Abstract:
:Malaria parasites growing inside human erythrocytes differ from mammalian cells in their mode of acquisition of bioavailable iron and in their susceptibility to the antiproliferative action of iron chelators. We have assessed here three major properties associated with these phenomena: (a) the stage-dependent nature of parasite iron mobilization from the host and its integration into parasite proteins; (b) the differential permeability of the plasma membrane to iron chelators, and (c) the in situ generation of toxic chelator-metal complexes in the intracellular milieu of infected cells. We have used a combination of synthetic and natural iron chelators with similar iron-binding properties but markedly different capacities to permeate membranes. The profiles of action of these agents on the in vitro growth of Plasmodium falciparum were assessed in terms of inhibitory concentrations, speed of action, stage dependence and reversibility of effects. These profiles provided the basis for a working model of chelator action on parasitized cells. The model allowed us to predict major improvements in the antimalarial performance of iron chelators when used in appropriate combinations of slow-and fast-permeating substances. The synergistic actions found in vitro for various combinations of iron chelators are in accordance with the model and have implications for the design of therapeutic schemes.
journal_name
Acta Haematoljournal_title
Acta haematologicaauthors
Cabantchik ZI,Glickstein H,Golenser J,Loyevsky M,Tsafack Adoi
10.1159/000203952subject
Has Abstractpub_date
1996-01-01 00:00:00pages
70-7issue
1eissn
0001-5792issn
1421-9662journal_volume
95pub_type
杂志文章,评审abstract::At diagnosis, clonal gene rearrangement probes [retinoic acid receptor (RAR)-alpha, major breakpoint cluster region (M-bcr), immunoglobulin (Ig)-JH, T cell receptor (TcR)-beta, myeloid lymphoid leukemia (MLL) or cytokine genes (GM-CSF, G-CSF, IL-3)] were detected in bone marrow samples from 71 of 153 patients with acu...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000041035
更新日期:2000-01-01 00:00:00
abstract::Herein, we describe a case of a female patient in whom B cell chronic lymphocytic leukemia (CLL) and mantle cell lymphoma (MCL) were diagnosed simultaneously. She presented with anemia, thrombocytopenia and splenomegaly. Flow cytometry demonstrated two immunophenotypically distinct CD5-positive monoclonal B cell popul...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000324193
更新日期:2011-01-01 00:00:00
abstract::A 69-year-old man with a rare case of lymphoma-type alpha-chain disease was admitted to the hospital with marked cervical and inguinal lymph node swelling. Lymph node biopsy showed marked infiltration of plasma cells, plasmacytoid cells and immunoblastoid cells, alone or in combination. Immunoelectrophoresis and immun...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000204814
更新日期:1991-01-01 00:00:00
abstract::Human urinary erythropoietin has been purified to homogeneity. The seven-step procedure yielded a preparation with a potency of 225,000 U/mg protein. SDS-polyacrylamide gel electrophoretic analysis of the purified hormone revealed a single protein band with a molecular weight of about 35,000 that migrated with the bio...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000205057
更新日期:1990-01-01 00:00:00
abstract::To assess the effect of prophylactic treatment with antithymocyte globulin (ATG) on graft-versus-host disease (GvHD) in myeloablative transplant patients, we performed a meta-analysis of randomized and cohort studies. Medline, Embase, the Cochrane Controlled Trial Register and the Science Citation Index were searched ...
journal_title:Acta haematologica
pub_type: 杂志文章,meta分析,评审
doi:10.1159/000343604
更新日期:2013-01-01 00:00:00
abstract::This paper reports the bone marrow histological picture in 7 patients with hairy cell leukemia treated with recombinant interferon. Bone marrow biopsies were performed at diagnosis, after 1, 3 and 7 months from the beginning of treatment and at 12 months at treatment suspension. The main modifications observed were a ...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000205996
更新日期:1987-01-01 00:00:00
abstract::Macrothrombocytopenia (MTP) is a group of rare disorders characterized by giant platelets, thrombocytopenia, and variable association with abnormal bleeding. Inherited MTP are frequently misdiagnosed as immune thrombocytopenia. Associated second-organ manifestation can help narrow down syndromic MTPs. We describe a ca...
