植物悬浮细胞培养体系对大黄素的生物转化

目的利用植物悬浮细胞培养体系对大黄素进行生物转化生成大黄素-8-O-β-D-葡萄糖苷。方法利用4种植物悬浮细胞培养体系转化外源大黄素生成大黄素-8-O-β-D-葡萄糖苷,应用薄层色谱法进行检识。结果一叶萩、长春花和何首乌悬浮细胞培养体系均可使大黄素生物转化为大黄素-8-O-β-D-葡萄糖苷。结论首次利用植物悬浮细胞培养体系生物转化生成大黄素-8-O-β-D-葡萄糖苷。     

骆驼蓬有效成分两种给药途径的毒性比较研究

目的:开展骆驼蓬有效成分骆驼蓬碱、去氢骆驼蓬碱两种给药途径的小鼠急性毒性比较研究。方法:采用Bliss法测定小鼠经口灌胃和静脉注射给药骆驼蓬碱、去氢骆驼蓬碱的LD_(50),同时观察小鼠中毒症状及中毒反应的起止时间。结果:骆驼蓬碱经口灌胃的LD_(50)及其95%可信区间为118.9 mg/kg(105.8~133.9 mg/kg),静脉注射的LD_(50)及其95%可信区间为80.3 mg/kg(60.6~146.1 mg/kg);去氢骆驼蓬碱经口灌胃的LD_(50)及其95%可信区间为250.3 mg/kg(210.0~293.3 mg/kg),静脉注射的LD_(50)及其95%可信区间为74.1 mg/kg(67.2~83.1 mg/kg)。小鼠经口灌胃给药时,骆驼蓬碱小鼠死亡时间早于去氢骆驼蓬碱小鼠死亡时间;小鼠静脉注射给药时,去氢骆驼蓬碱小鼠死亡时间早于骆驼蓬碱小鼠死亡时间。结论:小鼠经口灌胃给药骆驼蓬碱毒性去氢骆驼蓬碱毒性,小鼠静脉注射给药去氢骆驼蓬碱毒性骆驼蓬碱毒性。     

骆驼蓬及其主要有效成分去氢骆驼蓬碱的研究进展

骆驼蓬系蒺藜科植物 ,我国西北地区拥有丰富的药材资源。其种子中的化学成分主要为咔保啉类生物碱 ,如去氢骆驼蓬碱等 ,这些成分早在 184 1年国外就有报道。此后 ,国内外学者对骆驼蓬及其生物碱的分离提取、结构鉴定、理化性质、含量测定以及药理作用等方面开展了较多的研究 ,取得了一定进展。 80年代后 ,我国学者首次报道了骆驼蓬总碱及骆驼蓬生物碱单体具有明确的抗肿瘤作用 ,使该植物及其中的有效成分受到我国学者的重视。去氢骆驼蓬碱是其中的主要有效成分之一 ,它在骆驼蓬种子中的含量高、结构稳定且具有肯定的抗肿瘤作用。因此 ,本文…     

骆驼蓬种子中去氢骆驼蓬碱和骆驼蓬碱的提取工艺研究

目的：探讨骆驼蓬种子中去氢骆驼蓬碱和骆驼蓬碱的提取工艺。方法：采用第一煎先用一定ｐＨ值的酸水,继以一定ｐＨ值的碱水提取,以两种生物碱的提取率为指标,按正交试验设计,分别以荧分光光度法和差示分光光度法定量,考察了ｐＨ、浸泡时间和加热时间对提取率的影响。结果：第一煎用ｐＨ２或ｐＨ４的酸水溶液浸泡４０ｍｉｎ,煎６０ｍｉｎ,第二煎用ｐＨ１０的碱水溶液浸泡２０ｍｉｎ,煎６０ｍｉｎ。结论：此法提取简便、经济,可作为制备中药口服制剂的方法之一。     

骆驼蓬总生物碱和去氢骆驼蓬碱对胃Hp的敏感性研究

胃幽门螺杆菌 (Hp)感染是慢性胃炎和消化道溃疡的重要致病因素 ,针对 Hp感染的治疗已经成为临床治疗消化系统疾病的重要途径之一。骆驼蓬为多年生野生植物 ,容易提纯加工制作成中药 ,广泛用于肠道感染 ,且可用于治疗消化道溃疡 [1 ]。本文研究骆驼蓬总生物碱和去氢骆驼蓬碱对 2 7株临床分离的幽门螺杆菌的体外抗菌作用 ,以期为临床应用骆驼蓬及其活性成分治疗消化道感染提供依据。1　材料与方法1.1　材料　骆驼蓬总生物碱、去氢骆驼蓬碱均由新疆医科大学药学院药剂学教研室提供。试验菌 :由新疆医科大学第一附属医院消化科提供病人胃或十二…     

高效液相色谱法和薄层层析法鉴别骆驼蓬与骆驼蒿

目的：建立骆驼蓬与骆驼蒿的鉴别方法。方法：采用高效液相色谱法（HPLC）和薄层层析法（TLC）鉴别骆驼蓬和骆驼蒿。结果：HHPLC法和TLC法实验结果均说明骆驼蓬的根中不含骆驼蓬碱（HAL），而骆驼蒿的根中含有较多的HAL；骆驼蓬种子中的去氢骆驼蓬碱（HAR）含量高于HAL的含量，而骆驼蒿种子中的HLA含量高于HAR的含量。结论：HPLC法和TLC法可用于鉴别骆驼蓬和骆驼蒿。     

