Abstract：
:In the human bone marrow the nuclear enzyme terminal deoxynucleotidyl transferase (TdT) is expressed by cells during early stages of lymphocyte differentiation. In order to investigate a possible regulation of lymphopoiesis at this level of differentiation, the relative frequency and the in vitro 3H-thymidine labeling index (3HdT-LI) of TdT-positive bone marrow cells were assessed in patients with different functional activities of the immune system. TdT-positive lymphoid precursor cells could be detected in the bone marrow of all children investigated, including six patients with various forms of immunodeficiency. Neither a transient hyperfunction of the immune system during the immunological rebound after cessation of long-term chemotherapy for acute lymphoblastic leukemia, nor a congenital or acquired hypofunction of the immune system had any detectable influence on the invariably high in vitro 3HdT-LI of TdT-positive bone marrow cells, a phenomenon possibly related to an autonomous and high turnover of this precursor cell compartment in the human bone marrow.
journal_name
Exp Hematoljournal_title
Experimental hematologyauthors
Hirt A,Morell A,Frei H,Imbach P,Wagner HPsubject
Has Abstractpub_date
1988-01-01 00:00:00pages
38-41issue
1eissn
0301-472Xissn
1873-2399journal_volume
16pub_type
杂志文章abstract：OBJECTIVE:The mechanisms of mobilization of hematopoietic stem cells (HSC) from bone marrow to peripheral blood (PB) by cytokines are poorly understood. One hypothesis is that cytokines disrupt cytoadhesive interactions of stem cells with bone marrow stroma. The soluble portion of c-kit (s-kit) binds stem cell factor (...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/j.exphem.2004.01.004
更新日期：2004-04-01 00:00:00
abstract：:Type IV nuclear bodies are classified as true intranuclear inclusions that ultrastructurally contain numerous densely packed 20- to 30-nm osmiophilic granules surrounded by a microfibrillar cortex. In the present study, we have found statistically significant ultrastructural differences in the frequency and size of ty...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1987-02-01 00:00:00
abstract：OBJECTIVE:Regulation of the cell cycle by cyclin-dependent kinase (CDK) activity occurs at multiple levels and is often altered in human cancers. Therefore, CDK activity has been targeted for drug discovery, and a number of small molecules have now been identified as CDK inhibitors. Plant cytokinin analogues with CDK i...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/s0301-472x(02)00894-9
更新日期：2002-10-01 00:00:00
abstract：:Exit of primitive hematopoietic progenitor cells (HPCs) from the G0 phase of the cell cycle in response to in vitro cytokine stimulation is a limiting step in successful ex vivo expansion. Simultaneous DNA/RNA staining with Hoechst 33342 and pyronin Y was used to separate human bone marrow CD34+ cells residing in G0 (...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1998-07-01 00:00:00
abstract：OBJECTIVE:Recruitment of endothelial progenitor cells to the sites of ischemia has recently been suggested as a mechanism of tissue repair. Here we address the hypothesis that the hypoxia-inducible full-length endothelial-monocyte-activating polypeptide II (EMAP II) provides a mechanism to recruit late outgrowth highly...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/j.exphem.2006.05.021
更新日期：2006-08-01 00:00:00
abstract：:Mds1-Evi1 (also known as Prdm3) and Prdm16 are two highly related zinc finger transcription factors that, within the hematopoietic system, are both expressed primarily in hematopoietic stem cells (HSCs). Our laboratory previously found that constitutive Mds1-Evi1 knockout mice are viable, but their HSCs are unable to ...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/j.exphem.2020.04.010
更新日期：2020-05-01 00:00:00
abstract：:Mouse megakaryocyte colonies developed in a fibrin clot culture system were morphologically classified into three types: immature homogeneous (IH), heterogeneous (H), and mature homogeneous (MH) colonies. The colony size (number of megakaryocytes per colony), the ploidy distribution of megakaryocytes in colonies, and ...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1990-06-01 00:00:00
abstract：:The microenvironment (niche) governs the fate of stem cells (SCs) by balancing self-renewal and differentiation. Increasing evidence indicates that the tumor niche plays an active role in cancer, but its important properties for tumor initiation progression and resistance remain to be identified. Clinical data show th...