journal_title:Acta haematologica
pub_type:
doi:10.1159/000506727
更新日期:2021-01-01 00:00:00
abstract::Factor VIII (FVIII) inhibitor antibodies are produced against functional epitopes of FVIII in about 30% of severe hemophilia A patients leading to inhibition of its procoagulant activity. The Bethesda assay, the most commonly used method to measure FVIII inhibitors, based on inhibition of coagulant activity of FVIII, ...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000086580
更新日期:2005-01-01 00:00:00
abstract::A diester lipase activity is described in human red blood cells (RBC). Diester lipase activity acts as a membrane-bound enzyme and is assayed using intact RBC as the enzyme source. An emulsion of di-[3H]-oleoylglycerol (0.6 mM) serves as the substrate. The optimum pH for the reaction is 7.8 at 37 degrees C. Lipolytic ...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000206770
更新日期:1983-01-01 00:00:00
abstract::96 consecutive acute myelogenous leukemia (AML) patients were analyzed retrospectively with regard to the regimen used for remission induction. 35 patients received daunorubicin for 3 days, cytosine arabinoside and 6-thioguanine for 7 days. 61 were treated with the same regimen but 6-thioguanine was replaced by etopos...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000205173
更新日期:1990-01-01 00:00:00
abstract::Thalidomide acts on the microenvironment of myelodysplastic syndromes (MDS) by influencing cytokine networks, and growing evidence supports thalidomide's usefulness in the management of haematological malignancies, such as MDS. The European Collaboration Group on Myelofibrosis with Myeloid Metaplasia reviewed patients...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000087042
更新日期:2005-01-01 00:00:00
abstract::Successive chromatographic procedures made it possible to isolate thrombocytopoietin from the serum of thrombocytopenic rats. The following steps were taken: DEAE-cellulose phosphate chromatography, Sephadex chromatography, exclusion chromatography on DEAE-Sephadex A-50 gel. The apparent molecular weight of thrombocyt...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000206900
更新日期:1983-01-01 00:00:00
abstract::Low-risk patients with myelodysplastic syndromes (MDS) are inclined to long-term accumulation of iron in the organs due mostly to red blood cell transfusion and ineffective erythropoiesis. The effect of free toxic iron species in the liver and heart sites is well known, but recent knowledge assumes that oxidant-mediat...
journal_title:Acta haematologica
pub_type: 新闻
doi:10.1159/000510111
更新日期:2020-10-02 00:00:00
abstract::A mild anemia (hemoglobin 9 g/dl) was found in a patient from Seville (Spain) with marked morphological abnormalities in the peripheral blood smear. The red cell osmotic fragility showed a mild resistance curve with a mean cell fragility (MCF) of 0.375% NaCl (normal = 0.450). Chemical Chemical and thermal instability ...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000206274
更新日期:1985-01-01 00:00:00
abstract::Non-transfusion-dependent thalassemia (NTDT) is associated with various forms of thalassemia and genetic modifiers. We report the molecular basis of NTDT in hemoglobin (Hb) E-β-thalassemia disease. This study was done in 73 adult patients encountered at the prenatal diagnosis center of Khon Kaen University, Northeast ...
journal_title:Acta haematologica
pub_type: 临床试验,杂志文章
doi:10.1159/000449120
更新日期:2016-01-01 00:00:00
abstract::Agranulocytosis developed in a 20-year-old Greek patient with beta-thalassaemia major, 11 weeks after commencing chelation with the oral iron chelator 1,2-dimethyl-3-hydroxypyrid-4-one (L1) and 6 weeks after receiving the drug at a total daily dose of 105 mg/kg. The patient presented with generalised weakness, low-gra...
