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  • 11
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 153 (2005), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 152 (2005), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The current understanding of the function of natural killer (NK) T cells in innate immunity and their potential to control acquired specific immunity, as well as the remarkable efficacy of antitumour necrosis factor-α biological treatments in psoriasis, forces us to refine the current T-cell hypothesis of psoriasis pathogenesis, and to give credit to the role of innate immunity. Psoriasis might be envisioned to be a genetically determined triggered state of otherwise dormant innate immunity. This aggravated state of innate immunity is represented by the activity of NK T cells, dendritic cells, neutrophils and keratinocytes, leading to the recruitment and activation of preferentially type 1 T cells, possibly in an antigen-independent way. Keratinocytes in psoriasis then are sensitive to the effects of T-cell activation and cytokine production, interferon (IFN)-γ, by responding with psoriasiform hyperplasia. The chronic inflammation of psoriatic lesions suggests that this might be due to a deficiency in downregulation processes (e.g. a defect in the regulatory T-cell repertoire) and/or the persistence of an unknown trigger resulting in an exaggerated innate immune response.
    Type of Medium: Electronic Resource
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  • 13
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background  Topical corticosteroids are the usual treatment for atopic dermatitis (AD) in children but can have side-effects.Objectives  This study compared the efficacy and safety of 0·03% tacrolimus ointment applied once or twice daily over a 3-week period with the twice daily application of 1% hydrocortisone acetate (HA) ointment in children with moderate to severe AD.Patients and methods  Patients applied ointment daily to all affected body surface areas. The primary study endpoint was the percentage change in the modified Eczema Area and Severity Index (mEASI) between baseline and treatment end.Results  Six hundred and twenty-four patients, aged 2–15 years, applied 0·03% tacrolimus ointment once daily (n = 207), twice daily (n = 210) or 1% HA twice daily (n = 207). By the end of treatment, application of 0·03% tacrolimus ointment both once or twice daily resulted in significantly greater median percentage decreases in mEASI (66·7% and 76·7%, respectively) compared with 1% HA (47·6%; P 〈 0·001). Furthermore, the median percentage decrease in mEASI was significantly greater for patients applying 0·03% tacrolimus twice daily compared with once daily (P = 0·007). Patients with severe AD benefited especially from twice daily application of 0·03% tacrolimus ointment compared with once daily application (P = 0·001). Transient mild to moderate skin burning occurred significantly more often in the 0·03% tacrolimus groups (P = 0·028) but resolved in most cases within 3–4 days. Laboratory parameters showed no clinically relevant changes.Conclusions  0·03% tacrolimus ointment applied once or twice daily is significantly more efficacious than 1% HA in treating moderate–severe AD in children. Twice daily application of 0·03% tacrolimus ointment results in the greatest improvement in mEASI, and is especially effective in patients with severe baseline disease.
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 147 (2002), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: It is proposed to introduce the term ‘atopiform dermatitis’ to describe patients who have dermatitis with many of the characteristics of true atopic dermatitis, but who are not atopic. Atopy should be defined as the genetically determined and environmentally influenced syndrome in which the primary immunological abnormality is the production of allergen-specific IgE. It is suggested that by making a distinction between atopiform dermatitis and true atopic dermatitis, subsequent genetic, immunological and therapeutic studies will be improved. Furthermore, atopiform dermatitis would be a more appropriate diagnosis for the atopic dermatitis-like skin diseases that may occur in syndromes such as phenylketonuria, Schwachman's syndrome, Wiskott–Aldrich syndrome, Netherton's syndrome, Job's syndrome, selective IgA deficiency, agammaglobulinaemia and ataxia telangiectasia. In contrast to patients with true atopy, patients with atopiform dermatitis can logically be advised that allergen avoidance is not required, as they have no allergen-specific IgE.
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 137 (1997), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We systematically reviewed the evidence concerning the ability of five systemic treatments to induce remission in patients with severe psoriasis: ultraviolet B (UVB), photochemotherapy (PUVA), methotrexate (MTX), retinoids (RET) and cyclosporin A (CYA). An elaborate literature search was performed, the validity of studies was assessed, and data were analysed. In total, 89, 193, 101, 155 and 127 studies (n=665) concerning UVB, PUVA, MTX, RET and CYA were found. The exclusion rate was high, mainly because of concomitant antipsoriatic therapy, outdated dosages or inadequate documentation. No study on MTX could be included. A total of 129 patient series was included in the analysis, reporting on 13,677 patients, Study size-weighted averages of the proportions of patients with clearance and good, moderate and poor response (defined, respectively, as 95–100%, 75–100% and 50–75% and 〈50% reduction in the outcome measurements as compared with baseline) were calculated. PUVA therapy was associated with the highest average proportion of patients with clearance (70%) and the highest proportion of patients with good response (83%), followed by UVB (68%) and CYA (64%). Incidence of side-effects per week was highest in the RET group and lowest in the phototherapy groups. This review may provide a basis for the development of guidelines for the treatment of psoriasis. Trials comparing oral modalities applied according to currently accepted standards should also be carried out.
