运动性哮喘与中性粒细胞及白细胞介素-8关系的研究

目的 探讨中性粒细胞与白细胞介素-8（IL-8）和运动性哮喘（EIA）的关系。方法 2001-05-15—2005-12-19分别测定广东省佛山市第一人民医院呼吸内科EIA患者、非EIA患者和正常对照者运动前后周围血中性粒细胞超氧阴离子以及血浆和诱导痰中的IL一8，并进行比较分析。结果 运动前：EIA组与非EIA组中性粒细胞超氧阴离子略高于对照组，但差异无显著性，血浆及诱导痰中IL-8和MDA均高于对照组，其两组本身差异无显著性意义，但分别与对照组比较，差异均有显著性意义（P〈0．05）？运动后：（1）周围血中性粒细胞超氧阴离子水平EIA组与非EIA组较运动前均有明显提高，差异均有显著性意义（P〈0．01），正常对照组无明显变化。（2）血浆及诱导痰中IL-8、MDA水平EIA组、非EIA组和正常对照组均高于运动前，EIA组、非EIA组各自与运动前比较差异有显著性（P〈0．01），正常对照组与运动前比较差异无显著性意义（P〉0.05）。结论 中性粒细胞产生的氧自由基与白细胞介素-8在运动性哮喘的发生中起重要作用。     

苏黄止咳胶囊和阿奇霉素对支气管舒张剂治疗无效的咳嗽变异性哮喘患者中性粒细胞及白细胞介素-8水平的影响

目的探讨苏黄止咳胶囊和阿奇霉素对支气管舒张剂治疗无效的咳嗽变异性哮喘(CVA)患者气道内中性粒细胞和白细胞介素(IL)-8水平的影响。方法选择40例支气管舒张剂治疗无效的CVA患者,随机分为治疗组(n=20)和对照组(n=20),2组患者入组前24 h均记录咳嗽症状评分,检测诱导痰中白细胞中性粒细胞计数及IL-8水平,治疗组口服苏黄止咳胶囊和阿奇霉素,联合吸入信必可都保(布地奈德160μg+福莫特罗4.5μg)。对照组只吸入信必可都保(布地奈德320μg+福莫特罗9.0μg),4 w后再次测定咳嗽症状评分及诱导痰中中性粒细胞计数和IL-8的水平。结果治疗组和对照组患者治疗前咳嗽症状积分、诱导痰中中性粒细胞百分比及IL-8水平无统计学差异(P0.05);治疗后治疗组患者的诱导痰中中性粒细胞百分比、IL-8水平及咳嗽症状积分较治疗前降低(P0.05);对照组上述3项指标虽有所下降,但不及治疗组明显,组间差异有统计学意义(P0.05)。结论苏黄止咳胶囊和阿奇霉素可以降低支气管舒张剂治疗无效CVA患者气道中的中性粒细胞和IL-8水平,联合小剂量信必可都保的疗效明显优于大剂量吸入信必可都保。     

氨茶碱对COPD稳定期患者诱导痰中IL-17、IL-8及中性粒细胞的作用

目的观察IL-17、IL-8及中性粒细胞在口服氨茶碱治疗的慢性阻塞性肺疾病(COPD)稳定期患者诱导痰中的变化。方法将50例COPD稳定期患者随机分为口服氨茶碱组(治疗组)25例和常规治疗组25例,另选取我院健康体检无吸烟者10例为正常对照组。前两组出院后均给予常规家庭氧疗及肺功能锻炼,治疗组口服加用氨茶碱100 mg,3次/d,30 d后观察3组患者IL-17、IL-8及中性粒细胞的变化。结果治疗组与常规治疗组IL-17、IL-8及中性粒细胞均高于正常对照组(P<0.01),且常规治疗组高于治疗组(P<0.05)。结论氨茶碱在COPD缓解期患者的治疗中仍有明显的抗炎作用。     

