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
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 398 (1983), S. 237-246 
    ISSN: 1432-2307
    Keywords: Wound repair ; Lectin affinity ; Keratinocyte differentiation ; Autoradiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The migratory and proliferative capacity of oral epithelium was studied after induction of subepithelial suction blisters in palatal rat mucosa. FITC-coupled lectins and their affinities to epithelial cells at the wound margin were analyzed by immunfluorescence microscopy. Immunocytochemical distribution of 67 K-keratin polypeptides in different epithelial layers were studied using specific antisera against keratin proteins. By means of3H-thymidine-autoradiography the proliferation of epithelial basal cells and their migration at the wound edge was quantified by evaluation of the labelling index. Double labelling was performed, combining the autoradiographic and the keratin staining technique. It was found that the subepithelial suction blister showed rapid repair (epithelial regeneration after 3–4 days). Peanut Agglutinin (PNA) showed a selective affinity to the basal 2–3 layers of oral rat mucosa. No modifications of lectin affinities were found in epithelial wound repair. PNA-positive keratinocytes were demonstrated in the migratory epithelial tongue. The selective presence of 67 K-keratin (67 K) in the suprabasal epithelial cell layers was interpreted as an indication of the differentiation process in rat oral mucosa. The3H-thymidine-labelling index of basal cells increased significantly, beginning at the wound edge after 24 h. The peak of the labelling index curve was located in the vicinity of the wound after 96 h. Double labelling technique revealed 67 K-negative and3H-thymidine-positive basal cells as well as 67 K-positive and3H-thymidine-negative cells at the migration front. These observations support findings that migrating epithelial cells in oral wound healing derive both from undifferentiated (str. basale) and from differentiated (inferior str. spinosum) cell compartments.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 403 (1984), S. 1-13 
    ISSN: 1432-2307
    Keywords: Nude mouse ; Salivary glands ; Heterotransplantion ; Immunohistology ; Ductal proliferation ; Autoradiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 35 specimens of human parotid gland and 37 of submandibular gland were transplanted into athymic nude mice. At distinct time intervals, from 1 day to 8 months the transplants were collected and examined. The transplanted glands were studied by light microscopy, immunohistology and autoradiography. The following changes were detectable: 1. acute injury to the xenograft and inflammatory reaction (day 1–7), 2. regeneration of the transplant and the beginning of adaptation to the “mouse milieu” (day 8–30), 3. completion of adaptation (day 30 and later). The presence of the following substances was analysed: amylase, lactoferrin, secretory component, tissue polypeptide antigen (TPA). Amylase was only detected in the early transplants. Lactoferrin was seen only in the small duct system. TPA was present during all transplantation periods and was quantitatively correlated with the3H thymidine labeling index. From our observations we can say that the salivary glands show two different reacting compartments: a large and a small duct system. The histogenesis of the xenografts, and the relationships of the changes observed to human salivary gland diseases were discussed.
    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...