The Effect of Nebulised Hypertonic Saline on Human Bronchial Epithelium

Overview

Journal Eur Respir J

Specialty Pulmonary Medicine

Date 2018 Mar 31

PMID 29599187

Citations 29

Authors

Jennifer L Goralski

Dan Wu

William R Thelin

Richard C Boucher

Brian Button

Affiliations

Soon will be listed here.

Abstract

Inhaled hypertonic saline (HS) is an effective therapy for muco-obstructive lung diseases. However, the mechanism of action and principles pertinent to HS administration remain unclear.An system aerosolised HS to epithelial cells at rates comparable to conditions. Airway surface liquid (ASL) volume and cell height responses were measured by confocal microscopy under normal and hyperconcentrated mucus states.Aerosolised HS produced a rapid increase in ASL height and decrease in cell height. Added ASL volume was quickly reabsorbed following termination of nebulisation, although cell height did not recover within the same time frame. ASL volume responses to repeated HS administrations were blunted, but could be restored by a hypotonic saline bolus interposed between HS administrations. HS-induced ASL hydration was prolonged with hyperconcentrated mucus on the airway surface, with more modest reductions in cell volume.Aerosolised HS produced osmotically induced increases in ASL height that were limited by active sodium absorption and cell volume-induced reductions in cell water permeability. Mucus on airway surfaces prolonged the effect of HS mucus-dependent osmotic forces, suggesting that the duration of action of HS is increased in patients with hyperconcentrated mucus.

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