覆盆子药材的HPLC特征指纹图谱研究

目的:采用HPLC法建立覆盆子药材的指纹图谱。方法:应用Hypersil ODS C18色谱柱、1%冰醋酸水溶液和甲醇采用梯度洗脱,流速1ml/min,检测波长266nm。结果:精密度和重现性试验中各共有峰相对面积的RSD均小于5%,符合有关规定。结论:HPLC特征指纹图谱可作为控制覆盆子药材内在质量的标准。     

刺五加HPLC/UV/MS指纹图谱研究

目的 :采用HPLC/UV/MS法分别对刺五加药材水溶性和脂溶性成分进行指纹图谱研究 ,并对其主要成分进行定性。方法 :采用岛津ODSC18(4 6mm× 15 0mm ,5 μm)柱和AgilentZORBAXSB C18柱 (2 5 0mm× 4 6mm ,5 μm) ,分别用 0 5 %冰醋酸乙腈、0 5 %冰醋酸、乙腈、0 1%甲酸为流动相梯度洗脱 ,流速 :1ml/min。 结果 :得到分离度和重现性均较好的刺五加药材HPLC/UV及HPLC/MS指纹图谱 ,并分别对水溶性成分指纹图谱中 5个色谱峰和脂溶性成分指纹图谱中 8个色谱峰进行了初步定性。结论 :本方法可用于刺五加药材的指纹图谱测定 ,并为其质量控制提供参考。     

高效液相色谱法测定5种不同产地丹参中丹参素和原儿茶醛含量

目的 :测定 5种产地丹参中丹参素、原儿茶醛的含量。方法 :采用高效液相色谱法 ,Kro masil分析柱 (2 5 0mm× 4 6mm ,5 μm ;流动相 :甲醇 10g/L冰醋酸 2 0 80 ;紫外检测波长 :2 80nm ;流速 :1.0ml/min。结果 :丹参素在 4 .2～ 33.6 μg/ml,原儿茶醛在 0 .36～ 1.80 μg/ml范围内线性关系良好 ,丹参素和原儿茶醛最低检测限分别为 10 .5ng和 0 .6ng ,回收率分别为 99.36 % (RSD为 1.2 6 % )和 97.5 4% (RSD为 0 .81% )。结论 :该方法简便、灵敏、准确 ,样品处理简便易行 ,在考察评价丹参药材质量上有实用价值。不同产地的丹参 ,其丹参素和原儿茶醛含量有一定差异。     

高效液相色谱法测定丹参药材中丹参素的含量

目的：采用高效液相色谱法测定丹参药材中丹参素的含量。方法：以甲醇-0．5％冰醋酸(1：10)作为流动相，流速为1．0ml／min。结果：丹参中丹参素的含量为0．18％，回收率101．83％，RSD为0．176％。结论：此法可作为丹参和复方丹参制剂质量控制的标准。     

天麻药材HPLC指纹图谱研究

目的:研究天麻药材的HPLC 指纹图谱,为天麻药材的质量控制提供可靠方法.方法:采用HPLC 法.色谱柱为Ultimate XB-C18 柱(250mm×4.6mm,5μm),流动相为甲醇-1% 冰醋酸水溶液,梯度洗脱,柱温为30℃,流速1ml·min-1,检测波长270nm.结果:初步建立了天麻药材的HPLC 指纹图谱,标定出16 个共有峰,天麻素的加样加收率为102.66%,RSD<2.5%.结论:HPLC 指纹图谱可为天麻药材质量控制提供一种新模式,并可为未知天麻样品鉴别提供一个准确、快捷的工具.     

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。     

黄芩指纹图谱的研究

目的：建立黄芩药材的HPLC指纹图谱,优化黄芩的提取方法和色谱条件,确定某些化学成分。方法：采用梯度洗脱方法进行色谱分离,AgilentTC-C18柱（4.6mm×250mm,5μm）,流动相：乙腈与0.1％冰醋酸溶液进行梯度洗脱,检测波长276nm,流速1.0ml／min,柱温25℃,使用标准品对其化学成分进行确定。结果：以水：乙醇：乙酸乙酯：冰醋酸（50：49：5：1）为提取溶剂,以乙腈与0.1％冰醋酸溶液进行梯度洗脱色谱峰分离效果较好并确定7种化学成分,优化了黄芩药材的HPLC指纹图谱。结论：本文建立的方法能较多的分离出色谱峰,可为黄芩药材的指纹图谱评价及物质基础的确定提供依据。     

丹参药材的综合质量评价研究

目的 建立丹参药材HPLC方法同时用于指纹图谱和多指标测定。方法 采用Diamonsil C₁₈柱（250 mm×4.6 mm,5 μm）,在280 nm波长下,以乙腈-0.05%磷酸水溶液梯度洗脱,测定了19批丹参药材的指纹图谱和丹参素、迷迭香酸、丹酚酸B及丹参酮Ⅱ_A 4个指标成分,对指纹图谱共有峰和相似度进行分析,并进行聚类分析和主成分分析。结果 在选定的色谱条件下,得到19批丹参药材的指纹图谱,标定了12个共有峰,并建立了丹参药材的指纹图谱共有模式,相似度在0.808～0.997。聚类分析结果将19批丹参药材分为两大类,与主成分分析结果及药材测定结果相一致。结论 不同产地丹参药材色谱峰的数目差别不大,但各指标成分量差别较大。该方法准确、可靠,为有效地评价丹参药材的综合质量提供了参考依据。     

RP-HPLC法测定枳实药材中橙皮苷含量

目的 :建立用反相高效液相色谱 (RP HPLC)测定枳实药材中橙皮苷含量的方法。方法 :采用色谱柱为HypersilODS2 5μmC1 8柱 (2 50mm× 4 6mm) ;流动相为乙腈 1 %冰醋酸水溶液 (2 0∶80 ) ;检测波长 :2 83nm ;参比波长 360nm ;流速 1 0mL/min。结果 :橙皮苷的线性范围分别为 0 40 7～ 3 2 56μg,橙皮苷的平均回收率为 1 0 1 5 %。结论 :RP HPLC测定枳实药材中橙皮苷含量的方法 ,不仅操作简便、准确 ,而且重现性好     

丹参及丹参注射液指纹图谱的HPLC-MS研究

目的 采用HPLC－UV－MS法对丹参药材、丹参注射液中间体及丹参注射液进行指纹图谱的研究。方法 采用Alltima C18分析柱，甲醇－水－冰醋酸梯度洗脱系统，流速：1mL/min，检测波长：281nm，MS册时记录总离子流（TIC）色谱图。结果 得到分离度较好的丹参药材、中间体及注射液的HPLC－UV及HPLC－MS指纹图谱。结论为丹参药材、中间体及注射液的质量控制提供全面、可靠的依据。     

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.