目的 探讨及比较CURB-65、PSI、SMART-COP及APACHEⅡ 4种临床评分对重症社区获得性肺炎(SCAP)患者的早期诊断价值。方法 采用前瞻性研究方法,收集2011年10月—2014年2月广州市第一人民医院呼吸内科收治的67例SCAP及同期33例普通CAP患者的临床资料,记录入组后24小时内CURB-65、PSI、SMART-COP及APACHEⅡ评分的最差值,比较4种临床评分系统对SCAP的早期诊断价值。结果 SCAP组CURB-65、PSI、SMART-COP及APACHEⅡ评分均高于普通CAP组患者[CURB-65(分):3.06±1.10 比0.85±0.79,P<0.001;PSI(分):144.93±36.48比73.94±27.17,P<0.001; SMART-COP(分):6.54±1.41比 1.67±1.02,P<0.001; APACHEⅡ(分):20.79±5.69比7.94±3.87,P<0.001]。CURB-65≥3分、PSI≥130分、SMART-COP≥3分及APACHEⅡ≥15分诊断SCAP的受试者工作特征曲线(ROC)下面积(AUC)分别为0.940[95% CI:0.89~0.98, P<0.001],0.933[95%CI:0.88~0.97,P<0.001],0.999[95%CI:0.99~1.0,P<0.001],0.976[95%CI:0.95~0.99,P<0.001],敏感度分别为65.6%、71.6%、100%、88.1%,特异度分别为100%、100%、78.7%、93.9%。结论 CURB-65及PSI评分特异度好,但敏感度低,易漏诊,SMART-COP和APACHE Ⅱ评分诊断效能更佳。

Objective To evaluate and compare the early diagnosis value of CURB-65,PSI,SMART-COP and APACHEⅡin patients with severe community-acquired pneumonia. Methods This was a prospective study conducted in department of respiratory in Guangzhou First People's Hospital. We included 67 SCAP patients and 33 CAP patients between October of 2011and February of 2014. The lowest scores within 24 hours of CURB-65 score,PSI score,SMART-COP score,APACHE Ⅱ score,respectively,for each patients were recorded. Prediction of SCAP as made in four scoring systems was compared. Results CURB-65 score,PSI score,SMART-COP score,APACHE Ⅱ score were higher in SCAP as compared with that of CAP(CURB-65:3.0±1.1 vs 0.9±0.8,P<0.001;PSI:144.6±36.4 vs 73.9±27.1,P<0.001; SMART-COP:6.5±1.4 vs 1.6±1.0,P<0.001; APACHEⅡ:20.6±5.6 vs 7.9±3.8,P<0.001). ROC curve for CURB-65 score≥ 3 scores,PSI score≥ 130 scores,SMART-COP score≥3 scores and APACHE Ⅱ score ≥ 15 scores in the early diagnosis SCAP were 0.940[95%CI:0.89~0.98,P<0.001],0.933[95%CI:0.88~0.97,P<0.001],0.999[95%CI:0.99~1.0,P<0.001],0.976[95%CI:0.95~0.99,P<0.001]. Sensitivity of four kinds of scoring system was 65.6%,71.6%,100%,88.1%, with specificity of 100%,100%,78.7%,93.9% respectively. Conclusion The specificity of diagnosis was better in the CURB-65 and PSI score,but the sensitivity was low and easy to miss diagnosis. SMART-COP and APACHEⅡscore systems had a better diagnostic value on SCAP.

目的 探讨传统支气管针吸活检 (cTBNA )与超声支气管镜引导下针吸活检(EBUS-TBNA)对于肺部疾病伴有肺门及纵膈淋巴结肿大患者的诊断价值。方法 2012 年8月—2014年6月对在我院行CT检查提示肺部伴有肺门和/或纵膈淋巴结病变的患者38例, 分别利用cTBNA或EBUS-TBNA检查对肿大的淋巴结行TBNA,对所获得的标本进行相应的细胞学检查。结果 38例病例均经组织病理学诊断后确诊,并经过6个月的随访,其中cTBNA组(n=19)经组织病理明确诊断的包括:1例结核,5例小细胞肺癌,6例腺癌,3例鳞癌,1例大细胞癌,3例慢性炎症,cTBNA细胞学诊断阳性诊断率为63.16%(12/19),cTBNA组细胞学诊断肺癌的敏感度为66.67％(10/15),特异度为100％。EBUS-TBNA组(n=19)组织病理学诊断明确的1例为肺结核,1例为纵隔恶性肿瘤,1例为结节病,1例大细胞癌,1例小细胞癌,7例腺癌,5例鳞癌,2例为慢性炎症,EBUS-TBNA细胞学阳性诊断率为78.94%(15/19)。两种方法在诊断肺门及纵膈淋巴结肿大的疾病中有差异(P<0.05)。EBUS-TBNA组细胞学诊断肺癌的敏感度为86.67％(13/15),特异度为100％。结论 EBUS-TBNA细胞学检查对肺部疾病伴有肺门及纵膈淋巴结肿大的诊断率较cTBNA高,可明显提高检查阳性率,具有重要临床意义。

