薏苡仁酯对平阳霉素抑制人鼻咽癌细胞增殖的增效作用

目的 :探讨薏苡仁酯 (Coixenolide,CXL)对平阳霉素 (Pingyangmycin,PYM)抑制人鼻咽癌细胞 CNE- 2 Z增殖的影响。方法 :采用微量细胞克隆形成法检测 CNE- 2 Z对药物的敏感性。结果 :PYM呈剂量依赖性抑制 CNE- 2 Z的增殖 ,ID5 0 =10 - 5 .976 ± 10 - 6 .75 4 mol/L。加入 CXL10 - 7mol/L 和 10 - 6 mol/L均可使 PYM的量效曲线左移 ,ID5 0 降至 10 - 6 .31 5 ±10 - 7.0 5 6 mol/L 和 10 - 6 .71 7± 10 - 7.42 0 mol/L。CXL 还能使 PYM的时效曲线左移 ,缩短该药的作用时间。未发现 CXL 能增强 PYM的急性毒性作用。结论 :CXL选择性地增强 PYM的细胞毒性作用。     

薏苡仁酯对人鼻咽癌细胞裸鼠移植瘤转移的抑制作用

目的：探讨薏苡仁酯（coixenolide,CXL)对实验性鼻咽癌转移的抑制作用。方法：采用裸鼠移植瘤淋巴转移模型观察CXL的药效,MTT法检测该药物对免疫功能的影响。结果：CXL以量效方式抑制人鼻咽癌细胞CNE－2Z的转移,累积ID50为10^-3.282mol/kg,与接种部位“原发瘤”的缩小相一致（累积50=10^-3.387mol/kg)。组织学检查可见,CNE－2Z的侵袭能力降低,与淋巴结转移率下降同步。同时CXL能促进荷瘤小鼠NK细胞活性的恢复。结论：CXL能拮抗CNE－2Z的淋巴道转移,其机理可能与直接抑制及提高免疫力有关。     

薏苡仁酯对人鼻咽癌细胞周期的影响

目的：探讨薏苡仁酯(coixenolide,CXL)对人鼻咽癌CNE-2Z细胞周期的作用。方法：采用微量细胞克隆形成法检测CNE-2Z细胞的增殖能力和对药物的敏感性,用流式细胞仪分析细胞周期时相。结果：CXL以量效方式抑制CNE-2Z细胞的克隆形式,ID50-10^-5.003mol／L。小剂量、短时问使细胞阻滞于S期,大剂量、长时间则停留在G2／M期。结论：CXL通过作用于S期或G2／M期而抑制CNE-2Z细胞生长。     

薏苡仁酯对人鼻咽癌细胞的放射增敏作用

【目的】探讨薏苡仁酯 (CXL)对人鼻咽癌细胞CNE 2Z辐射效应的影响。【方法】以60 Co为放射源 ,采用微量细胞克隆形成法检测CNE 2Z对γ射线的敏感性。【结果】CXL使CNE 2Z的放射—存活曲线左移 ,Do 和Dq 值下降。不同浓度的CXL(10 -7～ 10 -6mol/L)使辐射剂量减少 7 45 %～ 17 31% (在D37水平 ) ,其增敏比 (SER) :Do 比值 1 11～ 1 46 ,Dq 比值1 0 2～ 1 11。【结论】CXL能提高CNE 2Z的放射敏感性。     

端粒酶正义寡核苷酸对鼻咽癌细胞生长的作用

目的：探讨端粒酶正义寡核苷酸对鼻咽癌细胞生长的作用。方法：脂质体介导端粒酶正义，反义及无义寡核苷酸转染鼻咽癌CNE1和CNE2Z细胞，MTT法检测细胞增殖能力，流式细胞仪检测细胞周期。结果：端粒酶正义寡核苷酸与反义寡核苷酸一样中抑制鼻咽癌CNE1和CNE2Z细胞的生长，且呈剂量和时间依赖性。1.5μmol.L^-1正义寡核苷酸与CNE1细胞共培养6，12，24和48h时抑制率分别为16．3％，15．6％，20．2％和26．3％，浓度为4．5μmol.L^-1时抑制率分别为22．5％，21．5％，32．4％和39．9％；在CNE2Z细胞，浓度为1．5μmol.L^-1时抑制率分别为7．7％，25．2％，27．0％和28．8％，浓度为4．5μmol.L^-1时抑制率分别为18．1％，30．1％，32．8％和32．9％；同时流式细胞仪检测到凋亡峰，含量分别为25．3％和19．3％，无义寡核苷酸无此作用。结论：端粒酶正义寡核苷酸可抑制鼻咽癌细胞的生长。     

