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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 72 (1994), S. 343-349 
    ISSN: 1432-1440
    Keywords: Long-term manometry ; Progressive systemic sclerosis ; Esophageal involvement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Long-term manometry of the tubular esophagus was performed in 20 consecutive patients (18 females, 2 males; median age 56.5 years) with progressive systemic sclerosis (PSS) and a control group of 20 healthy subjects (18 females, 2 males; median age 56.5 years). The measurements were performed via a data logger of 1 MByte memory capacity with the help of two pressure sensors placed 8 and 18 cm above the lower esophageal sphincter. Esophageal contractions were analyzed with respect to pressure amplitudes in the esophagus distal and proximal, quotient of pressure amplitudes distal/proximal, number of contraction waves in a 24-h period, and kind of spreading (propulsive, simultaneous). In the PSS group there was a significant decrease in pressure amplitudes in the distal sensor (median 31.5 versus 39.5 mbar in controls, P 〈 0.02), in the quotient of pressure amplitudes distal/proximal (median 0.885 versus 1.25 in controls, P 〈 0.001), in the number of waves in 24 h (median 939.5 versus 1656 in controls, P 〈 0.01), and in the occurrence of propulsive waves (median 34% versus 57% in controls, P 〈 0.01). Fifteen patients (75%) had hypomotility disorders as compared to the control group, in which the lower limit of normal values was defined by the 5th percentile of descriptive analysis. These first data of long-term manometry in patients with PSS indicate that long-term manometry may be an effective method for identifying esophageal involvement in PSS.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1173
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1173
    Keywords: Schlüsselwörter Dreidimensionale Rekonstruktion ; 3D ; Dermatohistopathologie ; Morphologie ; Keywords Three-dimensional reconstruction ; 3D ; Histology ; Dermatology ; 3d ; Morphology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Background and Objective. The combination of digital image-analysis and computer-reconstruction of the three-dimensional architecture of the human skin can make this method usable on an acceptable time scale. Patients/Methods. We used biopsies of different diseases (malignant melanoma, lichen planus, psoriasis) and of normal skin. Immunhistologically stained sections were digitized and adjusted with respect to features of interest using the interlaced mode of an commercial image analysis system (Lucia G, Nikon GmbH, Düsseldorf). The sections have been segmented and the resulting three dimensional data sets were visualized on a UNIX based work station. Results. Three dimensional reconstruction provides a different view into the architecture of normal and diseased skin: for example, the course of the duct of sweat glands or the perforation of a malignant melanoma through the underlying infiltrate. Conclusions. A new rapid reconstruction method is presented producing multidimensional histological images of the skin within a few hours. This automation is of interest in basic research and should find its way into routine histological diagnosis.
