99m锝-亚甲基二膦酸盐三相骨显像对糖尿病足的诊断价值

目的　评估99m锝 亚甲基二膦酸盐 (Tc99m MDP)三相骨显像对糖尿病足 (DF)的诊断价值。　方法　对 4 5例DF患者和 36例对照者进行Tc99m MDP三相骨显像。每个单足单独进行资料处理。在足背 (楔骨和跖骨 )、胫骨粗隆各勾画感兴趣区 (ROI) ,计算各ROI放射性浓度 (千计数 /像素 ,counts/ pixel)以及足部 /胫骨放射性浓度比值 (Rm/t)。生成各ROI的时间 活度曲线 ,从曲线读取各部位的灌注时间 (Tp) ,并计算各部位摄取速率 (V)。患足与健足之间Rm/t、Tp、V等指标的比较采用t检验。计算各指标的诊断灵敏度、特异性、准确率。各指标对DF诊断效能的差异采用u检验。　结果　Tp、V、Rm/t比值在对照组分别为 (33± 9)s、(2 3± 0 8)counts/s、0 85± 0 2 9,在DF组分别为(36± 13)s、(1 5± 0 3)counts/s、0 72± 0 31。两组之间比较 ,除Tp差异无显著意义外 (t=1 80 2 4 ,P>0 0 5 ) ,V(t=7 736 0 ,P <0 0 0 1)及Rm/t比值 (t=2 7395 ,P <0 0 1)在两组间差异均有显著意义。V值诊断DF的灵敏度为 82 6 % ,特异性为 83 8% ,准确率为 83 3% ,Rm/t比值则分别为 6 5 2 %、6 8 8%、6 7 3%。V值的灵敏度 (u =2 32 74 ,P <0 0 5 )和特异性 (u =2 4 0 6 8,P <0 0 5 )均优于Rm/t比值。　结论　显像剂在患者足部的     

肝硬化患者血清—氧化氮和几种白细胞介素检测的临床意义

目的　探讨肝硬化患者血清一氧化氮 (NO)、白细胞介素 2 (IL 2 )、白细胞介素 6 (IL 6 )、白细胞介素 8(IL 8)及可溶性白细胞介素 2受体 (sIL 2R)变化的临床意义。方法　应用ELISA法测定肝硬化患者及正常对照组的血清IL 6、IL 8及sIL 2R含量 ;应用MTT法检测血IL 2活性 ;应用荧光法检测血清NO水平。结果　肝硬化患者血清IL 2、sIL 2R、IL 6、IL 8及NO水平 :(5 741.5 3± 4376 .5 2 )U/ml、(486 .76± 46 .41)U/ml、(15 .78± 3.0 4) pg/ml、(2 3.89± 2 .13)pg/ml及 (6 .33± 0 .37) μmol/L ,显著高于正常对照组 :(173.88± 92 .2 1)U/ml、(2 42 .36± 35 .78)U/ml、(6 .14± 3.12 ) pg/ml、(17.71± 1.32 )pg/ml及 (3.6 8± 0 .34 ) μmol/L ,并随肝功受损程度进行性增加。 结论　肝硬化患者血清IL 2、sIL 2R、IL 6及IL 8增加可能为NO增多的诱发因素 ;肝功能损伤可能是白细胞介素活性增加的重要原因。     

老年病毒性肝炎和肝细胞癌患者外周血可溶性白细胞介素2受体的检测及意义

应用单克隆抗体夹心酶联免疫吸附试验(ELISA)对75例老年病毒性肝炎和肝细胞癌患者血清的可溶性白细胞介素2受体(sIL-2R)进行检测,并与健康老年人作对照比较。结果显示,急性肝炎黄疸期、慢性肝炎(中度)、重型肝炎组血清sIL-2R分别为129.36±37.15/ml、174.44±91.90u/ml、245.00±77.67u/ml,明显高于正常对照组的72.67±43.46/ml(P<0.01)。而慢性肝炎(轻度)、急性肝炎恢复期、肝癌组分别为82.67±30.86u/ml、73.61±20.28u/ml、70.12±30.36u/ml,与正常对照组比较无显著差异(P>0.05)。sIL-2R水平与感染的肝炎病毒类型无关(P>0.05)。老年肝癌组经免疫增强型治疗后血清sIL-2R水平升高至207.14±88.45u/ml(P<0.05)。血清sIL-2R含量的消长与疾病严重程度似呈正相关,提示临床检测sIL-2R水平对判定病情变化和预后及评估机体免疫状态有一定的意义。老年人免疫力低下可能是肝癌的重要致病因素之一。     

