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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
    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: In recent years, cutaneous epithelial stem cells have attained a genuine celebrity status. They are considered the key resource for epidermal and skin appendage regeneration, and are proposed as a preferential target of cutaneous gene therapy. Follicular epithelial stem cells may also give rise to a large variety of epithelial tumors, and cutaneous epithelial stem cells likely are crucial targets for physical or chemical agents (including carcinogens) that damage the skin and its appendages. However, as this Controversies feature illustrates, few experts can agree on how exactly to define and identify these elusive cells, or on where precisely in the skin they are localized. Given their potential importance in skin biology, pathology and future dermatological therapy, it is, therefore, timely to carefully reconsider the basic questions: What exactly is a stem cell, and how can we reliably identify epithelial stem cells? How many different kinds are there, and how do they differ functionally? Where exactly in the skin epithelium is each of the putative stem cell subpopulations located, and can we selectively manipulate any of them?
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 70 (1992), S. 922-926 
    ISSN: 1432-1440
    Keywords: AIDS ; Granulocyte colony-stimulating factor ; Neutropenia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Frequent complications of human immunodeficiency virus infection are hematopoietic failure and poor tolerance of myelosuppressive drugs. Reasons for neutropenia resulting from hematopoietic failure are infection of the bone marrow and hematotoxicity of treatment with zidovudine, ganciclovir, sulfonamides, and interferons. Moreover, tumor necrosis factor-α, transforming growth factor-β and interferon-γ have been shown to suppress proliferation of bone marrow cells. Both granulocyte (G-CSF) and granulocyte-macrophage colony-stimulating factor (GM-CSF) increase neutrophil counts and ameliorate phagocytic and bactericidic function of neutrophils. We report eight cases of AIDS patients with serious infections and neutropenia (〈 750 cells/μl), who were treated concomitantly with recombinant human G-CSF (3–4 μg subcutaneously per kilogram body weight daily). G-CSF treatment was well tolerated in all patients and showed no side effects or disturbances of other lineages than neutrophils. Life-threatening bacterial infections were treated successfully by stimulating the neutrophil immune system. This therapy shortened the duration of subsequent treatment with antibiotics. Since human immunodeficiency virus infects CD4-positive monocytes and macrophages, which are stimulated by GM-CSF, G-CSF seems to be the cytokine of choice, if stimulation of the neutrophil lineage is warranted.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1440
    Keywords: Cryptococcal meningitis ; Acquired immune-deficiency syndrome ; Intracranial pres sure elevation ; Intracranial pressure elevation pathophysiology ; Cerebrospinal fluid drainage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Prior to the AIDS-era, elevation of intracranial pressure was known to be a typical complication of cryptococcal meningitis associated with an increased risk of early death. In AIDS-patients, however, the prevalence and clinical significance of this complication are as yet unclear. We analysed clinical features and courses, CSF findings, serological results and neuroimaging scans in acute cryptococcal meningitis in eight patients with AIDS. Five showed symptoms and signs compatible with raised intracranial pressure, which was life-threatening in one and the most probable cause of death in another. Serial monitoring of intracranial pressure together with repeated CSF analysis revealed that severe intracranial pressure elevation in AIDS related cryptococcal meningitis can occur in spite of effective antimycotic treatment, does not depend on an increased CSF/serum osmolality ratio or CSF overproduction and can be associated with normal cranial computed tomography and magnetic resonance imaging findings. Our data support the hypothesis that CSF reabsorption failure plays the crucial role in the pathophysiological mechanism. External lumbar drainage may be of benefit in selected cases of acute AIDS related cryptococcal meningitis with persisting life threatening elevation in intracranial pressure and normal computed tomogram.
    Type of Medium: Electronic Resource
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