Biochem Pharmacol. 2008 Mar 15;75(6):1411-5. Epub 2007 Dec 4.

Lobeline effects on tonic and methamphetamine-induced dopamine release.

Wilhelm CJ, Johnson RA, Eshleman AJ, Janowsky A.

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Research Service, Veterans Affairs Medical Center, Portland, OR 97239, USA.

Abstract

The mechanisms of interaction between lobeline and the dopamine transporter (DAT) or the vesicular monoamine transporter (VMAT-2) are not clear. The goal of this study was to elucidate the effects of lobeline on these transporters in a cell system co-expressing the DAT and VMAT-2. Lobeline caused release of [(3)H]dopamine to a similar extent as reserpine (VMAT-2 inhibitor), but was less efficacious than methamphetamine or dopamine. Additionally, lobeline decreased the [(3)H]dopamine-releasing effects of methamphetamine, unlike reserpine which increased release by methamphetamine. These results suggest that lobeline has unique properties at the DAT and VMAT-2 which may make it useful as a pharmacotherapeutic to treat methamphetamine abuse.

PMID:: 18191815; [PubMed - indexed for MEDLINE]
PMCID:: PMC2435375

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