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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 56 (1999), S. 5-21 
    ISSN: 1420-9071
    Keywords: Key words. Autoimmune disease; multiple sclerosis; experimental allergic encephalomyelitis; antigen-specific T cells; autoantigen; self-tolerance; immunity; immunotherapy.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. Although the pathogenesis of autoimmune diseases remains poorly understood, the current view is that autoaggresive antigen-specific T cells play a central role in the cascade of events leading to most autoimmune diseases. A major event in the development of autoimmune diseases is the activation of antigen-specific T cells—how, when and where does this activation take place? This review addresses questions concerning the occurrence of unique autoantigens triggering autoimmune diseases, the factors influencing the balance between self-tolerance and autoaggresive immunity, and the mechanisms by which dendritic cells mediate immunity and tolerance to antigen-specific T cells. Knowledge of how antigen-specific T cells are activated is now being used to develop therapeutic approaches to control autoimmune diseases. We discuss tolerance to antigen-specific T cells and tolerance induction as treatment of T-cell-mediated autoimmune diseases. Therapeutic modalities have been established which selectively target the pathogenic T cells, leaving the remainder of the immune system intact.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1440
    Keywords: Acute leukemia ; Reverse isolation ; Remission rates ; Survival ; Age differences
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 202 patients with acute leukemia (156 myeloid-AML, 46 lymphatic and undifferentiated-ALL/AUL) were studied retrospectively for the efficiency of different treatment schedules. Other variables we analysed were the influence of infection prevention with reverse isolation in laminar air flow units and of the age as a prognostic factor. 34% of all AML-patients achieved complete remission. Therapy with Adriamycin, Cytosine-Arabinoside and Vincristine resulted in 25 complete remissions in 51 patients (49%). The median duration of remission was 8 months and the median survival 19 months. The remission rate was improved by treatment with Cytosine-Arabinoside, 6-Thioguanine and Daunomycin (11 of 17 patients). Remission rate was significantly higher in patients up to 30 years of age than in patients older than 50 years (p〈0.008). Survival and remission duration were not different in respect to the age. Reverse isolation with total enteral and topical decontamination resulted in a higher remission rate (p=0.06 not significant) in AML-patients, compared with the control-group. Survival lasted longer with infection prevention. In ALL/AUL-patients the rate of complete remissions was 16 of 34 patients (47%), with a median survival of 17 months. Patients up to the age of 30 had a higher remission rate than those older than 50 years (p=0.017). Patients with ALL/AUL younger than 31 years had a median duration of remission of 16 months and a survival probability of 0.66 after 43 months.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1440
    Keywords: Lung diseases ; Bone marrow transplantation ; Clinic ; Radiology ; Histology ; Immunology ; Lung function
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The case histories of 72 subsequently treated patients — 44 with acute leukemia, 10 with chronic myeloid leukemia, 16 with severe aplastic anemia and 2 with neuroblastoma — were analyzed after bone marrow transplantation (BMT) with respect to pulmonary diseases. Thirty-eight patients suffered from a total of 51 pulmonary complications, which led to death in 20. Of 13 patients, 3 died of bacterial pneumonia, all of them during granulocytopenia; 2 of 6 patients died of fungal pneumonia and 2 out of 3 of a mixed bacterialmycotic infection. Adult respiratory distress syndrome (ARDS) led to death in 2 patients. A granulocyte count under 500/µl correlated significantly (P〈0.002) with the fatal outcome of bacterial, fungal and ARDS pneumonia as well as with bronchitis. Viral pneumonia led to death in 8 of 9 patients; in each there was a significant correlation (P〈0.05) with graft-versus-host disease (GvHD). Patients with repeated episodes of pulmonary illness had significantly more chronic GvHD (P〈0.05); several of these patients displayed a reduction in helper T cells and an increase in suppressor T cells in the peripheral blood. The natural killer (NK) cells were reduced and the percentage of activated NK cell level lay between 6% and 69%. B-cells were absent or deficient. These findings explain in part the absence of specific antibody reactivity. Five of these patients also contracted GvHD-associated obstructive bronchiolitis, which did not respond to therapy. Pulmonary infiltrates of unknown origin (including idiopathic interstitial pneumonia) occurred in 8 of the patients (11.1%), with a fatal outcome in 3 patients. Significant changes (P〈0.05) in lung function after BMT appeared in the form of reduced vital capacity (VC) increased residual volume (RV) and an increase in RV expressed as the percentage of total lung capacity. Pulmonary diseases were the most common complication and cause of death in our patients after BMT.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1440
    Keywords: Bone marrow transplantation ; Acute leukemia ; Recurrent leukemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Twenty-one patients with acute leukemia in second to fifth remission were treated with bone marrow transplantation: 19 patients with transplants from HLA-matched siblings and two with transplants from identical twins. Twelve patients survived from 15 to 1,625 days after transplantation: six of 11 in the ALL group and six of 10 in the AML group. Recurrence of leukemia after marrow transplantation occurred in five patients. The cause of death in five patients was infection, in two patients combined with graft-versushost disease. Long-term disease-free survival can probably be achieved in 30%–35% of all patients with acute leukemia who receive a marrow transplant in second or subsequent remission.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1440
    Keywords: Bone marrow transplantation ; Anti-CMV hypergammaglobulin ; Azyklovir ; Conditioning
