均匀纺锤形α-Fe2O3的制备及其等电性研究

以硝酸铁为原料，尿素为均匀沉淀剂，磷酸二氢钠为结晶助剂，用动态开放回流系统的均匀沉淀法制备了纺锤形α-Fe2O3粒子。并用XRD、TEM等进行了表征。当Fe(NO3)3、NaH2PO4、CO(NH2)2的浓度分别为0．20、0．0015、0．10mol／L，反应温度为117℃，陈化时间为13h时，制备的粒子轴比可达3．3，且分散性较好，粒径分布窄，陈化时间短，产率较高。对反应机理、结晶助剂NaH2PO4的作用等作了初步研究。并测量了不同pH值时粒子的Zeta电位值，找出了粒子的等电点，与理论估算值接近。     

培养基成分对云南红豆杉细胞生长和产生1-去乙酰巴卡亭Ⅲ的影响

目的 研究B5培养基主要成分对云南红豆杉Taxus yunnanensis细胞生长和产生10-去乙酰巴卡亭Ⅲ的影响。方法 利用植物组织培养技术结合HPLC分析手段，通过改变B5培养基中CaCl2、NaH2PO4、(NH4) 2SO4和KNO3的质量浓度，研究其对云南红豆杉细胞生长及10-去乙酰巴卡亭Ⅲ量的影响。结果 试验组与对照品相比，B5培养基中高质量浓度的NaH2PO4能够显著促进云南红豆杉细胞生长，CaCl2、(NH4)2SO4和KNO3浓度对细胞生长无显著影响；B5培养基中低质量浓度的CaCl2、NaH2PO4、(NH4)2SO4和KNO3能够显著促进10-去乙酰巴卡亭Ⅲ合成与释放。结论B5培养基中NaH2PO4为300 mg/L时，能够显著促进云南红豆杉细胞生长，细胞生长量是对照的1.2倍，CaCl2、(NH4)2SO4和KNO3分别在75～300、134～268和2 500～5 000 mg/L对细胞生长无显著影响；B5培养基中CaCl2、NaH2PO4、(NH4)2SO4和KNO3的质量浓度分别为75、75、3.5、625 mg/L时，能够显著促进细胞中10-去乙酰巴卡亭Ⅲ合成与释放，10-去乙酰巴卡亭Ⅲ的量分别是对照的1.5、1.4、2.4倍。     

高效液相色谱法测定利肤康乐洗剂中盐酸小檗碱含量

报道了用反向高效液相色谱测定黄连、黄柏和利肤康乐洗剂中盐酸小檗碱的含量，采用的色谱柱为Ultrasphere BDS，以乙腈-0．05M NaH2PO4溶液-二甲胺(37：63：0．2)为流动相，检测波长为346nm。本方法的回收率为98．83％，RSD为0．94％。     

盐浓度对人血清碱性磷酸酶活性的影响

①目的　观察盐浓度对人血清碱性磷酸酶 (HSAP)活性的影响。②方法　应用磷酸苯二钠法分别测定不同浓度的NaCl,NaH2 PO4及MgCl2 存在下的HSAP活性。③结果　NaCl浓度小于 0 .4mol/L时HSAP活性降低 ,大于 0 .4mol/L时对其活性无影响 ;NaH2 PO4浓度在 1.0mol/L之内使HSAP活性增加 ;而MgCl2 浓度小于0 .4mol/L时使HSAP活性增加 ,大于 0 .4mol/L其活性降低。④结论　低浓度的NaCl对HSAP有抑制作用 ;NaH2 PO4对HSAP有激活作用 ;低浓度的MgCl2 对HSAP有激活作用 ,高浓度的MgCl2 对HSAP有抑制作用。     

医用羟基磷灰石纳米粒的制备和特性:羟基磷灰石纳米粒的纳米结构及纳米尺寸效应

目的 制备医用羟基磷灰石（HA）纳米粒并观测其纳米结构及纳米尺寸效应；方法 采用常态表面活性剂（水包油）制备HA纳米粒，用电子显微镜、X射线仪、核磁共振仪、分光光度计和傅里叶变换红外光谱仪等对HA纳米粒进行观测。结果 HA纳米粒的平均尺寸为。10-30nm；共振分析表明，磷至少以2种类型存在；在200nm波长处，光谱包含六面体Ca^2＋典型的光谱带；HA纳米粒微晶的Eg值分别为1．60和1．64ev；傅里叶变换红外光谱中包含2种振波；在956．5、1026．1和1．108．7cm光带处的3种PO4^3-曲态分别为v1（PO4）、v3（PO4）、v3（PO4）。在565．2 and 600．0cm光带处的2种PO4^3-曲态为v4（PO4）。结论 纳米尺寸产生的从纳米粒到微晶的边缘能量增加伴随着簇晶体积的下降和Ca^2＋周围配基的变化。这些变化与量子尺寸效应有关。     

