Reduced rhinovirus-specific antibodies are associated with acute exacerbations of chronic obstructive pulmonary disease requiring hospitalisation
<p>Abstract</p> <p>Background</p> <p>Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) are often linked to respiratory infections. However, it is unknown if COPD patients who experience frequent exacerbations have impaired humoral immunity. The aim o...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2012-07-01
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| Series: | BMC Pulmonary Medicine |
| Online Access: | http://www.biomedcentral.com/1471-2466/12/37 |
| _version_ | 1818035949823590400 |
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| author | Yerkovich Stephanie T Hales Belinda J Carroll Melanie L Burel Julie G Towers Michelle A Smith Daniel J Thomas Wayne R Upham John W |
| author_facet | Yerkovich Stephanie T Hales Belinda J Carroll Melanie L Burel Julie G Towers Michelle A Smith Daniel J Thomas Wayne R Upham John W |
| author_sort | Yerkovich Stephanie T |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) are often linked to respiratory infections. However, it is unknown if COPD patients who experience frequent exacerbations have impaired humoral immunity. The aim of this study was to determine if antibodies specific for common respiratory pathogens are associated with AECOPD.</p> <p>Methods</p> <p>Plasma was obtained from COPD patients when clinically stable. AECOPD requiring hospitalisation were recorded. IgG<sub>1</sub> antibodies to <it>H. Influenzae</it> outer membrane protein 6 (P6), pneumococcal surface protein C (PspC) and the VP1 viral capsid protein of rhinovirus were measured.</p> <p>Results</p> <p>COPD patients who had an AECOPD (n = 32) had significantly lower anti-VP1 IgG<sub>1</sub> antibody levels when stable compared to COPD patients who did not have an AECOPD (n = 28, p = 0.024). Furthermore, the number of hospitalisations was inversely proportional to anti-VP1 antibody levels (r = −0.331, p = 0.011). In contrast, antibodies specific for P6 and PspC were present at similar concentrations between groups. Plasma IL-21, a cytokine important for B-cell development and antibody synthesis, was also lower in COPD patients who had an AECOPD, than in stable COPD patients (p = 0.046).</p> <p>Conclusion</p> <p>Deficient humoral immunity specific for rhinoviruses is associated with AECOPD requiring hospitalisation, and may partly explain why some COPD patients have an increased exacerbation risk following respiratory viral infections.</p> |
| first_indexed | 2024-12-10T07:03:11Z |
| format | Article |
| id | doaj.art-ffdba1fd7b1449debfcefc5cd8a41a2d |
| institution | Directory Open Access Journal |
| issn | 1471-2466 |
| language | English |
| last_indexed | 2024-12-10T07:03:11Z |
| publishDate | 2012-07-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Pulmonary Medicine |
| spelling | doaj.art-ffdba1fd7b1449debfcefc5cd8a41a2d2022-12-22T01:58:17ZengBMCBMC Pulmonary Medicine1471-24662012-07-011213710.1186/1471-2466-12-37Reduced rhinovirus-specific antibodies are associated with acute exacerbations of chronic obstructive pulmonary disease requiring hospitalisationYerkovich Stephanie THales Belinda JCarroll Melanie LBurel Julie GTowers Michelle ASmith Daniel JThomas Wayne RUpham John W<p>Abstract</p> <p>Background</p> <p>Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) are often linked to respiratory infections. However, it is unknown if COPD patients who experience frequent exacerbations have impaired humoral immunity. The aim of this study was to determine if antibodies specific for common respiratory pathogens are associated with AECOPD.</p> <p>Methods</p> <p>Plasma was obtained from COPD patients when clinically stable. AECOPD requiring hospitalisation were recorded. IgG<sub>1</sub> antibodies to <it>H. Influenzae</it> outer membrane protein 6 (P6), pneumococcal surface protein C (PspC) and the VP1 viral capsid protein of rhinovirus were measured.</p> <p>Results</p> <p>COPD patients who had an AECOPD (n = 32) had significantly lower anti-VP1 IgG<sub>1</sub> antibody levels when stable compared to COPD patients who did not have an AECOPD (n = 28, p = 0.024). Furthermore, the number of hospitalisations was inversely proportional to anti-VP1 antibody levels (r = −0.331, p = 0.011). In contrast, antibodies specific for P6 and PspC were present at similar concentrations between groups. Plasma IL-21, a cytokine important for B-cell development and antibody synthesis, was also lower in COPD patients who had an AECOPD, than in stable COPD patients (p = 0.046).</p> <p>Conclusion</p> <p>Deficient humoral immunity specific for rhinoviruses is associated with AECOPD requiring hospitalisation, and may partly explain why some COPD patients have an increased exacerbation risk following respiratory viral infections.</p>http://www.biomedcentral.com/1471-2466/12/37 |
| spellingShingle | Yerkovich Stephanie T Hales Belinda J Carroll Melanie L Burel Julie G Towers Michelle A Smith Daniel J Thomas Wayne R Upham John W Reduced rhinovirus-specific antibodies are associated with acute exacerbations of chronic obstructive pulmonary disease requiring hospitalisation BMC Pulmonary Medicine |
| title | Reduced rhinovirus-specific antibodies are associated with acute exacerbations of chronic obstructive pulmonary disease requiring hospitalisation |
| title_full | Reduced rhinovirus-specific antibodies are associated with acute exacerbations of chronic obstructive pulmonary disease requiring hospitalisation |
| title_fullStr | Reduced rhinovirus-specific antibodies are associated with acute exacerbations of chronic obstructive pulmonary disease requiring hospitalisation |
| title_full_unstemmed | Reduced rhinovirus-specific antibodies are associated with acute exacerbations of chronic obstructive pulmonary disease requiring hospitalisation |
| title_short | Reduced rhinovirus-specific antibodies are associated with acute exacerbations of chronic obstructive pulmonary disease requiring hospitalisation |
| title_sort | reduced rhinovirus specific antibodies are associated with acute exacerbations of chronic obstructive pulmonary disease requiring hospitalisation |
| url | http://www.biomedcentral.com/1471-2466/12/37 |
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