Abstract:
:Using flow cytometric techniques, we determined the pretreatment distribution of DNA content in propidium iodide-stained leukemic blasts from 205 children with "standard-risk" acute lymphoblastic leukemia (ALL). Risk assignment was based on an initial WBC count less than 100 X 10(9)/L, no thymic mass, no meningeal leukemia, and lymphoblasts lacking sheep erythrocyte receptors or surface immunoglobulin. A single aneuploid leukemic line was detected in 74 cases (36.1%): 70 hyperdiploid and four hypodiploid. For hyperdiploid cases, the DNA index (DI, or ratio of the DNA content of leukemic v normal G0/G1 cells) ranged from 1.06 to 2.0 (median, 1.20). A secondary leukemic line with hyperdiploid cellular DNA content was identified in 21 cases with diploid primary lines. Children whose primary leukemic line showed a DI greater than or equal to 1.16 (n = 57) had significantly better responses to treatment than did those with either a diploid DI (n = 130; P = .002) or values in the range of 1.01 to 1.15 (n = 14; P = .001). The relative risk of failure for hyperdiploid cases with DI greater than or equal to 1.16, corresponding to greater than or equal to 53 chromosomes, was one-third that of the other two groups. Treatment responses of patients with both diploid and hyperdiploid lines were identical to those associated with single diploid lines, but significantly worse than those associated with single hyperdiploid lines with DI greater than or equal to 1.16 (P = .016). The most favorable prognostic variables selected by a Cox proportional hazards model were: DI greater than or equal to 1.16 (P = .001), white race (P = .022), WBC less than or equal to 25 X 10(9)/L (P = .032), age between 2 and 9 years (P = .075), and hemoglobin less than 7.0 g/dL (P = .094). DNA index greater than or equal to 1.16 retained its significant prognostic impact even after adjustment for other variables (P = .001). With the combination of DI greater than or equal to 1.16 and WBC less than or equal to 25 X 10(9)/L, one can identify a group of children with ALL who have a low probability of relapse when treated with current therapy. If they remain disease-free after longer follow-up, it may be advisable to treat them with less intensive, hence less toxic, chemotherapy than patients with higher WBC counts or lower DI values.
journal_name
Bloodjournal_title
Bloodauthors
Look AT,Roberson PK,Williams DL,Rivera G,Bowman WP,Pui CH,Ochs J,Abromowitch M,Kalwinsky D,Dahl GVsubject
Has Abstract,Author List Incompletepub_date
1985-05-01 00:00:00pages
1079-86issue
5eissn
0006-4971issn
1528-0020journal_volume
65pub_type
杂志文章相关文献
BLOOD文献大全abstract::A new combination of total lymphoid irradiation and cyclophosphamide was used prior to bone marrow transplantation in an attempt to achieve decreased rejection rates and graft-versus-host disease. Nine previously transfused patients with severe aplastic anemia received marrow from an HLA-identical, MLC-compatible sibl...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1980-02-01 00:00:00
abstract::The ability to determine the functional capacity of putative human hematopoietic stem cell (HSC) populations requires in vivo assays in which long-term multilineage differentiation can be assessed. We hypothesized that if human fetal bone was transplanted adjacent to a fetal thymus fragment in severe combined immunode...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1995-09-01 00:00:00
abstract::Several patients with clinical features of chronic myeloid leukemia (CML) have fusion of the TEL (ETV6) gene on 12p13 with ABL on 9q34 and express a chimeric Tel-Abl protein that contains the same portion of the Abl tyrosine kinase fused to Tel, an Ets family transcription factor, rather than Bcr. In a murine retrovir...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2001-12-0244
更新日期:2002-06-15 00:00:00
abstract::Numerous studies have reported significant associations between ABO blood group and risk of cardiovascular disease. These studies have consistently demonstrated that thrombotic risk is significantly reduced in individuals in blood group O. Nevertheless, the biological mechanisms through which ABO influences hemostasis...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood.2020005843
更新日期:2020-12-17 00:00:00
abstract::Human herpesvirus 6 (HHV-6) is a potentially immunosuppressive agent that has been suggested to act as a cofactor in the progression of HIV disease. Exposure of human macrophages to HHV-6A or HHV-6B profoundly impaired their ability to produce interleukin 12 (IL-12) upon stimulation with interferon-gamma (IFN-gamma) a...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2002-10-3152
更新日期:2003-10-15 00:00:00
abstract::Unbalanced translocations as well as interstitial deletions of the short arm of chromosome 12 [del(12p)] are found as recurring chromosomal changes in a broad spectrum of hematopoietic malignancies. These changes result in the hemizygous deletion of genetic material from 12p. We mapped a yeast artificial chromosome co...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1995-08-15 00:00:00
abstract::Internal tandem duplication (ITD) of the fms-related tyrosine kinase-3 (FLT3) gene occurs in 30% of acute myeloid leukemias (AMLs) and confers a poor prognosis. Thirteen relapsed or chemo-refractory FLT3-ITD(+) AML patients were treated with sorafenib (200-400 mg twice daily). Twelve patients showed clearance or near ...
