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https://www.readbyqxmd.com/read/29344661/plasma-levels-of-microrna-21-126-and-423-5p-alter-during-clinical-improvement-and-are-associated-with-the-prognosis-of-acute-heart-failure
#1
Stéfanie Ingrid Dos Reis Schneider, Daiane Silvello, Nidiane Carla Martinelli, Arthur Garbin, Andréia Biolo, Nadine Clausell, Michael Andrades, Kátia Gonçalves Dos Santos, Luís Eduardo Rohde
MicroRNAs are associated with myocardial damage and heart failure (HF). The present study investigated whether the plasma levels of microRNA (miR)‑21, ‑126 and ‑423‑5p alter according to the (de)compensated state of patients with HF and are associated with all‑cause mortality. In 48 patients with HF admitted to the emergency room for an episode of acute decompensation, blood samples were collected to measure miR and B‑type natriuretic peptide levels within 24 h of hospital admission, at the time of hospital discharge, and a number of weeks post‑discharge (chronic stable compensated state)...
January 15, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29341487/identification-of-stress-related-microrna-biomarkers-in-type-2-diabetes-a-systematic-review-and-meta-analysis
#2
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/29341478/translational-systems-pharmacology-based-predictive-assessment-of-drug-induced-cardiomyopathy
#3
Dimitris E Messinis, Ioannis N Melas, Junguk Hur, Navya Varshney, Leonidas G Alexopoulos, Jane P F Bai
Drug-induced cardiomyopathy contributes to drug attrition. We compared two pipelines of predictive modeling: (1) applying elastic net (EN) to differentially expressed genes (DEGs) of drugs; (2) applying integer linear programming (ILP) to construct each drug's signaling pathway starting from its targets to downstream proteins, to transcription factors, and to its DEGs in human cardiomyocytes, and then subjecting the genes/proteins in the drugs' signaling networks to EN regression. We classified 31 drugs with availability of DEGs into 13 toxic and 18 nontoxic drugs based on a clinical cardiomyopathy incidence cutoff of 0...
January 17, 2018: CPT: Pharmacometrics & Systems Pharmacology
https://www.readbyqxmd.com/read/29340119/mef2-signaling-and-human-diseases
#4
REVIEW
Xiao Chen, Bing Gao, Murugavel Ponnusamy, Zhijuan Lin, Jia Liu
The members of myocyte Enhancer Factor 2 (MEF2) protein family was previously believed to function in the development of heart and muscle. Recent reports indicate that they are also closely associated with development and progression of many human diseases. Although their role in cancer biology is well established, the molecular mechanisms underlying their action is yet largely unknown. MEF2 family is closely associated with various signaling pathways, including Ca2+ signaling, MAP kinase signaling, Wnt signaling, PI3K/Akt signaling, etc...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29335596/circulating-microrna-signature-for-the-diagnosis-of-childhood-dilated-cardiomyopathy
#5
Meng Jiao, Hong-Zhao You, Xin-Ying Yang, Hui Yuan, Yu-Lin Li, Wen-Xian Liu, Mei Jin, Jie Du
Circulating miRNAs are proposed as a biomarker of heart disease. This study evaluated whether circulating miRNAs could be used as a biomarker for childhood dilated cardiomyopathy (CDCM). A total of 28 participants were enrolled in a discovery set, including patients with CDCM (n = 16) and healthy children (n = 12). The cardiac function of patients with CDCM was characterized by echocardiography and serum miRNA profiles of all participants were assessed by miRNA sequencing. After miRNA profiling, we quantitatively confirmed 148 regulated miRNAs in patients with CDCM compared with healthy subjects, and none were downregulated...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29329959/mir-21-suppression-prevents-cardiac-alterations-induced-by-d-galactose-and-doxorubicin
#6
Yihua Bei, Xiaoting Wu, Dragos Cretoiu, Jing Shi, Qiulian Zhou, Shenghui Lin, Hui Wang, Yan Cheng, Haifeng Zhang, Junjie Xiao, Xinli Li
d-galactose (d-gal)-induced cardiac alterations and Doxorubicin (Dox)-induced cardiomyocyte senescence are commonly used models to study cardiac aging. Accumulating evidence has suggested that microRNAs (miRNAs, miRs) are critically involved in the regulation of cellular and organismal aging and age-related diseases. However, little has been revealed about the roles of miRNAs in cardiac alterations induced by d-gal and Dox. In this study, we used miRNA arrays to investigate the dysregulated miRNAs in heart samples from 15month-old versus 2month-old male C57BL/6 mice and further validated them in d-gal-induced pseudo-aging mouse model and Dox-induced cardiomyocyte senescence in vitro model...
