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https://www.readbyqxmd.com/read/28796037/functional-prediction-of-mir-3144-5p-in-human-cardiac-myocytes-based-on-transcriptome-sequencing-and-bioinformatics
#1
Lei Ruan, Yi Yang, Yi Huang, Ling Ding, Cuntai Zhang, Xiaofen Wu
BACKGROUND: RAN guanine nucleotide release factor (RANGRF) encoding protein MOG1 plays an important role in cardiac arrhythmia, so we intended to investigate the regulatory miRNA of RANGRF and explore its potential regulatory mechanism in arrhythmogenesis. METHODS: Based on bioinformatic analysis, miR-3144-5p was predicted to be a regulatory miRNA of RANGRF, which were then validated through a dual-luciferase reporter plasmid assay. Subsequently, the expression level of miR-3144-5p in human cardiac myocytes (HCMs) was detected, followed by cell transfection with miR-3144-5p mimics...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28752208/micrornas-in-atrial-fibrillation-from-expression-signatures-to-functional-implications
#2
REVIEW
Nicoline W E van den Berg, Makiri Kawasaki, Wouter R Berger, Jolien Neefs, Eva Meulendijks, Anke J Tijsen, Joris R de Groot
Atrial fibrillation (AF) is the most common sustained arrhythmia and is associated with pronounced morbidity and mortality. Its prevalence, expected to further increase for the forthcoming years, and associated frequent hospitalizations turn AF into a major health problem. Structural and electrical atrial remodelling underlie the substrate for AF, but the exact mechanisms driving this remodelling remain incompletely understood. Recent studies have shown that microRNAs (miRNA), short non-coding RNAs that regulate gene expression, may be involved in the pathophysiology of AF...
July 28, 2017: Cardiovascular Drugs and Therapy
https://www.readbyqxmd.com/read/28731126/mir%C3%A2-132-in-atrial-fibrillation-directly-targets-connective-tissue-growth-factor
#3
Gang Qiao, Dongsheng Xia, Zhaoyun Cheng, Guobao Zhang
Atrial fibrillation (AF) is the most frequently occurring, persistent cardiac arrhythmia, and the hallmark of AF‑dependent structural remodeling is atrial fibrosis. Connective tissue growth factor (CTGF) is important in the process of fibrosis. The association between miRNA and CTGF in AF‑dependent fibrosis remains to be elucidated. The present study aimed to determine if microRNA (miR)‑132 was able to regulate CTGF with an anti‑fibrotic effect in AF. A total of ten dogs or patients were assigned to control (n=4) and AF groups (n=6)...
July 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28601026/the-use-of-biologics-in-the-management-of-cardiovascular-diseases
#4
REVIEW
David A Taylor
The use of biologic agents including monoclonal antibodies, recombinant proteins, non-coding RNAs (miRNAs), gene therapy and, especially, stem cell therapy have revolutionized the treatment of a variety of diseases. Most notably, success in treating cancers have been achieved using hematopoietic stem cell therapy. Use of these agents in the treatment of cardiovascular disease is still in its infancy but recent advances have identified several new biologic agents. Current clinical trials are evaluating the success of stem cell therapy and fibroblast therapy as well as agents that either mimic or inhibit non-coding RNAs (miRNAs) as possible treatments for a several cardiac pathologies including heart failure, myocardial infarction, arrhythmias, coronary artery disease and ischemic heart disease...
April 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28469787/mir-1231-exacerbates-arrhythmia-by-targeting-calciumchannel-gene-cacna2d2-in-myocardial-infarction
#5
Jiefang Zhang, Lili Wu, Zhengwei Li, Guosheng Fu
MicroRNAs (miRNAs) are noncoding single-stranded RNAs of ~22 nucleotides suppressing a wide range of gene expression by direct degradation or translational inhibition of their target mRNAs. Acute myocardial infarction (AMI), a common cardiovascular disease mainly induced by coronary artery occlusion, can lead to the development of heart failure. Several recent findings have indicated that miRNAs might play vital roles in AMI, and some miRNAs have even been proposed as potential candidates for intervening AMI...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28465975/review-in-translational-cardiology-micrornas-and-myocardial-fibrosis-in-aortic-valve-stenosis-a-deep-insight-on-left-ventricular-remodeling
#6
REVIEW
Fabiani Iacopo, Conte Lorenzo, Enrico Calogero, Passiatore Matteo, Pugliese Nicola Riccardo, Santini Veronica, Barletta Valentina, Liga Riccardo, Scatena Cristian, Mazzanti Chiara Maria, Di Bello Vitantonio
MicroRNAs (miRNAs) are a huge class of noncoding RNAs that regulate protein-encoding genes (degradation/inhibition of translation). miRNAs are nowadays recognized as regulators of biological processes underneath cardiovascular disorders including hypertrophy, ischemia, arrhythmias, and valvular disease. In particular, circulating miRNAs are promising biomarkers of pathology. This review gives an overview of studies in aortic valve stenosis (AS), exclusively considering myocardial remodeling processes. We searched through literature (till September 2016), all studies and reviews involving miRNAs and AS (myocardial compartment)...
