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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 145 (2001), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Avoidance of allergens has been shown to be of benefit in patients with atopic asthma sensitized to indoor allergens. In atopic dermatitis, there is so far little information about the effect of house dust mite elimination strategies. Objectives We therefore performed a randomized controlled study of house dust mite control in patients with this disease. Methods Twenty adult patients with moderate to severe atopic dermatitis were included. Inclusion criteria were a positive RAST to house dust mite antigen (CAP class 〉 3) and a concentration of 〉 2 µg g−1 of the house dust mite antigen Der p1 in the patient's mattress dust. Patients were randomized to either the active treatment group (allergen-impermeable mattress encasing, acaricide spray containing tannic acid and benzylbenzoate) or a control group (allergen-permeable encasing, spray containing water and traces of ethanol). Severity of disease was estimated every 2 months by an established score (SCORAD), and eosinophil cationic protein (ECP) in the serum was determined by enzyme-linked immunosorbent assay. Furthermore, the use of topical steroids was quantified. Patients assessed daytime pruritus and pruritus-induced sleeplessness weekly on a visual analogue scale. The study lasted 1 year. Results At the end of the study, the active treatment group showed a statistically significant reduction in Der p1 exposure as compared with the control group. However, when comparing the change from the start to the end of the study, there was no statistically significant difference between active treatment and control groups as measured by the SCORAD score and by ECP levels in the serum. Some patients in the active treatment group reported less pruritus-induced sleeplessness, but there was no statistically significant difference between the two treatment groups. Conclusions For adult patients with atopic dermatitis it was shown that 1 year of house dust mite avoidance reduced the allergen exposure, but an improvement of overall disease activity was not demonstrated.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 135 (1996), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    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
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    British journal of dermatology 148 (2003), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Summary Background Atopic dermatitis (AD) and psoriasis are genetically determined inflammatory skin disorders characterized by abnormal cytokine production. From association studies there is evidence that functionally relevant cytokine gene polymorphisms contribute to the genetic basis of psoriasis. Association studies in AD have mostly been limited to polymorphisms of T-helper 2-type cytokines, which dominate in acute AD lesions. Unexpectedly, the results of recent genome scans indicate linkage of AD to psoriasis susceptibility loci. Therefore, AD may also be influenced by genes that modulate cutaneous inflammation independently from atopic mechanisms. Objectives To investigate further the role of cytokine gene polymorphisms in AD. Methods Polymorphisms in the genes encoding tumour necrosis factor-α (TNFA−238 G/A, −308 G/A), interleukin (IL)-1β (IL1B−511 T/C, +3953 T/C), IL-6 (IL6−174 C/G), IL-10 (IL10−1082 A/G) and the IL-1 receptor antagonist (IL1RN intron 2) were investigated in German patients with AD (n = 94) and in healthy nonatopic individuals (n = 214) by polymerase chain reaction-based methods and direct cycle sequencing. Results No association was found between AD and any of the polymorphisms analysed. This is in contrast to the recently described association between psoriasis and the TNFA−238 and IL1B−511 polymorphisms. Conclusions Our data indicate that cytokine gene polymorphisms may act as specific markers of inflammatory skin diseases rather than contribute to a general disposition towards cutaneous inflammation.
