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MicroRNA & diabetes

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https://www.readbyqxmd.com/read/28185533/mapping-the-methylation-status-of-the-mir-145-promoter-in-saphenous-vein-smooth-muscle-cells-from-individuals-with-type-2-diabetes
#1
Kirsten Riches, John Huntriss, Claire Keeble, Ian C Wood, David J O'Regan, Neil A Turner, Karen E Porter
Type 2 diabetes mellitus prevalence is growing globally, and the leading cause of mortality in these patients is cardiovascular disease. Epigenetic mechanisms such as microRNAs (miRs) and DNA methylation may contribute to complications of type 2 diabetes mellitus. We discovered an aberrant type 2 diabetes mellitus-smooth muscle cell phenotype driven by persistent up-regulation of miR-145. This study aimed to determine whether elevated expression was due to changes in methylation at the miR-145 promoter. Smooth muscle cells were cultured from saphenous veins of 22 non-diabetic and 22 type 2 diabetes mellitus donors...
March 2017: Diabetes & Vascular Disease Research
https://www.readbyqxmd.com/read/28185128/effects-of-trpm7-mir-34a-gene-silencing-on-spatial-cognitive-function-and-hippocampal-neurogenesis-in-mice-with-type-1-diabetes-mellitus
#2
Qing-Jiu Zhang, Jie Li, Song-Yun Zhang
This study aimed to explore the effects of transient receptor potential melastatin 7 (TRPM7)/microRNA-34a (miR-34a) gene silencing on spatial cognitive function and hippocampal neurogenesis in mice with type 1 diabetes mellitus (T1DM). BALB/c mice were chosen to establish T1DM models and divided into five groups respectively: the negative control (NC), T1DM, T1DM + si-TRPM7, T1DM + si-miR-34a, and T1DM + si-TRPM7 + si-miR-34a groups. Morris water maze (MWM) test was adopted to observe behavioral alterations in mice...
February 9, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28183786/extracellular-rnas-are-associated-with-insulin-resistance-and-metabolic-phenotypes
#3
Ravi Shah, Venkatesh Murthy, Michael Pacold, Kirsty Danielson, Kahraman Tanriverdi, Martin G Larson, Kristina Hanspers, Alexander Pico, Eric Mick, Jared Reis, Sarah de Ferranti, Elizaveta Freinkman, Daniel Levy, Udo Hoffmann, Stavroula Osganian, Saumya Das, Jane E Freedman
OBJECTIVE: Insulin resistance (IR) is a hallmark of obesity and metabolic disease. Circulating extracellular RNAs (ex-RNAs), stable RNA molecules in plasma, may play a role in IR, though most studies on ex-RNAs in IR are small. We sought to characterize the relationship between ex-RNAs and metabolic phenotypes in a large community-based human cohort. RESEARCH DESIGN AND METHODS: We measured circulating plasma ex-RNAs in 2,317 participants without diabetes in the Framingham Heart Study (FHS) Offspring Cohort at cycle 8 and defined associations between ex-RNAs and IR (measured by circulating insulin level)...
February 9, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28181241/interplay-between-mirnas-and-human-diseases-a-review
#4
REVIEW
Prosenjit Paul, Anindya Chakraborty, Debasree Sarkar, Malobika Langthasa, Musfhia Rahman, Minakshi Bari, Rk Sanamacha Singha, Arup Kumar Malakar, Supriyo Chakraborty
MicroRNAs (miRNAs) are endogenous, non-coding RNAs, which have evoked a great deal of interest due to their importance in many aspects of homeostasis and diseases. MicroRNAs are stable and are essential components of gene regulatory networks. They play a crucial role in healthy individuals and their dysregulations have also been implicated in a wide range of diseases, including diabetes, cardiovascular disease, kidney disease and cancer. This review summarized the current understanding of interactions between miRNAs and different diseases and their role in disease diagnosis and therapy...
February 9, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28178938/messenger-rna-and-microrna-transcriptomic-signatures-of-cardiometabolic-risk-factors
#5
David D McManus, Jian Rong, Tianxiao Huan, Sean Lacey, Kahraman Tanriverdi, Peter J Munson, Martin G Larson, Roby Joehanes, Venkatesh Murthy, Ravi Shah, Jane E Freedman, Daniel Levy
BACKGROUND: Cardiometabolic (CM) risk factors are heritable and cluster in individuals. We hypothesized that CM risk factors are associated with multiple shared and unique mRNA and microRNA (miRNA) signatures. We examined associations of mRNA and miRNA levels with 6 CM traits: body mass index, HDL-cholesterol and triglycerides, fasting glucose, and systolic and diastolic blood pressures through cross-sectional analysis of 2812 Framingham Heart Study who had whole blood collection for RNA isolation for mRNA and miRNA expression studies and who consented to genetic research...