journal_title：Experimental hematology
pub_type： 杂志文章,评审
doi：10.1016/j.exphem.2018.02.005
更新日期：2018-05-01 00:00:00
abstract：:Pathogenesis of cytomegalovirus (CMV)-induced myelosuppression is not clearly understood and could be related to a direct toxic effect on the marrow progenitors and/or an alteration of the marrow environment. Myeloid progenitors (granulocyte-macrophage colony-forming units, CFU-GM) were not affected by incubation with...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1991-02-01 00:00:00
abstract：:Studies were undertaken to produce monoclonal antibodies directed against the murine receptor for macrophage colony-stimulating factor (M-CSF or CSF-1). Sprague-Dawley rats were injected with lysates prepared from a murine myelomonocytic cell line (RAW cell line) that has high levels of M-CSF receptors. Spleen cells f...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1993-04-01 00:00:00
abstract：:Time-lapse cinemicroscopy was used to observe the development of lymphocyte colonies in a phytohemagglutinin-dependent one-step, two-layer agar culture system. More than 1000 h of culture time were recorded in a total of 14 independent experiments. Blast formation and organization of lymphocytes into highly motile pai...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1985-01-01 00:00:00
abstract：:Malignant osteopetrosis is a disorder characterized by a deficiency in osteoclast number or function. In one animal model of osteopetrosis, the op/op mouse, macrophage colony-stimulating factor (M-CSF) is absent, and the administration of M-CSF corrects the defects. We evaluated the serum of 13 patients with malignant...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
abstract：OBJECTIVE:Mechanisms of T-cell stimulation by Flt3 ligand (Flt3L) and granulocyte-macrophage colony-stimulating factor (GM-CSF) remain unclear. Herein, we compared the effects of Flt3L and GM-CSF on the expansion of dendritic cells (DC) and T-cell subsets and cytokine expression. METHODS:Naïve and effector/memory T ce...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/s0301-472x(01)00722-6
更新日期：2001-10-01 00:00:00
abstract：BACKGROUND:In patients treated with rituximab and alemtuzumab for lymphomas or CLL, antibody-dependent cellular cytotoxicity (ADCC) is a major mechanism of action. Therefore, assessment of ADCC is mandatory to understand the complex mechanisms leading to the anti-lymphoma effects of monoclonal antibodies (mAb). Due to ...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/j.exphem.2006.02.015
更新日期：2006-06-01 00:00:00
abstract：:Germinal center-associated nuclear protein (GANP) is a unique and multifunctional protein that plays a critical role in cell biology, neurodegenerative disorders, immunohematology, and oncogenesis. GANP is an orthologue of Saccharomyces Sac3, one of the components of the transcription export 2 (TREX-2) complex and a m...
journal_title：Experimental hematology
pub_type： 杂志文章,评审
doi：10.1016/j.exphem.2020.08.007
更新日期：2020-10-01 00:00:00
abstract：:Data in this report determined the effect of a single injection of recombinant interleukin 1 alpha (rIL-1) prior to irradiation of B6D2F1 mice on the recovery of colony-forming cells (CFC) at early and late times after sublethal and lethal doses of radiation. Injection of rIL-1 promoted an earlier recovery of mature c...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1988-10-01 00:00:00
abstract：:The reproducibility and utility of an in vitro bioassay for erythropoietin were evaluated, and modifications, including the use of frozen target cells, were made. The assay, based on 3H-thymidine incorporation into phenylhydrazine-treated mouse spleen cells, showed a dose-response curve from 0.2 to 20 mU of sheep plas...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1987-05-01 00:00:00
abstract：:Rats with diets containing 0.2% propylthiouracil (PTU) throughout gestation had progeny with persistent cyanosis and high neonatal mortality. Histological and histochemical studies failed to reveal lung abnormalities in these pups. Studies of the blood of PTU-fed dams demonstrated that hemoglobin, packed cell volume, ...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1982-01-01 00:00:00
abstract：:Patients with cytopenias and a cellular bone marrow can be a diagnostic and therapeutic challenge. Previous reports suggested a role for progenitor assays for diagnosis and predicting response to therapy. We report the results of Burst-forming unit-erythroid (BFU-E) assays in 48 consultative cases of single or multili...