January 9, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29328381/overexpressing-microrna-150-attenuates-hypoxia-induced-human-cardiomyocyte-cell-apoptosis-by-targeting-glucose-regulated-protein-94
#7
Jian-Lin Ma, Wen-Ling Guo, Xue-Mei Chen
MicroRNA (miR)-150 has been demonstrated to protect the heart from ischemic injury. However, the protective effect of miR‑150 in hypoxia‑injured cardiomyocytes remains unclear. The present study aimed to investigate the target gene of miR‑150 and the underlying molecular mechanisms of miR‑150 in hypoxia‑induced cardiomyocyte apoptosis. Using the hypoxia model of human cardiomyocytes (HCMs) in vitro, it was demonstrated that miR‑150 was markedly inhibited in HCMs after hypoxia treatment. Overexpressing miR‑150 significantly decreased hypoxia‑induced HCM death and apoptosis...
January 5, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29324314/down-regulation-of-mir-133a-b-in-patients-with-myocardial-infarction-correlates-with-the-presence-of-ventricular-fibrillation
#8
Emanuela Boštjančič, Tanisa Brandner, Nina Zidar, Damjan Glavač, Dušan Štajer
MicroRNAs (miRNAs) are important regulators of physiologic and pathologic conditions of the heart. Animal models of heart diseases have shown that miRNAs may contribute to the development of arrhythmias. However, little is known about the expression of muscle- and cardiac-specific miRNAs in patients with myocardial infarction (MI) who have developed ventricular fibrillation (VF). Our study included 47 patients who had died from myocardial infarction (MI), 23 with clinically proven VF and 24 without VF. Autopsy samples of infarcted tissue and remote myocardium were available (n = 94)...
January 8, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29321799/independent-and-combined-effects-of-environmental-factors-and-mir-126-mir-143-and-mir-145-on-the-risk-of-coronary-heart-disease
#9
Da-Cen Lin, Jia-Bing Lin, Zhou Chen, Rong Chen, Chun-Yu Wan, Shao-Wei Lin, Qi-Shuang Ruan, Huang-Yuan Li, Si-Ying Wu
Objective: To evaluate the effects of environmental factors and microRNAs (miRNAs) (miR-126, miR-143, and miR-145) on the risk of coronary heart disease (CHD). Methods: A frequency-matched case-control study (450 patients, 450 controls) was conducted from April 2014 to December 2016 in Fuzhou City, China. Environmental factors were investigated using a self-administered questionnaire, and the expression levels of miR-126, miR-143, and miR-145 were determined by quantitative real-time Polymerase Chain Reaction (PCR) in peripheral blood mononuclear cells...
November 2017: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/29314582/transcoronary-concentration-gradients-of-circulating-micrornas-in-heart-failure
#10
Salvatore De Rosa, Francesca Eposito, Cristina Carella, Antonio Strangio, Giuseppe Ammirati, Jolanda Sabatino, Fabio Giovanni Abbate, Claudio Iaconetti, Vincenzo Liguori, Valerio Pergola, Alberto Polimeni, Silvio Coletta, Clarice Gareri, Bruno Trimarco, Giuseppe Stabile, Antonio Curcio, Ciro Indolfi, Antonio Rapacciuolo
AIMS: Circulating levels of microRNAs (miRNAs) are emergent promising biomarkers for cardiovascular disease. Altered expression of miRNAs has been related to heart failure (HF) and cardiac remodelling. We measured the concentration gradients across the coronary circulation to assess their usefulness to diagnose HF of different aetiologies. METHODS AND RESULTS: Circulating miRNAs were measured in plasma samples simultaneously obtained from the aorta and the coronary venous sinus in patients with non-ischaemic HF (NICM-HF, n = 23) ischaemic HF (ICM-HF, n = 41), and in control patients (n = 11)...
