100例SARS患者外周血T淋巴细胞亚群分析

目的 :探讨SARS患者外周血T淋巴细胞亚群变化。方法 :采用流式细胞仪检测10 0例SARS住院患者外周血T淋巴细胞亚群。结果 :与正常组比较 ,SARS组白细胞总数显著下降 ,淋巴细胞百分数和绝对数显著下降 ,粒细胞绝对数显著下降 ,CD3 、CD4 、CD8 细胞绝对数显著下降 ,CD4 细胞百分数 ,CD8 细胞百分数及CD4 /CD8 比值差异无统计学意义。比较SARS患者各病程CD3 、CD4 、CD8 ,于病程第一至第三周较第四周下降明显 (P <0 .0 5 ) ,病程第一至第三周之间差别无显著性 (P >0 .0 5 ) ;结论 :SARS患者外周血T淋巴细胞亚群的变化对阐明SARS的发病机制有一定意义。     

240例SARS患者T淋巴细胞及活化亚群的变化

目的研究严重急性呼吸综合征(severeacuterespiratorysyndrome,SARS)患者外周血T淋巴细胞及其活化亚群的变化情况。方法采用多色荧光标记流式细胞术结合血液分析仪,检测240例不同病程的SARS患者(包括50例重型患者和190例普通型患者)的外周血T淋巴细胞及其活化亚群的表达情况。结果在年龄、性别无显著差异时,与正常对照组比较,SARS患者的外周血T淋巴细胞及其各活化亚群绝对值明显减低,其中CD3+CD25+、CD3+HLA-DR亚群百分比升高;与普通型患者比较,重型患者T细胞、CD4+亚群的绝对值均明显减低,CD25+CD3+、CD28+CD4+及CD95+CD4+亚群的绝对值也明显降低;各病程SARS患者比较,T淋巴细胞(包括CD4、CD8亚群)的绝对值为Ⅲ组>Ⅱ组>Ⅰ组;CD25+CD3+、CD28+CD4+及CD95+CD4+亚群的绝对值也明显降低。结论伴随着全面低下的细胞免疫功能,SARS患者的T细胞有效活化过程有所改变,以重型SARS患者尤其明显。     

长期随访的严重急性呼吸综合征患者T淋巴细胞亚群动态变化

目的研究严重急性呼吸综合征(SARS)患者外周血T淋巴细胞亚群的动态变化,探讨SARS的发病机制。方法对62例SARS冠状病毒IgG抗体阳性患者进行为期1年的随访,采集患者发病后1周、2周、1月、2~3月及1年时的外周静脉血,采用流式细胞仪检测T细胞、CD4 T和CD8 T细胞、纯真及记忆CD4 T细胞亚群。并以56例健康者作为对照。结果SARS患者外周血淋巴细胞亚群在康复后短期内有明显恢复。在发病2~3月时,CD8 T细胞数与正常对照相比差异无显著性,平均CD4 T细胞及纯真CD4 T细胞数已分别增加至(534±197)/mm3和(175±75)/mm3。但发病1年时淋巴细胞总数、T细胞、CD4 T细胞和纯真CD4 T细胞数仍低于正常对照组。结论SARS患者外周血T淋巴细胞亚群表现为可逆的一过性快速减少及恢复。     

SARS患者T淋巴细胞亚群变化的初步研究

目的探讨严重急性呼吸综合征(SARS)患者T淋巴细胞亚群的变化.方法采用流式细胞术对30例SARS患者进行外周血T淋巴细胞亚群进行测定.结果SARS患者在病程早期外周血白细胞(4153.25±515.61)μl和淋巴细胞(1 535.14±147.91)μl,CD3+(941.45±101.64)μl,CD4+(378.35±42.51)μl,CD8+(436.39±52.41)μl及CD4+/CD8+比值(0.95±0.54),较正常人外周血白细胞(6958.52±789.45)μl和淋巴细胞(2589.63±351.81)μl,CD3+(1 465.28±139.23)μl,CD4+(798.65±69.35)μl,CD8+(563.89±71.81)μl及CD4+/CD8+比值(1.49±0.64)均明显降低(P均＜0.05).结论SARS患者外周血T淋巴细胞亚群的变化对阐明SARS的发病机制及指导临床合理用药有一定意义.     

梅毒血清固定患者外周血T淋巴细胞亚群检测的意义

目的检测梅毒血清固定患者外周血T淋巴细胞亚群,为临床梅毒的早期治疗提供有效的治疗方法。方法用流式细胞仪检测梅毒血清固定患者外周血T淋巴细胞亚群CD3+、CD4+T、CD8+T细胞水平,分别分析CD3+CD4+及CD3+CD8+细胞在CD3+细胞中的比例。结果梅毒血清固定患者外周血T淋巴细胞亚群CD3+、CD8+T细胞水平分别为(67.42±8.17)%,(25.98±4.22)%,与健康对照组相比差异无统计学意义(t值分别为0.722和0.477,P均>0.05),CD4+T细胞、CD4+T/CD8+T比值分别为(33.58±6.95)%、(1.30±1.83),与健康对照组相比差异有统计学意义(t值分别为2.028和2.156,P均<0.05)。结论梅毒血清固定患者较健康人群的CD4+T细胞和CD4+/CD8+比值下降,提示梅毒血清固定患者存在免疫抑制现象。     