February 8, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28170537/adenosine-deaminase-2-induced-hyperpermeability-in-human-retinal-vascular-endothelial-cells-is-suppressed-by-microrna-146b-3p
#6
Yara A Samra, Heba M Saleh, Khaled A Hussein, Nehal M Elsherbiny, Ahmed S Ibrahim, Khaled Elmasry, Sadanand Fulzele, Mamdouh M El-Shishtawy, Laila A Eissa, Mohamed Al-Shabrawey, Gregory I Liou
Purpose: We recently demonstrated that adenosine deaminase-2 (ADA2) contributes to diabetic retinopathy (DR) via up-regulating the production of inflammatory cytokines in macrophages. Also, microRNA (miR)-146b-3p has the ability to inhibit ADA2. The goal of this study was to investigate the potential role of ADA2 and therapeutic benefit of miR-146b-3p in retinal inflammation and endothelial barrier dysfunction during diabetes. Methods: Adenosine deaminase-2 activity was determined by colorimetric method in diabetic human vitreous...
February 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28169059/the-diagnostic-sensitivity-of-circulating-cardio-enriched-micrornas-is-increased-after-normalization-of-high-density-lipoprotein-levels
#7
Thrishila Parshu Ram, Ingrid Fomison-Nurse, Sophie Gandhi, Sean Coffey, Pankaj Saxena, Ivor Galvin, Richard Bunton, Michael J A Williams, Regis R Lamberts, Rajesh Katare
BACKGROUND: Emerging evidence suggests that microRNAs (miRs) could be a potential biomarker to identify early molecular alterations in the heart. HDL are the major carriers for miRs into the circulation. This study tested whether changes in the level of HDL could affect the diagnostic sensitivity of miRs. METHODS AND RESULTS: Peripheral blood samples were collected from 20 diabetic and 22 age and gender matched non-diabetic patients undergoing coronary artery bypass graft (CABG) surgery for ischemic heart disease (IHD)...
January 26, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28167956/micrornas-dependent-regulation-of-ppars-in-metabolic-diseases-and-cancers
#8
REVIEW
Dorothea Portius, Cyril Sobolewski, Michelangelo Foti
Peroxisome proliferator-activated receptors (PPARs) are a family of ligand-dependent nuclear receptors, which control the transcription of genes involved in energy homeostasis and inflammation and cell proliferation/differentiation. Alterations of PPARs' expression and/or activity are commonly associated with metabolic disorders occurring with obesity, type 2 diabetes, and fatty liver disease, as well as with inflammation and cancer. Emerging evidence now indicates that microRNAs (miRNAs), a family of small noncoding RNAs, which fine-tune gene expression, play a significant role in the pathophysiological mechanisms regulating the expression and activity of PPARs...
2017: PPAR Research
https://www.readbyqxmd.com/read/28137588/long-noncoding-rna-tgu1-alleviates-extracellular-matrix-accumulation-via-mediating-microrna-377-targeting-of-ppar%C3%AE-in-diabetic-nephropathy
#9
Min Ding, Li-Jun Hou, Qian Yu, Yun-Zhi Xing, Mei-Jun Wang, Ting-Wei Zhang, Peng-Hua Wang, De-Min Yu, Chun-Jun Li
Long noncoding RNA taurine-upregulated gene 1 (lncRNA TGU1) has been reported to play a key role in the progression of diabetic nephropathy (DN). However, the role of lncRNA TGU1 in the regulation of diabetic nephropathy remains largely unknown. The aim of the present study is to identify the regulation of lncRNA TGU1 on extracellular matrix accumulation via mediating microRNA-377 targeting of PPARγ, and investigate the underlying mechanisms in progression of DN. Microarray was performed to screen differentially expressed miRNAs in db/db DN mice...
January 27, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28129112/therapeutic-mir-21-silencing-ameliorates-diabetic-kidney-disease-in-mice
#10
Malte Kölling, Tamas Kaucsar, Celina Schauerte, Anika Hübner, Angela Dettling, Joon-Keun Park, Martin Busch, Xaver Wulff, Matthias Meier, Kristian Scherf, Nóra Bukosza, Gábor Szénási, Mária Godó, Amit Sharma, Michael Heuser, Peter Hamar, Claudia Bang, Hermann Haller, Thomas Thum, Johan M Lorenzen
Diabetic nephropathy is the main cause of end-stage renal disease. MicroRNAs are powerful regulators of the genome, and global expression profiling revealed miR-21 to be among the most highly regulated microRNAs in kidneys of mice with diabetic nephropathy. In kidney biopsies of diabetic patients, miR-21 correlated with tubulointerstitial injury. In situ PCR analysis showed a specific enrichment of miR-21 in glomerular cells. We identified cell division cycle 25a (Cdc25a) and cyclin-dependent kinase 6 (Cdk6) as novel miR-21 targets in mesangial cells...