journal_title：Experimental hematology
pub_type： 临床试验,杂志文章
doi：10.1016/j.exphem.2013.04.013
更新日期：2013-09-01 00:00:00
abstract：:When cultured mast cells of (WB X C57BL/6)F1-+/+(WBB6F1-+/+) and WB-+/+(WB) mice were directly injected into the skin of genetically mast cell-deficient WBB6F1-W/Wv mice, mast cell clusters appeared at the injection sites. Although in vitro colony-forming ability is comparable between cultured mast cells of WB mice an...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1988-12-01 00:00:00
abstract：OBJECTIVE:We previously demonstrated a silencing role for signal transducers and activators of transcription 3 (STAT3) in gamma-globin gene regulation in primary erythroid cells. Recently, GATA-1, a key transcription factor involved in hematopoietic cell development, was shown to directly inhibit STAT3 activity in vivo...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/j.exphem.2009.05.004
更新日期：2009-08-01 00:00:00
abstract：:Hepcidin is the key regulator of iron absorption and recycling, and its expression is suppressed by red blood cell production. When erythropoiesis is expanded, hepcidin expression decreases. To gain insight into the stage of erythroid differentiation at which the regulation might originate, we measured serum hepcidin ...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/j.exphem.2015.03.001
更新日期：2015-06-01 00:00:00
abstract：:The history of clonal hematopoiesis (CH) research is punctuated by several seminal discoveries that have forged our understanding of cancer development. The clever application of the principle of random X-chromosome inactivation (XCI) in females led to the development of the first test to identify clonal derivation of...
journal_title：Experimental hematology
pub_type： 历史文章,杂志文章,评审
doi：10.1016/j.exphem.2020.01.008
更新日期：2020-03-01 00:00:00
abstract：:Previous studies in animal models have suggested that bone marrow-derived interleukin-2 (IL-2) activated natural killer (A-NK*) cells can be used to eliminate residual leukemic cells both in vivo and in vitro. As part of initial studies to develop a clinical protocol to exploit this phenomenon in combination with cult...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1993-08-01 00:00:00
abstract：:Myelodysplastic syndromes (MDS) are clonal stem cell diseases of the bone marrow characterized by abnormalities in maturation of hematopoietic cells of all lineages. MDS patients frequently have lower lipids and high rates of apoptosis and p53 (TP53) expression. An association between the reduced lipids in MDS and the...
journal_title：Experimental hematology
pub_type： 临床试验,杂志文章
doi：10.1016/j.exphem.2012.02.003
更新日期：2012-07-01 00:00:00
abstract：:A method for growing erythroid bursts from rat bone marrow cells is presented. The methylcellulose culture technique with rat spleen-conditioned medium was used. Successful growth of rat BFU-E was obtained with 20% fetal bovine serum when anemic rat plasma was used as the source of erythropoietin. Plating efficiency w...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1988-10-01 00:00:00
abstract：OBJECTIVE:The retroviral oncogene v-Cbl causes pre-B cell lymphomas and myeloid leukemias in mice, and its Drosophila homologue is oncogenic, causing enhanced receptor tyrosine kinase signaling. The human Cbl gene resides at 11q23. The aim of this study is to determine the effect of oncogenic Cbl on growth-regulating r...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/s0301-472x(01)00647-6
更新日期：2001-06-01 00:00:00
abstract：:The mechanism of localization, migration, and regulation of hematopoiesis at different stages of ontogeny is not well understood, but may relate to the specific adhesive interactions between hematopoietic stem cells and their microenvironment at different ontogenic stages. We studied the expression of cell adhesion mo...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/s0301-472x(98)00031-9
更新日期：1999-02-01 00:00:00
abstract：:This study is about enrichment of hemopoietic stem cell concentration in mouse bone marrow by use of a glass wool filtration technique. Maximum stem cell concentration was accomplished when filtration conditions were as follows: (1) support medium supplemented to 15% with fresh serum from syngeneic donors; (2) no incu...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：
更新日期：1977-01-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to investigate the effects of interleukin-2 (IL-2) gene-transduced hematopoietic progenitor cells or cytotoxic function and systemic toxicity following syngeneic bone marrow transplantation. MATERIAL AND METHODS:Marrow of 5-fluorouracil pretreated donor mice were transfected wit...
journal_title：Experimental hematology
pub_type： 杂志文章
doi：10.1016/s0301-472x(00)00487-2
更新日期：2000-08-01 00:00:00
