Abstract:
:Analysis of different ribonucleotide reductase inhibitors to modulate arabinosylcytosine (ara-C) metabolism suggested that pretreatment with arabinosyl-2-fluoroadenine (F-ara-A) significantly potentiated the rate of ara-CTP (5'-triphosphate of ara-C) accumulation in both quiescent lymphocytes (p = 0.046) and in cycling blasts (p = 0.017). In vitro incubations of freshly isolated leukemia cells from patients with chronic (n = 7) or acute (n = 5) leukemias with F-ara-A, increased the rate of ara-CTP accumulation by a median of 1.5 or 1.7-fold, respectively, when subsequently incubated with ara-C. The objective of the present investigation was to test the hypothesis that ara-C can be biochemically modulated during therapy of leukemias. To test the biochemical modulation of ara-C in the clinical setting, we designed two protocols to administer fludarabine (clinical formulation of F-ara-A) and ara-C in a pharmacologically directed sequence for patients with chronic lymphocytic leukemia (CLL) refractory to conventional fludarabine therapy or for patients with acute myelogenous leukemia (AML) in relapse. Comparison of ara-CTP pharmacokinetics demonstrated a significant increase in the area under concentration curve (AUC) of ara-CTP both in CLL (median 1.5-fold) and AML cells (median 1.8-fold) after fludarabine infusion. Analyses of different processes involved in the metabolism of ara-CTP indicated that the increase in AUC was due to potentiation of the rate of ara-CTP accumulation. These studies demonstrate that protocols designed on biochemical and pharmacological rationales modulate ara-C metabolism during therapies.
journal_name
Leuk Lymphomajournal_title
Leukemia & lymphomaauthors
Gandhi V,Estey E,Keating MJ,Plunkett Wdoi
10.3109/10428199309149122subject
Has Abstractpub_date
1993-01-01 00:00:00pages
109-14eissn
1042-8194issn
1029-2403journal_volume
10 Supplpub_type
杂志文章,评审abstract::To define the initial characteristics and prognostic factors of patients with conjunctival low-grade malignant lymphoma, all patients treated for low-grade lymphoma with initial conjunctival involvement were reviewed. Forty-nine cases were selected, including 45 cases with exclusive ophthalmologic conjunctival involve...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.1080/10428190500518966
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abstract::The de novo megakaryocytic leukemia fulfilling the FAB criteria is still an uncommonly recognized variant of acute leukemia. Many studies have shown that the megakaryocytic leukemic events may occur at a pluripotent stem cell level and clinical observations reveal that the megakaryocytic leukemias are diverse entities...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
doi:10.3109/10428199209051011
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abstract::Apoptosis, the caspase-mediated cell death, plays an important role in the etiology, pathogenesis and therapy of a variety of diseases. Abnormalities of apoptosis regulation, resulting in either its inhibition or enhancement, play a key role in the development of various malignant hematological disorders. Several rout...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
doi:10.1080/1042819031000077007
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abstract::Thalidomide and its analogue lenalidomide are potent anti-inflammatory, anti-angiogenic and immunomodulatory drugs, successfully used for the treatment of hematological cancers, in particular multiple myeloma (MM). Both drugs reveal a dual mechanism of action: they target tumour cells by direct cytotoxicity and, indir...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
doi:10.1080/10428190802005191
更新日期:2008-07-01 00:00:00
abstract::Splenectomy specimens from 8 cases of chronic lymphocytic leukaemia (CLL) were examined. The infiltrate in the red pulp consisted predominantly of small lymphocytes. In contrast the predominant cells in the white pulp were pro-lymphocytes and para-immunoblasts. The Ki67 marker, which identifies cells in growth phase, ...
journal_title:Leukemia & lymphoma
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abstract::The outcome of conventional therapy in adult acute lymphoblastic leukaemia (ALL) is disappointing. Allogeneic bone-marrow transplantation may give improved results but has only limited applicability because of the lack of a suitable donor in most patients. We have therefore investigated intensive chemotherapy and chem...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428199009042474
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abstract::Early and targeted antimicrobial therapy improves outcomes in patients with febrile neutropenia (FN). We evaluated the impact of fluorine-18 fluorodeoxyglucose positron emission tomography (FDG-PET) on antimicrobial utilization in the management of FN. A cohort of patients with FN and hematological malignancy was iden...