    Type of Medium: Electronic Resource
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  • 16
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 136 (1997), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Although the use of vitamin D analogues in the treatment of psoriasis has been an important new development, the mechanisms of action of these drugs are not fully understood. Psoriasis results from hyperproliferation of keratinocytes, and various studies attribute a crucial role to the locally infiltrating T lymphocytes. In an attempt to add to the understanding of the mechanisms of calcitriol therapy, we determined the effect of this drug on T cells by studying its effect on proliferation and on the production of various cytokines by T-cell clones prepared from psoriatic skin after non-specific activation with the combination of phytohaemagglutinin (PHA) and phorbol myristate acetate (PMA). The addition of increasing doses (10-9–10-5mol/1) of caleitriol to these T cells resulted in a dose-dependent inhibition in lymphocyte proliferation and in production of the type 1 cytokines IFN- γ and IL-2. the type 2 cytokines IL-4 and IL-5. The general cytokines TNF-α and GM-CSF were not significantly inhibited. These data suggest that calcitriol is involved in the treatment of psoriasis via inhibition of the expansion, and cytokine production, of skin-infiltrating T lymphocytes.
    Type of Medium: Electronic Resource
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  • 17
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: An open, randomized trial was performed to determine the optimal dosage schedule with regard to the efficacy and safety of cyclosporin in severe atopic dermatitis. The study also provided clinical experience with regard to the efficacy and safety of long-term cyclosporin treatment. During a 2-month dose-finding period. 78 patients with severe, long-standing atopic dermatitis received cyclosporin at a dose of either 5 mg/kg per day, decreasing to 3 mg/kg per day (Group A), or 3 mg/kg per day, increasing to 5 mg/kg per day (Group B). Patients were maintained on their optimal dose for a further 10 months. Patients in Group A showed a significantly greater improvement in efficacy parameters over the first 2 weeks than with patients in Group B, but as the dose was decreased in Group A and increased in Group B, these differences were minimized. After 1 year, cyclosporin showed an efficacy of 59.8% in Group A and 51.7% in Group B, assessed by a severity score. Assessed in terms of an area score, these figures were 48.7% and 40%, respectively. Cyclosporin demonstrated a good safety profile during long-term treatment and was generally well tolerated. The lower starting dosage was not associated with higher dropout rates. This study showed no differences in efficacy or adverse events between the two dosage schedules in long-term treatment.
    Type of Medium: Electronic Resource
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  • 18
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary Topical photochemotherapy with psoralen and its derivatives 4.5′,8-trimethylpsoralen (TMP) and 8-methoxypsoralen (8-MOP), with UVA irradiation, was evaluated with regard to minimum phototoxic dose, concentration, timing of UVA irradiation and systemic and local side-effects, in healthy volunteers. Psoralen (0.005%) in aqueous gel was found to be superior to TMP and 8-MOP in aqueous gel. No hyperpigmentation was seen after topical PUVA treatment with psoralen in aqueous gel. Patients with plaque-type psoriasis (n = 7), palmoplantar psoriasis (n = 7) and hyperkeratotic eczema (n = 2) were treated. Topical PUVA therapy was effective in most psoriasis patients, without the occurrence of local or systemic side-effects. Moreover, hyperkeratotic eczema patients who did not respond to conventional therapy showed partial remission. These results indicate that topical PUVA therapy with psoralen in aqueous gel is a useful therapeutic modality for treatment of psoriasis patients, and patients with recalcitrant dermatoses such as palmoplantar psoriasis and hyperkeratotic eczema.
    Type of Medium: Electronic Resource
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  • 19
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 130 (1994), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary We report a comparative study of the patch-test results obtained with a corticosteroid series, added to the standard series, in two centres, one in Belgium and the other in the Netherlands. The frequencies of positive reactions to the corticosteroids differed considerably between the two centres, and we suggest several reasons for this.
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 131 (1994), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We report a case of naevus mucinosus, a recently described condition. Clinically, the lesions presented as unilateral, multiple, firm, 3–5-mm-diameter, coalescent papules in a linear arrangement on the back of a 23-year-old man. Histologically, large amounts of acid mucoploysaccharides (proteoglycans) were demonstrated in the superficial dermis. As far as we are aware, this is the first report of the onset of naevus mucinosus in an adult. Naevus mucinosus appears to be a distinct type of connective tissue naevus which is characterized by an increase in proteoglycans.
    Type of Medium: Electronic Resource
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