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Glycated albumin

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https://www.readbyqxmd.com/read/28920905/electrochemical-impedance-spectroscopy-on-interdigitated-gold-microelectrodes-for-glycosylated-human-serum-albumin-characterization
#1
Nadra Bohli, Hanen Chammem, Olivier Meilhac, Laurence Mora, Adnane Abdelghani
Glycosylated albumin is considered as a potentially accurate indicator of shorter-term average glucose concentration compared to the current standard HbA1c and as such, it's attracting the interest of the scientific community as a possible diagnosis marker for diabetic patients. The purpose of this paper is to achieve a better understanding of the glycation effect of albumin on its electrochemical properties. That is done through the use of Interdigitated gold microelectrodes (IDGE) as support in a label free impedimetric immunosensor for detection of human serum albumin detection in glycated (GA) and non-glycated (HSA) form...
September 14, 2017: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/28914097/advanced-glycation-end-products-interfere-in-luteinizing-hormone-and-follicle-stimulating-hormone-signaling-in-human-granulosa-kgn-cells
#2
Eleni A Kandaraki, Antonios Chatzigeorgiou, Efstathia Papageorgiou, Christina Piperi, Christos Adamopoulos, Athanasios G Papavassiliou, Michael Koutsilieris, Evanthia Diamanti-Kandarakis
Advanced glycation end products accumulate in the ovarian granulosa-cell layer of women with polycystic ovarian syndrome. Taken that the MAPK/ERK-pathway is a key regulator of oocyte maturation and function, consisting the main pathway used by the gonadotrophic hormones (luteinizing hormone, follicle stimulating hormone) to control ovulation, the present study aims to assess advanced glycation end products' interference into luteinizing hormone-and follicle stimulating hormone-signaling via the MAPK/ERK-pathway in the human granulosa KGN cell line...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28912521/advanced-glycation-end-product-age-albumin-from-activated-macrophage-is-critical-in-human-mesenchymal-stem-cells-survival-and-post-ischemic-reperfusion-injury
#3
Myeongjoo Son, Woong Chol Kang, Seyeon Oh, Delger Bayarsaikhan, Hyosang Ahn, Jaesuk Lee, Hyunjin Park, Sojung Lee, Junwon Choi, Hye Sun Lee, Phillip C Yang, Kyunghee Byun, Bonghee Lee
Post-ischemic reperfusion injury (PIRI) triggers an intense inflammatory response which is essential for repair but is also implicated in pathogenesis of post-ischemic remodeling in several organs in human. Stem cell therapy has recently emerged as a promising method for treatment of PIRI in human. However, satisfactory results have not been reported due to severe loss of injected stem cells in PIRI including critical limb ischemia (CLI). For investigating the advanced glycation end-product-albumin (AGE-albumin) from activated macrophages is critical in both muscle cell and stem cell death, we evaluated the recovery of PIRI-CLI by injection of human bone marrow derived mesenchymal stem cells (hBD-MSCs) with or without soluble receptor for AGEs (sRAGE)...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28888453/effect-of-microwave-and-conventional-heating-on-structural-functional-and-antioxidant-properties-of-bovine-serum-albumin-maltodextrin-conjugates-through-maillard-reaction
#4
Farzaneh Nasrollahzadeh, Mehdi Varidi, Arash Koocheki, Farzin Hadizadeh
In present study, effect of conventional heating (CH) and microwave heating (MH) on Maillard reaction (MR) progression and structural, functional and antioxidant properties of glycated protein was investigated. The glycation process was carried out at 90°C, in bovine serum albumin-maltodextrin system. The extent of glycation was assessed by ortho-phthaldialdehyde and absorbance at 420nm. Afterwards, K-means clustering was applied to classify all treatments into three levels of glycation (low, medium, high)...
October 2017: Food Research International
https://www.readbyqxmd.com/read/28888191/the-effect-of-glycation-on-bovine-serum-albumin-conformation-and-ligand-binding-properties-with-regard-to-gliclazide
#5
Ewa Żurawska-Płaksej, Anna Rorbach-Dolata, Katarzyna Wiglusz, Agnieszka Piwowar
Albumin, the major serum protein, plays a variety of functions, including binding and transporting endogenous and exogenous ligands. Its molecular structure is sensitive to different environmental modifiers, among which glucose is one of the most significant. In vivo albumin glycation occurs under physiological conditions, but it is increased in diabetes. Since bovine serum albumin (BSA) may serve as a model protein in in vitro experiments, we aimed to investigate the impact of glucose-mediated BSA glycation on the binding capacity towards gliclazide, as well as the ability of this drug to prevent glycation of the BSA molecule...
