装潢居室空气中挥发性化学物的遗传毒性研究

目的探讨装潢居室空气中挥发性化合物的遗传毒性.方法采用小鼠骨髓嗜多染性红细胞微核试验和小鼠精子畸形试验检测居室装潢后空气中挥发性化合物的遗传毒性.结果该化合物对小鼠呼吸系统有明显的刺激作用,与阴性对照组比较,高、中、低剂量组的微核率、精子畸形率均有显著差异性.结论居室装潢后室内空气中挥发性化合物具有遗传毒性作用.     

感测疼痛的机制

据美国BIOCOMPARE科技新闻网（2007／1／25）报道，Scfipps研究院的研究人员发现名为TRPA1的蛋白质能传送痛觉讯号，也就是说它是许多毒性或刺激性化合物的感应器。科学家Ardem Patapoutian表示：这些毒性化合物能直接或间接的与TRPA1蛋白的cysteine氨基酸结合，TRPA1的活化作用与化合物的入侵有直接的关系。     

血液灌流对硫线磷和硫酸阿托品的吸附作用

Objective To study on adsorption effect of cadusafos and atropine sulfate by hemoperfusion.Method Hemoperfusions were performed for sheep blood samples with cadusafos and atropineby through imitated extracorporeal closed circulating perfusion apparatus.Residual cadusafos was determined by gas chromatography and residual atropine was determined by high performance liquid chromatography.Result Dose of adsorption agent was 0.5,1.0 and 1.5 g,respectively.Two hours after hemoperfusion with membrane coated activated charcoal,clearance rate of cadusafos in 3 groups all exceeded 90%.and clearance rate of atropine sulfate was 61.9%,84.9%,88.9%,respectively.One and a half hours after hemoperfusion with HA230 absorption resin,clearance rate of eadusafos in 3 groups all exceeded 90%,and clearance rate of atropine sulfate was 88.0%,97.2%,98.4%,respectively.Three hours after hemoperfusion with membrane coated activated charcoal,The concentration ratio of cadusafos and atropine sulfate in blood promoted to 10.1 times,and the ratio was 6.7 times after hemoperfusion with HA230 absorption resin.Conclusion It suggested that cadusafos were mostly removed from blood after 1.5～2.0hours hemoperfusion with membrane activated charcoal or HA230 absorption resin.The concentration ratio of cadusafos and atropine sulfate in blood will increased after hemoperfusion.     

血液灌流对硫线磷和硫酸阿托品的吸附作用

目的 定量研究血液灌流对有机磷农药硫线磷和其解毒药阿托品的吸附作用.方法 模拟临床血液灌流装置,对含硫线磷和硫酸阿托品的血样进行灌流吸附,分别用毛细管气相色谱法和高效液相色谱法测定硫线磷和硫酸阿托品的残留量.结果 吸附剂用量为0.5、1.0和1.5 g,包膜活性炭在灌流2.0 h后硫线磷的清除率均能达到90%以上,硫酸阿托品的清除率依次为61.9%、84.9%和88.9%;HA230树脂在灌流1.5 h后硫线磷清除率都达到90%以上,硫酸阿托品的清除率也依次高达88.0%、97.2%和98.4%;包膜活性炭灌流3.0h后,硫酸阿托品与硫线磷的比值最高为灌流前的10.1倍,而HA230树脂灌流后,此比值最高为灌流前的6.7倍.结论 包膜活性炭和HA230吸附树脂血液灌流1.5～2.0 h均能清除血中大部分硫线磷,而且均能增加血中硫酸阿托品和硫线磷浓度的比值.     

血液灌流对硫线磷和硫酸阿托品的吸附作用

Objective To study on adsorption effect of cadusafos and atropine sulfate by hemoperfusion.Method Hemoperfusions were performed for sheep blood samples with cadusafos and atropineby through imitated extracorporeal closed circulating perfusion apparatus.Residual cadusafos was determined by gas chromatography and residual atropine was determined by high performance liquid chromatography.Result Dose of adsorption agent was 0.5,1.0 and 1.5 g,respectively.Two hours after hemoperfusion with membrane coated activated charcoal,clearance rate of cadusafos in 3 groups all exceeded 90%.and clearance rate of atropine sulfate was 61.9%,84.9%,88.9%,respectively.One and a half hours after hemoperfusion with HA230 absorption resin,clearance rate of eadusafos in 3 groups all exceeded 90%,and clearance rate of atropine sulfate was 88.0%,97.2%,98.4%,respectively.Three hours after hemoperfusion with membrane coated activated charcoal,The concentration ratio of cadusafos and atropine sulfate in blood promoted to 10.1 times,and the ratio was 6.7 times after hemoperfusion with HA230 absorption resin.Conclusion It suggested that cadusafos were mostly removed from blood after 1.5～2.0hours hemoperfusion with membrane activated charcoal or HA230 absorption resin.The concentration ratio of cadusafos and atropine sulfate in blood will increased after hemoperfusion.     

