Abstract:
:Hematopoietic progenitor cells from different sources have been widely characterized, but their ultrastructural morphology has never been described in detail. In this study, imunomagnetically separated CD34+ cells from normal bone marrow (BM), mobilized peripheral blood (PBSC) and human umbilical cord blood (CB) were studied by transmission electron microscopy (TEM) using a cytochemical method which reveals endogenous myelo-peroxidase (MPO) activity. This technique is particularly suited for detecting early signs of the myeloid commitment. The CD34+ cells from PBSC were morphologically very homogeneous and 94.7+/-4.5% of these cells were MPO-: these ultrastructural features are generally considered typical of immature cells. The CD34+ BM cells were instead more heterogeneous, with 24.6+/-7.4% showing intense MPO activity. The ultrastructural characteristics of CB cells fell between those observed in PBSC and BM, but there was a high percentage of morphologically immature cells with no evidence of MPO activity (about 83%). The number of apoptotic cells within samples from different sources was also examined both by TEM and flow cytometry. The percentage of apoptotic cells was 0.7% in PBSC, 2.3% in BM, 2.9% in CB from vaginal delivery and 11.6% in CB from cesarean section. These observations confirm the relative phenotypic immaturity of CB in comparison with BM cells; they also suggest that CB collected after cesarean section may be associated with reduced stem cells viability.
journal_name
Leuk Lymphomajournal_title
Leukemia & lymphomaauthors
Deliliers GL,Caneva L,Fumiatti R,Servida F,Rebulla P,Lecchi L,De Harven E,Soligo Ddoi
10.3109/10428190109099332keywords:
subject
Has Abstractpub_date
2001-08-01 00:00:00pages
699-708issue
4eissn
1042-8194issn
1029-2403journal_volume
42pub_type
杂志文章abstract::Bullous pyoderma gangrenosum begins as a bulla, nodule or nonulcerated erythematous plaque that blisters or ulcerates to form a superficial ulcer surrounded by a hemorrhagic, bullous border, which is surrounded by a blue-gray halo. Bullous pyoderma gangrenosum is most commonly associated with hematologic malignancies,...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.1080/10428190500254299
更新日期:2006-01-01 00:00:00
abstract::Primary central nervous system (PCNS) lymphoma is a relatively rare disease. The Epstein-Barr virus (EBV) has often been implicated in the development of lymphomas. Few cytogenetic. studies on PCNS lymphomas have been reported. We describe here an unusual case of PCNS B cell lymphoma, centroblastic polymorphic type wi...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428199609093453
更新日期:1996-05-01 00:00:00
abstract::MDSCs, which are defined as a kind of negatively regulatory cells, could suppress T cell immune response in many tumor-bearing animal models and cancer patients. We supposed that MDSCs also contributed to the impaired antitumor immunity in MDS. Here we demonstrated that STAT3-ARG1 pathway could be a critical signal tr...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.1080/10428194.2020.1817431
更新日期:2021-01-01 00:00:00
abstract::Castleman's disease is a rare condition characterized by benign hyperplastic lymph nodes. Based on the morphological features, it has been divided into hyaline-vascular, plasma cell and intermediate types. The latter two types are frequently associated with a wide variety of clinical pictures such as fever, anemia wit...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428199009069289
更新日期:1990-01-01 00:00:00
abstract::The human germinal center-associated lymphoma (HGAL) gene has prognostic value in diffuse large B-cell lymphoma, and expression of its cognate protein is germinal center-specific. A previous study had suggested that HGAL protein expression might also be related to the outcome in patients with Hodgkin lymphoma (HL). Th...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428190903242628
更新日期:2009-11-01 00:00:00
abstract::Thalidomide represents a recent and innovative therapeutic approach in multiple myeloma. Main toxicity usually consists in somnolence, constipation, peripheral neuropathy and deep vein thrombosis, but, unlike alkylating agents, thalidomide is reported to rarely induce severe hematologic toxicity. The majority of patie...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.1080/10428190500237450
更新日期:2005-12-01 00:00:00
abstract::Intra-vascular lymphoma is usually reported as a rare and fatal disorder. We describe here the first case of an intra-vascular lymphoma revealed by a nephrotic syndrome for which a durable remission has been obtained by 8 cycles of bi-mensual CHOP and Rituximab therapy. In this report, 18 fluorodesoxyglucose tomoscint...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.1080/10428190410001683822
更新日期:2004-08-01 00:00:00
abstract::Vaginal bleeding during aplasia can induce transfusion support, infection and discomfort. Oral and intramuscular hormonotherapy can be toxic and/or difficult to manage (mucositis). This single-center pilot study evaluated the efficacy and safety of leuprorelin (L) in preventing heavy vaginal bleeding in 20 nonmenopaus...
