急性淋巴细胞白血病免疫表型特点及其临床意义

目的 为探讨急性淋巴细胞白血病(ALL)的免疫表型特征及与治疗的关系.方法 采用流式细胞仪对77例ALL患者进行免疫表型分析.结果 ①77例ALL中L1型44.16%,L2型50.65%,L3型5.19%;B淋巴细胞性ALL(B-ALL)80.52%,T淋巴细胞性ALL(T-ALL)15.58%.②77例ALL中髓系抗原(My)阳性率为 57.14%;其中表达CD13的阳性率最高,为84.09%,其次为CD33和CD15;My+B-ALL占B-ALL的58.06%.My+T-ALL占T-ALL的50%,两组比较差别无统计学意义(P>O.05);My+ALL组CR率为81.82%,略低于My-ALL组(88.24%),但差异无统计学意义(P>0.05).③CD34表达阳性率为49.35%,B-ALL中为56.45%,明显高于T-ALL的25%(P<0.05);My+ALL中CD34表达阳性率为71.05%,高于My-ALL的33.33%(P<0.05);CD34+ALL组CR率为76.47%,低于CD34-ALL组的90.91%,但差异无统计学意义(P>0.05).结论 ALL免疫分型与FAB分型变化无相关性;My+ALL患者中CD34表达阳性率高于My-ALL患者;CD34和髓系抗原的表达与CR率无相关性.     

儿童急性淋巴细胞白血病的免疫表型分析

目的 分析儿童急性淋巴细胞白血病(ALL)的免疫表型特点.方法用一组相关单克隆抗体和流式细胞技术间接免疫荧光法对85例儿童ALL进行免疫分型.结果 T系ALL占28.2%,B系ALL占61 2%,T/B急性混合细胞白血病(AMLL)8.2%,其中髓系抗原表达率21.2%.各组L1、L2比率、染色体异常及治疗完全缓解(CR)率均无显著性差异(P＞0.05);T-ALL中CD3平均阳性率较CD2、CD7低(P＜0.01,P＜0.05),B-ALL中CD22阳性率明显低于CD10、CD19(P＜0.01).结论 ALL免疫分型与FAB分型、染色体核型变化无相关性系列特异性单抗CD3、CD22在诊断T-ALL、B-ALL中起决定作用;ALL髓系抗原阳性与治疗CR率无关.     

成人急性B淋巴细胞白血病免疫表型特征研究

目的：探讨干／祖细胞标志CD34和髓系相关抗原在B－ALL中的表达特征。方法：采用一组系列相关单克隆抗体和流式细胞术对108例成人急性B淋巴细胞白血病（B－ALL）进行免疫表型分析。结果：108例B－ALL，均表达CD10、CD19或CD22。CD34＋前B淋巴细胞白血病在所有成人B－ALL中占77．8％。My B-ALL在所有成人B－ALL中占32．4％。髓系抗原表达在CD34＋B－ALL与CD34－B-ALL两者之间差异显著（P＜0．001）。CD34表达在My B-ALL与My-B-ALL两者之间差异显著（P＜0．002）。结论：成人My B-ALL起源早于My-B-ALL，主要来源于造血干／祖细胞的恶性转化。     

三色流式细胞术在检测儿童急性淋巴细胞白血病免疫表型中的应用

目的:探讨三色荧光标记流式细胞术CD45辅助设门检测儿童急性淋巴细胞白血病(CALL)免疫表型的临床应用及意义。方法:采用流式细胞仪和几组三色荧光标记抗体检测25例FAB分型为ALL的儿童骨髓或外周血免疫表型。结果:25例ALL儿童中,B型淋巴细胞白血病14例,T型淋巴细胞白血病6例,双标记5例,在T-ALL中,淋系抗原阳性率表达顺序为CD7>CD3>CD5,在B-ALL中,淋系抗原阳性率表达顺序为CD19>CD10>CD22>CD20,在T-ALL、B-ALL及双标记中还可同时表达髓系抗原(CD13、CD14、CD15、CD33),且髓系标记抗原在T-ALL与B-ALL中出现的频率相同。结论:三色荧光标记流式细胞术CD45/SSC设门技术检测儿童急性淋巴细胞白血病免疫表型,可准确将幼稚细胞从正常细胞群中分离出来并专门对异常细胞群进行免疫表型分析,将淋巴细胞白血病分为B型和T型白血病及双标记,并能反映髓系抗原阳性的ALL(M y+ALL),对指导临床治疗有重要价值。     

