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  • 1
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Summary Background Lupus erythematosus tumidus (LET), a photosensitive skin disorder with characteristic clinical and histological features, has not been generally accepted as a subset of cutaneous lupus erythematosus (CLE). Objectives To analyse the expression of epidermal surface molecules in skin biopsy specimens from patients with LET and to relate the results to other variants of CLE, such as discoid lupus erythematosus (DLE) and subacute CLE (SCLE). Methods In total, 45 patients with different subtypes of CLE were included in the study, and cryostat sections from primary and ultraviolet (UV) A- and UVB-induced skin lesions were investigated using immunohistochemical methods. Results In contrast to healthy controls, skin lesions of LET showed upregulation of intercellular adhesion molecule-1 (ICAM-1) and histocompatibility class II molecules (HLA-DR), with an expression pattern resembling that seen in DLE and SCLE. Furthermore, staining with a monoclonal antibody against 27E10, a distinct marker for cell activation and differentiation, revealed intense focal or band-like labelling of all epidermal layers independent of the type of lesion. Conclusions Expression of epidermal surface molecules such as ICAM-1, HLA-DR and 27E10 is equally upregulated in primary and UV-induced lesions of patients with LET, DLE and SCLE. These results support our recent clinical findings that LET represents a distinct subset of CLE with a similar immunopathomechanism rather than a different disease.
    Materialart: Digitale Medien
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  • 2
    Digitale Medien
    Digitale Medien
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 36 (1980), S. 916-918 
    ISSN: 1600-5740
    Quelle: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Materialart: Digitale Medien
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  • 3
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 7 (1980), S. 0 
    ISSN: 1574-6968
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    Journal of applied electrochemistry 10 (1980), S. 233-237 
    ISSN: 1572-8838
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: Abstract A brief review of the origins of bipolar leakage currents, the means used for its measurement and calculation and the importance of minimizing the phenomenon, is followed by a novel means of computing leakage currents more accurately than hitherto possible, using a commercially available simulation program. This has the further advantage that the reali-V characteristics of an electrochemical cell can be used, there being no need to represent the cell itself as a zener diode which is a poor representation of reali-V cell characteristics.
    Materialart: Digitale Medien
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  • 5
    Digitale Medien
    Digitale Medien
    Springer
    Journal of applied electrochemistry 10 (1980), S. 635-647 
    ISSN: 1572-8838
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: Abstract The performance of undivided cells with disparate anode-cathode ratios was studied using cerium (IV) reduction as a test reaction. The effects of electrode material and surface texture are reported. Results have been fitted to a computer-based model, and the role of bubble evolution and electrode coverage by bubbles is considered. Results are contrasted with those of a similar study using hypochlorite formation, which can give qualitatively different results.
    Materialart: Digitale Medien
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  • 6
    Digitale Medien
    Digitale Medien
    Springer
    Journal of applied electrochemistry 11 (1981), S. 261-267 
    ISSN: 1572-8838
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: Abstract The steady-state formation of sorbitol by cathodic reduction of glucose was studied in a parallel-plate reactor of 200 cm2 electrode area. Earlier work was extended to explore the effect of flow rate, pH and current density. The effect of temperature between 20° and 47° C and the use of amalgamated lead as compared with chemical lead and other metals is discussed. It is shown that addition of Zn2+ ions accelerates the reaction and the reasons for this are discussed. The implications for industrial application are considered.
    Materialart: Digitale Medien
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  • 7
    Digitale Medien
    Digitale Medien
    Springer
    Journal of applied electrochemistry 13 (1983), S. 189-207 
    ISSN: 1572-8838
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: Abstract Anodic or cathodic processes in which protons are released or consumed, respectively, lead to local pH changes at the electrode surface. The phenomenon is important in several branches of metal finishing, in corrosion, electro-organic synthesis and other branches of applied electrochemistry, as well as being a factor which can invalidate mechanistic investigations. The concept of ‘pHs’ (near-surface pH) is examined, as are the experimental techniques which have been used to measure it. Many of these are inherently weak. Published results are shown to be largely discrepant, both in respect of the magnitude of the effect and even its incidence. Attempts to treat the phenomenon theoretically are briefly summarized.
    Materialart: Digitale Medien
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  • 8
    Digitale Medien
    Digitale Medien
    Springer
    Journal of applied electrochemistry 14 (1984), S. 605-613 
    ISSN: 1572-8838
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: Abstract The electrodeposition of copper-silver and copper-nickel powders from aqueous ammoniacal solutions at a continuously scraped rotating cylinder cathode is described. Ag-Cu powders can be prepared under these conditions, but the individual particles are inhomogeneous and the extent of this inhomogeneity is examined. Surface areas (from BET) and particle size distributions are reported, and the morphology is considered. Cu-Ni powders deposited under these conditions are heavily contaminated with oxide/ hydroxides and this is attributed to an increase in near-cathode pH.
