HPLC法测定鬼针草药材中金丝桃苷的含量

目的建立鬼针草药材中金丝桃苷的含量测定方法。方法采用HPLC法,ODS C18色谱柱(4.6mm×255mm,25μm),流动相为乙腈-3%冰醋酸水溶液(12.5∶87.5),检测波长为363nm,流速为1.0ml/min。结果金丝桃苷在1.773～15.067μg/ml线性关系良好(r=0.9999),平均回收率97.90%,RSD3.15%(n=6),鬼针草药材金丝桃苷的平均含量为0.41mg/g,RSD0.001%(n=3)。结论建立高效液相色谱法测定鬼针草药材中金丝桃苷的含量操作简便,重复性好,可为鬼针草药材质量标准的制定提供分析方法。     

高效液相色谱法测定菟丝子中绿原酸、对-香豆酸和金丝桃苷的含量

[目的]建立同时测定菟丝子中绿原酸、对-香豆素和金丝桃苷的含量的高效液相色谱法,为菟丝子的质量标准建立提供依据。[方法]色谱柱为依利特ODS C18(4.6 mm×250 mm,5μm);流动相为甲醇-0.05%甲酸水溶液,梯度洗脱,流速为1 m L/min,检测波长为360 nm。[结果]在此色谱条件下,3种成分可完全分离。绿原酸、对-香豆素和金丝桃苷的线性分别为2.00~100μg/m L(r=0.999 3),6.25~100μg/m L(r=0.999 1),0.50~50μg/m L(r=0.999 1)。平均回收率分别为100%(RSD=3.2%)、102%(RSD=1.7%)和102%(RSD=3.1%)。[结论]该方法简便可行,重复性好,可用于菟丝子的质量评价。     

高效液相色谱法测定百咳静颗粒(儿童型)中黄芩苷的含量

目的 建立高效液相色谱法测定百咳静颗粒(儿童型)中黄芩苷含量的方法.方法 色谱柱为Gimini ODS(4.6 mm×250 mm,5μm),流动相为乙腈-0.03 mol/L醋酸铵(含0.25%甲酸)(体积比20:80),流速为1.0 ml/min,柱温为40℃,检测波长为316 nm,进样量为20μL.结果 黄芩苷...     

养阴退热颗粒提取物中用高效液相色谱法测芍药苷含量

目的:建立一个采用高效液相色谱法测定养阴退热颗粒提取物中芍药苷含量的方法。方法:Odshypersil色谱柱(4.6 mm×250 mm,5μm),乙腈-0.1%磷酸溶液洗脱,柱温度32℃,流量0.8 m L/min,检测波长230 nm。结果:芍药苷在在5~200μg/m L范围内线性关系良好,平均回收率为99.83%,RSD为0.76%,A类不确定度Ua=0.003417.结论:3批样品的抽检结果显示,该方法准确、方便、重复性好,可用于测定芍药苷在养阴退热颗粒提取物中的含量。     

高效液相色谱法同时测定百华花楸果实中金丝桃苷和芦丁的含量

目的建立同时测定百华花楸果实中金丝桃苷和芦丁含量的高效液相色谱分析方法。方法采用高效液相色谱法,色谱柱为Zorbax SB-C₁₈柱（5μm,4.6 mm×250 mm）,流动相为甲醇∶乙腈∶0.025 mol/L磷酸（10∶20∶70）,流速1.0 m L/min,检测波长363 nm,柱温30℃。结果金丝桃苷和芦丁分别在0.1⁰.8μg和0.16¹.28μg范围内,进样量与色谱峰面积呈良好线性关系,相关系数分别为0.9994和0.9992;平均回收率（n=9）分别为98.58%和98.22%,RSD分别为1.71%和1.81%;平均含量分别为0.473、0.342 mg/g。结论该法操作简便、准确,稳定性及重复性好,可用于对百华花楸果实中金丝桃苷和芦丁成分的含量测定。     

