Abstract:
:Megakaryocytic (Mk) cell maturation involves polyploidisation, and the number of platelets produced increases with Mk DNA content. Ploidy levels in cultured human MK cells are much lower than those observed in vivo. This study demonstrated that adding the water-soluble vitamin nicotinamide (NIC) to mobilised peripheral blood CD34+ cells cultured with thrombopoietin (Tpo) more than doubled the percentage of high-ploidy (> or = 8N) MK cells. This was observed regardless of donor-dependent differences in Mk differentiation. Furthermore, MK cells in cultures with NIC were larger, had more highly lobated nuclei, reached a maximum DNA content of 64N (vs. 16N with Tpo alone), and exhibited more frequent and more elaborate cytoplasmic extensions. NIC also increased the ploidy of cultured primary murine MK cells and a cell line model (CHRF-288) of Mk differentiation. However, NIC did not alter Mk commitment, apoptosis, or the time at which endomitosis was initiated. Despite the dramatic phenotypic differences observed with NIC addition, gene expression microarray analysis revealed similar overall transcriptional patterns in primary human Mk cultures with or without NIC, indicating that NIC did not disrupt the normal Mk transcriptional program. Elucidating the mechanisms by which NIC increases Mk maturation could lead to advances in the treatment of Mk and platelet disorders.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Giammona LM,Fuhrken PG,Papoutsakis ET,Miller WMdoi
10.1111/j.1365-2141.2006.06341.xsubject
Has Abstractpub_date
2006-11-01 00:00:00pages
554-66issue
4eissn
0007-1048issn
1365-2141pii
BJH6341journal_volume
135pub_type
杂志文章abstract::A new method of in vivo bioassay for erythropoietin (EPO) is described. This method is based on the measurement of immature reticulocytes in EPO-treated mice using an automatic microcell counter, and is simpler and more precise than the existing methods of polycythaemic mouse assay and starved rat assay. Normal mice w...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1991.tb08595.x
更新日期:1991-03-01 00:00:00
abstract::Seventy-seven normal donors underwent leukapheresis for peripheral blood progenitor cell collection beginning on day 4 (n = 45) or day 5 (n = 32) of filgrastim mobilization (12 micrograms/kg/d). The two groups were comparable for age, weight, blood volumes processed during leukapheresis and target CD34+ cell dose to b...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1996.d01-1747.x
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abstract::In previously reported cases, congenital deficiency of coagulation factor XIII has been found to result from the absence of the enzymatically active A subunits. In the family reported here two members were found to be heterozygous for an unstable A subunit which, in the homozygous state, or in the heterozygous state w...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:
更新日期:1981-06-01 00:00:00
abstract::Recombinant factor VIII variants with overlapping deletions spanning the region Lys713-Ile1668 have been expressed in mammalian cells, and analysed for biological activity both in vitro and in vivo. Two distinct assay systems were used to measure the activity in vitro. The one-stage coagulation assay served to assess ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1993.tb08656.x
更新日期:1993-09-01 00:00:00
abstract::Prolyl hydroxylase (PH) is an important enzyme in collagen synthesis. It is required for the hydroxylation of prolyl residues in peptide chains in collagen synthesis. Serum PH activity was measured in patients with primary myelofibrosis (agnogenic myeloid metaplasia and myelofibrosis with prior history of polycythaemi...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1987.tb02260.x
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abstract::Pituitary tumour transforming gene (PTTG) isolated from pituitary tumour cells transforms cells in vitro and causes in vivo tumour formation. PTTG is expressed in several human tumours and cell lines. In normal adult tissues, the testis expresses abundant levels of PTTG mRNA comparable to that found in tumour cells. A...
journal_title:British journal of haematology
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abstract::Graft-versus-host disease (GVHD) remains a significant complication in patients undergoing allogeneic stem cell transplantation (SCT) using a reduced intensity conditioning regimen. Although T-cell depletion (TCD) reduces the risk of GVHD after a myeloablative conditioning regimen, it is associated with an increased r...
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pub_type: 杂志文章
doi:
更新日期:2000-12-01 00:00:00
abstract::We studied the outcome of 24 peripheral blood stem cell (PBSC) graft recipients, who were T-cell depleted (TCD) with either 20 mg (n = 14) or 10 mg (n = 10) Campath-1H in vitro, in comparison with a retrospective cohort of 23 unmanipulated (UM) PBSC recipients. While the neutrophil engraftment was similar, the platele...
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pub_type: 杂志文章
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journal_title:British journal of haematology
pub_type: 杂志文章,随机对照试验
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abstract::The prevalence of Helicobacter pylori infection and the effect of its eradication on platelet count in 48 Japanese patients with autoimmune thrombocytopenic purpura (AITP), including 40 chronic idiopathic thrombocytopenic purpura (ITP) and eight secondary AITP, were investigated. H. pylori infection was found in 25 IT...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2002.03612.x
更新日期:2002-08-01 00:00:00
abstract::The findings of morphologically dysplastic features in haemopoietic cells in de novo acute myeloid leukaemia (AML) has been named AML with trilineage myelodysplasia (AML/TMDS). We analysed the clinical data, karyotypes, and treatment outcomes of 230 de novo AML patients treated with the Japan Adult Leukaemia Study Gro...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1994-04-01 00:00:00
abstract::We evaluated the additional benefit of Technetium(99)-sestamibi (99mTc-MIBI) scanning in comparison with standard X-ray techniques for multiple myeloma patients either at diagnosis or during follow-up. Between February 2001 and January 2005, 397 whole body scans were acquired. On 229 scans performed at diagnosis, 146 ...
