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microRNA, diabetes

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https://www.readbyqxmd.com/read/29346396/serum-mirna-levels-are-related-to-glucose-homeostasis-and-islet-autoantibodies-in-children-with-high-risk-for-type-1-diabetes
#1
Linda Åkerman, Rosaura Casas, Johnny Ludvigsson, Beatriz Tavira, Camilla Skoglund
Micro RNAs (miRNAs) are promising disease biomarkers due to their high stability. Their expression in serum is altered in type 1 diabetes, but whether deviations exist in individuals with high risk for type 1 diabetes remains unexplored. We therefore assessed serum miRNAs in high-risk individuals (n = 21) positive for multiple islet autoantibodies, age-matched healthy children (n = 17) and recent-onset type 1 diabetes patients (n = 8), using Serum/Plasma Focus microRNA PCR Panels from Exiqon. The miRNA levels in the high-risk group were similar to healthy controls, and no specific miRNA profile was identified for the high-risk group...
2018: PloS One
https://www.readbyqxmd.com/read/29344506/micrornas-in-renal-diseases-a-potential-novel-therapeutic-target
#2
Federica Petrillo, Anna Iervolino, Miriam Zacchia, Adelina Simeoni, Cristina Masella, Giovanna Capolongo, Alessandra Perna, Giovambattista Capasso, Francesco Trepiccione
Background: MicroRNAs (miRNAs) are a family of short noncoding RNAs that play important roles in posttranscriptional gene regulation. miRNAs inhibit target gene expression by blocking protein translation or by inducing mRNA degradation and therefore have the potential to modulate physiological and pathological processes. Summary: In the kidney, miRNAs play a role in the organogenesis and in the pathogenesis of several diseases, including renal carcinoma, diabetic nephropathy, cystogenesis, and glomerulopathies...
December 2017: Kidney Diseases
https://www.readbyqxmd.com/read/29341487/identification-of-stress-related-microrna-biomarkers-in-type-2-diabetes-a-systematic-review-and-meta-analysis
#3
Yingzhi Liang, Li Jiajianghui, Huanbo Xiao, Yan He, Ling Zhang, Yuxiang Yan
BACKGROUND: Many studies have investigated miRNAs in the detection of type 2 diabetes mellitus (T2DM). Here, the dysregulated direction of stress-related miRNAs that used as biomarkers of T2DM was summarized and analyzed. METHODS: PubMed, EMBASE, ISI web of science and three Chinese databases were searched for case-control miRNA profiling studies about T2DM. A meta-analysis under a random effect was performed. Subgroup analysis was conducted based on different tissues and species, respectively...
January 17, 2018: Journal of Diabetes
https://www.readbyqxmd.com/read/29334763/long-non-coding-rna-linc01619-regulates-mir-27a-foxo1-and-endoplasmic-reticulum-stress-mediated-podocyte-injury-in-diabetic-nephropathy
#4
Xiaoyan Bai, Jian Geng, Xiao Li, Jiao Wan, Jixing Liu, Zhan Mei Zhou, Xiaoting Liu
AIMS: Altered activities of long non-coding RNAs (lncRNAs) have been implicated in the regulation of microRNAs. MicroRNA-27a (miR-27a) upregulation has been shown to induce endoplasmic reticulum stress (ER stress) and podocyte injury in diabetic nephropathy (DN). Herein, we aim to interrogate the mutually regulated network of miR-27a with long intergenic non-coding RNA 1619 (LINC01619) and the target gene. RESULTS: LINC01619 downregulation was found in human DN renal biopsy tissues and contributed to proteinuria and diminished renal function...
January 15, 2018: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29332916/mir-135a-promotes-inflammatory-responses-of-vascular-smooth-muscle-cells-from-db-db-mice-via-downregulation-of-foxo1
#5
Xiaochun Lu, Dawei Yin, Bo Zhou, Tieling Li
It has been shown that microRNAs (miRNAs) greatly affect the functions of vascular smooth muscle cells (VSMC), but the effects of mRNAs under diabetic conditions remain unclear.Using a model of diabetic db/db mice, we studied the functions of microRNA-135a (miR-135a) during VSMC dysfunction.Compared to control WT mice, miR-135a expression in VSMC was significantly increased while the level of forkhead box O1 (FOXO1) protein decreased significantly. After transfecting miR-135a mimics into VSMC, the expression of FOXO1 was decreased, while cyclooxygenase-2 (COX-2) and monocyte chemoattractant protein-1 (MCP-1) expression levels were increased, thus promoting the interaction between monocytes and WT VSMC...
