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Advanced glycation end products

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https://www.readbyqxmd.com/read/28108276/hydrogen-sulfide-reduces-rage-toxicity-through-inhibition-of-its-dimer-formation
#1
Hong Zhou, Lei Ding, Zhiyuan Wu, Xu Cao, Qichun Zhang, Li Lin, Jin-Song Bian
RAGE is important in the development of neurodegenerative diseases. The present study was designed to investigate the effect of hydrogen sulfide (H2S, an endogenous gaseous mediator) on the cytotoxicity caused by RAGE activation during the chronic oxidative stress. Aβ1-42 decreased cell viability and induced cell senescence in SH-SY5Y cells. Treatment with advanced glycation end products (AGEs) induced cell injury in HEK293 cells stably expressing RAGE (HEK293-RAGE) and stimulated inflammatory responses in SH-SY5Y cells...
January 17, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28107623/dna-advanced-glycation-end-products-dna-ages-are-elevated-in-urine-and-tissue-in-an-animal-model-of-type-2-diabetes
#2
Richard Jaramillo, Sarah C Shuck, Yin S Chan, Xueli Liu, Steven E Bates, Punnajit P Lim, Daniel Tamae, Sandrine Lacoste, Timothy R O'Connor, John Stephen Termini
More precise identification and treatment monitoring of prediabetic/diabetic individuals will require additional biomarkers to complement existing diagnostic tests. Candidates include hyperglycemia-induced adducts such as advanced glycation end products (AGEs) of proteins, lipids, and DNA. The potential for DNA-AGEs as diabetic biomarkers was examined in a longitudinal study using the Leprdb/db animal model of metabolic syndrome. The DNA-AGE, N2-(1-carboxyethyl)-2´-deoxyguanosine (CEdG) was quantified by mass spectrometry using isotope dilution from urine and tissue of hyperglycemic and normoglycemic mice...
January 20, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/28106778/methylglyoxal-glyoxalase-1-balance-the-root-of-vascular-damage
#3
REVIEW
Cecilia Nigro, Alessia Leone, Gregory Alexander Raciti, Michele Longo, Paola Mirra, Pietro Formisano, Francesco Beguinot, Claudia Miele
The highly reactive dicarbonyl methylglyoxal (MGO) is mainly formed as byproduct of glycolysis. Therefore, high blood glucose levels determine increased MGO accumulation. Nonetheless, MGO levels are also increased as consequence of the ineffective action of its main detoxification pathway, the glyoxalase system, of which glyoxalase 1 (Glo1) is the rate-limiting enzyme. Indeed, a physiological decrease of Glo1 transcription and activity occurs not only in chronic hyperglycaemia but also with ageing, during which MGO accumulation occurs...
January 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106734/glycative-stress-and-its-defense-machinery-glyoxalase-1-in-renal-pathogenesis
#4
REVIEW
Yosuke Hirakawa, Reiko Inagi
Chronic kidney disease is a major public health problem around the world. Because the kidney plays a role in reducing glycative stress, renal dysfunction results in increased glycative stress. In turn, glycative stress, especially that due to advanced glycated end products (AGEs) and their precursors such as reactive carbonyl compounds, exacerbates chronic kidney disease and is related to premature aging in chronic kidney disease, whether caused by diabetes mellitus or otherwise. Factors which hinder a sufficient reduction in glycative stress include the inhibition of anti-glycation enzymes (e...
January 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28106664/ethnic-differences-regarding-arterial-stiffness-of-6-8-year-old-black-and-white-boys
#5
Gontse G Mokwatsi, Aletta E Schutte, Ruan Kruger
OBJECTIVES: Vascular deterioration is suggested to occur earlier in black than white populations, thereby increasing their risk for developing hypertension. To establish whether this is the case, we compared different estimates of arterial stiffness in black and white children and investigated the links with body composition and advanced glycation end products (AGEs) as potential contributors. METHODS: We included 40 black and 41 white boys (aged 6-8 years) from similar schools and measured arterial stiffness [pulse wave velocity (PWV) in different arterial sections, systemic arterial compliance and carotid stiffness estimates], anthropometry as well as urinary pentosidine as a marker of AGEs...
