Abstract:
:Platelet antibodies either bound to the surface of platelets or free in the serum were sought in patients who had low platelet counts for a variety of reasons. They were detected by finding excess IgG on the surface of washed platelets either directly or after incubation of the serum with normal platelets. The technique used was a modification of that described recently (Dixon et al, 1975) in which the greater the amount of anti-IgG consumed by the reaction with platelets the less the subsequent lysis of sheep red cells coated with IgG. This test could be calibrated by adding known quantities of IgG to the antisera and thus the amount of bound IgG could be measured. Platelets from normal donors and those with thrombocytopenia due to non-immunological causes such as aplastic anaemia or acute leukaemia were found to have 15-70 ng IgG/10(7) platelets (mean 53 ng). 37 out of 38 thrombocytopenic patients in whom immune destruction of platelets was suspected were found to have excess IgG on their platelets ranging from 70 to 720 ng/10(7) (mean 297 ng, P less than 0.001) and there was a significant inverse correlation between this amount and the platelet count (r = 0.85, P less than 0.001). Antibody in the serum was found in 14 of 22 patients with 'idiopathic' thrombocytopenic purpura (ITP), three of four patients with underlying lymphoma and in all five cases of systemic lupus erythematosus (SLE). Four non-thrombocytopenic patients with autoimmune haemolytic anaemia (AIHA) due to IgG on the red cells were also studied and were shown to have no increase in platelet-bound IgG. Our results confirm the work of Dixon et al (1975) that platelet antibody as excess IgG can be readily detected on the surface of platelets in patients with immune thrombocytopenia. The clinical implications of these findings are discussed.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Hegde UM,Gordon-Smith EC,Worlledge Sdoi
10.1111/j.1365-2141.1977.tb00567.xsubject
Has Abstractpub_date
1977-01-01 00:00:00pages
113-22issue
1eissn
0007-1048issn
1365-2141journal_volume
35pub_type
杂志文章abstract::Sixty patients with haematological malignancies received a myeloablative regimen of total body irradiation, cyclophosphamide and fludarabine followed by a T-cell-depleted peripheral blood stem cell transplant from a human leucocyte antigen identical sibling. To improve donor immune function, 1 x 10(7) CD3+ cells/kg we...
journal_title:British journal of haematology
pub_type: 杂志文章
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abstract::The EPB3 gene encodes band 3 (anion exchanger 1) of the red cell membrane. A subset of hereditary spherocytosis (HS) is associated with EPB3 gene mutations and band 3 deficiency. We report a large Italian family in which 10 of the 27 members investigated displayed an autosomal dominant HS. SDS-PAGE revealed a reductio...
journal_title:British journal of haematology
pub_type: 杂志文章
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abstract::During treatment of human red cells with phospholipase A2 from bee venom, a linear increase of the MCV and of the osmotic fragility occurs in parallel with the cleavage of the accessible phospholipids. However, even after maximal hydrolysis, i.e. degradation of up to 65% of the phosphatidylcholines and up to 6% of the...
journal_title:British journal of haematology
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abstract::Continuation chemotherapy is a key component of the treatment of childhood acute lymphoblastic leukaemia. During this treatment phase, weekly dose adjustments are carried out based on current and historical full blood counts (FBCs). The dose decision pathway is complex and suboptimal therapy may result if information ...
journal_title:British journal of haematology
pub_type: 杂志文章
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abstract::Twenty adult patients with high-risk leukaemia underwent allogeneic haemopoietic stem cell transplantation after melphalan, busulphan and total body irradiation followed by short-term methotrexate and low-dose cyclosporine or tacrolimus. Three patients developed veno-occlusive disease and no patient developed renal dy...
journal_title:British journal of haematology
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abstract::The main objective of the present study was to determine the role of CD34+ cell subsets in the haemopoietic recovery of children undergoing peripheral blood stem cell transplantation. For this purpose, 38 leukaphereses from 33 children with malignancies mobilized with G-CSF were analysed. Using dual-colour flow cytome...
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
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:British journal of haematology
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journal_title:British journal of haematology
pub_type: 临床试验,杂志文章
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更新日期:2010-09-01 00:00:00
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更新日期:2005-02-01 00:00:00
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pub_type: 杂志文章,评审
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journal_title:British journal of haematology
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journal_title:British journal of haematology
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更新日期:2015-05-01 00:00:00
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journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1977.tb01030.x
更新日期:1977-12-01 00:00:00
abstract::Bone involvement is the commonest clinical manifestation of sickle cell disease both in the acute setting such as painful vaso-occlusive crises, and as a source of chronic, progressive disability such as avascular necrosis. Management of these problems is often difficult because of the diagnostic imprecision of most l...
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