Abstract:
:Data on endogenous thrombopoietin (TPO) levels and their regulation in myelodysplastic syndromes (MDS) are sparse. We examined the plasma TPO level of 85 MDS patients by a sensitive enzyme immunoassay and the platelet expression of TPO receptor (TPO-R) protein, which metabolizes endogenous TPO, in 19 MDS patients with an equilibrium binding assay using 125I-TPO. The MDS patients had higher plasma TPO levels (7.0 +/- 9.3 fmol/ml) than 52 normal subjects (P < 0.0001). Refractory anaemia (RA) patients (n = 39) had higher plasma TPO levels than patients (n = 28) with RA with excess blasts (RAEB) or RAEB in transformation (RAEB-t) (P = 0.0002), irrespective of similar platelet counts in these groups. The plasma TPO level correlated inversely with the platelet count in RA patients (P = 0.0027) but not in RAEB and RAEB-t patients (P = 0.7865). These data suggest that the physiological pathway for TPO production and metabolism is conserved, at least partially, in RA, but deranged in RAEB/RAEB-t. The number of TPO-R per platelet was significantly smaller in 19 MDS patients (17.5 +/- 13.3) than in normals (P = 0.0014), but similar between RA patients and patients with RAEB and RAEB-t. Further, the bone marrow megakaryocyte count, determined in 31 MDS patients, was quite similar between RA patients and patients with RAEB or RAEB-t. Thus, in addition to thrombocytopenia, a reduced platelet TPO-R number may contribute to elevated plasma TPO levels in MDS, and a regulatory pathway for circulating TPO other than platelet TPO-R and marrow megakaryocytes, such as blasts expressing TPO-R, may operate in RAEB/RAEB-t.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Tamura H,Ogata K,Luo S,Nakamura K,Yokose N,Dan K,Tohyama K,Yoshida Y,Hamaguchi H,Sakamaki H,Kuwaki T,Tahara T,Kato T,Nomura Tdoi
10.1046/j.1365-2141.1998.01054.xsubject
Has Abstractpub_date
1998-12-01 00:00:00pages
778-84issue
3eissn
0007-1048issn
1365-2141journal_volume
103pub_type
杂志文章abstract::Primary long-term bone marrow cultures grown in 40 mM HEPES-buffered McCoy's 5A medium produced granulocyte-macrophage colony-forming units (CFU-GM) for a median of 9 weeks compared with 7 weeks with CO2/bicarbonate-buffered cultures. Reducing the medium glucose concentration (from 12.5 to 2.75 mM) extended the cultur...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2000.02002.x
更新日期:2000-06-01 00:00:00
abstract::Aplastic anaemia (AA) is considered as an immune-mediated bone marrow failure syndrome. The mechanism is involved with a variety of immune molecules including interferon-γ (IFN-γ), tumour necrosis factor-α (TNF-α) and interleukins (ILs). IL-27 is a novel member of the IL-12 family, which mediates T cell response and e...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2010.08431.x
更新日期:2011-06-01 00:00:00
abstract::Monoclonal B-cell populations have been detected in the peripheral blood of apparently healthy individuals by flow cytometry. In 2005, the term monoclonal B-cell lymphocytosis (MBL) was proposed to describe these findings. MBL may be immunophenotypically similar to chronic lymphocytic leukaemia (CLL) and, like CLL, th...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2007.06870.x
更新日期:2007-12-01 00:00:00
abstract::We explored the prognostic factors for children with very high-risk (VHR) Philadelphia chromosome (Ph) negative B-cell acute lymphoblastic leukaemia (B-ALL) and compared the therapeutic effects of intensive chemotherapy and unmanipulated haploidentical haematopoietic stem cell transplantation (haplo-HSCT) as post-remi...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章
doi:10.1111/bjh.16226
更新日期:2020-03-01 00:00:00
abstract::The molecular basis of the three major alleles (Fy(a)/Fy(b)/Fy) of the Duffy (FY) blood group system has recently been established but the Fy(x) phenotype associated with weak expression of the Fy(b) and other FY antigens is poorly understood. In the Fy(x) genes of five unrelated British and Swedish donors with the Fy...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1998.01083.x
更新日期:1998-12-01 00:00:00
abstract::Surgical interventions in patients suffering from haemophilia A require infusions of large doses of factor VIII (F VIII) concentrates. These are expensive and may pose a burden on the immune system, which is already compromised in many haemophiliacs. F VIII is usually given as bolus injections, although there are repo...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1992.tb06951.x
更新日期:1992-12-01 00:00:00
abstract::Iron is required for monocyte/macrophage differentiation of HL-60 leukaemia cells. Differentiation requires induction of the cyclin-dependent kinase inhibitor p21 (WAF1/CIP1), and cell cycle arrest at the G1/S checkpoint. With iron depletion, p21 induction and differentiation are blocked. To establish the roles of iro...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2002.03498.x
