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Study · Measured the body's own peptide · 2011

2 results

Characteristic neurobiological patterns differentiate paternal responsiveness in two Peromyscus species.

Lambert KG, Franssen CL, Bardi M, Hampton JE, Hainley L, Karsner S, Tu EB, Hyer MM, Crockett A, Baranova A, Ferguson T, Ferguson T, Kinsley CH

Brain, behavior and evolution6 May 2011Cited by 43 (Europe PMC)

PMID21546770 (opens in a new tab)DOI10.1159/000326054 (opens in a new tab)PepBankPUB-21546770
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 study2

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

Natural levels measured2

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 biparental Peromyscus californicus mice, oxytocin-immunoreactive cell bodies and fibers were enhanced, alongside arginine vasopressin.

    In plain wordsIn Peromyscus californicus mice, the body's own oxytocin-labelled brain cells and fibers were more abundant, together with vasopressin.

    Peptide
    Oxytocin
    Outcome
    IncreaseAVP and oxytocin-immunoreactive cell bodies and fibers
    Study

    Peromyscus californicusn: not reported in source

    Biparental californicus and uniparental maniculatus males exposed to pups or brothers
    Outcome group
    Endogenous peptide levels · Nervous system and cognition

    Source sentences

    Summary
    Enhanced arginine vasopressin (AVP) and oxytocin (OT)-ir cell bodies and fibers
    1 context sentence
    Summary · context
    Using biparental and uniparental Peromyscus species (californicus and maniculatus, respectively) we assessed paternal responsiveness by exposing males to biological offspring, unrelated conspecific pups, or familiar brothers following a 24-hour separation.

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

  2. 02AnimalEndogenous levelAnimal study (in vivo)Other

    In biparental Peromyscus californicus mice, paraventricular nucleus oxytocin-immunoreactivity, together with other markers, characterized biological fathers.

    In plain wordsIn Peromyscus californicus mice, the body's own oxytocin in one brain area was part of a pattern that marked fathers.

    Peptide
    Oxytocin
    Outcome
    Not applicablePVN oxytocin-ir association with biological fathers
    Study

    Peromyscus californicusn: not reported in source

    Biparental californicus and uniparental maniculatus males exposed to pups or brothers
    Outcome group
    Endogenous peptide levels · Nervous system and cognition

    Source sentences

    Summary
    Specifically, associations among MPOA fos, CA1 fos, dentate gyrus GFAP, CA2 nestin-, and PVN OT-ir characterized biological fathers
    1 context sentence
    Summary · context
    Using biparental and uniparental Peromyscus species (californicus and maniculatus, respectively) we assessed paternal responsiveness by exposing males to biological offspring, unrelated conspecific pups, or familiar brothers following a 24-hour separation.

    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, 01:30 UTC

    Study results updated

  2. Version 1

    9 Oct 2026, 02:52 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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