Abstract:
:Previous studies have shown that thymosin (fraction 5) is able to induce surface differentiation markers on normal murine bone marrow T-cell precursors. Phorbol ester (TPA) promotes differentiation of human leukaemic lymphoblasts as assessed by changes in phenotypic surface markers and terminal deoxynucleotidyl transferase (TdT) activity. Changes in levels of purine degradative enzymes occur during T-cell maturation with a fall in adenosine deaminase (ADA) and a rise in purine nucleoside phosphorylase (PNP) and 5'nucleotidase (5'NT) activities. We have now investigated the effect of both thymosin (fraction 5) and TPA on a human leukaemic T-cell line (MOLT-3) in expression of the surface antigenic markers NAI/34 (a marker of immature thymocytes) and OKT11 (which corresponds to the sheep erythrocyte receptor) and of TdT, ADA, PNP and 5'NT. Thymosin (after 96 h incubation) significantly reduced the number of cells positive for NAI/34 from 76.0 +/- 5.0% (mean +/- S.D.) to 51.3 +/- 9.3% (p less than 0.01) but caused no significant change in the percentage of TdT or OKT11 positive cells. ADA levels were significantly reduced (p less than 0.02) and 5'NT levels were significantly elevated (mean increase 303 +/- 142% of control, p less than 0.001) but the increase in PNP level (108 +/- 16.8% of control) was not significant (p greater than 0.05). On the other hand, TPA (after 96 h incubation) significantly reduced cells positive for NAI/34 from 76.0 +/- 5.0 to 30.0 +/- 9.8% and for TdT from 81.7 +/- 6.5 to 17.3 +/- 4.4% and increased OKT11 positive cells from 67.3 +/- 5.5 to 89.0 +/- 2.8% (p less than 0.001). TPA caused no significant change in 5'NT or ADA levels (p greater than 0.05), but an increase in PNP level to 158 +/- 12.9% of control (p less than 0.02). The present study demonstrates for the first time that the normal thymic hormone, thymosin is capable of inducing differentiation changes in thymic derived human leukaemic cells. In addition, it shows that different inducing agents may cause different patterns of differentiation changes in leukaemic cells.
journal_name
Leuk Resjournal_title
Leukemia researchauthors
Ho AD,Ma DD,Price G,Hoffbrand AVdoi
10.1016/0145-2126(83)90072-3subject
Has Abstractpub_date
1983-01-01 00:00:00pages
779-86issue
6eissn
0145-2126issn
1873-5835journal_volume
7pub_type
杂志文章abstract::Stem cell factor (SCF) is a growth factor that promotes the survival, proliferation, and differentiation of hematopoietic cells. SCF and its receptor, Kit, are normally present in both cell surface and soluble forms. Both forms of Kit can bind SCF. However, the function of soluble Kit is unknown. In order to determine...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/s0145-2126(00)00122-3
更新日期:2001-05-01 00:00:00
abstract::Immunophenotypic classification of the acute leukemias (AcL) is of well documented value in those of lymphoid or uncertain origin and of increasing importance in those of nonlymphoid origin. Most of these studies have been performed on viable cell suspensions. To study the efficacy of a simpler immunohistochemical app...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/0145-2126(87)90080-4
更新日期:1987-01-01 00:00:00
abstract::Hodgkin and Sternberg Reed (H and SR) cells, the putative malignant cells of Hodgkin's disease carry regularly T-cell activation antigens, like CD30 and CD25 (low affinity IL-2 receptor). We have investigated the Hodgkin cell line L540, bearing characteristic markers of H and SR cells for its expression of the low aff...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/0145-2126(90)90107-k
更新日期:1990-01-01 00:00:00
abstract::Pericardial effusion is a rare but potentially life-threatening complication of chronic myelomonocytic leukemia. A case of a 70-year-old female with CMML is reported, who developed a severe pericardial effusion after an initially stable course of disease. She underwent pericardiocentesis and subsequent intracardial in...
journal_title:Leukemia research
pub_type: 杂志文章,评审
doi:10.1016/s0145-2126(00)00078-3
更新日期:2000-12-01 00:00:00
abstract::Up to 30% of patients with acute myeloid leukemia (AML) and abnormal cytogenetics have persistent cytogenetic abnormalities (pCytAbnl) at morphologic complete remission (mCR). We hypothesized that the prognostic significance of pCytAbnl in patients undergoing allogeneic hematopoietic stem cell transplantation (HSCT) i...
