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Z Merhi, E Buyuk, M J Cipolla
STUDY QUESTION: Does vitamin D attenuate the adverse effects of advanced glycation end products (AGEs) on steroidogenesis by human granulosa cells (GCs)? SUMMARY ANSWER: AGEs alter the expression of genes important in steroidogenesis while 1,25-dihydroxyvitamin D3 (vit D3) in vitro attenuates some of the actions of AGEs on steroidogenic gene expression, possibly by downregulating the expression of the pro-inflammatory cell membrane receptor for AGEs (RAGE). WHAT IS KNOWN ALREADY: Vitamin D attenuates the pro-inflammatory effects of AGEs in non-ovarian tissues...
March 12, 2018: Molecular Human Reproduction
John Rene Labib, Sally Kamal Ibrahem, Hala Mohamed Sleem, Mohamed M Ismail, Shaimaa A M Abd El Fatah, Marwa Rashad Salem, Amaal A Abdelaal, Hadeel Al-Hanafi
Early identification of acute lung injury (ALI) in pediatric patients at risk of mortality is important for improving outcome.Assessment of soluble form of receptor for advanced glycation end products (sRAGE) as a valid biomarker for diagnosis of ALI among critically ill, pediatric patients in addition to correlating levels of sRAGE and different outcomes of those patients.A Hospital-based case-control study was conducted in pediatric intensive care units (PICUs) at Cairo University Hospital, along a period of 6 months...
March 2018: Medicine (Baltimore)
F Zhou, Y Tan, X-H Chen, F-L Wu, D-J Yang, X-W Zhang, X-M Wu, Y-Q Deng
OBJECTIVE: To study the improving effect of atorvastatin on plaque stability in diabetes mellitus (DM) mice complicated with atherosclerosis. MATERIALS AND METHODS: Apolipoprotein E (ApoE)-/- mice were used to establish the DM mouse model. Half of the mice received atorvastatin after successful modeling. ApoE-/- and C57BL/6J mice were used as controls. Oil red O staining and Masson staining were performed to detect the lipid and collagen components in mice. Immunohistochemical assay was used to observe the expressions of smooth muscle cell (SMC) and Ly-6c...
February 2018: European Review for Medical and Pharmacological Sciences
Felix C F Schmitt, Eduardo Salgado, Janina Friebe, Thomas Schmoch, Florian Uhle, Thomas Fleming, Johanna Zemva, Lars Kihm, Christian Nusshag, Christian Morath, Martin Zeier, Thomas Bruckner, Arianeb Mehrabi, Peter P Nawroth, Markus A Weigand, Stefan Hofer, Thorsten Brenner
BACKGROUND: A prolonged cold ischemia time (CIT) is suspected to be associated with an increased ischemia and reperfusion injury (IRI) resulting in an increased damage to the graft. METHODS: In total, 91 patients were evaluated for a delayed graft function within 7 days after kidney transplantation (48 deceased, 43 living donors). Blood and urine samples were collected before, immediately after the operation, and 1, 3, 5, 7 and 10 days later. Plasma and/or urine levels of total keratin 18 (total K18), caspase-cleaved keratin 18 (cc K18), the soluble receptor for advanced glycation end-products (sRAGE), tissue inhibitor of metalloproteinase-2 and insulin-like growth factor-binding protein-7 ([TIMP-2]×[IGFBP7]) were measured...
March 5, 2018: Transplant International: Official Journal of the European Society for Organ Transplantation
Frank Klont, Simon D Pouwels, Jos Hermans, Nico C van de Merbel, Péter Horvatovich, Nick H T Ten Hacken, Rainer Bischoff
The study of proteins is central to unraveling (patho)physiological processes and has contributed greatly to our understanding of biological systems. Corresponding studies often employ procedures to enrich proteins from their biological matrix using antibodies or other affinity binders coupled to beads with a large surface area and a correspondingly high binding capacity. Striving for maximal binding capacity may, however, not always be required or desirable, for example for proteins of low abundance. Here we describe a simplified immunoprecipitation in 96-well ELISA format (IPE) approach for fast and easy enrichment of proteins...
