Abstract:
:We report on quantitative analyses of C5b-9 binding to target red blood cells (RBC) lysed through the action of drug (nomifensine)-dependent antibodies (ddab) and anti-RBC antibodies (warm plus cold agglutinins). Immunoradiometric assays showed that, at any given degree of haemolysis, more C5b-9 was bound to cells sensitized with anti-RBC antibodies compared to cells lysed via ddab. Thus, C5b-9 complexes deposited through the action of ddab appeared to be haemolytically more 'efficient' than those deposited via anti-RBC antibodies. However, data obtained from flow-cytometric assays and immunoelectron microscopy demonstrated a major role for the distribution (total number) of C5b-9 lesions among the cells within a given cell population. Enhanced haemolysis with a given total amount of C5b-9 complexes appeared to be derived from a more even distribution of these complexes among the cells rather than from higher lytic efficiency of individual complexes. Since ddab bind with low affinity to cells, we suggest that these antibodies diffuse from cell to cell and cause extensive haemolysis through the deposition of relatively few C5b-9 complexes at each site. In contrast, high affinity antibodies remain largely bound to relatively restricted sites causing deposition of larger amounts of C5b-9 on, and hence lysis of, numerically fewer cells. With respect to the net intravascular haemolytic effect, our findings may explain why complement-activating antibodies of low affinity are often more detrimental than high affinity antibodies.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Salama A,Mueller-Eckhardt C,Boschek B,Bhakdi Sdoi
10.1111/j.1365-2141.1987.tb02268.xsubject
Has Abstractpub_date
1987-02-01 00:00:00pages
217-22issue
2eissn
0007-1048issn
1365-2141journal_volume
65pub_type
杂志文章abstract::We examined the effect of vitamin D receptor (VDR) polymorphisms at exon 2 (FokI) and intron 8 (BsmI) on the stature and bone mineral density at femoral neck (FBMD) and lumbar spine (LBMD) in 108 prepubertal and pubertal homozygous beta thalassaemic patients, regularly treated. We found significantly shorter stature a...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2002.03426.x
更新日期:2002-05-01 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::A t(5;12)(q33;p13) translocation has been detected in two patients with myeloid disorder and eosinophilia. Six other patients with haematological disease with eosinophilia with similar translocation have been published previously. The existence of a new entity, a myeloproliferative disorder with eosinophilia and t(5;1...
journal_title:British journal of haematology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2141.1994.tb05029.x
更新日期:1994-10-01 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
doi:10.1111/j.1365-2141.1994.tb04827.x
更新日期:1994-04-01 00:00:00
abstract::A patient presented with haemolytic anaemia and a negative direct antiglobulin test (DAT), and was found to have an IgG antibody with anti-Jka specificity in his serum. His red cells were typed as Jk(a-b+). Later he developed idiopathic thrombocytopenic purpura (ITP), and had a positive DAT due to anti-Jka bound to hi...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1988.tb02411.x
更新日期:1988-08-01 00:00:00
abstract::Coagulation factor concentrates are known to inhibit a variety of immune reactions when assessed in vitro. This study assessed the immunomodulatory activity of a wide range of coagulation factor concentrates by measuring their inhibition of PHA-stimulated lymphocyte proliferation and reduction in IL-2 secretion. The h...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1999.01638.x
更新日期:1999-09-01 00:00:00
abstract::Following bone marrow stem cell transplantation allo-responses against haemopoietic progenitor cells (HPC), causing graft rejection and graft-versus-leukaemia effects, can be induced by donor T cells recognizing peptides derived from polymorphic endogenous proteins present in HPC. Since CD33 and CD34 are both expresse...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1998.00906.x
更新日期:1998-09-01 00:00:00
abstract::There is evidence for increased factor VII turnover and the associated increased thrombin generation and fibrinolytic activities in sickle cell disease (SCD) that may affect in vivo platelet and endothelial cell reactivity. We studied the release of specific eicosanoids that are indicative of in vivo platelet activati...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1994.tb08316.x
更新日期:1994-07-01 00:00:00
abstract::A single immunoglobulin light chain lambda was identified in the blast cells of two out of 12 patients with common acute lymphoblastic leukaemia (C-ALL) using the alkaline phosphatase/anti-alkaline phosphatase (APAAP) technique. Inhibition at the cell surface proved that the reaction was a genuine anti-lambda reaction...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1989.tb06274.x
更新日期:1989-01-01 00:00:00
