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MiRNA obesity

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https://www.readbyqxmd.com/read/29243809/obesity-induced-mitochondrial-dysfunction-in-porcine-adipose-tissue-derived-mesenchymal-stem-cells
#1
Yu Meng, Alfonso Eirin, Xiang-Yang Zhu, Hui Tang, Pritha Chanana, Amir Lerman, Andre J van Wijnen, Lilach O Lerman
BACKGROUND: Transplantation of autologous mesenchymal stem cells (MSCs) may be a viable option for treatment of several diseases. MSCs efficacy depends on adequate function of their mitochondria, which might be impaired in a noxious milieu. OBJECTIVES: We hypothesized that obesity compromises MSCs mitochondrial structure and function, possibly via micro-RNA (miRNA)-based mechanisms. METHODS: MSCs were collected from swine abdominal adipose tissue after 16 weeks of Lean or Obese diet (n = 7 each)...
December 15, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29233981/a-mir-327-fgf10-fgfr2-mediated-autocrine-signaling-mechanism-controls-white-fat-browning
#2
Carina Fischer, Takahiro Seki, Sharon Lim, Masaki Nakamura, Patrik Andersson, Yunlong Yang, Jennifer Honek, Yangang Wang, Yanyan Gao, Fang Chen, Nilesh J Samani, Jun Zhang, Masato Miyake, Seiichi Oyadomari, Akihiro Yasue, Xuri Li, Yun Zhang, Yizhi Liu, Yihai Cao
Understanding the molecular mechanisms regulating beige adipocyte formation may lead to the development of new therapies to combat obesity. Here, we report a miRNA-based autocrine regulatory pathway that controls differentiation of preadipocytes into beige adipocytes. We identify miR-327 as one of the most downregulated miRNAs targeting growth factors in the stromal-vascular fraction (SVF) under conditions that promote white adipose tissue (WAT) browning in mice. Gain- and loss-of-function experiments reveal that miR-327 targets FGF10 to prevent beige adipocyte differentiation...
December 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/29233588/changes-in-circulating-mirnas-in-healthy-overweight-and-obese-subjects-effect-of-diet-composition-and-weight-loss
#3
S Giardina, P Hernández-Alonso, A Díaz-López, A Salas-Huetos, J Salas-Salvadó, M Bulló
BACKGROUND: MicroRNAs (miRNAs) are small non-coding RNA molecules that can play an important role in several chronic metabolic conditions, including obesity. However, to date little is known about how they are regulated. Weight loss induced by surgical procedures has been effective at modulating specific circulating miRNAs, but the effect of energy-restricted diets with different macronutrient compositions on circulating miRNAs is not well understood. The objective of the present analysis was to explore the effect of three energy-restricted diets of different macronutrient composition and carbohydrate quality on plasma miRNA levels...
December 1, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29210999/adverse-intrauterine-environment-and-cardiac-mirna-expression
#4
REVIEW
Mitchell C Lock, Kimberley J Botting, Ross L Tellam, Doug Brooks, Janna L Morrison
Placental insufficiency, high altitude pregnancies, maternal obesity/diabetes, maternal undernutrition and stress can result in a poor setting for growth of the developing fetus. These adverse intrauterine environments result in physiological changes to the developing heart that impact how the heart will function in postnatal life. The intrauterine environment plays a key role in the complex interplay between genes and the epigenetic mechanisms that regulate their expression. In this review we describe how an adverse intrauterine environment can influence the expression of miRNAs (a sub-set of non-coding RNAs) and how these changes may impact heart development...
December 6, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29210640/fine-tuning-of-micrornas-in-type-2-diabetes-mellitus
#5
Juan A Rosado, Raquel Diez-Bello, Gines Maria Salido, Gines Maria Salido
Type 2 diabetes mellitus is a metabolic disease widely spread across industrialized countries. Sedentary lifestyle and unhealthy alimentary habits lead to obesity, boosting both glucose and fatty acid in the bloodstream and eventually, insulin resistance, pancreas inflammation and faulty insulin production or secretion, all of them very well-defined hallmarks of type 2 diabetes mellitus. miRNAs, are small sequences of non-coding RNA that may regulate several processes within the cells, fine-tuning protein expression, with an unexpected and subtle precision and in time-frames ranging from minutes to days...
