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Advanced glycation end products

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https://www.readbyqxmd.com/read/28916747/hormetic-potential-of-methylglyoxal-a-side-product-of-glycolysis-in-switching-tumours-from-growth-to-death
#1
Marie-Julie Nokin, Florence Durieux, Justine Bellier, Olivier Peulen, Koji Uchida, David A Spiegel, James R Cochrane, Craig A Hutton, Vincent Castronovo, Akeila Bellahcène
Metabolic reprogramming toward aerobic glycolysis unavoidably favours methylglyoxal (MG) and advanced glycation end products (AGEs) formation in cancer cells. MG was initially considered a highly cytotoxic molecule with potential anti-cancer value. However, we have recently demonstrated that MG enhanced tumour growth and metastasis. In an attempt to understand this dual role, we explored MG-mediated dicarbonyl stress status in four breast and glioblastoma cancer cell lines in relation with their glycolytic phenotype and MG detoxifying capacity...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28916568/perspective-the-paradox-in-dietary-advanced-glycation-end-products-research-the-source-of-the-serum-and-urinary-advanced-glycation-end-products-is-the-intestines-not-the-food
#2
Luanne R DeChristopher
Inconsistent research results have impeded our understanding of the degree to which dietary advanced glycation end products (dAGEs) contribute to chronic disease. Early research suggested that Western-style fast foods, including grilled and broiled meats and French fries, contain high levels of proinflammatory advanced glycation end products (AGEs). However, recent studies with state-of-the-art ultraperformance LC-tandem mass spectrometry (UPLC-MS) found that there is no evidence that these foods have elevated levels of dAGEs relative to other foods...
September 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28915840/evolution-and-bad-prognostic-value-of-advanced-glycation-end-products-after-acute-heart-failure-relation-with-body-composition
#3
Beatriz Paradela-Dobarro, Ángel Fernández-Trasancos, Diana Bou-Teen, Sonia Eiras, Rocío González-Ferreiro, Rosa M Agra, Alfonso Varela-Román, Ana I Castro-Pais, Marcos C Carreira, Felipe F Casanueva, Ezequiel Álvarez, José R González-Juanatey
AIM: The role of advanced glycation end products (AGEs) and their soluble receptor (sRAGE) on the progression and prognosis of acute heart failure (HF) was analysed in relation with metabolic parameters as body composition and nutritional status. METHODS: A hundred and fifty consecutive patients were included in a prospective clinical study during hospitalization by acute HF. Detailed medical history, physical examination, electrocardiogram, echocardiogram and vein peripheral blood were taken for all patients...
September 15, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28914194/diabetic-retinopathy-recent-updates-on-different-biomarkers-and-some-therapeutic-agents
#4
Amjad Ali Khan, Arshad Husain Rahmani, Yousef Homood Aldebasi
BACKGROUND: Diabetic Retinopathy is a leading cause of sight-threatening complication, which occurs due to a number of physiological and metabolic abnormalities during later stages of diabetes. Many of these abnormal changes are consistent with altered oxidative stress, inflammation, genetic set up, advanced glycation end products, and hematological changes. So the altered levels of different biomolecules related to these changes serve as important biomarkers to assess better evaluation and early treatment of this disease...
September 15, 2017: Current Diabetes Reviews
https://www.readbyqxmd.com/read/28914097/advanced-glycation-end-products-interfere-in-luteinizing-hormone-and-follicle-stimulating-hormone-signaling-in-human-granulosa-kgn-cells
#5
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
#6
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/28911644/nephroprotective-effect-of-paeonia-emodi-via-inhibition-of-advanced-glycation-end-products-and-oxidative-stress-in-streptozotocin-nicotinamide-induced-diabetic-nephropathy
#7
Lalit Kishore, Navpreet Kaur, Randhir Singh
The present study aimed to evaluate the effect of alcohol (PA) and hydroalcohol (PHA) extract of Paeonia emodi Royale roots in treatment of streptozotocin-nicotinamide induced diabetic nephropathy. Diabetes mellitus was induced in male Wistar rats by streptozotocin (65 mg/kg intraperitoneally) 15 minutes after nicotinamide (230 mg/kg, intraperitoneally) administration and diabetic nephropathy was assessed by measuring serum glucose, renal parameters (urea, uric acid, creatinine, and blood urea nitrogen level) and lipid profile...