journal_title:Leukemia & lymphoma
pub_type: 临床试验,杂志文章
doi:10.3109/10428190109097723
更新日期:2001-09-01 00:00:00
abstract::Population level survival of patients with myelodysplastic syndromes (MDS) treated with hypomethylating agents (HMA) is inferior to clinical trials. Using SEER-Medicare data, we identified 2086 MDS patients diagnosed in 2004-13, aged ≥66 years at diagnosis, and receiving ≥1 HMA cycle after 2005. We used multivariate l...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.1080/10428194.2019.1663423
更新日期:2020-02-01 00:00:00
abstract::There are limited data regarding the role of (18)F-fluorodeoxyglucose positron emission tomography with computed tomography (FDG PET-CT) scanning in primary mediastinal B-cell lymphoma (PMBL). We analyzed 28 patients with PMBL treated with chemotherapy, of whom 25 (89%) also received rituximab and 17 (61%) radiotherap...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428194.2014.910656
更新日期:2015-01-01 00:00:00
abstract::Follicular lymphoma (FL) is characterized by an initial response to treatment with inevitable relapse. We evaluated chemoimmunotherapy resistance (CIR resistance) including transformation. We identified patients who received rituximab combination therapy for symptomatic FL. CIR resistance was defined as disease progre...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428194.2014.885513
更新日期:2014-11-01 00:00:00
abstract::The objective of this work was to determine the safety and efficacy of gemtuzumab ozogamicin in patients with poor prognosis acute myeloid leukemia (AML). Patients with the following diagnoses/characteristics were treated with 1-3 infusions of gemtuzumab ozogamicin at a dose of 9 mg/m2: (1) relapse of AML < or = 6 mon...
journal_title:Leukemia & lymphoma
pub_type: 临床试验,杂志文章
doi:10.1080/1042819021000016078
更新日期:2002-10-01 00:00:00
abstract::Involvement of the gastrointestinal (GI) tract by multiple myeloma (MM) is extremely rare. The small intestine and stomach are the most frequent sites of spread. We report 1 case of a 61-year-old woman who presented with clinical and radiographic features of an acute large bowel pseudo-obstruction. An abdominal comput...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.1080/10428190410001697322
更新日期:2004-09-01 00:00:00
abstract::Parathyroid hormone-related protein (PTHrP) and macrophage inflammatory protein-1α (MIP-1α) have been implicated in the pathogenesis of adult T-cell leukemia/lymphoma, but their effects on T-cells have not been well studied. Here we analyzed the functions of PTHrP and MIP-1α on T-cell growth and death both in vitro an...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428194.2011.626883
更新日期:2012-04-01 00:00:00
abstract::We report a case of double isochromosome 8q as a single cytogenetic abnormality in a patient with acute myelo-monocytic leukemia. Similarly to rare cases with tetrasomy 8, the patient showed monocytic involvement and was refractory to cytotoxic chemotherapy. We conclude that this kind of cytogenetic aberration is prob...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428199509107909
更新日期:1995-10-01 00:00:00
abstract::The prognostic significance of O6-methylguanine DNA methyltransferase (MGMT) inactivation was evaluated in patients with diffuse large B-cell lymphoma (DLBCL) who received cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) in addition to rituximab. In this retrospective study, we used the methylation-sp...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428190903312462
更新日期:2009-12-01 00:00:00
abstract::We investigated the possibility of immunotherapy for multiple myeloma (MM) using myeloma-specific cytotoxic T lymphocytes (CTLs) that were stimulated in vitro by dendritic cells (DCs) pulsing with purified and optimized myeloma lysates. CD14(+) cells were cultured in the presence of GM-CSF and IL-4. On day 6, the imma...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.1080/10428190701583975
更新日期:2007-10-01 00:00:00
abstract::Hairy cell leukemia (HCL), a rare haematological disorder of B-cell origin, mainly presents with bone marrow infiltration, haematopoietic insufficiency, and splenomegaly. In some cases, osteolytic lesions can be observed. Many of these clinical features, especially haematopoietic insufficiency and osteolytic lesions a...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
doi:10.3109/10428199509056850
更新日期:1995-05-01 00:00:00
abstract::The natural history of the chronic phase (CP) of chronic myeloid leukemia (CML) and the high response rates achieved with BCR-ABL inhibitor therapy necessitate long-term evaluation of survival-based outcome measures. Prior to the availability of long-term BCR-ABL inhibitor data, short-term surrogate end points predict...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
