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Inhibition of glycation

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https://www.readbyqxmd.com/read/28729885/cd36-overexpression-a-possible-etiopathogenic-mechanism-of-atherosclerosis-in-patients-with-prediabetes-and-diabetes
#1
M D Lopez-Carmona, M C Plaza-Seron, A Vargas-Candela, F J Tinahones, R Gomez-Huelgas, M R Bernal-Lopez
RATIONALE: CD36 is a scavenger receptor located on monocytes which is involved in foam cell transformation. AIM: To evaluate CD36 expression under different glycemic states in both healthy subjects and in atherosclerotic patients. SUBJECTS AND METHODS: In order to evaluate the possible effects of hyperglycemia on CD36 expression in healthy subjects, an in vitro experiment was carried out using monocyte in three different conditions: extreme hyperglycemia (HG), euglycemia (EG) and in the absence of glucose...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/28729113/activation-of-rage-stat3-pathway-by-methylglyoxal-contributes-to-spinal-central-sensitization-and-persistent-pain-induced-by-bortezomib
#2
Jia-You Wei, Cui-Cui Liu, Han-Dong Ouyang, Chao Ma, Man-Xiu Xie, Meng Liu, Wan-Long Lei, Huan-Huan Ding, Shao-Ling Wu, Wen-Jun Xin
Bortezomib is a first-line chemotherapeutic drug widely used for multiple myeloma and other nonsolid malignancies. Although bortezomib-induced persistent pain is easily diagnosed in clinic, the pathogenic mechanism remains unclear. Here, we studied this issue with use of a rat model of systemic intraperitoneal administration of bortezomib for consecutive 5days. Consisted with our previous study, we found that bortezomib treatment markedly induced mechanical allodynia in rats. Furthermore, we first found that bortezomib treatment significantly induced the upregulation of methylglyoxal in spinal dorsal horn of rats...
July 18, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28728011/anti-inflammatory-effect-of-sugar-amino-acid-maillard-reaction-products-on-intestinal-inflammation-model-in%C3%A2-vitro-and-in%C3%A2-vivo
#3
Jun-Gu Oh, Su-Hyun Chun, Da Hyun Kim, Jin Hye Kim, Hye Soo Shin, Yong Soo Cho, Yong Ki Kim, Hee-Don Choi, Kwang-Won Lee
The Maillard reaction is a nonenzymatic reaction between an amino acid and a reducing sugar that usually occurs upon heating. This reaction occurs routinely in cooking, generates numerous products, which are collectively referred to as Maillard reaction products (MRPs) contributing to aroma and color features. Advanced glycation end-products (AGEs) transformed from MRPs are participated in many types of inflammation reaction. In this study, various sugar-amino acid MRPs were prepared from three different amino acids (lysine, arginine, and glycine) and sugars (glucose, fructose, and galactose) for 1 h with heating at 121 °C...
July 11, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28725625/evaluation-of-effect-of-alcoholic-extract-of-heartwood-of-pterocarpus-marsupium-on-in%C3%A2-vitro-antioxidant-anti-glycation-sorbitol-accumulation-and-inhibition-of-aldose-reductase-activity
#4
Pankaj Gupta, Vivek Jain, Ashutosh Pareek, Preeti Kumari, Randhir Singh, Priyanka Agarwal, Veena Sharma
Rising popularity of phytomedicines in various diseased conditions have strengthened the significance of plant-research and evaluation of phytoextracts in clinical manifestations. Pterocarpus marsupium Roxb., a medicinal plant, known for its anti-oxidant and anti-diabetic activity is a rich source of phytochemicals with antihyperglycemic and antihyperlipidemic activities. However, its possible role in diabetic complications is not evaluated yet. The present study explores the possible role of alcoholic extract of heartwood of P...
July 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/28724746/therapeutic-targeting-tumor-progression-locus-2-tpl2-activating-transcription-factor-4-atf4-chemokine-stromal-cell-derived-factor-%C3%AE-sdf1%C3%AE-axis-suppresses-diabetic-retinopathy
#5
De-Wei Lai, Keng-Hung Lin, Wayne Huey-Herng Sheu, Maw-Rong Lee, Chung-Yu Chen, Wen-Jane Lee, Yi-Wen Hung, Chin-Chang Shen, Tsung-Ju Chung, Shing-Hwa Liu, Meei-Ling Sheu
Rationale: Diabetic retinopathy is characterized by vasopermeability, vascular leakage, inflammation, blood-retinal barrier breakdown, capillary degeneration and neovascularization. However, the mechanisms underlying the association between diabetes and progression retinopathy remain unclear. Objective: Tumor progression locus 2 (TPL2), a serine-threonine protein kinase, exerts a pathological effect on vascular angiogenesis. This study investigated the role of N(ε)-(carboxymethyl)lysine (CML), a major advanced glycation end products, and the involved TPL2-related molecular signals in diabetic retinopathy using models of in vitro and in vivo and human samples...
