The behaviour of different factor VIII concentrates in a chromogenic factor X-activating system.

Abstract:

:A chromogenic factor Xa generation method has been developed for comparing the co-factor activity of factor VIII concentrates at physiological factor VIII concentrations (1 iu/ml). In the presence of thrombin all concentrates gave similar rapid rates of factor Xa generation, but in the absence of thrombin there were major differences between the rates of Xa generation between different products. High purity products, particularly those prepared by monoclonal antibody purification from plasma and recombinant sources, gave more rapid Xa generation than most intermediate-purity products. There was a very strong correlation between the rate of Xa generation and the difference in factor VIII potency by one-stage and two-stage assays. These results suggest the possible presence of small amounts of activated factor VIII in some concentrates, but differences in von Willebrand factor content could also contribute towards the different rates of factor Xa generation observed.

journal_name

Br J Haematol

authors

Kemball-Cook G,Tubbs JE,Dawson NJ,Barrowcliffe TW

doi

10.1111/j.1365-2141.1993.tb03064.x

subject

Has Abstract

pub_date

1993-06-01 00:00:00

pages

273-8

issue

2

eissn

0007-1048

issn

1365-2141

journal_volume

84

pub_type

杂志文章
  • Epigenetic inactivation of suppressors of cytokine signalling in Philadelphia-negative chronic myeloproliferative disorders.

    abstract::Ph-negative chronic myeloproliferative disorders (CMPD) are characterized by constitutive Janus kinase-signal transducer and activator of transcription (JAK-STAT) activation. SOCS3, SOCS1 and PTPN6 (SHP1) are negative regulators of the JAK-STAT pathway. We investigated epigenetic and genetic inactivation of SOCS3, SOC...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1111/j.1365-2141.2008.07072.x

    authors: Capello D,Deambrogi C,Rossi D,Lischetti T,Piranda D,Cerri M,Spina V,Rasi S,Gaidano G,Lunghi M

    更新日期:2008-05-01 00:00:00

  • Prophylactically equivalent doses of Enoxaparin and unfractionated heparin inhibit in vivo coagulation to the same extent.

    abstract::This study compared how Enoxaparin and unfractionated (UF) heparin influenced in vivo coagulation in patients randomized to receive, by twice daily subcutaneous injections, either 30 mg of Enoxaparin or 7500 I.U. of UF heparin after elective hip surgery. These two regimens were equally effective in reducing the incide...

    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.1365-2141.1992.tb06436.x

    authors: Ofosu FA,Levine M,Craven S,Dewar L,Shafai S,Blajchman MA

    更新日期:1992-10-01 00:00:00

  • Impact of genetic variants on haematopoiesis in patients with thrombocytopenia absent radii (TAR) syndrome.

    abstract::Thrombocytopenia absent radii (TAR) syndrome is clearly defined by the combination of radial aplasia and reduced platelet counts. The genetics of TAR syndrome has recently been resolved and comprises a microdeletion on Chromosome 1 including the RBM8A gene and a single nucleotide polymorphism (SNP) either at the 5' un...

    journal_title:British journal of haematology

    pub_type: 杂志文章,多中心研究

    doi:10.1111/bjh.14913

    authors: Manukjan G,Bösing H,Schmugge M,Strauß G,Schulze H

    更新日期:2017-11-01 00:00:00

  • Activity of the ligand for c-mpl, thrombopoietin, in early haemopoiesis.

    abstract::We examined the role of the ligand for c-mpl. thrombopoietin (TPO). in murine early haemopoiesis. using a serum-free culture system. TPO in combination with the ligand for c-kit (SF) or interleukin-3 (IL-3) supported colony formation by marrow cells of 5-fluorouracil (5-FU)-treated mice whereas TPO alone yielded no co...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1046/j.1365-2141.1996.d01-1814.x

    authors: Itoh R,Katayama N,Kato T,Mahmud N,Masuya M,Ohishi K,Minami N,Miyazaki H,Shiku H

    更新日期:1996-08-01 00:00:00

  • pH is a potent modulator of erythroid differentiation.

