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Study · Measured the body's own peptide · 1983

2 results

Basal hyperchlorhydria and its relation to the plasma concentrations of secretin, vasoactive intestinal polypeptide (VIP) and gastrin during prolonged strain.

Oektedalen O, Opstad PK, Schaffalitzky de Muckadell OB, Fausa O, Flaten O

Regulatory peptides1 Feb 1983Cited by 15 (Europe PMC)

PMID6844664 (opens in a new tab)DOI10.1016/0167-0115(83)90254-9 (opens in a new tab)PepBankPUB-06844664
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. 01HumanEndogenous levelNon-randomized trialOther

    In young men during a five day course of prolonged strain, plasma VIP concentration increased 2-fold.

    In plain wordsIn young men under prolonged physical strain, the body's own VIP in blood doubled.

    Peptide
    Vasoactive intestinal peptide (VIP, aviptadil)
    Outcome
    IncreasePlasma VIP during prolonged strain
    Study

    n: not reported in source

    Outcome group
    Endogenous peptide levels · Gastrointestinal

    Source sentences

    Summary
    Vasoactive intestinal polypeptide (VIP) increased 2-fold
    1 context sentence
    Summary · context
    Twenty young men divided into two groups participated in a five day training course with prolonged and heavy physical exercise, calorie supply deficiency and severe sleep deprivation.

    This result measures the body's own Vasoactive intestinal peptide (VIP, aviptadil). Nobody was given the peptide. It is not evidence about taking it.

  2. 02HumanEndogenous levelNon-randomized trialOther

    In young men during prolonged strain, the rise in plasma VIP was not influenced by reduction of gastric acid.

    In plain wordsIn young men under prolonged strain, the rise in the body's own VIP was not changed by reducing stomach acid.

    Peptide
    Vasoactive intestinal peptide (VIP, aviptadil)
    Outcome
    No significant changePlasma VIP and reduction of gastric acid
    Study

    n: not reported in source

    Comparator
    Reduction of gastric acid (gastric suction or cimetidine)
    Outcome group
    Endogenous peptide levels · Gastrointestinal

    Source sentences

    Summary
    and was not influenced by reduction of gastric acid.
    1 context sentence
    Summary · context
    Twenty young men divided into two groups participated in a five day training course with prolonged and heavy physical exercise, calorie supply deficiency and severe sleep deprivation.

    This result measures the body's own Vasoactive intestinal peptide (VIP, aviptadil). 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

    9 Oct 2026, 19:08 UTC

    Study results updated

  2. Version 1

    9 Oct 2026, 12:41 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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