Abstract:
BACKGROUND:Usefulness of iron chelation therapy in myelodysplastic patients is still under debate but many authors suggest its possible role in improving survival of low-risk myelodysplastic patients. Several reports have described an unexpected effect of iron chelators, such as an improvement in hemoglobin levels, in patients affected by myelodysplastic syndromes. Furthermore, the novel chelator deferasirox induces a similar improvement more rapidly. Nuclear factor-kappaB is a key regulator of many cellular processes and its impaired activity has been described in different myeloid malignancies including myelodysplastic syndromes. DESIGN AND METHODS:We evaluated deferasirox activity on nuclear factor-kappaB in myelodysplastic syndromes as a possible mechanism involved in hemoglobin improvement during in vivo treatment. Forty peripheral blood samples collected from myelodysplastic syndrome patients were incubated with 50 muM deferasirox for 18h. RESULTS:Nuclear factor-kappaB activity dramatically decreased in samples showing high basal activity as well as in cell lines, whereas no similar behavior was observed with other iron chelators despite a similar reduction in reactive oxygen species levels. Additionally, ferric hydroxyquinoline incubation did not decrease deferasirox activity in K562 cells suggesting the mechanism of action of the drug is independent from cell iron deprivation by chelation. Finally, incubation with both etoposide and deferasirox induced an increase in K562 apoptotic rate. CONCLUSIONS:Nuclear factor-kappaB inhibition by deferasirox is not seen from other chelators and is iron and reactive oxygen species scavenging independent. This could explain the hemoglobin improvement after in vivo treatment, such that our hypothesis needs to be validated in further prospective studies.
journal_name
Haematologicajournal_title
Haematologicaauthors
Messa E,Carturan S,Maffè C,Pautasso M,Bracco E,Roetto A,Messa F,Arruga F,Defilippi I,Rosso V,Zanone C,Rotolo A,Greco E,Pellegrino RM,Alberti D,Saglio G,Cilloni Ddoi
10.3324/haematol.2009.016824subject
Has Abstractpub_date
2010-08-01 00:00:00pages
1308-16issue
8eissn
0390-6078issn
1592-8721pii
haematol.2009.016824journal_volume
95pub_type
杂志文章相关文献
HAEMATOLOGICA文献大全abstract:BACKGROUND AND OBJECTIVES:Rituximab reacts specifically with the CD20 antigen and induces B-cell depletion. This could interfere with the production of autoantibodies in some immune diseases. The objective of this study was to assess the effects of rituximab in autoimmune hemolytic anemia and thrombocytopenia. DESIGN ...
journal_title:Haematologica
pub_type: 临床试验,杂志文章
doi:
更新日期:2002-02-01 00:00:00
abstract::Hematopoietic differentiation is driven by transcription factors, which orchestrate a finely tuned transcriptional network. At bipotential branching points lineage decisions are made, where key transcription factors initiate cell type-specific gene expression programs. These programs are stabilized by the epigenetic a...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2017.174516
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:We have shown previously that both erythrocyte production rate (EPR) and plasma erythropoietin (EPO) levels in response to hypoxia or to compounds able to stimulate EPO secretion are very much higher in post-hypoxic (PH) than in hypertransfused (HT) polycythemic mice with similar levels of hematocrit. Since ...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:1992-11-01 00:00:00
abstract:BACKGROUND:Relapsing primary central nervous system lymphoma carries a poor prognosis when treated with conventional chemotherapy with a one-year overall survival of 25-40%. Encouraging results have been shown with intensive chemotherapy followed by autologous hematopoietic stem cell rescue. We report the results of a ...
journal_title:Haematologica
pub_type: 临床试验,杂志文章
doi:10.3324/haematol.2011.060434
更新日期:2012-11-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:In multiple myeloma (MM), the mechanisms used by plasma cells to invade locally and metastasize are thought to be similar to those developed by solid tumors and include cell proliferation and secretion of extracellular matrix (ECM) degrading enzymes following adhesion to ECM proteins. We studi...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2002-08-01 00:00:00
abstract::The diversity of the human leukocyte antigen (HLA) class I and II alleles can be simplified by consolidating them into fewer supertypes based on functional or predicted structural similarities in epitope-binding grooves of HLA molecules. We studied the impact of matched and mismatched HLA-A (265 versus 429), -B (230 v...