辅助性T细胞17在不同类型哮喘中的状态及临床意义

目的探讨辅助性T细胞(Th)17在不同类型哮喘中的状态及临床意义。方法选取2012年1月—2015年1月延安大学附属医院收治的哮喘患者106例作为病例组,分为过敏性哮喘组50例和非过敏性哮喘组56例;另选取同期进行体检的健康成年人50例作为对照组。比较3组受试者单个核细胞中Th17、Th2及调节性T细胞(Treg)比例,血浆及诱导痰中白介素(IL)-17A、IL-10、IL-4、IL-5及IL-18水平,以及诱导痰中嗜酸粒细胞和中性粒细胞比例。结果 (1)过敏性哮喘组患者Th2比例高于非过敏性哮喘组和对照组(P0.05);非过敏性哮喘组患者Th17比例高于过敏性哮喘组,过敏性哮喘组高于对照组(P0.05)。(2)非过敏性哮喘组患者血浆IL-17A水平高于过敏性哮喘组,过敏性哮喘组高于对照组(P0.05);过敏性哮喘组患者血浆IL-4水平高于非过敏性哮喘组,非过敏性哮喘组高于对照组(P0.05)。(3)非过敏性哮喘组患者诱导痰中IL-17A、IL-18水平高于过敏性哮喘组,过敏性哮喘组高于对照组(P0.05);过敏性哮喘组患者诱导痰中IL-4水平高于非过敏性哮喘组,非过敏性哮喘组高于对照组(P0.05)。(4)过敏性哮喘组患者诱导痰中嗜酸粒细胞比例高于非过敏性哮喘组,非过敏性哮喘组高于对照组(P0.05);非过敏性哮喘组患者诱导痰中中性粒细胞比例高于过敏性哮喘组,过敏性哮喘组高于对照组(P0.05)。结论不同类型哮喘患者的Th17及其相关细胞因子水平存在差异,且非过敏性哮喘患者以上指标水平较高,Th17水平可能决定了哮喘类型。     

运动性哮喘患者中嗜酸细胞、T淋巴细胞、白三烯作用的研究

目的探讨嗜酸细胞、T淋巴细胞、白三烯和运动性哮喘(EIA)的关系.方法分别测定13例运动性哮喘患者和19例非运动性哮喘患者运动前、后血清中的嗜酸细胞阳离子蛋白(ECP)浓度和白细胞介素4(IL-4)mRNA和白细胞介素5(IL-5)mRNA值以及外周血CD+25T淋巴细胞占总淋巴细胞的百分比(CD+25%);另外测定22例运动性哮喘患者运动前和运动后2h尿液中白三烯E4(LTE4)浓度,给予白三烯受体拮抗剂扎鲁斯特治疗;并与正常对照组进行对照.结果哮喘患者运动前ECP和CD+25%与一秒钟用力呼气容积(FEV1)呈负相关(r分别为-0.79、-0.61,P均<0.01).运动性哮喘组与非运动性哮喘组之间IL-4mRNA、IL-5mRNA、CD+25%、ECP在运动前、运动后10和60min比较差异无显著性(P>0.05).运动性哮喘组、非运动性哮喘组、对照组之间最大分钟通气量(Emax)分别为(73.6±34.2)L/min、(69.1±22.1)L/min、(59.6±23.5)L/min,组间比较差异无显著性(P均>0.05).运动性哮喘组运动2h后尿液中LTE4浓度为(225.7±97.4)ng/L与运动前(152.9±89.4)ng/L比较,差异有显著性(P<0.01);服用扎鲁斯特后,运动性哮喘运动后反应与用药前比较明显减轻,其中运动后1h内FEV1下降与时间形成的曲线下面积[AUC0～60min(用药前为1.0用药后为0.3)]、运动后FEV1恢复至运动前所需时间(用药前为75min∶用药后为45min)、运动前、后FEV1下降的百分比(用药前为-22.9%∶用药后为-6.9%,P均<0.01).结论过度通气并非EIA形成的主要因素;T淋巴细胞的激活以及主要由Th2细胞分泌的细胞因子IL-4、IL-5,嗜酸细胞分泌的ECP在EIA的发生中未起主导作用;白三烯在运动性哮喘的发生中起到重要作用.     

