Evidence map›Paper›PMID 21795527›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2011

Season primes the brain in an arctic hibernator to facilitate entrance into torpor mediated by adenosine A(1) receptors.

Tulasi R Jinka, Øivind Tøien, Kelly L Drew

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed
17.2field-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

69 citing papers in PubMed, 120 citations in OpenAlex.

  1. Article
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9 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Tulasi R JinkaInstitute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, Alaska 99775-7000, USA.
Øivind Tøien
Kelly L Drew
University of Alaska Fairbanks · US

Funding

Rac-1 mediated superoxide signaling in neuronsU54NS041069 · NINDS · UNIVERSITY OF ALASKA FAIRBANKS · PI DUFFY, LAWRENCE K · 2000 to 2011
$14.1M
Targeting Central A1 Adenosine Receptors Induces Hypothermia for StrokeR15NS070779 · NINDS · UNIVERSITY OF ALASKA FAIRBANKS · PI DREW, KELLY L · 2010 to 2014
$949k
NINDS NIH HHS NS041069-06NINDS NIH HHS R15 NS070779NINDS NIH HHS R15NS070779NINDS NIH HHS U54 NS041069
6 · The paper itself

Abstract

Torpor in hibernating mammals defines the nadir in mammalian metabolic demand and body temperature that accommodates seasonal periods of reduced energy availability. The mechanism of metabolic suppression during torpor onset is unknown, although the CNS is a key regulator of torpor. Seasonal hibernators, such as the arctic ground squirrel (AGS), display torpor only during the winter, hibernation season. The seasonal character of hibernation thus provides a clue to its regulation. In the present study, we delivered adenosine receptor agonists and antagonists into the lateral ventricle of AGSs at different times of the year while monitoring the rate of O(2) consumption and core body temperature as indicators of torpor. The A(1) antagonist cyclopentyltheophylline reversed spontaneous entrance into torpor. The adenosine A(1) receptor agonist N(6)-cyclohexyladenosine (CHA) induced torpor in six of six AGSs tested during the mid-hibernation season, two of six AGSs tested early in the hibernation season, and none of the six AGSs tested during the summer, off-season. CHA-induced torpor within the hibernation season was specific to A(1)AR activation; the A(3)AR agonist 2-Cl-IB MECA failed to induce torpor, and the A(2a)R antagonist MSX-3 failed to reverse spontaneous onset of torpor. CHA-induced torpor was similar to spontaneous entrance into torpor. These results show that metabolic suppression during torpor onset is regulated within the CNS via A(1)AR activation and requires a seasonal switch in the sensitivity of purinergic signaling.

Indexed as

SeasonsAdenosineAnimalsArctic RegionsBody TemperatureBody Temperature RegulationBrainHibernationInjections, IntraventricularOxygen ConsumptionPurinergic AntagonistsPurinergic P1 Receptor AgonistsReceptor, Adenosine A1SciuridaeTelemetryTheophylline5'-N-methylcarboxamideadenosine8-cyclopentyl-1,3-dimethylxanthineAdenosineMSX 3 compoundN(6)-cyclohexyladenosinePurinergic AntagonistsPurinergic P1 Receptor AgonistsReceptor, Adenosine A1TheophyllineXanthines

Identifiers

PMID21795527
PMCPMC3325781
OpenAlexW1999405361

What OpenQuestion holds

Textmetadata
LicenceTDM
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.