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Related Concept Videos

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...
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...
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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Related Experiment Video

Updated: Jun 27, 2026

Scanning Electron Microscopy of Macerated Tissue to Visualize the Extracellular Matrix
10:21

Scanning Electron Microscopy of Macerated Tissue to Visualize the Extracellular Matrix

Published on: June 14, 2016

Do microRNAs regulate myocardial fibrosis?

Javier Díez1

  • 1Division of Cardiovascular Sciences, Center of Applied Medical Research, University Clinic, University of Navarra, Pamplona, Spain. jadimar@unav.es

Nature Clinical Practice. Cardiovascular Medicine
|December 3, 2008
PubMed
Summary
This summary is machine-generated.

MicroRNAs (miRNAs) play a role in cardiac fibrosis, a key factor in heart disease. Identifying specific miRNAs involved could lead to new diagnostic tools and treatments for fibrotic heart conditions.

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Tissue-specific miRNA Expression Profiling in Mouse Heart Sections Using In Situ Hybridization

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Related Experiment Videos

Last Updated: Jun 27, 2026

Scanning Electron Microscopy of Macerated Tissue to Visualize the Extracellular Matrix
10:21

Scanning Electron Microscopy of Macerated Tissue to Visualize the Extracellular Matrix

Published on: June 14, 2016

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

Tissue-specific miRNA Expression Profiling in Mouse Heart Sections Using In Situ Hybridization
08:22

Tissue-specific miRNA Expression Profiling in Mouse Heart Sections Using In Situ Hybridization

Published on: September 15, 2018

Area of Science:

  • Cardiovascular Research
  • Molecular Biology
  • Genetics

Background:

  • Myocardial fibrosis is a hallmark of cardiac remodeling in various heart diseases.
  • Fibrosis increases the risk of adverse cardiovascular events like ventricular dysfunction and arrhythmias.
  • The precise molecular drivers of cardiac fibrosis are not fully understood.

Purpose of the Study:

  • To investigate the role of microRNAs (miRNAs) in the development of myocardial fibrosis.
  • To differentiate between miRNAs directly causing fibrosis and those with secondary expression changes.
  • To identify specific miRNA profiles associated with cardiac fibrosis for potential therapeutic and diagnostic applications.

Main Methods:

  • Analysis of microRNA expression in fibrotic myocardial tissue.
  • Correlation of specific miRNA alterations with etiological factors like ischemia and mechanical overload.
  • Investigating the direct impact of identified miRNAs on fibrotic processes.

Main Results:

  • Preliminary studies suggest altered miRNA expression in myocardial fibrosis linked to ischemia or mechanical stress.
  • Further research is needed to pinpoint causative miRNAs versus those with secondary expression changes.
  • Characterizing specific miRNAs associated with fibrosis is crucial.

Conclusions:

  • MicroRNAs represent a potential target for understanding and treating cardiac fibrosis.
  • Identifying fibrosis-specific miRNAs could pave the way for novel diagnostic biomarkers.
  • Targeting miRNAs may offer innovative therapeutic strategies for fibrotic heart diseases.