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Study · Measured the body's own peptide · 1995

2 results

Human plasma DSIP decreases at the initiation of sleep at different circadian times.

Seifritz E, Müller MJ, Schönenberger GA, Trachsel L, Hemmeter U, Hatzinger M, Ernst A, Moore P, Holsboer-Trachsler E

Peptides1 Jan 1995Cited by 5 (Europe PMC)

PMID8745061 (opens in a new tab)DOI10.1016/0196-9781(95)02027-6 (opens in a new tab)PepBankPUB-08745061
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 levelObservational studyOther

    In healthy men, plasma DSIP-like immunoreactivity fell at the transition from wakefulness to sleep, in both evening sleep and morning recovery sleep after sleep deprivation.

    In plain wordsIn healthy men, the body's own DSIP-like levels in blood fell when sleep began, in evening sleep and in morning recovery sleep.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    DecreasePlasma DSIP-LI at sleep onset
    Study

    n = 7

    Outcome group
    Sleep · Sleep

    Source sentences

    Summary
    A significant decrease in plasma DSIP-LI was found at the transition from wakefulness to sleep in both evening sleep (2300 h) and morning recovery sleep (0500 h).
    1 context sentence
    Summary · context
    Nocturnal plasma delta sleep-inducing peptide-like immunoreactivity (DSIP-LI) was determined serially in seven healthy male subjects.

    This result measures the body's own Delta sleep-inducing peptide (DSIP). Nobody was given the peptide. It is not evidence about taking it.

  2. 02HumanEndogenous levelObservational studyOther

    In healthy men, plasma DSIP-like immunoreactivity showed no sleep stage specificity.

    In plain wordsIn healthy men, the body's own DSIP-like levels in blood did not depend on the sleep stage.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    No significant changePlasma DSIP-LI by sleep stage
    Study

    n = 7

    Outcome group
    Sleep · Sleep

    Source sentences

    Summary
    No sleep stage specificity was found.
    1 context sentence
    Summary · context
    Nocturnal plasma delta sleep-inducing peptide-like immunoreactivity (DSIP-LI) was determined serially in seven healthy male subjects.

    This result measures the body's own Delta sleep-inducing peptide (DSIP). 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

    10 Oct 2026, 08:55 UTC

    Study results updated

  2. Version 1

    9 Oct 2026, 03:04 UTC

    First added · source update from Europe PMC

Subjects

Terms as the source lists them.

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