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Advanced glycation end products

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https://www.readbyqxmd.com/read/27918216/s100p-is-overexpressed-in-squamous-cell-and-adenosquamous-carcinoma-subtypes-of-endometrial-cancer-and-promotes-cancer-cell-proliferation-and-invasion
#1
Hongfei Jiang, Hang Hu, Fan Lin, Yoon Pin Lim, Yunfen Hua, Xiaomei Tong, Songying Zhang
S100P is known to affect tumor development and metastasis of various cancers, but its role in endometrial cancer is unclear. We reported that S100P expression was dramatically elevated in both endometrial squamous cell carcinoma and adenosquamous carcinoma, but not in adenocarcinoma and normal endometrial samples. Moreover, we revealed an oncogenic role of S100P promoting cell proliferation, invasion, and migration while reducing apoptosis, possibly via its upregulation and/or activation of receptors of advanced glycation end products and consequently the oncogenic PI3K-AKT and MAPK pathways...
November 25, 2016: Cancer Investigation
https://www.readbyqxmd.com/read/27917671/-the-role-of-oxidative-stress-in-the-development-of-diabetic-neuropathy
#2
Ferenc Sztanek, Ágnes Molnárné Molnár, Zoltán Balogh
Diabetic neuropathy may be one of the most common and severe complications of diabetes mellitus. Oxidative stress plays a pivotal role in the development of microvascular complications of diabetes. The majority of related pathways like polyol and hexosamine, advanced glycation end products, poly-ADP-ribose polymerase, and protein kinase-C all originated from initial oxidative stress. In this review, the authors present the current oxidative stress hypothesis in diabetes mellitus and summarize the pathophysiological mechanisms of diabetic neuropathy associated with increased oxidative stress...
December 2016: Orvosi Hetilap
https://www.readbyqxmd.com/read/27916650/cardiac-oxidative-stress-in-diabetes-mechanisms-and-therapeutic-potential
#3
REVIEW
Alyssa Faria, Shanta J Persaud
Macrovascular complications of diabetes, including diabetic cardiovascular disease (CVD), occur through a number of hyperglycaemia-induced mechanisms that include generation of oxidative stress, accumulation of advanced glycation end-products (AGE) and activation of protein kinase C (PKC). Cardiac oxidative stress is associated with increased cardiac fibrosis and hypertrophy, and reduced cardiac performance and contractility, leading to severe cardiac dysfunction and potentially fatal cardiac events. It occurs under conditions of excessive synthesis of reactive oxygen species (ROS)...
December 1, 2016: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27914528/food-advanced-glycation-end-products-aggravate-the-diabetic-vascular-complications-via-modulating-the-ages-rage-pathway
#4
Xing Lv, Gao-Hong Lv, Guo-Ying Dai, Hong-Mei Sun, Hui-Qin Xu
The aim of this study was to investigate the effects of high-advanced glycation end products (AGEs) diet on diabetic vascular complications. The Streptozocin (STZ)-induced diabetic mice were fed with high-AGEs diet. Diabetic characteristics, indicators of renal and cardiovascular functions, and pathohistology of pancreas, heart and renal were evaluated. AGEs/RAGE/ROS pathway parameters were determined. During the experiments, the diabetic mice exhibited typical characteristics including weight loss, polydipsia, polyphagia, polyuria, high-blood glucose, and low-serum insulin levels...
November 2016: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/27914132/associations-between-soluble-receptor-for-advanced-glycation-end-products-srage-and-s100a12-en-rage-with-mortality-in-long-term-hemodialysis-patients
#5
Eul Sik Jung, Wookyung Chung, Ae Jin Kim, Han Ro, Jae Hyun Chang, Hyun Hee Lee, Ji Yong Jung
Hemodialysis (HD) patients experience vascular calcification, ultimately leading to high mortality rates. Previously, we reported associations between soluble receptor for advanced glycation end products (sRAGEs) and extracellular newly identified RAGE-binding protein S100A12 (EN-RAGE) and vascular calcification. Here, we extended our observations, investigating whether these biomarkers may be useful for predicting cardiovascular morbidity and mortality in these subjects. Thus, we evaluated the relationship between sRAGE and S100A12 and mortality in long-term HD patients...
January 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/27913191/the-shedding-derived-soluble-receptor-for-advanced-glycation-endproducts-sustains-inflammation-during-acute-pseudomonas-aeruginosa-lung-infection
#6
Antonella Antonelli, Stefania Di Maggio, Joanna Rejman, Francesca Sanvito, Alice Rossi, Alessandro Catucci, Andrea Gorzanelli, Alessandra Bragonzi, Marco E Bianchi, Angela Raucci
BACKGROUND: The membrane-bound isoform of the receptor for advanced glycation end products (FL-RAGE) is primarily expressed by alveolar epithelial cells and undergoes shedding by the protease ADAM10, giving rise to soluble cleaved RAGE (cRAGE). RAGE has been associated with the pathogenesis of several acute and chronic lung disorders. Whether the proteolysis of FL-RAGE is altered by a given inflammatory stimulus is unknown. Pseudomonas aeruginosa causes nosocomial infections in hospitalized patients and is the major pathogen associated with chronic lung diseases...
