雷公藤药材存贮期间成分变化的研究

目的研究雷公藤药材中活性成分之一雷公藤甲素的稳定性。方法以甲醇-水为流动相,采用HPLC梯度洗脱法,测定了雷公藤药材的根、枝、叶中雷公藤甲素在不同存贮期的含量。结果雷公藤甲素在雷公藤药材中的含量随着存贮时间的增长而下降。结论雷公藤甲素在雷公藤药材中有不稳定现象存在。      

HPLC法测定人血浆中比阿培南的浓度及其药动学研究

目的：建立人血浆中比阿培南的高效液相色谱检测方法。方法：色谱柱为Agilent ZORBAX Bonus-RP（4.6 mm×250 mm,5μm）;流动相为甲醇和0.03%醋酸水溶液,采用梯度洗脱法;流速为1.00 ml/min;检测波长为300 nm,血浆样品处理选用5-羟基吲哚乙酸为内标,采用硫酸锌沉淀蛋白。结果：比阿培南在0.2～50.0μg/ml范围内线性良好,HPLC测定定量下限为0.2μg/ml,比阿培南和内标在血浆的保留时间分别为3.9 min和9.7 min,出峰迅速。比阿培南浓度分别为0.5、5.0和40.0μg/ml,血浆样本回收率分别为101.8%、100.8%、100.4%;精密度试验日内和日间RSD均小于15%,稳定性试验结果表明血浆样品在样品处理过程中较稳定（RSD〈15%）。结论：本方法灵敏度高,操作简便,快速,重复性好,适用于比阿培南血浆浓度的测定。     

高效液相色谱法测定万古霉素注射液中的含量

目的:探讨高效液相色谱法测定万古霉素注射液中的万古霉素含量。方法:应用高效液相色谱法同时测定3份万古霉素注射液中的样品中万古霉素的含量,并分析比较了测定条件。结果:万古霉素在214nm处有最大吸收,最佳色谱条件为:色谱柱:硅胶ALOTMCl8色谱柱;流动相:A相为15mmol/L乙酸铵;B相为乙腈;流速为1.0ml/min;梯度洗脱;柱温:30℃,进样量:20μl。结论:高效液相色谱法测定万古霉素注射液中的万古霉素,操作简便迅速,精密度和准确度均较理想,稳定性强,回收含量高,可为测定中万古霉素注射液中万古霉素物质提供方法依据。     

HPLC梯度洗脱法同时测定参杞酒中的党参炔苷、东莨菪苷、东莨菪亭、槲皮素、山柰酚和异鼠李素

目的：建立HPLC梯度洗脱法同时测定参杞酒中的党参炔苷、东莨菪苷、东莨菪亭、槲皮素、山柰酚和异鼠李素。方法采用Shiseido C18（4.6 mm×250 mm,5μm）色谱柱;流动相A：乙腈,流动相B：0.5％醋酸水溶液,进行梯度洗脱;进样量为20μl;流速：1.0 ml/min;柱温：30℃;检测波长分别为269 nm（党参炔苷）、346 nm（东莨菪苷和东莨菪亭）和360 nm（槲皮素、山柰酚和异鼠李素）。结果党参炔苷、东莨菪苷、东莨菪素、槲皮素、山柰酚和异鼠李素分别在4.59～91.80（r=0.9999）、2.62～52.40（r=0.9996）、1.95～39.00（r=0.9998）、3.34～66.80（r=0.9995）、2.30～46.00（r=0.9991）、2.86～57.20μg/ml（r=0.9999）范围内与峰面积呈良好的线性关系,平均加样回收率分别为98.27％、97.62％、99.17％、98.50％、97.35％和98.86％,RSD（n=9）分别为1.33％、1.48%、0.99％、1.37%、1.35％、1.70%。结论本文建立的HPLC梯度洗脱法同时测定参杞酒中的上述6种组分,方法操作简便,准确,重现性好,可作为参杞酒全面可靠的质量控制方法。     

