潞党参极性和非极性成分HPLC指纹图谱研究

目的研究并建立潞党参药材极性和非极性成分HPLC指纹图谱,为党参质量控制提供依据。方法采用HPLC-UV法分别建立潞党药材中极性和非极性成分指纹图谱,色谱条件为:Diamonsil C18色谱柱(200 mm×4.6 mm,5μm);检测波长分别为266 nm和230 nm;流动相:乙腈-水,分别进行梯度洗脱,对山西不同产地潞党参药材进行分析。结果潞党参药材非极性部分指纹图谱有9个共有峰,极性部分指纹图谱有13个共有峰,山西不同产地潞党参极性和非极性指纹图谱相似度较高(>0.87)。结论本文所建立的潞党参药材的HPLC指纹图谱方法简便、准确、重现性好,可作为党参药材质量均一性评价的基础。     

党参质量评价体系的建立及不同产地党参质量差异性分析

目的 多点采样研究并建立党参质量评价体系,采用其对不同来源的党参进行质量差异性分析。方法 对党参的总灰分、酸不溶灰分、醇溶性浸出物进行测定,采用HPLC-DAD对党参炔苷进行测定并建立HPLC指纹图谱;将指标与指纹图谱结合起来建立党参质量评价体系;用建立的质量评价体系对不同来源的党参样品进行质量评价。结果 不同产地灰分和酸不溶灰分检测结果显示,符合《中国药典》2010年版标准;而不同来源党参炔苷量具有显著性差异;不同产地的党参指纹图谱具有9个共有峰,相关系数均在0.8以上,建立的指纹图谱可用于党参质量评价。结论 本研究用多指标检测结合指纹图谱建立的党参质量评价体系可用于不同来源党参的质量评价及质量控制。     

不同产地党参HPLC指纹图谱研究及比较

目的:研究不同产地党参的指纹图谱。方法:采用反相高效液相色谱法,色谱柱:Grace Smart RP C18柱(250nm×4.6nm,5μm),以乙腈-0.1%醋酸为流动相进行二元梯度洗脱,流速0.6mL/min,检测波长268nm,柱温30℃。结果:党参样品HPLC指纹图谱可明确显示不同党参样品的差异性和相似性,精密度、稳定性和重复性实验的RSD均小于3%,用党参炔苷作为参照物可确认党参样品中的活性成分。结论:本方法操作简便,结果稳定可靠,且利用指纹图谱的整体性,可以对不同产地党参药材进行真伪鉴别,并对质量进行定性、定量评价。     

川芎药材化学成分HPLC指纹图谱研究

目的通过川芎药材化学成分指纹图谱的研究,进一步研究川芎有效物质基础成分。方法采用反相高效液相色谱法,以梯度洗脱的方式,60 m in内在同一谱中同时完成水溶性成分和脂溶性成分的指纹图谱建立。结果通过四川省4个地区20批川芎药材的化学成分指纹图谱的分析,以平均数法模拟了具有18个共有峰的川芎药材化学成分指纹图谱;并进行了不同等级、不同产地川芎化学成分指纹图谱的分析。结论本方法不但可以用于川芎药材质量控制,还可以作为探索中药川芎有效物质基础研究的有效手段。     

丹参药材化学成分HPLC指纹图谱研究

目的通过丹参药材化学成分指纹图谱的研究,进一步研究丹参有效物质基础成分。方法采用反相高效液相色谱法,以梯度洗脱的方式,60min内在同一谱中同时完成水溶性成分和脂溶性成分的指纹图谱建立。结果通过6个省30批丹参药材的化学成分指纹图谱的分析,以平均数法模拟了具有18个共有峰的丹参药材化学成分指纹图谱;并进行了不同等级、不同产地丹参化学成分指纹图谱的分析。结论本方法不但可以用于丹参药材质量控制,还可以作为探索中药丹参有效物质基础研究的有力手段。     

北柴胡气相指纹图谱数据的化学计量学分析

目的 对北柴胡挥发性成分的气相指纹图谱进行化学计量学研究,提取出指纹图谱中的特征数据信息。方法 运用Agilent 7890A气相色谱仪,安捷伦HP-5毛细管气相色谱柱(30 m×0.25 mm,0.25 µm),载气为氮气,流速为1.03 mL·min-1,FID检测温度为280 ℃,对不同产地北柴胡样品进行分析。运用指纹图谱处理软件对指纹图谱数据进行相似度分析、聚类分析及主成分分析。结果 建立了北柴胡挥发性成分的指纹图谱共有模式,获得了28个共有峰。依据化学计量学分析,将样品分成了3类。结论 结果表明化学计量学分析方法适用于指纹图谱数据的分析,可为定量研究提供依据,有助于柴胡药材的质量评价研究。     

炮制与配伍对干姜-五味子药对11种成分含量和指纹图谱的影响

[目的]建立干姜-五味子药对11种成分含量测定和指纹图谱方法,明确炮制-配伍对药对成分含量和指纹图谱的影响.[方法]将不同产地的干姜采用砂烫法炮制为炮姜,干姜、炮姜分别与五味子配伍成药对.采用UPLC法测定样品中11种指标性成分的含量,分析其指纹图谱的相似性;通过聚类分析及主成分分析研究药对之间的差异性.[结果]炮制前...     

决明子的HPLC指纹图谱及模式识别研究

目的 研究决明子药材的质量控制方法。方法 采用高效液相色谱法建立了决明子药材的HPLC的指纹图谱,收集了32批样品进行测定,并使用聚类分析和主成分分析对指纹图谱进行了模式识别研究。结果 建立了决明子药材的指纹图谱。结论 方法可用于决明子质量控制及综合评价。     

“区间指纹图谱”的构思与研究

目前指纹图谱已成为国际公认的控制中药或天然药物质量的有效手段。近年来对中药指纹图谱进行了很多探索性研究,但是真正将指纹图谱作为质量标准的只有中药注射剂,而其他的中药指纹图谱研究多只停留在研究阶段。造成中药指纹图谱研究瓶颈的原因很多,如天然产物成分的复杂性,指纹图谱的分析结果中往往有大量的杂质峰群存在,而现有的分析手段很难使这些杂质峰群达到很好的分离,为此提出了构建“区间指纹图谱”。对“区间指纹图谱”构建程序、建立方法、构建模式、应用问题等进行了较全面地研究和分析,并以神安颗粒为例进行了分析。     

不同基原大黄指纹图谱、多成分定量结合多元统计分析的质量评价研究

目的 建立3种基原大黄(掌叶大黄、药用大黄、唐古特大黄)指纹图谱和多成分含量测定方法.方法 采用UPLC法同时测定51批大黄指纹图谱及14个化学成分含量,并通过指纹图谱相似度分析、聚类分析、主成分分析(PCA)和偏最小二乘法判别分析(PLS-DA)对不同基原大黄药材进行全面质量评价.结果 建立了3种基原大黄的指纹图谱,...     

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.