Resveratrol Attenuates Aortic Dissection by Increasing Endothelial Barrier Function Through the SIRT1 Pathway

Area of Science:

• Cardiovascular Research
• Molecular Biology
• Pharmacology

Background:

• Aortic dissection (AD) is a life-threatening cardiovascular condition with significant global health implications.
• Current understanding of AD pathogenesis and effective treatments remains limited.
• Resveratrol (RSV), a natural polyphenol, exhibits known anti-inflammatory and cardiovascular benefits, but its specific role in AD is unexplored.

Purpose of the Study:

• To investigate the protective effects of Resveratrol (RSV) against β-aminopropionitrile-induced aortic dissection (AD) in a murine model.
• To elucidate the underlying molecular mechanisms by which RSV may prevent AD.
• To assess the impact of RSV on endothelial cell integrity and inflammatory responses in the context of AD.

Main Methods:

• Induction of AD in mice using β-aminopropionitrile (BAP) to mimic human disease pathogenesis.
• Administration of Resveratrol (RSV) to assess its preventative effects on AD.
• Analysis of sirtuin 1 (SIRT1) expression in endothelial cells.
• Evaluation of inflammatory cell recruitment and inflammatory markers.

Main Results:

• Resveratrol (RSV) administration significantly prevented the occurrence of aortic dissection (AD) in the mouse model.
• RSV treatment led to increased sirtuin 1 (SIRT1) expression within endothelial cells.
• RSV reduced inflammatory cell recruitment by endothelial cells and suppressed the overall inflammatory response.

Conclusions:

• Resveratrol (RSV) demonstrates a protective effect against β-aminopropionitrile-induced aortic dissection (AD) in mice.
• The protective mechanism involves upregulation of SIRT1, promoting endothelial cell structural reconstruction.
• RSV mitigates AD by inhibiting endothelial inflammation and inflammatory cell infiltration, suggesting therapeutic potential.