心室晚电位的时间－频率表示法的进一步改进

在心室晚电位的研究中，我们引入了信号的时间一频率表示法，并根据晚电位的具体特性用Ｗｉｇｎｅｒ分布法（维格纳分布）把信号表示为在时间及频率空间中的能量分布。由于Ｗｉｇｎｅｒ分布的优异性质使我们有可能更准确表示出心室晚电位的存在。但当输入信号是两个信号的线性叠加时，Ｗｉｇｎｅｒ分布的结果会出现一个交叉项，相当于引入干扰。针对此不足，作者介绍改进方案，消除部分交叉项，收到较好的效果，并给出一些仿真及应用实例。     

Licht- und elektronenmikroskopische Untersuchungen zur Histopathogenität vonMacracanthorhynchus hirudinaceus (Archiacanthocephala) in experimentell infizierten Hausschweinen

Zusammenfassung Die vonMacracanthorhynchus hirudinaceus verursachten Läsionen im Dünndarm von experimentell infizierten Hausschweinen (7 Tage p.i. und 84 Tage p.i.) wurden licht- und elektronenmikroskopisch untersucht. Die Würmer der 84 Tage alten Infektion waren tiefer in die Darmwand eingedrungen als die 7 Tage alten Würmer. Ihr Präsoma wurde von Entzündungsbzw. Bindegewebe umhüllt, das zahlreiche Plasmazellen enthielt. Bei 7 Tage alten Infektionen wurde noch keine Fibrose nachgewiesen. Eosinophilen-ähnliche Granulozyten, die an den Proboscishaken akkumulierten, herrschten in der Läsion vor. Eine osmiophile Gleitflüssigkeit, die offenbar an der Basis der Proboscishaken ausgeschieden wurde, schien eine stark antigene Wirkung auf die Leukozyten des Schweins auszuüben. In keinem Fall wurden Würmer angetroffen, die die gesamte Darmwand perforiert hatten, wie es in China bei Menschen beschrieben wurde.

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Light and electron microscopical investigation of the histopathogenicity ofMacracanthorhynchus hirudinaceus in experimentally infected swine

One and 12 weeks after infection the lesions in the small intestine of two domestic pigs caused byMacracanthorhynchus hirudinaceus were studied by means of light and electron microscopy. Worms of 7 d.p.i. were found to have penetrated with their presoma into the tunica propria and partly into the tunica muscularis where they had caused local mechanic destructions and heavy eosinophilic-like and hemorrhagic reactions. Most eosinophilic-like granulocytes were attracted to the proboscis hooks, at the base of which an osmiophilic substance apparently was excreted. Worms of 84 d.p.i. had penetrated with their proboscis deeply into the tunica muscularis. The presoma had become encapsulated by a solid capsule of necrotic/inflammatory tissue in its inner part and by filamentous connective tissue in its outer part. The predominant leucocytes in the inflammatory tissue now were plasma cells indicating a progressive immune reaction. No worms were found to have perforated the entire intestinal wall as was described from human patients in China.

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Unterstützt durch ein Stipendium der VR China für Herrn Bin Zhao     

恶性上皮性肿瘤中CK20的表达及其临床意义

目的　研究单克隆抗体CK2 0在恶性上皮性肿瘤和卵巢转移性腺癌组织中的表达及其意义。方法　应用S P法对鼻咽非角化性癌、乳腺浸润性导管癌、肺的鳞癌和腺癌、卵巢黏液性囊腺癌、胃腺癌和结肠直肠腺癌各组总计 6 7例和 4 1例分别进行了CK2 0和CK19检测。结果　CK2 0阳性率 :肺腺癌 1/ 7(14 3% ) ,卵巢浆液性和黏液性腺癌 3/ 12 (33 3% ) ,胃腺癌 3/ 9(33 3% ) ,结肠直肠腺癌组 2 1/ 2 2 (95 5 % ) ,其他癌组织均呈阴性。结肠直肠腺癌组组与其他各组间比较差异有显著性 (P <0 0 1)。CK19在上述 4 1例癌组织中均呈强阳性表达。结论　CK2 0表达对鉴别结肠腺癌和直肠腺癌与肺腺癌和乳腺浸润性导管癌具有高度特异性和较高的敏感性 ;CK2 0高表达对鉴别卵巢原发性腺癌与卵巢的结肠腺癌或直肠腺癌转移具有一定的意义     

肝癌肺癌患者的头发分析

本文通过２８例正常人及２８例癌症病患者的头发的分析，得出癌症病患者的头发区别于正常人的头发的特征是：癌症病患者的头发中含有微量元素Ａｓ、Ｎｉ、Ｍｎ。     

Involvement of ERK, p38 and NF-kappaB signal transduction in regulation of TLR2, TLR4 and TLR9 gene expression induced by lipopolysaccharide in mouse dendritic cells

