Title : Effect of MK-801 on the decrease in tryptophan hydroxylase induced by methamphetamine and its methylenedioxy analog.

Pub. Date : 1989 Jun 20

PMID : 2570704






7 Functional Relationships(s)
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1 Effect of MK-801 on the decrease in tryptophan hydroxylase induced by methamphetamine and its methylenedioxy analog. Methamphetamine tryptophan hydroxylase 1 Rattus norvegicus
2 The role of N-methyl-D-aspartate (NMDA) receptors in the decrease in neostriatal tryptophan hydroxylase (TPH) activity induced by repeated high doses of methamphetamine or 3,4-methylenedioxymethamphetamine (MDMA) was evaluated. Methamphetamine tryptophan hydroxylase 1 Rattus norvegicus
3 The role of N-methyl-D-aspartate (NMDA) receptors in the decrease in neostriatal tryptophan hydroxylase (TPH) activity induced by repeated high doses of methamphetamine or 3,4-methylenedioxymethamphetamine (MDMA) was evaluated. Methamphetamine tryptophan hydroxylase 1 Rattus norvegicus
4 These treatments with methamphetamine or MDMA reduced neostriatal TPH activity to 26 and 34% of control, respectively. Methamphetamine tryptophan hydroxylase 1 Rattus norvegicus
5 Coadministration of MK-801 (2.5 mg/kg) significantly attenuated the methamphetamine-induced decrease in TPH activity (66% of control), but did not alter the effect of MDMA. Methamphetamine tryptophan hydroxylase 1 Rattus norvegicus
6 This study suggests that excitatory amino acids may participate in the methamphetamine-induced decline in central TPH activity, and that the mechanism by which MDMA and methamphetamine decreases TPH activity may differ. Methamphetamine tryptophan hydroxylase 1 Rattus norvegicus
7 This study suggests that excitatory amino acids may participate in the methamphetamine-induced decline in central TPH activity, and that the mechanism by which MDMA and methamphetamine decreases TPH activity may differ. Methamphetamine tryptophan hydroxylase 1 Rattus norvegicus