Glove-derived foreign proteins induce allergen-specific IgE in a mouse model

Area of Science:

• Immunology
• Materials Science
• Allergology

Background:

• Medical gloves often contain natural rubber latex (NRL) proteins, but foreign proteins like soy and casein are used as substitutes.
• Concerns exist regarding the allergenicity and immunogenicity of these foreign proteins in medical gloves.

Purpose of the Study:

• To compare the allergenic and immunogenic potential of soy and casein proteins against NRL proteins.
• To investigate sensitization risks associated with foreign proteins in medical gloves using a murine model.

Main Methods:

• BALB/c mice were immunized with extracts from NRL gloves, soy, and casein.
• Allergen-specific IgE and IgG(1) responses were measured.
• A microarray with recombinant allergens was used for detailed IgE detection.

Main Results:

• NRL, soy, and casein extracts induced significant allergen-specific IgE and IgG(1) responses.
• NRL induced the highest IgE levels on average, but soy and casein also elicited substantial responses in some mice.
• Specific IgE against kappa-casein was detected in mice exposed to NRL glove extract, indicating cross-sensitization potential.

Conclusions:

• Foreign proteins like soy and casein in medical gloves can induce significant allergic responses.
• Substitution of NRL proteins may lead to new or increased sensitization to finished glove products.
• Further research is needed to fully understand the clinical implications of foreign protein sensitization from medical gloves.