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Acute Myocardial Infarction in Rats
Published on: February 16, 2011
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Long non-coding RNA H19 protects acute myocardial infarction through activating autophagy in mice
1Department of Cardiology, Liaocheng People's Hospital, Liaocheng, China. qz1878@126.com.
European Review for Medical and Pharmacological Sciences
|September 20, 2018
Summary
Long non-coding RNA H19 overexpression protects against acute myocardial infarction (AMI) in mice. This protection is achieved by activating autophagy, reducing infarct size, and improving cardiac function.
Area of Science:
- Cardiovascular Biology
- Molecular Medicine
- RNA Biology
Background:
- Acute myocardial infarction (AMI) is a leading cause of mortality worldwide.
- Long non-coding RNAs (lncRNAs) are emerging as critical regulators in cardiovascular diseases.
- The role of lncRNA H19 in AMI pathogenesis requires further elucidation.
Purpose of the Study:
- To investigate the therapeutic effect of lncRNA H19 in a mouse model of AMI.
- To explore the underlying molecular mechanisms, particularly the involvement of autophagy.
Main Methods:
- Acute myocardial infarction (AMI) was induced in C57BL/6 mice.
- Lentivirus expressing H19 (pcDNA-H19) was used for H19 overexpression.
- Cardiac function was assessed using echocardiography.
- Infarct size was determined by triphenyltetrazolium chloride staining.
- H19, LC3, Beclin-1, and ATG-7 expression levels were quantified via qRT-PCR and Western blot.
Main Results:
- H19 expression was significantly downregulated in infarcted myocardial tissue.
- Overexpression of H19 in AMI mice reduced infarct size and improved cardiac function.
- H19 upregulation correlated with increased autophagy markers (LC3-II/I ratio, Beclin-1, ATG-7).
Conclusions:
- Overexpression of H19 demonstrates a protective effect in acute myocardial infarction (AMI).
- H19 exerts its cardioprotective effects by activating the autophagy pathway.
- Targeting H19 may represent a novel therapeutic strategy for AMI treatment.
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