AT2 receptors targeting cardiac protection post-myocardial infarction

Area of Science:

• Cardiovascular Research
• Pharmacology
• Regenerative Medicine

Background:

• The angiotensin AT2-receptor (AT2R) plays a role in tissue protection.
• Its potential in myocardial infarction (MI) recovery has been explored through various experimental models.

Purpose of the Study:

• To review the role of the AT2R in myocardial infarction.
• To emphasize recent findings using AT2R agonists for therapeutic potential.

Main Methods:

• Studies reviewed include AT2R deficiency/overexpression, AT1-receptor blockade, and direct AT2R agonist treatment.
• Experimental approaches aimed to detect AT2R-mediated effects post-MI.

Main Results:

• AT2R activation consistently improves cardiac function in the early phase post-MI, with sustained effects up to four months.
• AT2R activation attenuates left ventricular remodeling, thinning, and rupture post-MI.
• Combined AT1-receptor blockade/deficiency with AT2R activation reduces post-MI cardiac hypertrophy.

Conclusions:

• The AT2R demonstrates significant therapeutic potential in mitigating adverse outcomes following myocardial infarction.
• Targeting the AT2R, particularly with agonists, offers a promising strategy for cardiac protection and regeneration post-MI.