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Glutamate transport and storage in synaptic vesicles
1Mental Health Research Institute, Medical School, The University of Michigan, Ann Arbor 48109, USA.
Japanese Journal of Pharmacology
|June 25, 1998
Summary
Vesicular glutamate transporters concentrate glutamate in nerve endings for neurotransmission. This review covers their mechanisms, pharmacology, and a newly discovered inhibitor, inhibitory protein factor (IPF).
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Glutamate is a key excitatory neurotransmitter in the vertebrate central nervous system.
- Glutamatergic nerve endings utilize vesicular transporters to store and release glutamate via exocytosis.
- Understanding glutamate transport is crucial for comprehending neurotransmission.
Purpose of the Study:
- To review recent investigations into the mechanisms of vesicular glutamate uptake.
- To discuss pharmacological agents targeting vesicular glutamate transporters.
- To introduce the newly discovered endogenous inhibitor, inhibitory protein factor (IPF).
Main Methods:
- Review of recent scientific literature on vesicular glutamate transport.
- Analysis of data concerning glutamate transporter and H+-ATPase function.
- Discussion of pharmacological interactions with vesicular glutamate transporters.
Main Results:
- Vesicular glutamate uptake involves a specific transporter and a vacuolar-type H+-ATPase.
- The precise operational mechanism of this system remains under investigation.
- A novel endogenous inhibitor, inhibitory protein factor (IPF), has been identified.
Conclusions:
- Vesicular glutamate transport is essential for synaptic vesicle function.
- Further research is needed to elucidate the transporter-ATPase mechanism.
- Inhibitory protein factor (IPF) may play a role in modulating presynaptic neurotransmission.