    abstract::Physiological parameters such as pH and oxygen tension probably play significant roles in the regulation of haemopoiesis in the bone marrow microenvironment, but these roles have yet to be characterized in detail. We have found that changes in culture pH (0.2 units) can cause significant changes in the culture composi...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1046/j.1365-2141.1998.00975.x

    authors: McAdams TA,Miller WM,Papoutsakis ET

    更新日期:1998-11-01 00:00:00

  • REVEAL-1, a phase 2 dose regimen optimization study of vosaroxin in older poor-risk patients with previously untreated acute myeloid leukaemia.

    abstract::This phase 2 study (N = 116) evaluated single-agent vosaroxin, a first-in-class anticancer quinolone derivative, in patients ≥60 years of age with previously untreated unfavourable prognosis acute myeloid leukaemia. Dose regimen optimization was explored in sequential cohorts (A: 72 mg/m(2)  d 1, 8, 15; B: 72 mg/m(2) ...

    journal_title:British journal of haematology

    pub_type: 杂志文章,多中心研究

    doi:10.1111/bjh.13214

    authors: Stuart RK,Cripe LD,Maris MB,Cooper MA,Stone RM,Dakhil SR,Turturro F,Stock W,Mason J,Shami PJ,Strickland SA,Costa LJ,Borthakur G,Michelson GC,Fox JA,Leavitt RD,Ravandi F

    更新日期:2015-03-01 00:00:00

  • Drug monitoring of low-dose PEG-asparaginase (Oncaspar) in children with relapsed acute lymphoblastic leukaemia.

    abstract::Use of asparaginase (ASNase) in the treatment of relapsed childhood acute lymphoblastic leukaemia (ALL) is associated with a high rate of hypersensitive reactions. 'Silent' inactivation may additionally reduce treatment intensity. Therefore, PEG-ASNase (Oncaspar), a polyethylene glycol conjugate of the native Escheric...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1046/j.1365-2141.2001.02680.x

    authors: Vieira Pinheiro JP,Müller HJ,Schwabe D,Gunkel M,Casimiro da Palma J,Henze G,von Schütz V,Winkelhorst M,Würthwein G,Boos J

    更新日期:2001-04-01 00:00:00

  • Overexpression of SOCS3 is associated with decreased survival in a cohort of patients with de novo follicular lymphoma.

    abstract::The prognostic significance of SOCS3 protein expression was determined in de novo follicular lymphomas (FL) with t(14;18) and bcl-2 overexpression. Presentation lymph nodes from 82 FL patients for whom clinical information was available were immunohistochemically segregated into SOCS3-positive (n = 42) or -negative (n...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1111/j.1365-2141.2006.06248.x

    authors: Krishnadasan R,Bifulco C,Kim J,Rodov S,Zieske AW,Vanasse GJ

    更新日期:2006-10-01 00:00:00

  • Unexpected high incidence of intracranial subdural haematoma during intensive chemotherapy for acute myeloid leukaemia with a monoblastic component.

    abstract::We report a high incidence of subacute, chronic and sometimes occult intracranial subdural haematoma (SDH) occurring during intensive chemotherapy for acute myeloid leukaemia (AML) with a monoblastic component. Between March 1990 and January 1993, 86 AML patients from our institution were randomized in the multicentri...

    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.1365-2141.1995.tb08358.x

    authors: Jourdan E,Dombret H,Glaisner S,Micléa JM,Castaigne S,Degos L

    更新日期:1995-03-01 00:00:00

  • Genome-wide DNA profiling better defines the prognosis of chronic lymphocytic leukaemia.

    abstract::The integration of molecular and clinical information to tailor treatments remains an important research challenge in chronic lymphocytic leukaemia (CLL). This study aimed to identify genomic lesions associated with a poor outcome and a higher risk of histological transformation. A mono-institutional cohort of 147 cas...

    journal_title:British journal of haematology

    pub_type: 杂志文章,多中心研究

    doi:10.1111/j.1365-2141.2011.08789.x

    authors: Rinaldi A,Mian M,Kwee I,Rossi D,Deambrogi C,Mensah AA,Forconi F,Spina V,Cencini E,Drandi D,Ladetto M,Santachiara R,Marasca R,Gattei V,Cavalli F,Zucca E,Gaidano G,Bertoni F

    更新日期:2011-09-01 00:00:00

  • The regulation of neutrophil phospholipase A2 by granulocyte-macrophage colony-stimulating factor and its role in priming superoxide production.

