Abstract:
:Laboratory screening for lupus anticoagulant (LA) has been shown to be suboptimal in several studies. Guidelines have recently been published by an expert group for the British Committee for Standards in Haematology, in an attempt to standardize and improve screening procedures. The value of using screening tests conforming with these guidelines was investigated in a United Kingdom National External Quality Assessment Scheme (UK NEQAS) proficiency testing exercise. The correct diagnosis was achieved by 97% of laboratories for a LA-negative sample. However, 18.3% of centres reported a false-negative result for a sample from a LA-positive subject. A significantly higher proportion of centres that used methods conforming with the published guidelines achieved the correct diagnosis for this sample (P < 0.002, chi-square test). A wide variety of screening tests were used by laboratories in this study. Within-method agreement could be improved by the use of a common normal pooled plasma to determine ratios. However, between-method agreement was not improved by this procedure. We conclude that adoption of methods compliant with national guidelines may improve the diagnosis of LA. There is a need, however, for reference and standardization materials to ensure further improvement in the accuracy of LA methods.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Jennings I,Greaves M,Mackie IJ,Kitchen S,Woods TA,Preston FE,UK National External Quality Assessment Scheme for Blood Coagulation.doi
10.1046/j.1365-2141.2002.03821.xsubject
Has Abstractpub_date
2002-11-01 00:00:00pages
364-9issue
2eissn
0007-1048issn
1365-2141pii
3821journal_volume
119pub_type
杂志文章abstract::Two hundred and twenty-six patients were diagnosed with myelodysplastic syndrome (MDS), according to the French-American-British (FAB) criteria, over a 13-year period, and studied retrospectively in a single institution in order to study indicators which were prognostically significant. Analysis of clinical and labora...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1995.tb05590.x
更新日期:1995-07-01 00:00:00
abstract::Marizomib (MRZ) is an irreversible, pan-subunit proteasome inhibitor (PI) in clinical development for relapsed/refractory multiple myeloma (RRMM) and glioma. This study analysed MRZ, pomalidomide (POM) and low-dose dexamethasone (Lo-DEX) [PMD] in RRMM to evaluate safety and determine the maximum tolerated dose (MTD) a...
journal_title:British journal of haematology
pub_type: 杂志文章,多中心研究
doi:10.1111/bjh.14987
更新日期:2018-01-01 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::Thirty-four patients with refractory multiple myeloma were treated with 4-d continuous infusions of vincristine and adriamycin in combination with 4-d pulsed high-dose dexamethasone (VAD). Of 31 evaluable patients, 16 entered a complete remission (50%) and three a partial remission (10%). No difference in response rat...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1989.tb06269.x
更新日期:1989-01-01 00:00:00
abstract::Highly efficient systems remove toxic and pro-inflammatory haemoglobin (Hb) from the circulation and local sites of tissue damage. Macrophages are major Hb-clearing cells; CD163 was recently recognized as the specific haemoglobin-haptoglobin scavenger receptor (HSR). We show that dexamethasone strongly induced the spe...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2002.03790.x
更新日期:2002-10-01 00:00:00
abstract::Treatment with intravenous recombinant human interleukin-2 (rh IL-2) is frequently accompanied by the capillary leak syndrome and disturbances of the coagulation system. Although the exact mechanisms are still not fully understood, the involvement of the endothelium is proven. This investigation aimed to elucidate mor...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1999.01453.x
更新日期:1999-06-01 00:00:00
abstract::Novel agents have provided a new foundation for multiple myeloma therapies. When combined with other anti-myeloma agents, these compounds significantly enhance clinical efficacy. High-dose steroids are frequently used in anti-myeloma combination regimens; however, the doses employed are often poorly tolerated, especia...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2011.08703.x
更新日期:2011-07-01 00:00:00
abstract::Platelet function was investigated in three patients with the Lesch-Nyhan syndrome. Platelet count, morphology and size distribution was normal in all patients. Platelet turnover was normal. Electron microscopy did not reveal any ultrastructural abnormality. Template bleeding times were normal and prolonged after aspi...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1975.tb00854.x
更新日期:1975-10-01 00:00:00
abstract::Salivary gland mucosa-associated lymphoid tissue (MALT) lymphomas (SGML) are rare, as are data concerning their behaviour. We analysed clinical features at presentation, particularly the association with Sjoegren syndrome (SS) and hepatitis C virus (HCV) infection, and outcome in 33 cases of SGML diagnosed between Mar...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2004.04993.x
更新日期:2004-07-01 00:00:00
abstract::Invasive procedures can be performed safely in children with haemophilia due to the availability of factor VIII/IX for patients without inhibitors. Most guidelines are based on the experiences in adults, but still there is no established consensus on the optimal factor levels or duration of replacement therapy for adu...
