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Study · Measured the body's own peptide · 1987

1 result

Substance P and vasoactive intestinal peptide in serotonin-induced nasal secretions in normal subjects.

Tønnesen P, Schaffalitzky de Muckadell OB

Allergy1 Feb 1987Cited by 13 (Europe PMC)

PMID2438962 (opens in a new tab)DOI10.1111/j.1398-9995.1987.tb02373.x (opens in a new tab)PepBankPUB-02438962
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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. 01HumanEndogenous levelNon-randomized trialOther

    In normal subjects, vasoactive intestinal peptide was found at low concentration in 37% of serotonin-induced nasal secretions, with a median of 0 pmol/l.

    In plain wordsIn healthy people, the body's own VIP was found at low levels in about a third of nasal secretions.

    Peptide
    Vasoactive intestinal peptide (VIP, aviptadil)
    Outcome
    Not applicableVIP concentration in nasal secretions
    Study

    n: not reported in source

    Outcome group
    Endogenous peptide levels · Respiratory

    Measurements

    Median VIP concentration
    0 pmol/l
    nasal secretions
    VIP concentration range
    0 to 50 pmol/l
    nasal secretions
    Secretions with detectable VIP
    37%
    nasal secretions

    Source sentences

    Summary
    Vasoactive intestinal peptide was found in low concentration in 37% of the secretions with a median concentration of 0 pmol/l (range 0-50.0).
    1 context sentence
    Summary · context
    Serotonin nasal challenge was performed in 14 normal subjects 15 min after intranasal pretreatment (double-blind) with atropine, methysergide, chlorpheniramine or isotonic saline.

    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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