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Advanced glycation end products

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https://www.readbyqxmd.com/read/28440769/advanced-glycation-end-products-in-morbid-obesity-and-after-bariatric-surgery-when-glycemic-memory-starts-to-fail
#1
Enric Sánchez, Juan Antonio Baena-Fustegueras, María Cruz de la Fuente, Liliana Gutiérrez, Marta Bueno, Susana Ros, Albert Lecube
BACKGROUND AND OBJECTIVE: Advanced glycation end-products (AGEs) are a marker of metabolic memory. Their levels increases when oxidative stress, inflammation, or chronic hyperglycemia exists. The role of morbid obesity in AGE levels, and the impact of bariatric surgery on them are unknown. PATIENTS AND METHOD: An observational study with three sex- and age-matched cohorts: 52 patients with obesity, 46 patients undergoing bariatric surgery in the last 5 years, and 46 control subjects...
January 2017: Endocrinol Diabetes Nutr
https://www.readbyqxmd.com/read/28439258/diabetic-cardiomyopathy-an-immunometabolic-perspective
#2
REVIEW
Paras K Mishra, Wei Ying, Shyam Sundar Nandi, Gautam K Bandyopadhyay, Kaushik K Patel, Sushil K Mahata
The heart possesses a remarkable inherent capability to adapt itself to a wide array of genetic and extrinsic factors to maintain contractile function. Failure to sustain its compensatory responses results in cardiac dysfunction, leading to cardiomyopathy. Diabetic cardiomyopathy (DCM) is characterized by left ventricular hypertrophy and reduced diastolic function, with or without concurrent systolic dysfunction in the absence of hypertension and coronary artery disease. Changes in substrate metabolism, oxidative stress, endoplasmic reticulum stress, formation of extracellular matrix proteins, and advanced glycation end products constitute the early stage in DCM...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28439061/-calcium-and-bone-metabolism-across-women-s-life-stages-bone-quality-and-treatment-of-osteoporosis-by-serm
#3
Mitsuru Saito, Keishi Marumo
Estrogen deficiency induces bone resorption and bone collagen crosslink abnormalities such as reductions in enzymatic cross-links and accumulation of Advanced glycation end products(AGEs). In this review, we described that the mechanism of poor bone quality in estrogen deficiency and how selective estrogen receptor modulators such as raloxifene and bazedoxifene improve bone structural and material properties.
2017: Clinical Calcium
https://www.readbyqxmd.com/read/28434937/defining-a-research-agenda-to-address-the-converging-epidemics-of-tuberculosis-and-diabetes-part-2-underlying-biological-mechanisms
#4
REVIEW
Katharina Ronacher, Reinout van Crevel, Julia Critchley, Andrew A Bremer, Larry S Schlesinger, Anil Kapur, Randall Basaraba, Hardy Kornfeld, Blanca I Restrepo
There is growing interest in the re-emerging interaction between type 2 diabetes (DM) and tuberculosis (TB), but the underlying biological mechanisms are poorly understood despite their possible implications in clinical management. Experts in epidemiological, public health, basic science and clinical studies recently convened and identified research priorities for elucidating the underlying mechanisms for the co-ocurrence of TB and DM. We identified gaps in current knowlege of altered immunity in DM patients during TB, where most studies suggest an under-performing innate immunity, but exaggerated adaptive immunity to Mycobacterium tuberculosis...
April 19, 2017: Chest
https://www.readbyqxmd.com/read/28434257/ratio-of-serum-levels-of-ages-to-soluble-rage-is-correlated-with-trimethylamine-n-oxide-in-non-diabetic-subjects
#5
Atsuko Tahara, Nobuhiro Tahara, Sho-Ichi Yamagishi, Akihiro Honda, Sachiyo Igata, Yoshikazu Nitta, Munehisa Bekki, Tomohisa Nakamura, Yoichi Sugiyama, Jiahui Sun, Masayoshi Takeuchi, Makiko Shimizu, Hiroshi Yamazaki, Kei Fukami, Yoshihiro Fukumoto
Trimethylamine (TMA), an intestinal microflora-dependent metabolite formed from phosphatidylcholine- and L-carnitine-rich food, such as red meat, is further converted to trimethylamine-N-oxide (TMAO), which could play a role in cardiometabolic disease. Red meat-derived products are one of the major environmental sources of advanced glycation end products (AGEs) that may also contribute to the pathogenesis of cardiometabolic disorders through the interaction with receptor for AGEs (RAGE). However, the relationship among AGEs, soluble form of RAGE (sRAGE) and TMAO in humans remains unclear...