44例SARS患者外周血T淋巴细胞亚群的变化

目的探讨SARS患者外用血T淋巴细胞亚群的变化.方法用流式细胞仪检测44例SARS住院患者外周血T淋巴细胞亚群,并测定其白细胞计数及分类.结果与正常组比较,SARS组白细胞总数显著下降,淋巴细胞百分数和绝对数显著下降,粒细胞绝对数显著下降,粒细胞百分数显著增加;CD3+、CD4+、CD8+细胞百分数,CD4+/CD8+比值差异无统计学意义.结论SARS患者外周血淋巴细胞减少,T淋巴细胞亚群无明显变化.     

SARS病人外周血T淋巴细胞亚群变化的初步观察

目的：了解SARS病人T淋巴细胞亚群变化。方法：用流式细胞术对7例SARS病人的外周血T淋巴细胞亚群进行系列检测，并选择27例HIV感染者、5例急性腮腺炎和7例麻疹病人作疾病对照，另选20例健康人作正常对照。结果：SARS病人CD3、CD4、和CD8绝对数显著低于疾病对照和正常对照；但CD4百分率偏高、CD8百分率偏低，CD4／CD8比值显著高于疾病对照组。病程与T淋巴细胞．亚群结果呈显著正相关。SARS患者CD3^ CD4^ CD8^ 淋巴细胞百分率明显增高。结论：SARS患者T淋巴细胞水平低下，随着病程的延长，逐步回升。     

北京地区实验恒河猴外周血T淋巴细胞亚群分析

目的 测定正常实验恒河猴外周血T淋巴细胞亚群,获取基础数值.方法 使用BD FACS Calibur流式细胞仪,Cell QuestTM3.3分析软件,应用CD3-Percp、CD4-FITC、CD8-PE荧光标记的抗体,对北京地区84只实验恒河猴的外周血T淋巴细胞亚群进行统计分析.结果 北京地区实验恒河猴外周血CD3+, CD4+ T淋巴细胞占淋巴细胞(LYM)的百分比为32.82%±5.93%;CD3+CD8+ T淋巴细胞占淋巴细胞百分比为(23.99±6.34)%;CD4+/CD8+的比值为1.45±0.41;LYM百分比为白细胞的(49.70±14.00)%;LYMF为(4.634±2.181)×106/mL.结论 实验用恒河猴T淋巴细胞亚群的基础数值测定为相关比较医学研究奠定基础.     

传染性单核细胞增多症患儿血清Toll样受体2、Toll样受体9与外周血T淋巴细胞亚群变化及临床意义

目的:分析传染性单核细胞增多症(IM)患儿血清Toll样受体2(TLR2)、TLR9与外周血T淋巴细胞亚群变化及临床意义。方法:回顾性分析106例IM患儿临床资料。记录并比较IM患儿急性期与恢复期血清TLR2、TLR9及外周血T淋巴细胞亚群(CD3⁺、CD4⁺、CD8⁺、CD4⁺/CD8⁺)变化情况。根据治疗7 d时外周血EB病毒脱氧核糖核酸(EBV-DNA)转阴情况将IM患儿分为转阴组和未转阴组,比较两组一般资料,以及治疗7 d时血清TLR2、TLR9及外周血T淋巴细胞亚群表达水平。分析治疗7 d时EBV-DNA载量与血清TLR2、TLR9及外周血T淋巴细胞亚群表达水平的关系。结果:IM患儿急性期血清TLR2、TLR9表达水平高于恢复期,外周血CD3⁺、CD8⁺表达水平高于恢复期,外周血CD4⁺及CD4⁺/CD8⁺表达水平则低于恢复期(均P<0.05)。治疗7 ...     

急性白血病患者外周血T淋巴细胞亚群的检测

目的:探讨急性白血病 (AL )患者外周血 T淋巴细胞亚群的表达及其意义。 方法:采用间接免疫荧光法对 2 4例 AL患者和 2 2例正常对照者外周血 T淋巴细胞亚群 ,包括 T细胞 (CD3 )、T辅助细胞 (CD4 )、T抑制细胞 (CD8 )及 CD4 /CD8 的比值进行检测。按外周血白血病细胞多少将 AL 分为白血病细胞 <30 %组和 >30 %组 ,并对 2组 T细胞亚群检测结果进行了比较。结果 :AL 患者 CD3 、CD4 、CD8 、CD4 /CD8 比值较正常对照组明显下降 (P均 <0 .0 1)。急性淋巴细胞白血病 (AL L )患者外周血 CD4 (18.6 0± 7.91) % ,CD8 为 (18.91± 6 .0 0 ) % ,CD4 /CD8 呈现比值倒置。白血病细胞 <30 %组 CD3 为 (4 3.10± 7.2 6 ) % ,白血病细胞 >30 %组 CD3 为(30 .78± 9.30 ) % ,两者相比差异有统计学意义 (P<0 .0 5 )。 结论:细胞免疫功能紊乱与 AL 的发病有关。     

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.