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  • 1
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 146 (2002), S. 0 
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 148 (2003), S. 0 
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    International journal of dermatology 44 (2005), S. 0 
    ISSN: 1365-4632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: A 44-year-old white woman was admitted to our hospital for the investigation of many roundish, pale-colored, nodular lesions of different sizes, ranging from a few millimeters to some centimeters, symmetrically grouped on the shoulders (〈link href="#f1"〉Fig. 1), trunk, upper limbs, and abdomen. The lesions first appeared at 20 years of age on the upper chest around the clavicular region, and thereafter gradually increased on the trunk and upper limbs; they were completely asymptomatic, appearing on normal skin without a previous history of inflammation and/or trauma. No scarring or atrophy was evident. The smaller lesions exhibited a miliaria-like shape, being evident in particular on stretching of the skin; the larger ones showed a firm-elastic density, no adhesion to surrounding tissue, and deep localization in the skin. No hypopigmented macules or sebaceous adenoma-like lesions were present. Skin biopsy of a nodular lesion from the right shoulder revealed a normal epidermis and a dermis filled with bundles of dense and coarse collagen fibers (〈link href="#f2"〉Fig. 2). Elastic fibers appeared thin and decreased in number under Verhoeff–van Gieson stain (〈link href="#f3"〉Fig. 3). A diagnosis of cutaneous collagenoma was proposed. Routine laboratory investigations were within the normal range. Chest and skeleton (hands, pelvis, and long bones) X-ray, electrocardiogram, and echocardiogram showed no abnormality.〈figure xml:id="f1"〉1〈mediaResource alt="image" href="urn:x-wiley:00119059:IJD1509:IJD_1509_f1"/〉Nodular papules localized on the right shoulder〈figure xml:id="f2"〉2〈mediaResource alt="image" href="urn:x-wiley:00119059:IJD1509:IJD_1509_f2"/〉Histology of a lesion taken from the right shoulder. The picture demonstrates dense and coarse collagen bundles (hematoxylin and eosin stain; original magnification, × 200)〈figure xml:id="f3"〉3〈mediaResource alt="image" href="urn:x-wiley:00119059:IJD1509:IJD_1509_f3"/〉Elastic fibers are clearly diminished in number, thin, and fragmented (Verhoeff–van Gieson stain; original magnification, × 400)In order to evaluate a possible familial cutaneous collagenoma, the 19-year-old son of the patient was also examined. He had a 3-month history of numerous, asymptomatic, skin-colored nodules, ranging from 0.5 to 2 cm, on the upper back. Skin biopsy of a nodular lesion showed the same features as observed in the mother's biopsy. Routine blood and serum tests and X-ray examinations were within normal limits. Electrocardiogram revealed an early R-wave transition, and echocardiogram showed a left ventricular dilation with thickened aorta; aortic steno-insufficiency was diagnosed under cardiologic examination. The diagnosis of familial collagenoma was confirmed, and similar cutaneous lesions were found in the mother's grandmother and aunt.
    Materialart: Digitale Medien
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  • 4
    Digitale Medien
    Digitale Medien
    Amsterdam : Elsevier
    Economics of Education Review 12 (1993), S. 177-181 
    ISSN: 0272-7757
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Pädagogik , Wirtschaftswissenschaften
    Materialart: Digitale Medien
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  • 5
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    Clinical and experimental dermatology 30 (2005), S. 0 
    ISSN: 1365-2230
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Mucous membrane pemphigoid is a rare, chronic autoimmune disease characterized by subepidermal blistering and scarring, predominantly affecting mucous membranes. Ocular involvement frequently occurs and often represents the only manifestation of the disease. We describe a 62-year-old woman with a bilateral 18-month duration of conjunctival hyperaemia, associated with erythema and oedema of the eyelids, lacking any typical ocular signs of mucous membrane pemphigoid such as subconjuctival fibrosis and scarring. Histology was not significant. Direct immunofluorescence of the conjunctiva showed IgG, IgA and complement deposition along the basement membrane zone. Immunoprecipitation analysis of affinity purified laminin-5 revealed a band consistent with the β3 chain of laminin-5. This represents the first case of pure ocular mucous membrane pemphigoid associated with antilaminin-5 antibodies.
