Genetic analysis of the behavioral response to d-amphetamine in mice.

The ambulatory and rearing responses to d-amphetamine were studied in a battery of recombinant inbred strains and in three closely related strains: C57BL/6J, C57Bl/10J, and C57BL/LBy. Differences in the increase of ambulation (stimulation) caused by d-amphetamine were seen between C57BL/6By and the other two C57BL strains. Analysis of F1 and backcross matings suggests a one-gene model. A mutation at the genetic locus that affects the response to d-amphetamine seems to have taken place in the C5BL/6By strain. Strain differences in the decrease of rearing behavior (inhibition) produced by the drug were observed in recombinant inbred strains. Although th of l-dihydroxyphenylalanine (L-dopa) and d,l,5-hydroxytryptophan (d,l,5-HTP) on reserpine-induced amnesia.