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Yeh SY, Hsu FL. 
“The neurochemical and stimulatory effects of putative metabolites of 3,4-methylenedioxyamphetamine and 3,4-methylenedioxymethamphetamine in rats”. 
Pharmacol Biochem Behav. 1991;39(3):787-90.
Rats were injected SC with a dose of 10 mg/kg (as base) of 3,4-methylenedioxyamphetamine (MDA), or 3,4-methylenedioxymethamphetamine (MDMA), 4-hydroxy-3-methoxyamphetamine, alpha-methyldopamine and alpha-methylnorepinephrine, metabolites of MDA, and alpha-methylepinephrine, a putative metabolite of MDMA, twice daily for either 5 or 7 consecutive doses. The rats were killed 24 h after the last injection and monoamines in discrete brain regions were assayed. MDA, MDMA, 4-hydroxy-3-methoxyamphetamine and alpha-methyldopamine, but not alpha-methylepinephrine, decreased the concentration of serotonin (5-HT) in the frontal cortex. MDA and MDMA, but not 4-hydroxy-3-methoxyamphetamine, alpha-methyldopamine and alpha-methylepinephrine, also decreased the concentration of 5-hydroxyindoleacetic acid (5-HIAA) in the frontal cortexes. In stimulatory studies, MDA and MDMA, but not their metabolites except alpha-methylepinephrine, which increased activity at 15 and 30 min, increased locomotor activity from 15 to 180 min following the drug administration.
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