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Träfflista för sökning "WFRF:(Maibach R) srt2:(2010-2014)"

Sökning: WFRF:(Maibach R) > (2010-2014)

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1.
  • Peiser, M., et al. (författare)
  • Allergic contact dermatitis: Epidemiology, molecular mechanisms, in vitro methods and regulatory aspects
  • 2012
  • Ingår i: Cellular and Molecular Life Sciences. - 1420-682X .- 1420-9071. ; 69:5, s. 763-781
  • Forskningsöversikt (refereegranskat)abstract
    • Contact allergies are complex diseases, and one of the important challenges for public health and immunology. The German 'Federal Institute for Risk Assessment' hosted an 'International Workshop on Contact Dermatitis'. The scope of the workshop was to discuss new discoveries and developments in the field of contact dermatitis. This included the epidemiology and molecular biology of contact allergy, as well as the development of new in vitro methods. Furthermore, it considered regulatory aspects aiming to reduce exposure to contact sensitisers. An estimated 15-20% of the general population suffers from contact allergy. Workplace exposure, age, sex, use of consumer products and genetic predispositions were identified as the most important risk factors. Research highlights included: advances in understanding of immune responses to contact sensitisers, the importance of autoxidation or enzyme-mediated oxidation for the activation of chemicals, the mechanisms through which hapten-protein conjugates are formed and the development of novel in vitro strategies for the identification of skin-sensitising chemicals. Dendritic cell cultures and structure-activity relationships are being developed to identify potential contact allergens. However, the local lymph node assay (LLNA) presently remains the validated method of choice for hazard identification and characterisation. At the workshop the use of the LLNA for regulatory purposes and for quantitative risk assessment was also discussed. © The Author(s) 2011.
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  • Pontén, Ann, et al. (författare)
  • Patch testing with 2.0% (0.60 mg/cm(2) ) formaldehyde instead of 1.0% (0.30 mg/cm(2) ) detects significantly more contact allergy.
  • 2013
  • Ingår i: Contact Dermatitis. - : Federation of European Neuroscience Societies and Blackwell Publishing Ltd. - 0105-1873. ; 68:1, s. 50-53
  • Tidskriftsartikel (refereegranskat)abstract
    • Background.The currently used patch test concentration for formaldehyde is 1.0% (wt/vol) in water. However, clinical experience and previous studies suggest that 1.0% might be insufficient for detecting an optimized number of clinically relevant cases of contact allergy to formaldehyde. Objectives.To validate earlier patch test results for comparison of 1% (wt/vol) and 2% (wt/vol) formaldehyde in water, and to investigate co-reactivity with quaternium-15. Materials and methods.In 12 dermatology clinics, 3591 patients were routinely patch tested simultaneously with 2.0% (wt/vol) (0.60 mg/cm(2) ) and 1.0% (wt/vol) (0.30 mg/cm(2) ) formaldehyde. Micropipettes were used for delivering the exact dosage of the allergen. Results.Significantly more patients reacted to 2.0% formaldehyde than to 1.0% (3.4% versus 1.8%, p < 0.001). Overall, there were no sex differences between those reacting positively to 2.0% and 1.0%. Of 25 quaternium-15-positive patients, 4 (0.1%) reacted positively without reacting to formaldehyde. Conclusion.On the basis of the results of this multicentre study, as well as of previous studies, it can be suggested that 2.0% (wt/vol) in water formaldehyde should be used in routine patch testing in the baseline series.
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6.
  • Sosted, Heidi, et al. (författare)
  • Contact allergy to common ingredients in hair dyes
  • 2013
  • Ingår i: Contact Dermatitis. - : Federation of European Neuroscience Societies and Blackwell Publishing Ltd. - 0105-1873. ; 69:1, s. 32-39
  • Tidskriftsartikel (refereegranskat)abstract
    • Background p-Phenylenediamine (PPD) is the primary patch test screening agent for hair dye contact allergy, and approximately 100 different hair dye chemicals are allowed. Objectives To examine whether PPD is an optimal screening agent for diagnosing hair dye allergy or whether other clinically important sensitizers exist. Methods Two thousand nine hundred and thirty-nine consecutive patients in 12 dermatology clinics were patch tested with five hair dyes available from patch test suppliers. Furthermore, 22 frequently used hair dye ingredients not available from patch test suppliers were tested in subgroups of approximate to 500 patients each. Results A positive reaction to PPD was found in 4.5% of patients, and 2.8% reacted to toluene-2,5-diamine (PTD), 1.8% to p-aminophenol, 1% to m-aminophenol, and 0.1% to resorcinol; all together, 5.3% (n=156). Dying hair was the most frequently reported cause of the allergy (55.4%); so-called temporary henna' tattoos were the cause in 8.5% of the cases. p-Methylaminophenol gave a reaction in 20 patients (2.2%), 3 of them with clinical relevance, and no co-reaction with the above five well-known hair dyes. Conclusions Hair dyes are the prime cause of PPD allergy. PPD identifies the majority of positive reactions to PTD, p-aminophenol and m-aminophenol, but not all, which justifies additional testing with hair dye ingredients from the used product.
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