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Study · Measured the body's own peptide · 1998

2 results

Gender-specific apposition between vasoactive intestinal peptide-containing axons and gonadotrophin-releasing hormone-producing neurons in the rat.

Horvath TL, Cela V, van der Beek EM

Brain research1 Jun 1998Cited by 52 (Europe PMC)

PMID9622650 (opens in a new tab)DOI10.1016/s0006-8993(98)00208-x (opens in a new tab)PepBankPUB-09622650
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: CC BY-NC-ND. 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. 01AnimalEndogenous levelAnimal study (in vivo)Other

    In rats, the number of the body's own VIP boutons ending on GnRH neurons was higher in females than in males.

    In plain wordsIn rats, females had more natural VIP nerve endings on GnRH neurons than males.

    Peptide
    Vasoactive intestinal peptide (VIP, aviptadil)
    Outcome
    IncreaseNumber of VIP boutons terminating on GnRH neurons
    Study

    ratn: not reported in source

    Comparator
    Male rats
    Outcome group
    Sex hormones and fertility · Endocrine and hormones

    Source sentences

    Summary
    the number of VIP boutons that terminate on GnRH neurons
    2 context sentences
    Summary · context
    were higher in females than in males.
    Summary · context
    Light microscopic double labeling immunocytochemistry for vasoactive intestinal peptide (VIP) and gonadotrophin-releasing hormone (GnRH) was carried out on the hypothalami of male and female rats.

    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

    In rats, a higher percentage of GnRH neurons were contacted by the body's own VIP axons in females than in males.

    In plain wordsIn rats, a larger share of GnRH neurons had natural VIP contacts in females than in males.

    Peptide
    Vasoactive intestinal peptide (VIP, aviptadil)
    Outcome
    IncreasePercentage of GnRH neurons contacted by VIP axons
    Study

    ratn: not reported in source

    Comparator
    Male rats
    Outcome group
    Sex hormones and fertility · Endocrine and hormones

    Source sentences

    Summary
    the percentage of GnRH neurons contacted by VIP axons were higher in females than in males.
    1 context sentence
    Summary · context
    Light microscopic double labeling immunocytochemistry for vasoactive intestinal peptide (VIP) and gonadotrophin-releasing hormone (GnRH) was carried out on the hypothalami of male and female rats.

    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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