SAFEGUARD REESTRAINER

ＳＡＦＥＧＵＡＲＤＲＥＥＳＴＲＡＩＮＥＲＳＡＦＥＧＵＡＲＤＲＥＥＳＴＲＡＩＮＥＲＱｉｎ－ｚｈａｎｇＤｉｎｇ（ＴｈｅＤｅｐａｒｔｍｅｎｔｏｆＮｅｕｒｏｐｓｙｃｈｉａｔｒｙ．ＳｅｃｏｎｄＡｆｆｉｌｉａｔｅｄＨｏｓｐｉｔａｌｏｆＨｅｂｅｉＭｅｄｉｃａｌＵｎ...     

A NONLINEAR DISTRIBUTED-LUMPED HYBRID PARAMETER MODEL OF THE ARTERIAL SYSTEM

ＡＮＯＮＬＩＮＥＡＲＤＩＳＴＲＩＢＵＴＥＤ－ＬＵＭＰＥＤＨＹＢＲＩＤＰＡＲＡＭＥＴＥＲＭＯＤＥＬＯＦＴＨＥＡＲＴＥＲＩＡＬＳＹＳＴＥＭＦａｎＹｕｂｏ，ＣｈｅｎＪｕｎｋａｉ，ＫａｎｇＺｈｅｎｈｕａｎｇ，ＹｕａｎＺｈｉｒｕｎ（ＤｅｐａｒｔｍｅｎｔｏｆＥｎ...     

血小板源生长因子对培养内皮细胞移行的影响及其与血管内皮细 …

一、材料与方法1 材料与试剂 :人脐静脉内皮细胞 (ＨＵＶＥＣ)株(ＥＣＶ30 4)由武汉大学菌种保存中心提供。ＰＤＧＦ ＢＢ、ＤＭＥＭ/Ｆ12 、胎牛血清 (ＦＢＳ)及青霉素 链霉素均为美国Ｇｉｂｃｏ公司产品。血管内皮细胞生长因子 (ＶＥＧＦ)抗血清为ＳａｎｔａＣｒｕｚ公司产品。ＰＤＧＦ ＢＢ、ＳＡＢＣ试剂盒抗血清及二氨基联苯胺(ＤＡＢ)由博士德公司提供。2 血小板源生长因子 (ＰＤＧＦ)对培养ＨＵＶＥＣ移行的影响 :参照Ｇａｊｄｕｓｅｋ等[1] 介绍的方法 ,并加以改进。选用生长良好的ＨＵＶＥＣ悬液 ,调整细胞密度为 2× 10 4 个 /…     

COMPARISON OF BREAST MASS SIZE ON ULTRASONOGRAPHY,CUT-SURFACE OF RESECTED SPECIMEN,AND PALPATION

ＣＯＭＰＡＲＩＳＯＮＯＦＢＲＥＡＳＴＭＡＳＳＳＩＺＥＯＮＵＬＴＲＡＳＯＮＯＧＲＡＰＨＹ，ＣＵＴ－ＳＵＲＦＡＣＥＯＦＲＥＳＥＣＴＥＤＳＰＥＣＩＭＥＮ，ＡＮＤＰＡＬＰＡＴＩＯＮＣＯＭＰＡＲＩＳＯＮＯＦＢＲＥＡＳＴＭＡＳＳＳＩＺＥＯＮＵＬＴＲＡＳＯＮＯＧＲ...     

AUTOMATIC CLASSIFICATION OF ECG USING ARTIFICIAL NEURAL NETWORKS

ＡＵＴＯＭＡＴＩＣＣＬＡＳＳＩＦＩＣＡＴＩＯＮＯＦＥＣＧＵＳＩＮＧＡＲＴＩＦＩＣＩＡＬＮＥＵＲＡＬＮＥＴＷＯＲＫＳＡＵＴＯＭＡＴＩＣＣＬＡＳＳＩＦＩＣＡＴＩＯＮＯＦＥＣＧＵＳＩＮＧＡＲＴＩＦＩＣＩＡＬＮＥＵＲＡＬＮＥＴＷＯＲＫＳＣ．Ｌ．Ｐｅｎｇ，Ｚ．...     