    Materialart: Digitale Medien
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  • 6
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 148 (2003), S. 0 
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Summary Background Pemphigoid gestationis (PG), also known as herpes gestationis, is a rare autoantibody-mediated bullous disease, usually associated with pregnancy and the postpartum period. However, infiltrating cells have recently been suggested to also contribute to the pathogenesis of cutaneous lesions. Objectives To evaluate the immunophenotype of T cells infiltrating the PG lesional skin and their prevalent cutaneous cytokine expression, as well as the presence and distribution of mast cells, eosinophils and neutrophils. Methods We performed an immunohistochemical study with a large panel of monoclonal antibodies to CD3, CD4, CD8, HLA-DR, CD25, myeloperoxidase, tryptase, eosinophil cationic protein EG2, human interleukin (IL)-2, -4, -5, -8, interferon (IFN)-γ, and granulocyte–macrophage colony-stimulating factor using the alkaline phosphatase–antialkaline phosphatase procedure on lesional skin of seven patients with PG. Skin from four subjects with pruritic urticarial papules and plaques of pregnancy and three additional healthy donors were used as controls. Results The findings indicate that there is a T-cell population with a prevalent T-helper (Th) 2 phenotype in the lesional skin of PG subjects. We also found a number of eosinophils and neutrophils with clear signs of activation. Conclusions These data suggest that an inflammatory infiltrate is involved in the production of PG bullous lesions. In particular, we assume that the Th2 cells might be implicated in the very early stages of autoimmune response and may exercise a broad influence in blister formation in this disease.
    Materialart: Digitale Medien
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  • 7
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 142 (2000), S. 0 
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background  Pseudopelade of Brocq (PB) is an acquired progressive cicatricial alopecia which is characterized by some distinctive clinical features. It may represent either a distinct entity, i.e. an idiopathic primary scarring alopecia, or the end stage of various forms of scarring alopecia such as discoid lupus erythematosus (DLE) or lichen planopilaris (LPP).Objectives  The aim of the study was to evaluate a set of patients with a clinically defined PB, to ascertain whether their PB was idiopathic or secondary, and then to study the phenotype of the inflammatory infiltrate and the presence of any fibrogenic and antifibrogenic cytokines to identify idiopathic or secondary forms in more detail.Methods  Twelve female patients with PB were studied by means of histology, direct immunofluorescence (DIF) and immunohistochemistry, by using monoclonal antibodies to cell markers (lymphocyte subtypes, Langerhans cells, macrophages, fibroblasts, mastocytes and activation markers) and fibrogenic and antifibrogenic cytokines.Results  Using histology and DIF, we diagnosed two cases as DLE and three cases as LPP. Seven cases had nonspecific histology or DIF appearances and were classified as noncharacterized pseudopelade (NCPB). Two major phenotypic patterns of dermal infiltrate were identified by immunohistochemistry. These were: (i) a conspicuous infiltrate of CD3+ cells with a high CD4+/CD8+ ratio, variable numbers of macrophages, mast cells and fibroblasts always fewer than lymphocytes; (ii) an infiltrate of CD3+ cells with variable CD4+/CD8+ ratio and conspicuous amounts of macrophages, mast cells and fibroblasts, more numerous than infiltrating lymphocytes. The first pattern was typical of DLE and LPP, the second one was typical of NCPB. Fibrogenic cytokines were observed in all cases, but basic fibroblastic growth factor (bFGF) and transforming growth factor (TGF)-β were more strongly expressed in NCPB. Interferon (IFN)-γ was found in LPP.Conclusions  In our PB patients we identified five of 12 secondary PB and seven of 12 idiopathic PB by means of histology and DIF. The phenotypic pattern of infiltration allowed us to further differentiate secondary (richer in lymphocytes) from idiopathic PB (richer in resident cells). The pattern of cytokine expression showed the presence of fibrogenic molecules (interleukins 4 and 6, bFGF and TGF-β) in all cases, suggesting the involvement of mechanisms mediated by T-helper 2 and 3 cytokines in PB.
