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  • 1
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Identification of patients with Hodgkin's lymphoma who are primary refractory to chemotherapy will have great impact on treatment planning. Several studies have indicated that up-regulation of the bcl-2 proto-oncogene expression in non-Hodgkin's lymphoma can cause resistance to chemotherapeutic drugs. For this reason we investigated the relationship between expression of bcl-2, the pro-apoptotic protein Bax and MIB-1 with clinical drug-resistance in Hodgkin's lymphomaMethods and results: Seven patients with nodular sclerosis Hodgkin's lymphoma under 40 years of age, who failed to achieve complete remission upon primary chemotherapy and 10 matched patients who did achieve complete response were selected from the Eindhoven Cancer Registry. Tissue sections from both groups of patients were stained for bcl-2, Bax and MIB-1. In the non-responding patients Reed–Sternberg cells expressed bcl-2 more frequently using a cut-off point of 〈 25% to indicate negative cells (P = 0.04), whereas no differences were observed in the expression of Bax and MIB-1. In non-responding patients the lymphocytes surrounding Reed–Sternberg cells expressed bcl-2 less frequently (P = 0.002), using a cut-off point of 〈 25%, whereas no difference was observed in the expression of Bax and MIB-1.Conclusion: A high percentage of Reed–Sternberg cells expressing bcl-2 protein and a low expression of bcl-2 protein in the surrounding lymphocytes is associated with treatment-failure, and subsequent poor survival in young patients with nodular sclerosing Hodgkin's lymphoma. These results need further validation in larger studies.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0584
    Keywords: IL-3 ; Lymphoma ; Interleukin-3 ; Inter-leukin-6
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The objective of this phase-I study was to establish the maximum tolerable dose of recombinant human interleukin-3 (rhIL-3) after salvage chemotherapy in patients with malignant lymphoma. Twenty-one patients with relapsed Hodgkin's disease or intermediate/high-grade non-Hodgkin's lymphoma received rhIL-3 after the second cycle of DHAP chemotherapy (cisplatin, cytosine-arabinoside, dexamethasone). Cycles 1 and 3 were given without rhIL-3. The rhIL-3 was administered as a continuous intravenous infusion for 10 days starting 48 h after chemotherapy in cycle 2. Five different dose levels of rhIL-3 (0.25, 1.0, 2.5, 5.0, and 10.0μg/kg/day) were sequentially tested. At the three lowest dose levels one double-blinded placebo was included for every four patients per dose level. Low-grade fever occurred in 15/21 patients, unrelated to the dose of rhIL-3. Nausea and vomiting (grade 1–2) occurred in seven patients. Headache was dose related, with 3/4 patients at a dose of 10μg/kg/day experiencing troublesome grade-2 headache precluding further dose escalation. Facial flushing developed in 3/8 patients at the highest dose levels of rhIL-3. There was a significant increase in eosinophil count during rhIL-3 (p=0.03 cycle 2 vs cycle 1 andp=0.002 cycle 2 vs cycle 3) without accompanying clinical signs or symptoms. No increase in basophil count was observed. There were no increased plasma levels of interleukin-6 or macrophage colony-stimulating factor (M-CSF) during rhIL-3. We conclude that rhIL-3 can be safely administered as a continuous intravenous infusion for 10 days after DHAP chemotherapy. Dose-limiting side effects, especially headache, occur at a dose of 10μg/kg/day.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0584
    Keywords: Electronmicroscopy ; Fcγ receptor-bearing lymphocytes ; Hodgkin's disease ; Parallel tubular structures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Normal donor peripheral blood mononuclear cells incubated for 24 h with sera from patients with Hodgkin's disease were investigated by electron microscopy for the presence of parallel tubular structures (PTS) and/or amorphous electrondense granules (large granular lymphocytes = LGL). In comparison with normal human serum, 14 out of 29 sera of the patients induced a marked increase in the percentage of LGL. From a limited number of experiments it was likely that this increase is paralleled by an increase in Fcγ receptor-bearing cells after the incubation. This serum effect did not show a correlation with the number of Fcγ receptor-positive lymphocytes in the peripheral blood of the patients. A difference in the induction effect could be demonstrated between the sera from patients with a favourable and those with an unfavourable clinical course, but this distinction was not absolute. The presence of absence of splenic involvement by Hodgkin's disease does not apparently influence the effect of the sera. From experiments using sera positive for immune complexes or anti-Epstein-Barr virus antibodies, it seems unlikely that these factors are responsible for the observed increase in LGL.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-0584
    Keywords: Cryopreserved autologous platelets ; Autologous bone marrow transplantation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Autologous platelets were harvested and cryopreserved in eight consecutive patients elected for ablative chemotherapy and autologous bone marrow transplantation (ABMT) for solid malignancy. There was a 19% loss in platelet count after the freeze thaw and wash procedure; with an in vitro functional loss of 40–60%. No correlation could be found for individual platelet transfusions between in vitro functional tests and in vivo recovery. Six consecutive patients received a total of 16 autologous platelet transfusions in the aplastic phase of ABMT. No bleeding was observed during the study period and there was no CMV infection in the recipients. While improvement in freezing and subsequent handling is desirable, autologous cryopreserved platelets can safely be used for the prophylaxis of bleeding during aplasia in patients treated with ABMT.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1573-739X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Buffered acetylsafícylic acid (Alka Seltzer®,b-asa) and plain aspirin (p-asa) tablets were compared as to their effects on bleeding time and platelet function in eight healthy male volunteers. Two doses (500 and 1000 mg) of each preparation were investigated in a cross-over design, each volunteer being his own control in each dose group (n=4). Both preparations disturbed platelet aggregation to the same extent. Bleeding time increased after both preparations, though significantly more after the buffered preparation than after plain acetylsalicylic acid, irrespective of the dosage. The 1000 mg dose prolonged bleeding time significantly more than the 500 mg dose, irrespective of the preparation. Kinetic analysis showed thatb-asa gave higher peak plasma levels of acetylsalicylic acid (asa) and accordingly salicylic acid peak levels were also higher after the buffered preparation. It is concluded thatb-asa in equi-analgesic doses prolongs bleeding time more than the plain preparation. Since it is less agressive on the gastro-intestinal mucosa, its use may be advantageous in situations where acetylsalicylic acid induced loss of platelet aggregation is desired. However, the risk of prolonged bleeding —e.g. after tooth extractions — is probably higher after the buffered preparation.
    Type of Medium: Electronic Resource
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