多裂骆驼蓬化学成分研究 Ⅰ.种子生物碱类成分及其抗肿瘤活性

首次从我国特有植物多裂骆驼蓬种子总生物碱中分离得到了９个化合物，鉴定了７个，其中６个为生物碱，分别为去氢骆驼蓬碱（Ⅰ），哈尔醇（Ⅱ），哈梅林（Ⅲ），鸭嘴花碱（Ⅳ），鸭嘴花酮碱（Ⅴ），脱氧鸭嘴花酮碱（Ⅵ），另一个化合物为苯甲酸（Ⅶ）。并对主成分Ⅰ进行了Ｋ５６２人白血病细胞生长抑制作用的体外细胞毒研究，结果表明去氢骆驼蓬碱对Ｋ５６２白血病细胞有明显的抑制和杀灭作用，活性指数超过环磷酰胺。     

中药骆驼蓬生物碱提取及抗包虫化学成份研究

骆驼蓬具有镇咳，抗风湿等作用，近年报道又有抗肿瘤，治疗包虫病的作用，为进一步阐明药物作用机理。提高药物的疗效，降低毒副作用，我们对该植物的种子用化学方法进行了生物碱提取，分离，并经ＭＰ测定，薄层层析，ＵＶ，ＩＲ，ＭＳ，ＮＭＲ光谱分析，分离，鉴别出了其中含量较高的两个单体：分别确定为骆驼蓬碱和去氢骆驼蓬三，并据测得的一些化学和光谱数据，初步推测出了此类抗包虫有效成份的化学结构。     

去氢骆驼蓬碱体外杀菌作用的研究

目的：研究去氢骆驼蓬碱在体外的杀菌作用。方珐：采用试管法检测去氢骆驼蓬碱对金黄色葡萄球菌、乙型溶血性链球菌、绿脓杆菌、大肠杆菌、伤寒沙门菌、福氏志贺菌和白色念珠菌的最小杀菌浓度(MBC)及对金黄色葡萄球菌、绿脓杆菌、白色念珠菌的时间-杀菌曲线。结果：去氢骆驼蓬碱对6种细菌的MBC为125～250μg／ml，对白色念珠菌的MBC为800μg／ml。杀菌曲线表明，其可分别在6h和24h内完全杀死10^6 cfu／ml的绿脓杆菌和金黄色葡萄球菌。结论：去氢骆驼蓬碱在体外对多种细菌和真菌具有较强的杀菌作用。     

去氢骆驼蓬碱软膏对小鼠上皮细胞有丝分裂及表皮角化的影响

目的：了解去氢骆驼蓬碱软膏对雌激素周期小鼠阴道皮皮模型及鼠尾鳞片表达模型的作用,为开发新的治疗银屑病药物提供初步的实验依据。方法：制备雌激素周期小鼠阴道上皮模型及鼠尾鳞片表皮模型,用光学显微镜观察分析基底细胞中有发裂数及颗粒鳞片数。结果：与对照组相比,去氢骆驼蓬碱软膏对两个实验模型的作用均存在显著差异（Ｐ〈０．０１）。结论：去氢骆驼蓬碱软膏能抑制增殖活跃的上皮细胞并促使表皮角化安全,起到治疗银现的     

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.     

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     

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.     

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…     

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.     

Possible Spread of adenovirus type 3 from poultry to humans ：indirect evidence from an outbreak in China

Objective:To explore the epidemiology and etiology for an outbreak of acute respiratory tract infection that occurred in one county of Jiangsu Province, China 2004. Methods: Only cases meeting the case definition were included in the study. We reviewed the medical records of the cases who were admitted to the local hospitals, interviewed cases by a standard questionnaire, and then described the epidemiotogic features and analyzed risk factors by means of a case-control study. We collected pharyngeal swab specimens and sent them to different laboratories for isolation and culture. The laboratory used different detection methods such as DIP, PCR, electron microscope examination and microneutralization assay, to identify and then type the positive specimens. Results:A total of 871 cases were reported during the period from April 18 to July 4,2004. The distribution of onset times presented two peaks, one in late May and another in middle June. The epidemic occurred mainly in the elementary and junior high schools in ten townships of one county, and the mean age of the cases was 12 years (range 7 months to 18 years). The course of the disease was acute, and was characterized by fever accompanied with sore throat and tonsillitis. The WBC count of cases was normal or elevated. The mean duration of illness was 5 days (range 2 to 12 days). No fatalities from illness were reported. A case-control study indicated that the possible risk factors were close contact with a case and/or poultry before onset and sharing of towels among members of the family. The typical CPE was observed through inoculating pharyngeal swab specimens into the HEP-2 cell cultures in different laboratories. An infection of adenovirus type 3 was verified by detecting positive specimens in different methods. Conclusion:This investigation demonstrated that the acute respiratory infection in cases was caused by adenovirus type 3. Cases occurred in over 70 schools in ten townships in 2004, and the route of transmission was possibly close contact with cases or droplet transmission.