贵州遵义山银花药材高效液相色谱指纹图谱研究

目的建立山银花药材高效液相色谱(HPLC)特征指纹图谱,用于产地、品质控制。方法采用HPLC法对5批基地及8批不同产地山银花药材和3批金银花药材进行指纹图谱比较分析。结果建立了HPLC指纹图谱共有模式,12个共有峰被标定,并对其他产地药材进行了相似度比较;基地和不同产地山银花药材的主成分组成基本相同,但各组分的含量有较大的差异。结论该方法可作为山银花药材鉴别及品质控制的方法,为山银花药材品质评价和规范化种植、标准操作规程的制定及质量监控提供了科学的依据。     

不同产地浙贝母药材HPLC-ELSD指纹图谱的研究

[目的]建立不同产地浙贝母药材HPLC-ELSD指纹图谱,为科学评价和有效控制其质量提供可靠方法。[方法]采用HPLC-ELSD测定21个不同产地的浙贝母药材样品,建立指纹图谱共有模式图,并通过指纹图谱相似度计算、指纹图谱聚类分析、指纹图谱主成分分析,对不同产地浙贝母药材进行区分研究。[结果]建立了浙贝母药材指纹图谱共有模式图,包含9个共有特征峰。以共有模式对21个不同产地的药材进行指纹图谱相似度评价,浙江缙云溪丘、永康、江苏南通浙贝相似度最低(0.8),浙江磐安地区浙贝相似度最高(0.9)。指纹图谱聚类分析、主成分分析,将不同产地样品分为3类。[结论]浙贝母药材的指纹图谱分析可以为其质量评价提供一定的理论基础。     

金银花与山银花HPLC指纹图谱比较研究

目的 通过建立HPLC指纹图谱,对金银花与山银花的化学成分进行比较研究.方法 Kromasil C18色谱柱(4.6 mm×250 mm;5μm),乙腈-0.4%的磷酸水溶液梯度洗脱,检测波长:238 nm,柱温:30 ℃,流速:1 mL/min.结果 建立了金银花与山银花的高效液相指纹图谱,发现成分的相对含量有明显差异.结论 利用HPLC指纹图谱可较全面的反映金银花与山银花间的差异.     

罗布麻叶HPLC指纹图谱的研究

目的建立罗布麻叶HPLC指纹图谱分析方法,评价不同产地罗布麻叶药材的质量。方法用HPLC技术对不同产地罗布麻叶进行分析,测定其指纹图谱,并作模糊聚类法分析和相似度评价。结果初步建立了以10个共有峰为特征指纹信息的HPLC指纹图谱;发现少数产地罗布麻叶HPLC指纹图谱有一定差异。结论方法准确可靠,重现性好,可作为罗布麻叶内在质量评价的依据。     

宁夏枸杞黄酮类化合物HPLC指纹图谱研究

目的 建立宁夏枸杞黄酮类化合物高效液相色谱指纹图谱,为鉴别不同来源的宁夏枸杞提供依据.方法 以10个宁夏不同产地的宁夏枸杞主栽品种"宁杞Ⅰ号"样品建立枸杞黄酮类化合物指纹图谱共有模式,采用"中药色谱指纹图谱相似度评价系统"软件进行数据处理,对15个不同来源的枸杞样品进行了分析.结果 本研究建立的方法 重现性较好;16个特征峰构成了宁夏枸杞黄酮类化合物色谱指纹图谱的特征;不同产地、不同品种的枸杞样品黄酮类化合物组成与量存在差异.结论 所建立的枸杞黄酮类化合物的HPLC指纹图谱对不同产地、不同品种枸杞的鉴别具有参考价值.     

岗松油的气相色谱指纹图谱研究

目的建立岗松油化学成分指纹图谱的研究方法,以鉴别岗松油的质量。方法采用气相色谱法测定,对不同产地和采收期的岗松油的指纹图谱进行研究。结果建立了岗松油指纹图谱,确定12个色谱峰为共有峰。结论不同产地和采收期岗松油的指纹图谱稳定性好,相似性高,具有特征性和唯一性,利用岗松油指纹图谱可以对岗松油的质量进行控制。     

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。     

基于表告依春含量及HPLC指纹图谱检测的不同产地板蓝根药材质量评价

目的:评价不同产地板蓝根药材的质量差异。方法:采用HpLC法对20批不同产地板蓝根药材建立化学指纹图谱并测定表告依春含量;以指纹图谱相似度和表告依春含量为指标,运用SPSS软件进行聚类分析。结果:建立的指纹图谱精密度、重复性、稳定性好,不同产地样品指纹图谱相似度范围为0.851～0.991,表告依春的质量分数为0.005%～0.068%;聚类分析结果表明,不同产地板蓝根的表告依春含量及化学指纹图谱不尽相同,化学成分差异与产地有一定相关性,同一产区板蓝根化学质量相对稳定,但也有个别存在较大质量差异。结论:综合化学指纹图谱分析及表告依春含量检测的方法,能从定性和定量两方面反映药材的化学成分信息,可为板蓝根药材质量控制与评价提供参考。     

不同产地垂盆草HPLC指纹图谱研究

目的:建立垂盆草的HPLC指纹图谱,对比不同产地垂盆草的差异,为垂盆草质量控制提供参考。方法:采用Welchrom C_(18)色谱柱(4.6 mm×250 mm,5μm),以0.1%乙酸水-乙腈为流动相进行梯度洗脱,流速为1.0 mL/min,柱温40℃,检测波长360 nm,建立垂盆草HPLC指纹图谱,采用相似度软件对指纹图谱进行分析,通过聚类分析和主成分分析,评价不同产地垂盆草的差异。结果:建立垂盆草特征指纹图谱,共确定7个共有峰,同产地样品相似度均在0.90以上,而不同产地之间相似度均小于0.9;聚类分析和主成分分析结果显示:四川产的4批垂盆草成分之间差异最小,而安徽产的3批垂盆草成分之间差异较大。结论:所建立的垂盆草HPLC特征指纹图谱方法简单,分离效果较好,可用于垂盆草的质量控制,为其相关研究提供指导;并且不同产地垂盆草化学成分差异较大。     

不同产地乌药的HPLC指纹图谱研究

目的 采用已建立的乌药HPLC指纹图谱检测方法,对不同产地乌药进行鉴别研究。方法 以Symmetry C₁₈（150 mm×4.6 mm,5 μm）为色谱柱,乙腈-水为流动相进行梯度洗脱,在235 nm波长下以乌药醚内酯为参照物测定了6个不同产地乌药的指纹图谱。按照乌药HPLC指纹图谱共有模式,标定6个共有指纹峰,并对不同产地乌药指纹图谱进行相似度比较。结果 台乌药和其他5个产地乌药的指纹图谱,存在显著的差异。同时也对该指纹图谱检测方法进行了验证。结论 通过HPLC指纹图谱方法,能够明显区别台乌药与其他产区的乌药,该方法可作为台乌药真伪鉴别的有效方法。     

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.