罗布麻叶顶空气相色谱—质谱指纹图谱的研究

【目的】建立罗布麻叶挥发性成分顶空气相色谱—质谱(HSGC-MS)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】采用HSGC-MS联用技术对不同产地罗布麻叶的挥发性成分进行分析,测定其指纹图谱,确定共有指纹峰,并作模糊聚类分析和相似度评价。【结果】罗布麻叶挥发性成分中含有14个特征性指标成分,初步建立了以此14个共有峰为特征指纹信息的HSGC-MS指纹图谱。【结论】本方法准确可靠,重复性好,可作为罗布麻叶质量评价的依据。     

不同产地不同品种藁本挥发性成分研究

目的：进行不同产地不同品种藁本药材挥发性成分研究。方法：采用水蒸汽蒸馏提取,应用GC-MS联用技术对藁本药材挥发油化学成分进行分离分析。结果：通过GC-MS联用技术数据检索与相关文献鉴定出29个成分,12批不同产地不同品种藁本药材挥发油化学成分主要含有的烯丙基苯类衍生物和苯酞类衍生物是相同的。结论：该方法可用于藁本药材质量评价。     

10种产地小茴香果实挥发油成分分析

目的 分析10种不同产地小茴香果实挥发油成分, 并检测其成分相对含量.方法 选用固相微萃取法萃取10种小茴香果实中的挥发油, 通过气相色谱-质谱联用对小茴香果实中挥发油成分进行分析.结果 从10种不同产地小茴香果实挥发油中鉴定出化学成分68个, 其中共有相同成分9个、不同成分59个.主要成分都是反式茴香脑、胡椒酚甲醚、4-甲氧基-苯甲醛, 占总成分的80%以上.结论 不同产地小茴香果实挥发油化学成分差异较大, 为小茴香的合理开发利用提供依据.     

地桃花茎和叶挥发性成分GC-MS分析

[目的]分析地桃花茎和叶的挥发性化学成分。[方法]采用二氧化碳超临界萃取法从地桃花的茎和叶中提取挥发油,对得到的挥发油用气相色谱-质谱法进行分析鉴定,以面积归一化法确定其中挥发性成分相对含量。[结果]从地桃花的茎和叶挥发油中分别分离出18个和23个色谱峰,通过NIST08谱库分别鉴定了其中15种和19种化合物。地桃花叶的主要挥发性成分是正十七烷、β-蒎烯、1,3,3-三甲基三环[2.2.1.0(2,6)]庚烷等;地桃花茎的主要挥发性成分是β-蒎烯、反式石竹烯、2-(7-十七炔)-四氢化-2H-吡喃等。[结论]地桃花茎和叶的挥发性成分主要是萜类衍生物,且地桃花不同部位的挥发性成分及含量都有一定的差异。     

广西不同产地莪术挥发油的含量测定及其GC-MS分析

[目的]测定广西境内不同产地的广西莪术鲜品挥发油的含量并对其化学成分进行分析。[方法]采用水蒸气蒸馏法提取挥发油,并用GC-MS方法对各挥发油的成分进行分析。[结果]不同产地的广西莪术鲜品挥发油得油率在0.44%~0.97%之间,经GC-MS分析鉴别出30余种化学成分,其中以倍半萜类为主。[结论]广西不同产地的广西莪术挥发油含量存在一定差异,其化学成分也有较大差别,其中以灵山广江的挥发油含量最高。     

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。     

基于黄酮类成分含量差异的子洲黄芪产地判别模式研究

目的 通过对不同产地黄芪中黄酮类成分含量的测定和分析，为黄芪优质药材商品子洲黄芪的精准产地鉴别提供实验依据。方法 以陕西子洲及山西浑源、内蒙古自治区、甘肃省的蒙古黄芪为实验材料，采用高效液相色谱-二极管矩阵检测器(HPLC-PDA)测定黄芪中主要黄酮类成分含量；基于0.7～1.0 cm直径段黄芪的黄酮类成分含量数据，通过主成分分析(PCA)、正交偏最小二乘法-判别分析(OPLS-DA)、聚类分析和Fisher判别分析，筛选子洲黄芪与其他产地黄芪的质量差异性标志物，并构建判别模型。结果 获得不同产地黄芪中主要黄酮类成分含量；PCA可基于黄酮类成分含量对子洲黄芪与其他产地黄芪进行初步区分，OPLS-DA确定了4种子洲黄芪与其他产地黄芪的质量差异性标志物，基于质量差异性标志物的不同产地黄芪聚类分析正确率为88.9%,以黄芪紫檀烷苷含量/黄芪异黄烷苷含量和4种黄酮苷含量之和所构建的判别模型对于不同产地黄芪的总体判别率为94.4%。结论 通过黄酮类成分判别不同产地黄芪的方法切实可行。     

没药挥发油抑制小鼠离体子宫平滑肌收缩及芳香化酶活性的效应及成分分析

目的 首次评价没药挥发油对小鼠离体子宫平滑肌收缩、芳香化酶的生物效应;并分析鉴定没药中的挥发性成分.方法 采用小鼠离体子宫收缩模型、芳香化酶抑制刺体外筛选模型评价没药挥发油的生物效应;采用GC-MS联用技术对没药挥发性成分进行分离分析、鉴定.结果 离体子宫平滑肌收缩试验表明没药挥发油对小鼠离体子宫平滑肌收缩有显著的抑制作用,ED50为14.21 ug/mL,95%可信限为11.58 ug/mL～17.50 ug/mL;芳香化酶抑制剂体外筛选实验表明没药挥发油具有显著的抑制芳香化酶活性,IC50为8.70 ug/mL;为探讨生物效应与成分间的关系,采用GC-MS联用技术分析鉴定了没药挥发油中53个化学成分,占挥发油总量的60.16%,结构类型主要为萜类、倍半萜类等类型化合物.结论 没药挥发油具有显著抑制小鼠离体子宫平滑肌收缩、抑制芳香化酶的活性,效应成分可能与其中的倍半萜类成分密切相关,其作用机制有待进一步深入研究.     

白术挥发油成分的研究

目的：对白术主要成分挥发油的研究进展作一总结。方法：采用文献回顾法进行归纳总结。结果：对于白术挥发性成分的研究主要有提取分析以及药理作用研究。结论：白术挥发性成分的药理作用现研究主要为抗癌作用。目前对白术挥发油提取及成分的研究也比较全面。提取方法的不同以及产地的不同其结果有较大的差异。     

不同产地白花前胡饮片挥发油化学成分的比较

目的:通过研究分析不同产地白花前胡饮片的挥发油化学成分,为白花前胡饮片的质量控制提供实验依据。方法:采用水蒸气蒸馏法提取白花前胡饮片的挥发油,用GC-MS法对其化学成分进行鉴定。结果:鉴定了挥发油中21种主要成分,其中有6种主要成分的相对含量超过60%。结论:主产区白花前胡饮片的挥发油成分没有明显差异,可以作为质量控制依据之一。     

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     

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.     

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.