Skip to content

Study · Animal study (in vivo) · rat · 1996

4 results

The effect of vasoactive intestinal peptide (VIP) on mast cell invasion/degranulation in testicular interstitium of immobilized + cold stressed and beta-endorphin-treated rats.

Tunçel N, Gürer F, Aral E, Uzuner K, Aydin Y, Bayçu C

Peptides1 Jan 1996Cited by 23 (Europe PMC)

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

4 results from studies that gave the peptide. No result from this study comes from people.

  1. 01AnimalAnimal study (in vivo)Efficacy outcome

    In stressed rats, VIP inhibited the proliferation of mast cells in the testicular interstitium.

    In plain wordsIn stressed rats, VIP reduced the growth in number of mast cells in the testis.

    Outcome
    DecreaseMast cell proliferation in testicular interstitium
    Study

    ratn: not reported in source

    Outcome group
    Immune response · Reproductive and sexual health
    Studied dose
    Dose not stated

    Source sentences

    Summary
    VIP inhibited proliferation and degranulation of mast cells
    2 context sentences
    Summary · context
    The effect of VIP on mast cell invasion/degranulation in testicular interstitium of stressed (immobilization and cold) and beta-endorphin-treated rats were investigated.
    Summary · context
    Because the most obvious effect of the stress on mast cell invasion/degranulation in testicular interstitium was observed in 45-day-old rats, the action of VIP in stressed and beta-endorphin-treated rats was only investigated at this age group.
  2. 02AnimalAnimal study (in vivo)Efficacy outcome

    In stressed rats, VIP inhibited the degranulation of mast cells in the testicular interstitium.

    In plain wordsIn stressed rats, VIP reduced the release of granules from mast cells in the testis.

    Outcome
    DecreaseMast cell degranulation in testicular interstitium
    Study

    ratn: not reported in source

    Outcome group
    Immune response · Reproductive and sexual health
    Studied dose
    Dose not stated

    Source sentences

    Summary
    VIP inhibited proliferation and degranulation of mast cells
    2 context sentences
    Summary · context
    The effect of VIP on mast cell invasion/degranulation in testicular interstitium of stressed (immobilization and cold) and beta-endorphin-treated rats were investigated.
    Summary · context
    Because the most obvious effect of the stress on mast cell invasion/degranulation in testicular interstitium was observed in 45-day-old rats, the action of VIP in stressed and beta-endorphin-treated rats was only investigated at this age group.
  3. 03AnimalAnimal study (in vivo)Efficacy outcome

    In stressed rats, VIP increased the heparin content of mast cells in the testicular interstitium.

    In plain wordsIn stressed rats, VIP raised the heparin content of testis mast cells.

    Outcome
    IncreaseHeparin content of mast cells
    Study

    ratn: not reported in source

    Outcome group
    Immune response · Reproductive and sexual health
    Studied dose
    Dose not stated

    Source sentences

    Summary
    increased heparin content of the cells
    2 context sentences
    Summary · context
    The effect of VIP on mast cell invasion/degranulation in testicular interstitium of stressed (immobilization and cold) and beta-endorphin-treated rats were investigated.
    Summary · context
    Because the most obvious effect of the stress on mast cell invasion/degranulation in testicular interstitium was observed in 45-day-old rats, the action of VIP in stressed and beta-endorphin-treated rats was only investigated at this age group.
  4. 04AnimalAnimal study (in vivo)Efficacy outcome

    In stressed rats, VIP protected Leydig cells from stress-related damage.

    In plain wordsIn stressed rats, VIP protected Leydig cells in the testis from stress damage.

    Outcome
    DecreaseLeydig cell damage under stress
    Study

    ratn: not reported in source

    Outcome group
    Sex hormones and fertility · Reproductive and sexual health
    Studied dose
    Dose not stated

    Source sentences

    Summary
    protected Leydig cells.
    3 context sentences
    Summary · context
    In some areas of testicular interstitium of stressed rats, there were aplasic and/or inactive Leydig cells.
    Summary · context
    The effect of VIP on mast cell invasion/degranulation in testicular interstitium of stressed (immobilization and cold) and beta-endorphin-treated rats were investigated.
    Summary · context
    Because the most obvious effect of the stress on mast cell invasion/degranulation in testicular interstitium was observed in 45-day-old rats, the action of VIP in stressed and beta-endorphin-treated rats was only investigated at this age group.

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.

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