更新日期:2002-06-01 00:00:00
abstract::Diamond-Blackfan anaemia (DBA) is a rare bone marrow failure syndrome characterised by anaemia, congenital anomalies and cancer predisposition. Although infections are the second leading cause of mortality in non-transplanted patients, immune function is largely unexplored. We identified quantitative deficits in serum...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章
doi:10.1111/bjh.15915
更新日期:2019-07-01 00:00:00
abstract::Accurate clinical staging is crucial for adequate risk-adapted treatment in Hodgkin lymphoma (HL) to prevent patients from under- or over-treatment. Within the latest German Hodgkin Study Group trial generation, diagnostic findings such as histopathology, computerized tomography imaging and clinical risk factors were ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.13646
更新日期:2015-11-01 00:00:00
abstract::A novel principle is proposed for a differential separation of live cells (such as leucocytes) from a main flow. A microfluidic device with planar insulated electrodes as the side walls of the channel was manufactured and tested. An array of insulated vertical conductor wires was inserted along the axis of the channel...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2006.06456.x
更新日期:2007-02-01 00:00:00
abstract::The 32 kD lipid-raft-associated membrane protein 'stomatin' is deficient from the erythrocyte membrane in the Na+-K+ leaky haemolytic anaemia, overhydrated hereditary stomatocytosis (OHSt). To date, no mutation in the gene coding for this protein has so far been found in OHSt. In this study, we have analysed the distr...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2005.05742.x
更新日期:2005-10-01 00:00:00
abstract::Hepatocyte growth factor (HGF) has been known as a versatile functional molecule, and as being involved in the colony formation of haemopoietic progenitor cells. Clinically, an elevated HGF level in the blood has been associated with liver diseases such as fulminant hepatic failure and acute hepatitis. We have found a...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1994.tb08330.x
更新日期:1994-07-01 00:00:00
abstract::Peripheral blood progenitor cell (PBPC) mobilization was evaluated in 53 patients receiving the high-dose sequential (HDS) regimen: 27 had non-Hodgkin's lymphoma or Hodgkin's disease, primary refractory or at first relapse, 26 had non-Hodgkin's lymphoma at diagnosis. Mobilization was assessed following either 7 g/m2 c...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章
doi:10.1046/j.1365-2141.1997.3433157.x
更新日期:1997-10-01 00:00:00
abstract::The glycoprotein localization of the platelet-specific antigens Zwa, Zwb and Baka and their presence on tryptic fragments of glycoproteins was studied by immunoblotting. Human platelets were solubilized and pre-cleared from platelet-associated IgG. The glycoproteins were separated on SDS polyacrylamide gels, transferr...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1986.tb02233.x
更新日期:1986-12-01 00:00:00
abstract::Akt mediates growth and drug resistance in multiple myeloma (MM) cells in the bone marrow (BM) microenvironment. We have shown that a novel Akt inhibitor Perifosine induces significant cytotoxicity in MM cells in the BM milieu. This study further delineated molecular mechanisms whereby Perifosine triggered cytotoxicit...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2007.06714.x
更新日期:2007-09-01 00:00:00
abstract::Smouldering multiple myeloma (SMM) presents without MM defining symptoms. We aimed to identify patients with SMM with an 80% risk of progression within 2 years using only serum parameters. In total, 527 patients with SMM were included and divided into a training group (287 patients from the Czech Myeloma Group [CMG]) ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.16572
更新日期:2020-07-01 00:00:00
abstract::Glucose-6-phosphate dehydrogenase (G6PD) deficient individuals are at increased risk of developing haemolysis following treatment with various antimalarial drugs. Reliable field tests for G6PD deficiency are thus needed in chemotherapy studies and their validity has to be assessed. In two phase II clinical trials on m...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2005.05778.x
更新日期:2005-11-01 00:00:00
abstract::This communication reports a patient with concomitant expansions of CD4+ and CD8+ large granular lymphocytes. Immunological analyses revealed that the abnormally increased CD4+ LGL fraction was phenotypically similar to other reported persistent CD4+ LGL expansions, whereas the phenotypic profile for the CD8+ LGL comp...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1994.tb05087.x
