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Diabetes methylation

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https://www.readbyqxmd.com/read/29457866/epigenetic-effects-of-metformin-from-molecular-mechanisms-to-clinical-implications
#1
REVIEW
S C Bridgeman, G C Ellison, P E Melton, P Newsholme, Cds Mamotte
There is a growing body of evidence that links epigenetic modifications to type 2 diabetes. Researchers have more recently investigated effects of commonly used medications, including those prescribed for diabetes, on epigenetic processes. This work reviews the influence of the widely used antidiabetic drug metformin on epigenomics, microRNA levels and subsequent gene expression and potential clinical implications. Metformin may influence the activity of numerous epigenetic modifying enzymes, mostly via modulating the activation of AMP-activated protein kinase (AMPK)...
February 19, 2018: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/29456675/correlation-between-ppar-%C3%AE-methylation-level-in-peripheral-blood-and-atherosclerosis-of-nafld-patients-with-dm
#2
Jianghua Ju, Qingxian Huang, Jing Sun, Xiaoyun Zhao, Xiuli Guo, Yongcheng Jin, Wenjie Ma, Wenhui Wang
We investigated the correlation between the methylation levels of peroxisome proliferator-activated receptor-α (PPAR-α) in the peripheral blood and atherosclerosis in patients with nonalcoholic fatty liver disease (NAFLD) with diabetes mellitus (DM). A total of 50 normal subjects (group N) and 50 NAFLD patients with DM (group M) were selected at Qilu Hospital of Shandong University. The levels of total cholesterol (TC), triglyceride (TG), high-density lipoprotein (HDL) and low-density lipoprotein (LDL) in groups N and M were detected...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29447215/maternal-high-fat-diet-associated-with-altered-gene-expression-dna-methylation-and-obesity-risk-in-mouse-offspring
#3
Madeline Rose Keleher, Rabab Zaidi, Shyam Shah, M Elsa Oakley, Cassondra Pavlatos, Samir El Idrissi, Xiaoyun Xing, Daofeng Li, Ting Wang, James M Cheverud
We investigated maternal obesity in inbred SM/J mice by assigning females to a high-fat diet or a low-fat diet at weaning, mating them to low-fat-fed males, cross-fostering the offspring to low-fat-fed SM/J nurses at birth, and weaning the offspring onto a high-fat or low-fat diet. A maternal high-fat diet exacerbated obesity in the high-fat-fed daughters, causing them to weigh more, have more fat, and have higher serum levels of leptin as adults, accompanied by dozens of gene expression changes and thousands of DNA methylation changes in their livers and hearts...
2018: PloS One
https://www.readbyqxmd.com/read/29439250/hoxa5-promotes-adipose-differentiation-via-increasing-dna-methylation-level-and-inhibiting-pka-hsl-signal-pathway-in-mice
#4
Weina Cao, Yatao Xu, Dan Luo, Muhammad Saeed, Chao Sun
BACKGROUND/AIMS: Impaired adipogenesis may be the underlying cause in the development of obesity and type II diabetes. Mechanistically, the family of Homeobox transcription factors is implicated in the regulation of adipocyte fate. Hoxa5 is highly expressed in adipocytes, and its mRNA expression is decreased during differentiation. However, the function of Hoxa5 in adipose tissue has been poorly understood. The aim of this study is to unveil the role of Hoxa5 on adipocyte differentiation and its underlying mechanisms...
February 7, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29436472/a-novel-variant-in-glis3-is-associated-with-osteoarthritis
#5
Elisabetta Casalone, Ioanna Tachmazidou, Eleni Zengini, Konstantinos Hatzikotoulas, Sophie Hackinger, Daniel Suveges, Julia Steinberg, Nigel William Rayner, arcOGEN Consortium, Jeremy Mark Wilkinson, Kalliope Panoutsopoulou, Eleftheria Zeggini
OBJECTIVES: Osteoarthritis (OA) is a complex disease, but its genetic aetiology remains poorly characterised. To identify novel susceptibility loci for OA, we carried out a genome-wide association study (GWAS) in individuals from the largest UK-based OA collections to date. METHODS: We carried out a discovery GWAS in 5414 OA individuals with knee and/or hip total joint replacement (TJR) and 9939 population-based controls. We followed-up prioritised variants in OA subjects from the interim release of the UK Biobank resource (up to 12 658 cases and 50 898 controls) and our lead finding in operated OA subjects from the full release of UK Biobank (17 894 cases and 89 470 controls)...