VIRTUAL IMPLANTATION IN COMPUTER ASSISTED KNEE SURGERY

ＶＩＲＴＵＡＬＩＭＰＬＡＮＴＡＴＩＯＮＩＮＣＯＭＰＵＴＥＲＡＳＳＩＳＴＥＤＫＮＥＥＳＵＲＧＥＲＹＶＩＲＴＵＡＬＩＭＰＬＡＮＴＡＴＩＯＮＩＮＣＯＭＰＵＴＥＲＡＳＳＩＳＴＥＤＫＮＥＥＳＵＲＧＥＲＹＴ．ＷＡＮＧ，Ｇ．ＺＯＮＧ（ＲｏｂｏｔｉｃｓＲｅｓｅａｒｃ...     

一种用于血压控制的多模自适应算法及有效权初始位

一种用于血压控制的多模自适应算法及有效权初始位郑连清，程敬之（西安交通大学信控系，西安）ＡＭＵＬＴＩＰＬＥ－ＭＯＤＥＬＡＤＡＰＴＩＶＥＣＯＮＴＲＯＬＰＲＯＣＥＤＵＲＥＡＮＤＥＦＦＥＣＴＩＶＥＩＮＩＴＩＡＬＷＥＩＧＨＴＳＦＯＲＢＬＯＯＤＰＲＥＳＳＵＲＥ...     

TREATMENT OF FULMINANT LIVER FAILURE WISTAR RATS WITH IMPLANTED ARTIFICIAL CELLS MICROENCAPSULATED LIVING HEPATOCYTES

ＴＲＥＡＴＭＥＮＴＯＦＦＵＬＭＩＮＡＮＴＬＩＶＥＲＦＡＩＬＵＲＥＷＩＳＴＡＲＲＡＴＳＷＩＴＨＩＭＰＬＡＮＴＥＤＡＲＴＩＦＩＣＩＡＬＣＥＬＬＳＭＩＣＲＯＥＮＣＡＰＳＵＬＡＴＥＤＬＩＶＩＮＧＨＥＰＡＴＯＣＹＴＥＳＳｏｎｇＪｉｃｈａｎｇ，ＬｉＴａｏ，ＸｕＪ...     

DIELECTRIC PROPERTIES OF HUMAN BREAST CARCINOMA AND SURROUNDING TISSUES

ＤＩＥＬＥＣＴＲＩＣＰＲＯＰＥＲＴＩＥＳＯＦＨＵＭＡＮＢＲＥＡＳＴＣＡＲＣＩＮＯＭＡＡＮＤＳＵＲＲＯＵＮＤＩＮＧＴＩＳＳＵＥＳＤＩＥＬＥＣＴＲＩＣＰＲＯＰＥＲＴＩＥＳＯＦＨＵＭＡＮＢＲＥＡＳＴＣＡＲＣＩＮＯＭＡＡＮＤＳＵＲＲＯＵＮＤＩＮＧＴＩＳＳＵＥ...     

LINED CAVAL-ILIAC VENOUS PROSTHESES WITH CULTURED AUTOLOGOUS ENDOTHELIAL CELLS IN NON-HUMAN PRIMATE

ＬＩＮＥＤＣＡＶＡＬ－ＩＬＩＡＣＶＥＮＯＵＳＰＲＯＳＴＨＥＳＥＳＷＩＴＨＣＵＬＴＵＲＥＤＡＵＴＯＬＯＧＯＵＳＥＮＤＯＴＨＥＬＩＡＬＣＥＬＬＳＩＮＮＯＮ－ＨＵＭＡＮＰＲＩＭＡＴＥＬＩＮＥＤＣＡＶＡＬ－ＩＬＩＡＣＶＥＮＯＵＳＰＲＯＳＴＨＥＳＥＳＷＩＴＨＣ...     

Distribution and cellular origin of undulin in rat liver.

