Objective To observe the correlations of chest CT quantitative parameters in patients with acute exacerbation of chronic obstructive pulmonary disease(AECOPD)with blood eosinophil(EOS)level.Methods Chest CT data of 16...Objective To observe the correlations of chest CT quantitative parameters in patients with acute exacerbation of chronic obstructive pulmonary disease(AECOPD)with blood eosinophil(EOS)level.Methods Chest CT data of 162 AECOPD patients with elevated eosinophils were retrospectively analyzed.The patients were divided into low EOS group(n=105)and high EOS group(n=57)according to the absolute counting of blood EOS.The quantitative CT parameters,including the number of whole lung bronchi and the volume of blood vessels,low-attenuation area percentage(LAA%)of whole lung,of left/right lung and each lobe of lung,as well as the luminal diameter(LD),wall thickness(WT),wall area(WA)and WA percentage of total bronchial cross-section(WA%)of grade 3 to 8 bronchi were compared between groups.Spearman correlations were performed to analyze the correlations of quantitative CT parameters with blood EOS level.Results LAA%of the whole lung,of the left/right lung and each lobe of lung,as well as of the upper lobe of right lung LD grade 4,middle lobe of right lung WT grade 5,upper lobe of right lung WA grade 4,middle lobe of right lung WA grade 5 and lower lobe of left lung WA grade 3 in low EOS group were all higher than those in high EOS group(all P<0.05).Except for the upper lobe of right lung LD grade 4,the above quantitative CT indexes being significant different between groups were all weakly and negatively correlated with blood EOS level(r=-0.335 to-0.164,all P<0.05).Conclusion Chest CT quantitative parameters of AECOPD patients were correlated with blood EOS level,among which LAA%,a part of WT and WA were all weakly negatively correlated with blood EOS level.展开更多
Objective To investigate the bacteria spectrum isolated from AE-CB/COPD and the manner of management of AE-CB/COPD in respiratory or internal medicine department in some regions of China. Methods Respiratory physician...Objective To investigate the bacteria spectrum isolated from AE-CB/COPD and the manner of management of AE-CB/COPD in respiratory or internal medicine department in some regions of China. Methods Respiratory physicians received questionnaire at randomization just after they managed a patient presenting to outpatient department with AE-CB/COPD, on general conditions and symptoms of patients, type of examinations, diagnosis, type of antibiotics used and mode of administration. Results of sputum bacteria culture were followed up. Results Among the 1583 AE-CB/COPD, 63.04% were male and 35.19% were female. 54.6% of them were older than 60 years. 81.87% of the patients produced sputum. Sputum bacteria culture, chest X-ray and chest CT were carried out to 21.3%, 66.3% and 11.1% patients, respectively. 355 strains were isolated from patients whose sputum bacteria culture was positive. Streptococcus pneumoniae, Haemophilus influenzae and Moraxella catarrhalis were the three most isolates. 84.7% of the 1583 AE-CB/COPD received 1692 times of antibiotic prescribing. The most frequently prescribed antibiotic were B-lactams (51.36% of all antibiotic prescribing), macrolides (14.01%) and quinolones (31.03%). Much more macrolides were prescribed in the area where more patients pay the medicines at his own expense than those in the area where more patients share public health service. Conclusion In China, respiratory physicians can reasonably select antibiotics to manage acute exacerbation of chronic bronchitis/ chronic obstructive pulmonary disease in pulmonary outpatient department. Sputum culture is done in part of the patients, but susceptibility tests are missing. One issue revealed by the survey is that the list of prescribing medications laid down by government have great influence on antibiotic use.展开更多
OBJECTIVE The present study aimed to investigate the relationship between Wnt/β-catenin and Nrf2 signaling pathways,and understanding the mechanisms underlying the process of inflammatory in chronic obstructive pulmo...OBJECTIVE The present study aimed to investigate the relationship between Wnt/β-catenin and Nrf2 signaling pathways,and understanding the mechanisms underlying the process of inflammatory in chronic obstructive pulmonary disease(COPD),which was a serious disease of respiratory system.METHODS We duplicate the emphysema model with porcine pancreatic elastase(PPE)in Nrf2-/-and WT mouse for 21d,and intraperitoneal injection of Li Cl,the activator of Wnt/β-catenin signaling pathway from 14 d to the end.Hematoxylin and eosin(H&E)staining was performed to assess the histopathologic level,and immunohistochemistry(IHC)for Mac-3(the marker of macrophagocyte)and Ly6G(the marker of neutrophil)was used to observe the inflammatory infiltrate,while the levels of Wnt/β-catenin and Nrf2 signaling pathways related proteins heme oxygenase-1(HO-1),NAD(P)H:quinone oxidoreductase 1(NQO1),and the expression of inflammatory cytokine interleukin-6(IL-6)were detected by Western blotting of lung tissues.In vitro,cigarette smoke extract(CSE)-treated normal human bronchial epithelial(NHBE)cells,cell viability was examined by MTT assay,and then we treated recombinant human Wnt3a,si Nrf2 and si Wnt3a to measure the expression of Wnt3a,β-catenin,Nrf2,HO-1,NQO-1,and IL-6.Cellular immunofluorescence staining was employed to identify the nuclear translocation of Nrf2.RESULTS We found that the Li Cl-treated group has markedly decreased the damage of alveolar structure and inflammatory signs than the model group of WT mice rather than Nrf2-/-group.It also seen that Li Cl not only increasedβ-catenin,but it also led to a comparable increase in Nrf2,HO-1,NQO1,and decrease of IL-6 compared with WT model groups but except to Nrf2-/-group in vivo.And it showed that Wnt3atreatment has significantly increased the nuclear translocation of Nrf2 and the expression of HO-1 and NQO1,reduced the IL-6 release,while there has no significance when Nrf2 was blocked in CSE-induced NHBE cells.CONCLUSION Our results demonstrated that Wnt3a/β-catenin significantly balanced oxidative stress and attenuated inflammation reaction by promoting Nrf2 nuclear translocation and activity.展开更多