    Materialart: Digitale Medien
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  • 9
    Digitale Medien
    Digitale Medien
    Oxford, UK : Blackwell Science, Ltd
    International journal of dermatology 41 (2002), S. 0 
    ISSN: 1365-4632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: AbstractBackground  Pseudopelade of Brocq (PB) is a permanent progressive scarring alopecia characterized by numerous alopecic patches localized only in the scalp, that tend to coalesce into larger, irregular plaques with policyclic borders. PB can be considered either the final atrophic stage of several scarring disorders such as lichen planus pilaris (LPP) and discoid lupus erythematosus (DLE) (secondary PB) or an autonomous disease (primary PB).The aim of this study was to assess the incidence of primary vs. secondary PB by a combined histopathological and immunopathological study in a series of patients who fulfillled the clinical diagnostic criteria for PB set forth by Braun Falco et al.Methods  We studied 33 patients (5 males and 28 females, whose age ranged from 24 to 75 years). The duration of the disease (from onset to biopsy) ranged from 3 months to 8 years. Serum samples were tested for circulating auto-antibodies (antinuclear antibodies anti ENA, anticentromere, anti-Scl70, antithyroid, antigastric parietal cells) circulating immune complexes, total and single fraction (C3, C4) complement activity. The skin biopsies taken from the active advancing margin of the more recent alopecic patch were bisected vertically, one was sent for histopathological examination, and the other for the immunofluorescence studies.Results  In all patients the serum tests above were found to be negative or normal. Histopathologically, 11 biopsies (33.3%) displayed findings typical for LPP whereas seven cases (21.2%) showed typical DLE features. In the remaining 15 cases (45.5%) histopathological findings were not suggestive of any specific dermatosis. DIF investigations showed findings typical of LPP in six cases (18.1%) and typical of DLE in seven cases (21%). In three cases we did not find findings typical of LPP, DLE, or any other specific dermatitis. In 11 cases no immunological deposits could be detected and therefore were classified as negative.Conclusion  In conclusion, PB is a type of scarring alopecia of the scalp associated with a peculiar clinical presentation and evolution, which cannot be considered an autonomous nosologic entity because in 66.6% of patients it is the end stage of other inflammatory chronic diseases such as LPP and DLE. It is conceivable that even in those cases in which the histopathological and immunopathological findings did not allow for a specific diagnosis, LPP and DLE were also involved. It is noteworthy that in our study the histopathological and the immunopathological examinations did not conflict and often the results were even coincidental, thus confirming the compatibility of the combined histo-immunopathological approach in the diagnostic evaluation of PB.
    Materialart: Digitale Medien
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  • 10
    ISSN: 1432-0428
    Schlagwort(e): Non-esterified fatty acids ; plasma insulin ; acute insulin response ; respiratory quotient
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Our study investigates short- and long-term effects of infusion of non-esterified fatty acids (NEFA) on insulin secretion in healthy subjects. Twelve healthy individuals underwent a 24-h Intralipid (10% triglyceride emulsion) infusion at a rate of 0.4 ml/min with a simultaneous infusion of heparin (a bolus of 200 U followed by 0.2 U/min per kg body weight). After an overnight fast (baseline), at 6 and at 24 h of Intralipid infusion and 24 h after Intralipid discontinuation (recovery test), all subjects underwent an intravenous glucose tolerance test (iv-GTT) (25 g of glucose/min). Intralipid infusion caused a threefold rise in plasma NEFA concentrations with no difference between the 6- and the 24-h concentrations. Compared to baseline acute insulin response (AIR) (AIR=63±8 mU/l), short-term (6-h) Intralipid infusion was associated with a significant increase in AIR (86±12 mU/l p〈0.01); in contrast, long-term (24-h) Intralipid delivery was associated with inhibition of AIR (31±5 mU/l) compared to baseline (p〈0.001) and to the 6-h (p〈0.03) triglyceride emulsion infusion. Intralipid infusion was associated with a progressive and significant decline in respiratory quotient (RQ). A positive correlation between changes in fasting plasma NEFA concentrations and AIR at the 6-h infusion (r=0.89 p〈0.001) was found. In contrast, at the end of the Intralipid infusion period, changes in plasma NEFA concentrations and AIR were negatively correlated (r=−0.87 p〈0.001). The recovery test showed that fasting plasma NEFA concentrations, RQ and AIR had returned to baseline values. In the control study (n=8) 0.9% NaCl infusion did not mimick the effect of Intralipid. In conclusion, our study demonstrates that short- and long-term exposures of beta cells to high plasma NEFA concentrations have opposite effects on glucose-induced insulin secretion.
    Materialart: Digitale Medien
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