July 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28911546/polyphenols-with-antiglycation-activity-and-mechanisms-of-action-a-review-of-recent-findings
#8
REVIEW
Wan-Ju Yeh, Shih-Min Hsia, Wei-Hwa Lee, Chi-Hao Wu
Advanced glycation end products (AGEs) are substances composed of amino groups of proteins and reducing sugars. The initial and propagation phases of the glycation process are accompanied by the production of a large amount of free radicals, carbonyl species, and reactive dicarbonyl species, of which, methylglyoxal (MG) is the most reactive and can cause dicarbonyl stress, influencing normal physiological functions. In the advanced phase, the production of AGEs and the interaction between AGEs and their receptor, RAGE, are also considered to be among the causes of chronic diseases, oxidative stress, and inflammatory reaction...
January 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28910744/advanced-glycation-end-products-induced-il-6-and-vegf-a-production-and-apoptosis-in-osteocyte-like-mlo-y4-cells-by-activating-rage-and-erk1-2-p38-and-stat3-signalling-pathways
#9
Helin Chen, Wenjia Liu, Xiangnan Wu, Min Gou, Jiefei Shen, Hang Wang
Advanced glycation end products (AGEs) are involved in osteopenia in people with diabetes and the elderly. Interleukin-6 (IL-6) and vascular endothelial growth factor-A (VEGF-A) are potent regulators of bone metabolism, and in bone tissue, osteocytes are an important source of these regulators. However, whether AGEs can directly regulate IL-6 and VEGF-A secretion by osteocytes is unknown. In this study, we evaluated the effect of AGEs on IL-6 and VEGF- A production as well as apoptosis in osteocyte-like MLO-Y4 cells...
September 11, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28906208/pattern-recognition-receptors-signaling-pathways-and-dysregulation-in-canine-chronic-enteropathies-brief-review
#10
Romy M Heilmann, Karin Allenspach
Pattern-recognition receptors (PRRs) are expressed by innate immune cells and recognize pathogen-associated molecular patterns (PAMPs) as well as endogenous damage-associated molecular pattern (DAMP) molecules. With a large potential for synergism or convergence between their signaling pathways, PRRs orchestrate a complex interplay of cellular mediators and transcription factors, and thus play a central role in homeostasis and host defense. Aberrant activation of PRR signaling, mutations of the receptors and/or their downstream signaling molecules, and/or DAMP/PAMP complex-mediated receptor signaling can potentially lead to chronic auto-inflammatory diseases or development of cancer...
September 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28905104/analysis-of-advanced-glycation-end-products-ages-in-dentine-useful-for-age-estimation
#11
Florian Greis, Alexandra Reckert, Katinka Fischer, Stefanie Ritz-Timme
Ageing of the human organism results in the accumulation of modified molecules. Some of these molecular changes may be used for age estimation, as already shown for aspartic acid racemization (AAR). Another example for an accumulation of damaged molecules is advanced glycation end products (AGEs). We examined, (1) if the correlation between the concentration of AGEs (pentosidine) in root dentine and age is close enough to be used as basis for age estimation, and (2) if the combined analysis of AGEs and AAR in dentine may be a useful approach to rule out or to detect relevant effects of confounding factors in age estimation...
