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The effect of glycogen phosphorolysis on basal glutaminergic transmission.

Abstract：

:Astrocytic glycogen metabolism sustains neuronal activity but its impact on basal glutamatergic synaptic transmission is not clear. To address this issue, we have compared the effect of glycogen breakdown inhibition on miniature excitatory postsynaptic currents (mEPSCs) in rat hippocampal pure neuronal culture (PNC) and in astrocyte-neuronal co-cultures (ANCC). Amplitudes of mEPSC in ANCC were nearly twice as large as in PNC with no difference in current kinetics. Inhibition of glycogen phosphorylase reduced mEPSC amplitude by roughly 40% in ANCC being ineffective in PNC. Altogether, these data indicate that astrocyte-neuronal interaction enhances basal mEPSCs in ANCC mainly due to astrocytic glycogen metabolism.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Mozrzymas J,Szczęsny T,Rakus D

doi

10.1016/j.bbrc.2010.12.033

subject

Has Abstract

pub_date

2011-01-14 00:00:00

pages

652-5

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(10)02258-8

journal_volume

404

pub_type

杂志文章

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