活血化瘀中药复方诱导K562细胞凋亡

目的研究活血化瘀复方对人慢性粒细胞白血病细胞株K562细胞增殖、凋亡的影响.方法 通过台盼蓝拒染法活细胞计数,绘制细胞生长曲线.光镜、透射电镜观察细胞形态学变化.流式细胞检测定量观察细胞凋亡及其与药物的关系.结果 活血化瘀复方对K562细胞生长具有抑制作用,并且细胞呈现典型的凋亡形态学改变.流式细胞检测显示药物血清作用6h,K562细胞即已出现凋亡,100 mL·L-1含药血清组细胞凋亡率较50 mL·L-1含药血清组高(13.4±1.3)% vs (7.6±0.9)%, P<0.01.结论 活血化瘀复方具有抑制白血病细胞生长,诱导白血病细胞凋亡的作用,从而为其临床应用提供了理论依据.     

硫化砷诱导K562细胞凋亡中Bcl-2和Bax的表达

目的　研究 Bcl- 2和 Bax在硫化砷诱导的 K5 6 2细胞凋亡中的表达 ,探讨其在硫化砷诱导的细胞凋亡中的作用 .方法　 K5 6 2细胞经一定剂量硫化砷作用特定时间后 ,MTT法检测细胞生长、增殖状态 ,光镜及透射电镜下观察细胞形态及凋亡情况 ,S- P免疫组化染色检测 Bcl- 2、Bax的表达并进行图像分析 .结果　硫化砷对 K5 6 2细胞生长增殖有时间剂量依赖性抑制作用 ;175～ 14 0 0μg· L- 1 硫化砷作用 18～ 14 4 h后 ,K5 6 2细胞出现凋亡细胞的形态学改变 ;免疫组化染色表明 K5 6 2细胞低表达 Bcl- 2蛋白 (A值为 0 .15 2± 0 .0 2 3,阴性对照 A值 0 .10 8± 0 .0 12 ) ,硫化砷处理后对其表达无明显影响 (A值为 0 .138± 0 .0 2 8,P>0 .0 5 ) .硫化砷作用后 ,Bax蛋白的表达量 A值由 0 .2 4 0± 0 .0 13增加到 0 .316± 0 .0 2 1(P<0 .0 1) .结论　硫化砷可抑制 K5 6 2细胞的生长和增殖并诱导其发生凋亡 ,其机制可能与 Bax蛋白上调有关 .     

雄黄对K562细胞端粒酶活性和凋亡的作用

目的 :探讨雄黄对慢性粒细胞白血病细胞株K5 6 2细胞端粒酶活性及凋亡的调节作用和机制 .方法 :MTT法检测细胞增殖力 ;PCR ELISA法测定端粒酶活性 ;流式细胞仪测量细胞周期和细胞凋亡 .结果 :0 .3,0 .6 ,1.5和 3.0mg·L-1雄黄 (72h)在诱导K5 6 2细胞凋亡的同时可显著抑制细胞端粒酶活性和细胞增殖 ,并呈剂量相关 ;1.5 ,3.0mg·L-1雄黄 (72h)可诱导K5 6 2细胞G2 /M期阻滞 .结论 :雄黄诱导K5 6 2细胞凋亡达到抑制细胞生长的作用 ,端粒酶活性下降是雄黄诱导K5 6 2细胞凋亡的机制之一 .由大剂量雄黄诱导的K5 6 2细胞G2 /M期阻滞可能与端粒酶活性显著下降有关     