自体干细胞移植对晚期胃癌患者化疗后免疫重建作用的研究

目的　探讨自体外周造血干细胞移植对晚期胃癌化疗后患者免疫重建作用的影响。方法5 4例晚期胃癌患者进行数字化血管造影 (DSA)引导下的超选择高剂量动脉EAP方案 (VP16 10 0mg/m2+表阿霉素 6 0mg/m2 +卡铂 2 0 0mg/m2 )化疗后 ,其中 2 0例于 4 8h后接受自体外周血干细胞移植。结果　EAP动脉化疗后结合自体外周血干细胞移植方案对晚期胃癌患者的近期有效率为 85 .0 % ,显著高于单纯动脉化疗组的 2 9.3% (P <0 .0 1)。单纯动脉化疗组治疗前后患者的白细胞介素 2 (IL 2 )、γ 干扰素 (γ IFN)、可溶性白细胞介素 2受体 (sIL 2R)、白介素 2受体 (IL 2R)、自然杀伤细胞活性 (Nka)水平分别为 (2 0 .7± 2 .4 )U/ml,(6 4 5 .9± 4 8.2 )U/ml,(783.5± 77.1)U/ml,(13.2± 1.9) % ,(9.0± 1.1) %和(16 .3± 6 .4 )U/ml,(2 37.9± 17.4 )U/ml,(10 0 1.7± 112 .8)U/ml,(4.8± 0 .5 ) % ,(5 .93± 0 .2 ) %。γ IFN、IL 2R、NKa显著下降 (P <0 .0 1) ,sIL 2R则显著升高 (P <0 .0 1) ;而治疗组患者自体外周造血干细胞输注前及输注后 1周 ,IL 2、γ IFN、sIL 2R、IL 2R、Nka水平分别为 (2 1.7± 2 .3)U/ml,(6 32 .9± 4 7.8)U/ml,(76 8.3± 6 7.2 )U/ml,(12 .8± 1.7) % ,(9.8± 1.2 ) %和 (79.3± 7.4 )U/ml,(2 35     

维A酸对大鼠实验性阻塞性肺气肿的预防作用及其机制探讨

目的　观察维A酸 (RA)对慢性阻塞性肺气肿大鼠的预防效果并对其机制进行探讨。方法　Wistar大鼠 36只随机分为三组 ,正常对照组、模型组和用药组 ,每组 12只 ,模型组和用药组大鼠进行熏香烟实验 ,用药组同时用RA进行预防。吸烟实验结束后 ,观察各组大鼠的病理及肺功能情况 ,酶联免疫吸附试验 (ELISA)检测基质金属蛋白酶 2 (MMP 2 )和MMP 9的活性变化 ,免疫组化法观察MMP 2和MMP 9以及增殖细胞核抗原 (PCNA)的表达情况。结果　模型组肺功能指标 0 3秒用力呼气容积 (FEV0 3 )、FEV0 3 /FVC(用力肺活量 )和功能残气量 (FRC)分别为 [(5 1± 0 4 )ml、(71± 10 )ml/s、(7 2± 2 2 )ml],与正常对照组 [(6 0± 0 3)ml、(87± 3)ml/s、(2 9± 1 1)ml]比较 ,差异有显著性(P <0 0 1) ;模型组MMP 2和MMP 9的活性分别为 [(1 0 6± 0 2 3)ng/ml、(0 96 0± 0 2 30 )ng/ml],其表达与正常对照组 [(0 5 3± 0 17)ng/ml、(0 30 0± 0 0 90 )ng/ml]比较 ,差异有显著性 (P <0 0 1)。用药组肺功能指标分别为 [(5 2± 0 4 )ml、(81± 5 )ml/s、(6 1± 2 7)ml/s],与模型组比较差异有显著性 (P <0 0 5 ) ;用药组MMP 2和MMP 9的活性 [(0 83± 0 2 3)ng/ml、(0 5 70± 0 0 10 )ng/ml]和表达与模型组比     