梯度洗脱联合波长切换HPLC法同时测定豨莶风湿丸中的豨莶苷、奇壬醇、豨莶精醇、防己诺林碱和粉防己碱

目的 建立梯度洗脱联合波长切换HPLC法同时测定稀莶风湿丸中稀莶苷、奇壬醇、稀莶精醇、防己诺林碱和粉防己碱.方法 采用Kromasil C18色谱柱(4.6 mm× 250 mm,5μm),以流动相A:乙腈-甲醇(2∶1)、流动相B:0.05％冰醋酸溶液进行梯度洗脱;流速为1.0 mL/min;样量为20 μL;豨莶苷、奇壬醇和稀莶精醇检测波长为215 nm,防己诺林碱和粉防己碱检测波长为280 nm.结果 豨莶苷、奇壬醇、稀莶精醇、防己诺林碱和粉防己碱在给定浓度范围内的线性范围分别为6.45～129.00 μg/mL(r=0.999 5)、5.61～112.20 μg/mL(r=-0.999 9)、4.25～85.00 μg/mL(r=0.999 3)、9.19～183.80 μg/mL(r=0.999 8)和11.05～221.00 μg/mL(r=0.999 7),线性关系良好;平均加样回收率和相对标准偏差(RSD)值分别为98.73％(1.43％)、97.63％(1.28％)、99.44％(1.29％)、98.33％(1.38％)、97.36％ (1.37％).结论 建立的梯度洗脱联合波长切换HPLC法能同时测定豨莶风湿丸中稀莶苷、奇壬醇、稀莶精醇、防己诺林碱和粉防己碱含量,方法简便、准确、重现性好,为稀莶风湿丸质量控制提供了可靠方法.     

抗C+CE复合抗原抗体鉴定的实验研究

目的 探讨区分Rh系统单一抗体和复合抗原抗体的抗体鉴定试验方法.方法 盐水介质和Liss-Coombs卡做抗体筛选和鉴定,采用37℃热吸收、氯仿放散法确认抗体的特异性,并依据抗体的特异性采用Liss-Coombs卡交叉配血.结果 患者Rh血型为ccDEe,其血浆抗体鉴定为抗C+Rh系统其他抗体,用两组细胞CCDee、ccDEE分别做吸收和放散试验,证实抗体特异性为抗C+抗-CE(Rh22),选择献血者Rh血型为ccDEe的红细胞成分交叉配血相合.结论 采用吸收放散试验可以区分Rh系统单一和复合抗原抗体,依据抗体的特异性选择合适的红细胞成分交叉配血更加快捷和安全.     

Rare case of Auto immune haemolytic anaemia in an infant with auto “f & kidd antibodies”

Background"f" antigen is a compound antigen in Rh blood group system. Anti f has haemolytic potential as described in literature. Its occurrence in an infant as autoantibody with another blood group system ie Jka is very rare.Case reportWe report a case of 10-month-old infant diagnosed with AIHA with autoantibodies directed towards "f" and Jka antigen. Antibody identification was done and antigen negative blood units were crossmatched & transfused with demonstrable haemoglobin rise and subsequent decrease in DAT grading.ResultAuto anti f + Jka was identified in a 10 months old infant. Autoantibodies were identified by identification 3 & 11 cell panel and select cell panel. Results were later confirmed by allogenic adsorption & elution. Patient was transfused antigen negative blood unit which lead to haemoglobin rise & gradual decrease in direct coombs test gradingConclusionTo our knowledge, this is the first case report of auto anti f + Jka having haemolytic potential in an infant which shows the importance of extensive immmunohaematology workup in providing compatible blood unit in patients with autoantibody.     

Simultaneous isolation of cytoplasmic endoribonuclease and exoribonuclease of Trypanosoma brucei

An endoribonuclease and an exoribonuclease have been isolated simultaneously from the cytoplasm of Trypanosoma brucei by hydroxyapatite column chromatography. The endoribonuclease produced oligonucleotides from poly(adenylic acid) with 5'-phosphate and 3'-OH termini. The exoribonuclease produced only ribonucleoside 5'-phosphates from poly(adenylic acid). The relative rates of degradation of synthetic homopolynucleotides by the endoribonuclease under standard conditions were in the order poly(adenylic acid) greater than poly(uridylic acid) poly(cytidylic acid); for the exoribonuclease the order was poly(adenylic acid) poly(uridylic acid) greater than poly(cytidylic acid). Natural transfer and ribosomal RNAs were also degraded by both enzymes, while DNA was resistant to them. The optimal pH of activity for each enzyme was 7.5-8.0. Both ribonucleases require Ca2+ for maximum enzymatic activity.     

高效液相色谱法测定复方芩兰口服液中绿原酸和黄芩苷的含量

目的 建立高效液相色谱法同时测定复方芩兰口服液中绿原酸和黄芩苷含量的分析方法.方法 用自制C8-C13混合型烷基键合硅胶柱(150 mm×4.6 mm,5μm)为固定相,甲醇-0.4%的磷酸水溶液为流动相,在C8-C13柱上梯度洗脱,流速为1 mL/min,紫外检测波长为323 nm.结果 绿原酸和黄芩苷的线性范围分别...