文摘Objective To observe the correlations of chest CT quantitative parameters in patients with acute exacerbation of chronic obstructive pulmonary disease(AECOPD)with blood eosinophil(EOS)level.Methods Chest CT data of 162 AECOPD patients with elevated eosinophils were retrospectively analyzed.The patients were divided into low EOS group(n=105)and high EOS group(n=57)according to the absolute counting of blood EOS.The quantitative CT parameters,including the number of whole lung bronchi and the volume of blood vessels,low-attenuation area percentage(LAA%)of whole lung,of left/right lung and each lobe of lung,as well as the luminal diameter(LD),wall thickness(WT),wall area(WA)and WA percentage of total bronchial cross-section(WA%)of grade 3 to 8 bronchi were compared between groups.Spearman correlations were performed to analyze the correlations of quantitative CT parameters with blood EOS level.Results LAA%of the whole lung,of the left/right lung and each lobe of lung,as well as of the upper lobe of right lung LD grade 4,middle lobe of right lung WT grade 5,upper lobe of right lung WA grade 4,middle lobe of right lung WA grade 5 and lower lobe of left lung WA grade 3 in low EOS group were all higher than those in high EOS group(all P<0.05).Except for the upper lobe of right lung LD grade 4,the above quantitative CT indexes being significant different between groups were all weakly and negatively correlated with blood EOS level(r=-0.335 to-0.164,all P<0.05).Conclusion Chest CT quantitative parameters of AECOPD patients were correlated with blood EOS level,among which LAA%,a part of WT and WA were all weakly negatively correlated with blood EOS level.
文摘Objective To investigate the bacteria spectrum isolated from AE-CB/COPD and the manner of management of AE-CB/COPD in respiratory or internal medicine department in some regions of China. Methods Respiratory physicians received questionnaire at randomization just after they managed a patient presenting to outpatient department with AE-CB/COPD, on general conditions and symptoms of patients, type of examinations, diagnosis, type of antibiotics used and mode of administration. Results of sputum bacteria culture were followed up. Results Among the 1583 AE-CB/COPD, 63.04% were male and 35.19% were female. 54.6% of them were older than 60 years. 81.87% of the patients produced sputum. Sputum bacteria culture, chest X-ray and chest CT were carried out to 21.3%, 66.3% and 11.1% patients, respectively. 355 strains were isolated from patients whose sputum bacteria culture was positive. Streptococcus pneumoniae, Haemophilus influenzae and Moraxella catarrhalis were the three most isolates. 84.7% of the 1583 AE-CB/COPD received 1692 times of antibiotic prescribing. The most frequently prescribed antibiotic were B-lactams (51.36% of all antibiotic prescribing), macrolides (14.01%) and quinolones (31.03%). Much more macrolides were prescribed in the area where more patients pay the medicines at his own expense than those in the area where more patients share public health service. Conclusion In China, respiratory physicians can reasonably select antibiotics to manage acute exacerbation of chronic bronchitis/ chronic obstructive pulmonary disease in pulmonary outpatient department. Sputum culture is done in part of the patients, but susceptibility tests are missing. One issue revealed by the survey is that the list of prescribing medications laid down by government have great influence on antibiotic use.
基金The project supported by National Natural Science Foundation of China(81274172,81473267,30801535,81470003)
文摘OBJECTIVE The present study aimed to investigate the relationship between Wnt/β-catenin and Nrf2 signaling pathways,and understanding the mechanisms underlying the process of inflammatory in chronic obstructive pulmonary disease(COPD),which was a serious disease of respiratory system.METHODS We duplicate the emphysema model with porcine pancreatic elastase(PPE)in Nrf2-/-and WT mouse for 21d,and intraperitoneal injection of Li Cl,the activator of Wnt/β-catenin signaling pathway from 14 d to the end.Hematoxylin and eosin(H&E)staining was performed to assess the histopathologic level,and immunohistochemistry(IHC)for Mac-3(the marker of macrophagocyte)and Ly6G(the marker of neutrophil)was used to observe the inflammatory infiltrate,while the levels of Wnt/β-catenin and Nrf2 signaling pathways related proteins heme oxygenase-1(HO-1),NAD(P)H:quinone oxidoreductase 1(NQO1),and the expression of inflammatory cytokine interleukin-6(IL-6)were detected by Western blotting of lung tissues.In vitro,cigarette smoke extract(CSE)-treated normal human bronchial epithelial(NHBE)cells,cell viability was examined by MTT assay,and then we treated recombinant human Wnt3a,si Nrf2 and si Wnt3a to measure the expression of Wnt3a,β-catenin,Nrf2,HO-1,NQO-1,and IL-6.Cellular immunofluorescence staining was employed to identify the nuclear translocation of Nrf2.RESULTS We found that the Li Cl-treated group has markedly decreased the damage of alveolar structure and inflammatory signs than the model group of WT mice rather than Nrf2-/-group.It also seen that Li Cl not only increasedβ-catenin,but it also led to a comparable increase in Nrf2,HO-1,NQO1,and decrease of IL-6 compared with WT model groups but except to Nrf2-/-group in vivo.And it showed that Wnt3atreatment has significantly increased the nuclear translocation of Nrf2 and the expression of HO-1 and NQO1,reduced the IL-6 release,while there has no significance when Nrf2 was blocked in CSE-induced NHBE cells.CONCLUSION Our results demonstrated that Wnt3a/β-catenin significantly balanced oxidative stress and attenuated inflammation reaction by promoting Nrf2 nuclear translocation and activity.