三氧化二砷与维甲酸联合作用在NB4,MR2细胞系中的体外研究

目的：观察三氧化二砷(As2O3)和全反式维甲酸(ATRA)联合作用对NB4，MR2不同亚型急性早幼粒白血病细胞株，诱导分化、增殖、凋亡的影响。方法:以NB4，MR2为体外模型，利用细胞生长曲线、台盼蓝拒染法、MTT法、NBT、细胞形态Wrigh‘s-Gimesa染色，观察细胞增殖、分化、凋亡的相互作用。结果：NB4细胞株：0．5μmol/L As2O3与10^-6mol/L ATRA对细胞增殖、分化、凋亡呈现拮抗，而0．5μmol/L As2O3与(10^-7--10^-8mol/L)ATRA呈现协同；MR2细胞株：0．5μmol/L As2O3与10^-6mol/L ATRA对细胞增殖、分化、凋亡呈现协同。结论：As2O3与全反式维甲酸协同效应呈现不同细胞、剂量的特异性，MR2细胞株协同效应明显强于NB4细胞株。     

薏芯仁酯对辐射诱导的人鼻咽癌细胞凋亡的促进作用

目的：探讨薏苡仁酯（coixenolide,CXL)对辐射诱导的人鼻咽癌细胞（CNE－2Z凋亡的影响。方法：以60Co为放射源,采用形态学（荧光染色）方法和流式细胞术观察CNE－2Z细胞的凋亡和药物作用,结果：CNE－2Z经照射后,凋亡细胞数增加,并与放射剂量和观察时间成正相关。加入CXL,可使放射量效曲线和时效曲线左移,流式细胞仪分析也得到相似的结果。辐射也诱导正常细胞凋亡,但CXL并没有加强此作用,结论：CXL能选择性地促进射线所致的细胞凋亡。     

CB125等四种合成物对人肝癌细胞体外增殖的抑制作用

目的观察CB125等四种合成物对人肝癌SMMC7721细胞体外增殖的抑制作用。方法采用MTT比色法，观察CB125等四种合成物对人肝癌SMMC7721细胞增殖的影响。结果1．CB125对人肝癌SMMC7721细胞的生长抑制浓度为10^-8～10^-4 mol.L^-1，（与对照组比较，P〈0．01。），抑制率为55％～73％，呈现明显的剂量依赖性；2．CB97对人肝癌SMMC7721细胞的生长抑制浓度为10^-17～10^-4mo1．L^-1（与对照组比较，P〈0．05或P〈0．01。），抑制率为60％～63％；3．JS86对人肝癌SMMC7721细胞的生长抑制浓度为10^-7～10^-4mol．L^-1（与对照组比较，P〈0．01。），抑制率为59％～72％，呈现明显的剂量依赖性；4．JS146对人肝癌SMMC7721细胞的生长抑制浓度为10^-6～10^-14mol．L^-1（与对照组比较，P〈0．05或P〈0．01。），抑制率为60％～65％。结论CB125等四种合成物对人肝癌SMMC7721细胞的生长均有抑制作用。其中CB125抑制作用较明显。     

雌马酚对原代培养小鼠骨髓间充质干细胞增殖及向成骨细胞分化的作用

目的：探讨植物雌激素雌马酚（Equol）对体外原代培养小鼠骨髓间充质干细胞（bone marraw -derived mesenchymal stem cells,BMSCs）增殖及向成骨细胞分化的作用.方法：以无酚红（α-MEM,含活性碳吸附过的10%胎牛血清）培养小鼠BMSCs,同时分别给予雌马酚（10^-8mol/L～10^-6mol/L）、雌马酚（10^-6mol/L）合用雌激素受体（ER）拮抗剂ICI 182 780（10^-7mol/L）;测定[^3H]-甲基胸腺嘧啶掺入率反映细胞增殖情况;测定细胞内碱性磷酸酶活性与钙沉积量反映细胞向成骨细胞分化状态.结果：雌马酚呈剂量依赖性（10^-8mol/L～10^-6mol/L）增加[^3H]-甲基胸腺嘧啶掺入率、细胞内碱性磷酸酶活性与钙沉积量;合用ER拮抗剂ICI182 780（10^-7mol/L）可拮抗雌马酚（10^-6mol/L）刺激BMSCs增殖及向成骨细胞分化的作用.结论：雌马酚可能通过作用于ER而促进骨髓间充质干细胞增殖及向成骨细胞分化.     

薏苡仁酯对顺铂抑制人鼻咽癌细胞增殖的加强作用①

目的探讨薏苡仁酯(coixenolide, CXL)对顺铂(DDP)抑制人鼻咽癌细胞CNE-2Z增殖的影响。方法采用微量细胞克隆形成法检测CNE-2Z对药物的敏感性。结果DDP呈剂量依赖性抑制CNE-2Z的增殖,ID     

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.