多索茶碱对慢性阻塞性肺疾病患者血清细胞因子的影响

[目的]研究多索茶碱对慢性阻塞性肺疾病患者血清IL-8、TNF-a、IL-10的影响。[方法]慢性阻塞性肺疾病急性发作期患者随机分为两组,治疗组采用多索茶碱治疗,对照组采用氨茶碱治疗,治疗前后观察血清细胞因子(IL-8、TNF-α、IL-10)、肺功能、血气分析的变化。[结果]两组治疗后均能改善患者肺功能及血气分析指标,改善血清IL-8、TNF-α、IL-10的表达,且治疗组优于对照组。[结论]多索茶碱能明显改善COPD患者肺功能及血气分析指标,对血清IL-8、TNF-α、IL-10的改善明显优于氨茶碱组。     

T-helper 1-related chemokines in the exacerbation of childhood asthma.

BACKGROUND: T-helper (Th) 2 cytokines are thought to mediate most of the allergic inflammatory responses associated with atopic asthma. But the Th1-related chemokine, interferon-inducible protein 10 (IP-10)/CXCL10, was the predominant chemokine measured during human allergic pulmonary late-phase reaction. The aim of the present study was to evaluate the role of Th1- and Th2- related chemokines in the pathogenesis of asthma exacerbation. METHODS: Plasma levels of the Th2-related C-C chemokine I-309 (CCL1), the Th1-related CXC chemokines IP-10, and the monokine induced by interferon-gamma (Mig)/CXCL9 were measured in patients with stable asthma. RESULTS: These results were compared to the results measured prior to, and after corticosteroid treatment, in patients who experienced asthma exacerbations. A significant increase in the plasma levels of IP-10 and Mig, but not I-309, were found in patients with an acute exacerbation in contrast to patients with stable asthma. Plasma levels of IP-10 and Mig were significantly higher in patients during an acute asthma exacerbation than during a subsequent convalescent period. CONCLUSIONS: The Th1-related CXC chemokines IP-10 and Mig may be useful inflammatory markers of asthma exacerbation in children.     

口服鱼油对急性胰腺炎大鼠炎性反应及免疫功能的影响

目的:评价添加鱼油的肠内营养对急性胰腺炎(AP)大鼠炎症反应及免疫功能的影响。方法:大鼠70只随机分为4组,分别为无胰腺炎组、AP-普通营养组,AP-玉米油营养组,AP-鱼油营养组。建立AP模型,术后第7天检测外周血中CD4 及CD8 细胞占总淋巴细胞的比例及CD4 /CD8 比值,TNF-αI、L-10浓度和IL-10/TNF-α变化。结果:AP-鱼油营养组大鼠较其它组TNF-αI、L-10浓度明显降低,且下调IL-10/TNF-α比值,CD4 /CD8 比值明显升高。结论:口服添加鱼油的肠内营养在减轻AP大鼠的炎性反应,调节其免疫功能方面优于其它组营养成分。     

不同方法对未成熟树突状细胞体外诱生的研究

目的筛选最佳体外诱生大鼠未成熟树突状细胞(imDC)的方法。方法用低剂量(0.2ng/mL)粒细胞巨噬细胞集落刺激因子(recombination rat GM-CSF,rrGM-CSF)体外诱导imDC;用常规剂量(5ng/mL)的GM-CSF加大鼠白细胞介素-4(recombinationratIL-4,rrIL-4)(5ng/L)体外诱导imDC;rrGM-CSF rrIL-4再加大鼠白细胞介素-10(recombination rat IL-10,rrIL-10)(10ng/mL)体外诱导imDC;第13天收获细胞,观察形态;流式细胞仪检测表面抗原;混合淋巴细胞培养(MLR)检测DC刺激同种异体T淋巴细胞的能力,培养上清白细胞介素-12(IL-12)的浓度和细胞增殖情况等方面进行考察,对比筛选。结果低剂量GM-CSF组和IL-10组DC与GM-CSF IL-4组DC相比,符合imDC的特点;GM-CSF IL-4组DC表现成熟DC的特点,但细胞增殖情况低剂量GM-CSF组明显低于GM-CSF IL-4 IL-10组,两组相比差别具有显著性。结论GM-CSF IL-4 IL-10组是最佳诱导imDC的方法。     

系统性红斑狼疮患者Th1/Th2细胞因子的研究

目的检测系统性红斑狼疮(SLE)患者外周白细胞介素-4(IL-4),白细胞介素-10(IL-10)、干扰素-γ(IFN-γ)和白细胞介素-2(IL-2)水平,探讨SLE患者的发病与Th1/Th2优势活化状态之间的关系。方法采用酶联免疫吸附法(ELISA)测定35例SLE患者和15名健康志愿者PBMC培养上清IL-4、IL-10、IL-2、IFN-γ水平。结果活动期SLE患者IL-4、IL-10水平明显高于非活动期、正常对照组,差异有显著性(P<0.01)。活动期SLE患者IL-2水平明显低于非活动期、正常对照组,差异有显著性(P<0.01)。IFN-γ水平3组间差异无显著性(P>0.05)。结论Th2型细胞因子介导的免疫应答在活动期SLE的发病机制中占主导地位。活动期SLE患者存在分泌型Th1细胞因子的细胞活化减弱。     

