Fig 1.

Blood pressure measurement showed that the NOS pathway is a major determinant of T4-induced hemodynamic changes in mice. Representative bar graphs show (A) systolic, (B) diastolic, and (C) mean arterial blood pressure and (D) heart rate in mice. T4, thyroxin; L-NIO, N5-(1-iminoethyl)-l-ornithine dihydrochloride; BPM, beats per minute. Control, n=13; T4, n=12; allopurinol, n=11; apocynin, n=12; L-NIO, n=10; MitoTEMPO, n=12. *Significant change compared with T4 group (one-way ANOVA followed by Dunnett multiple comparisons post hoc test, comparing all groups to T4).