journal_title:British journal of haematology
pub_type: 杂志文章,多中心研究
doi:10.1111/j.1365-2141.2006.06489.x
更新日期:2007-03-01 00:00:00
abstract::Three patients with familial antithrombin III deficiency underwent a trial of prophylactic antithrombotic therapy with stanozolol. An increase in plasma fibrinolytic activity and antithrombin III was seen. Acute venous thrombosis occurred in two patients; in the first patient thrombosis was precipitated by venography ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1984.tb02927.x
更新日期:1984-07-01 00:00:00
abstract::Previous studies have established that protein kinase C-zeta (PKC-zeta) is critical for neuronal cell differentiation. However, the role of PKC-zeta in haematopoietic cell differentiation is less clear. In this study, we have investigated the influence of PKC-zeta overexpression on the phenotype of the human monocytic...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2002.03625.x
更新日期:2002-08-01 00:00:00
abstract::This retrospective study aimed to analyse the impact on overall survival (OS) and event-free survival (EFS) of chimaerism status and kinetics following allogeneic conventional and reduced-intensity conditioning haematopoietic stem cell transplantation, and to compare this with the impact of other well-known factors. W...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2005.05372.x
更新日期:2005-03-01 00:00:00
abstract::Proteasome inhibition induces the accumulation of aggregated misfolded/ubiquitinated proteins in the aggresome; conversely, histone deacetylase 6 (HDAC6) inhibition blocks aggresome formation. Although this rationale has been the basis of proteasome inhibitor (PI) and HDAC6 inhibitor combination studies, the role of d...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.13315
更新日期:2015-05-01 00:00:00
abstract::The question as to whether autologous stem cell transplantation (SCT) after consolidation chemotherapy improves the probability of survival of patients with acute myeloid leukaemia (AML) in first remission has not been settled. Here, we present the results of a phase III study conducted in newly diagnosed adult AML pa...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2005-01-01 00:00:00
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journal_title:British journal of haematology
pub_type: 杂志文章
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更新日期:2017-01-01 00:00:00
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journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2007.06789.x
更新日期:2007-10-01 00:00:00
abstract::In emicizumab prophylaxis, the concomitant therapy using bypassing agents (BPAs) is required for breakthrough bleeding and invasive procedures with attention to thrombotic complications. To predict coagulant effects of BPAs in emicizumab-treated patients with haemophilia A (PwHA) with inhibitor (PwHAwI), blood samples...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.16574
更新日期:2020-09-01 00:00:00
abstract::The CS1 antigen provides a unique target for the development of an immunotherapeutic strategy to treat patients with multiple myeloma (MM). This study aimed to identify HLA-A2(+) immunogenic peptides from the CS1 antigen, which induce peptide-specific cytotoxic T lymphocytes (CTL) against HLA-A2(+) MM cells. We iden...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2012.09111.x
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abstract::Megakaryopoiesis was examined in 10 patients (eight females and two males) with cyclic thrombocytopenia (CT) to investigate the underlying pathogenesis. Numbers of CFU-Meg and megakaryocytes and the mean cytoplasmic area (mean area) of megakaryocytes at the peak, nadir, ascent mid phase, and descent mid phase of the p...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1995.tb05267.x
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abstract::Adult T-cell leukaemia (ATL) is caused by human T-cell leukaemia virus type I (HTLV-I). It has been suggested that cytokines play a role in the development and in the neoplastic cell growth of ATL. However, the precise mechanism involved in this process still remains unclear. Interleukin-21 (IL-21) and its receptor (I...
journal_title:British journal of haematology
pub_type: 杂志文章
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abstract::Mantle cell lymphoma (MCL), a malignancy of B-lymphocytes, has a poor prognosis. It is thus necessary to improve the understanding of the pathobiology of MCL and identify factors contributing to its aggressiveness. Our studies, based on Affymetrix data from 17 MCL biopsies, real-time quantitative polymerase chain reac...
journal_title:British journal of haematology
pub_type: 杂志文章
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abstract::The clonalities in white blood cells (WBC) of blood and nucleated bone marrow cells from patients with refractory anaemia and aplastic anaemia were examined by polymerase chain reaction (PCR) methods using the polymorphic short tandem repeat (STR) on the human androgen-receptor gene (HUMARA). Peripheral blood samples ...
journal_title:British journal of haematology
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doi:10.1111/j.1365-2141.1995.tb08422.x
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abstract::Drug-related neutropenia is a common observation in AIDS patients. Haematological growth factors are therefore increasingly used in combination with myelotoxic agents to reduce the risk of infection and to improve the haematological tolerance of these regimens. We report a case of an AIDS patient with Kaposi's sarcoma...
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abstract::The use of immunochemotherapy has improved the outcome of follicular lymphoma (FL). Recently, complete response at 30 months (CR30) has been suggested as a surrogate for progression-free survival. This study aimed to analyse the life expectancy of FL patients according to their status at 30 months from the start of tr...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章,多中心研究
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更新日期:2019-05-01 00:00:00
abstract::T-cell large granular lymphocytic leukaemia (T-LGLL) is a chronic clonal lymphoproliferative disorder of cytotoxic T lymphocytes which commonly occurs in older patients and is often associated with autoimmune diseases. Among 246 patients with T-LGLL seen at our institution over the last 10 years, we encountered 15 cas...
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更新日期:2020-04-01 00:00:00
abstract::Five monoclonal antibodies have been tested for their ability to bind to myeloid precursor cells in normal human bone marrow. Indirect immunofluorescence and the fluorescence activated cell sorter was used to separate cells according to their reactivity for trial culture in vitro in order to grow granulocyte-macrophag...
journal_title:British journal of haematology
pub_type: 杂志文章
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更新日期:1981-10-01 00:00:00