Increased elastic lamellar breaks in Lox+/C285F mice. (A), EVG staining of 6-month C57, and HBP Lox+/C285 aortas revealed largely intact but disorganized elastic lamellae. Enlarged insert in (A) demonstrates the presence of breaks in Lox+/C285F. (B–D), Quantification of the number of lamella (B), breaks (C), and wall thickness (D) in Lox+/+ and Lox+/C285F mice under both C57 and HBP backgrounds showed an increasingly disorganized and thick vascular wall, most obvious in the 6-month HBP Lox+/C285F (Lox effect p < 0.0001, age effect p < 0.05 and HBP effect <0.001, multivariable regression, see Supplemental Table S1. * p < 0.05; ** p < 0.01; **** p < 0.0001.