血压变异与心率变异及心电异常相关性分析

目的：研究血压变异(BPV)与心率变异(HRV)及心电图(ECG)异常相关性，方法：对157例未经治疗的早期高血压患者及167例未服过影响血压及心率药物的正常人，进行BPV、HRV及ECG异常的相关分析，各种数据在同一时刻得到，结果：当血压昼夜节律消失(非杓型)，BPV及HRV不正常，ECG异常明显高于其他组，当高血压患者血压昼夜节律存在时HRV各项指标接近正常，ECG异常率较低，HRV降低与血压负荷升高呈明显正相关，与心电异常也呈明显正相关，结论：对高血压治疗的目的。不仅仅是降压，还应尽量恢复昼夜血压的规律性，降低夜间血压负荷，调节植物神经功能，对于血压正常的患者。血压昼夜节律消失也应投以关照给予植物神经功能调节，达到或降低靶器官损伤或延缓靶器官损害的目的，提高患者的生活质量。     

张力带治疗后交叉韧带胫止点撕脱骨折

自1999年12月-2004年2月采用切开复位张力带内固定治疗后交叉韧带胫止点撕脱骨折18例，术后骨折愈合良好，关节功能满意，现介绍如下。     

浅论CT引导下肺穿刺术临床应用

探讨 CT引导下肺穿刺活检术的应用及常见漏诊原因 ,提高阳性率及减少并发症的方法。结果 2 85例有细胞学或病理结果 ,检出率 95 %。15例无细胞学或病理结果。CT引导肺穿刺术对肺周围占位性诊断率高 ,并发症少 ,是临床医师不可缺少的诊断手段     

老年患者不同靶浓度罗库溴铵肌松效应的比较

目的比较老年患者不同靶浓度罗库溴铵的肌松效应。方法择期全麻老年患者100例,ASAⅡ级,随机分为4组(n=25),A组、B组和C组麻醉诱导气管插管时效应室靶浓度(Ce)为3μg/ ml,术中维持Ce分别为0.6、0.8、1.0μg/ml;D组麻醉诱导气管插管时Ce为3.3μg/ml,术中维持Ce为0_8μg/ml。记录肌松起效时间、恢复时间和恢复指数。评价气管插管条件和术中肌松程度。记录手术及TCI时间、罗库溴铵总用药量和期间用药量[总用药量,(体重×TCI时间)]。结果4组均可顺利完成气管插管,D组起效时间较A组、B组和C组缩短(P<0.05);A组肌松满意率低,B组、C组和D组均可维持满意肌松,但C组罗库溴铵用量较多,术中肌松程度较大,术后恢复时间较长(P<0.05)。结论麻醉诱导气管插管时罗库溴铵Ce为3.3μg/ml、术中麻醉维持Ce为0.8μg/ml,可产生满意的肌松条件,且有利于术后肌松恢复,是一种适用于老年患者合理的TCI给药方案。     

HPI毒力岛缺失的EAggEC17-2突变菌株的构建及其功能研究

目的 构建HPI毒力岛缺失的EAggEC17-2突变株，初步研究EAggEC菌株携带的耶尔森菌HPI毒力岛合成铁载体Ybt的功能。方法以EAggEC17-2为出发菌株，irp8基因部分序列作为同源重组的一侧序列，irp5基因序列作为同源重组的另一侧序列，中间插入有氯霉素（Can）抗性基因（cat基因）标记。通过接合转移和同源重组，构建了缺失约24kb的HPI毒力岛功能核心区区域EAggEC17-2的仝岛缺失株EA85。应用流式细胞技术（FACS）检测指示菌株WA-CS irp1：：KN（pC3G3．3N）荧光强度的变化情况，对EA85缺失株和出发菌株进行了合成Ybt的功能比较研究。结果成功构建了EAggEC17-2HPI全岛缺失株EA85。EAggEC17-2菌株具有表达Ybt的功能，而缺失株EA85丧失了合成Ybt的能力。结论EAggEC17-2HPI毒力岛的缺失，使Ybt的合成彻底阻断。EAggEC17-2具有的合成Ybt的功能是由其染色体携带的HPI毒力岛所决定的。     