CT灌注成像在超早期脑梗死中的应用

Objective To investigate the role of computed tomography perfusion (CTP)in the diagnosis and differential diagnosis of hyperacute cerebral infarction. Methods After CT scan was performed in 33 patients who were clinically diagnosed as cerebral infarction ＜5 hours of symptom onset,CTP imaging was performed. CT was reexamined after 24 hours.Results CT scan did not fred abnormality in 33 patients. CTP imaging showed 15 were normal and 18 were abnormal. The regional cerebral blood flow (rCBF),regional cerebral blood volume (rCBV),and regional mean transit time (rMTT) in patients with normal CTP imaging were 32.588±5.877 ml/(100 g · min),1.205 ±0.261 ml/100 g,and 2.937±0.887 s,respectively. There were no significant differences compared to the contralateral sides (33. 208 ± 6. 740)ml/(100 g · min),1. 233 ± 0. 290) ml/100 g,and 2. 854 ± 0. 799 s) (all P ＞ 0. 05).Clinical follow up and CT reexamination confirmed that 11 patients were diagnosed as transient ischemic attack (TIA),2 were hypoglycemia,and 2 were brain stem infarction. The rCBF,rCBV,and rMTT in the ipsilateral sides of 18 patients with CTP imaging abnormality were 6. 580 ±3. 457 ml/(100 g·min),0. 803 ±0. 285 ml/100 g,and 14. 947 ±4. 665 s,respectively. There were significant differences compared to the contralateral sides (34. 756 ± 4. 126 ml/(100 g·min),1. 622 ±0.708 ml/100 g,and (3.794 ± 1. 775 s) (all P ＜0. 05). Clinical follow up and CT reexamination confirmed as cerebral infarction in the basal ganglia region. Conclusions CTP imaging can be used for the diagnosis of hyperacute cerebral infarction and has the significance of differential diagnosis.     

CT灌注成像在超早期脑梗死中的应用

Objective To investigate the role of computed tomography perfusion (CTP)in the diagnosis and differential diagnosis of hyperacute cerebral infarction. Methods After CT scan was performed in 33 patients who were clinically diagnosed as cerebral infarction ＜5 hours of symptom onset,CTP imaging was performed. CT was reexamined after 24 hours.Results CT scan did not fred abnormality in 33 patients. CTP imaging showed 15 were normal and 18 were abnormal. The regional cerebral blood flow (rCBF),regional cerebral blood volume (rCBV),and regional mean transit time (rMTT) in patients with normal CTP imaging were 32.588±5.877 ml/(100 g · min),1.205 ±0.261 ml/100 g,and 2.937±0.887 s,respectively. There were no significant differences compared to the contralateral sides (33. 208 ± 6. 740)ml/(100 g · min),1. 233 ± 0. 290) ml/100 g,and 2. 854 ± 0. 799 s) (all P ＞ 0. 05).Clinical follow up and CT reexamination confirmed that 11 patients were diagnosed as transient ischemic attack (TIA),2 were hypoglycemia,and 2 were brain stem infarction. The rCBF,rCBV,and rMTT in the ipsilateral sides of 18 patients with CTP imaging abnormality were 6. 580 ±3. 457 ml/(100 g·min),0. 803 ±0. 285 ml/100 g,and 14. 947 ±4. 665 s,respectively. There were significant differences compared to the contralateral sides (34. 756 ± 4. 126 ml/(100 g·min),1. 622 ±0.708 ml/100 g,and (3.794 ± 1. 775 s) (all P ＜0. 05). Clinical follow up and CT reexamination confirmed as cerebral infarction in the basal ganglia region. Conclusions CTP imaging can be used for the diagnosis of hyperacute cerebral infarction and has the significance of differential diagnosis.     

99Tcm-甲氧基异丁基异腈(MIBI)显像与甲状腺癌远处转移的关系研究

目的 探讨甲状腺癌原发灶摄取和清除99Tcm-MIBI的能力与其发生远处转移的关系.方法 80例甲状腺癌患者行99Tcm-MIBI双时相甲状腺局部静态显像,利用感兴趣区技术,分别计算MIBI早期、延迟肿瘤与正常组织的放射性计数比值(T/N)及洗脱率.根据临床检查结果,将患者分为远处转移组(31例)和无远处转移组(49例),并对两组结果进行统计学分析.结果 远处转移组MIBI早期、延迟T/N和洗脱率分别为(2.92 ±0.97)%、(1.99 ±0.99)%和(34 ±5.91)%;无远处转移组分别为(1.74 ±0.78)%、(1.97 ±0.86)%和(13 ±4.21)%,远处转移组MIBI早期T/N和洗脱率均高于无远处转移组(P ＜ 0.05),两组间MIBI延迟T/N差异无显著性(P＞ 0.05).结论 99Tcm-MIBI显像早期T/N及洗脱率与甲状腺癌的远处转移关系密切,有进一步深入研究的价值.     

