自体及异体CD3单克隆抗体激活杀伤细胞对正常造血细胞的影响

为探索自体及异体CD3单克隆抗体激活杀伤（CD3AK）细胞对正常造血细胞的影响。以固化抗CD3单克隆抗体联合小剂量IL-2诱导CD3AK细胞。采用流式细胞术（FCM）检测CD3AK细胞的表型变化。并检测正常骨髓经与自体或异体CD3AK细胞培养后CD34^ 细胞的比例变化。用集落培养检测正常骨髓经与自体或异体CD3AK细胞共同培养后CFU-GM的计数变化。结果显示：3-5μg/ml固化抗CD3单克隆抗体联合100U/mlIL-2可有效地激活CD3AK细胞;正常骨髓与异体CD3AK细胞培养6小时后CD34^ 细胞的比例下降32.37%。正常骨髓与自体CD3AK细胞共同培养6小时后CD34^ 细胞比例升高5.49%;CFU-GM集落培养显示正常骨髓与异体CD3AK细胞共同培养6小时后CFU-GM的计数下降20.44%,而正常骨髓与自体CD3AK细胞共同培养后CFU-GM的数量下降3.39%。上述结果表明,异体CD3AK细胞与正常骨髓造血细胞短期共同培养可产生一定的抑制作用。自体CD3AK细胞与骨髓造血细胞短期共同培养无明显影响。     

CD3AK/iNOS细胞对慢性粒细胞原代细胞白血病体外净化效应

本研究旨在探讨免疫细胞性一氧化氮供体CD3AK/iNOS细胞对慢性粒细胞白血病(CML)原代白血病 细胞的体外净化效应。培养并扩增PA317/iNOS细胞并用G418筛选;用NIH3T3细胞测定病毒滴度,分离外周血 单个核细胞并用抗CD3单克隆抗体激活;病毒感染靶细胞CD3AK及用G418筛选,用逆转录-聚合酶链反应 (RT PCR)检测CD3AK/iNOS中iNOScDNA的转录;用硝酸还原酶法检测CD3AK/iNOS细胞培养上清中NO含 量以及iNOS活性;用系列稀释半定量巢式RT PCR检测CML患者白血病原代细胞经CD3AK/iNOS细胞净化后 bcr/abl融合基因的表达水平。结果表明,PA317/iNOS细胞能稳定合成并分泌重组逆转录病毒颗粒;NIH3T3细胞 测定病毒滴度为1.0×105CFU/ml;RT PCR检测发现CD3AK/iNOS细胞中有iNOScDNA的转录;CD3AK/iNOS 细胞培养上清中NO含量和iNOS活性较CD3AK细胞明显升高。上述两项指标,经统计学检验,均有显著性差异 (P<0.001,P<0.001)。系列稀释半定量RT PCR检测发现,经CD3AK/iNOS细胞净化后CML患者白血病细胞 bcr/abl融合基因的表达明显下调。实验结果统计分析表明,CD3AK/Neo细胞组净化后与CD3AK/iNOS细胞组净 化后bcr/ablmRNA表达的比较具有显著性差异(P<0.001)。结论:逆转录病毒可介导iNOS基因转入CD3AK细 胞,成功地构建了CD3AK/iNOS;CD3AK/iNOS能明显地增加NO含量和iNOS活性,应用CD3AK/iNOS可能成 为一个有效的AHSCT体外净化方法。     