中性粒细胞与白细胞介素8在哮喘发病中的作用

目的探讨中性粒细胞与白细胞介素8（IL-8）在支气管哮喘(简称哮喘)发病中的作用。方法对轻度哮喘患者行气道激发试验,对哮喘患者中性粒细胞超氧阴离子（O(*)/(2)）产生、血浆及诱导痰IL-8、丙二醛(MDA)水平进行测定分析。结果中、重度哮喘患者每106个周围血中性粒细胞O(*)/(2)产生水平为［（20.9±5.1）nmol/L］,与轻度哮喘患者［(15.2±4.2)nmol/L］比较,差异有显著性（P<0.01）,轻度哮喘组与正常人［(11.3±2.4)nmol/L］比较,差异有显著性(P<0.05);周围血中性粒细胞O(*)/(2)产生与气道反应性指标一秒钟用力呼气容积下降20%时所需的累积量(PD20FEV1)呈显著负相关(r=-0.693,P<0.05);急性发作期哮喘患者血浆及诱导痰IL-8水平［(585±75)ng/L、(791±103)ng/L］、MDA水平［(6.3±1.6)mmol/L、(21.8±6.3)mmol/L］,与缓解期哮喘患者血浆及诱导痰IL-8水平［(227±54)ng/L］、［(322±95)ng/L］、MDA水平［(5.4±1.0)mmol/L］、［(15.1±5.6)mmol/L］比较,差异有显著性（P<0.01）;缓解期哮喘患者与正常人血浆及诱导痰IL-8水平［(188±46)ng/L］、［(224±51)ng/L］及MDA水平［(4.1±0.4)mmol/L］、［(9.5±4.2)mmol/L］比较,差异有显著性（P<0.05）,诱导痰MDA水平与PD20FEV1呈显著负相关(r=-0.708,P<0.01);诱导痰IL-8水平与诱导痰中性粒细胞百分数呈显著正相关（r=0.838,P<0.01）。结论中性粒细胞产生的氧自由基可能参与哮喘气道炎症及气道高反应的形成。     

慢性阻塞性肺疾病道炎症变化其与肺功能相关性研究

目的 观察慢性阻塞性肺疾病急性加重期(acute exacerbation of chronic obstructive pulmonary disease,AECOPD)患者气道炎症细胞及细胞因子的变化,探讨其与肺功能恶化的相关性.方法 取AECOPD患者及健康志愿者诱导痰作细胞学计数和分类;测定肺功能,检测诱导痰上清液的肿瘤坏死因子á(tumor necrosis factor-á,TNF-á)、白介素5(interleukin-5,IL-5)等细胞因子.结果 AECOPD组的诱导痰嗜酸粒细胞百分比、中性粒细胞百分比与正常对照组比较,差异有统计学意(P<0.01);与正常对照组比较,AECOPD诱导痰上清液TNF-á浓度差异有统计学意义(P相似文献   

