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논문 기본 정보

자료유형
학술저널
저자정보
Ju, Jinyung (Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Wonkwang University Sanbon Hospital, Wonkwang University College of Medicine)
저널정보
대한결핵 및 호흡기학회 Tuberculosis and Respiratory Diseases 결핵 및 호흡기 질환 제81권 제2호
발행연도
2018.1
수록면
132 - 137 (6page)

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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.

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