HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Peroutka, S. J. Search for Related Content PubMed PubMed Citation Articles by Peroutka, S. J.

NEUROGENIC INFLAMMATION AND MIGRAINE: IMPLICATIONS FOR THE THERAPEUTICS

Synergia Pharma, Inc., 601 Gateway Boulevard, Suite 350, South San Francisco, CA 94080

Significant recent advances in molecular pharmacology have elucidated the molecular pathways involved in neurogenic inflammation (NI). The release of tachykinins and endothelin-3 (ET-3) from trigeminal neurons induces dural vascular permeability and vasodilatation via activation of tachykinin receptor 1 (Tacr1) and endothelin receptor type B (Ednrb) on endothelial cells. Endothelial cell receptor stimulation results in cellular contraction, leading to plasma protein extravasation (PPE), which is the most recognized physiological hallmark of NI, and nitric oxide–induced vasodilatation. By contrast, the release of calcitonin gene–related peptide (CGRP) from trigeminal neurons—also a key physiological component of NI—does not affect vascular permeability but does induce neurogenic vasodilatation (NV) via the direct, (i.e., endothelium-independent) relaxation of vascular smooth muscle. The molecular pharmacology of NI is discussed within the context of migraine research and assesses the putative role of the two key physiological components of NI (i.e., PPE and NV) in migraine pathophysiology. The data indicate that the PPE component of NI plays no significant role in migraine but that NV is likely to be involved in migraine pathophysiology.