Abstract:
:Increased levels of hemoglobin A(2) (HbA(2)) are present in most beta-thalassemia carriers. The mechanism of this effect is not understood, although the increase may result from transcriptional and posttranscriptional changes. In the present study, we quantitate delta-globin mRNA levels in peripheral-blood-enriched reticulocytes and characterize the variation of delta-mRNA levels in 30 beta-thalassemia heterozygotes who individually carry one of the four common Chinese beta-thalassemia alleles [codons 41/42 (-TTCT); codon 17 (A-->T); IVS-II-654 (C-->T); -28 (A-->G)]. A sensitive and quantitative competitive reverse-transcriptase polymerase chain reaction method was developed and used to assess the absolute amounts of delta-mRNA transcripts in these peripheral erythroid cells. The results showed a large increase in delta-mRNA amounts in all the carriers examined (72.3 +/- 9.0 amol/microg RNA) as compared with those in 12 controls (1.2 +/- 0.2 amol/ microg RNA). There was a direct correlation between the delta-mRNA levels and types of beta-thalassemia alleles; generally, the delta-mRNA levels are higher in heterozygotes for beta(0)-thalassemia mutations than beta(+)-thalassemia mutations. The delta-mRNA levels correlated inversely with hemoglobin and red cell indices but directly with HbA(2) levels in heterozygotes of each of the group of beta-thalassemia mutations. These results suggest that a greater impairment in beta-globin gene expression results in increased transcription of delta-globin gene and in a higher level of HbA(2).
journal_name
Acta Haematoljournal_title
Acta haematologicaauthors
Huang SZ,Zeng FY,Chen MJ,Ren ZR,Shen M,Rodgers GP,Schechter AN,Zeng YTdoi
10.1159/000040959subject
Has Abstractpub_date
1999-01-01 00:00:00pages
1-6issue
1eissn
0001-5792issn
1421-9662pii
40959journal_volume
102pub_type
杂志文章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::The most common single genetic disorder and a major public health issue in Greece and other Mediterranean countries is beta-thalassemia. Current therapeutic approaches for homozygous beta-thalassemia entail blood transfusions and iron chelation therapy with deferoxamine or deferiprone for preventing tissue hemosideros...
journal_title:Acta haematologica
pub_type: 临床试验,杂志文章
doi:10.1159/000077551
更新日期:2004-01-01 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::During a screening for hemoglobinopathies, we found a carrier of the Sardinian δβ-thalassemia condition. The proband's hematology and hemoglobin (Hb) profile agreed with those of the other carriers previously identified during our diagnostic program except for the fetal Hb (HbF) composition, which consisted of both α2...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000447942
更新日期:2016-01-01 00:00:00
abstract::The plasma cortisol levels of 108 children aged 1-16 years with various Hb genotypes (AA, AS and SS) were measured. The mean plasma cortisol levels of both the AS and SS groups (during steady state) fell within the normal range but the mean of the SS group is significantly lower than the AA group. In fact, 9 of the si...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000205689
更新日期:1988-01-01 00:00:00
abstract::In a 42-year-old Caucasian female, acute myelocytic leukemia (M2) presented as occlusion of the distal aorta and right iliac artery. She died after 10 days of respiratory failure. At postmortem examination the aortic wall contained multiple thrombi composed of fibrin and leukemic cells. There was no evidence of diffus...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000206100
更新日期:1986-01-01 00:00:00
abstract::A new case of IgE myeloma is described. A 77-year-old woman presented with bone pain and fatigue. Serum protein analysis revealed a paraprotein of the IgE kappa type; bone marrow aspirate and immunofluorescence confirmed the diagnosis; ultrastructural examination showed immature plasma cells. Treatment with prednisone...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000204851
更新日期:1991-01-01 00:00:00
abstract::Bone marrow fragments from 10 patients with a megaloblastic anaemia due to vitamin B12 or folate deficiency were studied by electron microscopy and electron microscope autoradiography. A proportion of the erythroblasts showed ultrastructural abnormalities. Some of the cells containing autophagic vacuoles, large sidero...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000207854
更新日期:1977-01-01 00:00:00
abstract::We describe an unusual case of invasive pulmonary aspergillosis (IPA) complicated by subclavian artery occlusion in a 32-year-old man with severe aplastic anemia, who underwent allogeneic stem cell transplantation. He was severely neutropenic after the conditioning for transplantation, but he had no history of fungal ...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000203614
更新日期:1997-01-01 00:00:00
abstract::Primary lymphoma of the female genital tract is very rare. We report the case of a 36-year-old woman who was referred to our hospital because of an indeterminate Pap smear test. The colposcopy showed a thickening of the posterior vaginal wall and various irregular ulcerated nodular lesions. Histological examination, i...
