“Also, ACTH may play a role in the regulation of synthesis, release, uptake, and metabolism of a number of neurotransmitters, including dopamine, norepinephrine , serotonin, acetylcholine, and g-aminobutyric acid (GABA) as well as modulate binding at glutamatergic, serotinergic, muscarinic type 1, opiate, and dopaminergic receptors.”