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1.
高效毛细管电泳法测定桑叶中芦丁含量   总被引:1,自引:0,他引:1  
目的:探讨高效毛细管电泳法(HPCE)在测定桑叶中芦丁含量的作用。方法:选择新疆不同采集期桑叶。HPCE条件:熔融石英毛细管50cm×50μm,uncoated;硼砂和磷酸二氢钠缓冲溶液20mmol/L,其中含15%甲醇溶液,pH8.5;分离电压20kV(+)-(-);电泳时间12min;电泳温度25℃;压力进样0.5psi×10s;柱上检测UV254nm(二极管阵列检测器)。结果:样品可在10min内出峰,测得蒜氨酸浓度在O~80μg/ml范围内与峰面积的线性关系良好(r=0.9945),平均回收率为98.9%,批内RSD为3.9%。结论:高效毛细管电泳法准确、简单、快捷、重现性好。  相似文献   

2.
目的:测定阿莫西林口服混悬剂中阿莫西林的含量。方法:高效毛细管电泳法。毛细管60cm×75μm,运行缓冲液30 mmol/L硼砂(pH 9.2),高压进样5 s,分离电压12 kV,温度为25℃,检测波长254 nm,阿魏酸为内标。结果:阿莫西林在6~30 μg/mL质量浓度范围内线性关系良好(r=0.9996),平均回收率99.10%(n=5,RSD=1.89%)。结论:本法简单、快捷、灵敏。  相似文献   

3.
目的:建立测定大鼠血浆多索茶碱血药浓度的高效毛细管电泳法.方法:样品用体积分数30%三氯醋酸沉淀蛋白,电解缓冲液为25 mmol/L磷酸盐缓冲液-50 mmol/L SDS(体积比为20:80,pH=7.0),分离通道为50cm×50 μm未涂层毛细管,紫外检测波长为273 nm,分离电压12 kV,采用峰面积内标法定量.结果:采用本法时,多索茶碱血浆浓度在2.5~80.0 mg/L范围内线性关系良好,标准曲线回归方程为y=-8.40×10-3 0.13X(r=0.998 1,P<0.05),方法回收率在允许范围内,日内和日间变异分别小于3.4%和7.5%.结论:本法稳定可靠、操作简单、分析速度快、分离效果好.  相似文献   

4.
考察不同实验条件下更昔洛韦的毛细管电泳行为。用25 mmol/L硼酸--0.25 mmol/L Tris溶液(pH 7.12)为缓冲液.恒压20 kV分离,测定注射用更昔洛韦的含量。更昔洛韦在25~300μg/mL浓度范围内呈良好线性(r=0.9993)。回收率为96.5%.RSD为1.49%。本法简便、准确,能有效地控制该制剂的质量。  相似文献   

5.
建立了高效液相色谱法并测定10名男性健康志愿者血浆中的头孢克罗浓度。结果表明:该方法简便、快速、精密度高、灵敏度好,血浆平均回收率为(102.18±4.01)%,平均日间及日内差均<6%,最低检测限为0.05μg/ml。数据经3P87程序处理,血药浓度-时间曲线符合-室模型,其药动学参数为Ka=2.76h-1,Ke=1.22h-1,T1/2=0.66h,Tmax=0.52h及Cmax=14.63μg/ml。  相似文献   

6.
尿中多胺的毛细管电泳激光诱导荧光测定法   总被引:1,自引:0,他引:1  
目的:建立高效毛细管区带电泳(CZE)激光诱导荧光(LIF)测定人尿中多胺(POL)的新方法。方法:样品用5mmoL/L的HClO4分离蛋白,样品中多胺与异硫氰酸荧光素(FITC)完成衍生反应后,用四甲基乙二胺(TEMED)作内标,在15mmol/L的硼酸盐缓冲液(pH8.5)中,运用毛细管区带电泳进行色谱分离,以激光诱导荧光测定法测定多胺。结果:多胺测定在10-200μg/L范围内具有良好的线性关系(r=0.996),最低检测限为16μg/L,日内变异系数(CV)3.51%-4.61%,日间变异系数(CV)3.74%-4.83%,方法平均回收率为96.00%-99.33%.结论:本方法简便、快速、定量可靠,可用于临床实验室测定人尿中多胺水平。  相似文献   

7.
选择毛细管区带电泳分离模式,以麻黄素为内标建立了适合莨菪类生物碱阿托品、东莨菪碱、山莨菪碱、樟柳碱化化分离与颠茄酊剂及片剂定量分析的高效毛细管电泳方法。电泳分离条件:毛细管40c×50μm,运行缓冲液(pH8.0)50mmol/L磷酸盐溶液-四氢呋喃(9:1),电迁移进样5kV×5s,运行电压11kV(+)→(-),柱上检测UV200um,0.02AUFS,毛细管柱温24℃。本法简便、快速、重现性好,可用于含莨菪类生物碱中药制剂的质量控制。  相似文献   

