Search results for "rabin"
showing 10 items of 184 documents
l-Arabinose Conformers Adsorption on Ruthenium Surfaces: A DFT Study
2012
Adsorption of 5 L-arabinose tautomers – one acyclic and four cyclic (α and β, pyranose and furanose) species – on a ruthenium surface was studied as a precursor-process of the, nowadays more and more, industrially important sugar catalytic hydrogenation on metal surfaces in water medium. The study was mostly referred to a 37-atom metal catalyst fragment, even though border-effects on the adsorption processes were also checked employing a 61-atom metal fragment. In order to figure out conformational effects on the title process the tautomer flexibility was, at first, investigated by the genetic-algorithm based code Balloon, considering the conformational spaces of the different aquo tautomer…
Estudio farmacogenético de los polimorfismos de transporte y metabolismo relacionados con el tratamiento de la leucemia mieloblástica aguda
2020
En la leucemia mieloide aguda (LMA) ha sido tratada durante décadas con combinaciones de citarabina y antraciclinas, con tasas de remisión completa (RC) del 60-80%. Desgraciadamente, un 70% de los pacientes recae, y además, parte de ellos muere por toxicidad grave o presenta resistencia inicial al tratamiento. La variabilidad individual en LMA que conduce a distinta efectividad y toxicidad en pacientes con el mismo esquema de inducción no se deben sólo a alteraciones citogenéticas y moleculares, sino que puede estar influida por la variabilidad genética. En este estudio se han analizado 49 polimorfismos de nucleótido único (SNPs) en 33 genes implicados en las vías metabólicas de citarabina …
Molecular Remission Can Be Attained in Relapsed or Refractory Chronic Lymphocytic Leukemia (CLL) and Follicular Lymphomas after Reduced Intensity Con…
2004
Abstract RIC followed by allo-SCT is an effective salvage treatment for some relapsed hematologic malignancies due to the postulated graft versus tumour (GVT) effect. In order to evaluate the quality of the clinical response, we have investigated the molecular status of patients receiving allo-SCT for relapsed disease. Forty-four patients (19 chronic lymphocytic leukemias (CLL), 21 follicular lymphomas (FCL) and 4 small lymphocytic lymphomas (SLL)) were enrolled in a prospective phase II study. The median age was 54 years (range: 32–69 years). The median number of previous chemotherapy regimens was 2 (range: 1–5) and 23% of patients had already failed an auto-SCT. Before transplant 34% of p…
Combination Treatment with Imatinib and Mitoxantrone/Etoposide Is a Suitable Preparative Regimen before Allogeneic Transplantation in Patients with M…
2005
Abstract In advanced BCR-ABL-positive leukemia, combination of chemotherapy with imatinib is expected to result in better reduction of leukemia cell load and may delay or offset clonal selection of resistant leukemia cells, thus improving the survival. We carried out a prospective phase I/II combination trial for patients (pts) with myeloid blast crisis of chronic myelogenous leukemia (CML). Pts were treated with imatinib+mitoxantrone/etoposide in four cohorts starting from mitoxantrone 10mg/m2/d and etoposide 100 mg/m2/d for 2 or 3 consecutive days and start of imatinib 600mg/d from day 15 (coh. 1 and 2) or from day 1 (coh. 3 and 4, respectively). After hematologic reconstitution following…
A single high dose of idarubicin combined with high-dose ARA-C for treatment of first relapse in childhood ‘high-risk’ acute lymphoblastic leukaemia:…
2002
The outcome of children with acute lymphoblastic leukaemia (ALL) and early relapse remains unsatisfactory. In January 1995, the AIEOP (Associazione Italiana di Oncologia ed Ematologia Pediatrica) group opened a trial for children with ALL in first isolated or combined bone marrow relapse defined at high risk according to the length of first remission and the immunophenotype. The treatment plan included the combination of a single high-dose idarubicin and high-dose cytarabine as induction therapy followed by an intensive consolidation and stem cell transplant (SCT). In total, 100 children from 16 Italian centres were enrolled; 80 out of the 99 evaluable patients (81%) achieved second complet…