组织多普勒技术评价双心室同步起搏即刻疗效

目的　运用多普勒组织速度显像、组织同步显像 (TSI)和组织追踪显像评价双心室同步起搏治疗慢性心力衰竭的即刻疗效。方法　选择双心室同步起搏治疗的慢性心力衰竭患者 10例 ,分别记录起搏器开放和关闭时的上述三种显像 ,计算左室射血分数、左室纵向延迟收缩的比例、QRS距左室各节段收缩、舒张早期峰值时间的标准差 (Ts SD、Td SD)、二尖瓣环平均收缩峰值 (LV Sm)、右室游离壁基底段收缩峰值 (RV Sm) ,并根据组织同步显像图的色彩计算TSI指数。比较每位患者起搏器启闭时各参数变化 ,并比较Ts SD与TSI指数变化的相关性。结果　左心收缩功能参数 :左室射血分数由起搏关闭时 (37± 11 3) %增高至 (46± 10 1) % (P <0 0 1) ,LV Sm由 (3 16± 0 87)cm/s增高至 (3 76± 0 74 )cm/s (P <0 0 5 )。右室收缩功能参数 :RV Sm由 (6 79± 1 78)cm/s增高至(7 75± 1 92 )cm/s (P <0 0 1)。左心室内机械不同步参数 :左室纵向延迟收缩比例由起搏器关闭时(35± 6 0 4 ) %降低至 (18 13± 9 97) % (P <0 0 1) ,Ts SD由 (83 97± 33 0 2 )ms降低至 (5 2 6 7±19 6 5 )ms ,P <0 0 5 ,Td SD由 (87 81± 2 2 34)ms降低至 (6 3 4 5± 31 4 9)ms,P <0 0 5 ,TSI指数由 2 11± 0 15降低至 1 6 0± 0 33(P <0 0     

心肌磁共振显像、核素心肌灌注显像、超声心动图与X线左心室造影测定左心室功能的对比研究

目的:评价心肌磁共振显像(MRI)、核素心肌灌注显像和超声心动图对比X线左心室造影(LVG)检测左心室功能的应用价值。方法:46例患者同期分别行左心室造影、心肌磁共振显像、核素心肌灌注显像(30例)及超声心动图(38例)检查,测定左心室功能。将左心室造影作为标准,与其它3种影像学方法比较,行相关性及一致性分析。结果:心肌磁共振显像与左心室造影所测左心室舒张末期容积、收缩末期容积和射血分数的相关系数分别为0.94、0.98、0.96(P均＜0.001),核素心肌灌注显像与左心室造影的相关系数分别为0.82、0.90、0.93(P均＜0.001),超声心动图与左心室造影的相关系数分别为0.66、0.74、0.69(P均＜0.001)。心肌磁共振显像与左心室造影所测舒张末期容积、收缩末期容积和射血分数一致性范围分别为(-21.4±31.8)ml,(-7.7±25.0)ml,(-2.2±8.8)%。核素心肌灌注显像与左心室造影的一致性范围分别为(-36.8±53.1)ml,(-15.2±32.2)ml,(-2.6±11.0)%。超声心动图与左心室造影的一致性范围分别为(-80.9±95.8)ml,(-47.5±96.0)ml,(3.6±21.1)%。结论:心肌磁共振显像检测心功能准确、可靠,与左心室造影相关性明显,一致性好。核素心肌灌注显像与左心室造影亦具有良好的相关性,但一致性偏差。超声心动图左心功能测值较左心室造影有明显偏倚,一致性差。     

180例离退休干部下尿路症状与尿流率的相关性探讨

Objective To explore the correlation between lower urinary tract symptoms (LUTS) with prostate volume and peak flow rate in aging staff men with benign prostatic hyperplasia (BPH). Methods A total of 180 elderly patients were randomly enrolled. They were diagnosed with BPH by rectal touch and transected ultrasound from April 2008 to December 2008. The international prostate symptom score (IPSS), prostate volume (PV) as well as peak flow rate (QMAX)were analyzed respectively. Results IPSS were ( 9. 1 ± 0. 7 ) scores, ( 12. 1 ± 0. 7 ) scores and (14.0±1.3) scores in 60-69 years old group, 70-79 years old group and more than 80 years old group. PV were (40. 6±1.9) ml, (42. 4±1.9) ml and (48. 7±2.8) ml in corresponding groups, and PV was elevated along with aging (F= 5. 705, 2. 983, P＜0. 05). QMAX were ( 14.7 ± 0. 6) ml/s,(14.0±0. 5) ml/s and (12.6±0.9) ml/s, and QMAX was decreased along with aging (F=2. 131, P＞0. 05). Along with aggravation of LUTS, PV (ml) increased (39. 2±18. 1 vs. 45.7±16.9 vs. 47. 9± 16. 5) and QMAX (ml/s) decreased ( 15.0 ± 4.8 vs. 13. 5 ± 5.06 vs. 11.5 ± 4. 7, F= 3. 427, 4. 742, P ＜0.05). Conclusions The LUTS of patients with BPH is aggravated with aging, at the same time, the degree of LUTS increases with PV and decreases with QMAX. If get active treatment of drugs if available, they may improve their quality of life.     