January 18, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28105084/picroside-ii-protects-myocardium-from-ischemia-reperfusion-induced-injury-through-inhibition-of-the-inflammatory-response
#6
Jian-Zhe Li, Mei-Qing Xie, Dan Mo, Xiao-Fang Zhao, Shu-Yi Yu, Li-Juan Liu, Cheng Wu, Yang Yang
The inflammatory response is important in the pathogenesis of myocardial ischemia/reperfusion (I/R) injury. Picroside II, the primary active constituent of Picrorhizae, has been reported to protect the myocardium from I/R-induced injury, however, the exact mechanism underlying these protective effects remains unclear. The aim of the present study was to investigate the mechanism underlying the protective effects of picroside II on I/R-induced myocardial injury. Adult male Sprague-Dawley rats underwent 1 h left coronary artery occlusion followed by 3 h reperfusion...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28101123/regulatory-landscape-of-age-rage-oxidative-stress-axis-and-its-modulation-by-ppar%C3%AE-activation-in-high-fructose-diet-induced-metabolic-syndrome
#7
Luca Cannizzaro, Giuseppe Rossoni, Federica Savi, Alessandra Altomare, Cristina Marinello, Thammakorn Saethang, Marina Carini, D Michael Payne, Trairak Pisitkun, Giancarlo Aldini, Asada Leelahavanichkul
BACKGROUND: The AGE-RAGE-oxidative stress (AROS) axis is involved in the onset and progression of metabolic syndrome induced by a high-fructose diet (HFD). PPARγ activation is known to modulate metabolic syndrome; however a systems-level investigation looking at the protective effects of PPARγ activation as related to the AROS axis has not been performed. The aim of this work is to simultaneously characterize multiple molecular parameters within the AROS axis, using samples taken from different body fluids and tissues of a rat model of HFD-induced metabolic syndrome, in the presence or absence of a PPARγ agonist, Rosiglitazone (RGZ)...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/28099448/the-effects-of-low-power-laser-irradiation-on-inflammation-and-apoptosis-in-submandibular-glands-of-diabetes-induced-rats
#8
Cíntia Yuki Fukuoka, Alyne Simões, Toshikazu Uchiyama, Victor Elias Arana-Chavez, Yoshimitsu Abiko, Noboru Kuboyama, Ujjal K Bhawal
Diabetes can lead to dysfunction of the secretory capacity in salivary glands. Activation of the receptor for advanced glycation end products (RAGE) and its ligands has been suggested to participate in chronic disorders such as diabetes and its complications. In this study, the expression of RAGE, high mobility group box 1 (HMGB1) and advanced glycation end products (AGE), as well as the effects of low-power laser irradiation (LPLI) in salivary glands of diabetic rats were evaluated, and the mechanisms involved were characterized...
2017: PloS One
https://www.readbyqxmd.com/read/28098371/assessing-the-effects-of-advanced-glycation-end-products-in-the-skin
#9
S S Maria-Engler
No abstract text is available yet for this article.
January 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28097824/mechanisms-of-metabolic-memory-and-renal-hypoxia-as-a-therapeutic-target-in-diabetic-kidney-disease
#10
REVIEW
Yosuke Hirakawa, Tetsuhiro Tanaka, Masaomi Nangaku
Diabetic kidney disease (DKD) is a worldwide public health problem. The definition of DKD is being under discussion. Although the term DKD was originally defined as "kidney disease specific to diabetes", DKD frequently means chronic kidney disease (CKD) with diabetes mellitus and includes not only classical diabetic nephropathy, but also kidney dysfunction due to nephrosclerosis and other causes. Metabolic memory plays a crucial role in the progression of various complications of diabetes, including DKD. The mechanisms of metabolic memory in DKD are supposed to include advanced glycation end products, DNA methylation, histone modifications, and non-coding RNA including microRNA...