September 6, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28880548/transketolase-a-from-e-coli-significantly-suppresses-protein-glycation-by-glycolaldehyde-and-glyoxal-in-vitro
#6
Alexander Klaus, Thorsten Pfirrmann, Marcus A Glomb
Short-chained carbonyl species such as glycolaldehyde and its oxidized pendant glyoxal are highly reactive Maillard agents, leading to the formation of protein modifications. These advanced glycation endproducts have gained considerable interest as they have been linked to various pathologies in vivo. The ability of transketolase to use glycolaldehyde as a substrate suggested the possibility to modulate carbonyl-driven Maillard reactions. Model incubations with recombinant transketolase A from Escherichia coli in the presence of bovine serum albumin and glycolaldehyde indeed led to a decrease in glycolaldehyde concentrations paralleled by the enzymatic conversion to erythrulose...
September 7, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28873542/fabrication-of-curcumin-loaded-bovine-serum-albumin-bsa-dextran-nanoparticles-and-the-cellular-antioxidant-activity
#7
Yuting Fan, Jiang Yi, Yuzhu Zhang, Wallace Yokoyama
Bovine serum albumin (BSA)-dextran conjugate was prepared with glycation. Self-assembly nanoparticles were synthesized with a green, and facile approach. The effects of dry-heating time on the fabrication and characteristics of BSA-dextran conjugate nanoparticles were examined. Stable nanoparticles (<200nm) were formed after only 6h dry-heating because enough dextran was grafted onto the BSA to provide significant steric hindrance. Particle size decreased with the increase of dry-heating time and the lowest particle size (51...
January 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28860833/novel-biomarkers-for-prediabetes-diabetes-and-associated-complications
#8
REVIEW
Brenda Dorcely, Karin Katz, Ram Jagannathan, Stephanie S Chiang, Babajide Oluwadare, Ira J Goldberg, Michael Bergman
The number of individuals with prediabetes is expected to grow substantially and estimated to globally affect 482 million people by 2040. Therefore, effective methods for diagnosing prediabetes will be required to reduce the risk of progressing to diabetes and its complications. The current biomarkers, glycated hemoglobin (HbA1c), fructosamine, and glycated albumin have limitations including moderate sensitivity and specificity and are inaccurate in certain clinical conditions. Therefore, identification of additional biomarkers is being explored recognizing that any single biomarker will also likely have inherent limitations...
2017: Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy
https://www.readbyqxmd.com/read/28855892/albuminuria-reduction-after-high-dose-of-vitamin-d-in-patients-with-type-1-diabetes-mellitus-a-pilot-study
#9
João Soares Felício, Alana Ferreira de Oliveira, Amanda Soares Peixoto, Ana Carolina Contente Braga de Souza, João Felício Abrahão Neto, Franciane Trindade Cunha de Melo, Carolina Tavares Carvalho, Manuela Nascimento de Lemos, Sávio Diego Nascimento Cavalcante, Fabricio de Souza Resende, Márcia Costa Dos Santos, Ana Regina Motta, Luísa Corrêa Janaú, Elizabeth Sumi Yamada, Karem Miléo Felício
BACKGROUND: Some studies suggest an association between diabetic kidney disease (DKD) and vitamin D (VD), but there is no data about the effect of high dose of VD on DKD in type 1 diabetes mellitus (T1DM). Our pilot study aims to evaluate albuminuria reduction in patients with T1DM supplemented with high dose of VD. METHODS: 22 patients received doses of 4,000 and 10,000 IU/day of cholecalciferol for 12 weeks according to patient's previous VD levels. They were submitted to continuous glucose monitoring system, 24 hours ambulatory blood pressure monitoring and urine albumin-to-creatinine ratio before and after VD supplementation...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28853715/aptasensor-based-optical-detection-of-glycated-albumin-for-diabetes-mellitus-diagnosis
#10
Shreya Ghosh, Debopam Datta, Mehar Cheema, Mitra Dutta, Michael A Stroscio
Glycated Albumin (GA) has been reported as an important biomarker for diabetes mellitus. This study investigates an optical sensor comprised of deoxyribonucleic acid (DNA) aptamer, semiconductor quantum dot and gold (Au) nanoparticle for the detection of GA. The system functions as a 'turn on' sensor because an increase in photoluminescence intensity is observed upon the addition of glycated albumin to the sensor. This is possibly because of the structure of the DNA aptamer, which folds to form a large hairpin loop before the addition of the analyte and is assumed to open up after the addition of target to the sensor in order to bind to GA...