January 4, 2018: European Journal of Heart Failure
https://www.readbyqxmd.com/read/29304479/microrna-140-5p-aggravates-doxorubicin-induced-cardiotoxicity-by-promoting-myocardial-oxidative-stress-via-targeting-nrf2-and-sirt2
#11
Lisha Zhao, Yan Qi, Lina Xu, Xufeng Tao, Xu Han, Lianhong Yin, Jinyong Peng
Clinical application of doxorubicin (DOX), an anthracycline antibiotic with potent anti- tumor effects, is limited because of its cardiotoxicity. However, its pathogenesis is still not entirely understood. The aim of this paper was to explore the mechanisms and new drug targets to treat DOX-induced cardiotoxicity. The in vitro model on H9C2 cells and the in vivo models on rats and mice were developed. The results showed that DOX markedly decreased H9C2 cell viability, increased the levels of CK, LDH, caused histopathological and ECG changes in rats and mice, and triggered myocardial oxidative damage via adjusting the levels of intracellular ROS, MDA, SOD, GSH and GSH-Px...
December 29, 2017: Redox Biology
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
#12
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/29296264/relative-expression-of-pbmc-microrna-133a-analysis-in-patients-receiving-warfarin-after-mechanical-heart-valve-replacement
#13
Hamid Kabiri Rad, Mahta Mazaheri, Ali Dehghani Firozabadi
Background: MicroRNAs (miRNAs) are implicated in various biological processes including anticoagulation. However, the modulation of miRNA by pharmacological intervention such as warfarin treatment in patients receiving warfarin has not been disclosed yet. The aim of this study work was to assess the effect of warfarin drug on expression level of mir-133a-3p in patients with mechanical heart valve replacement. Methods: In this research, the expression level of miRNA-133a-3p was analyzed in Peripheral Blood Mononuclear Cells (PBMCs) from mechanical valve replacement patients who had received warfarin for at least 3 months continuously...
January 2018: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/29286111/mir-31a-5p-protects-myocardial-cells-against-apoptosis-by-targeting-tp53
#14
Meng-Jie Yan, Zhi-Sen Tian, Zhi-Hui Zhao, Ping Yang
The pathogenesis and progression of heart failure (HF) involves multiple mechanisms, including the increased activity of the renin-angiotensin-aldosterone system, apoptosis and differential expression of microRNAs (miRNAs/miRs). Our previous study revealed an increase in miR‑31a‑5p levels in the failing hearts of a rat HF model. In the present study, whether and how miR‑31a‑5p mediates angiotensin II (AngII)‑induced apoptosis in the cardiac H9C2 cell line, was investigated using molecular biological approaches, including reverse transcription followed by quantitative polymerase chain reaction, western blotting, RNA arrays, and mutagenesis...
December 27, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29281806/stem-cell-inspired-secretome-rich-injectable-hydrogel-to-repair-injured-cardiac-tissue
#15
Renae Waters, Perwez Alam, Settimio Pacelli, Aparna R Chakravarti, Rafeeq P H Ahmed, Arghya Paul
The objective of this study was to develop an injectable and biocompatible hydrogel that can deliver a cocktail of therapeutic biomolecules (secretome) secreted by human adipose-derived stem cells (hASCs) to the peri-infarct myocardium. Gelatin and Laponite® were combined to formulate a shear-thinning, nanocomposite hydrogel (nSi Gel) as an injectable carrier of secretome (nSi Gel+). The growth factor composition and the pro-angiogenic activity of the secretome were tested in vitro by evaluating the proliferation, migration and tube formation of human umbilical endothelial cells...