    abstract::Experiments were performed to investigate the relative role of phospholipase A2 (PLA2) in the activation and cytokine-mediated priming of neutrophil superoxide production. PLA2 activity was measured with a radiometric assay which discriminates between PLA2 and the downstream enzyme, 5-lipoxygenase. In cells that had n...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1046/j.1365-2141.1996.432970.x

    authors: Roberts PJ,Williams SL,Linch DC

    更新日期:1996-03-01 00:00:00

  • The iron chelator deferasirox affects redox signalling in haematopoietic stem/progenitor cells.

    abstract::The iron chelator deferasirox (DFX) prevents complications related to transfusional iron overload in several haematological disorders characterized by marrow failure. It is also able to induce haematological responses in a percentage of treated patients, particularly in those affected by myelodysplastic syndromes. The...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1111/bjh.13381

    authors: Tataranni T,Agriesti F,Mazzoccoli C,Ruggieri V,Scrima R,Laurenzana I,D'Auria F,Falzetti F,Di Ianni M,Musto P,Capitanio N,Piccoli C

    更新日期:2015-07-01 00:00:00

  • The stromal cell-derived factor-1alpha dependent migration of human cord blood CD34 haematopoietic stem and progenitor cells switches from protein kinase C (PKC)-alpha dependence to PKC-alpha independence upon prolonged culture in the presence of Flt3-lig

    abstract::Addition of the inflammatory cytokine interleukin (IL)-6 to the culture medium of human cord blood haematopoietic stem and progenitor cells (HSPCs) has been shown to lead to an altered stromal cell-derived factor-1alpha-dependent migratory phenotype. This study investigated whether this effect was attributed to a diff...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1111/j.1365-2141.2008.07256.x

    authors: Kasenda B,Kassmer SH,Niggemann B,Schiermeier S,Hatzmann W,Zänker KS,Dittmar T

    更新日期:2008-09-01 00:00:00

  • Recent advances in the pathogenesis and treatment of juvenile myelomonocytic leukaemia.

    abstract::Myeloid neoplasms derive from the pathological clonal expansion of an abnormal stem cell and span a diverse spectrum of phenotypes including acute myeloid leukaemia (AML), myeloproliferative neoplasms (MPN) and myelodysplastic syndromes (MDS). Expansion of myeloid blasts with suppression of normal haematopoiesis is th...

    journal_title:British journal of haematology

    pub_type: 杂志文章,评审

    doi:10.1111/j.1365-2141.2010.08525.x

    authors: Loh ML

    更新日期:2011-03-01 00:00:00

  • Increased leucocyte apoptosis in transfused β-thalassaemia patients.

    abstract::This exploratory study assessed apoptosis in peripheral blood leucocytes (PBL) from β-thalassaemia patients receiving chronic transfusions and chelation therapy (deferasirox or deferoxamine) at baseline, 1, 6, and 12 months. At baseline, thalassaemic PBLs presented 50% greater levels of Bax (BAX), 75% higher caspase-3...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1111/bjh.12076

    authors: Walter PB,Porter J,Evans P,Kwiatkowski JL,Neufeld EJ,Coates T,Giardina PJ,Grady RW,Vichinsky E,Olivieri N,Trachtenberg F,Alberti D,Fung E,Ames B,Higa A,Harmatz P,Thalassemia Clinical Research Network.

    更新日期:2013-02-01 00:00:00

  • Immunoglobulin light chains in common acute lymphoblastic leukaemia.

    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

    authors: Markey GM,Alexander HD,Nolan RL,Morris TC,Robertson JH

    更新日期:1989-01-01 00:00:00

  • Safety profile of the oral iron chelator deferiprone: a multicentre study.

    abstract::In previous trials, the orally active iron chelator deferiprone (L1) has been associated with sporadic agranulocytosis, milder forms of neutropenia and other side-effects. To determine the incidence of these events, we performed a multicentre prospective study of the chelator. Blood counts were performed weekly, and c...

    journal_title:British journal of haematology

    pub_type: 杂志文章,多中心研究

    doi:10.1046/j.1365-2141.2000.01866.x

    authors: Cohen AR,Galanello R,Piga A,Dipalma A,Vullo C,Tricta F

    更新日期:2000-02-01 00:00:00

  • Refractory anaemia with excess of blasts (RAEB): analysis of reclassification according to the WHO proposals.

