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Treatment of nonlymphoblastic transformation of chronic granulocytic leukaemia (CGL) by marrow ablative chemotherapy, followed by autologous stem cell reinfusion, induced a 2nd chronic phase with a median duration of 5.5 months at the cost of high morbidity and mortality. One course of intensive cytoreductive chemotherapy, similar to a remission induction course in acute nonlymphoblastic leukaemia (ANLL), followed by a buffy coat reinfusion, induced a short-lived 2nd chronic phase in 4 out of 9 patients. Two successive courses, each followed by an autologous stem cell reinfusion, induced a new chronic phase in 4 out of 5 consecutive patients. Multiple intensive chemotherapy courses, followed by autologous stem cell rescue, offer an effective palliative treatment of nonlymphoblastic transformation of CGL with a relatively low morbidity due to the treatment itself. 相似文献
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X‐linked sideroblastic anemia due to ALAS2 intron 1 enhancer element GATA‐binding site mutations 下载免费PDF全文
Marion Sweeney Anoop K. Sendamarai Paul J. Schmidt Matthew M. Heeney Helger G. Yntema Caroline Kannengiesser Bernard Grandchamp Charlotte M. Niemeyer Nine V.A.M. Knoers Sonia Swart Gordon Marron Richard van Wijk Reinier A. Raymakers Alison May Mark D. Fleming 《American journal of hematology》2014,89(3):315-319
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Wanten GJ Geijtenbeek TB Raymakers RA van Kooyk Y Roos D Jansen JB Naber AH 《JPEN. Journal of parenteral and enteral nutrition》2000,24(4):228-233
BACKGROUND: To test the hypothesis that lipid emulsions with different triglyceride structures have distinct immunomodulatory properties, we analyzed human neutrophil adhesion and degranulation after lipid incubation. METHODS: Neutrophils, isolated from the blood of 10 healthy volunteers, were incubated in medium or physiologic (2.5 mmol/L) emulsions containing long-chain (LCT), medium-chain (MCT), mixed LCT/MCT, or structured (SL) triglycerides. Expression of adhesion molecules and degranulation markers was evaluated by flow cytometry. Also, functional adhesion was investigated by means of a flow cytometric assay using fluorescent beads coated with the integrin ligand intercellular adhesion molecule (ICAM)-1. RESULTS: Although LCT and SL had no effect, LCT/MCT significantly increased expression of the beta2 integrins lymphocyte-function-associated antigen 1 (+18%), macrophage antigen 1 (+387%), p150,95 (+82%), and (alphaDbeta2 (+230%). Degranulation marker expression for azurophilic (CD63, +210%) and specific granules (CD66b, +370%) also significantly increased, whereas L-selectin (CD62L, -70%) decreased. The effects of LCT/MCT were mimicked by the MCT emulsion. ICAM-1 adhesion (% beads bound) was increased by LCT/MCT (34% +/- 4%), whereas LCT (19% +/-3%) and SL (20% +/- 2%) had no effect compared with medium (17% +/- 3%). CONCLUSIONS: LCT/MCT and MCT, contrary to LCT and SL emulsions, increased neutrophil beta2 integrin expression, adhesion, and degranulation. Apart from other emulsion constituents, triglyceride chain length might therefore be a key feature in the interaction of lipid emulsions and the phagocyte immune system. 相似文献
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M E Smeets R A Raymakers G Vierwinden A H Pennings J Boezeman H Minderman T M de Witte 《Leukemia》1999,13(9):1390-1398