February 7, 2018: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/29434731/correlation-between-ppar-%C3%AE-methylation-level-in-peripheral-blood-and-inflammatory-factors-of-nafld-patients-with-dm
#6
Jianghua Ju, Qingxian Huang, Jing Sun, Yongcheng Jin, Wenjie Ma, Xiaohui Song, Huibo Sun, Wenhui Wang
The correlation between the methylation levels of peroxisome proliferator-activated receptor-α (PPAR-α) in the peripheral blood and the inflammatory factors associated with non-alcoholic fatty liver disease (NAFLD) patients with diabetes mellitus (DM) was investigated. Thirty-two samples of normal liver tissues (group N) and 35 samples of liver tissues from NAFLD patients with DM (group M) were used for the present study. The levels of alanine transaminase (ALT) and aspartate transaminase (AST) were measured using commercially available kits...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29433927/novel-nicotinamide-analog-as-inhibitor-of-nicotinamide-n-methyltransferase
#7
Sven Ruf, Mahanandeesha Siddappa Hallur, Nisha K Anchan, Indu N Swamy, Karthikai Raj Murugesan, Sayantani Sarkar, Lokesh Kananti Narasimhulu, V P Rama Kishore Putta, Shama Shaik, Devaraj Venkatapura Chandrasekar, Vishal Subhash Mane, Sanjay Venkatachalapathi Kadnur, Juluri Suresh, Ravi Kanth Bhamidipati, Manvi Singh, Raghunadha Reddy Burri, Rajendra Kristam, Herman Schreuder, Joerg Czech, Christine Rudolph, Alexander Marker, Thomas Langer, Ramesh Mullangi, Takeshi Yura, Ramachandraiah Gosu, Aimo Kannt, Saravanakumar Dhakshinamoorthy, Sridharan Rajagopal
Nicotinamide N-methyltransferase (NNMT) has been linked to obesity and diabetes. We have identified a novel nicotinamide (NA) analog, compound 12 that inhibited NNMT enzymatic activity and reduced the formation of 1-methyl-nicotinamide (MNA), the primary metabolite of NA by ∼80% at 2 h when dosed in mice orally at 50 mg/kg.
January 31, 2018: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/29429227/-effect-of-nerve-growth-factor-on-osteogenic-potential-of-type-2-diabetic-mice-bone-marrow-stromal-cell-in-vitro
#8
G S Cui, J Y Zeng, J Zhang, R Lu
Objective: To study the effects of nerve growth factor (NGF) on the proliferation, osteogenic differentiation and mineralization of type 2 diabetic mice bone marrow stromal cell (BMSC), providing basis for clinical application of NGF. Methods: Three 8-week-old male db/db mice and two 8-week-old male C57BL/6J mice were used in the study. BMSC derived from femur were cultured though adherence method. BMSC of C57BL/6J mice and db/db mice was divided into normal group and diabetic group to conduct the osteogenic potential experiment, named experiment one...
February 9, 2018: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/29425818/dna-methylation-of-the-klf14-gene-region-on-whole-blood-provide-prediction-for-the-chronic-inflammation-at-the-adipose-tissue
#9
Chihiro Iwaya, Hidetoshi Kitajima, Ken Yamamoto, Yasutaka Maeda, Noriyuki Sonoda, Hiroki Shibata, Toyoshi Inoguchi
Krüppel-Like Factor 14 (KLF14) gene, which appears to be a master regulator of gene expression on the adipose tissue and have previously been associated with BMI and Type 2 diabetes (T2D) by large GWAS studies. In order to find predictive biomarkers for the development of T2D, it is necessary to take into account changes in the epigenome affected by environmental factors. This study focused on aging and obesity, which are T2D risk factor, and examines epigenetic changes and inflammatory changes. Thus we investigated DNA methylation change at Klf14 promoter region of different organs using mice for comparing aging and weight...
