Task: Answer Verification
Input (English): Question: Is the clinical antidepressant effect of exogenous agmatine reversed by parachlorophenylalanine : a pilot study?
Answer: The antidepressant effect of exogenous agmatine was documented in a small number of MDD subjects, and was not reversed/modified by PCPA confirming findings in animals that therapeutic response is not mediated by serotonergic mechanisms. A NAMDA (N-methyl-D-aspartate) receptor antagonist, agmatine's recognized function in brain as inhibitory modulator of excitatory glutamatergic transmission suggests a pivotal role for brain glutamate, contributing to the ripening glutamatergic basis of depression, and a rational basis for future antidepressant pharmacotherapy.
Output (English): no