Research Article

IgE, IgG1, and IgG4 Reactivity to Dermatophagoides pteronyssinus Glycosylated Extract in Allergic Patients

Figure 2

Levels of specific IgE (a), IgG1 (b), and IgG4 (c) to the D. pteronyssinus (Dpt) crude extract and ConA-unbound and ConA-bound fractions, expressed in ELISA index (EI) in sera from 95 patients with positive SPT to D. pteronyssinus (DP+ group) and 92 nonallergic (NA group) subjects. Boxes indicate the median with minimum and maximum values. The dashed line represents the positivity threshold value (EI = 1.2). Relative numbers of sera with EI above the positivity threshold value are also indicated (%). Significant differences in the EI are reported in indicative bars. p < 0.05; p < 0.001.

(a) IgE
(b) IgG1
(c) IgG4