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    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 283 (1991), S. 465-471 
    ISSN: 1432-069X
    Keywords: Psoriasis ; Keratin expression ; Hyperproliferation ; Köbner effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Keratin expression in lesional, marginal and uninvolved psoriatic epidermis was analysed by one- and two-dimensional gel electrophoresis and immunoblotting. Keratins K1, K5, K6, K10, K14, and K16 were identified in lesional epidermis. Keratins K6 and K16 were found in all epidermis probes of uninvolved skin, but never occurred in normal epidermis of control skin samples. By means of laser-densitometric evaluation of one-dimensional gels a downregulation of K1 and K10 and an upregulation of K6 and K16 was found in psoriatic epidermis. Unexpectedly, the level of K5 was considerably lower and the level of K14 considerably higher in lesional skin than in normal epidermis. These results demonstrate that not only basal keratinocytes in lesional epidermis but also suprabasal keratinocytes in uninvolved psoriatic epidermis express an altered differentiation pattern. The latter phenomenon could be very important in understanding the development of the so-called “Köbner effect” in psoriatic epidermis.
    Type of Medium: Electronic Resource
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