-018-0306-7] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 09/21/2018] [Indexed: 02/08/2023] Open
Abstract
Advanced glycation end products (AGEs), a group of compounds that are formed by non-enzymatic reactions between carbonyl groups of reducing sugars and free amino groups of proteins, lipids or nucleic acids, can be obtained exogenously from diet or formed endogenously within the body. AGEs accumulate intracellularly and extracellularly in all tissues and body fluids and can cross-link with other proteins and thus affect their normal functions. Furthermore, AGEs can interact with specific cell surface receptors and hence alter cell intracellular signaling, gene expression, the production of reactive oxygen species and the activation of several inflammatory pathways. High levels of AGEs in diet as well as in tissues and the circulation are pathogenic to a wide range of diseases. With respect to mobility, AGEs accumulate in bones, joints and skeletal muscles, playing important roles in the development of osteoporosis, osteoarthritis, and sarcopenia with aging. This report covered the related pathological mechanisms and the potential pharmaceutical and dietary intervention strategies in reducing systemic AGEs. More prospective studies are needed to determine whether elevated serum AGEs and/or skin autofluorescence predict a decline in measures of mobility. In addition, human intervention studies are required to investigate the beneficial effects of exogenous AGEs inhibitors on mobility outcomes.
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Affiliation(s)
- Jie-Hua Chen
- Science and Technology Centre, By-Health Co. Ltd, No. 3 Kehui 3rd Street, No. 99 Kexue Avenue Central, Science City, Luogang District, Guangzhou, 510000 China
| | - Xu Lin
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200031 China
| | - Cuihong Bu
- Science and Technology Centre, By-Health Co. Ltd, No. 3 Kehui 3rd Street, No. 99 Kexue Avenue Central, Science City, Luogang District, Guangzhou, 510000 China
| | - Xuguang Zhang
- Science and Technology Centre, By-Health Co. Ltd, No. 3 Kehui 3rd Street, No. 99 Kexue Avenue Central, Science City, Luogang District, Guangzhou, 510000 China
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Fournet M, Bonté F, Desmoulière A. Glycation Damage: A Possible Hub for Major Pathophysiological Disorders and Aging. Aging Dis 2018; 9:880-900. [PMID: 30271665 PMCID: PMC6147582 DOI: 10.14336/ad.2017.1121] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 11/21/2017] [Indexed: 12/25/2022] Open
Abstract
Glycation is both a physiological and pathological process which mainly affects proteins, nucleic acids and lipids. Exogenous and endogenous glycation produces deleterious reactions that take place principally in the extracellular matrix environment or within the cell cytosol and organelles. Advanced glycation end product (AGE) formation begins by the non-enzymatic glycation of free amino groups by sugars and aldehydes which leads to a succession of rearrangements of intermediate compounds and ultimately to irreversibly bound products known as AGEs. Epigenetic factors, oxidative stress, UV and nutrition are important causes of the accumulation of chemically and structurally different AGEs with various biological reactivities. Cross-linked proteins, deriving from the glycation process, present both an altered structure and function. Nucleotides and lipids are particularly vulnerable targets which can in turn favor DNA mutation or a decrease in cell membrane integrity and associated biological pathways respectively. In mitochondria, the consequences of glycation can alter bioenergy production. Under physiological conditions, anti-glycation defenses are sufficient, with proteasomes preventing accumulation of glycated proteins, while lipid turnover clears glycated products and nucleotide excision repair removes glycated nucleotides. If this does not occur, glycation damage accumulates, and pathologies may develop. Glycation-induced biological products are known to be mainly associated with aging, neurodegenerative disorders, diabetes and its complications, atherosclerosis, renal failure, immunological changes, retinopathy, skin photoaging, osteoporosis, and progression of some tumors.
