Abstract:
:Neutrophils that bear receptors for the Fc portion of immunoglobulin G have been demonstrated to be more active in assays of adherence, aggregation, and chemotaxis compared to Fc receptor-negative cells. We examined the relationship of neutrophil Fc receptor activity and cell-cell adherence or aggregation induced by phorbol myristate acetate. In contrast to 1-isoproterenol, isobutyl-methyl-xanthine, and dibutyryl cAMP, each of which inhibited Fc receptor activity and neutrophil aggregation, theophylline significantly impaired aggregation without affecting Fc receptor activity. The selective beta-2 agonist, metaproterenol, and 8-Bromo cAMP failed to inhibit Fc receptor activity or neutrophil aggregation. Three known inducers of neutrophil intracellular cyclic AMP, PGE1, PGE2, and cholera toxin, also did not inhibit Fc receptor activity. Inhibition of Fc receptor activity by 95% in the presence of purified Fc fragments did not affect neutrophil aggregation. Similarly suppression of Fc receptor activity by purified Fc fragments did not inhibit neutrophil adhesion to nylon fiber columns. These data demonstrate that the Fc receptor does not mediate phorbol myristate acetate-induced cell-cell adhesion and is not necessary for optimal neutrophil adhesion to nylon fibers. Our results are consistent with the possibility that the reversible inhibitory activity of beta-adrenergic agonists on rosette formation may be a steric effect rather than a metabolic effect. These data tend to dissociate Fc receptor activity, neutrophil aggregation, and adhesion and support the hypothesis that the Fc receptor may be a marker of neutrophil heterogeneity rather than a component necessary for optimal neutrophil aggregation or adhesion.
journal_name
Am J Hematoljournal_title
American journal of hematologyauthors
Spagnuolo PJ,Fain M,Bass SNdoi
10.1002/ajh.2830260303subject
Has Abstractpub_date
1987-11-01 00:00:00pages
221-8issue
3eissn
0361-8609issn
1096-8652journal_volume
26pub_type
杂志文章abstract::Lenalidomide and azacitidine are active in MDS patients, and may complement each other by targeting the bone marrow microenvironment and the malignant clone. A recent Phase I trial testing the lenalidomide and azacitidine combination yielded encouraging results; however, lenalidomide’s contribution was unclear. In thi...
journal_title:American journal of hematology
pub_type: 杂志文章,多中心研究
doi:10.1002/ajh.21891
更新日期:2011-01-01 00:00:00
abstract::This study concerned the gamma chain composition of Hb F and the haplotypes of 44 patients with beta-thalassemia major or intermedia and many of their relatives. Seventeen patients came from Northern (Turkish) Cyprus, 12 from the Istanbul area, and 15 from Macedonia and Bulgaria. Analysis of the A gamma T-G gamma-A ga...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830200103
更新日期:1985-09-01 00:00:00
abstract::Some properties of a monoclonal antibody generated against the fibrinogen component of a factor VIII preparation were investigated. The antibody bound with equal affinity in solid phase radioimmunoassays to fibrinogens isolated from both normal patients and patients with von Willebrand disease. It reacted in a sensiti...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830180202
更新日期:1985-02-01 00:00:00
abstract::Sitosterolemia (phytosterolemia) is a rare inherited sterol storage disorder, characterized by significantly elevated plasma levels of plant sterols. The clinical features of sitosterolemia are xanthomas, premature atherosclerosis, arthritis, and, occasionally, liver function impair and hematologic abnormalities. This...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.23619
更新日期:2014-03-01 00:00:00
abstract::An association between thrombocytopenia and thyrotoxicosis in a single individual is well documented, and the theories for this event include a common immunologic cause or a thyrotoxic-induced decrease in platelet survival. We report the first description of the coexistence of autoimmune thrombocytopenic purpura (AITP...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830390411
更新日期:1992-04-01 00:00:00
abstract::Bone marrow cells, peripheral blood lymphocytes, and sera from patients with sickle-cell anemia in hypoproliferative crisis were studied in the plasma clot culture system in the presence or absence of erythropoietin (Epo). Bone marrow cells from five patients demonstrated a marked ability to form erythroid colonies in...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830080103
更新日期:1980-01-01 00:00:00
abstract::Febrile neutropenia (FN) is a frequent complication of cancer chemotherapy, which causes death in 4-21% of patients and worsens the quality of life of patients. As a simple and accurate way of identifying patients who are at risk of FN, a lymphocyte count on post-chemotherapy day 5 was suggested. To confirm the feasib...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.10363
更新日期:2003-08-01 00:00:00
abstract::Autologous stem cell transplantation (ASCT) is feasible and effective in selected older patients with Multiple Myeloma, but specific criteria for evaluating ASCT eligibility in elderly patients are lacking. We evaluated 131 patients aged 65-75 considered for ASCT at our center: The Charlson Comorbidity Index (CCI), He...