August 30, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28851327/gs-e3d-a-new-pectin-lyase-modified-red-ginseng-extract-inhibited-diabetes-related-renal-dysfunction-in-streptozotocin-induced-diabetic-rats
#11
Chan-Sik Kim, Kyuhyung Jo, Jin Sook Kim, Mi-Kyung Pyo, Junghyun Kim
BACKGROUND: GS-E3D is a newly developed pectin lyase-modified red ginseng extract. The purpose of this study was to investigate the therapeutic effects of GS-E3D on diabetes-related renal dysfunction in streptozotocin-induced diabetic rats. METHOD: GS-E3D (25, 50, and 100 mg/kg body weight per day) was administered for 6 weeks. The levels of blood glucose and hemoglobin A1c, and of urinary albumin, 8-hydroxy-2'-deoxyguanosine (8-OHdG), and advanced glycation end-products (AGEs) were determined...
August 29, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28843828/vinpocetine-mitigates-proteinuria-and-podocytes-injury-in-a-rat-model-of-diabetic-nephropathy
#12
Walaa Wadie, Dalia M El-Tanbouly
Podocyte injury and glomerular basement membrane thickening have been considered as essential pathophysiological events in diabetic nephropathy. The aim of this study was to investigate the possible beneficial effects of vinpocetine on diabetes-associated renal damage. Male Wistar rats were made diabetic by injection of streptozotocin (STZ). Diabetic rats were treated with vinpocetine in a dose of 20mg/kg/day for 6 weeks. Treatment with vinpocetine resulted in a marked decrease in the levels of blood glucose, glycosylated haemoglobin, creatinine, blood urea nitrogen, urinary albumin and albumin/creatinine ratio along with an elevation in creatinine clearance rate...
August 24, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28834701/bilirubin-concentration-is-positively-associated-with-haemoglobin-concentration-and-inversely-associated-with-albumin-to-creatinine-ratio-among-indigenous-australians-egfr-study
#13
J T Hughes, F Barzi, W E Hoy, G R D Jones, G Rathnayake, S W Majoni, M A B Thomas, A Sinha, A Cass, R J MacIsaac, K O'Dea, L J Maple-Brown
Low serum bilirubin concentrations are reported to be strongly associated with cardio-metabolic disease, but this relationship has not been reported among Indigenous Australian people who are known to be at high risk for diabetes and chronic kidney disease (CKD). HYPOTHESIS: serum bilirubin will be negatively associated with markers of chronic disease, including CKD and anaemia among Indigenous Australians. METHOD: A cross-sectional analysis of 594 adult Aboriginal and Torres Strait Islander (TSI) people in good health or with diabetes and markers of CKD...
August 20, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28828040/association-between-aerobic-capacity-and-the-improvement-in-glycemic-control-after-the-exercise-training-in-type-2-diabetes
#14
Hideki Nojima, Masayasu Yoneda, Hiroshi Watanabe, Kiminori Yamane, Yoshihiro Kitahara, Kiyokazu Sekikawa, Hideya Yamamoto, Akihito Yokoyama, Noboru Hattori, Nobuoki Kohno
BACKGROUND: We investigated the influence of aerobic capacity on the improvement in glycemic control achieved by long-term aerobic exercise in type 2 diabetes. METHODS: Fifty-three male patients with type 2 diabetes, recruited from outpatient clinics, wore multiple-memory accelerometers and were instructed to exercise at moderate intensity for ≥30 min on ≥3 days per week over 12 months. Peak oxygen uptake (peak [Formula: see text]) and serum glycated albumin (GA) were measured at baseline and after 3, 6, 12 months...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/28819562/re-evaluation-of-glycated-hemoglobin-and-glycated-albumin-with-continuous-glucose-monitoring-system-as-markers-of-glycemia-in-patients-with-liver-cirrhosis
#15
Hiroshi Isoda, Hirokazu Takahashi, Yuichiro Eguchi, Motoyasu Kojima, Kanako Inoue, Kenichiro Murayama, Yayoi Matsuda, Keizo Anzai
[This retracts the article DOI: 10.3892/br.2016.808.].
