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Advanced glycation endproduct

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https://www.readbyqxmd.com/read/30537634/pseudoginsenoside-f11-attenuates-cognitive-impairment-by-ameliorating-oxidative-stress-and-neuroinflammation-in-d%C3%A2-galactose-treated-mice
#1
Zhen Zhang, Hanlin Yang, Jingyu Yang, Jun Xie, Jiaoyan Xu, Chen Liu, Chunfu Wu
Oxidative stress and neuroinflammation are thought to be the two key early events during the process of mild cognitive impairment (MCI). Therefore, effective regulation of oxidative stress and neuroinflammation is an important aspect of preventing and improving MCI. We previously found that pseudoginsenoside-F11 (PF11), an ocotillol-type saponin, markedly reduced cognitive impairment in APP/PS1 mice and oAβ1-42 -injected mice. In the present study, we further evaluate the effect of PF11 on learning and memory dysfunction in d‑galactose (d‑gal)-treated mice model of MCI...
December 8, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/30530993/transactivation-of-rage-mediates-angiotensin-induced-inflammation-and-atherogenesis
#2
Raelene J Pickering, Christos Tikellis, Carlos J Rosado, Despina Tsorotes, Alexandra Dimitropoulos, Monique Smith, Olivier Huet, Ruth M Seeber, Rekhati Abhayawardana, Elizabeth Km Johnstone, Jonathan Golledge, Yutang Wang, Karin A Jandeleit-Dahm, Mark E Cooper, Kevin Dg Pfleger, Merlin C Thomas
Activation of the type 1 angiotensin II receptor (AT1) triggers proinflammatory signaling through pathways independent of classical Gq signaling that regulate vascular homeostasis. Here, we report that the AT1 receptor preformed a heteromeric complex with the receptor for advanced glycation endproducts (RAGE). Activation of the AT1 receptor by angiotensin II (Ang II) triggered transactivation of the cytosolic tail of RAGE and NF-κB-driven proinflammatory gene expression independently of the liberation of RAGE ligands or the ligand-binding ectodomain of RAGE...
December 10, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/30513810/dietary-advanced-glycation-endproducts-induce-an-inflammatory-response-in-human-macrophages-in-vitro
#3
Timme van der Lugt, Antje R Weseler, Wouter A Gebbink, Misha F Vrolijk, Antoon Opperhuizen, Aalt Bast
Advanced glycation endproducts (AGEs) can be found in protein- and sugar-rich food products processed at high temperatures, which make up a vast amount of the Western diet. The effect of AGE-rich food products on human health is not yet clear and controversy still exists due to possible contamination of samples with endotoxin and the use of endogenous formed AGEs. AGEs occur in food products, both as protein-bound and individual molecules. Which form exactly induces a pro-inflammatory effect is also unknown...
December 2, 2018: Nutrients
https://www.readbyqxmd.com/read/30445080/glycation-of-hemoglobin-leads-to-the-immunogenicity-as-a-result-of-neo-epitope-generation
#4
Zeba Siddiqui, Mohammad Faisal, Abdulrahman A Alatar, Saheem Ahmad
Non-enzymatic glycation occurs rapidly which ultimately leads to the formation of advanced glycation endproducts (AGEs). These AGEs have shown to associated with the development of many diseases such as diabetes-mellitus. This study is focused on immunological characterization of glycated-Hb induced by d-ribose. Here, we analysed the immunogenicity of glycated-Hb by direct binding and competitive inhibition ELISA. Direct binding ELISA confirmed that glycated-Hb was highly immunogenic and induced high titre antibodies as compared to native-Hb...
November 13, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/30401627/diaphanous-1-affects-the-nanoscale-clustering-and-lateral-diffusion-of-receptor-for-advanced-glycation-endproducts-rage
#5
Qiaochu Zhu, Emily A Smith
The interactions between the cytoplasmic protein diaphanous-1 (Diaph1) and the receptor for advanced glycation endproducts (RAGE) drive the negative consequences of RAGE signaling in several disease processes. Reported in this work is how Diaph1 affects the nanoscale clustering and diffusion of RAGE measured using super-resolution stochastic optical reconstruction microscopy (STORM) and single particle tracking (SPT). Altering the Diaph1 binding site has a different impact on RAGE diffusion compared to when Diaph1 expression is reduced in HEK293 cells...
