Abstract:
:Human megakaryocytes have been isolated from marrow obtained from ribs removed at thoracotomy. All but one of the patients had normal pre-operative platelet and leucocyte counts. Megakaryocytes averaged 0.37% of all cells in marrow cell suspensions from nine consecutive subjects. A 283-fold purification (to 10.3%) was achieved by a density gradient centrifugation followed by two successive velocity sedimentations at unit gravity. The net yield, 12 800 megakaryocytes per specimen, was sufficient for many kinds of morphological study. Bright-field, phase contrast, and electron microscopy were used to characterize the younger and smaller megakaryocytes. Ploidy analyses were carried out on 100--235 megakaryocytes per specimen; 8N was the predominant ploidy class in isolated megakaryocyte populations from three individuals. The mean megakaryocyte diameter was 24 micrometers in three other specimens and the range was 10--48 micrometers. This data had a normal distribution and overlapped minimally with the size range of all other marrow cells. The presence of a distinct size threshold (at 11.5 micrometers) implied that size alone may be a sufficient objective criterion for identification of human megakaryocytes.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Levine RFdoi
10.1111/j.1365-2141.1980.tb07168.xsubject
Has Abstractpub_date
1980-07-01 00:00:00pages
487-97issue
3eissn
0007-1048issn
1365-2141journal_volume
45pub_type
杂志文章abstract::Immunophenotypic studies, fluorescence in situ hybridization (FISH) and conventional karyotyping were used to define the clinicobiological significance of 14q32 translocations involving the immunoglobulin gene locus (14q32/IGH) in 252 chronic lymphocytic leukaemia (CLL) patients. The following regions were studied: 13...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2008.07227.x
更新日期:2008-08-01 00:00:00
abstract::In vitro culture of hairy cells (HC) (five patients) with alpha IFN (100 U/ml) significantly enhanced MHC and CD22 antigen expression and reduced CD25, sIg and FMC7 positivity, together with consistent but not significant reductions in CD9, 19 and HC2. A sixth patient, who was refractory to the effects of alpha IFN in...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1989.tb07719.x
更新日期:1989-07-01 00:00:00
abstract::B cell receptor (BCR) signalling is an important pathway in diffuse large B cell lymphoma (DLBCL). In response to BCR triggering, normal and malignant B cells secrete the chemokines CCL3 and CCL4 to attract accessory cells to the tissue microenvironment. We measured CCL3 and CCL4 serum concentrations in 102 patients w...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.13659
更新日期:2015-12-01 00:00:00
abstract::Overt ischaemic stroke is one of the most devastating complications in children with sickle cell disease (SCD). The compensatory response to anaemia in SCD includes an increase in cerebral blood flow (CBF) by accessing cerebrovascular dilatory reserve. Exhaustion of dilatory reserve secondary to anaemic stress may lea...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.14424
更新日期:2017-01-01 00:00:00
abstract::The contribution of red cell size (mean cell volume) to the clinical and haematological manifestations of homozygous sickle cell (SS) disease has been investigated by comparing the features of two groups of patients with low (less than or equal to 80 fl) and high (greater than 95 fl) MCV values after matching for age,...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1981.tb02736.x
更新日期:1981-07-01 00:00:00
abstract::We evaluated the presence of P-glycoprotein (P-gp)-170, multidrug resistance protein (MRP), lung resistance protein (LRP)-56 and Bcl-2 in CD19-positive cells from 100 cases of chronic lymphocytic leukaemia (CLL). P-gp-170 was found in 73% of the CLL cases with no significant difference regarding stage or previous trea...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.0007-1048.2002.03344.x
更新日期:2002-03-01 00:00:00
abstract::Bortezomib in combination with cyclophosphamide and dexamethasone (CyBorD, is a well-established frontline chemotherapy regimen for patients with multiple myeloma, but prospective data on elderly non-transplant eligible patients is limited. A total of 155 patients aged 70 years or older with newly diagnosed multiple m...
journal_title:British journal of haematology
pub_type: 杂志文章,多中心研究
doi:10.1111/bjh.16095
更新日期:2019-11-01 00:00:00
abstract::Isolated trisomy 8 (+8) is a frequent cytogenetic abnormality in the myelodysplastic syndromes (MDS), but its characteristics are poorly reported. We performed a retrospective study of 138 MDS patients with isolated +8, classified or reclassified as MDS (excluding MDS/myeloproliferative neoplasm). Myeloproliferative (...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.15490
更新日期:2018-09-01 00:00:00
abstract::Hereditary angioedema (HAE) is a rare autosomal dominant genetic disorder clinically characterized by recurrent attacks of subcutaneous and mucosal swelling that can result in significant morbidity and even mortality. Several novel therapies introduced since 2008 have dramatically transformed the approach to managemen...