BACKGROUND: Undulin is a novel large glycoprotein of the interstitial extracellular matrix belonging to the fibronectin-tenascin glycoprotein gene family. The distribution in diseased liver and the cellular origin of this protein are unknown. EXPERIMENTAL DESIGN: Immunohistochemistry studies were performed on cryostat sections of normal and damaged rat livers (CCl4 model). Hepatocytes, Kupffer cells, fat-storing cells (FSC), and sinusoidal endothelial cells (EC) were isolated by standard methods and kept in culture. Undulin biosynthesis in vitro was studied by indirect immunofluorescence and by immunoprecipitation of endogenously labeled protein followed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and autoradiography. RESULTS: Undulin was demonstrated in portal stroma, in vascular adventitia, and inside the space of Disse of normal liver. Acutely and chronically damaged livers revealed strong staining reactions in damaged areas, scars, and sinusoids. The overall distribution of undulin resembled the pattern noted for fibronectin. In contrast to undulin, tenascin was not detectable within the adventitia of vascular and ductular structures of normal and damaged livers, and tenascin accumulated preferentially at scar-parenchyma interfaces in fibrotic livers. In vivo, desmin and smooth muscle alpha-actin positive cells were in part codistributed with undulin fibers as shown by double staining techniques. In vitro, undulin was detected in granules of freshly isolated FSCs and ECs and was localized as fibers in the extracellular matrix of cultivated FSCs and ECs. Synthesis of undulin was demonstrated by immunoprecipitation of the protein from cultured FSCs and ECs. No experimental evidence was found for undulin synthesis in vitro by hepatocytes and Kupffer cells. CONCLUSIONS: The novel glycoprotein undulin is present in the normal rat liver and accumulates during acute and chronic liver injury. Our results suggest that among the resident cells of the liver, FSCs and ECs are the major sources of undulin.     

Identification and characterization of a major surface antigen of Giardia lamblia

The surface antigens of Giardia lamblia trophozoites were characterized by crossed immunoelectrophoresis, radioiodination, and immunoprecipitation. Crossed immunoelectrophoretic analysis of trophozoites with hyperimmune rabbit anti-trophozoite antiserum revealed a prominent precipitin peak that disappeared upon adsorption of the antiserum with live or formaldehyde-fixed trophozoites. This peak was intensely labeled when the antigen was derived from surface-radioiodinated trophozoites. An antiserum monospecific for the antigen contained in this precipitin peak was prepared. The precipitin peak was shown to contain an antigen with an apparent molecular weight of 82,000 by Western blotting. The antiserum also detected this 82,000-molecular-weight antigen on nitrocellulose blots of trophozoites analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. On radioiodination of live trophozoites, an iodinated molecule of 82,000 apparent molecular weight was resolved by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and was immunoprecipitated by the monospecific antiserum. Preliminary characterization of this antigen with the monospecific antiserum in crossed immunoelectrophoresis revealed that the surface antigen is hydrophobic and thus may be anchored in the plasma membrane, and that it is heat sensitive, but only partially sensitive to pronase or periodate. This antigen was shared by the four G. lamblia strains examined.     

兔BK通道β亚基多克隆抗血清的制备

目的:用小鼠制备抗兔BK通道β亚基的抗血清。方法:采用RT-PCR扩增编码兔BK通道β亚基胞内段的基因。在大肠杆菌中表达GST-β亚基融合蛋白。以从PAGE凝胶上切下的融合蛋白免疫BALB/c小鼠制备多克隆抗血清。用ELISA和Westernblot鉴定抗血清的特异性。结果:用RT-PCR扩增出约300bp的兔BK通道基因。序列分析显示,扩增的序列与已发布的新西兰大白兔骨骼肌BK通道的序列完全一致。在E.coliDH5α成功地表达Mr约为37000GST-β亚基融合蛋白。ELISA和Westernblot检测证明,针对GST-β亚基融合蛋白的抗血清,不仅可特异性地识别GST-β,也可识别源于兔组织的β蛋白。抗血清的最高滴度达1∶128000。结论:克隆了编码兔BK通道β亚基胞内段的基因,并成功地获得可特异性识别新西兰大白兔BK通道β亚基的高滴度抗血清,为BK通道的进一步研究提供了物质基础。     