慢性阻塞性肺疾病患者血清和诱导痰中α-防御素1-3水平的变化及意义

目的 测定COPD急性加重期(AECOPD)和稳定期患者血清和诱导痰中?-防御素1-3(HNP1-3)水平,以探讨HNP1-3在COPD发病机制中的作用.方法 2006年10月至2007年9月收集30例AECOPD患者(AECOPD组),21例COPD稳定期患者(COPD稳定期组)及22例健康受试者(健康对照组)的血清和诱导痰,分别进行痰细胞计数和分类,用ELISA法检测血清和诱导痰中HNP1-3和白细胞介素-8(IL-8)水平,并分析HNP1-3水平与中性粒细胞、IL-8、气流阻塞之间的相关性.应用SPSS 11.5软件进行统计学分析,多组数据间比较采用单因素方差分析或卡方检验,采用Pearson或Spearman相关分析进行相关性检验.结果 AECOPD组诱导痰HNP1-3的中位数(四分位间距)[9 652(4 272～12 576)ng/L]明显高于健康对照组[4 194(700～10 505)ng/L]和COPD稳定期组[7 011(6 658～7 319)ng/L],AECOPD组、COPD稳定期组和健康对照组血清HNP1-3的中位数(四分位间距)分别为51(39～173)ng/L、135(113～241)ns/L和130(13?60)ng/L,3组比较差异无统计学意义(x2=5.75,P＞0.05).诱导痰中HNP1-3水平与IL-8、中性粒细胞数及比例呈正相关(r值为0.29～0.53,P均＜0.01),与FEV1占预计值％、FEV1/FVC和PaO2呈负相关(r值为-0.33～-0.44,P均＜0.01).结论 HNP1-3参与COPD的炎症过程.此过程与中性粒细胞和IL-8等炎性因子有关.痰中HNP1-3水平可以作为COPD严重程度的指标.     

持续性哮喘的气道炎症模式和机制探讨

对60例不吸烟的持续性哮喘患者(观察组)和20例健康查体者(对照组)进行高张盐水诱导痰试验,测定痰悬混液中细胞总数、细胞分类计数和上清液中嗜酸性粒细胞阳离子蛋白(ECP)、髓过氧化物酶(MPO)、白介素-8(IL-8)水平。结果观察组痰液标本嗜酸性粒细胞计数增多22例、正常38例,痰液嗜酸性粒细胞减少者中性粒细胞比率和IL-8水平明显高于嗜酸性粒细胞增多者和对照组(P均<0.01),嗜酸性粒细胞增多者痰ECP含量明显高于嗜酸性粒细胞正常者和对照组(P<0.01),观察组痰液MPO含量高于对照组(P<0.05),其中中性粒细胞和IL-8水平存在相关性(r=0.69,P<0.01)。认为持续性哮喘患者存在两种不同的气道炎症反应模式,非嗜酸性粒细胞性炎症反应更为常见,可能与IL-8介导的中性粒细胞的聚集、活化有关。     

慢性阻塞性肺病患者细胞因子与氧自由基的相关性

目的 探讨慢性阻塞性肺病(COPD)患者细胞因子与氧自由基相关性及对肺功能的影响.方法 选自2006年6月至2007年5月住院的COPD患者35例,急性加重期组20例(A组),稳定期组15例(B组),我院内科健康体检者10名作为对照(C组).采用ELISA法检测血清中白介素-6(IL-6)、白介素-8(IL-8)、肿瘤坏死因子(TNF-α)的质量浓度.细胞色素C还原法测外周血中性粒细胞释放超氧阴离子(O_2~-)水平.并分析O_2~-水平与细胞因子及肺功能、血气之间关系.结果 A组IL-6、IL-8、TNF-α水平显著高于B和C组(P<0.01).A组及B组患者外周血中性粒细胞释放O_2~-量显著高于C组(P<0.01).A组患者外周血中性粒细胞释放超O_2~-水平与其第1秒用力呼气容积(FEV_1)、FEV_1占预计值百分比、FEV1/用力肺活量、动脉血压分压呈明显负相关(r分别为-0.539,-0.531,-0.542,-0.652,P均<0.01).同时A组患者外周血中性粒细胞释放超O_2~-水平与血浆IL-6、IL-8、TNF-α浓度呈直线正相关(r分别为0.895,0.876,0.892,P均<0.01).结论 COPD患者急性加重期炎症细胞在细胞因子等刺激下活化,释放氧化物质增多,对导致COPD急性加重期肺功能恶化可能起重要作用.     

诱导痰中白介素8和可溶性细胞间黏附分子1动态变化与慢性阻塞性肺疾病气道炎症的相关性

目的 观察慢性阻塞性肺疾病(chronic obstructive pulmonary disease,COPD)不同时期诱导痰中白介素8(IL-8)、可溶性细胞间黏附分子1(sICAM-1)水平的变化情况,探讨两者对COPD病情评估所起的作用.方法 20名健康人为对照组,40例COPD患者,采用ELISA法检测对照组...     