急性淋巴细胞白血病患儿血清sTNFRs水平测定的临床价值

目的 :探讨急性淋巴细胞白血病患儿血清 TNFa、s TNFR- 和 s TNFR- 水平及其临床意义。方法 :采用 EL ISA法测定血清 TNFa、s TNFR- 和 s TNFR- 水平。结果 :2 4例 AL L患儿血清 TNFα〔(173.2 2±74.5 1) ng/L〕明显高于 2 0例正常对照儿童〔(78.5 9± 18.45 ) ng/L〕,初发与复发患儿血清 s TNFR- 〔(2 .76±1.0 5 )、(2 .44± 1.37) μg/L〕、s TNFR- 〔(2 .33± 1.18)、(2 .0 9± 1.2 2 ) μg/L〕明显高于正常儿童〔(0 .75± 0 .2 6 )、(0 .71± 0 .14) μg/L〕,均为 P <0 .0 1;血清 TNFα与 s TNFR- 呈显著性正相关 (r =0 .6 31,P <0 .0 1) ;8例患儿经有效治疗完全缓解后血清 s TNFRs均降至正常水平〔(0 .83± 0 .2 5 )、(0 .92± 0 .17) μg/L〕;血清 s TNFRs在WBC≥ 10 0× 10 9/L患儿的阳性率明显高于 WBC<10 0× 10 9/L者 (P <0 .0 1) ,其与外周血幼稚细胞数呈显著正相关 (R =0 .72 4 ,R =0 .582 ,P <0 .0 5)。结论 :AL L患儿血清 s TNFRs异常升高与白血病细胞有关 ,血清 s TNFRs水平可作为估计肿瘤负荷及治疗效果的一项指标。     

水蛭地龙提取液治疗急性脑梗死的作用机制及疗效

目的探讨水蛭地龙提取液(extractliquorfromhirudoandearthworm,ELHE)治疗急性脑梗死的作用机制及疗效。方法78例急性脑梗死患者被随机分为2组:对照组38例,进行基础治疗;治疗组40例,在基础治疗的同时静脉给予ELHE(20ml+等渗盐水250ml,静脉滴注,1次/d,连续2周)。观察2组脑梗死患者治疗前、后神经功能评分、Barthel指数及活化部分凝血活酶时间(APTT)、血浆凝血酶原时间(PT)、组织型纤溶酶原激活物(tPA)、纤溶酶原激活物的抑制剂(PAI1),以及血栓烷B2(TXB2)、6酮前列腺素(6KetoPG)Flα的变化。结果ELHE组患者经过14d治疗,其神经功能缺失评分由9.4±4.0下降为3.3±1.2,Barthel指数由25.9±4.6升高为67.4±2.8,APTT、PT分别由(28.2±3.8)s、(12.2±3.5)s延长为(42.0±5.2)s、(19.5±2.1)s,血浆tPA含量及活性分别由(10.1±1.2)μg/L、(0.27±0.03)KIU/L升高为(15.3±2.1)μg/L、(0.57±0.12)KIU/L,血浆PAI1含量及活性由(47.8±4.6)μg/L和(0.77±0.12)KAU/L下降为(44.2±3.0)μg/L和(0.68±0.11)KAU/L,血栓烷B2由(228.4±48.9)ng/L降低为(152.7±44.4)ng/L,6KetoPGF1a由(21.9±6.3)ng/L升高为(33.8±6.4)ng/L,与对照组比较差异均有显著意义(P<0.05)。结论ELHE具有明显抗凝、促纤溶、抑制血小板聚集,改善血液循     

