Evidence map›Paper›PMID 20865338›Full record

ArticleAge (Dordrecht, Netherlands)2011

Connecting serum IGF-1, body size, and age in the domestic dog.

Kimberly A Greer, Larry M Hughes, Michal M Masternak

Open access · bronzeAbstract read
In one paragraph

Article in Age (Dordrecht, Netherlands), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
1.0field-weighted citation impact, top 24% 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

44 citing papers in PubMed, 90 citations in OpenAlex.

  1. Blood biomarkers and breed genetics of aging in pet dogs.bioRxiv : the preprint server for biology · 2026
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  12. Postnatal expression ofProceedings. Biological sciences · 2022
    Article
  13. Article
  14. Alterations of Lipid Metabolism With Age and Weight in Companion Dogs.The journals of gerontology. Series A, Biological sciences and medical sciences · 2021
    Article
  15. Article
  16. A scan for genes associated with cancer mortality and longevity in pedigree dog breeds.Mammalian genome : official journal of the International Mammalian Genome Society · 2020
    Article
  17. Review
  18. Article
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  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 2 institutions in 1 country.

Kimberly A GreerIndiana University East, 2325 Chester Blvd, Richmond, IN 47374, USA. kagreer@iue.edu
Larry M Hughes
Michal M Masternak
Southern Illinois University School of Medicine · USIndiana University East · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Many investigations in recent years have targeted understanding the genetic and biochemical basis of aging. Collectively, genetic factors and biological mechanisms appear to influence longevity in general and specifically; reduction of the insulin/IGF-1 signaling cascade has extended life span in diverse species. Genetic alteration of mammals for life extension indicates correlation to serum IGF-1 levels in mice, and IGF-1 levels have been demonstrated as a physiological predictor of frailty with aging in man. Longevity and aging data in the dog offer a close measure of the natural multifactorial longevity interactions of genetic influence, IGF-1 signaling, and environmental factors such as exposure, exercise, and lifestyle. The absence of genetic alteration more closely represents the human longevity status, and the unique species structure of the canine facilitates analyses not possible in other species. These investigations aimed to measure serum IGF-1 in numerous purebred and mixed-breed dogs of variable size and longevity in comparison to age, gender, and spay/neuter differences. The primary objective of this investigation was to determine plasma IGF-1 levels in the adult dog, including a wide range of breeds and adult body weight. The sample set includes animals ranging from just a few months of age through 204 months and ranging in size from 5 to 160 lb. Four groups were evaluated for serum IGF-1 levels, including intact and neutered males, and intact and spayed females. IGF-1 loss over time, as a function of age, decreases in all groups with significant differences between males and females. The relationship between IGF-1 and weight differs depending upon spay/neuter status, but there is an overall increase in IGF-1 levels with increasing weight. The data, currently being interrogated further for delineation of IGF-1 receptor variants and sex differences, are being collected longitudinally and explored for longevity associations previously unavailable in non-genetically modified mammals.

Indexed as

Body SizeAgingAnimalsBiomarkersDogsFemaleInsulin-Like Growth Factor ILongevityMaleBiomarkersInsulin-Like Growth Factor I

Identifiers

PMID20865338
PMCPMC3168604
OpenAlexW2055277064

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.