journal_title:Blood
pub_type: 临床试验,杂志文章
doi:10.1182/blood-2011-06-363960
更新日期:2012-05-31 00:00:00
abstract::Mature megakaryocytes form structures called proplatelets that serve as conduits for platelet packaging and release at vascular sinusoids. Since the megakaryocyte expresses abundant levels of integrin alpha IIb beta3, we have examined a role for fibrinogen in proplatelet development and platelet release alongside that...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2005-11-011957
更新日期:2006-09-01 00:00:00
abstract::In vitro agar culture patterns of bone marrow cells in acute myeloid leukemia may show several growth patterns, including cultures where no colonies or clusters develop, cultures with varying numbers of clusters and no colonies, or colony and cluster formation with an extremely high ratio of clusters to colonies. Twel...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1979-08-01 00:00:00
abstract::T-cell dysfunction after human hematopoietic stem-cell transplantation (HSCT) is generally attributed to intrinsic T-cell defects. Here we show that the characteristic impaired proliferative responses to polyclonal stimulation of post-HSCT peripheral blood mononuclear cells (PB-MCs) were markedly (4-fold) improved by ...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2004-05-1726
更新日期:2005-05-15 00:00:00
abstract::CD8alpha+ dendritic cells (DCs) represent a functionally distinct DC subset in vivo, which plays a critical role in initiating various cellular immune responses. However, the committed precursor of CD8alpha+ DCs remains to be identified. We reported here that murine splenic CD8alpha+CD11c- lineage phenotype (Lin)- cel...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood.v100.2.569
更新日期:2002-07-15 00:00:00
abstract::We took advantage of the proliferative and permissive environment of the developing preimmune fetus to develop a noninjury large animal model in sheep, in which the transplantation of defined populations of human hematopoietic stem cells resulted in the establishment of human hematopoiesis and led to the formation of ...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2004-01-0259
更新日期:2004-10-15 00:00:00
abstract::T-cell function directly influences several B-cell functions. The effect of T-cell subgroups on B-cell function (DNA synthesis) was evaluated for controls and patients with B-cell type of CLL. Control and CLL intact T cells, T cells with receptors for IgG (T gamma), and T cells without Fc receptors at isolation (T non...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1981-03-01 00:00:00
abstract::We have used a combination of hematopoietic growth factors to induce in vitro granulocytic maturation. A fraction of marrow cells enriched for hematopoietic progenitor cells (CD34+, HLA-DR+) was isolated from normal human bone marrow by monoclonal antibody staining and fluorescence-activated cell sorting. Cells were c...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1995-02-01 00:00:00
abstract::In France, more than 80% of children with Burkitt's lymphoma or Burkitt's leukemia (ALL3) are now cured with the LMB (B-cell non-Hodgkin's lymphoma and B-ALL) protocols of the Société Française d'Oncologie Pédiatrique, but so far, poor results have been obtained in the few adult studies available. We have analyzed the...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1995-02-01 00:00:00
abstract::Although combination regimens have improved outcomes over monotherapy in chronic lymphocytic leukemia (CLL), patients eventually relapse. Combined fludarabine, cyclophosphamide, and monoclonal anti-CD52 antibody alemtuzumab (FCC) provided synergistic cytotoxicity with effective clearing of minimal residual disease. Th...
