肝抗原自身抗体的检测在自身免疫性肝炎诊断中的临床意义

目的 检测自身免疫性肝炎(AIH)患者血清中抗可溶性肝抗原/肝胰抗原(SLA/LP)、抗平滑肌抗体(SMA)、抗肝肾微粒体(LKM-1)、抗肝细胞溶质抗原(LC-1)及抗线粒体抗体(AMA-M2),并对其阳性率进行比较,为临床诊断AIH筛选和确立相应的实验辅助诊断指标.方法 采用免疫荧光法检测抗SMA,免疫印迹法检测抗SLA/LC、抗AMA-M2、抗LKM-1及抗LC-1.结果 自身免疫性肝炎(AIH)组:抗SLA/LP抗体阳性率为42.9%,抗SMA阳性率为14.3%,抗LKM-1、抗LC-1及AMA-M2均为阴性.原发性胆汁性肝硬化(PBC)组:抗线粒体抗体(AMA-M2)阳性率100%,其他各项检测均阴性.对照组全部阴性.结论 抗SLA/LP抗体在AIH相关抗体中有较高的诊断价值,可作为AIH新的血清学指标.     

蓝桉果免疫调节作用的实验研究

目的探讨蓝桉果对小鼠巨噬细胞吞噬功能、免疫器官及抗体生成的影响.方法采用腹腔巨噬细胞吞噬测定方法、免疫器官重量法及凝集素测定方法,观察吞噬百分率、吞噬指数、胸腺指数和脾脏指数、血清凝集素的生成.结果蓝桉果溶液具有增强小鼠腹腔巨噬细胞吞噬功能的作用,能明显增加小鼠免疫器官的重量和明显提高小鼠血清凝集素水平的作用.结论蓝桉果在调动机体免疫系统机能方面有一定的促进作用.     

生物信息处理系统--遗传算法探讨

分析了遗传算法中改进后的分层和混合遗传算法,并针对遗传算法中仍然面临着的主要问题提出和分析了免疫遗传算法,阐述了免疫遗传算法的实现过程.预见了未来遗传算法与其他信息处理系统的融合,未来的遗传算法将从生物信息处理系统的其它角度来进行研究,应用于更广泛的学科领域.     

The multifaceted Paneth cell

Paneth cells (PCs) were described over a century ago as granulated cells located at the base of small intestinal crypts, the 'crypts of Lieberkühn.' Various histochemical staining procedures were developed that identified PCs based on their distinctive granule staining pattern. Early on, PCs were proposed to perform a specialized function other than absorption of digested nutrients, the predominant task of the small intestinal epithelium. Since then, many constituents of the PC granules have been biochemically characterized. The presence of various granule-associated antimicrobial substances and their release upon microbial challenge suggest that PCs function as specialized defense cells in the small intestine. Altered resistance to microbial infection in animal models with disrupted or augmented PC function provides further support for the host defense role of PCs. Other PC components suggest that PCs may also participate in the regulation of lumenal ionic composition, crypt development, digestion, and intestinal inflammation. Received 6 June 2001; received after revision 26 July 2001; accepted 27 July 2001     

海洋藻类多糖的药理研究

海洋藻类植物，如螺旋藻、羊栖菜、海带等中的多糖成分所具有的抗肿瘤、免疫增强和免疫调节、抗辐射、抗衰老、对机体细胞的保护、抗病毒等药理作用的研究进展进行了概述．     

细胞免疫在Tamm－Horsfal蛋白所致肾小管间质性肾炎组织损伤中的作用

采用Ｔａｍｍ－Ｈｏｒｓｆａｌ蛋白（ＴＨＰ）直接肾内注射建立大鼠的小管间质性肾炎（ＴＩＮ）模型，ＴＩＮ组９只动物均发生小管间质性组织病理损伤，局灶性单核、淋巴细胞炎症细胞浸润；对照组仅１只轻度炎症改变。外周血Ｔ淋巴细胞免疫表型分析，术后７ｄＴＩＮ组与对照组间ＣＤ＋４、ＣＤ＋８、ＣＤ＋８－ＣＤ＋２５、ＣＤ＋８－Ｉａ＋抗原的表达及ＣＤ４／ＣＤ８的比值均无显著性差异（Ｐ＞０．０５），而术后１４ｄ、ＴＩＮ组均见升高，与对照组比差异有显著性（Ｐ＜０．０５），表明ＴＩＮ组出现Ｔ淋巴细胞的免疫应答反应和活化性细胞毒Ｔ细胞明显增加，从而证实ＴＨＰ在致ＴＩＮ免疫发病机制中，确实存在免疫系统激活，导致肾间质炎症损伤     

