An Increased Proportion of Apoptosis in CD4+ T Lymphocytes Isolated from the Peripheral Blood in Patients with Stable Chronic Obstructive Pulmonary Disease
Background The pathophysiology of chronic obstructive pulmonary disease (COPD) includes inflammation, oxidative stress, an imbalance of proteases and antiproteases and apoptosis which has been focused on lately. Abnormal apoptotic events have been demonstrated in both epithelial and endothelial c...
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| Format: | Article |
| Language: | English |
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The Korean Academy of Tuberculosis and Respiratory Diseases
2018-04-01
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| Series: | Tuberculosis and Respiratory Diseases |
| Subjects: | |
| Online Access: | https://e-trd.org/search.php?where=aview&id=10.4046/trd.2017.0079&code=0003TRD&vmode=FULL |
| _version_ | 1818757460836483072 |
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| author | Jinyung Ju, M.D. |
| author_facet | Jinyung Ju, M.D. |
| author_sort | Jinyung Ju, M.D. |
| collection | DOAJ |
| description | Background
The pathophysiology of chronic obstructive pulmonary disease (COPD) includes inflammation, oxidative stress, an imbalance of proteases and antiproteases and apoptosis which has been focused on lately. Abnormal apoptotic events have been demonstrated in both epithelial and endothelial cells, as well as in inflammatory cells including neutrophils and lymphocytes in the lungs of COPD patients. An increased propensity of activated T lymphocytes to undergo apoptosis has been observed in the peripheral blood of COPD patients. Therefore, the apoptosis of T lymphocytes without activating them was investigated in this study.
Methods
Twelve control subjects, 21 stable COPD patients and 15 exacerbated COPD patients were recruited in the study. The T lymphocytes were isolated from the peripheral blood using magnetically activated cell sorting. Apoptosis of the T lymphocytes was assessed with flow cytometry using Annexin V and 7-aminoactinomycin D. Apoptosis of T lymphocytes at 24 hours after the cell culture was measured so that the T lymphocyte apoptosis among the control and the COPD patients could be compared.
Results
Stable COPD patients had increased rates of CD4+ T lymphocyte apoptosis at 24 hours after the cell culture, more than the CD4+ T lymphocyte apoptosis which appeared in the control group, while the COPD patients with acute exacerbation had an amplified response of CD4+ T lymphocyte apoptosis as well as of CD8+ T lymphocyte apoptosis at 24 hours after the cell culture.
Conclusion
Stable COPD patients have more apoptosis of CD4+ T lymphocytes, which can be associated with the pathophysiology of COPD in stable conditions. |
| first_indexed | 2024-12-18T06:11:18Z |
| format | Article |
| id | doaj.art-07ab9bb3a2044a53914b997f51962216 |
| institution | Directory Open Access Journal |
| issn | 1738-3536 2005-6184 |
| language | English |
| last_indexed | 2024-12-18T06:11:18Z |
| publishDate | 2018-04-01 |
| publisher | The Korean Academy of Tuberculosis and Respiratory Diseases |
| record_format | Article |
| series | Tuberculosis and Respiratory Diseases |
| spelling | doaj.art-07ab9bb3a2044a53914b997f519622162022-12-21T21:18:24ZengThe Korean Academy of Tuberculosis and Respiratory DiseasesTuberculosis and Respiratory Diseases1738-35362005-61842018-04-01812132137An Increased Proportion of Apoptosis in CD4+ T Lymphocytes Isolated from the Peripheral Blood in Patients with Stable Chronic Obstructive Pulmonary DiseaseJinyung Ju, M.D.0Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Wonkwang University Sanbon Hospital, Wonkwang University College of Medicine, Gunpo, Korea.Background The pathophysiology of chronic obstructive pulmonary disease (COPD) includes inflammation, oxidative stress, an imbalance of proteases and antiproteases and apoptosis which has been focused on lately. Abnormal apoptotic events have been demonstrated in both epithelial and endothelial cells, as well as in inflammatory cells including neutrophils and lymphocytes in the lungs of COPD patients. An increased propensity of activated T lymphocytes to undergo apoptosis has been observed in the peripheral blood of COPD patients. Therefore, the apoptosis of T lymphocytes without activating them was investigated in this study. Methods Twelve control subjects, 21 stable COPD patients and 15 exacerbated COPD patients were recruited in the study. The T lymphocytes were isolated from the peripheral blood using magnetically activated cell sorting. Apoptosis of the T lymphocytes was assessed with flow cytometry using Annexin V and 7-aminoactinomycin D. Apoptosis of T lymphocytes at 24 hours after the cell culture was measured so that the T lymphocyte apoptosis among the control and the COPD patients could be compared. Results Stable COPD patients had increased rates of CD4+ T lymphocyte apoptosis at 24 hours after the cell culture, more than the CD4+ T lymphocyte apoptosis which appeared in the control group, while the COPD patients with acute exacerbation had an amplified response of CD4+ T lymphocyte apoptosis as well as of CD8+ T lymphocyte apoptosis at 24 hours after the cell culture. Conclusion Stable COPD patients have more apoptosis of CD4+ T lymphocytes, which can be associated with the pathophysiology of COPD in stable conditions.https://e-trd.org/search.php?where=aview&id=10.4046/trd.2017.0079&code=0003TRD&vmode=FULLpulmonary diseasechronic obstructivet-lymphocytes; apoptosis |
| spellingShingle | Jinyung Ju, M.D. An Increased Proportion of Apoptosis in CD4+ T Lymphocytes Isolated from the Peripheral Blood in Patients with Stable Chronic Obstructive Pulmonary Disease Tuberculosis and Respiratory Diseases pulmonary disease chronic obstructive t-lymphocytes; apoptosis |
| title | An Increased Proportion of Apoptosis in CD4+ T Lymphocytes Isolated from the Peripheral Blood in Patients with Stable Chronic Obstructive Pulmonary Disease |
| title_full | An Increased Proportion of Apoptosis in CD4+ T Lymphocytes Isolated from the Peripheral Blood in Patients with Stable Chronic Obstructive Pulmonary Disease |
| title_fullStr | An Increased Proportion of Apoptosis in CD4+ T Lymphocytes Isolated from the Peripheral Blood in Patients with Stable Chronic Obstructive Pulmonary Disease |
| title_full_unstemmed | An Increased Proportion of Apoptosis in CD4+ T Lymphocytes Isolated from the Peripheral Blood in Patients with Stable Chronic Obstructive Pulmonary Disease |
| title_short | An Increased Proportion of Apoptosis in CD4+ T Lymphocytes Isolated from the Peripheral Blood in Patients with Stable Chronic Obstructive Pulmonary Disease |
| title_sort | increased proportion of apoptosis in cd4 t lymphocytes isolated from the peripheral blood in patients with stable chronic obstructive pulmonary disease |
| topic | pulmonary disease chronic obstructive t-lymphocytes; apoptosis |
| url | https://e-trd.org/search.php?where=aview&id=10.4046/trd.2017.0079&code=0003TRD&vmode=FULL |
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