Skip to content

Study · Measured the body's own peptide · 1998

3 results

High delta sleep-inducing peptide-like immunoreactivity in plasma in suicidal patients with major depressive disorder.

Westrin A, Ekman R, Träskman-Bendz L

Biological psychiatry1 May 1998Cited by 8 (Europe PMC)

PMID9606527 (opens in a new tab)DOI10.1016/s0006-3223(97)00254-0 (opens in a new tab)PepBankPUB-09606527
Publisher pagePubMedAsk about this study
Jump to 3 results

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 study3

No result from this study comes from a test of the peptide.

Natural levels measured3

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 suicide attempters with major depressive disorder, plasma DSIP-like immunoreactivity was significantly elevated.

    In plain wordsIn suicide attempters with major depression, the body's own DSIP-like substance was higher in blood.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    IncreasePlasma DSIP-like immunoreactivity in MDD patients
    Study

    n: not reported in source

    Outcome group
    Endogenous peptide levels · Mental health and mood

    Source sentences

    Summary
    significantly elevated DSIP-LI levels in MDD patients (p < .005)
    1 context sentence
    Summary · context
    Plasma-DSIP and serum cortisol were measured before and after dexamethasone intake in 34 suicide attempters and in healthy age- and sex-matched controls.

    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 controls, pre-dexamethasone serum cortisol correlated significantly with pre-dexamethasone plasma DSIP-like immunoreactivity.

    In plain wordsIn healthy people, the body's own DSIP-like substance was linked to cortisol levels before the dexamethasone test.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    Not applicableCorrelation of pre-dexamethasone cortisol with DSIP-like immunoreactivity in healthy controls
    Study

    n: not reported in source

    Outcome group
    Endogenous peptide levels · Mental health and mood

    Source sentences

    Summary
    a significant correlation between predexamethasone cortisol and predexamethasone DSIP-LI levels in healthy controls.
    1 context sentence
    Summary · context
    Plasma-DSIP and serum cortisol were measured before and after dexamethasone intake in 34 suicide attempters and in healthy age- and sex-matched controls.

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

  3. 03HumanEndogenous levelObservational studyOther

    After dexamethasone, plasma DSIP-like immunoreactivity increased in subjects with low baseline levels and decreased in subjects with high baseline levels.

    In plain wordsAfter dexamethasone, the body's own DSIP-like substance rose in people with low starting levels and fell in people with high starting levels.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    MixedPost-dexamethasone change in DSIP-like immunoreactivity
    Study

    n: not reported in source

    Outcome group
    Endogenous peptide levels · Mental health and mood

    Source sentences

    Summary
    Postdexamethasone DSIP-LI levels increased in subjects with low predexamethasone DSIP-LI levels, whereas they decreased in subjects with high predexamethasone DSIP-LI levels.
    1 context sentence
    Summary · context
    Plasma-DSIP and serum cortisol were measured before and after dexamethasone intake in 34 suicide attempters and in healthy age- and sex-matched controls.

    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.

PepBank is a research reference. Talk to a doctor before you use any peptide.