布地奈德福莫特罗吸入治疗咳嗽变异性哮喘及患者EOS、IL-8、IL-10的表达

目的研究布地奈德福莫特罗吸入治疗咳嗽变异性哮喘疗效及患者嗜酸性粒细胞(EOS)、IL-8、IL-10的表达。方法以我院2013年1月~2014年6月收治的咳嗽变异性哮喘患者86例为研究对象,另选取来我院体检的健康志愿者80例为对照组。对比两组EOS、中性粒细胞、白细胞介素-8(IL-8)、白细胞介素-10(IL-10)的表达水平,研究组治疗后对比治疗前、治疗后以及停药4个月后OS、IL-8、IL-10的表达以及咳嗽症状评分与ACT哮喘评价。结果研究组中性粒细胞个数与对照组相比显著更多;研究组患者痰液中EOS、IL-8、IL-10的表达水平均显著高于对照组;研究组患者用药结束后痰液中EOS、IL-8、IL-10的水平显著降低,但在停药四个月后又明显升高,不过较治疗前依旧较低;研究组患者停药四个月后咳嗽症状评分显著低于治疗前,且ACT哮喘评价也显著高于治疗前,以上差异具有统计学意义(P0.05)。结论布地奈德福莫特罗吸入能有效降低患者EOS、IL-8、IL-10的水平,极大改善哮喘症状。     

咳嗽变异性哮喘患者诱导痰中神经生长因子和白细胞介素-4水平及气道炎症特征初探

目的 通过观察咳嗽变异性哮喘(CVA)患者诱导中神经生长因子(NGF)和IL-4水平,初步探讨咳嗽变异性哮喘的气道炎症特征.方法 选咳嗽变异性哮喘患者36例及健康体检者23例,对受试者进行痰诱导,查诱导痰中细胞分类计数,酶联免疫吸附法检测诱导痰中NGF和IL-4水平.结果 (1)咳嗽变异性哮喘患者诱导痰中嗜酸性粒细胞百分数为8%,显著高于健康体检者(1%),差异有统计学意义(P＜0.001).其中13例患者应用糖皮质激素联合长效β2受体激动剂(布地奈德/福莫特罗,每吸160μg/4.5μg,2吸/d)治疗1个月后,咳嗽症状明显好转,诱导痰中嗜酸性粒细胞百分数为2%,显著低于治疗前(5%),差异有统计学意义(P＜0.05);但仍高于健康体检者.(2)咳嗽变异性哮喘患者诱导痰中NGF和IL-4浓度高于健康体检者,差异有统计学意义(P＜0.05).其中13例患者经上述治疗后诱导痰中NGF和IL-4浓度下降,差异有统计学意义(P＜0.05);但仍高于健康体检者.(3)相关性分析:诱导痰中嗜酸性粒细胞计数与诱导痰上清中NGF、IL-4浓度呈正相关(r分别为0.397、0.332,P＜0.01).诱导痰上清中NGF与IL-4浓度呈正相关(r=0.728,P＜0.01).结论 神经-免疫机制与咳嗽变异性哮喘嗜酸性粒细胞性炎症密切相关,NGF和IL-4参与并介导了这一炎症.糖皮质激素联合长效β2受体激动剂吸入治疗,能显著降低诱导痰中NGF、IL-4和嗜酸性粒细胞水平,减轻嗜酸性粒细胞性炎症.

