大孔吸附树脂法分离白芍中芍药苷和总苷

目的 :进行白芍中芍药苷及白芍总苷类成分富集。方法 :采用 70 %乙醇提取、X型大孔吸附树脂纯化的方法。结果 :提取物中的芍药苷含量达到 30 % ,白芍总苷含量达到 6 0 %。结论 :X型大孔吸附树脂法适合分离纯化白芍中芍药苷及白芍总苷成分     

不同产地白芍芍药苷含量的测定和比较研究

目的:利用白芍的不同鉴别方法,主要采用HPLC法进行不同的产地白芍药材中芍药苷含量的比较分析.方法:以峰面积之比等于含量之比测出白芍中芍药苷的含量.采用Hypersiol ODS色谱柱(4.6×200mm,5μm);流动相为乙腈:0.05%磷酸水=12:88;检测波长230nm;流速1ml/min;柱温25℃.结:4年生亳白芍的含量最高.结论:该方法简便,准确可靠,重复性好,而对于道地白芍的选用应该注意产地.     

白芍萜苷类成分的快速分离制备及结构鉴定

目的研究白芍中5种萜苷类成分的快速分离制备及结构鉴定。方法采用质谱引导自动纯化系统分离白芍中5种萜苷类成分,应用1H-NMR、13C-NMR、HR-MS波谱法进行结构鉴定;以Ultimate XB-C18柱（22 mm×250 mm,10μm）、乙腈（B）-0.1%甲酸水（A）为流动相,梯度洗脱,流速:20 m L/min,质谱检测用负离子下选择离子监测模式。结果从白芍中分离得到5个萜苷类化合物:氧化芍药苷、芍药苷亚硫酸酯、芍药内酯苷、芍药苷、苯甲酰芍药苷。结论用质谱引导分离纯化效率高,目标性强,可快速获得5个白芍单萜苷类化合物。     

RP-HPLC法测定杭白芍及其饮片中芍药内酯苷、芍药苷和苯甲酰芍药苷

目的 采用HPLC法测定杭白芍药材与饮片中芍药内酯苷、芍药苷和苯甲酰芍药苷3种成分的量.方法 色谱柱为Zorbax SB-C18柱;流动相为0.05%磷酸水溶液-0.05%磷酸乙腈溶液;梯度洗脱;体积流量l mL/min柱温30℃;检测波长230 nm.结果 芍药内酯苷在0.131 ～ 1.31μg,芍药苷在0.425～4.25 μg,苯甲酰芍药苷在0.086～0.576μg与峰面积呈良好的线性关系.加样回收率分别为芍药内酯苷96.6%(RSD为1.2%),芍药苷98.7%(RSD为2.3%),苯甲酰芍药苷97.4%(RSD为1.7%).结论 所建立的方法适合杭白芍中有效成分的测定,并且杭白芍药材中芍药内酯苷、芍药苷和苯甲酰芍药苷的量高于饮片.     

膜分离与大孔树脂吸附技术在赤芍总苷提取与分离中的应用

目的 提取分离赤芍药材中的赤芍总苷。方法 使用膜分离及大孔树脂吸附方法,提取、分离、纯化赤芍总苷。结果 提取得到的赤芍总苷,其总苷含量以芍药苷计迭85％以上;其中芍药苷含量可达75％。结论 采用膜分离及大孔树脂吸附技术,提取分离、纯化赤芍总苷,方法可行。      

不同产地白芍HPLC指纹图谱及芍药苷和芍药内酯苷含量的比较研究

目的 建立湘白芍、毫白芍与抗白芍HPLC指纹图谱分析方法,并对3种不同产地药材进行主要化学成分的比较.方法 采用HPLC对11批白芍样品进行指纹图谱分析,并测定了主要化学成分芍药苷和芍药内酯苷的含量.结果 所建立的方法精密度、稳定性和重现性良好;11批白芍样品的指纹图谱有8个共有峰.结论 通过建立白芍指纹图谱的定性、芍药苷及芍药内酯苷的定量,为白芍的质量控制提供了更为全面的方法.     

白芍药材产地加工可行性研究

为了研究白芍药材产地加工的可行性,用对比方法,用高效液相色谱法,对白芍药材产地加工与药典法加工进行芍药苷含量的测定,结果提示2种加工方法的芍药苷含量无显著性差异。结论：白芍药材鲜货产地加工是可行的。     

赤芍与白芍的化学成分含量比较研究

目的:比较赤芍与白芍的化学成分含量。方法:利用高效毛细管电泳法,测定不同产地赤芍与白芍的4种代表向活性成分,观察各化学成分间的关系。结果:野生芍药根赤芍中芍药苷含量6%、D-儿茶素含量0.05%;栽培芍药跟白芍中芍药苷含量6%;内蒙古赤芍与吉林、黑龙江所产赤芍的化学成分含量及种类存在显著差异,不同产地白芍的化学成分含量各异。结论:比较赤芍与白芍化学成分含量时,采用HPCE技术,提高了分析了准确性,为临床用药提供了可靠的依据。     

RP-HPLC法测定赤芍药材中没食子酸、儿茶素、芍药苷、芍药内酯苷、苯甲酸

目的建立了用RP-HPLC对赤芍中没食子酸、儿茶素、芍药苷、芍药内酯苷、苯甲酸同时定量的方法,并对不同产地赤芍药材进行考察。方法高效液相色谱法,色谱柱为Waters Sunfire columns C18(150 mm×4.6 mm,5μm),流动相为甲醇-乙腈-0.1%磷酸梯度洗脱;检测波长采用变波长检测;柱温为40℃;进样量为10μL。同时测定了赤芍中没食子酸、儿茶素、芍药苷、芍药内酯苷、苯甲酸的量。结果没食子酸在0.013～0.506μg线性关系良好(r=0.999 6)、儿茶素在0.025～0.993 6μg线性关系良好(r=0.999 7)、芍药苷在0.200～8.017μg线性关系良好(r=0.999 6)、芍药内酯苷在0.030～1.184μg线性关系良好(r=0.999 6)、苯甲酸在0.037～1.485μg线性关系良好(r=0.999 6)。平均回收率没食子酸为98.08%,RSD为1.65%;儿茶素为101.80%,RSD为3.07%;芍药内酯苷为99.18%,RSD为3.25%;芍药苷为95.95%,RSD为1.39%;苯甲酸为101.85%,RSD为1.35%。结论本方法测定了不同产地、不同批号赤芍样品中5种化学成分的量,该方法分离度好,快速,简便,重现性好。     

硫熏对白芍芍药苷和总苷含量的影响研究

[目的]研究白芍产地加工过程中,硫磺熏蒸对其有效成分的影响。[方法]采用高效液相色谱法,对硫熏前后的白芍有效成分芍药苷和白芍总苷含量进行测定。[结果]硫磺熏制后,白芍中芍药苷的含量急剧下降,而白芍总苷的含量下降不明显。[结论]硫熏法对白芍中的芍药苷有较强的破坏,产地加工应严格控制硫熏。     

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.