脐血来源树突状细胞的体外诱导及扩增

本研究的目的是分析脐血的细胞组成 ,研究加入细胞因子培养前后脐血树突状细胞的变化 ,探索体外诱导、扩增树突状细胞的方法并进行表型鉴定。选择正常成人外周血 9份 ,脐血 12份 ,分离单个核细胞。在脐血单个核细胞中加入细胞因子GM CSF、IL 3、SCF和EPO ,培养 4周。应用流式细胞仪和CD4、CD8、CD19、CD34、CD38、CD1a、CD11c及CDw12 3单克隆抗体测定正常成人外周血、培养前后 1,2 ,3,4周脐血细胞表面抗原及树突状细胞情况。结果表明 :正常成人外周血CD34 细胞 0 .0 2× 10 5 ml,CD1a 细胞 0 .0 1× 10 5 ml,CD11c 细胞 4 .32×10 5 ml,CD83 细胞 1.31× 10 5 ml,CDw12 3 细胞 1.4 1× 10 5 ml。新鲜脐血中CD34 细胞 0 .2 2× 10 5 ml,CD1a 细胞 0 .2 7× 10 5 ml,CD11c 细胞 5 .87× 10 5 ml,CD83 细胞 1.94× 10 5 ml,CDw12 3 细胞 2 .73× 10 5 ml。加入细胞因子GM CSF ,IL 3,SCF ,EPO后培养 1- 4周的脐血单个核细胞分化为CD1a ,CD11c ,CD83 ,CDw12 3 树突状细胞 ,在培养的 2 - 4周 ,脐血树突状细胞数量明显增多 ,此后逐渐减少。通过培养 ,树突状细胞数量增加 ,CD1a 细胞达 11.0 2× 10 5 ml,CD11c 细胞 2 8.2 4× 10 5 ml,CD83 细胞 10 .5 7× 10 5 ml,CDw12 3 细胞 18.7× 10 5     

《南方护理学报》第5期继续教育答题卡

姓名:工作单位:一、单项选择题1下肢深静脉栓塞病人什么情况下可以按摩下肢?A恢复期B循环改善C病人忍受能力好D以上均是2邓秋艳等报道:采用开塞露灌肠预防新生儿高胆红素血症的时间是:A出生后1h内、出生后第1天、出生后第2天B出生后第1天、第2天、第3天C出生后30min内、出生后第1天、出生后第2天D出生后30min内、出生后5h、出生后24h3CD3AK细胞是指由抗CD3抗体激活的杀伤细胞,用于治疗各种恶性肿瘤和慢性乙型肝炎均有一定的疗效,本期邓洁英报道了输入CD3AK细胞时采用哪种方法可明显减轻患者的不良反应:A白介素-2+CD3AK血浆同时输…     

CD3单克隆抗体联合IL-2激活的单个核细胞对白血病细胞体外杀伤作用

抗CD3单克隆抗体(CD3 McAb)对T细胞具有强烈的丝裂原作用。作者研究证实CD3McAb联合IL-2激活的杀伤细胞(CD3 AK)对人急性白血病新鲜细胞和K562细胞均有明显的杀伤作用。正常人CD3 AK细胞对各型急性白血病细胞杀伤活性无差别;正常人与白血病缓解期的CD3 AK细胞杀伤力类同,且自体与异体亦无区别;但复发期CD3 AK细胞杀瘤作用明显减弱。血型不影响CD3 AK细胞的杀伤作用。     

CD3AK细胞对白血病细胞杀伤活性的实验研究

目的应用CD3单克隆抗体(CD3McAb)和重组人白细胞介素-2(rhIL-2)共同诱导外周血单个核细胞制备CD3AK细胞,研究其对白血病细胞的杀伤作用。方法用台盼蓝活细胞计数法计算细胞扩增倍数,MTT法检测CD3AK细胞杀伤活性。结果正常人CD3AK细胞对各型急性白血病细胞及K562细胞均有明显的杀伤活性,且无显著性差异(P>0.05);急性白血病完全缓解期CD3AK细胞与正常人CD3AK细胞对白血病细胞的杀伤活性,亦无显著性差异(P>0.05);急性白血病未缓解期CD3AK对白血病细胞杀伤活性明显减弱,与正常人CD3AK细胞比较,差异非常显著(P<0.01)。结论正常人与急性白血病完全缓解期CD3AK细胞具有明显的抗白血病作用,急性白血病未缓解期CD3AK细胞杀伤活性明显减弱。     