January 15, 2018: International Heart Journal
https://www.readbyqxmd.com/read/29328402/mir%C3%A2-203%C3%A2-3p-participates-in-the-suppression-of-diabetes%C3%A2-associated-osteogenesis-in-the-jaw-bone-through-targeting-smad1
#6
Yuying Tang, Leilei Zheng, Jie Zhou, Yang Chen, Lan Yang, Feng Deng, Yun Hu
Certain microRNAs (miRs) have important roles in the maintenance of bone development and metabolism, and a variety of miRs are known to be deregulated in diabetes. The present study investigated the role of miR‑203‑3p in the regulation of bone loss by assessing jaw bones of a rat model of type 2 diabetes. The results indicated that miR‑203‑3p inhibited osteogenesis in the jaws of diabetic rats and in rat bone marrow mesenchymal stem cells cultured in high‑glucose medium. A luciferase re-porter assay was used to verify the bioinformatics prediction that miR‑203‑3p targets the 3'‑untranslated region of Smad1, which is an important mediator of the bone morphogenetic protein (BMP)/Smad pathway...
January 9, 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29328400/microrna%C3%A2-146a-napdh-oxidase4-decreases-reactive-oxygen-species-generation-and-inflammation-in-a-diabetic-nephropathy-model
#7
Rong Jun Wan, Yue Hong Li
The present study investigated the role of microRNA (miR)‑146a in a diabetic nephropathy (DN) model, and its molecular mechanism. DN mice were given intraperitoneal injections of streptozotocin (55 mg/kg/day) for 5 consecutive days as an in vivo DN model. The HK‑2 human kidney cell line were exposed to 45% D‑glucose as an in vitro DN model. Firstly, it was demonstrated that miR‑146a expression was inhibited and NAPDH oxidase 4 (Nox4) was increased in DN mice. In HK‑2 cells, overexpression of miR‑146a inhibited Nox4 protein expression and decreased reactive oxygen species (ROS) generation, oxidative stress and inflammation, and suppressed vascular cell adhesion molecule‑1 (VCAM‑1) and intracellular adhesion molecule‑1 (ICAM‑1) protein expression...
January 9, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29324316/microrna-145-alleviates-high-glucose-induced-proliferation-and-migration-of-vascular-smooth-muscle-cells-through-targeting-rock1
#8
Mantian Chen, Yi Zhang, Wei Li, Jieying Yang
The excessive proliferation and migration of vascular smooth muscle cells (VSMCs) are important steps in atherosclerosis. The present study aimed to investigate whether the high glucose-induced changes of VSCMs are mediated by miR-145 and the potential molecular mechanism involved. We found that loss of miR-145 accompanied with increased proliferation and migration was observed in cultured human VSMCs exposed to high glucose. Exogenous overexpression of miR-145 effectively suppressed the high glucose-induced excessive proliferation and migration of VSMCs...
January 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29319168/hepatic-mir-125b-inhibits-insulin-signaling-pathway-by-targeting-pik3cd
#9
Xiliang Du, Xiaobing Li, Liang Chen, Min Zhan, Lin Lei, Wenwen Gao, Zhen Shi, Yuhao Dong, Zhe Wang, Xinwei Li, Guowen Liu
Insulin resistance is often characterized as the most critical factor contributing to the development of (T2D) type 2 diabetes. MicroRNAs (miRNAs) are endogenous non-coding short single-stranded RNAs that function as negative regulators in many physiological and pathological processes. The objective of this study was to evaluate the roles of miR-125b in the regulation of insulin sensitivity in hepatocytes. We found that hepatic miR-125b levels were significantly increased in the patients with type 2 diabetes, high fat diet (HFD) mice, ob/ob and db/db mice...
January 10, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29302057/diabetes-induces-the-activation-of-pro-ageing-mir-34a-in-the-heart-but-has-differential-effects-on-cardiomyocytes-and-cardiac-progenitor-cells
#10
Ingrid Fomison-Nurse, Eugene Eng Leng Saw, Sophie Gandhi, Pujika Emani Munasinghe, Isabelle Van Hout, Michael J A Williams, Ivor Galvin, Richard Bunton, Philip Davis, Vicky Cameron, Rajesh Katare
Increased apoptosis and premature cellular ageing of the diabetic heart underpin the development of diabetic heart disease. The molecular mechanisms underlying these pathologies are still unclear. Here we determined the role of pro-senescence microRNA (miR)-34a in accelerating the ageing of the diabetic heart. RT-PCR analysis showed a significant increase in the level of circulating miR-34a from early stages in asymptomatic type-2 diabetic individuals compared to non-diabetic controls. We also observed significant upregulation of miR-34a in the type-2 human diabetic heart suggesting circulating miR-34a may be cardiac in origin...
