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Study · Measured the body's own peptide · 1993

2 results

Influence of oxytocin removal from the corpus luteum on secretory function and duration of the oestrous cycle in cattle.

Kotwica J, Skarzynski D

Journal of reproduction and fertility1 Mar 1993Cited by 58 (Europe PMC)

PMID8501712 (opens in a new tab)DOI10.1530/jrf.0.0970411 (opens in a new tab)PepBankPUB-08501712
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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)Mechanism

    In heifers, noradrenaline infusion on days 11 and 12 of the oestrous cycle raised peripheral levels of the body's own oxytocin, and the response fell with the second and third infusion.

    In plain wordsIn heifers, noradrenaline raised the body's own oxytocin in blood on days 11 and 12, with smaller responses after repeated infusions.

    Peptide
    Oxytocin
    Outcome
    IncreaseOxytocin response to noradrenaline on days 11 and 12
    Study

    cattlen: not reported in source

    Outcome group
    Sex hormones and fertility · Reproductive and sexual health

    Source sentences

    Summary
    There was a significant (P < 0.05) response of oxytocin to each noradrenaline stimulation on days 11 and 12, although on each day the response to the second infusion was reduced and further reduced after the third infusion.
    1 context sentence
    Summary · context
    Mature heifers (n = 31) were infused with either saline or noradrenaline (0.3 microgram kg-1 min-1) via a cannula inserted into the aorta abdominalis through the coccygeal artery (cranial to the origin of the ovarian artery).

    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)Mechanism

    In heifers, on days 15 and 16 of the oestrous cycle only the first noradrenaline infusion caused a clear surge of the body's own oxytocin; later infusions gave much smaller increases.

    In plain wordsIn heifers, noradrenaline raised the body's own oxytocin clearly only at the first infusion on days 15 and 16.

    Peptide
    Oxytocin
    Outcome
    IncreaseOxytocin response to noradrenaline on days 15 and 16
    Study

    cattlen: not reported in source

    Outcome group
    Sex hormones and fertility · Reproductive and sexual health

    Source sentences

    Summary
    On days 15 and 16, only the first noradrenaline infusion caused a clear surge of oxytocin with much smaller increases in oxytocin secretion after subsequent infusions
    1 context sentence
    Summary · context
    Mature heifers (n = 31) were infused with either saline or noradrenaline (0.3 microgram kg-1 min-1) via a cannula inserted into the aorta abdominalis through the coccygeal artery (cranial to the origin of the ovarian artery).

    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, 20:03 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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