痛泻要方水煎液化学成分的UPLC-LTQ-Orbitrap-MS分析

目的：采用超高效液相色谱-线性离子阱-静电场轨道阱高分辨质谱法(UPLC-LTQ-Orbitrap-MS)快速鉴定痛泻要方水煎液中的化学成分。方法：色谱条件为ACQUITY UPLC BEH C₁₈色谱柱(2.1 mm×100 mm,1.7μm),流动相0.1%甲酸水溶液(A)-乙腈(B)梯度洗脱(0～4 min,5%～15%B;4～10 min,15%～25%B;10～15 min,25%～60%B;15～20 min,60%～90%B;20～25 min,90%～100%B;25～27 min,100%B;27～30 min,100%～5%B;30～32 min,5%B),流速0.3 m L·min^-1,进样量3μL,柱温35℃。质谱条件为电喷雾离子源(ESI),扫描范围m/z 100～1 250,正、负离子模式下分别采集MS、MS/MS数据。结合对照品、数据库和文献信息,运用Trace Finder 4.1和Xcalibur 2.1软件对痛泻要方水煎液进行化学成分鉴定。结果：在正、负离子模式下,从痛泻要方水煎液中共鉴定出90个化合物,主...     

经典名方达原饮化学成分的UPLC-Q-Exactive Orbitrap MS快速表征

目的：基于超高效液相色谱-四极杆/静电场轨道阱质谱法(UPLC-Q-Exactive Orbitrap MS)对达原饮的化学成分进行定性分析。方法：采用Thermo Acclaim^TMRSLC 120 C₁₈色谱柱(2.1 mm×100 mm,2.2μm),流动相选择乙腈(A)-0.1%甲酸水溶液(B)梯度洗脱(0～7.5 min,10%～19%A;7.5～12 min,19%～22.5%A;12～23 min,22.5%～27%A;23～27 min,27%～56%A;27～35 min,56%～84%A;35～36 min,84%～90%A),流速0.3 mL·min^-1,柱温30℃,加热电喷雾离子源(HESI),正、负离子模式下采集数据,检测范围m/z 80～1 200。结合对照品保留时间、碎片离子、Pub Chem等数据库及相关文献信息,运用Xcalibur 3.0完成对达原饮中化学成分的定性鉴别。结果：从达原饮中共表征出161个化学成分,包括生物碱类14个、黄酮类60个、萜类16个、皂苷类26个、苯丙素类18个...     

微波消解-石墨炉原子吸收法测定工作场所空气中铅及其化合物含量

铅是一种具有全身神经毒性的重金属,铅及其化合物在工业和生活中被广泛应用[1],可通过空气进入人体造成难以恢复的损害,不同程度影响人体神经系统、造血系统、消化系统及肾脏.GBZ/T300.15-2017规定了工作场所空气中铅及其化合物测定采用酸消解-火焰原子吸收光谱法和溶剂洗脱-双硫腙分光光度法,四乙基铅的溶剂解吸-墨炉原子吸收光谱法[2].四乙基铅常温下极易挥发[3],空气中的蒸气态四乙基铅用活性炭采集,酸解吸后,用石墨炉原子吸收分光光度计在283.3 nm波长下测定吸光度,进行定量[2]5-7.本文报道的采用微孔滤膜采集空气中气溶胶态铅及其化合物(包括铅尘和铅烟等),微波消解,石墨炉原子吸收光谱法对工作场所空气中铅及其化合物进行测定,具有简便、灵敏、准确等优点.     

半枝莲中生物活性物质的提取及部分理化性质研究

半枝莲中生物活性物质主要为黄酮类化合物,本文利用正交实验对提取工艺的条件进行了研究,确定的最适工艺条件为：提取温度50℃、提取时间1h。通过对半枝莲提取物理化性黄酮苷质的鉴定,初步确定提取物中含黄酮类化合物,主要为黄酮苷类。     

两种国产皮下埋植剂避孕5年临床观察

为观察国产硅胶棒Ⅰ型与Ⅱ型皮下埋植剂避孕效果,自1994年1月至12月,我站施行皮下埋植剂避孕100例,其中Ⅰ型50例,Ⅱ型50例,各占50％,随访至1999年12月,随访98例,随访率为98％,现将两种避孕剂使用效果报道如下。