    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

    authors: Germing U,Strupp C,Kuendgen A,Aivado M,Giagounidis A,Hildebrandt B,Aul C,Haas R,Gattermann N

    更新日期:2006-01-01 00:00:00

  • Thrombomodulin with the Asp468Tyr mutation is expressed on the cell surface with normal cofactor activity for protein C activation.

    abstract::Thrombomodulin (TM) is an endothelial cell glycoprotein that acts as an anticoagulant. Mutation in the TM gene is a potential risk factor for thrombosis. The first TM mutation identified was a heterozygous substitution of T for G at nucleotide position 1456, which predicted Asp468 with Tyr in a Ser/Thr-rich domain. To...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1046/j.1365-2141.1999.01567.x

    authors: Nakazawa F,Koyama T,Saito T,Shibakura M,Yoshinaga H,Chung DH,Kamiyama R,Hirosawa S

    更新日期:1999-08-01 00:00:00

  • Low expression of p27 and low proliferation index do not correlate in hairy cell leukaemia.

    abstract::The molecular basis accounting for the peculiar clinical and biological features of hairy cell leukaemia (HCL) is currently unknown. Deregulation of cell cycle genes plays a significant role in oncogenesis and there is considerable evidence suggesting that Cdk inhibitors (Ckis) function as tumour suppressors. We and o...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1046/j.1365-2141.2000.02210.x

    authors: Chilosi M,Chiarle R,Lestani M,Menestrina F,Montagna L,Ambrosetti A,Prolla G,Pizzolo G,Doglioni C,Piva R,Pagano M,Inghirami G

    更新日期:2000-10-01 00:00:00

  • Autografting for patients with CML in chronic phase: an update. Hammersmith BMT Team LRF Centre for Adult Leukaemia.

    abstract::Between 1984 and 1992, 21 patients with chronic myeloid leukaemia (CML) in chronic phase (CP) were treated with high-dose chemotherapy (or chemoradiotherapy) followed by autografting with unmanipulated peripheral blood stem cells (PBSC). 12 of these patients survive at a median of 82 months from the time of autografti...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1111/j.1365-2141.1994.tb03255.x

    authors: Hoyle C,Gray R,Goldman J

    更新日期:1994-01-01 00:00:00

  • Carrier mediated iron transport through erythroid cell membrane.

    abstract::The transport of iron through erythroid cell membrane was studied in a model system, measuring ferrous iron uptake by reticulocytes. It was found that these cells were able to take up ferrous iron and to incorporate it into haem at a rate similar to that observed when diferric transferrin was the iron donor. No compar...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1111/j.1365-2141.1988.tb04241.x

    authors: Egyed A

    更新日期:1988-04-01 00:00:00

  • High levels of lung resistance related protein mRNA in leukaemic cells from patients with acute myelogenous leukaemia are associated with inferior response to chemotherapy and prior treatment with mitoxantrone.

    abstract::Expression of the mdr1 (multidrug resistance), mrp (multidrug resistance associated protein), and lrp (lung resistance related protein) genes is associated with transport related MDR (multidrug resistance). We quantified mRNA levels of these genes using competitive reverse transcription polymerase chain reaction (RT-P...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1046/j.1365-2141.1999.01611.x

    authors: Xu D,Areström I,Virtala R,Pisa P,Peterson C,Gruber A

    更新日期:1999-09-01 00:00:00

  • Interleukin-2 treatment-associated eosinophilia is mediated by interleukin-5 production.

    abstract::During a trial using recombinant human interleukin-2 (rhIL-2) immunotherapy for acute myeloblastic leukaemia (AML) in remission, eosinophilia was observed in all patients. We used in-vitro clonogenic assays to investigate the mechanism of the eosinophilia in five patients. The mean eosinophil count increased from 0.05...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1111/j.1365-2141.1990.tb07867.x

    authors: Macdonald D,Gordon AA,Kajitani H,Enokihara H,Barrett AJ

    更新日期:1990-10-01 00:00:00

  • Protein kinase C-zeta overexpression induces erythroid phenotype in the monocytic leukaemia cell line U937.