journal_title:Blood
pub_type: 杂志文章,多中心研究
doi:10.1182/blood-2011-05-351833
更新日期:2011-10-13 00:00:00
abstract::The effect of shear force (depending on shear rate and viscosity of extracellular medium) and hematocrit of RBC suspension on RBC deformation was studied quantitatively using a cone-plate rheoscope with various kinds of cells, ie, partially hemolyzed (PH) cells, density-fractionated intact cells, and diamide-treated c...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1987-03-01 00:00:00
abstract::A model of Protein C (PC) activation in vivo was used to investigate the complexing of activated PC (APC) with its plasma inhibitors, PC inhibitor (PCI) and alpha 1-antitrypsin (alpha 1AT). Chimpanzees were infused with a bolus of activated factor X (F.Xa) together with vesicles of phosphatidylcholine and phosphatidyl...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1990-06-01 00:00:00
abstract::The malignant Reed-Sternberg cell of Hodgkin disease is an aberrant B cell that persists in an immunolgically mediated inflammatory infiltrate. Despite its nonproductive immunoglobulin genes, the Reed-Sternberg cell avoids the usual apoptotic fate of defective immune cells through an unknown mechanism. A likely candid...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:2000-10-15 00:00:00
abstract::The transcription repressor BCL-6 is known to play critical roles in B-cell lymphomagenesis, germinal center formation, and balanced Th1/Th2 differentiation. In macrophages, although BCL-6 has also been shown to regulate the expression of several chemokine genes, its function in other aspects of macrophage biology has...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2004-08-3171
更新日期:2005-02-15 00:00:00
abstract::To elucidate the biochemical basis of megaloblastic hematopoiesis, the cellular content and metabolism of deoxyribonucleoside triphosphates (dNTPs) were investigated using the bone marrow cells from nine patients with untreated vitamin B12 deficiency and one with folic acid deficiency. The marked imbalance among four ...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1982-10-01 00:00:00
abstract::The t(15;17) translocation is specifically observed in patients with promyelocytic leukemia (AML3). The chromosomal rearrangement juxtaposes the retinoic acid receptor alpha (RAR alpha) and PML genes, resulting in PML/RAR alpha fusion transcripts. Our previous studies have shown that a polymerase chain reaction (PCR) ...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1992-06-15 00:00:00
abstract::Juvenile chronic myelocytic leukemia (JCML) is a rare disorder of early childhood. Characteristic of JCML are the progressive appearance of high levels of fetal hemoglobin (HbF), reflecting a true reversion to a fetal type of erythropoiesis, and the presence of colony-forming cells able to grow in vitro spontaneously ...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1995-07-01 00:00:00
abstract::Several primary murine and human B lymphomas and cell lines were found to constitutively express high levels of the activated form of c-jun N-terminal kinase (JNK), a member of the mitogen-activated protein (MAP) kinase family. Proliferation of murine B lymphomas CH31, CH12.Lx, BKS-2, and WEHI-231 and the human B lymp...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2004-10-3819
更新日期:2005-08-15 00:00:00
abstract::IL-12 exerts several regulatory effects on natural killer (NK) cells by activating IL-12 signaling. IL-12 signaling is tightly auto-regulated to control its onset and termination, with prolonged IL-12 treatment resulting in IL-12 hyporesponsiveness. However, the mechanisms underlying IL-12 auto-regulation are still un...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2011-05-356162
更新日期:2011-12-22 00:00:00
abstract::Angiotensin I-converting enzyme (ACE) inhibitors can affect hematopoiesis by several mechanisms including inhibition of angiotensin II formation and increasing plasma concentrations of AcSDKP (acetyl-N-Ser-Asp-Lys-Pro), an ACE substrate and a negative regulator of hematopoiesis. We tested whether ACE inhibition could ...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2003-11-3828
更新日期:2004-08-15 00:00:00
abstract::Interleukin-15 (IL-15) induces proliferation and promotes cell survival of human T and B lymphocytes, natural killer cells, and neutrophils. Here we report the constitutive expression of a functional IL-15 receptor (IL-15R) in 6 of 6 myeloma cell lines and in CD38(high)/CD45(low )plasma cells belonging to 14 of 14 pat...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:2000-01-15 00:00:00
abstract::Previous studies have indicated that a candidate tumor suppressor gene resides telomeric of the RB1 gene at 13q14, a region that is commonly deleted in B-cell chronic lymphocytic leukemia (B-CLL). In this study, we have evaluated the frequency and minimal region of overlap for 13q deletions in malignant cells from var...
journal_title:Blood
pub_type: 杂志文章
doi:
更新日期:1995-09-01 00:00:00
abstract::Systemic inflammation perturbs the bone marrow environment by evicting resident B cells and favoring granulopoiesis over lymphopoiesis. Despite these conditions, a subset of marrow B cell remains to become activated and produce potent acute immunoglobulin M (IgM) responses. This discrepancy is currently unresolved and...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2015-03-635805
更新日期:2015-09-03 00:00:00
abstract::Male recipients of transplants from female (F-->M) hematopoietic stem cell donors represent a special group in whom donor T cells that are specific for recipient minor histocompatibility antigens encoded by Y-chromosome genes may contribute to a graft-versus-leukemia (GVL) effect and to graft-versus-host disease (GVHD...
journal_title:Blood
pub_type: 杂志文章
doi:10.1182/blood-2003-07-2603
更新日期:2004-01-01 00:00:00