Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1432-069X
    Keywords: Epidermal spinous cells ; Granular cells ; Keratins ; Flow cytometric sorting
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-069X
    Keywords: Langerhans cells ; Labeling index
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1600-0625
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Human cord blood CD34+ progenitors cultured in the presence of granulocyte-macrophage colony-stimulating factor (GM-CSF), tumor necrosis factor-α (TNF-α) and transforming growth factor-β (TGF-β) generate a heterogeneous population of dendritic cells (DC), including Langerhans cells (LC). This combination of cytokines has been shown to be crucial for differentiation into LC. After day 5 of culture, TNF-α has been maintained in the medium in most studies despite the observation of spontaneous maturation of LC after day 12. Five-day samples of in vitro differentiated LC were cultured in parallel with or without TNF-α. The absence of TNF-α was shown to: (1) slow down proliferation without triggering apoptotic cell death, (2) enhance the percentage of LC, (3) delay or abrogat the expression of CD83, CD86, HLA-DR and CD208 molecules, and (4) maintain endocytosis by receptor and macropinocytosis. The withdrawal of TNF-α abrogated the spontaneous synthesis of matrix metalloproteinases. At day 12, TNF-α-deprived LC were less efficient in allogeneic T cell activation than LC cultivated with TNF-α. These data indicate that the suppression of TNF-α after day 5 maintains cells in an immature state and provides a population with 80% of LC at day 12.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral pathology & medicine 13 (1984), S. 0 
    ISSN: 1600-0714
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Six oral papillomas and 7 oral leukoplakias were studied with genus-specific antibodies against detergent-disrupted papillomaviruses. Indirect immunofluorescence staining was applied to frozen sections. Distinct nuclear staining of superficial keratinocytes was seen in 5 of 6 oral papillomas, 2 of 5 homogenous leukoplakias, and in 2 cases of nodular leukoplakia, one of these showing transition into an invasive carcinoma. Papillomavirus antibodies offer a new way to detect and localize papillomaviruses in epithelial hyperplasias. The relevance of the immunomorphological identification of papillomavirus-associated antigens is discussed with special reference to the molecular hybridization technique.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    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
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 261 (1978), S. 77-79 
    ISSN: 1432-069X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    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
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 267 (1980), S. 179-188 
    ISSN: 1432-069X
    Keywords: Keratin ; Polypeptide antibodies ; Stratum corneum ; Keratin ; Polypeptid ; Antikörper ; Stratum corneum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Antikeratin-Polypeptidseren (K.P.S.) wurden durch Immunisierung von Meerschweinchen mit fibrösen Proteinen des Stratum corneum erhalten, welches über die S.D.S. Polyacrylamid-Gel-Elektrophorese von normaler menschlicher Epidermis gewonnen wurde. Nach Absorption mit Erythrocyten und Leberpuder wurden diese Sera mit Hilfe der indirekten Immunfluorescenztechnik an verschiedenen Substraten getestet. Es wurden Antikörper gegen Polypeptide P1 und P2 mit einem Molekulargewicht von 67 000 und 62 000 Dalton nachgewiesen, die gegen cytoplasmatische Antikörper der Keratinocyten des Stratum spinosum und des Stratum granulosum der normalen menschlichen und Kaninchenepidermis gerichtet war. Ein Nachweis in den Basalzellagen konnte nicht erbracht werden. Dadurch wurden die verschiedenen Differenzierungsstadien der Zellen belegt, die sich zu Keratinocyten entwickeln und die oberhalb der Basalschicht lokalisiert sind. Polypeptide P3 des Molekulargewichts 53 000 Dalton induzieren niedrigere Antikörpertiter, die die gesamte Epidermis markieren einschließlich der Basalzellage. Polypeptide mit einem Molekulargewicht 49 000 Dalton schienen keine immunogenetische Wirkung in diesen Experimenten zu haben. Tumoren, wie Basalzellcarcinoma und Bindezellcarcinom, wie auch Warzen, wiesen eine deutlich verminderte Expression des Keratinantigens auf. Es wurde keine Analogie zwischen experimentell erzeugten Keratinpolypeptid-Antikörper und cytoplasmatischen Antikörpern der menschlichen Epidermis.
    Notes: Summary Anti-keratin polypeptide sera (K.P.S.) were obtained by immunizing guinea pigs with fibrous proteins from stratum corneum, which were acquired from normal human epidermis by means of S.D.S. polyacrylamide gel electrophoresis. After absorption with red blood cells and liver powder the sera were tested by indirect immunofluorescence technique on different substrates. Antibodies against polypeptides P1 and P2 of M.W. 67,000 and 62,000 dalton, respectively, were directed toward cytoplasmic Ag of keratinocytes of spinous and granular layer of normal human and rabbit epidermis. No labeling could be detected in the basal cell layer. This finding is in favor of various differentiation stages of the keratinizing cells. P3 of M.W. 53,000 dalton induced low titre antibodies which labelled the whole epidermis, including the basal cell layer. The fourth polypeptide of M.W. 49,000 dalton seemed not to be immunogenic in such experiences. In tumors, such as basal cell carcinoma, squamous cell carcinoma, and warts, the expression of keratin antigens is markedly diminished. No analogy could be drawn between experimental keratin polypeptide antibodies and the human epidermal cytoplasmic antibodies which were detected in some patient sera.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...