Evidence map›Paper›PMID 20844258›Full record

ArticleAmerican journal of physiology. Regulatory, integrative and comparative physiology2010

Circulation and metabolic rates in a natural hibernator: an integrative physiological model.

Marshall Hampton, Bethany T Nelson, Matthew T Andrews

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Regulatory, integrative and comparative physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
7.9field-weighted citation impact, top 3% 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

36 citing papers in PubMed, 58 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Cold-Induced Suppression of Myogenesis in Skeletal Muscle Stem Cells Contributes to Delayed Muscle Regeneration During Hibernation.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  5. Article
  6. Telomere dynamics during hibernation in a tropical primate.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2024
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Shifts in metabolic fuel use coincide with maximal rates of ventilation and body surface rewarming in an arousing hibernator.American journal of physiology. Regulatory, integrative and comparative physiology · 2019
    Article
  13. Cardiovascular resistance to thrombosis in 13-lined ground squirrels.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2019
    Article
  14. Article
  15. Review
  16. Temperature effects on the activity, shape, and storage of platelets from 13-lined ground squirrels.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2017
    Article
  17. Article
  18. Enhanced oxidative capacity of ground squirrel brain mitochondria during hibernation.American journal of physiology. Regulatory, integrative and comparative physiology · 2017
    Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Marshall HamptonDepartment of Mathematics and Statistics, University of Minnesota Duluth, Duluth, Minnesota, USA. mhampton@d.umn.edu
Bethany T Nelson
Matthew T Andrews
University of Minnesota · US

Funding

Genetic Control of Heart Function in a Hibernating MammalRC2HL101625 · NHLBI · UNIVERSITY OF MINNESOTA DULUTH · PI ANDREWS, MATTHEW T. · 2009 to 2010
$1.2M
NHLBI NIH HHS 1RC2-HL-101625-01NHLBI NIH HHS RC2 HL101625
6 · The paper itself

Abstract

Small hibernating mammals show regular oscillations in their heart rate and body temperature throughout the winter. Long periods of torpor are abruptly interrupted by arousals with heart rates that rapidly increase from 5 beats/min to over 400 beats/min and body temperatures that increase by ∼30°C only to drop back into the hypothermic torpid state within hours. Surgically implanted transmitters were used to obtain high-resolution electrocardiogram and body temperature data from hibernating thirteen-lined ground squirrels (Spermophilus tridecemlineatus). These data were used to construct a model of the circulatory system to gain greater understanding of these rapid and extreme changes in physiology. Our model provides estimates of metabolic rates during the torpor-arousal cycles in different model compartments that would be difficult to measure directly. In the compartment that models the more metabolically active tissues and organs (heart, brain, liver, and brown adipose tissue) the peak metabolic rate occurs at a core body temperature of 19°C approximately midway through an arousal. The peak metabolic rate of the active tissues is nine times the normothermic rate after the arousal is complete. For the overall metabolic rate in all tissues, the peak-to-resting ratio is five. This value is high for a rodent, which provides evidence for the hypothesis that the arousal from torpor is limited by the capabilities of the cardiovascular system.

Indexed as

Analysis of VarianceAnimalsBasal MetabolismBlood CirculationBody TemperatureElectrocardiographyEnergy MetabolismHeart RateHibernationSciuridaeSeasonsTelemetry

Identifiers

PMID20844258
PMCPMC3008751
OpenAlexW2135522164

What OpenQuestion holds

Textmetadata
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.