冬泳锻炼对中老年几项免疫指标的影响

主要以微量法玫瑰花环试验检测３１例参加冬泳锻炼的健康中老年人末梢血的Ｅ，Ｙ玫瑰花环数，并以２７例不参加体育锻炼的健康中老年人作对照．发现安静时锻炼组Ｅ玫瑰花环数比对照组多，Ｙ玫瑰花环数比对照组少．急性冬泳锻炼后即刻Ｅ，Ｙ玫瑰花环数增多．提出冬泳增强机体细胞免疫功能是冬泳锻炼增强体质、防病治病的主要机理之一．     

Urochordates carry multiple genes for goose-type lysozyme and no genes for chicken- or invertebrate-type lysozymes

Genome clones and expressed sequence tags (ESTs) from the ascidian Ciona intestinalis and from the larvacean Oikopleura dioica were analysed for the presence of lysozyme-encoding genes. Two genes were found to potentially code for goose-type lysozymes in Oikopleura, while three or possibly more g-type proteins form the lysozyme complement of C. intestinalis, and at least one of these genes from each species is expressed based on EST data. No genes for chicken- or invertebrate-type lysozymes were found in either urochordate species. Consistent with this finding, extracts of Oikopleura animals possessed hydrolysing activity on bacterial cell walls, and this activity was not inhibited in the presence of a known inhibitor of chicken-type lysozyme. A wide range of isoelectric points for the predicted lysozymes from Ciona (pI 4.4, 6.4 and 9.9) and from Oikopleura (pI 5.0 and 8.0) suggests tissue-specific adaptations as well as specific functional roles of the lysozymes. Comparisons of gene structures, encoded sequences, cysteine residue content and their positions in the proteins indicate that the g-type lysozymes of Ciona intestinalis are more closely related to those of vertebrates than are the g-type lysozymes of Oikopleura. Multiple genes from each species may result from separate and lineage-specific duplications followed by functional specialisation.Received 29 June 2003; received after revision 24 July 2003; accepted 29 July 2003     

Hsp90 binds CpG oligonucleotides directly: implications for hsp90 as a missing link in CpG signaling and recognition

CpG motifs originating from bacterial DNA (CpG DNA) can act as danger signals for the mammalian immune system. These CpG DNA motifs like many other pathogen-associated molecular patterns are believed to be recognized by a member of the toll-like receptor family, TLR-9. Here we show results suggesting that heat shock protein 90 (hsp90) is also implicated in the recognition of CpG DNA. Hsp90 was characterized as a binder to oligodeoxynucleotides (ODNs) containing CpG motifs (CpG ODNs) after several purification steps from crude protein extracts of peripheral blood mononuclear cells. This finding was further supported by direct binding of CpG ODNs to commercially available human hsp90. Additionally, immunohistochemistry studies showed redistribution of hsp90 upon CpG ODN uptake. Thus, we propose that hsp90 can act as a ligand transfer molecule and/or play a central role in the signaling cascade induced by CpG DNA. Received 18 December 2002; accepted 6 January 2002 RID="*" ID="*"Corresponding author. B. Agerberth and G. H. Gudmundsson contributed equally to this work.     

基于生物免疫学的入侵检测系统研究

分析了入侵检测系统的生物免疫模型,研究了免疫系统的原理与致病机制以及其中的隐喻机理.针对当前入侵攻击的新特点,就如何避免免疫病理转移造成的各种安全隐患,构建安全、高效、低耗的入侵检测系统提出了解决方案.