journal_title:Leukemia research
pub_type: 临床试验,杂志文章
doi:10.1016/j.leukres.2014.11.007
更新日期:2015-01-01 00:00:00
abstract::With Percoll density gradients, blasts from peripheral blood and bone marrow could be separated with a significant enrichment, and very often with a high degree of purity. This allowed a study of selected cases, where the separated sample exhibited chromosome abnormalities and/or an abnormal DNA content distribution (...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/0145-2126(85)90037-2
更新日期:1985-01-01 00:00:00
abstract::AKT1 is the human homolog of the v-akt oncogene. AKT1 has two distinct protein domains, one serine/threonine kinase domain and one pleckstrin homology (PH) domain. We studied the expression and activity of AKT1 in hematopoietic cell lines. The expression of AKT1 was constitutive in hematopoietic cells of various stage...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/s0145-2126(97)00055-6
更新日期:1997-09-01 00:00:00
abstract::Myelodysplastic syndromes (MDS) and chronic myelomonocytic leukemia (CMML) may be underreported in cancer registries such as the Netherlands Cancer Registry (NCR). Analysis of Dutch medical claims can complement NCR data on MDS and CMML. We analyzed data on 3681 MDS patients and 235 CMML patients aged ≥18 years with i...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/j.leukres.2014.11.025
更新日期:2015-02-01 00:00:00
abstract::Platelet transfusion refractoriness (PTR) is a major adverse event in the management of acute myeloid leukemia (AML). In a series of 897 adult patients with AML receiving intensive chemotherapy, we identified 41 patients (4.8%) with PTR. PTR was more frequently observed in parous women, patients with extra-medullary d...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/j.leukres.2017.08.015
更新日期:2017-10-01 00:00:00
abstract::The tumor promoting agent TPA (phorbol ester; 1.6 X 10(-8)M) was used to induce the differentiation in vitro of B-chronic lymphocytic leukemia (B-CLL) cells from 14 untreated patients. The uninduced phenotype was SIg+, Mrbc+, RFT-1+, RFA-4-, FMC7-. After 72 h incubation with TPA, B-CLL cells became RFA-4+, FMC7+ and l...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/0145-2126(84)90005-5
更新日期:1984-01-01 00:00:00
abstract:OBJECTIVE:Bortezomib-dexamethasone-thalidomide has been reported to be effective in newly-diagnosed multiple myeloma (MM) with an overall response rate of 92% and a CR rate of 18% (Alexanian et al, Hematology 2007;12(3):235-9), but this regimen has not been tested in the Chinese patients. We report here our results tes...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/j.leukres.2009.04.006
更新日期:2009-12-01 00:00:00
abstract::Early T-cell precursor-ALL (ETP-ALL) is a subtype of T-ALL with a poor prognosis in children. We analyzed ETP-ALL compared to conventional T-ALL/LBL in both adults and children to determine any differences in clinical outcomes, based on the following parameters: induction failure, relapse, and survival. Patients with ...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/j.leukres.2013.06.010
更新日期:2013-09-01 00:00:00
abstract::DNAs from chronic granulocytic leukaemia (CGL) and chronic myelomonocytic leukaemia (CMML) were assayed for transforming genes by transfection into NIH 3T3 cells. Foci DNA was tagged with a geneticin-resistance cosmid, then followed through a drug selection and tumorigenicity assay. Activated Ha-ras genes, with point ...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/0145-2126(88)90033-1
更新日期:1988-01-01 00:00:00
abstract::Brazil is a wide country with huge contrasts. Its peculiarities can highlight environmental factors that could influence the frequencies of different cancers. The standard treatment and results achieved from several different areas of the country may not be found in others. The establishment of a national cooperative ...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/s0145-2126(01)00187-4
更新日期:2002-07-01 00:00:00
abstract::High CD23 expression is a hallmark of B-CLL cells. It is lost during in vitro culture and can be reinduced by IL-4, albeit to a lower extent than in normal B cells. To elucidate the events controlling CD23 expression in B-CLL cells, the IL-4 mediated induction of STAT6 was investigated. Western-blot analysis demonstra...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/s0145-2126(99)00191-5
更新日期:2000-04-01 00:00:00
abstract::This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy. ...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/j.leukres.2009.01.006
更新日期:2009-02-20 00:00:00
abstract:BACKGROUND:The median survival of patients with chronic myelogenous leukemia in myeloid blast crisis (MBC-CML) is poor even for patients treated with tyrosine kinase inhibitors (TKIs). DESIGN AND METHODS:We conducted a dose-escalating study of daunorubicin combined to fixed doses of IM (imatinib mesylate, 600 mg/d) an...
journal_title:Leukemia research
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1016/j.leukres.2010.11.004
更新日期:2011-06-01 00:00:00
abstract::Imatinib mesylate (IM) is the treatment of choice in patients with newly diagnosed chronic myeloid leukemia (CML), irrespectively of their age. Nevertheless, information regarding tolerability and responses in advanced-age patients, a subgroup in which co-morbidities and other factors may influence outcome, is scarce,...
