小青龙贴中桂皮醛含量测定的研究

目的建立小青龙贴中桂皮醛的含量测定方法。方法采用高效液相色谱法(HPLC)测定,色谱柱Hypersil ODS-C18柱(5μm,4.6 mm×250 mm);流动相:甲醇-0.1%磷酸溶液(35∶65);流速:1.0 mL.min-1;检测波长:290 nm;柱温:30℃;进样量:20μL。结果线性试验中桂皮醛在0.631～5.044μg.mL-1范围内呈良好的线性关系,r=0.999 9;精密度试验中峰面积RSD为0.65%;重复性试验峰面积RSD为0.59%;稳定性试验峰面积RSD为0.93%;平均加样回收率为99.61%,RSD为0.51%(n=6)。结论试验线性关系良好,精密度、稳定性及重现性均良好,加样回收率试验符合要求,可以作为小青龙贴中桂皮醛的含量测定。     

HPLC-ELSD测定盐酸氨基葡萄糖含量

目的: 采用反相高效液相色谱-蒸发光散射检测法(HPLC-ELSD)测定盐酸氨基葡萄糖的含量.方法:色谱柱为C18(250 mm×4.6 mm,5 μm),流动相采用甲醇∶水(60∶40),流速为0.6 mg/ml;用蒸发光散射检测器(ELSD)检测.结果:盐酸氨基葡萄糖检测含量为2.017～10.084 μg时与峰面积呈良好线性关系(r=0.999 5),平均加样回收率为99.4%(RSD=0.9%).结论:此方法简单、准确、无需衍生反应,精密度和重现性良好,是测定盐酸氨基葡萄糖含量的有效方法,可用于氨基葡萄糖配合物含量测定.     

高效液相色谱法测定可乐中咖啡因含量

目的用HPLC测定可乐中咖啡因的含量,建立测定可乐中咖啡因含量的高效液相色谱法的最佳工作条件。方法色谱柱采用kromasilC18柱(250mm×4.6mm,5μm);流动相:甲醇-水(40:60);流速:1.0ml/min;检测波长为275nm;进样量20μl;柱温为室温。结果咖啡因与其它杂质均能达到基线分离,其色谱峰形好。咖啡因的浓度在30～70μg/ml时与峰面积成良好的线性关系(y=27498x+67325,r=0.9994),平均加样回收率为100.1%,方法精密度RSD为1.2%(n=6)。结论该方法准确、简便、快速,适合可乐中咖啡因的含量测定。     

HPLC法测定2年生黄芪中黄芪甲苷的含量

目的:建立一种准确、简便测定黄芪甲苷含量的分析方法.方法:色谱柱为Nucleosil C18柱(46mm×250mm,5μm);流动相为乙腈-水=1:2;流速为0.8ml/min;检测波长为205 nm;速度为0.4mm/min.灵敏度为0.1 AUFS.测定了黄芪甲苷的含量平均回收率为96.1%,RSD为2.15%.结果:样品浓度存0.01～0.2mg\ml之间与峰面积成良好的线性关系.结论:本方法的重复性好、精密度高、稳定性强.     

心可舒胶囊中葛根素的含量测定

目的:测定心可舒胶囊中葛根素的含量.方法:采用高效液相色谱法(HPLC法),色谱柱用C18柱,流动相为甲醇-水(85:15),流速为1.0ml/min,波长为250nm.结果:葛根素在1～5μg/ml范围内浓度与峰面积线性关系良好.平均回收率为98.89%.结论:该法操作简便,结果准确,可用于心可舒胶囊中葛根素的含量测定.     

广东不同产地葛根中葛根素和大豆苷元的含量测定

目的对广东不同产地葛根中葛根素和大豆苷元的含量进行测定,为制定葛根药材质量标准和药材道地性选择提供参考依据。方法采用RP-HPLC法,色谱柱为Phenomenex C18柱(250 mm×4.6 mm,5μm);流动相为水(A)-甲醇(B)梯度洗脱,流速1.0 mL.min-1,柱温27℃,检测波长250 nm。结果葛根素在0.992～39.68μg.mL-1,大豆苷元在0.198～7.936μg.mL-1范围内,色谱峰面积与其质量浓度呈良好的线性关系(r=0.999 7)。葛根素回收率为101.3%,RSD为0.86%(n=6),大豆苷元回收率为98.0%,RSD为1.7%(n=6)。结论所建立的高效液相色谱法可作为葛根药材中葛根素和大豆苷元的质量控制标准和药材道地性选择的参考依据。     

粉防己碱脂质体药物含量及包封率的测定

目的:建立Tet脂质体药物含量测定及包封率测定的反相高效液相色谱法.方法:反相高效液相色谱法.采用Kromasil C18(250 mm×4.6 mm,5 μm);流动相:甲醇-乙腈-水-0.8%冰醋酸(30:15:55);进样量:20 μl;流速:1.0 ml/min;紫外检测波长:280 nm.采用葡聚糖凝胶G-50柱色谱法分离Tet脂质体和游离药物.结果:在本色谱条件下Tet与辅料及溶剂峰分离良好,Tet在2.0 mg/L～100.0 mg/L范围内线性关系良好(r=0.999 9,n=3),平均回收率在100.0%～101.0%之间.日内精密度RSD及日间精密度RSD均小于2%(n=5).结论:该方法准确可靠、简便易行,可用于Tet脂质体药物含量及包封率的测定.     

用高效液相色谱法测定血脉通胶囊中葛根素的含量

目的:建立血脉通胶囊中葛根素含量测定的高效液相色谱法。方法:采用Hypersil ODS-C_(18)(250mm×5.0mm,5μm)色谱柱,以甲醇-乙腈-1％醋酸溶液(18:4:78)为流动相,流速1.0ml/min,检测波长250nm,柱温室温,进样量10μl,以峰面积外标法测定。结果:浓度在2.9～28.8mg/mL范围内线性关系良好(r=0.9999),平均回收率100.27％,RSD=1.47％。结论:该法简便、准确、专属性强、重现性好,可用于血脉通胶囊中葛根素的含量测定。     

RP—HPLC测定益脑复健胶囊中葛根素的含量

目的:建立测定益脑复健胶囊中葛根素含量的高效液相色谱法.方法:采用反相高效液相色谱法,使用Hy-persil BDS C18色谱柱(4.6 mm×250 mm,5μm),流动相为甲醇-0.1%磷酸(19 ml:81 ml),流速为0.8 ml/min,检测波长为250 nm,柱温为30℃,采用外标法.结果:葛根素在0.156～0.936μg范围内线性关系良好,r=0.999 1;平均加样回收率为99.0%,RSD为0.6%(n=6).结论:本方法简便、结果准确、重现性好,可用于益脑复健胶囊的质量控制.     

高效液相色谱法测定降糖舒分散片中葛根素的含量

目的 建立高效液相色谱法测定降糖舒分散片中葛根素的含量.方法 色谱柱:Novo-PakC18柱(250 mm×3.9 11mm,4 μm);流动相为甲醇:水(25∶75),检测时波长:250 nm;柱温:30℃;流速:0.8 ml/min;理论塔板数按葛根素计算不低于2000.结果 葛根素0.0927～1.854 μg时呈良好的线性关系(r=0.9999),平均回收率为100.47%,RSD=1.11%.结论 本法简便、快捷、结果准确,可作为降糖舒分散片的质量控制标准.     

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.