January 4, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29298863/dual-regulation-of-hmgb1-by-combined-jnk1-2-atf2-axis-with-mir-200-family-in-nonalcoholic-steatohepatitis-in-mice
#11
Xin Chen, Yan Ling, Yanping Wei, Jing Tang, Yibing Ren, Baohua Zhang, Feng Jiang, Hengyu Li, Ruoyu Wang, Wen Wen, Guishuai Lv, Mengchao Wu, Lei Chen, Liang Li, Hongyang Wang
In the context of diabetes, obesity, and metabolic syndrome, the inflammatory signaling has critical roles in the pathogenesis of nonalcoholic fatty liver disease (NAFLD), but the underlying mechanisms remain poorly delineated. Herein, early and persistently elevated, proinflammatory cytokine HMGB1 expression was detected in a high-fat diet (HFD)-induced NAFLD model in C57BL/6 mice. The expression and extracellular release of HMGB1 was rapidly and dramatically induced by saturated palmitic acid in vitro HFD-induced inflammatory response and liver function impairment were both mitigated after the inhibition of endogenous HMGB1 by neutralizing antibody in vivo The up-regulation of HMGB1 was thought to be modified by dual channels: in the transcriptional level, it was regulated by JNK1/JNK2-ATF2 axis; post-transcriptionally, it was regulated by the microRNA (miR)-200 family, especially miR-429...
January 3, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29295997/diabetes-impairs-wound-healing-by-dnmt1-dependent-dysregulation-of-hematopoietic-stem-cells-differentiation-towards-macrophages
#12
Jinglian Yan, Guodong Tie, Shouying Wang, Amanda Tutto, Natale DeMarco, Lyne Khair, Thomas G Fazzio, Louis M Messina
People with type 2 diabetes mellitus (T2DM) have a 25-fold higher risk of limb loss than non-diabetics due in large part to impaired wound healing. Here, we show that the impaired wound healing phenotype found in T2D mice is recapitulated in lethally irradiated wild type recipients, whose hematopoiesis is reconstituted with hematopoietic stem cells (HSCs) from T2D mice, indicating an HSC-autonomous mechanism. This impaired wound healing phenotype of T2D mice is due to a Nox-2-dependent increase in HSC oxidant stress that decreases microRNA let-7d-3p, which, in turn, directly upregulates Dnmt1, leading to the hypermethylation of Notch1, PU...
January 2, 2018: Nature Communications
https://www.readbyqxmd.com/read/29290993/microrna-34c-acts-as-a-bidirectional-switch-in-the-maturation-of-insulin-producing-cells-derived-from-mesenchymal-stem-cells
#13
Chunyu Bai, Yuhua Gao, Xiangyang Zhang, Wancai Yang, Weijun Guan
miRNAs regulate insulin secretion, pancreatic development, and beta-cell differentiation. However, their function in the differentiation of IPCs from MSCs is poorly understood. In this study, to screen for miRNAs and their targets that function during the formation of IPCs from MSCs, we examined the miRNA expression profiles of MSCs and IPCs using RNA-seq and qPCR to confirm the above results. We found that miR-34c exhibited transient upregulation at an early stage of the formation of IPCs derived from MSCs...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29286091/identifying-heterogeneous-subtypes-of-gastric-cancer-and-subtype%C3%A2-specific-subpaths-of-microrna%C3%A2-target-pathways
#14
Yuanhang Li, Weijun Bai, Xu Zhang
The present study aimed to classify gastric cancer (GC) into subtypes and to screen the subtype‑specific genes, their targeted microRNAs (miRNAs) and enriched pathways to explore the putative mechanism of each GC subtypes. The GSE13861 data set was downloaded from the Gene Expression Omnibus and used to screen differential expression genes (DEGs) in GC samples based on the detection of imbalanced differential signal algorithm. The specific genes in each subtype were identified with the cut‑off criterion of U>0...
December 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29285097/mir-34a-and-mir-125b-are-upregulated-in-peripheral-blood-mononuclear-cells-from-patients-with-type-2-diabetes-mellitus
#15
Yanxin Shen, Huiling Xu, Xiaoyuan Pan, Weijiang Wu, Hui Wang, Linlin Yan, Miaomiao Zhang, Xia Liu, Sheng Xia, Qixiang Shao
Type 2 diabetes mellitus (T2DM) is a leading cause of blindness, non-traumatic amputation and end-stage renal disease, as well as a major cardiovascular risk factor. To determine whether miR-125b and miR-34a serve an important role in the development of T2DM, the current study investigated the expression profile of two microRNAs (miR-34a and miR-125b) and their relative genes in peripheral blood mononuclear cells from 73 patients with T2DM and 52 healthy donors by reverse transcription-quantitative polymerase chain reaction In addition, the association between miR-34a, miR-125b and their relevant genes expression profile were analyzed with respect to the pathogenesis of T2DM...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29285014/microrna-503-contribute-to-pancreatic-beta-cell-dysfunction-by-targeting-the-mtor-pathway-in-gestational-diabetes-mellitus
#16
Ke Xu, Dezhi Bian, Lanxiang Hao, Fei Huang, Min Xu, Jie Qin, Yanmei Liu
Loss of pancreatic β cells is involved in pathogenesis of gestational diabetes mellitus (GDM). Recently, several studies have elucidated the connection between microRNAs (miRNAs) and diabetes mellitus (DM), but the role of miRNAs in GDM remains unclear. The aim of this study was to evaluate the potential functions of miRNAs in GDM and to investigate the underlying mechanisms of action. First, we explored the expression profile of miRNAs in placenta tissue from GDM patients using microarray. Validation analysis was performed in peripheral blood specimens using quantitative reverse transcription PCR (qRT-PCR)...