May 15, 2018: Talanta
Kailash Prasad, Manish Mishra
Adverse effects of advanced glycation end-products (AGEs) on the tissues are through nonreceptor- and receptor-mediated mechanisms. In the receptor-mediated mechanism, interaction of AGEs with its cell-bound receptor of AGE (RAGE) increases generation of oxygen radicals, activates nuclear factor-kappa B, and increases expression and release of pro-inflammatory cytokines resulting in the cellular damage. The deleterious effects of AGE and AGE-RAGE interaction are coined as "AGE-RAGE stress." The body is equipped with defense mechanisms to counteract the adverse effects of AGE and RAGE through endogenous enzymatic (glyoxalase 1, glyoxalase 2) and AGE receptor-mediated (AGER1, AGER2) degradation of AGE, and through elevation of soluble receptor of AGE (sRAGE)...
March 2018: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
Matthieu Jabaudon, Pauline Berthelin, Thibaut Pranal, Laurence Roszyk, Thomas Godet, Jean-Sébastien Faure, Russell Chabanne, Nathanael Eisenmann, Alexandre Lautrette, Corinne Belville, Raiko Blondonnet, Sophie Cayot, Thierry Gillart, Julien Pascal, Yvan Skrzypczak, Bertrand Souweine, Loic Blanchon, Vincent Sapin, Bruno Pereira, Jean-Michel Constantin
Acute respiratory distress syndrome (ARDS) prediction remains challenging despite available clinical scores. To assess soluble receptor for advanced glycation end-products (sRAGE), a marker of lung epithelial injury, as a predictor of ARDS in a high-risk population, adult patients with at least one ARDS risk factor upon admission to participating intensive care units (ICUs) were enrolled in a multicentre, prospective study between June 2014 and January 2015. Plasma sRAGE and endogenous secretory RAGE (esRAGE) were measured at baseline (ICU admission) and 24 hours later (day one)...
February 8, 2018: Scientific Reports
Shiva Houjeghani, Sorayya Kheirouri, Esmaeil Faraji, Mohammad Asghari Jafarabadi
Considering the pathologic importance of metabolic disturbances, advanced glycation end products (AGEs), and chronic inflammation in diabetes mellitus and ameliorating potentials of l-carnosine in hampering these detritions and because these effects have not been investigated in patients with type 2 diabetes (T2D) so far, we conducted the current study. We hypothesized that l-carnosine would improve glycemic control, lipid profile, AGE, soluble receptor of AGEs (sRAGE), and inflammatory markers. In a randomized, double-blind, placebo-controlled clinical trial, 54 patients with T2D were recruited and assigned into either intervention group (n=27, receiving 2 capsules of l-carnosine 500 mg each) or control group (n=27)...
January 2018: Nutrition Research
Susana A Palma-Duran, Meropi D Kontogianni, Antonis Vlassopoulos, Shudong Zhao, Aikaterini Margariti, Michael Georgoulis, George Papatheodoridis, Emilie Combet
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is a serious health problem affecting ~25% of the global population. While NAFLD pathogenesis is still unclear, multiple NAFLD parameters, including reduced insulin sensitivity, impaired glucose metabolism and increased oxidative stress are hypothesised to foster the formation of advance glycation end-products (AGEs). Given the link of AGEs with end organ damage, there is scope to examine the role of the AGE/RAGE axis activation in liver injury and NAFLD...
January 31, 2018: Metabolism: Clinical and Experimental
Lakshmi Srinivasan, Laurie Kilpatrick, Samir S Shah, Soraya Abbasi, Mary C Harris
BACKGROUND: Bacterial meningitis is challenging to diagnose in infants, especially in the common setting of antibiotic pre-treatment, which diminishes yield of cerebrospinal fluid (CSF) cultures. Prior studies of diagnostic markers have not demonstrated sufficient accuracy. Interleukin-23 (IL-23), interleukin-18 (IL-18) and soluble receptor for advanced glycation end products (sRAGE) possess biologic plausibility, and may be useful as diagnostic markers in bacterial meningitis. METHODS: In a prospective cohort study, we measured IL-23, IL-18 and sRAGE levels in CSF...
