Astrocyte-mediated metaplasticity in the hippocampus: Help or hindrance?

Abstract:

:For over two decades it has been increasingly appreciated that synaptic plasticity mechanisms are subject to activity-dependent metaplastic regulation. In recent years it has also become apparent that astrocytes are active partners with neurons at synapses, and have the capability to powerfully regulate synaptic plasticity. However, the field of astrocyte-mediated metaplasticity is still very much in its infancy. Further, what contribution astrocyte-mediated metaplasticity makes to hippocampal dysfunction is almost entirely unknown. This contribution may be particularly important given that altered plasticity in the hippocampus is a hallmark of several disease states. The known ways by which astrocytes exert metaplasticity are reviewed here, and hypothetical mechanisms of astrocyte-mediated metaplasticity are considered for the benefit of future investigation. The latter half of this review focuses on what part these mechanisms, and others, may play in the diseased or injured hippocampus, and how this might contribute to the altered cognition seen in several pathologies common to the hippocampus.

journal_name

Neuroscience

journal_title

Neuroscience

authors

Jones OD

doi

10.1016/j.neuroscience.2015.08.035

subject

Has Abstract

pub_date

2015-11-19 00:00:00

pages

113-24

eissn

0306-4522

issn

1873-7544

pii

S0306-4522(15)00767-8

journal_volume

309

pub_type

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