Popis: |
Genetic and environmental contributions to urinary excretion rates of norepinephrine (UNEV) and epinephrine (UEV) and their association with blood pressure (BP) were investigated in 91 African American (mean age, 17.3 +/- 2.6 years) and 101 European American (mean age, 18.7 +/- 3.4 years) mono- and di-zygotic twins. Genetic modeling was performed using Mx software. UNEV (1.9 +/- 1.3 mu g h(-1)) and UEV (0.2 +/- 0.2 mu g h(-1)) were highly correlated (r = 0.81, P |