journal_title:Haematologica
pub_type: 杂志文章,多中心研究
doi:10.3324/haematol.2016.143271
更新日期:2016-10-01 00:00:00
abstract::As of 1999, the German registry of immune tolerance treatment in hemophilia has received reports on 146 patients who have undergone this therapy from 25 hemophilia centers. In 16 of the reported patients treatment is ongoing. Therapy has been completed in 126 patients of all groups with hemophilia A; most of them are ...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2000-10-01 00:00:00
abstract::It is well known that thalassemic patients exhibit an increased frequency of thrombotic events. Most individuals with resistance to activated protein C (APCR) are the result of a point mutation replacing Arg 506 with Gln in the factor V aminoacidic sequence (factor V Leiden). Recently APCR has been shown to account fo...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:1997-11-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:There are several therapeutic options for patients with myeiodysplastic syndrome (MDS) but most of them are poorly effective and the potentially curative ones are available only for a minority of individuals. The aim of this article is to define a rational basis for a patient-oriented approach ...
journal_title:Haematologica
pub_type: 杂志文章,评审
doi:
更新日期:1998-10-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:A D-dimer assay can be helpful to rule out thromboembolism provided it is sensitive, reliable, fast and easy to perform. Tests based on the ELISA methodology have a high diagnostic sensitivity, and are therefore adequate for excluding deep venous thrombosis (DVT). The drawbacks are their long a...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2000-05-01 00:00:00
abstract::Previous studies identified the Ser/Thr protein kinase, AKT, as a therapeutic target in thrombo-inflammatory diseases. Here we report that specific inhibition of AKT with ARQ 092, an orally-available AKT inhibitor currently in phase Ib clinical trials as an anti-cancer drug, attenuates the adhesive function of neutrop...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2016.151159
更新日期:2017-02-01 00:00:00
abstract:BACKGROUND:The incidence of primary gastric non-Hodgkin's lymphoma (NHL) appears to have increased worldwide in recent years, and this seems to be confirmed by large-sample population studies. METHODS AND RESULTS:We derived our data from the Lombardy Cancer Registry, which provides the incidence of cancer in the provi...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:1992-09-01 00:00:00
abstract::Transient pancytopenia preceding childhood acute lymphoblastic leukemia (ALL) is an unfrequent but well-known event. The association of this preleukemic syndrome with hepatitis is extremely rare, with only two such cases having been published in the literature. We report the case of a 16-year-old boy who was diagnosed...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:1998-06-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Dendritic cells (DC) pulsed with multiple myeloma (MM) patient-specific idiotype (Id) protein can induce MM-specific T-cell responses. DESIGN AND METHODS:We established serum-free culture conditions to generate monocyte-derived DC for clinical use to circumvent anti-xenogenic immune responses...
journal_title:Haematologica
pub_type: 临床试验,杂志文章
doi:
更新日期:2003-10-01 00:00:00
abstract::Immunoparesis or suppression of polyclonal immunoglobulins is a very common condition in newly diagnosed myeloma patients. However, the recovery of polyclonal immunoglobulins in the setting of immune reconstitution after autologous stem cell transplantation and its effect on outcome has not yet been explored. We condu...
journal_title:Haematologica
pub_type: 杂志文章,多中心研究
doi:10.3324/haematol.2016.158345
更新日期:2017-05-01 00:00:00
abstract::Adoptive transfer of ex vivo expanded CD4(+)CD25(+)FOXP3(+) regulatory T cells is a successful therapy for autoimmune diseases and transplant rejection in experimental models. In man, equivalent manipulations in bone marrow transplant recipients appear safe, but questions regarding the stability of the transferred reg...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2012.074088
更新日期:2013-08-01 00:00:00
abstract::Disease bulk is an important prognostic factor in early stage Hodgkin lymphoma, but its definition is unclear in the computed tomography era. This retrospective analysis investigated the prognostic significance of bulky disease measured in transverse and coronal planes on computed tomography imaging. Early stage Hodgk...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2016.141846
更新日期:2016-10-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:A novel role for shedding of the surface molecule L-selectin has been proposed as an adjunctive phenomenon during cell detachment from marrow stroma or vessel endothelium. We wished to examine whether variations in expression of L-selectin on a lymphoma B cell line were linked to shedding. DES...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:1999-09-01 00:00:00
abstract::Home care (HC) has an increasingly expanding role in the global management of patients affected by hematologic malignancies. Integrated strategies, including causal-targeted and supportive treatments according to hematologic expertise and a holistic approach inspired by the philosophy and practice of palliative medici...
