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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Experimental dermatology 8 (1999), S. 0 
    ISSN: 1600-0625
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Recent progress with innovative, experimental gene therapy approaches in animals, and recent improvements in our understanding and manipulation of stem cells, gene expression and gene delivery systems, have raised plenty of hopes in essentially all branches of clinical medicine that hitherto untreatable or poorly manageable diseases will soon become amenable to treatment. Few other organ systems have received such enthusiastic reviews in recent years as to the chances and prospects of gene therapy as the skin, with its excellent accessibility and its pools of – seemingly – readily manipulated epithelial stem cells (cf. Cotsarelis et al., Exp Dermatol 1999: 8: 80–88).However, as in other sectors of clinical medicine, the actual implementation of general gene therapy strategies in clinical practice has been faced with a range of serious difficulties (cf. Smith, Lancet 1999: 354 (suppl 1): 1–4; Lattime & Gerson (eds.), Gene Therapy of Cancer, Academic Press, San Diego, 1999). Thus, it is critically important to carefully distinguish unfounded hype from justified hope in this embryonal area of dermatologic therapy, to discuss in detail what can be realistically expected from cutaneous gene therapy approaches in the next few years, and importantly, what kind of promises should not be made to our patients at this time.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1600-0625
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Ichthyosis bullosa of Siemens (IBS) is a rare disorder of cornification characterized by blister formation in the upper suprabasal layers of the epidermis. Molecular analysis of IBS has identified mutations in the keratin 2e (K2e) gene, which is located in the type II keratin gene cluster on chromosome 12q. We have studied two IBS families and have identified heterozygous point mutations in codon 493 of the K2e gene in both families. Whereas a non-conservative amino acid substitution at position 117 of the 2B region of K2e (E117K) was associated with a severe phenotype in family 1, family 2 showed mild clinical features as a result of a conservative substitution (E117D). These data suggest a phenotype–genotype correlation in these families.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK; Malden, USA : Munksgaard International Publishers
    Experimental dermatology 14 (2005), S. 0 
    ISSN: 1600-0625
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract:  For a long time, the mantra of acne pathogenesis debates has been that acne vulgaris lesions develop when (supposedly largely androgen-mediated) increased sebum production, ductal hypercornification, and propionibacteria come together with local inflammatory process in the unlucky affected individual. And yet, the exact sequence, precise interdependence, and choreography of pathogenic events in acne, especially the ‘match that lights the fire’ have remained surprisingly unclear, despite the venerable tradition of acne research over the past century.However, exciting recent progress in this – conceptually long somewhat stagnant, yet clinically, psychologically, and socioeconomically highly relevant – everyday battlefield of skin pathology encourages one to critically revisit conventional concepts of acne pathogenesis. Also, this provides a good opportunity for defining more sharply key open questions and intriguing acne characteritics whose underlying biological basis has far too long remained uninvestigated, and to emphasize promising new acne research avenues off-the-beaten-track – in the hope of promoting the corresponding development of innovative strategies for acne management.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Experimental dermatology 8 (1999), S. 0 
    ISSN: 1600-0625
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: Although there are clear parallels between apoptosis and epidermal terminal differentiation it is unclear whether terminal differentiation of keratinocytes is a form of apoptosis. We found that apoptosis was rare in adherent cultures of normal keratinocytes, even when growth factors were removed. When keratinocytes were placed in suspension for 24-96 h the majority of cells were induced to undergo terminal differentiation, as assessed by involucrin expression and cornified envelope assembly, but few cells underwent apoptosis, as assessed by morphological examination, TUNEL labelling and by DNA laddering. Withdrawal of serum and growth factors stimulated apoptosis of suspended keratinocytes but led to some reduction in the number of cells that underwent terminal differentiation. At 96 h the majority of cells retained their nuclei in the presence or absence of serum and growth factors. In normal epidermis only occasional cells within the granular layer had apoptotic nuclei, determined by TUNEL labelling and light and electron microscopy. In affected epidermis of psoriasis, Darier's disease and pityriasis rubra pilaris, diseases characterized by perturbation of growth, differentiation or adhesion, light microscopy revealed no higher proportion of apoptotic nuclei than in normal epidermis. However, the majority of viable epidermal layers in diseased skin were positive by TUNEL labelling, suggesting that TUNEL is not always a specific marker of apoptosis in keratinocytes. We conclude that in vivo and in culture keratinocyte terminal differentiation and apoptosis are distinct cellular events, subject to different stimuli.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 453 (1985), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 277 (1985), S. 499-501 
    ISSN: 1432-069X
    Keywords: Anchoring fibrils ; Basal-cell carcinoma ; Basal-cell nevus syndrome ; Bullous pemphigoid ; Laminin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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