小木通茎的化学成分研究(Ⅰ)

目的研究小木通Clematis armandii茎的化学成分。方法采用反复硅胶柱色谱分离,Sephadex LH-20及重结晶等方法进行分离纯化,根据波谱数据结合理化性质解析化合物结构。结果从小木通的茎中分离得到10个化合物,其结构分别鉴定为豆甾醇(Ⅰ)、3β-羟基豆甾-5,22-二烯-7-酮(Ⅱ)、5α-豆甾烷-3β,6α-二醇(Ⅲ)、豆甾醇-3-O-β-D-葡萄糖苷(Ⅳ)、胡萝卜苷(Ⅴ)、葡萄糖(Ⅵ)、正二十二烷酸(Ⅶ)、5-羟甲基-2-呋喃醛(Ⅷ)、3-甲氧基-4-羟基-苯甲酸(Ⅸ)和阿魏酸(Ⅹ)。结论除Ⅴ外,其余化合物均为首次从该植物中分离得到。     

空心莲子草化学成分研究

目的 研究空心莲子草Alternanthera philoxeroides的化学成分.方法 采用硅胶、Toyopearl HW-40,Sephadex LH-20柱色谱对该植物有效部位进行分离、纯化,根据波谱数据分析确定化合物结构.结果 从空心莲子草乙醇提取物的石油醚萃取层中分离得到12个化合物,分别为环桉烯醇(Ⅰ)、24-亚甲基环阿尔廷醇(Ⅱ)、十八烷酸(Ⅲ)、二十四烷酸(Ⅳ)、齐墩果酸(Ⅴ)、熊果酸(Ⅵ)、(24R)-5A.豆甾烷-3,6-二酮(Ⅶ)、豆甾烷-22-烯-3,6-二酮(Ⅷ)、α-菠甾醇(Ⅸ)、β-谷甾醇(Ⅹ)、(22E,20S,24R)-5α-8α-桥二氧-麦角甾烷-6,22-二烯-3β醇(Ⅺ)、豆甾醇-3-O-βD-吡喃葡萄糖苷(Ⅻ).结论 化合物Ⅳ、Ⅵ～Ⅷ均为首次从该植物中分离得到.     

狗肝菜的化学成分研究

目的对狗肝菜Dicliptera chinensis全草的化学成分进行研究。方法采用硅胶柱色谱和制备性薄层色谱进行分离、纯化,IR、NMR和MS等方法进行结构鉴定。结果从环己烷萃取部分得到13个化合物,分别鉴定为正三十六烷醇(Ⅰ)、硬脂酸(Ⅱ)、羽扇烯酮(Ⅲ)、羽扇豆醇(Ⅳ)、谷甾烷-4-烯-3-酮(Ⅴ)、豆甾烷-5-烯-7-酮-3β-棕榈酸酯(Ⅵ)、β-谷甾醇(Ⅶ)、齐墩果酸(Ⅷ)、3β,6β-豆甾烷-4-烯-3,6-二醇(Ⅸ)、6β-羟基-豆甾烷-4-烯-3-酮(Ⅹ)、3β-羟基-豆甾烷-5-烯-7-酮(Ⅺ)、去氢催叶萝芙叶醇(Ⅻ)和催叶萝芙叶醇(ⅩⅢ)。结论除Ⅱ化合物和Ⅶ外,皆为首次从该属植物中发现。     

广西血竭化学成分的研究

目的对广西血竭Dracaena cochinchinensis脂溶性成分进行研究。方法采用硅胶柱层色谱，制备TLC，重结晶进行分离纯化，运用现代波谱技术鉴定化合物的结构。结果从广西血竭中分离并鉴定了6个脂溶性化合物，分别为：1，2，4，5-四氯-3，6-二甲氧基苯(I)、胆甾-4α-甲基-7-烯-3β醇(Ⅱ)、胆甾-4α-甲基-7-烯-3-酮(Ⅲ)、正二十六烷(Ⅳ)、胆甾-7-烯-3β醇(V)、胆甾-7-烯-3-酮(Ⅵ)。结论化合物Ⅳ～Ⅵ为首次从该植物中得到。     

剑叶龙血树叶化学成分研究

目的对剑叶龙血树叶的化学成分进行研究。方法采用柱色谱技术进行分离纯化,利用理化性质及波谱方法对实验得到的单体化合物进行结构鉴定。结果共得到13个单体化合物,分别鉴定为异鼠李素(Ⅰ)、槲皮素(Ⅱ)、25(R)-螺甾烷-5烯-3-β-醇(Ⅲ)、纤细皂苷(Ⅳ)、25(R)-螺甾烷-5-烯-3β,14α-二醇(Ⅴ)、25(R)-螺甾烷-5-烯-3β,14α-二醇-3-O-β-D-葡萄吡喃糖苷(Ⅵ)、25(R)-螺甾烷-5-烯-3β,14α-二醇-3-O-α-L-鼠李吡喃糖基(1→4)-β-D-葡萄吡喃糖苷(Ⅶ)、25(R)-螺甾烷-14α-羟基-4-烯-3-酮(Ⅷ)、7β-羟基-谷甾醇-3-O-β-D-吡喃葡萄糖苷(Ⅸ)、β-豆甾醇(Ⅹ)、豆甾醇-3-O-β-D-葡萄糖苷(Ⅺ)、胡萝卜苷(ⅩⅡ)、β-甲基葡萄糖苷(ⅩⅢ)。结论剑叶龙血树叶的主要成分为螺甾类化合物。化合物Ⅰ~Ⅲ、Ⅴ、Ⅵ、Ⅷ、Ⅸ均为首次从该植物中得到。     

