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Clinical study of inflammatory factors in sputum induced early after lung volume reduction surgery

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Background The aim of this study was to prospectively study the changes in neutrophil elastase (NE), flbroblast growth factor 9 (Fgf9), matrix metalloproteinase-9 (MMP-9), tissue inhibitor of metalloproteinase 1 (TIMP-1) in sputum induced during the early period after lung volume reduction surgery (LVRS).Methods From April to October 2005, ten consecutive patients with chronic obstructive pulmonary disease (COPD) underwent LVRS. Ten non-small cell lung cancer patients (stage II-Illa) received Iobectomy as a control group. The induced sputum was collected from beth groups at six different times (two weeks before operation and postoperatively at 1, 2, 4, 6 and 10 days). The level of NE, Fgf9, MMP-9 and TIMP-1 were measured using enzyme-linked immunosorbent assay.Results The pulmonary function (FEV1%) and arterial blood gases (PaO2 and PaCO2) were significantly different between the groups. There were no significant differences in age, ejection fraction (EF), and operation duration, but hemoglobin in the LVRS group was statistically higher than in the controls. At certain times, there were significant differences in NE, MMP-9, TIMP-1 and MMP-9/I"IMP-1 (P <0.05) but not in Fgf9 between the two groups. The levels of NE and TIMP-1 were maximal at 2 days postoperatively and that of MMP-9 and MMP-9/IIMP-1 at 4 clays postoperatively in the LVRS group. In the control group, maximal levels of NE and TIMP-1 occurred at 2 days postoperatively and that of MMP-9 and MMP-9/TIMP-1 at 1 day postoperatively. Ten days after surgery, all values of the control group were not significantly different from the baseline. In the LVRS group, the levels were significantly different from the pre-operative values (P <0.05) apart from TIMP-1.Conclusion The levels of NE, MMP-9, TIMP-1 and MMP-9/TIMP-1 of the LVRS group were different from those of the control group. The time course of these changes may be related to LVRS and the underlying process of COPD.

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作者单位: Department of Thoracic Surgery, Beijing Chaoyang Hospital,Capital Medical University, the Institute of Beijing Respiratory Medicine, Beijing 100020, China [1] Department of Thoracic Surgery, Beijing Friendship Hospital,Capital Medical University, Beijing 100050, China [2]
期刊: 《中华医学杂志(英文版)》2008年121卷18期 1796-1799页 SCIMEDLINEISTICCSCDBP
分类号: R5
栏目名称: ORIGINAL ARTICLE
发布时间: 2008-11-25
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