January 4, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28122882/effects-of-microrna-200b-on-the-development-of-diabetic-retinopathy-by-targeting-vegfa-gene
#11
En-Hui Li, Qin-Zhu Huang, Gao-Chun Li, Zhen-Yang Xiang, Xin Zhang
This study explored the effect of microRNA-200b (miR-200b) on the development of diabetic retinopathy (DR) by targeting VEGFA gene. The study populations consisted of 255 DR patients (case group) and 253 healthy people (control group), while the expressions of miR-200b and VEGFA mRNA were detected by quantitative real-time polymerase chain reaction (qRT-PCR). Bioinformatics software and dual-luciferase reporter assay were used to confirm VEGFA as a target gene of miR-200b. Also, a total of 70 Wistar male rats were selected and randomly assigned into blank, normal control (NC), miR-200b mimics, miR-200b inhibitors, miR-200b inhibitors + siVEGFA and siVEGFA groups (n = 10/group) respectively...
January 25, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28122423/microrna-biomarkers-in-neurodegenerative-diseases-and-emerging-nano-sensors-technology
#12
REVIEW
Pratik Shah, Seok Keun Cho, Peter Waaben Thulstrup, Morten Jannik Bjerrum, Phil Hyu Lee, Ju-Hee Kang, Yong-Joo Bhang, Seong Wook Yang
MicroRNAs (miRNAs) are essential small RNA molecules (20-24 nt) that negatively regulate the expression of target genes at the post-transcriptional level. Due to their roles in a variety of biological processes, the aberrant expression profiles of miRNAs have been identified as biomarkers for many diseases, such as cancer, diabetes, cardiovascular disease and neurodegenerative diseases. In order to precisely, rapidly and economically monitor the expression of miRNAs, many cutting-edge nanotechnologies have been developed...
January 2017: Journal of Movement Disorders
https://www.readbyqxmd.com/read/28122254/an-alpha-beta-of-pancreatic-islet-microribonucleotides
#13
REVIEW
Louise Torp Dalgaard, Lena Eliasson
MicroRNAs (miRNAs) are cellular, short, non-coding ribonucleotides acting as endogenous posttranscriptional repressors following incorporation in the RNA-induced silencing complex. Despite being chemically and mechanistically very similar, miRNAs exert a multitude of different cellular effects by acting on mRNA species, whose gene-products partake in a wide array of processes. Here, the aim was to review the knowledge of miRNA expression and action in the islet of Langerhans. We have focused on: 1) physiological consequences of islet or beta cell specific inhibition of miRNA processing, 2) mechanisms regulating processing of miRNAs in islet cells, 3) presence and function of miRNAs in alpha versus beta cells - the two main cell types of islets, and 4) miRNA mediators of beta cell decompensation...
January 22, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28112573/persistence-of-coxsackievirus-b4-in-pancreatic-ductal-like-cells-results-in-cellular-and-viral-changes
#14
E K Alidjinou, I Engelmann, J Bossu, C Villenet, M Figeac, M B Romond, F Sané, D Hober
Introduction Although known as cytolytic viruses, group B coxackieviruses (CVB) are able to establish a persistent infection in vitro and in vivo. Viral persistence has been reported as a key mechanism in the pathogenesis of CVB-associated chronic diseases such as type 1 diabetes (T1D). The impact of CVB4 persistence on human pancreas ductal-like cells was investigated. Methods A persistent CVB4 infection was established in ductal-like cells. PDX-1 expression, resistance to CVB4-induced lysis and CAR expression were evaluated...
January 23, 2017: Virulence
https://www.readbyqxmd.com/read/28108673/plasma-microrna-21-expression-an-indicator-for-the-severity-of-type-2-diabetes-with-diabetic-retinopathy
#15
Qi Jiang, Xue-Man Lv, Yi Yuan, Ling Wang
OBJECTIVE: To investigate the roles of plasma microRNA-21 (miR-21) in the pathogenic process of type 2 diabetes (T2D) with diabetic retinopathy (DR). METHODS: T2D patients included patients without DR (NDR group), patients with non-proliferative/background DR (BDR group) and patients with proliferative DR (PDR group). Healthy individuals served as control group. Fasting plasma glucose (FPG), glycosylated hemoglobin (HbA1c), triglycerides (TG), total cholesterol (TC), urine creatinine (Cr), fasting blood glucose (FBG), blood urea nitrogen (BUN), low-density cholesterol (LDL-C), fasting insulin (FINS) and plasma miR-21 expression were measured...