November 29, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27909725/lipoprotein-redox-status-evaluation-as-a-marker-of-cardiovascular-disease-risk-in-patients-with-inflammatory-disease
#7
Anca Ungurianu, Denisa Margină, Daniela Grădinaru, Claudia Băcanu, Mihaela Ilie, Christina Tsitsimpikou, Konstantinos Tsarouhas, Demetrios A Spandidos, Aristides M Tsatsakis
Patients with chronic inflammatory disorders (ID) have an increased risk of developing cardiovascular disease, and routinely determined parameters do not reveal the real metabolic status of specific subgroups, such as patients with rheumatoid arthritis (RA). In this study, in order to evaluate state of the art markers for the assessment of cardiometabolic risk, abnormalities in lipoprotein levels in patients with a low‑grade inflammatory status [diabetes mellitus (DM) subgroup] and in patients with a high systemic inflammatory burden (RA subgroup) was determined...
November 28, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27907047/rage-deficiency-impairs-bacterial-clearance-in-murine-staphylococcal-sepsis-but-has-no-significant-impact-on-staphylococcal-septic-arthritis
#8
Majd Mohammad, Manli Na, Amanda Welin, Mattias N D Svensson, Abukar Ali, Tao Jin, Rille Pullerits
BACKGROUND: Septic arthritis is a serious joint disease often caused by Staphylococcus aureus (S. aureus). Receptor for Advanced Glycation End products (RAGE) has an important role in several infections. We sought to investigate the role of RAGE in staphylococcal septic arthritis and sepsis in mice. METHODS: Wild-type (WT) and RAGE deficient (RAGE-/-) mice were intra-articularly or intravenously inoculated with an arthritic or septic dose of S. aureus LS-1 strain...
2016: PloS One
https://www.readbyqxmd.com/read/27906877/association-between-small-fiber-neuropathy-and-higher-skin-accumulation-of-advanced-glycation-end-products-in-patients-with-type-1-diabetes
#9
Aleksandra Araszkiewicz, Agnieszka Gandecka, Michał Nowicki, Aleksandra Uruska, Agnieszka Malińska, Katarzyna Kowalska, Bogna Wierusz-Wysocka, Dorota Zozulińska-Ziółkiewicz
INTRODUCTION Advanced glycation end products (AGEs) play a crucial role in the pathogenesis of diabetic peripheral neuropathy (DPN). OBJECTIVES The aim of the study was to assess the skin accumulation of AGEs in patients with long‑lasting type 1 diabetes in relation to the presence of DPN. PATIENTS AND METHODS We evaluated 178 patients with type 1 diabetes (99 men; age, 43 years [interquartile range [IQR], 34-54 years]; disease duration, 25 years [IQR, 18-31 years]). DPN was diagnosed if 2 or more of the following 5 abnormalities were present: symptoms of neuropathy, lack of ankle reflexes, and impaired sensation of touch, temperature, and/or vibration...
November 22, 2016: Polskie Archiwum Medycyny Wewnętrznej
https://www.readbyqxmd.com/read/27902958/fructosylation-induced-structural-changes-in-mammalian-dna-examined-by-biophysical-techniques
#10
Asif Zaman, Zarina Arif, Khursheed Alam
Glycosylation of DNA, proteins, lipids, etc. by reducing sugars, can lead to the formation of advanced glycation end products (AGEs). These products may accumulate and involve in the pathogenesis of a number of diseases, contributing to tissue injury via several mechanisms. In this study, fructosylation of calf thymus dsDNA was carried out with varying concentrations of fructose. The neo-structure of fructosylated-DNA was studied by various biophysical techniques and morphological characterization. Fructosylated-DNA showed hyperchromicity, increase in fluorescence intensity and decrease in melting temperature...
