Measurement of nasal potential difference in mild asthmatics

Nancy C. Chung, Beate Illek, Jonathan Widdicombe, Horst Fischer

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Study objective: To determine whether ion transport or barrier function across the nasal epithelium are altered in asthmatics. Design: In this pilot study, the nasal potential difference (PD) was measured using the technique established by Knowles and colleagues. A flowing agar bridge made electrical contact with the surface of the nasal epithelium along the floor of the nose. This bridge was referenced to a cutaneous electrode to determine the PD across the nasal epithelium. Changes in nasal PD in response to amiloride, chloride-free medium, and chloride-free medium containing isoproterenol were measured, and responses of asthmatics and healthy control subjects were compared. Participants: Measurements were made in eight adult nonasthmatic subjects and 6 adult asthmatic subjects. All asthmatics had mild intermittent asthma. Measurements and results: Continuous measurements of nasal PD were obtained while the nasal surface was perfused consecutively with saline solution (NaCl-containing solution), saline solution plus 100 μmol/L amiloride, chloride-free solution plus amiloride, and chloride-free solution with amiloride plus 10 μmol/L isoproterenol (a β-adrenergic agonist). No significant differences in baseline PD or change in PD in response to changes in perfusate were found between the two groups. Conclusions: Our results suggest that ion transport and barrier function of patients with mild asthma are normal. Therefore, by contrast to cystic fibrosis, changes in salt and water transport across airway epithelium may not contribute to accumulation of mucous secretions in asthma.

Original languageEnglish (US)
Pages (from-to)1467-1471
Number of pages5
JournalChest
Volume123
Issue number5
DOIs
StatePublished - May 1 2003

Fingerprint

Nose
Amiloride
Nasal Mucosa
Chlorides
Asthma
Ion Transport
Isoproterenol
Sodium Chloride
Adrenergic Agonists
Cystic Fibrosis
Agar
Healthy Volunteers
Electrodes
Epithelium
Salts
Skin
Water

Keywords

  • Airway epithelial ion transport
  • Cystic fibrosis
  • Mucous secretions
  • Reactive airways disease

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine

Cite this

Measurement of nasal potential difference in mild asthmatics. / Chung, Nancy C.; Illek, Beate; Widdicombe, Jonathan; Fischer, Horst.

In: Chest, Vol. 123, No. 5, 01.05.2003, p. 1467-1471.

Research output: Contribution to journalArticle

Chung, Nancy C. ; Illek, Beate ; Widdicombe, Jonathan ; Fischer, Horst. / Measurement of nasal potential difference in mild asthmatics. In: Chest. 2003 ; Vol. 123, No. 5. pp. 1467-1471.
@article{3a1f3a160f6046d2a88581919fd7d795,
title = "Measurement of nasal potential difference in mild asthmatics",
abstract = "Study objective: To determine whether ion transport or barrier function across the nasal epithelium are altered in asthmatics. Design: In this pilot study, the nasal potential difference (PD) was measured using the technique established by Knowles and colleagues. A flowing agar bridge made electrical contact with the surface of the nasal epithelium along the floor of the nose. This bridge was referenced to a cutaneous electrode to determine the PD across the nasal epithelium. Changes in nasal PD in response to amiloride, chloride-free medium, and chloride-free medium containing isoproterenol were measured, and responses of asthmatics and healthy control subjects were compared. Participants: Measurements were made in eight adult nonasthmatic subjects and 6 adult asthmatic subjects. All asthmatics had mild intermittent asthma. Measurements and results: Continuous measurements of nasal PD were obtained while the nasal surface was perfused consecutively with saline solution (NaCl-containing solution), saline solution plus 100 μmol/L amiloride, chloride-free solution plus amiloride, and chloride-free solution with amiloride plus 10 μmol/L isoproterenol (a β-adrenergic agonist). No significant differences in baseline PD or change in PD in response to changes in perfusate were found between the two groups. Conclusions: Our results suggest that ion transport and barrier function of patients with mild asthma are normal. Therefore, by contrast to cystic fibrosis, changes in salt and water transport across airway epithelium may not contribute to accumulation of mucous secretions in asthma.",
keywords = "Airway epithelial ion transport, Cystic fibrosis, Mucous secretions, Reactive airways disease",
author = "Chung, {Nancy C.} and Beate Illek and Jonathan Widdicombe and Horst Fischer",
year = "2003",
month = "5",
day = "1",
doi = "10.1378/chest.123.5.1467",
language = "English (US)",
volume = "123",
pages = "1467--1471",
journal = "Chest",
issn = "0012-3692",
publisher = "American College of Chest Physicians",
number = "5",