更新日期:1994-11-01 00:00:00
abstract::Human bone marrow mesenchymal stem cells (MSC) generate, via a fibroblast colony-forming unit (CFU-F), osteo-chondroblastic cells as well as adipocytes and stromacytes. To date, these stem cells are isolated indirectly using a cell culture method and phenotyped as CD45 negative while the in vivo counterparts are undet...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2003.04469.x
更新日期:2003-08-01 00:00:00
abstract::This study was undertaken to evaluate the toxicity and pharmacokinetics of a dimethyl sulphoxide (DMSO)-based intravenous formulation of busulphan in the conditioning of 45 patients undergoing allogeneic or autologous stem cell transplantation (SCT). Busulphan was given as a single daily dose. In 15 patients a single ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2001.03044.x
更新日期:2001-09-01 00:00:00
abstract::A patient with Jo-1 antibody-associated polymyositis (Jo-1 PM) had a Karnofsky score of 40% and severe muscle, liver and lung damage that was refractory to standard therapy. The female patient received an autologous T-cell-depleted haematopoietic stem cell transplant (HSCT) after myeloablative conditioning. The transp...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2000.02191.x
更新日期:2000-08-01 00:00:00
abstract::Myelodysplastic syndrome (MDS) is a common neoplasm of haematopoietic pluripotent stem cells. Although one third of MDS patients evolve to acute myeloid leukaemia (AML), little is understood about the mechanisms responsible for this progression. We have previously detected the frequent loss of heterozygosity (LOH) on ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2003.04434.x
更新日期:2003-07-01 00:00:00
abstract::This study compared pulmonary function tests (PFTs) with cardiac, pancreatic and liver iron in 76 thalassemia major (TM) patients. Restrictive lung disease was observed in 16%, hyperinflation in 32% and abnormal diffusing capacity in 3%. While no patients met Global Initiative for Chronic Lung Disease criteria for air...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.2011.08808.x
更新日期:2011-10-01 00:00:00
abstract::The outcome of children with acute lymphoblastic leukaemia (ALL) and early relapse remains unsatisfactory. In January 1995, the AIEOP (Associazione Italiana di Oncologia ed Ematologia Pediatrica) group opened a trial for children with ALL in first isolated or combined bone marrow relapse defined at high risk according...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1046/j.1365-2141.2002.03706.x
更新日期:2002-09-01 00:00:00
abstract::Treatment with 75 microg/kg/d intravenous (i.v.) anti-D was compared with 50 microg/kg/d in a prospective randomized study of 27 RhD-positive, human immunodeficiency virus-negative, adult, acute, non-splenectomized patients with immune thrombocytopenic purpura (ITP) and platelet counts < or = 30 x 109/l. The higher do...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1365-2141.2001.02627.x
更新日期:2001-03-01 00:00:00
abstract::Expression of heat-shock proteins (hsp) was analysed in the leukaemic cells of 12 patients with acute myeloid leukaemia (AML) and nine patients with chronic myeloid leukaemia (CML). Using monoclonal antibodies to hsp70, hsp90 and hsp60 (ML30, a mycobacterial antigen with homology to human hsp60), we measured hsp level...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1995.tb03395.x
更新日期:1995-05-01 00:00:00
abstract::Proteasome inhibition induces the accumulation of aggregated misfolded/ubiquitinated proteins in the aggresome; conversely, histone deacetylase 6 (HDAC6) inhibition blocks aggresome formation. Although this rationale has been the basis of proteasome inhibitor (PI) and HDAC6 inhibitor combination studies, the role of d...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.13315
更新日期:2015-05-01 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
abstract::Because the phagocytic function of non-stimulated human polymorphonuclear granulocytes (PMN) is impaired after incubation with either polynuclear Fe(III) or Fe(II), we decided to study lipid peroxidation of PMN and monocytes by these iron complexes. Lipid peroxidation was assessed by measuring thiobarbituric acid reac...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1989.tb04328.x
更新日期:1989-08-01 00:00:00
abstract::This study was performed to assess the methods which gave maximal recovery of purified CD34/45+ cells from a cord blood specimen and optimal growth of progenitors cultured from the purified cells. Cord blood samples were separated using Percoll gradients (either one (1.080) or two successive (1.080 and 1.068) gradient...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1996.d01-1822.x
更新日期:1996-09-01 00:00:00