December 5, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29193229/identification-of-micrornas-and-genes-associated-with-hyperandrogenism-in-the-follicular-fluid-of-women-with-polycystic-ovary-syndrome
#6
Yunping Xue, Juan Lv, Pengfei Xu, Lin Gu, Jian Cao, Lingling Xu, Kai Xue, Qian Li
BACKGROUND: Polycystic ovary syndrome (PCOS) is a common reproductive endocrine disease, which is characterized by hyperandrogenism (HA), chronic anovulation, polycystic ovaries, insulin resistance and obesity. At present, the mechanism by which PCOS/HA occurs has not been fully elucidated, thus, the mechanisms behind and interventions for HA in PCOS are current hot topics in research. MiRNAs have recently been shown to serve as diagnostic or prognostic biomarkers in patients with cancer...
November 28, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29191698/micrornas-361-5p-and-mir-574-5p-associate-with-human-adipose-morphology-and-regulate-ebf1-expression-in-white-adipose-tissue
#7
Yasmina Belarbi, Niklas Mejhert, Hui Gao, Peter Arner, Mikael Rydén, Agné Kulyté
Reduced adipose expression of the transcription factor Early B cell factor 1 (EBF1) is linked to white adipose tissue (WAT) hypertrophy. We aimed to identify microRNAs (miRNAs) associated with WAT hypertrophy and EBF1 regulation. We mapped WAT miRNA expression from 26 non-obese women discordant in WAT morphology and determined EBF1 activity in the non-obese and 30 obese women. Expression of 15 miRNAs was higher in hypertrophy and 10 were predicted to target EBF1. Binding of miR-365-5p/miR-574-5p were validated with 3'-UTR assay...
November 27, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29186452/gender-and-cardiovascular-disease-are-sex-biased-mirna-networks-a-driving-force-behind-heart-failure-with-preserved-ejection-fraction-in-women
#8
Barend W Florijn, Roel Bijkerk, Eric van der Veer, Anton Jan van Zonneveld
CVD is the primary cause of death among men and women worldwide. Nevertheless, our comprehension of how CVD progresses in women and elicits clinical outcomes is lacking, leading CVD to be under-diagnosed and under-treated in women. A clear example of this differential presentation of CVD pathophysiologies in females is the strikingly higher prevalence of heart failure with preserved ejection fraction (HFpEF). Women with a history of preeclampsia, or those that present co-morbidities such as obesity, hypertension and diabetes mellitus are at increased risk to develop HFpEF...
November 24, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/29182200/-epigenetics-of-polycystic-ovary-syndrome
#9
Francisca Concha C, Teresa Sir P, Sergio E Recabarren, Francisco Pérez B
Polycystic ovarian syndrome (PCOS) is an endocrine and metabolic dysfunction, highly prevalent in women in their reproductive years. Hyperandrogenism, oligo-ovulation, polycystic ovarian morphology are the main features of this syndrome. PCOS is a genetic disorder with a multifactorial etiology and has a strong link with environmental components. It is frequently associated with obesity and insulin resistance. Recently, epigenetic mechanisms have been involved in the pathogenesis of PCOS. Several studies showed that methylation in DNA and miRNAs is altered in women with PCOS in blood, serum, adipose tissue, granulose cells and theca...
July 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/29175307/extracellular-vesicles-in-obesity-and-diabetes-mellitus
#10
REVIEW
Fabián Pardo, Roberto Villalobos-Labra, Bastián Sobrevia, Fernando Toledo, Luis Sobrevia
Cell-to-cell communication happens via diverse mechanisms including the synthesis, release and transfer to target cells of extracellular vesicles (EVs). EVs include nanovesicles (i.e., exosomes) and microvesicles, including apoptotic bodies. The amount and cargo of released EVs, which consist of microRNAs (miRNAs), mRNA, proteins, DNA, among other molecules, are altered in obesity and diabetes mellitus. EVs from these diseases show with altered cargo including several miRNAs and the enrichment with molecules involved in inflammation, immune efficiency, and cell activation...