急性淋巴细胞白血病免疫表型的研究及其临床意义

目的 研究急性淋巴细胞白血病(acute lymphoblastic leukemia,ALL)免疫表型的特点及其临床意义.方法 应用流式细胞术(flow cytometry,FCM)检测33例初诊ALL患者的免疫表型.结果 ①33例ALL分为B-ALL(75.76％),T-ALL(12.12％)和T/B-ALL(12.12％).②B-ALL中CD19表达率最高,占100％;T-ALL中CD7与cCD3表达率均为100％;CD20在成人及儿童组B-ALL表达率分别为23.53％、62.5％,两组比较差异有统计学意义(P＜0.05);CD22在成人及儿童组B-ALL表达率分别为29.41％、62.5％,两组比较差异有统计学意义(P＜0.05).③33例ALL中髓系抗原表达阳性率为60.61％,髓系抗原阳性与阴性患者完全缓解率之间的比较无统计学差异(P＞0.05).④33例ALL中CD34阳性表达率为66.67％,CD34阳性与阴性患者CR率之间的差异无统计学意义(P＞0.05).结论 CD19、cCD79a分别是B-ALL中高敏感性抗原和高特异性抗原,CD7、cCD3分别是T-ALL中高敏感性抗原和高特异性抗原;儿童组CD20和CD22表达率明显高于成人组;髓系抗原和CD34的表达与CR率无相关性.     

三色流式细胞术对儿童急性白血病免疫表型的分析

目的 探讨三色荧光标记流式细胞术CD45辅助设门检测儿童急性白血病免疫表型的临床应用及意义.方法 采用流式细胞仪和几组三色荧光标记抗体检测34例FAB分型为ALL与AML的儿童骨髓或外周血免疫表型.结果 25例ALL儿童中,B型淋巴细胞白血病14例,T型淋巴细胞白血病6例,双标记5例,在T-ALL中,淋系抗原阳性率表达顺序为CD7＞CD3＞CD5,在B-ALL中,淋系抗原阳性率表达顺序为CD19＞CD10＞CD22＞CD20,在T-ALL、B-ALL及双标记中还可同时表达髓系抗原（CD13、CD14、CD15、CD33）.9例AML儿童中,同时或分别表达髓系标志抗原CD15、CD33、CD13、CD14,其阳性表达率为89%、89%、79%、11%,9例中有3例还不同程度表达淋系抗原CD3、CD7、CD19.结论 三色流式细胞术,可准确将白血病分为淋系与髓系白血病,并能将淋系白血病分为B型和T型及双标记,同时能反映髓系抗原阳性的ALL（My＋ALL）与淋系抗原阳性的AML（AL＋AML）,对指导临床治疗有重要价值.     