September 13, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28903400/hyperglycemia-and-advanced-glycation-end-products-ages-suppress-the-differentiation-of-3t3-l1-preadipocytes
#12
Chia-Chu Chang, Chen-Yu Chen, Geen-Dong Chang, Ting-Huan Chen, Woan-Ling Chen, Hui-Chin Wen, Chih-Yang Huang, Chung-Ho Chang
Aging is characterized by mild hyperglycemia and accumulation of advanced glycation end products (AGEs). Effects of chronic exposure to hyperglycemia or AGEs on the adipogenic differentiation of 3T3-L1 preadipocytes remain unclear. We examined the chronic effect of AGEs and high glucose on the differentiation of 3T3-L1 cells by culturing 3T3-L1 cells in the presence of AGEs or 25 mM glucose for 1 month. Chronic incubation of 3T3-L1 cells with AGEs or high glucose blocked their differentiation into mature adipocytes as evidenced by reduced levels of adipocyte markers such as accumulated oil droplets, GPDH, aP2, adiponectin and of adipogenesis regulators PPARγ and C/EBPα...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28902232/advanced-glycation-end-products-ages-accumulation-in-skin-relations-with-chronic-kidney-disease-mineral-and-bone-disorder
#13
Renata de Almeida França, André de Barros Albuquerque Esteves, Cynthia de Moura Borges, Kélcia Rosana da Silva Quadros, Luiz Carlos Nogueira Falcão, Jacqueline Costa Teixeira Caramori, Rodrigo Bueno de Oliveira
Introduction: Chronic kidney disease (CKD) is associated with high morbidity and mortality rates, main causes related with cardiovascular disease (CVD) and bone mineral disorder (CKD-BMD). Uremic toxins, as advanced glycation end products (AGEs), are non-traditional cardiovascular risk factor and play a role on development of CKD-BMD in CKD. The measurement of skin autofluorescence (sAF) is a noninvasive method to assess the level of AGEs in tissue, validated in CKD patients. Objective: The aim of this study is analyze AGEs measured by sAF levels (AGEs-sAF) and its relations with CVD and BMD parameters in HD patients...
August 28, 2017: Jornal Brasileiro de Nefrologia: ʹorgão Oficial de Sociedades Brasileira e Latino-Americana de Nefrologia
https://www.readbyqxmd.com/read/28901784/impact-of-maillard-reaction-products-on-nutrition-and-health-current-knowledge-and-need-to-understand-their-fate-in-the-human-digestive-system
#14
Nesreen ALJahdali, Franck Carbonero
The Maillard Reaction (MR) is a non-enzymatic chemical reaction which results in the linkage between the amino group of amino acids and the carbonyl group of reduced sugars. MR products (MRPs) are common components of processed foods, mainly as a result of heating, especially in the Western diet. MRPs are classified as into three stages: initial, intermediate, and final stages, indicative of increased complexity and size, incurring different flavor, aroma, and texture. MRPs presence is known to reduce the nutritional quality of foods, particularly by reducing protein digestibility...
September 13, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28901418/profilin%C3%A2-1-contributes-to-cardiac-injury-induced-by-advanced-glycation-end%C3%A2-products-in-rats
#15
Dafeng Yang, Weiwei Liu, Liping Ma, Ya Wang, Jing Ma, Minna Jiang, Xu Deng, Fang Huang, Tianlun Yang, Meifang Chen
Cardiac injury, including hypertrophy and fibrosis, induced by advanced glycation end products (AGEs) has an important function in the onset and development of diabetic cardiomyopathy. Profilin‑1, a ubiquitously expressed and multifunctional actin‑binding protein, has been reported to be an important mediator in cardiac hypertrophy and fibrosis. However, whether profilin‑1 is involved in AGE‑induced cardiac hypertrophy and fibrosis remains to be determined. Therefore, the present study aimed to investigate the function of profilin‑1 in cardiac injury induced by AGEs...
