Abstract:
:The existence of functional gap junctions between haematopoietic progenitor cells (HPCs) and stromal cells of the haematopoietic microenvironment in the human system is a controversial issue. Primary CD34+ HPCs isolated from leukapheresis products were co-incubated with the human fibroblastoid bone marrow stromal cell line L87/4 in short-term liquid culture. Using the highly sensitive double whole-cell patch-clamp technique, we found that the majority (91%) of CD34+ HPCs are electrically coupled to L87/4 cells. Importantly, efficient coupling was observed within 1 h of the attachment of CD34+ HPCs to plastic adherent L87/4 cells. By comparison, homologous cell pairs formed by L87/4 cells exhibited a significantly higher electric coupling. Analysis of single-channel conductances revealed an electric profile characteristic of connexin 43 (Cx43)-type gap junctions for both homologous and heterologous cell pairs. The Cx phenotype was confirmed using Cx43-specific monoclonal antibodies in a flow cytometric assay and reverse transcription polymerase chain reaction (RT-PCR) for the detection of Cx43 mRNA. Finally, the electrophysiological studies were complemented by dye-transfer experiments using the recently described 'parachute' technique that allows the monitoring of dye diffusion without disruption of the plasma membrane. Taken together, our data indicate that functional Cx43-type gap junctions exist between stromal cells and immature HPCs and, thus, may provide an important regulatory pathway in haematopoiesis.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Dürig J,Rosenthal C,Halfmeyer K,Wiemann M,Novotny J,Bingmann D,Dührsen U,Schirrmacher Kdoi
10.1046/j.1365-2141.2000.02385.xsubject
Has Abstractpub_date
2000-11-01 00:00:00pages
416-25issue
2eissn
0007-1048issn
1365-2141pii
bjh2385journal_volume
111pub_type
杂志文章abstract::The H-2Kappab temperature-sensitive (ts) A58 transgenic (Immorto) mouse has been used previously to generate conditionally immortalized cells from a number of tissues. The present study aimed to investigate characteristics of primitive myeloid precursor cells derived from H-2Kappab-tsA58 bone marrow. Cell populations ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2003.04537.x
更新日期:2003-09-01 00:00:00
abstract::Imatinib mesylate is useful for facilitating allogeneic stem cell transplantation (allo-SCT) in advanced-phase chronic myelogenous leukaemia (AP-CML) patients. However, although the side-effects of imatinib are usually minor, cardiac morbidity can develop as a latent adverse effect post SCT when a myeloablative SCT is...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2003.04288.x
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abstract::Sickle cell disease (SCD) affects approximately 100,000 people in the US, 12,500 in the UK, and millions worldwide. SCD is typified by painful vaso-occlusive episodes, haemolytic anaemia and organ damage. A secondary complication is infection, which can be bacterial, fungal or viral. Universal newborn screening, routi...
journal_title:British journal of haematology
pub_type: 杂志文章,评审
doi:10.1111/bjh.13526
更新日期:2015-09-01 00:00:00
abstract::The contribution of red cell size (mean cell volume) to the clinical and haematological manifestations of homozygous sickle cell (SS) disease has been investigated by comparing the features of two groups of patients with low (less than or equal to 80 fl) and high (greater than 95 fl) MCV values after matching for age,...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1981.tb02736.x
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abstract::Juvenile myelomonocytic leukaemia (JMML) is a unique myeloproliferative disorder of early childhood. Frequently, mutations in NRAS, KRAS, PTPN11, NF1 or CBL are found in these patients. Monosomy 7 is the most common cytogenetic aberration. To identify submicroscopic genomic copy number alterations, 20 JMML samples wer...
journal_title:British journal of haematology
pub_type: 杂志文章,评审
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abstract::Salivary gland mucosa-associated lymphoid tissue (MALT) lymphomas (SGML) are rare, as are data concerning their behaviour. We analysed clinical features at presentation, particularly the association with Sjoegren syndrome (SS) and hepatitis C virus (HCV) infection, and outcome in 33 cases of SGML diagnosed between Mar...
