全反式维甲酸对骨髓纤维细胞的影响

通过纤维细胞集落(CFU-F)的培养,观察了急性早幼粒细胞性白血病(APL)的CFU-F,结果APL 患者较正常骨髓明显低下(4.3±1.63/2×10~5细胞)(n=9);完全缓解后则上升达正常水平(12.4±2.55/2×10~5)。体外试验,维甲酸(RA)加入CFU-F 培养系后,CFU-F 下降为3.11±1.24/2×10~5细胞,明显低于对照组8.5±1.57/2×10~5(P<0.05)。提示RA 对骨髓纤维细胞有抑制作用,此结果可能为RA 治疗骨髓纤维化提供初步依据。     

Abnormal nucleotide pattern in the eosinophils of a patient with acute lymphoblastic leukemia associated with eosinophilia

In this article we present a patient with acute lymphoblastic leukemia (ALL) associated with eosinophilia, in which the eosinophilia preceded a meningeal and bone-marrow relapse of ALL. We analysed the purine and pyrimidine nucleotide content of the eosinophils (92% pure) and compared the nucleotide pattern with that of eosinophils from healthy donors and from patients with eosinophilia not associated with leukemia. The ratios of purine : pyrimidine and of uracil :cytosine nucleotides were decreased compared with those in eosinophils from healthy donors and from patients with eosinophilia with other aetiologies. The total nucleotide concentration was increased, especially the concentration of UDP-sugars and pyrimidine nucleotides.

The decrease in these ratios and the increase in concentration of the nucleotides and the UDPsugars were also detected in leukemic cells of patients with ALL (de Korte et al., Leukemia Res. 10, 389–396 (1986)) compared to normal lymphocytes. We suggest a malignant character of the eosinophils in our patient with ALL associated with eosinophilia, in contrast with the nonmalignant state suggested previously for these cells.     

PETHEMA ALL-93研究结果:成人高危急性淋巴细胞白血病缓解后维持治疗、异基因和自体造血干细胞移植的疗效比较

4背景 近年，成人急性淋巴细胞白血病（acute lymphoblastic leukemia，ALL）诱导完全缓解（complete remission，CR）率可达80％～85％．5年无病生存率（diseases-free survival，DFS）30％-40％。成人ALL预后的改善可能与采用了包括以大剂量甲氨蝶呤联合阿糖胞苷的强烈巩固治疗方案有关．并与根据疾病危险度进行分级分层治疗、根据疾病亚型制定个体化的治疗方案有关。     

Pulmonary Sequestration In A Child With Acute Myelold Leukemia

The article describes a relatively rare congenital anomaly that was difficult to diagnose in a 10-year-old child with acute nonlymphoblastic leukemia. Just at diagnosis of leukemia, the patient showed a pathologic chest radiograph because of a parenchymal thickening at the right lung apex. The presence of bronchopneumonia was suspected, and broad-spectrum antibiotic therapy was started with subsequent antifungal treatment for persistent fever and concurrent chemotherapy-induced marrow aplasia, which did not favor pulmonary infiltrate recovery. Continuous culture tests, including bronchial swab, proved negative for Koch-Weeks bacillus, fungal organisms, and other pathogens. Computed tomography, however, was suggestive of Aspergillus lung involvement, and apical sepmentectomy was performed. The anatomic pathologist suggested the diagnosis of intralobar sequestration. In summary, when pulmonary pathology with an excavation is found in a leukemic child, one must consider the possibility of pulmonary sequestration complicated by an infectious disease.     

乳香提取物对急性非淋巴细胞白血病细胞诱导分化作用

探讨乳香提取物对急性非淋巴细胞白血病诱导分化作用，采用造血祖细胞体外培养技术研究乳香提取物对３６例急性非淋巴白血病细胞诱导分化成熟。结果：诱导分化率ＡＮＬＬＭ３（６７．９±７．９）％；ＡＮＬＬＭ２ａ（５７．９±１１．７）％。ＮＢＴ还原率ＡＮＬＬＭ３（６７．８±３．９）％、ＡＮＬＬＭ２ａ（５９．９±９．５）％。墨汁吞噬功能：ＡＮＬＬＭ３（５６±８．９）％，ＡＮＬＬＭ２ａ（５９．８±８．７）％。结论：乳香提取物对急性非淋巴白血病细胞有诱导分化作用，使之诱导分化成熟，并恢复其功能     

单克隆抗体在淋巴细胞白血病中的临床应用

本实验应用二十一种抗人白细胞分化抗原的单克隆抗体。通过ABC(avidin-biotin peroxidase complex)免疫酶标方法对十二例淋巴细胞白血病病人进行了免疫表型分析。提示单克隆抗体在淋巴细胞白血病病人的临床分型、治疗及预后估计上很有意义。粒、淋双表达白血病其本质不明,因而治疗上至今还没有一个理想的方案。     

急性淋巴细胞性白血病和非何杰金氏淋巴瘤患者外周血淋巴细胞CD2、CD4和CD8mRNA的表达

采用ＲＮＡ斑点杂交技术检测了Ｔ细胞系来源的９例急性淋巴细胞性白血病（ＡＬＬ）和１０例非何杰金氏淋巴瘤（ＮＨＬ）以及１６例正常人外周血淋巴细胞ＣＤ２、ＣＤ４和ＣＤ８ｍＲＮＡ表达水平，发现ＡＬＬ和ＮＨＬ患者ＣＤ２ｍＲＮＡ与正常人相比明显升高，ＮＨＬ患者的ＣＤ４／ＣＤ８比值有极显著性升高。本结果为首次报道。     

慢淋、慢淋伴幼淋细胞增多及毛细胞白血病的临床、形态学和免疫学表型分析

目的：探讨慢性淋巴细胞白血病(CLL)、慢淋伴幼淋细胞增多症(CLL／PL)及毛细胞白血病(HCL)免疫表型特点。方法：应用单克隆抗体(McAb)对45例淋巴细胞白血病进行免疫表型检测，并观察其形态学特点。结果：45例患者中，B—CLL42例(包括5例B-CLL／PL)，T—CLL2例，B细胞型毛细胞白血病(B—HCL)1例。男性患者与女性患者之比为2．3：1，B—CLL与T—CLL之比为20：1。B—CLL患者显示有T-淋系抗原CD5^ ，T—CLL可分别表达CD4^ CD8^-及CD8^ CD4^-，1例B—HCL显示典型的B-淋系抗原阳性，同时免疫电镜淋巴细胞为毛状突起。结论：B—CLL CD5、CDl9、CD20、HLA-DR较特异；B—CLL／PL CD20、CD22、SmIg有一定参考价值；B—HCL除B淋系抗原可表达阳性外，CD25^ 、CD5^-最有诊断鉴别意义;T—CLL可呈现多样性T-淋系免疫标记。免疫表型分析有助于区别T、B—CLL、幼淋及HCL．     

The “graft versus leukemia” effect under conditions of mixed chimeric hemopoiesis

The “graft versus leukemia” effect can be induced in (C57B1/6×DBA) F₁ mice by two transplantations of cell suspensions containing bone marrow cells and splenocytes of (CBA×C57B1/6) F₁ mice and an injection of cyclophosphamide. The recipients of cell allotransplants were characterized by mixed chimeric hemopoiesis. These data outline a new approach to induction of the graft versus leukemia effect, requiring no complete elimination of the recipient's hemopoiesis and characterized by a low probability of lethal graft-versus-host reaction. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 123, No. 5, pp. 562–565, May, 1997