October 2016: Journal of Cardiovascular Echography
https://www.readbyqxmd.com/read/28422282/analysis-of-circulating-mir-1-mir-23a-and-mir-26a-in-atrial-fibrillation-patients-undergoing-coronary-bypass-artery-grafting-surgery
#7
Andre Feldman, Dalmo Antonio Ribeiro Moreira, Carlos Gun, Hui-Tzu Lin Wang, Mario Hiroyuki Hirata, Juliana de Freitas Germano, Gabriela Guimarães Sousa Leite, Pedro Farsky
Atrial fibrillation (AF) is the most common arrhythmia after cardiac surgery. From a pathophysiological point of view, a myriad of factors such as trauma, atrial dilation, ischemia, mechanical myopericarditis, autonomic imbalance, loss of connexins, AF nest remodeling, inflammation, sutures, and dysfunction caused by postextracorporeal circulation can contribute to postoperative atrial fibrillation (POAF) resulting in a longer hospital stay and consequently higher cost. Recent studies showed that short fragments of RNA, called microRNA (miRNA), can contribute to the development of several cardiovascular diseases, including AF...
May 2017: Annals of Human Genetics
https://www.readbyqxmd.com/read/28349066/circulating-micrornas-as-potential-biomarkers-of-atrial-fibrillation
#8
REVIEW
Ananília Medeiros Gomes da Silva, Jéssica Nayara Góes de Araújo, Renata Caroline Costa de Freitas, Vivian Nogueira Silbiger
Atrial fibrillation (AF) is the most common supraventricular arrhythmia in the population. MicroRNAs (small endogenous noncoding RNAs) are attractive candidates as biomarkers for AF, especially considering that miRNAs are stable and are detected within easily accessible biofluids such as blood. In this review, we selected twelve studies (2012 to 2016) that were classified according to the sample type. We aimed to provide an overview of the role of circulating miRNAs in AF and to discuss the variability of the results, seeking to improve the perspective of the use of miRNAs as potential noninvasive biomarkers for this heart disease...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28263709/kchip2-is-a-core-transcriptional-regulator-of-cardiac-excitability
#9
Drew M Nassal, Xiaoping Wan, Haiyan Liu, Danielle Maleski, Angelina Ramirez-Navarro, Christine S Moravec, Eckhard Ficker, Kenneth R Laurita, Isabelle Deschênes
Arrhythmogenesis from aberrant electrical remodeling is a primary cause of death among patients with heart disease. Amongst a multitude of remodeling events, reduced expression of the ion channel subunit KChIP2 is consistently observed in numerous cardiac pathologies. However, it remains unknown if KChIP2 loss is merely a symptom or involved in disease development. Using rat and human derived cardiomyocytes, we identify a previously unobserved transcriptional capacity for cardiac KChIP2 critical in maintaining electrical stability...
March 6, 2017: ELife
https://www.readbyqxmd.com/read/28188930/microrna-135a-regulates-sodium-calcium-exchanger-gene-expression-and-cardiac-electrical-activity
#10
Eric Duong, Jiening Xiao, Xiao Yan Qi, Stanley Nattel
BACKGROUND: Complete atrioventricular block (CAVB) causes arrhythmogenic remodeling and increases the risk of torsades de pointes arrhythmias. MicroRNAs (miRNAs) are key regulators of gene expression that contribute to cardiac remodeling. OBJECTIVE: The purpose of this study was to assess miRNA changes after CAVB and identify novel candidates potentially involved in arrhythmogenic cardiac remodeling. METHODS: CAVB was induced in mice via His-bundle ablation...
