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  • Histiocytosis X  (2)
  • Key words Immunosuppressive macrolides  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 277 (1985), S. 496-498 
    ISSN: 1432-069X
    Keywords: Histiocytosis X ; C3b Receptor ; C3d Receptor ; C3bi Receptor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-069X
    Keywords: Histiocytosis X ; Plasminogen activator ; dendritic cells ; Langerhans cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Plasminogen activators (PA) play an important role in cell migration and tissue degradation. Considering the strong epidermotropism of atypical mononuclear cells in histiocytosis X (HX) skin infiltrates leading to intraepidermal abscess formation, it was the purpose of this study to look for tissue-type PA (t-PA) and/or urokinase-type PA (u-PA) on HX cells. Four monoclonal antibodies against PA were used, employing the alkaline phosphatase anti-alkaline phosphatase (APAAP) technique on cryostat sections from four patients with HX. Twenty percent to 40% of infiltrating cells in the epidermis expressed the t-PA antigen. t-PA+ cells were present in the follicular centers of human tonsil, absent in normal epidermis and scanty in cutaneous infiltrates from mycosis fungoides and lupus erythematosus. Double labeling with anti-PA and T6 (CD1) or S100 protein revealed some of the HX cells to express both antigens (t-PA+ CD1+ or t-PA+ S100+). We conclude that cutaneous infiltrates of HX contain PA+ dendritic cells which are different from normal Langerhans cells and which may be responsible for the strong epidermal alterations in HX.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Der Hautarzt 51 (2000), S. 646-654 
    ISSN: 1432-1173
    Keywords: Schlüsselwörter Immunsuppressive Makrolide ; Tacrolimus ; Cyclosporin A ; Neurodermitis ; Immunophiline ; Key words Immunosuppressive macrolides ; Tacrolismus ; Cyclosporine A ; Atopic dermatitis ; Immunophilin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract The immunosuppressive macrolides are a novel class of antiinflammatory substances, which could supplant glucocorticosteroids for the topical treatment of some chronic inflammatory skin diseases. Cyclosporine A (CyA), well known from transplantation medicine for years, is licensed in Germany for oral treatment of psoriasis and atopic dermatitis but is not suitable for topical therapy. Tacrolimus (FK506) penetrates the inflamed epidermis and is regarded as the key immunosuppressive macrolide. Clinical trials have demonstrated the efficacy of FK506 ointment for atopic dermatitis, many case reports have been published regarding other inflammatory skin diseases. The ascomycin derivative ASM 981 has many of the properties of FK506 but less data is available at present. Sirolimus (Rapamycin) is structurally related to FK506 but has other biological effects since its molecular actions involve different biochemical pathways. A review of the biochemical and cellular properties, mode of action, therapeutic efficacy and unwanted side effects, as well as data from clinical trials and status of licensing, is given for the respective drugs.
    Notes: Zusammenfassung Die Substanzklasse der neuen, topisch anwendbaren immunsuppressiv wirksamen Makrolide zeichnet sich wegen ihrer entzündungshemmenden Eigenschaften als mögliche Alternative zu Glukokortikosteroiden in der äußeren Behandlung chronisch-entzündlicher Hauterkrankungen ab. Das aus der Transplantationsmedizin lange bekannte Cyclosporin A (CyA) ist zur oralen Behandlung schwerer Psoriasis- und Ekzemformen bereits zugelassen, jedoch zur äußerlichen Anwendung ungeeignet. Tacrolimus (FK506) penetriert die entzündlich veränderte Epidermis und gilt als Leitsubstanz immunsuppressiv wirksamer Makrolide. Mehrere Studien belegen die gute Wirksamkeit äußerlicher FK506-Anwendung beim atopischen Ekzem, für zahlreiche weitere entzündliche Hauterkrankungen liegen Fallberichte vor. Das Ascomycin-Derivat ASM 981 weist dem FK506 ähnliche Eigenschaften auf, ist allerdings noch nicht so gut untersucht. Sirolimus (Rapamycin) ist dem FK506 zwar strukturell und biochemisch ähnlich, greift aber biologisch in unterschiedliche Stoffwechselwege der Zelle ein. Der Artikel gibt eine Übersicht zu biochemischen und zellbiologischen Eigenschaften, Wirkmechanismen, Pharmakokinetik, Wirkungs- und Nebenwirkungsspektrum sowie zu den bisherigen Resultaten klinischer Studien und den derzeitigen Indikationen dieser Substanzen.
    Type of Medium: Electronic Resource
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