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。     

紫丁香叶化学成分研究

目的 研究木犀科丁香属植物紫丁香Syringa oblata 叶的化学成分。方法 利用色谱方法反复进行分离纯化,通过波谱分析、化学方法及参照文献鉴定单体成分结构。结果 从紫丁香叶中分离得到8个化合物,分别鉴定为7-methyl-1-oxo-octahydro-cyclopenta ［c］ pyran-4-carboxylic acid (Ⅰ)、7-羟基-6-甲氧基香豆素(莨菪亭)(Ⅱ)、5,7,4′-三羟基黄酮(芹菜素)(Ⅲ)、白桦酸(Ⅳ)、乌苏酸(Ⅴ)、19α-羟基乌苏酸(Ⅵ)、3-甲氧基-4-羟基苯甲酸(Ⅶ)、胡萝卜苷(Ⅷ)。结论 化合物Ⅰ为环烯醚萜氧化产物,化合物Ⅱ、Ⅲ、Ⅵ、Ⅶ为首次从该属植物中分离得到。     

云南兔耳草中环烯醚萜苷类成分的研究Ⅲ

目的 对云南兔耳草的化学成分进行研究.方法 用硅胶柱色谱和HPLC对化合物进行分离,并用光谱方法进行结构鉴定.结果 分离鉴定了4个环烯醚萜苷类成分:6-O-α-L-(4“-O-E-cinnamoyl)rhamnopyranosylcatalpol(Ⅰ),6-O-α-L-(2“-O-E-p-methoxycinnamoyl)rhamnopyranosycatalpol(Ⅱ),6-O-α-L-(4“-O-E-feruloyl)rhamnopyranosylcatalpol(Ⅲ),gmelinoside L(Ⅳ).结论 以上4个化合物均为首次从该植物中分离得到.     

蔓荆的化学成分研究

目的研究蔓荆Vitextrifolia果实的化学成分。方法蔓荆干燥果实用95%乙醇提取,采用硅胶、Sephadex LH-20、Rp-8、Rp-18柱色谱进行分离纯化,通过波谱分析(MS、1H-NMR、13C-NMR)鉴定其结构。结果从蔓荆中分离得到15个化合物,其中6个二萜、2个倍半萜、1个环烯醚萜苷、1个芳香酸、1个蒽酯、1个黄酮、1个木质素和2个甾体,分别鉴定为:vitexilactone(Ⅰ)、previtexilactone(Ⅱ)、abietatriene-3β-ol(Ⅲ)、vitexlactamA(Ⅳ)、vitedoinB(Ⅴ)、vitetrifolinD(Ⅵ)、spathulenol(Ⅶ)、ent-4α,10β-dihydroxyaromadendrane(Ⅷ)、agnuside(Ⅸ)、大黄素甲醚(Ⅹ)、紫花牡荆素(Ⅺ)、对羟基苯甲酸(ⅩⅡ)、paulownin(ⅩⅢ)、过氧麦角甾醇(ⅩⅣ)、β-谷甾醇(ⅩⅤ)。结论除化合物Ⅰ、Ⅲ、Ⅵ、Ⅸ、Ⅺ、ⅩⅡ、ⅩⅣ外,其他8个化合物均为首次从该植物中分离得到。     