纳米明胶粒子的制备及其表面改性

用改进的二次单凝聚法制备了粒径在100nm左右的纳米明胶粒子，并考察了凝聚剂用量，pH值，胶凝时间和固化时间等因素的影响。得到最佳的工艺条件为：凝聚剂的体积分数为0．444，pH值为3．8，胶凝时间为10min，固化时间为25min。通过吸附聚对苯乙烯磺酸钠(PSS)，对明胶粒子进行表面改性，使其表面带有负电荷，用反滴定的方法测得最大吸附量为每克明胶粒子吸附8．23mg PSS，为后期在表面吸附带有正电荷的药物打下了基础。     

常见无机盐对aPTT、PT、TT测定的影响

目的探讨常用无机盐对活化部分凝血酶时间（aPTT）、凝血酶原时间（PT）和凝血酶时间（TT）的影响。方法以不同浓度的NaCl、KCl、NaHCO3、NaH2PO4为样品测定aPTT、PT和TT。结果四种无机盐能够明显延长aPTT、PT、TT时间,呈现出体外抗凝作用,作用强度与浓度呈正相关。四种盐抗凝能力强弱如下：NaH2PO4＞NaHCO3＞NaCl＞KCl。结论无机盐会参与到凝血过程,对aPTT、PT和TT产生影响,如果样品中含有无机盐,应考虑到其影响。     

丙烯直接环氧化Au/TiO2催化剂助剂对催化性能的影响

采用沉积沉淀法制备了一系列的Au／TiO2催化剂，分别考察了碱金属氯化物以及贵金属等助剂对Au／TiO2催化丙烯环氧化性能的影响。结果表明：催化剂中加入NaCl后其环氧化催化性能明显提高，含量为1．5％时环氧丙烷(PO)得率最高；而加入CsCl和贵金属Pt则有利于提高丙烯环氧化过程中氢气的利用效率，抑制了副产物水生成。     

PEO与Li1.3Al0.3Ti1.7(PO4)3络合的离子导体聚合物电解质

将实验室经固相反应的精细Li1．3Al0．3Ti1．7(PO4)3盐与聚氧化乙烯(PEO)按照不同，nEO／nLi摩尔比，通过溶液浇铸法制备了固态聚合物电解质。红外光谱分析表明Li1．3Al0．3Ti1．7(PO4)3盐与PEO之间有络合产生。SEM照片显示PEO晶体外层为无定形相所包覆形成的胞状结构。经电化学阻抗(简称EIS)法测试发现聚合物电解质膜的室温阻抗谱图是由高频处一压缩的半圆和低频下一条直线组成，而高温时的阻抗谱主要为一条直线。离子电导率的测试结果得到：当nEO／nLi=16时，聚合物电解质室温下电导率约为10^-6／cm，343K时达到10^-4s／cm。离子迁移率的数据表明聚合物电解质为离子和电子共混的导体，但在聚合物电解质体系中电荷的迁移主要是由离子作为载流子导电造成的，由测试结果可得此电解质为离子导体。     

HPLC测定去羧氯雷他定片的含量

目的：建立去羧氯雷他定片的含量测定方法，为药品质量控制提供依据。方法：采用反相高效液相色谱法，Dikma ODS C18色谱柱，流动相为乙腈-磷酸盐缓冲液(50mmol／L NaH2PO4溶液，磷酸调节至pH3．0)(33：67)，流速lmL／min，检测波长为275nm。结果：片剂分析测定无干扰，去羧氯雷他定在5．01-40．06μg／ml范围内线性关系好，平均回收率99．67％：重复性实验的CV为0．82％；日间精密度CV为0．84％。结论：此法专属性强，结果准确，重现性好，适用于去羧氯雷他定片的含量测定。     

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.     

CLINICAL SIGNIFICANCE OF SERUM CYTOKINES IL-1β,sIL-2R,IL-6,TNF-α,AND IFN-v IN ACUTE CORONARY SYNDROME

Objectives To explore serum cytokines levels (including IL-1 β, sIL-2R, IL-6, TNF-α, and IFN-v) and their significance in patients with acute coronary syndrome (ACS) and the subsequent follow-ups, with attempt to estimate the role of various serum inflammatory markers in the diagnosis and assessment of ACS.Methods The study population include 40 patients with acute myocardial infarction (AMI), 40 patients with unstable angina pectoris (UAP), and 40 controls. Among the 80 patients, 60 patients attended a follow up 4 months later. Serum inflammatory markers including IL-1 β, sIL-2R, IL-6, TNF-α, and IFN-v were measured by enzyme linked immunosorbent assay.Results Serum IL- 1 β, sIL-2R, IL-6, TNF-α were significantly higher in AMI group or UAP group compared to the control group and became significantly lower 4 months later in the follow-up patients. Serum levels of IFN-v shows no significant difference between AMI group or UAP group and controls, also showing no significant change when measured in follow up patients. There was no correlation between serum creatine kinase-MB isoenzyme levels and serum inflammatory markers either in UAP or AMI group. Furthermore, when divided into two subgroups using Wagner's QRS scoring system in the AMI group, there is no difference of each serum inflammatory marker between ≤ 6 scores group and ＞ 6 scores group.Conclusion Serum levels of certain inflammatory markers may have some diagnostic value for ACS, and can be a useful marker reflecting disease stability.