Process for increasing glycine levels in the brain and spinal cord

摘要

The level of glycine in the brain and in the spinal cord is regulated by administering a neutral amino acid composition to a human wherein increased or decreased brain and spinal cord levels of glycine is effected when the composition contains increased or decreased amounts of threonine or a precursor of L-threonine. The neutral amino acid composition can be administered alone or concomitantly with a drug which either has the undesirable side effect of suppressing glycine-mediated neurotransmission or whose therapeutic efficacy is enhanced by increasing glycinergic neurotransmission.