journal_title:Acta haematologica
pub_type: 杂志文章,评审
doi:10.1159/000337336
更新日期:2012-01-01 00:00:00
abstract:INTRODUCTION:Tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) down-regulation by preferentially expressed antigen of melanoma (PRAME) is a general phenomenon in different types of solid tumours, but research on the correlation between PRAME and TRAIL gene expression in leukaemia patients is rare. METHO...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000351166
更新日期:2013-01-01 00:00:00
abstract::Basic fibroblast growth factor (b-FGF) mediates a variety of biological responses such as angiogenesis and hematopoiesis. We examined the effect of b-FGF on human neutrophil functions in vitro. The surface expression of effector cell molecules on neutrophils was determined by flow cytometry and monoclonal antibodies. ...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000041024
更新日期:2000-01-01 00:00:00
abstract::High-dose gammaglobulin therapy for patients with idiopathic thrombocytopenic purpura (ITP), introduced by Imbach et al., was applied to 5 adults with chronic refractory ITP to investigate the mechanism of the increase in platelet counts. In 4 of the 5 cases, transient increase in platelet count was observed. Platelet...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000206927
更新日期:1983-01-01 00:00:00
abstract::Treatment of chronic myeloid leukemia (CML) and Philadelphia chromosome-positive acute leukemia (Ph+ ALL) has been revolutionized with the advent of tyrosine kinase inhibitors (TKIs). Most patients with CML achieve long-term survival similar to individuals without CML due to treatment with TKIs not only in frontline b...
journal_title:Acta haematologica
pub_type: 共识发展会议,杂志文章,评审
doi:10.1159/000501927
更新日期:2020-01-01 00:00:00
abstract::Treatment options are limited for patients with advanced forms of myeloproliferative neoplasms (MPN) including blast-phase disease (MPN-BP). Decitabine has frequently been deployed but its efficacy and safety profile are not well described in this population. We retrospectively reviewed 42 patients treated with decita...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000506146
更新日期:2021-01-01 00:00:00
abstract::A 56-year-old male presented with inguinal lymphadenopathy and leucocytosis (WBC 98 x 10(9)/l). Bone marrow morphology showed myeloid hyperplasia, with eosinophilia. Cytogenetic analysis showed no evidence of the Philadelphia chromosome, and fluorescence in situ hybridisation studies for the BCR/ABL fusion were negati...