November 20, 2016: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/27898405/n-acetyl-cysteine-attenuated-the-deleterious-effects-of-advanced-glycation-end-products-on-the-kidney-of-non-diabetic-rats
#11
Karina Thieme, Karolline S Da Silva, Nelly T Fabre, Sergio Catanozi, Maria Beatriz Monteiro, Daniele Pereira Santos-Bezerra, Juliana Martins Costa-Pessoa, Maria Oliveira-Souza, Ubiratan F Machado, Marisa Passarelli, Maria Lucia Correa-Giannella
AIM: To assess the renal effects of chronic exposure to advanced glycation end-products (AGEs) in the absence of diabetes and the potential impact of concomitant treatment with the antioxidant N-acetyl cysteine (NAC). METHODS: Wistar rats received intraperitoneally 20 mg/kg/day of albumin modified (AlbAGE) or not (AlbC) by advanced glycation for 12 weeks and oral NAC (600mg/L; AlbAGE+NAC and AlbC+NAC, respectively). Biochemical, urinary and renal morphological analyses; carboxymethyl-lysine (CML, an AGE), CD68 (macrophage infiltration), and 4-hydroxynonenal (4-HNE, marker of oxidative stress) immunostaining; intrarenal mRNA expression of genes belonging to pathways related to AGEs (Ager, Ddost, Nfkb1), renin-angiotensin system (Agt, Ren, Ace), fibrosis (Tgfb1, Col4a1), oxidative stress (Nox4, Txnip), and apoptosis (Bax, Bcl2); and reactive oxidative species (ROS) content were performed...
November 30, 2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27895004/predictors-of-vascular-cognitive-impairment-poststroke-in-a-middle-eastern-bahrain-cohort-a-proposed-case-control-comparison
#12
Claire Donnellan, Mona Al Banna, Noor Redha, Adel Al Jishi, Isa Al Sharoqi, Safa Taha, Moiz Bakhiet, Fatema Abdulla, Patrick Walsh
BACKGROUND: Poststroke dementia and cognitive impairment are associated with poor long-term outcomes after stroke. The contribution of genetic factors such as the presence of apolipoprotein (ApoE) ɛ4 allele and its association with cognitive impairment poststroke remains inconclusive, particularly in Middle Eastern regions. OBJECTIVE: The aim of this study is to examine all correlates and potential predictors of cognitive impairment including self-awareness and regulation deficits in stroke patients and compare these functions with healthy older adults from a Middle Eastern population...
November 28, 2016: JMIR Research Protocols
https://www.readbyqxmd.com/read/27894247/aldose-reductase-as-a-drug-target-for-treatment-of-diabetic-nephropathy-promises-and-challenges
#13
Heba El Gamal, Shankar Munusamy
Diabetic nephropathy (DN) is one of the most serious microvascular complications of diabetes mellitus and the leading cause of end stage renal disease. One of the key pathways activated in DN is the polyol pathway, in which glucose is converted to sorbitol (a relatively non-metabolizable sugar) by the enzyme aldose reductase (AR). Shunting of glucose into this pathway causes disruption to glucose metabolism and subsequently damages the tissues via increased oxidative stress, protein kinase c activation and production of advanced glycation end products (AGE) in the kidney...
November 28, 2016: Protein and Peptide Letters
https://www.readbyqxmd.com/read/27890722/diabetes-induced-hepatic-oxidative-stress-a-new-pathogenic-role-for-glycated-albumin
#14
Jessica Patche, Dorothée Girard, Aurélie Catan, Florence Boyer, Anthony Dobi, Cynthia Planesse, Nicolas Diotel, Alexis Guerin-Dubourg, Pascal Baret, Susana B Bravo, Beatriz Paradela-Dobarro, Ezequiel Álvarez, M Faadiel Essop, Olivier Meilhac, Emmanuel Bourdon, Philippe Rondeau
Increased oxidative stress and advanced glycation end-product (AGE) formation are major contributors to the development of type 2 diabetes. Here plasma proteins e.g. albumin can undergo glycoxidation and play a key role in diabetes onset and related pathologies. However, despite recent progress linking albumin-AGE to increased oxidative stress and downstream effects, its action in metabolic organs such as the liver remains to be elucidated. The current study therefore investigated links between oxidative perturbations and biochemical/structural modifications of plasma albumin, and subsequent downstream effects in transgenic db/db mouse livers and HepG2 cells, respectively...
November 24, 2016: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/27886093/hmgb1-promotes-intraoral-palatal-wound-healing-through-rage-dependent-mechanisms
#15
Salunya Tancharoen, Satoshi Gando, Shrestha Binita, Tomoka Nagasato, Kiyoshi Kikuchi, Yuko Nawa, Pornpen Dararat, Mika Yamamoto, Somphong Narkpinit, Ikuro Maruyama
High mobility group box 1 (HMGB1) is tightly connected to the process of tissue organization upon tissue injury. Here we show that HMGB1 controls epithelium and connective tissue regeneration both in vivo and in vitro during palatal wound healing. Heterozygous HMGB1 (Hmgb1(+/-)) mice and Wild-type (WT) mice were subjected to palatal injury. Maxillary tissues were stained with Mallory Azan or immunostained with anti-HMGB1, anti-proliferating cell nuclear antigen (PCNA), anti-nuclear factor-κB (NF-κB) p50 and anti-vascular endothelial growth factor (VEGF) antibodies...