February 6, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29415820/differentially-methylated-circulating-dna-a-novel-biomarker-to-monitor-beta-cell-death
#10
REVIEW
Yingfeng Liu, Qiyuan Tan, Fang Liu
Diabetes mellitus (DM) is a metabolic disorder of glucose homeostasis caused by insufficient secretion or inadequate action of insulin. Nowadays, the increased morbidity of DM is a worldwide issue. Pancreatic beta cell death plays a key role in the progress of DM, especially Type 1 diabetes (T1D). Traditional biomarkers, such as C-peptide and islet autoimmune antibodies are limited to reflect beta cell death and to identify high risk patients in the clinical practice. Recently, a novel biomarker, differentially methylated circulating DNA, has become a research hotspot...
September 1, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/29412141/integration-of-human-pancreatic-islet-genomic-data-refines-regulatory-mechanisms-at-type-2-diabetes-susceptibility-loci
#11
Matthias Thurner, Martijn van de Bunt, Jason M Torres, Anubha Mahajan, Vibe Nylander, Amanda J Bennett, Kyle J Gaulton, Amy Barrett, Carla Burrows, Christopher G Bell, Robert Lowe, Stephan Beck, Vardhman K Rakyan, Anna L Gloyn, Mark I McCarthy
Human genetic studies have emphasised the dominant contribution of pancreatic islet dysfunction to development of Type 2 Diabetes (T2D). However, limited annotation of the islet epigenome has constrained efforts to define the molecular mechanisms mediating the, largely regulatory, signals revealed by Genome-Wide Association Studies (GWAS). We characterised patterns of chromatin accessibility (ATAC-seq, n=17) and DNA methylation (whole-genome bisulphite sequencing, n=10) in human islets, generating high-resolution chromatin state maps through integration with established ChIP-seq marks...
February 7, 2018: ELife
https://www.readbyqxmd.com/read/29410709/genomic-5-mc-contents-in-peripheral-blood-leukocytes-were-independent-protective-factors-for-coronary-artery-disease-with-a-specific-profile-in-different-leukocyte-subtypes
#12
Qianyun Deng, Wei Huang, Chunyan Peng, Jiajia Gao, Zuhua Li, Xueping Qiu, Na Yang, Bifeng Yuan, Fang Zheng
Background: Alterations in DNA methylation are demonstrated in atherosclerosis pathogenesis. However, changing rules of global DNA methylation and hydroxymethylation in peripheral blood leukocytes (PBLs) and different blood cell subtypes of coronary artery disease (CAD) patients are still inconclusive, and much less is known about mechanisms underlying. Results: We recruited 265 CAD patients and 270 healthy controls with genomic DNA from PBLs, of which 50 patients and 50 controls were randomly chosen with DNA from isolated neutrophils, lymphocytes and monocytes, and RNA from PBLs...
2018: Clinical Epigenetics
https://www.readbyqxmd.com/read/29404958/peripheral-and-central-effects-of-memantine-in-a-mixed-preclinical-mice-model-of-obesity-and-familial-alzheimer-s-disease
#13
Miren Ettcheto, Elena Sánchez-López, Yaiza Gómez-Mínguez, Henrry Cabrera, Oriol Busquets, Carlos Beas-Zarate, Maria Luisa García, Eva Carro, Gemma Casadesus, Carme Auladell, Manuel Vázquez Carrera, Jaume Folch, Antoni Camins
There is growing evidence that obesity associated with type 2 diabetes mellitus (T2DM) and aging are risk factors for the development of Alzheimer's disease (AD). However, the molecular mechanisms through which obesity interacts with β-amyloid (Aβ) to promote cognitive decline remains poorly understood. Memantine (MEM), a N-methyl-D-aspartate receptor antagonist, is currently used for the treatment of AD. Nonetheless, few studies have reported its effects on genetic preclinical models of this neurodegenerative disease exacerbated with high-fat diet (HFD)-induced obesity...
