B环碘取代白杨素的合成及其抗癌活性研究

目的:合成B环碘取代的白杨素衍生物并观察这些衍生物抗癌活性。方法:MTT比色法测定B环碘取代的白杨素衍生物对人急性粒细胞性白血病(HL-60)细胞、人结肠癌(HT-29)细胞、人胃腺癌(SGC-7901)细胞增殖抑制作用。结果:B环碘取代的白杨素衍生物对HL-60细胞、HT-29细胞、SGC-7901细胞增殖具有不同程度的抑制作用。结论:合成了4个B环碘取代的白杨素衍生物;实验表明B环碘取代的白杨素衍生物可作为抗癌新候选药物。     

B环三氟甲基取代的白杨素衍生物合成及其抗癌活性

目的研究B环三氟甲基取代白杨素衍生物的体外抗癌活性。方法合成B环三氟甲基取代的白杨素衍生物,并通过MTT法检测其对人急性粒细胞性白血病（HL-60）细胞、人结肠癌（HT-29）细胞和人胃癌（SGC-7901）细胞增殖的抑制作用。结果合成了3个三氟甲基B环取代白杨素衍生物,其中化合物6对HL-60、HT-29细胞增殖的抑制作用最强。结论化合物6（7-羟基-4＇-三氟甲基-黄酮）具有良好的抗癌活性。     

6-碘取代的白杨素衍生物合成及其抗癌活性

目的研究6-碘取代白杨素衍生物的体外抗癌活性。方法合成6-碘取代的白杨素衍生物,并通过MTT法检测其对人急性粒细胞性白血病(HL-60)细胞、人结肠癌(HT-29)细胞和人胃癌(SGC-7901)细胞增殖的抑制作用。结果合成了2个6-碘取代白杨素衍生物。结论6-碘取代白杨素衍生物具有良好的抗癌活性(IC50=1.87~6.09μmol/L)。     

7-烷氧白杨素衍生物合成及其抗癌活性研究、

目的研究7-烷氧白杨素衍生物的体外抗癌活性。方法合成7-烷氧取代的白杨素衍生物,并通过MTT法检测其对人急性粒细胞性白血病（HL-60）细胞、人结肠癌（HT-29）细胞和人胃癌（SGC-7901）细胞增殖抑制作用。结果合成了6个烷氧取代白杨素衍生物,其中化合物2b对HT-29细胞增殖的抑制作用强于5-Fu;化合物2a、2b、2e、2d对HL-60细胞增殖的抑制作用强于5-Fu。结论7-烷氧白杨素衍生物具有潜在的抗癌活性。     

7-二氟亚甲基-5-取代烷氧基黄酮类化合物的合成及其对人胃癌细胞增殖的抑制作用

目的 设计和合成系列7-二氟亚甲基-5-取代烷氧基黄酮类化合物,观察其对人胃癌细胞增殖的抑制作用.方法 以白杨素(chrysin 5,7-二羟基黄酮 ChR)为先导化合物,先选择性地将二氟亚甲基取代ChR的7-羟基,合成化合物ChR-1,再将一系列烷氧基取代ChR-1的5-羟基,依次合成化合物ChR-2...ChR-10.采用MTT比色法测定白杨素及白杨素衍生物对人胃癌SGC-7901细胞增殖抑制作用.结果 合成10种7-二氟亚甲基-5-取代烷氧基黄酮类化合物,并分别进行波谱鉴定,其结果 与设计相符;白杨素及白杨素衍生物对人胃癌细胞株SGC-7901具有不同程度的增殖抑制作用,其中ChR的IC50值为5.83 μmol,在ChR的C-7位引入二氟亚甲基合成的ChR-1的IC50值为3.98 μmol,表明其抑制人胃癌细胞增殖作用增强;进一步在ChR-1的C-5位引入烯丙氧基合成的ChR-10的IC50值为2.18 μmol,其IC50值为所有合成化合物中的最低,表明其抑制SGC-7901细胞增殖作用最强.结论 二氟亚甲基的C-7位取代获得白杨素衍生物的抑制人胃癌细胞增殖活性增强;在此基础上烯丙氧基的C-5位取代获得的7-二氟亚甲基-5-烯丙基白杨素具有更强的抑制人胃癌细胞增殖活性.     

