含1,2-苯并噻嗪结构的咪唑并［1,2-b］［1,3,4］三氮唑衍生物的合成及其抗肿瘤活性

以吡罗昔康甲基物为原料,利用生物电子等排等药物设计原理,合成8个结构新颖的三氮唑化合物,其结构经¹H NMR、MS表征。通过测定对胰腺癌细胞Capan-1和白血病细胞L1210的抑制活性,评价目标化合物的体外抗肿瘤活性。结果表明,化合物6b(IC₅₀=3.6±0.5 μmol/L)对胰腺癌细胞Capan-1表现出较好的抑制活性;化合物6a(IC₅₀=1.8±0.2 μmol/L)对白血病细胞L1210表现出较好的抑制活性。初步的抗肿瘤活性实验结果表明,咪唑并三氮唑侧链的引入,对提高该类化合物的抗肿瘤活性有一定的作用。     

硝酸酯类NO供体型齐墩果酸衍生物的合成及抗肿瘤活性

以齐墩果酸为先导物,将其3位OH通过各种类型的连接基团与硝酸酯类NO供体偶联,合成了10个目标化合物（2,4,8a～8c,10,12,15a～15c）。结构均经IR,MS及¹H NMR确证,并采用MTT法测定了偶联物的细胞毒性。结果显示,化合物8c对人肺癌细胞A549、人结肠癌细胞HT-29及人肝癌细胞SMMC-7721均具有较强的抗肿瘤活性,值得进一步研究。     

杂环并五环三萜化合物的合成及糖原磷酸化酶抑制活性

目的： 对天然五环三萜进行结构修饰,寻找新型糖原代谢调控药物。方法： 以齐墩果酸和熊果酸为先导物,在其A环骈合吲哚环、喹喔啉环和吡嗪环,合成一系列含氮杂环衍生物,并采用兔肌肉糖原磷酸化酶筛选模型评价其活性。结果与结论： 合成了12个杂环衍生物,结构均经IR、¹H NMR、¹³C NMR和MS确证。除化合物12外,其余化合物均显现出糖原磷酸化酶抑制活性,IC₅₀在14～252 μmol/L范围内。其中,化合物15活性最好,其IC₅₀为14 μmol/L。     

4-(N-芳基)胺基-6-长链烷氧基取代蝶啶类化合物的合成及其抗肿瘤活性

采用具有喹唑啉为母核的抗肿瘤药物作为先导化合物,利用生物电子等排原理,设计并合成一系列4-(N-芳基)胺基-6-长链烷氧基取代蝶啶类化合物7a~7l,并利用MTT法测试其对A549、KG1a和HGC-27肿瘤细胞的增殖抑制作用。以3-氨基吡嗪-2-羧酸甲酯为起始底物,通过6步反应合成12种目标化合物(7a~7l)并确证其结构(¹H NMR、¹³C NMR、MS)。生物活性试验表明,蝶啶4位为2-氯-5-硝基苯胺基取代时,其活性均高于其他苯胺基取代的产物。化合物7b对A549的活性(IC₅₀=11.55 μmol/L)与阳性对照物吉非替尼(IC₅₀=5.95 μmol/L)十分接近;化合物7k对3组细胞的IC₅₀均十分接近对照物吉非替尼。由于筛选出的化合物均有2-氯-5-硝基苯胺基片段,可以此结构为基础进行深入研究。     

罗丹宁衍生物的合成及抗肿瘤活性

在罗丹宁衍生物WL-276的基础上设计并合成一系列新的罗丹宁衍生物,并对这些化合物的抗肿瘤活性进行测定。以氨基酸为原料,经环合和缩合反应,合成了化合物Ⅱ_1-4,然后分别与硫化氢供体ADT-OH偶联得到化合物Ⅲ_1-4,共合成了8个目标化合物,其中4个未见报道,其结构均经¹H NMR、IR和HR-MS确证。然后用MTT法筛选其抗肿瘤活性。初步研究表明,化合物Ⅱ_1,3,4和Ⅲ_1-4对HepG2肿瘤细胞和DU145肿瘤细胞的增殖均具有较强的抑制作用,且化合物Ⅲ的活性比Ⅱ强;化合物Ⅲ_2,4对HepG2细胞和化合物Ⅲ_1,2,4对DU145细胞的抗增殖活性均高于阳性对照5-氟尿嘧啶。     

