腹膜透析液添加葛根素对氧化应激状态的影响

目的:观察在腹膜透析(PD)液中添加葛根素对PD患者腹腔局部及全身氧化应激状态的影响。方法:38例终末期肾病连续性非卧床腹膜透析(CAPD)治疗患者,随机分为实验组和对照组,每组19例。实验组在PD液中添加葛根素注射液(50mg/2 L),对照组PD液中不加药,均行标准CAPD治疗,每次2 L,4次/d,观察16 d。比较两组患者用药前后血清及透出液氧化应激指标:谷胱甘肽(GSH)、总超氧化物岐化酶(T-SOD)、丙二醛(MDA)以及透析充分性指标的变化。结果:用药后实验组患者血清及透出液GSH、T-SOD均较用药前显著升高(P<0.05),透出液MDA在用药后显著降低(P<0.05),患者血清清蛋白、总肌酐清除率(Ccr)、尿素氮清除指数(K t/V)、每天超滤量无明显变化。结论:在PD液中短期应用葛根素,可改善患者腹腔局部及全身的氧化应激状态。     

变形链球菌唾液结合区段(SBR)在大肠杆菌中的表达

目的构建含变形链球菌唾液结合区段(SBR)基因的原核表达载体,并在大肠杆菌JM109(DE3)中诱导表达。方法采用定向克隆方法将变形链球菌唾液结合区段(SBR)基因插入表达载体pcMVT 7,构建重组原核表达质粒pcMVT 7-SBR,转化大肠杆菌JM109(DE3),IPTG诱导表达,亲和层析纯化SBR目的蛋白。结果经酶切鉴定及DNA序列测定,重组质粒pcMVT 7-SBR序列及阅读框架正确,亲和层析纯化得到SBR融合蛋白。结论成功构建了含变形链球菌唾液结合区段(SBR)基因的原核表达载体,为防龋疫苗的动物实验研究奠定基础。     

生存素在子宫腺肌病异位病灶中的表达及其意义

目的了解凋亡抑制蛋白生存素（Survivin）在子宫腺肌病患者病灶、在位内膜中的表达情况。方法采用免疫组化抗生物素蛋白一过氧化物酶染色法（SP法）检测子宫腺肌病患者（22例）异位病灶、在位内膜及对照组（30例子宫肌瘤）子宫内膜标本中生存素的表达并比较。结果生存素在研究组异位病灶中广泛表达，表达的强度显著高于其在位内膜和对照组子宫内膜，增殖期高于分泌期；研究组在位内膜的生存素表达也高于对照组内膜；无论是研究组在位内膜还是对照组子宫内膜中生存素的表达均不随月经周期变化。结论生存素的过度表达可能参与了子宫腺肌病的发生与发展过程。     

急性呼吸窘迫综合征患儿肺力学特点

急性呼吸窘迫综合征(acute respiratory distress syndrome,ARDS)的病因不一,发病机制各有所异,病情进展过程中肺力学的改变存在个体差异。顺应性、压力、容量等的变化与病因、病情轻重、年龄等密切相关。正确采用肺保护性通气策略、合理调节呼吸机参数、减少呼吸机相关性肺损伤是提高ARDS救治成功率的关键。因此,在ARDS机械通气治疗中必须高度注意患儿肺力学的特点和变化。     

葡萄糖醛酸内酯对小鼠对乙酰氨基酚代谢的影响

目的:研究葡萄糖醛酸内酯对小鼠的对乙酰氨基酚代谢的影响.方法:采用HPLC测定给药后不同时间血浆药物及其代谢产物浓度,求得药物动力学参数.结果:与对照组相比,葡萄糖醛酸内酯对小鼠的对乙酰氨基酚的代谢速率和结合代谢均无影响.结论:单用葡萄糖醛酸内酯不能发生结合解毒作用.     

原发性中枢神经系统淋巴瘤的临床分析

目的 探讨原发性中枢神经系统淋巴瘤的诊断和治疗。方法 依靠临床表现和影像学检查难以与恶性胶质瘤及脑转移瘤相鉴别,只有通过免疫组织化学检查才能确诊,综合治疗是其有效治疗手段。结果 肿瘤对放疗敏感,肿瘤全部切除,辅以放疗或/和X-刀 化疗能够延长生存时间。结论 肿瘤及瘤周组织0.5cm切除是手术的关键。但尽管如此,并给予放疗和化疗,预后仍较差。     

口服甲苯咪唑微丸的药物动力学及生物利用度

目的：比较５ 只家兔单剂量口服甲苯咪唑微丸及片剂后的药动学与生物利用度。方法：采用ＲＰＨＰＬＣ 法测定血药浓度,３Ｐ８７ 程序计算药动学参数。结果：微丸的Ｃｍａｘ、Ｔ１／２ 、ＡＵＣ分别为６４３．４９ ｎｇ·ｍｌ－ １ 、１ ．０５ ｈ、８ １７０ ．９４ ｈ·ｎｇ·ｍｌ－１ 。结论：微丸与片剂的ＡＵＣ有统计学显著性差异（ Ｐ＜０ ．０５）,相对生物利用度为５２８ ．６０ ％ 。     

Simultaneous determination of oxalic, fumaric, maleic and succinic acids in tartaric and malic acids for pharmaceutical use by ion-suppression reversed-phase high performance liquid chromatography

A reliable method for the simultaneous determination of oxalic, fumaric, maleic, and succinic acids in tartaric and malic acids for pharmaceutical use by reversed-phase ion-suppression high performance liquid chromatography is presented. HPLC was achieved on a Nova-Pak C18 column by isocratic elution using water adjusted to pH 2.10-2.15 with perchloric acid, and detection was by UV adsorption at a wavelength of 210 nm. This method was found to be superior to previous liquid chromatography as well as other classical assay, and to be an attractive choice for the analysis of these compounds.     

Inhibition of bladder carcinoma angiogenesis, stromal support, and tumor growth by halofuginone.

We have previously demonstrated that halofuginone, a widely used alkaloid coccidiostat, is a potent inhibitor of collagen alpha1(I) and matrix metalloproteinase 2 gene expression. Halofuginone also suppresses extracellular matrix deposition and cell proliferation. We investigated the effect of halofuginone on transplantable and chemically induced mouse bladder carcinoma. In both systems, oral administration of halofuginone resulted in a profound anticancerous effect, even when the treatment was initiated at advanced stages of tumor development. Although halofuginone failed to prevent proliferative preneoplastic alterations in the bladder epithelium, it inhibited further progression of the chemically induced tumor into a malignant invasive stage. Histological examination and in situ analysis of the tumor tissue revealed a marked decrease in blood vessel density and in both collagen alpha1(I) and H19 gene expression. H19 is regarded as an early marker of bladder carcinoma. The antiangiogenic effect of halofuginone was also demonstrated by inhibition of microvessel formation in vitro. We attribute the profound antitumoral effect of halofuginone to its combined inhibition of the tumor stromal support, vascularization, invasiveness, and cell proliferation.     

UC 84及其衍生物的合成

合成了化合物２－氯－５－（５,６－二基－１,４－氧硫杂环己二烯－３－甲酰氨基）苯甲酸异丙酯（ＵＣ８４）,并以其为先导物合成了１１个未见报道的衍生物,活性筛选表明该类化合物有明显的抗单纯疱疹病毒（ＨＳＶ）和乙肝病毒（ＨＢＶ）活性。