investigation of the effects of injecting monoamines ( noradrenaline , dopamine and serotonin ) into the third ventricle of the brain on the lh-rh content in the synaptosomal fraction of the mediobasal hypothalamus in intact and castrated male rats has demonstrated that all the three monoamines are involved in the regulation of synthesis and secretion of lh-rh and that their effects on lh-rh-producing neurons are steroid-dependent .
C0020663
hypothalamus
C0023610
lh-rh