胰腺癌P53蛋白表达与AgNORs量及组织学分级的关系

目的：研究胰腺癌P53蛋白表达与癌细胞核仁组成区嗜银蛋白（AgNORs）量及组织学分级的关系。方法：用免疫组织化学法检测56例胰腺癌组织及25例正常胰腺组织中突变型P53蛋白的表达； AgNORs染色技术检测胰腺癌细胞的AgNORs含量；观察肿瘤的组织学分级。结果： 56例胰腺癌中P53蛋白表达阳性28例（50％），正常胰腺细胞均为阴性，P53蛋白在胰腺癌组织和正常胰腺组织中的表达有显著差异(P<0.01)。28例P53蛋白阳性的胰腺癌组织，AgNORs计数为9.14±2.08；28例P53蛋白阴性的胰腺癌中，AgNORs计数为5.99±1.84，二者有显著差异（P<0.01）。P53蛋白表达与肿瘤组织学分级呈显著负相关。不同的组织学分级之间，AgNORs计数有显著差异（P<0.01）。结论：胰腺癌发生发展的过程包含了〖STBX〗p53〖STBZ〗基因的突变。P53蛋白表达和AgNORs含量可反映胰腺癌的恶性程度，是一个有效的判断胰腺癌预后的指标。     

On the VIP-ergic innervation of the uterotubal junction

Chronic ACTH treatment (3 IU/kg daily for 8 days) caused an increase in wet weight of the interscapular brown adipose tissue (ISBAT) in the rat without affecting the enzyme activities of the cardiac or skeletal muscles or of ISBAT. On the other hand, chronic β-blockade (alprenolol 10 mg/kg daily for 8 days) induced elevated activities in the oxidative enzymes of the ISBAT but not of the muscle tissues measured. Combined ACTH and alprenolol treatment also increased significantly the citrate synthase and malate dehydrogenase activities and protein concentration, but decreased the weight of ISBAT to normal. The results suggest that, although a direct antagonism between the β-blockers and ACTH has not been demonstrated, β-blockers can abolish the ACTH-induced weight gain of the ISBAT.     

Tumour cell killing using chemically engineered antibody constructs specific for tumour cells and the complement inhibitor CD59

Immunotherapy using MoAbs is inefficient due to limited activation of human effectors by mouse antibodies and multiple protective mechanisms available to host cells against autologous complement. We have used chemically engineered antibody constructs and human complement in vitro to specifically target and kill neoplastic B lymphoid cells (Raji). Fab′γFcγ² chimaeric antibody (specific for human CD37) was used to activate the classical pathway of human complement on Raji cells, whilst CD59 was neutralized using one of two different bispecific F(ab′γ)² antibody constructs which contained both cell-targeting (anti-CD19 or anti-CD38) and CD59-neutralizing moieties. When either bispecific construct was used to neutralize CD59, 15–25% of cells were lysed. If CD55 was also neutralized using specific antibody, Raji cells were efficiently killed (70% lysis). When added to a mixture of target (Raji) and bystander (K562) cells, one bispecific antibody (anti-CD38 × anti-CD59) could be specifically delivered to Raji, avoiding significant uptake on CD59-expressing bystander cells (K562). The second bispecific antibody (anti-CD19 × anti-CD59) bound equally well to either cell type. Cell-specific targeting was dependent upon combination of a low-affinity anti-CD59 Fab′γ with a high-affinity anti-tumour cell Fab′γ. When Raji and K562 cells were mixed and incubated with a combination of the engineered constructs and anti-CD55 antibodies, Raji cell lysis (30–40%) was observed in the absence of K562 killing. We propose that combinations of these constructs may be of use for treatments such as ex vivo purging of autologous bone marrow or in vivo targeting of tumour cells.     

多孔结构聚合物乳胶粒

介绍了多孔结构乳胶粒的制备方法、表征手段以及成孔机理。着重阐述了“碱酸分段处理法”中不饱和酸与交联剂的种类与用量、以及碱酸处理条件等因素对乳胶粒成孔的影响。     

经动脉插管栓塞治疗自发性肝癌破裂

目的:探讨经动脉插管栓塞治疗自发性肝癌破裂出血的疗效。方法:比较自发性肝癌破裂出血的病人采用单纯支持治疗(SCA组)和经动脉插管栓塞治疗(TAE组)的临床效果。结果:TAE组较SCA组生存期明显延长,分别为(129.8±83.9)d,(3.8±5.9)d(P<0.01)。结论:对自发性肝癌破裂出血的病人应积极采用经动脉插管栓塞治疗,为患者赢得局部化疗的时机,明显延长患者的生存期。