Effect of human eosinophil major basic protein on ion transport in dog tracheal epithelium

David Jacoby, I. F. Ueki, J. H. Widdicombe, D. A. Loegering, G. J. Gleich, J. A. Nadel

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Eosinophil major basic protein (MBP) is a granule-associated cytotoxic protein found in sputum and deposited on airway tissues of patients with acute asthma. We therefore studied the effect of human MBP on ion transport in dog tracheal epithelium. We mounted the posterior tracheal membranes of mongrel dogs in Ussing chambers and measured potential differences across the membranes and short-circuit current. Using 22Na+ and 36Cl- as tracers, we determined net ion movements. The addition of MBP (5 x 10-6 M) to the mucosal, but not to the serosal, side of the membranes produced an increase in short-circuit current from 2.25 ± 0.19 (mean ± SE) to 2.78 ± 0.23 μEq·cm-2h-1 (p-2h-1 (p-5 M) attenuated, but did not abolish, the increase in short-circuit current. After exposure to MBP, prostaglandin E2 release into the serosal bathing solution increased from 10.0 ± 4.2 to 17.0 ± 6.9 ng·cm-2h-1 (p2 production and chloride secretion by dog tracheal epithelium. Thus, eosinophils in the airways, through release of MBP, may affect mucociliary clearance by changing the volume and composition of respiratory tract fluid.

Original languageEnglish (US)
Pages (from-to)13-16
Number of pages4
JournalAmerican Review of Respiratory Disease
Volume137
Issue number1
StatePublished - 1988
Externally publishedYes

Fingerprint

Ion Transport
Epithelium
Dogs
Proteins
Membranes
Eosinophil Major Basic Protein
Mucociliary Clearance
Sputum
Dinoprostone
Eosinophils
Respiratory System
Chlorides
Asthma
human PRG2 protein
Ions

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

Cite this

Jacoby, D., Ueki, I. F., Widdicombe, J. H., Loegering, D. A., Gleich, G. J., & Nadel, J. A. (1988). Effect of human eosinophil major basic protein on ion transport in dog tracheal epithelium. American Review of Respiratory Disease, 137(1), 13-16.

Effect of human eosinophil major basic protein on ion transport in dog tracheal epithelium. / Jacoby, David; Ueki, I. F.; Widdicombe, J. H.; Loegering, D. A.; Gleich, G. J.; Nadel, J. A.

In: American Review of Respiratory Disease, Vol. 137, No. 1, 1988, p. 13-16.

Research output: Contribution to journalArticle

Jacoby, D, Ueki, IF, Widdicombe, JH, Loegering, DA, Gleich, GJ & Nadel, JA 1988, 'Effect of human eosinophil major basic protein on ion transport in dog tracheal epithelium', American Review of Respiratory Disease, vol. 137, no. 1, pp. 13-16.
Jacoby, David ; Ueki, I. F. ; Widdicombe, J. H. ; Loegering, D. A. ; Gleich, G. J. ; Nadel, J. A. / Effect of human eosinophil major basic protein on ion transport in dog tracheal epithelium. In: American Review of Respiratory Disease. 1988 ; Vol. 137, No. 1. pp. 13-16.
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