Vesicular release of ATP at central synapses
Yuri Pankratov1, Ulyana Lalo, Alexei Verkhratsky
1Faculty of Life Sciences, The University of Manchester, 1.124 Stopford Building, Oxford Road, Manchester, M13 9PT, UK.
Pflugers Archiv : European Journal of Physiology
|April 28, 2006
Summary
Adenosine triphosphate (ATP) is a fast excitatory neurotransmitter in the central nervous system (CNS). Our data show ATP is stored and released from distinct vesicle pools, not synchronized with GABA or glutamate release.
Area of Science:
- Neuroscience
- Cellular Biology
- Neurochemistry
Background:
- Adenosine triphosphate (ATP) functions as a rapid excitatory neurotransmitter in diverse central nervous system (CNS) regions.
- ATP's postsynaptic effects are mediated by P2X receptors, which are broadly distributed across the CNS.
- ATP release occurs through exocytosis from presynaptic terminals and diffusion via transmembrane pores in astroglial cells.
Purpose of the Study:
- To investigate the mechanisms of vesicular ATP release in the CNS.
- To determine the relationship between ATP release and other neurotransmitters like GABA and glutamate.
Main Methods:
- Analysis of vesicular storage and release mechanisms of ATP in central neuronal terminals.
- Examination of ATP corelease with other neurotransmitters.
Main Results:
- ATP is primarily stored in distinct vesicular pools within central neuronal terminals.
- ATP release from these distinct pools is not synchronized with the release of gamma-amino-butyric acid (GABA) or glutamate.
Conclusions:
- ATP utilizes unique vesicular mechanisms for storage and release in the CNS.
- The release of ATP is independent of the release of classical neurotransmitters such as GABA and glutamate, suggesting distinct regulatory pathways.
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