    Materialart: Digitale Medien
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  • 9
    Digitale Medien
    Digitale Medien
    Springer
    Archives of environmental contamination and toxicology 39 (2000), S. 462-468 
    ISSN: 1432-0703
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Energietechnik , Medizin
    Notizen: Abstract Standard methods of sediment toxicity testing are fairly well accepted; however, as with all else, evolution of these methods is inevitable. We compared a standard ASTM 10-day amphipod toxicity testing method with smaller, 48- and 96-h test methods using very toxic and reference sediments. In addition we compared parallel exposures of single species, either the amphipod Ampelisca abdita or the mysid Americamysis bahia, to multiple species, mysid, and amphipod, cohabiting the same types of chambers. These comparisons were performed for both water-only and sediment-water tests. Results of the comparison of the standard ASTM 10-day amphipod test with the smaller, 48- and 96-h test chambers indicate that survival was high in both test designs using the reference sediment. With toxic sediments, complete mortality occurred in less than 48 h using the smaller experimental chambers and only after 96 h in the larger experimental chambers. We concluded that although time to death is shorter in the smaller, shorter exposure chambers, there was no overall change in mortality for the organisms, and that the smaller chambers were predictive of the results obtained with larger chambers and longer exposures. For multiple species testing in whole sediment exposures there was no change in toxicity to either the amphipod or the mysid when they cohabited the same chamber. In contrast, for water-only exposures, A. bahia demonstrated less sensitivity when cohabiting the same chamber as A. abdita. Therefore, during whole sediment testing we can add A. bahia and A. abdita to the same test chamber without changing the toxicity to either species; however, in our 10-ml water-only exposures, the species should be tested separately.
    Materialart: Digitale Medien
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  • 10
    Digitale Medien
    Digitale Medien
    Springer
    Der Hautarzt 51 (2000), S. 818-825 
    ISSN: 1432-1173
    Schlagwort(e): Schlüsselwörter Lupus erythematodes ; Kutane Manifestationen ; Einteilung ; Klinische Symptomatik ; Sonderformen ; Keywords Lupus erythematosus ; Cutaneous manifestations ; Classification ; Clinical symptoms ; Distinct subjects
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Abstract Lupus erythematosus (LE) is a disease with a wide spectrum of cutaneous and systemic manifestations and has been the subject of many studies over several decades. Clinical features of patients with LE show a great variation, and for this reason it is difficult to develop a unifying concept of this disease. Consequently, this has led to the identification of subsets which have been defined by constellations of clinical and photobiological features, histological changes as well as laboratory abnormalities. Besides the characteristic classical forms such as systemic LE (SLE), subacute cutaneous LE (SCLE), and discoid LE (DLE), there are uncommon variants of LE which often lead to diagnostic difficulties. Bullous LE (BLE) and urticarial vasculitis are listed as characteristic but non-specific manifestations of systemic LE. LE tumidus (LET), LE hypertrophic/verrucous (LEHV), chilblain LE, and LE profundus (LEP) are uncommon subtypes of chronic cutaneous LE. Annular erythema and papulonodular mucinosis are further uncommon cutaneous manifestations of LE. This clinical review summarizes the typical features of the uncommon forms of LE in order to improve clinical diagnostic precision and to achieve a better differentiation of the subtypes.
    Notizen: Zusammenfassung Der Lupus erythematodes (LE) ist eine Erkrankung, die ein breites Spektrum von kutanen und systemischen Manifestationen aufweist und seit vielen Jahrzehnten die medizinische Wissenschaft beschäftigt. Die große Vielfalt der klinischen Befunde erlaubt es nicht, ein einheitliches Krankheitsbild zu definieren, so dass eine Klassifikation verschiedener Subtypen, die sich bezüglich klinischer, photobiologischer, histologischer und serologischer Merkmale unterscheiden, eingeführt wurde. Neben den gut definierten klassischen Formen wie systemischer LE (SLE), subakut kutaner LE (SCLE) und diskoider LE (DLE) gibt es seltene Manifestationen, die immer wieder diagnostische Schwierigkeiten bereiten. Der bullöse LE (BLE) und die Urtikariavaskulitis werden als charakteristische, aber nicht spezifische Manifestationsformen des systemischen LE aufgeführt. Der LE tumidus (LET), der LE hypertrophicus/verrucosus (LEHV), der Chilblain LE und der LE profundus (LEP) werden als seltene Subtypen des chronisch kutanen LE betrachtet. Das anuläre Erythem und die papulöse Muzinose werden als weitere seltene kutane Manifestationsformen des LE beschrieben. In dieser klinischen Übersicht werden die charakteristischen Merkmale dieser seltenen Sonderformen des LE herausgestellt, um zum weiteren Verständnis und zur genaueren Differenzierung der verschiedenen Subtypen beizutragen.
    Materialart: Digitale Medien
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