Cited by 37Neurotransmitter Receptor Influence on BehaviorSphingolipid Metabolism and SignalingNeuroscience and Neuropharmacology Research

Ceramide-Induced Alterations in Dopamine Transporter Function

Riddle, Evan L, Rau, Kristi S, Topham, Matthew K, Hanson, Glen R, Fleckenstein, Annette E·2003·European Journal of Pharmacology

Abstract

The purpose of this study was to determine the effects of ceramide on dopamine and serotonin (5-HT, 5-hydroxytryptamine) transporters. Exposure of rat striatal synaptosomes to C2-ceramide caused a reversible, concentration-dependent decrease in plasmalemmal dopamine uptake. In contrast, ceramide exposure increased striatal 5-HT synaptosomal uptake. This increase did not appear to be due to an increased uptake by the 5-HT transporter. Rather, the increase appeared to result from an increase in 5-HT transport through the dopamine transporter, an assertion evidenced by findings that this increase: (1) does not occur in hippocampal synaptosomes (i.e., a preparation largely devoid of dopamine transporters), (2) occurs in striatal synaptosomes prepared from para-chloroamphetamine-treated rats (i.e., a preparation lacking 5-HT transporters), (3) is attenuated by pretreatment with methylphenidate (i.e., a relatively selective dopamine reuptake inhibitor) and (4) is inhibited by exposure to exogenous dopamine (i.e., which presumably competes for uptake with 5-HT). Taken together, these results reveal that ceramide is a novel modulator of monoamine transporter function, and may alter the affinity of dopamine transporters for its primary substrate.

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Crossref · 10.1016/s0014-2999(02)02727-9

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Authors
Riddle, E. L., Rau, K. S., Topham, M. K., Hanson, G. R., & Fleckenstein, A. E.
Affiliations
University of Utah (US)
Corresponding author
Fleckenstein, Annette E
Venue
European Journal of Pharmacology
Publisher
Elsevier BV
Published
2003-01
Volume
458
Issue
1-2
Pages
31-36
ISSN
0014-2999 (ISSN-L)
OpenAlex
W2017922840
Cited by
37
References
24
Citations by year
2026: 2 · 2025: 4 · 2024: 4 · 2023: 2 · 2022: 4 · 2021: 1 · 2020: 2 · 2019: 1 · 2018: 2 · 2017: 3 · 2016: 2 · 2013: 1
FWCI
0.12
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Pharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5f31da014475-02)
  • National Institute on Drug Abuse (R01DA000869, DA 00869, DA 04222, DA 11389, K05DA000378, DA00378, DA14475, R01DA004222)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sphingolipid Metabolism and Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
ceramide, dopamine transporter, serotonin transporter, dopamine uptake, serotonin uptake, striatum, synaptosomes, monoamine transporters, C2-ceramide, methylphenidate, dopamine uptake inhibition, substrate affinity
MeSH terms
Animals, Binding, Competitive, Ceramides, Cocaine, Dopamine, Dose-Response Relationship, Drug, Male, Membrane Glycoproteins, Methylphenidate, Nerve Tissue Proteins, Serotonin, Synaptosomes, Tritium, Rats, Sprague-Dawley, Membrane Transport Proteins, Dopamine Plasma Membrane Transport Proteins, Rats

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