July 19, 2017: Circulation Research
https://www.readbyqxmd.com/read/28715887/pectin-lyase-modified-red-ginseng-extract-exhibits-potent-anti-glycation-effects-in-vitro-and-in-vivo
#6
Chan-Sik Kim, Kyuhyung Jo, Mi-Kyung Pyo, Jin Sook Kim, Junghyun Kim
PURPOSE: GS-E3D is a newly developed pectin lyase-modified red ginseng extract. The purpose of this study was to evaluate the inhibitory effects of GS-E3D against advanced glycation end products. METHODS: In this study, we evaluated the inhibitory effects of GS-E3D on the formation of advanced glycation end products (AGEs) and their cross-linking with collagen in vitro and in streptozotocin-induced diabetic rats. RESULTS: An in vitro assay for the glycation of bovine serum albumin by methylglyoxal showed that GS-E3D inhibited AGE formation at an IC50 value of 19...
June 30, 2017: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/28713911/glucagon-like-peptide-1-analogue-liraglutide-ameliorates-atherogenesis-via-inhibiting-advanced-glycation-end-product-induced-receptor-for-advanced-glycosylation-end-product-expression-in-apolipoprotein-e-deficient-mice
#7
Peicheng Li, Zhaosheng Tang, Lin Wang, Bo Feng
Glucagon-like peptide-1 (GLP-1) can protect arteriosclerotic lesions in apolipoprotein-E deficient (ApoE-/-) mice. Advanced glycation end products (AGEs)/receptor for advanced glycation end products (RAGE) interaction serves a key role in the development of diabetic vascular complications. The present study examined whether the GLP-1 analogue liraglutide can ameliorate atherogenesis via inhibiting AGEs-induced RAGE expression. Male ApoE-/- mice (age, 10 weeks) were divided into control, GLP-1, AGEs and AGEs+GLP-1 group...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28713206/the-astrocytic-s100b-protein-with-its-receptor-rage-is-aberrantly-expressed-in-sod1-g93a-models-and-its-inhibition-decreases-the-expression-of-proinflammatory-genes
#8
Alessia Serrano, Claudia Donno, Stefano Giannetti, Mina Perić, Pavle Andjus, Nadia D'Ambrosi, Fabrizio Michetti
Neuroinflammation is one of the major players in amyotrophic lateral sclerosis (ALS) pathogenesis, and astrocytes are significantly involved in this process. The astrocytic protein S100B can be released in pathological states activating the receptor for advanced glycation end products (RAGE). Different indications point to an aberrant expression of S100B and RAGE in ALS. In this work, we observed that S100B and RAGE are progressively and selectively upregulated in astrocytes of diseased rats with a tissue-specific timing pattern, correlated to the level of neurodegeneration...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28712835/biological-impact-of-advanced-glycation-endproducts-on-estrogen-receptor-positive-mcf-7-breast-cancer-cells
#9
Sabine Matou-Nasri, Hana Sharaf, Qiuyu Wang, Nasser Almobadel, Zaki Rabhan, Hamad Al-Eidi, Wesam Bin Yahya, Thadeo Trivilegio, Rizwan Ali, Nasser Al-Shanti, Nessar Ahmed
Diabetes mellitus potentiates the risk of breast cancer. We have previously described the pro-tumorigenic effects of advanced glycation endproducts (AGEs) on estrogen receptor (ER)-negative MDA-MB-231 breast cancer cell line mediated through the receptor for AGEs (RAGE). However, a predominant association between women with ER-positive breast cancer and type 2 diabetes mellitus has been reported. Therefore, we have investigated the biological impacts of AGEs on ER-positive human breast cancer cell line MCF-7 using in vitro cell-based assays including cell count, migration, and invasion assays...