January 17, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28096127/formation-of-fructose-mediated-advanced-glycation-end-products-and-their-roles-in-metabolic-and-inflammatory-diseases
#11
REVIEW
Alejandro Gugliucci
Fructose is associated with the biochemical alterations that promote the development of metabolic syndrome (MetS), nonalcoholic fatty liver disease, and type 2 diabetes. Its consumption has increased in parallel with MetS. It is metabolized by the liver, where it stimulates de novo lipogenesis. The triglycerides synthesized lead to hepatic insulin resistance and dyslipidemia. Fructose-derived advanced glycation end products (AGEs) may be involved via the Maillard reaction. Fructose has not been a main focus of glycation research because of the difficulty in measuring its adducts, and, more importantly, because although it is 10 times more reactive than glucose, its plasma concentration is only 1% of that of glucose...
January 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28093090/potential-involvement-of-dietary-advanced-glycation-end-products-in-impairment-of-skeletal-muscle-growth-and-muscle-contractile-function-in-mice
#12
Tatsuro Egawa, Satoshi Tsuda, Ayumi Goto, Yoshitaka Ohno, Shingo Yokoyama, Katsumasa Goto, Tatsuya Hayashi
Diets enriched with advanced glycation end products (AGE) have recently been related to muscle dysfunction processes. However, it remains unclear whether long-term exposure to an AGE-enriched diet impacts physiological characteristics of skeletal muscles. Therefore, we explored the differences in skeletal muscle mass, contractile function and molecular responses between mice receiving a diet high in AGE (H-AGE) and low in AGE (L-AGE) for 16 weeks. There were no significant differences between L-AGE and H-AGE mice with regard to body weight, food intake or epididymal fat pad weight...
January 17, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28092162/clinical-use-of-high-mobility-group-box-1-and-the-receptor-for-advanced-glycation-end-products-in-the-prognosis-and-risk-stratification-of-heart-failure-a-literature-review
#13
Amanda M Marsh, Austin Huy Nguyen, Taylor M Parker, Devendra K Agrawal
Heart failure (HF) is a clinical syndrome that represents the end stage of heart disease and remains the leading cause of morbidity and mortality worldwide. As heart failure mortality rates remain elevated, additional biomarkers that facilitate early detection or risk stratification in HF is of particularly great interest. High mobility group box 1 (HMGB1) and receptor for advanced glycation end products (RAGE) cause the activation of intracellular signaling, gene expression, and production of inflammatory cytokines and have been linked to many inflammatory disease states such as diabetes mellitus and atherosclerosis...
November 30, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28091942/all-trans-retinoic-acid-supplementation-prevents-cardiac-fibrosis-and-cytokines-induced-by-methylglyoxal
#14
Umadevi Subramanian, Devipriya Nagarajan
Methylglyoxal (MG), a metabolic intermediate of glycolysis is a precursor for endogeneous production of advanced glycation end-products. The increased production of MG have negative influence over the structure and function of different biomolecules and thus plays an important role in the pathogenesis of diabetic cardiac complications. Retinoic acid (RA), an active metabolite of vitamin A, has a major role in preventing cardiac remodeling and ventricular fibrosis. Hence, the objective of the present study was to determine whether rats administered with all-trans retinoic acid (RA) could attenuate MG induced pathological effects...
January 14, 2017: Glycoconjugate Journal
https://www.readbyqxmd.com/read/28078446/detection-of-rage-expression-and-its-application-to-diabetic-wound-age-estimation
#15
Xin-Yi Ji, Yang Chen, Guang-Hua Ye, Miao-Wu Dong, Ke-Zhi Lin, Jun-Ge Han, Xiang-Ping Feng, Xing-Biao Li, Lin-Sheng Yu, Yan-Yan Fan
With the prevalence of diabetes, it is becoming important to analyze the diabetic wound age in forensic practice. The present study investigated the time-dependent expression of receptor for advanced glycation end products (RAGE) during diabetic wound healing in mice and its applicability to wound age determination by immunohistochemistry, double immunofluorescence, and Western blotting. After an incision was created in genetically diabetic db/db mice and control mice, mice were killed at posttraumatic intervals ranging from 6 h to 14 days, followed by the sampling of wound margin...