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Affiliation(s)
- Maxime Fournet
- 1University of Limoges, Faculty of Pharmacy, Department of Physiology, EA 6309, F-87025 Limoges, France
| | | | - Alexis Desmoulière
- 3University of Limoges, Faculty of Pharmacy, Department of Physiology, EA 6309, F-87025 Limoges, France
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Garaschuk O, Semchyshyn HM, Lushchak VI. Healthy brain aging: Interplay between reactive species, inflammation and energy supply. Ageing Res Rev 2018; 43:26-45. [PMID: 29452266 DOI: 10.1016/j.arr.2018.02.003] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 11/13/2017] [Accepted: 02/08/2018] [Indexed: 02/07/2023]
Abstract
Brains' high energy expenditure with preferable utilization of glucose and ketone bodies, defines the specific features of its energy homeostasis. The extensive oxidative metabolism is accompanied by a concomitant generation of high amounts of reactive oxygen, nitrogen, and carbonyl species, which will be here collectively referred to as RONCS. Such metabolism in combination with high content of polyunsaturated fatty acids creates specific problems in maintaining brains' redox homeostasis. While the levels of products of interaction between RONCS and cellular components increase slowly during the first two trimesters of individuals' life, their increase is substantially accelerated towards the end of life. Here we review the main mechanisms controlling the redox homeostasis of the mammalian brain, their age-dependencies as well as their adaptive potential, which might turn out to be much higher than initially assumed. According to recent data, the organism seems to respond to the enhancement of aging-related toxicity by forming a new homeostatic set point. Therefore, further research will focus on understanding the properties of the new set point(s), the general nature of this phenomenon and will explore the limits of brains' adaptivity.
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Affiliation(s)
- O Garaschuk
- Department of Neurophysiology, Institute of Physiology, University of Tübingen, 72074 Tübingen, Germany.
| | - H M Semchyshyn
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str, Ivano-Frankivsk, 76018, Ukraine.
| | - V I Lushchak
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str, Ivano-Frankivsk, 76018, Ukraine.
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Prasad K, Mishra M. AGE-RAGE Stress, Stressors, and Antistressors in Health and Disease. Int J Angiol 2017; 27:1-12. [PMID: 29483760 DOI: 10.1055/s-0037-1613678] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Adverse effects of advanced glycation end-products (AGEs) on the tissues are through nonreceptor- and receptor-mediated mechanisms. In the receptor-mediated mechanism, interaction of AGEs with its cell-bound receptor of AGE (RAGE) increases generation of oxygen radicals, activates nuclear factor-kappa B, and increases expression and release of pro-inflammatory cytokines resulting in the cellular damage. The deleterious effects of AGE and AGE-RAGE interaction are coined as "AGE-RAGE stress." The body is equipped with defense mechanisms to counteract the adverse effects of AGE and RAGE through endogenous enzymatic (glyoxalase 1, glyoxalase 2) and AGE receptor-mediated (AGER1, AGER2) degradation of AGE, and through elevation of soluble receptor of AGE (sRAGE). Exogenous defense mechanisms include reduction in consumption of AGE, prevention of AGE formation, and downregulation of RAGE expression. We have coined AGE and RAGE as "stressors" and the defense mechanisms as "anti-stressors." AGE-RAGE stress is defined as a shift in the balance between stressors and antistressors in the favor of stressors. Measurements of stressors or antistressors alone would not assess AGE-RAGE stress. For true assessment of AGE-RAGE stress, the equation should include all the stressors and antistressors. The equation for AGE-RAGE stress, therefore, would be the ratio of AGE + RAGE/sRAGE + glyoxalase1 + glyoxalase 2 + AGER1 +AGER2. This is, however, not practical in patients. AGE-RAGE stress may be assessed simply by the ratio of AGE/sRAGE. A high ratio of AGE/sRAGE indicates a relative shift in stressors from antistressors, suggesting the presence of AGE-RAGE stress, resulting in tissue damage, initiation, and progression of the diseases and their complications.
