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> Aaltonen H. Laura >
Altered deposition ...
Altered deposition of inhaled nanoparticles in subjects with chronic obstructive pulmonary disease
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- Jakobsson, Jonas K F (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Ergonomi och aerosolteknologi,Institutionen för designvetenskaper,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Ergonomics and Aerosol Technology,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Aaltonen, H Laura (författare)
- Lund University,Lunds universitet,Diagnostisk radiologi, Malmö,Forskargrupper vid Lunds universitet,Radiology Diagnostics, Malmö,Lund University Research Groups
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- Nicklasson, Hanna (författare)
- Lund University,Lunds universitet,Medicinsk strålningsfysik, Malmö,Forskargrupper vid Lunds universitet,Medical Radiation Physics, Malmö,Lund University Research Groups
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- Gudmundsson, Anders (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Ergonomi och aerosolteknologi,Institutionen för designvetenskaper,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Ergonomics and Aerosol Technology,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Rissler, Jenny (författare)
- Lunds universitet,RISE,Yta, process och formulering,Lund University, Sweden,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Ergonomi och aerosolteknologi,Institutionen för designvetenskaper,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Ergonomics and Aerosol Technology,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH,SP Swedish National Testing and Research Institute
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- Wollmer, Per (författare)
- Lund University,Lunds universitet,Klinisk fysiologi och nuklearmedicin, Malmö,Forskargrupper vid Lunds universitet,Clinical Physiology and Nuclear Medicine, Malmö,Lund University Research Groups
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- Löndahl, Jakob (författare)
- Lund University,Lunds universitet,NanoLund: Centre for Nanoscience,Annan verksamhet, LTH,Lunds Tekniska Högskola,Ergonomi och aerosolteknologi,Institutionen för designvetenskaper,Institutioner vid LTH,Other operations, LTH,Faculty of Engineering, LTH,Ergonomics and Aerosol Technology,Department of Design Sciences,Departments at LTH,Faculty of Engineering, LTH
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(creator_code:org_t)
- 2018-08-06
- 2018
- Engelska.
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Ingår i: BMC Pulmonary Medicine. - : BioMed Central Ltd.. - 1471-2466. ; 18:1
- Relaterad länk:
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https://doi.org/10.1...
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https://bmcpulmmed.b...
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http://dx.doi.org/10... (free)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- Background: Respiratory tract deposition of airborne particles is a key link to understand their health impact. Experimental data are limited for vulnerable groups such as individuals with respiratory diseases. The aim of this study is to investigate the differences in lung deposition of nanoparticles in the distal lung for healthy subjects and subjects with respiratory disease. Methods: Lung deposition of nanoparticles (50 and 100 nm) was measured after a 10 s breath-hold for three groups: healthy never-smoking subjects (n = 17), asymptomatic (active and former) smokers (n = 15) and subjects with chronic obstructive pulmonary disease (n = 16). Measurements were made at 1300 mL and 1800 mL volumetric lung depth. Each subject also underwent conventional lung function tests, including post bronchodilator FEV1, VC, and diffusing capacity for carbon monoxide, DL,CO. Patients with previously diagnosed respiratory disease underwent a CT-scan of the lungs. Particle lung deposition fraction, was compared between the groups and with conventional lung function tests. Results: We found that the deposition fraction was significantly lower for subjects with emphysema compared to the other subjects (p = 0.001-0.01), but no significant differences were found between healthy never-smokers and smokers. Furthermore, the particle deposition correlated with pulmonary function tests, FEV1%Pred (p < 0.05), FEV1/VC%Pred (p < 0.01) and DL,CO (p < 0.0005) when all subjects were included. Furthermore, for subjects with emphysema, deposition fraction correlated strongly with DL,CO (Pearson's r = 0.80-0.85, p < 0.002) while this correlation was not found within the other groups. Conclusions: Lower deposition fraction was observed for emphysematous subjects and this can be explained by enlarged distal airspaces in the lungs. As expected, deposition increases for smaller particles and deeper inhalation. The observed results have implications for exposure assessment of air pollution and dosimetry of aerosol-based drug delivery of nanoparticles.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Lungmedicin och allergi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Respiratory Medicine and Allergy (hsv//eng)
Nyckelord
- Chronic obstructive pulmonary disease
- Emphysema
- Human
- In vivo study
- Inhalation exposure
- Lung deposition
- Nanoparticles
- bronchodilating agent
- carbon monoxide
- nanoparticle
- adult
- Article
- asymptomatic disease
- bioaccumulation
- breath holding
- chronic obstructive lung disease
- computer assisted tomography
- controlled study
- female
- forced expiratory volume
- lung diffusion capacity
- lung emphysema
- lung function test
- major clinical study
- male
- measurement
- particle size
- smoking
- vital capacity
- volumetry
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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