journal_title:American journal of hematology
pub_type: 临床试验,杂志文章
doi:10.1002/ajh.25797
更新日期:2020-07-01 00:00:00
abstract::Cultured endothelial cells from bovine aorta were exposed to oxidized low density lipoprotein and examined by electron microscopy. The endothelial cells contracted slightly and the intercellular junctions became unclear. Some osmiophilic material increased in the cytoplasm. The oxidized low density lipoprotein appears...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830490315
更新日期:1995-07-01 00:00:00
abstract::Alpha-hemoglobin stabilizing protein (AHSP) is a potential modifier of beta-thalassemia by virtue of its ability to detoxify excess free alpha-globin. However, examination of patients with beta-thalassemia from a few geographic regions failed to identify obvious AHSP mutations. We extended these studies by analyzing A...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.21041
更新日期:2008-02-01 00:00:00
abstract::The content of peripheral blood B cells (B1+) was reduced in patients of multiple myeloma (MM) and not in those with benign monoclonal gammopathy (BMG) compared to normal donors (P less than 0.01). This observation correlated with the suppression of synthesis of normal immunoglobulin (Ig) in MM. Thus, cytokine activit...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830300208
更新日期:1989-02-01 00:00:00
abstract::Evidence suggest that even patients aged 70 or above benefit from specific AML therapy. The fundamental decision in AML then becomes whether to recommend standard or investigational treatment. This decision must rest on the likely outcome of standard treatment. Hence we review factors that predict treatment related mo...
journal_title:American journal of hematology
pub_type: 杂志文章,评审
doi:10.1002/ajh.24439
更新日期:2016-08-01 00:00:00
abstract::A 71-year-old woman and her elder sister developed ligneous conjunctivitis after ocular surgery. Laboratory tests demonstrated that the proband and her sister had 6.6% and 8.1% of plasminogen activity, and 1.2 and 1.4 mg/dl of antigen, respectively. Thus, they were diagnosed as having severe type I plasminogen deficie...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.21402
更新日期:2009-06-01 00:00:00
abstract::Several studies provided evidence of a consistent antileukemic effect induced by cytomegalovirus (CMV) replication in acute myeloid leukemia (AML) patients receiving allogeneic hematopoietic stem cell transplantation (HSCT), however the use of antithymocyte globulin (ATG) as graft-versus-host disease prophylaxis, may ...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.23998
更新日期:2015-06-01 00:00:00
abstract::Karyotypic analysis at time of diagnosis has an important value in determining initial response to treatment, remission duration and overall survival (OS) in acute myeloid leukemia (AML). Less is known about its value before allogeneic hematopoietic cell transplantation (allo-HCT) in patients transplanted with active ...
journal_title:American journal of hematology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1002/ajh.26000
更新日期:2021-01-01 00:00:00
abstract::Micro-transplantation (MST) by chemotherapy, combined with granulocyte colony-stimulating factor-mobilized peripheral blood stem cell (GPBSC) infusion, from an HLA partial matched related donor has shown some encouraging effective therapy for acute myeloid leukemia (AML). However, the outcome of human leukocyte antige...
