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Curr Opin Neurobiol. 2017 Dec;47:80-85. doi: 10.1016/j.conb.2017.09.012. Epub 2017 Oct 17.

Control of brain energy supply by astrocytes.

Author information

1
Department of Neuroscience, Physiology & Pharmacology, University College London, Gower Street, London WC1E 6BT, UK.
2
Department of Neuroscience, Physiology & Pharmacology, University College London, Gower Street, London WC1E 6BT, UK. Electronic address: d.attwell@ucl.ac.uk.

Abstract

Astrocytes form an anatomical bridge between the vasculature and neuronal synapses. Recent work suggests that they play a key role in regulating brain energy supply by increasing blood flow to regions where neurons are active, and setting the baseline level of blood flow. Controversy persists over whether lactate derived from astrocyte glycolysis is used to power oxidative phosphorylation in neurons, but astrocytes sustain neuronal ATP production by recycling neurotransmitter glutamate that would otherwise need to be resynthesised from glucose, and by providing a short-term energy store in the form of glycogen that can be mobilised when neurons are active.

PMID:
29054039
DOI:
10.1016/j.conb.2017.09.012
[Indexed for MEDLINE]

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