高效液相色谱法测定盐酸噻氯匹定胶囊的含量

目的建立盐酸噻氯匹定胶囊的高效液相色谱 (HPLC)含量测定方法。方法盐酸噻氯匹定胶囊的HPLC含量测定色谱条件 :ODS柱 ,流动相 :0 .1%三乙胺溶液 (用磷酸调pH 2 .5 ) 甲醇 (6 0∶4 0 ) ,检测波长 :2 33nm ,流速 :1.0ml/min。结果盐酸噻氯匹定胶囊HPLC含量测定方法的线性范围为 10ng～ 10 μg ,日内RSD为0 .5 0 % ,日间RSD为 0 .4 6 %。结论此方法简便 ,准确可靠 ,耐用性好     

盐酸马尼地平的合成

以哌嗪为起始原料,经环氧乙烷加成、二苯甲基溴缩合、用双乙烯酮乙酰化得乙酰乙酸2-(4-二苯甲基-1-哌嗪基)乙酯,最后与间硝基苯甲醛和β-氨基巴豆酸甲酯环合制得盐酸马尼地平,总收率28.9%.     

顶空气相色谱法测定盐酸依匹斯汀中溶剂残留

建立顶空气相色谱法分析盐酸依匹斯汀中溶剂残留.采用DB-1大口径毛细管柱,以正丙醇为内标进行定量.甲醇、乙醚、三氯甲烷、四氢呋喃的线性范围分别为7.9 ～ 317.0μg·ml-1 (r=0.9996),0.7～35.5μg·ml-1(r=0.9998),1.5～73.5μg·ml-1 (r=0.9992),0.9～44.4μg·ml-1(r=0.9994),回收率分别为101.64%,97.18%,99.32%,101.12%,RSD分别为1.97%,1.10%,2.40%,0.84%.本方法简单、准确、灵敏度高、重现性好.     

复方盐酸二甲双胍片在人体内药物动力学和生物等效性研究

目的 建立人血浆中盐酸二甲双胍的反相离子对高效液相色谱和格列本脲的液相色谱-质谱测定方法,研究复方盐酸二甲双胍片(盐酸二甲双胍250mg/格列本脲1.25mg×2片)相对于联合使用的盐酸二甲双胍片(500mg)和格列本脲片(2.5mg)在男性健康志愿者体内的药物动力学行为,评价其生物利用度和生物等效性。方法 采用双交叉随机实验设计:20名受试者交叉口服复方盐酸二甲双胍片2片或口服盐酸二甲双胍片与格列本脲片各1片,服药后于0.5、1.0、1.5、2.0、2.5、3.0、3.5、4.0、5.0、6.0、8.0、12、24、36h分别取血,分离血浆,分别依法测定盐酸二甲双胍和格列本脲的血药浓度。结果 测得口服复方盐酸二甲双胍片或联合使用盐酸二甲双胍片与格列本脲片后,盐酸二甲双胍的达峰时间分别为(2.0±0.7)h和(2.1±0.9)h,峰浓度分别为(1402.4±349.2)μg·L^-1和(1329.7±315.4)μg·L^-1,消除半衰期分别为(3.84±0.61)h和(4.26±0.96)h,AUC_0-24分别为(7292.7±1967.5)μg·L^-1和(7416.2±1843.9)μg·h·L^-1；格列本脲的达峰时间分别为(3.1±0.9)h 和(3.0±0.8)h，峰浓度(71.7±22.7)μg·L^-1和(70.3±20.7)μg·L^-1,消除半衰期分别为(5.05±2.01)h 和(4.78±1.64)h，AUC_0-24分别为(367.6±168.7)μg·L^-1和(352.6±144.7)μg·h·L^-1；以联合服用等剂量的盐酸二甲双胍片与格列本脲片为参比，以AUC_0-24计算得复方盐酸二甲双胍片之盐酸二甲双胍和格列本脲的相对生物利用度，分别为101.1%±28.5%和123.7%±82.9%。结论 建立的分析方法准确灵敏，测得数据可靠。统计学分析表明复方盐酸二甲双胍片与联合使用盐酸二甲双胍片和格列本脲片显生物等效。     

反向高效液相色谱法测定盐酸伊托必利颗粒血药浓度及其人体药动学和生物等效性分析

目的:测定人血浆中盐酸伊托必利颗粒的血药浓度并对其在健康人体内的药代动力学及生物等效性进行分析.方法:采用反相高效液相色谱法(RP-HPLC)测定20名男性健康志愿者单剂量口服100mg盐酸伊托必利颗粒剂(受试药)和盐酸伊托必利片(参比药)后,血浆中伊托必利浓度变化情况,用3P97程序进行药代动力学分析.结果:测得受试药和参比药Cmax分别为594.8±152.3和628.6±261.4μg·L-1,Tmax分别为0.766±0.213和0.900±0.392 h,T1/2ke分别为3.21±0.86和3.49±0.77 h,AUC0-15分别为2266.0±1340.9和2339.4 ±1831.7μg·L-1·h-1,AUC0-∞分别为2472.1±1800.3和2496.9±1952.3μg·L-1·h-1.结论:盐酸伊托必利颗粒的相对生物利用度为106.9%±27.3%:选择Cmax、AUC0-15和AUC0-∞进行三因素方差分析与双单侧t检验,结果表明受试药与参比药具有生物等效性.     

