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Aortic aneurysms in Loeys-Dietz syndrome — a tale of two pathways?
Frank Davis, … , Debra L. Rateri, Alan Daugherty
Frank Davis, … , Debra L. Rateri, Alan Daugherty
Published December 20, 2013
Citation Information: J Clin Invest. 2014;124(1):79-81. https://doi.org/10.1172/JCI73906.
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Commentary

Aortic aneurysms in Loeys-Dietz syndrome — a tale of two pathways?

Abstract

Loeys-Dietz syndrome (LDS) is a connective tissue disorder that is characterized by skeletal abnormalities, craniofacial malformations, and a high predisposition for aortic aneurysm. In this issue of the JCI, Gallo et al. developed transgenic mouse strains harboring missense mutations in the genes encoding type I or II TGF-β receptors. These mice exhibited several LDS-associated phenotypes. Despite being functionally defective, the mutated receptors enhanced TGF-β signaling in vivo, inferred by detection of increased levels of phosphorylated Smad2. Aortic aneurysms in these LDS mice were ablated by treatment with the Ang II type 1 (AT1) receptor antagonist losartan. The results from this study will foster further interest into the potential therapeutic implications of AT1 receptor antagonists.

Authors

Frank Davis, Debra L. Rateri, Alan Daugherty

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