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Identification of a long non-coding RNA as a novel biomarker and potential therapeutic target for atrial fibrillation

ABSTRACT: We identified 177 lncRNAs and 153 mRNAs that were differentially expressed (≥ 2-fold change), indicating that many lncRNAs are significantly upregulated or downregulated in AF. Among these, NONHSAT040387 and NONHSAT098586 were the most up-regulated and downregulated lncRNAs, and were selected for validation via quantitative PCR. GO analysis and KEGG pathway were applied to exploring potential lncRNAs function, identifying several pathways were alerted in atrial fibrillation pathogenesis.

ORGANISM(S): Homo sapiens

PROVIDER: GSE64904 | GEO | 2016/01/01

SECONDARY ACCESSION(S): PRJNA272476

REPOSITORIES: GEO

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Identification of a long non-coding RNA as a novel biomarker and potential therapeutic target for atrial fibrillation

Project description:We identified 177 lncRNAs and 153 mRNAs that were differentially expressed (â?¥ 2-fold change), indicating that many lncRNAs are significantly upregulated or downregulated in AF. Among these, NONHSAT040387 and NONHSAT098586 were the most up-regulated and downregulated lncRNAs, and were selected for validation via quantitative PCR. GO analysis and KEGG pathway were applied to exploring potential lncRNAs function, identifying several pathways were alerted in atrial fibrillation pathogenesis. we investigated the expression patterns of lncRNAs and mRNAs from atrial fibrillation with Agilent Human lncRNA array V4.0 (4 Ã? 180 K), which include 78,243 human lncRNAs and 30,215 coding transcripts.

2016-07-03 | E-GEOD-64904 | biostudies-arrayexpress

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Genome-wide DNA methylation analysis in permanent atrial fibrillation

Project description:Atrial fibrillation (AF) is the most common sustained arrhythmia with increased risk of stroke and congestive heart failure. AF is a highly genetic heterogeneous disease, but a large proportion of AF cannot be explained by genetic variants only. Some risk factors of AF, tendentious heritable phenomenon, potentially reversible conditions and some subtypes without DNA sequence variation all indicate the participation of DNA methylation in the pathogenesis of AF. Bisulphite converted DNA from the 11 left atrium samples were hybridised to the Illumina Infinium 450k Human Methylation Beadchip GPL13534

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myocardial tissue from atrial fibrillation patients

Project description:Electrical and structural remodeling processes are contributors to the self-perpetuating nature of atrial fibrillation (AF). However, their correlation has not been clarified. In this study, human atrial tissues from the patients with rheumatic mitral valve disease in either sinus rhythm or persistent AF were analyzed using a combined transcriptomic and proteomic approach. An up-regulation in chloride intracellular channel (CLIC) 1, 4, 5 and a rise in type IV collagen were revealed. Combined with the results from immunohistochemistry and electron microscope analysis, the distribution of type IV collagen and effects of fibrosis on myocyte membrane indicated the possible interaction between CLIC and type IV collagen, confirmed by protein structure prediction and co-immunoprecipitation. These results indicate that CLICs play an important role in the development of atrial fibrillation and that CLICs and structural type IV collagen may interact on each other to promote the development of AF in rheumatic mitral valve disease.

2018-11-22 | PXD006911 | Pride

Integrated Analysis of Dysregulated lncRNA and mRNA Expression profiles of myocardial sleevesof pulmonary veins in atrial fibrillation

Project description:Atrial fibrillation (AF) is currently the most prevalent arrhythmia worldwide.Recent clinical data implicate the additional contribution of non-coding RNAs in the pathogenesis of AF，which include microRNAs(miRNAs), endogenous small interfering RNAs, PIWIinteracting RNAs, and lncRNA. Notably, a growing number of lncRNAs have been implicated in disease etiology, although an association with AF has not been reported. In the present study, we conducted an integrated analysis of dysregulated lncRNA and mRNA expression profiles in myocardial sleevesof pulmonary veins between the patients who develop AF and the patients who were in normal sinus rhythm, which was performed using a second generation lncRNA microarray，focusing specifically on the identification and characterization of lncRNAs and mRNA potentially involving in maintaining atrial fibrillation.

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Project description:Atrial fibrillation (AF) is the most frequent persistent arrhythmia, and many genes have been reported as a causal gene candidate for AF. However, most transcriptome analyses of AF have limited to the atrial samples and have not evaluated by multiple cardiac regions. In this study, we analyzed the expression levels of protein-coding and long noncoding RNAs (lncRNAs) in six different cardiac regions by RNA-seq. Surprisingly, the most changed region in gene expression by the presence of AF was the pulmonary vein (PV), not the atria. Upon analysis of these significant genes, the ion channel-related gene set was significantly enriched. In addition, cancer-related lncRNAs was up-regulated in PV in AF. A Co-expression network analysis could detect the functional gene clusters. In particular, the functional coupling between the lncRNA FOXCUT and transcription factor FOXC1 are known to be involved in process of the epithelial-mesenchymal transition in cancer tissues. Thus, they may also play an aggravating role in the pathogenesis of AF. In the least, this study suggests that (1) RNA alteration is most intense in PVs and (2) post-acquired gene regulation, such as the FOXCUT-FOXC1 axis, may contribute to the progression of AF.

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Project description:This study will report the incidence of atrial fibrillation after elective colorectal cancer resection in the over 65 age group. This will be used to validate a risk model for the development of post-operative atrial fibrillation. Eligible patients will undergo electrocardiogram based screening for atrial fibrillation, as well as brain natriuretic peptide tests prior to surgery. They will undergo 24 hour holter monitor prior to surgery, and at 30 and 90 days following surgery. The primary outcome will be occurrence of atrial fibrillation within 90 days of surgery. Secondary outcomes include quality of life change, use of hospital services for atrial fibrillation, and complications of atrial fibrillation. This will be used to validate the pre-existing model for prediction of atrial fibrillation.

| 2312263 | ecrin-mdr-crc

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