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Glycated albumin

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https://www.readbyqxmd.com/read/29150049/generation-of-advanced-glycation-end-products-ages-by-glycoxidation-mediated-by-copper-and-ros-in-a-human-serum-albumin-hsa-model-peptide-reaction-mechanism-and-damage-in-motor-neuron-cells
#1
Caroline Martins Sandanielo Marques, Emilene Arusievicz Nunes, Larissa Lago, Cibele Nicolaski Pedron, Tânia Maria Manieri, Roseli Hiromi Sato, Vani Xavier Oliveira, Giselle Cerchiaro
Glucose, in the presence of reactive oxygen species (ROS), acts as an as an oxidative agent and drives deleterious processes in Diabetes Mellitus. We have studied the mechanism and the toxicological effects of glucose-dependent glycoxidation reactions driven by copper and ROS, using a model peptide based on the exposed sequence of Human Serum Albumin (HSA) and containing a lysine residue susceptible to copper complexation. The main products of these reactions are Advanced Glycation End-products (AGEs). Carboxymethyl lysine and pyrraline condensed on the model peptide, generating a Modified Peptide (MP)...
December 2017: Mutation Research
https://www.readbyqxmd.com/read/29147074/increased-levels-of-srage-in-diabetic-ckd-g5d-patients-a-potential-protective-mechanism-against-age-related-upregulation-of-fibroblast-growth-factor-23-and-inflammation
#2
Elena Dozio, Valentina Corradi, Elena Vianello, Elisa Scalzotto, Massimo de Cal, Massimiliano Marco Corsi Romanelli, Claudio Ronco
Advanced glycation end products (AGEs) may induce cardiac remodeling in kidney disease by promoting fibroblast growth factor 23 (FGF-23) expression. Since AGEs are increased in diabetes mellitus (DM), our first aim was to evaluate the existence of any potential association between AGEs, FGF-23, inflammation, and increased cardiovascular risk in DM patients on dialysis (CKD-G5D). Secondarily, we explored the potential role of the soluble receptor for AGEs (sRAGE) as a marker of heart failure. Levels of glycated albumin (GA), sRAGE, c-terminal FGF-23 (cFGF-23), brain natriuretic peptide (BNP), and inflammatory mediators were compared between DM and non-DM CKD-G5D patients...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/29142952/serum-ngal-and-cystatin-c-comparison-with-urinary-albumin-to-creatinine-ratio-and-inflammatory-biomarkers-as-early-predictors-of-renal-dysfunction-in-patients-with-type-2-diabetes
#3
Marcelo R Bacci, Ethel Z Chehter, Ligia A Azzalis, Beatriz Costa de Aguiar Alves, Fernando L A Fonseca
Introduction: Diabetic nephropathy is associated with specific histological changes. Early detection of poor glomerular and tubular function can be achieved with biomarkers of diabetes. The aim of this study was to evaluate the accuracy of kidney dysfunction biomarkers in type 2 diabetes (T2D). Methods: Patients with T2D were grouped according to their glycated hemoglobin level. Patients' urine and blood samples were taken to measure cystatin C (CysC), neutrophil gelatinase-associated lipocalin, beta-trace protein levels, and the first morning void albumin-to-creatinine ratio...
March 2017: KI Reports
https://www.readbyqxmd.com/read/29142432/inhibition-of-glycation-induced-cytotoxicity-protein-glycation-and-activity-of-proteolytic-enzymes-by-extract-from-perovskia-atriplicifolia-roots
#4
Mehran Miroliaei, Akram Aminjafari, Sylwester Ślusarczyk, Izabela Nawrot-Hadzik, Mehdi Rahimmalek, Adam Matkowski
Background: Protein glycation and glycotoxicity belong to the main oxidative-stress related complications in diabetes. Perovskia species are used in Asian folk medicine as antidiabetic herbs. Objective: The aim of this study was to verify the ability of the methanolic extract from Perovskia atriplicifolia Benth. roots to diminish glycation of albumin and to prevent cell damage in vitro. Furthermore, we tested the extract for in vitro antioxidant activity and inhibition of elastase and collagenase...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29133805/xanthine-oxidoreductase-activity-is-associated-with-serum-uric-acid-and-glycemic-control-in-hemodialysis-patients
#5
Ayumi Nakatani, Shinya Nakatani, Eiji Ishimura, Takayo Murase, Takashi Nakamura, Mari Sakura, Yu Tateishi, Akihiro Tsuda, Masafumi Kurajoh, Katsuhito Mori, Masanori Emoto, Masaaki Inaba
Xanthine oxidoreductase activity (XOR-a) plays an important role as a pivotal source of reactive oxygen species. In the present study, we investigated factors associated with plasma XOR-a in 163 hemodialysis patients (age 67.3 ± 10.9 years; 89 males and 74 females), using a newly established, highly-sensitive assay based on [(13)C2,(15)N2] xanthine and liquid chromatography/triple quadrupole mass spectrometry. Plasma glucose and serum uric acid levels correlated significantly and positively with plasma XOR-a...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29133088/fructose-human-serum-albumin-interaction-undergoes-numerous-biophysical-and-biochemical-changes-before-forming-ages-and-aggregates
#6
Asif Zaman, Zarina Arif, Moinuddin, Khursheed Alam
Fructose is a reducing and highly lipogenic sugar that has unique metabolic effects in the liver. Non-enzymatic fructosylation of proteins generates advanced glycation end products (AGEs). Human serum albumin (HSA) may undergo fructosylation vis-à-vis AGEs formation. High fructose consumption may lead to structurally altered and functionally compromised fructosylated-HSA-AGEs, which can cause damage to hepatocytes resulting in hepatic macro- and microvesicular steatosis. In this study, HSA was incubated with varying concentrations of fructose for 10days and the induced changes were studied...
