K562及K562／VCR对长春新碱诱导调亡的敏感性

目的 研究人类白血病细胞株Ｋ５６２长春新碱的Ｋ５６２变异株Ｋ５６２／ＶＣＲ对长春新碱诱导凋亡的敏感性的差异,以探讨抗凋亡在白血病多药耐药性（ＭＤＲ）中作用。方法 将Ｋ５６２及Ｋ６２／ＶＣＲ分别用浓度为０、０．００１、０．０１０μｇ／ｍｌ的长春新碱诱导２４ｈ,用流式细胞仪ＰＩ染色法、ＴＵＮＥＬ法及ＥＬＩＳＡ法分别进行细胞凋亡检测。结果 经浓度为０、０．００１μｇ／ｍｌ长春新碱诱导后,Ｋ５６２细胞凋亡     

K562及K562/VCR对长春新碱诱导凋亡的敏感性

研究人类白血病细胞株Ｋ５６２及耐长春新碱的Ｋ５６２变异株Ｋ５６２／ＶＣＲ对长春新碱诱导凋亡的敏感性的差异,以探讨抗凋亡在白血病多药耐药性（ＭＤＲ）中的作用。方法将Ｋ５６２及Ｋ５６２／ＶＣＲ分别用浓度为０、０．００１、０．０１０μｇ／ｍｌ的长春新碱诱导２４ｈ,用流式细胞仪ＰＩ染色法、ＴＵＮＥＬ法及ＥＬＩＳＡ法分别进行细胞凋亡检测。结果经浓度为０、０．００１μｇ／ｍｌ长春新碱诱导后,Ｋ５６２细胞凋亡率分别为（４．１０±０．１７）％、（１３．３０±３．７４）％,而Ｋ５６２／ＶＣＲ细胞凋亡率分别为（３．６１±０．６９）％、（９．０６±４．２４）％,统计学显示两者差异无显著性（ｎ＝３,Ｐ＞０．０５）。而长春新碱浓度达０．０１０μｇ／ｍｌ时,Ｋ５６２及Ｋ５６２／ＶＣＲ细胞凋亡率分别为（３６．４８±６．７０）％、（１０．４５±３．７１）％,两者差异有极显著意义（ｎ＝３,Ｐ＜０．０１）。ＴＵＮＥＬ及ＥＬＩＳＡ检测结果与此类似。结论Ｋ５６２及Ｋ５６２／ＶＣＲ对长春新碱诱导细胞凋亡的敏感性不同,耐药细胞对药物诱导细胞凋亡的抵抗性增强可能在白血病ＭＤＲ发生中有重要作用。     

莪术注射液抑制K562细胞增殖及诱导其凋亡的研究

目的：探寻新的抗白血病药物。方法：采用ＭＴＴ法,以柔红霉素（ＤＮＲ）、阿糖胞苷（Ａｒａ－Ｃ）和羟基脲作对照,了解莪术注射液对Ｋ５６２细胞增殖抑制作用;通过流式细胞仪检测和ＤＮＡ凝胶电泳,观察莪术注射液诱导Ｋ５６２细胞凋亡的情况。结果：莪术注射液对Ｋ５６２细胞不仅具有强大的增殖抑制作用,功效明显强于对照ＤＮＲ、Ａｒａ－Ｃ和羟基脲;而它更主要的作用是诱导Ｋ５６２细胞不仅具有强大的增殖抑制作用,功效明显     

黄花夹竹桃甙对K562细胞的杀伤作用

目的：选用黄花夹竹桃甙（ＴＳ）作为Ｎａ~＋－Ｋ~＋－ＡＴＰ酶的抑制剂，观察其对体外培养的Ｋ５６２细胞的杀伤作用，初步探讨其作用机制。方法：台盼蓝排染法测定ＴＳ对Ｋ５６２细胞的杀伤作用；８６Ｒｂ示踪法测定ＴＳ对Ｋ５６２细胞Ｎａ~＋－Ｋ~＋－ＡＴＰ酶活性的抑制作用；透射电镜观察ＴＳ对Ｋ５６２细胞形态学的改变。结果：低剂量的ＴＳ（０．００１～０．ｌμｇ／ｍｌ）在体外能够显著杀伤Ｋ５６２细胞，并有剂量依赖性。此种作用需经ＴＳ持续作用８ｈ以上才表现出来，并迅速增强。经０．１μｇ／ｍｌＴＳ处理１２ｈ的Ｋ５６２细胞，其生长受到显著的抑制。体外杀伤细胞浓度的ＴＳ作用１ｈ，对Ｋ５６２细胞的Ｎａ~＋Ｋ~＋－ＡＴＰ酶有明显的抑制作用。电镜观察发现，ＴＳ作用２４ｈ后，Ｋ５６２细胞出现非特异性的形态学改变，并发生溶解性坏死。结论：ＴＳ对Ｋ５６２细胞表现出很强的杀伤作用，其机制可能是抑制膜上Ｎａ~＋－Ｋ~＋－ＡＴＰ酶的活性，引起水盐代谢紊乱和营养物质摄取障碍。     