胆汁酸对人胰腺癌细胞的毒性作用

目的 :通过研究人胆汁中胆汁酸对人胰腺癌PANC 1和MIAPaCa 2细胞株体外增殖和超微结构的影响 ,探讨胆汁酸对人胰腺癌细胞生长抑制作用 .方法 :选用人胰腺癌PANC 1和MIAPaCa 2细胞在不加或添加 1 0mL·L-1 、2 0mL·L-1 、4 0mL·L-1 胆汁的RPMI 1 6 4 0培养液中经过 2 ,4 ,6 ,8d培养后 ,用MTT方法测定胆汁对细胞增殖抑制率 .PANC 1细胞培养 2 4h和 4 8h以后用扫描电镜和透射电镜观察细胞表面和内部超微结构变化 .结果 :PANC 1和MIAPaCa 2细胞在添加胆汁的培养液中增殖受明显抑制 (P <0 .0 1 ) ,其对PANC 1的抑制率为 (2 4 .0 9± 5 .0 5 ) % -(89.6 1± 2 .2 8) % ,对MIAPaCa 2的抑制率为 (1 6 .71±1 0 .5 1 ) % - (78.5 5± 6 .5 9) % .PANC 1细胞在含胆汁培养液中培养后 ,细胞表面微绒毛变短变疏 ,细胞内线粒体、粗面内质网发生空泡变性 .结论 :胆汁中的胆酸对人胰腺癌细胞增殖有抑制作用 ,其抑制机制在于胆酸的细胞膜毒性作用     

有丝分裂阻滞剂Nocodazole诱导HL-60细胞的凋亡

目的　以细胞有丝分裂阻滞剂 Nocodazole为诱导物 ,诱导白血病细胞系 HL- 6 0细胞凋亡 ,并进行形态学和生物化学指标的检测 .方法　首先 ,观察 1nmol· L- 1 ～ 10μmol· L- 1递增浓度的 Nocodazole对 HL- 6 0细胞的作用 ,然后选取浓度 5 0 0 nm ol· L- 1 诱导凋亡 ,通过 HE染色、荧光染色、DNA片段化 (DNA fragmentation)及流式细胞仪分析研究其凋亡的特征 .结果　 5 nm ol· L- 1～ 10 μm ol· L- 1的Nocodazole都可以诱导 HL - 6 0细胞的凋亡 .在 5 0 0 nmol·L- 1 的 Nocodazole作用下 ,HE染色、荧光染色显示从 6 h开始即出现胞质嗜碱性增强、细胞核固缩断裂、凋亡小体形成等凋亡的形态学特征性改变 .基因组 DNA电泳检测显示从 8h开始出现微弱的梯状 DNA.流式细胞仪检测了不同时间点的细胞周期显示了 G2期阻滞 ,未能检测到亚二倍体峰 .结论　我们用 Nocodazole不仅诱导了典型的白血病细胞凋亡 ,而且在 G2 /M期阻滞与凋亡之间建立了联系 ,可用于凋亡机制或细胞周期调控与凋亡关系的研究     

脐血CD3AK细胞诱导肿瘤细胞凋亡的研究

目的 :探讨脐血CD3AK细胞诱导K5 6 2、HL 6 0细胞凋亡的作用。方法 :用细胞形态学观察、DNA琼脂糖电泳、原位末端标记法检测K5 6 2、HL 6 0细胞。结果 :K5 6 2细胞自然凋亡率 (3.5 0± 0 .97) % ,脐血CD3AK诱导的K5 6 2细胞凋亡率 (2 7.40± 4.6 4) % ;HL 6 0细胞自然凋亡率 (4.10± 1.10 ) % ,脐血CD3AK诱导的HL 6 0细胞凋亡率(2 1.10± 3 .82 ) % ,均有显著性差异。结论 :脐血CD3AK细胞能诱导K5 6 2、HL 6 0细胞凋亡 ,而且诱导K5 6 2凋亡的能力更强。     

解毒化瘀药对白血病HL60/ADR耐药细胞凋亡影响的研究

目的:探讨解毒化瘀药含药血清对白血病HL60/ADR耐药细胞凋亡的影响.方法:应用流式细胞仪检测解毒化疼药含药血清处理后的各组HL60/ADR细胞凋亡的情况.结果:解毒化瘀药中药复方能促进白血病耐药细胞HL60/ADR早期凋亡率,并呈浓度相关性.结论:解毒化瘀药含药血清能够促进HL60/ADR细胞凋亡.     

