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Study · Measured the body's own peptide · 2020

1 result

Evaluating changes in salivary oxytocin and cortisol following positive reinforcement training in two adult male western lowland gorillas (Gorilla gorilla gorilla).

Leeds A, Good J, Schook MW, Dennis PM, Stoinski TS, Willis MA, Lukas KE

Zoo biology19 Nov 2019Cited by 8 (Europe PMC)

PMID31746026 (opens in a new tab)DOI10.1002/zoo.21524 (opens in a new tab)PepBankPUB-31746026
Publisher pagePubMedAsk about this study
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Summary

The text of this summary is not shown here, because the article license does not allow reuse. Read it at the source (opens in a new tab)

Text rights: Publisher copyright. Results still quote short attributed sentences.

Results from this study1

No result from this study comes from a test of the peptide.

Natural levels measured1

These results measure the body's own peptide. Nobody was given the peptide. They are not evidence about taking it. They are left out of key results, evidence counts and charts.

  1. 01AnimalEndogenous levelAnimal study (in vivo)Other

    In two adult male western lowland gorillas, salivary oxytocin did not change after positive reinforcement training with animal care staff.

    In plain wordsIn two gorillas, the body's own oxytocin in saliva did not change after training sessions with their caregivers.

    Peptide
    Oxytocin
    Outcome
    No significant changeSalivary oxytocin after positive reinforcement training
    Study

    Western lowland gorillan = 2

    Outcome group
    Endogenous peptide levels · Endocrine and hormones

    Source sentences

    Summary
    Following PRT, no change in OXT was observed.
    1 context sentence
    Summary · context
    This study evaluated salivary OXT and salivary CORT concentrations in two adult male western lowland gorillas (Gorilla gorilla gorilla) following PRT with their primary animal care staff.

    This result measures the body's own Oxytocin. Nobody was given the peptide. It is not evidence about taking it.

AI wrote and checked these results. AI can make mistakes, so check important results against the source.

Version history

PepBank keeps every version of the data on this study. Status changes from Retraction Watch, Europe PMC and Crossref are listed with their source.

  1. Version 2Current

    11 Oct 2026, 00:50 UTC

    Study results updated

  2. Version 1

    9 Oct 2026, 02:49 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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