A, Representative Western blots (top left) based on lysate of aorta. Graphs show average protein expression calculated from densitometry of Western blots based on tissue from 6 or 8 animals in each group, except for ET-1, where quantitation was based on 5 animals in each group. B, Insulin (50 mU/g) or insulin diluent was injected into the vena cava during pentobarbital anesthesia. After 5 minutes, the aorta was isolated and flash frozen. Representative Western blots (top) based on lysate of aorta. Average expression (bottom) calculated from densitometry of Western blots based on tissue from 3 animals in each group (total of 6 control (c) and 6 haploinsufficient (Δ) mice, Insr flox/ flox Apoe−/− and Insr
flox/Δ
Apoe−/−, respectively).