CD3AK细胞两种输入方法的不良反应观察

目的探讨减少CD3AK细胞输入不良反应的最佳技术操作方法。方法将62例接受CD3AK细胞输入治疗的慢性乙型肝炎患者分为两组:用CD3AK细胞输入与白介素-2混合静脉输入的15例患者为混合输入组,采用CD3AK细胞、白介素-2分别单独静脉输入的47例患者为分开输入组,观察两组输入反应情况。结果两组头痛、发热、畏寒的发生率,经统计学处理,有显著性差异(P<0.01)。结论取CD3AK细胞、白介素-2加入生理盐水分别单独输入的方法,可减轻患者不良反应,顺利完成疗程,达到预期的治疗效果。     

脐血CD3AK细胞杀伤白血病细胞的实验研究

目的研究脐血CD3AK细胞对白血病细胞的杀伤作用。方法“抗CD3单克隆抗体刺激脐血淋巴细胞产生CI3AK细胞．以MTT法检测脐血CD3AK细胞对K562细胞株的杀伤作用．并以正常人外周血单个核细胞作对照。结果效靶比为10：1,20：1时、脐血CD3AK细胞对K562细胞和正常PBMC细胞的细胞毒活性分别为73.58±12.58％,18．68±10.84％,78．25±1035％．20.28±11.46％。脐血CD3AK细胞对K562细胞有显的杀伤作用．而对正常PBMC无明显细胞毒作用(P<0.01)。结论脐血CD3AK细胞对K562细胞有高效杀伤作用．在肿瘤的过继性免疫治疗过程中有良好的应用前景。     

肿瘤科护理

护理学杂志一们一J困“;,厂J月E/浅阶子矛娜刀1 997,12(6)一328~329CD。AK细胞治疗是最新的生物疗法,向病人乃家了履人‘刀:*一*、二JL,‘治疗前应现的副反应等。2.CD3AK细胞应即领即用,以免影响细胞活性,降低疗效。3.在输注中及输注后应加强观察,出现过敏反应,即减慢滴速同时对症治疗。4.在使用CD3AK细胞的同时化疗。先输注CD3AK细胞,间隔输注其它液体后再用化疗药.以防化疗药物破坏CD3AK细胞的活性。参3(双的)982560重度肿瘤溶解综合征的护理/曹汉琴//护理学杂志一1997,12(6)一326~328 对2例重度肿瘤溶解综合征患的治疗、护理进…     

脐血CD3AK细胞治疗恶性肿瘤的观察与护理

目的研究用脐血单个核细胞制备CD3AK细胞的抗肿瘤作用,探讨肿瘤生物治疗近期疗效的免疫指标及临床应用中的护理规范.方法分离脐血单个核细胞,用IL-2+CD3Ab诱导CD3AK细胞;测定肿瘤患者用CD3AK细胞治疗前后外周血单核细胞(PBMC)的自然杀伤(NK)活性,静脉滴注过程中严密观察患者体温和脉搏等反应.结果肿瘤患者输注CD3AK细胞一个疗程后,其PBMC的NK杀伤活性由63%升高到81%,平均升高28%,发热反应不到3%,大多在38 ℃以下,未经处理自行消退.结论 (1)CD3AK细胞输注能明显提高肿瘤患者PBMC的NK活性;(2)CD3AK细胞输注安全有效,无明显副作用;(3)肿瘤患者PBMC的NK活性测定可望成为肿瘤生物治疗近期疗效的一个参数.     