journal_title:Leukemia & lymphoma
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doi:10.3109/10428194.2012.677533
更新日期:2012-10-01 00:00:00
abstract::Human mantle cell lymphoma (MCL) cell lines are scarce and have been only sporadically described and validated, and only a few have been thoroughly molecularly or genetically characterized. We describe here the successful establishment of a new MCL line, PF-1, with typical MCL characteristics. Culturing primary MCL ce...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428194.2014.901511
更新日期:2015-01-01 00:00:00
abstract::B chronic lymphocytic leukemia (B-CLL) and hairy cell leukemia (HCL) cells are refractory to many of the signals which activate normal B cells but are stimulated to proliferate by tumor necrosis factor (TNF). Cell signalling by TNF is mediated in part by the induction of the transcription factor families AP-1 and NF-k...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
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journal_title:Leukemia & lymphoma
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更新日期:2005-02-01 00:00:00
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journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428199609052436
更新日期:1996-02-01 00:00:00
abstract::Twenty-nine patients with non-Hodgkin's lymphoma received a single subcutaneous injection of 6 mg pegfilgrastim approximately 24 h after the start of CHOP chemotherapy. The safety of pegfilgrastim in this patient population was determined by reports of adverse events. The pharmacokinetics of pegfilgrastim were charact...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,多中心研究
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abstract::Eighteen patients (pts) with myelodysplastic syndrome (MDS) were treated with thymopentin (TP) (50 mg subcutaneously for 5 days) and recombinant interferon alpha 2a (rIFN alpha 2a) (3 MU/m2 subcutaneously on the sixth day); the courses were delivered every week. Moreover those pts with > or = 10% blasts in the bone ma...
journal_title:Leukemia & lymphoma
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doi:10.3109/10428199509049773
更新日期:1995-01-01 00:00:00
abstract::This study evaluated whether measures of psychological well-being, including coping style, are associated with advance care planning (ACP). Data were from the Hematology Communications Study (HEMA-COMM), a prospective observational study of physician-patient communication in patients with hematologic malignancies. ACP...
journal_title:Leukemia & lymphoma
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abstract::High dose cytosine arabinoside (HDARAC) was administered to eleven patients in the blastic phase of Philadelphia (Ph) chromosome positive chronic myelogenous leukemia (CML). Four patients presented in blastic phase and in seven patients blastic transformation had evolved from a previous chronic phase. All patients had...
journal_title:Leukemia & lymphoma
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doi:10.3109/10428199109068053
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journal_title:Leukemia & lymphoma
pub_type: 临床试验,杂志文章,多中心研究
doi:10.3109/10428199909145712
更新日期:1999-09-01 00:00:00
abstract::Bone marrow mesenchymal stromal cells (MSCs) can rescue acute lymphoblastic leukemia (ALL) cells from L-asparaginase by replenishing the depleted asparagine. As both vincristine (VCR) and imatinib mesylate (IM) can inhibit MSCs' proliferation, we hypothesized that these drugs might reduce the niche support of MSCs to ...
journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
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更新日期:1993-01-01 00:00:00
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journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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abstract::The percentage of blasts in the bone marrow aspirates at day 7 or 14 of induction therapy in pediatric ALL patients is an indicator of rapid early response and an independent prognostic factor for long term outcome. Discrepancies between the percentages of blasts in bone marrow aspirates compared to biopsies have been...
journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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abstract::Multiple myeloma (MM) is an essentially incurable malignancy associated with profound immune dysregulation. Despite the advent of novel therapies and improvements in survival over the last 10 years, death from progressive disease and infection remains a common outcome. Natural killer (NK) cells are CD56(+)CD3(-) large...
journal_title:Leukemia & lymphoma
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abstract::Chronic lymphocytic leukemia (CLL) is a neoplastic disorder of mature B lymphocytes. While traditionally treated with combinations of chemoimmunotherapy, the therapeutic options for CLL have expanded in recent years with the emergence of novel oral agents, such as the Bruton tyrosine kinase inhibitor ibrutinib, that a...
journal_title:Leukemia & lymphoma
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