Tracheobronchial Particle Deposition and Clearance
- 1 September 1975
- journal article
- research article
- Published by Taylor & Francis in Archives of environmental health
- Vol. 30 (9), 457-462
- https://doi.org/10.1080/00039896.1975.10666750
Abstract
• Particle deposition and tracheobronchial clearance were measured in six pairs of male monozygotic twins, four of which were discordant for cigarette smoking. The fraction of an inhaled aerosol that deposited on the ciliated airways showed variations within twin pairs comparable with variations in repeated tests on a single subject, and significantly smaller (P<.001) than among tests on different subjects. Variations that did occur were consistent with differences in forced expiratory volume (FEV1.0) values. The proximal shift of aerosol deposition and reduced FEV1.0 values in smokers indicated that they had some degree of bronch α-constriction. Mucociliary clearance characteristics are qualitatively and quantitatively similar for nonsmoking and smoking concordant monozygotic twins, ie, comparable with repeated tests on a single individual, reflecting their constitutional similarity. With one exception, clearance curves for twin pairs discordant with respect to smoking were also qualitatively indistinguishable. Nonsmokers, however, had greater upper bronchial clearance rates than their smoking twins.Keywords
This publication has 17 references indexed in Scilit:
- Experimental studies of the total deposition of aerosol particles in the human respiratory tractJournal of Aerosol Science, 1973
- Withdrawal of Cigarette SmokingArchives of environmental health, 1973
- Bronchial deposition and clearance of aerosolsArchives of Internal Medicine, 1973
- Deposition Efficiency of Monodisperse Particles in Human Respiratory TractAihaj Journal, 1972
- Tracheobronchial Clearance in Smoking-Discordant TwinsArchives of environmental health, 1972
- TracheobronchiaI Clearance in TwinsArchives of environmental health, 1972
- Cigarette Smoking in ManArchives of environmental health, 1971
- Human Tracheobronchial Clearance StudiesArchives of environmental health, 1971
- The Characteristics of Bronchial Clearance in Humans and the Effects of Cigarette SmokingArchives of environmental health, 1969
- The Effect of Particle Size on the Regional Deposition of Inhaled Aerosols in the Human Respiratory TractAihaj Journal, 1969