The application of allostasis and allostatic load in animal species: A scoping review.

Principles of allostasis and allostatic load have been widely applied in human research to assess the impacts of chronic stress on physiological dysregulation. Over the last few decades, researchers have also applied these concepts to non-human animals. However, there is a lack of uniformity in how...

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Main Authors: Kathryn E Seeley, Kathryn L Proudfoot, Ashley N Edes
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2022-01-01
Series:PLoS ONE
Online Access:https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0273838&type=printable
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author Kathryn E Seeley
Kathryn L Proudfoot
Ashley N Edes
author_facet Kathryn E Seeley
Kathryn L Proudfoot
Ashley N Edes
author_sort Kathryn E Seeley
collection DOAJ
description Principles of allostasis and allostatic load have been widely applied in human research to assess the impacts of chronic stress on physiological dysregulation. Over the last few decades, researchers have also applied these concepts to non-human animals. However, there is a lack of uniformity in how the concept of allostasis is described and assessed in animals. The objectives of this review were to: 1) describe the extent to which the concepts of allostasis and allostatic load are applied theoretically to animals, with a focus on which taxa and species are represented; 2) identify when direct assessments of allostasis or allostatic load are made, which species and contexts are represented, what biomarkers are used, and if an allostatic load index was constructed; and 3) detect gaps in the literature and identify areas for future research. A search was conducted using CABI, PubMed, Agricola, and BIOSIS databases, in addition to a complementary hand-search of 14 peer-reviewed journals. Search results were screened, and articles that included non-human animals, as well as the terms "allostasis" or "allostatic" in the full text, were included. A total of 572 articles met the inclusion criteria (108 reviews and 464 peer-reviewed original research). Species were represented across all taxa. A subset of 63 publications made direct assessments of allostatic load. Glucocorticoids were the most commonly used biomarker, and were the only biomarker measured in 25 publications. Only six of 63 publications (9.5%) constructed an allostatic load index, which is the preferred methodology in human research. Although concepts of allostasis and allostatic load are being applied broadly across animal species, most publications use single biomarkers that are more likely indicative of short-term rather than chronic stress. Researchers are encouraged to adopt methodologies used in human research, including the construction of species-specific allostatic load indexes.
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spelling doaj-art-cbf2e85e0f804ad6ae20db06d09a7a122025-02-05T05:32:50ZengPublic Library of Science (PLoS)PLoS ONE1932-62032022-01-01178e027383810.1371/journal.pone.0273838The application of allostasis and allostatic load in animal species: A scoping review.Kathryn E SeeleyKathryn L ProudfootAshley N EdesPrinciples of allostasis and allostatic load have been widely applied in human research to assess the impacts of chronic stress on physiological dysregulation. Over the last few decades, researchers have also applied these concepts to non-human animals. However, there is a lack of uniformity in how the concept of allostasis is described and assessed in animals. The objectives of this review were to: 1) describe the extent to which the concepts of allostasis and allostatic load are applied theoretically to animals, with a focus on which taxa and species are represented; 2) identify when direct assessments of allostasis or allostatic load are made, which species and contexts are represented, what biomarkers are used, and if an allostatic load index was constructed; and 3) detect gaps in the literature and identify areas for future research. A search was conducted using CABI, PubMed, Agricola, and BIOSIS databases, in addition to a complementary hand-search of 14 peer-reviewed journals. Search results were screened, and articles that included non-human animals, as well as the terms "allostasis" or "allostatic" in the full text, were included. A total of 572 articles met the inclusion criteria (108 reviews and 464 peer-reviewed original research). Species were represented across all taxa. A subset of 63 publications made direct assessments of allostatic load. Glucocorticoids were the most commonly used biomarker, and were the only biomarker measured in 25 publications. Only six of 63 publications (9.5%) constructed an allostatic load index, which is the preferred methodology in human research. Although concepts of allostasis and allostatic load are being applied broadly across animal species, most publications use single biomarkers that are more likely indicative of short-term rather than chronic stress. Researchers are encouraged to adopt methodologies used in human research, including the construction of species-specific allostatic load indexes.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0273838&type=printable
spellingShingle Kathryn E Seeley
Kathryn L Proudfoot
Ashley N Edes
The application of allostasis and allostatic load in animal species: A scoping review.
PLoS ONE
title The application of allostasis and allostatic load in animal species: A scoping review.
title_full The application of allostasis and allostatic load in animal species: A scoping review.
title_fullStr The application of allostasis and allostatic load in animal species: A scoping review.
title_full_unstemmed The application of allostasis and allostatic load in animal species: A scoping review.
title_short The application of allostasis and allostatic load in animal species: A scoping review.
title_sort application of allostasis and allostatic load in animal species a scoping review
url https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0273838&type=printable
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