2018: PloS One
Michael Sponder, Ioana-Alexandra Campean, Michael Emich, Monika Fritzer-Szekeres, Brigitte Litschauer, Senta Graf, Daniel Dalos, Jeanette Strametz-Juranek
There is growing evidence that low levels of the circulating soluble receptor of advanced glycation end products (sRAGE) are a valuable predictor of cardiovascular disease (CVD). The aim of this prospective study was to investigate the influence of long-term physical activity on serum sRAGE levels. 109 subjects were recruited, and 98 completed the study. Participants were asked to perform exercise within the calculated training pulse for 8 months. The performance gain was measured/quantified by bicycle stress tests at the beginning and end of the observation period...
January 24, 2018: Heart and Vessels
Andisheh Abedini, Ping Cao, Annette Plesner, Jinghua Zhang, Meilun He, Julia Derk, Sachi A Patil, Rosa Rosario, Jacqueline Lonier, Fei Song, Hyunwook Koh, Huilin Li, Daniel P Raleigh, Ann Marie Schmidt
Islet amyloidosis is characterized by the aberrant accumulation of islet amyloid polypeptide (IAPP) in pancreatic islets, resulting in β cell toxicity, which exacerbates type 2 diabetes and islet transplant failure. It is not fully clear how IAPP induces cellular stress or how IAPP-induced toxicity can be prevented or treated. We recently defined the properties of toxic IAPP species. Here, we have identified a receptor-mediated mechanism of islet amyloidosis-induced proteotoxicity. In human diabetic pancreas and in cellular and mouse models of islet amyloidosis, increased expression of the receptor for advanced glycation endproducts (RAGE) correlated with human IAPP-induced (h-IAPP-induced) β cell and islet inflammation, toxicity, and apoptosis...
January 16, 2018: Journal of Clinical Investigation
Karim Traore, Mahamadou A Thera, Anne-Lise Bienvenu, Charles Arama, Guillaume Bonnot, Adeline Lavoignat, Ogobara K Doumbo, Stephane Picot
The role of some nutrient-derived metabolites on the innate and adaptive immune responses is now established. Global research approach investigating the interplay between environment, lifestyle and the host's immune responses is crucial in the understanding of malaria susceptibility. Advanced Glycation end products (AGE), which are food-derived metabolites result from the link between reducing sugar and amino group of proteins, lipids or nucleic acids. The level of exposure to AGEs varies depending on the type of diet...
2017: PloS One
Claire K Inman, Abdullah Aljunaibi, Hyunwook Koh, Abdishakur Abdulle, Raghib Ali, Abdullah Alnaeemi, Eiman Al Zaabi, Naima Oumeziane, Marina Al Bastaki, Mohammed Al-Houqani, Fatma Al-Maskari, Ayesha Al Dhaheri, Syed M Shah, Laila Abdel Wareth, Wael Al Mahmeed, Habiba Alsafar, Fatme Al Anouti, Ayesha Al Hosani, Muna Haji, Divya Galani, Matthew J O'Connor, Jiyoung Ahn, Tomas Kirchhoff, Scott Sherman, Richard B Hayes, Huilin Li, Ravichandran Ramasamy, Ann Marie Schmidt
Aims: The transformation of the United Arab Emirates (UAE) from a semi-nomadic to a high income society has been accompanied by increasing rates of obesity and Type 2 diabetes mellitus. We examined if the AGE-RAGE (receptor for advanced glycation endproducts) axis is associated with obesity and diabetes mellitus in the pilot phase of the UAE Healthy Futures Study (UAEHFS). Methods: 517 Emirati subjects were enrolled and plasma/serum levels of AGE, carboxy methyl lysine (CML)-AGE, soluble (s)RAGE and endogenous secretory (es)RAGE were measured along with weight, height, waist and hip circumference (WC/HC), blood pressure, HbA1c, Vitamin D levels and routine chemistries...