November 24, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/29170059/the-clinical-potential-of-adipogenesis-and-obesity-related-micrornas
#11
REVIEW
M Zaiou, H El Amri, A Bakillah
Obesity is a growing health problem commonly associated with numerous metabolic disorders including type 2 diabetes, hypertension, cardiovascular disease, and some forms of cancer. The burden of obesity and associated cardiometabolic diseases are believed to arise through complex interplay between genetics and epigenetics predisposition, nutrition, environment, and lifestyle. However, the molecular basis and the repertoire of obesity-affecting factors are still unknown. Emerging evidence is connecting microRNAs (miRNAs) dysregulation with adipogenesis and obesity...
November 20, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/29159216/data-on-the-decreased-expression-of-foxo1-by-mir-1271-in-hepg2-hepatocytes
#12
Won-Mo Yang, Kyung-Ho Min, Se-Whan Park, Wan Lee
Obesity and metabolic diseases are closely associated with insulin resistance. Obesity-induced miRNAs are also considered to be potential contributors to the development of insulin resistance and type 2 diabetes. Previously, the expression of miR-1271 was reported to be upregulated in the liver of diet-induced obese mice (Yang et al., 2016) [1]. In this data article, multiple in silico analysis predicted FOXO1 gene to be a direct target of miR-1271. Dual luciferase reporter gene analysis showed that miR-1271 suppressed FOXO1 expression by direct binding to 3'UTR...
December 2017: Data in Brief
https://www.readbyqxmd.com/read/29152131/microrna-130b-attenuates-dexamethasone-induced-increase-of-lipid-accumulation-in-porcine-preadipocytes-by-suppressing-ppar-%C3%AE-expression
#13
Shifeng Pan, Yixin Cui, Xuan Dong, Tangjie Zhang, Hua Xing
In this study, two experiments were conducted to determine the role of miR-130b in dexamethasone (DEX)-induced lipid accumulation. Porcine preadipocytes were treated with 10(-6) M DEX for 48 h to investigate effects of DEX in lipid accumulation. Next, in order to illustrate the regulatory role of miR-130b on lipid accumulation induced by DEX, miRNA scrambled control (miR-SC), miR-130b overexpression plasmid and miR-130b inhibitor were respectively transfected into porcine preadipocytes at 24 h before DEX treatment for 48 h (miR-SC-DEX, miR-130b-DEX and miR-130b-inhibitor-DEX)...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29141971/role-of-microrna-regulation-in-obesity-associated-breast-cancer-nutritional-perspectives
#14
REVIEW
Ravi Kasiappan, Dheeran Rajarajan
Breast cancer is the most common malignancy diagnosed in women, and the incidence of breast cancer is increasing every year. Obesity has been identified as one of the major risk factors for breast cancer progression. The mechanisms by which obesity contributes to breast cancer development is not yet understood; however, there are a few mechanisms counted as potential producers of breast cancer in obesity, including insulin resistance, chronic inflammation and inflammatory cytokines, adipokines, and sex hormones...
November 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/29113498/decreased-serum-microrna-21-level-is-associated-with-obesity-in-healthy-and-type-2-diabetic-subjects
#15
Samira Ghorbani, Roya Mahdavi, Behnam Alipoor, Ghodratollah Panahi, Ensieh Nasli Esfahani, Farideh Razi, Mohhammad Taghikhani, Reza Meshkani
BACKGROUND: Recently, much attention has been paid to the role of circulating microRNAs (miRNAs) as novel biomarkers for various diseases. The aim of this study was to investigate the level of a subset of miRNAs in serum samples of the diabetic and healthy subjects. METHODS: Forty two healthy and 45 T2D subjects participated in this study. Serum miR-21, miR-126, and miR-146a levels were measured using real-time PCR. RESULTS: There was no significant difference in the serum level of miR-21, miR-126, and miR-146a between the diabetic and non-diabetic groups...
November 7, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29107764/current-attempts-to-implement-microrna-based-diagnostics-and-therapy-in-cardiovascular-and-metabolic-disease-a-promising-future
#16
Punniyakoti V Thanikachalam, Srinivasan Ramamurthy, Zheng W Wong, Koo B Jin, Wong J Ying, Mohd F B Abdullah, Chin Y Haur, Chia C Hou, Tan J Yi, Neo W Ting, Tan B Sen, Khan W Fang, Prashant Kesharwani
MicroRNAs (miRNAs) are small, noncoding RNAs regulating gene expression at the post-translational level. miRNA-based therapeutic agents are important because of the functionality of miRNAs in regulating lipid and glucose metabolism and their role in the pathogenesis of metabolic disorders such as diabetes and obesity, where dysregulation leads to disease; they are also important in angiogenesis. miRNAs additionally serve as biomarkers in the diagnosis, prognosis and risk assessment of disease and in monitoring the response to treatment...