Granulocyte–Macrophage Colony-Stimulating Factor in the Therapy of Adults with De Novo Acute Myeloblastic Leukemia: An Update of a Double-Blind Rando…
1997
We investigated whether granulocytemacrophage colony-stimulating factor (GMCSF) given concomitantly with chemotherapy (CT) improves the outcome of adults with de novo acute myeloblastic leukemia (AML) by increasing the efficacy of CT and reducing infections. CT included cytarabine (ara-C) daunorubicin, and etoposide (DAV) for induction and early consolidation therapy and one cycle with high-dose (patients aged ≤50 years) or intermediate-dose ara-C (patients aged >50 years) /daunorubicin for late consolidation therapy. Eighty patients were randomized after DAV 1 to receive either GM-CSF (Escherichia coli, 250 µg/m2 per day, s.c.) or placebo starting 48 h prior to DAV II and the subsequent co…
Amsacrine with high-dose cytarabine is highly effective therapy for refractory and relapsed acute lymphoblastic leukemia in adults
1988
Abstract Thirty-six patients with relapsed acute lymphoblastic leukemia (ALL) and four with primary refractory ALL were treated with a regimen that included amsacrine, 200 mg/m2, intravenously daily for three days with cytarabine, 3 gm/m2, by infusion over three hours daily for five days. There were 27 remissions in the 36 relapsed patients and two in the four patients with primary refractory disease. Seventeen of the 23 patients with common ALL, four of the six with T-cell ALL, one of the three with B-cell ALL, and seven of eight whose cells were not characterized responded. Toxicity of this regimen was comparable to other reinduction regimens for ALL, but the side effects characteristic o…
Immunochemotherapy with Fludarabine (F), Cyclophosphamide (C), and Rituximab (R) (FCR) Versus Fludarabine and Cyclophosphamide (FC) Improves Response…
2008
Abstract Introduction: Previous phase II studies have suggested that a combination of FCR may increase the outcome of both untreated and relapsed CLL pts. In order to validate this concept the German CLL study group (GCLLSG) initiated a multicentre, multinational phase III trial, CLL8, to evaluate the efficacy and tolerability of FCR versus FC for the first-line treatment of pts with advanced CLL. Methods and Patients: 817 pts with good physical fitness as defined by a cumulative illness rating scale (CIRS) score (Extermann et al., JCO 1998) of up to 6 and a creatinine clearance (cr cl) □d 70 ml/min were enrolled between July 2003 and March 2006. Pts were randomly assigned to receive 6 cour…
First-Line Treatment with Fludarabine (F), Cyclophosphamide (C), and Rituximab (R) (FCR) Improves Overall Survival (OS) in Previously Untreated Patie…
2009
Abstract Abstract 535 Introduction: In 2008, first results of a multicenter, international randomized phase III trial (CLL8) were presented, showing superiority of FCR chemoimmunotherapy for response rates and progression-free survival (PFS) when compared to FC chemotherapy. We now report updated results with a longer median observation time of 37.7 months (mo). Methods and Patients: 817 treatment-naïve patients (pts) with good physical fitness and CD20-positive CLL randomly (1:1) received treatment with 6 courses of either FCR or FC therapy. Both treatment arms were well balanced with regard to sex, age, stage, genomic aberrations and IGVH gene status. The median age was 61 years (range 3…
Y-90 Ibritumomab Tiuxetan as Consolidation Following Three Cycles of Fludarabine-Cyclophosphamide-Rituximab Chemoimmunotherapy in Patients with Relap…
2007
Abstract BACKGROUND: Tumed sequential treatment with fludarabine/cyclophosphamide/rituximab (FC-R) followed by Y-90 ibritumomab tiuxetan (IT) radioimmunotherapy may improve progression-free survival in patients (pts) with CD20+ NHL. However, even unpretreated pts submitted to four to six cycles of a fludarabine-containing combination and then IT at an Y-90 activity of 15 MBq/kg will experience severe prolonged, transfusion-dependent and only partially reversible pancytopenia, thus limiting its use in a non-curative setting (Jurczak et al., ASH 2005). AIM: We report on a trial including anthracycline-pretreated pts with relapsing CD20+ lymphoma > age 50 and unsuitable for myeloablative tr…