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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 261 (1978), S. 245-252 
    ISSN: 1432-069X
    Keywords: Hyperpigmentation ; Bleomycin ; Melanosomes ; Hyperpigmentation ; Bleomycin ; Melanosomen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die durch Bleomycin bedingte Pigmentation bei einem männlichen Europäer, der an der Hodgkinschen Erkrankung litt, wurde ultrastrukturell untersucht. Die Melanocyten waren zwar in normaler Zahl vorhanden, doch zeigten verschiedene Abnormalitäten. Das endoplasmatische Reticulum und der Golgi-Apparat waren gut entwickelt, die Mitochondrien vergrößert. Im endoplasmatischen Reticulum wurden Lipideinschlüsse und verschiedene, z. T. lipid-enthaltende autophagocytische Vacuolen beobachtet. Die Aufnahme von Melanosomen in Keratinocyten erschien vermehrt. Die Melanosomen, die einen kleineren Durchmesser als 0,55 μ haben, waren im Cytoplasma verteilt und bildeten keine Komplexe wie bei Stickstoff-Lost. Die verstärkte Melanocytenaktivität und die Störungen des Melanosomentransfers werden diskutiert.
    Notes: Summary Pigmentation in a Causasian male, resulting from bleomycin therapy for Hodgkin's disease, has been studied ultrastructurally. The melanocytes, though present in normal numbers, showed several abnormalities; the endoplasmic reticulum and the Golgi apparatus were well developed and the mitochondria were enlarged. Lipid inclusions in the endoplasmic reticulum and numerous autophagocytic vacuoles, some containing lipids were observed. Transfer of melanosomes to keratinocytes appeared to be increased. The melanosomes, which measured less than 0.55 μ were dispersed in the cytoplasm and did not form complexes, as has been observed with nitrogen mustard. The increase of melanocytic activity and the disturbance of melanosome transfer are discussed.
    Type of Medium: Electronic Resource
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