急性胰腺炎患者血浆肾素活性、血管紧张素-Ⅱ变化的动态研究

目的:本研究旨在通过观察急性胰腺炎(AP)时肾素活性(PRA)、血管紧张素Ⅱ(ACT-Ⅱ)的改变,指导AP的治疗及严重程度的判断。方法:采用放射免疫分析法(RIA),分别测定重症急性胰腺炎(SAP)、轻型急性胰腺炎(MAP)、急性腑囊炎(AC)、急性阑尾炎(AA)、消化性溃疡急性期(PU)病人及健康对照组(HC)的PRA、AGT.Ⅱ水平(PU组仅测定AGT-Ⅱ)。SAP组发病后24 h内(SAP.A)及恢复期(SAP.R)与MAP组发病后24 h内(MAP.A)及恢复期(MAP.R)分别采血检测两项指标。结果:PRA、AGT-Ⅱ发病后24 h内的测定值.SAP.A组分别为3.84±1.92.g/(ml·h)、386.68±178.53 pg/ml。MAP.A组分别为1.88±0.93 ng/(ml·h)、142.68±83.57 p.g/ml。HC组分别为0.68±0.45 ng/(ml·h)、43.51±31.04pg/ml。SAP.A与MAP.A组两项指标显著升高。SAP.R分别为1.34±0.76.g/(ml·h)、44.71±27.93 pg/ml。MAP.R分别为1.18±0.69 ng/(ml·h)、41.82±17.88 pg/ml。SAP.A与MAP.A比较及SAP.A、MAP.A分别与HC组比较.两项指标的统计结果为P<0.05,具有垃著性差异。SAP.R与SAP.A比较,两项指标的统计结果为P<0.05,具有显著性差异。MAP.R与MAP.A比较,两项指标的统计结果为P<0.05,具有显著性差异。SAP.A与MAP.A组两项指标(或单项指标)分别与AC、AA及PU组比较,前两组均显著高     

应用多普勒导丝技术研究内乳动脉与冠状动脉前降支血流动力学

目的 比较内乳动脉(IMA)与冠状动脉前降支(LAD)相关血流动力学参数。方法应用血管内多普勒导丝记录22例患者IMA和LAD的平均峰值流速(APV)、舒张收缩流速比(DSVR),造影测量血管直径(D),计算血流量(F)。结果IMA的APV和DSVR与LAD相比有明显差别[分别为(38±12)cm/s VS(23±7)cm/s,P<0.001;0.6±0.3VS 2.4±1.1,P<0.001)];IMA的D和F明显低于LAD[分别为(2.3±0.4)cm vs(3.2±1.1)cm,P<0.05;(90±12)ml/min vs(260±12)ml/min,P<0.001]。结论IMA收缩期供血为主,血流量小;而LAD舒张期供血为主,血流量大。     

脑多巴胺转运体单光子发射型计算机断层显像在诊断帕金森病中的应用

目的探讨脑多巴胺转运体显像剂99Tcm-TRODAT-1在基底神经节的分布特点,以及单光子发射型计算机断层显像(SPECT)对诊断帕金森病(PD)的价值。方法将35例PD患者(PD组)和16例健康体检者(对照组)进行99Tcm-TRODAT-1 SPECT脑显像检查。以半定量方法分析,应用计算机感兴趣区(ROI)技术计算双侧横断位、矢状位纹状体(ST)/小脑(CB)放射性摄取率之比。结果对照组横断位左右侧和矢状位左、右侧ST/CB分别为(1.55±0.15)、(1.58±0.14)和(1.62±0.17)、(1.69±0.16)。PD组ST/CB比对照组明显减低,差异有显著性意义(P<0.01)。结论99Tcm-TRODAT-1在SPECT中显像是诊断PD的有效方法。     