    Notes: Zusammenfassung Hintergrund und Fragestellung. Die Kombination von computergestützter Bildanalyse und dreidimensionaler Rekonstruktion ermöglicht die wirklichkeitsgetreue Darstellung und Analyse der dreidimensionalen Architektur der menschlichen Haut bei akzeptablem Zeitaufwand. Patienten/Methodik. Verwendet wurden exemplarisch die im Rahmen der Routinediagnostik entnommenen Probebiopsien von 3 Patienten mit unterschiedlichen dermatologischen Krankheitsbildern (malignes Melanom, Lichen ruber, Psoriasis vulgaris) und Biopsien gesunder Haut. Die immunmarkierten, digitalisierten Serienschnitte wurden mithilfe des Bildanalysesystems Lucia (Nikon GmbH, Düsseldorf) im sog. Interlaced-Verfahren digitalisiert. Die dreidimensionalen Datensätze wurden segmentiert und an einer UNIX-Workstation visualisiert. Ergebnisse. Die dreidimensionale Rekonstruktion gibt Einblick in die Architektur der pathologischen und physiologischen Histologie, wie beispielsweise der charakteristischen Windung der Schweißdrüsenausführungsgänge unterhalb der Epidermis. In der Dermatoonkologie kann der punktuelle Durchbruch eines malignen Melanoms durch das unterliegende Infiltrat nachgewiesen werden. Schlussfolgerungen. Die Automatisierung zeigt neue Anwendungsmöglichkeiten der dreidimensionalen Rekonstruktion mittels digitalisierter Bilder mit einem hohen Maß an Objektivität bei standardisierten Bearbeitungs- und Färbeverfahren. Diese Darstellung ist ein hilfreicher Beitrag zur Diagnostik in der Dermatohistopathologie und Dermatohistologie.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 275 (1983), S. 95-99 
    ISSN: 1432-069X
    Keywords: Phagocytes ; Psoriatics ; Phagocytosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Twenty-one psoriatics as well as 24 normal healthy adults were studied by functional bone marrow scintigraphy using Tc-99m-labeled human serum albumin millimicrospheres (Tc-99m-HSA-MM). Functional bone marrow scintigraphy is an in vivo test system for the assessment of various functional properties of fixed phagocytes. Of proriatics who had no systemic drug treatment, 59% demonstrated peripheral extension of the bone marrow space, indicating hyperplasia of bone marrow phagocytes. This phenomenon could be observed only in one normal subject who was a high-performance sportsman. Of psoriatics treated with aromatic retinoid, 83% (n=6) demonstrated bone marrow extension, as did 100% (n=3) of psoriatics with cirrhosis of liver. The ‘capacity’ of bone marrow phagocytes to engulf Tc-99m-HSA-MM (‘uptake ratio’) was diminished in 34% of nontreated as well as 66% of psoriatics treated with aromatic retinoid. The phagocytic and proteolytic turnover of Tc-99m-HSA-MM in the bone marrow, spleen, and liver was found to be accelerated in 66% of nontreated psoriatics, normal (83%) or accelerated (17%) in psoriatics treated with aromatic retinoid, and considerably delayed in all of the psoriatics with cirrhosis of liver. Functional bone marrow scintigraphy proved to be an appropriate in vivo test system for revealing abnormalities of fixed phagocytes in psoriatics. Further more, therapeutic effects as well as the influences of preexisting disorders on different phagocyte populations can be assessed.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 271 (1981), S. 3-9 
    ISSN: 1432-069X
    Keywords: Corticosteroids ; Antiacanthogenic effect ; Carrier reaction ; Corticosteroide ; antiacanthogene Wirkung ; Grundlagen-effekt
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Anhand des beschriebenen Testverfahrens läßt sich der bekannte antiacanthogene Effekt topisch applizierter Corticosteroide exakt erfassen und quantifizieren. Eine 0,1% Clobetasol-17-propionat-Lösung induziert nach 28tägiger Behandlungsperiode einen antiacanthogenen Effekt von 27,5%, nach 84 Tagen eine Epithelverdünnung von 23,7% und nach 118 Tagen von 39%. Somit läßt sich aus den vorliegenden Ergebnissen keine Steroidtoleranz des Meerschweinchenepithels ableiten.