2017: EXCLI Journal
https://www.readbyqxmd.com/read/29279420/deregulated-profiles-of-urinary-micrornas-may-explain-podocyte-injury-and-proximal-tubule-dysfunction-in-normoalbuminuric-patients-with-type-2-diabetes-mellitus
#17
Oana Milas, Florica Gadalean, Adrian Vlad, Victor Dumitrascu, Cristina Gluhovschi, Gheorghe Gluhovschi, Silvia Velciov, Roxana Popescu, Flaviu Bob, Petru Matusz, Agneta-Maria Pusztai, Octavian M Cretu, Alina Secara, Anca Simulescu, Sorin Ursoniu, Daliborca Vlad, Ligia Petrica
MicroRNAs (miRNAs) are short non-coding RNA species that are important post-transcriptional regulators of gene expression. The aim of the study was to establish a potential explanation of podocyte damage and proximal tubule (PT) dysfunction induced by deregulated miRNAs expression in the course of type 2 diabetes mellitus (DM). A total of 68 patients with type 2 DM and 11 healthy subjects were enrolled in a cross-sectional study and assessed concerning urinary albumin:creatinine ratio (UACR), urinary N-acetyl-β-D-glucosamininidase (NAG), urinary kidney injury molecule-1, urinary nephrin, podocalyxin, synaptopodin, estimated glomerular filtration rate (eGFR), urinary miRNA21, miRNA124, and miRNA192...
December 25, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/29276985/upregulation-of-mir-221-and-222-in-response-to-increased-extracellular-signal-regulated-kinases-1-2-activity-exacerbates-neointimal-hyperplasia-in-diabetes-mellitus
#18
Daniel J Lightell, Stephanie C Moss, T Cooper Woods
BACKGROUND AND AIMS: Diabetes is associated with accelerated arterial intimal thickening that contributes to the increased cardiovascular disease seen in this population. In healthy arteries, intimal thickening is inhibited by elevated levels of the cyclin-dependent kinase inhibitor, p27Kip1, and intimal thickening is promoted by activation of the mammalian Target of Rapamycin to promote degradation of p27Kip1 protein. Recently, we reported that two microRNAs, miR-221 and -222, which promote intimal thickening via down-regulation of mRNA encoding p27Kip1, are elevated in the arteries of diabetic patients...
December 9, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29273517/mirna-delivery-for-skin-wound-healing
#19
Zhao Meng, Dezhong Zhou, Yongsheng Gao, Ming Zeng, Wenxin Wang
The wound healing has remained a worldwide challenge as one of significant public health problems. Pathological scars and chronic wounds caused by injury, aging or diabetes lead to impaired tissue repair and regeneration. Due to the unique biological wound environment, the wound healing is a highly complicated process, efficient and targeted treatments are still lacking. Hence, research-driven to discover more efficient therapeutics is a highly urgent demand. Recently, the research results have revealed that microRNA (miRNA) is a promising tool in therapeutic and diagnostic fields because miRNA is an essential regulator in cellular physiology and pathology...
December 19, 2017: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/29273315/staphylococcus-aureus-triggers-induction-of-mir-15b-5p-to-diminish-dna-repair-and-de-regulate-inflammatory-response-in-diabetic-foot-ulcers
#20
Horacio A Ramirez, Irena Pastar, Ivan Jozic, Olivera Stojadinovic, Rivka C Stone, Nkemcho Ojeh, Joel Gil, Stephen C Davis, Robert S Kirsner, Marjana Tomic-Canic
Diabetic foot ulcers (DFUs) are a debilitating complication of diabetes in which bacterial presence, including its frequent colonizer Staphylococcus aureus, contribute to inhibition of healing. MicroRNAs (miRs) play a role in healing and host response to bacterial pathogens. However, the mechanisms by which miR response to cutaneous S. aureus contributes to DFU pathophysiology are unknown. Herein we show S. aureus inhibits wound closure and induces miR-15b-5p in acute human and porcine wound models, and in chronic DFUs...
December 19, 2017: Journal of Investigative Dermatology
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