December 24, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29281614/potential-contribution-of-erythrocyte-microrna-to-secondary-erythrocytosis-and-thrombocytopenia-in-congenital-heart-disease
#16
Nobuhiro Mukai, Yoshinobu Nakayama, Satoshi Murakami, Toshihito Tanahashi, Daniel I Sessler, Sachiyo Ishii, Satoru Ogawa, Natsuko Tokuhira, Toshiki Mizobe, Teiji Sawa, Yasufumi Nakajima
BACKGROUND: Children with cyanotic heart disease develop secondary erythrocytosis and thrombocytopenia via unknown mechanisms. Mature erythrocyte microRNAs may reflect clinical pathologies and cell differentiation processes pre-enucleation. This study evaluated erythrocyte microRNAs in children with cyanotic heart disease. METHODS: Erythrocyte microRNAs from children with cyanotic and acyanotic heart disease and without cardiac disease were quantified with Ion PGM System (n=10 per group)...
December 27, 2017: Pediatric Research
https://www.readbyqxmd.com/read/29276436/serum-microrna-27b-as-a-screening-biomarker-for-left-ventricular-hypertrophy
#17
Yan Wang, Shuyan Chen, Yanhong Gao, Song Zhang
MicroRNA-27b (miR-27b) is frequently upregulated in pressure-overloaded hypertrophic hearts. The clinical implications of aberrant circulating miR-27b in the diagnosis and management of left ventricular hypertrophy warrant study. We investigated whether serum miR-27b is a biomarker for left ventricular hypertrophy (LVH). We used stem-loop reverse-transcription quantitative polymerase chain reaction techniques to analyze serum miR-27b levels in 200 hypertensive patients with LVH, 100 hypertensive patients without LVH, and 100 healthy volunteers...
December 2017: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/29273502/mir-25-tough-decoy-enhances-cardiac-function-in-heart-failure
#18
Dongtak Jeong, Jimeen Yoo, Philyoung Lee, Sacha V Kepreotis, Ahyoung Lee, Christine Wahlquist, Brian D Brown, Changwon Kho, Mark Mercola, Roger J Hajjar
MicroRNAs are promising therapeutic targets, because their inhibition has the potential to normalize gene expression in diseased states. Recently, our group found that miR-25 is a key SERCA2a regulating microRNA, and we showed that multiple injections of antagomirs against miR-25 enhance cardiac contractility and function through SERCA2a restoration in a murine heart failure model. However, for clinical application, a more stable suppressor of miR-25 would be desirable. Tough Decoy (TuD) inhibitors are emerging as a highly effective method for microRNA inhibition due to their resistance to endonucleolytic degradation, high miRNA binding affinity, and efficient delivery...
November 26, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29259712/pathophysiology-and-therapeutic-potential-of-cardiac-fibrosis
#19
REVIEW
Hironori Hara, Norifumi Takeda, Issei Komuro
Inflammatory and fibrotic responses to myocardial damage are essential for cardiac repair; however, these responses often result in extensive fibrotic remodeling with impaired systolic function. Recent reports have suggested that such acute phase responses provide a favorable environment for endogenous cardiac regeneration, which is mainly driven by the division of pre-existing cardiomyocytes (CMs). Existing CMs in mammals can re-acquire proliferative activity after substantial cardiac damage, and elements other than CMs in the physiological and/or pathological environment, such as hypoxia, angiogenesis, and the polarity of infiltrating macrophages, have been reported to regulate replication...
2017: Inflammation and Regeneration
https://www.readbyqxmd.com/read/29258606/inflammation-associated-microrna-changes-in-circulating-exosomes-of-heart-failure-patients
#20
Faheemullah Beg, Ruizhong Wang, Zeb Saeed, Srikant Devaraj, Kamalesh Masoor, Harikrishna Nakshatri
OBJECTIVE: MiR-486 and miR-146a are cardiomyocyte-enriched microRNAs that control cell survival and self-regulation of inflammation. These microRNAs are released into circulation and are detected in plasma or in circulating exosomes. Little is known whether heart failure affects their release into circulation, which this study investigated. RESULTS: Total and exosome-specific microRNAs in plasma of 40 heart failure patients and 20 controls were prepared using the miRVana Kit...
December 19, 2017: BMC Research Notes
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