doi:10.3109/10428194.2013.772607
更新日期:2013-10-01 00:00:00
abstract::We aimed to identify whether the use of autologous hematopoietic cell transplantation (HCT) impacts outcomes for multiple myeloma patients with gains of chromosome 1q (+1q). We retrospectively identified 95 patients, 21% having +1q. For patients with +1q, the overall response rate to induction was 85%, with 40% having...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.1080/10428194.2016.1260126
更新日期:2017-08-01 00:00:00
abstract::Tumor-infiltrating immune cells perform a crucial function in host immune reactions against diffuse large B-cell lymphoma (DLBCL). In this study, we have identified a subset of tumor-infiltrating FOXP3-positive regulatory T cells (Tregs) in the initial DLBCL biopsy specimens, and have evaluated their prognostic signif...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.1080/10428190701824536
更新日期:2008-02-01 00:00:00
abstract::To assess parameters of therapeutic response and survival after the onset of the blastic phase (BP) in 47 patients with Philadelphia chromosome (Ph)-positive chronic myeloid leukemia (CML), a number of clinical hematologic, and cytogenetic data at the BP were evaluated. Among the eleven parameters examined, only the c...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428199109068124
更新日期:1991-01-01 00:00:00
abstract::Although treatment of Hodgkin's disease has been extensively studied in the past, fewer clinical studies are being reported, despite the fact that the optimal therapy for each stage has not yet been established. The pathologic subtypes have not been officially changed for years, although lymphocyte-predominant disease...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
doi:10.3109/10428199609067580
更新日期:1996-03-01 00:00:00
abstract::Multiple myeloma is a malignant condition that most commonly occurs in the seventh decade of life. Recent improvements in treatment may result in a more favourable outlook for recently diagnosed patients. Multiple myeloma is an incurable clonal B-cell malignancy, which is initially responsive to conventional chemother...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
doi:10.1080/10428190802475311
更新日期:2008-12-01 00:00:00
abstract::We investigated the effect of rGM-CSF on the proliferation/differentiation balance of the leukemic cells maintained in liquid cultures during 7 days, from 16 patients with acute myelogenous leukemia (AML). Cell proliferation was measured by tritiated thymidine (3HT) incorporation, and by the plating efficiency (PE) ob...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428199309054735
更新日期:1993-09-01 00:00:00
abstract::Two important syndromes of hemophagocytic lymphohistiocytosis (HLH) have to be considered in infants and young children with recurrent fever, organomegaly and cytopenias. Familial hemophagocytic lymphohistiocytosis (FHLH) is a genetically heterogeneous autosomal recessive disease with histiocytic and lymphocytic infil...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
doi:10.3109/10428190109057957
更新日期:2001-03-01 00:00:00
abstract::According to standard-protocols, real time quantitative RT-PCR (RQ-PCR) for quantification of BCR-ABL fusion transcripts in CML patients is performed with the construction of a standard curve for each run, each sample is analyzed at least in duplicate and 10-40 ml peripheral blood are processed. This approach is appro...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.1080/10428190310001625845
更新日期:2004-06-01 00:00:00
abstract::Male gender was recently reported as an adverse prognostic factor in patients with diffuse large B-cell lymphoma (DLBCL) treated with R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine and prednisone). We conducted a retrospective study of adult patients with DLBCL initially treated with rituximab containin...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428194.2012.691482
更新日期:2013-01-01 00:00:00
abstract::This phase-I/phase-II study evaluated panobinostat in combination with ifosfamide, carboplatin, etoposide (P-ICE) in relapsed/refractory classical Hodgkin lymphoma. During phase I, panobinostat was given daily on Monday/Wednesday/Friday starting one week prior to Cycle 1 (C1) of ICE and during two weeks of C1-2 of ICE...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,随机对照试验
doi:10.1080/10428194.2017.1359741
更新日期:2018-04-01 00:00:00
abstract::In the rituximab era, several large studies have suggested that full-dose rituximab plus cyclophosphamide, doxorubicin, vincristine and prednisone (R-CHOP) might be the best treatment for patients with diffuse large B-cell lymphoma (DLBCL) aged 60 years and older. However, it remains unclear whether this is also the c...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428194.2011.600486
更新日期:2012-01-01 00:00:00