}

TY - JOUR

T1 - Measurement of nasal potential difference in mild asthmatics

AU - Chung, Nancy C.

AU - Illek, Beate

AU - Widdicombe, Jonathan

AU - Fischer, Horst

PY - 2003/5/1

Y1 - 2003/5/1

N2 - Study objective: To determine whether ion transport or barrier function across the nasal epithelium are altered in asthmatics. Design: In this pilot study, the nasal potential difference (PD) was measured using the technique established by Knowles and colleagues. A flowing agar bridge made electrical contact with the surface of the nasal epithelium along the floor of the nose. This bridge was referenced to a cutaneous electrode to determine the PD across the nasal epithelium. Changes in nasal PD in response to amiloride, chloride-free medium, and chloride-free medium containing isoproterenol were measured, and responses of asthmatics and healthy control subjects were compared. Participants: Measurements were made in eight adult nonasthmatic subjects and 6 adult asthmatic subjects. All asthmatics had mild intermittent asthma. Measurements and results: Continuous measurements of nasal PD were obtained while the nasal surface was perfused consecutively with saline solution (NaCl-containing solution), saline solution plus 100 μmol/L amiloride, chloride-free solution plus amiloride, and chloride-free solution with amiloride plus 10 μmol/L isoproterenol (a β-adrenergic agonist). No significant differences in baseline PD or change in PD in response to changes in perfusate were found between the two groups. Conclusions: Our results suggest that ion transport and barrier function of patients with mild asthma are normal. Therefore, by contrast to cystic fibrosis, changes in salt and water transport across airway epithelium may not contribute to accumulation of mucous secretions in asthma.

AB - Study objective: To determine whether ion transport or barrier function across the nasal epithelium are altered in asthmatics. Design: In this pilot study, the nasal potential difference (PD) was measured using the technique established by Knowles and colleagues. A flowing agar bridge made electrical contact with the surface of the nasal epithelium along the floor of the nose. This bridge was referenced to a cutaneous electrode to determine the PD across the nasal epithelium. Changes in nasal PD in response to amiloride, chloride-free medium, and chloride-free medium containing isoproterenol were measured, and responses of asthmatics and healthy control subjects were compared. Participants: Measurements were made in eight adult nonasthmatic subjects and 6 adult asthmatic subjects. All asthmatics had mild intermittent asthma. Measurements and results: Continuous measurements of nasal PD were obtained while the nasal surface was perfused consecutively with saline solution (NaCl-containing solution), saline solution plus 100 μmol/L amiloride, chloride-free solution plus amiloride, and chloride-free solution with amiloride plus 10 μmol/L isoproterenol (a β-adrenergic agonist). No significant differences in baseline PD or change in PD in response to changes in perfusate were found between the two groups. Conclusions: Our results suggest that ion transport and barrier function of patients with mild asthma are normal. Therefore, by contrast to cystic fibrosis, changes in salt and water transport across airway epithelium may not contribute to accumulation of mucous secretions in asthma.

KW - Airway epithelial ion transport

KW - Cystic fibrosis

KW - Mucous secretions

KW - Reactive airways disease

UR - http://www.scopus.com/inward/record.url?scp=0037879074&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037879074&partnerID=8YFLogxK

U2 - 10.1378/chest.123.5.1467

DO - 10.1378/chest.123.5.1467

M3 - Article

C2 - 12740262

AN - SCOPUS:0037879074

VL - 123

SP - 1467

EP - 1471

JO - Chest

JF - Chest

SN - 0012-3692

IS - 5

ER -