Clearance of glutamate inside the synapse and beyond.

Abstract:

:The heated debate over the level of postsynaptic receptor occupancy by transmitter has not been extinguished - indeed, new evidence is fanning the flames. Recent experiments using two-photon microscopy suggest that the concentration of glutamate in the synaptic cleft does not attain levels previously suggested. In contrast, recordings from glial cells and studies of extrasynaptic receptor activation indicate that significant quantities of glutamate escape from the cleft following exocytosis. Determining the amount of glutamate efflux from the synaptic cleft and the distance it diffuses is critical to issues of synaptic specificity and the induction of synaptic plasticity.

journal_name

Curr Opin Neurobiol

authors

Bergles DE,Diamond JS,Jahr CE

doi

10.1016/s0959-4388(99)80043-9

subject

Has Abstract

pub_date

1999-06-01 00:00:00

pages

293-8

issue

3

eissn

0959-4388

issn

1873-6882

pii

nb9304

journal_volume

9

pub_type

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