May 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28123343/let-7a-is-an-antihypertrophic-regulator-in-the-heart-via-targeting-calmodulin
#11
Xin Zhou, Fei Sun, Shenjian Luo, Wei Zhao, Ti Yang, Guiye Zhang, Ming Gao, Renzhong Lu, You Shu, Wei Mu, Yanan Zhuang, Fengzhi Ding, Chaoqian Xu, Yanjie Lu
Background: MicroRNAs (miRNAs) have been emerged as important regulator in a multiple of cardiovascular disease, including arrhythmia, cardiac hypertrophy and fibrosis, and myocardial infarction. The aim of this study was to investigate whether miRNA let-7a has antihypertrophic effects in angiotensin II (AngII)-induced cardiac hypertrophy. Methods: Neonatal rat ventricular myocytes (NRVMs) were exposed to AngII for 36 h as a cellular model of hypertrophy; subcutaneous injection of AngII for 2 weeks was used to establish a mouse model of cardiac hypertrophy in vivo study...
2017: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/28081514/role-of-mirna-1-in-regulating-connexin-43-in-ischemia-reperfusion-heart-injury-a-rat-model
#12
Bo Bian, Xue-Fang Yu, Guo-Qin Wang, Tian-Ming Teng
MiRNA-1 may participate in regulating ischemia-reperfusion injury (IRI) by affecting the expression and distribution of connexin 43 (Cx43). The aim of this study is to investigate miR-1 expression and its potential role in regulating Cx43 during ischemic postconditioning (IPOST) in a rat model. Fifty-five Wistar male rats were randomly divided into five groups: N, IR, IPOST, agomir-1, and antagomir-1 group. The hearts were perfused with the Langendorff system. The reperfusion arrhythmia (RA) and myocardial infarct size were observed and recorded...
March 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/27987400/an-insertion-deletion-polymorphism-within-3-utr-of-ryr2-modulates-sudden-unexplained-death-risk-in-chinese-populations
#13
Shouyu Wang, Zhixiang Zhang, Ya Yang, Chaoqun Wang, Ruiyang Tao, Shuxiang Hu, Zhixia Yin, Qing Zhang, Lijuan Li, Yan He, Shaohua Zhu, Chengtao Li, Suhua Zhang, Jianhua Zhang, Lihui Sheng, Fangyu Wu, Bin Luo, Yuzhen Gao
Sudden unexplained death (SUD) constitutes a part of the overall sudden death that can not be underestimated. Over the last years, genetic testing on SUD has revealed that inherited channelopathies might play important roles in the pathophysiology of this disease. Ryanodine receptor type-2 (RYR2) is a kind of ion channel extensively distributed in the sarcoplasmic reticulum (SR) of myocardium. Studies on RYR2 have suggested that either dysfunction or abnormal expression of it could lead to arrhythmia, which may cause cardiac arrest...
December 9, 2016: Forensic Science International
https://www.readbyqxmd.com/read/27690014/new-treatment-strategies-for-alcohol-induced-heart-damage
#14
REVIEW
Joaquim Fernández-Solà, Ana Planavila Porta
High-dose alcohol misuse induces multiple noxious cardiac effects, including myocyte hypertrophy and necrosis, interstitial fibrosis, decreased ventricular contraction and ventricle enlargement. These effects produce diastolic and systolic ventricular dysfunction leading to congestive heart failure, arrhythmias and an increased death rate. There are multiple, dose-dependent, synchronic and synergistic mechanisms of alcohol-induced cardiac damage. Ethanol alters membrane permeability and composition, interferes with receptors and intracellular transients, induces oxidative, metabolic and energy damage, decreases protein synthesis, excitation-contraction coupling and increases cell apoptosis...
September 29, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27488468/oxidized-low-density-lipoprotein-ox-ldl-cholesterol-induces-the-expression-of-mirna-223-and-l-type-calcium-channel-protein-in-atrial-fibrillation
#15
Fengping He, Xin Xu, Shuguo Yuan, Liangqiu Tan, Lingjun Gao, Shaochun Ma, Shebin Zhang, Zhanzhong Ma, Wei Jiang, Fenglian Liu, Baofeng Chen, Beibei Zhang, Jungang Pang, Xiuyan Huang, Jiaqiang Weng
Atrial fibrillation (AF) is the most common sustained arrhythmia causing high morbidity and mortality. While changing of the cellular calcium homeostasis plays a critical role in AF, the L-type calcium channel α1c protein has suggested as an important regulator of reentrant spiral dynamics and is a major component of AF-related electrical remodeling. Our computational modeling predicted that miRNA-223 may regulate the CACNA1C gene which encodes the cardiac L-type calcium channel α1c subunit. We found that oxidized low-density lipoprotein (ox-LDL) cholesterol significantly up-regulates both the expression of miRNA-223 and L-type calcium channel protein...
