正确运用唯物辩证法的光辉典范--学习江泽民同志"七一"重要讲话

江泽民在庆祝建党八十周年大会上的讲话,始终贯穿着唯物辩证法的认识论和方法论:通过辩证分析建党前后两个八十年的历史,揭示了党的历史使命和历史地位、党赖以生存和发展的基础、党永远站在时代前列的根本在于始终实践"三个代表";运用唯物辩证法原理对"三个代表"内涵作科学阐述.     

Time-dependent immunohistochemical detection of proinflammatory cytokines (IL-1β, IL-6, TNF-α) in human skin wounds

The proinflammatory cytokines interleukin-1beta (IL-1β), interleukin-6 (IL-6) and tumour necrosis factor-alpha (TNF-α) hold important functions in the early and late courses of inflammation, trauma and wound healing. In the present study, human skin wounds due to sharp force (n=105) were collected during surgery and autopsy. The wound age mainly varied from several minutes to 5 h, some specimens aged up to 6 weeks. Control specimens from uninjured skin were available in each case. After preparation of cryostat sections, immunohistochemistry was performed according to the APAAP technique, using monoclonal and polyclonal antibodies. The results were evaluated semiquantitatively. All markers were weakly expressed in normal human skin constitutively. However, the staining pattern changed significantly in vital wounds concerning epidermal layers, subepidermal cells, vessels and sweat glands. IL-1β and IL-6 showed enhanced expression after 15 and 20 min at the earliest (increase of epidermal reactivity). After 30–60 and 60–90 min, respectively, marked expression was observed with these markers. Similar alterations were detectable with TNF-α after 15 and 60–90 min. The reactivity of all three markers persisted over several hours, then decreased to basal levels again and sometimes reappeared after days and in granulation tissue. Leukocytes reacting with IL-1β and IL-6 appeared after approximately 2 h. Conclusion: proinflammatory cytokines can serve as a useful tool for the estimation of vitality and wound age, in particular in the early post-traumatic interval prior to leukocyte reaction. Autolysis did not play a role in the samples investigated (postmortem interval up to 8 days). Problems could sometimes rise from constitutive expression. Therefore, it is recommended to examine control samples from the same individual and to compare the reactivity with wound specimens.     

中国(辽宁地区)汉族人群血清H因子多型性分布的研究

应用超薄层聚丙烯酸胶凝胶等电聚焦电泳结合免疫印迹技术，首次报导中国（辽宁地区）汉族人群血清中H因子遗传多型性的分布。HF的基因频率：HFA=0．4828，HFB=0．5172，按Hardy-Weinberg法则进行吻合度检验，其观察值与期望值一致，并对中国（辽宁地区）与其它人群HF等位基因的差异性做了比较。     

人血痕ORM、Pi、AHSG和GC同步等电聚焦分型

作者在国内外首次建立了血清类粘蛋白、α1－抗胰蛋白酶、α2－HS－糖蛋白和型特异性成份等四种遗传标记同步等电聚焦免疫酶放大分型方法。累计个人识别机率为0．9878，非父排除率为0．6648，是国内外已报道同步电泳分型方法中鉴别能力最高的。本法可对稀释度为1／100的血清进行分型。对于室温保存四周的血痕盯全部正确分型。除Pi外，ORM、AHSG和GC三种遗传标记至少在24周之内皆可正确分型。     

FAM羧基荧光素修饰引物检测D1S80基因座遗传多态性

目的建立用FAM羧基荧光素修饰引物检测DIS80基因座的方法。方法采用5-FAM修饰引物,通过PCR扩增,DNA全自动遗传分析仪进行片段长度分析,检测129名黑龙江汉族无关个体DIS80基因座遗传多态性。结果在所调查的129名黑龙江汉族无关个体样本中,DIS80基因座有21个等位基因,56个基因型,基因频率在0.0039-0.1667之间。杂合度(H)为0.9097,个人识别机率(PD)为0.9691,非父排除概率(PE)为0.8113,多态性信息总量(PIC)为0.8988。群体内基因型频率分布符合Hardy-Weinberg平衡。结论FAM羧基荧光素修饰引物检测DIS80基因座的方法,简便、灵敏、稳定性好,DIS80基因座用于个体识别及亲权鉴定具有很高的实用价值。     

α_2HS-糖蛋白、α_1-抗胰蛋白酶和GC的同步分型与应用

作者应用等电聚焦技术,建立了同步检测α_2HS-糖蛋白表型,α_1-抗胰蛋白酶亚型和GC亚型的方法。本法累计个人识别机率为0.9701,累计非父排除率为0.5811、是国内外同步电泳分型史鉴别效率最高的方法。在11例亲子鉴定中应用本法取得了满意结果。     

精斑中磷酸葡萄糖变位酶(PGM_1)及其亚型的电泳分型

本文用淀粉凝胶电泳法和 PAGIEF 对精斑 PGM_1普通型及亚型进行了检测。169份精液斑的 PGM_1分型结果是:PGM_1 1—1 87例;PGM_1 2—1 66例;PGM_1 2—2 16例,其中31例同一个体红细胞及精液 PGM_1分型的结果完全一致。研究了138例不同精子数精斑的 PGM_1型,发现精子数的多少对分型无影响。亚型检测结果与红细胞一样可分10型。     

D3S1358等7个DNA位点的荧光法在法医学中的应用

报道了D3S1358、D16S539等7个DNA位点的复合扩增和四色荧光分析技术。经310自动测序仪检测7个位点 ,实现了STR位点同步扩增和自动检测目的。同一性实验表明 ,同一个体肌肉、血液、唾液和头发等组织STR位点基因型完全一致。对2个四代家系、3个三代家系的调查结果表明 ,这些位点符合孟德尔遗传定律。D3S1358、D16S539等7个位点对陈旧、微量的检材适用性很强,灵敏度达75pg ,在法医个人识别和亲子鉴定中有着重要意义     

红细胞EsD和PGM_1的同步电泳分型及其在上海地区的分布与频率

用 pH7.4的 Tris-马来酸缓冲系统和混合淀粉凝胶同步检测血液及血癌中 EsD 和 PGM_1的表型,获得良好的分型效果。EsD 和 PGM_1的图谱区带平直、狭窄、清晰。各种表型之间差异著,极易区分容易发现稀有表型。我们在上海地区居民中检查了390人的 EsD 表型和724人的 PGM_1表型,其分布与其基因频率详见附表。在检测尸体血及尸体血痕时,发现一例尸体血和一例尸体血痕的 PGM 1活性明显增强,前者尚显现了一条额外的同工酶区带。