journal_title:Haematologica
pub_type: 杂志文章,评审
doi:
更新日期:2006-11-01 00:00:00
abstract::The detection of iron deficiency anemia is challenged by the paucity of diagnostic tests demonstrating high sensitivity and specificity. Using two biomarkers, zinc-protoporphyrin/heme and hepcidin, we established the diagnostic cut-off values for iron deficiency anemia in preschool children and women. We randomly sele...
journal_title:Haematologica
pub_type: 杂志文章
doi:10.3324/haematol.2018.193243
更新日期:2018-12-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Serum beta(2)-microglobulin (s beta(2)m) is an established prognostic factor for multiple myeloma and non-Hodgkin's lymphoma, but only limited data suggest an adverse prognostic significance for Hodgkin's lymphoma (HL). This study was undertaken to examine the impact of s beta(2)m on the progn...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2002-07-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:The use of intensive therapy supported by autologous stem cell transplantation (ASCT) is being investigated as treatment for poor-prognosis follicular lymphomas (FL). A single-center experience is herein reported. DESIGN AND METHODS:From September 1990 to October 1997, 30 consecutive patients ...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:1999-04-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:We further characterized a novel type of chimeric BCR-ABL mRNA transcript detected in a patient with Philadelphia chromosome positive (Ph+) chronic myeloid leukemia (CML). DESIGN AND METHODS:We used reverse-transcription polymerase chain reaction (RT-PCR) and sequence analysis of the fusion re...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2000-01-01 00:00:00
abstract::Pseudomonas aeruginosa is one leading gram-negative organism associated with nosocomial infections. Bacteremia is life-threatening in the immunocompromised host. Increasing frequency of multi-drug-resistant (MDRPA) strains is concerning. We started a retrospective survey in the pediatric hematology oncology Italian ne...
journal_title:Haematologica
pub_type: 杂志文章,多中心研究
doi:10.3324/haematol.2009.020867
更新日期:2010-09-01 00:00:00
abstract::Epidemiological evidence suggests that infection is involved in the etiology of common acute lymphoblastic leukemia, either by stimulating an inappropriate immune response or in the form of a classical transforming agent. In an attempt to elucidate the role that infection is playing in this disease, we used representa...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2006-02-01 00:00:00
abstract:BACKGROUND:Identification of early megakaryocyte (MK) precursors is difficult and conflicting. The prevalence of leukemias with a megakaryocytic component may be underestimated when conventional techniques are utilized. The recent development of immuno-ultrastructural procedures for simultaneous detection of platelet p...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:1993-03-01 00:00:00
abstract::n patients with Kasabach-Merritt syndrome (KMS), local activation of coagulation commonly results in disseminated intravascular coagulation (DIC). Progress of DIC is associated with 30-40% mortality as a result of uncontrollable hemorrhage. A 39-year-old woman with an enlarging giant liver hemangioma was diagnosed as ...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:2005-11-01 00:00:00
abstract::Juvenile myelomonocytic leukemia (JMML) is a myeloproliferative/myelodysplastic disorder associated with mutations in the Ras-Raf-MEK-ERK-signaling pathway. B-Raf plays a central role in this pathway. In 65 screened JMML patients we identified no BRAF mutations and we conclude that this gene is unlikely to play a role...
journal_title:Haematologica
pub_type: 信件
doi:10.3324/haematol.11493
更新日期:2007-11-01 00:00:00
abstract::In childhood B-cell precursor acute lymphoblastic leukemia, cytogenetics is important in diagnosis and as an indicator of response to therapy, thus playing a key role in risk stratification of patients for treatment. Little is known of the relationship between different cytogenetic subtypes in B-cell precursor acute l...
journal_title:Haematologica
pub_type: 临床试验,杂志文章,多中心研究
doi:10.3324/haematol.2013.085175
更新日期:2013-07-01 00:00:00
abstract::Primary vaginal non-Hodgkin lymphoma is really uncommon and may be misdiagnosed as inflammatory disease or solid cancer, so careful diagnostic procedures are needed, particularly as far as pathological and immunocytochemical evaluation is concerned. Most of these lymphomas present with follicular patterns and limited ...
journal_title:Haematologica
pub_type: 杂志文章
doi:
更新日期:1994-03-01 00:00:00