Currently available data regarding the substrate specificity of the multi-drug resistance (MDR) mechanisms P-glycoprotein (Pgp) and MDR-associated protein (MRP1) for idarubicin are inconclusive. A multiparameter flow cytometry method was developed which allows simultaneous quantitative measurement of total cellular fluorescence and the amount of anthracyclines intercalated into the DNA. Anthracycline DNA intercalation was measured by fluorescence resonance energy transfer (FRET) between Hoechst 33342 and anthracyclines. Daunorubicin and idarubicin accumulation were studied and compared in established cell lines expressing Pgp and MRP1. The data demonstrate that daunorubicin DNA intercalation is affected by both Pgp and MRP1 whereas idarubicin DNA intercalation is affected only by MRP1. MRP1 and Pgp function could be blocked completely by 5 microM PAK 104P, while higher concentrations of verapamil, PSC 833 and cyclosporin A were necessary to attain complete blocking of MRP1 compared to Pgp. Daunorubicin DNA intercalation correlates better with cell survival and is more sensitive at physiological MDR expression as observed in hematopoietic progenitors than daunorubicin levels measured by total cellular fluorescence. In conclusion, idarubicin DNA intercalation is reduced by MRP1 but not by Pgp. PAK-104P is an effective modulator for both Pgp and MRP1 and may further improve idarubicin efficacy. 相似文献
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J J Body M Paesmans J P Sculier G Dabouis G Bureau P Libert M C Berchier N Raymakers J Klastersky 《Clinical chemistry》1992,38(5):748-751
Neuron-specific enolase (NSE) is the most sensitive and specific tumor marker for small-cell lung cancer (SCLC). We evaluated a new monoclonal IRMA (Sangtec) for NSE and compared it with a polyclonal RIA (Pharmacia) in patients with SCLC or other lung cancers (NSCLC). We measured NSE concentrations in 100 healthy subjects (NI group), 100 patients with benign pulmonary diseases (BPD group), and 194 patients with advanced lung cancer (97 SCLC and 97 NSCLC). Intra- and interassay CVs were less than 7% for both assays, and dose-dilution curves paralleled their respective standard curves. Values measured by both assays were highly correlated in all groups. NSE concentrations were significantly (P less than 0.001) lower by IRMA than by RIA in NI and BPD groups. The upper 95th percentile values for NSE in the NI group were 11.7 micrograms/L in the RIA and 9.2 micrograms/L in the IRMA. In NSCLC, the values were significantly (P less than 0.05) lower by IRMA but the percentage of subjects with increased values was higher (vs the NI group, 31% for RIA and 44% for IRMA, P less than 0.005). Diagnostic sensitivity for SCLC was improved with IRMA: 83% of values with RIA and 93% with IRMA were increased above the NI group values (P less than 0.005); the corresponding values for SCLC vs BPD were 81% and 89% (P less than 0.05). NSE values measured in 39 patients with SCLC after chemotherapy were more often increased and were significantly higher with the IRMA than with the RIA (P less than 0.005). 相似文献
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Levenga H Levison-Keating S Schattenberg AV Dolstra H Schaap N Raymakers RA 《Bone marrow transplantation》2007,40(4):355-359
The purpose of this study was to determine the role of pre-emptive donor lymphocyte infusion (pDLI) after partial T-cell-depleted allogeneic SCT in patients with multiple myeloma (MM). A cohort of 24 MM patients was treated with partial T-cell-depleted myeloablative SCT between December 1997 and April 2002. These patients were intended to receive pDLI after SCT. The overall response rate after SCT was 83% (20 of 24 patients) with 10 patients (42%) in complete remission (CR). Transplant-related mortality within 1 year after SCT was 29%. Thirteen patients (54%) received pDLI and four patients in partial remission reached CR. GVHD>grade I after pDLI developed in 4 out of 13 patients (30%). Four patients received therapeutic DLI, without preceding pDLI. Eleven patients (46%) are alive, with a median follow-up of 67 months (range, 48-100 months). Seven of these patients (29%) are in continuous CR (CCR), which was confirmed by a negative patient-specific IgH PCR in four patients. All seven patients in CCR received pDLI. Although myeloablative SCT in MM induces high toxicity, we show that the concept of T-cell depletion followed by pDLI is promising and needs to be investigated in a reduced-intensity conditioning setting. 相似文献