journal_title:Acta haematologica
pub_type: 杂志文章,评审
doi:10.1159/000046638
更新日期:2002-01-01 00:00:00
abstract::The frequency of chronic lymphocytic leukemia (CLL) varies a great deal from one population to another. We have undertaken to compare the aspects of CLL in Maghreb and Europe through two series of comparable importance, studied during the same period and under similar conditions in Algiers and Amiens. This comparison ...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000206896
更新日期:1983-01-01 00:00:00
abstract::The level of granulocyte-macrophage colony-stimulating factor (GM-CSF) in the cerebrospinal fluid from 14 infants and children with meningitis and 6 patients who suffered other diseases besides meningitis was measured by our sensitive enzyme linked immunosorbent assay for GM-CSF. The minimal detection level of GM-CSF ...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000204796
更新日期:1991-01-01 00:00:00
abstract::Of 34 patients with chronic inflammatory bowel disease (CIBD), 4 developed well-documented episodes of deep-venous thrombosis. All 4 patients had active disease at the time of thrombosis. This group was studied to determine if the tendency to deep-venous thrombosis in patients with CIBD was associated with reduced ant...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000206688
更新日期:1983-01-01 00:00:00
abstract::Total and unsaturated folate binding capacity (TFBC, UFBC) have been measured in sera of selective groups of patients to study the role of cell turnover, cell necrosis and the effect of pregnancy in determining their concentrations in blood. The mean value of TFBC in 35 normal sera was 151 +/- (SD) 53 pg/ml with a sat...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000207657
更新日期:1979-01-01 00:00:00
abstract::Platelet aggregation induced in vitro with ADP, adrenalin and ristocetin was tested in 7 patients with megakaryoblastic leukemia (MKL). All patients had normal or high platelet counts and presented with hemorrhagic diathesis including purpura ecchymosis and epistaxis. Platelet morphology was grossly abnormal and elect...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000206366
更新日期:1984-01-01 00:00:00
abstract:BACKGROUND:This study aimed to compare the curative effects of the combination therapy of all-trans-retinoic acid (ATRA) and arsenic trioxide (ATO, As₂O₃) with ATRA monotherapy on newly diagnosed acute promyelocytic leukemia (APL). METHODS:The studies were retrieved from PubMed, EMBASE, Cochrane Library, ChinaInfo and...
journal_title:Acta haematologica
pub_type: 杂志文章,meta分析
doi:10.1159/000369242
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:Danaparoid sodium and synthetic protease inhibitors (SPIs) have been approved for the treatment of disseminated intravascular coagulation (DIC) in Japan. OBJECTIVES:To compare the clinical results of the treatment of DIC with danaparoid or SPIs. METHODS:We retrospectively examined 188 patients with hematol...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000501818
更新日期:2020-01-01 00:00:00
abstract::The adaptation of cell physiological parameters of erythrocytes of the newborn to erythrocytes in later life was studied by cell separation in an isopycnic dextran density gradient. The cell characteristics during the first trimester of life were followed by repeated determinations. The mean cellular haemoglobin conce...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000207034
更新日期:1982-01-01 00:00:00
abstract::The fibrinolytic response to surgical trauma was studied longitudinally in 7 pigs by measuring the fibrinolytic activity in the blood and vein wall simultaneously. The results indicated a marked suppression in fibrinolytic activity in the blood which was closely correlated with the activity in the vein wall. This corr...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000207397
更新日期:1980-01-01 00:00:00
abstract::Aspirates from bone marrow, spleen and liver were morphologically analysed in 15 untreated patients wich chronic myeloid leukaemia. Megaloblastic changes of the erythroblasts were found to be more common in the spleen and liver than in the bone marrow. A significant increase of 'erythroblastic islands', i.e. erythrobl...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000208026
更新日期:1976-01-01 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::Two family members (daughter and mother) with a bleeding disorder showed prolonged bleeding time and activated partial thromboplastin time associated with decreased plasma levels of factor VIII procoagulant activity, factor VIII-related antigen, and factor VIII-ristocetin cofactor activity. The ristocetin-induced plat...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000206579
更新日期:1984-01-01 00:00:00
abstract::A patient with regional enteritis had received iron dextran for treatment of iron deficiency. Subsequently he developed a large (3.1 g/100 ml) IgG-K serum spike which had precipitin activity against dextran sulfate but not a variety of other antigens. There has been no evidence of multiple myeloma and the spike gradua...
journal_title:Acta haematologica
pub_type: 杂志文章
doi:10.1159/000207755
更新日期:1978-01-01 00:00:00
abstract::Systematic reviews and meta-analyses have made a major contribution to the evidence-based management of infections in cancer patients. We review the contribution of systematic reviews with regard to antibiotic, antifungal, antiviral and Pneumocystis pneumonia prophylaxis; antibiotic and antifungal treatment of febrile...
journal_title:Acta haematologica
pub_type: 杂志文章,评审
doi:10.1159/000318900
更新日期:2011-01-01 00:00:00