人胆固醇酯转运蛋白的eDNA克隆、原核表达及抗血清制备

目的:克隆人胆固醇酯转运蛋白(CETP)eDNA序列,利用大肠杆菌表达人CETP,制备兔抗人CETP的多克隆抗血清.方法:采用RT-PCR方法,将人CETP基因克隆到pET-30b( )上,构建CETP原核表达载体并转化大肠杆菌,IPTG诱导表达,切胶纯化蛋白后免疫家兔,制备CETP抗血清,以ELISA、Western blot、细胞免疫荧光方法对抗血清效价及特异性进行鉴定.结果:SDS-PAGE分析表明,经IPTG诱导,CETP基因在大肠杆菌BL21(DE3)的包涵体中高效表达,最佳诱导表达时间为4 h.将切胶纯化的蛋白免疫家兔,ELISA法测定的抗血清效价为1∶5.12×105.Western blot及细胞免疫荧光检测结果显示,抗血清可以与CETP原核及真核表达蛋白特异结合.结论:成功地将CETP进行了原核表达并制备了高效价、高特异性的兔抗人CETP抗血清,为进一步研究CETP的结构与功能奠定了基础.     

Renal localization of heparan sulfate proteoglycan by immunohistochemistry.

Glomerular localization of heparan sulfate proteoglycan (HS-proteoglycan) has been studied immunohistochemically with a highly purified antiserum to bovine aorta HS-proteoglycan core protein. The specificity of the antiserum was enhanced by consecutive fibronectin and chondroitin sulfate-dermatan sulfate proteoglycan (CS-DS proteoglycan) affinity chromatography. The affinity-purified HS-proteoglycan antibody lacked cross-reactivity by enzyme-linked immunosorbent assays (ELISA) with CS-DS proteoglycan, fibronectin, laminin, and Type IV collagen. Reactivity of the antiserum with HS-proteoglycan antigen by ELISA was inhibited by HS core protein derived from CsCl density gradient centrifugation after heparinase treatment of the HS-proteoglycan. Immunofluorescent reactivity of the HS-proteoglycan antiserum was observed with bovine glomerular basement membrane, renal interstitium, Bowman's capsule, renal arterioles, and bovine aorta. No staining was seen with rat, mouse, or human glomeruli.     

Chemical and immunological properties of the type f polysaccharide antigen of Streptococcus mutans.

The type-specific cell wall polysaccharide antigen was extracted, purified, and characterized from type f Streptococcus mutans strain OMZ175 and MT557. The antigen was extracted from lyophilized cells with 5% trichloroacetic acid at 85 C for 15 min or saline at 120 C for 30 min. The trichloroacetic acid antigen was chromatographically separated into three antigenic fractions on a diethylaminoethyl-Sephadex A-25 column. Antigen 1 (Ag1P), which was specific for type f antiserum, was further purified by passing through carboxymethyl-Sephadex C-25 and Sephadex G-200 columns. It was a polysaccharide composed of 49% rhamnose and 47% glucose. No reaction was obtained with anti-polyglycerophosphate (PGP) serum. Antigen 2 was reactive with both type f and PGP antisera and contained significant amounts of protein and phosphorus. Antigen 3 was reactive only with PGP antiserum and had no type specificity. The polysaccharide antigen gave a single precipitin band against type-specific antiserum on immunodiffusion and immunoelectrophoresis. The presence of alpha-1,6-glucosidic linkages was indicated by a 90% inhibition of the precipitin reaction by isomaltose and alpha-methyl-D-glucopyranoside, adsorption to and release from a concanavalin A-Sepharose column, and reaction with an S. mutans (type e) glucan antiserum. This antiserum was used to show that the type f polysaccharide antigen did not contain free glucan. An analysis of the antigen released from the antigen-glucan antiserum complex showed the presence of rhamnose and glucose. This released antigen also reacted with an f antiserum, which did not react with commercial dextran. The results show that the type f polysaccharide antigen is the first of those S. mutans type-specific polysaccharides identified to be immunologically related to an S. mutans glucan.     

