Menkes J H, Wetterberg L, Ross S B, Yuwiler A
Neurology. 1987 May;37(5):779-83. doi: 10.1212/wnl.37.5.779.
Day and nighttime melatonin and dopamine-beta-hydroxylase activity were measured in blood from 10 Jewish and 9 non-Jewish dystonics and from 22 nondystonic family members. Groups did not significantly differ on either of these measures. These results do not support a generalized abnormality of noradrenergic release in dystonia.