A Quantitative Study of Airway Changes on Micro-CT in a Mouse Asthma Model: Comparison With Histopathological Findings
- Authors
- Paik, Sang-Hyun; Kim, Won-Kyung; Park, Jai-Soung; Park, Choon-Sik; Lin, Gong-Yong
- Issue Date
- Jan-2014
- Publisher
- 대한천식알레르기학회
- Keywords
- Bronchial asthma; mice Laboratory; x-ray Micro-CT scans; airway remodeling; quantitative evaluation; histopathology; case comparison studies
- Citation
- Allergy, Asthma & Immunology Research, v.6, no.1, pp 75 - 82
- Pages
- 8
- Journal Title
- Allergy, Asthma & Immunology Research
- Volume
- 6
- Number
- 1
- Start Page
- 75
- End Page
- 82
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/12569
- DOI
- 10.4168/aair.2014.6.1.75
- ISSN
- 2092-7355
2092-7363
- Abstract
- Purpose: To evaluate airway changes in ovalbumin-induced asthmatic mice in terms of postmortem micro-CT images and pathological findings. Methods: Asthma was induced in mice by intraperitoneal injection and nasal instillation of ovalbumin aluminium hydroxide into mice (experimental group, n=6), and another group of mice received intraperitoneal injection and nasal instillation of distilled phosphate-buffered saline (control group, n=6). Bronchial lumen area was measured in the main bronchial lumen of the distal third bronchial branch level (6 parts" per each mouse) on axial scans of Micro-CT, using a Lucion's smart pen (semi-automated) and a curve pen (manual). Bronchial wall thickness was obtained in 4 sections (2 levels on either side) after the third bronchial branch by measuring the diameter which was perpendicular to the longitudinal axis of the main bronchus on curved Multi-planar reconstruction (MPR) images. Histologic slides were obtained from the lesion that was matched with its CT images, and bronchial wall thicknesses were determined. Results: The mean bronchial lumen area was 0.196 +/- 0.072 mm(2) in the experimental group and 0.243 +/- 0.116 mm(2) in the control group; the difference was significant. Bronchial wall thickness on micro-CT images (mean, 0.119 +/- 0.01 vs. 0.108 +/- 0.013 mm) and in pathological specimens (mean, 0.066 +/- 0.011 vs. 0.041 +/- 0.009 mm) were thicker in the experimental group than in the control group; bronchial wall thickness on micro-CT images correlated well with pathological thickness (for the experimental group, r=0.712; for the control group, r=0.46). The thick bronchial wall in the experimental group demonstrated submucosal hypertrophy along with goblet cell hyperplasia and smooth muscle hyperplasia. Conclusions: The results of this study suggest that asthma may induce thickening of bronchial wall and narrowing of the lumen area on micro-CT images and that these results may significantly correlate with pathological findings.
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Collections - College of Medicine > Department of Internal Medicine > 1. Journal Articles
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