journal_title:American journal of hematology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1002/ajh.25780
更新日期:2020-06-01 00:00:00
abstract::Sickle cell disease (SCD) is associated with early mortality. We sought to determine the incidence, cause, and risk factors for death in an adult population of patients with SCD. All patients aged >/=18 years seen at the Adult Sickle Cell Center at Duke University Medical Center between January 2000 and April 2005 wer...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.21569
更新日期:2010-01-01 00:00:00
abstract::It has been suggested that alterations of cell cycle genes probably contribute to the pathogenesis of endemic Burkitt's lymphoma (BL) in addition to c-MYC translocation. Mutations disrupting the normal nuclear localization signal of the retinoblastoma-related gene Rb2/p130 have been documented in BL cell lines and pri...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.20749
更新日期:2007-03-01 00:00:00
abstract::Argatroban is a direct thrombin inhibitor approved for the treatment of heparin-induced thrombocytopenia (HIT) type II. Argatroban is predominantly metabolized in the liver. It is widely believed that no dosage adjustment is required in patients with renal insufficiency, making it a preferred agent in patients on rena...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.21072
更新日期:2008-03-01 00:00:00
abstract::Heparin-induced thrombocytopenia is a rare but severe complication of heparin therapy that can result in severe venous or arterial thromboembolic events and whose treatment remains partially unanswered. Recombinant hirudin is potentially effective as an antithrombotic treatment in the management of heparin-induced thr...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830500105
更新日期:1995-09-01 00:00:00
abstract::We report the clinical, molecular, and immunohistological findings of 20 Chinese patients with mantle cell lymphoma diagnosed over a 10-year period. The disease affected mainly elderly patients (median age, 65.5 years) with a male predominance (M/F, 3/1). Eighty percent presented with advanced stage III/IV disease but...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/(sici)1096-8652(199812)59:4<295::aid-ajh5>
更新日期:1998-12-01 00:00:00
abstract::We have studied 91 patients with SS genotype, 44 children and 47 adults. Excluding the Cameroon and atypical haplotypes, the distribution in the children's sample exhibited 43% Benin, 38% Bantu, and 3% Senegal. In adults, the sample exhibited 46% Benin, 30% Bantu, and 9% Senegal (chi 2: 13.511, 2 df, P = 0.001). When ...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830490212
更新日期:1995-06-01 00:00:00
abstract::Autoimmune hemolytic anemia is thought to be mediated via auto-antibodies produced by lymphoid B cells. This may be an idiopathic process or secondary to an underlying infection or lymphoproliferative disorder. Conventional treatment comprises immunosuppression with corticosteroids and, in some cases, splenectomy. A p...
journal_title:American journal of hematology
pub_type: 杂志文章,评审
doi:10.1002/ajh.20220
更新日期:2005-02-01 00:00:00
abstract::We studied red blood cell morphology in two marathon runners before, immediately after, and 1 day after a marathon race. A discocyte-stomatocyte transformation was found by light microscopy of wet preparations and also by scanning electron microscopy, with about one-half the erythrocytes becoming cup-shaped after the ...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830190213
更新日期:1985-06-01 00:00:00
abstract::Newly identified iron binding proteins isolated from rat duodenal homogenates permit better understanding of iron absorption. Mucins bind iron at acid pH to keep iron soluble and available for absorption at the more alkaline pH of the duodenum; this explains iron deficiency following prolonged achlorhydria. Integrin (...
journal_title:American journal of hematology
pub_type: 杂志文章,评审
doi:10.1002/ajh.2830420114
更新日期:1993-01-01 00:00:00
abstract::The objective of this study is to establish a method to identify patients with primary immune thrombocytopenia (ITP) utilizing administrative data from diverse data sources that would be appropriate for epidemiologic studies of ITP, regardless of patients' age and source of health care. Medical records of the Oklahoma...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.23226
更新日期:2012-09-01 00:00:00
abstract::This report reviews the diagnostic significance of immune markers, their relationship to patient outcome, and the therapeutic uses of monoclonal antibodies (MoAbs) in acute leukemia. Immunophenotyping allows for rapid and reproducible diagnosis in the majority of cases of acute leukemia. It is of particular importance...
journal_title:American journal of hematology
pub_type: 杂志文章,评审
doi:10.1002/ajh.2830500307
更新日期:1995-11-01 00:00:00
abstract::Pulmonary alveolar proteinosis (PAP) is a heterogeneous disease that occasionally develops with hematological malignancy. However, PAP in association with hematopoietic stem cell transplantation is quite rare. Here we present the first report of a patient who developed PAP after cord blood transplantation (CBT). A 45-...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.10107
更新日期:2002-06-01 00:00:00
abstract::Human T-cell leukemia virus (HTLV-I) is known to be associated with certain hematologic malignancies, and a related virus, HTLV-III/LAV, might be the cause of AIDS. Some persons with AIDS have had evidence of HTLV-I infection. Unrelated to these findings, it has been suggested that HTLV-I is transmitted via blood prod...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830200205
更新日期:1985-10-01 00:00:00
abstract::A 50-year-old woman with muscular fatigue and monoclonal gammopathy of unknown significance was shown to have high levels of antibodies against the acetylcholine receptor of the skeletal muscle endplate. The specific antibody activity was exclusively associated with the monoclonal component. There were no objective si...
journal_title:American journal of hematology
pub_type: 杂志文章
doi:10.1002/ajh.2830290112
更新日期:1988-09-01 00:00:00