氯诺昔康用于食管癌术后镇痛对IL-2、IL-6、 IL-10的影响

目的 观察氯诺昔康用于食管癌术后镇痛对白细胞介素-2(IL-2)、白细胞介素-6(IL-6)、白细胞介素-10(IL-10)的影响.方法 根据术后静脉自控镇痛给药方式不同,将24例食管癌根治术患者随机分为两组,L组(氯诺昔康组,n=12):氯诺昔康40 mg 氟哌利多5 mg;M组(吗啡组,n=12):吗啡40 mg 氟哌利多5 mg.观察患者术后4、24、48 h镇痛评分(visual analogue scale,VAS)及测定外周静脉血IL-2、IL-6、IL-10及TNF-α在诱导前(T1)、术毕(T2)、术后24 h(T3)及术后48 h(T4)的表达水平.结果 两组患者术后各时间点VAS 评分、两组患者诱导前血浆中IL-2、IL-6、IL-10、TNF-α之间比较及两组患者术后各时间点TNF-α与诱导前比较,无显著性差异(P＞0.05);M组IL-2在术后各时间点较术前有显著降低(P＜0.05);IL-6、IL-10在术后各时间点较术前则有显著升高(P＜0.05);L组IL-2在术后各时间点较术前有显著降低(P＜0.05);IL-6、IL-10在术后T2、T3时间点较术前有显著升高(P＜0.05);L组较M组IL-10在T4有显著降低(P＜0.05).结论 氯诺昔康用于食管癌术后镇痛疗效与吗啡相当,且对免疫功能的影响优于吗啡.     

Interleukin-10 in cutaneous disorders: implications for its pathophysiological importance and therapeutic use

Abstract With its antiinflammatory and immunosuppressive properties interleukin-10 (IL-10) plays a dominant role in several immune reactions including regulatory mechanisms in the skin. The overexpression of this mediator has been reported in some inflammatory dermatoses as well as in various skin tumors. These observations are of importance since they may explain the limitation of hyperinflammatory conditions as in eczemas and erythemas on the one hand and the suppression of an adequate antitumor response and thereby the progression of malignant tumors on the other hand. Moreover, elevated IL-10 expression might contribute to an enhanced risk of development of microbacterial superinfections, a frequent finding in several dermatoses, and might also be involved in the pathogenesis of connective tissue diseases. In contrast, recent studies indicate a relative IL-10 deficiency in psoriasis. Early clinical data from psoriatic patients treated with recombinant human IL-10 suggest the therapeutic potential of this cytokine and underline its impact on the regulation of the skin immune system. Received: 11 October 1999 / Accepted: 19 October 1999     

血细胞彗星电泳在遗传毒性评价中的应用(英文)

目的:用彗星实验检测不同种类化学物在单细胞水平上DNA的损伤情况。方法:体外彗星实验。结果:L-4氧代赖氨酸及10-羟基喜树碱不能直接引起DNA的损伤。ST1435剂量高达4mmol·L~(-1)时才能对DNA产生损伤。二甲基亚砜,作为一种常用溶剂,当其浓度小于2％时,不增加对DNA的损伤,但当浓度≥4％时,可产生具有剂量-效应关系的DNA损伤。博莱霉素和丝裂霉素对DNA有强的剂量-效应关系。结论:慧星实验作为检测可疑化合物遗传毒性的工具,具有快速,灵敏,简单,重复性好及价廉的优点。     

Effect of the CYP2D6*10 genotype on venlafaxine pharmacokinetics in healthy adult volunteers

AIMS: Interindividual differences in the pharmacokinetics of venlafaxine, a new antidepressant, were shown during early clinical trials in Japan. Venlafaxine is metabolized mainly by CYP2D6 to an active metabolite, O-desmethylvenlafaxine (ODV). Therefore, the influence of the CYP2D6 genotypes on venlafaxine pharmacokinetics was examined in a Japanese population. METHODS: Twelve adult Japanese men in good health participated in this study. Genomic DNA was isolated from peripheral lymphocytes, and the CYP2D6 genotypes were determined by codon 188C/T, 1934G/A, 2938G/A and 4268G/C mutations using endonuclease tests based on PCR and by Xba I-RFLP analysis. Subjects were categorized into the following 3 groups (n=4 in each group); Group1: CYP2D6*10/*10, *5/*10, Group2: CYP2D6*1/*10, *2/*10 and Group3: CYP2D6*1/*1, CYP2D6*1/*2. Venlafaxine (25 mg, n=6; 37.5 mg, n=6) was administered orally at 09.00 h following an overnight fast. Plasma concentrations of venlafaxine and ODV were monitored by h.p.l.c. for 48 h. RESULTS: The Cmax and AUC of venlafaxine were 184% and 484% higher in the group 1 subjects than in the group 3 subjects, and 101% and 203% higher in the group 1 than in the group 2, respectively. CONCLUSIONS: These results suggest that CYP2D6*10 influences the pharmacokinetics of venlafaxine in a Japanese population.