journal_title:British journal of haematology
pub_type: 杂志文章,评审
doi:10.1111/bjh.14059
更新日期:2016-06-01 00:00:00
abstract::Critically ill patients with coronavirus disease 2019 (COVID-19) present with hypoxaemia and are mechanically ventilated to support gas exchange. We performed a retrospective, observational study of blood gas analyses (n = 3518) obtained from patients with COVID-19 to investigate changes in haemoglobin oxygen (Hb-O2 )...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.17128
更新日期:2020-11-01 00:00:00
abstract::Recurrent large-scale somatic copy number alterations (SCNAs), and somatic point mutations can be analysed to stratify patients with chronic lymphocytic leukaemia (CLL) into distinct prognostic groups. To investigate the relationship between SCNAs and somatic mutations, we performed whole-exome sequencing and single n...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.15239
更新日期:2018-06-01 00:00:00
abstract::Globin-gene mapping of DNA from 13 families with normal Hb A2 beta-thalassaemia (both type 1 and type 2) failed to detect any difference from normal in their globin-gene arrangement. We conclude that deletions such as those responsible for gamma beta-thalassaemia or a 'silent' Hb Lepore are not responsible for this ty...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1982.tb07289.x
更新日期:1982-05-01 00:00:00
abstract::The activities of glucose-6-phosphate dehydrogenase (D-glucose-6-phosphate: NADP oxidoreductase, G6PD), 6-phosphogluconate dehydrogenase (6-phospho-D-gluconate: NADP oxidoreductase, 6PGD), hexokinase (ATP: D-hexose 6-phosphotransferase, Hx), lactate dehydrogenase (D-lactate: NAD oxidoreductase, LDH). glutamate oxaloac...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1975.tb01823.x
更新日期:1975-02-01 00:00:00
abstract::The CD34 molecule expressed on haemopoietic progenitor cells contains a large number of epitopes whose expression may be related to the maturation or function of the cells. Monoclonal antibodies specific for different epitopes have been reported to detect different numbers of CD34+ leukaemic blast cells. We wanted to ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1996.7052322.x
更新日期:1996-09-01 00:00:00
abstract::The Brown Norwegian rat transplanted with promyelocytic leukaemic cells (BNML) has been used as a model for human acute myeloid leukaemia. We have previously shown that both the blood supply to the bone marrow and the metabolic rate decrease in relation to the leukaemic development in these rats. Here we have investig...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1998.00801.x
更新日期:1998-07-01 00:00:00
abstract::The French-American-British (FAB) classification assigns patients with myelodysplastic syndromes to the category of refractory anaemia with excess blasts (RAEB) if they have a medullary blast count of 5-20%, and/or a peripheral blast count of 2-5%. The new World Health Organization (WHO) classification subdivides RAEB...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2005.05853.x
更新日期:2006-01-01 00:00:00
abstract::The existence of functional gap junctions between haematopoietic progenitor cells (HPCs) and stromal cells of the haematopoietic microenvironment in the human system is a controversial issue. Primary CD34+ HPCs isolated from leukapheresis products were co-incubated with the human fibroblastoid bone marrow stromal cell...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2000.02385.x
更新日期:2000-11-01 00:00:00
abstract::Umbilical cord blood is an alternative stem cell source for patients without matched family donors. In this study, we examined several parameters that have not been studied in detail -- radiation dose, cell dose, age of mice, and maternal and neonatal characteristics of the cord blood donor -- that affect engraftment ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2001.02904.x
更新日期:2001-07-01 00:00:00
abstract::A primary analysis of the ASPIRE study found that the addition of carfilzomib to lenalidomide and dexamethasone (carfilzomib group) significantly improved progression-free survival (PFS) compared with lenalidomide and dexamethasone alone (control group) in patients with relapsed multiple myeloma (RMM). This post hoc a...