February 5, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29402767/bardoxolone-methyl-improves-kidney-function-in-patients-with-chronic-kidney-disease-stage-4-and-type-2-diabetes-post-hoc-analyses-from-bardoxolone-methyl-evaluation-in-patients-with-chronic-kidney-disease-and-type-2-diabetes-study
#14
Melanie P Chin, George L Bakris, Geoffrey A Block, Glenn M Chertow, Angie Goldsberry, Lesley A Inker, Hiddo J L Heerspink, Megan O'Grady, Pablo E Pergola, Christoph Wanner, David G Warnock, Colin J Meyer
BACKGROUND: Increases in measured inulin clearance, measured creatinine clearance, and estimated glomerular filtration rate (eGFR) have been observed with bardoxolone methyl in 7 studies enrolling approximately 2,600 patients with type 2 diabetes (T2D) and chronic kidney disease (CKD). The largest of these studies was Bardoxolone Methyl Evaluation in Patients with Chronic Kidney Disease and Type 2 Diabetes (BEACON), a multinational, randomized, double-blind, placebo-controlled phase 3 trial which enrolled patients with T2D and CKD stage 4...
January 18, 2018: American Journal of Nephrology
https://www.readbyqxmd.com/read/29401509/dna-methylation-mediates-the-effect-of-maternal-cognitive-appraisal-of-a-disaster-in-pregnancy-on-the-child-s-c-peptide-secretion-in-adolescence-project-ice-storm
#15
Lei Cao-Lei, Kelsey N Dancause, Guillaume Elgbeili, David P Laplante, Moshe Szyf, Suzanne King
Animal and human studies suggest that prenatal exposure to stress is associated with adverse health outcomes such as type 2 diabetes. Epigenetic modification, such as DNA methylation, is considered one possible underlying mechanism. The 1998 Quebec ice storm provides a unique opportunity to study an independent prenatal stressor on child outcomes. C-peptide is the best measure of endogenous insulin secretion and is widely used in the clinical management of patients with diabetes. The objectives of this study are to determine 1) the extent to which prenatal exposure to disaster-related stress (maternal objective hardship and maternal cognitive appraisal) influences children's C-peptide secretion, and 2) whether DNA methylation of diabetes-related genes mediates the effects of prenatal stress on C-peptide secretion...
2018: PloS One
https://www.readbyqxmd.com/read/29400994/advances-in-understanding-the-molecular-basis-of-the-mediterranean-diet-effect
#16
Dolores Corella, Oscar Coltell, Fernando Macian, José M Ordovás
Increasingly, studies showing the protective effects of the Mediterranean diet (MedDiet) on different diseases (cardiovascular, diabetes, some cancers, and even total mortality and aging indicators) are being published. The scientific evidence level for each outcome is variable, and new studies are needed to better understand the molecular mechanisms whereby the MedDiet may exercise its effects. Here, we present recent advances in understanding the molecular basis of MedDiet effects, mainly focusing on cardiovascular diseases but also discussing other related diseases...
January 26, 2018: Annual Review of Food Science and Technology
https://www.readbyqxmd.com/read/29398253/t-cells-are-influenced-by-a-long-non-coding-rna-in-the-autoimmune-associated-ptpn2-locus
#17
Miranda Houtman, Klementy Shchetynsky, Karine Chemin, Aase Haj Hensvold, Daniel Ramsköld, Karolina Tandre, Maija-Leena Eloranta, Lars Rönnblom, Steffen Uebe, Anca Irinel Catrina, Vivianne Malmström, Leonid Padyukov
Non-coding SNPs in the protein tyrosine phosphatase non-receptor type 2 (PTPN2) locus have been linked with several autoimmune diseases, including rheumatoid arthritis, type I diabetes, and inflammatory bowel disease. However, the functional consequences of these SNPs are poorly characterized. Herein, we show in blood cells that SNPs in the PTPN2 locus are highly correlated with DNA methylation levels at four CpG sites downstream of PTPN2 and expression levels of the long non-coding RNA (lncRNA) LINC01882 downstream of these CpG sites...