April 23, 2017: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/28434032/diabetes-bone-and-glucose-lowering-agents-basic-biology
#6
REVIEW
Beata Lecka-Czernik
Skeletal fragility often accompanies diabetes and does not appear to correlate with low bone mass or trauma severity in individuals with diabetes. Instead (and in contrast to those with osteoporotic bone disease), bone remodelling and bone turnover are compromised in both type 1 and type 2 diabetes, contributing to defective bone material quality. This review is one of a pair discussing the relationship between diabetes, bone and glucose-lowering agents; an accompanying review is provided in this issue of Diabetologia by Ann Schwartz (DOI: 10...
April 22, 2017: Diabetologia
https://www.readbyqxmd.com/read/28433998/interferon-%C3%AE-1a-modulates-expression-of-rage-but-not-s100a12-and-nuclear-factor-%C3%AE%C2%BAb-in-multiple-sclerosis-patients
#7
Gholamreza Asadikaram, Saam Noroozi, Hossein Ali Ebrahimi Meimand, Mojgan Sanjari, Nahid Zainodini, Hossein Khoramdelazad, Nader Shahrokhi, Mohammad Kazemi Arababadi
OBJECTIVES: Interferon-β 1a (IFN-β 1a) is a common strategy therapy for multiple sclerosis (MS) with unknown mechanisms. S100A12 (S100 calcium-binding protein A12) is a damage-associated molecular pattern molecule which binds to its receptor, RAGE (receptor for advanced glycation end products), and activates nuclear factor-κB (NF-κB). NF-κB is transcribed from proinflammatory molecules, which may participate in the pathogenesis of MS. Therefore, the aims of this study were to compare mRNA levels of S100A12, RAGE, and NF-κB in newly diagnosed MS patients with healthy controls and determine whether IFN-β 1a therapy affects the expression of the molecules...
April 22, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28431540/prevention-of-advanced-glycation-end-products-formation-in-diabetic-rats-through-beta-cell-modulation-by-aegle-marmelos
#8
Rahman M Hafizur, Shahrukh Momin, Noor Fatima
BACKGROUND: Although the anti-diabetic activity of Aegle marmelos (AM) is known, however, its anti-glycation activity is not reported yet. In this study, we have investigated its anti-glycation activity under in vitro and in vivo conditions and determined possible mechanism(s) in streptozotocin-induced diabetic rats. METHODS: Effective dose of AM (400 mg/kg) was administrated orally to diabetic rats for 42 days. Thereafter, blood glucose, serum insulin, HbA1c, antioxidant status, and advanced glycation end-products (AGEs) were measured...
April 21, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28427563/neuroinflammation-in-alzheimer-s-disease-the-preventive-and-therapeutic-potential-of-polyphenolic-nutraceuticals
#9
Yousef Sawikr, Nagendra Sastry Yarla, Ilaria Peluso, Mohammad Amjad Kamal, Gjumrakch Aliev, Anupam Bishayee
Brain inflammation, characterized by increased microglia and astrocyte activation, increases during aging and is a key feature of neurodegenerative diseases, such as Alzheimer's disease (AD). In AD, neuronal death and synaptic impairment, induced by amyloid-β (Aβ) peptide, are at least in part mediated by microglia and astrocyte activation. Glial activation results in the sustained production of proinflammatory cytokines and reactive oxygen species, giving rise to a chronic inflammatory process. Astrocytes are the most abundant glial cells in the central nervous system and are involved in the neuroinflammation...
2017: Advances in Protein Chemistry and Structural Biology
https://www.readbyqxmd.com/read/28427390/advanced-glycation-end-products-decreases-expression-of-endothelial-nitric-oxide-synthase-through-oxidative-stress-in-human-coronary-artery-endothelial-cells
#10
Xiaomei Ren, Liqun Ren, Qin Wei, Hua Shao, Long Chen, Naifeng Liu
BACKGROUND: Advanced glycation end-products (AGEs) are elevated under diabetic conditions and associated with insulin resistance, endothelial dysfunction and vascular inflammation in humans. It has been demonstrated that AGEs evoke oxidative and inflammatory reactions in endothelial cells through the interaction with a receptor for AGEs (RAGE). Here, we aimed to identify the cellular mechanisms by which AGEs exacerbate the endothelial dysfunction in human coronary artery endothelial cells (HCAECs)...