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Affiliation(s)
- Kailash Prasad
- Department of Physiology, University of Saskatchewan, College of Medicine, Saskatoon, Canada
| | - Manish Mishra
- Department of Physiology, University of Saskatchewan, College of Medicine, Saskatoon, Canada
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Alizadeh M, Kheirouri S. Curcumin against advanced glycation end products (AGEs) and AGEs-induced detrimental agents. Crit Rev Food Sci Nutr 2017; 59:1169-1177. [DOI: 10.1080/10408398.2017.1396200] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Mohammad Alizadeh
- Associate Professor, Department of Nutrition, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sorayya Kheirouri
- Associate Professor, Department of Nutrition, Tabriz University of Medical Sciences, Tabriz, Iran
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47
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Hollenbach M. The Role of Glyoxalase-I (Glo-I), Advanced Glycation Endproducts (AGEs), and Their Receptor (RAGE) in Chronic Liver Disease and Hepatocellular Carcinoma (HCC). Int J Mol Sci 2017; 18:ijms18112466. [PMID: 29156655 PMCID: PMC5713432 DOI: 10.3390/ijms18112466] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 11/16/2017] [Accepted: 11/17/2017] [Indexed: 12/12/2022] Open
Abstract
Glyoxalase-I (Glo-I) and glyoxalase-II (Glo-II) comprise the glyoxalase system and are responsible for the detoxification of methylglyoxal (MGO). MGO is formed non-enzymatically as a by-product, mainly in glycolysis, and leads to the formation of advanced glycation endproducts (AGEs). AGEs bind to their receptor, RAGE, and activate intracellular transcription factors, resulting in the production of pro-inflammatory cytokines, oxidative stress, and inflammation. This review will focus on the implication of the Glo-I/AGE/RAGE system in liver injury and hepatocellular carcinoma (HCC). AGEs and RAGE are upregulated in liver fibrosis, and the silencing of RAGE reduced collagen deposition and the tumor growth of HCC. Nevertheless, data relating to Glo-I in fibrosis and cirrhosis are preliminary. Glo-I expression was found to be reduced in early and advanced cirrhosis with a subsequent increase of MGO-levels. On the other hand, pharmacological modulation of Glo-I resulted in the reduced activation of hepatic stellate cells and therefore reduced fibrosis in the CCl₄-model of cirrhosis. Thus, current research highlighted the Glo-I/AGE/RAGE system as an interesting therapeutic target in chronic liver diseases. These findings need further elucidation in preclinical and clinical studies.
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Affiliation(s)
- Marcus Hollenbach
- Department of Medicine, Neurology and Dermatology, Division of Gastroenterology and Rheumatology, University of Leipzig, Liebigstrasse 20, D-04103 Leipzig, Germany.
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48
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Son S, Hwang I, Han SH, Shin JS, Shin OS, Yu JW. Advanced glycation end products impair NLRP3 inflammasome-mediated innate immune responses in macrophages. J Biol Chem 2017; 292:20437-20448. [PMID: 29051224 DOI: 10.1074/jbc.m117.806307] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 10/10/2017] [Indexed: 12/20/2022] Open
Abstract
Advanced glycation end products (AGEs) are adducts formed on proteins by glycation with reducing sugars, such as glucose, and tend to form and accumulate under hyperglycemic conditions. AGE accumulation alters protein function and has been implicated in the pathogenesis of many degenerative diseases such as diabetic complications. AGEs have also been shown to promote the production of pro-inflammatory cytokines, but the roles of AGEs in inflammasome signaling have not been explored in detail. Here, we present evidence that AGEs attenuate activation of the NLRP3 inflammasome in bone marrow-derived macrophages (BMDMs) as determined by caspase-1 processing and interleukin-1β production. AGEs also dampened the assembly of the NLRP3 inflammasome, but did not affect the NLRC4 or AIM2 inflammasome activation. Moreover, our data indicated that AGE treatment inhibited Toll-like receptor (TLR)-dependent production of pro-inflammatory cytokines in BMDMs. This immunosuppressive effect of AGE was not associated with a receptor for AGEs (RAGE)-mediated signaling. Instead, AGE treatment markedly suppressed lipopolysaccharide-induced M1 polarization of macrophages. Furthermore, AGEs significantly dampened innate immune responses including NLRP3 inflammasome activation and type-I interferon production in macrophages upon influenza virus infection. These observations collectively suggest that AGEs could impair host NLRP3 inflammasome-mediated innate immune defenses against RNA virus infection leading to an increased susceptibility to infection.