July 13, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28712719/ages-rages-and-s-rage-friend-or-foe-for-cancer
#10
REVIEW
Saheem Ahmad, Hamda Khan, Zeba Siddiqui, Mohd Yasir Khan, Shahnawaz Rehman, Uzma Shahab, Tatyana Godovikova, Vladimir Silnikov, Moinuddin
Impaired awareness of glycation biology in cancer initiation and progression is one of the fundamental reasons for its meticulous investigation of the molecules involved in signalling pathway. Glycation of biological macromolecules results in the progression of advanced glycation end-products (AGEs) that proliferates the process of carcinogenesis by activation of transcription factors and release of cytokines. The receptor for advanced glycation end-products (RAGEs) with the binding of its different ligands like; AGEs, HMGB1 and S100 activate the signalling arrays...
July 13, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28708885/pioglitazone-ameliorates-glomerular-nlrp3-inflammasome-activation-in-apolipoprotein-e-knockout-mice-with-diabetes-mellitus
#11
Yao Wang, Bo Yu, Li Wang, Ming Yang, Zhiyin Xia, Wei Wei, Fengyu Zhang, Xiaochen Yuan
OBJECTIVE: The NLRP3 inflammasome plays an important role in the pathogenesis of inflammation in diabetic nephropathy (DN). Pioglitazone (PIO) has been found to exert an anti-inflammatory effect in patients with diabetes mellitus, but it is still unclear whether PIO exhibits a similar effect in DN. We aimed to explore the effect and underlying mechanism of PIO on DN, as well as investigate if NLRP3 is a pharmacologic target of PIO. METHODS: We divided 48 apolipoprotein E (apoE) (-/-) mice into 4 groups: apoE (-/-), apoE (-/-) with PIO, diabetic apoE (-/-), and diabetic apoE (-/-) with PIO...
2017: PloS One
https://www.readbyqxmd.com/read/28699798/durability-of-response-to-dapagliflozin-a-review-of-long-term-efficacy-and-safety
#12
Serge Jabbour
BACKGROUND: Due to the chronic nature of type 2 diabetes (T2D), it is essential for an antidiabetic drug to have durable efficacy and a good long-term safety profile. Dapagliflozin is a member of a unique class of antidiabetic drugs that inhibit the sodium-glucose cotransporter 2 (SGLT-2) in the renal tubules and have an insulin-independent mechanism of action. In short-term studies (≤24 weeks), dapagliflozin reduced glycated hemoglobin (A1c), weight, and systolic blood pressure, and had a good safety profile...
July 12, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28693201/s100p-is-associated-with-proliferation-and-migration-in-nasopharyngeal-carcinoma
#13
Yueyang Liu, Chengyu Wang, Xiaodong Shan, Jian Wu, Huanhai Liu, Haibin Liu, Jiping Zhang, Weihua Xu, Zhirong Sha, Jin He, Jingping Fan
In the present study, the function of S100 calcium binding protein P (S100P) in the C666-1 nasopharyngeal carcinoma (NPC) cell line was examined. The levels of S100P protein in NPC tissues were analyzed using immunohistochemistry, and small interfering RNA silenced S100P expression in C666-1 cells. Subsequently, cell proliferation, colony formation, migration and wound-healing assays were performed in order to assess whether the knockdown of S100P was able to influence the biological behavior of C666-1 cells...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28690125/carbamylation-is-a-competitor-of-glycation-for-protein-modification-in-vivo
#14
C Nicolas, S Jaisson, L Gorisse, F J Tessier, C Niquet-Léridon, P Jacolot, C Pietrement, P Gillery
AIM: Chronic kidney disease (CKD) and diabetes mellitus are two diseases that accelerate protein molecular ageing through carbamylation and glycation reactions, characterized by the binding of urea-derived isocyanic acid and of sugars on proteins, respectively. These two reactions target the same protein amino groups and, thus, compete with each other. Such competition may arise especially in diabetic patients with nephropathy. This study aimed to evaluate their potential competitive effects in vitro and under conditions reproducing CKD and/or diabetes in vivo...
July 6, 2017: Diabetes & Metabolism
https://www.readbyqxmd.com/read/28683566/inhibition-of-mir-92a-suppresses-oxidative-stress-and-improves-endothelial-function-by-upregulating-heme-oxygenase-1-in-db-db-mice
#15
Lingshan Gou, Lei Zhao, Wencong Song, Li Wang, Jian Liu, Hongsong Zhang, Yuhong Huang, Chi Wai Lau, Xiaoqiang Yao, Xiaoyu Tian, Wing Tak Wong, Jiang-Yun Luo, Yu Huang
AIMS: Inhibition of microRNA-92a (miR-92a) is reported to suppress endothelial inflammation and delay atherogenesis. We hypothesize that miR-92a inhibition protects endothelial function through suppressing oxidative stress in diabetic db/db mice. RESULTS: In this study, we found elevated expression of miR-92a in aortic endothelium from db/db mice and in renal arteries from diabetic subjects. Endothelial cells (ECs) exposed to advanced glycation end products (AGEs) and oxidized LDL (oxLDL) express higher level of miR-92a...
