美丽红豆杉种子化学成分的研究(Ⅲ)

目的研究美丽红豆杉Taxus mairei种子的化学成分。方法采用柱色谱、制备TLC、制备HPLC法和光谱法分离鉴定化学成分。结果从美丽红豆杉种子中分离得到6个紫杉烷类化合物，鉴定为13α—acetylbrevifoliol（Ⅰ）、taxayuntin E（Ⅱ）、acetyltaxinine B（Ⅲ）、5-epi—canadensene（Ⅳ）、2α，9α，10β，13-tetraacetoxy-20-cinnamoyloxy-taxa-4（5），11（12）-diene（Ⅴ）、taxachitrienes B（Ⅵ）。结论它们均为首次从该植物种子中获得。     

川产云南红豆杉中紫杉烷类似物△

从四川省木里县采集的云南红豆杉 Ｔａｘｕｓ ｙｕｎｎａｎｅｎｓｉｓ的树皮中分得 ３个紫杉烷类似物，经解析其~（１）Ｈ，~（１３）ＣＮＭＲ、ＥＩＦＡＢ ＭＳ谱及ＤＥＰＴ实验证明此３个类似物为１－β－ｈｖｄｒｏｘｙ－ｂａｃｃａｔｉｎＩ（Ｉ）、 １０－ｄｅａｃｅｔｙｌｔａｘｏｌ（Ⅱ）、 ７， ９－ｄｉｄｅａｃｅｔｙｌｂａｃｃａｔｉｎ Ⅵ（ Ⅲ）。此 ３个化合物存在于红豆杉属的其它植物中，但首次从云南红豆杉中分出。     

2,2—二甲基—4—环己烯—1,3—二酮的合成

美丽红豆杉素B(Taxamairin B,I)是从美丽红豆杉茎皮中分离获得的化学成分之一,对肝癌细胞有一定的抑制作用。我们曾报道了(C环部分的中间体3-异丙基-4,5-二甲氧基苯乙酮缩酮的合成。2,2-二甲基-4-环己烯-1,3-二酮(Ⅱ)是全合成美丽红豆杉素B的中间体之一。Hart在研究6,6-二甲基-4,5-环氧-2-环己烯酮的光     

南方红豆杉繁殖技术研究进展

南方红豆杉Taxus chinensis var．mairei fLemee et level．）Chang et L．K．Fu又称美丽红豆杉。为国家一级保护植物．是红豆杉属中在中国分布最广、     

川产云南红豆杉紫杉烷类似物

从四川省木里县采集的云南红豆杉Ｔａｘｕｓｙｕｎｎａｎｅｓｎｉｓ的树皮中分得３个紫杉烷类似物,经解析其＾１Ｈ,＾１３ＣＮＭＲ,ＥＩＦＡＢＭＳ谱及ＤＥＰＴ实验证明此３个类似物为１－β－ｈｙｄｒｏｘｙ－ｂａｃｃａｔｉｎⅠ（Ⅰ）、１０－ｄｅａｃｅｔｙｌａｔａｏｌ（Ⅱ）、７,９－ｄｉｇｅａｃｅｔｙｌｂａｃｃａｔｉｎⅥ（Ⅲ）。此３个化合物存在于红豆杉属的其它植物中,但首次从云南红豆杉中分出。     

东亚和北美产红豆杉属七种植物中紫杉醇及短叶醇的含量

应用高效液相色谱分析了东亚产四种红豆杉和北美产三种红豆杉的紫杉醇和短叶醇含量。结果表明，短叶红豆杉树皮中紫杉醇含量最高，其次为中间红豆杉树皮；东亚产四种红豆杉枝叶中，云南红豆杉枝叶中紫杉醇含量较高，东北红豆杉和美丽红豆杉次之；短听醇含量则以短叶红豆杉针叶最高，东北红豆杉及云南红豆杉次之。     

东亚和北美产红豆杉属七种植物中紫杉醇及短叶醇的含量

应用高效液相色谱分析了东亚产四种红豆杉和北美产三种红豆杉的紫杉醇和短叶醇含量。结果表明，短叶红豆杉树皮中紫杉醇含量最高，其次为中间红豆杉树皮；东亚产四种红豆杉枝叶中，云南红豆杉枝叶中紫杉醇含量较高，东北红豆杉和美丽红豆杉次之；短叶醇含量则以短叶红豆杉针叶最高，东北红豆杉及云南红豆杉次之。     

滇白珠化学成分及其生物活性的研究

滇白珠化学成分及其生物活性的研究张治针△王弘郑玉果李长龄果德安郑俊华（北京医科大学生药学生物技术研究室，北京１０００８３）我们首次对滇白珠Ｇａｕｌｔｈｅｒｉａｙｕｎｎａｎｅｎｓｉｓ（Ｆｒａｎｃｈ．）Ｒｅｈｄ．的根进行了系统的化学成分研究，用现代色谱技...     

酸枣仁中的一种新羽扇豆烷型三萜

目的研究美丽红豆杉T axusm a irei种子的化学成分。方法采用柱色谱、制备TLC、制备HPLC法和光谱法分离鉴定化学成分。结果从美丽红豆杉种子中分离得到6个紫杉烷类化合物,鉴定为13-αacety lbrev ifo lio l(Ⅰ)、taxayun tin E(Ⅱ)、acety ltax in ine B(Ⅲ)、5-ep i-canadensene(Ⅳ)、2,α9,α10,β13-tetraacetoxy-20-c innam oy loxy-taxa-4(5),11(12)-d iene(Ⅴ)、taxach itrienes B(Ⅵ)。结论它们均为首次从该植物种子中获得。     

美丽红豆杉化学成分的研究

从美丽红豆杉Ｔａｘｕｓ ｍａｉｒｅｉ Ｌｅｍｅｅ ｅｔ Ｌｅｖｌ Ｓ．Ｙ．Ｈｕ树皮的甲醇提取物中分得６个紫杉烷二萜类化合物，根据理化性质和光谱分析分别鉴定为ｔａｘｕｍａｉｒｏｌ Ｂ（Ⅰ），７，２‘－二去乙酰氧基－ａｕｓｔｒｏｐｉｃａｔｉｎｅ（Ⅱ），ｔａｘｉｎｅ Ⅱ、ｔａｘｉｎｉｎｅ Ａ（Ⅳ）、ｔａｘｉｎｉｎｅ Ｍ（Ⅴ）和ｔａｘｅｚｏｐｉｄｉｎｅＧ（Ⅵ）。除Ⅰ以外，其余５个化合物均是首次从该植物中分     

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.     

Development on Adjustable Calibration Marker for Shock Wave Focus

Shock wave lithotripsy （SWL） is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it＇s difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.     

Study on the TCM Pathogenesis of Angiopathic Complications of Type II Diabetes

Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.     

Leptin, Ghrelin and TNF-α before and after Hypo-caloric Traditional Chinese Diet and Auricular Acupuncture

INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5     

Relationship between Dysglycemia and Carotid Atherosclerosis in Tibetan Population

People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

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.