环孢菌素A对白血病细胞株HL60和HL60／DNR P糖蛋白功能的影响

目的 克服白血病细胞的多药耐药性（ＭＤＲ）。方法 用流式细胞仪分析单抗ＵＩＣ２标记ＨＬ６０、ＨＬ６０／ＤＮＲ Ｐ糖蛋白（Ｐｇｐ）的表达，了解细胞株摄取和滞留荧光素Ｒ１２３的功能，并观察环孢菌素Ａ（ＣｓＡ）和丙磺舒（Ｐｂｃ）对细胞株上Ｐｇｐ的逆转作用。结果 ＨＬ６０／ＤＮＲ高度表达Ｐｇｐ，且可被ＣｓＡ逆转，使细胞内荮物浓度达到敏感细胞株水平。Ｐｂｃ不能逆转ＨＬ６０／ＤＮＲ。结论 ＣｓＡ对ＨＬ６０／Ｄ     

环孢菌素A对白血病细胞株HL60和HL60/DNRP糖蛋白功能的影响

克服白血病细胞的多药耐药性（ＭＤＲ）。方法用流式细胞仪分析单抗ＵＩＣ２标记的ＨＬ６０、ＨＬ６０／ＤＮＲＰ糖蛋白（Ｐｇｐ）的表达，了解细胞株摄取和滞留荧光素Ｒ１２３的功能，并观察环孢菌素Ａ（ＣｓＡ）和丙磺舒（Ｐｂｃ）对细胞株上Ｐｇｐ的逆转作用。结果ＨＬ６０／ＤＮＲ高度表达Ｐｇｐ，且可被ＣｓＡ逆转，使细胞内药物浓度达到敏感细胞株水平。Ｐｂｃ不能逆转ＨＬ６０／ＤＮＲ。结论ＣｓＡ对ＨＬ６０／ＤＮＲ的逆转作用可能是对其细胞膜上Ｐｇｐ的抑制     

阳离子脂质体增加造血系统恶性肿瘤细胞株对寡核苷酸G3139的摄入

目的观察阳离子脂质体DOSPER介导或Bcl-2反义寡核苷酸G3139直接作用时,造血系统恶性肿瘤细胞株对G3139的摄入,为阳离子脂质体和反义寡核苷酸的进一步应用提供依据.方法利用异硫氰酸荧光素标记的G3139,流式细胞仪(FCM)测定造血系统恶性肿瘤细胞株HL60、K562、U937、CA46和CEM细胞内的平均荧光强度.结果 G3139直接作用于细胞时,细胞内荧光强度U937>HL60>CA46>K562>CEM(P<0.05);DOSPER介导转染时,各细胞内的荧光强度均显著高于直接转染时(P<0.01),而且当DOSPER/G3139(μg/μg)为2～3∶1时,转染效率最佳,但此时各细胞间细胞内平均平均荧光强度无明显的差别(P>0.05).结论不同造血系统恶性肿瘤细胞株对G3139的摄入不同,阳离子脂质体DOSPER可普遍提高细胞对G3139的摄入.     

rhTGF—β1对人白血病细胞系诱导分化的超微结构研究

以ＨＬ６０、Ｕ９３７细胞系为体外模型，应用透射电子显微镜技术，观察了重组人转化生长因子β１（ｒｈＴＧＦ－β１）对上两种人白血病细胞系超微结构的影响。结果显示Ｕ９３７细胞对ｒｈＴＧＦ－β１的反应比ＨＬ６０细胞敏感，经ｒｈＴＧＦ－β１６ｍｇ／ｍｌ作用４天后，Ｕ９３７细胞之胞核不规则，核仁减少或消失。出现较多的粗面质网，胞浆中可见吞噬小体，进一步证实ｒｈＴＧＦ－β１ＳＫ可诱导Ｕ９３７细胞向成熟分化，分化     

反义寡核苷酸对HL60细胞c-myc基因表达的抑制和诱导分化作用

目的研究ｃｍｙｃ反义寡核苷酸对ＨＬ６０细胞中ｃｍｙｃ基因的表达及ＨＬ６０细胞分化的影响。方法采用针对原癌基因ｃｍｙｃ的ｍＲＮＡ５’非翻译区的一个１８ｂｐ的反义寡核苷酸５’ｄ（ＣＴＴＣＴＣＧＡＧＧＣＡＧＧＡＧＧＧ）３’与人早幼粒白血病细胞系ＨＬ６０细胞共培养５ｄ，检测ｃｍｙｃｍＲＮＡ量的变化及其对ＨＬ６０细胞分化的影响。结果用ＮｏｒｔｈｅｒｎＢｌｏｔ检测出ＨＬ６０细胞ｃｍｙｃｍＲＮＡ的含量减少；细胞形态学变化以及非特异性酯酶（ＮＳＥ）染色、硝基四氮唑蓝（ＮＢＴ）还原试验均提示ＨＬ６０细胞出现了分化，部分细胞向粒细胞方向分化，部分细胞向单核细胞方向分化。结论ｃｍｙｃ反义寡核苷酸能够抑制ｃｍｙｃ基因的表达并能诱导ＨＬ６０细胞分化。     

