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MiRNA obesity

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https://www.readbyqxmd.com/read/29649689/high-fat-diet-alters-pas-kinase-regulation-by-fasting-and-feeding-in-liver
#1
Ana Pérez-García, Pilar Dongil, Verónica Hurtado-Carneiro, Enrique Blázquez, Carmen Sanz, Elvira Álvarez
The prevalence of overweight and obesity in the population, along with their associated complications, is a major factor contributing to increased morbidity and mortality in developed countries. The liver is a vital organ for maintaining metabolic homeostasis, especially in the adjustment periods in fasting and feeding. Per-Arnt-Sim (PAS) kinase (PASK) controls glucose homeostasis and energy metabolism in response to nutritional status. PASK-deficient mice with a high-fat diet (HFD) resist the development of obesity and hepatic steatosis, with improved insulin sensitivity...
March 12, 2018: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29625129/a-negative-feedback-loop-between-microrna-378-and-nrf1-promotes-the-development-of-hepatosteatosis-in-mice-treated-with-a-high-fat-diet
#2
Tianpeng Zhang, Xiaoling Zhao, Clifford J Steer, Guiqin Yan, Guisheng Song
BACKGROUNDS: The incidence of nonalcoholic fatty liver disease (NAFLD) is rapidly increasing due to the prevalence of obesity. NAFLD is a major risk factor of hepatocellular carcinoma (HCC). Even with successful surgical removal, the presence of NAFLD is associated with an increased recurrence of HCC. Despite the extensive study of NAFLD, its underlying mechanism(s) remains essentially unknown and there are no FDA-approved drugs for its treatment. Alterations in microRNA (miR) expression have been observed in human fatty livers...
April 3, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29620215/integrated-analysis-of-the-gene-expression-profile-and-dna-methylation-profile-of-obese-patients-with-type-2-diabetes
#3
Juan Shen, Bin Zhu
In order to better understand the etiology of obese type 2 diabetes (T2D) at the molecular level, the present study investigated the gene expression and DNA methylation profiles associated with T2D via systemic analysis. Gene expression (GSE64998) and DNA methylation profiles (GSE65057) from liver tissues of healthy controls and obese patients with T2D were downloaded from the Gene Expression Omnibus database. Differentially‑expressed genes (DEGs) and differentially‑methylated genes (DMGs) were identified using the Limma package, and their overlapping genes were additionally determined...
March 28, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29615793/association-between-hypertension-and-circulating-vascular-related-micrornas
#4
Jamie G Hijmans, Kyle J Diehl, Tyler D Bammert, Philip J Kavlich, Grace M Lincenberg, Jared J Greiner, Brian L Stauffer, Christopher A DeSouza
microRNAs (miRNAs) have a key role in regulating inflammation, vascular health and in turn, cardiovascular disease. Specifically, altered circulating expression of miR-17, miR-21, miR-34a, miR-92a, miR-126, miR-145, miR-146a, and miR-150 has been linked with the pathogenesis and progression of cardiovascular disease. The aim of this study was to determine whether the circulating profile of these vascular-related miRNAs is disrupted with hypertension. Thirty sedentary, middle-aged adults were studied: 15 normotensive (10M/5F; age: 56 ± 1 year; BP: 113/71 ± 2/1 mmHg) and 15 hypertensive (10M/5F; 56 ± 2 year; 140/87 ± 2/2 mmHg)...
April 4, 2018: Journal of Human Hypertension
https://www.readbyqxmd.com/read/29605715/a-computational-biology-approach-of-a-genome-wide-screen-connected-mirnas-to-obesity-and-type-2-diabetes
#5
Pascal Gottmann, Meriem Ouni, Sophie Sausenthaler, Julian Roos, Laura Stirm, Markus Jähnert, Anne Kamitz, Nicole Hallahan, Wenke Jonas, Andreas Fritsche, Hans-Ulrich Häring, Harald Staiger, Matthias Blüher, Pamela Fischer-Posovszky, Heike Vogel, Annette Schürmann
OBJECTIVE: Obesity and type 2 diabetes (T2D) arise from the interplay between genetic, epigenetic, and environmental factors. The aim of this study was to combine bioinformatics and functional studies to identify miRNAs that contribute to obesity and T2D. METHODS: A computational framework (miR-QTL-Scan) was applied by combining QTL, miRNA prediction, and transcriptomics in order to enhance the power for the discovery of miRNAs as regulative elements. Expression of several miRNAs was analyzed in human adipose tissue and blood cells and miR-31 was manipulated in a human fat cell line...
