Small macrophages are present in early childhood respiratory disease
Background: Recently, an established "small macrophage" phenotype has been observed in the sputum of patients with CF and COPD. However, little is known about the prevalence of this phenotype in the airways of young children. Since respiratory inflammation begins early in CF, we hypothesis...
| Main Authors: | , , , , , , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/54466 |
| _version_ | 1848759377920524288 |
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| author | Garratt, L. Wright, A. Ranganathan, S. Grigg, J. Sly, P. Douglas, T. Gangell, C. Hall, Graham Kicic, A. Mott, L. Skoric, B. |
| author_facet | Garratt, L. Wright, A. Ranganathan, S. Grigg, J. Sly, P. Douglas, T. Gangell, C. Hall, Graham Kicic, A. Mott, L. Skoric, B. |
| author_sort | Garratt, L. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Background: Recently, an established "small macrophage" phenotype has been observed in the sputum of patients with CF and COPD. However, little is known about the prevalence of this phenotype in the airways of young children. Since respiratory inflammation begins early in CF, we hypothesised that these small macrophages would be increased in paediatric CF bronchoalveolar lavage (BAL). Methods: Macrophage populations in CF and disease control BAL were assessed by multicolour flow cytometry. BAL inflammatory indices were collected as part of the AREST-CF programme. Results: Small macrophages were present in CF (n = 35, mean 36 ± 12% of BAL macrophages) but not significantly different to the respiratory disease controls (n = 7, mean 40 ± 21%). Number of small macrophages correlated significantly with number of BAL neutrophils (r = 0.44, p< 0.01) but not infection or IL-8. Conclusions: In paediatric patients small macrophages are not unique to CF, but their establishment as the dominant phenotype in adults may be due to chronicity of inflammation and infection. |
| first_indexed | 2025-11-14T09:58:55Z |
| format | Journal Article |
| id | curtin-20.500.11937-54466 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:58:55Z |
| publishDate | 2012 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-544662017-09-29T06:19:12Z Small macrophages are present in early childhood respiratory disease Garratt, L. Wright, A. Ranganathan, S. Grigg, J. Sly, P. Douglas, T. Gangell, C. Hall, Graham Kicic, A. Mott, L. Skoric, B. Background: Recently, an established "small macrophage" phenotype has been observed in the sputum of patients with CF and COPD. However, little is known about the prevalence of this phenotype in the airways of young children. Since respiratory inflammation begins early in CF, we hypothesised that these small macrophages would be increased in paediatric CF bronchoalveolar lavage (BAL). Methods: Macrophage populations in CF and disease control BAL were assessed by multicolour flow cytometry. BAL inflammatory indices were collected as part of the AREST-CF programme. Results: Small macrophages were present in CF (n = 35, mean 36 ± 12% of BAL macrophages) but not significantly different to the respiratory disease controls (n = 7, mean 40 ± 21%). Number of small macrophages correlated significantly with number of BAL neutrophils (r = 0.44, p< 0.01) but not infection or IL-8. Conclusions: In paediatric patients small macrophages are not unique to CF, but their establishment as the dominant phenotype in adults may be due to chronicity of inflammation and infection. 2012 Journal Article http://hdl.handle.net/20.500.11937/54466 10.1016/j.jcf.2011.11.008 Elsevier unknown |
| spellingShingle | Garratt, L. Wright, A. Ranganathan, S. Grigg, J. Sly, P. Douglas, T. Gangell, C. Hall, Graham Kicic, A. Mott, L. Skoric, B. Small macrophages are present in early childhood respiratory disease |
| title | Small macrophages are present in early childhood respiratory disease |
| title_full | Small macrophages are present in early childhood respiratory disease |
| title_fullStr | Small macrophages are present in early childhood respiratory disease |
| title_full_unstemmed | Small macrophages are present in early childhood respiratory disease |
| title_short | Small macrophages are present in early childhood respiratory disease |
| title_sort | small macrophages are present in early childhood respiratory disease |
| url | http://hdl.handle.net/20.500.11937/54466 |