B淋巴细胞亚群上EZH2的表达对脓毒症患者预后的预测价值

目的:探讨脓毒症患者外周血B淋巴细胞（CD19 +B）、记忆B细胞亚群（CD19 +CD27 +B）上组蛋白甲基转移酶果蝇zeste基因增强子同源物2（enhance of zeste homolog 2, EZH2）动态表达变化规律及其对脓毒症患者预后判断的价值。 方法:采用前瞻性队列研究,纳入2018年6月至2020年1月在同济大学附属东方医院重症监护病房就诊的脓毒症患者48例,同期来院的40例健康体检者作为对照组。根据患者28 d存活与否将脓毒症组分为死亡组及存活组。采集确诊脓毒症1 d、3 d、7 d共3个时间点血标本（健康对照组于清晨空腹仅抽取1次）,收集不同时间点脓毒症组的血常规、IL-6、血气分析等,统计SOFA和APACHE Ⅱ评分。运用流式细胞技术检测研究对象不同时间点CD19 +B细胞上EZH2阳性率及平均荧光强度、CD19 +CD27 +B细胞上EZH2的阳性率并绘制受试者工作特征曲线,计算曲线下面积,评估对判断脓毒症患者28 d死亡的预测价值。 结果:①脓毒症组确诊后第1、3、7天外周血CD19 +B淋巴细胞上EZH2的阳性率和平均荧光强度、CD19 +CD27 +B淋巴细胞上EZH2表达的阳性率较健康对照组均显著增加,且差异具有统计学意义（ P<0.05）。随着时间推移,EZH2在CD19 +B淋巴细胞、CD19 +CD27 +B淋巴细胞上表达水平呈升高趋势。②死亡组第1天CD19 +B淋巴细胞上EZH2阳性率明显高于存活组,然而死亡组第3和7天CD19 +CD27 +B细胞上EZH2的阳性率却明显低于存活组（ P<0.05）。③脓毒症患者第1天CD19 +B淋巴细胞上EZH2阳性率、APACHEⅡ评分、SOFA评分和IL-6水平均为预测患者28 d死亡的独立危险因素。④APACHE Ⅱ评分的AUC为0.907（95% CI：0.825~0.990）,灵敏度为88.89%,特异度为76.67%;SOFA评分的AUC为0.831（95% CI：0.706~0.955）,灵敏度为66.67%,特异度为86.67%;CD19 +B淋巴细胞上EZH2阳性率的AUC为0.799（95% CI：0.657~0.941）,灵敏度为88.89%,特异度为80.77%,灵敏度优于SOFA评分,特异度高于APACHE Ⅱ评分。 结论:脓毒症患者B淋巴细胞上EZH2高表达,与患者不良预后相关;动态监测脓毒症患者B淋巴细胞上EZH2的表达有一定的临床意义。     

自体TIL治疗癌性胸水的临床疗效观察

目的研究自体肿瘤浸润淋巴细胞合并重组白细胞介素-2(TIL/rIL-2)过继免疫疗法对癌性胸腔积液的临床疗效.方法对1993年10月～1998年12月的46例癌性胸腔积液患者,行胸水TIL体外扩增并自体回输,观察近期和远期疗效.结果在可评价疗效的44例患者中,20例完全缓解(45.5%),11例部分缓解(25.0%),13例无效(29.5%),总有效率70.5%.完全缓解的病例随访中均未见治疗侧胸腔积液复发.结论自体TIL/rIL-2过继免疫治疗癌性胸水有良好的临床应用价值.     

阵发性睡眠性血红蛋白尿症患者T淋巴细胞对造血祖细胞的影响

目的：研究阵发性睡眠性血红蛋白尿症（ＰＮＨ）患者的Ｔ淋巴细胞对造血祖细胞的影响。方法：将ＰＮＨ患者外周血制备的植物血凝素刺激的Ｔ淋巴细胞条件培养液（ＰＨＡＴＣＭ）加入造血祖细胞的培养基中，用于ＰＮＨ患者和正常人骨髓的粒巨噬细胞系集落形成单位（ＣＦＵＧＭ）和红系爆式集落形成单位（ＢＦＵＥ）的培养。结果：在含有初发ＰＮＨ患者的ＰＨＡＴＣＭ培养条件下，ＰＮＨ患者和正常人骨髓ＣＦＵＧＭ和ＢＦＵＥ数明显低于含有正常人ＰＨＡＴＣＭ培养条件下的集落数；在含有好转和治愈的ＰＮＨ患者的ＰＨＡＴＣＭ培养条件下，正常人骨髓ＣＦＵＧＭ和ＢＦＵＥ数增加和恢复到正常范围。结论：初发ＰＮＨ患者的Ｔ淋巴细胞对造血祖细胞的支持作用减弱，治愈的ＰＮＨ患者的Ｔ淋巴细胞对造血祖细胞的支持作用恢复正常     

