Patch Testing With Methylchloroisothiazolinone/Methylisothiazolinone Using a New Diagnostic Mix--A Multicenter Study From the International Contact Dermatitis Research Group.

Autor: Isaksson, Marléne, Andersen, Klaus E., Elsner, Peter, Chee-Leok Goh, Gonçalo, Margarida, Goossens, An, Ljubojevic Hadzavdic, Suzana, Pratt, Melanie, Pailin Puangpet, Sasseville, Denis, Verma, Kaushal, Bruze, Magnus
Zdroj: Dermatitis (Mary Ann Liebert, Inc.); Jul/Aug2021, Vol. 32 Issue 4, p220-224, 5p
Abstrakt: Background: In the early 1980s, a preservative containing a mixture of methylchloroisothiazolinone (MCI) and methylisothiazolinone (MI) in a ratio of 3:1 was introduced. This mixture (mix) has been patch tested at 100 ppm (0.01%) worldwide and at 200 ppm (0.02%) in Sweden since 1986 and also in the European baseline series since 2014. Objective: A new aqueous mix of MCI 0.015% and MI 0.2% was compared with patch testing with the 2 aqueous baseline preparations of MCI/MI 0.02% and MI 0.2%. Methods: Four thousand three hundred ninety-seven patients with dermatitis in 12 International Contact Dermatitis Research Group dermatology departments from 3 continents were patch tested simultaneously with the 3 preparations. Results: The frequency of positive patch tests to the allergens varied between 0% and 26.7% in the 12 test centers. The new mixture MCI/MI 0.215% in aqua (aq) detected significantly more patients with MCI/MI allergy than both MCI/MI 0.02% aq (P < 0.001) and MI 0.2% aq (P < 0.001) alone and combined. Conclusions: The results favor replacing the preparations MCI/MI 0.02% aq and MI 0.2% aq with the mixture MCI/MI 0.215% aq in the International Contact Dermatitis Research Group baseline series. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index