[Analysis of factors influencing on Anisakis specific IgE antibodies]

Anisakis-specific IgE (AsIgE) was examined in 84 cases of acute urticaria (AU) and 100 cases of atopic dermatitis (AD). Gender, age, disease category (AU or AD) and serum IgE value of the patients were compared with AsIgE. Univariate analysis showed that there was significant correlation between age and AsIgE, and between serum IgE and AsIgE. Serum IgE was significantly higher in AD than in AU. Age was significantly higher in AU than in AD. AsIgE was positive value in 26 cases (31%) of AU and 25 cases (25%) of AD. There were no significant differences between them. In these cases, however, AsIgE was significantly higher in AU than in AD. Percentage of patients with high AsIgE value (> class 2) was significantly higher in AU (20 cases, 24%) than in AD (3 cases, 3%). Multivariate analysis using discriminant analysis and logistic regression analysis showed that the most influential factor on AsIgE was disease category (relative risk = 16.87), and the second was age (relative risk = 1.05). Serum IgE and gender were considered not to influence on AsIgE. It is possible that Anisakis or related antigens have something to do with urticaria in AU patients with high AsIgE value.