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  • Digitale Medien  (3)
  • Bone marrow transplantation  (2)
  • Analytical Chemistry and Spectroscopy  (1)
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  • Digitale Medien  (3)
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  • 1
    Digitale Medien
    Digitale Medien
    Interleukin-6 (IL-6) levels in febrile children during maximal aplasia after bone marrow transplantation (BMT) are similar to those in children with normal hematopoiesis (1995)
    Springer
    Annals of hematology 70 (1995), S. 309-312 
    Details
    ISSN: 1432-0584
    Schlagwort(e): Interleukin-6 ; Aplasia ; Bone marrow transplantation ; Hematopiesis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Interleukin-6 (IL-6) has been shown to be an inducer of the acute-phase response (APR) and to be involved in the pathogenesis of several disease states, including graft-versus-host disease (GvHD) following allogeneic bone marrow transplantation (BMT). As blood cells of the monocyte lineage are known to be major producers of this cytokine, we wondered whether extreme peripheral leukopenia following total ablation of hematopoiesis could compromise IL-6 production during the first days after allogeneic or autologous BMT. In the absence of detectable circulating leukocytes we measured elevated IL-6 levels in six children having fever (≥38° C) of presumed infectious origin with an average of 74±60 units/ml (range 19–309 units/ml). IL-6 levels in febrile children having a normal hematopoiesis (118±254 units/ml, range 17–1213 units/ml) were not significantly higher than those found in the febrile BMT group (p〉0.05). Moreover, there was a clear association between elevated IL-6 levels and the presence of fever. C-reactive protein (CRP) was also elevated (≥1 mg/dl), whereas tumor-necrosis factor alpha (TNF) was undetectable (〈1 pg/ml). Two transplanted patients without fever during the period of total aplasia had neither detectable CRP nor IL-6, thus demonstrating that the transplant procedure itself does not induce an APR. Our data obtained during maximal leukopenia following BMT show that a functional hematopoietic system is not necessary for regular production of IL-6, which is associated with fever. Cells of nonhematopoietic origin may contribute to this production.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01696617
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Interleukin-6 (IL-6) levels in febrile children during maximal aplasia after bone marrow transplantation (BMT) are similar to those in children with normal hematopoiesis (1995)
    Springer
    Annals of hematology 70 (1995), S. 309-312 
    Details
    ISSN: 1432-0584
    Schlagwort(e): Key words Interleukin-6 ; Aplasia ; Bone marrow transplantation ; Hematopiesis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract  Interleukin-6 (IL-6) has been shown to be an inducer of the acute-phase response (APR) and to be involved in the pathogenesis of several disease states, including graft-versus-host disease (GvHD) following allogeneic bone marrow transplantation (BMT). As blood cells of the monocyte lineage are known to be major producers of this cytokine, we wondered whether extreme peripheral leukopenia following total ablation of hematopoiesis could compromise IL-6 production during the first days after allogeneic or autologous BMT. In the absence of detectable circulating leukocytes we measured elevated IL-6 levels in six children having fever (≥38°  C) of presumed infectious origin with an average of 74±60 units/ml (range 19–309 units/ml). IL-6 levels in febrile children having a normal hematopoiesis (118±254 units/ml, range 17–1213 units/ml) were not significantly higher than those found in the febrile BMT group (p〉0.05). Moreover, there was a clear association between elevated IL-6 levels and the presence of fever. C-reactive protein (CRP) was also elevated (≥1 mg/dl), whereas tumor-necrosis factor alpha (TNF) was undetectable (〈1 pg/ml). Two transplanted patients without fever during the period of total aplasia had neither detectable CRP nor IL-6, thus demonstrating that the transplant procedure itself does not induce an APR. Our data obtained during maximal leukopenia following BMT show that a functional hematopoietic system is not necessary for regular production of IL-6, which is associated with fever. Cells of nonhematopoietic origin may contribute to this production.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01696617
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Determination of chemical-shift tensor orientations in methylene groups by separated-local-field NMR (1993)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 31 (1993), S. 352-356 
    Details
    ISSN: 0749-1581
    Schlagwort(e): Separated-local-field NMR ; Chemical-shift tensor orientations ; Poly(ethylene oxide) ; Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The 13C chemical-shift tensor orientations in the OCH2CH2O moieties of poly(ethylene oxide) (PEO) and poly(ethylene terephthalate) (PET) were determined by means of 1H—13C separated-local-field NMR spectroscopy, and the literature values for the shift tensors in polyethylene (PE) and polyoxymethylene (POM) were improved. An angular resolution of ± 4° was attained on standard equipment with 90° pulse lengths exceeding 4 μs. Relatively high uniformity of the methylene tensor orientations, complying with local molecular symmetry, was found.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/mrc.1260310408
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