    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

    authors: Mansat-De Mas V,de Thonel A,Gaulin V,Demur C,Laurent G,Quillet-Mary A

    更新日期:2002-08-01 00:00:00

  • Fusion of NUP98 and the SET binding protein 1 (SETBP1) gene in a paediatric acute T cell lymphoblastic leukaemia with t(11;18)(p15;q12).

    abstract::Three NUP98 chimaeras have previously been reported in T cell acute lymphoblastic leukaemia (T-ALL): NUP98/ADD3, NUP98/CCDC28A, and NUP98/RAP1GDS1. We report a T-ALL with t(11;18)(p15;q12) resulting in a novel NUP98 fusion. Fluorescent in situ hybridisation showed NUP98 and SET binding protein 1(SETBP1) fusion signals...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1111/j.1365-2141.2006.06410.x

    authors: Panagopoulos I,Kerndrup G,Carlsen N,Strömbeck B,Isaksson M,Johansson B

    更新日期:2007-01-01 00:00:00

  • Risk factors for red blood cell alloimmunization in the Recipient Epidemiology and Donor Evaluation Study (REDS-III) database.

    abstract::Despite the significance of red blood cell (RBC) alloimmunization, the lack of standardized registries in the US has prevented the completion of large studies. Data from 3·5 years of the Recipient Epidemiology and Donor Evaluation Study-III (REDS-III) recipient database, containing information from 12 hospitals, were ...

    journal_title:British journal of haematology

    pub_type: 杂志文章,多中心研究

    doi:10.1111/bjh.15182

    authors: Karafin MS,Westlake M,Hauser RG,Tormey CA,Norris PJ,Roubinian NH,Wu Y,Triulzi DJ,Kleinman S,Hendrickson JE,NHLBI Recipient Epidemiology and Donor Evaluation Study-III (REDS-III).

    更新日期:2018-06-01 00:00:00

  • Advances in understanding of pathogenesis of aHUS and HELLP.

    abstract::Both atypical haemolytic uraemic syndrome (aHUS) and the HELLP syndrome (haemolytic anaemia, elevated liver enzymes, and low platelets) are thrombotic microangiopathies characterized by microvascular endothelial activation, cell injury and thrombosis. aHUS is a disease of complement dysregulation, specifically a gain ...

    journal_title:British journal of haematology

    pub_type: 杂志文章,评审

    doi:10.1111/j.1365-2141.2008.07324.x

    authors: Fang CJ,Richards A,Liszewski MK,Kavanagh D,Atkinson JP

    更新日期:2008-11-01 00:00:00

  • Impact of glucose-6-phosphate dehydrogenase deficiency on sickle cell anaemia expression in infancy and early childhood: a prospective study.

    abstract::In patients with sickle cell anaemia (SCA), concomitant glucose-6-phosphate dehydrogenase (G6PD) deficiency is usually described as having no effect and only occasionally as increasing severity. We analysed sequential clinical and biological data for the first 42 months of life in SCA patients diagnosed by neonatal sc...

    journal_title:British journal of haematology

    pub_type: 杂志文章

    doi:10.1111/bjh.12590

    authors: Benkerrou M,Alberti C,Couque N,Haouari Z,Ba A,Missud F,Boizeau P,Holvoet L,Ithier G,Elion J,Baruchel A,Ducrocq R

    更新日期:2013-12-01 00:00:00

  • Serum chemokine levels in Hodgkin lymphoma patients: highly increased levels of CCL17 and CCL22.

    abstract::Hodgkin lymphoma (HL) is characterized by a minority of neoplastic Hodgkin-Reed Sternberg (HRS) cells surrounded by a non-neoplastic reactive infiltrate. As immunological mechanisms appear to be crucial in classical HL pathogenesis, altered serum chemokine levels might be related to disease activity. Serum levels of n...

    journal_title:British journal of haematology

    pub_type: 杂志文章,多中心研究

    doi:10.1111/j.1365-2141.2007.06964.x

    authors: Niens M,Visser L,Nolte IM,van der Steege G,Diepstra A,Cordano P,Jarrett RF,Te Meerman GJ,Poppema S,van den Berg A

    更新日期:2008-03-01 00:00:00