铁缺乏症与某些微量元素的关系

近年来人们对微量元素尤其铁、铜,锌等在吸收和代谢方面的相互影响进行了一系列人体调查和动物实验,但结果各异。为此,我们对铁缺乏症患儿血清中的钼(Mo)、锌(Zn)、锰(Mn)、镉(Cd)铁(Fe)、铅(Pb)、铜(Cu)、镍(Ni)、钛(Ti)、钴(Co)、锂(Li)、铬(Cr)等十二种微量元素进行了测定,报告如下。     

EXEL 1900 SUPER CT机管电流反馈电路故障 1例

1 故障现象曝光时,高压继电器一上电立即掉电,无法上高压。进入高压检测系统,仍然无法曝光,同时有“ !”出现。微机检修提示：阴、阳极电流差别太大。 2 故障检修 2.1 首先检查管球灯丝。发现大灯丝 (正使用 )阻值正常。说明灯丝未断,球管基本正常。 2.2 在灯丝未断的情况下,能够导致阴、阳极电流差别大的原因很多：例如高压控制柜的控制线路出现问题以及高压油箱内任一部分的爬弧、打火都可以产生该故障。 2.2.1 检查高压控制柜。将其内控制球管阴、阳极电流的两块控制板互换 (此两板完全相同 )。开机发现故障现象依旧。基本说明两控制板没有问题。     

浅谈关于PQ5000VCT机球管的维护保养

我院自2000年5月引进原美国Picker公司生产的PQ5000V单螺旋CT机,至今机器运转一直比较稳定。我们在2002年5月更换了一只Dunlee5.0 M球管,至2004年5月,总曝光近81万曝光秒,现将我们在球管维护保养方面的一些体会叙述如下,供各位同行参考。1球管冷却1.1按照机器散热要求,机架散热5300kcal/h(1cal=4.1868J),稳压器散热3300 kcal/h,机架、稳压器都在扫描间内。我们安装了制冷量9000 kcal/h的空调设备,24小时制冷运转,保证了扫描间温度在(18~22)℃之间,为球管冷却创造优良的外部环境。1.2该机机架内部球管冷却分两部分1.2.1球管外接油循环系…     

THE EFFECT OF STEM CELL FACTOR, INTERLEUKIN-6 AND ERYTHROPOIETIN ON EXPANSION OF CD34~ CELLS FROM HUMAN UMBILICAL CORD BLOOD

CD34 cells from human umbilical cord blood were purified by Dynal beads M-450 CD34 immunoselection system and cultured in the presence of various cytokines alone or in combination, including stem cell factor (SCF), interleukin-6 (IL-6) and erythropoietin (EPO). The results revealed that: (D In methylcellulose culture, the plating efficiencies of purified cord blood CD34 cells were much different when stimulated by various cytokines. IL-6 alone had the lowest colo-ny yield, while the combination of SCF, IL-6 and EPO had the highest yield. ② In the suspension culture, IL-6 alone or IL-6 EPO had little expanding effect on cord blood CD34 celis, the other cytokine combinations could expand cord blood CD34 celis at different Ievels. Among them, the combination of SCF, IL-6 and EPO had the maximal expanding effect on cord blood CD34 celis, the number of progenitor celis peaked at day 21, about 29-fold increase and nucleated celis increased approximately 3676-fold at day 28. The expanding effect of the     

学龄前儿童红细胞免疫功能初探

目前对学龄前儿童红细胞免疫功能的研究尚少。我们检测了济南地区部分学龄前儿童的红细胞免疫功能,现报告如下。 1.资料和方法:本组152例,年龄3～7岁,其中3岁18例,4岁30例,5岁42例,6岁35例,7岁27例。同时取30例正常献血员为对照组。致敏酵母菌及未致敏酵母菌冻干试剂由上海长海医院(免疫室)提供。 方法:C_2b受体花环试验及免疫复合物花环试验均参照郭峰法。 2.结果:见附表。结果显示儿童C_3b受     

强力化／放疗加自体骨髓移植术对实体瘤的疗效（附20例报告）

用强力化、放疗加自体骨髓移植术治疗恶性实体瘤20例,其中包括恶性淋巴瘤、骨肉瘤和妇产科肿瘤各6例;肾母细胞瘤和脑胶质瘤各1例。经治疗后完全缓解4例,有效11例,无效5例。手术相关死亡率10%。对本法治疗上述肿瘤的疗效作了简要评价。     

应用速率散射浊度法测定小儿铜蓝蛋白含量

铜蓝蛋白(CER)是每个分子含8个铜原子的蛋白;测定其含量不仅能了解铜代谢的生理和病理变化,且对某些疾病的诊断与鉴別诊断有重要意义。我们应用速率散射浊度法测定了158例健康儿童和3种疾病患儿的血清铜蓝蛋白,现将结果报告如下。     

HUMAN UMBILICAL CORD BLOOD TRANSPLANTATION IN 4 CASES WITH ADVANCED SOLID TUMORS

Four patients with solid tumors were treated by means of highdose chemotherapy and HLA-mismatched multi-cord blood transplantation.Ofthem,3 reached complete remission,1 got fair response with tolerant side-effects.No or a little graft-versus-host reaction(GVHR)were observed.Donor cellengraftments were documented in 2 patients by cytogenetic analysis and deter-mination of hemoglobin F of the peripheral blood.Recurrent diseases wereconfirmed clinically on day 210(4 year-old girl with liposarcoma)and day 90(11 year old boy with Non-Hodgkin′s Lymphoma).These results demonstratedthat HLA-mismatched multicord blood transfusion could rescue the marrowsuppression of patients treated with myeloablative chemotherapy with no or a littleGVHR,and suggested that muIticord blood stem cells might be engrafted in asingle patient without consideration of HLA-identical.Therefore,cord blood mayprovide a rich hematopoietic resources.Further studies are needed to confirmour observation.     

脐血移植治疗难治性儿童白血病

目的：研究用ＨＬＡ不合多个脐血移植治疗难治性儿童白血病。方法：选择难治性白血病患儿，给予强烈化学治疗杀灭残存白血病细胞，再用多个脐血混合移植解救处于严重抑制状态的骨髓，以缓解白血病，延长生命。结果：治疗６例，年龄２５～１６岁，均为男性。用ＶＡＣ或ＡＶ方案化疗后，约１１ｄ外周血颗粒细胞降至零。输注脐血后平均１３ｄ外周血白细胞升至１０×１０９／Ｌ，６０ｄ内骨髓象正常，全部患者达到完全缓解。随诊１～４年，３例死亡，３例分别存活３６、４４、２０个月。结论：混合脐血移植对难治性白血病有较好疗效，其治疗作用机理值得进一步探讨。     

造血生长因子的临床应用

近年来,重组DNA技术已能生产5种造血生长因子,包括促红细胞生成素(EPO),粒—巨噬细胞克隆刺激因子(GM—CSF),粒细胞克隆刺激因子(G—CSF),巨噬细胞克隆刺激因子(M—CSF)及白细胞介素Ⅲ(IL—3)。其中EPO、