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Advanced glycation endproduct

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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
https://www.readbyqxmd.com/read/29936054/traditional-medicines-used-by-q-eqchi-maya-to-treat-diabetic-symptoms-and-their-antiglycation-potential
#14
J Ferrier, A Saleem, A Carter Ramirez, R Liu, E Chen, T Pesek, V Cal, M Balick, J T Arnason
ETHNOPHARMACOLOGICAL RELEVANCE: Because of the recent increase in type 2 diabetes and the need for complementary treatments in remote communities in many parts of the world, we undertook a study of treatments for diabetic symptoms used by traditional Q'eqchi' Maya healers of Belize. We used quantitative ethnobotany to rank culturally important taxa and subsequent pharmacological and phytochemical studies to assess bioactivity. MATERIALS AND METHODS: Antidiabetic plants identified in field interviews with traditional healers were ranked by syndromic importance value (SIV) based on 15 symptoms of diabetes...
October 5, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29906314/gromwell-lithospermum-erythrorhizon-root-extract-protects-against-glycation-and-related-inflammatory-and-oxidative-stress-while-offering-uv-absorption-capability
#15
Kelly M Glynn, Penny Anderson, David J Fast, James Koedam, John F Rebhun, Rodney A Velliquette
Glycation and advanced glycation end products (AGE) damage skin which is compounded by AGE-induced oxidative stress and inflammation. Lip and facial skin could be susceptible to glycation damage as they are chronically stressed. As Gromwell (Lithospermum erythrorhizon) root (GR) has an extensive traditional medicine history that includes providing multiple skin benefits, our objective was to determine whether GR extract and its base naphthoquinone, shikonin, might protect skin by inhibiting glycation, increasing oxidative defenses, suppressing inflammatory responses and offering ultraviolet (UV) absorptive potential in lip and facial cosmetic matrices...
September 2018: Experimental Dermatology
https://www.readbyqxmd.com/read/29900561/rage-dependent-vcam-1-expression-in-the-lung-endothelium-mediates-il-33-induced-allergic-airway-inflammation
#16
Timothy N Perkins, Elizabeth A Oczypok, Pavle S Milutinovic, Regina E Dutz, Tim D Oury
BACKGROUND: The receptor for advanced glycation endproducts (RAGE) has been implicated as a critical molecule in the pathogenesis of experimental asthma/allergic airway inflammation (AAI). It has been previously shown that RAGE acts both upstream of interleukin-33 (IL-33) release and downstream of IL-33 release via RAGE-dependent IL-33 induced accumulation of type 2 innate lymphoid cells (ILC2s) in the lungs, which perpetuate type 2 inflammation and mucus metaplasia. However, the mechanism by which RAGE mediates downstream IL-33 induced type 2 inflammatory responses is unknown...
June 14, 2018: Allergy
https://www.readbyqxmd.com/read/29896433/apx3330-promotes-neurorestorative-effects-after-stroke-in-type-one-diabetic-rats
#17
Tao Yan, Poornima Venkat, Michael Chopp, Alex Zacharek, Peng Yu, Ruizhuo Ning, Xiaoxi Qiao, Mark R Kelley, Jieli Chen
APX3330 is a selective inhibitor of APE1/Ref-1 redox activity. In this study, we investigate the therapeutic effects and underlying mechanisms of APX3330 treatment in type one diabetes mellitus (T1DM) stroke rats. Adult male Wistar rats were induced with T1DM and subjected to transient middle cerebral artery occlusion (MCAo) and treated with either PBS or APX3330 (10mg/kg, oral gavage) starting at 24h after MCAo, and daily for 14 days. Rats were sacrificed at 14 days after MCAo and, blood brain barrier (BBB) permeability, ischemic lesion volume, immunohistochemistry, cell death assay, Western blot, real time PCR, and angiogenic ELISA array were performed...
June 2018: Aging and Disease
https://www.readbyqxmd.com/read/29877948/inhibition-of-mir-25-aggravates-diabetic-peripheral-neuropathy
#18
Yanzhuo Zhang, Chunyu Song, Jing Liu, Yonghong Bi, Hao Li
The hyperglycemia-induced enhanced oxidative stress is a key factor of diabetic peripheral neuropathy implicated in the pathogenesis of diabetic neuropathy, and microRNA may be involved, playing promotion or protection roles. In this study, we aimed to investigate the function of miR-25 during the development of oxidative/nitrative stress and in subsequent neurological problems. We detected the oxidative stress effects and expression of miR-25 on sciatic nerves from db/db diabetic model mice and analyzed the expression of related genes by qPCR and Western blotting...
August 1, 2018: Neuroreport
https://www.readbyqxmd.com/read/29872802/steamed-bread-enriched-with-quercetin-as-an-antiglycative-food-product-its-quality-attributes-and-antioxidant-properties
#19
Jing Lin, Yuan Xin Gwyneth Tan, Lai Peng Leong, Weibiao Zhou
Quercetin, a natural antiglycative agent, was incorporated into steamed bread to produce a functional food that has high potential to lower the risk of diabetes. With the incorporation of quercetin at 1.20, 2.40, and 3.60%, the volume of steamed bread significantly decreased and the hardness of the crumb correspondingly increased with incremental quercetin content, while incorporation levels below 1.20% had no impact. Within this range of enrichment (1.2-3.6%), quercetin negatively affected the yeast activity with significantly less CO2 produced in dough during proofing...
June 20, 2018: Food & Function
https://www.readbyqxmd.com/read/29851842/soluble-levels-of-receptor-for-advanced-glycation-endproducts-and-dysfunctional-high-density-lipoprotein-in-persons-infected-with-human-immunodeficiency-virus-actg-nwcs332
#20
Theodoros Kelesidis, Michelle A Kendall, Ann Danoff, Judith A Aberg, Judith S Currier, Ann Marie Schmidt
The role of high-density lipoprotein (HDL) function and advanced glycation end products (AGEs) in HIV-related atherosclerotic cardiovascular disease (CVD) is unclear. Both glycation and oxidation (HDLox) are major modifications of HDL that can alter its composition and function. Therefore, we explored the longitudinal association of HDLox with progression of glycation, as evaluated by measurement of circulating forms of receptor for AGE that predict morbidity (soluble Receptors for Advanced Glycation Endproducts [sRAGE], endogenous secretory Receptors for Advanced Glycation Endproducts [esRAGE]), in people with HIV-1 (PWH; HIV-1) and uninfected (HIV-1) individuals...
June 2018: Medicine (Baltimore)
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