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Early loss of dopaminergic terminals in striosomes after MDMA administration to mice

Noelia Granado, Isabel Escobedo, Esther O’shea, María Isabel Colado, Rosario Moratalla

Synapse October 25, 2007 DOI: 10.1002/syn.20466 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Experimental study Peer reviewed
Population Mice
Intervention MDMA
Topics MDMA
Keywords Striatum Dopaminergic Amphetamine Dopamine transporter Pharmacology Neurotoxicity
Citations 59
Key findings MDMA caused significantly greater reductions in tyrosine hydroxylase and dopamine transporter immunostaining in striosomes than in the matrix compartment of the mouse striatum, indicating differential vulnerability of these compartments to MDMA-induced neurotoxicity.

Abstract

Abstract The amphetamine analogue 3,4‐methylenedioxymethamphetamine (MDMA or “Ecstasy”) is a popular drug of abuse which causes different neurotoxic effects in the mouse compared with the rat. In mice, MDMA produces damage to striatal dopamine terminals, having little long‐term effects on serotonin (5‐HT) containing neurons. A relevant feature of the striatum is its striosome/matrix compartmental organization; defined by different connexions, and functions. In this study we examined the long‐term effect induced by MDMA on tyrosine hydroxylase (TH) and dopamine transporter (DAT) immunoreactivity in the striosomes and matrix compartments of mouse striatum. Mice given MDMA showed significant reductions in TH and DAT immunostaining in striatum compared with control animals. Interestingly, this effect was considerably more pronounced in striosomes than in the matrix. These data provide the first evidence that striosomes and matrix compartments of the mouse striatum have differential vulnerability to MDMA and that the long‐term neurotoxicity induced by MDMA in mice is primarily associated with a loss of striosomal dopamine fibres. Synapse 62:80–84, 2008. © 2007 Wiley‐Liss, Inc.

Comparable studies

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