前列安栓治疗慢性前列腺炎:多中心双盲随机安慰剂对照试验

目的　评估前列安栓治疗慢性前列腺炎各种疼痛和不适感等症状的有效性、安全性和依从性。　方法　安慰剂对照随机双盲试验。 72例慢性前列腺炎患者随机分为两组。治疗组 36例 ,每晚前列安栓 1粒纳肛 ,连续 1个月 ;对照组 36例 ,安慰剂治疗 1个月。根据前列腺按摩液 (EPS)和美国国立卫生院 (NIH)前列腺炎症状评分评估疗效。　结果　治疗组痊愈 1例 (2 .8% ) ,显效 7例(2 0 .0 % ) ,有效 16例 (45 .7% ) ,总显效率 2 2 .8% ,总有效率 6 8.6 %。对照组无痊愈病例 ,显效 2例(5 .7% ) ,有效 8例 (2 2 .8% ) ,总显效率 5 .7% ,总有效率 2 8.6 %。两组各有 1例在治疗 2周内退出试验。两组相比 ,总有效率和总显效率差别均有显著性意义 (P <0 .0 5 ) ;不良反应发生率差别无显著性意义 (P >0 .0 5 )。　结论　前列安栓治疗慢性前列腺炎安全、有效 ,患者依从性较好     

Effect of prolonged inhibition of neutral endopeptidase on cardiac hypertrophy in rats with myocardial infarction

Summary Myocardial infarction was induced in rats by ligation of the left coronary artery. Treatment with TM1, a prodrug of SQ 28,603, an inhibitor of neutral endopeptidase (NEP, EC 3.4.24.11), was started 18–20 hours after ligation and was continued for 4 weeks (100 mg/kg, orally, twice daily). Morphological and biochemical parameters were assessed at the end of therapy. The treatment resulted in a significant reduction of heart hypertrophy, which was restricted to the parts of myocardium hemodynamically upstream of the infarcted left ventricle. The weights of the right ventricle and atria were reduced by 15–20%, whereas the treatment had no effect on the left ventricle and septum weights. Treatment led to an almost complete inhibition of plasma NEP activity and to a slight decrease (-14%, p<0.05) in plasma ACE activity. Plasma ANF level increased 3.8-fold after ligation, and treatment resulted in a slight (+29%) and nonsignificant additional increase in the ANF level. The amount of hydroxyproline in the right ventricle was enhanced by +207% in control ligated rats and by +140% (NS) in treated rats. These data indicate that prolonged NEP inhibition exerts a favorable effect in heart failure by reducing the development of right ventricular and atrial hypertrophy. These effects may result from an improvement in hemodynamic conditions, leading to a reduction in cardiac preload.     

Induction of specific anti-actin antibodies and their measurement by ELISA technique.

Using the ELISA technique we have been able to quantify antibodies directed against actin and to follow the kinetics of antibody production. Specific anti-actin antisera have been raised in rabbits by immunization with chemically modified white muscle rabbit actin. Two or three dinitrophenyl groups linked per actin molecule were sufficient to break natural tolerance, while linkage of three phosphorylcholine groups to actin was not.     

Dissection of seroreactivity against the tryptophan-rich motif of the feline immunodeficiency virus transmembrane glycoprotein

Immunogenicity of the tryptophan-rich motif (TrpM) in the membrane-proximal ectodomain of the transmembrane (TM) glycoprotein of feline immunodeficiency virus (FIV) was investigated. Peptide 59, a peptide containing the TrpM of the TM of FIV, was covalently coupled to Qbeta phage virus-like particles (Qbeta-59) in the attempt to induce potent anti-TrpM B cell responses in cats. All Qbeta-59 immunized cats, but not cats that received a mixture of uncoupled Qbeta and peptide 59, developed antibodies that reacted with a same epitope in extensive binding and binding competition assays. The epitope recognized was composed of three amino acids, two of which are adjacent. However, Qbeta-59-immune sera failed to recognize whole FIV in all binding and neutralization assays performed. Furthermore, no reactivity against the TrpM was detected by screening sera from FIV-infected cats that had reacted with TM peptides, confirming that this epitope does not seem to be serologically functional in the FIV virion. The data suggest that TrpM may not be a suitable target for antiviral vaccine design.     

