RP—HPLC法测定瓜蒌子中3，29-二苯甲酰基栝楼仁三醇含量

目的:建立 RP-HPLC 法测定瓜蒌子中3,29-二苯甲酰基栝楼仁三醇的含量。方法:采用 Polaris C_(18)色谱柱(250mm×4.6mm,5μm);以甲醇-水(93:7)为流动相,流速1.0 mL·min~(-1),紫外检测波长为230nm;柱温25℃;进样量5μL。结果:3,29-二苯甲酰基栝楼仁三醇线性范围为0.0484-2.4200μg(r=0.9999),3个浓度的回收率分别为96.19%,100.7%,100.6%(n=3);RSD 分别为3.3%,0.63%,1.2%。结论:本方法简单、重复性好、专属性强,可为评价不同产地的瓜蒌子药材质量提供科学依据。     

RP-HPLC制备色谱法分离淡豆豉中高纯度异黄酮苷元

淡豆豉经大孔树脂柱色谱初步分离纯化,采用RP-HPLC制备色谱法,乙腈-水-冰醋酸(35∶ 65∶ 1,v/v/v)为流动相,流速3.0 ml/min,检测波长260 nm.结果表明,在30 min内快速分离到大豆素、大豆黄素和染料木素,产物纯度均达到99%以上.     

反相HPLC法测定马钱子中士的宁和马钱子碱的含量

建立反相高效液相色谱法测定马钱子中士的宁和马钱子碱的方法.色谱柱为Diammsil C18柱,以10mmol·L-1庚烷磺酸钠与20mmol·L-1磷酸二氢钾等量混合溶液(用10%磷酸调节pH值为2.8)-乙腈(79∶21)作为流动相,检测波长260nm;马钱子样品采用碱化后以氯仿回流提取.线性范围士的宁为0.4392～2.196μg、马钱子碱为0.3936～1.9680μg,士的宁回收率为100.90%,RSD为2.32%,马钱子碱回收率为102.57%,RSD为2.48%.本方法快速、准确、重现性好,可用于马钱子的质量控制.     

白斑颗粒的薄层色谱鉴别

目的:建立白斑颗粒的质量控制标准.方法:采用薄层色谱法对白斑颗粒中何首乌、丹参、桃仁、赤芍进行定性鉴别.结果:在薄层层析色谱中均能检出何首乌、丹参、桃仁和赤芍.结论:方法简便、专属性强,可用于该制剂的质量控制.     

菟丝子中槲皮素药代动力学研究

目的建立菟丝子中槲皮素的含量测定方法,研究槲皮素体内动力学规律.方法建立快速敏感的高效液相色谱-紫外检测法(HPLC-UV),以卡马西平为内标,以菟丝子灌胃给药后,大鼠含药血清样品经液-液萃取后在C18反相色谱柱上进行分离测定.结果槲皮素血药浓度在0.05～9μg/mL浓度范围内线性关系良好(r=0.9998).方法回收率为86.65～99.07%,提取回收率为79.91～84.56%,最低检测限为0.05μg/mL.结论槲皮素在大鼠体内的动力学过程表现为具吸收的二室开放模型,其中t1/2(Ab)=0.13h,t1/2(α)=0.19h,t1/2(β)=1.22h,tmax=0.333h.实验结果可为菟丝子在临床用药的安全性和有效性提供依据.     

Update on nonoxynol-9 as vaginal spermicide

Nonoxynol-9 (N-9) is a typical surfactant. For more than 30 years that very property of N-9 has been successfully exploited for its spermicidal action. It is available as an over-the-counter, locally acting vaginal spermicide. The suitability of N-9 as a spermicide is elaborated in this article. The reasons why N-9 may fail as a contraceptive are discussed. In spite of many drawbacks, which are mentioned in the article, N-9 is still often resorted to as a locally acting contraceptive. The review ends with suggestions to alter the molecular structure of N-9 and to adjust the dosages.     

淡豆豉的发酵工艺沿革及过程控制概述

通过查阅古籍及现代文献，对淡豆豉的历史演变、古今发酵工艺对比和关键环节控制进行了系统的梳理，分析并总结了淡豆豉的品质影响因素及其控制方法，以期为淡豆豉质量控制研究提供参考依据。经分析后发现，在淡豆豉的发酵过程中，发酵菌种、杂菌、温度和湿度等均为影响其品质的重要因素，“后酵”过程的条件控制更是被历代本草重点关注。此外，古代认可的“香美之豉”是以霉菌为优势菌发酵而成，发酵霉菌的选育和使用应是解决淡豆豉品质问题的要点。因此，基于历代本草所载 “香”和“美”的评价指标深入研究和优化菌种、温度、湿度等工艺条件对提高淡豆豉的品质具有重要意义。     

El entrenamiento en tapiz rodante a domicilio mejora la calidad seminal en adultos con diabetes de tipo 2

ObjectiveThis was the first study conducted to determine the influence of home-based treadmill training on seminal quality in adults with type 2 diabetes.Material and methodsSixty sedentary adults with type 2 diabetes volunteered for the current study. Thirty were randomly allocated to the intervention group and performed a a 14-week, home-based, treadmill training program, 3 sessions per week, consisting of a warm-up (10-15 min), 40 min treadmill exercise at a work intensity of 55-70% of peak heart rate (increasing by 2.5% each two weeks) measured during a maximal treadmill test, and cooling-down (5-10 min). The control group included 30, age and BMI matched adults with type 2 diabetes who did not take part in any training program. Seminal quality analysis included semen volume, sperm concentration, motility and normal morphologic features. Furthermore, total antioxidant status (TAS) as well as glutathione peroxidase (GPX) activity were assessed in seminal plasma. This protocol was approved by an Institutional Ethics Committee.ResultsThe home-based treadmill training significantly increased sperm concentration as well as percentages of total sperm motility and normal spermatozoa. Furthermore, TAS and GPX activity were increased after the completion of the training program. No significant changes in any of the measured variables were found in the control group.ConclusionsHome-based treadmill training improved seminal quality in adults with type 2 diabetes. A secondary finding was that seminal antioxidant defense system was significantly increased after being exercised.     

HPLC法同时测定菟丝子药材中酚酸和黄酮类成分含量

运用HPLC法建立同时测定菟丝子药材中酚酸类成分咖啡酸、对-香豆酸和黄酮类成分金丝桃苷、槲皮素、山奈酚的方法。结果5种成分均达到基线分离，具有良好的线性关系（r≥0.9993），平均加样回收率为96.86%~103.20%。本方法简便、准确，可同时用于菟丝子中两大类成分的含量测定。