The interaction between m-tyrosine and reserpine was investigated. m-Tyrosine, when given in repeated doses shortly before and after the injection of reserpine, caused a partial but significant protection against the dopamine-depleting action of reserpine in the brain. Pretreatment with m-tyrosine also partially protected against the marked reductions in synaptosomal [3H]dopamine uptake and in release of [3H]dopamine from striatal slices prepared from rats pretreated with reserpine. However, 5-hydroxytryptophan and DOPA also appeared to have a protective action against reserpine, comparable with that of m-tyrosine. Therefore, the present data suggest that the interaction between m-tyrosine and reserpine. resulting in a protection of the dopamine stores against depletion, is not a specific effect. © 1976.
Stoof, J. C., Schipper, J., & Mulder, A. H. (1976). On the specificity and mechanism of action of m-tyrosine in antagonizing the central effects of reserpine in rats. Neuropharmacology, 15(7), 379–382. https://doi.org/10.1016/0028-3908(76)90112-X