December 2017: Journal of Clinical & Translational Endocrinology
Zohara Sternberg, Channa Kolb, Kailash Chadha, Adam Nir, Raphael Nir, Rayan George, Joseph Johnson, Jinhee Yu, David Hojnacki
BACKGROUND: We investigated Fingolimod treatment effects on the RAGE (receptor for advanced glycation endproducts) axis in multiple sclerosis (MS) patients. The primary outcome of the study was whether Fingolimod treatment increases serum levels of the soluble RAGE isoforms, sRAGE and esRAGE - both being considered putative endogenous inhibitors of RAGE signaling. Additional variables were serum levels of RAGE ligands, the high mobility group box (HMGB)1 and pentosidine. METHODS: Serum levels of the study variables were measured by ELISA, and compared between baseline (before Fingolimod treatment) and 6 and 12 months post-drug treatment in 17 relapsing MS patients...
March 1, 2018: Neuropharmacology
Otto Mayer, Jitka Seidlerová, Václava Černá, Alena Kučerová, Petra Karnosová, Markéta Hronová, Peter Wohlfahrt, Radka Fuchsová, Jan Filipovský, Renata Cífková, Ondřej Topolčan, Martin Pešta
Low vitamin D status has been frequently associated with impaired glucose metabolism. We examined associations between 25-hydroxyvitamin D (25-OH-D) and several parameters of glucose homeostasis in virtually healthy subjects, and explored possible interaction with vitamin D receptor (VDR) polymorphism. Nondiabetic subjects without chronic medication or any known significant manifest disease were selected from large general-population based population survey. Insulin sensitivity and β cell secretion were calculated by homeostasis model assessment (HOMA) and soluble isoform of receptor for advanced glycation end-products (sRAGE) using commercial ELISA...
January 2018: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
Philippe Joly, John C Marshall, Philippe A Tessier, Chantal Massé, Nathalie Page, Anne Julie Frenette, François Khazoom, Soazig Le Guillan, Yves Berthiaume, Emmanuel Charbonney
BACKGROUND: Following tissue injury after trauma, the activation of innate immune pathways results in systemic inflammation, organ failure and an increased risk of infections. The objective of this study was to characterize the kinetics of the S100A8/S100A9 complex, a new-recognized alarmin, as well as its soluble receptor sRAGE, over time after trauma as potential early biomarkers of the risk of organ damage. METHODS: We collected comprehensive data from consenting patients admitted to an ICU following severe trauma...
November 25, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
Li-Chun Yeh, Ping-Wun Huang, Kuan-Hsian Hsieh, Chung-Hsuan Wang, Yi-Kai Kao, Tzu-Hsiang Lin, Xiao-Lun Lee
Acute lung injury (ALI) is one of the complications of severe sepsis, causing sudden deaths. However, information regarding predictive factors for the onset of ALI in severe sepsis is limited. Growth arrest-specific gene 6 (Gas6) is secreted by endothelial cells and is important for the activation of endothelium during inflammation. This study aimed to investigate the predictive effect of plasma Gas6 in patients with severe sepsis. Collection of plasma samples was carried out from 129 participants with severe sepsis following with or without ALI development...
November 2017: Tohoku Journal of Experimental Medicine
Kyung Hee Lee, Eun Mi Choi
Bergenin is the main chemical constituent of plants in the genus Bergenia, which are used in traditional medicines. Methylglyoxal (MG), a highly reactive dicarbonyl compound, is the major precursor for forming advanced glycation end products (AGEs). Pretreating MC3T3-E1 cells with bergenin prevented MG-induced protein adduct formation. Bergenin inhibited the MG-induced soluble receptor for AGE (sRAGE), interleukin, reactive oxygen species and mitochondrial superoxide production. Additionally bergenin increased glyoxalase I activity, glutathione, heme oxygenase-1 and nuclear factor erythroid 2-related factor 2 levels in the presence of MG...
November 17, 2017: Journal of Applied Toxicology: JAT
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
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