Up-regulation of functional CXCR4 expression on human lymphocytes in sepsis

OBJECTIVE: Lymphocyte dysfunction has been documented in sepsis, and evidence suggests that lymphocyte infiltration contributes to tissue injury. The purpose of this study was to examine chemokine receptor expression and function in lymphocytes from septic patients and healthy donors. DESIGN: Observational study of septic patients and laboratory investigation of normal controls. SETTING: Tertiary care intensive care unit. PATIENTS AND SUBJECTS: Nine critically ill patients fulfilling criteria for the systemic inflammatory response syndrome and with a Sepsis Score of >/=3 were included in this study. Lymphocytes were also obtained from healthy volunteers. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: The total number of circulating leukocytes in septic patients was markedly increased; however, lymphocyte counts were decreased. Chemokine receptor expression on lymphocytes was examined by flow cytometry. CXCR4 expression on lymphocytes from septic patients was increased whereas CCR5 was decreased and CCR7 was unchanged. Lipopolysaccharide stimulation of normal lymphocytes increased CXCR4 expression but decreased CCR5 and did not change CCR7 expression. This lipopolysaccharide-stimulated CXCR4 expression required 20 hrs of stimulation and was accompanied by increased messenger RNA. Lymphocytes from septic patients or after lipopolysaccharide treatment demonstrated enhanced actin polymerization and migration in response to CXCL12. Taken together, sepsis and lipopolysaccharide up-regulated CXCR4 expression and enhanced lymphocyte activation and migration in response to CXCL12. CONCLUSIONS: Blocking CXCR4 and CXCL12 function may provide a novel therapeutic method for controlling systemic inflammation and tissue injury in sepsis.     

Oxygen consumption measurement in lymphocytes for the diagnosis of pediatric patients with oxidative phosphorylation diseases

OBJECTIVES: To evaluate the results of oxygen consumption measurement in lymphocytes for the diagnosis and treatment monitoring of pediatric patients with oxidative phosphorylation diseases. DESIGN AND METHODS: Twenty-four children with an oxidative phosphorylation disease were studied. Results were compared with those of 87 healthy children. Oxygen consumption measurements in digitonine-permeabilized lymphocytes incubated with pyruvate plus malate and succinate were performed in a Clark-type oxygen electrode. RESULTS: A total of 58% of patients showed a decreased oxygen consumption in lymphocytes incubated with pyruvate. In 4 patients, this analysis was the unique initial biochemical test, which revealed an impaired mitochondrial energy metabolism. Significant differences were observed in lymphocytes incubated with pyruvate between patients and reference values (p<0.00005), and in lymphocytes incubated with pyruvate before and after treatment (p<0.05). CONCLUSIONS: This test is useful for diagnosing oxidative phosphorylation diseases in patients who did not have other biochemical alterations, although false-negative results can be found. It is not useful for treatment monitoring.     