July 6, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28682730/the-influence-of-ages-environment-on-proliferation-apoptosis-homeostasis-and-endothelial-cell-differentiation-of-human-adipose-stem-cells
#16
Jia-Hong Gong, Jiao-Yun Dong, Ting Xie, Shu-Liang Lu
The aim of this study was to evaluate the changes of proliferation, apoptosis, homeostasis, and differentiation of human adipose-derived stem cells (hASCs) in the simulated diabetic microenvironment and discuss the potential of the mesenchymal stem cell in the treatment of chronic diabetic wound. We simulated diabetic microenvironment with glycation end products (AGEs) in vitro and studied the changes of hASCs in proliferation and apoptosis. We found that AGEs inhibited the proliferation and lead to hASCs apoptosis, and the endothelial cell directed differentiation was also inhibited...
June 2017: International Journal of Lower Extremity Wounds
https://www.readbyqxmd.com/read/28677735/mir%C3%A2-199a%C3%A2-3p-is-involved-in-the-pathogenesis-and-progression-of-diabetic-neuropathy-through-downregulation-of-serpine2
#17
Ying-Bo Li, Qun Wu, Jie Liu, Yong-Zhi Fan, Kai-Feng Yu, Yi Cai
The present study aimed to investigate the expression status of miRNA‑199a‑3p in patients with diabetic neuropathy (DN) and the mechanism by which this miRNA is involved in the genesis of DN. The expression of miRNA‑199a‑3p in plasma of peripheral blood was compared between patients with diabetes and a family history of diabetes and control volunteers by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR); in 60 diabetes patients, 45 (75%) demosntrated upregulated miR‑199a‑3p expression compared with control volunteer plasma...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28670367/silencing-of-advanced-glycosylation-and-glycosylation-and-product-specific-receptor-rage-inhibits-the-metastasis-and-growth-of-non-small-cell-lung-cancer
#18
Yan Xia Yu, Wen Chong Pan, Yu Feng Cheng
Non-small cell lung cancer (NSCLC) constitutes the main cases of lung cancer and is the world's most common and lethal cancer owing to regional invasion or distant metastasis. Growing morbidity and lethality demonstrates that valid molecular target in management of NSCLC metastasis is still absence. The receptor of advanced glycation end-products (RAGE) has been identified as an oncogenic gene and appears to promote the growth and metastasis of various cancers. Here, we investigated if RAGE targeted by RNA interference (RNAi) might have certain effect on the restraint of the growth of NSCLC and tumor metastasis...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28669853/effect-of-sirolimus-on-arteriosclerosis-induced-by-advanced-glycation-end-products-via-inhibition-of-the-ilk-mtor-pathway-in-kidney-transplantation-recipients
#19
Zhen Xu, Xuzhong Liu, Zijie Wang, Jun Tao, Zhijian Han, Min Gu, Wei Zhang, Ruoyun Tan
To investigate the effect and related mechanism of sirolimus (SRL) in arteriosclerosis(AS) induced by advanced glycation end products (AGEs) in kidney transplantation recipients (KTRs).Human kidney tissues from KTRs before and after treatment with SRL were assessed by hematoxylin-eosin and immunohistochemical staining. Rat vascular smooth muscle cells (VSMCs) were treated with AGEs and/or SRL. The expressions of α-smooth muscle actin (α-SMA), osteopontin (OPN), actinin-associated LIM protein (ALP), proliferating cell nuclear antigen (PCNA), integrin-linked kinase (ILK) and the mTOR signaling pathway proteins were examined using western blot assay...
June 29, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28659153/advanced-glycation-end-products-ages-increase-renal-lipid-accumulation-a-pathogenic-factor-of-diabetic-nephropathy-dn
#20
Yang Yuan, Hong Sun, Zilin Sun
BACKGROUND: Advanced glycation end products (AGEs) are pathogenic factors of diabetic nephropathy (DN), causing renal damage in various ways. The aim of this study is to investigate the ectopic lipid accumulation caused by AGEs in human renal tubular epithelial cell line (HK-2) cells and the kidney of type 2 diabetic rats. METHODS: In vivo study, diabetes was induced in male Sprague-Dawley rats through intraperitoneal injection of high-fat/high-sucrose diet and low-dose streptozocin (STZ)...
June 28, 2017: Lipids in Health and Disease
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