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Affiliation(s)
- Seunghwan Son
- From the Department of Microbiology and Immunology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science
| | - Inhwa Hwang
- From the Department of Microbiology and Immunology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science
| | - Seung Hyeok Han
- the Department of Internal Medicine, Institute of Kidney Disease Research, Yonsei University College of Medicine, Seoul 03722, Korea and
| | - Jeon-Soo Shin
- From the Department of Microbiology and Immunology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science
| | - Ok Sarah Shin
- the Department of Biomedical Sciences, College of Medicine, Korea University Guro Hospital, Seoul 08308, Korea
| | - Je-Wook Yu
- From the Department of Microbiology and Immunology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science,
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Zhuang A, Yap FY, Bruce C, Leung C, Plan MR, Sullivan MA, Herath C, McCarthy D, Sourris KC, Kantharidis P, Coughlan MT, Febbraio MA, Hodson MP, Watt MJ, Angus P, Schulz BL, Forbes JM. Increased liver AGEs induce hepatic injury mediated through an OST48 pathway. Sci Rep 2017; 7:12292. [PMID: 28947796 PMCID: PMC5612946 DOI: 10.1038/s41598-017-12548-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 09/11/2017] [Indexed: 12/13/2022] Open
Abstract
The protein oligosaccharyltransferase-48 (OST48) is integral to protein N-glycosylation in the endoplasmic reticulum (ER) but is also postulated to act as a membrane localised clearance receptor for advanced glycation end-products (AGE). Hepatic ER stress and AGE accumulation are each implicated in liver injury. Hence the objective of this study was to increase the expression of OST48 and examine the effects on hepatic function and structure. Groups of 8 week old male mice (n = 10-12/group) over-expressing the gene for OST48, dolichyl-diphosphooligosaccharide-protein glycosyltransferase (DDOST+/-), were followed for 24 weeks, while randomised to diets either low or high in AGE content. By week 24 of the study, either increasing OST48 expression or consumption of high AGE diet impaired liver function and modestly increased hepatic fibrosis, but their combination significantly exacerbated liver injury in the absence of steatosis. DDOST+/- mice had increased both portal delivery and accumulation of hepatic AGEs leading to central adiposity, insulin secretory defects, shifted fuel usage to fatty and ketoacids, as well as hepatic glycogen accumulation causing hepatomegaly along with hepatic ER and oxidative stress. This study revealed a novel role of the OST48 and AGE axis in hepatic injury through ER stress, changes in fuel utilisation and glucose intolerance.
