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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 271 (1981), S. 83-90 
    ISSN: 1432-069X
    Keywords: Keratin polypeptides ; Warts ; Papilloma viruses ; Keratinpolypeptide ; Warzen ; Papillomaviren
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Polypeptidzusammensetzung des Kerations bei verschiedenen Warzen wurde mit Hilfe der SDS-Plyacrylamid-Gel-Elektrophorese untersucht. Es stellten sich fünf besondere Polypeptide dar, die denen entsprachen, die in der normalen Epidermis gefunden wurden. (Mol.-Gewicht 67K bis 55K). Daneben wurden zusätzliche Polypeptide (72K) öfter aufgefunden. Die Verteilung der Polypeptide wurde als Prozentsatz des totalen Keratins der verschiedenen Ansätze dargestellt. Der charakteristischste Befund war die deutliche Abnahme des 67K Polypeptids im Warzenkeratin. Es zeigten sich erhöhte Mengen des 65K bis 63K-Eiweißes und gewisse Unterschiede in der Verteilung der Proteine bei den verschiedenen Warzentypen. Daraus darf geschlossen werden, daß die virale Infektion vornehmlich solche Proteine verändert, die in den Endstadien an der Differenzierung der Keratinocyten beteiligt sind.
    Notes: Summary The keratin polypeptide composition of different types of warts was studied by means of SDS polyacrylamide gel electrophoresis. It was composed of five main polypeptides, similar to those found in normal epidermis (mol. wt. 67K to 55K) and an additional polypeptide (72K) was often detected. The distribution of each polypeptide was expressed as percentage of total keratins in the different samples. The most characteristic feature observed in warts was the marked decrease of the 67K polypeptide. There were increased amounts of the 65K–63K proteins and some difference was observed in the distribution of these proteins in the different types of warts. Thus, the viral infection seems mainly to modify the proteins which are only involved in the latest stages of the differentiation of keratinocytes.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 100 (1981), S. 59-68 
    ISSN: 1432-1335
    Keywords: Actin ; Keratin ; Parotid gland tumors ; Myoepithelial cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The aim of this study was to analyze the filament distribution in the parotid gland and their tumors. A correlation to the histogenetic implications and histological properties was attempted. Normal rat and human parotid glands as well as pleomorphic adenomas and squamous cell carcinomas of this gland were examined by the indirect immunoperoxidase technique using antibodies to the keratin polypeptide of 67,000 dalton, and 55,000 dalton and anti-actin auto-antibodies. Both keratin and actin antigens were demonstrated in the duct system and in the myoepithelial cells of the normal salivary glands. The acinar cells remained negative. In pleomorphic adenomas, there were numerous keratin-positive spindle-shaped cells which represented the so-called myoepithelial cells. These cells were demonstrated to contain actin, too. The tubular duct-like structures were labeled by keratin antiserum and by anti-actin auto-antibodies. In squamous cell carcinomas, the majority of the tumor cells were strongly labeled by keratin antibodies. Actin was detected in these malignant cells, too. Our results show important differences in the cellular elements of the normal salivary glands with regard to their filament distribution. In normal and tumoral conditions, our findings support the hypothesis of the epithelial nature of the myoepithelial cells. Our preliminary results encourage the research of filamentous structures for scientific and diagnostic purposes.
    Type of Medium: Electronic Resource
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