﹣80°C冰箱长期冻存外周血造血干细胞研究

目的对外周血造血干细胞活性在深低温（-80℃）下保存3年的效果进行评价。方法对30例经MCS＋血细胞分离机采集所得的外周血造血干细胞加入细胞冻存保护剂分别予以-196℃液氮冻存和-80℃冰箱深低温冻存,并检测和比较冻存前后单个核细胞（mononuclear cells,MNC）、CD34＋细胞的计数及细胞回收率,细胞活性。结果 -80℃冰箱冻存组MNC、CD34＋细胞冻存3年与冻存前比较差异均无统计学意义冻存3年后MNC回收率与冻存1年后比较差异无统计学意义。3年后-80℃冰箱冻存组干细胞与-196℃液氮冻存组比较,差异无统计学意义。结论 -80℃冰箱深低温保存法快速、简便、安全、费用低廉,可有效用于外周血造血干细胞长期保存。     

新改良外周血造血干细胞冷冻技术的临床应用观察

目的为临床自体造血干细胞移植提供一种简单易行、安全有效、成本低廉的干细胞冻存方法。方法 10份外周造血干细胞以二甲基亚砜、自体血浆作保护剂在-80℃条件下直接冻存,冻存前后检测外周血干细胞的活性、单个核细胞(MNC)数和CD34+细胞数及回收率。结果冻存前后外周血干细胞活性单个核细胞(MNC)数和CD34+细胞数及回收率满足移植要求,输注后造血均重建。结论二甲基亚砜、自体血浆作保护剂在-80℃条件下直接冻存干细胞是一种简便、可靠、安全、成本低的外周造血干细胞冻存方法。     

-80℃简易冻存外周造血干细胞临床应用观察

目的:探索一种简便易行、安全有效、成本低的干细胞的冻存方法。方法:6份外周造血干细胞以1640培养液和二甲基亚砜、10%白蛋白作保护剂在-80℃条件下直接冻存,检测冻存前后外周血干细胞的活性、单个核细胞(MNC)数和CD34+细胞数及回收率。结果:冻存前后外周血干细胞活性、MNC和CD34+细胞的数量及回收率满足移植要求,输注后造血均重建。结论:1640培养液和二甲基亚砜、10%白蛋白作保护剂在-80℃条件下直接冻存干细胞是一种简便、可靠、安全、成本低的外周血干细胞冻存方法。     

-80℃冻存外周血干细胞21例分析

目的：探索一种操作简单、干细胞回收率和存活率高、成本低廉的外周血浆存方法。方法：采用终浓度为5％二甲基亚砜（DMSO），3％羟乙基淀粉（HES）和4％人血白蛋白（HSA）的干细胞保护剂直接－80℃冰箱冰存外周血干细胞，并检测不同时相点（1、3、6、9、12个月）外周血干细胞的细胞活性，单个核细胞（MNC）和CFU－GM、CD34^ 细胞的回收率。结果：随着保存时间的延长，观察到12个月时，冻存干细胞的细胞活性、MNC回收率和CD34^ 细胞回收率分别为86．46％、88．58％、87．65％，与冻存1个月相比无统计学差异（P＞0．05），足以保障干细胞移植后造血重建的成功。结论：5％DMSO，3％HES和4％HAS作为干细胞冷冻保护剂直接－80℃冰箱冻存外周血干细胞是一种简便、实用、安全、可靠、成本低的外周血干细胞冻存方法，具有广泛的临床推广价值。     

-80℃冻存外周血造血干细胞的应用研究

目的:探求一种操作简便实用、造血干细胞回收率和存活率高、成本低的外周血造血干细胞的冻存方法。方法:CP-1和5%白蛋白作保护剂在?80℃条件下直接冻存,并检测冻存前后外周血干细胞的活性,单个核细胞(MNC)和CFU-GM、CD34 细胞的回收率。结果:冻存前后外周血干细胞活性,单个核细胞(MNC)和CFU-GM、CD34 细胞的回收率无明显差异(P>0.05),输注后造血均重建。结论:CP-1和5%白蛋白作保护剂在?80℃条件下直接冻存干细胞是一种简便、可靠、安全、成本低的外周血干细胞冻存方法,具有广泛的临床推广价值。     

自体外周血干细胞移植治疗难治性类风湿关节炎一例

目的 探讨自体外周血干细胞移植（APBSCT）及CD34^ 细胞分选治疗难治性类风湿关节炎（RA）的疗效、安全性及移植后免疫重建过程。方法 对1例RA患者进行APBSCT及CD34^ 细胞分选治疗。干细胞动员方案为环磷酰胺（CY）及粒细胞集落刺激因子（G－CSF）,将采集物进行CD34^ 细胞分造,－80℃冰箱冻存。经CY与抗胸腺免疫球蛋白（ATG）预处理后进行干细胞回输,并应用G－SCF协助造血重建,移植后观察临床表现及实验室指标的变化。移植前后进行淋巴细胞表型分析,监测免疫重建过程。结果 对患者成功地施行了动员及预处理方案,干细胞回输反应良好,移植后随访12个月,患者关节肿瘤完全消失,生活质量明显改善,血沉、C－反应蛋白降至正常,类风湿因子转阴;免疫重建过程正在进行。结论 APBSCT并CD34^ 细胞分选治疗RA安全性好,中短期疗效显著,移植后免疫重建过程尚需进一步随访观察。     