骨髓间充质干细胞抑制再生障碍性贫血患者外周血T细胞增殖的实验研究

背景:既往研究发现骨髓间充质干细胞具有免疫抑制作用,而再生障碍性贫血患者存在T淋巴细胞异常活化及增殖。目的:体外分析骨髓间充质干细胞对再生障碍性贫血患者外周血T淋巴细胞增殖的抑制作用。方法:分离再生障碍性贫血患者外周血T淋巴细胞,行羧基荧光素乙酰乙酸琥珀酰亚胺酯(CFDASE)荧光染色,与体外培养扩增的骨髓间充质干细胞按3︰1比例直接接触法及Transwell法共培养,加入植物血凝素(PHA)刺激T淋巴细胞增殖,并设阴性及阳性对照。流式细胞术检测各组T细胞增殖情况,评价骨髓间充质干细胞对T淋巴细胞增殖的影响。结果与结论:CFDASE染色分析显示,直接接触组T细胞增殖较阳性对照组明显减低(P<0.01);Transwell组T细胞增殖亦较阳性对照组减低(P<0.05);直接接触组T细胞增殖较Transwell组明显减低(P<0.01)。骨髓间充质干细胞可能通过直接接触及分泌某些细胞因子方式抑制再生障碍性贫血患者异常增殖的T细胞,以直接接触方式发挥主要作用。     

In vivo and vitro effects of interferon-alpha 2b on functional activity of T-lymphocytes from patients with rheumatoid arthritis

AIM: To investigate the effect of recombinant alpha 2b-interferon (r alpha 2b-IFN) on functional capacity of peripheral blood (PB) T cells in rheumatoid arthritis (RA) patients and the relationship between functional characteristics of T lymphocytes and the disease activity. MATERIALS AND METHODS: PB mononuclear cells (PBMC) were separated by Ficoll-Verografine++ gradient centrifugation from 24 healthy donors (HD) and 75 RA patients 19 of which were treated with r alpha 2b-IFN (realdiron, Biofa, Lithuania) in the dosage 1 million IU i.m. each other day for 20 days, 10 injections a course. Cell surface markers (CD3, CD4, CD8) and adhesion molecules (CD18, CD54, CD2) were analyzed using specific monoclonal antibodies (MoAbs) and flow cytometry on the PBMC, freshly isolated and treated for 72 hours with medium alone, PHA, r alpha 2b-IFN and their combination. The proliferative response of PBMC to MoAbs for CD3, PHA and r alpha 2b-IFN were assessed by 3H-thymidine incorporation. The percentage of spontaneous and inducing apoptosis was quantified by flow cytometry using propidium iodide staining. RESULTS: The expression of CD18 was lower on RA PB lymphocytes compared to HD PB lymphocytes (p < 0.05). After stimulation of PBMC in both RA patients and HD with PHA, percentages of CD2+, CD3+, CD4+, CD18+ cells significantly diminished (p < 0.05), whereas the percentages of CD54+ and CD18+ (p < 0.05) cells increased. We have found three types of RA PB lymphocytes response to complex factors in vitro: 1) the presence of the proliferative response to T-mitogens but not to r alpha 2b-IFN (56% of the patients); 2) the presence of the increased proliferative response to T-mitogens and r alpha 2b-IFN (17% of the patients); 3) the absence of the proliferative response to T-mitogens and r alpha 2b-IFN (27% of the patients). PBMC of HD demonstrate only the first type of the response. R2 alpha b-IFN demonstrated own mitogenic effect and increased mitogen-induced proliferation in PBMC cultures with a high proliferative response to T-mitogens. The levels of spontaneous and inducing apoptosis were increased in RA PB lymphocytes compared to HD. After stimulation with PHA, RA PB lymphocytes preferentially underwent apoptosis whereas cells of HD proliferated. High disease activity correlated positively with an increase of a proliferative response to mitogens and apoptosis and a decrease in the percentage of lymphocytes, expressed adhesion molecules. The treatment with r alpha 2b-IFN induces changes in T-cell response to mitogens similarly to those after incubation with r alpha 2b-IFN in vitro before treatment. CONCLUSION: Functional capacity of RA PB lymphocytes relates to the disease activity. Inhibitory or stimulatory effects of r alpha 2b-IFN depend on functional activity of RA lymphocytes. Using the test with alpha 2b-IFN incubation, we may predict changes of apoptosis and proliferation levels caused by different agents in RA lymphocytes after treatment with r alpha 2b-IFN.     

