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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 3 (1974), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Normal human peripheral blood lymphocytes were sensitized to autologous or allogeneic lymphoblastoid cells in vitro. Purified T lymphocytes were found to be able to respond both by performing DNA synthesis and by functioning as killer cells. Surface marker analysis of blast-transformed lymphocytes in the in vitro cultures showed a high proportion (around 50%) of blasts lacking any surface marker attributable to b or T blasts; such ‘null’ blasts have previously not been found in conventional mixed leukocyte culture or after phytohemagglutinin or concanavalin A activation Since the ‘null’ blasts could be shown to be produced in a high percentage from originally almost pure sheep erythrocyte(SRBC) binding lymphocytes and displayed a similar killing capacity per unit cell number is SRBC-binding lymphoblasts, we consider the ‘null’ blast to be of T origin.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 4 (1975), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Cells from one-way human mixed leukocyte cultures (MLC) which had reverted to small lymphocytes after 2 weeks' incubation responded with accelerated kinetics and higher thymidine incorporation on restimulation with lymphocytes or lymphoblastoid cell line (LCI.) cells having relevant antigens. In contrast to fresh lymphocytes, they did not respond to autologous LCL cells. Cultures could be restimulated every second week with relevant allogeneic lymphocytes and could thus be maintained for periods of up to 4 months. Almost all these cultured cells had T-cell characteristics, during stimulation as well as in their reverted phase. The response to phytohemagglutinin (PHA) successively disappeared with repeated allogeneic restimulation. whereas the response to the relevant lymphocytes and cells of related donors was maintained. When lymphocytes had been, stimulated with autologous LCL cells, the restimulation response was accelerated, although lower than after the primary stimulation Restimulated cultures could not be maintained by further restimulation. Allogeneic and autologous LCL were equally efficient restimulators. A low level of stimulation was also achieved with allogeneic lymphocytes. The PHA response was usually reduced.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 4 (1975), S. 0 
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Lymphocytes from normal adults, with or without serological signs of previous Epstein-Barr virus (EBV) infection, could be stimulated to proliferate and produce killer cells by incubation with autologous EBV-genome-positive lymphoid cell lines (LCLs). The stimulated cells were most probably of T-cell origin, although at the peak of stimulation many of them lacked the sheep erythrocyte marker. Direct effector-target cell contact was necessary for lysis to occur The cytotoxicity of autologously stimulated (AS) lymphocytes was not restricted to EBV-genome-positive LCLs, nor to cell lines of hematopoietic origin It was equally broad if cells carrying complement receptor had been removed before stimulation Fresh lymphocytes, blasts induced by phytohemagglutinin or concanavalin A. and Burkitt's lymphoma biopsy cells were resistant or considerably less sensitive Mouse cells-even cell lines-were resistant The sensitivity of target cells to lysis correlated positively with their capacity to block AS lymphocyte lysis of autologous LCLs in competition experiments The cytotoxicity of AS lymphocytes was blocked by EBV-genome-positive and-negative cell lines, whereas the EBV-related cytotoxicity of T cells from acute cases of infectious mononucleosis was blocked by EBV-genome-positive LCL only.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1569-8041
    Keywords: chemotherapy ; CHOP ; etoposide ; high-grade non-Hodgkin's lymphoma ; risk factors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Second- and third-generation chemotherapy protocols for the treatment of aggressive non-Hodgkin's lymphomas (NHL) have considerable, and age-related, toxic effects. In addition, they do not seem to prolong overall survival in comparison to standard CHOP chemotherapy. In this phase II study we investigated the feasibility and efficacy of the addition of etoposide to the conventional CHOP regimen. Patients and methods: Toxicity and clinical efficacy were determined in 132 patients with previously untreated high-grade NHL. There were 51 patients in clinical stage I and II and 81 patients in stage III and IV, with a median age of 54 years (range 17–85). Patients received standard-dose CHOP plus etoposide 100 mg/m2 i.v. on day 1 and 200 mg/m2 p.o. on days 2–3. Results: The overall response rate was 84%, with 70% complete and 14% partial responses. The predicted three- and five-year survivals for the group as a whole were 60% and 53%, respectively, and the corresponding disease-free survivals for patients achieving complete remissions were 65% and 56%, respectively. Outcome was not different from that of CHOP-treated patients in a recently completed Nordic study performed during the same time period. Myelosuppression (WHO grade 3–4), observed in 87% of patients and infectious complications (WHO grade 3–4) in 33%, dominated the toxicity profile of this regimen. Fifty-seven of 92 complete responders (62%) received 6–8 CHOP-E cycles with no reductions in planned dose intensity. LDH level higher than normal, extranodal sites = 2, stage III–IV at diagnosis were all indicators of a poor survival. Conclusions: We conclude that CHOP-E treatment is effective in high-grade NHL. However, mainly due to severe myelosuppression frequent schedule modifications were required and the results are not obviously superior to those of conventional CHOP.
    Type of Medium: Electronic Resource
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