Neuroendocrine aspects of mood disorders are showing a definite shift
from Studies that attempt to assess the responsivity of monoamine rece
ptors, especially noradrenaline and 5-hydroxytryptamine, to studies th
at focus on the primary neuroendocrine stress system, namely, the hypo
thalamic-pituitary-adrenal axis. Recent research has helped to delinea
te the subtle changes that take place in this axis in depression, toge
ther with the disturbances that may result from such risk factors as m
aternal deprivation or sexual abuse.