November 10, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29121708/factors-associated-with-a-prolonged-length-of-hospital-stay-in-patients-with-diabetic-foot-a-single-center-retrospective-study
#7
Sang Kyu Choi, Cheol Keun Kim, Dong In Jo, Myung Chul Lee, Jee Nam Kim, Hyun Gon Choi, Dong Hyeok Shin, Soon Heum Kim
Background: We conducted this study to identify factors that may prolong the length of the hospital stay (LHS) in patients with diabetic foot (DF) in a single-institution setting. Methods: In this single-center retrospective study, we evaluated a total of 164 patients with DF, and conducted an intergroup comparison of their baseline demographic and clinical characteristics, including sex, age, duration of diabetes, smoking status, body mass index, underlying comorbidities (e...
November 10, 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/29114672/the-critical-role-of-dimer-formation-in-monosaccharides-binding-to-human-serum-albumin
#8
Prapasiri Pongprayoon, Toshifumi Mori
Human serum albumin (HSA) is the most abundant transport protein found in human blood. HSA is known to bind a wide range of drugs and monosaccharides, but where and how these molecules bind are largely unknown. Recently, a crystal structure of glycated HSA has been reported, and interestingly, in that structure two glucose molecules have been located in pyranose (GLC) and open chain (GLO) forms bound in the same binding pocket (Sudlow site I). Molecular simulations also proposed two binding modes of GLC and GLO (binding two ligands either in a distant location or in close contact)...
November 8, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29106815/high-dose-glucocorticoids-treatment-does-not-induce-severe-hyperglycemia-in-young-patients-with-autoimmune-diseases-by-cgms
#9
Ying Zhou, Yan Zhao, Tao Yuan, Nan Jiang, Yingyue Dong, Yunjiao Yang, Li Wang, Jiuliang Zhao, Le Min, Weigang Zhao
INTRODUCTION: High-dose glucocorticoids (HDG) are used in the treatment of autoimmune diseases. Glucocorticoids-induced hyperglycemia (GIH) is often described in elderly patients. In young patients with autoimmune diseases, however, the risk for GIH has not been well characterized. METHODS: Twenty-four inpatients (median age 32 years (interquatile range 25-42)) with exacerbations of autoimmune diseases, receiving 1-2mg/kg/day prednisone or equivalent methylprednisone, were recruited...
November 6, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29104592/comparative-agreement-analysis-of-differences-in-1-5-anhydroglucitol-glycated-albumin-and-glycated-hemoglobin-a1c-levels-between-fasting-and-postprandial-states-in-steamed-bread-meal-test
#10
Hang Su, Yufei Wang, Xiaojing Ma, Xingxing He, Lingwen Ying, Junling Tang, Lu Dong, Yuqian Bao, Jian Zhou, Weiping Jia
Background: Our previous study indicated that serum 1,5-anhydroglucitol (1,5-AG) levels slightly increased after a glucose load; therefore, this study was conducted to explore short-term changes in 1,5-AG levels after a steamed bread meal test (SBMT) and compare the agreement of 1,5-AG, glycated albumin (GA), and glycated hemoglobin A1c (HbA1c) levels between fasting and postprandial states after an SBMT. Methods: 104 participants were recruited and underwent a 100 g SBMT...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/29097054/age-albumin-enhances-abca1-degradation-by-ubiquitin-proteasome-and-lysosomal-pathways-in-macrophages
#11
Rodrigo Tallada Iborra, Adriana Machado-Lima, Ligia Shimabukuro Okuda, Paula Ramos Pinto, Edna Regina Nakandakare, Ubiratan Fabres Machado, Maria Lucia Correa-Giannella, Russell Pickford, Tom Woods, Margaret A Brimble, Kerry-Anne Rye, Rui Lu, Shinji Yokoyama, Marisa Passarelli
BACKGROUND AND AIMS: Advanced glycation end products (AGEs) induce cellular oxidative/endoplasmic reticulum stress and inflammation. We investigated its underlying mechanisms for atherogenesis focusing on regulation of ABCA1 protein decay in macrophages. METHODS: The ABCA1 decay rate was evaluated in macrophages after treatment with LXR agonist and by incubation with control (C) or AGE-albumin concomitant or not with cycloheximide, MG-132, ammonium chloride and calpain inhibitors were utilized to inhibit, respectively, proteasome, lysosome and ABCA1 proteolysis at cell surface...
