Evidence map›Paper›PMID 20587157›Full record

ArticleJournal of the American Association for Laboratory Animal Science : JAALAS2010

Identification of markers for imminent death in mice used in longevity and aging research.

Maria A Ray, Nancy A Johnston, Steven Verhulst, Rita A Trammell, Linda A Toth

Abstract read
In one paragraph

Article in Journal of the American Association for Laboratory Animal Science : JAALAS, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 1 pooled it
–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

54 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Genetic regulation of fasting-induced longevity effects.bioRxiv : the preprint server for biology · 2025
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  19. Obesity protects against sepsis-induced and norepinephrine-induced white adipose tissue browning.American journal of physiology. Endocrinology and metabolism · 2021
    Article
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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

5 authors.

Maria A RayDepartment of Medical Microbiology, Immunology, and Cell Biology, Southern Illinois University School of Medicine, Springfield, Illinois, USA.
Nancy A Johnston
Steven Verhulst
Rita A Trammell
Linda A Toth

Funding

BEHAVIORAL AND PHYSIOLOGIC PATHOBIOLOGY OF MICEK26RR017543 · NCRR · SOUTHERN ILLINOIS UNIVERSITY SCH OF MED · PI TOTH, LINDA A · 2002 to 2006
$615k
NCRR NIH HHS K26 RR017543NCRR NIH HHS K26-RR17543
6 · The paper itself

Abstract

The goal of this study was to identify objective criteria that would reliably predict imminent death in aged mice. Male and female ICR mice (age, 8 mo) were subcutaneously implanted with an identification chip for remote measurement of body temperature. Mice then were weighed and monitored regularly until spontaneous death occurred or until euthanasia was administered for humane reasons. Clinical signs that signaled implementation of euthanasia included inability to walk, lack of response to manipulation, large or ulcerated tumors, seizures, and palpable hypothermia. In mice that died spontaneously, gradual weight loss was the most frequent and earliest sign of imminent death. Hypothermia developed during the 2 wk prior to death. Slow or labored breathing were observed in about half of the mice before death. A composite score of temperature x weight can be used to provide an objective benchmark to signal increased observation or euthanasia of individual mice. Such assessment may allow the collection of terminal tissue samples without markedly altering longevity data, although application of this criterion may not be appropriate for all studies of longevity. Timely euthanasia of mice based on validated markers of imminent death can allow implementation of endpoints that alleviate terminal distress in aged mice, may not significantly affect longevity data, and can permit timely collection of biologic samples.

Indexed as

AgingBody TemperatureBody WeightDeathLongevityAnimalsAnimal WelfareBiomarkersEuthanasia, AnimalFemaleMaleMiceMice, Inbred ICRTime FactorsWeight LossBiomarkers

Identifiers

PMID20587157
PMCPMC2877298

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.