尿毒症患者急性缺氧状态下血清红细胞生成素浓度的变化

７例尿毒症贫血患者在自发急性缺氧状态下，其血清红细胞生成素（ＥＰＯ）浓度显著提高（平均７倍），且与ＰＯ２呈负相关。缺氧状态纠正后血清ＥＰＯ浓度下降。提示尿毒症贫血患者的ＥＰＯ氧依赖调控系统功能尚存在，但处于不敏感的低调状态。进一步了解其机遇，则可能通过促进内源性ＥＰＯ的生成，有助于悄毒症贫血的治疗。     

积分加权法评价磷化学烧伤实验病理的意义与应用

目的：积分加权法在病理组织学检查中的应用，方法：在常规病理描述基础上，采用积分加权法将病理结果予以定量，综合评价致伤后实验动物的主要脏器，结果：实验动物同等面积的磷酸烧伤各脏器积分降低，钙治疗后则显著改善，均与其它方面报道的资料一致，结论：积分加以数值使各脏器损伤程度一目了然，对不同脏器间的损伤情况有可比性，从而有助于了解主要受损脏器与总体的关系以及药物的治疗效果。     

超抗原SEA抗肿瘤研究进展

超抗原是指一些细菌或病毒编码的蛋白分子，只需极低浓度即可激活大量的淋巴细胞克隆．作为一种强大的T细胞激活剂，超抗原成为肿瘤免疫治疗研究的热点之一．本文对其特性及目前的研究进展作一综述．     

受体选择与B细胞自身免疫耐受

基因重组机制的存在使得B细胞抗原受体呈现高度的多态性,这其中包括大量的自身反应性抗原受体;而免疫细胞在发育过程中对自身抗原耐受状态的形成正是为了避免对机体自身的攻击。传统认为这主要缘于自身反应性细胞或克隆的死亡性清除,即细胞选择;近年来随基因操作技术特别是转基因及基因靶导技术的成熟运用,发现这些被“清除”的细胞并非全部死亡,其中大部分是通过重新启动基因重组机制以一种“受体选择”(Receptor selection)的方式,以重组的新的非自身反应性受体替代了原自身反应性受体;同时受体选择尚参与成熟B特异性的调整,以使正参与免疫反应B细胞受体更加多样化从而适应当前免疫应答的需要。     

Active-specific immunotherapy for melanoma

Twenty-five patients with metastatic melanoma were treated with a therapeutic vaccine ("theraccine") consisting of allogeneic melanoma lysates and a novel adjuvant, DETOX (Ribi ImmunoChem Research, Inc, Hamilton, MT). Each patient received 200 antigenic units (20 x 10(6) tumor cell equivalents) subcutaneously on weeks 1, 2, 3, 4, and 6. Clinical responses included one complete remission, three partial remissions, and a long-term (17-month) stability. Two other patients had mixed responses, with partial remissions of numerous subcutaneous nodules. Sites of responsive disease included primarily the skin, but ileal, breast, and a liver metastasis also responded. Removal of residual lesions in patients with partial remissions, whose other lesions had disappeared during treatment, led to long disease-free survivals. The median duration of remission was 17 months, with four of the five responders alive for at least 24 months after treatment. An increase in precursors of cytolytic T cells (CTLs) correlated with clinical outcome, when complete, partial, and mixed responses and long-term stability were considered. The CTLs recognized melanoma-associated antigens on many cell lines, but not other types of tumor or normal lymphocytes. Skin-test reactivity to melanoma antigens and serum antibodies against the melanoma cells was unrelated to clinical response. Toxicity was minimal, restricted largely to minor soreness at the site of injection. Only five patients, four of whom were treated with repeated courses, developed severe granulomas. These results confirm that active-specific immunization with allogeneic lysates of melanoma administered with the adjuvant DETOX can induce immunity to melanoma, and can induce regressions of disease in a proportion of patients with metastatic disease with little toxicity.     

新工艺制备的β—TCP陶瓷小鼠肌肉内种植后的变化

目的：检测新工艺制备的β－磷酸三钙（β－TCP）的生物相容性,方法：将自制β－TCP植入小鼠股后肌袋。术后24,72h,1,2,4,8周分别取材做组织学检查,2,4周取材部分标本做扫描电镜（SEM）观察。结果：随着时间推移,β－TCP逐渐被纤维组织分割包围,但是无软骨,骨和坏死组织形成,结论：新工艺制备的β-TCP具有良好的组织相容性。     

Change of Coagulation Factor Ⅷ and Antithrombin Ⅲ Activity in Bank-Stored Blood

Blood storage and blood transfusion have beenimportantclinical work.In recentyears,the demandfor the quality of blood transfusion is getting higher.Great progress has been made in blood storage tech-nique and more and more reports on change in bloodcomponents during storage have been published.However,reports on dynamic changes in blood com-ponentsin bank- stored blood are stillrare.The paperinvestigated the dynamic change of blood componentsF :c and AT- in blood stored in blood bank un-der…