September 23, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/29074084/monitoring-the-protective-ability-of-thymoquinone-mixture-with-p-cymene-against-bovine-serum-albumin-bsa-glycation-mcr-als-analysis-based-on-combined-spectroscopic-and-electrochemical-methods
#12
Ali Benvidi, Masoud Rezaeinasab, Sajjad Gharaghani, Saleheh Abbasi
Protein glycation with sugars such as glucose start by the initial reaction between the carbonyl group of sugars and the amino group of proteins such as albumin and hemoglobin. This leads to the generation of Schiff base and following that the amadori and advanced glycation end products (AGEs). AGEs products can store in tissues and blood of diabetic patients. So, they play key roles to generate free radicals, which cause the development of diabetes complications. Inhibition of protein glycation plays an important role in controlling diabetes, so the identification of anti-glycation compounds is now receiving considerable interest...
October 23, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29070458/-receptor-for-advanced-glycation-end-products-upregulates-muc5ac-expression-and-promotes-mucus-overproduction-in-mice-with-toluene-diisocyanate-induced-asthma
#13
Jing Xiong, Wen-Qu Zhao, Guo-Hua Huang, Li-Hong Yao, Hang-Ming Dong, Chang-Hui Yu, Hai-Jin Zhao, Shao-Xi Cai
OBJECTIVE: To explore the role of the receptor for advanced glycation end products (RAGE) in regulating the expression of MUC5AC and mucus production in a mouse model of toluene diisocyanate (TDI)?induced asthma. METHODS: BALB/c mice were randomly divided into control group, vehicle (AOO) group, TDI?induced asthma group and RAGE inhibitor (FPS?ZM1) group. PAS staining, Western blotting, and immunohistochemistry were used to analyze the changes in mucus production and MUC5AC expression in the airway of the mice, and the expression of p?ERK was detected with Western blotting...
October 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/29065839/anthranilic-acid-derivatives-novel-inhibitors-of-protein-glycation-and-the-associated-oxidative-stress-in-the-hepatocytes
#14
Humera Jahan, Muhammad Iqbal Choudhary, Amber Atta, Khalid Mohammad Khan, Atta-Ur- Rahman
BACKGROUND: Anthranilic acid derivatives are important pharmacophores in drug discovery. Several of them are currently used drugs, such as mefenamic acid and meclofenamates, possess analgesic, anti-inflammatory, and antipyretic activities. Some anthranilic acid-based scaffolds have also been reported for the management of metabolic disorders. OBJECTIVES: The aim of the current study was to investigate the antiglycation potential of anilino benzoic acid derivatives against fructose- human serum albumin (HSA) glycation...
October 20, 2017: Medicinal Chemistry
https://www.readbyqxmd.com/read/29061312/an-additional-measurement-of-glycated-albumin-can-help-prevent-missed-diagnosis-of-diabetes-in-chinese-population
#15
Xingxing He, Lingwen Ying, Xiaojing Ma, Yun Shen, Hang Su, Jiahui Peng, Yufei Wang, Yuqian Bao, Jian Zhou, Weiping Jia
BACKGROUND: In subjects who present a first fasting plasma glucose (FPG1) ≥7.0mmol/l without classic symptoms of diabetes, diagnosis of diabetes will likely be missed without an additional oral glucose tolerance test (OGTT) in the Chinese population. Recent studies have shown that glycated albumin (GA) has advantages in reflecting postprandial hyperglycemia. Therefore, the present study evaluated whether additional measurement of GA could reduce the rate of missed diagnosis of diabetes...
