三叉刺中黄酮类化学成分研究

目的 研究海南特有植物三叉刺Trifidacanthus unifoliolatus茎提取物中的化学成分.方法 通过硅胶柱色谱,对该植物茎的醋酸乙酯部位中成分进行分离和纯化;利用质谱及核磁等谱学方法确定所分离化合物的结构;并利用ORAC法测定化合物的抗氧化活性.结果 分离得到7个黄酮类化合物,分别为dalbergioidin(Ⅰ)、isoferreirin(Ⅱ)、染料木素(Ⅲ)、2'-methoxyl-genistein(Ⅳ)、芹菜素(Ⅴ)、山柰酚(Ⅵ)和香橙素(Ⅶ);且所有化合物都具有一定的抗氧化活性.结论 所有化合物都为首次从该植物中分离得到,其抗氧化活性因结构不同而有差异.     

四季青叶化学成分研究

目的:研究四季青叶中的化学成分.方法:溶剂萃取及各种色谱技术分离纯化,理化性质和光谱数据鉴定.结果:分离得到9个化合物(5个黄酮类化合物),分别为山奈素3-O-β-D-半乳糖苷(Ⅰ)、紫云英苷(Ⅱ)、山柰酚(Ⅲ)、洋芹素(Ⅳ)、槲皮素(Ⅴ),其余为豆甾醇(Ⅵ)、β-谷甾醇(Ⅶ)、胡萝卜苷(Ⅷ)和葡萄糖(Ⅸ).结论:Ⅰ为首次从该属植物中分得,Ⅱ～Ⅸ均为首次从该植物中分得.     

广西白背叶植物叶的化学成分

目的 研究广西白背叶植物(Mallotus apelta)叶中的化学成分.方法 利用反复硅胶柱层析的方法 对广西白背叶植物叶中的化学成分进行分离和纯化,通过IR、MS、NMR等光谱技术和化学方法 鉴定化合物的结构.结果 从广西白背叶中分离得到4个化合物,经鉴定为大黄酚(Ⅰ),烟酸 (Ⅱ),异东莨菪内酯(Ⅲ)和对甲氧基苯甲酸 (Ⅳ).结论 化合物Ⅰ、Ⅱ、Ⅲ、Ⅳ均为首次从该植物中分得.     

蜀葵花的化学成分研究(Ⅱ)——黄酮类成分研究

目的研究蜀葵Althaea rosea花中的黄酮类化学成分。方法用各种柱色谱方法进行分离纯化,根据理化性质和波谱解析鉴定其化学结构。结果分离得到9个黄酮类化合物,分别鉴定为紫云英苷(astragalin,Ⅰ)、山柰酚(kaempferol,Ⅱ)、洋芹素(apigenin,Ⅲ)、香橙素(aromadendrin,Ⅳ)、异甘草苷(isoliquiritin,Ⅴ)、南酸枣苷(cho-erospondin,Ⅵ)、虎耳草苷(saxifragin,Ⅶ)、4′,5,7,8-tetrahydroxy-3-methoxyflavone(Ⅷ)、芦丁(rutin,Ⅸ)。结论其中化合物Ⅲ～Ⅷ为首次从蜀葵属中得到,化合物为首次从该植物中得到。     

细梗胡枝子黄酮类成分的研究

目的 研究细梗胡枝子(Lespedeza virgate)中的黄酮类化学成分.方法 对细梗胡枝子乙醇提取液的正丁醇部分进行反复分离纯化,根据光谱数据和理化性质确定化合物结构.结果 从细梗胡枝子的地上部分分离得到8个黄酮类化合物,分别为苜蓿素(Ⅰ)、山奈酚(Ⅱ)、芹菜素(Ⅲ)、山奈酚苷(Ⅳ)、桑色素(V)、木犀草素(Ⅵ)、槲皮素-3-O-?-L鼠李糖苷(Ⅶ)、柯伊利素H-7-O-?-D-芦丁糖苷(Ⅷ).结论 Ⅰ、Ⅱ、Ⅲ、Ⅴ、Ⅵ为首次从该植物中分离得到,Ⅷ为首次从胡枝子属植物中分离获得.     

