贯叶金丝桃中贯叶金丝桃素提取及含量测定研究

目的:采用低温超声波提取贯叶金丝桃素,建立贯叶金丝桃中贯叶金丝桃素含量测定方法。方法:用高效液相色谱法测定。色谱柱:十八烷基硅烷键合硅胶柱,流动相:0.1%磷酸—乙腈(10∶90),流速(1.0 mL/min),检测波长210 nm,柱温:25℃。结果:线性范围:1.8930~4.4170μg。稳定性:RSD=0.70%,n=5。精密度:RSD=1.06%,n=6。重复性:RSD=0.87%,n=5。回收率:99.13%,RSD=1.20%,n=9。符合有关规定,其他方法学考查均符合有关规定。结论:此方法专属性强、重复性好,可用于贯叶金丝桃原料及提取物中贯叶金丝桃素含量测定。     

贯叶金丝桃中多糖含量的测定

目的:测定贯叶金丝桃中多糖的含量.方法:采用苯酚-硫酸比色法测定,λmax=490 nm.结果:5批贯叶金丝桃中多糖的含量分别为:0.169%、0.175%、0.179%、0.165%和0.171%.平均含量为(0.172±0.005)%,RSD为3.15%(n=5).结论:贯叶金丝桃中多糖含量较高,值得进一步研究利用.     

两种不同的贯叶金丝桃提取物多次口服对健康人的光毒性作用

金丝桃属植物提取物中的金丝桃素和伪金丝桃素被认为是强的光敏剂，食草动物超量服用、人服用高浓度该植物提取物后可引起光毒性反应。作者研究了2种不同的贯叶金丝桃提取物STW3和STW3-Ⅵ对健康参试者的光敏性。     

HPLC测定鹿衔草提取物中金丝桃苷的含量

目的 建立鹿衔草提取物中金丝桃苷的含量测定方法 . 方法 采用高效液相色谱法(HPLC)测定.色谱柱Dimonsil C18柱,以甲醇∶ 0.2%磷酸(三乙胺调节pH3.0)(45∶ 55)为流动相,检测波长为360 nm. 结果金丝桃苷在15.6-78.0 μg/ml范围内线性良好,r=0.999 9,加样回收率为99.88%,RSD为1.14%(n=9). 结论 HPLC法测定鹿衔草提取物中金丝桃苷的含量,结果准确可行.     

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。     

贯叶连翘不同部位金丝桃素含量分析

贯叶连翘为藤黄科植物(亦称金丝桃属植物)贯叶连翘Hypericum perforatum L的干燥全草,全球均有分布,国内主要集中在西南地区.<中药大辞典>有详细记载.功能清热解毒,收敛止血、利湿.中外民间在用于出血、汤火灼伤、妇科、外伤、抑郁等症的治疗方面均有悠久历史.药理实验证明,本品主要成分金丝桃素(hypericin),不仅能抗病毒、抗炎、抗肿瘤,更有抗逆转录病毒及抑制HIV活性的作用[1].笔者参照相关文献,建立了HPLC法,测定夏秋二季贯叶连翘不同部位含量,并作比较分析,以探索贯叶连翘的最佳采收季节和金丝桃素提取物的质量控制.     

HPLC法测定贯叶连翘中贯叶金丝桃素含量

目的：测定贯叶连翘中贯叶金丝桃素的含量。方法：采用HPLC法,流动相：乙腈－水（140：1,内含1％冰醋酸）,流速：1mL/min,检测波长276nm,结果：该法的平均回收率为98．47％,RSD＝1．33％。结论：方法可用于贯叶金丝桃药材及其制剂 质量控制。     

091 单次量或多次口服含贯叶金丝桃提取物的片剂后，金丝桃素等5种成分生物利用度的Ⅰ期临床观察

作者进行了2项开放性临床观察，研究了单次量或多次口服含贯叶金丝桃提取物（STW-3，Lair600）的片剂后，金丝桃素、伪金丝桃素、贯叶金丝桃素、槲皮素和异鼠李素等5种成分的生物利用度。     

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.     

复方心安胶囊质量标准的研究

目的 建立心安胶囊(山楂叶)中金丝桃苷的含量测定方法.方法 采用高效液相色谱法.色谱柱:Shim-pack VP-ODS (250 mm×4.6 mm,5 μm);流动相为乙腈-3 %磷酸溶液(16.5:83.5);流速:l mL/min;柱温:35 ℃;检测波长为360 nm.结果 金丝桃苷的线性范围为0.178 8 ～0.894 0 μg (r = 0.999 9);平均回收率为98.14 %,RSD为1.61 %(n = 5).结论 本文方法简便、准确,可作为心安胶囊的含量测定方法.     

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.