Effect of chronic Pin1 inhibition on vascular endothelial NO synthase (eNOS) function and
systolic blood pressure in mice. Control mice were treated daily for 2 weeks with either
juglone (1 mg/kg, IP) or vehicle. A, Representative Western blot showing
aortic eNOS Ser116 phosphorylation. B, Aortic NO production as measured by
Nω-nitro-l-arginine
(LNNA)–sensitive 4-amino-5-methylamino-2′,7′-difluorofluorescein
(DAF-FM) fluorescence. C, Aortic relaxation responses to acetylcholine after
contraction with phenylephrine in the absence and presence of NO synthase (NOS) inhibition
(LNNA). Relaxation to 100% represents a full return to a passive tension of 0.75
g. D, Systolic blood pressure at baseline, day 7, and day 14 of juglone or
vehicle treatment. Results are expressed as mean±SEM (n>5 mice for each
group). *P<0.05 vs control,
+P<0.05 vs day 7 blood pressure.