January 11, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28078186/soluble-receptor-for-advanced-glycation-end-products-improves-stromal-cell-derived-factor-1-activity-in-model-diabetic-environments
#16
Melissa Przyborowski Olekson, Renea A Faulknor, Henry C Hsia, Ann Marie Schmidt, François Berthiaume
Objective: In diabetes, hyperglycemia causes the accumulation of advanced glycation end products (AGEs) that trigger reactive oxygen species (ROS) generation through binding the receptor for AGEs (RAGE). Because exogenous growth factors have had little success in enhancing chronic wound healing, we investigated whether hyperglycemia-induced AGEs interfere with cellular responses to extracellular signals. We used stromal cell-derived factor-1 (SDF-1), an angiogenic chemokine also known to promote stem cell recruitment in skin wounds...
December 1, 2016: Advances in Wound Care
https://www.readbyqxmd.com/read/28073699/activation-of-nrf2-attenuates-carbonyl-stress-induced-by-methylglyoxal-in-human-neuroblastoma-cells-increase-in-gsh-levels-is-a-critical-event-for-the-detoxification-mechanism
#17
Shoichi Nishimoto, Shin Koike, Naho Inoue, Toshihiro Suzuki, Yuki Ogasawara
The present study focused on the methylglyoxal (MG) detoxification mechanism in neuroblastoma cells. The involvement of nuclear factor erythroid 2-related factor 2 (Nrf2)/Kelch-like ECH-associated protein 1 (Keap1) pathway as a defense response against the formation of MG-modified proteins, which is well-known evidence of carbonyl stress, was also examined. We found that MG treatment resulted in accumulation of modified proteins bearing the structure of advanced glycation end products (AGEs) derived from MG in SH-SY5Y cells...
January 7, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28071754/far-infrared-protects-vascular-endothelial-cells-from-advanced-glycation-end-products-induced-injury-via-plzf-mediated-autophagy-in-diabetic-mice
#18
Cheng-Hsien Chen, Tso-Hsiao Chen, Mei-Yi Wu, Tz-Chong Chou, Jia-Rung Chen, Meng-Jun Wei, San-Liang Lee, Li-Yu Hong, Cai-Mei Zheng, I-Jen Chiu, Yuh-Feng Lin, Ching-Min Hsu, Yung-Ho Hsu
The accumulation of advanced glycation end products (AGEs) in diabetic patients induces vascular endothelial injury. Promyelocytic leukemia zinc finger protein (PLZF) is a transcription factor that can be activated by low-temperature far-infrared (FIR) irradiation to exert beneficial effects on the vascular endothelium. In the present study, we investigated the influence of FIR-induced PLZF activation on AGE-induced endothelial injury both in vitro and in vivo. FIR irradiation inhibited AGE-induced apoptosis in human umbilical vein endothelial cells (HUVECs)...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28067098/glycated-albumin-modifies-platelet-adhesion-and-aggregation-responses
#19
Ioana Soaita, Wei Yin, David A Rubenstein
A diabetic vasculature is detrimental to cardiovascular health through the actions of advanced glycation end products (AGEs) on endothelial cells and platelets. Platelets activated by AGEs agonize endothelial responses promoting cardiovascular disease (CVD) development. While it has been established that AGEs can alter platelet functions, little is known about the specific platelet pathways that AGEs modify. Therefore, we evaluated the effects of AGEs on specific salient platelet pathways related to CVDs and whether the effects that AGEs elicit are dependent on glycation extent...
January 9, 2017: Platelets
https://www.readbyqxmd.com/read/28065730/potential-of-cecl3-msio2-nanoparticles-in-alleviating-diabetic-cataract-development-and-progression
#20
Jin Yang, Xiaoqun Gong, Lei Fang, Qi Fan, Lei Cai, Xiaodi Qiu, Bo Zhang, Jin Chang, Yi Lu
Cataract is a major cause of visual impairment for diabetic patients. It is imperative to develop efficient therapeutic agents against diabetic cataract (DC) because diabetes confers higher risk for complications after cataract surgery. We have previously reported the role of CeCl3 loaded mesoporous silica (CeCl3@mSiO2) nanoparticles in reducing the oxidative stress of lens epithelial cells. However, the potential of CeCl3@mSiO2 in preventing diabetic cataract development remains unclear. In this study, we applied CeCl3@mSiO2 nanoparticles with a size of 87...
January 5, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
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