草珊瑚的HPLC指纹图谱研究

目的 建立草珊瑚的HPLC指纹图谱并对其进行化学模式识别。方法 采用HPLC法对19批草珊瑚药材进行指纹图谱构建,运用指纹图谱参数共有峰、n强峰和相似度进行分析,并对图谱进行聚类分析和主成分分析。结果 建立了草珊瑚的HPLC指纹图谱,得到了13个共有峰,建立了8强峰,相似度在0.82～0.98,19批药材聚成4类。结论 草珊瑚的HPLC指纹图谱的构建和化学模式的识别为药材质量控制提供更全面的参考。     

大黄药材HPLC指纹图谱的化学模式识别

目的通过指纹图谱的相似度比较和化学模式识别,确定TY719注射液原料大黄的产地,并建立指纹图谱共有模式。方法应用中南大学梁逸曾教授的中药指纹图谱相似度计算软件,对不同产地的掌叶大黄药材的HPLC指纹图谱进行相似度比较和主成分分析。结果有4个样品有明显的差异性,主成分分析进一步证明了相似度比较的结果。而后对同一产地多批药材进行相似度比较和主成分分析,确立了大黄指纹图谱共有模式的方法,筛选出建立指纹图谱共有模式的10批大黄的药材。结论该方法简便,灵敏,可操作性强,为控制TY719注射液原料药材质量提供了有效的手段。可作为TY719注射液质量控制标准的判断方法。      

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。     

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。     

HPLC指纹图谱联合化学计量学在不同产地云木香药材鉴别中的应用

目的 应用高效液相色谱法检测云木香药材指纹图谱, 采用多种化学计量学方法分析, 以鉴别不同产地云木香药材.方法 采用反相高效液相色谱法, 乙腈-水为流动相梯度程序洗脱, 流速1.0 m L/min, 检测波长254 nm, 检测云木香药材的HPLC图谱;结合相似度计算、系统聚类分析、主成分分析等方法分析指纹图谱, 对不同产地云木香进行鉴别.结果 该方法可使云木香中各成分得到较好的分离;根据检测结果确定了18个共有指纹峰, 建立了云木香药材指纹图谱的共有模式, 15个不同来源的云木香有一定相似度;但不同产地云木香药材样品的指纹图谱通过化学计量学分析, 发现存在较大差异.结论 该HPLC指纹图谱重复性好, 特异性高.HPLC指纹图谱联合化学计量学可鉴别不同产地云木香药材, 为云木香药材质量控制提供依据, 并为云木香药材资源合理开发利用提供参考.     

川产麦冬野生资源HPLC指纹图谱及化学模式识别研究

目的 建立川产麦冬野生资源的化学模式识别方法。方法 采用高效液相色谱法,建立川产麦冬野生资源的HPLC指纹图谱,使用SPSS17.0软件对26批不同来源川产麦冬样品的HPLC指纹图谱进行主成分分析,在主成分得分系数矩阵的基础上,对其进行系统聚类分析;并使用相似度评价软件进行相似度评价验证。结果 26批麦冬样品共提取出4个主成分,被分为4大类;与共有峰直接聚类相比,主成分-聚类分析更符合相似度评价结果。结论 利用SPSS软件对麦冬HPLC指纹图谱进行主成分-聚类分析,所建立的模式识别方法,操作简便,统计结果具有可靠性,可对麦冬化学计量学分类及其质量评价提供有效参考。     

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。     

水黄花药材高效液相色谱指纹图谱及模式识别

目的：研究水黄花药材高效液相色谱（high performance liquid chromatography,HPLC）指纹图谱及模式识别方法。方法：采用HPLC,以贵州不同产地、不同采收期的水黄花药材为对象,对15批药材进行指纹图谱研究,运用聚类分析对指纹图谱进行模式识别研究。结果：15批样品中有13个共有峰,15批药材相似度较高,色谱峰强度不同是药材的主要差别。通过聚类分析将15批样品按采收期不同分为2类。结论：该方法能很好分离水黄花的各类成分,HPLC指纹图谱具有良好的稳定性、重复性,可用于水黄花药材的质量控制。     

独活药材香豆素类成分的高效液相色谱指纹图谱研究

目的 建立独活中香豆素类成分的高效液相色谱指纹图谱分析方法,为独活药材的质量控制提供依据。方法 采用C18 色谱柱（4.6 mm × 250 mm, 5 μm）,以水-甲醇为流动相进行梯度洗脱,流速1.2 mL/min,柱温25 ℃,检测波长330 nm。结果 建立了独活药材香豆素类成分的高效液相色谱特征指纹图,标定了15个共有色谱峰,采用相似度评价、聚类分析、主成分分析对所收集的15批样品进行指纹图谱模式识别研究,对6个共有峰借助对照品进行了指认,采用高效液相色谱-电喷雾离子源-质谱技术并结合文献报道对其余9个共有峰进行了初步归属。15批独活药材的相似度结果为0.797～0.979。运用聚类分析,15批独活药材可大致聚成5类。结论 该法所建立的独活药材香豆素类成分指纹图谱特征性强,为该药材的质量控制提供了实验依据。     

基于HPLC指纹图谱多软件分析的山西远志药材质量均一性评价

目的建立山西远志药材高效液相色谱指纹图谱的分析方法,为有效控制远志药材的质量奠定基础。方法采用RP-HPLC法,色谱柱为Hypersil C18柱(4.6 mm×250 mm,5μm),乙腈-0.05%磷酸水梯度洗脱,检测波长为318 nm,流速为1.0 ml/min,分析时间为80 min,分析10批山西远志药材的HPLC指纹图谱,并采用"中药色谱指纹图谱相似度评价软件"、SPSS软件和SIMCA软件进行相似度分析、聚类分析和主成分分析。结果方法学考察实验表明所建立的指纹图谱方法稳定性、精密度和重现性均良好。山西不同来源的远志药材相似度大于0.8,聚类分析和主成分分析结果一致。结论山西远志药材的化学组成一致性较好,质量稳定。所建立的远志药材指纹图谱方法灵敏、稳定,可操作性强。     

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.