龙胆药材的HPLC指纹图谱研究

目的建立不同产地龙胆药材的HPLC指纹图谱,为整体控制和评价龙胆药材的质量提供依据。方法采用HPLC测定10个不同产地的龙胆药材,制定指纹图谱。色谱条件:ODS柱,甲醇-水为流动相梯度洗脱,检测波长254 nm,体积流量1.0 mL/min,柱温25℃。结果建立了龙胆药材HPLC指纹图谱的共有模式,并对不同产地的药材进行了相似度评价。结论HPLC指纹图谱稳定性、重现性好,简便可行,适用于龙胆药材的标准化种植及质量控制。     

蓬子菜药材HPLC指纹图谱研究

目的建立蓬子菜药材的HPLC指纹图谱。方法以香叶木苷为内标物,采用高效液相色谱法分析不同产地10个蓬子菜样品,并进行相似度计算。色谱条件Hypersil ODS2柱(200mm×4.6mm,5μm);流动相为甲醇-0.4%醋酸溶液梯度洗脱;体积流量为1.0mL/min;检测波长340nm;柱温26℃。结果本研究建立了具有19个共有峰的蓬子菜药材指纹图谱,各色谱峰分离较好,达到指纹图谱要求。结论本方法重现性好,可用于不同产地蓬子菜药材的指纹图谱的测定和质量评价。     

河北道地药材酸枣仁HPLC-ELSD指纹图谱研究

目的建立河北道地药材酸枣仁的HPLC-ELSD指纹图谱,为科学评价及有效控制酸枣仁药材质量提供新方法。方法收集不同产地酸枣仁药材21批,采用HPLC-ELSD法测定其指纹图谱。色谱条件:C18柱,乙腈-水为流动相进行梯度洗脱,ELSD检测器,体积流量1.0mL/min,柱温35℃。结果建立了道地酸枣仁药材HPLC-ELSD指纹图谱共有模式,并对不同产地酸枣仁药材进行了相似度比较。结论方法简便、可靠,可用于不同产地酸枣仁药材的指纹图谱测定和质量评价,为有效控制酸枣仁药材的内在质量提供依据。     

金莲花药材HPLC指纹图谱研究

目的建立金莲花药材的HPLC指纹图谱。方法以荭草苷为内标物,采用HPLC法分析10个不同产地金莲花样品的黄酮苷,并进行相似度计算。色谱条件:Hypersil C18柱(200mm×4.6mm,5μm),流动相为甲醇-水梯度洗脱,体积流量为1.0mL/min,检测波长340nm,柱温45℃。结果本研究建立的分析方法有较好的重复性,不同产地的金莲花药材色谱峰面积比值有一定的差异。结论本法操作简便,重现性好,可用于不同产地药材的指纹图谱的测定和质量评价。     

不同产地丹参药材指纹图谱比较研究

【目的】通过建立丹参药材的HPLC指纹图谱对不同产地丹参药材质量进行比较。【方法】采用C18柱,色谱柱为HypersilODS2(250 mm×4.6 mm,5μm);流动相为乙腈-0.5%冰乙酸溶液梯度洗脱;柱温为30℃;流速为1.0 ml/min;检测波长为270 nm;洗脱时间75 min;进样量20μl。【结果】用相似度软件对来自5个不同产地的10批药材指纹图谱进行分析,标定了8个共有峰,相似度评价均在0.9以上。【结论】通过丹参药材指纹图谱的比较,可为不同产地丹参药材遴选提供依据。     

河北道地药材远志HPLC-UV指纹图谱研究

目的 建立河北道地药材远志的HPLC-UV指纹图谱,获得对照图谱,并与不同产地远志药材指纹图谱相比较,为有效控制远志质量提供方法.方法 采用HPLC-UV法得到了19批远志样品指纹图谱.色谱条件:Waters 1525高效液相色谱仪,C18柱(250 mm×4.6 mm,5μm),乙腈-0.2%甲酸溶液为流动相进行梯度洗脱,检测波长316 nm,体积流量1.0 mL/min,柱温35℃.结果 建立了河北省远志药材HPLC-UV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 本方法操作简便、快速、准确,为远志药材的鉴别和质量的全面控制提供了依据.     

土贝母的HPLC指纹图谱研究

目的采用HPLC法研究并建立各产地土贝母药材的指纹图谱。方法用Alltech C18柱(250mm×4.6mm,5μm);流动相:乙腈-水,梯度洗脱;体积流量:1.0mL/min,在230和203nm波长处测定了15个不同产地的土贝母药材,并用聚类分析和相似度计算进行数据分析。结果建立了土贝母药材的HPLC指纹图谱,标定了18个共有指纹峰,方法学考察结果符合指纹图谱技术要求,经相似度计算,各产地药材之间的相似性良好。结论方法稳定、可靠、重现性好,可用来控制土贝母药材的质量。     

相同产地黄芩HPLC指纹图谱研究

目的：建立相同产地黄芩药材的HPLC指纹图谱,以探讨相同产地黄芩药材的个体差异。方法：采用HPLC法测定20个采自内蒙古赤峰的黄芩样品的HPLC指纹图谱,色谱条件：Agilent TC-C18柱(4.6mm×250mm,5μm),乙腈与0.1%冰醋酸溶液进行梯度洗脱,检测波长276nm,流速1ml/min,柱温25℃。运用中药色谱指纹图谱相似度评价系统分析各个样品的相似度。结果：20个黄芩药材样品的HPLC指纹图谱主要有6个共有峰,样品相似度均达到0.9以上,但共有峰相对面积有一定的差异。结论：相同产地黄芩HPLC指纹图谱分析方法可靠,可为以后研究不同产地黄芩药材HPLC指纹图谱奠定基础。     

不同产地金银花药材高效液相指纹图谱的研究

目的:研究并建立三个不同产地金银花药材的指纹图谱.方法:采用岛津C18色谱柱(250 mm×4.6 mm,5μm);以乙腈-0.1%磷酸水溶液梯度洗脱,流速1.0 ml/min,柱温40℃,检测波长254 nm.结果:建立了金银花药材HPLC指纹图谱共有模式,三个不同产地金银花相似度均在0.95以上.结论:该方法特征性强、简便.     

不同产地黄芩药材HPLC指纹图谱的研究

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。     

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.