四妙勇安汤不同配伍组合中环烯醚萜苷类成分肠吸收研究

目的考察四妙勇安汤水提物中环烯醚萜苷类成分在不同肠段中、不同配伍组合时的肠吸收情况。方法建立大鼠在体单向肠灌流模型,采用UPLC-MS^n法测定不同肠段灌流液中哈巴苷、当药苷、马钱苷和哈巴俄苷4种环烯醚萜苷类成分的含量,计算其在不同肠段中的吸收速率常数(Ka)和表观渗透系数(Papp),并以此为指标评价环烯醚萜苷类成分肠吸收情况。结果四妙勇安汤不同配伍组合中环烯醚萜苷类成分在回肠和十二指肠中的吸收情况较空肠和结肠好(P<0.05)。回肠中4种环烯醚萜苷类成分的肠吸收参数均在金银花-玄参-当归3药配伍时最高。十二指肠中马钱苷、当药苷在金银花-当归配伍时表现出较高的肠吸收参数;而哈巴苷、哈巴俄苷在复方中肠吸收参数最高,单味药中最低。结论环烯醚萜苷类成分在配伍组合时的肠吸收参数(Ka、Papp值)较所含该类成分的单味药材高。在一定程度上表明复方配伍可促进环烯醚萜苷类成分的吸收,改善其口服生物利用度低的问题。     

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。     

生地黄水提液中环烯醚萜苷类成分纯化工艺研究

目的优选生地黄水提液中环烯醚萜苷类成分的纯化工艺参数。方法以梓醇含量为评价指标,采用大孔树脂纯化方法,确定总环烯醚萜苷的纯化工艺条件。结果生地黄水提液中总环烯醚萜苷最佳分离纯化工艺为：选用H103型大孔树脂,以1 BV/h速度上样,用3 BV的去离子水水洗除杂,然后用5 BV的30%的乙醇以1.5 BV/h的速度洗脱,纯化后梓醇含量为8.31%,较纯化前提高4.7倍。结论该纯化工艺条件稳定、合理、可行,可作为生地黄水提液中环烯醚萜苷类成分的纯化方法。     

马鞭草环烯醚萜苷类成分的研究

目的：探索马鞭草抗早孕有效成分。方法：甲醇渗漉提取，反复硅胶柱层析分离，理化常数和光谱分析鉴定化合物结构。结果：从马鞭草甲醇提取物中分离并鉴定了３个环烯醚萜苷，分别为马鞭草苷（Ⅰ）、３，４二氢马鞭草苷（Ⅱ）和５－羟基马鞭草甘（Ⅲ）。结论：其中Ⅱ为新的天然化合物。     

藏药大籽獐牙菜的化学成分研究

目的研究藏药大籽獐牙菜Swertia macrosperma C.B.Clark全草的化学成分。方法运用硅胶柱层析和高效液相色谱法进行化学成分的分离纯化,通过理化常数和波谱分析鉴定化合物结构。结果从大籽獐牙菜的80%乙醇提取物中分离得到9个化合物,分别鉴定为芒果苷(Ⅰ)、1-羟基-3,7,8-三甲氧基口山酮(Ⅱ)、1,8-二羟基-3,7-二甲氧基口山酮(Ⅲ)、1,7-二羟基-3,8-二甲氧基口山酮(Ⅳ)、1,5,8-三羟基-3-甲氧基口山酮(Ⅴ)、1,7,8-三羟基-3-甲氧基口山酮(Ⅵ)、獐牙菜苦苷(Ⅶ)、龙胆苦苷(Ⅷ)、獐牙菜苷(Ⅸ)。结论上述化合物Ⅳ、Ⅵ～Ⅸ为首次从大籽獐牙菜中分离得到。     

秦艽中裂环环烯醚萜苷类成分的纯化工艺研究

目的:研究秦艽提取物中裂环环烯醚萜苷类成分的富集纯化工艺。方法:以秦艽中的主要成分龙胆苦苷为跟踪指标,比较不同厂家、不同型号的大孔树脂对秦艽提取物中裂环环烯醚萜苷类成分(龙胆苦苷)的吸附与解吸附能力,确定最佳树脂型号;选择最佳的洗脱溶剂和洗脱体积。结果:AB-8型大孔吸附树脂对秦艽提取物中裂环环烯醚萜苷类成分有较好的吸附能力;50%乙醇溶液解吸附能力最强;5个柱体积溶剂可洗脱下90%裂环环烯醚萜苷类成分。结论:初步确定了大孔树脂法分离纯化秦艽提取物中裂环烯醚萜苷类成分的最佳工艺。     

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.     

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.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.