一种基于多门限二进制编码的多光谱图像分类新方法

不同类型的地物具有不同的反射光谱 ,在多维光谱空间中构成不同的特征向量 ,这便是遥感多光谱图象分析与识别的物理依据。传统方法中有基于单个象元波段亮度的、空间纹理的、变换空间的多光谱图象特征提取与分析方法 ,但这些方法并没有直接描述地物的最本质特征———反射光谱曲线 ,从上个世纪 80年代开始 ,当二进制编码的方法提出并在多光谱匹配识别中获得成功应用后 ,多光谱图象分析处理便可以在这种特征提取的基础上 ,研究新的方法。本文提出一种基于光谱形状描述的多门限的二进制编码分类方法 ,并给出了图象实验的结果。     

小鼠乳腺癌TM40D细胞株移植模型建立及其C-erbB-2的测定

目的　建立乳腺癌TM 4 0D细胞BALB/c小鼠移植模型 ,并检查其癌基因C erbB 2状况。方法　采用来源于BALB/c小鼠的乳腺癌TM4 0D细胞接种于BALB/c小鼠胸壁第 5～ 6肋间皮下 ,细胞数为 1× 10 6/只 ,观察成瘤情况。切除肿块作病理、C erbB 2免疫组织化学检查。结果　接种后 14d在接种部位可见肿块 ,直径 3～ 5mm ,肿瘤移植成功率为 93 33% (2 8/30 )。病理检查为乳腺癌 ,免疫组织化学C erbB 2阳性。结论　该方法建立的小鼠乳腺癌移植模型成瘤率高 ,为乳腺癌研究、尤其是以C erbB 2为靶的乳腺癌研究建立了一个很有价值的模型     

Profiling of differentially expressed chemotactic-related genes in MCP-1 treated macrophage cell line using human cDNA arrays

AIM: To study the global gene expression of chemotactic genes in macrophage line U937 treated with human monocyte chemoattractant protein-1 (MCP-1) through the use of ExpreeChipTMO2 cDNA array. METHODS: Total RNA was extracted from MCP-1 treated macrophage line U937 and normal U937 cells, reversely transcribed to cDNA, and then screened in parallel with HO2 human cDNA array chip. The scanned result was additionally validated using RT-PCR. RESULTS: The result of cDNA array showed that one chemotactic-related gene was up-regulated more than two-fold (RANTES) and seven chemotactic-related genes were down-regulated more than two-fold (CCR1, CCR5, ccll6, GROβ, GROγ,IL-8 and granulocyte chemotactic protein 2) in MCP-1 treated U937 cells at mRNA level. RT-PCR analysis of four of these differentially expressed genes gave results consistent with cDNA array findings. CONCLUSION: MCP-1 could influence some chemokine and receptor expressions in macrophages in vitro. MCP-1 mainly down-regulates the expression of chemotactic genes influencing neutrophilic granulocyte expression (GROβ, GROγ, IL-8 and granulocyte chemotactic protein 2), and the mRNA level of CCR5, which plays a critical role in many disorders and illnesses.     

药物洗脱支架在急性心肌梗死急诊冠脉介入治疗中的应用

目的探讨药物洗脱支架在急性心肌梗死(AMI)急诊冠脉介入治疗中应用的安全性和有效性。方法选择2002-11~2004-11在深圳市人民医院心内科收治的77例AMI患者,均在起病12h内给予急诊经皮冠状动脉介入治疗(PCI),按介入治疗时使用的支架不同分为两组:雷帕霉素药物洗脱支架组(38例)和普通支架组(39例)。结果所有77例病人PCI均获得成功。雷帕霉素药物洗脱支架组38支梗死相关血管的38处病变置入了38个支架;普通支架组39支梗死相关血管的39处病变置入了39个支架。两组病人的PCI后造影情况、临床情况差异无显著性。结论CypherTM雷帕霉素药物洗脱支架应用于急性心肌梗死血栓性病变是安全的和有效的。