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Study · Randomized controlled trial · n = 12 · 2008

5 results

Vasoactive intestinal peptide causes marked cephalic vasodilation, but does not induce migraine.

Rahmann A, Wienecke T, Hansen JM, Fahrenkrug J, Olesen J, Ashina M

Cephalalgia : an international journal of headache1 Mar 2008Cited by 206 (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 study5

5 results from studies that gave the peptide. 5 results from people.

  1. 01HumanRandomized controlled trialSafety outcome

    In people with migraine without aura, intravenous VIP infusion did not trigger a migraine attack in any participant.

    In plain wordsIn people with migraine, an infusion of VIP did not trigger a migraine attack in any of them.

    Outcome
    No significant changeMigraine attacks after VIP infusion
    Study

    n = 12

    Comparator
    Placebo
    Outcome group
    Pain · Nervous system and cognition
    Studied dose
    8 pmol kg(-1) min(-1) · intravenous infusionAs given in this study (human).

    Source sentences

    Summary
    None of the subjects reported a migraine attack after VIP infusion.
    1 context sentence
    Summary · context
    Twelve patients with migraine without aura were allocated to receive 8 pmol kg(-1) min(-1) VIP or placebo in a randomized, double-blind crossover study.
  2. 02HumanRandomized controlled trialSafety outcome

    In people with migraine without aura, VIP infusion caused a mild immediate headache that was greater than with placebo.

    In plain wordsIn people with migraine, VIP caused a mild headache right after the infusion, more than placebo did.

    Outcome
    IncreaseImmediate headache after VIP infusion
    Study

    n = 12

    Comparator
    Placebo
    Outcome group
    Pain · Nervous system and cognition
    Studied dose
    8 pmol kg(-1) min(-1) · intravenous infusionAs given in this study (human).

    Measurements

    Maximum headache score
    2 VRS
    VIP

    Source sentences

    Summary
    VIP induced a mild immediate headache (maximum 2 on VRS) compared with placebo (P = 0.005).
    1 context sentence
    Summary · context
    Twelve patients with migraine without aura were allocated to receive 8 pmol kg(-1) min(-1) VIP or placebo in a randomized, double-blind crossover study.
  3. 03HumanRandomized controlled trialSafety outcome

    In people with migraine without aura, delayed headache 3 to 11 hours after infusion did not differ significantly between VIP and placebo.

    In plain wordsIn people with migraine, headaches a few hours after the infusion were not significantly more frequent with VIP than with placebo.

    Outcome
    No significant changeDelayed headache after VIP infusion
    Study

    n = 12

    Comparator
    Placebo
    Outcome group
    Pain · Nervous system and cognition
    Studied dose
    8 pmol kg(-1) min(-1) · intravenous infusionAs given in this study (human).

    Measurements

    Patients with delayed headache
    3 patients
    VIP
    Patients with delayed headache
    2 patients
    placebo

    Source sentences

    Summary
    Three patients reported delayed headache (3-11 h after infusion) after VIP and two after placebo (P = 0.89).
    1 context sentence
    Summary · context
    Twelve patients with migraine without aura were allocated to receive 8 pmol kg(-1) min(-1) VIP or placebo in a randomized, double-blind crossover study.
  4. 04HumanRandomized controlled trialMechanism

    In people with migraine without aura, VIP infusion decreased mean blood flow velocity in the middle cerebral artery.

    In plain wordsIn people with migraine, VIP infusion slowed blood flow in a main brain artery.

    Outcome
    DecreaseMiddle cerebral artery blood flow velocity
    Study

    n = 12

    Outcome group
    Cerebral blood flow · Cardiovascular
    Studied dose
    8 pmol kg(-1) min(-1) · intravenous infusionAs given in this study (human).

    Measurements

    Change in V(mean MCA)
    −16.3%
    VIP

    Source sentences

    Summary
    V(mean MCA) decreased (16.3 +/- 5.9%)
    1 context sentence
    Summary · context
    Twelve patients with migraine without aura were allocated to receive 8 pmol kg(-1) min(-1) VIP or placebo in a randomized, double-blind crossover study.
  5. 05HumanRandomized controlled trialMechanism

    In people with migraine without aura, VIP infusion significantly increased the diameter of the superficial temporal artery.

    In plain wordsIn people with migraine, VIP infusion widened an artery in the temple.

    Outcome
    IncreaseSuperficial temporal artery diameter
    Study

    n = 12

    Outcome group
    Cerebral blood flow · Cardiovascular
    Studied dose
    8 pmol kg(-1) min(-1) · intravenous infusionAs given in this study (human).

    Measurements

    Change in STA diameter
    45.9%
    VIP

    Source sentences

    Summary
    diameter of STA increased significantly after VIP (45.9 +/- 13.9%).
    1 context sentence
    Summary · context
    Twelve patients with migraine without aura were allocated to receive 8 pmol kg(-1) min(-1) VIP or placebo in a randomized, double-blind crossover study.

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

    9 Oct 2026, 19:08 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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