肿瘤患者外周血单个核细胞诱导的CD_3AK细胞体外抗肿瘤作用的初步观察

采用抗ＣＤ３单抗（１０μｇ／ｍｌ）联合ＩＬ－２（５０Ｕ／ｍｌ）诱导肿瘤病人外周血单个核细胞成为ＣＤ３ＡＫ细胞，并观察其体外增殖及抗肿瘤作用，结果显示：肿瘤病人的ＮＫ活性显著低于正常人，但其ＣＤ３ＡＫ细胞体外杀伤Ｋ５６２细胞的细胞毒活性与正常人比较无明显差异（Ｐ＞００５）。本研究初步表明：由肿瘤病人外周血单个核细胞诱导的ＣＤ３ＡＫ细胞，可作为过继免疫治疗的效应细胞进行自身淋巴细胞治疗     

腺病毒介导胸苷激酶基因治疗肝癌的实验研究

目的：观察腺病毒介导胸苷激酶基因联合抗病毒药物对人肝癌细胞（ＨｅｐＧ２）的杀伤作用。方法：利用腺病毒载体将单纯疱疹病毒胸苷激酶基因（ＨＳＶ－ＴＫ）导入体外培养的ＨｅｐＧ２中,再加入羟基无环鸟苷（ＧＣＶ）,观察其对ＨｅｐＧ２细胞的杀伤效应。结果：在感染复数（ＭＯＩ）小于１００或ＧＣＶ浓度小于４００ｕｇ／ｍｌ范围内,单独应用载体或ＧＣＶ,对培养细胞的形态与存活率均无明显影响。当两者合并应用时,ＧＣＶ在     

LAK细胞对白血病多药耐药细胞的杀伤作用

目的：研究淋巴因子激活的杀伤（ＬＡＫ）细胞对白血病多药耐药细胞的杀伤效应。方法：采用改良的四甲基偶氮唑盐（ＭＴＴ）比色法检测ＬＡＫ细胞对白血病多药耐药细胞株Ｋ５６２／ＶＣＲ的杀伤率,并与敏感株Ｋ５６２相比较。结果：ＬＡＫ细胞对Ｋ５６２／ＶＣＲ细胞的杀伤率明显高于对Ｋ５６２细胞的杀伤率,并且当效靶比为４０：１时,这种杀伤率最高。     

硫化砷诱导K562细胞凋亡

研究硫化砷（Ａｓ２Ｓ２）对Ｋ５６２细胞凋亡的诱导作用。采用Ｋ５６２细胞体外培养，应用流式细胞仪（ＦＣＭ）分析细胞周期，鉴定凋亡细胞，检测线粒体膜蛋白Ａｐｏ２．７的表达。结果显示：Ａｓ２Ｓ２能够诱导Ｋ５６２细胞凋亡，使细胞周期中的Ｓ期细胞减少，Ｇ２／Ｍ期细胞升高，提示：Ａｓ２Ｓ２具有促凋亡效应。     

姜黄素对人类红白血病细胞（K562）的抑制及诱导分化作用

用人类红白血病细胞（Ｋ５６２）为通过细胞计数、ＭＴＴ法测定,形态学观察、ＮＢＴ还原试验及联七胺反应等方法检测了不同浓度姜黄素对体外人Ｋ５６２细胞的作用。结果表明,姜黄素对Ｋ５６２细胞有明显的抑制作用。随浓度增加,抑制作用逐渐增强,形态学观察可见轻微诱导分化作用。鉴于姜黄素对人类红白血病细胞兼有轻微诱经和增殖抑制人艇,提示姜黄素有可能应用于人类红白血病的治疗。     

强心甙类药对长春新碱抗肿瘤活性的协同作用

目的 探讨强心甙类药物洋地黄毒甙或地高辛对长春新碱抗肿瘤活性的协同作用。方法 台盼蓝排染法测定药物对Ｋ５６２细胞的杀伤作用；用小鼠肝癌腹水瘤Ｈ２２模型，观察药物对小鼠生命延长率的影响。 结果 洋地黄毒甙、地高辛能显著杀伤Ｋ５６２细胞，并有剂量依赖性，ＩＣ５０分别为０．０５９，０．１０１μｇ／ｍｌ；低浓度洋地黄毒甙或地高辛对低浓度长春新碱杀伤Ｋ５６２细胞呈现增强作用（ｑ〉１）。洋地黄毒甙或地高辛对长     

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.     

Development on Adjustable Calibration Marker for Shock Wave Focus

Shock wave lithotripsy （SWL） is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it＇s difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.     

Study on the TCM Pathogenesis of Angiopathic Complications of Type II Diabetes

Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.     

Leptin, Ghrelin and TNF-α before and after Hypo-caloric Traditional Chinese Diet and Auricular Acupuncture

INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5     

Relationship between Dysglycemia and Carotid Atherosclerosis in Tibetan Population

People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

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.