盐酸左氧氟沙星凝胶的制备与质量控制

OBJECTIVETo prepare levofloxacin hydrochloride gel.METHODCarbopol-940 was used as the gel stroma to prepare the gel of levofloxacin hydrochloride.assesy using UV method to analysis the content,and research stability of the preparation.RESULTSthe average     

RP-HPLC法测定盐酸尼非卡兰粉针的含量

目的 建立反相高效色谱法测定盐酸尼非卡兰粉针的含量.方法 采用Hypersil ODS柱(4.6mm×250mm,5μm),检测波长269nm.流动相为甲醇-0.02mol·L-1醋酸铵(60∶40);流速:1.0mL·min-1.结果 盐酸尼非卡兰在9.35～95.7μg.mL-1浓度范围内线性关系良好(r=0.99998).平均回收率为101.29%,RSD=0.28%.结论 本法快速,简便,准确,重复性好.     

高效液相色谱法测定盐酸美利曲辛的含量

目的 采用高效液相色谱法测定盐酸美利曲辛的含量.方法 采用VP-ODS C18色谱柱,流动相为乙腈-甲醇-水(20∶20∶60),检测波长为254nm.结果 在建立的色谱条件下,美利曲辛主峰与杂质峰能完全分离,在浓度为55.2～220.8μg·mL-1时,面积与其浓度线性关系良好(r=0.9991);样品的平均回收率为99.86%,RSD=0.13%(n=9);结论 该方法 准确,简便快捷,重复性好.可用于盐酸美利曲辛的含量及有关物质测定.     

A systematic review of the efficacy of donepezil hydrochloride combined with nimodipine on treating vascular dementia

Background:Vascular dementia (VaD) is a comprehensive syndrome related to the damage of cognitive function and various cerebral vascular illnesses. VaD is also generally recognized as the second most common type of dementia after Alzheimer disease, contributing to 30% of the dementia population in Asia and developing countries. The ability of donepezil hydrochloride and nimodipine had been respectively proven in improving cognitive function in vascular dementia. However, whether the combined application of both drugs contribute to better efficacy remains as a research hotspot. Studies had shown definite satisfactory result with such combination, however evidence-based evaluation of the efficacy is still lacking. Therefore, meta-analysis is employed in this study to evaluate the efficacy and safety of using donepezil hydrochloride combined with nimodipine in treating VaD to provide references for clinical treatments. The efficacy of donepezil hydrochloride combined with nimodipine on treating vascular dementia is systematically reviewed to provide evidence-based references for clinical applications.Methods:Both Chinese and English databases were searched from the start till August, 2020 for any RCT regarding the combined use of the 2 drugs in treating vascular dementia. Two investigators would later evaluate and screened out research and data based on an improved Jaded scale. Software Rev Man 5.3.0 was employed to carry out meta-analysis on clinical effificacy, mini-mental state examination (MMSE) ratings, activity of daily living (ADL) ratings, and clinical dementia scale (CDR) ratings.Results:Donepezil hydrochloride combined with nimodipine had demonstrated satisfactory efficacy on the treatment of vascular dementia. Improvements were namely spotted on MMSE scale, ADL scale, and CDR scale, with the utmost efficacy by 12 weeks after intervention.Conclusions:Donepezil hydrochloride combined with nimodipine had good efficacy in the treatment of patients with vascular dementia, mainly in terms of improving the Simple MMSE scores, the ability to use daily living scale (ADL) scores and the CDR, and the best results were obtained after 12 weeks of intervention. Such conclusion should be cautiously evaluated.     

盐酸曲唑酮缓释剂临床应用专家建议

盐酸曲唑酮缓释剂作为一种多受体结合药物,不同剂量可发挥不同的药理作用、改善多种精神障碍。为进一步规范盐酸曲唑酮缓释剂的临床应用,本专家撰写组整合了国内外临床试验、临床实践指南、处方指南及临床用药经验,撰写了此临床应用专家建议。本文提到盐酸曲唑酮缓释剂在临床上适用于抑郁症、各种原因引起的失眠,还应用于广泛性焦虑障碍、性功能障碍、创伤后应激障碍、物质依赖和戒断反应及强迫障碍,并说明了药物用法用量、相互作用,以及特殊人群使用的注意事项,以期为临床医生提供科学、全面的用药指导。