August 4, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27422887/elevated-serum-microrna-483-5p-levels-may-predict-patients-at-risk-of-post-operative-atrial-fibrillation
#16
Leanne Harling, Jonathan Lambert, Hutan Ashrafian, Ara Darzi, Nigel J Gooderham, Thanos Athanasiou
OBJECTIVES: Post-operative atrial fibrillation (POAF) is the commonest post-operative cardiac arrhythmia, affecting ∼1 in 3 patients undergoing coronary artery bypass grafting (CABG). Although its aetiology is complex, atrial substrate changes may pre-dispose to its onset. This study aims to ascertain the atrial microRNA signature of POAF and determine the potential for circulating microRNA as a pre-operative biomarker for this arrhythmia. METHODS: Thirty-four patients undergoing non-emergent, on-pump CABG were prospectively recruited...
January 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/27420053/micrornas-in-valvular-heart-diseases-potential-role-as-markers-and-actors-of-valvular-and-cardiac-remodeling
#17
REVIEW
Cécile Oury, Laurence Servais, Nassim Bouznad, Alexandre Hego, Alain Nchimi, Patrizio Lancellotti
miRNAs are a class of over 5000 noncoding RNAs that regulate more than half of the protein-encoding genes by provoking their degradation or preventing their translation. miRNAs are key regulators of complex biological processes underlying several cardiovascular disorders, including left ventricular hypertrophy, ischemic heart disease, heart failure, hypertension and arrhythmias. Moreover, circulating miRNAs herald promise as biomarkers in acute myocardial infarction and heart failure. In this context, this review gives an overview of studies that suggest that miRNAs could also play a role in valvular heart diseases...
July 13, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27322747/mir-223-3p-as-a-novel-microrna-regulator-of-expression-of-voltage-gated-k-channel-kv4-2-in-acute-myocardial-infarction
#18
Xue Liu, Ying Zhang, Weijie Du, Haihai Liang, Hua He, Lu Zhang, Zhenwei Pan, Xuelian Li, Chaoqian Xu, Yuhong Zhou, Leimin Wang, Ming Qian, Tianyi Liu, Hongli Yin, Yanjie Lu, Baofeng Yang, Hongli Shan
BACKGROUND/AIMS: Acute myocardial infarction (AMI) is a devastating cardiovascular disease with a high rate of morbidity and mortality, partly due to enhanced arrhythmogenicity. MicroRNAs (miRNAs) have been shown to participate in the regulation of cardiac ion channels and the associated arrhythmias. The purpose of this study was to test our hypothesis that miR-223-3p contributes to the electrical disorders in AMI via modulating KCND2, the gene encoding voltage-gated channel Kv4.2 that carries transient outward K+ current Ito...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27306406/p38-mapk-mir-1-are-involved-in-the-protective-effect-of-egcg-in-high-glucose-induced-cx43-downregulation-in-neonatal-rat-cardiomyocytes
#19
Lu Yu, Hongmei Yu, Xiaoting Li, Chongying Jin, Yanbo Zhao, Shengjie Xu, Xia Sheng
The remodeling of cardiac gap junctions contributes to various arrhythmias in a diabetic heart. We previously reported that Epigallocatechin-3-gallate (EGCG) attenuated connexin43 (Cx43) protein downregulation induced by high glucose (HG) in neonatal rat cardiomyocytes, but Cx43 mRNA expression was not affected. It indicated the possible mechanisms of post-transcriptional regulation, which still remains unclear. As microRNAs (miRNAs) regulate gene expression widely at post-transcriptional level, we measured miR-1/206 in cardiomyocytes treated with HG and EGCG by quantitative RT-PCR and investigated their relationship with signal transduction pathways...
August 2016: Cell Biology International
https://www.readbyqxmd.com/read/27213338/microrna-19b-downregulates-gap-junction-protein-alpha1-and-synergizes-with-microrna-1-in-viral-myocarditis
#20
Junyi Lin, Aimin Xue, Liliang Li, Beixu Li, Yuhua Li, Yiwen Shen, Ning Sun, Ruizhen Chen, Hongfei Xu, Ziqin Zhao
Viral myocarditis (VMC) is a life-threatening disease that leads to heart failure or cardiac arrhythmia. A large number of researches have revealed that mircroRNAs (miRNAs) participate in the pathological processes of VMC. We previously reported that miR-1 repressed the expression of gap junction protein α1 (GJA1) in VMC. In this study, miR-19b was found to be significantly upregulated using the microarray analysis in a mouse model of VMC, and overexpression of miR-19b led to irregular beating pattern in human cardiomyocytes derived from the induced pluripotent stem cells (hiPSCs-CMs)...
May 18, 2016: International Journal of Molecular Sciences
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