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Bone marrow transplantation was performed between IV/82 and X/85 in 64 patients with acute leukemia (n=36), chronic myelogenous leukemia (CML;n=13), severe aplastic anemia (n=12), and neuroblastoma stage IV (n=3). Of these patients 57 received allogeneic marrow from HLA-ABCDR identical, MLC-negative sibling donors. Six transplants were performed with syngenic marrow and one with autologous marrow. Of the 64 patients 48 survived 40-1,250 days after transplantation, resulting in a survival rate (SR) of 75% and a survival probability (SP) of 71%. Of the 36 patients suffering from acute leukemia (SR=64%, SP=51%), patients with acute myelogenous leukemia (AML) in first complete remission (n=11; SR=81%, SP=76%), as well as patients with acute lymphatic leukemia (ALL) in 1st to 4th complete remission at the time of transplantation (n=14; SR=81%, SP=76%) show a favorable prognosis. A poor survival rate was seen for patients with AML when transplanted in second or partial remission (1/5; SR=20%), as well as for patients suffering from ALL and transplanted during relapse or partial remission (1/6; SR=16%). Of 13 patients suffering from CML 12 survived the transplantation free of relapse (SR=93%, SP=92%), and one patient died from varicella zoster pneumonia. Of the transplanted patients with severe aplastic anemia, 12 of 13 are surviving with complete hematologic reconstitution; one patient, however, died on day 10 from a sepsis. In our patient group, the SR as well as the SP has been improved through changes in the irradiation protocol concomitant with prophylactic application of anti-CMV hypergammaglobulin, as well as through additional oral medication of Azyklovir. The 41 patients (BMT No. 7–47) with total body irradiation at one time-show an SR of 44% and an SP of 41%. The following 46 patients (BMT No. 48–93) have reached an SR of 83% and an SP of 74% under the regimen of fractionated total body irradiation, plus prophylaxis with anti-CMV hypergammaglobulin and Azyklovir. Within this group, no fatal CMV pneumonia was encountered as opposed to six patients lost from CMV pneumonia in the first group.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 64 (1986), S. 423-432 
    ISSN: 1432-1440
    Keywords: Bone marrow transplantation ; Folic acid deficiency ; Graft versus host disease ; Megaloblastic marrow ; Hematopoetic recovery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary After bone marrow transplantation (BMT), megaloblastic bone marrow changes are often observed that can only be partially explained by drug effects. Our goal was to find out whether folic acid deficiency represented an additional factor. The serum folic acid concentrations of 41 patients were determined regularly before and after BMT. A 2nd degree polynomial regression analysis revealed a clear and acute drop in folic acid concentrations within 7–9 days after BMT. In 19 patients the level fell below 3.0 ng/ml, the range of folic acid deficiency. The mean folic acid values without oral administration of folic acid after BMT lay significantly below the mean values with substitution (P〈0.001). If a case of acute graft versus host disease (GvHD) was more severe than grade I, the mean folic acid levels were significantly lower (P〈0.01). Patients with megaloblastic bone marrow changes after BMT had significantly lower folic acid values than those without such changes (P〈0.01). The 18 patients with folic acid deficiency had a significantly higher rate of megaloblasts, binucleate erythropoietic precursors, Howell-Jolly bodies, giant myelocytes, and giant metamyelocytes in bone marrow smears than the remaining 23 patients (P〈0.05). Folic acid deficiency did not slow down the increase in leukocytes, granulocytes, thrombocytes, or reticulocytes after BMT. There were 8.2%–9.7% hypersegmented neutrophils in the blood (normal 5%) after BMT both with and without folic acid deficiency. Folic acid deficiency after BMT was caused by insufficient intake combined with simultaneous decreased intestinal resorption and increased requirements for the regeneration of bone marrow and intestinal mucosa.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1440
    Keywords: Bone marrow transplantation ; Acute leukemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Between October 1979 and March 1982, bone marrow transplantations were performed by the Tübingen Group for BMT on 19 patients with acute leukemia in remission and on one patient with chronic myelocytic leukemia in chronic phase. The conditioning regimen consisted of 2×60 mg cyclophosphamide/kg and 10 Gy whole-body irradiation with the linear accelerator. The lung dose was limited by shielding to 8 Gy. In 15 patients, the bone marrow cell suspension of the donor was preincubated with antihuman T-cell globulin (AHTCG) for prophylaxis of graft-versus-host disease (GVHD). All patients showed prompt engraftment of donor cells with good hemopoietic function and complete chimerism. Under reverse isolation in sterile units, no severe bacterial or fungal infections were seen in the phase of bone marrow aplasia. Twelve in twenty patients survived between 25 and 900 days. A severe GVHD was seen only in two patients — one after preincubation with AHTCG. One patient died from relapse of his leukemia, another patient had a testicular relapse which was treated with local radiotherapy. Major problems were seen with chronic GVHD (six patients) and infectious complications, most importantly interstitial pneumonia, in the late post-transplant period.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 10 (1983), S. 0 
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: Gm allotypes were detected and quantitated by radioimmunoassay (RIA) in paired serum and CSF samples from patients suffering from various neurological diseases. Of 115 patients with neurological disorders (65 MS and 50 others), seven subjects displayed one or two allotypes in their CSF which were absent in serum. The Gm phenotype in the patient's serum allowed us to infer the genotype without the need of familial data. A comparison of the regression curves obtained in RIA from the unexpected allotype in CSF and the counterpart in a normal serum pool argued for an identity of the Gm antigen carried by both inhibitory molecules. The unexpected allotype(s) in CSF can be considered as the product of a latent Gm gene which may be activated by either immune perturbations due to the disease per se or some particular immune regulations in the central nervous system.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Clinica Chimica Acta 46 (1973), S. 383-389 
    ISSN: 0009-8981
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Nuclear Physics, Section A 134 (1969), S. 180-198 
    ISSN: 0375-9474
    Keywords: Nuclear reactions
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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