蒺藜黄酮类化学成分的分离和鉴定

目的:对蒺藜全草黄酮类化学成分进行研究.方法:聚酰胺柱色谱和硅胶柱色谱分离,光谱分析鉴定结构.结果:分离得到了6个黄酮类化合物,分别是槲皮素-3-0-B-D-葡萄糖苷(Ⅰ);槲皮素-3-0-龙胆二糖苷(Ⅱ);山柰酚-3-0-龙胆二糖苷(Ⅲ);山柰酚-3-0-B-D-葡萄糖苷(Ⅳ);槲皮素(Ⅴ);山柰酚(Ⅵ).结论:首次系统报道了蒺藜中6个黄酮类化合物的光谱鉴定教据.     

白花蛇舌草化学成分的研究

目的 对研究中药白花蛇舌草化学成分.方法 采用各种色谱技术进行分离,应用波谱数据及理化性质,对分离得到的化合物进行结构鉴定.结果 自白花蛇舌草中分离得到7个化合物,分别鉴定为对香豆酸(Ⅰ),对香豆酸甲酯(Ⅱ),2-醛基-5-羟甲基呋喃(Ⅲ),槲皮素(Ⅳ),山柰酚(Ⅴ),β-谷甾醇(Ⅵ),胡萝卜苷(Ⅶ).结论 化合物Ⅱ,Ⅲ为首次从该种植物中分离得到.     

高良姜黄酮类化学成分的研究

目的对高良姜A lp in ia off icinarum的黄酮类化学成分进行研究。方法采用95%乙醇提取,利用各种色谱技术进行分离纯化,根据化合物的理化性质和光谱数据进行结构鉴定。结果从高良姜的乙醇提取物中得到8个黄酮类化合物,分别为高良姜素(Ⅰ)、高良姜素-3-甲醚(Ⅱ)、山柰素-4′-甲醚(Ⅲ)、山柰酚(Ⅳ)、槲皮素(Ⅴ)、乔松素(Ⅵ)、二氢高良姜醇(Ⅶ)、儿茶精(Ⅷ)。结论化合物Ⅵ和Ⅶ为首次从该植物中分离得到。     

三桠苦叶的化学成分研究

【目的】研究三桠苦叶丙酮部位的化学成分。【方法】应用多种色谱方法进行分离和纯化,并利用核磁共振等方法解析化合物结构。【结果】从三桠苦叶丙酮部位中分离得到10个化合物,鉴定了7个化合物,它们的结构分别被鉴定为山奈酚(Ⅰ),槲皮素(Ⅱ),胡萝卜苷(Ⅲ),异鼠李素(Ⅳ),山奈酚-3-O-β-D-葡萄吡喃糖苷(Ⅴ),山奈酚-3-O-β-D-葡萄吡喃糖醛酸苷(Ⅵ),3,5,4’-三羟基-8,3’-二甲氧基-7-异戊烯氧基黄酮(Ⅶ)。【结论】化合物Ⅰ、Ⅱ、Ⅳ、Ⅵ为首次从该属植物中分离得到。     

六角莲化学成分的研究

目的研究六角莲Dysosmapleiantha的化学成分。方法用1%盐酸沉淀出酸性树脂后再采用反复硅胶柱色谱分离纯化,通过理化常数测定和光谱分析鉴定其化学结构。结果从六角莲的酸性树脂中分离鉴定了10个化合物,其中5个四氢萘类木脂素化合物:鬼臼酮(Ⅰ)、脱氢鬼臼毒素(Ⅱ)、鬼臼毒素(Ⅲ)、4′-去甲基鬼臼毒素(Ⅳ)、4′-去甲基脱氢鬼臼毒素(Ⅴ);两个黄酮类化合物:山柰酚(Ⅵ)、槲皮素(Ⅶ);以及正十六烷酸(Ⅷ)、β-谷甾醇(Ⅸ)和胡萝卜苷(Ⅹ)。结论化合物是新化合物,化合物β为首次从该属植物中分离得到,其他化合物均为首次从该植物中分离得到。     

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.