肺炎衣原体感染对慢性阻塞性肺病患者T淋巴细胞亚群的影响

目的:探讨肺炎衣原体(CP)感染对慢性阻塞性肺病(COPD)患者T淋巴细胞亚群的影响。方法:选择COPD急性加重期患者176例,正常对照组46例。采用微量免疫荧光试验检测血清CP抗体IgG、IgA、IgM,采用流式细胞仪测定两组的外周血CD3 、CD4 、CD8 T淋巴细胞。结果:观察组急性CP感染率为27.3%,慢性CP感染率为19.3%,与对照组比较有显著差异(P<0.01)。CD3 、CD4 细胞在各组间无差异,COPD患者中慢性CP感染组的CD8 细胞升高、CD4 /CD8 比值降低,较对照组有明显差异(P<0.01),而急性CP感染组和阴性组的CD8 细胞及CD4 /CD8 比值与对照组差异不明显。结论:CP感染是COPD急性加重的重要诱因,CP感染特别是慢性感染是引起COPD患者细胞免疫功能紊乱的重要原因,而这种细胞免疫功能的紊乱可能参与了COPD的发病。     

特发性血小板减少性紫癜患者脾脏CD5+和CD5-B细胞共同参与血小板自身抗体的产生

目的：研究慢性特发性血小板减少性紫癜（ITP）患者脾脏CD5^ B细胞水平的变化及CD5^ 和CD5^-B细胞与血小板膜糖蛋白（GP）特异性自身抗体产生的关系，以识别致病B细胞亚群。方法：应用双色流式细胞仪检测8例慢性ITP患者脾脏CD5^ B细胞水平。选择4例血浆抗GPⅡb/Ⅲa和抗GP Ⅰb/Ⅸ抗体双阳性ITP切脾患者，应用Ficoll密度梯度离心及花环形成分离法分离脾脏B淋巴细胞，继而采用镝产珠分选法分选、纯化CD5^ B细胞和CD5^-B细胞，并分别进行体外培养，应用改良MAIPA法检测血浆和细胞培养上清液的血小板特异性抗体。结果：ITP患者脾脏CD5^ B细胞水平圈晨自身免疫性疾病患者略有增高，二者之间差异无统计学意义。CD5^ B细胞水平与患者血小板计数无相关性。4例血浆抗GPⅡb/Ⅲa抗体和抗GPⅠb/Ⅸ抗体双阳性。另外1例CD5^ B细胞培养液抗GPⅡb/Ⅲa抗体阴性，抗GPⅠb/Ⅸ抗体阳性;CD5^-B细胞培养液抗GPⅡb/Ⅲa抗体和抗GPⅠb/Ⅸ抗体双阳性。结论：脾脏CD5^ 和CD5^-B细胞 均可产生血小板GP特异性自身抗体，抗体产生种类和滴度无明显差异。提示二者共同参与了ITP的发病过程。     

无症状性脑梗死患者的心理及行为评价

目的:对无症状性脑梗死患者进行心理及行为的评价。方法:采用MMSE、WMS、HR神经心理成套测验中的指敲测验、感知觉测验及SDS 对经CT 或 MRI 证实的38例无症状性脑梗死患者进行心理及行为方面的评价,并与对照组比较。结果:无症状性脑梗死组与对照组比较,MMSE 总分无显著性差异,但分测验中近记忆力、注意力、计算力明显下降。无症状性脑梗死病人的WMS 的MQ 及各分测验有显著性下降,指敲测验及各项感知觉测验均有显著性降低。无症状性脑梗死组的 SDS 阳性率及量表分显著高于对照组。结论:无症状性脑梗死患者存在认知功能、记忆、精细运动、感知觉及情感方面的障碍,可能是血管性痴呆的前期。