September 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28818597/is-there-a-j-shaped-relationship-between-the-fatty-liver-index-and-risk-of-microalbuminuria-in-the-general-population
#16
Jong Wook Choi, Il Hwan Oh, Chang Hwa Lee, Joon-Sung Park
BACKGROUND: We investigated whether the fatty liver index (FLI), as a clinical indicator of hepatic fat accumulation based on body mass index, gamma-glutamyl-transferase, triglycerides, and waist circumference, has an association with microalbuminuria. METHODS: We analyzed anthropometric and biochemical data from a nation-wide, population-based, cross-sectional study. A total of 1605 participants included were healthy native Korean 40years or older and divided into quintiles according to their log-FLI and sex...
August 14, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28817230/recent-findings-on-fulminant-type-1-diabetes
#17
REVIEW
Lan Liu, Ling Zeng, Dan Sang, Zeyuan Lu, Jie Shen
Fulminant type 1 diabetes (fT1D) is a new subtype of type 1 diabetes proposed by Imagawa in 2000. It is a clinical syndrome characterized by a markedly rapid and almost complete destruction of pancreatic β cells. Metabolic derangement is more severe in this subtype than in autoimmune type 1 diabetes. The incidence of fT1D is associated with HLA DRB1*04:05DQB1*04:01, both innate and acquired immune disorders might contribute to the development of fT1D. The presence of specific innate immune responses to enterovirus infection connected with enhanced adoptive immune pathways responsible for aggressive β cell toxicity in fT1D...
August 17, 2017: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/28816938/advanced-glycation-end-products-promote-chrebp-expression-and-cell-proliferation-in-liver-cancer-cells-by-increasing-reactive-oxygen-species
#18
Hanbei Chen, Yakui Li, Yemin Zhu, Lifang Wu, Jian Meng, Ning Lin, Dianqiang Yang, Minle Li, WenJin Ding, Xuemei Tong, Qing Su
The aim of the study was to elucidate the mechanism by which advanced glycation end products (AGEs) promote cell proliferation in liver cancer cells.We treated liver cancer HepG2 cells with 200 mg/L AGEs or bovine serum albumin (BSA) and assayed for cell viability, cell cycle, and apoptosis. We performed real-time PCR and Western blot analysis for RNA and protein levels of carbohydrate responsive element-binding protein (ChREBP) in AGEs- or BSA-treated HepG2 cells. We analyzed the level of reactive oxygen species (ROS) in HepG2 cells treated with AGEs or BSA...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28814103/annals-express-associations-between-glycaemic-control-and-activation-of-the-renin-angiotensin-aldosterone-system-in-participants-with-type-2-diabetes-mellitus-and-hypertension
#19
Tomas Patrick Griffin, Deirdre Wall, Gerard A Browne, Michael C Dennedy, Paula O'Shea
INTRODUCTION: Hyperglycaemia increases succinate levels and succinate receptor (GPR91) activation in the kidney resulting in renin release. The aim of our study was to determine if there is an association between glycaemic control as evidenced by glycated haemoglobin (HbA1c) values and activation of the renin-angiotensin-aldosterone-system in patients with type 2 diabetes mellitus (T2DM) and hypertension. METHODS: A cross-sectional study was conducted at Galway University Hospitals between December 2014 and March 2015...
January 1, 2017: Annals of Clinical Biochemistry
https://www.readbyqxmd.com/read/28812216/an-overview-of-in-vitro-and-in-vivo-glycation-of-albumin-a-potential-disease-marker-in-diabetes-mellitus
#20
REVIEW
Km Neelofar, Jamal Ahmad
Non-enzymatic glycation of macromolecules, especially proteins leading to their oxidation is increased in diabetes mellitus due to hyperglycaemia and play an important role in associated complications of the disease. Protein glycation mostly occurs in intra chain lysine residues resulting in the formation of early stage Amadori products which are finally converted to advance glycation end products (AGEs). This review deals with the structural studies of in vitro and in vivo glycated human serum albumin (HSA)...
August 15, 2017: Glycoconjugate Journal
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