October 26, 2018: Biochimica et biophysica acta. Biomembranes
https://www.readbyqxmd.com/read/30323247/rage-deficiency-does-not-affect-non-alcoholic-steatohepatitis-and-atherosclerosis-in-western-type-diet-fed-ldlr-mice
#6
Mitchell Bijnen, Nicky Beelen, Suzan Wetzels, José van de Gaar, Maria Vroomen, Erwin Wijnands, Jean L Scheijen, Marjo P H van de Waarenburg, Marion J Gijbels, Jack P Cleutjens, Erik A L Biessen, Coen D A Stehouwer, Casper G Schalkwijk, Kristiaan Wouters
Non-alcoholic fatty liver disease is a spectrum of liver diseases ranging from steatosis only to non-alcoholic steatohepatitis (NASH). The latter is characterized by hepatic inflammation, which increases the risk of cardiovascular disease. It is poorly understood which factors contribute to the onset of hepatic inflammation characterizing the progression from steatosis to NASH. Previously, we demonstrated increased advanced glycation endproducts (AGEs) in the livers of NASH patients. We hypothesise that AGEs play a key role in NASH development by activating their proinflammatory receptor, RAGE...
October 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/30318521/momordica-charantia-extracts-protect-against-inhibition-of-endothelial-angiogenesis-by-advanced-glycation-endproducts-in-vitro
#7
Ali Aljohi, Sabine Matou-Nasri, Donghui Liu, Nadia Al-Khafaji, Mark Slevin, Nessar Ahmed
Diabetes mellitus characterized by hyperglycemia favors formation of advanced glycation endproducts (AGEs) capable of triggering vascular complications by interfering with imbalanced inflammation and angiogenesis to eventually impede wound-healing. Momordica charantia (MC, bitter melon) has been shown to prevent AGE formation and to promote angiogenesis in diabetic wounds in animal models. However, the mechanism underlying its effects on angiogenesis is unclear. We investigated the effects of methanolic extracts of MC pulp (MCP), flesh (MCF) and charantin (active component of MC) using an in vitro model of angiogenesis...
November 14, 2018: Food & Function
https://www.readbyqxmd.com/read/30252878/pharmacologic-control-of-oxidative-stress-and-inflammation-determines-whether-diabetic-glomerulosclerosis-progresses-or-decreases-a-pilot-study-in-sclerosis-prone-mice
#8
Fabrizio Grosjean, Elena M Yubero-Serrano, Feng Zheng, Vittoria Esposito, Shobha Swamy, Sharon J Elliot, Weijing Cai, Helen Vlassara, Fadi Salem, Gary E Striker
Diabetic kidney disease (DKD) is characterized by progressive glomerulosclerosis (GS). ROP mice have a sclerosis-prone phenotype. However, they develop severe, rapidly progressive GS when rendered diabetic. Since GS also develops in aged C57Bl6 mice, and can be reversed using bone marrow from young mice which have lower oxidative stress and inflammation (OS/Infl), we postulated that this might also apply to DKD. Therefore, this pilot study asked whether reducing OS/Infl in young adult sclerosis-prone (ROP) diabetic mice leads to resolution of existing GS in early DKD using safe, FDA-approved drugs...
2018: PloS One
https://www.readbyqxmd.com/read/30246643/glycation-and-hmg-coa-reductase-inhibitors-implication-in-diabetes-and-associated-complications
#9
Rabia Nabi, Sahir Sultan Alvi, Mohd Saeed, Saheem Ahmad, M Salman Khan
INTRODUCTION: Diabetes mellitus (DM) acts as an absolute mediator of cardiovascular risk, prompting the prolonged occurrence, size and intricacy of atherosclerotic plaques via enhanced advanced glycation endproducts (AGEs) formation. Moreover, hyperglycemia is associated with enhanced glyco-oxidized and oxidized low-density lipoprotein (LDL) possessing greater atherogenicity and decreased ability to regulate HMG-CoA reductase (HMG-R). Although aminoguanidine (AG) prevents the AGE-induced protein cross-linking due to its anti-glycation potential, it exerts several unusual pharmaco-toxicological effects thus restraining its desirable therapeutic effects...
September 24, 2018: Current Diabetes Reviews
https://www.readbyqxmd.com/read/30227659/tocotrienol-rich-vitamin-e-from-palm-oil-tocovid-and-its-effects-in-diabetes-and-diabetic-nephropathy-a-pilot-phase-ii-clinical-trial
#10
Suzanne May Quinn Tan, Yilynn Chiew, Badariah Ahmad, Khalid Abdul Kadir
Tocotrienol-rich vitamin E from palm oil (Tocovid) has been shown to ameliorate diabetes through its superior antioxidant, antihyperglycemic, and anti-inflammatory properties in diabetic rats. This study aimed to investigate the effects of Tocovid on diabetic nephropathy in patients with type 2 diabetes. Baseline parameters of potential subjects such as HbA1c, blood pressure, Advanced Glycation Endproduct (AGE), soluble receptor for AGE (sRAGE), Nε-Carboxymethyllysine (Nε-CML), and Cystatin C were assessed for possible correlation with diabetic nephropathy...