Objective To evaluate the value of clinical application between cTBNA and EBUS-TBNA in diagnosis of mediastinal and hilar lymph nodes. Methods Between August 2012 and June 2014, 38 in-patients with mediastinal and hilar lymph nodes took conventional transbronchial needle aspiration( cTBNA,n=19) or endobronchial ultrasound-guided transbronchial needle aspiration(EBUS-TBNA, n=19), and we were comparing the diagnostic results of two methods. Results 19 patients in the cTBNA group were diagnosed by forceps biopsy,including 1 case of lung cancer and 162 cases of tuberculosis, 5 cases of small cell lung cancer, 6 cases of adenocarcinoma, 3 cases of squamous cell carcinoma, 1 case of large cell carcinoma, 3 cases of chronic inflammation, a cytological diagnosis of TBNA positive in 12 cases (63.16%). In the EBUS-TBNA group (n=19), the patients were diagnosed by accepting forceps biopsy, 1 case of tuberculosis, 1 case of mediastinal malignant tumor, 1 cases of sarcoidosis, 1 cases of large cell carcinoma, 1 case of small cell carcinoma, 7 cases of adenocarcinoma, 5 cases of squamous cell carcinoma, 2 cases of chronic inflammation, EBUS-TBNA cytology positive rate of diagnosis was 14 (73.68%). Two techniques in the diagnosis of mediastinal and hilar lymph nodes have statistically significant(P<0.05). The sensitinty of cytology in the diagnosis of lung caner was 86.67%(13/15),and the specificity was 100%(EBUS-TBNA). Conclusion EBUS-TBNA is an effective tool in the diagnosis of mediastinal and hilar lymph nodes and superior to cTBNA.

目的 探讨磷酸二酯酶4抑制剂对人肺泡巨噬细胞(AM)吞噬非生物性颗粒及革兰阳性菌、阴性菌能力的影响。方法 使用Ficolll-Hypaque密度梯度法将外周血单核细胞分离的静脉血,在含有2 ng/m GM-CSF的培养液中经12天诱导培养成AM替代细胞模型—单核细胞源性巨噬细胞(MDM)。用酶标仪检测MDM经磷酸二酯酶4抑制剂Rolipram预处理过夜(16~18 h)后吞噬荧光标记的非生物颗粒Beads和热灭活的流感嗜血杆菌(H.influenzae)、金黄色葡萄球菌(S.aureus)量的改变,另使用MTT法检测细胞活性。结果 成功建立的MDM细胞模型对Beads和细菌的吞噬呈时效关。Rolipram在实验浓度(10^~8~10^-5 M)下对MDM吞噬Beads、H.influenzae和S.aureus能力无明显促进或抑制作用,也不影响MDM的活性。结论 磷酸二酯酶4抑制剂不会因升高巨噬细胞内cAMP水平而影响其吞噬非生物颗粒和细菌的能力。

Objective To investigate the influence of phosphodiesterases 4 inhibitor on the phagocytosis of non-biological particles and gram-positive bacteria, gram-negative bacteria by human alveolar macrophages. Methods Peripheral blood mononuclear cells (PBMCs) were isolated from venous blood from 12 healthy volunteers using Ficoll-Hypaque density gradients. Monocytes were incubated with media containing 2 ng/ml GM-CSF for 12d to allow full differentiation into macrophage (MDM), a functionally equivalent model of human AM. MDM were pretreated with Rolipram overnight (16-18h),phagocytosis of fluorescent labeled beads and H.influenzae,S.aureus by MDM was measured using a fluostar optima fluorimeter. Cell viability was assay with MTT. Results MDM phagocytosis of beads and bacteria was a time-dependant process. Rolipram in the concentration of 10^-8-10^-5M didn't inhibit or promote phagocytosis of beads and bacteria by MDM, and didn't affect the cell viability. Conclusion Phosphodiesterases 4 inhibitor would not affect the human macrophage phagocytic capacity of non-biological particles and bacteria associated with enhanced intracellular cAMP level.

目的 确定CD4⁺CD25⁺Treg调节性T细胞在重症肺炎克雷伯菌肺炎中的表达以及意义,探讨CD4⁺CD25⁺Treg在重症肺炎克雷伯菌肺炎的免疫抑制中的调控作用。方法 通过气管内滴注肺炎克雷伯菌菌液建立重症肺炎模型。采用流式细胞仪检测CD4⁺CD25⁺Treg细胞及酶联免疫吸附法(ELISA)等方法检测各种细胞因子。结果 重症肺炎克雷伯菌肺炎大鼠的脾脏和肺中CD4⁺CD25⁺Treg的数量增加。使用了CD25抗体(PC61)去除机体内源性的CD4⁺CD25⁺Treg,分别去除脾脏和肺的94%和90%的CD4⁺CD25⁺Treg。CD25抗体组在建模4 h,12 h及24 h后,肺部MPO及血清IL-1,IL-6,MIP-2较对照组高(P<0.05),肺和BLA比对照组高(P<0.05),CD25抗体组大鼠生存率比对照组低(P<0.05)。结论 内源的CD4⁺CD25⁺Treg对大鼠抑制重症肺炎克雷伯菌肺炎的过度免疫损害反应起到保护作用。

Objective To confirm the expression and meaning of the T regular cell in the severe Klebsiella pneumonia, and to evaluate the regular and control affect in the immunologic suppression of the severe Klebsiella pneumonia. Methods To build the severe pneumonia model by intratracheally inoculated with Klebsiella pneumoniae bacteria. To check sorts of inflammation factors by the methods of ELISA and flow cytometry. Results The quantity of the CD4⁺CD25⁺Treg in the splenic and lungs of the mice with severe Klebsiella pneumonia were increased. Anti-CD25Ab(PC61) was used to remove endogenousCD4⁺CD25⁺Treg. Anti-CD25 treatment remove 90% of CD4⁺CD25⁺Treg cells. The cytokine production(IL-1β,IL-6,MIP-2)in the anti-CD25-treated group were significantly increased. And it also increased significantly in the airway neutrophil infiltration, while the survival rate had been decreased. Conclusion Endogenous CD4⁺CD25⁺Treg can provide obvious protection effect to the restraining the over immunity damage of the severe Klebsiella pneumonia for the mice.