前列腺特异性抗原及其密度测定在前列腺癌诊断及治疗中的价值

测定了18例前列腺癌和50例前列腺增生症（BPH）患者的血浆前列腺特异性抗原（PSA）和前列腺特异性抗原密度（PSAD），同时随访观察治疗后血浆PSA水平变化。结果表明，在区别前列腺增生症和前列腺癌中，PSAD显著优于PSA，但应用于个体时要综合分析。治疗后进行血浆PSA观察对于早期发现前列腺癌局部复发和转移以及判断治．疗效果有重要价值。     

FPSA/TPSA比值在前列腺癌诊断中的意义

目的　评价FPSA/TPSA比值在前列腺癌诊断中的作用。方法　 32例前列腺癌 (PC)及97例前列腺良性增生 (BPH)患者 ,经活检穿刺或 (和 )手术病理确诊 ,采用酶联免疫方法测定血清中总前列腺特异性抗原 (TPSA) ,游离前列腺特异性抗原 (FPSA)浓度 ,计算FPSA/TPSA(F/T)比值。结果　TPSA浓度在 4.0～ 1 0 .0 μg·L- 1 范围时 ,其浓度两组间无显著性差异 (P >0 .0 5 ) ,而F/T比值则有显著性差异 (P <0 .0 1 ) ;测得F/T比值在 0 .2 5水平时 ,总有效率最大( 62 .9% )。结论　TPSA单独作为前列腺癌和前列腺良性增生鉴别诊断的指标存在局限性。当TPSA水平在 4.0～ 1 0 .0 μg·L- 1 范围内 ,应用F/T比值较PSA为优。F/T比值在 0 .2 5界值时诊断PC和BPH最有效     

THE CLINICAL SIGNIFICANCE OF PERCENT FREE PSA IN DIFFERENTIATING PROSTATE CANCER AND BENIGN PROSTATE HYPERPLASIA

rostatecancer (Pca)isoneofthecommonestmalignanttumorsofmaleinEuropeandAmerica .ThemorbidityofPcainourcountryismuchlowerthaninothercountries,butrecentlyitwasincreasedtotwofold[1] .Althoughtheprostatespecificantigen(PSA)isthemostusefultumormarkeravailableforthediagnosisofPca ,nevertheless ,lackssufficientsensitivityandspecificity .Peoplenow putforwardtheconceptofpercentfreePSA (fPSA)andhasbe comethenewdirectionofinvestigation .However ,therestillhavesomeproblemunclearatpresent,es peciallyt…     

Preparation and characterization of polysulfonamide statistical copolymers from three aromatic diamines

Various polysulfonamide(PSA) statistical copolymers were synthesized by polycondensation of three aromatic diamines and terephthaloyl chloride.The inherent viscosities of the resulting PSA copolymers range from 1.54 to 1.66 dL/g.The precipitated PSA copolymers with feed content of p-phenylene diamine(PPD) being less than 50%(mole fraction) can be redissolved in N-methyl-2-pryrrolidone(NMP) or N,N-dimethylacetamide(DMAc) with lithium chloride of wLiCl=0.02.All of the PSA copolymers exhibit enhanced tensile s...     

前列腺特异性抗原及其密度测定在前列腺癌诊断及治疗中的价值

测定了18例前列腺癌和50例前列腺增生症（BPH）患者的血浆前列腺特异性抗原（PSA）和前列腺特异性抗原密度（PSAD），同时随访观察治疗后血浆PSA水平变化。结果表明，在区别前列腺增生症和前列腺癌中，PSAD显著优于PSA，但应用于个体时要综合分析。治疗后进行血浆PSA观察对于早期发现前列腺癌局部复发和转移以及判断治．疗效果有重要价值。     

前列腺特异性抗原值增高患者前列腺液中白细胞状态的研究

目的研究获取的前列腺特异性抗原(PSA)值增高患者的前列腺液中的白细胞状态。方法112例PSA值增高的患者在行经直肠前列腺穿刺活检前获取前列腺液,并行前列腺液中的白细胞计数。用相关分析和t检验分析白细胞与患者年龄、PSA、前列腺体积等的关系。结果所有患者的前列腺液中白细胞密度加大(平均5.29×106/mL),白细胞总数增高(平均1.58×106)。前列腺液的体积和白细胞总数与前列腺体积呈显著性相关,非前列腺癌患者较前列腺癌患者的前列腺体积和白细胞总数显著增高。结论非前列腺癌患者的PSA值增高可能与前列腺液中的白细胞增高有关。     

Preparation of Polysulfonamide/ZnO Nanocomposite by In-Situ Polymerization

Polysulfonamide/zinc oxide(PSA/ZnO) nanocomposite films with w(ZnO)=0.5% were prepared by in-situ polymerization based on 4,4′-diaminodiphenylsulfone and terephthaloyl chloride in the common solvent N,N-Dimethylacetamide(DMAc). Atomic force microscopy (AFM) was employed to observe the microstructure of the composite film. The thermal property was investigated by TGA and mechanical property was characterized by DXLL-1000 electromechanical material testing machine. The results showed that the breaking strength of the film containing 0.5% ZnO was great enhanced. The average size of ZnO particles was below 100 nm. The introduction of ZnO as nano filler in PSA react as UV shield effect and make the composite mechanical property improved.     

两种酶结合物对棘球蚴三种抗原特异性及敏感性的检测比较

对９４例包虫病患者、４４例非包虫病患者及５０例健康人血清,用羊源林球蚴囊液、原头蚴及生发层抗原,分别进行了酶联金葡菌Ａ蛋白点免疫及酶标记单抗人ＩｇＧ点免疫试验,其结果显示：前者对三种抗原的敏感性分别为９４．７％、９５．７％和９６．８％;后者分别为９２．６％、９３．６％和９３．６％。前者的特异性分别为８１．９％、９２．６％和９２．６％;后者分别为８７．２％、９１．５％和９１．５％。酶联金葡菌Ａ蛋白点免疫除了林球蚴囊液抗原的特异性低于酶标羊抗人ＩｇＧ点免疫外,原头蚴抗原、生发展抗原的特异性和三种抗原的敏感性均比后者高。