journal_title:Leukemia research
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1016/j.leukres.2011.01.017
更新日期:2011-09-01 00:00:00
abstract::The binding of peripheral blood mononuclear cells of 7 patients with plasma cell leukemia to rat lymph node high endothelial venules has been studied in vitro. The mononuclear cells adhered selectively to the high endothelial venules. Their neoplastic origin was proved by in situ demonstration of their monoclonal cyto...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/0145-2126(89)90100-8
更新日期:1989-01-01 00:00:00
abstract::Acute myeloid leukemia (AML) is a heterogeneous disease. Until recently, treatment for patients with AML was limited to induction chemotherapy with cytarabine and anthracycline or hypomethylating agents, and, in some instances, allogeneic hematopoietic stem cell transplant. With the recent approval of new therapies-i....
journal_title:Leukemia research
pub_type: 杂志文章,评审
doi:10.1016/j.leukres.2018.09.001
更新日期:2018-10-01 00:00:00
abstract::To increase our knowledge of the pathogenesis of tumour recurrence, cell membrane phenotypes were determined on bone marrow and extramedullary tumour cells at diagnosis and at relapse in 24 children with lymphoid malignancies. There were 19 patients with acute lymphoblastic leukemia and five with non-Hodgkin's lymphom...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/0145-2126(82)90058-3
更新日期:1982-01-01 00:00:00
abstract::To examine the relationship between viability of acute myelogenous leukemia (AML) blasts in liquid suspension culture and the occurrence of myeloid maturation in culture, total and differential cell counts and viability as determined by trypan blue dye exclusion were followed over 21 days of culture. A significant pos...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/0145-2126(88)90098-7
更新日期:1988-01-01 00:00:00
abstract::Cytogenetic analysis provides important diagnostic and prognostic information for patients with myelodysplastic syndromes (MDS). Prior studies, mostly comprised of small sample sizes, have reported conflicting results while evaluating the usefulness of FISH in addition to G-band karyotyping in MDS. In the current stud...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/j.leukres.2009.09.013
更新日期:2010-04-01 00:00:00
abstract::Medullary dyserythropoiesis with reduced production of erythrocytes is an early and consistent feature of myelodysplastic syndromes (MDS). The mechanism underlying the disturbed red cell proliferation and maturation is presently unknown. In order to study the role of erythropoietic growth factors, we determined by rad...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/0145-2126(91)90025-o
更新日期:1991-01-01 00:00:00
abstract::We conducted an analysis of the effect of monocytosis at diagnosis of CLL on subsequent overall (OS) and treatment-free survival (TFS). Monocyte counts were performed using the Sysmex XE2100 analyser. A monocyte count >0.9 × 10(9)L(-1) at the time of diagnosis was associated with a shortened OS and TFS. Monocytosis at...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/j.leukres.2013.02.020
更新日期:2013-06-01 00:00:00
abstract::c-Myc has been implicated in a variety of hematologic malignancies including Burkitt's lymphoma. Targeting c-Myc driven growth pathways could be therapeutically useful but might require the identification of critical downstream proteins. Here we show that the serine-threonine kinase PBK/TOPK is frequently overexpresse...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/j.leukres.2012.11.010
更新日期:2013-04-01 00:00:00
abstract::Chemotherapy resistance has been considered as a major problem for multiple myeloma (MM) treatment and bone marrow microenvironment plays a crucial role in the MM progression and chemoresistance. Recent studies reported that bone marrow mesenchymal stem cells derived from MM patients (MM-MSCs) revealed various charact...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/j.leukres.2017.07.002
更新日期:2017-09-01 00:00:00
abstract::microRNA profiling of acute myeloid leukemia patient samples identified miR-125a as being decreased. Current literature has investigated miR-125a's role in normal hematopoiesis but not within acute myeloid leukemia. Analysis of the upstream region of miR-125a identified several CpG islands. Both precursor and mature m...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/j.leukres.2013.12.021
更新日期:2014-03-01 00:00:00
abstract::The aim of this study was to evaluate effect of c-KIT mutations on RUNX1/RUNX1T1 fusion transcript expression in patients with t(8;21)-positive AML. Fifty patients diagnosed with t(8;21)-positive AML for recent 10 years were enrolled. Patients with c-KIT mutations tended to achieve a greater than 3-log reduction in RU...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/j.leukres.2013.02.010
更新日期:2013-07-01 00:00:00
abstract::During 2004-2006, two hypomethylating agents (HMAs) were approved for the treatment of myelodysplastic syndromes (MDS) in the United States. We assessed the impact of HMAs on the cost of care and survival of MDS patients, by constructing a cohort of patients who were diagnosed during 2001-2007 (n=6556, age ≥66.5 years...
journal_title:Leukemia research
pub_type: 杂志文章
doi:10.1016/j.leukres.2012.07.020
更新日期:2012-11-01 00:00:00