journal_title:British journal of haematology
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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
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更新日期:1995-03-01 00:00:00
abstract::Blood from five donors, previously shown to be positive for cytomegalovirus (CMV) DNA following polymerase chain reaction (PCR) amplification, was filtered through commercially available leucocyte filters. Analysis of pre- and post-filtration samples by PCR with ethidium bromide staining has shown that filtration was ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1993.tb04703.x
更新日期:1993-04-01 00:00:00
abstract::Acquired haemophilia A (AHA) is a rare bleeding disorder characterized by the sudden generation of autoantibodies against factor VIII (FVIII) in individuals with no previous history of abnormal haemostasis. Understanding the pathogenesis of this disease has been hampered by the rarity of the patients and the difficult...
journal_title:British journal of haematology
pub_type: 杂志文章,评审
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abstract::We used minisatellite probes to analyse by DNA fingerprints the long-term engraftment (median 4.3 years, range 1-2) of 21 bone marrow transplantation recipients for severe aplastic anaemia. Patients received their graft from histocompatible siblings. They were conditioned with cyclophosphamide (150 mg/kg) and a 6GY th...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1989.tb06313.x
更新日期:1989-04-01 00:00:00
abstract::The combination of interleukin (IL)-4 and IL-10 protects against blood-induced cartilage damage in vitro. It has been hypothesized that the combination of these cytokines is effective if applied early in the process of cartilage damage. The present study investigated whether a single intra-articular injection of IL-4 ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.12148
更新日期:2013-02-01 00:00:00
abstract::The existence of a phenomenon of rebound hypercoagulability after cessation of oral anticoagulant therapy is controversial. The sensitive procoagulant markers for in vivo thrombin and fibrin formation are potential tools for the reassessment of the presence of each a phenomenon. We examined 19 patients anticoagulated ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1996.d01-1499.x
更新日期:1996-02-01 00:00:00
abstract::The incidence of alpha-thalassaemia in an Italian population has been determined by a survey of random cord bloods for the presence of Hb Bart's. 144 out of 4730 (3%) had detectable amounts of Hb Bart's. Furthermore, alpha-globin gene analysis of 100 random cord bloods showed that five out of 100 had the common type o...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1986.tb07526.x
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abstract::Plasma and urine folate fractions were evaluated after ingestion of radioactive N5-methyl-tetrahydrofolic acid by a normal control (subject I), a patient on maintenance haemodialysis for chronic glomerulonephritis (subject 2), and an anephric patient on haemodialysis (subject 3). In subjects 1 and 2 maximal plasma rad...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1977.tb00664.x
更新日期:1977-07-01 00:00:00
abstract::Four children with acute lymphoblastic leukaemia (ALL) who relapsed after allogeneic bone marrow transplantation (BMT) were treated with donor lymphocyte infusion (DLI) without prior conditioning. Three patients had previously received a non-T-cell-depleted matched sibling BMT and the fourth had a T-cell-depleted matc...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1997.62650.x
更新日期:1997-04-01 00:00:00
abstract::Type 3 von Willebrand disease, a recessive autosomally inherited bleeding disorder, refers to complete deficiency of von Willebrand factor (VWF). The novel Q1311X mutation was detected in the homozygous state in four Spanish patients from two apparently unrelated families of gypsy origin. The lack of specific amplific...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2000.02410.x
更新日期:2000-11-01 00:00:00
abstract::Interleukin 17A (IL17A), a cytokine involved in allergy, inflammation and osteoclastogenesis, was investigated in multiple myeloma (MM) to assess its role in the osteoclast (OC)-like activity of marrow immature dendritic cells (iDCs). Comparing nine MM patients with control subjects affected by monoclonal gammopathy o...
journal_title:British journal of haematology
pub_type: 杂志文章
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更新日期:2013-06-01 00:00:00
abstract::A pilot trial was initiated for chronic myeloid leukaemia patients, which employed imatinib for remission induction, followed by reduced-intensity conditioning and an in vivo T-cell depleted graft. Out of nine patients, six experienced a molecular relapse and one patient had a haematological relapse at a median interv...
