Wu J H, Jin G Z
Shanghaai Institute of Materia Medica, Chinese Academy of Sciences.
Sheng Li Xue Bao. 1995 Dec;47(6):601-4.
The effects of (-) SPD and (-) THP on the noradrenergic neurons in rat locus coeruleus were investigated by recording the in vivo spontaneous firing. It was found that (-) SPD could increase the firing frequency of the NE neurons via antagonistic action on alpha 2 autoreceptors in a dose-dependent manner, while alpha 2 receptor agonist clonidine exerted an inhibitory effect. (-) THP induced inhibitory firing of the neurons, however, irreversible.