Evidence map›Paper›PMID 42177180›Full record

ArticleNature communications2026

Astrocyte activation in the ventrolateral medulla modulates breathing and arousal states.

Luiz Marcelo Oliveira, Nicole Castro Miranda, Hyun-Kyoung Lim, Liza Severs, Ana Carolina Takakura, Thiago Santos Moreira, Li Li, Franck Kalume, Jan-Marino Ramirez

Abstract read
In one paragraph

Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Luiz Marcelo OliveiraNorcliffe Foundation Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, WA, USA.ORCID http://orcid.org/0000-0002-4071-4572
Nicole Castro MirandaNorcliffe Foundation Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, WA, USA.ORCID http://orcid.org/0000-0003-0202-1027
Hyun-Kyoung LimNorcliffe Foundation Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, WA, USA.ORCID http://orcid.org/0000-0003-1818-420X
Liza SeversBasic Sciences Division, Fred Hutchchinson Cancer Center, Seattle, WA, USA.ORCID http://orcid.org/0000-0002-9470-8186
Ana Carolina TakakuraDepartment of Pharmacology, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, Brazil.
Thiago Santos MoreiraDepartment of Physiology and Biophysics, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, Brazil.
Li LiNorcliffe Foundation Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, WA, USA.ORCID http://orcid.org/0000-0001-6131-4394
Franck KalumeNorcliffe Foundation Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, WA, USA.
Jan-Marino RamirezNorcliffe Foundation Center for Integrative Brain Research, Seattle Children's Research Institute, Seattle, WA, USA. jan.ramirez@seattlechildrens.org.ORCID http://orcid.org/0000-0002-5626-3999

Funding

Unraveling respiratory rhythm generation in the medullary networkR01HL126523 · NHLBI · SEATTLE CHILDREN'S HOSPITAL · PI Jan M. Ramirez · 2015 to 2026
$8.3M
Unraveling the dynamic mechanisms underlying opioid respiratory depressionR01HL144801 · NHLBI · SEATTLE CHILDREN'S HOSPITAL · PI Jan M. Ramirez · 2019 to 2026
$5.2M
Neuroglial interactions underlying the generation of the sighR01HL151389 · NHLBI · SEATTLE CHILDREN'S HOSPITAL · PI RAMIREZ, JAN M. · 2020 to 2023
$3.2M
Unraveling the Locus Coeruleus Circuitry in Opioidinduced Sleep DisturbancesR00DA053336 · NIDA · SEATTLE CHILDREN'S HOSPITAL · PI LI, LI · 2023 to 2025
$747k
NHLBI NIH HHS R01 HL126523NHLBI NIH HHS R01 HL144801NHLBI NIH HHS R01 HL151389NIDA NIH HHS R00 DA053336
6 · The paper itself

Abstract

Astrocytes play vital roles in regulating brain states across organisms. Specifically, they regulate breathing behaviors and associated brain states, including facilitating transitions between breathing phases by sensing changes in O₂ and CO₂ levels, regulating the sleep-wake cycle, and impacting arousal and wakefulness. Here, we test the hypothesis that astrocytes in the ventral respiratory column (VRC) are important for arousal and sigh generation in alert mice. Our results reveal that a subset of Aldh1l1 cells in the VRC are activated prior to sigh generation and are recruited by hypoxia. Chemogenetic or optogenetic activation of Aldh1l1 astrocytes in the VRC increased the probability of evoking arousals with sighs. We also demonstrated that activating Aldh1l1 astrocytes increased calcium transients in catecholaminergic neurons in the VRC immediately before arousal with sighs. We conclude that medullary astrocytes can modulate sigh generation and arousal transitions, and are important for the ventilatory and arousal response to hypoxia.

Indexed as

ArousalAstrocytesMedulla OblongataRespirationAnimalsHypoxiaMaleMiceMice, Inbred C57BLNeuronsRetinal DehydrogenaseWakefulnessRetinal Dehydrogenase

Identifiers

PMID42177180
PMCPMC13402709

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.