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  • 11
    ISSN: 0169-7439
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 12
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Human skin was irradiated in vivo with a single UVB dose (100 mJ/cm2 or 200 mJ/cm2) to examine simultaneously the antigen-presenting function and interleukin-1 (IL-1) production capacity of irradiated epidermal cells (EC). Suction blisters were produced on irradiated areas on days 0, 3 and 7 after UVB. Irradiated EC were harvested and co-cultured with autologous T lymphocytes in the presence of antigens (PPD, HSV) or mitogen (ConA). Culture supernatants were tested for IL-1 activity using the thymocyte comitogenity assay. We found that a single 200 mJ/cm2 dose of UVB caused an immediate suppression of the antigen-presenting function of EC, but no alteration in their IL-1 production capacity or surface marker expression (ATPase, CD1). PPD-and HSV-induced lymphocyte proliferation was decreased 70-80% and ConA-driven proliferation 30% when compared to non-irradiated EC. However, this suppression was restored on days 3 and 7 after UVB irradiation, this being coexistent with an increased capacity of EC to produce IL-1. It remains to be elucidated whether the immediate UVB-induced photoimmunosuppression observed in the present study is due to inhibitory mediators or impaired membrane function of EC or both.
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 34 (1996), S. 0 
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We have studied the influence of variations in allergen concentration and UVA dosaging on the results of photopatch testing with the Scandinavian standard photopatch series in 29 patients with photocontact and/or contact allergy to 1 or several of the allergens in that series. Photocontact test reactions were more sensitive to allergen dilution than plain contact test reactions. Even dilution from the standard 5% to 2.5% or 1.25% significantly reduced para-aminobenzoic acid photocontact test reactions. Reducing the UVA dose from the standard 5 J/cm2 to 2.5 or 1 J/cm2 in 2 out of 5 cases turned a significant (++) reaction into a doubtful one (+). Increasing the standard UVA dose of 5 J/cm2 to 20 – 40 J/cm2 turned a single + photocontact reaction to trichlorcarbanilide and a single 1 + plain contact reaction to chlorhexidine into ++ reactions. In the majority of eases, however, neither photocontact nor plain contact test reactions were augmented by UVA doses up to 80 J/cm2. We conclude that a UVA dose of 5 J/cm2 is sufficient for eliciting photocontact allergic test reactions, and that a reduction of either the UVA dose level or the standard allergen concentrations of the Scandinavian photopatch test guidelines may cause loss of significant photocontact test reactions in a proportion of the cases.
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 27 (1962), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Staphylococci are destroyed during the heat processing of both smoked and fully cooked hams. Although these organisms are capable of growth in the presence of sodium chloride, sodium nitrate, and sodium nitrite in the concentrations used in cored meats, they are readily destroyed in the presence, as well as the absence, of these agents at a temperature of 137° F. Twenty-two of 53 strains of Staphylococcus aureus were killed in excess of 99% after 10 min exposure at this temperature. Thirty-one strains exhibited more resistance, but were destroyed in excess of 99.9% after 60 min at 137°F. The significance of these results in terms of previous studies is discussed.
    Type of Medium: Electronic Resource
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  • 15
    ISSN: 0304-3991
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Electrical Engineering, Measurement and Control Technology , Natural Sciences in General , Physics
    Type of Medium: Electronic Resource
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  • 16
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Tetrahedron: Asymmetry 2 (1991), S. 109-110 
    ISSN: 0957-4166
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 44 (1988), S. 176-179 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 18
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 246 (1973), S. 299-302 
    ISSN: 1432-069X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Der Immunglobulin E-Gehalt atopischer sowie nichtatopischer Haut wurde nach Kochsalzextraktion von Hautbiopsien mit einer Radio-Immunmethodik gemessen. Im Vergleich zu normaler, nichtatopischer Haut zeigte die nicht erkrankte Haut von Patienten mit Neurodermitis eine mehr als zweifach erhöhte Konzentration von IgE. Die erkrankte Haut dagegen enthielt fast eine dreifach erhöhte Konzentration von IgE. Eine direkte Korrelation zwischen Serum und Haut-IgE-Spiegel konnte nicht beobachtet werden.
    Notes: Summary The immunoglobulin E content of non-atopic and atopic skin has been measured in saline extracts of skin biopsies, using the radio-immunosorbent method. Compared to normal non-atopic skin, the clinically uninvolved skin of patients suffering from atopic dermatitis contained a more than 2-fold concentration of IgE, while clinically affected skin contained an almost 3-fold concentration, on the average. No simple correlation between serum and skin IgE levels could be found.
    Type of Medium: Electronic Resource
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  • 19
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 270 (1981), S. 255-261 
    ISSN: 1432-069X
    Keywords: PUVA ; Suppressor cells ; Contact sensitivity ; Photosensitivity ; PUVA ; Suppressor-Zellen ; Kontaktüberempfindlichkeit ; Photosensibilisierung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Zwei Patienten mit lang bestehender Kontaktempfindlichkeit auf Chrom wurden mit PUVA behandelt. Ein Patient, der gleichzeitig eine Photosensibilisierung aufweist, reagierte sehr günstig. Seine Haut besserte sich und die Lichttoleranz erhöhte sich. Dies war von einer Abnahme der Phototestreaktivität begleitet, die auf der PUVA-exponierten Haut (pigmentiert) graduiert werden konnte. Der Läppchentest und der Phototest auf der für PUVA geschützten Haut zeigte keine Verminderung der Hauttestreaktivität. PUVA-Behandlung verursachte eine Abnahme der Zahl der Rosettenbildenden T-Zellen und eine Intensivierung der Lymphocytenstimulation in beiden Patienten. Bei dem einen Patienten, der eine außergewöhnlich hohe PHA-induzierte Suppressor-Zellaktivität vor der Behandlung zeigte, wurden durch die Behandlung die Werte zur Norm zurückgebildet. Bei beiden Patienten wurde die PPD-induzierte Suppressor-Zellaktivität auf PWM deutlich durch PUVA-Therapie vermehrt. Andere Suppressor-Zellfunktionen waren nicht beeinträchtigt. Es wurde der Schluß gezogen, daß während der PUVA-Therapie wohl einige systemische immunologische Effekte auftreten können, der abschwächende Effekt auf die Kontaktsensibilisierung und Photosensibilisierung aber vornehmlich durch lokale Vorgänge in der Haut hervorgerufen werden.
    Notes: Summary Two male patients with longstanding contact sensitivity to chromium were treated with PUVA. One patient, suffering from concomitant photosensitivity, reacted very favorably; his skin lesions cleared and light tolerance increased. This was paralleled by a decrease in the photopatch test reactivity and by the extinction of the patch-test reactivity on PUVA-exposed (pigmented) skin. Patch and photopatch tests on PUVA-shielded skin showed no decrease in skin test reactivity. PUVA-treatment caused a decrease in the number of rosette-forming T cells and an increase in lymphocyte stimulation in both patients. In one patient, abnormally high PHA-induced suppressor cell activities were recorded prior to treatment; after PUVA therapy the values were back to normal. In both patients, the PPD-induced suppressor cell activity of PWM response was clearly increased by PUVA-therapy. Other suppressor cell functions were not much affected. It is concluded that while PUVA-therapy may produce some systemic immunological effects, its abating effect on contact sensitivity and photosensitivity is mainly mediated through local mechanisms in the skin.
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 272 (1981), S. 135-137 
    ISSN: 1432-069X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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