    Notes: Summary The antiacanthogenic effect of topical applied steroids is well known and maybe exactly assessed and quantified by means of the test procedure described. A 0.1% clobetasol-17-propionate solution induces an antiacanthogenic effect of 27.5% after a 28-day treatment period. After 84 days, the skin further treated with the corticosteroid shows an anticanthogenic effect of 23.7% and after 118 days of 39%. A steroid tolerance of epithelial layer on guinea pig skin cannot be derived from our results.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1468-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objective The decreased number of lymphocytes combined with the induction of apoptosis and necrosis seems to be the key mechanism of many phototherapeutic agents. The purpose of our study was to determine the regulating pathway, time course and dose dependence of UVA1- vs. UVB-induced cell death in human T lymphocytes.Methods In our study we applied an in vitro method using single-laser flow cytometry differentiating between intact (Annexin V–FITC−/PI−), apoptotic (Annexin V–FITC+/PI−) and necrotic T cells (Annexin V–FITC+/PI+) following UVA1 (340–400 nm) or UVB (280–320 nm) irradiation. Additionally, fluorescence microscopy of apoptotic cells was performed using acridine orange and ethidium bromide.Results Compared to DNA-binding fluorescent microscopy, the flow cytometric method revealed similar, but more precise, results concerning apoptosis and necrosis. Our data indicate that UVB irradiation exerts its effects by the induction of delayed apoptosis within 24–48 h. In contrast, UVA1 irradiation acts via the dose-dependent induction of immediate apoptosis and necrosis within 6 h.Conclusions Our findings demonstrate that UVA1 irradiation may effect structural and functional modifications leading to immediate initiation of apoptosis followed by early membrane rupture, whereas UVB irradiation leads to DNA damage followed by delayed apoptosis, obviously without initial membrane alteration.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Journal of the European Academy of Dermatology and Venereology 17 (2003), S. 0 
    ISSN: 1468-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A 21-year-old woman with an 11-year history of symmetric reticular atrophy on both cheeks, pre-auricular areas, and forehead is presented. The depressions gave a worm-eaten appearance to the skin. Histopathological findings from a biopsy specimen of lesional skin revealed an atrophic follicle. The connective tissue showed mild inflammation in perifollicular and perivascular distribution. The hair follicle was widely dilated and was filled with a keratotic plug. This case points out many of the outstanding clinical and histopathological features of atrophodermia vermiculata as described previously. Atrophodermia vermiculata appears to be one of a group of closely related conditions characterized by keratosis pilaris and atrophy of the skin.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Journal of the European Academy of Dermatology and Venereology 16 (2002), S. 0 
    ISSN: 1468-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    Journal of the European Academy of Dermatology and Venereology 15 (2001), S. 0 
    ISSN: 1468-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the European Academy of Dermatology and Venereology 10 (1998), S. 0 
    ISSN: 1468-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Topical glucocorticoids with improved benefit/risk ratio are of great interest in dermatology, but there are very few trials directly comparing the efficacy and side-effects of these new preparations. In our study the vasoconstrictor effect and side-effects of two of these new glucocorticoids were evaluated and blanching effect was determined by two-dimensional laser scanning.〈section xml:id="abs1-3"〉〈title type="main"〉MethodsIn a randomised, double blind intra-individual comparative trial, 10 subjects were treated with various glucocorticoids or drug-free vehicle. The test drugs were mometasone furoate (MF), methylprednisolone aceponate (MP) and hydrocortisone (OH-C). The preparations were tested for a period of 3 weeks with occlusion on the flexor side of the forearm. Skin thickness and vasoconstriction were determined using 20 MHz ultrasound scanning, laser Doppler scanning (LDS) and chromometry.〈section xml:id="abs1-4"〉〈title type="main"〉ResultsNo adverse effects were observed during the observation period. Only partial vasoconstriction occurred in most cases during the observation period. MP and MF produced maximal blanching between days 3 and 5 of treatment, while with OH-C clinically visible blanching did not occur. Ultrasound evaluation of skin thickness showed similar behaviour for all three steroids tested: there were no signs of skin atrophy in any of the cases. LDS evidenced hypoperfusion of a test area on the perfusion image in only a few patients and there were no significant differences between the steroids tested. On evaluation of vasoconstriction caused by the steroids tested using chromometry there was a significant difference between MF and OH-C on the L*a*b* scale (P 〈 0.005). Only at day 3 was a blanching effect caused by MP and MF demonstrable (a-value, P 〈 0.05).〈section xml:id="abs1-5"〉〈title type="main"〉ConclusionIn summary, the synthetic steroids MF and MP presented side-effects similar to those of OH-C but much greater vasoconstrictor effect; after an application period of over 5 days under occlusion a blanching effect in our model was not demonstrable by means of chromometry. Two-dimensional laser scanning offers no advantage in the evaluation of the blanching effect in comparison to one-dimensional laser fluxmetry (LDF). © 1998 Elsevier Science B.V.
    Type of Medium: Electronic Resource
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