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  • Articles: DFG German National Licenses  (4)
  • Dystrophin  (2)
  • Graft-versus-host disease  (2)
  • 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
    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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  • 3
    ISSN: 1432-1459
    Keywords: Dystrophin ; Intragenic duplication ; Becker muscular dystrophy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We describe a family with a large duplication of exons 2–16 of the dystrophin gene. It was characterized by immunocytochemistry, field-inversion gel electrophoresis and quantitative Southern blots. Our observations are of clinical interest in that they demonstrate an intermediate disease course despite a disrupted reading frame of dystrophin as postulated from exon-intron boundaries. We discuss possible mechanisms which may explain the unusual phenotype in our patient.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Gliedergürteldystrophie ; Dystrophin ; Sarkoglykan ; Adhalin ; Emery-Dreifuss-Dystrophie ; Emerin ; Merosin ; Calpain-3 ; Muskeldystrophie Duchenne ; Muskeldystrophie Becker ; Key words Limb-girdle dystrophy ; Dystrophin ; Sarcoglycan ; Adhalin ; Emery-Dreifuss muscular dystrophy ; Emerin ; Merosin ; Calpain-3 ; Becker muscular dystrophy ; Duchenne muscular dystrophy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Recent progress in the field of molecular genetics revealed a broader spectrum of dystrophin-related disorders than previously assumed. In addition, the pathogenetic basis of other types of muscular dystrophies could be identified: some autosomal-recessive limb girdle dystrophies are caused by mutations of sarcoglycan genes, others are caused by deficiency of the sarcoplasmatic enzyme calpain-3. Emery-Dreifuss muscular dystrophy is due to the deficiency of the nuclear membrane protein emerin. About 50% of congenital muscular dystrophies are related to mutations of a extracellular matrix protein merosin (α-laminin). A series of monoclonal antibodies for immunohistochemistry is now available recognizing many cytoskeletal muscle proteins. In combination with molecular genetics a diagnostic flow chart can be developed which allows a definite diagnosis in most cases. In this review disease entities are illustrated by case reports. We discuss the significance of immunohistochemical and molecular methods for diagnosis.
    Notes: Zusammenfassung Neue Ergebnisse der molekularen Genetik haben in den vergangenen Jahren zu der Einsicht geführt, daß das klinische Spektrum der Erkrankungen, die auf Defekte des Muskelmembranproteins Dystrophin zurückgeführt werden können, erheblich breiter ist, als bisher angenommen wurde. Außerdem konnten die molekularen Ursachen anderer Unterformen der progressiven Muskeldystrophien identifiziert werden: ein Teil der autosomal-rezessiv vererbten Muskeldystrophien vom Gliedergürteltyp beruht auf Mutationen der Sarkoglykangene, andere auf Defekten der sarkoplasmatischen Protease Calpain-3; als Ursache der Emery-Dreifuss-Muskeldystrophie konnte ein Membran-Protein der Kernhülle identifiziert werden; etwa die Hälfte der kongenitalen Muskeldystrophien beruht auf Störungen des Merosins (=α2-Laminin), einer Komponente der extrazellulären Matrix. Es steht heute ein Repertoire an spezifischen Antikörpern gegen fast alle der o.g. Muskelproteine für die Immunhistologie zur Verfügung. Zusammen mit den Methoden der molekularen Genetik kann somit ein differenziertes diagnostisches Schema entwickelt werden, das in vielen Fällen zu einer definitiven Diagnose führt. Anhand eigener Fallberichte werden diese Krankheitsentitäten referiert und auf die differentialdiagnostische Bedeutung einer erweiterten immunhistochemischen und molekularen Diagnostik eingegangen.
    Type of Medium: Electronic Resource
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