黄附子中性多糖和酸性蛋白多糖的分离、纯化与鉴定

目的 :探讨黄附子中的糖复合物 ,为深入研究和开发利用附子提供有用资料。方法 :采用热水抽提、乙醇沉淀、DEAE C32及SephadexG75柱层析等方法分离黄附子中的糖复合物 ,用酚 硫酸法、Folin 酚法及硫酸 咔唑法测定其糖、蛋白质、葡萄糖醛酸的含量。结果 :从黄附子中得到两种糖复合物 ,一种为中性多糖 ,含量为 3% ;另一种为酸性蛋白多糖 ,含量为 1% (其中糖含量 97%、蛋白质含量 3%、葡萄糖醛酸含量 9% )。结论 :黄附子中两种糖复合物的获得有助于研究附子抗癌、抗衰老和增强免疫机能的作用。     

Examination of lymphatic transport of puerarin in unconscious lymph duct-cannulated rats after administration in microemulsion drug delivery systems

The potential for microemulsion drug delivery systems to improve the lymphatic transport and the portal absorption of a poorly water-soluble drug, puerarin, were investigated in lymph-cannulated rats. SD rats were operated for lymph duct cannulation and were orally dosed with 3 ml puerarin microemulsion (0.6 mg/g, n = 6). The lymph and plasma were collected over 8 h and the concentrations of puerarin and triglyceride were measured. Similarly, control rats (non-lymph-cannulated, n = 6) were dosed orally with puerarin microemulsion and subsequently with puerarin injection intravenously. Plasma and lymph samples were analysed by HPLC. Lymph triglyceride was measured using an enzymatic colorimetric technique. The extent of lymphatic transport via the thoracic duct was 0.06% of the dose for the animals dosed with puerarin microemulsion. The systemic bioavailability of oral puerarin co-administered with lipid was only 16% in the lymph duct-cannulated rats compared with 40% in the controls. These data clearly indicate that the lymphatic transport process contributes significantly to intestinal absorption of puerarin and subsequently to its systemic bioavailability. The results imply that the pharmaceutical scientist may use microemulsion formulations to optimize lymph-targeting drug delivery systems, by improving the extent of lymphatic transport.     

基层医院儿科住院患儿药物利用分析

目的:评价我院儿科住院患儿药物利用现状,为临床合理用药提供依据.方法:对我院2009年度儿科住院部的药品销售金额、用药频度(DDDs)等进行统计分析.结果:2009年度共使用药物189个,品种数居前两位的是抗微生物药物、呼吸系统药物;销售金额居前的是抗微生物药物、水电解质药物;用药频度位于前16位的治疗药品中,抗微生物...     

Tolerability,pharmacokinetics and pharmacodynamics of CMAB001, an anti-CD11a antibody,in Chinese healthy volunteers and psoriatic patients

Aim:

To evaluate the pharmacokinetics (PK), pharmacodynamics (PD) and primary tolerability of an anti-CD11a monoclonal antibody (CMAB001) in Chinese healthy volunteers and psoriatic patients.

Methods:

Two open-label studies were conducted. One was a parallel-group, single-center, dose-escalation test, including 24 healthy adult volunteers from 18 to 45 years in age. All subjects randomly received a single subcutaneous injection dose of 0.5, 1.0 or 2.0 mg/kg. The other was a multiple-dose study: 10 adult psoriatic patients were administered weekly subcutaneous injections of 1.0 mg/kg for 7 weeks.

Results:

CMAB001 was well tolerated in the single- and multiple-dose studies. Slow absorption was observed in both studies. In the single-dose study, the concentration of CMAB001 reached its highest level 2 d later after the injection, and the C_max increased in an approximate dose-proportionate manner, while the area under curve (AUC) showed much greater than dose-proportionate increase. In the multiple-dose study, the steady-state serum concentration level was attained following the 4th injection.

Conclusion:

CMAB001 exhibited a nonlinear pharmacokinetic profile over the dose range from 0.5 to 2.0 mg/kg, and was well tolerated in healthy volunteers and psoriatic patients.     

HPV6bL1-TpN15嵌合基因原核表达系统的构建

目的 分别从梅毒螺旋体(Treponema pallidum,Tp)临床菌株和尖锐湿疣(cA)组织中扩增人乳头瘤病毒(HPV)6b型L1和TpN15基因,构建HPV6b L1-TpN15嵌合基因及其原核表达系统.方法 采用PCR分别从CA组织及Tp临床菌株中扩增HPV6b L1和TpN15基因片段,构建HPV6b L1-TpN15嵌合基因,将其克隆入原核表达载体pET32a(+)构建重组质粒pET32a(+)/HPV6b L1-TpN15,经测序鉴定后转化大肠杆菌BL21 (DE3),经异丙基硫代-β-D-半乳糖苷(IPTG)诱导后表达的融合蛋白用十二烷基磺酸钠(SDS)-聚丙烯酰胺凝胶电泳(PAGE)、蛋白质印迹法分析鉴定.结果 HPV6b L1-TpN15融合蛋白在原核表达系统中得到了较高表达.结论 原核表达的HPV6bL1-TpN15融合蛋白具较强的抗原性.     

