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Cited by 744

The DOI matches its Crossref record; 8 of the 8 references it cites were found in a registry or an index.

Brain metabolism dictates the polarity of astrocyte control over arterioles

Open access
Gordon, Grant R. J., Choi, Hyun B., Rungta, Ravi L., Ellis-Davies, Graham C. R., MacVicar, Brian A.·2008·Nature

Abstract

Calcium signalling in astrocytes couples changes in neural activity to alterations in cerebral blood flow by eliciting vasoconstriction or vasodilation of arterioles. However, the mechanism for how these opposite astrocyte influences provide appropriate changes in vessel tone within an environment that has dynamic metabolic requirements remains unclear. Here we show that the ability of astrocytes to induce vasodilations over vasoconstrictions relies on the metabolic state of the rat brain tissue. When oxygen availability is lowered and astrocyte calcium concentration is elevated, astrocyte glycolysis and lactate release are maximized. External lactate attenuates transporter-mediated uptake from the extracellular space of prostaglandin E2, leading to accumulation and subsequent vasodilation. In conditions of low oxygen concentration extracellular adenosine also increases, which blocks astrocyte-mediated constriction, facilitating dilation. These data reveal the role of metabolic substrates in regulating brain blood flow and provide a mechanism for differential astrocyte control over cerebrovascular diameter during different states of brain activation.

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Crossref · 10.1038/nature07525

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Metadata

Authors
Gordon, G. R. J., Choi, H. B., Rungta, R. L., Ellis-Davies, G. C. R., & MacVicar, B. A.
Venue
Nature
Published
2008-10-29
Volume
456
Issue
7223
Pages
745-749
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1971285535
Cited by
744
References
8
FWCI
27.53
Type
journal article
Language
en
Open access
green

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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