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Updated: Feb 7, 2026
05:14
A Calcium Phosphate-Induced Mouse Abdominal Aortic Aneurysm Model
Published on: November 18, 2022
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Elastin stabilization for treatment of abdominal aortic aneurysms
Jason C Isenburg1, Dan T Simionescu, Barry C Starcher
1Department of Bioengineering, Clemson University, Clemson, SC 29634, USA.
Circulation
|March 21, 2007
Summary
Pentagalloyl glucose (PGG) stabilizes arterial elastin, preventing abdominal aortic aneurysm (AAA) development in a rat model. This elastin stabilization therapy shows promise for treating AAA disease.
Area of Science:
- Vascular biology
- Biomaterials science
- Pharmacology
Background:
- Arterial elastin integrity is crucial for preventing abdominal aortic aneurysm (AAA).
- Pentagalloyl glucose (PGG) is an elastin-binding polyphenol with potential therapeutic applications.
Purpose of the Study:
- To investigate the in vivo efficacy of PGG in stabilizing aortic elastin and preventing AAA development.
- To evaluate PGG's safety and mechanism of action in a preclinical AAA model.
Main Methods:
- In vitro assays assessed PGG's cytotoxicity, elastin stability, and binding affinity.
- In vivo studies utilized a rat model of CaCl2-induced AAA, with periadventitial PGG delivery.
- Aortic diameter, elastin integrity, and pathological markers were monitored in PGG-treated versus control aortas.
Main Results:
- PGG demonstrated non-cytotoxic levels and specific binding to arterial elastin.
- A single periadventitial PGG administration inhibited elastin degeneration and attenuated aneurysmal expansion in rats.
- PGG treatment hindered AAA development without affecting inflammation, calcification, or metalloproteinase activity.
Conclusions:
- Periadventitial PGG administration effectively hinders AAA development in a clinically relevant animal model.
- Stabilizing aortic elastin with PGG presents a promising therapeutic strategy for AAA.
- PGG preserves elastic lamellae integrity against proteinase-induced damage, offering a novel approach to AAA treatment.
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