February 2, 2018: Journal of Autoimmunity
https://www.readbyqxmd.com/read/29396966/search-for-pharmacoepigenetic-correlations-in-type-2-diabetes-under-sulfonylurea-treatment
#18
Makrina Karaglani, Georgia Ragia, Maria Panagopoulou, Ioanna Balgkouranidou, Evangelia Nena, George Kolios, Nikolaos Papanas, Vangelis G Manolopoulos, Ekaterini Chatzaki
Sulfonylureas are insulin secretagogues which act in pancreatic β cells by blocking the KATP channels encoded by KCNJ11 and ABCC8 genes. In the present study, a pharmacoepigenetic approach was applied for the first time, investigating the correlation of KCNJ11 and ABCC8 gene promoter methylation with sulfonylureas-induced mild hypoglycemic events as well as the KCNJ11 E23K genotype. Sodium bisulfite-treated genomic DNA of 171 sulfonylureas treated T2DM patients previously genotyped for KCNJ11 E23K, including 88 that had experienced drug-associated hypoglycemia and 83 that had never experienced hypoglycemia, were analyzed for DNA methylation of KCNJ11 and ABCC8 gene promoters via quantitative Methylation-Specific PCR...
February 2, 2018: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/29382920/a-systematic-analysis-highlights-multiple-long-non-coding-rnas-associated-with-cardiometabolic-disorders
#19
Mohsen Ghanbari, Marjolein J Peters, Paul S de Vries, Cindy G Boer, Jeroen G J van Rooij, Yu-Chi Lee, Vinod Kumar, André G Uitterlinden, M Arfan Ikram, Cisca Wijmenga, Jose M Ordovas, Caren E Smith, Joyce B J van Meurs, Stefan J Erkeland, Oscar H Franco, Abbas Dehghan
Genome-wide association studies (GWAS) have identified many susceptibility loci for cardiometabolic disorders. Most of the associated variants reside in non-coding regions of the genome including long non-coding RNAs (lncRNAs), which are thought to play critical roles in diverse biological processes. Here, we leveraged data from the available GWAS meta-analyses on lipid and obesity-related traits, blood pressure, type 2 diabetes, and coronary artery disease and identified 179 associated single-nucleotide polymorphisms (SNPs) in 102 lncRNAs (p-value < 2...
January 30, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29381139/dietary-intake-of-advanced-glycation-endproducts-is-associated-with-higher-levels-of-advanced-glycation-endproducts-in-plasma-and-urine-the-codam-study
#20
Jean L J M Scheijen, Nordin M J Hanssen, Marleen M van Greevenbroek, Carla J Van der Kallen, Edith J M Feskens, Coen D A Stehouwer, Casper G Schalkwijk
BACKGROUND & AIMS: Advanced glycation endproducts (AGEs) are formed by the reaction between reducing sugars and proteins. AGEs in the body have been associated with several age-related diseases. High-heat treated and most processed foods are rich in AGEs. The aim of our study was to investigate whether dietary AGEs, are associated with plasma and urinary AGE levels. METHODS: In 450 participants of the Cohort on Diabetes and Atherosclerosis Maastricht study (CODAM study) we measured plasma and urine concentrations of the AGEs Nε-(carboxymethyl)lysine (CML), Nε-(1-carboxyethyl)lysine (CEL) and Nδ-(5-hydro-5-methyl-4-imidazolon-2-yl)-ornithine (MG-H1) using UPLC-MS/MS...
March 23, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
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