I have seen that not always ApoE mice are capable of developing endothelial disfunction without a diet rich in lipids or cholesterol. Do you know how long it takes to induce an ED with an Occidental diet in ApoE mice?
I`ve read about surgical infliction of aortic intimal injury (using a baloon-tipped catheter) in rabbit models prior to atherosclerosis experiments but I dont think it would work about mice due to their small size. That`s the most commen way I think