Abstract：

Objective To observe sputum cytology counts, the levels of nerve growth factor (NGF) and IL-4 in cough variant asthma (CVA) patients and the change of their levels after using glucocorticoids combined with β2-adrenergic agonists one month, and to investigate CVA's characteristics of airway inflammation. Methods Totally 36 patients with untreated CVA were selected, as well as 23 healthy controls. Coughed up sputum cells were obtained and HE strained for differential cell counting in each enrolled patient. In induced sputum's supernatant, the levels of NGF and IL-4 were determined by ELISA.Results Before treatment, CVA patients had a median eosinophils (EOS) percentage of 8%, which was significantly higher than that after treatment (2%, P＜0.05) and in healthy control group (1%, P＜0. 001). The levels of NGF and IL-4 in induced sputum of CVA group were (9. 50 ± 1.69) ng/L and (257.37 ± 53.57) ng/L. After treatment, they were (8.78±1.02) ng/L and (228.60 ±52.93)ng/L in CVA group, (6.98±0.69) ng/L and (166.44±24.75) ng/L in healthy control group. The levels of NGF and IL-4 before and after treatment in the CVA group , as compared with the healthy control group, had statistically significant differences (all P＜0.001). In CVA group before and after treatment, the level of NGF and IL-4 paired difference was significant (P＜0.001). The percentage of induced sputum EOS correlated with sputum supernatant concentrations of NGF and IL-4 (P ＜ 0.01). In induced sputum supernatant, the concentrations of NGF and IL-4 were significant correlated (P＜0.01). Conclusions Glucocorticoid joint long-term β2 agonist inhaled treatment significantly reduced NGF, IL-4 and EOS levels and reduced eosinophilic inflammation, which are closely related with the nerve-immune mechanism, NGF as well as IL-4 participated the inflammation. Induced sputum examination is non-invasive, economical,simple, easily accepted by patients, and repeatable, widely used in clinical.     

染氟大鼠成骨细胞内钙调蛋白表达的变化

目的观察不同浓度的氟对体外培养大鼠成骨细胞内钙调蛋白(CaM)表达的影响。方法采用骨组织块法分离培养新生Wistar大鼠颅骨成骨细胞,然后将不同浓度的氟作用于大鼠成骨细胞,染氟培养48 h后,采用半定量RT-PCR方法分析CaM基因的表达,免疫细胞化学法检测CaM蛋白的表达,采用生物化学的方法检测超氧化物歧化酶(SOD)、超氧阴离子自由基、丙二醛(MDA)的含量。结果与对照组比较,各氟组CaM基因及蛋白的表达均显著增加;与对照组相比,各氟组成骨细胞内SOD含量明显降低,超氧阴离子自由基含量明显增高,差异均具有统计学意义,而MDA含量无明显变化。结论氟在一定浓度范围内可引起培养成骨细胞的SOD含量明显降低、超氧阴离子自由基含量明显增高,且对成骨细胞的CaM蛋白的表达具有促进作用。     

Cardiac release of chemoattractants after ischaemia induced by coronary balloon angioplasty.

OBJECTIVE--To investigate the release of chemoattractants after myocardial ischaemia during balloon angioplasty. DESIGN--Sampling of femoral arterial and coronary sinus blood before and immediately after the first balloon inflation during angioplasty. In a study group of 16 patients the balloon was kept expanded for two minutes, whereas in a control group of eight patients the first balloon inflation was brief (< 10 s). MAIN OUTCOME MEASURES--Chemotaxis of neutrophils from healthy donors towards patient plasma (Boyden chamber), superoxide anion production by normal neutrophils after incubation with patient plasma (cytochrome C reduction). RESULTS--In the study group, coronary sinus plasma after balloon deflation was more chemoattractive to normal neutrophils (median relative increase 24% (quartiles: 4%, 45%), p = 0.008) and induced a higher superoxide anion production in normal neutrophils (44% (10%, 97%), p = 0.013) than arterial plasma. Concomitantly, the degree of activation of patient neutrophils was increased in coronary sinus blood compared with arterial blood, as shown by an increased proportion of neutrophils reducing nitro-blue tetrazolium (21% (9%, 38%), p = 0.006) and a decreased neutrophil filter-ability (-16%(-3%, -40%), p = 0.003) in coronary sinus blood. In the study group before balloon inflation and in the control group before and after balloon inflation differences between arterial and coronary sinus blood were not significant. Signs of ischaemia (lactate release, ST segment changes) were only detected in the study group. CONCLUSION--After transient myocardial ischaemia during balloon angioplasty there is a local release of chemoattractants, associated with neutrophil activation.     