p53基因在亚砷酸钠致人胚胎肺成纤维细胞凋亡中的作用

Objective To investigate the p53,Bax,bcl-2 gene in NaAsO2-induced human embryonic lung fibroblasts(HELF)apoptosis.Methods HELF was divided into HELF cells transfected with p53 plasmid(p53 group),HELF cells transfected with PC plasmid(PC group)and normal cultured HELF cells(normal group).The mRNA expression of p53,Bax and bcl-2 gene was detected by real-time PCR,the protein expression of p53,Bax and bcl-2 was assessed by immunohistochemical SABC and the cell apoptosis of HELF was detected by flow cytometry(FCM),in a 6-well plate and cultured for 48 hours,which was exposed to different doses(0,3,9,15mmol/L)NaAsO2 for 24 hours.Results The p53 gene mRNA expression level of p53 group(0.51±0.29)was lower than that of the normal group and PC group [ (1.00 ± 0.20), (1.32 ± 0.26), all P < 0.05 ]. The p53 protein expression level of p53 group(4.10 ± 1.20) was lower than the PC group and normal group[ (8.00 ± 1.63), (7.90 ± 1.79), allP < 0.05]. In p53 group, PC group, normal group exposed to 0,3,9,15 mmol/L NaAsO2 doses, the apoptotic rate [(0.57 ± 0.28)%, (22.91 ± 4.86)%, (40.05 ± 3.93)%, (44.87 ± 3.58)%; (0.65 ± 0.24)%, (14.09 ± 3.49)%,(20.31 ± 3.66)%, (32.42 ± 3.63)%; (0.56 ± 0.25)%, (12.14 ± 3.70)%, (19.61 ± 3.63)%, (30.43 ± 2.83)%], Bax mRNA expression level[(12.73 ± 3.96), (25.12 ± 6.42), (104.96 ± 26.77), (154.04 ± 30.52); (14.63 ± 3.57),(36.75 ± 3.67), (272.26 ± 66.11), (846.12 ± 243.36); (14.75 ± 5.65), (37.22 ± 11.27), (278.51 ± 37.42),(861.67 ± 369.29) ], Bax protein expression level [ ( 15.07 ± 0.83 ) %, ( 23.79 ± 3.99 ) %, (38.51 ± 1.58 ) %, (53.86 ±1.74)%;(15.43 ± 1.45)%,(36.11 ± 1.37)%, (56.86 ± 1.97)%, (76.09 ± 2.01)%; (15.20 ± 1.03)%,(35.25 ±1.09)%, (55.56 ± 2.17)%, (74.48 ± 2.85)% ] was respectively increased in a dose-dependent manner with the increased concentration of NaAsO2(all P < 0.05). The bel-2 mRNA expression level [ (443.00 ± 244.47), (156.79 ±53.18), (62.13 ± 13.66), (23.10 ± 6.44); (420.55 ± 110.77), (48.15 ± 10.02), (14.91 ± 6.53), (7.54 ± 2.62);(577.75 ± 123.22), (49.68 ± 10.11), (12.41 ± 1.28), (7.22 ± 1.89)], bcl-2 protein expression level[(47.20 ±3.77)%, (41.80 ± 2.94)%, (36.00 ± 2.36)%, (29.00 ± 2.91)%; (45.90 ± 4.15)%, (35.70 ± 2.77)%, (29.80 ±2.78)%, (24.80 ± 2.66)% ; (46.70 ± 3.47)%, (36.20 ± 2.90)%, (30.10 ± 3.21)%, (25.10 ± 2.28)% ] wasdecreased in a dose-dependent manner with the increased concentration of NaAsO2(all P < 0.05 ). In 3,9,15 mmol/L NaAsO2, apoptotic rate of p53 group, mRNA expression of bcl-2, protein expression of bcl-2 was higher than that ofnormal group and PC group, respectively (all P < 0.05), but mRNA expression of Bax, protein expression of Bax was respeetivelylower than that normal group and the PC group(P < 0.05 ). Conclusion p53 gene reduced the apoptosis induced by NaAsO2 in HELF, possibly by changing the apoptosis pathway.     

p53基因在亚砷酸钠致人胚胎肺成纤维细胞凋亡中的作用

Objective To investigate the p53,Bax,bcl-2 gene in NaAsO2-induced human embryonic lung fibroblasts(HELF)apoptosis.Methods HELF was divided into HELF cells transfected with p53 plasmid(p53 group),HELF cells transfected with PC plasmid(PC group)and normal cultured HELF cells(normal group).The mRNA expression of p53,Bax and bcl-2 gene was detected by real-time PCR,the protein expression of p53,Bax and bcl-2 was assessed by immunohistochemical SABC and the cell apoptosis of HELF was detected by flow cytometry(FCM),in a 6-well plate and cultured for 48 hours,which was exposed to different doses(0,3,9,15mmol/L)NaAsO2 for 24 hours.Results The p53 gene mRNA expression level of p53 group(0.51±0.29)was lower than that of the normal group and PC group [ (1.00 ± 0.20), (1.32 ± 0.26), all P < 0.05 ]. The p53 protein expression level of p53 group(4.10 ± 1.20) was lower than the PC group and normal group[ (8.00 ± 1.63), (7.90 ± 1.79), allP < 0.05]. In p53 group, PC group, normal group exposed to 0,3,9,15 mmol/L NaAsO2 doses, the apoptotic rate [(0.57 ± 0.28)%, (22.91 ± 4.86)%, (40.05 ± 3.93)%, (44.87 ± 3.58)%; (0.65 ± 0.24)%, (14.09 ± 3.49)%,(20.31 ± 3.66)%, (32.42 ± 3.63)%; (0.56 ± 0.25)%, (12.14 ± 3.70)%, (19.61 ± 3.63)%, (30.43 ± 2.83)%], Bax mRNA expression level[(12.73 ± 3.96), (25.12 ± 6.42), (104.96 ± 26.77), (154.04 ± 30.52); (14.63 ± 3.57),(36.75 ± 3.67), (272.26 ± 66.11), (846.12 ± 243.36); (14.75 ± 5.65), (37.22 ± 11.27), (278.51 ± 37.42),(861.67 ± 369.29) ], Bax protein expression level [ ( 15.07 ± 0.83 ) %, ( 23.79 ± 3.99 ) %, (38.51 ± 1.58 ) %, (53.86 ±1.74)%;(15.43 ± 1.45)%,(36.11 ± 1.37)%, (56.86 ± 1.97)%, (76.09 ± 2.01)%; (15.20 ± 1.03)%,(35.25 ±1.09)%, (55.56 ± 2.17)%, (74.48 ± 2.85)% ] was respectively increased in a dose-dependent manner with the increased concentration of NaAsO2(all P < 0.05). The bel-2 mRNA expression level [ (443.00 ± 244.47), (156.79 ±53.18), (62.13 ± 13.66), (23.10 ± 6.44); (420.55 ± 110.77), (48.15 ± 10.02), (14.91 ± 6.53), (7.54 ± 2.62);(577.75 ± 123.22), (49.68 ± 10.11), (12.41 ± 1.28), (7.22 ± 1.89)], bcl-2 protein expression level[(47.20 ±3.77)%, (41.80 ± 2.94)%, (36.00 ± 2.36)%, (29.00 ± 2.91)%; (45.90 ± 4.15)%, (35.70 ± 2.77)%, (29.80 ±2.78)%, (24.80 ± 2.66)% ; (46.70 ± 3.47)%, (36.20 ± 2.90)%, (30.10 ± 3.21)%, (25.10 ± 2.28)% ] wasdecreased in a dose-dependent manner with the increased concentration of NaAsO2(all P < 0.05 ). In 3,9,15 mmol/L NaAsO2, apoptotic rate of p53 group, mRNA expression of bcl-2, protein expression of bcl-2 was higher than that ofnormal group and PC group, respectively (all P < 0.05), but mRNA expression of Bax, protein expression of Bax was respeetivelylower than that normal group and the PC group(P < 0.05 ). Conclusion p53 gene reduced the apoptosis induced by NaAsO2 in HELF, possibly by changing the apoptosis pathway.     

