[Research progress on miR-21 in heart diseases]

Area of Science:

• Cardiovascular Biology
• Molecular Cardiology
• Biomedical Research

Background:

• Cardiac diseases involve pathological processes like apoptosis, hypertrophy, fibrosis, and electrical remodeling.
• MicroRNA-21 (miR-21) emerges as a significant endogenous regulator in cardiovascular pathology.
• miR-21 impacts cardiomyocyte apoptosis, hypertension, cardiac hypertrophy, myocardial fibrosis, and atrial electrical remodeling.

Purpose of the Study:

• To review the current research on microRNA-21's function in heart diseases.
• To elucidate the underlying mechanisms of miR-21's action in cardiovascular conditions.
• To discuss the diagnostic and therapeutic potential of miR-21 in cardiology.

Main Methods:

• Literature review of studies investigating microRNA-21 in cardiac pathology.
• Analysis of research on miR-21's molecular targets and signaling pathways.
• Synthesis of findings related to miR-21's role in various heart diseases.

Main Results:

• miR-21 demonstrates multifaceted roles, inhibiting cardiomyocyte apoptosis and improving hypertension and cardiac hypertrophy.
• miR-21 also promotes myocardial fibrosis and atrial electrical remodeling, contributing to disease progression.
• Evidence suggests miR-21 is a critical player in the pathophysiology of diverse heart conditions.

Conclusions:

• MicroRNA-21 is a pivotal factor in the development and progression of heart diseases.
• Targeting miR-21 presents a promising avenue for novel diagnostic and therapeutic strategies in cardiology.
• Further research is warranted to fully harness miR-21's clinical potential in cardiovascular medicine.