含1,2-苯并噻嗪结构的［1,3,4］噻二唑并［3,2-a］［1,3,5］三嗪衍生物的合成及其抗肿瘤活性

以吡罗昔康合成中间体(CAS:35511-15-0)为原料,利用活性拼接等药物设计原理,设计并合成了9个结构新颖的目标化合物,其结构经¹H NMR、MS等表征。通过测定对胰腺癌细胞Capan-1、白血病细胞L1210和人肝癌细胞SMMC-7721的抑制活性,评价目标化合物的体外抗肿瘤活性。结果表明,化合物6f(IC₅₀=2.4±0.5 μmol/L)对胰腺癌细胞Capan-1表现出较好的抑制活性;化合物6h(IC₅₀=5.4±0.2 μmol/L)对白血病细胞L1210表现出较好的抑制活性;化合物6g(IC₅₀=3.8±0.2 μmol/L)对人肝癌细胞SMMC-7721表现出较好的抑制活性。初步的抗肿瘤活性实验结果表明,将吡罗昔康3位的侧链替代为噻二唑并三嗪侧链,对提高该类化合物的抗肿瘤活性有一定的作用。     

蛇床子素二苯乙烯类衍生物的合成及抑制微管蛋白聚合作用

以蛇床子素为先导化合物,合成了6个目标化合物（Ⅵ_1-5 、Ⅵ₇）,其结构经MS及¹H NMR确证;通过抗人脐静脉内皮细胞（HUVEC）体外增殖的实验,测定了目标物抑制微管蛋白聚合的活性。结果表明,所合成的化合物多数具有一定的抑制微管蛋白聚合的作用,其中化合物Ⅵ₇ 的活性最强,值得进一步深入研究。     

异甜菊醇衍生物的合成及抗肿瘤活性

对异甜菊醇C-环、D-环进行结构修饰与改造,同时将其C₁₉-COOH成酯,设计并合成了 9个未见文献报道的新化合物(5~13),所有目标化合物的结构均经ESI-MS,IR,¹H NMR确定。采用MTT法测试了目标化合物对HCT116,Huh7,SW620及HepG2等细胞的抗肿瘤活性。初步研究结果表明,化合物13表现出对人结肠癌HCT116细胞具有选择性抑制作用(IC₅₀=3.57 μmol/L),与阳性对照舒尼替尼(sunitininb)(IC₅₀=5.62 μmol/L)活性相当,化合物10对HCT116,Huh7,SW620均有较强抑制作用。     

4-苯基-吡咯并［2,3-d］嘧啶类JAK2激酶抑制剂的设计、合成和抗肿瘤活性

以JAK2激酶抑制剂鲁索替尼(ruxolitinib)为先导化合物,应用分子杂交的药物设计原理,通过结构修饰改造,设计、合成了一系列新的4-苯基-吡咯并［2,3-d］嘧啶类衍生物并进行初步的体外活性评价。以4,6-二羟基嘧啶为起始原料,依次通过Vilsmeier-Haack反应、S_NAr取代、成环、脱水、Suzuki偶联、酰基化等多步反应最终合成得到12个目标化合物(12a~12l),其结构经¹H NMR、¹³C NMR、HRMS确证。对目标化合物进行体外JAK2激酶活性、GM-CSF诱导的TF-1细胞活性测试,结果表明,部分化合物(12b、12e和12h)具有一定程度的JAK2抑制活性;采用MTT法测试目标化合物对JAK2非依赖性A549细胞的抗增殖能力,结果显示,该类化合物A549细胞表现出良好的增殖抑制活性,尤其是化合物12c(IC₅₀=0.12 μmol/L)活性最强,表明该类化合物具有潜在的研究开发价值。     

新型法尼基硫代水杨酸/羟基肉桂酸偶联物的合成及其抗肿瘤活性

通过偶联法尼基硫代水杨酸(FTS)的羧基与羟基肉桂酸的酚羟基,设计合成了16个新型FTS/羟基肉桂酸偶联物(7a~7p),并对其进行了体外抗肿瘤活性研究。结果表明,大部分化合物对6种人肿瘤细胞具有较强的抗增殖活性,其中,化合物7b表现出最佳的肿瘤细胞增殖抑制活性,对所测肿瘤细胞的IC₅₀为5.51~9.25 μmol/L,优于FTS和索拉非尼的活性。并且,化合物7b可以选择性地抑制肿瘤细胞的生长,而对正常细胞损伤较小。此外,流式细胞分析显示化合物7b可以浓度依赖性地诱导SMMC-7721细胞凋亡。     

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.