高通量透析器的临床应用

目的 :观察高通量透析器BLS 814G用于常规血液透析时对几种尿毒症毒素的清除能力。　 方法 :选择 30例常规血液透析患者 ,随机分为A、B两组。A组患者 (n =15 )继续使用其原来的低通量透析器ME15H(Kawasumi,膜面积 1 5m2 ,超滤系数 7 7ml/mmHg.h) ;B组患者改用高通量透析器DIAPESBLS 814G (Bellcos.p .a ,膜面积 1 4m2 ,超滤系数 6 1ml/mmHg .h)。所有患者均采用动静脉内瘘及碳酸氢盐透析 ,透析液流量 5 0 0ml/min ,血流量 2 5 0ml/min ,透析时间 4 5h。透析器第一次使用时监测尿素氮 (BUN)、肌酐 (SCr)、尿酸 (UA)、磷及 β2 微球蛋白(β2 M)的清除率 ,以及透析前、后BUN、KT/V及磷、β2 M的下降率。 结果 :A组患者BUN、SCr、尿酸清除率及KT/V分别为 (190 1± 2 7 6 )ml/min、(172 5± 16 9)ml/min、(173 1± 2 1 4 )ml/min和 1 5 4± 0 34;B组患者BUN、SCr、UA清除率及KT/V分别为 (2 10 2± 14 5 )ml/min、(176 4± 2 4 2 )ml/min、(174 8± 2 2 8)ml/min和 1 70± 0 4 0 ,两组之间无显著差异 (P >0 0 5 )。A、B两组对磷的清除率分别为 (15 6 1± 14 3)ml/min、(178 7± 2 3 4 )ml/min ,透析前、后磷的下降率分别为 (5 0 4± 13 3) %、(6 2 7± 11 4 ) % ,两组之间差异显著 (P =0     

临界性高血压患者冠状动脉血流储备功能的研究

目的 :了解无症状临界性高血压患者是否有冠状动脉功能异常。方法 :经食管超声心动描记术研究 2 0例正常人 (正常对照组 )及 17例无症状临界性高血压患者 (临界性高血压组 )的冠状动脉血流储备 (CFR)。以潘生丁静脉注射后和静息时舒张期的最大血流速度比率 (D/R PDV)和收缩期最大血流速度比率 (D/R PSV )作为CFR指标。结果 :1两组受检者静息时的 PDV无显著性差异〔(43± 10 ) m m/s∶ (46± 8) mm /s,P >0 .0 5〕;2静脉注射潘生丁后临界性高血压组的 D/R PDV、D/R PSV较正常对照组明显减少 ,两组之间有显著性差异 (D/RPDV:2 .2 5± 0 .36∶ 2 .86± 0 .42 ,D/R PSV:2 .0 0± 0 .2 6∶ 2 .5 6± 0 .41,P<0 .0 5 )。结论 :无症状临界性高血压患者 CFR能力降低。