Microarray and allergenic activity assessment of milk allergens

Area of Science:

• Immunology
• Allergy Research
• Food Science

Background:

• Cow's milk allergy affects about 2.5% of infants.
• Limited data exists on individual cow's milk allergen activity.

Purpose of the Study:

• To determine IgE reactivity frequency and allergenic activity of specific cow's milk allergens.
• To correlate allergen profiles with clinical symptoms and allergy persistence.

Main Methods:

• Utilized a microarray with natural and recombinant cow's milk allergens.
• Employed IgE reactivity profiling with sera from 78 cow's milk-sensitized individuals.
• Assessed allergenic activity using rat basophil leukaemia (RBL) cells.

Main Results:

• Microarray and RBL assays identified IgE recognition patterns and allergenicity.
• RBL assay differentiated clinical severity and allergy persistence.
• Distinct allergen profiles were observed in individuals with varying reactions and outcomes.

Conclusions:

• Component-resolved testing offers enhanced diagnostic insights for cow's milk allergy.
• This approach may inform future prophylactic and therapeutic strategies.
• Microarray and RBL assays are valuable tools for understanding cow's milk allergy.