journal_title:British journal of haematology
pub_type: 临床试验,杂志文章
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journal_title:British journal of haematology
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abstract::The EGFP-tk retroviral vector, encoding enhanced green fluorescent protein (EGFP) and the herpes simplex virus thymidine kinase (HSV-tk) packaged in a Phoenix amphotropic cell line, was used to transduce healthy donor T lymphocytes. Infection yielded a mean of 41.8 +/- 9.3% SD (range 31.1-48.4%) EGFP-positive cells an...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.2000.02264.x
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abstract::A patient with advanced myeloid metaplasia was treated with alpha-interferon (29 months) with a remarkable response. He had anaemia, thrombocytopenia and hepatosplenomegaly with infarction. The initial bone marrow showed replacement with fibrosis with no evident haemopoietic cells. Post-therapy, the patient became asy...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1994.tb04802.x
更新日期:1994-03-01 00:00:00
abstract::Relapse remains the leading cause of treatment failure in children with acute lymphoblastic leukaemia (ALL) undergoing allogeneic haematopoietic stem cell transplantation (HSCT). We retrospectively investigated the prognostic role of minimal residual disease (MRD) before and after HSCT in 119 children transplanted in ...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.15086
更新日期:2018-03-01 00:00:00
abstract::Most haemolytic disease is mediated by immunoglobulin G (IgG) antibodies and leads to red blood cell destruction outside of the circulatory system. However, rare syndromes, such as paroxysmal cold haemoglobinuria, show IgG antibodies causing intravascular destruction. Haemolysis may also occur because of immunoglobuli...
journal_title:British journal of haematology
pub_type: 杂志文章,评审
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更新日期:2007-08-01 00:00:00
abstract::We detected two transversions in two unrelated Italian patients with type 2A von Willebrand disease (VWD): a C to A at nucleotide 8821 and a T to A at nucleotide 8830, resulting in the missense mutations Pro864His and Val867Glu respectively. Both mutations were in the heterozygous form and abolished the BstXI restrict...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1998.01064.x
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abstract::Membrane protein synthesis in human immature erythroid cells was studied by incubating the cells with 35S-methionine in vitro. The radioactive precursor amino acid was incorporated into membrane protein in a linear fashion for approximately 60 min, after which there was only a slight increase in incorporation. Intrace...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/j.1365-2141.1981.tb02777.x
更新日期:1981-02-01 00:00:00
abstract::Globin synthesis was studied in four Negro families including 10 members with Hb A-HPFH and four with Hb S-HPFH. The beta/alpha specific activity ratios in 10 of these HPFH heterozygotes were similar to those of the control group. In two patients with Hb A-HPFH, the beta/alpha ratio was slightly decreased in one (0.84...
journal_title:British journal of haematology
pub_type: 杂志文章
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更新日期:1976-03-01 00:00:00
abstract::Mantle cell lymphoma (MCL), a malignancy of B-lymphocytes, has a poor prognosis. It is thus necessary to improve the understanding of the pathobiology of MCL and identify factors contributing to its aggressiveness. Our studies, based on Affymetrix data from 17 MCL biopsies, real-time quantitative polymerase chain reac...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.15810
更新日期:2019-05-01 00:00:00
abstract::Following bone marrow stem cell transplantation allo-responses against haemopoietic progenitor cells (HPC), causing graft rejection and graft-versus-leukaemia effects, can be induced by donor T cells recognizing peptides derived from polymorphic endogenous proteins present in HPC. Since CD33 and CD34 are both expresse...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1046/j.1365-2141.1998.00906.x
更新日期:1998-09-01 00:00:00
abstract::Adult T cell leukaemia/lymphoma (ATL) is a human T cell leukaemia virus type-I (HTLV-I)-infected T cell malignancy with poor prognosis. We herein developed a novel therapeutic vaccine designed to augment an HTLV-I Tax-specific cytotoxic T lymphocyte (CTL) response that has been implicated in anti-ATL effects, and cond...
journal_title:British journal of haematology
pub_type: 杂志文章
doi:10.1111/bjh.13302
更新日期:2015-05-01 00:00:00