Evidence map›Paper›PMID 28285822›Full record

ArticleNeuron2017

Astrocytes Control Circadian Timekeeping in the Suprachiasmatic Nucleus via Glutamatergic Signaling.

Marco Brancaccio, Andrew P Patton, Johanna E Chesham, Elizabeth S Maywood, Michael H Hastings

Open access · hybridAbstract read
In one paragraph

Article in Neuron, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 279 papers.

0numbers the graph read from it
0cells of the map it votes in
279citing papers in PubMed
18.3field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

279 citing papers in PubMed, 424 citations in OpenAlex.

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  11. Reconsidering mammalian circadian organization.Neurobiology of sleep and circadian rhythms · 2026
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  18. Regulation of Metabolic Rhythms by Glial Clocks.Journal of biological rhythms · 2026
    Article
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  20. Article

219 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Marco BrancaccioDivision of Neurobiology, MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK. Electronic address: marcob@mrc-lmb.cam.ac.uk.
Andrew P PattonDivision of Neurobiology, MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK.
Johanna E CheshamDivision of Neurobiology, MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK.
Elizabeth S MaywoodDivision of Neurobiology, MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK.
Michael H HastingsDivision of Neurobiology, MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK. Electronic address: mha@mrc-lmb.cam.ac.uk.
MRC Laboratory of Molecular Biology · GB

Funding

Medical Research Council MC_U105170643
6 · The paper itself

Abstract

The suprachiasmatic nucleus (SCN) of the hypothalamus orchestrates daily rhythms of physiology and behavior in mammals. Its circadian (∼24 hr) oscillations of gene expression and electrical activity are generated intrinsically and can persist indefinitely in temporal isolation. This robust and resilient timekeeping is generally regarded as a product of the intrinsic connectivity of its neurons. Here we show that neurons constitute only one "half" of the SCN clock, the one metabolically active during circadian daytime. In contrast, SCN astrocytes are active during circadian nighttime, when they suppress the activity of SCN neurons by regulating extracellular glutamate levels. This glutamatergic gliotransmission is sensed by neurons of the dorsal SCN via specific pre-synaptic NMDA receptor assemblies containing NR2C subunits. Remarkably, somatic genetic re-programming of intracellular clocks in SCN astrocytes was capable of remodeling circadian behavioral rhythms in adult mice. Thus, SCN circuit-level timekeeping arises from interdependent and mutually supportive astrocytic-neuronal signaling.

Indexed as

AnimalsAstrocytesCircadian ClocksCircadian RhythmFemaleGlutamic AcidMaleMiceMice, TransgenicMotor ActivityNeuronsReceptors, N-Methyl-D-AspartateSuprachiasmatic NucleusGlutamic AcidNR2C NMDA receptorReceptors, N-Methyl-D-Aspartateastrocytic-neuronal interactionscalcium oscillationscircadiancircadian behaviorcircuit synchronizationextracellular glutamateGABAmembrane potential oscillationsNMDAR2CSCN

Identifiers

PMID28285822
PMCPMC5376383
OpenAlexW2592834736

What OpenQuestion holds

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Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.