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Study · Measured the body's own peptide · 2012

3 results

Vasoactive intestinal peptide and its receptors in human ovarian cortical follicles.

Gabbay-Benziv R, Ao A, Fisch B, Zhang L, Oron G, Kessler-Icekson G, Ben-Haroush A, Krissi H, Abir R

PloS one18 May 2012Cited by 4 (Europe PMC)

Summary

BackgroundOvarian cryopreservation is one option for fertility preservation in patients with cancer. The danger of reseeding malignancies could be eliminated by in vitro maturation of primordial follicles from the frozen-thawed tissue. However, the development of this system is hindered by uncertainties regarding factors that activate primordial follicles. Neuronal growth factors such as vasoactive intestinal peptide (VIP) play important roles in early mammalian folliculogenesis. There are no data on the expression of VIP and its vasoactive intestinal peptide pituitary adenylate cyclase 1 and 2 receptors (VPAC1-R and VPAC2-R) in human preantral follicles.Methodology/principal findingsTissue samples from 14 human fetal ovaries and 40 ovaries from girls/women were prepared to test for the expression of VIP, VPAC1-R, and VPAC2-R on the protein (immunohistochemisty) and mRNA (reverse transcription polymerase chain reaction) levels. Immunohistochemistry staining was mostly weak, especially in fetal samples. The VIP protein was identified in oocytes and granulosa cells (GCs) in the fetal samples from 22 gestational weeks (GW) onwards. In girls/women, VIP follicular staining (oocytes and GCs) was identified in 45% of samples. VPAC1-R protein was identified in follicles in all fetal samples from 22GW onwards and in 63% of the samples from girls/women (GC staining only in 40%). VPAC2-R protein was identified in follicles in 33% of fetal samples and 47% of the samples from girls/women. The mRNA transcripts for VIP, VPAC1-R, and VPAC2-R were identified in ovarian extracts from fetuses and women.ConclusionsVIP and its two receptors are expressed in human ovarian preantral follicles. However, their weak staining suggests they have limited roles in early follicular growth. To elucidate if VIP activates human primordial follicles, it should be added to the culture medium.
CC BYText from Europe PMC. Highlighted sentences are the source of results.

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 ovaries from girls and women, VIP follicular staining was identified in 45% of samples.

    In plain wordsIn ovaries of girls and women, the body's own VIP was found in follicles in 45% of samples.

    Outcome
    Not applicableVIP follicular staining in ovaries of girls and women
    Study

    n = 40

    Outcome group
    Endogenous peptide levels · Reproductive and sexual health

    Source sentences

    Summary
    In girls/women, VIP follicular staining (oocytes and GCs) was identified in 45% of samples.
    1 context sentence
    Summary · context
    Tissue samples from 14 human fetal ovaries and 40 ovaries from girls/women were prepared to test for the expression of VIP, VPAC1-R, and VPAC2-R on the protein (immunohistochemisty) and mRNA (reverse transcription polymerase chain reaction) levels.

    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. 02HumanEndogenous levelObservational studyOther

    In 14 human fetal ovaries, VIP protein was identified in oocytes and granulosa cells from 22 gestational weeks onwards.

    In plain wordsIn human fetal ovaries, the body's own VIP was found in egg cells and supporting cells from week 22 onwards.

    Outcome
    Not applicableVIP protein in fetal ovarian follicles
    Study

    n = 14

    Outcome group
    Endogenous peptide levels · Reproductive and sexual health

    Source sentences

    Summary
    The VIP protein was identified in oocytes and granulosa cells (GCs) in the fetal samples from 22 gestational weeks (GW) onwards.
    1 context sentence
    Summary · context
    Tissue samples from 14 human fetal ovaries and 40 ovaries from girls/women were prepared to test for the expression of VIP, VPAC1-R, and VPAC2-R on the protein (immunohistochemisty) and mRNA (reverse transcription polymerase chain reaction) levels.

    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. 03HumanEndogenous levelObservational studyOther

    VIP mRNA transcripts were identified in ovarian extracts from human fetuses and women.

    In plain wordsThe genetic message for the body's own VIP was found in human ovarian tissue from fetuses and women.

    Outcome
    Not applicableVIP mRNA in ovarian extracts
    Study

    n: not reported in source

    Outcome group
    Endogenous peptide levels · Reproductive and sexual health

    Source sentences

    Summary
    The mRNA transcripts for VIP, VPAC1-R, and VPAC2-R
    2 context sentences
    Summary · context
    were identified in ovarian extracts from fetuses and women.
    Summary · context
    Tissue samples from 14 human fetal ovaries and 40 ovaries from girls/women were prepared to test for the expression of VIP, VPAC1-R, and VPAC2-R on the protein (immunohistochemisty) and mRNA (reverse transcription polymerase chain reaction) levels.

    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, 12:40 UTC

    First added · source update from Europe PMC

Subjects

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