Temperature and 3,4-methylenedioxymethamphetamine alter human serotonin transporter-mediated dopamine uptake.

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Saldana SN, Barker EL

Temperature and 3,4-methylenedioxymethamphetamine alter human serotonin transporter-mediated dopamine uptake.

Neurosci Lett. 2004 Jan 16;354(3):209-12.

PubMed ID

14700733 [ View in PubMed

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Abstract

Although studies have suggested that dopamine can be transported by serotonin transporters (SERTs), such activity has not been characterized at the cloned SERTs. Dopamine and serotonin uptake by human SERT expressed in HEK-293 cells was compared at 37 and 40 degrees C. Elevated temperature was found to alter serotonin transport, but had no significant effect on dopamine transport. These effects led to a 10-fold increase in the serotonin:dopamine transport ratio reflecting an increased preference of SERTs for dopamine as opposed to serotonin at the higher temperature. The effects of 3,4-methylenedioxymethamphetamine (MDMA) on SERT-mediated dopamine transport were also evaluated by pre-incubating SERT-expressing cells with MDMA. The presence of intracellular MDMA caused a decrease in [3H]dopamine uptake but had no effect on [3H]serotonin transport suggesting that intracellular MDMA may be capable of inhibiting transporter function.

DrugBank Data that Cites this Article

Drug Targets

Drug	Target	Kind	Organism	Pharmacological Action	Actions
4-Methoxyamphetamine	Sodium-dependent serotonin transporter	Protein	Humans	Yes	Inhibitor	Details
Midomafetamine	Sodium-dependent serotonin transporter	Protein	Humans	Yes	Negative modulator	Details