Oxidative stress in patients with asthma and its relation to uncontrolled asthma

This study aims to evaluate markers of oxidative stress in Tunisian asthmatic patients and investigate whether their markers are correlated with uncontrolled asthma.This prospective cohort study was conducted on 48 healthy subjects and 60 patients with asthma (34 patients with controlled asthma and 26 patients with uncontrolled asthma). The levels of malondialdehyde (MDA), advanced oxidation protein products (AOPP), and glutathione (GSH), as well as the activities of glutathione peroxidase (GPx) and superoxide dismutase (SOD), were estimated in plasma by spectrophotometry.Asthmatic patients have significantly higher plasmatic levels of MDA and AOPP than healthy controls (p < 0.001). Lower GSH level and GPx activity were found in patients with asthma compared to controls (p < 0.001). In contrast, higher SOD activity was noted in asthmatic patients (p < 0.001).The comparison among the patients with controlled asthma and uncontrolled asthma revealed increased MDA and AOPP levels and SOD activity (p < 0.001) as well as a decreased GSH level and GPx activity (p = 0.004, p = 0.019) in patients with uncontrolled asthma. Spirometry level was significantly correlated with SOD activity (r = 0.447; p = 0.010), whereas no significant correlations were found with the other parameters (MDA, AOPP, GSH, and GPx).Asthmatic patients, especially those with uncontrolled asthma, suffer a high degree of reactive oxygen species (ROS) formation causing considerable oxidative stress. Increased MDA level and SOD activity and reduced GPx activity were predictors of poorly controlled asthma.     

韩树人教授谈“哮喘专主于风”

哮喘为临床的常见病、多发病,历来为医家所重视。韩树人教授在研究继承传统理论的基础上形成了自己的学术观点,提出了“哮喘专主于风”的理论。详细分析了临证时的分型特点,阐明哮喘发作程度有轻重之分,证型有寒热之别,缓解时肺脾肾各有所虚,但辨证总须与“风”紧密联系,抓住这一中心环节进行遣方用药,为临床工作提供了新的思路。      

儿童哮喘糖皮质激素吸入依从性观察

目的：观察儿童哮喘长期吸入糖皮质激素的依从性。方法：收治哮喘患儿168例,给予糖皮质激素吸入治疗,通过电话、短信、复诊、问卷调查形式,记录不依从原因。结果：168例患儿中不依从65例（38．69％）,其主要原因：家长害怕激素不良反应28例（43．08％）;自行中断15例（23．08％）;吸入方法不当14例（21．54％）;不合作6例（9．23％）;因经济原因2例（3．08％）。结论：儿童哮喘长期吸入糖皮质激素依从性不高,是哮喘控制不理想的主要原因。     

细粒棘球蚴绦虫感染对哮喘大鼠血清嗜酸性粒细胞趋化因子和可溶性P选择素的影响

目的 建立细粒棘球蚴绦虫感染并发过敏性哮喘实验动物模型及探讨细粒棘球蚴绦虫感染对过敏性哮喘的作用.方法 24只Wistar大鼠,随机分为3组,A组为正常对照组,B组为单纯哮喘组,C组为细粒棘球蚴绦虫感染并发哮喘组.C组大鼠经腹腔注射感染细粒棘球蚴.70d后,以卵白蛋白(OVA)分别对B组、C组大鼠进行致敏及激发,建立过敏性哮喘模型.各组大鼠取肺组织作病理切片,观察大鼠肺组织的炎症变化,收集支气管肺泡灌洗液(BALF),计数淋巴细胞(Lymphocyte)和嗜酸性粒细胞(EOS)的个数,采用酶联免疫吸附试验(ELISA)检测大鼠血清Eotaxin-2、Eotaxin-3及sP-selection的水平.结果 与B组比较,C组大鼠BALF中Lymphocyte和EOS数明显减少(P<0.05),血清Eotaxin-2、Eotaxin-3及sP-selection的水平明显下降(P<0.05).各组大鼠血清Eotaxin-2水平与BALF中EOS数量密切相关(r=0.829),血清Eotaxin-3和sP-selection水平与EOS数量均呈正相关关系,r分别为0.562和0.315(P<0.05).结论 细粒棘球蚴绦虫感染对过敏性哮喘的发生有抑制作用.     

哮喘平冲剂对哮喘豚鼠模型肺组织形态学的影响

目的:探讨哮喘平冲剂对哮喘豚鼠模型肺组织的形态学影响。方法:采用卵蛋白致敏哮喘豚鼠模型,观察实验过程中哮喘豚鼠的一般情况及肺组织形态学变化。结果:各治疗组豚鼠的一般情况明显优于模型组,且经哮喘平冲剂治疗后哮喘豚鼠气道炎症细胞明显减少;支气管平滑肌未肥厚;哮喘平冲剂能明显改善支气管上皮损伤,粘液腺增生等病理改变。结论:哮喘平冲剂治疗哮喘的作用机理与改善肺组织形态学变化有关。     

小儿肺热咳喘颗粒联合孟鲁司特钠颗粒治疗婴幼儿哮喘疗效观察

正哮喘的发病机制十分复杂,目前尚未完全清楚,其治疗亦仅限于控制症状,常采用茶碱药物、激素、β受体激动剂等。支气管哮喘治疗上传统把糖皮质激素作为治疗哮喘的一线药物~([1]),但由于糖皮质激素依从性较差,加上茶碱药物、β受体激动剂等副作用,导致控制效果不佳。由于支气管哮喘病程长,且病情反复发作,甚至出现病情加重,从而降低生活质量~([2])。白三烯在哮喘的发病机制中起重要作用,是支气管哮喘发病过程中重要的炎性介质,在气道炎症、哮喘     

Metabolic acidosis due to inhaled salbutamol toxicity: A hazardous side effect complicating management of suspected cases of acute severe asthma

Metabolic acidosis has seldom been reported during treatment of asthma with use of beta agonist but not with much clinical consequence. We report two cases of metabolic acidosis with hyperventilation as a direct effect of salbutamol that caused difficulty in assessment and management of their respiratory symptoms which resolved with appropriate tapering of beta agonist.     

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近年来花粉过敏的发病率逐年增高,已经成为世界各国所面临的重要的卫生问题之一。文章从花粉症的历史和流行病学、主要症状、诊断和鉴别诊断及治疗和预防等方面进行了较详细的介绍。