journal_title:British journal of haematology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1111/bjh.14549
更新日期:2017-05-01 00:00:00
abstract::The Dutch beta zero-thalassaemia has few clinical symptoms in homozygotes, elevated fetal haemoglobin (4-11%) in heterozygotes, and has a DNA deletion previously estimated as 10 kb which removes the beta-globin gene (Gilman et al, 1984). A DNA fragment containing the breakpoints of the Dutch beta zero-thalassaemia del...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1987.tb02360.x
更新日期:1987-11-01 00:00:00
abstract::The regulatory human immunodeficiency virus-1 (HIV-1) Tat protein shows pleiotropic effects on the survival and growth of both HIV-1-infected and uninfected CD4+ T lymphocytes. In this study, we have demonstrated that low concentrations (10 ng/ml) of extracellular Tat protein induce the expression of both c-fos mRNA a...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2001.02576.x
更新日期:2001-03-01 00:00:00
abstract::Erythropoietin (EPO) and stem cell factor (SCF) are two important factors in human erythropoiesis. We have recently demonstrated that SCF and EPO synergistically activate mitogen-activated protein (MAP) kinase, thereby promoting growth of human erythroid colony-forming cells (ECFCs). In the present study, we have exam...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2000.02145.x
更新日期:2000-07-01 00:00:00
abstract::Interferon(rIFN)-alpha, a successful therapeutic agent in the control of thrombocytosis, has been shown to suppress human megakaryopoiesis. We investigated bone marrow biopsies from 12 patients with thrombocytosis due to chronic myeloproliferative disorders. Prior to treatment as well as during rIFN-alpha-2c therapy, ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1990.tb02531.x
更新日期:1990-01-01 00:00:00
abstract::Myeloablative conditioning prior to allogeneic stem cell transplantation causes a rapid increase in transferrin saturation and potentially toxic non-transferrin-bound iron (NTBI) in plasma. We have studied the ability of repeatedly administered apotransferrin to maintain this iron in a transferrin-bound form. Twenty a...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章
doi:10.1111/j.1365-2141.2006.06273.x
更新日期:2006-10-01 00:00:00
abstract::Significant increases in prolyl hydroxylase activity, a key enzyme in the collagen biosynthetic pathway, were noted in the hepatic homogenates of iron-loaded animals as compared to controls. The increase in prolyl hydroxylase activity was seen without any light microscopic histologic evidence of cell necrosis or accum...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1985.tb02997.x
更新日期:1985-02-01 00:00:00
abstract::The combined incidence of classical Philadelphia-negative myeloproliferative neoplasm (MPN) is 6-9/100 000 with a peak frequency between 50 and 70 years. MPN is less frequent in women of reproductive age. However, for essential thrombocythaemia (ET) in particular there is a second peak in women of reproductive age and...
journal_title:British journal of haematology
pub_type: 杂志文章,评审
doi:10.1111/bjh.16453
更新日期:2020-05-01 00:00:00
abstract::We have investigated the potency of the C677T mutation in the methylene tetrahydrofolate reductase (MTHFR) gene as a genetic risk factor in women with a history of early (=12 weeks gestation) and/or late (>12 weeks gestation) recurrent miscarriage (three or more consecutive pregnancy losses). Fifty-seven of the tota...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:
更新日期:1999-04-01 00:00:00
abstract::The effect of parenteral administration of IL-11 on gastrointestinal iron absorption was evaluated. A significant increase in the absorption of 59Fe-tagged food iron fed to fasting rats was observed when two subcutaneous injections of IL-11 were given 48 and 24 h prior to testing. Relatively similar increases of 25% w...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章
doi:10.1111/j.1365-2141.1995.tb05275.x
更新日期:1995-09-01 00:00:00
abstract::Double-negative (DN) regulatory T cells (Tregs) are specialized T lymphocytes involved in the down-modulation of immune responses, resulting in allotolerance after allogeneic haematopoietic stem cell transplantation (HSCT). Most of the properties of DN Tregs were identified in murine models, including the unique abili...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2008.07021.x
更新日期:2008-04-01 00:00:00
abstract::A number of disorders cause iron overload: some are of genetic origin, such as hereditary haemochromatosis, while others are acquired, for instance due to repeated transfusions. This article reviews the treatment options for hereditary haemochromatosis, with special attention to the use of erythrocytapheresis. In gene...
journal_title:British journal of haematology
pub_type: 杂志文章,评审
doi:10.1111/bjh.14376
更新日期:2016-12-01 00:00:00