April 20, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28427050/expression-of-high-mobility-group-protein-b1-in-cardiac-tissue-of-elderly-patients-with-coronary-artery-disease-with-or-without-inflammatory-rheumatic-disease
#11
Mei Bruton, Ivana Hollan, Julie Xiao, Eva Lindroos, Knut Mikkelsen, Stein E Rynning, Kjell Saatvedt, Sven M Almdahl, Helena E Harris, Ingrid E Lundberg, Cecilia Wick
BACKGROUND: It is known from clinical practice and observational studies that elderly patients with a diagnosis of inflammatory rheumatic diseases (IRD) bear a significantly increased risk for cardiovascular diseases such as coronary artery disease (CAD) and heart failure. The molecular mechanism, however, is still not known. Recently, high mobility group protein B1 (HMGB1), a ubiquitous, highly conserved single polypeptide expressed in all mammal eukaryotic cells, has been identified to mediate myocardial dysfunction in vitro once released from the nuclei of cardiomyocytes...
April 21, 2017: Gerontology
https://www.readbyqxmd.com/read/28426531/high-fat-feeding-protects-mice-from-ventilator-induced-lung-injury-via-neutrophil-independent-mechanisms
#12
Michael R Wilson, Joanne E Petrie, Michael W Shaw, Cong Hu, Charlotte M Oakley, Samantha J Woods, Brijesh V Patel, Kieran P O'Dea, Masao Takata
OBJECTIVE: Obesity has a complex impact on acute respiratory distress syndrome patients, being associated with increased likelihood of developing the syndrome but reduced likelihood of dying. We propose that such observations are potentially explained by a model in which obesity influences the iatrogenic injury that occurs subsequent to intensive care admission. This study therefore investigated whether fat feeding protected mice from ventilator-induced lung injury. DESIGN: In vivo study...
April 19, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28420460/-bone-marrow-mesenchymal-stem-cells-modulated-the-inflammatory-response-by-regulating-the-expression-of-il-4-and-rage-products-in-the-rats-with-mods
#13
Xia Zhou, Guanghui Xiu, Yichao Zhu, Xiaolei Chen, Wei Xiong, Xinghua Pan, Jie Sun, Bin Ling
OBJECTIVE: To investigate the underlying mechanism of bone marrow mesenchymal stem cells (BMSC) modulating the inflammatory response during the multiple organ dysfunction syndrome (MODS), especially the expression of inflammatory cytokines, which will provide new theoretical and experimental basis of MODS in clinic. METHODS: BMSC of Sprague-Dawley (SD) rat (female, 4 weeks) was extracted and cultivated, and the 4th passage were used in experimental study. According to the random number table, 60 female SD rats were divided into three groups (n = 20 per group): sham group, MODS group, BMSC group...
April 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28415753/high-mobility-group-box-1-antagonist-limits-metastatic-seeding-in-the-lungs-via-reduction-of-cell-cell-adhesion
#14
Adi Karsch-Bluman, Benzion Amoyav, Nethanel Friedman, Hila Shoval, Ouri Schwob, Ezra Ella, Ori Wald, Ofra Benny
Metastatic spread is the leading cause for cancer-related mortality, with the lungs being a major site for metastatic seeding. Available therapies for patients with metastatic disease are extremely limited. Therefore, there is a desperate need for new strategies to prevent or limit metastatic dissemination and treat existing metastases. The metastatic cascade is highly complex and is affected by multiple factors related to both tumor cells themselves and the microenvironment in the future site of metastasis...
March 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28409494/association-between-metabolically-healthy-central-obesity-in-women-and-levels-of-soluble-receptor-for-advanced-glycation-end-products-soluble-vascular-adhesion-protein-1-and-the-activity-of-semicarbazide-sensitive-amine-oxidase
#15
Ivana Koborová, Radana Gurecká, Melinda Csongová, Katarína Volkovová, Éva Szökő, Tamás Tábi, Katarína Šebeková
AIM: To determine the levels of circulating soluble receptor for advanced glycation end products (sRAGE), as a biomarker of risk of metabolic syndrome and cardiovascular disease development in centrally obese (CO) women considered metabolically healthy (COH) in comparison with those metabolically unhealthy (COU). METHODS: 47 lean healthy, 17 COH (presenting waist-to-height ratio ≥0.5 but not elevated blood pressure, atherogenic lipid profile, and insulin resistance), and 50 COU (CO presenting ≥2 risk factors) women aged 40-45 years were included...
