The Effects of a Long-lasting Infusion of Vasoactive Intestinal Peptide (VIP) on Headache, Cranial Hemodynamic and Autonomic Symptoms in Healthy Volunteers

Summary

Vasoactive intestinal peptide (VIP) is a peptide of 28 amino acid residues that belongs to the glucagon/secretin superfamily of peptides. It is produced in different regions of the nervous system, including the brain, trigeminovascular system and several autonomic nerves. Once released from neurons, it acts on vasoactive intestinal peptide receptor 1 (VPAC1), vasoactive intestinal peptide receptor 2 (VPAC2) and pituitary adenylate cyclase-activating polypeptide type I receptor (PAC1), by mediating smooth muscle relaxation, vasodilation and water secretion. Along with other neuropeptides, such as calcitonin gene-related peptide (CGRP) and pituitary adenylate cyclase-activating polypeptide (PACAP), it is released from the trigeminal afferents and exerts a strong vasodilating activity on the cranial vasculature, sharing the activation of adenylate cyclase. Especially, it shares 70% structure with PACAP and acts on the same receptors. But, unlike it, VIP cannot induce a long-lasting vasodilation and has a modest capability to induce migraine attacks. Whether a long-lasting infusion of VIP may induce a prolonged vasodilation in the cerebral vessels and migraine, as a twenty-minute infusion of PACAP, is unknown.

Timeline

Start

2019-06-14

Primary completion

2020-06-30

Completion

2020-06-30

Publications

• Pellesi L, Al-Karagholi MA, De Icco R, Chaudhry BA, Lopez CL, Snellman J, Hannibal J, Amin FM, Ashina M. Plasma Levels of CGRP During a 2-h Infusion of VIP in Healthy Volunteers and Patients With Migraine: An Exploratory Study. Front Neurol. 2022 Apr 1;13:871176. doi: 10.3389/fneur.2022.871176. eCollection 2022.
• Pellesi L, Al-Karagholi MA, Chaudhry BA, Lopez CL, Snellman J, Hannibal J, Amin FM, Ashina M. Two-hour infusion of vasoactive intestinal polypeptide induces delayed headache and extracranial vasodilation in healthy volunteers. Cephalalgia. 2020 Oct;40(11):1212-1223. doi: 10.1177/0333102420937655. Epub 2020 Jun 27.

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