表皮生长因子和牛垂体提取物对无血清培养的人垂体腺瘤细胞的作用

目的　观察表皮生长因子 (EGF)和牛垂体提取物(BPE)在人垂体腺瘤细胞培养中的作用 .方法　将不同浓度的EGF和BPE作用于体外培养的人垂体腺瘤细胞 ,用MTT及3 H TdR掺入法测定细胞增殖及DNA代谢的变化情况 ,并用TUNEL和台盼蓝染色观察细胞凋亡和死亡情况 .结果　不同浓度的EGF和不同浓度的BPE对体外无血清培养的人垂体腺瘤细胞均表现出明显的刺激作用 ,并呈一定的剂量效应关系 .同时 ,EGF和BPE均可降低体外无血清培养的人垂体腺瘤细胞的死亡及凋亡数量 .以含 10 0mL·L-1血清的DMEM培养液组的A490nm 值和cpm值为 10 0 % ,无血清的DMEM组的A490nm值和cpm值为 (8.6± 5 .2 ) %和 (9.4±5 .4 ) % ;含 2 0mg·L-1EGF和 1mg·L-1BPE的无血清DMEM培养液组的A490nm 值和cpm值为 (98.7± 5 .3) %和(10 2 .4± 5 .5 ) % ,而凋亡指数 (AI)仅为 3.5± 0 .9,提示EGF和BPE之间具有协同作用 .结论　EGF和BPE具有明显改善人垂体腺瘤细胞体外无血清培养条件的作用 ,EGF和BPE对离体培养的垂体腺瘤细胞增殖具有促进作用     

中华眼镜蛇毒组分CⅡ诱导多药耐药白血病细胞K562/A02凋亡

目的 :研究中华眼镜蛇毒组分CⅡ (FCⅡNNAV)对多药耐药白血病细胞K5 6 2 /A0 2的抑制作用及机制。方法 :应用MTT法、荧光显微镜法、流式细胞仪法 ,观察FCⅡNNAV单用及联合阿霉素 (ADM)体外对K5 6 2 /A0 2的毒性作用、凋亡作用及对Bcl 2表达的影响。结果 :FCⅡNNAV单用对耐药K5 6 2 /A0 2及敏感K5 6 2细胞均有抑制作用 ,IC50 分别为 (0 .75± 0 .0 1) μg/mL和 (0 .6 7± 0 .11) μg/mL。FCⅡNNAV联合ADM体外对细胞K5 6 2 /A0 2有较强的协同抑制作用。荧光显微镜、流式细胞仪检测FCⅡNNAV能明显诱导细胞K5 6 2 /A0 2凋亡 ,凋亡率呈剂量依赖性增加。流式细胞仪检测发现FCⅡNNAV能使细胞K5 6 2 /A0 2的Bcl 2表达下调 ,表达率呈剂量依赖性减少。结论 :FCⅡNNAV对细胞K5 6 2 /A0 2及细胞K5 6 2均有较强的抑制作用 ,且抑制作用与剂量呈正相关 ,并与抗癌药ADM有较强协同作用。FCⅡNNAV能明显诱导K5 6 2 /A0 2细胞凋亡 ,其机制可能与Bcl 2表达下调有关。     

汉防己甲素联合屈洛昔芬逆转K562/A02细胞耐药的研究

目的 :探讨汉防己甲素 (Tet)联合屈洛昔芬 (Drol)对耐药细胞系K5 62 /A0 2的逆转作用。方法 :采用四甲基偶氮唑盐比色法 (MTT法 )测定柔红霉素 (DNR)的细胞毒性。结果 :1μmol·L-1Tet、5 μmol·L-1Drol均能增加DNR对耐药细胞系K5 62 /A0 2的细胞毒作用 ,半数抑制量 (IC50 )分别为 (7.2 8± 2 .0 6)mg·L-1和 (7.5 8± 3 .44 )mg·L-1,逆转倍数分别为 2 .94和2 .82倍。两药联合应用后作用明显增强 ,IC50 为 (1.66± 0 .41)mg·L-1,逆转倍数达 12 .9倍。结论 :单独应用Tet、Drol可部分逆转K5 62 /A0 2细胞的耐药性 ,两药联用具有明显协同效应。     

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.