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Study · Measured the body's own peptide · 1988

4 results

A population of very small striatal neurons in the cat displays vasoactive intestinal polypeptide immunoreactivity.

Vincent SR, Reiner PB

Neuroscience letters1 Jul 1988Cited by 3 (Europe PMC)

PMID2901699 (opens in a new tab)DOI10.1016/0304-3940(88)90539-3 (opens in a new tab)PepBankPUB-02901699
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 study4

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

Natural levels measured4

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

    VIP-immunoreactive cells were present in the cat striatum, shown with a monoclonal antibody raised against porcine VIP.

    In plain wordsIn cats, the body's own VIP was found in cells of the striatum, a brain area.

    Peptide
    Vasoactive intestinal peptide (VIP, aviptadil)
    Outcome
    Not applicableVIP-immunoreactive cells in striatum
    Study

    catn: not reported in source

    Striatum tissue
    Outcome group
    Endogenous peptide levels · Nervous system and cognition

    Source sentences

    Summary
    Cells displaying vasoactive intestinal polypeptide (VIP) immunoreactivity were demonstrated in the feline striatum using a monoclonal antibody raised against natural porcine VIP.

    This result measures the body's own Vasoactive intestinal peptide (VIP, aviptadil). Nobody was given the peptide. It is not evidence about taking it.

  2. 02AnimalEndogenous levelAnimal study (in vivo)Other

    VIP-immunoreactive neurons in the cat striatum were very small (8 microns diameter) bipolar and multipolar cells.

    In plain wordsIn cats, cells that contain the body's own VIP in the striatum were very small.

    Peptide
    Vasoactive intestinal peptide (VIP, aviptadil)
    Outcome
    Not applicableSize and shape of VIP-immunoreactive striatal neurons
    Study

    catn: not reported in source

    Striatum tissue
    Outcome group
    Endogenous peptide levels · Nervous system and cognition

    Measurements

    cell diameter
    8 microns
    VIP-immunoreactive striatal neurons

    Source sentences

    Summary
    The VIP-immunoreactive neurons in the cat striatum were very small, (8 microns diameter) bipolar and multipolar cells.

    This result measures the body's own Vasoactive intestinal peptide (VIP, aviptadil). Nobody was given the peptide. It is not evidence about taking it.

  3. 03AnimalEndogenous levelAnimal study (in vivo)Other

    In the cat caudate-putamen, VIP-positive neurons were more numerous than cholinergic neurons but less common than somatostatin-immunoreactive cells.

    In plain wordsIn cats, striatal cells with the body's own VIP were more common than cholinergic cells and less common than somatostatin cells.

    Peptide
    Vasoactive intestinal peptide (VIP, aviptadil)
    Outcome
    Not applicableNumber of VIP-positive neurons compared with other striatal neurons
    Study

    catn: not reported in source

    Striatum tissue
    Outcome group
    Endogenous peptide levels · Nervous system and cognition

    Source sentences

    Summary
    The VIP-positive neurons were more numerous than the cholinergic neurons but less common than the somatostatin-immunoreactive cells in the cat caudate-putamen.

    This result measures the body's own Vasoactive intestinal peptide (VIP, aviptadil). Nobody was given the peptide. It is not evidence about taking it.

  4. 04AnimalEndogenous levelAnimal study (in vivo)Other

    VIP-immunoreactive cells in the cat striatum lay mainly in the matrix and tended to avoid enkephalin-immunoreactive patches.

    In plain wordsIn cats, cells with the body's own VIP sat mostly in the striatal matrix, away from enkephalin patches.

    Peptide
    Vasoactive intestinal peptide (VIP, aviptadil)
    Outcome
    Not applicableLocation of VIP-immunoreactive cells in striatum
    Study

    catn: not reported in source

    Striatum tissue
    Outcome group
    Endogenous peptide levels · Nervous system and cognition

    Source sentences

    Summary
    The VIP-immunoreactive cells were localized predominantly in the striatal matrix and tended to avoid enkephalin-immunoreactive patches.

    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

    12 Oct 2026, 12:58 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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