首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 93 毫秒
1.
目的建立桑叶中药材的HPLC指纹图谱分析方法。方法采用HPLC-DAD法对桑叶进行指纹图谱分析,以芦丁为参照物分析了10批不同产地的桑叶样品,采用计算机辅助相似性评价系统进行评价。结果桑叶药材HPLC指纹图谱由13个特征峰构成指纹图谱的特征,10批样品的指纹图谱的相似度均大于0.90,符合指纹图谱研究技术的要求,所建立的指纹图谱具有稳定、重现的特点。结论该方法准确、简单,其色谱指纹图谱可用于桑叶药材的鉴别和质量控制。  相似文献   

2.
目的:建立桑枝药材中黄酮类物质高效液指纹图谱(HPLC-DAD)的分析方法。方法采用 HPLC-DAD 法对桑枝进行指纹图谱分析,以紫云英苷为参照物分析10批不同产地的桑枝样品,采用计算机辅助相似性评价系统进行评价。结果桑枝药材 HPLC 指纹图谱由11个特征峰构成,相似度均>0.90,符合指纹图谱研究技术的要求。结论所建立的指纹图谱结果稳定,重现性好,该方法准确、简单,其指纹图谱可用于桑枝药材的鉴别和质量控制。  相似文献   

3.
目的 优化杭菊高效液相色谱指纹图谱分析方法,建立杭菊黄酮类及酚酸类成分指纹图谱.方法 色谱柱为Kromasil 100-5 C18柱;流动相为乙腈-0.1%(体积分数)H3P04溶液,梯度洗脱;检测波长为350nm;柱温为35℃;流速为1.0mL·min-1.结果 不同来源的14批杭菊样品均标示出21个共有峰,其中有15个黄酮类成分共有峰,6个酚酸类成分共有峰;利用中药色谱指纹图谱相似度评价软件进行相似度评价,14批样品的相似度为0.926 ~0.998,提示杭菊质量较稳定.结论 本方法准确可靠、重复性好,为杭菊质量控制提供了依据.  相似文献   

4.
目的 研究不同品种和产地化橘红药材黄酮类成分的色谱指纹图谱分析方法。方法 应用HPLC法以柚皮苷为参比,以相对保留时间和峰面积百分比为参数,建立10个样品的HPLC指纹图谱。结果 标示出30多个峰,且不同品种化橘红(毛橘红和光橘红)的图谱存在较大的差异。结论 该方法准确、重现性好,适用于化橘红药材的质量控制与鉴定。  相似文献   

5.
目的 采用已建立的乌药HPLC指纹图谱检测方法,对不同产地乌药进行鉴别研究。方法 以Symmetry C18(150 mm×4.6 mm,5 μm)为色谱柱,乙腈-水为流动相进行梯度洗脱,在235 nm波长下以乌药醚内酯为参照物测定了6个不同产地乌药的指纹图谱。按照乌药HPLC指纹图谱共有模式,标定6个共有指纹峰,并对不同产地乌药指纹图谱进行相似度比较。结果 台乌药和其他5个产地乌药的指纹图谱,存在显著的差异。同时也对该指纹图谱检测方法进行了验证。结论 通过HPLC指纹图谱方法,能够明显区别台乌药与其他产区的乌药,该方法可作为台乌药真伪鉴别的有效方法。  相似文献   

6.
春柴胡黄酮成分的指纹图谱研究   总被引:1,自引:0,他引:1  
目的 为了控制春柴胡药材的质量,对不同产地、不同采收期春柴胡药材黄酮类成分的指纹图谱进行了研究.方法 对测定指纹图谱的仪器,流动相、检测波长等条件进行了优选,建立了液相指纹图谱测定条件,并进行了方法 学考察.结果 10批春柴胡指纹图谱与对照指纹图谱计算相似度,其结果 均大于0.90.结论 通过建立10批江苏句容产春柴胡样品的HPLC共有模式,实验结果 客观、准确.为控制该地区春柴胡的质量和建立该品种的质量标准提供了依据.  相似文献   

7.
目的 优化桑叶高效液相色谱指纹图谱分析方法,建立桑叶黄酮类及酚酸类成分的指纹图谱.方法 采用Kromasil 100-5 C18色谱柱;流动相为乙腈-2%(体积分数)乙酸溶液(梯度洗脱);检测波长为350 nm;柱温为30℃;流速为1.0 mL/min.结果 10批桑叶样品均标示出1 1个共有峰,鉴别了4个共有峰,分别为绿原酸、芦丁、异槲皮苷、紫云英苷;利用中药色谱指纹图谱相似度评价软件进行相似度评价,10批样品的相似度为0.967~0.995,提示桑叶的黄酮类及酚酸类成分质量较稳定.结论 本法准确可靠、重复性好,为桑叶质量控制提供了依据.  相似文献   

8.
目的建立河北道地药材热河黄芩的HPLC指纹图谱,并与不同产地黄芩药材指纹特征相比较,为科学评价与有效控制黄芩质量提供新方法。方法采用HPLC法测定了热河黄芩等11个不同产地黄芩样品。色谱条件:C18柱,乙腈-0.25%磷酸-四氢呋喃为流动相进行梯度洗脱,检测波长274nm,体积流量1.0mL/min,柱温30℃。结果建立了HPLC指纹图谱共有模式,并对不同产地药材进行了相似度比较。结论色谱指纹图谱分析法能简便、快速地鉴别和区分不同来源的黄芩药材,为全面控制黄芩药材的质量提供了依据。  相似文献   

9.
目的 建立沙苑子的HPLC指纹图谱,为沙苑子的质量控制及药材鉴别提供依据。方法 采用HPLC法对不同来源沙苑子的主要有效成分黄酮类化合物进行指纹图谱研究。结果 不同来源的沙苑子HPLC指纹图谱十分相似,有25个共有峰。结论 该方法可用于控制沙苑子药材的内在质量。  相似文献   

10.
目的建立胡椒药材的指纹图谱,为胡椒的质量控制提供新方法。方法采用高效液相色谱法,选用YMCC18色谱柱(250mm×4.6mm,5μm),流动相为甲醇-水(65∶35);体积流量为1mL/min;检测波长为245nm。结果建立了胡椒药材的指纹图谱,并检测了不同来源10批胡椒药材HPLC指纹图谱,相似度较高,并且利用"中药色谱指纹图谱相似度评价软件"生成了胡椒药材的对照指纹图谱,共有指纹峰12个,各色谱峰分离良好;对比分析4批市售胡椒粉HPLC指纹图谱与对照图谱的相似度。结论所建立的胡椒药材的指纹图谱有良好的精密度、重现性、稳定性,适于胡椒的质量控制。  相似文献   

11.
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   

12.
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   

13.
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   

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.
Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P<0.01);the MAP decreased(P<0.01)and the HR increased drastically(P<0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.  相似文献   

20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号