September 8, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28900377/serum-soluble-receptor-of-advanced-glycation-end-products-and-risk-of-metabolic-syndrome-in-egyptian-obese-women
#16
Moushira Zaki, Sanaa Kamal, Shams Kholousi, Hala T El-Bassyouni, Walaa Yousef, Hanaa Reyad, Ramy Mohamed, Walaa A Basha
Obesity is one of the diagnostic criteria of metabolic syndrome (MS). It is correlated with insulin resistance (IR) and high vascular risk as well. Advanced glycation end products (AGEs) and their receptor (RAGE) play an important role in abnormal metabolic components in obese women. This study aimed to explore the serum levels of sRAGE in Egyptian obese women and compare with healthy non-obese controls and investigate the relationship between serum sRAGE, metabolic parameters, and obesity complications. The soluble form of receptor for advanced glycation end products (sRAGE), anthropometry, metabolic and biochemical biomarkers were measured in 100 obese women and 100 age-matched healthy control non-obese women...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28898260/hyperglycemia-related-advanced-glycation-end-products-is-associated-with-the-altered-phosphatidylcholine-metabolism-in-osteoarthritis-patients-with-diabetes
#17
Weidong Zhang, Edward W Randell, Guang Sun, Sergei Likhodii, Ming Liu, Andrew Furey, Guangju Zhai
To test whether type 2 diabetic patients have an elevated level of advanced glycation end-products (AGEs) and responsible for altered phosphatidylcholine metabolism, which we recently found to be associated with osteoarthritis (OA) and diabetes mellitus (DM), synovial fluid (SF) and plasma samples were collected from OA patients with and without DM. Hyperglycemia-related AGEs including methylglyoxal (MG), free methylglyoxal-derived hydroimidazolone (MG-H1), and protein bound N-(Carboxymethyl)lysine (CML) and N-(Carboxyethyl)lysine (CEL) levels were measured in both SF and plasma samples using liquid chromatography coupled tandem mass spectrometry methodology...
2017: PloS One
https://www.readbyqxmd.com/read/28895006/bergenin-increases-osteogenic-differentiation-and-prevents-methylglyoxal-induced-cytotoxicity-in-mc3t3-e1-osteoblasts
#18
Kwang Sik Suh, Suk Chon, Eun Mi Choi
Bergenin, an active component of plants in the genus Bergenia, has multiple biological activities, including anti-inflammatory and immunomodulatory properties. We investigated the effects of bergenin on MC3T3-E1 osteoblasts. Bergenin treatment significantly elevated collagen synthesis, alkaline phosphatase activity, osteocalcin synthesis, and mineralization in the cells (p < 0.05). Additionally, bergenin increased the ratio of osteoprotegerin to receptor activator of nuclear factor kappa-B ligand, and cyclophilin B release...
September 11, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28894049/the-pathophysiological-basis-of-the-protective-effects-of-metformin-in-heart-failure
#19
Aleksandra Dziubak, Grażyna Wójcicka
Metformin, currently recommended as the drug of first choice in type 2 diabetes mellitus (T2DM), is one of the few antihiperglycemic drugs to reduce cardiovascular risk. Nonetheless, due to the risk of lactic acidosis during metformin therapy, its usage in patients with diabetes and heart failure (HF) is still a matter of debate. The aim of this review is to present data supporting the possibility of using metformin in the treatment of diabetic patients with concomitant heart failure. In the failing heart, metformin through the mechanism related to AMP-activated protein kinase (AMPK) activity, improves free fatty acids (FFA) and glucose metabolism, mitochondrial biogenesis, as well as nitric oxide (NO)-NO synthase pathway...
August 24, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/28892789/thymoquinone-rich-fraction-nanoemulsion-tqrfne-decreases-a%C3%AE-40-and-a%C3%AE-42-levels-by-modulating-app-processing-up-regulating-ide-and-lrp1-and-down-regulating-bace1-and-rage-in-response-to-high-fat-cholesterol-diet-induced-rats
#20
Norsharina Ismail, Maznah Ismail, Nur Hanisah Azmi, Muhammad Firdaus Abu Bakar, Zhang Yida, Maizaton Atmadini Abdullah, Hamidon Basri
Though the causes of Alzheimer's disease (AD) are yet to be understood, much evidence has suggested that excessive amyloid-β (Aβ) accumulation due to abnormal amyloid-β precursor protein (APP) processing and Aβ metabolism are crucial processes towards AD pathogenesis. Hence, approaches aiming at APP processing and Aβ metabolism are currently being actively pursued for the management of AD. Studies suggest that high cholesterol and a high fat diet have harmful effects on cognitive function and may instigate the commencement of AD pathogenesis...
September 8, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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