支气管哮喘患者诱导痰中基质细胞衍生因子的表达及其作用

目的 测定支气管哮喘(简称哮喘)患者在糖皮质激素(简称激素)治疗前后诱导痰中基质细胞衍生因子-1(SDF-1)和白细胞介素(IL)-17的水平,探讨SDF-1在哮喘发病机制中的作用.方法 收集2009年6月至2010年9月郑州大学第一附属医院门诊及住院的慢性持续期的哮喘患者99例(按病情严重程度分为轻、中、重度组)及健康体检者30名,哮喘患者在回答哮喘控制问卷(ACQ)后,两组研究对象分别进行肺功能检测和诱导痰检查,记录FEV1占预计值%,行诱导痰炎症细胞分类计数,酶联免疫吸附试验(ELISA)法检测诱导痰中SDF-1和IL-17水平;所有哮喘患者均参照支气管哮喘指南给予规范的吸入激素为主的治疗,4周后测定诱导痰中SDF-1、IL-17的水平及炎症细胞比率.结果 轻、中、重度持续组的ACQ评分及FEV1占预计值%差异均有统计学意义(F值分别为79.271和457.448,均P<0.01).治疗前哮喘组诱导痰嗜酸粒细胞比率、IL-17水平及SDF-1水平均高于健康对照组(均P<0.01);重度哮喘患者诱导痰中两种炎症细胞比率及SDF-1和IL-17水平均高于轻度哮喘患者(均P<0.05).哮喘患者FEV1占预计值%与诱导痰中嗜酸粒细胞、中性粒细胞比率均呈负相关(r值分别为-0.316和-0.409,均P<0.05);诱导痰中SDF-1与嗜酸粒细胞比率及中性粒细胞比率呈正相关(r值分别为0.875和0.716,均P<0.01);诱导痰中IL-17与嗜酸粒细胞及中性粒细胞比率呈正相关(r值分别为0.878和0.846,均P<0.01);诱导痰中SDF-1与IL-17水平呈正相关(r=0.872,P<0.01).治疗后哮喘患者诱导痰中两种炎症细胞比率及SDF-1和IL-17水平均低于治疗前患者(均P<0.01);治疗后未控制组哮喘患者诱导痰中性粒细胞比率、SDF-1水平和IL-17水平明显高于完全控制组(均P<0.05).结论 SDF-1和IL-17通过募集炎症细胞,特别是中性粒细胞参与了哮喘气道炎症的发生,SDF-1可作为哮喘患者临床病情判定和疗效观察的参考指标.

Abstract：

Objective To evaluate concentrations of stromal cell-derived factor 1 (SDF-1) and IL-17 in induced sputum supernatants from asthmatic patients before and after treatment with glucocorticosteroids. Methods Induced sputum was collected from 30 healthy controls and 99 patients with chronic persistent asthma from 2009-2010. Sputum samples were obtained before and after 4 week treatment with inhaled glucocorticosteroids. The sputum concentrations of SDF-1 and IL-17 were measured by ELISA. Results The FEV1% and the asthma control score of patients with severe asthma were decreased as compared with patients with moderate persistent and mild persistent asthma (F=457.448 and 79.271, all P<0.01). The concentrations of SDF-1 ,IL-17 and the percentage of eosinophils were increased in asthma group compared with control subjects (all P<0.01),but the percentage of sputum neutrophils was lower than that in the healthy controls(P<0.01). The percentage of sputum neutrophils and eosinophils and the level of SDF-1 and IL-17 in patients with severe persistent asthma were significantly higher than those in patients with mild persistent asthma (all P<0.05). The percentage of sputum neutrophils and eosinophils were negatively correlated with FEV1%(r=-0.409 and -0.316,all P<0.05). The levels of IL-17 and SDF-1 were positively correlated with the percentage of sputum neutrophils and eosinophils (all P<0.01). The levels of IL-17 were positively correlated with the levels of SDF-1(r=0.872, P<0.01).After glucocorticosteroid therapy, the percentage of eosinophils and neutrophils, the levels of IL-17 and SDF-1 decreased significantly in all patients(all P<0.01), while the percentage of sputum neutrophils and the levels of IL-17and SDF-1 in uncontrolled patients increased significantly compared with the controlled and partly controlled groups(all P<0.05). Conclusions SDF-1 and IL-17 may contribute to airway inflammation in asthma by chemotactic activity towards neutrophils. The concentration of SDF-1 may be used to evaluate the inflammation and the therapeutic effects.     

