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. 1987 Nov 13;148(3):1440-5.
doi: 10.1016/s0006-291x(87)80293-0.

Selective localization of vasoactive intestinal peptide and substance P in human eosinophils

J Aliakbari  1 , S P Sreedharan, C W Turck, E J Goetzl
Affiliations

Selective localization of vasoactive intestinal peptide and substance P in human eosinophils

J Aliakbari et al. Biochem Biophys Res Commun. .

Abstract

Extracts of purified human eosinophils had a mean concentration of 72 fmol of immunoreactive vasoactive intestinal peptide and 21 fmol of substance P per 10(7) eosinophils, that were significantly higher than the content of immunoreactivity of the same neuropeptides in neutrophils, mononuclear leukocytes, and platelets. In contrast, the lower concentrations of calcitonin gene-related peptide and somatostatin were similar in extracts of all leukocytes. Chromatography of the peptides from eosinophils confirmed their identity with vasoactive intestinal peptide and substance P from neuroendocrine sources. Stores of some neuropeptides may endow eosinophils with unique roles in host defense and hypersensitivity reactions.

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