    Type of Medium: Electronic Resource
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  • 5
    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: Summary Background Several laboratory markers have been described to correlate positively with disease activity of atopic dermatitis (AD). These include soluble adhesion molecules and eosinophil granular proteins. Although the correlation of these parameters with the severity and extent of skin involvement has been repeatedly studied in the past, no systematic investigation has been performed over a lengthy period of time. In addition, no subjective disease parameters recorded by the patient have been included in studies dealing with disease activity. Objectives To assess the validity of different objective and subjective parameters [soluble E-selectin (sE-selectin), soluble vascular cell adhesion molecule-1 (sVCAM-1), eosinophil cationic protein (ECP), urinary nitrate excretion (reflecting endogenous nitric oxide formation) and the patients' impressions of pruritus, sleeplessness and skin status] as markers of AD disease activity. Methods Twenty patients were examined for 1 year and their skin status was evaluated by an established score (SCORAD). sE-selectin, sVCAM-1 and ECP were analysed by commercial test kits. Urinary nitrate concentration was measured by gas chromatography-mass spectrometry. The subjective parameters, pruritus, sleeplessness and impression of skin status, were recorded by the patients on a visual analogue scale. Results In this long-term trial, only sE-selectin and the subjective parameters showed a statistically significant correlation with the SCORAD score. Conclusions Our data indicate that basic clinical scoring remains a most effective and relevant method of recording skin disease activity in AD.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Copenhagen : Munksgaard International Publishers
    Allergy 55 (2000), S. 0 
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Copenhagen : Blackwell Publishing Ltd
    Allergy 54 (1999), S. 0 
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Copenhagen : Munksgaard International Publishers
    Allergy 56 (2001), S. 0 
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1440
    Keywords: Atopic dermatitis ; Dermatophagoides pteronyssinus ; T helper 1 cells ; T helper 2 cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Until recently it was believed that the T cell response of atopic dermatitis patients challenged with inhalant allergens originates almost exclusively and specifically from Th2 cells capable of secreting an abundance of interleukin (IL)-4 while producing no interferon (IFN)-γ. To reevaluate this concept in a large cohort of atopic dermatitis patients we established 177 CD4+ T cell clones (45 of which showed specificity for house dust mite antigen) from the peripheral blood (n=76), naturally occurring skin lesions (n=40), and allergen-exposed skin (n=61) of different patients. These clones were examined for their capacity to secrete IL-4 and IFN-γ upon mitogenic stimulation. Moreover, 20 of these T cell clones were investigated for the synthesis of transcripts for IL-5, another Th cytokine. Our results indicate that the majority (52–100%) of allergen-specific T cells in both skin and blood of atopic individuals failed to exhibit a restricted cytokine secretion pattern and thus were classified as Th0 cells. House dust mite antigen specific T cells displaying a restricted secretion pattern (n=16) were either of the Th1 or the Th2 type. Specific Th2 cells, however, were found almost exclusively in allergen patch test reactions, indicating that the Th2 differentiation pathway is seen preferentially in allergen-exposed skin. The cytokine secretion profile of T cell clones obtained from naturally occurring skin lesions showed similarity to those of patch test lesion, suggesting that the patch test represents a useful model to investigate the pathogenesis of atopic dermatitis.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-1440
    Keywords: Key words Atopic dermatitis ; Dermatophagoides pteronyssinus ; T helper 1 cells ; T helper 2 cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Until recently it was believed that the T cell response of atopic dermatitis patients challenged with inhalant allergens originates almost exclusively and specifically from Th2 cells capable of secreting an abundance of interleukin (IL)-4 while producing no interferon (IFN)-γ. To reevaluate this concept in a large cohort of atopic dermatitis patients we established 177 CD4+ T cell clones (45 of which showed specificity for house dust mite antigen) from the peripheral blood (n=76), naturally occurring skin lesions (n=40), and allergen-exposed skin (n=61) of different patients. These clones were examined for their capacity to secrete IL-4 and IFN-γ upon mitogenic stimulation. Moreover, 20 of these T cell clones were investigated for the synthesis of transcripts for IL-5, another Th cytokine. Our results indicate that the majority (52–100%) of allergen-specific T cells in both skin and blood of atopic individuals failed to exhibit a restricted cytokine secretion pattern and thus were classified as Th0 cells. House dust mite antigen specific T cells displaying a restricted secretion pattern (n=16) were either of the Th1 or the Th2 type. Specific Th2 cells, however, were found almost exclusively in allergen patch test reactions, indicating that the Th2 differentiation pathway is seen preferentially in allergen-exposed skin. The cytokine secretion profile of T cell clones obtained from naturally occurring skin lesions showed similarity to those of patch test lesion, suggesting that the patch test represents a useful model to investigate the pathogenesis of atopic dermatitis.
    Type of Medium: Electronic Resource
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