Nature Communications (Feb 2016)

Mechanisms of amphetamine action illuminated through optical monitoring of dopamine synaptic vesicles in Drosophila brain

  • Zachary Freyberg,
  • Mark S. Sonders,
  • Jenny I. Aguilar,
  • Takato Hiranita,
  • Caline S. Karam,
  • Jorge Flores,
  • Andrea B. Pizzo,
  • Yuchao Zhang,
  • Zachary J. Farino,
  • Audrey Chen,
  • Ciara A. Martin,
  • Theresa A. Kopajtic,
  • Hao Fei,
  • Gang Hu,
  • Yi-Ying Lin,
  • Eugene V. Mosharov,
  • Brian D. McCabe,
  • Robin Freyberg,
  • Kandatege Wimalasena,
  • Ling-Wei Hsin,
  • Dalibor Sames,
  • David E. Krantz,
  • Jonathan L. Katz,
  • David Sulzer,
  • Jonathan A. Javitch

DOI
https://doi.org/10.1038/ncomms10652
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 15

Abstract

Read online

Amphetamines are known to enhance extracellular dopamine levels, but the underlying mechanisms are unclear. Utilising a new pH biosensor for synaptic vesicles, the authors show that amphetamines diminish vesicle pH gradients, disrupting dopamine packaging and leading to increased neurotransmitter release.