甲基强的松龙对低温保存大鼠肝脏的保护作用

应用Ｗｉｓｔａｒ大鼠肝脏离体灌流模型，用ＣＭＵ—１号液，含有甲基强的松龙的ＣＭＵ—１号液，以及缺血前预用甲基强的松龙后再用ＣＭＵ—１号液分别对肝脏进行灌洗保存。检测ＬＤＨ、ＡＬＴ、肝组织匀浆ＳＯＤ活性和ＭＤＡ含量，并观察肝组织结构。结果表明：甲基强的松龙对低温保存的离体大鼠肝脏具有保护作用     

柴胡及甘草酸对小鼠肝细胞凋亡的影响

目的：研究柴胡（ＲＢ）及甘草酸（ＧＬ）对小鼠肝细胞凋亡的影响。方法：以肝／体重比，肝组织ＤＮＡ含量，组织学改变及原位凋亡细胞ＴＵＮＥＬ反应为指标，观察ＲＢ（１２．０ｇ／ｋｇ）及ＧＬ（５０ｍｇ／ｋｇ）ｉｐ，１次／８ｈ，对撇除苯巴比胺钠（ＰＢ）后引起的小鼠肝细胞凋亡的影响。结果：与对照组Ｃ相比，ＲＢ组小鼠肝／体重比及肝ＤＮＡ含量无明显回落，组织学检查未见明显凋亡改变，ＴＵＮＥＬ反应阴性，ＧＬ组小鼠肝／     

蜂王浆冻干粉对小鼠肿瘤的抑制作用

目的研究蜂王浆冻干粉对小鼠肿瘤的抑制作用.方法按每公斤体重0g、0.25g、0.50g、0.75g设对照及低、中、高3个剂量组,经口给予蜂王浆冻干粉30d后,接种小鼠肉瘤180(S180)和艾氏癌腹水型(EAC)两个瘤种.结果在两次重复的小鼠S180和EAC抑瘤试验中发现中剂量组瘤重明显低于阴性对照组(P<0.05),抑制率可达34%;中剂量组荷瘤小鼠平均生存时间均明显高于对照组(P<0.05).结论蜂王浆冻干粉具有抑制肿瘤的作用.     

前列腺带性结构及其雄激素、雌激素、表皮生长因子受体分布特征的研究

为了探讨雄激素受体（ＡＲ）、雌激素受体（ＥＲ）、孕激素受体（ＰＲ）和表皮生长因子受体（ＥＧＦＲ）在前列腺带性结构中的分布，应用单饱和剂量测定法，分别测定了前列腺移行带、外周带组织中ＡＲ、ＥＲ、ＰＲ和ＥＧＦＲ的含量。结果表明，在１１例前列腺增生症（ＢＰＨ）患者２２份标本中，移行带和周围带ＡＲ全部阳性；尽管ＡＲ浓度个体差异很大，但是两带之间仍有密切相关性（Ｐ＜０００１）；周围带ＡＲ浓度高于移行带，两带ＡＲ浓度均高于ＰＲ、ＥＲ；ＰＲ和ＥＲ在前列腺带性结构上没有明显差异。ＥＧＦＲ在移行带明显高于周围带。研究证实了ＡＲ、ＥＲ、ＰＲ，ＥＧＦＲ在前列腺移行带和周围带上的分布特征。     

人卵巢癌中肿瘤转移抑制基因nm23-H1编码蛋白的表达

目的：探讨人卵巢癌标本中，肿瘤转移抑制基因ｎｍ２３－Ｈ１编码蛋白ＮＤＰＫ－Ａ表达的临床意义及其与预后的关系。方法：应用免疫组织化学抗生蛋白链菌素－过氧化酶结合（Ｓ－Ｐ）法，检测５８例人卵巢癌标本中ｎｍ２３－Ｈ１蛋白水平。结果：ｎｍ２３－Ｈ１蛋白的表达与患者手术时是否有淋巴结及大网膜转移相关（Ｐ〈０．０５），但原发灶与转移灶间的阳性表达率相差不显著；与患者术后生存时间密切相关（Ｐ〈０．０１），术后生     

