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Diagnostic value of circulating miR-146b-5p and miR-222-5p in patients with acute myocardial infarction

ABSTRACT: In this study we aim to evaluate the diagnostic value of miRNAs for in the detection of acute myocardial infarction (AMI). We used microRNA microarray to screen differentially expressed microRNAs (miRNAs) in rat myocardial infarcted tissues compared with healthy control tissues. Then the expression of these miRNAs was further verified by quantitative real-time polymerase chain reaction (RT-PCR) in rat myocardial infarcted tissues and plasma. Finally, the diagnostic value of these circulating miRNAs was explored in 44 patients with AMI, 53 with coronary heart disease (CHD) and 56 healthy controls.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE239822 | GEO | 2024/08/01

REPOSITORIES: GEO

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Diagnostic value of circulating miR-146b-5p and miR-222-5p in patients with acute myocardial infarction

Project description:Diagnostic value of circulating miR-146b-5p and miR-222-5p in patients with acute myocardial infarction

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Expression alteration of plasma exosomal circular RNAs in OSA patients with acute myocardial infarction

Project description:This study demonstrated that there were a number of dysregulated circRNAs in exosomes from OSA with AMI patients, which might be effectively served as a promising diagnostic biomarker and therapeutic targets. Objectives: Circular RNAs (circRNAs) are recently identified as a class of non-coding RNAs that participate in the incidence of acute myocardial infarction(AMI)

2022-02-23 | GSE197137 | GEO

Altered expression of microRNAs in the myocardium of rats with acute myocardial infarction

Project description:MicroRNAs are important cellular components and their dysfunctions are associated with various disease. Acute myocardial infarction (AMI) is one of the most serious cardiovascular diseases. Although several miRNAs have been reported to be associated with AMI, more novel miRNAs are needed to be investigated to ascertain if they are associated with AMI. SD rats (180-200g) was divided into sham-control group and two days group after AMI, seven days group after AMI, fourteen days group after AMI, each group has six individual animals total RNA was taken from the border-zone myocardium , low molecular weight RNA was seperate and labeled , and then hybridized to capitalbio V2 biochip representing about 924 microRNA . three chip were test in each group, and the procedure was repeated twice.

2010-04-22 | E-GEOD-19695 | biostudies-arrayexpress

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| S-EPMC8815033 | biostudies-literature

miR-146b-5p promotes duck Tembusu virus replication by targeting RPS14.

Project description:Duck Tembusu virus (DTMUV), belonging to the Flaviviridae family, is a major virus that affects duck health in China. MicroRNAs (miRNAs) play an important role in viral replication. However, little is known about the function of miRNAs during DTMUV infection. Here, the host miR-146b-5p was found to regulate DTMUV replication. When DTMUV infected duck embryo fibroblasts (DEFs), the expression levels of miR-146b-5p increased significantly over time. Moreover, the viral RNA copies, E protein expression levels and virus titers were all upregulated when miR-146b-5p was overexpressed in DEFs. The opposite results were also observed upon knockdown of miR-146b-5p in DEFs. To explore the mechanism by which miR-146b-5p promoted DTMUV replication, mass spectrometry, and RNA pull-down assays were employed. Ribosomal protein S14 (RPS14), a component of 40S ribosomal proteins, was identified to interact with miR-146b-5p. In addition, the relative mRNA expression levels of RPS14 gene were negatively modulated by miR-146b-5p. Subsequently, it was found that overexpression of RPS14 could decrease the replication of DTMUV, and the reverse results were also detected by knockdown of RPS14. In conclusion, this study revealed that miR-146b-5p promoted DTMUV replication by targeting RPS14, which provides a new mechanism by which DTMUV evades host defenses and a new direction for further antiviral strategies development.

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