journal_title:Acta haematologica
pub_type: 临床试验,杂志文章
doi:10.1159/000204494
更新日期:1993-01-01 00:00:00
abstract::Among the 193 patients (82 female, 111 male) treated primarily for Hodgkin's disease at our clinic between 1990 and 2001 and followed up until 2003, 42 (22%) had mediastinal bulky tumours (MBTs) by the Cotswolds criteria. The rate of MBT diagnosis was significantly greater in the early stage of the disease, these pati...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000081271
更新日期:2004-01-01 00:00:00
abstract::In a group of 56 patients with acute leukaemia, the relation between leukaemic cell motility and peripheral leukaemic cell count, degree of organomegaly, maturation and FAB classification was investigated. Cell motility was studied by means of directly observed motility and scoring of handmirror cells and anti-HLA-cap...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000205595
更新日期:1988-01-01 00:00:00
abstract::In a previous study, we evaluated efficacy of repeated antilymphocyte globulin (ALG) treatment for patients with severe aplastic anemia not responding to an initial ALG treatment or relapsing after initial response to ALG. We now searched in the same cohort of patients for differences between patients who responded to...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000041005
更新日期:2000-01-01 00:00:00
abstract:OBJECTIVE:To review the diagnostic significance, safety and possible risk factors of splenectomy in fever of unknown origin (FUO) with splenomegaly. METHODS:The records of 54 patients with FUO and splenomegaly who underwent splenectomy in our hospital in the past 20 years were reviewed retrospectively. Pathologic find...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000118632
更新日期:2008-01-01 00:00:00
abstract:BACKGROUND:Our aim is to determine comorbidities associated with pulmonary hypertension (PHT) in clinically stable sickle-cell disease (SCD) patients and to evaluate left ventricular (LV) and right ventricular (RV) function in those patients. METHODS:Echocardiography was performed in 87 SCD patients that were divided ...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000102588
更新日期:2007-01-01 00:00:00
abstract::Peripheral blood stem cells (PBSC) are widely used in the setting of dose-intensive chemotherapies in patients with multiple myeloma (MM). Although the granulocyte colony-stimulating factor (G-CSF), following chemotherapy or not, is considered the standard growth factor for mobilizing PBSC, the optimal chemotherapeuti...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000070967
更新日期:2003-01-01 00:00:00
abstract::Eleven patients with acute myeloid leukaemia (AML) in first complete remission (CR) were treated with alfa-2a-interferon (for short 'interferon') maintenance therapy, at a dose of 3 MU twice to thrice weekly subcutaneously. Adjustments were made to maintain neutrophil counts > 1 x 10(9)/l and platelet counts > 100 x 1...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000204473
更新日期:1993-01-01 00:00:00
abstract::A 29-year-old man with acute myelomonocytic leukemia had an initial leukocyte count of 192 X 10(9) cells/l and 84% blasts. During the initial treatment with hydroxyurea, 1 g/m2 orally tid, he developed pulmonary leukostasis which responded rapidly to whole-lung radiation with 1.5 Gy in one fraction. Pulmonary leukosta...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000205987
更新日期:1987-01-01 00:00:00
abstract::Significant DNA polymorphisms have been reported in the beta-globin gene cluster of epsilon-G gamma-A gamma-psi beta-delta-beta-gene region, in normal (Hb AA) individuals and in patients with sickle cell anaemia (SCA). Investigations of the extent of the DNA polymorphisms in the beta A- and beta S-globin gene cluster ...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000204653
更新日期:1992-01-01 00:00:00
abstract::G-banded cytogenetic studies of 3 male patients in the terminal phase of chronic myeloid leukemia showed the following abnormalities: in the first case, the presence of a medullar cell line with 51 chromosomes and 3 Ph1; in the second case, a clone with 65 chromosomes and 4 Ph1, and in the third patient a clone with 5...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000207047
更新日期:1982-01-01 00:00:00
abstract::Platelet functions were evaluated in 20 healthy pregnant women in the last months of pregnancy, during labor, and 5-12 weeks after labor. The results showed an increased platelet count, bleeding time and nitroblue tetrazolium (NBT) test, as well as an increased plasma calcium level postlabor. ADP- and epinephrine-indu...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000207151
更新日期:1981-01-01 00:00:00
abstract:BACKGROUND:It is a common belief among women that iron compounds have unpleasant gastrointestinal side effects. OBJECTIVE:To assess the gastrointestinal side effects of iron prophylaxis in pregnancy. METHODS:A randomized, double-blind study comprising 404 healthy pregnant women allocated to four groups taking ferrous...
journal_title:Acta haematologica
pub_type: 杂志文章,随机对照试验
doi:10.1159/000089466
更新日期:2006-01-01 00:00:00
abstract::In the chronic wound, the normal cascade of inflammation, granulation and reconstruction phases of healing is interrupted. Cytokines are now known to orchestrate different biochemical mediators resulting in the restoration of the healing phases. Growth factors may play a significant role in stimulating wound repair by...
journal_title:Acta haematologica
pub_type: 杂志文章,评审
doi:10.1159/000040833
更新日期:1998-01-01 00:00:00
abstract::In a case of preleukemic dyserythropoiesis, in vitro red cell lysis tests showed a positive acidified serum test whose characteristics are described. The positive acidified serum test occurred in 10 normal sera, in 1 serum with complete deficiency of the fourth component of complement and in 1 serum with complete defi...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000207748
更新日期:1978-01-01 00:00:00