四妙勇安汤中甘草苷、金丝桃苷和木犀草苷提取率的拆方分析

目的研究四妙勇安汤的配伍组合对甘草苷、金丝桃苷和木犀草苷提取率的影响。方法将四妙勇安汤拆方,采用HPLC法,SunfireTMC18色谱柱(4.6 mm×150 mm,5μm),流动相为乙腈-0.1%磷酸等梯度洗脱,流速1.0 m L/min,检测波长276 nm(甘草苷)、350 nm(金丝桃苷、木犀草苷),柱温35℃,分析各组合样品中甘草苷、金丝桃苷和木犀草苷含量并计算提取率。结果与单味药相比,配伍药味越多,甘草苷、金丝桃苷和木犀草苷的提取率越高,全方合煎后,3种成分提取率均达到最高。结论配伍可以明显提高四妙勇安汤中甘草苷、金丝桃苷和木犀草苷的提取率,从化学成分提取率角度验证了复方配伍的科学性和合理性,阐明了中药复方配伍的科学内涵。     

反相高效液相色谱法测定通窍鼻炎颗粒中欧前胡素和黄芪甲苷的含量

目的建立通窍鼻炎颗粒中欧前胡素和黄芪甲苷的反相高效液相色谱法含量测定方法。方法使用高效液相色谱法进行测定,色谱柱:Kromasil C18柱(5μm,10cm×4.6mm),柱温:25℃,检测波长:欧前胡素260nm,黄芪甲苷210nm,流动相:欧前胡素甲醇-水(55:45),黄芪甲苷乙腈-水(30:70),流速:1.0m L/min。结果本文所建立的分析方法获得较高的理论塔板数。该分析方法准确灵敏,欧前胡素在4.45-44.5μg/m L、黄芪甲在1.24-12.4μg/m L的浓度范围内线性关系良好,回收率和精密度良好。结论使用反相高效液相色谱法测定通窍鼻炎颗粒中欧前胡素和黄芪甲苷的含量其检测方法灵敏,结果准确,重现性好,适用于通窍鼻炎颗粒的质量控制。     

HPLC法测定不同干燥方法的贯叶连翘中黄酮类化合物的含量

目的研究HPLC测定条件,并测定不同干燥方法贯叶连翘中黄酮类化合物芦丁、金丝桃苷的含量.方法色谱柱DiscoveryC18(5μm,25cm×4.6mm);流动相水-乙腈-磷酸(825∶175∶1);流速1.0mL/min;检测波长365nm.结果60℃烘干4h贯叶连翘中芦丁和金丝桃苷的含量最高,总含量可达到1.677%.芦丁的线性范围为0.107～2.675μg,平均回收率为99.32%,RSD=1.007%,金丝桃苷的线性范围为0.107～2.675μg,平均回收率为99.54%,RSD=3.591%.结论该方法分析简便、灵敏、迅速、准确.     

HPLC法同时测定萹蓄药材中8种活性成分的含量

目的 建立同时分离测定萹蓄药材中绿原酸、槲皮苷、杨梅苷、金丝桃苷、木犀草苷、槲皮素、山奈素、咖啡酸等8种有效成分含量的高效液相色谱方法.方法 采用Ultimate XB-C18色谱柱(4.6 mm×250 mm,5μm),以乙腈-0.5％磷酸水为流动相进行梯度洗脱;柱温45℃;流速1.0 mL/min;检测波长360 ...     

藏药烈香杜鹃质量标准提高研究

目的 建立藏药烈香杜鹃的质量标准。方法 采用薄层色谱(TLC)法对藏药烈香杜鹃进行定性鉴别,采用高效液相色谱(HPLC)法对烈香杜鹃中的金丝桃苷进行含量测定,参照《中华人民共和国药典(四部)》2015年版测定烈香杜鹃中水分、灰分、浸出物含量。色谱柱为Agilent Eclipse Plus C₁₈(250.0 mm×4.6 mm,5μm),流动相为甲醇(A)-0.1%磷酸(B),梯度洗脱,流速1.0 m L/min,进样量10μL,柱温30℃,检测波长254 nm。结果 薄层鉴别斑点清晰,分离度好;金丝桃苷回归方程为Y=27 273.04X+30 964.16,r=1.0000,线性范围24.60～81.99μg;烈香杜鹃水分不得超过8.00%,总灰分不得超过10.00%,酸不溶性灰分不得超过4.00%,醇溶性浸出物不得低于16.00%。结论 建立的方法简便、易操作,结果准确,能有效控制烈香杜鹃的药材质量。     

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.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

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.