September 17, 2018: Nutrients
https://www.readbyqxmd.com/read/30197161/glycemic-reduction-alters-white-blood-cell-counts-and-inflammatory-gene-expression-in-diabetes
#11
Xiang Fang, Brenda Dorcely, Xi-Ping Ding, Shi Yin, Ni-Huiping Son, Shi-Lian Hu, Ira J Goldberg
OBJECTIVE: Systemic inflammation contributes to cardiovascular disease in patients with type 2 diabetes, and elevated white blood cell (WBC) counts are an established risk factor. Our goal is to describe changes in WBCs and inflammatory markers after glycemic reductions in diabetes. RESEARCH DESIGN AND METHODS: This study enrolled 63 subjects with poorly controlled diabetes, defined as hemoglobin A1c (HbA1c) ≥8% [64 mmol/mol]. Circulating granulocytes and mononuclear cells were separated by histopaque double-density protocol...
November 2018: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/30144068/the-s100b-story-from-biomarker-to-active-factor-in-neural-injury
#12
REVIEW
Fabrizio Michetti, Nadia D'Ambrosi, Amelia Toesca, Maria Ausiliatrice Puglisi, Alessia Serrano, Elisa Marchese, Valentina Corvino, Maria Concetta Geloso
S100B is a Ca2+ -binding protein mainly concentrated in astrocytes. Its levels in biological fluids (cerebrospinal fluid, peripheral and cord blood, urine, saliva, amniotic fluid) are recognized as a reliable biomarker of active neural distress. Although the wide spectrum of diseases in which the protein is involved (acute brain injury, neurodegenerative diseases, congenital/perinatal disorders, psychiatric disorders) reduces its specificity, its levels remain an important aid in monitoring the trend of the disorder...
August 24, 2018: Journal of Neurochemistry
https://www.readbyqxmd.com/read/30138107/advanced-glycation-endproducts-and-polysialylation-affect-the-turnover-of-the-neural-cell-adhesion-molecule-ncam-and-the-receptor-for-advanced-glycation-endproducts-rage
#13
Franziska Frank, Veronika Bezold, Kaya Bork, Philip Rosenstock, Jonas Scheffler, Rüdiger Horstkorte
No abstract text is available yet for this article.
September 7, 2018: Biological Chemistry
https://www.readbyqxmd.com/read/30127981/si-tp73-as1-suppressed-proliferation-and-increased-the-chemotherapeutic-response-of-gc-cells-to-cisplatin
#14
Jianjun Peng
Previous studies have revealed that long noncoding RNAs (lncRNAs) function as crucial regulators in various biological processes, including tumorigenesis. Although the expression of lncRNA TP73-antisense RNA1 (AS1) has been identified in hepatocellular carcinoma and glioma, the biological function of TP73-AS1 in gastric cancer (GC) remains unclear. Thus, the present study employed a comprehensive analysis on the function of lncRNA TP73-AS1 in GC. The aim of the present study was to determine the clinical significance and biological function of TP73-AS1 in human GC tissues and cells...
September 2018: Oncology Letters
https://www.readbyqxmd.com/read/30100446/naringenin-a-common-flavanone-inhibits-the-formation-of-ages-in-bread-and-attenuates-ages-induced-oxidative-stress-and-inflammation-in-raw264-7-cells
#15
Jing Teng, Yunlong Li, Wenzhe Yu, Yueliang Zhao, Xiaoqian Hu, Ning-Ping Tao, Mingfu Wang
Dietary flavonoids as popular food additives have attracted a wide range of research interests. Naringenin, a common flavanone, was evaluated of its impact on the formation of advanced glycation endproducts (AGEs) in bread crust. It was found that with the increase of naringenin content in bread (0.25-1% w/w), the formation of CML and total fluorescent AGEs were significantly inhibited (9.67-54.27% and 11.79-35.19%, respectively). In addition, the fortification with naringenin could also significantly inhibit the formation of acrylamide in bread crust, while enhancing the antioxidant and antibacterial activity of bread crumb without bringing undesirable changes to the bread quality attributes...