初诊儿童急性淋巴细胞白血病细胞形态学及免疫表型特征

目的探讨儿童急性淋巴细胞白血病(acute lymphoblastic leukemia,ALL)的细胞形态学及免疫表型特征,为其诊断及治疗提供依据。方法采用多参数流式细胞术(flow cytometry,FCM)对146例初发儿童ALL患者进行免疫表型分析,并结合骨髓细胞形态检查进行分析。结果流式细胞分析显示ALL患者原始和幼稚细胞比例在46.8%~91.4%,形态学检查原始和幼稚细胞比例在50.8%~94.5%。急性B淋巴细胞白血病(acute B lymphoblastic leukemia,BALL)患者高表达Cy CD79a(100.0%)、CD19(99.2%)、CD10(84.0%)、CD9(84.0%)、CD22(82.4%)抗原;急性T淋巴细胞白血病(acute T lymphoblastic leukemia,T-ALL)患者高表达Cy CD3(100.0%)、CD7(100.0%)、CD5(76.2%)、CD2(66.7%)、CD3(57.1%)、CD8(52.4%)抗原。146例儿童ALL患者中有54例(37.0%)表达髓系抗原(My Ag)。B-ALL患者髓系相关抗原表达总的阳性率为39.2%,与T-ALL(41.6%)比较,差异无统计学意义(P0.05)。My Ag+组患者WBC≥50×109/L比例和CD34+比例均明显高于My Ag-组,差异有统计学意义(P0.01)。结论骨髓细胞形态学是诊断ALL的基础,结合其免疫表型特征分析,对ALL的诊断及分型具有重要的价值。     

急性淋巴细胞白血病伴髓系抗原表达的免疫分型特点

目的:探讨急性淋巴细胞白血病(ALL)伴髓系抗原(My)表达的免疫表型特点及进行相关分析.方法:对85例初诊ALL患者进行免疫学分型,以My阳性/阴性( /-)对B细胞ALL(B-ALL)和T细胞ALL(T-ALL)进行组间分析.结果:My B-ALL和My T-ALL患者的CD13及CD33的中位数均高于My-B-ALL和My-T-ALL患者,其表达率均显著高于My-B-ALL和My-T-ALL患者(P＜0.01,P＜0.05).My B-ALL患者的CD15的中位数高于My-B-ALL患者,表达率显著高于My-B-ALL患者(P＜0.01).CD13、CD15、CD33的相关性在组间具有显著性差异(P＜0.01).结论:ALL中My的表达与mAb克隆、细胞染色技术、样本来源、阳性界值等多种因素有关.     

伴髓系相关抗原表达的急性淋巴细胞性白血病的研究

目的：探讨伴髓系抗原表达的急性淋巴细胞白血病（My^＋-ALL）的免疫学特点及临床特征。方法：采用间接免疫荧光法检测81例惠性淋巴细胞白血病（ALL）的免疫表型。结果：81例ALL中有11例除表达淋系抗原外尚表达有髓系抗原（13．6％），其中CD　33阳性最常见（阳性率8．6％）。T-ALL和B—ALL髓系抗原表达差异无显著性，ALL各亚型间其阳性率无统计学意义（Ｐ〉0．05）。CD　34抗原表达阳性率为45．5％（5／11例），均为B—ALL，在T—ALL未见1例。My^＋-ALL与My^--ALL组在性别、年龄、外周血白细胞计数、肝脾淋巴结肿大等相比无统计学意义（P〉0．05）。结论：免疫表型分析对急淋白血病伴有髓系表达的诊断不可缺少；CD34表达与ALL亚型有关。     

儿童急性白血病免疫分型及其临床意义

目的 探讨儿童急性白血病(AL)抗原表达规律及其临床意义.方法 采用流式细胞术检测46例儿童AL的免疫表型.结果 46例AL中,急性淋巴细胞白血病(ALL)30例,急性髓细胞白血病(AML)10例,杂合型6例.30例ALL中,T系ALL 4例(13.3%),B系ALL 26例(86.7%).ALL中3例(10%)有髓系抗原表达,以CD33阳性最常见;AML中4例(40%)有淋系抗原表达,以CD7阳性率最高.儿童AML淋系抗原表达阳性率高于儿童ALL髓系抗原表达(X2=4.32,P＜0.05).B系ALL中CD34阳性率为56.5%.AML中CD34的表达频率为40.0%,其中M2的CD34阳性率为66.6%,高于其他AML病儿的CD34阳性率(X2=5.42,P＜0.05).结论 应用免疫分型可以较好地分析每例白血病病儿,尤其是对于混合型白血病及抗原交叉表达者更有意义.     

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.