Medical Physiology Commons^™

Hypercholesterolemia Accelerates Both The Initiation And Progression Of Angiotensin Ii-Induced Abdominal Aortic Aneurysms, Jing Liu, Hisashi Sawada, Deborah A. Howatt, Jessica J. Moorleghen, Olga A. Vsevolozhskaya, Alan Daugherty, Hong S. Lu

Pharmacology and Nutritional Sciences Faculty Publications

Objective: This study determined whether hypercholesterolemia would contribute to both the initiation and progression of angiotensin (Ang)II-induced abdominal aortic aneurysms (AAAs) in mice.

Methods and Results: To determine whether hypercholesterolemia accelerates the initiation of AAAs, male low-density lipoprotein (LDL) receptor -/- mice were either fed one week of Western diet prior to starting AngII infusion or initiated Western diet one week after starting AngII infusion. During the first week of AngII infusion, mice fed normal diet had less luminal expansion of the suprarenal aorta compared to those initiated Western diet after the first week of AngII infusion. The two groups …