October 28, 2017: Drug Discovery Today
https://www.readbyqxmd.com/read/29106399/a-microrna-screen-reveals-that-elevated-hepatic-ectodysplasin-a-expression-contributes-to-obesity-induced-insulin-resistance-in-skeletal-muscle
#17
Motoharu Awazawa, Paula Gabel, Eva Tsaousidou, Hendrik Nolte, Marcus Krüger, Joel Schmitz, P Justus Ackermann, Claus Brandt, Janine Altmüller, Susanne Motameny, F Thomas Wunderlich, Jan-Wilhelm Kornfeld, Matthias Blüher, Jens C Brüning
Over 40% of microRNAs (miRNAs) are located in introns of protein-coding genes, and many of these intronic miRNAs are co-regulated with their host genes. In such cases of co-regulation, the products of host genes and their intronic miRNAs can cooperate to coordinately regulate biologically important pathways. Therefore, we screened intronic miRNAs dysregulated in the livers of mouse models of obesity to identify previously uncharacterized protein-coding host genes that may contribute to the pathogenesis of obesity-associated insulin resistance and type 2 diabetes mellitus...
November 6, 2017: Nature Medicine
https://www.readbyqxmd.com/read/29103239/elevated-levels-of-mir-122-in-serum-may-contribute-to-improved-endothelial-function-and-lower-oncologic-risk-following-bariatric-surgery
#18
Arnon Blum, Hila Yehuda, Nissim Geron, Ari Meerson
BACKGROUND: Weight loss surgery is the most effective treatment for obesity, and it reduces cardiovascular and cancer risk through poorly understood mechanisms. MicroRNAs (miRNAs) are short RNA molecules that regulate the stability and translation of many mRNAs. We hypothesized that levels of specific circulating miRNAs are altered following surgery and may contribute to lower cancer risk. OBJECTIVES: To investigate the change of miRNA following surgery. METHODS: All patients underwent gastric "sleeve operation"...
October 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29101298/loss-of-microrna-22-prevents-high-fat-diet-induced-dyslipidemia-and-increases-energy-expenditure-without-affecting-cardiac-hypertrophy
#19
Gabriela Placoná Diniz, Zhan-Peng Huang, Jianming Liu, Jinghai Chen, Jian Ding, Renata Inzinna Fonseca, Maria Luiza Barreto-Chaves, Jose Donato, Xiaoyun Hu, Da-Zhi Wang
Obesity is associated with development of diverse diseases, including cardiovascular diseases and dyslipidemia. MiRNA-22 (miR-22) is a critical regulator of cardiac function and targets genes involved in metabolic processes. Previously we generated miR-22 null mice and we showed that loss of miR-22 blunted cardiac hypertrophy induced by mechanohormornal stress. In this study, we examined the role of miR-22 in the cardiac and metabolic alterations promoted by high fat (HF) diet. We found that loss of miR-22 attenuated the gain of fat mass and prevented dyslipidemia induced by HF diet, although the body weight gain, or glucose intolerance and insulin resistance did not seem to be affected...
November 3, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/29077919/glucocorticoids-suppressing-the-browning-of-adipose-tissue-via-mir-19b-in-male-mice
#20
Yifan Lv, Jing Yu, Yunlu Sheng, Min Huang, Xiaocen Kong, Wenjuan Di, Juan Liu, Hong Zhou, Hui Liang, Guoxian Ding
Physiological levels of glucocorticoids are required for proper metabolic control, and excessive glucocorticoid action has been linked to a variety of pandemic metabolic diseases. microRNA (miRNA)-19b plays a critical role in the pathogenesis of glucocorticoid-induced metabolic diseases. This study sought to explore the potential of miRNA-based therapeutics targeting adipose tissue. Our results showed that overexpressed miR-19b in stromal vascular fraction cells derived from subcutaneous adipose tissue had the same effects as dexamethasone treatment on the inhibition of adipose browning and oxygen consumption rate...
October 24, 2017: Endocrinology
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