P388白血病小鼠胸腺哺育细胞的电镜观察

作者研究了P_(388)白血病小鼠胸腺哺育细胞(thymic nurse cell,TNC)的超微结构,发现接种P_(388)白血病细胞3d后的患鼠TNC胞质内高尔基氏器,粗面内质网均较正常鼠发达,线粒体大重增加,囊泡也较丰富,在一些囊泡内可见C型病毒颗粒。以上结果表明接种P_(388)白血病细胞3d后的(C_(57)×DBA/2)F_1小鼠TNC分泌功能增强,同时也是白血病病毒出现的最早场所。     

接种白血病病毒后小鼠胸腺和淋巴结的组织结构及组织化学观察

对接种白血病病毒后30d、75d 小鼠胸腺和淋巴结的组织结构及酸性非特异性酯酶(ANAE)、酸性磷酸酶(AcP)、β～葡糖苷酸酶(β—Gase)反应类型进行了观察,并与正常组作对照。结果:30天组胸腺和淋巴结的组织结构未见异常,胸腺皮质的胸腺细胞酶反应阳性率均显著增高;胸腺髓质的胸腺细胞及淋巴结的淋巴细胞酶反应阳性率均无有意义的变化。75天组胸腺和淋巴结均可见较多白血病细胞浸润及变性坏死的病灶区,胸腺细胞及淋巴结各区的淋巴细胞三种酶反应阳性率均显著增高。     

畸形新生儿外周血淋巴细胞ANAE反应类型的观察—兼测有核细胞及微核

作者采用 ANAE 和 Giemsa 染色,观察6种畸形新生儿外周血有核细胞的变化,并与77例健康新生儿作对照。结果:ANAE 染色观察畸形新生儿组淋巴细胞 ANAE总阳性率为54.4±13.7,显著低于正常新生儿组(72.3±1.1),P<0.01。在淋巴细胞ANAE 反应类型方面,主要表现为1～3个圆点状颗粒型,畸形组(47.2±11.4)显著低于正常组(65.2±8.1),P<0.01,单核样弥散型,畸形组(4.0±2.4)显著高于正常组(1.7±1.7),P<0.01。Giemsa 染色观察,畸形组微核率为3～10‰,并见幼稚细胞显著增加。     

外周血涂片中涂抹细胞与幼稚淋巴细胞的比例在慢性淋巴细胞白血病中的意义

目的:探讨外周血涂片中涂抹细胞占淋巴细胞的比例和幼稚淋巴细胞占淋巴细胞的比例预测慢性淋巴细胞白血病预后的价值?方法:每例患者计数外周血涂片中200个淋巴细胞,计算涂抹细胞?幼稚淋巴细胞占淋巴细胞的比例?同时用流式细胞仪检测外周血中ZAP-70?CD38阳性细胞在CD5+CD19+淋巴细胞中的比例,分析涂抹细胞?幼稚细胞与细胞表达ZAP70?CD38的相关性?结果:在53例慢性淋巴细胞白血病患者中,涂抹细胞的比例为24.5%(1%~65%),幼稚细胞的比例为5.3%(1%~51%),涂抹细胞的比例和幼稚细胞的比例呈负相关(r = -0.317, P = 0.021)?在ZAP70阳性的11例(20.5%)患者中,涂抹细胞的比例明显低于ZAP70阴性的患者(P = -0.046),而幼稚细胞比例则高于ZAP70阴性的患者(P = 0.002),涂抹细胞比例和ZAP70表达呈负相关(r = -0.782,P = 0.004)?在CD38阳性15例(28.3%)患者中,涂抹细胞的比例低于CD38阴性的患者(P = 0.024),而幼稚细胞则高于CD38阴性的患者(P < 0.001),幼稚细胞比例和ZAP70?CD38均呈正相关(ZAP70:r = 0.685,P = 0.020;CD38:r = 0.575,P = 0.025)?结论:慢性淋巴细胞白血病患者外周血中涂抹细胞?幼稚细胞?ZAP70和CD38的表达基本一致,其中检测涂抹细胞和幼稚细胞比例的操作简单易行,在未开展流式细胞仪检测的基层可以作为预测慢性淋巴细胞白血病预后的指标?     

116例急性白血病初诊时外周血幼稚细胞检出率及髓象分析

目的　了解急性白血病初诊时外周血幼稚细胞的检出率及髓象情况。方法　对 116例急性白血病初诊时外周血幼稚细胞检出率及髓象进行分析。结果　幼稚细胞检出率为 93 .10 % ,以急非淋中的M3 型比例最高 ,未检出幼稚细胞的病例外周血常呈全血细胞减少的表现 ,且分类部分以成熟淋巴细胞为主 ,易误诊为再障 ,此类病例骨髓检查部分为低增生性急性白血病。结论　外周血检出幼稚细胞对诊断急性白血病具有重要意义。对未检出者应做骨髓检查确诊     

