HPLC测定复方维A酸脂质体中蒿酮的含量和包封率

目的:建立复方维A酸脂质体中蒿酮的含量和包封率测定的高效液相色谱(High performance liquidchromatography,HPLC)法.方法:色谱柱:迪马KromasilC18柱(250mm×4.6mm,5μm);流动相:乙腈-水(75:25);检测波长:242 nm;柱温:30℃;流速:0.8 m...     

HPLC法测定香苓开胃方中广藿香酮含量

目的:建立香苓开胃方中广藿香酮含量的HPLC测定方法。方法:采用高效液相色谱法(HPLC)测定香苓开胃方水煎剂中广藿香酮的含量,色谱柱Extend-C_(18)(4.6mm×250mm,5μm),流动相为乙腈(A)-0.2%的磷酸水溶液(B),梯度洗脱(0～20min,A 55%～60%),进样量:10μL,流速:1mL·min~(-1)。检测波长为310nm,柱温为30℃。结果:广藿香酮在0.00798～0.66500μg(r=1.0000)范围内线性关系良好;平均回收率(N=6)为108.58%,RSD为3.24%。香苓开胃方中广藿香酮含量范围为0.339～1.408 mg·dose~(-1)。结论:本实验方法简便准确,回收率、重复性均能达到要求,可用于香苓开胃方的质量控制。     

HPLC法测定酒石酸长春瑞滨在细胞内外的含量

目的:建立细胞内外酒石酸长春瑞滨含量浓度的高效液相色谱测定方法.方法:色谱柱,Lichrospher C18(4.6mm × 250mm,5 μm);流动相:磷酸盐缓冲液(0.05 mol/ml的磷酸二氢钾,pH 3.5):乙腈=70:30(v/v);柱温为30℃;检测波长269 nm;流速为1 ml/min;进样体积...     

HPLC-ELSD法测定双氯芬酸钠自乳化缓释片中双氯芬酸钠的含量

目的 建立高效液相色谱-蒸发光散射检测法测定双氯芬酸钠自乳化缓释片中双氯芬酸钠的含量.方法 采用HPLC-ELSD法.色谱柱:Agilent TC-C18(250 mm×4.6 mm,5 μm)柱;流动相:甲醇-0.12％(体积分数)冰醋酸(体积比20∶80);流速:1.0 mL· min-1;漂移管温度:40℃,气体...     

高效液相色谱法测定两面针不同药用部位氯化两面针碱的含量

[目的]比较广东、广西产两面针不同部位中氯化两面针碱的含量差异.[方法]采用体积分数70%甲醇超声提取,高效液相色谱法(HPLC)测定,色谱柱为Hypersil ODS C18(4.6 mm×200 mm,5μm);以乙腈为流动相A,1.22 g/L甲酸-三乙胺(pH4.5)为流动相B,梯度洗脱.[结果]氯化两面针碱的...     

HPLC法测定二仙增精合剂中淫羊藿苷的含量

目的 建立二仙增精合剂中淫羊藿苷的含量测定方法.方法 采用高效液相色谱色谱法,色谱柱:Sinochrom ODS-bp(4.6 mm×250 mm,5μm);流动相:乙腈-水(体积比26∶74);柱温:30℃;检测波长:269nm;流速:0.9 mL·min-1.结果 淫羊藿苷在0.118～1.18 mg·mL-1之间...     

柿蒂药材的高效液相色谱指纹图谱研究

目的 建立柿蒂高效液相色谱指纹图谱的分析方法.方法 采用HPLC法,色谱柱:Agela venusil MPC18(250 mm×4.6 mm,5μm);流动相:甲醇-0.5%(体积分数)醋酸,梯度洗脱;流速:0.8 mL/min;柱温:20℃;进样量:20 μL;检测波长:264 nm.结果 对所采集的10批柿蒂药材...     

高效液相色谱法测定川芎不同炮制品中游离阿魏酸和总阿魏酸的含量

[目的] 测定并比较川芎不同炮制品中游离阿魏酸、总阿魏酸的含量.[方法] 采用超声提取法,以甲醇-甲酸(95:5,V/V)为游离阿魏酸的提取溶剂,以甲醇-20 g/L NaHCO3(95:5,V/V)为总阿魏酸的提取溶剂;采用高效液相色谱(HPLC)法测定,色谱条件为:Diamonsil C18分析柱(250 mm×4.6 mm,5μm);流动相为乙腈-体积分数1%冰醋酸(20:80,V/V);检测波长:320 nm;流速:1.0 mL/min;柱温:室温.[结果] 酒炙川芎的游离阿魏酸和总阿魏酸含量均高于生品及制川芎.川芎生品与不同制品水煎液中阿魏酸含量均高于其游离阿魏酸含量.[结论] 本研究含量测定方法简便、准确,可用于川芎及其炮制品中阿魏酸含量的测定研究;测定川芎中总阿魏酸的含量更能反映川芎的质量.     

强骨口服液澄清工艺的比较研究

1 仪器与试药 仪器:Agilent 1100高效液相色谱议;HP化学工作站;色谱柱:Lichrospher C18 (4.6mm×25cm,5μm);高效冷冻离心机.     

HPLC法测定猪血浆及组织中盐酸克仑特罗的含量

目的 建立猪血浆及组织(肌肉、肝脏、肾脏)中盐酸克仑特罗含量的测定方法.方法 采用高效液相色谱法,色谱柱:ODS C18(150mm×4.6mm×5 μm);流动相:0.01 mol·L-1磷酸二氢钠水溶液-甲醇(体积比65:35);流速:1 mL·min-1;检测波长:243 nm;柱温:25℃,样品提取液为0.5%...     

Value of D-Dimers in patients with acute aortic dissection

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.     

Research of combined liver-kidney transplantation model in rats

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.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

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.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

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.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

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.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.