米口袋化学成分的研究

从米口袋（Gueldenstae dtia multiflora Bge.）中分离得到11个化合物,应用光谱学和化学方法鉴定了其中7个化合物的结构,分别为黑麦草内酯、烈香杜鹃素Ⅰ、木栓醇、木栓酮、4-烯-3-酮豆甾烷、A’-Neogammacer-22（29）-en-3β-ol,acetate和β-谷甾醇。7个化合物均从该植物中首次分离得到,其中化合物Ⅰ是该植物中的水溶性成分。     

宽叶荨麻化学成分的研究

目的研究宽叶荨麻地上部分的化学成分。方法运用多种色谱法进行分离纯化,通过理化性质和波谱数据以及和对照品对照进行结构鉴定。结果从宽叶荨麻地上部分分离并鉴定了13个化合物,分别为:3β-羟基-5-烯-欧洲桤木烷醇(Ⅰ)、豆甾-4-烯-3-酮(Ⅱ)、1,3-二肉豆蔻酸-2-山梨酸-甘油三酯(Ⅲ)、α-香树脂醇(Ⅳ)、β-香树脂醇(Ⅴ)、羽扇豆烷醇(Ⅵ)、4-羟基苯甲酸(Ⅶ)、正二十八烷醇(Ⅷ)、正二十八烷酸甲酯(Ⅸ)、十六烷酸(Ⅹ)、十一烷酸(Ⅺ)、胡萝卜苷(ⅩⅡ)、β-谷甾醇(ⅩⅢ)。结论化合物Ⅰ～ⅩⅢ均为首次从宽叶荨麻中分离得到,其中化合物Ⅰ～Ⅺ为首次从荨麻属植物中分离得到。     

老鼠簕的化学成分研究

目的研究老鼠A canthus ilicif olius的化学成分。方法利用硅胶柱色谱、快速低压干柱分离,经理化常数测定,结合IR1、H-NM R1、3C-NM R、ES I-M S鉴定结构。结果从老鼠茎的75%乙醇提取液中共分得8个化合物,分别鉴定为正二十六烷酸(Ⅰ)、豆甾醇(Ⅱ)、正三十四烷醇(Ⅲ)、2-苯并唑啉酮(Ⅳ)、豆甾醇-3-O-β-D-吡喃葡萄糖苷(Ⅴ)、香草酸(Ⅵ)、4-羟基-2-苯并唑啉酮(Ⅶ)、槲皮素(Ⅷ)。结论化合物Ⅶ是首次报道的天然产物,化合物Ⅰ、Ⅲ、Ⅵ和Ⅶ为首次从该植物中报道。     

滇产苦葛化学成分研究

目的研究滇产苦葛Puerariapeduncularis的化学成分。方法分离鉴定苦葛乙醇提取物中的化合物。结果从苦葛中分离鉴定了5个化合物,经光谱分析分别被鉴定为5α-豆甾-7,22-二烯-3β-醇(Ⅰ)、二十六烷酸-α-甘油酯(Ⅱ)、3β,22β,24-三羟基-齐墩果-12-烯(Ⅲ)、齐墩果酸(Ⅴ)和齐墩果酸-3β-O-葡萄糖苷(Ⅵ)。结论化合物Ⅰ、Ⅱ、Ⅳ和Ⅴ为首次从该植物中分离得到。     

密脉鹅掌柴的化学成分及其抗肿瘤活性

目的 阐明民间用于癌症治疗的密脉鹅掌柴Schefflera venulosa的化学成分及其抗肿瘤活性。方法 用小鼠乳腺癌tsFT210细胞的流式细胞术筛选模型，确定抗肿瘤活性部位；利用Sephadex LH-20、硅胶等柱色谱，分离活性部位的化学成分；根据理化性质和波谱数据鉴定化合物的化学结构，用流式细胞术和SRB法初步评价化合物对tsFT210和K562细胞的抗肿瘤活性。结果 从密脉鹅掌柴活性部位分离鉴定了9个化合物：2-羟基-3苯胺羰基-1-偶氮苯基-萘(Ⅰ)、大黄酚(Ⅱ)、2，6-二甲氧基对苯醌(Ⅲ)、正十六烷酸(Ⅳ)、正十八烷酸(Ⅴ)、正二十六烷酸(Ⅵ)、4，22-二烯-3-酮豆甾烷(Ⅶ)、5，22-二烯-7-酮-3β-羟基豆甾烷(Ⅶ)和β-谷甾醇(Ⅸ)；活性测试结果表明化合物Ⅱ、Ⅲ对K562细胞有增殖抑制活性，其IC50值分别为52．50和25．50μg／mL，化合物Ⅳ对在30μg／mL的低浓度对tsFT210细胞具有细胞周期G2／M期抑制活性，而在100μg／mL的高浓度时却呈现显著的细胞周期G2／M期抑制和细胞凋亡诱导活性。结论 化合物Ⅰ为新天然产物，中文俗名为808猩红(808Scarlet)，除β-谷甾醇外，其余均系首次从密脉鹅掌柴中分离得到。化合物Ⅲ的抗肿瘤活性为首次发现，化合物Ⅱ～Ⅳ为该植物抗肿瘤活性成分为首次报道。     

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.     

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.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

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.