角质细胞生长因子在白血病小鼠异基因脐带血移植中的作用

目的 探讨角质细胞生长因子(KGF)在白血病小鼠异基因脐带血移植(UCBT)中的作用及机制.方法 C57BL/6胎鼠外周血作为脐带血移植物.BALB/c小鼠随机数字表法分为7组,每组12只.对照1组:单纯接种白血病;对照2组:全身辐射(TBI)前第4天(-4d)接种白血病,单纯TBI处理;对照3组:不接种白血病,TBI处理后输注2×106个脐带血总有核细胞数(TNC);对照4组:不接种白血病,自TBI-3 d起每日皮下注射磷酸盐缓冲液(PBS)连用7d,TBI后输注脐带血TNC,移植后第8天(+8 d)予输血小板支持;对照5组:TBI-4 d接种白血病,自TBI-3 d起每日皮下注射PBS连用7d,TBI后输注2×106个脐带血TNC,移植+8d予输血小板支持;实验1组:不接种白血病,自TBI-3 d起每日皮下注射KGF 1 mg/kg连用7d,TBI后输注脐带血TNC,移植+8d予输血小板支持;实验2组:接种白血病,自移植-3d起每日皮下注射KGF 1 mg/kg连用7d,TBI后输注脐带血TNC,移植+8d予输血小板支持.以生存期、病理组织学变化、脾脏淋巴细胞亚群、胸腺输出功能为观察指标并作组间比较.结果 对照1组,12只小鼠全部死于白血病,小鼠生存时间为(11.1±1.5)d;对照2组,小鼠单纯TBI处理后12只全部死于造血衰竭,生存时间为(11.5±2.5)d;对照3组,5只(5/12)小鼠生存期超过100 d,7只小鼠20 d内死于内脏出血;对照5组,白血病小鼠脐带血移植后4只(4/12)生存期超过100 d;实验2组,白血病小鼠9只(9/12)生存期超过100d.实验2组与对照5组白血病小鼠生存时间比较差异有统计学意义(Log-rank检验,x2=4.996,P=0.0254).移植后对照4组小鼠脾脏T、NK和B细胞数分别为(9.32 ±0.48)×106、(1.59 ±0.11)×106、(18.74±2.01)×106个;实验1组小鼠脾脏T、NK和B细胞数分别为(13.20±1.14)×106、(1.75±0.12)×106、(20.36±0.86)×106个,实验1组T细胞、NK细胞数均高于对照4组(均P＜0.05).实验1组信号结合T细胞受体删除DNA环(sjTREC)水平明显高于对照4组[(228±24)拷贝/105脾细胞比(167±17)拷贝/105脾细胞,P =0.002].结论 足月胎鼠外周血富含造血干祖细胞.KGF输注减少小鼠异基因脐带血移植后白血病复发,其机制为促进胸腺输出功能恢复.     

l16例急性白血病初诊时外周血幼稚细胞检出率及髓象分析

目的 了解急性白血病初诊时外周血幼稚细胞的检出率及髓象情况。方法 对116例急性白血病初诊时外周血幼稚细胞检出率及髓象进行分析。结果 幼稚细胞检出率为阳．10％，以急非淋中的M3型比例最高，未检出幼稚细胞的病例外周血常呈全血细胞减少的表现，且分类部分以成熟淋巴细胞为主，易误诊为再障，此类病例骨髓检查部分为低增生性急性白血病。结论 外周血检出幼稚细胞对诊断急性白血病具有重要意义。对未检出者应做骨髓检查确诊。     

葡萄球菌A蛋白对小鼠外周血淋巴细胞酸性——萘酚醋酸酯酶活性及脾细胞E玫瑰花环反应的影响

本文报道静脉注射SpA后小鼠外周血淋巴细胞ANAE活性和脾细胞E玫瑰花环反应的动态变化。结果表明,SpA可使小鼠淋巴细胞ANAE活性升高和脾细胞ANAE阳性率增加。     

慢性粒细胞白血病外周血T淋巴细胞及其亚群观察

应用细胞内酸性非特异性酯酶(Acid α-naphthyl acetate esterase,ANAE)标记T淋巴细胞的方法观察慢性粒细胞白血病(CML)外周血T淋巴细胞(TL)及其亚群辅助性T淋巴细胞(Th)和抑制性T淋巴细胞(Ts)的变化。结果显示:CML未缓解(NR)组外周血TL、Th和Th/Ts比值均明显低于对照组,t检验均有高度显著性差异(P<0.0001),而Ts与对照组相比无差异。缓解(CR)组外周血的TL、Th和Th/Ts比值与对照组相比均无显著差异。结果表明CML在发病和NR时细胞免疫水平明显下降,CR后免疫水平趋于正常,并认为ANAE标记法可作为观察CML疗效的一个指标。本结果提示细胞免疫功能异常与CML发病有关。     

淋巴细胞白血病和淋巴瘤T细胞受体基因重排研究

目的：探讨淋巴细胞白血病及淋巴瘤的T淋巴细胞受体（TCR）Vβ亚家族分布特点。方法：用逆转录聚合酶链反应（RT-PCR）检测急性淋巴细胞白血病5例,慢性淋巴细胞白血病2例,弥漫大B淋巴瘤3例及外周T淋巴瘤3例患者的外周血或淋巴结T淋巴细胞TCR Vβ亚家族表达。对照组为健康人8例。结果：对照组健康8例外周血淋巴细胞表达全部24个Vβ亚家族。急性淋巴细胞白血病和慢性淋巴细胞白血病患者外周血淋巴细胞TCR Vβ亚家族均呈限制性表达,外周T淋巴瘤2例和弥漫大B淋巴瘤1例Vβ亚家族呈限制性表达,另外3例表达未受抑制。而淋巴瘤患者淋巴结标本Vβ亚家族全部呈限制性表达。结论：TCR基因重排对淋巴瘤和淋巴细胞白血病的诊断有辅助作用。     

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.