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  • 1
    ISSN: 1432-069X
    Keywords: Pityriasis rubra pilaris ; Histochemistry ; Autoradiography ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Five patients with pityriasis rubra pilaris (PRP) were analyzed by means of light and electron microscopy as well as by histochemistry and autoradiography. The results were compared with findings in psoriasis vulgaris. In PRP we found a moderate increase of the labeling index of epidermal cells, a highly increased labeling index of dermal infiltrating cells, and a mild spongiosis, and in the stratum granulosum, a decreased number of tonofilaments and an increased number of keratinosomes. The horny layer in PRP showed a pronounced histochemical and electron microscopical parakeratosis, even when histological parakeratosis was absent. In contrast with psoriasis vulgaris, there was no exocytosis of polymorphonuclear leucocytes into the epidermis, the papillomatosis index was normal, and there were no tortuous capillaries in the dermal papillae. The stratum granulosum was always present and sometimes thickened, showing electron microscopical changes different from those referred to in psoriasis. These changes point to a relatively distinct pattern of epidermal changes in PRP.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Clinical oral investigations 4 (2000), S. 66-69 
    ISSN: 1436-3771
    Keywords: Key words Periodontitis ; Gingival recession ; Abnormal scarring ; Early tooth loss ; Ehlers-Danlos syndrome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Ehlers-Danlos type VIII is a rare disorder characterized by soft, hyperextensible skin, abnormal scarring, easy bruising, and generalized periodontitis with early loss of teeth. To illustrate the clinical dermatological and dental features, we present the case history of a 20-year-old patient who has suffered from poor healing of wounds at the shins and knees since childhood, which have developed into hyperpigmented atrophic scars. In the course of orthodontic treatment during the last 3 years, severe apical root resorption, gingival recession, and loss of alveolar bone were observed. Family history was noncontributory for any skin or tooth disorders. The typical clinical signs confirmed the diagnosis of Ehlers-Danlos syndrome type VIII. As there is no specific treatment for the disorder, management is limited to the symptomatic treatment of the dental disease. It seems advisable to consider carefully the indications for orthodontic treatment in patients with Ehlers-Danlos type VIII syndrome.
    Type of Medium: Electronic Resource
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