人酪氨酸羟化酶基因真核表达载体的构建及在哺乳动物细胞中的表达

用限制性内切酶EcoRI从pKS(-)HTH_1切下全长为1.9 kb的人酪氨酸羟化酶基因,在T_4DNA连接酶的作用下连接在真核表达载体pCDNA_3的EcoR Ⅰ位点,构建成重组质粒pcD-NA_3HTH_1,该质粒转染COS-7细胞,免疫荧光组织化学染色证实酪氨酸羟化酶在其中的表达。     

特发性甲状旁腺功能低下（附13例分析）

本文观察分析了13例特发性甲状旁腺功能低下患者、查PTH6例。患者血清中除有本病低血钙、高血磷的固有特征外，其它微量元素也有改变，如血清镁值减低。这与文献[1]的报道相符。碱性磷酸酶2例明显升高。磷廓清率S例降低。肾小管磷重吸收率5例升高。放免甲功：抗甲状腺微粒体2例升高。T细胞亚群1例低于正常值。本病有家族性，与遗传有关。     

Observation on 108 Normal Ophthalmic Arteries in 80 Patients by Digital Subtraction Angiography

By digital subtraction angiography(DSA), the authors made observations on 108 normal ophthalmic arteries in 80 patients with regard to the origins, courses, branching, morphology and anastomoses of the vessels. The merits and demerits of DSA in observing the ophthalmic artery were discussed. Eye Science 1994; 10: 157- 162.     

广东省梅县乡(镇)卫生院卫生人力资源的现状调查分析

乡(镇)卫生院是农村三级医疗预防保健网的中心环节,是我国农村实现“2000年人人享有卫生保健”的关键。本文通过对广东省梅县乡(镇)一级卫生院卫生人力状况的调查分析,结果表明,目前该县乡镇卫生院的机构稳定,卫技人员占编比例合理,年龄较轻,成为今后农村卫生院发展的优势。但存在着卫生技术人员的总体数量不足,素质较差,各类专业技术人员的构成比例失调和层次分布不合理等问题,同时提出了如何加以改善的对策措施。     

Cellular interactions in effector cell generation and tumor regression mediated by anti-CD3/interleukin 2-activated tumor-draining lymph node cells.

Previous studies have demonstrated that progressive growth of the weakly immunogenic MCA 106 murine sarcoma stimulated, in the draining lymph nodes, the production of tumor-sensitized but not fully functional preeffector lymphocytes. These lymphocytes could develop into specific immune effector cells after sequential in vitro activation with anti-CD3 monoclonal antibody and interleukin 2 (IL-2). In this study, we analyzed cellular requirements for in vivo sensitization of preeffector cells, for generation of immune effector cells by the method of anti-CD3/IL-2 activation, and for adoptive immunotherapy mediated by activated cells. By selective depletion of T-cell subsets in vivo, we found that tumor regression after systemic adoptive immunotherapy required the collaboration of activated CD4+ and CD8+ cells. It was further demonstrated that CD8+ immune cells alone could mediate antitumor effects if exogenous IL-2 was provided in vivo. These results suggest that CD8+ cells served as immediate effector cells, whereas CD4+ immune cells provided a helper function via the secretion of IL-2. During in vitro anti-CD3/IL-2 activation, generation of effector cells depended on the collaborative interaction between previously sensitized CD4+ and CD8+ preeffector cells. At the stage of in vitro activation, the addition of IL-2 could not substitute the function of CD4+ cells. We next examined whether the sensitization of preeffector cells in the draining lymph nodes required cellular interactions between CD4+ and CD8+ T-cells. By in vivo depletion of T-cell subsets during tumor growth, we found that CD4+ cells were sensitized independently of CD8+ cells. More interestingly, in vivo sensitization of CD8+ preeffector cells also occurred independently in the absence of a CD4+ helper cell response. The lack of T-cell-T-cell interactions in vivo may explain the failure of effector cell generation during progressive tumor growth. Taken together, these results demonstrate that the anti-CD3/IL-2 activation defines an immune response distinct from many previously described mechanisms of antitumor immune responses.