白血病细胞株HL60和HL60/DNR的多药耐药性

目的研究白血病细胞的多药耐药性（ＭＤＲ）。方法用ＲＴ－ＰＣＲ方法检测ＨＬ６０，ＨＬ６０／ＤＮＲＭＤＲ１的ｍＲＮＡ表达，用流式细胞仪分析单抗ＵＩＣ２标记的细胞株Ｐ糖蛋白（Ｐｇｐ）的表达，了解它们摄取和滞留荧光素Ｒ１２３的功能。结果ＨＬ６０／ＤＮＲ在ｍＲＮＡ水平高度表达ＭＤＲＩ，在蛋白质水平高度表达Ｐｇｐ，功能性试验中细胞内Ｒ１２３最终浓度ＨＬ６０为ＨＬ６０／ＤＮＲ的５０倍。结论ＨＬ６０／ＤＮＲ为典型的表达ＭＤＲ１的细胞株     

rhTGF－β_1对人白血病细胞系诱导分化的超微结构研究

以ＨＬ＿（６０）、Ｕ＿（９３７）细胞系为体外模型，应用透射电子显微镜技术，观察了重组人转化生长因子β＿１（ｒｈＴＧＦ－β＿１）对以上两种人白血病细胞系超微结构的影响，结果显示：Ｕ＿（９３７）细胞对ｒｈＴＧＦ－β＿１的反应比ＨＬ＿（６０）细胞敏感，经ｒｈＴＧＦ－β＿１６ｎｇ／ｍｌ作用４天后，Ｕ＿（９３７）细胞之胞核不规则，核仁减少或消失，出现较多的粗面内质网，胞浆中可见吞噬小体，进一步证实ｒｈＴＧＦ－β＿１可诱导Ｕ＿（９３７）细胞向成熟分化，分化途经仍为单核巨噬细胞系。     

蝎毒抗癌多肽对4种人肿瘤细胞系的作用

目的：观察蝎毒抗癌多肽（ａｎｔｉｎｅｏｐｌａｓｔｉｃｐｏｌｙｐｅｐｔｉｄｅｆｒｏｍＢｕｔｈｕｓＭａｔｅｎｓｉｖｅｎｏｍ,ＡＰＢＭＶ）对人肿瘤细胞生长的抑制作用。方法：采用噻唑蓝（ＭＴＴ）法、台盼蓝拒染法和集落形成观察为指标,丝裂霉素Ｃ（ＭＭＣ）为阳性对照药品,以ＡＰＢＭＶ４ｍｇ／Ｌ,８ｍｇ／Ｌ,１２ｍｇ／Ｌ和１６ｍｇ／Ｌ处理４种人肿瘤细胞（人早幼粒白血病细胞株ＨＬ６０、人肝细胞癌细胞株ＳＭＭＣ７７２１、人低分化鼻咽上皮癌细胞株ＣＮＥ２Ｚ和人胃癌细胞株ＭＧＣ８０３）,选用不同的作用时间点,分别观察ＡＰＢＭＶ对上述细胞的影响。结果：ＡＰＢＭＶ对ＨＬ６０、ＳＭＭＣ７７２１、ＣＮＥ２Ｚ和ＭＧＣ８０３细胞均有显著的细胞毒性作用,ＨＬ６０和ＳＭＭＣ７７２１比后两者显示出更好的量效关系（ｒ＝０．９８２８,ｒ＝０．９８６３,Ｐ＝０．０２）。ＡＰＢＭＶ处理ＨＬ６０和ＳＭＭＣ７７２１细胞２４ｈ,４８ｈ和９６ｈ后,两种细胞的生长均受到抑制（Ｐ＜０．０５,Ｐ＜０．０１）,并有显著的剂量效应关系;处理ＳＭＭＣ７７２１细胞２４ｈ,４８ｈ和９６ｈ时ＡＰＢＭＶ的ＩＣ５０分别是１５．８７ｍｇ／Ｌ、１３．０５ｍｇ／     

凋亡相关蛋白BCL—2与白血病化疗药物敏感性的研究

研究急性白血病细胞ＢＣＬ－２表达及其与体外化疗药物敏感性的关系。方法：采用Ｗｅｓｔｅｒｎｂｌｏｔｉｎｇ技术和四甲基偶氮唑盐比色法，分别检测ＨＬ－６０、Ｕ９３７细胞株和６例急性细胞白血病细胞ＢＣＬ－２表达水平及体外对柔红霉素的敏感性。结论细胞系和白血病原代细胞的ＢＣＬ－２高表达伴低药敏与ＡＭＬ疗效有关     

磷脂酶A_2抑制剂的研究──粉防己碱对U937细胞磷脂酶A_2和前列腺素生成的影响

探讨粉防己碱对培养的Ｕ９３７细胞中花生四烯酸瀑布系统产生前列腺素的影响。以Ｕ９３７细胞株为模型,加入内毒素（ＬＰＳ）处理,以及粉防己碱预处理后再加入ＬＰＳ处理,观察Ⅱ－型磷脂酶Ａ２（Ⅱ—ＰＬＡ２）、胞液型磷脂酶Ａ２－（ｃＰＬＡ２）和环氧合酶－２（ＣＯＸ—２）以及前列腺素Ｅ２（ＰＧＥ２）的变化。结果发现ＬＰＳ可刺激Ｕ９３７细胞中Ⅱ－ＰＬＡ２、ｃＰＬＡ２和ＣＯＸ—２以及ＰＧＥ２的产生增加,粉防己碱则可不同程度地抑制它们的增高。粉防己碱具有降低内毒素引发的Ⅱ—ＰＬＡ２、ｃＰＬＡ２和ＣＯＸ—２以及ＰＧＥ２产生的作用。     

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.