8.
国产毛细管电泳仪检测血清肌酐   总被引:3,自引:0,他引:3  
目的:用国产毛细管电泳仪建立毛细管电泳测定血清肌酐的方法。方法:采用毛细管胶束电动色谱法,用国产TH-2000毛细管电泳仪进行血清肌酐的测定。电泳缓冲液为硼酸盐缓冲液(20mmol/L,pH9.0),含120mmol/L十二烷基磺酸钠(SDS)。紫外检测波长235nm。结果:肌酐在25.0~1600μmol/L,范围内有良好的线性,最小检出限为12.3μmol/L(信噪比=3);本法CV批内、CV日内均小于5%;低、中、高浓度的回收率分别为96.0%、99.4%、96.5%;与全自动生化分析仪(碱性苦味酸法)测定结果对比,相关系数r=0.9977,回归方程y=0.971X-16.48;尿素、尿酸、咖啡因、维生素C、血红蛋白、胆红素、脂血等对本方法无干扰。结论:该法简单,分离效果好,上样量少,成本低,分析速度快,可应用于临床样品检测。  相似文献   

9.
高效毛细管电泳法测定注射用维库溴铵的含量   总被引:1,自引:0,他引:1       下载免费PDF全文
本文考察了不同实验条件下维库溴铵的毛细管电泳行为。用50mmol/L硼砂溶液(pH9.2)为缓冲液,以盐酸伪麻黄碱为内标于205nm波长处测定注射用维库溴铵的含量,在0.5~3mg/ml浓度范围内呈良好线性,回收率为99.10%,RSD为1.5%(n=5)。  相似文献   

10.
四倍体板蓝根中五种有机酸成分的毛细管电泳分离分析   总被引:16,自引:0,他引:16  
选择毛细管区带电泳分离模式 ,以肉桂酸为内标建立了适合板蓝根药材中抗内毒素活性成分五种有机酸优化分离与定量分析的毛细管电泳方法。电泳分离条件 :毛细管 4 0 cm× 50 μm,运行缓冲液 p H9.5磷酸二氢钠 -硼砂 ( 50 mmol/L∶ 1 2 .5mmol/L,内含 1 6mmol/Lβ-CD) ,压力进样 2 0 psi× s,操作电压 1 8k V ( )→( -) ,柱上在线检测 UV2 0 0 nm,毛细管柱温 2 5℃  相似文献   

11.
FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…  相似文献   

12.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

13.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

14.
Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P< 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P< 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.  相似文献   

15.
Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.  相似文献   

16.
In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.  相似文献   

17.
Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.  相似文献   

18.
目的:评价使用安心颗粒对急诊经皮冠状动脉介入术(PPCI)术后生活质量的影响.方法:将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组(术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次)和对照组(仅接受基础药物治疗).所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表(MIDAS)、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果:入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异(P>0.05);出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低(P<0.05);组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低(P<0.05).两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血(P>0.05).两组发生轻度血小板减少症的患者数比较无差异(P>0.05).结论:PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.  相似文献   

19.
20.
目的 探讨猪肺磷脂注射液联合经鼻持续气道正压通气(NCPAP)对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性(CK-MB)的影响.方法 选取呼吸衰竭早产儿80例,分为观察组和对照组各40例.对照组采用NCPAP给氧治疗,观察组给予NCPAP给氧联合猪肺磷脂气管内给药.观察两组患儿治疗前及治疗12h、24 h后PaO2、PaCO2、血氧饱和度(SaO2)、pH的变化情况,检测治疗前及治疗5d后血清CK-MB水平;评估两组患儿的临床治疗效果.结果 两组患儿PaO2、PaCO2、SaO2、pH比较,差异均有统计学意义(P<0.05),其中观察组治疗后的PaO2、SaO2、pH均高于对照组,PaCO2则低于对照组.两组的PaO2、SaO2、pH均随观察时间延长而升高(P<0.05),PaCO2均随观察时间的延长而降低(P<0.05).观察组治疗有效率为87.5%,显著高于对照组的70.0% (P <0.05).治疗5d后两组患儿血清CK-MB水平均较前降低(P<0.05),且观察组明显低于对照组(P<0.05).结论 猪肺磷脂注射液气管内给药联合NCPAP可以显著降低呼吸衰竭早产儿CK-MB的含量,提高治疗有效率,起到很好的呼吸循环支持作用.  相似文献   

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