March 15, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29560554/effects-of-exosomes-from-lps-activated-macrophages-on-adipocyte-gene-expression-differentiation-and-insulin-dependent-glucose-uptake
#6
Nicolás De Silva, Mirian Samblas, J Alfredo Martínez, Fermín I Milagro
Obesity is usually associated with low-grade inflammation, which determines the appearance of comorbidities like atherosclerosis and insulin resistance. Infiltrated macrophages in adipose tissue are partly responsible of this inflammatory condition. Numerous studies point to the existence of close intercommunication between macrophages and adipocytes and pay particular attention to the proinflammatory cytokines released by both cell types. However, it has been recently described that in both, circulation and tissue level, there are extracellular vesicles (including microvesicles and exosomes) containing miRNAs, mRNAs, and proteins that can influence the inflammatory response...
March 20, 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29534467/expanding-the-utilization-of-formalin-fixed-paraffin-embedded-archives-feasibility-of-mir-seq-for-disease-exploration-and-biomarker-development-from-biopsies-with-clear-cell-renal-cell-carcinoma
#7
Philipp Strauss, Hans-Peter Marti, Christian Beisland, Andreas Scherer, Vegard Lysne, Sabine Leh, Arnar Flatberg, Even Koch, Vidar Beisvag, Lea Landolt, Trude Skogstrand, Øystein Eikrem
Novel predictive tools for clear cell renal cell carcinoma (ccRCC) are urgently needed. MicroRNAs (miRNAs) have been increasingly investigated for their predictive value, and formalin-fixed paraffin-embedded biopsy archives may potentially be a valuable source of miRNA sequencing material, as they remain an underused resource. Core biopsies of both cancerous and adjacent normal tissues were obtained from patients ( n = 12) undergoing nephrectomy. After small RNA-seq, several analyses were performed, including classifier evaluation, obesity-related inquiries, survival analysis using publicly available datasets, comparisons to the current literature and ingenuity pathway analyses...
March 10, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29522441/mir-146b-inhibits-glucose-consumption-by-targeting-irs1-gene-in-porcine-primary-adipocytes
#8
Yan-Ling Zhu, Ting Chen, Jia-Li Xiong, Di Wu, Qian-Yun Xi, Jun-Yi Luo, Jia-Jie Sun, Yong-Liang Zhang
Adipose tissue plays an important role in energy metabolism. Adipose dysfunction is closely related to obesity and type II diabetes. Glucose uptake is the key step for fat synthesis in adipocyte. miRNAs have been proven to play a crucial role in adipocyte differentiation, adipogenesis and glucose homeostasis. In this paper, we firstly reported that miR-146b decreased glucose consumption by up-regulating miR-146b in a porcine primary adipocyte model, while the inhibitor of endogenous miR-146b rescued the reduction...
March 9, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29516496/primate-fetal-hepatic-responses-to-maternal-obesity-epigenetic-signalling-pathways-and-lipid-accumulation
#9
Sobha Puppala, Cun Li, Jeremy P Glenn, Romil Saxena, Samer Gawrieh, Amy Quinn, Jennifer Palarczyk, Edward J Dick, Peter W Nathanielsz, Laura A Cox
Maternal obesity (MO) increases offspring cardiometabolic disease risk. Altered fetal liver development in response to the challenge of MO has metabolic consequences underlying adverse offspring life-course health outcomes. Little is known about molecular pathways and potential epigenetic changes regulating primate fetal liver responses to MO. We hypothesized that MO would induce fetal baboon liver epigenetic changes resulting in dysregulation of key metabolic pathways that impact lipid metabolism. MO was induced prior to pregnancy by a high fat, high sucrose diet...
March 7, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29514516/differences-in-bmi-between-mexican-and-colombian-patients-receiving-antipsychotics-results-from-the-international-study-of-latinos-on-antipsychotics-isla
#10
Bernardo Ng, Alvaro Camacho, Katherine Parra, Ricardo de la Espriella, Victor Rico, Severiano Lozano, Mirna Troncoso, Ruby C Castilla-Puentes, Benjamin L Cook, Daniel E Jimenez
OBJECTIVE: The objective of this study is to examine the association of country of residence with body mass index (BMI) between Mexican and Colombian patients exposed to antipsychotics. We hypothesize that there will be a significant association between country of residence and BMI and that Mexican patients will have higher BMI than their Colombian counterparts. DESIGN: The International Study of Latinos on Antipsychotics (ISLA) is a multisite, international, cross sectional study of adult Latino patients exposed to antipsychotics in two Latin American Countries (i...