journal_title:British journal of haematology
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2141.2012.09089.x
更新日期:2012-06-01 00:00:00
abstract::In a phase II study, 12 patients with a myelodysplastic syndrome (MDS) and anaemia (nine transfusion-dependent) were treated with recombinant human erythropoietin (rHuEpo) to assess the therapeutic effect on erythropoiesis and on transfusion requirement. Patients with a low risk of developing acute leukaemia were incl...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1991.tb04477.x
更新日期:1991-08-01 00:00:00
abstract::Guidelines for the use of polymerase chain reaction (PCR)-based assays to aid the diagnosis of invasive aspergillosis (IA) in high-risk haematology patients have not been formulated. We prospectively evaluated a nested PCR assay to detect Aspergillus in blood during 95 febrile neutropenic episodes, in patients with ha...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2005.05887.x
更新日期:2006-02-01 00:00:00
abstract::This study investigated the response of acute lymphoblastic leukaemia (ALL) cells to Wnt proteins. Accumulation of beta-catenin was measured by Western blotting and immunofluorescence microscopy. Reverse transcription polymerase chain reaction (RT-PCR) analysis of B-cell progenitor acute lymphoblastic leukaemia (ALL) ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2007.06667.x
更新日期:2007-08-01 00:00:00
abstract::We investigated the effects of Il-12 on functional properties of CD3+ CD8+ granular lymphocytes (GL) of of patients with lymphoproliferative disease of granular lymphocytes (LDGL). To this aim, in 10 cases with clonal CD3+ GL proliferation (nine cases with an associated TCR alpha/beta receptor and one case with a TCR ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1996.d01-1495.x
更新日期:1996-02-01 00:00:00
abstract::Chronic ITP is due to antibody-induced destruction of platelets by the reticuloendothelial (RE) system. The role of complement in this process is unclear. We measured platelet-associated complement (PAC) components C3, C3bi, C4 and C9 in 16 patients with chronic ITP, in two of these patients prior to and after splenec...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1985.tb07477.x
更新日期:1985-08-01 00:00:00
abstract::Langerhans cell histiocytosis (LCH) is a rare disease, affecting subjects of any age, with extremely variable clinical manifestations. Although most patients with LCH have localized disease, requiring local or even no therapy, those patients with disseminated, 'multi-system' disease require specific therapy because th...
journal_title:British journal of haematology
pub_type: 杂志文章,评审
doi:10.1111/bjh.13955
更新日期:2016-06-01 00:00:00
abstract::Sickle cell anaemia (SS) and sickle cell-haemoglobin C disease (SC) patients exhibit severe red blood cell (RBC) rheological alterations involved in the development of several complications. The contribution of oxidative stress in these haemorheological abnormalities is still unknown. We compared RBC reactive oxygen s...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.12912
更新日期:2014-08-01 00:00:00
abstract::This study compared the diagnostic value of Whole-Body Ultra Low-Dose computed tomography (WBULDCT) with that of Spinal Magnetic Resonance Imaging (SMRI) in identification of spinal bone marrow involvement in patients with Multiple Myeloma (MM). Thirty-five patients with histologically proven MM underwent WBULDCT and ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.14545
更新日期:2017-05-01 00:00:00
abstract::Dendritic cell (DC) differentiation was investigated in samples from two acute promyelocytic leukaemia (APL) patients with classic translocation t(15;17)(q22;q21). After 18 d of culture in the presence of granulocyte-macrophage colony-stimulating factor, interleukin 4 and tumour necrosis factor alpha, 10-15% of pathol...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2001.03023.x
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abstract::To assess sources of variability in platelet function tests in normal subjects, 64 healthy young adults were tested on 2-6 occasions at 2 week intervals using four methods: platelet aggregation (AGG) in platelet-rich plasma (PRP) in the Bio/Data PAP-4 Aggregometer (BD) and Chrono-Log Lumi-Aggregometer (CL); and AGG in...
journal_title:British journal of haematology
pub_type: 杂志文章
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journal_title:British journal of haematology
pub_type: 杂志文章,评审
doi:10.1111/bjh.16898
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abstract::The BRAF V600E mutation has recently been described in all cases of hairy cell leukaemia (HCL). We have developed and validated a rapid and sensitive high-resolution melting analysis (HRMA) assay that detects BRAF exon 15 mutations when hairy cells are as low as 5-10% in a sample. All 48 HCL patients were positive for...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2011.08868.x
更新日期:2011-12-01 00:00:00
abstract::A novel human leukaemia cell line, designated TMD7, was established from blast cells of a patient with de novo acute myeloblastic leukaemia with trilineage myelodysplasia (AML/TLD). As seen in the original blast cells, TMD7 cells expressed CD7, CD13, CD33 and CD34 and showed an abnormal karyotype containing -5, -7, -8...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2002.03446.x
更新日期:2002-05-01 00:00:00
abstract::Allogeneic sibling bone marrow transplantation (BMT) is the recommended treatment for relapsed childhood acute lymphoblastic leukaemia (ALL), but appropriate donors are only available in 30% of cases. Unfortunately, BMT from unrelated donors (UD) has been associated with high rates of severe graft-versus-host disease ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1996.d01-1834.x
更新日期:1996-09-01 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::An elderly patient with no abnormal bleeding presented with prolongation of the activated partial thromboplastin time (aPTT). Preincubation of plasma with aPTT reagent caused shortening of the abnormal clotting time. Plasma prekallikrein (PK) activity and antigen were <5 u/dL. Molecular analysis showed a homozygous Ar...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2004.05180.x
更新日期:2004-10-01 00:00:00
abstract::The purpose of the present work were to identify the initial characteristics associated with long-term survival in chronic granulocytic leukaemia (CGL) and to analyse the accuracy of prognostic models in identifying long-term survivors. 813 Philadelphia (Ph) chromosome-positive, nonblastic CGL patients from six Americ...
journal_title:British journal of haematology
pub_type: 杂志文章,多中心研究
doi:10.1111/j.1365-2141.1994.tb04912.x
更新日期:1994-06-01 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::Patients belonging to four families with 'atypical elliptocytosis' have been investigated. Clinical, haematological, erythrokinetic and enzymatic characteristics as well as the effect of splenectomy are discussed. These studies appear to define the fundamental features of a particular disorder or a variety of heredita...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1979.tb03770.x
更新日期:1979-11-01 00:00:00
abstract::In order to standardize and assess the quality of immunophenotyping of leukaemias and lymphomas for diagnostic purposes, a cooperative study group in the Netherlands, SIHON, has formulated guidelines for the composition of antibody panels to be applied and guidelines for the interpretation of the marker analysis. To a...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1992.tb04558.x
更新日期:1992-04-01 00:00:00