abstract::Mantle-cell lymphoma (MCL) is a B-cell tumour with a usually poor prognosis, characterized by the proliferation of small cleaved lymphocytes with a diffuse growth pattern. We report a polymerase chain reaction-based analysis of minimal residual disease in a patient who achieved complete remission after allogeneic bloo...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1996.d01-1816.x
更新日期:1996-08-01 00:00:00
abstract::This study looked for clonal diversity in patients with a myeloproliferative neoplasm associated with more than one acquired genetic lesion. A tyrosine kinase mutation and a cytogenetic lesion were present in the same clone in six of seven patients. By contrast, the genetic lesions were present in separate clones in a...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2008.07560.x
更新日期:2009-03-01 00:00:00
abstract::We report a patient with poor-prognosis myelodysplastic syndrome (MDS) after successful treatment of lymphoma, who was given an allogeneic BMT, engrafted and achieved complete remission, but later had a relapse of his MDS with complete disappearance of donor haemopoiesis. After two episodes of CMV pneumonia and contin...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1996.d01-1824.x
更新日期:1996-09-01 00:00:00
abstract::It has been proposed that iron accumulation may contribute to atherogenesis by increasing free radical formation and oxidative stress. Epidemiological studies in which the association of iron status with atherosclerosis was assessed raised conflicting results. To test whether genetic haemochromatosis is associated wit...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1998.00898.x
更新日期:1998-09-01 00:00:00
abstract::This study was designed to determine the incidence of relapse and factors predictive for relapse in 719 patients with severe aplastic anaemia (SAA) after immunosuppressive treatment (IS). Patients developing myelodysplasia or acute leukaemia after IS, and patients receiving a transplant, were excluded from this analys...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1993.tb03181.x
更新日期:1993-10-01 00:00:00
abstract::We report 14 normal peripheral blood stem cell (PBSC) donors > or = 60 years of age who had cytokine mobilization followed by PBSC apheresis for allogeneic transplantation. Mobilization was achieved with filgrastim (6 microg/kg twice daily). Their median age was 63.5 years (range 60-77), and 43% had a positive medical...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1997.302677.x
更新日期:1997-05-01 00:00:00
abstract::We examined major histocompatibility complex (MHC) class II expression in B cells, peripheral blood monocytes, activated T cells, epidermal Langerhans cells, monocyte-derived dendritic cells, dermal microvascular endothelial cells (DMEC) and fibroblasts of twin brothers with MHC class II deficiency. Although residual ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2001.03105.x
更新日期:2001-11-01 00:00:00
abstract::Four unrelated patients with a bleeding diathesis (bleeding time longer than 30 min), some spontaneous platelet aggregation, thrombocytopenia and large platelets, had decreased levels of factor VIII-von Willebrand factor (FVIII-VWF) related properties and impaired platelet adherence to human artery subendothelium. The...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1985.tb07333.x
更新日期:1985-03-01 00:00:00
abstract::Mucormycosis has emerged as an increasingly important cause of morbidity and mortality in immunocompromised patients, but contemporary data in children are lacking. We conducted a nationwide multicentre study to investigate the characteristics of mucormycosis in children with haematological malignancies. The cohort in...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.16329
更新日期:2020-04-01 00:00:00
abstract::The influence of erythrocyte shape changes on the sedimentation rate was studied in vitro and in vivo. In vitro the highest sedimentation rate was observed with a slight degree of stomatocytosis (morphological index-0.3; i.e. one red cell out of three being a stomatocyte I). With increasing degrees of stomatocytosis t...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1989.tb00296.x
更新日期:1989-12-01 00:00:00
abstract::To clarify the mechanisms underlying thrombocytosis secondary to infections, we longitudinally studied serum levels of thrombopoietin (TPO) and interleukin (IL)-6 in 15 infants and young children with prominent thrombocytosis (platelets >700 x 10(9)/l) following acute infections and 116 age-matched controls using an e...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.0007-1048.2001.03304.x
更新日期:2002-03-01 00:00:00
abstract::Eltrombopag is a thrombopoietin-receptor agonist that stimulates platelet production and increases platelet counts in patients with chronic immune thrombocytopenia (ITP). This open-label, single-arm study evaluated consistency of response and safety following repeated intermittent dosing of eltrombopag 50 mg daily ove...