March 7, 2018: Ethnicity & Health
https://www.readbyqxmd.com/read/29511965/exercise-and-weight-loss-interventions-and-mirna-expression-in-women-with-breast-cancer
#11
Brian D Adams, Hannah Arem, Monica J Hubal, Brenda Cartmel, Fangyong Li, Maura Harrigan, Tara Sanft, Christopher J Cheng, Lajos Pusztai, Melinda L Irwin
PURPOSE: Obesity and weight gain are associated with comorbidities including a higher risk of tumor recurrence and cancer-related deaths among breast cancer (BC) survivors; however, the underlying mechanisms linking obesity and cancer are poorly understood. Given the lack of clinically validated BC biomarkers, obesity and weight-loss studies utilize serum biomarkers as the intermediary outcomes of tumor recurrence. Studies have indicated microRNAs (miRNA)s are reliable biomarkers for cancer...
March 6, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29507696/mir-758-3p-a-blood-based-biomarker-that-s-influence-on-the-expression-of-cerp-abca1-may-contribute-to-the-progression-of-obesity-to-metabolic-syndrome
#12
Sadhbh O'Neill, Mette Bohl Larsen, Søren Gregersen, Kjeld Hermansen, Lorraine O'Driscoll
Due to increasing prevalence of obesity, a simple method or methods for the diagnosis of metabolic syndrome are urgently required to reduce the risk of associated cardiovascular disease, diabetes and cancer. This study aimed to identify a miRNA biomarker that may distinguish metabolic syndrome from obesity and to investigate if such a miRNA may have functional relevance for metabolic syndrome. 52 adults with clinical obesity (n=26) or metabolic syndrome (n=26) were recruited. Plasma specimens were procured from all and were randomly designated to discovery and validation cohorts...
February 6, 2018: Oncotarget
https://www.readbyqxmd.com/read/29507687/an-integrative-transcriptomic-approach-to-identify-depot-differences-in-genes-and-micrornas-in-adipose-tissues-from-high-fat-fed-mice
#13
Nadeeja N Wijayatunga, Mandana Pahlavani, Nishan S Kalupahana, Kameswara Rao Kottapalli, Preethi H Gunaratne, Cristian Coarfa, Latha Ramalingam, Naima Moustaid-Moussa
Obesity contributes to metabolic disorders such as diabetes and cardiovascular disease. Characterization of differences between the main adipose tissue depots, white (WAT) [including subcutaneous (SAT) and visceral adipose tissue (VAT)] and brown adipose tissue (BAT) helps to identify their roles in obesity. Thus, we studied depot-specific differences in whole transcriptome and miRNA profiles of SAT, VAT and BAT from high fat diet (HFD/45% of calories from fat) fed mice using RNA sequencing and small RNA-Seq...
February 6, 2018: Oncotarget
https://www.readbyqxmd.com/read/29484304/role-of-micrornas-in-obesity-induced-metabolic-disorder-and-immune-response
#14
REVIEW
Hong Zhong, Minjuan Ma, Tingming Liang, Li Guo
In all living organisms, metabolic homeostasis and the immune system are the most fundamental requirements for survival. Recently, obesity has become a global public health issue, which is the cardinal risk factor for metabolic disorder. Many diseases emanating from obesity-induced metabolic dysfunction are responsible for the activated immune system, including innate and adaptive responses. Of note, inflammation is the manifest accountant signal. Deeply studied microRNAs (miRNAs) have participated in many pathways involved in metabolism and immune responses to protect cells from multiple harmful stimulants, and they play an important role in determining the progress through targeting different inflammatory pathways...
2018: Journal of Immunology Research
https://www.readbyqxmd.com/read/29479888/decreased-serum-level-of-mir-155-is-associated-with-obesity-and-its-related-metabolic-traits
#15
Roya Mahdavi, Samira Ghorbani, Behnam Alipoor, Ghodratollah Panahi, Hadi Khodabandehloo, Ensieh Nasli Esfahani, Farideh Razi, Reza Meshkani
BACKGROUND: Type 2 diabetes is the most common metabolic disease, affecting many of the adult population all around the world. In recent years much attention has been paid to the role of circulating miRNAs as novel biomarkers for various diseases. The aim of this study was to investigate the expression level of miR-155 in serum samples of diabetic and healthy subjects. METHODS: 42 healthy and 45 type 2 diabetic subjects participated in the study. Serum miR-155 level of the subjects was measured using real-time PCR...
