反相制备液相色谱同时分离制备独一味中4种环烯醚萜苷类化合物

目的 建立独一味中环烯醚萜苷类化合物山栀苷甲酯、螃蟹甲苷II、番木鳖苷和8-O-乙酰山栀苷甲酯的快速制备色谱方法。方法 独一味水提物经聚酰胺色谱柱和大孔吸附树脂柱分离后,进行快速制备液相色谱分离,根据制备色谱图收集流出液,采用HPLC和质谱定性定量分析。结果 质谱法确定实验所得4种单体分别为山栀苷甲酯、螃蟹甲苷II、番木鳖苷和8-O-乙酰山栀苷甲酯,RP-HPLC法分析质量分数分别为95.7%、94.8%、96.3%、98.2%。结论 该分离方法中各组分分离效果较好,可用于独一味中4种环烯醚萜苷类化合物的分离制备。     

几种钓钟柳属植物中的环烯醚萜类和一种新的二聚开链单萜葡糖甙

玄参科钓钟柳属植物含有各种类型的环烯醚萜甙,已鉴别了桃叶珊瑚甙,梓醇,且发现了少见的缬草型环烯醚萜酯甙。光钓钟柳(Penstemon nitidus Dougl.)叶的甲醇提取物经DCCC和制备TLC,分离出四种环烯醚萜葡糖甙,用光谱法确认了山茱萸甙(cornin)(1),10-羟山茱萸甙(2),戟叶马鞭草甙(hastatosidc)(3)和β-二氢戟叶马鞭草甙(4)。(2)是一种新的环烯醚萜葡糖甙,经还原(3)制备得(4),但至今在自然界尚未发现。     

橄榄苦苷提取分离和药理活性的研究进展

橄榄苦苷（Oleuropein）,是一种无毒的裂环烯醚萜苷类化合物。裂环烯谜萜（secoiridoids）是环戊烷单萜衍生物中的一类化合物,是由环烯谜萜类化合物裂环而成,只占环烯谜萜类的很少一部分。     

超声提取素馨花总环烯醚萜苷的单因素实验研究

素馨花药材又名耶悉茗花,为木犀科茉莉属植物素馨花(Jasminum officinale L.var.grandiflorum)的干燥花蕾具有疏肝解郁、行气止痛之功效,在我国民间用于治疗消化不良、十二指肠球部溃疡及慢性肝炎、肝硬化等症[1]。素馨花主要化学成分为环烯醚萜苷类、黄酮类和三萜皂苷类化合物[2-3],其中环烯醚萜苷类化合物主要为橄榄苦苷,且具有抗     

人肠道菌群对桃叶珊瑚苷体外转化代谢作用的研究

目的 研究人肠道菌群对桃叶珊瑚苷体外转化代谢的作用。方法 采用体外肠道菌孵育方法,在厌氧条件下,将桃叶珊瑚苷分别与3位健康人肠道菌群共同培养48 h,采用高效液相色谱-串联质谱(HPLCMS/MS)联用技术检测不同时间点孵育体系中桃叶珊瑚苷的相对含量及其代谢产物。结果 健康人肠道菌群可转化代谢桃叶珊瑚苷,其主要代谢产物为桃叶珊瑚苷苷元和aucubmines A;其主要代谢途径为脱糖基、氨基化及氧化作用。不同受试者肠道菌群对桃叶珊瑚苷代谢速率存在差异,而桃叶珊瑚苷苷元和aucubmines A在共孵育2 h和4 h后可分别被检测到。结论 桃叶珊瑚苷可被健康人肠道菌群代谢,4～8 h主要代谢产物为桃叶珊瑚苷苷元,8 h后代谢产物主要为aucubmines A。     

董衣草水苏苷的药理作用

作者研究了来自锐利糙苏(拟)Phlomispungens var.pungens 地上部分的苯丙烷苷类化合物连翘苷 B(forsythoside,1)、aly-ssonoside(2)及环烯醚萜苷类化合物野芝麻新苷(lamiide,3)对自由基所致大鼠主动脉环内皮依赖性舒张功能减弱的作用。在器官浴电解产生自由基前,主动脉环标本均用去氧肾上腺素预收缩,然后分别与该植物水提取物(200μg/mL)、苯丙烷苷提取部位(100μg/mL)、环烯醚萜苷提取部位(150μg/mL)、化合物1～3(均为10~(-5)～     

对马鞭草中环烯醚萜苷类生物合成路径的探讨

目的：探讨马鞭草中环烯醚萜苷类的生物合成路径。方法：分析马鞭草中环烯醚萜苷类化合物结构并与其生物合成路径对照。结果：新化合物3，4－二氢马鞭草苷的结构不符合这一生物合成路径。结论：马鞭草中环烯醚萜苷类的生物合成可能存在其它路径。     

从藏边大黄根中分得一新的蒽醌苷硫酸酯

马鞭草属植物V．littoralis H．B．K．是生长在巴拉圭的多年生药用植物。作者从该植物的地上部分分得一新的环烯醚萜苷类化合物gelsemiol-6’-trans-caffeoyl-1-glucoside(1)，4个已知的苯乙醇苷类化合物洋丁香酚苷(2)、2’-乙酰洋丁香酚苷(3)、焦地黄苯乙醇苷(4)和异洋丁香酚苷(5)。     

左归丸水提液中总环烯醚萜苷含量测定

目的:建立左归丸水提液中总环烯醚萜苷含量测定的方法。方法:水提液通过醇沉后经大孔树脂D101对环烯醚萜苷进行分离纯化,蒸干后加香草醛和高氯酸水浴显色后用紫外可见分光光度计进行含量测定。结果:大孔树脂D101对环烯醚萜苷的分离纯化效果良好,左归丸中环烯醚萜苷以马钱苷含量较高,故选马钱苷为对照品,显色后在24.96μg~99.84μg范围内线性关系良好。结论:该方法可用于左归丸水提液中总环烯醚萜苷的含量测定。     

RP-HPLC法测定山茱萸环烯醚萜总苷中马钱苷和莫诺苷含量

目的建立反相高效液相色谱法测定山茱萸环烯醚萜总苷中马钱苷和莫诺苷含量的方法,为完善山茱萸环烯醚萜总苷的质量评价提供依据。方法色谱柱:Lichrosphere C18柱(4.6mm×150mm,5μm);流动相:乙腈-水梯度洗脱(0~12min,乙腈比例由10%增加到55%);流速1.0mL/min;柱温30℃;检测波长240nm。结果马钱苷和莫诺苷分别在0.088~0.528μg(r=0.999 8)和0.088~0.352μg(r=0.999 5)之间范围内线性关系良好;平均回收率(n=6)分别为98.7%(RSD=1.3%)、98.6%(RSD=0.8%)。结论所建立的方法简便、准确、分离效果好、重复性好,可以用于控制山茱萸环烯醚萜总苷的质量。     

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.