PMID: 1637097Jun 30, 1992Paper

Evidence that calcitonin gene-related peptide contributes to inflammation in the skin and joint

Annals of the New York Academy of Sciences
S D BrainP Wilsoncroft


Calcitonin gene-related peptide produces dose-related vasodilatation after intradermal injection in several species. In the present study, CGRP increased blood flow in rabbit skin but had no direct effect on edema formation in rat or rabbit skin or in the rat knee joint. However, CGRP produced significant potentiation of edema formation when co-injected with histamine, a potent mediator of increased vascular permeability. Therefore, release of CGRP from stimulated C-fiber nerves may contribute to the vascular changes that are an integral part of the inflammatory process. The activity of the putative CGRP antagonist CGRP8-37 (300 pmol) against CGRP was also investigated in rabbit and rat skin. Whereas it was found to selectively antagonize the effects of CGRP in rabbit skin, the antagonist produced edema in rat skin at the same dose. Thus, CGRP8-37 may be used in the rabbit to study the effects of endogenously released CGRP, but caution is required when this antagonist is used in the rat.


May 1, 1991·British Journal of Pharmacology·F Y Lam, W R Ferrell
Sep 28, 1990·Biochemical and Biophysical Research Communications·S M GardinerB Hughes
Jan 3, 1985·Nature·S D BrainI MacIntyre

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