January 1, 2018: Clinical Laboratory
https://www.readbyqxmd.com/read/29466739/genetic-ablation-of-mir-33-increases-food-intake-enhances-adipose-tissue-expansion-and-promotes-obesity-and-insulin-resistance
#16
Nathan L Price, Abhishek K Singh, Noemi Rotllan, Leigh Goedeke, Allison Wing, Alberto Canfrán-Duque, Alberto Diaz-Ruiz, Elisa Araldi, Ángel Baldán, Joao-Paulo Camporez, Yajaira Suárez, Matthew S Rodeheffer, Gerald I Shulman, Rafael de Cabo, Carlos Fernández-Hernando
While therapeutic modulation of miRNAs provides a promising approach for numerous diseases, the promiscuous nature of miRNAs raises concern over detrimental off-target effects. miR-33 has emerged as a likely target for treatment of cardiovascular diseases. However, the deleterious effects of long-term anti-miR-33 therapies and predisposition of miR-33-/- mice to obesity and metabolic dysfunction exemplify the possible pitfalls of miRNA-based therapies. Our work provides an in-depth characterization of miR-33-/- mice and explores the mechanisms by which loss of miR-33 promotes insulin resistance in key metabolic tissues...
February 20, 2018: Cell Reports
https://www.readbyqxmd.com/read/29410349/non-targeted-profiling-of-circulating-micrornas-in-women-with-polycystic-ovary-syndrome-pcos-effects-of-obesity-and-sex-hormones
#17
Mora Murri, María Insenser, Elena Fernández-Durán, José L San-Millán, Manuel Luque-Ramírez, Héctor F Escobar-Morreale
PURPOSE: Circulating micro-ribonucleic acids (miRNAs) are small noncoding RNA molecules that influence gene transcription. We conducted the present profiling study to characterize the expression of circulating miRNAs in lean and obese patients with polycystic ovary syndrome (PCOS), the most common endocrine and metabolic disorder in premenopausal women. BASIC PROCEDURES: We selected 11 control women, 12 patients with PCOS and 12 men so that they were similar in terms of body mass index...
February 1, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29409019/altered-expression-of-mir-181a-5p-and-mir-23a-3p-is-associated-with-obesity-and-tnf%C3%AE-induced-insulin-resistance
#18
Javier Lozano-Bartolomé, Gemma Llauradó, Manel Portero Otin, Antonio Altuna-Coy, Gemma Rojo-Martínez, Joan Vendrell, Rosa Jorba, Esther Rodríguez-Gallego, Matilde R Chacón
Context: The proinflammatory cytokine TNFα is a key player in insulin resistance (IR). While several miRNAs are believed to be involved in the development of adipose tissue (AT) IR, the role of miRNAs in the association between inflammation and IR is poorly understood. Objective: To investigate the expression profile of miR-181a-5p and miR-23a-3p in obesity and to study their role in TNFα-induced IR in adipocytes. Design: Two separate cohorts were employed...
February 1, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29402872/exercise-training-restores-the-cardiac-microrna-16-levels-preventing-microvascular-rarefaction-in-obese-zucker-rats
#19
Tiago Fernandes, Lilian Casaes, Úrsula Soci, Andre Silveira, João Gomes, Diego Barretti, Fernanda Roque, Edilamar Oliveira
OBJECTIVE: To evaluate the effects of aerobic exercise training (AET) on cardiac miRNA-16 levels and its target gene VEGF related to microvascular rarefaction in obese Zucker rats (OZR). METHODS: OZR (n = 11) and lean (L; n = 10) male rats were assigned into 4 groups: OZR, trained OZR (OZRT), L and trained L (LT). Swimming exercise training lasted 60 min, 1×/day/10 weeks, with 4% body weight workload. Cardiac angiogenesis was assessed by histological analysis (periodic acid-Schiff) by calculating the capillary/fiber ratio...
February 7, 2018: Obesity Facts
https://www.readbyqxmd.com/read/29393878/microrna-125a-5p-mediates-3t3-l1-preadipocyte-proliferation-and-differentiation
#20
Yan Xu, Jingjing Du, Peiwen Zhang, Xue Zhao, Qiang Li, Anan Jiang, Dongmei Jiang, Guoqing Tang, Yanzhi Jiang, Jinyong Wang, Xuewei Li, Shunhua Zhang, Li Zhu
Excessive accumulation of adipose tissue is a main cause of obesity or overweight, which is significantly involved in increasing the risk of diseases. Recently, numerous studies have proved that microRNAs (miRNAs) play important roles in adipogenesis by negatively regulating gene expression at posttranscriptional levels. In this study, we showed that miR-125a-5p was expressed at lower levels in the adipose tissues of high-fat diet (HFD)-fed mice than the normal chow (NCW)-fed mice. MiR-125a-5p expression were strongly up-regulated by nearly five-fold, when 3T3-L1 preadipocyte were induced and differentiated into mature adipocytes...
February 2, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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