白杨素含膦(磷)衍生物对白血病细胞的增殖抑制作用

目的:探讨新合成的12个白杨素含膦(磷)衍生物在体外对白血病细胞的增殖抑制作用。方法:MTT比色法测定12个白杨素含膦(磷)衍生物对Kasumi-1细胞的增殖抑制情况,筛选出比先导化合物白杨素增殖抑制活性强的衍生物,进一步检测其对Jurkat细胞、NB4细胞、K562细胞、HL60细胞、U937细胞及急性白血病患者骨髓原代细胞的增殖抑制作用。结果:白杨素含膦(磷)衍生物3c、7a的对各种白血病细胞均有明显的增殖抑制作用。结论:新和成的白杨素含膦(磷)衍生物3c、7a有进一步进行抗白血病效应研究的价值。     

含吡啶噻唑并三唑酮衍生物的制备及抗癌活性研究

[目的]设计合成一系列含烟酸的噻唑并三唑酮类化合物,并研究其抗癌活性.[方法]以烟酸为原料,经酰基化、取代和环合等反应合成中间体,再与芳香醛类衍生物合成一系列噻唑并三唑酮类化合物,结构经1 H-NMR确认后采用MTT法测定其抑制HCT116,BEL-7402,L-02细胞增殖活性,以此初步判断该类化合物的抗癌活性.[结果]所合成的几种化合物中5c的抗癌活性最佳,它对BEL-7402和HCT116癌细胞的抑制作用明显强于对正常细胞L-02的抑制作用,对癌细胞和正常细胞具有选择性增殖抑制活性.[结论]B环4位有氟取代且A环为吡啶的噻唑并三唑酮类化合物可作为较好的抗癌药物侯选化合物.     

含吲哚三级醇的合成和抗肿瘤活性评价

目的合成一系列含吲哚环的三级醇,进行抗肿瘤活性测试,考察其结构与活性的关系。方法 (1)制备目标产物:吲哚,1,3-二羰基化合物和2,2,6,6-四甲基哌啶-1-氧自由基(TEMPO)一锅法合成吲哚3-位取代的三级醇;(2)抗癌活性筛选:用四唑盐比色法对制备的3-位取代的吲哚衍生物进行多种癌瘤细胞株的体外细胞毒活性试验。结果共合成14个化合物,通过对人类神经母细胞瘤细胞(SHSY5Y)、食管癌细胞系(109)、乳腺癌细胞(MCF)和胃癌肿瘤细胞(MGC)4种细胞系的测定,发现部分化合物具有不同程度的抗肿瘤活性。其中吲哚衍生物5、6、7对SHSY5Y、109、MCF、MGC 4种肿瘤细胞抑制效果逐渐增强;吲哚衍生物中化合物15对109细胞的IC50达到8.42μmol·L-1。结论丙酰乙酸乙酯衍生7、6-氯及6-溴吲哚衍生物14和15有较好的抗肿瘤活性。     

7-苄氧白杨素的合成及其抗癌活性研究

目的:合成7-苄氧白杨素(7-HBC)并观察7-HBC对人急性粒细胞性白血病(HL-60)细胞、人胃腺癌(SGC-7901)细胞增殖抑制作用.方法:MTY比色法测定7-HBC对人急性粒细胞性白血病(HL-60)细胞、人胃腺癌(SGC-7901)细胞增殖抑制作用.结果:7-HBC对人急性粒细胞性白血病(HL-60)细胞、人胃腺癌(SGC-7901)细胞增殖具有抑制作用,呈浓度依赖性.结论:合成了7-HBC;实验表明7-HBC是一种具有抗癌活性的新候选约物.     

Bim介导白杨素诱导肝癌Hep 3B细胞凋亡

目的:研究白杨素诱导人肝癌Hep 3B细胞凋亡是否涉及上调促凋亡蛋白Bim.方法:体外培养Hep3B细胞.碘化丙啶(PI)染色流式细胞术(FCM)分析细胞凋亡率.细胞凋亡ELISA试剂盒检测细胞组蛋白/DNA碎片.Western blot和小干扰RNA(siRNA)转染用于探索其作用机制.结果:白杨素显著诱导Hep3B凋亡,并上调Bim表达.Bim特异性siRNA能有效拮抗白杨素诱导Hep 3B细胞凋亡作用.结论:白杨素具有诱导人肝癌Hep3B细胞凋亡作用,其作用机制涉及上调Bim表达.     

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.     

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.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.