December 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/30094805/systemic-inflammation-changes-the-site-of-rage-expression-from-endothelial-cells-to-neurons-in-different-brain-areas
#16
Juciano Gasparotto, Camila Tiefensee Ribeiro, Helen Tais da Rosa-Silva, Rafael Calixto Bortolin, Thallita Kelly Rabelo, Daniel Oppermann Peixoto, José Claudio Fonseca Moreira, Daniel Pens Gelain
The receptor for advanced glycation endproducts (RAGE) is a transmembrane, immunoglobulin-like receptor that interacts with a broad repertoire of extracellular ligands. RAGE belongs to a family of cell adhesion molecules and is considered a key receptor in the inflammation axis and a potential contributor to the neurodegeneration. The present study aimed to investigate the content and cell localization of RAGE in the brain of Wistar rats subjected to systemic inflammation induced by a single dose of lipopolysaccharide (LPS, 5 mg/kg, i...
August 9, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/30047241/a-single-high-fat-meal-alters-human-soluble-rage-profiles-and-pbmc-rage-expression-with-no-effect-of-prior-aerobic-exercise
#17
Kelly N Z Fuller, Rudy J Valentine, Edwin R Miranda, Prabhakaran Kumar, Bellur S Prabhakar, Jacob M Haus
A high-fat diet can induce inflammation and metabolic diseases such as diabetes and atherosclerosis. The receptor for advanced glycation endproducts (RAGE) plays a critical role in metabolic disease pathophysiology and the soluble form of the receptor (sRAGE) can mitigate these effects. However, little is known about RAGE in the postprandial condition and the effect of exercise in this context. Thus, we aimed to determine the effects of a single high-fat meal (HFM) with and without prior exercise on peripheral blood mononuclear cell (PBMC) RAGE biology...
July 2018: Physiological Reports
https://www.readbyqxmd.com/read/30014221/structural-effects-of-methylglyoxal-glycation-a-study-on-the-model-protein-mnei
#18
Serena Leone, Jole Fonderico, Chiara Melchiorre, Andrea Carpentieri, Delia Picone
The reaction of free amino groups in proteins with reactive carbonyl species, known as glycation, leads to the formation of mixtures of products, collectively referred to as advanced glycation endproducts (AGEs). These compounds have been implicated in several important diseases, but their role in pathogenesis and clinical symptoms' development is still debated. Particularly, AGEs are often associated to the formation of amyloid deposits in conformational diseases, such as Alzheimer's and Parkinson's disease, and it has been suggested that they might influence the mechanisms and kinetics of protein aggregation...
July 16, 2018: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/30009284/phenolics-from-eugenia-jambolana-seeds-with-advanced-glycation-endproduct-formation-and-alpha-glucosidase-inhibitory-activities
#19
Feifei Liu, Hang Ma, Guihua Wang, Weixi Liu, Navindra P Seeram, Yu Mu, Yingjie Xu, Xueshi Huang, Liya Li
Published data suggest that dietary-derived phenolics exert beneficial effects against hyperglycemia-mediated diseases, such as diabetes, through inhibiting the formation of advanced glycation endproducts (AGEs) and carbohydrate hydrolyzing enzyme activities. In the course of our investigation on the edible berry, Eugenia jambolana (known as Jamun), 21 phenolics (1-21) were isolated and identified from its seeds. Among these, one compound (1) is new and eleven compounds (3, 6, 9-13, 17, and 19-21) are being reported from E...
August 15, 2018: Food & Function
https://www.readbyqxmd.com/read/29977803/effect-of-a%C3%AE-protein-on-inhibiting-proliferation-and-promoting-apoptosis-of-retinal-pigment-epithelial-cells
#20
Zi Ye, Shou-Zhi He, Zhao-Hui Li
AIM: To identify the effect and regulatory mechanism of amyloid β (Aβ) protein on retinal pigment epithelial (RPE) cells in cell proliferation and apoptosis, and clarify Aβ role in the pathogenesis of age-related macular degeneration (AMD). METHODS: The model of Aβ25-35 protein cytotoxicity in RPE cell was successfully established to investigate the effect of Aβ protein on RPE cells in vitro . Based on Aβ protein, the specific inhibitors (HY-50682 or BAY11-7082) or activating agent (lipopolysaccharide) was used to analyze the regulatory mechanism of Aβ protein to RPE cells on cell proliferation and apoptosis by flow cytometry, real-time polymerase chain reaction, Western blotting, enzyme-linked immunosorbent assay and dual-luciferase reporter gene assay...
2018: International Journal of Ophthalmology
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