用免疫组织化学法检测自制NPY抗体的特异性和敏感性

本实验用戊二醛作偶联剂,将神经肽Y(NPY)偶联到牛血清白蛋白(BSA),制成NPY-BSA免疫原复合物。用它免疫新西兰大白兔,成功地制备了兔抗NPY抗血清。经免疫组織化学检测,其最高使用效价为1:1000～1:2000。替代试验和吸收试验均呈阴性反应。该抗血清能显示胃肠血管壁和脑底动脉管壁的神经纤维以及大鼠脑内的神经纤维及神经元胞体。它们的分布特点与进口NPY所显示的相一致。以上结果表明,该抗血清是对NPY特异性的且有较高使用效价。     

免疫磁分离及免疫比浊分析对福氏志贺菌的自动快速定量检测

目的 以SPA包被的磁珠和富含SPA的金黄色葡萄球菌分别与福氏志贺菌的多抗血清结合,制备福氏志贺菌特异的多抗磁珠和抗体致敏的金黄色葡萄球菌作为协同凝集试剂与免疫比浊试剂,利用免疫比浊分析探索其在福氏志贺菌自动快速定量检测中的初步应用.方法 福氏志贺菌F1a免疫日本大耳白兔制备多抗血清,磁珠包被SPA后再与多抗偶联,制成多抗免疫磁珠.以该磁珠捕获模拟标本的福氏志贺菌,接种MH平板37℃培养18～24 h,菌落计数后计算免疫磁珠的特异富集作用.富含SPA的金黄色葡萄球菌(No 1800株)经甲醛灭活后,与福氏志贺菌的多抗血清结合,制备特异抗体致敏的金黄色葡萄球菌,作为协同凝集试剂和自动定量检测的免疫比浊试剂,在日立7060全自动生化分析仪编制程序进行自动检测并进行初步的方法学评价.结果 福氏志贺菌Fla免疫日本大耳白兔获得了高质量的多抗血清,特异性好,凝集效价达1:320;制备多抗免疫磁珠对福氏志贺菌具有一定的富集作用,菌落计数显示磁珠处理的细菌捕获效率约为30%;抗体致敏的金黄色葡萄球菌,作为协同凝集试剂和自动定量检测的免疫比浊试剂,在玻片上能与待测福氏志贺菌产生明显的凝集现象,在日立7060全自动生化分析仪上定量检测灵敏、特异、线性良好.结论以福氏志贺菌的多抗血清分别致敏SPA包被的磁珠和富含SPA的金黄色葡萄球菌,制备特异的多抗磁珠对福氏志贺菌有一定的特异捕获与富集作用,抗体致敏的金黄色葡萄球菌作为协同凝集试剂与免疫比浊试剂对福氏志贺菌的自动、快速、定量检测具有较好的效果,为病原菌的快速诊断和自动定量分析提供了新的思路.     

Rabbit antiserum to human thymocyte membranes: specificity for normal and malignant T-lymphocytes.

An antiserum was obtained by immunization of rabbits with human thymocyte membrane fractions. After appropriate absorptions, the antiserum was shown to detect specifically a population of T-cells. When tested by complement-mediated cytotoxicity the antiserum lysed 95% of thymocytes, 65% of normal PBL and 45% of tonsillar lymphocytes. It was also cytotoxic for three different T-cell lines (MOLT-4, CCRF-CEM and CCRF-HSB-2). When peripheral or tonsillar lymphocytes were separated into populations enriched in B- and T-cells, the percentage of cells lysed by the antiserum correlated well with the proportion of E-rosetting cells. Treatment of PBL with the antiserum and complement resulted in an increase of SmIg-positive B-cells in the residual cell fraction, which could no longer form E-rosettes. Treatment of PBL with the antiserum alone completely inhibited the E-rosette formation. The cytotoxic index on PBL from patients with various lymphoid disorders always correlated with the proportion of T-cells as assessed by E-rosette formation. Finally, the absorptive capacity of thymocytes for the antiserum was ten times higher as compared to that of PBL or tonsil cells.     

Determination of factor VIII-related antigen using commercial antisera.

Commercially available antiserum to factor VIII was used in several tests to determine whether it might serve as a reference between research laboratories involved in investigation of the factor VIII complex and whether the antiserum might be useful in the screening of large populations of patients with hereditary disorders of factor VIII. In Ouchterlony plates, the antiserum gave a single line of identity with concentrated factor VIII, cryoprecipitate, and human plasma. The antiserum was capable of inhibiting the ristocetin response of normal platelets. Testing antigenic factor VIII by the Laurell technic with the commercial antiserum on plasmas from normal and stressed normal controls, patients with von Willebrand's disease, patients with hemophilia A, and obligate carriers of hemophilia A gave diagnostic and reproducible results.