October 20, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29057494/a-decrease-in-serum-1-5-anhydroglucitol-levels-is-associated-with-the-presence-of-a-first-degree-family-history-of-diabetes-in-a-chinese-population-with-normal-glucose-tolerance
#16
X Hu, X He, X Ma, H Su, L Ying, J Peng, Y Wang, Y Bao, J Zhou, W Jia
AIM: This study aimed to investigate alterations in HbA1c , glycated albumin (GA) and 1,5-anhydroglucitol (1,5-AG) in Chinese first-degree relatives of individuals with diabetes (FDR) in pursuit of an index for early screening of glucose metabolism disturbance. METHODS: A total of 467 participants (age range: 20-78 years) with normal weight and normal glucose tolerance, as determined by a 75-g oral glucose tolerance test, were enrolled. HbA1c was measured using high-pressure liquid chromatography...
October 23, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/29055090/performance-of-nontraditional-hyperglycemia-biomarkers-by-chronic-kidney-disease-status-in-older-adults-with-diabetes-results-from-the-atherosclerosis-risk-in-communities-study
#17
Molly Jung, Bethany Warren, Morgan Grams, Yuenting Diana Kwong, Tariq Shafi, Josef Coresh, Casey M Rebholz, Elizabeth Selvin
BACKGROUND: In persons with chronic kidney disease (CKD), hemoglobin A1c (HbA1c) may be a problematic measure of glycemic control. Glycated albumin and fructosamine have been proposed as better markers of hyperglycemia in CKD. We investigated associations of HbA1c, glycated albumin, and fructosamine with fasting glucose by CKD categories. METHODS: Cross-sectional analysis of 1,665 Atherosclerosis Risk in Communities Study participants with diagnosed diabetes aged 65 years or older...
October 20, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/29052590/reversing-the-tide-diagnosis-and-prevention-of-t2dm-in-populations-of-african-descent
#18
REVIEW
Jean N Utumatwishima, Stephanie T Chung, Amy R Bentley, Margaret Udahogora, Anne E Sumner
Populations of African descent are at the forefront of the worldwide epidemic of type 2 diabetes mellitus (T2DM). The burden of T2DM is amplified by diagnosis after preventable complications of the disease have occurred. Earlier detection would result in a reduction in undiagnosed T2DM, more accurate statistics, more informed resource allocation and better health. An underappreciated factor contributing to undiagnosed T2DM in populations of African descent is that screening tests for hyperglycaemia, specifically, fasting plasma glucose and HbA1c, perform sub-optimally in these populations...
October 23, 2017: Nature Reviews. Endocrinology
https://www.readbyqxmd.com/read/29051218/stress-hyperglycemia-and-prognosis-of-minor-ischemic-stroke-and-transient-ischemic-attack-the-chance-study-clopidogrel-in-high-risk-patients-with-acute-nondisabling-cerebrovascular-events
#19
RANDOMIZED CONTROLLED TRIAL
Yuesong Pan, Xueli Cai, Jing Jing, Xia Meng, Hao Li, Yongjun Wang, Xingquan Zhao, Liping Liu, David Wang, S Claiborne Johnston, Tiemin Wei, Yilong Wang
BACKGROUND AND PURPOSE: We aimed to determine the association between stress hyperglycemia and risk of new stroke in patients with a minor ischemic stroke or transient ischemic attack. METHODS: A subgroup of 3026 consecutive patients from 73 prespecified sites of the CHANCE trial (Clopidogrel in High-Risk Patients With Acute Nondisabling Cerebrovascular Events) were analyzed. Stress hyperglycemia was measured by glucose/glycated albumin (GA) ratio. Glucose/GA ratio was calculated by fasting plasma glucose divided by GA and categorized into 4 even groups according to the quartiles...
November 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29051099/hyperglycemia-induced-reactive-species-trigger-structural-changes-in-human-serum-albumin-of-type-1-diabetic-subjects
#20
Zarina Arif, Km Neelofar, Mir Yasir Arfat, Asif Zaman, Akhlas Tarannum, Iffat Parveen, Shafeeque Ahmad, Md Adnan Khan, Asim Badar, Shireen Naaz Islam
Chronic oxidative stress fuels pathogenesis of a large set of diseases. Oxidative stress is the cause and consequence of numerous diseases including type 1 diabetes mellitus (T1DM), in which there is selective destruction of insulin producing pancreatic β-cells. Studies have documented that hyperglycemia produces profound stress. In vivo production of numerous reactive oxygen, nitrogen, chlorine species and lipid/sugar oxidation products are result of persistent hyperglycemia. Post-translational modifications by reactive species may create new antigenic epitopes and play a role in the development of autoimmune response...
October 16, 2017: International Journal of Biological Macromolecules
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