April 14, 2017: Croatian Medical Journal
https://www.readbyqxmd.com/read/28407670/methylglyoxal-and-advanced-glycation-end-products-in-patients-with-diabetes-what-we-know-so-far-and-the-missing-links
#16
Jan Benedikt Groener, Dimitrios Oikonomou, Ruan Cheko, Zoltan Kender, Johanna Zemva, Lars Kihm, Martina Muckenthaler, Verena Peters, Thomas Fleming, Stefan Kopf, Peter P Nawroth
Hyperglycemia explains the development of late diabetic complications in patients with diabetes type 1 and type 2 only partially. Most therapeutic efforts relying on intensive glucose control failed to decrease the absolute risk for complications by more than 10%, especially in patients with diabetes type 2. Therefore, alternative pathophysiological pathways have to be examined, in order to develop more individualized treatment options for patients with diabetes in the future. One such pathway might be the metabolism of dicarbonyls, among them methylglyoxal and the accumulation of advanced glycation end products...
April 13, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28407658/effect-of-carnosine-on-renal-function-oxidation-and-glycation-products-in-the-kidneys-of-high-fat-diet-streptozotocin-induced-diabetic-rats
#17
Abdurrahman Fatih Aydın, Canan Küçükgergin, İlknur Bingül, Işın Doğan-Ekici, Semra Doğru-Abbasoğlu, Müjdat Uysal
High fat diet (HFD) and low dose of streptozotocin (STZ)-treated rats provide an animal model for type 2 Diabetes Mellitus (T2DM). Oxidative stress plays a role in the development of diabetic complications. Carnosine (CAR) has antioxidant and antiglycating properties. We investigated effects of CAR on renal function, oxidation and glycation products in HFD+STZ-rats. Rats were fed with HFD (60% of total calories from fat) for 4 weeks and then a single dose STZ (40 mg/kg; i.p.) was applied. Rats with blood glucose levels above 200 mg/dL were fed with HFD until the end of the 12(th) week...
April 13, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/28407046/rage-mediated-extracellular-matrix-proteins-accumulation-exacerbates-hysu-induced-pulmonary-hypertension
#18
Daile Jia, Yuhu He, Qian Zhu, Huan Liu, Caojian Zuo, Guilin Chen, Ying Yu, Ankang Lu
Aims: Extracellular matrix (ECM) proteins accumulation contributes to the progression of pulmonary arterial hypertension (PAH), a rare and fatal cardiovascular condition defined by high pulmonary arterial pressure, whether primary, idiopathic, or secondary to other causes. The receptor for advanced glycation end products (RAGE) is constitutively expressed in the lungs and plays an important role in ECM deposition. Nonetheless, the mechanisms by which RAGE mediates ECM deposition/formation in pulmonary arteries and its roles in PAH progression remain unclear...
April 11, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28405811/advanced-glycation-end-products-as-a-biomarker-for-incisional-hernia
#19
J J Harlaar, H H Eker, K A Vakalopoulos, M C Cabezas, A C van der Ham, W W Vrijland, J Jeekel, J F Lange
BACKGROUND: Incisional hernia is one of the most frequent complications after abdominal surgery, with incidences up to 30%. A reliable biomarker for the prediction of this complication is lacking. Advanced glycosylation end products (AGEs), also known as non-enzymatic collagen crosslinks, are correlated with aging, smoking, hyperglycemia, hyperlipidemia and oxidative stress. In this study the accumulation of AGEs and the relation between AGEs and incisional hernia were investigated. MATERIALS AND METHODS: In an exploratory case-control study, 23 patients with incisional hernia after midline incision were compared with 17 patients without clinical or radiological signs of incisional hernia after midline incision, AGEs were measured using a Skin Auto Fluorescence (SAF)-reader...
April 12, 2017: Hernia: the Journal of Hernias and Abdominal Wall Surgery
https://www.readbyqxmd.com/read/28404521/diabetic-complications-in-the-cornea
#20
Alexander V Ljubimov
Diabetic corneal alterations, such as delayed epithelial wound healing, edema, recurrent erosions, neuropathy/loss of sensitivity, and tear film changes are frequent but underdiagnosed complications of both type 1 (insulin-dependent) and type 2 (non-insulin-dependent) diabetes mellitus. The disease affects corneal epithelium, corneal nerves, tear film, and to a lesser extent, endothelium, and also conjunctiva. These abnormalities may appear or become exacerbated following trauma, as well as various surgeries including retinal, cataract or refractive...
April 9, 2017: Vision Research
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