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  • 1
    Digitale Medien
    Digitale Medien
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 3367-3372 
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: A microscope using three water immersion objective lenses which realizes confocal, 4Pi-confocal and various confocal theta microscopies in fluorescence, transmission, scattered, and reflection mode is described. An argon-ion laser is the primary light source. A pulsed titanium-sapphire laser allows two-photon absorption fluorescence microscopy. The instrument has a predicted resolution of 100 nm along the illumination axis and a three-dimensional resolution of 5×106 nm3 for lenses each with a numerical aperture of 0.75. This is an improvement of an order of magnitude over a confocal fluorescence microscope using the same lens. Applications of the microscope range from observation of a sample at three different angles, to confocal theta fluorescence microscopy with multiphoton absorption. Since mounting and immersion media are identical, aberrations become negligible. The large working distance of 2 mm makes the instrument ideal for the observation of biological samples of up to 1.5 mm in diameter such as drosophila embryos.
    Materialart: Digitale Medien
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  • 2
    ISSN: 1365-4632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background. Comparisons of cases of systemic lupus erythematosus (SLE) with cases of rheumatoid arthritis and other rheumatologic disorders affords the basis of the 1982 revised criteria of the American Rheumatism Association (ARA) for classifying SLE cases. We address three questions: Do comparisons of LE cases with non-LE cases that have suggestive skin lesions yield criteria for use in dermatology clinics for primary classification of cases with photo distributions of skin lesions? Do comparisons of SLE with cutaneous LE cases yield the same or similar criteria to the revised ARA criteria for SLE? How should subacute cutaneous LE cases be evaluated for signs of significant systemic involvement? Methods. Discriminant analyses on 168 cases with skin lesions suggestive of LE were performed using data based on the ARA criteria for SLE and study factors for cutaneous LE suggested by the European Academy of Dermatology and Venereology. Results. These yielded two sets of criteria: (1) The 11 preliminary, dermatologic first step criteria (10 plus 1 for discoid lesions and histology) serve to classify cases as LE or non-LE. (2) The 11 preliminary, dermatologic second step criteria classify LE cases as cutaneous LE or systemic LE. Interestingly, 5 of 11 of these second step criteria differ from the 11 ARA criteria for systemic LE. These second step criteria afford a useful means of distinguishing between subacute cutaneous LE cases with or without significant systemic involvement. Conclusions. The study factors included in both the first and the second step criteria fall into three groups, notably clinical criteria, laboratory criteria, and “added study factors.” The latter factors distinguish between the groups compared (LE VS. non-LE and cutaneous vs. systemic LE) but not as well as the study factors included as “criteria.”
    Materialart: Digitale Medien
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  • 3
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    International journal of dermatology 31 (1992), S. 0 
    ISSN: 1365-4632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Patients with bullous pemphigoid and epidermolysis bullosa acquisita may have similar clinical, histologic, and routine immunohistologic features. These two diseases can be distinguished by routine diagnostic studies either on a patient's serum tested by indirect immunofluorescence on salt-split normal skin or by obtaining a fresh perilesional skin biopsy, inducing a split at the lamina lucida, and testing for the site of IgG deposition by direct immunofluorescence. Often the serum studies are negative, while direct immunofluorescent studies yield the characteristic linear IgG staining of the basement membrane zone. To eliminate the need for a repeat biopsy to make a laboratory differential diagnosis, we studied the efficacy of salt-splitting perilesional skin biopsies that had been previously submitted and frozen for routine direct immunofluorescent studies. The biopsies were thawed, salt-split, and processed for direct immunofluorescence. Three epidermolysis bullosa acquisita biopsies and seven bullous pemphigoid biopsies examined demonstrated IgG staining at sites consistent with their respective diagnoses. The IgG appeared in the dermal side of the split biopsies in epidermolysis bullosa acquisita and predominantly, or exclusively, in the epidermal side in bullous pemphigoid. Thus the direct immunofluorescent study of previously frozen and subsequently salt-split skin biopsies may be used for the differential diagnosis of bullous pemphigoid from epidermolysis bullosa acquisita. In most cases, it may eliminate the need for a repeat biopsy.
    Materialart: Digitale Medien
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  • 4
    ISSN: 1365-4632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Abstract: A group of 140 cases of various forms of lupus erythematosus (LE) were examined for 24 variables, inducting the 11 criteria of the American Rheumatism Association (ARA) for the classification of systemic lupus erythematosus (SLE), and 13 additional criteria suggested by the European Academy of Dermatology and Venerology (EADV) for studies of cutaneous LE with or without systemic involvement. The EADV study factors included skin histopathology and immunopathology, complement and IgG levels, and other laboratory tests, as well as selected clinical findings, most notably the papulosquamous and/or annular lesions that characterize sub acute cutaneous LE (SCLE). The patients examined included 50 SLE, 35 SCLE, 30 discoid LE (DLE), 25 disseminated DLE (DDLE), and 17 polymorphous light eruption (PMLE) cases. Preliminary analyses of the data reveal the following: (1) The SCLE cases differed significantly from SLE, DLE, and DDLE in 10 of 11 ARA criteria (all but photosensitivity). (2) The frequencies of positive findings in SCLE also differed significantly for 11 of 13 EADV study factors. (3) While no significant differences appeared in the frequency of photosensitivity between the five study groups, photo-testing revealed significant increases in the frequency of persistence of the photo reactions for 10 days and their Koebnerization in the SCLE cases. (4) The presence of SS-A (Ro)/SS-B (La) antibodies had some predictive value for the appearance of systemic involvement in SCLE, as seen by the increased frequencies of five or more ARA criteria, although highly significant differences from SLE occurred in the absence of renal involvement and lower frequency of ANA and LE band test. We conclude from these studies that the classification of the major forms of cutaneous LE, with and without systemic involvement, requires not only the ARA criteria, but also the examination of other factors such as those recommended by the EADV, and that the study groups should include SLE, SCLE, DLE, DDLE, and non-LE controls such as PMLE.
    Materialart: Digitale Medien
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  • 5
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    International journal of dermatology 29 (1990), S. 0 
    ISSN: 1365-4632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 94 (1990), S. 3499-3502 
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    International journal of dermatology 32 (1993), S. 0 
    ISSN: 1365-4632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    International journal of dermatology 30 (1991), S. 0 
    ISSN: 1365-4632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Publishing Ltd
    International journal of dermatology 29 (1990), S. 0 
    ISSN: 1365-4632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 10
    ISSN: 1572-879X
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract Coke formation and catalyst deactivation by the reaction of methanol over a zeolitic catalyst based on H-ZSM-5 for various stream gases (N2, H2 or C4H10) were studied by13C CP MAS NMR,29Si MAS NMR,129Xe NMR and catalytic test reactions with different stream gases (N2, H2, C4 H10). The rate of deactivation varies in the order N2 〈 H2 〈 C4H10, which can be explained by cracking of paraffinic, olefinic and alkylaromatic coke deposits under the influence of the hydrogenating properties of the stream gas.
    Materialart: Digitale Medien
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