January 20, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28102847/curcumin-represses-mouse-3t3-l1-cell-adipogenic-differentiation-via-inhibiting-mir-17-5p-and-stimulating-the-wnt-signalling-pathway-effector-tcf7l2
#16
Lili Tian, Zhuolun Song, Weijuan Shao, William W Du, Lisa R Zhao, Kejing Zeng, Burton B Yang, Tianru Jin
Understanding mechanisms underlying adipogenic differentiation may lead to the discovery of novel therapeutic targets for obesity. Wnt signalling pathway activation leads to repressed adipogenic differentiation while certain microRNAs may regulate pre-adipocyte proliferation and differentiation. We show here that in mouse white adipose tissue, miR-17-5p level is elevated after high fat diet consumption. miR-17-5p upregulates adipogenic differentiation, as its over-expression increased while its inhibition repressed 3T3-L1 differentiation...
January 19, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28101643/polymorphisms-in-genes-encoding-mir-155-and-mir-146a-are-associated-with-protection-to-type-1-diabetes-mellitus
#17
Taís S Assmann, Guilherme C K Duarte, Letícia A Brondani, Pedro H O de Freitas, Égina M Martins, Luís H Canani, Daisy Crispim
AIMS: Type 1 diabetes mellitus (T1DM) is characterized by severe autoimmune destruction of pancreatic beta-cells. The triggering of autoimmunity against beta-cells is probably caused by a combination of environmental and genetic risk factors. Even though much is known about the genetic of T1DM, more information is needed to completely unravel this tangled disease. MicroRNAs (miRNAs) are a class of small noncoding RNAs molecules that negatively regulate gene expression by inducing target mRNA cleavage or by inhibiting protein translation...
January 19, 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/28097824/mechanisms-of-metabolic-memory-and-renal-hypoxia-as-a-therapeutic-target-in-diabetic-kidney-disease
#18
REVIEW
Yosuke Hirakawa, Tetsuhiro Tanaka, Masaomi Nangaku
Diabetic kidney disease (DKD) is a worldwide public health problem. The definition of DKD is being under discussion. Although the term DKD was originally defined as "kidney disease specific to diabetes", DKD frequently means chronic kidney disease (CKD) with diabetes mellitus and includes not only classical diabetic nephropathy, but also kidney dysfunction due to nephrosclerosis and other causes. Metabolic memory plays a crucial role in the progression of various complications of diabetes, including DKD. The mechanisms of metabolic memory in DKD are supposed to include advanced glycation end products, DNA methylation, histone modifications, and non-coding RNA including microRNA...
January 17, 2017: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/28088385/flavonoid-derivative-fla-cn-inhibited-adipocyte-differentiation-via-activating-ampk-and-up-regulating-microrna-27-in-3t3-l1-cells
#19
Chun-Chun Gan, Tian-Wen Ni, Yang Yu, Nan Qin, Ying Chen, Mei-Na Jin, Hong-Quan Duan
Fla-CN (3-O-[(E)-4-(4-cyanophenyl)-2-oxobut-3-en-1-yl] kaempferol) is a semi-synthesized flavonoid derivative of tiliroside which exhibited anti-diabetic effect in vivo. Our previous study revealed the role of Fla-CN in anti-obesity and anti-diabetes in vivo, but the underlying mechanism remained to be addressed. The present study aimed to investigate the mechanism of anti-adipogenesis in vitro. Fla-CN markedly inhibited intracellular lipid accumulation in a dose-dependent manner, and the inhibitory effect was mainly limited to the early stage of adipocyte differentiation in vitro...
January 12, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28086863/exercise-mediated-protection-of-diabetic-heart-through-modulation-of-microrna-mediated-molecular-pathways
#20
REVIEW
Jason Kar Sheng Lew, James T Pearson, Daryl O Schwenke, Rajesh Katare
Hyperglycaemia, hypertension, dyslipidemia and insulin resistance collectively impact on the myocardium of people with diabetes, triggering molecular, structural and myocardial abnormalities. These have been suggested to aggravate oxidative stress, systemic inflammation, myocardial lipotoxicity and impaired myocardial substrate utilization. As a consequence, this leads to the development of a spectrum of cardiovascular diseases, which may include but not limited to coronary endothelial dysfunction, and left ventricular remodelling and dysfunction...
January 13, 2017: Cardiovascular Diabetology
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