荡石片检测方法的研究

建立荡石片质量控制方法。采用专属性强的TLC法对方中小蓟、牛膝、甘草进行定性鉴别。HPLC法测定方中石韦与小蓟的共有成分绿原酸的含量,线性范围0.0936~0.936μg,平均回收率为99.0%(n=9),RSD为1.04%。该方法简便准确,重复性好,可作为荡石片的质量控制方法。     

枸橼酸坦度螺酮治疗首发广泛性焦虑疗效观察

目的：观察枸橼酸坦度螺酮治疗广泛性焦虑的疗效和不良反应,为临床治疗广泛性焦虑提供依据。方法92例广泛性焦虑患者按随机数字表法分为对照组和观察组,各46例。观察组采用枸橼酸坦度螺酮治疗,起始剂量15 mg／d,3 d后增加5 mg,至35 mg／d,平均剂量为（31．0±3．4） mg／d。对照组给予奥沙西泮治疗,根据患者睡眠情况,每天服用剂量不超过30 mg,服用2周后,给药剂量逐渐递减至停服。比较两组的临床疗效、汉密尔顿焦虑量表（ HAMA）评分和不良反应。结果治疗2周末两组HAMA评分差异有统计学意义（ t＝2．16,P＜0．05）。观察组总有效率为86．9％,对照组总有效率为82．6％,两组总有效率差异无统计学意义（χ^2＝0．33,P＞0．05）。对照组不良反应发生率为63．0％,观察组不良反应发生率为32．6％,两组不良反应发生率差异有统计学意义（χ^2＝8．58,P＜0．05）。结论枸橼酸坦度螺酮治疗广泛性焦虑的疗效与奥沙西泮相当,不良反应小。     

基体辅助激光解吸质谱法在生物大分子质量研究中的应用

研究了基体辅助激光解析飞行时间质谱法(MALDI-TOF MS)测定蛋白和糖蛋白的实验条件,实测了重组人白细胞介素2、肿瘤坏死因子、粒细胞巨噬细胞集落刺激因子、白细胞干扰素α2b、白细胞干扰素α₁、促红细胞生成素、钙调蛋白及其片段、大鼠脑型一氧化氮合成酶和天然牛精液蛋白提取物的分子量和纯度,鉴定了蛋白质混合物中各单个成分,结果表明MALDI-TOF MS可有效地研究基因工程蛋白质和天然蛋白提取物等生物大分子的质量。     

2012-2017年西充县人民医院药品不良反应报告分析

目的 分析西充县人民医院2012-2017年药品不良反应（ADR）发生的规律和特点,为进一步加强该院ADR监测水平和临床安全用药提供参考。方法 对西充县人民医院2012-2017年ADR报告进行整理汇总,对患者性别组成、年龄分布、给药途径,ADR类型以及药品种类等进行统计分析。结果 2012-2017年ADR报告例数逐年上升,共纳入843例ADR报告进行分析,其中男性占50.42%,女性占49.58%;老年患者ADR发生率占比最高;抗感染药物类、消化系统类药物、心血管系统类药物以及电解质和营养药ADR发生率较高,但抗感染药物ADR发生风险呈现逐年下降的趋势。结论 近6年来西充县人民医院ADR报告质量逐年提升,但仍需持续提高药品管理水平,规范医疗用药的合理性和安全性,减少患者用药的不适感和安全风险,以期促进该院不良反应监测工作上升到一个新台阶。     

金钱白花蛇及其伪品的DNA分子诊断鉴别

为建立金钱白花蛇品种的DNA分子标记鉴定方法,本文通过提取金钱白花蛇及其伪品药材和原动物样品的模板DNA,用通用引物扩增样品的Cyt b基因片断。PCR扩增所得产物纯化后直接测序,所得序列经对位排列和比较金钱白花蛇及其伪品的DNA序列,发现Cyt b基因片段的种间差异显著大于种内个体间变异,因此该基因片段是蛇类药材鉴定中一个很好的分子标记。基于所得DNA序列数据,设计了一对高度特异性的鉴别引物用于金钱白花蛇的PCR鉴定。用该对引物对金钱白花蛇进行PCR鉴定。在60℃－65℃的复性温度条件下,样品的误检和漏检率为0,能100％地正确区分出正品与伪品药材,此外该方法还能检测出混合粉末中是否含有正品金钱白花蛇成分。研究结果表明用本鉴定引物对金钱白花蛇的PCR鉴定方法简便、有效,实用性强,该方法还有可能成为中成药复方组分鉴别的一种新手段。