一测多评法测定穿心莲及其制剂中内酯类成分

目的 建立穿心莲及其制剂消炎利胆片的一测多评定量测定方法。方法 在建立穿心莲4种主要内酯类成分同步测定方法的基础上,测定新穿心莲内酯、去氧穿心莲内酯和脱水穿心莲内酯与穿心莲内酯的相对校正因子,考察其重现性,并在穿心莲药材及消炎利胆片中加以应用;同时采用外标法测定其中4种内酯类成分的量,并比较计算值与实测值的差异。结果 用一测多评法对39批穿心莲药材和30批消炎利胆片中4种内酯类成分进行测定,药材测定计算值与实测值（外标法）相对误差＜5%,消炎利胆片测定计算值与实测值（外标法）相对误差＜8%。结论 同步测定穿心莲内酯、新穿心莲内酯、去氧穿心莲内酯和脱水穿心莲内酯的一测多评法可用于穿心莲药材及消炎利胆片的质量控制。     

HPLC法测定清感穿心莲片中穿心莲内酯和脱水穿心莲内酯的含量

【目的】建立清感穿心莲片中穿心莲内酯和脱水穿心莲内酯的含量测定方法。【方法】采用高效液相色谱法:色谱柱为资生堂CAPCELL PAK C18柱(4.6 mm×250 mm,5μm);流动相:甲醇∶水(52∶48);检测波长:254 nm;流速:1.0 ml/min;柱温:40℃。【结果】穿心莲内酯在0.2~3μg(r=0.9999)、脱水穿心莲内酯在0.2~3μg(r=0.9999)范围内线性关系良好。穿心莲内酯和脱水穿心莲内酯的平均回收率分别为99.45%(RSD=0.19%,n=6),99.57%(RSD=0.19%,n=6)。【结论】该方法简便、准确、重复性好,可用于该制剂中有效成分的含量测定。     

正交试验优选穿心莲的提取工艺研究

目的 为提高穿心莲的浸膏量及其有效成分内酯的收率而优化提取工艺。方法 以乙醇体积分数、用量、提取时间和次数为因素,浸膏得率和内酯得率为优化指标采用正交试验设计法进行优化。结果 用6倍于原料的80%乙醇提取3次,每次1.5 h,浸膏得率≥10%,有效成分穿心莲内酯和脱水穿心莲内酯的收率较高。结论 穿心莲提取工艺采用正交试验分析比较合理。     

HPLC法测定复方穿心莲片中脱水穿心莲内酯的含量

目的建立高效液相色谱法测定复方穿心莲片中脱水穿心莲内酯的含量。方法色谱柱：ChromasilC18（5μm,250×4．6mm）;流动相：甲醇：水（60：40）;流速：1ml／min;柱温：30℃;检测波长：250nm。结果脱水穿心莲内酯进样量在0．194—1．94μg范围内与峰面积线性关系良好（r=0．9998）,平均回收率为99．4％,RSD为1．41％。结论本法灵敏度高、操作简便、结果准确,可作为复方穿心莲片的含量测定方法。     

UPLC法同时测定穿心莲药材中穿心莲内酯和脱水穿心莲内酯含量

目的：建立以超高效液相色谱法同时测定穿心莲药材中穿心莲内酯和脱水穿心莲内酯含量的方法.方法：色谱柱：Shi-madzu Shim-pack XR-ODSⅢ（2.0mm×75mm,1.6μm）;流动相：甲醇-水（48：52）;流速：0.3mL/min;检测波长：穿心莲内酯为225nm,脱水穿心莲内酯为254nm;柱温：30℃.结果：穿心莲内酯在10.065～ 161.04ng（r =0.9996）、脱水穿心莲内酯在5.14～82.24ng（r =0.9998）范围内,呈良好的线性关系.穿心莲内酯平均回收率为99.25％,RSD=1.03％（n=6）;脱水穿心莲内酯平均回收率为98.43％,RSD=1.33％ （n =6）.结论：本法重复性好、灵敏度高、定量准确,可用于穿心莲药材的质量控制.     

HPLC法测定穿心莲叶中穿心莲内酯和脱水穿心莲内酯的含量

目的:测定不同产地的穿心莲药材中穿心莲内酯和脱水穿心莲内酯的含量。方法:采用高效液相色谱(HPLC)法,Merck-Lichrospher RP-C18柱(4.6mm×250mm,5μm),流动相为甲醇-水(60∶40);检测波长:226nm(用于检测穿心莲内酯),254nm(用于检测脱水穿心莲内酯);流速:0.8ml/min;柱温:35℃。结果:实验表明测定方法在4h内是稳定的,穿心莲内酯线性范围0.050~1.500μg,脱水穿心莲内酯线性范围0.048~1.440μg,平均加样回收率分别为100.9%和98.2%,RSD分别为3.4%(n=6)和3.2%(n=6)。结论:用HPLC法测定穿心莲药材中穿心莲内酯和脱水穿心莲内酯的含量方法准确、灵敏、稳定,可作为控制穿心莲质量的方法。     

复方胆通片中脱水穿心莲内酯定量方法研究

采用HPLC法测定复方胆通片中脱水穿心莲内酯含量。色谱柱为C18柱，用Φ（甲醇：水）＝55：45作为流动相，流速1.0mL/min，检测波长为54nm。测定结果：脱水穿心莲内酯在0.40-2.0μg范围内线性系数良好，平均回收率为98.86%,RSD=0.7%。本法灵敏、重现性好，可用于复方胆通片中脱水穿心莲内酯含量的测定。     

HPLC测定复方红根草胶囊中穿心莲内酯和脱水穿心莲内酯含量

目的探讨高效液相色谱法测定复方红根草胶囊中穿心莲内酯和脱水穿心莲内酯。方法采用C18Kromasil(150mm×4.6mm,5μm)色谱柱,甲醇-水(55∶45)为流动相,检测波长穿心莲内酯为225nm,脱水穿心莲内酯为250nm。流速:1.0mLm/in。柱温:35℃。结果穿心莲内酯线性范围在0.04～0.2μg(r=0.9999),脱水穿心莲内酯在0.1～0.5μg(r=0.9999)。平均回收率穿心莲内酯为100.1%,RSD=1.52%,脱水穿心莲内酯为99.6%,RSD=1.47%。结论本法准确、简便、快速,适用于该制剂的质量分析检验。     

高效液相色谱法测定金鸡胶囊中脱水穿心莲内酯的含量

目的:建立高效液相色谱法测定金鸡胶囊中脱水穿心莲内酯的含量。方法:采用色谱柱C1 8(150mm×4.6mm,5μm),流动相为甲醇-水(50∶50),流速1.0mL/min,检测波长250nm,检测脱水穿心莲内酯的含量。结果:脱水穿心莲内酯在8～40μg/mL范围内线性关系良好,回归方程为:Y(峰面积)=131 312 X(对照品溶液取样量)-24 910,r=0.999 9(n=5),平均加样回收率为98.67%(n=6)。结论:高效液相色谱法操作简便,结果准确,重复性好,可用于金鸡胶囊中脱水穿心莲内酯的含量测定。     

HPLC法测定穿心莲片中脱水穿心莲内酯的含量

[目的]采用HPLC法测定穿心莲片中脱水穿心莲内酯的含量。[方法]采用Shim-pack CLC-ODS色谱柱；甲醇-水(70：30)为流动相；流速1．0ml／min；检测波长254nm。[结果]脱水穿心莲内酯线性范围为0．836—8．36／μg，r=0．9996；平均回收率为99．80％，RSD=0．65％。[结论]该方法简便、可靠、准确，可用于该制剂的质量控制。     

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.