人外周血造血干细胞低温保存方法的实验研究

目的：观察－196℃程控降温冻存方法和－80℃直接冻存方法中单用二甲基亚砜（DMSO）与DMSO加羟乙基淀粉（HES)两种浆存保护剂对人外周血造血干细胞体外冻存的效果。方法：对5例经Cs-3000Plus血细胞分离机分离所得的外周血单个核细胞分别加入10％DMSO和5％DMSO加6％HES冻存保护剂。并分别以－196℃程控降温冻存方法和－80℃直接冻存方法保存15d，以快速复温法复苏细胞，检测冻存前后细胞活率及有核细胞、CD34^ 细胞、粒单系集落形成单位（CFU－GM）、红系集落形成单位（CFU－E）回收率。结果：在－196℃程控降温冻存方法时，单用DMSO和DMSO加HES两组在细胞活率、有核细胞回收率、CD34^ 细胞回收率、CFU－E回收率方面差别无显著性意义；在－80℃直接冻存方法时，MDSO加HES组有核细胞回收率、CFU－E回收率高于单用DMSO组。结论：－196℃程控降温冻存时10％DMSO和5％DMSO加6％HES两种冻存保护剂均可有效应用于外周血造血干细胞保存；一80℃直接冻存方法适合5％DMSO加6％HES冻存保护剂，也可有效用于外周血造血干细胞保存。     

非程控降温-80℃冷冻保存外周血干细胞的活性观察

目的 :观察非程控降温 - 80℃冷冻保存外周血造血干 /祖细胞的活性 ,为临床自体外周血造血干细胞移植提供方便、有效的冻存方法。方法 :常规方法动员外周血干细胞 ,CS - 30 0 0PLUS血细胞分离机采集干细胞 ,以 10 %二甲亚砜、10 %人AB型血清、RPM116 4 0培养基为冷冻保护剂 ,2ml/管冻存干细胞 ,按第 1、2、4周和第 2、3月顺序复苏细胞并测定GM -CFU集落数、台盼兰拒染率和CD34 细胞百分率。结果 :用该方法冷冻保存的外周血干细胞 ,在 4周内其细胞活性与采集时的细胞活性无明显差别 (P >0 .0 5 ) ,冻存至 2～ 3个月时细胞活性则明显降低 (P <0 .0 5 )。结论 :应用血清和DMSO等作为冷冻保护剂、- 80℃直接冻存的外周血干细胞 ,在 4周内复苏后其细胞活性无明显降低。     

异基因外周血造血干细胞移植后细胞免疫的重建

目的 研究异基因外周血造血干细胞移植后细胞免疫的重建，探讨免疫治疗应用于造血干细胞移植后的残留病灶清除，并将其与化疗有机结合，以延长患者无病生存率的方法。方法 采用流式细胞仪，检测14例异基因外周血造血干细胞移植患者移植前后外周血中T、B、NK细胞的含量。结果 异基因外周血造血干细胞移植后1月内，患者血循环中CD3^＋细胞明显减少，至移植后3月逐渐恢复至正常；CD3^＋CD4^＋细胞移植后持续减少，至移植后6月甚至更长时间后才逐渐恢复；CD3^＋CD8^＋细胞于移植后1月内很快恢复。CD19^＋细胞于移植后l～3月降低，移植后3～6月逐渐恢复。NK细胞于移植后2月恢复，较T或B淋巴细胞恢复速度快。结论 异基因外周血造血干细胞移植后3月T细胞才逐渐恢复至正常水平；B细胞于移植后1～3月绝对及相对计数降低，移植后3～6月逐渐恢复；NK细胞于移植后2月恢复，较T或B淋巴细胞恢复速度快。     

阵发性睡眠性血红蛋白尿症CD34+CD59+细胞长期造血的动物实验

目的获得阵发性睡眠性血红蛋白尿症（PNH）患者正常克隆干细胞（CD34^＋CD59^＋）支持长期造血的证据。方法纯化、扩增PNH患者骨髓CD34^＋CD59^＋细胞并移植入联合免疫缺陷（SCm）小鼠体内,90d后以首次移植的小鼠骨髓细胞进行二次移植。结果分别移植了PNH患者和正常对照骨髓CD34^＋CD59^＋细胞的小鼠在移植后第90天,外周血细胞水平均恢复正常;两组小鼠的组织中均有CD45的表达,且差异无统计学意义。分别移植了由PNH患者和正常对照骨髓CD34^＋CD59^＋细胞重建造血的小鼠骨髓细胞的小鼠在移植后第30天,外周血细胞水平差异无统计学意义;两组小鼠的组织中均有C1M5的表达,且差异无统计学意义;移植后小鼠骨髓细胞里均可扩增出供者的SRY基因片段。结论经体外纯化、扩增后的PNH患者骨髓CD34^＋CD59^＋细胞具有与正常CD34^＋CD59^＋细胞同样的长期造血的能力。     

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.