目的探讨血清可溶性尿激酶型纤溶酶原激活物受体对老年慢性阻塞性肺疾病急性加重期(AECOPD)的诊断价值。方法选取本院2015年1月至2018年6月收治的老年慢性阻塞性肺疾病(COPD)患者158例,其中AECOPD患者(急性组)93例,COPD稳定期患者(稳定...目的探讨血清可溶性尿激酶型纤溶酶原激活物受体对老年慢性阻塞性肺疾病急性加重期(AECOPD)的诊断价值。方法选取本院2015年1月至2018年6月收治的老年慢性阻塞性肺疾病(COPD)患者158例,其中AECOPD患者(急性组)93例,COPD稳定期患者(稳定组)65例;同时选取同期健康体检老年人群79例作为对照组。检测血清可溶性尿激酶型纤溶酶原激活物受体(suPAR)、降钙素原(PCT)和C反应蛋白(CRP)水平、肺功能及CAT评分;同时分析suPAR、PCT、CRP水平与肺功能和CAT评分的相关性,并应用受试者工作曲线(ROC)评分suPAR、PCT、CRP水平对老年慢性阻塞性肺疾病急性加重期的诊断价值。结果急性组和稳定组血清suPAR、CRP、PCT水平高于对照组( P <0.05);稳定组血清suPAR、CRP、PCT水平和CAT评分低于急性组( P <0.05)。急性组和稳定组FEV1%pred和FEV1/FVC水平低于对照组( P <0.05);稳定组FEV1%pred和FEV1/FVC水平高于急性组( P <0.05)。血清suPAR、PCT和CRP水平与FEV1%pred和FEV1/FVC呈负相关( P <0.05),与CAT评分呈正相关( P <0.05)。ROC曲线分析显示,血清suPAR对COPD急性加重期的诊断价值优于PCT和CRP。结论老年COPD急性加重期患者血清suPAR水平明显上升,与肺功能指标密切相关,可作为诊断老年COPD急性加重期的标志物。展开更多
Background Intratracheal instillation of blood induces self-repaired acute lung injury. However, the mechanism of repair has been unclear. Heme-oxygenase （HO）-1, which catalyzes heme breakdown, acts as an inducible ...Background Intratracheal instillation of blood induces self-repaired acute lung injury. However, the mechanism of repair has been unclear. Heme-oxygenase （HO）-1, which catalyzes heme breakdown, acts as an inducible defense against oxidative stress and plays an important role in inflammation. The objective of this study was to test the role of HO-1 in lung injury caused by intratracheal instillation of red cells. Methods Forty healthy, male Sprague-Dawley rats were randomly divided into five groups： normal group, saline group, erythrocyte group, erythrocyte＋zinc-protoporphyrin （ZnPP, HO-1 inhibitor） group and saline＋ZnPP group. At 2 days after intratracheal instillation of red cells, lung tissues and lavage samples were isolated for biochemical determinations and histological measurements. Results Histological analysis revealed that administration of ZnPP worsened the acute lung injury induced by instilled erythrocytes. HO-1 was over-expressed in the erythrocyte group and in the erythrocyte ＋ ZnPP group. Compared with the erythrocyte ＋ ZnPP group, the levels of total protein, lactate dehydrogenase and tumor necrosis factor-a in the lavage were lower （P 〈0.01）, while the level of interleukin-10 was higher in the erythrocyte group （P 〈0.01）. Conclusion HO-1 protects against erythrocyte-induced inflammatory injury in lung.展开更多
文摘目的探讨血清可溶性尿激酶型纤溶酶原激活物受体对老年慢性阻塞性肺疾病急性加重期(AECOPD)的诊断价值。方法选取本院2015年1月至2018年6月收治的老年慢性阻塞性肺疾病(COPD)患者158例,其中AECOPD患者(急性组)93例,COPD稳定期患者(稳定组)65例;同时选取同期健康体检老年人群79例作为对照组。检测血清可溶性尿激酶型纤溶酶原激活物受体(suPAR)、降钙素原(PCT)和C反应蛋白(CRP)水平、肺功能及CAT评分;同时分析suPAR、PCT、CRP水平与肺功能和CAT评分的相关性,并应用受试者工作曲线(ROC)评分suPAR、PCT、CRP水平对老年慢性阻塞性肺疾病急性加重期的诊断价值。结果急性组和稳定组血清suPAR、CRP、PCT水平高于对照组( P <0.05);稳定组血清suPAR、CRP、PCT水平和CAT评分低于急性组( P <0.05)。急性组和稳定组FEV1%pred和FEV1/FVC水平低于对照组( P <0.05);稳定组FEV1%pred和FEV1/FVC水平高于急性组( P <0.05)。血清suPAR、PCT和CRP水平与FEV1%pred和FEV1/FVC呈负相关( P <0.05),与CAT评分呈正相关( P <0.05)。ROC曲线分析显示,血清suPAR对COPD急性加重期的诊断价值优于PCT和CRP。结论老年COPD急性加重期患者血清suPAR水平明显上升,与肺功能指标密切相关,可作为诊断老年COPD急性加重期的标志物。
文摘Background Intratracheal instillation of blood induces self-repaired acute lung injury. However, the mechanism of repair has been unclear. Heme-oxygenase （HO）-1, which catalyzes heme breakdown, acts as an inducible defense against oxidative stress and plays an important role in inflammation. The objective of this study was to test the role of HO-1 in lung injury caused by intratracheal instillation of red cells. Methods Forty healthy, male Sprague-Dawley rats were randomly divided into five groups： normal group, saline group, erythrocyte group, erythrocyte＋zinc-protoporphyrin （ZnPP, HO-1 inhibitor） group and saline＋ZnPP group. At 2 days after intratracheal instillation of red cells, lung tissues and lavage samples were isolated for biochemical determinations and histological measurements. Results Histological analysis revealed that administration of ZnPP worsened the acute lung injury induced by instilled erythrocytes. HO-1 was over-expressed in the erythrocyte group and in the erythrocyte ＋ ZnPP group. Compared with the erythrocyte ＋ ZnPP group, the levels of total protein, lactate dehydrogenase and tumor necrosis factor-a in the lavage were lower （P 〈0.01）, while the level of interleukin-10 was higher in the erythrocyte group （P 〈0.01）. Conclusion HO-1 protects against erythrocyte-induced inflammatory injury in lung.
