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Study · Measured the body's own peptide · 1984

3 results

The distribution of neurons containing delta sleep-inducing peptide in the hippocampal formation.

Feldman SC, Kastin AJ

Brain research bulletin1 Dec 1984Cited by 7 (Europe PMC)

PMID6398116 (opens in a new tab)DOI10.1016/0361-9230(84)90240-5 (opens in a new tab)PepBankPUB-06398116
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 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. 01AnimalEndogenous levelAnimal study (in vivo)Other

    In the hippocampal formation, neurons containing immunoreactive DSIP were found in the subicular cortex next to CA1.

    In plain wordsIn the brain's hippocampal area, neurons with the body's own DSIP-like material were found next to CA1.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    Not applicableDSIP-immunoreactive neurons in the subicular cortex
    Study

    n: not reported in source

    brain tissue, immunocytochemistry
    Outcome group
    Endogenous peptide levels · Nervous system and cognition

    Source sentences

    Summary
    Neurons containing IDSIP were demonstrable in the subicular cortex immediately adjacent to CA1.
    1 context sentence
    Summary · context
    The distribution of neurons containing immunoreactive delta sleep-inducing peptide (IDSIP) in the hippocampal formation was investigated by immunocytochemistry.

    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. 02AnimalEndogenous levelAnimal study (in vivo)Other

    No specific DSIP staining was found in other parts of the hippocampal formation, including Ammon's Horn pyramidal layer and dentate gyrus.

    In plain wordsNo specific staining for the body's own DSIP was found in other hippocampal areas.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    No significant changeDSIP immunostaining in other parts of the hippocampal formation
    Study

    n: not reported in source

    brain tissue, immunocytochemistry
    Outcome group
    Endogenous peptide levels · Nervous system and cognition

    Source sentences

    Summary
    No specific staining was found in other parts of the hippocampal formation including the pyramidal layer of Ammon's Horn and the dentate gyrus.
    1 context sentence
    Summary · context
    The distribution of neurons containing immunoreactive delta sleep-inducing peptide (IDSIP) in the hippocampal formation was investigated by immunocytochemistry.

    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. 03AnimalEndogenous levelAnimal study (in vivo)Other

    Antisera to DSIP stained cells in temporal, parietal and frontal cortex and in the ventral forebrain, with numbers varying by antiserum.

    In plain wordsIn brain tissue, antibodies to the body's own DSIP stained cells in several cortical areas and the ventral forebrain.

    Peptide
    Delta sleep-inducing peptide (DSIP)
    Outcome
    Not applicableDSIP immunostaining of cells in cerebral cortex and ventral forebrain
    Study

    n: not reported in source

    brain tissue, immunocytochemistry
    Outcome group
    Endogenous peptide levels · Nervous system and cognition

    Source sentences

    Summary
    These three antisera also stained cells in the cerebral cortex-primarily temporal, parietal and frontal regions--as well as in the ventral forebrain, although the number of cells in each area varied somewhat with the different antisera.
    1 context sentence
    Summary · context
    The distribution of neurons containing immunoreactive delta sleep-inducing peptide (IDSIP) in the hippocampal formation was investigated by immunocytochemistry.

    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, 09:43 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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