Osteoprotegerin Prevents Development of Abdominal Aortic Aneurysms

PloS One
Batmunkh BumdelgerMasao Yoshizumi

Abstract

Abdominal aortic aneurysms (AAAs), which commonly occur among elderly individuals, are accompanied by a risk of rupture and subsequent high mortality. Establishment of medical therapies for the prevention of AAAs requires further understanding of the molecular pathogenesis of this condition. This report details the possible involvement of Osteoprotegerin (OPG) in the prevention of AAAs through inhibition of Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL). In CaCl2-induced AAA models, both internal and external diameters were significantly increased with destruction of elastic fibers in the media in Opg knockout (KO) mice, as compared to wild-type mice. Moreover, up-regulation of TRAIL expression was observed in the media by immunohistochemical analyses. Using a culture system, both the TRAIL-induced expression of matrix metalloproteinase-9 in smooth muscle cells (SMCs) and the chemoattractive effect of TRAIL on SMCs were inhibited by OPG. These data suggest that Opg may play a preventive role in the development of AAA through its antagonistic effect on Trail.

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Citations

Jan 19, 2019·Circulation. Genomic and Precision Medicine·Ellie PaigeZiad Mallat
Dec 31, 2019·The Journal of International Medical Research·Yihai LiuTingting Hu
May 12, 2018·Molecular Medicine Reports·Emina VorkapicDick Wågsäter
Apr 4, 2021·Journal of Clinical Medicine·Katarzyna KakarekoTomasz Hryszko

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