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.12169
更新日期:2013-02-01 00:00:00
abstract::Genome-wide association studies (GWAS) have shown that the 8q24 region harbours multiple independent cancer susceptibility loci, even though it is devoid of genes. Given that no GWAS data are currently available for multiple myeloma (MM), we tested the hypothesis that genetic variants in this region could play a role ...
journal_title:British journal of haematology
pub_type: 杂志文章,meta分析
doi:10.1111/j.1365-2141.2012.09047.x
更新日期:2012-05-01 00:00:00
abstract::Haematological abnormalities frequently occur in patients infected by human immunodeficiency virus-type 1 (HIV-1). Increasing evidence indicates that bone marrow suppression (BM) results from viral infection of accessory cells, with impaired stromal function and alteration of haematopoietic growth factor network. We h...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2002.03680.x
更新日期:2002-09-01 00:00:00
abstract::Hydroxyurea (HU), an inhibitor of DNA synthesis, can also induce haemoglobinization in certain erythroid cell lines. In this study, we report that intracellular peroxides levels were increased in HU-treated murine erythroleukaemia (MEL) cells and that l-acetyl-N-cysteine (LNAC), a potent reducing reagent, had a signif...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2003.04309.x
更新日期:2003-05-01 00:00:00
abstract::The inv(8)(p11q13) chromosomal abnormality, described in acute myeloid leukaemias (AML), fuses the histone acetyl-transferase (HAT) MYST3 (MOZ) gene with another HAT gene, NCOA2 (TIF2). We generated a transgenic zebrafish in which the MYST3/NCOA2 fusion gene was expressed under control of the spi1 promoter. An AML dev...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2008.07362.x
更新日期:2008-11-01 00:00:00
abstract::In 1997, the Italian Ministry of Health created a special programme for the controlled distribution of deferiprone to collect data and to evaluate its safety and effectiveness in long-term use. Five hundred and thirty-two thalassaemia patients from 86 treatment centres were enrolled in this programme. One hundred and ...
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:2002-07-01 00:00:00
abstract::Splanchnic vein thrombosis (SVT) is one of the most important complications of myeloproliferative neoplasms (MPN). Although MPN are common causes of SVT, the pathophysiological mechanisms underlying this predisposition, their epidemiology and natural history are not fully understood. Studies have concentrated on the g...
journal_title:British journal of haematology
pub_type: 杂志文章,评审
doi:10.1111/bjh.12461
更新日期:2013-09-01 00:00:00
abstract::In a patient with Philadelphia chromosome-positive acute lymphoblastic leukaemia (ALL), a novel variant of the chimaeric BCR-ABL mRNA transcript was detected by reverse transcription polymerase chain reaction (RT-PCR). Sequencing revealed the novel transcript to be a chimaeric mRNA produced by fusion of the BCR exon 1...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2000.02205.x
更新日期:2000-09-01 00:00:00
abstract::We have investigated the molecular basis of alpha thalassaemia in the so-called 'Cape Coloured' population of Cape Town. DNA from 17 cases was analysed by Southern blotting and hybridization with an alpha globin complementary DNA probe. Three types of alpha thalassaemia genetic determinants were detected: the 3.5 kb d...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1983.tb01228.x
更新日期:1983-09-01 00:00:00
abstract::Heparin binding on polymorphonuclear leucocytes (PMNL) was characterized. Heparin binding was specific, rapid, saturable and reversible. One single class of heparin binding sites was found with a dissociation constant of 1.22 mumol/l and 7.7 x 10(6) sites per PMNL. The binding was independent of the anticoagulant acti...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1992.tb08176.x
更新日期:1992-05-01 00:00:00