Toll-like receptors (TLR) are sentinel receptors capable of recognizing pathogen-associated molecule patterns (PAMP) such as lipopolysaccharide (LPS) and CpG-containing oligonucleotides (CpG ODN). TLR2 and TLR4 are major receptors for Gram-positive and Gram-negative bacterial cell wall components, respectively. TLR9 is necessary for CpG signalling. LPS or CpG ODN can activate immature dendritic cells (DC) and induce DC maturation characterized by production of cytokines, up-regulation of co-stimulatory molecules, and increased ability to activate T cells. However, little is known regarding the regulation of TLR gene expression in mouse DC. In this study, we investigated the regulation of TLR2, TLR4 and TLR9 gene expression by LPS in murine immature DC. TLR2, TLR4 and TLR9 mRNA were up-regulated following LPS stimulation. The up-regulation of TLR9 expression coincided with significantly increased production of tumour necrosis factor-alpha induced by LPS plus CpG ODN. While inhibition of extracellular signal-related kinase and NF-kappaB activation suppressed the up-regulation of the expression of TLR2, TLR4 and TLR9 mRNA, inhibition of p38 kinase prevented the up-regulation of TLR2 and TLR4 mRNA expression but enhanced the up-regulation of TLR9 expression. These results demonstrated that TLR2, TLR4 and TLR9 gene expression was differently regulated by LPS in mouse immature DC. Up-regulation of TLR2, TLR4 and TLR9 expression by LPS might promote the overall responses of DC to bacteria and help to explain the synergy between LPS and other bacterial products in the induction of cytokine production.     

Expression of interleukin-1 in Reed-Sternberg cells and neoplastic cells from true histiocytic malignancies.

Interleukin-1, a peptide produced by monocytes, histiocytes, and interdigitating reticulum cells, plays an important role in the regulation of immune function. In this styde, we examined the production of interleukin-1 in 115 patients with a variety of human lymphomas by using a rabbit anti-interleukin-1 antibody and the immunoperoxidase technique. Interleukin-1 was detected in Reed-Sternberg cells from 20 patients with Hodgkin's disease as well as in neoplastic cells from 9 patients with true histiocytic lymphoma or malignant histiocytosis. In the other 86 cases, which included T- and B-cell lymphomas, no interleukin-1 could be detected. This result indicates a close relationship between Hodgkin's disease and true histiocytic malignancies and provides additional evidence to support our hypothesis that Reed-Sternberg cells are related to interdigitating reticulum cells.     

冲击伤肺肋面的平行出血条纹

本文采用部分肋骨切除术,切除15只家兔双侧5、6、7、8肋中任一肋距脊柱约2cm处一段长约1cm的肋骨。一周后对受冲击波致伤的肺肋面的出血情况进行解剖观察,发现肺肋面的出血条纹呈“工”字形,从而为冲击伤肺肋面的平行出血条纹是肋间压痕这一观点找到了直接的实验证据。     

HLA-DR, DQ antigens in North American Caucasians

HLA-DR, DQ specificities are determined by serological methods in 2,586 North American Caucasians. Antigen frequency, gene frequency and haplotype frequency are computed for each phenotype observed. The DR and DQ loci antigen distributions are well-fitted to a Hardy-Weinberg equilibrium (p greater than 0.25 for DR locus, p greater than 0.10 for DQ locus). All World Health Organization (WHO) recognized HLA-DR,DQ specificities were found except HLA-DRw18, which has been identified only in the black population. DR and DQ linkage disequilibria among recently defined splits is observed. The following DR and DQ associations are found: DR1 and DQw5; DR4 and DQw7, DQw8; DR7 and DQw2, DQw9; DR8 and DQw4, DQw6, DQw7; DR9 and DQw2, DQw9; DRw10 and DQw5; DRw11 and DQw6, DQw7; DRw12 and DQw5, DQw7; DRw13 and DQw6, DQw7; DRw14 and DQw5, DQW7; DRw15 and DQw6, DQw7; DRw16 and DQw5; DRw17 and DQw2. In this large study population, the following unusual DR and DQ associations are found: DR4, DQw2; DR4, DQw1; DR1, DQw7; DR7, DQw5; DRw17, DQw6; and other unusual haplotype phenotypes containing DRX, DQX.     

取腱器配合腓肠肌筋膜瓣翻转术治疗跟腱断裂疗效观察

目的介绍利用取腱器切取腓肠肌筋膜瓣,翻转缝合断裂跟腱的临床效果。方法选取2008年1月~2012年12月我院跟腱断裂病人21例,男15例,女6例,平均年龄33.5岁,为剧烈运动后跟腱撕裂伤,均采用手术治疗。俯卧位,跟腱断裂部位纵行手术切口,马尾状撕裂部位梳理整齐后编织缝合,根据需要腱膜的长度于切口近端相应部位作纵行小切口,用取腱器取筋膜条,自皮下隧道牵出远端切口,翻转,光滑面朝后加固缝合断裂跟腱。术后长腿石膏固定4周,短腿石膏固定2周。结果 21例患者均获得术后随访,平均随访时间2.3年(1~5年)。根据Arner Lindholm评分标准,优16例,良4例,差1例,优良率95.2%。结论取腱器微创小切口下取腓肠肌腱膜方法具有小切口,创伤小,美观等优点,术后正规康复功能锻炼后临床效果良好。     

API0134对大鼠血浆和血小板血栓素B2生成与血小板聚集的影响

用放射免疫分析法和比浊法测定ＰＡＩ０１３４对大鼠血浆血栓素Ｂ２浓度，血小板ＴＸＢ２生成血小板聚集的影响。静脉注射ＡＰＩ０１３４７０ｍｇ或１００ｍｇ．ｋｇ显著降低血浆ＴＸＢ２浓度，其降低２率分别为３８．８％和５１．６％，ＡＰＩ０１３４明显抑制ＡＤＰ诱导的大鼠血小板聚集和ＴＸＢ２生成，抑制率分别为２７．８％，３９．５％，和４１．４％，５３．６％，两抑制率间呈显著正相关。