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Related Concept Videos

Myocarditis I: Introduction01:21

Myocarditis I: Introduction

Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
MicroRNAs01:22

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...

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Related Experiment Video

Updated: May 15, 2026

Digital PCR for Quantifying Circulating MicroRNAs in Acute Myocardial Infarction and Cardiovascular Disease
04:41

Digital PCR for Quantifying Circulating MicroRNAs in Acute Myocardial Infarction and Cardiovascular Disease

Published on: July 3, 2018

MicroRNAs in myocardial infarction.

Jan Fiedler1, Thomas Thum

  • 1Institute of Molecular and Translational Therapeutic Strategies (IMTTS), Hannover Medical School, Hannover, Germany. fiedler.jan@mh-hannover.de

Arteriosclerosis, Thrombosis, and Vascular Biology
|January 18, 2013
PubMed
Summary

MicroRNAs (miRNAs) play a key role in regulating gene expression after myocardial infarction. This review explores miRNA functions, therapeutic strategies, and their use as biomarkers for cardiac ischemia.

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In Vivo Nanovector Delivery of a Heart-specific MicroRNA-sponge
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Related Experiment Videos

Last Updated: May 15, 2026

Digital PCR for Quantifying Circulating MicroRNAs in Acute Myocardial Infarction and Cardiovascular Disease
04:41

Digital PCR for Quantifying Circulating MicroRNAs in Acute Myocardial Infarction and Cardiovascular Disease

Published on: July 3, 2018

In Vivo Nanovector Delivery of a Heart-specific MicroRNA-sponge
09:53

In Vivo Nanovector Delivery of a Heart-specific MicroRNA-sponge

Published on: June 15, 2018

Area of Science:

  • Molecular Biology
  • Cardiovascular Biology
  • Genetics

Background:

  • Posttranscriptional gene regulation by microRNAs (miRNAs) is complex and not fully understood.
  • miRNAs influence a significant portion of the genome through base pairing with messenger RNAs (mRNAs).
  • Myocardial infarction (MI) involves altered gene expression, disrupted signaling pathways, and the involvement of specific miRNAs.

Purpose of the Study:

  • To review the current understanding of key miRNAs in myocardial infarction.
  • To discuss novel miRNA-based therapeutic strategies for cardiac ischemia.
  • To explore the potential of miRNAs as biomarkers for cardiac ischemia.

Main Methods:

  • Literature review of existing research on miRNAs and myocardial infarction.
  • Analysis of studies investigating miRNA function in cardiac post-MI remodeling.
  • Evaluation of emerging therapeutic and diagnostic applications of miRNAs.

Main Results:

  • Specific miRNAs are critically involved in the cellular and molecular responses to myocardial infarction.
  • miRNA modulation can impact cardiac function and maladaptive remodeling post-ischemia.
  • miRNAs show promise as both therapeutic targets and diagnostic biomarkers.

Conclusions:

  • miRNAs are crucial regulators in myocardial infarction, influencing gene expression and cardiac remodeling.
  • Targeting miRNAs offers potential therapeutic avenues for treating cardiac ischemia.
  • Further research into miRNAs can lead to improved diagnostic tools and treatments for cardiovascular diseases.