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Study · Measured the body's own peptide · 1994

2 results

Plasma concentration of nine hormones and neurotransmitters during usual activities or constant bed rest for 34 H.

Schulz P, Lustenberger S, Degli Agosti R, Rivest RW

Chronobiology international1 Dec 1994Cited by 9 (Europe PMC)

PMID7895296 (opens in a new tab)DOI10.3109/07420529409057254 (opens in a new tab)PepBankPUB-07895296
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 five normal men, plasma DSIP concentrations showed no or minimal change between usual activity and constant bed rest.

    In plain wordsIn five healthy men, the body's own DSIP levels hardly changed between normal activity and bed rest.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    No significant changePlasma DSIP during activity versus bed rest
    Study

    n = 5

    Comparator
    Rest condition (34 h bed rest)
    Outcome group
    Endogenous peptide levels · Endocrine and hormones

    Source sentences

    Summary
    The temporal pattern and the absolute values of the concentrations of DSIP, P-DSIP, MHPG, GABA, and prolactin showed no or minimal changes during the two conditions.
    2 context sentences
    Summary · context
    Compared with the "rest" condition, the "activity" condition increased heart rate, temperature, LH, and TSH in most subjects, and cortisol in two of five subjects.
    Summary · context
    Thyroid-stimulating hormone (TSH), cortisol, melatonin, prolactin, luteinizing hormone (LH), delta-sleep-inducing peptide (DSIP), its phosphorylated form (P-DSIP), heart rate, and body temperature were measured every half hour during two 24-h periods in five normal men. tau-Amino-butyric acid (GABA)…

    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 levelNon-randomized trialOther

    In five normal men, plasma P-DSIP concentrations showed no or minimal change between usual activity and constant bed rest.

    In plain wordsIn five healthy men, the body's own phosphorylated DSIP levels hardly changed between normal activity and bed rest.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    No significant changePlasma phosphorylated DSIP (P-DSIP) during activity versus bed rest
    Study

    n = 5

    Comparator
    Rest condition (34 h bed rest)
    Outcome group
    Endogenous peptide levels · Endocrine and hormones

    Source sentences

    Summary
    The temporal pattern and the absolute values of the concentrations of DSIP, P-DSIP, MHPG, GABA, and prolactin showed no or minimal changes during the two conditions.
    2 context sentences
    Summary · context
    Compared with the "rest" condition, the "activity" condition increased heart rate, temperature, LH, and TSH in most subjects, and cortisol in two of five subjects.
    Summary · context
    Thyroid-stimulating hormone (TSH), cortisol, melatonin, prolactin, luteinizing hormone (LH), delta-sleep-inducing peptide (DSIP), its phosphorylated form (P-DSIP), heart rate, and body temperature were measured every half hour during two 24-h periods in five normal men. tau-Amino-butyric acid (GABA)…

    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

    9 Oct 2026, 18:17 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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