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Affiliation(s)
- Aowen Zhuang
- Glycation and Diabetes, Mater Research Institute - The University of Queensland, Translational Research Institute, Woolloongabba, Australia
- School of Medicine, University of Queensland, St Lucia, Australia
| | - Felicia Yt Yap
- Diabetic Complications Group, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
- Department of Immunology and Medicine, Central and Eastern Clinical School, AMREP Precinct, Monash University, Clayton, Australia
| | - Clinton Bruce
- Institute for Physical Activity and Nutrition (IPAN), Deakin University, Burwood, Australia
| | - Chris Leung
- Department of Medicine, University of Melbourne, Austin Hospital, Heidelberg, Australia
| | - Manuel R Plan
- Metabolomics Australia, Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, Australia
| | - Mitchell A Sullivan
- Centre for Nutrition and Food Science, Queensland Alliance for Agriculture and Food Innovation, University of Queensland, St Lucia, Australia
| | - Chandana Herath
- Department of Medicine, University of Melbourne, Austin Hospital, Heidelberg, Australia
| | - Domenica McCarthy
- Glycation and Diabetes, Mater Research Institute - The University of Queensland, Translational Research Institute, Woolloongabba, Australia
| | - Karly C Sourris
- Diabetic Complications Group, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
- Department of Immunology and Medicine, Central and Eastern Clinical School, AMREP Precinct, Monash University, Clayton, Australia
| | - Phillip Kantharidis
- Diabetic Complications Group, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Melinda T Coughlan
- Diabetic Complications Group, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
- Department of Immunology and Medicine, Central and Eastern Clinical School, AMREP Precinct, Monash University, Clayton, Australia
| | - Mark A Febbraio
- Diabetic Complications Group, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Mark P Hodson
- Metabolomics Australia, Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, Australia
- School of Pharmacy, University of Queensland, Woolloongabba, Australia
| | - Matthew J Watt
- Biomedicine Discovery Program and the Department of Physiology, Monash University, Clayton, Australia
| | - Peter Angus
- Department of Medicine, University of Melbourne, Austin Hospital, Heidelberg, Australia
| | - Benjamin L Schulz
- School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, Australia
| | - Josephine M Forbes
- Glycation and Diabetes, Mater Research Institute - The University of Queensland, Translational Research Institute, Woolloongabba, Australia.
- Department of Medicine, University of Melbourne, Austin Hospital, Heidelberg, Australia.
- Mater Clinical School, University of Queensland, St Lucia, Australia.
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50
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Gupta RK, Gupta K, Sharma A, Das M, Ansari IA, Dwivedi PD. Maillard reaction in food allergy: Pros and cons. Crit Rev Food Sci Nutr 2017; 58:208-226. [PMID: 26980434 DOI: 10.1080/10408398.2016.1152949] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Food allergens have a notable potential to induce various health concerns in susceptible individuals. The majority of allergenic foods are usually subjected to thermal processing prior to their consumption. However, during thermal processing and long storage of foods, Maillard reaction (MR) often takes place. The MR is a non-enzymatic glycation reaction between the carbonyl group of reducing sugars and compounds having free amino groups. MR may sometimes be beneficial by damaging epitope of allergens and reducing allergenic potential, while exacerbation in allergic reactions may also occur due to changes in the motifs of epitopes or neoallergen generation. Apart from these modulations, non-enzymatic glycation can also modify the food protein(s) with various type of advance glycation end products (AGEs) such as Nϵ-(carboxymethyl-)lysine (CML), pentosidine, pyrraline, and methylglyoxal-H1 derived from MR. These Maillard products may act as immunogen by inducing the activation and proliferation of various immune cells. Literature is available to understand pathogenesis of glycation in the context of various diseases but there is hardly any review that can provide a thorough insight on the impact of glycation in food allergy. Therefore, present review explores the pathogenesis with special reference to food allergy caused by non-enzymatic glycation as well as AGEs.
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Affiliation(s)
- Rinkesh Kumar Gupta
- a Food, Drug and Chemical Toxicology Group, Indian Institute of Toxicology Research , Lucknow -, India.,b Department of Biosciences , Integral University , Lucknow , India
| | - Kriti Gupta
- a Food, Drug and Chemical Toxicology Group, Indian Institute of Toxicology Research , Lucknow -, India
| | - Akanksha Sharma
- a Food, Drug and Chemical Toxicology Group, Indian Institute of Toxicology Research , Lucknow -, India.,c Academy of Scientific and Innovative Research (AcSIR), CSIR-IITR Capmus , Lucknow , India
| | - Mukul Das
- a Food, Drug and Chemical Toxicology Group, Indian Institute of Toxicology Research , Lucknow -, India
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