Effect of nuclear factor kappa B on intercellular adhesion molecule-1 expression and neutrophil infiltration in lung injury induced by intestinal ischemia/reperfusion in rats

AIM:To investigate the role of nuclear factor kappa B(NF-κB) in the pathogenesis of lung injury induced byintestinal ischemia/reperfusion (I/R),and its effect onintercellular adhesion molecule-1 (ICAM-1) expressionand neutrophil infiltration.METHODS:Twenty-four Wistar rats weredivided randomly into control,I/R and pyrrolidinedithiocarbamate (PDTC) treatment groups,n=8 ineach.I/R group and PDTC treatment group receivedsuperior mysenteric artery (SMA) occluding for 1 h andreperfusion for 2 h.PDTC group was administrated withintraperitoneal injection of 2% 100 mg/kg PDTC 1 hbefore surgery.Lung histology and bronchia alveoluslung fluid (BALF) protein were assayed.Serum IL-6,lungmalondialdehyde (MDA) and myeloperoxidase (MPO) aswell as the expression level of NF-κB and ICAM-1 weremeasured.RESULTS:Lung injury induced by intestinal I/R,wascharacterized by edema,hemorrhage and neutrophilinfiltration as well as by the significant rising of BALFprotein.Compared to control group,the levels of serumIL-6 and lung MDA and MPO increased significantly in I/Rgroup (P=0.001).Strong positive expression of NF-κBp65 and ICAM-1 was observed.After the administrationof PDTC,the level of serum IL-6,lung MDA and MPOas well as NF-κB and ICAM-1 decreased significantly(P<0.05) when compared to I/R group. CONCLUSION:The activation of NF-kB plays animportant role in the pathogenesis of lung injury inducedby intestinal I/R through upregulating the neutrophilinfiltration and lung ICAM-1 expression.PDTC as aninhibitor of NF-kB can prevent lung injury induced byintestinal I/R through inhibiting the activity of NF-kB.     

辛伐他汀联合运动训练治疗稳定期慢阻肺合并代谢综合征疗效及检查指标1657

目的：观察分析辛伐他汀联合运动训练治疗稳定期慢性阻塞性肺疾病合并代谢综合征的临床疗效。方法选取2013年2月-2014年8月来我院就诊治疗的84例稳定期慢阻肺合并代谢综合征患者,随机分为对照组和观察组,对照组患者采用常规治疗,观察组患者在常规治疗基础上加用辛伐他汀及运动训练治疗,均持续治疗半年,比较两组患者治疗前、后的肺功能、CAT得分、外周血炎症水平及治疗后胰岛素抵抗及6 min步行距离情况。结果两组患者的一般情况及治疗前、后的肺功能指标无统计学差异,P>0．05；观察组患者治疗后CAT得分(23．7±1．3分)、胰岛素抵抗指数(2．5±0．7)、6min步行距离(361．4±38．7m)较对照组患者治疗后CAT得分(24．8±1．6分)、胰岛素抵抗指数(4．2±0．8)、6min步行距离(279．9±56．3m)具有明显优势,P<0．05；观察组患者治疗后的IL-6、IL-8等炎症因子水平均明显低于对照组患者,P<0．05。结论辛伐他汀联合运动训练治疗稳定期慢阻肺合并代谢综合征虽不能改善患者肺功能,但其可有效降低患者外周血炎症因子水平,提高运动能力和CAT评分,降低患者的胰岛素抵抗,提高患者的生命质量。