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  • Bone marrow transplantation  (4)
  • Analytical Chemistry and Spectroscopy  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 64 (1992), S. A140 
    ISSN: 1432-0584
    Keywords: Cytomegalovirus infection ; Bone marrow transplantation ; Graft-versus-host disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary HCMV infection diagnosed by the highly sensitive polymerase chain reaction (PCR) technology in blood, urine and skin biopsies of patients after bone marrow transplantation (BMT) correlated with the reconstitution of peripheral blood lymphocytes and dermal immunohistological alterations to evaluate the interaction of viral infection with the recovery of the immune system, as well as with the induction or aggravation of graftversus-host disease (GVHD). In a prospective study 73% of 63 patients showed viremia at a median time of 25 days after BMT. Only 44% of these cases that also presented with a higher frequency of acute GVHD symptoms developed HCMB disease later on. In the skin, similar immunohistological alternations, as well as frequent primary local HCMV infection before the development of cutaneous signs of GVHD, was found, suggesting the direct involvement of anti-HCMV immune responses in the induction of GVHD-associated organ lesions.
    Type of Medium: Electronic Resource
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  • 2
    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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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 62 (1984), S. 675-688 
    ISSN: 1432-1440
    Keywords: Immunohistology ; Skin alterations ; Graft-versus-host disease ; Bone marrow transplantation ; Langerhans cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Skin biopsies of 26 patients with leukemia and seven patients with aplastic anemia were investigated before and at different stages after allogeneic bone marrow transplantation (BMT) to establish the immunological criteria which distinguish skin alterations during normal reconstitution from dermal lesions mediated by graft-versushost disease (GvHD). Of the 33 patients studied 27 presented with clinically diagnosed acute and/or chronic GvHD, one patient died of bone marrow rejection. Immunohistological analysis of the respective skin biopsies with selected monoclonal antibodies against human leukocyte antigens (HLA) and differentiation antigens of the lympho-hematopoietic cells revealed low dermal mononuclear cell counts with phenotypically normal constituents in five cases with uncomplicated reconstitution post-grafting. In contrast, increased dermal cellular infiltrates predominantly consisting of Lyt 3+, OKT 8+ T-lymphocytes, as well as of a large number of Ia-like (immune response associated = HLA-D) determinant+ monocytes/macrophages were observed in all patients with active acute/chronic GvH reactivity. As sign of activation simultaneous expression of HLA-D region products was also found on a subset of the invading OKT 8+ T-lymphocytes. Progression of GvHD was associated with additional surface staining of keratinocytes for Ia-like determinants. Loss of Ia-like determinant+, OKT 6+ dentritic epithelial cells in all leukemic patients, as well as in patients with aplastic anemia with or without GvHD suggested damage of Langerhans cells due to the previous radiotherapy and/or specific immunological destruction. In patients with fatal outcome of GvHD prolonged reduction of these dentritic epithelial cells seemed to be indicative of impaired immune reconstitution or bone marrow dysfunction. Thus immunopathological features of skin GvHR may enable early recognition and prognostic evaluation of this disease possibly allowing more effective therapy.
    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
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 30 (1992), S. 466-475 
    ISSN: 0749-1581
    Keywords: Heteronuclear NOE ; Selective pulses ; Shaped pulses ; Sequential excitation ; Improved data accumulation ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An improved 1D pulse sequence for detecting heteronuclear NOEs on a qualitative level is described and demonstrated. It makes use of shaped selective pulses and takes advantage of sequential perturbation of several proton resonances during one experiment and correspondingly more efficient data accumulation schemes. The method is particularly suitable for assigning quaternary carbons and for establishing connectivities between assigned molecular fragments bound to these quaternary centres.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 28 (1990), S. 205-211 
    ISSN: 0749-1581
    Keywords: Tetramethyllimonene ; Assignments ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Dynamic effects of tetramethyllimonene were studied at low temperatures. Nuclear Overhauser effects measured under optimized conditions at 223 K and the results of 2D correlation experiments allowed the identification of two conformers and the assignment of all the proton and carbon resonances. For the determination of exchange and relaxation rates the method of saturation transfer was applied. At temperatures below 223 K further dynamic effects were recognized. Structural information obtained experimentally was compared with the results of Allinger force field calculations.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 29 (1991), S. 834-847 
    ISSN: 0749-1581
    Keywords: Cembrenenol ; Cyclic diterpene ; Conformational analysis ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The solution structure of the cyclic diterpene cembrenenol was investigated. A strategy for conformational analysis is proposed which is based on computational methods and experiments to determine the structure-relevant NMR parameters. Computed and experimentally determined steady-state NOEs were compared in a first step, which served to sort out a few probable conformers. The detailed analysis of homo- and hetero-nuclear coupling information together with NOE data defining local geometries allowed, in a second step, the selection of the most probable conformation. The structure corresponds to the lowest energy structure proposed by computational methods alone. Its ring structure is in excellent agreement with the x-ray ring structure of the closely related cembrenene.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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