November 23, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27883367/a-drop-in-the-circulating-concentrations-of-soluble-receptor-for-ages-is-associated-with-seroconversion-to-autoantibody-positivity-but-not-with-subsequent-progression-to-clinical-disease-in-children-en-route-to-type-1-diabetes
#16
K M Salonen, S J Ryhänen, J M Forbes, T Härkönen, J Ilonen, O Simell, R Veijola, P-H Groop, M Knip
BACKGROUND: Advanced glycation end products (AGEs) and their interaction with the receptor for advanced glycation end products (RAGE) have been studied for their role in the pathogenesis and complications of type 1 diabetes. Decreased concentrations of soluble RAGE (sRAGE) have been reported in acute autoimmune inflammation. We set out to analyze the changes in (sRAGE) concentration during preclinical diabetes in children seroconverting to islet autoantibody positivity. METHODS: We measured serum concentrations of sRAGE in 168 children who progressed to clinical disease and 43 children who turned positive for at least two diabetes-associated autoantibodies but remained non-diabetic...
November 24, 2016: Diabetes/metabolism Research and Reviews
https://www.readbyqxmd.com/read/27879642/curcumin-and-boswellia-serrata-modulate-the-glyco-oxidative-status-and-lipo-oxidation-in-master-athletes
#17
Nino Cristiano Chilelli, Eugenio Ragazzi, Romina Valentini, Chiara Cosma, Stefania Ferraresso, Annunziata Lapolla, Giovanni Sartore
BACKGROUND: Chronic intensive exercise is associated with a greater induction of oxidative stress and with an excess of endogenous advanced glycation end-products (AGEs). Curcumin can reduce the accumulation of AGEs in vitro and in animal models. We examined whether supplementation with curcumin and Boswellia serrata (BSE) gum resin for 3 months could affect plasma levels of markers of oxidative stress, inflammation, and glycation in healthy master cyclists. METHODS: Forty-seven healthy male athletes were randomly assigned to Group 1, consisting of 22 subjects given a Mediterranean diet (MD) alone (MD group), and Group 2 consisted of 25 subjects given a MD plus curcumin and BSE (curcumin/BSE group)...
November 21, 2016: Nutrients
https://www.readbyqxmd.com/read/27879401/diabetic-cardiomyopathy-the-case-for-a-role-of-fructose-in-disease-etiology
#18
Lea M D Delbridge, Vicky L Benson, Rebecca H Ritchie, Kimberley M Mellor
A link between excess dietary sugar and cardiac disease is clearly evident and has been largely attributed to systemic metabolic dysregulation. Now a new paradigm is emerging, and a compelling case can be made that fructose-associated heart injury may be attributed to the direct actions of fructose on cardiomyocytes. Plasma and cardiac fructose levels are elevated in patients with diabetes, and evidence suggests that some unique properties of fructose (vs. glucose) have specific cardiomyocyte consequences. Investigations to date have demonstrated that cardiomyocytes have the capacity to transport and utilize fructose and express all of the necessary proteins for fructose metabolism...
December 2016: Diabetes
https://www.readbyqxmd.com/read/27877108/cerebral-ketone-body-oxidation-is-facilitated-by-a-high-fat-diet-enriched-with-advanced-glycation-end-products-in-normal-and-diabetic-rats
#19
Adriano M de Assis, Jussemara S da Silva, Anderson Rech, Aline Longoni, Yasmine Nonose, Cendrine Repond, Matheus A de Bittencourt Pasquali, José C F Moreira, Diogo O Souza, Luc Pellerin
Diabetes mellitus (DM) causes important modifications in the availability and use of different energy substrates in various organs and tissues. Similarly, dietary manipulations such as high fat diets also affect systemic energy metabolism. However, how the brain adapts to these situations remains unclear. To investigate these issues, control and alloxan-induced type I diabetic rats were fed either a standard or a high fat diet enriched with advanced glycation end products (AGEs) (HAGE diet). The HAGE diet increased their levels of blood ketone bodies, and this effect was exacerbated by DM induction...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27876336/inhibition-of-protein-glycation-antioxidant-and-antiproliferative-activities-of-carpobrotus-edulis-extracts
#20
Jawhar Hafsa, Khaoula Mkadmini Hammi, Med Raâfet Ben Khedher, Med Ali Smach, Bassem Charfeddine, Khalifa Limem, Hatem Majdoub
Carpobrotus edulis is an important South African medicinal plants used as a food and therapeutic agent in traditional medicine. The aim of this study was to determine the phytochemical content, antioxidant, antiglycation and cytotoxic effect against Human Colon Cancer Cell Line (HCT-116) of aqueous and ethanol-water (1:1v/v) extracts of Carpobrotus edulis.The content of total phenolics and flavonoids in aqueous and ethanol-water extract were 151.99μg and 66.35μg gallic acid equivalents/mg of dry extract, and 38...
November 19, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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