Specific immunoglobulin E in patients with immediate persulfate hypersensitivity.

Area of Science:

• Allergy and Immunology
• Dermatology
• Occupational Health

Background:

• Persulfate salts are common ingredients in hair bleaches and can trigger various adverse reactions.
• Immediate hypersensitivity mechanisms to persulfates, such as urticaria and asthma, have not been fully elucidated.
• Previous research indicated a potential role for immunoglobulin E (IgE) in persulfate allergy, but evidence was limited.

Purpose of the Study:

• To investigate the immunological mechanisms behind immediate hypersensitivity reactions to persulfate salts.
• To evaluate the diagnostic utility of prick testing, skin application, immunospot, and radioallergosorbent test (RAST) in identifying persulfate allergy.
• To determine if IgE antibodies are involved in immediate reactions to ammonium and potassium persulfate.

Main Methods:

• Conducted prick testing with 2% ammonium and potassium persulfate solutions on 138 patients.
• Performed open skin application tests on patients with positive prick tests.
• Utilized immunospot assays and RAST to detect specific IgE binding to persulfate-HSA conjugates in patient sera.

Main Results:

• Seven out of 138 patients showed positive reactions to persulfate salts.
• Six patients reported skin symptoms like urticaria and eczema following exposure to hair bleaches.
• Immunospot and RAST assays identified specific IgE antibodies to persulfates in a subset of patients, suggesting an IgE-mediated mechanism.

Conclusions:

• Immediate hypersensitivity reactions to persulfate salts appear to be IgE-mediated in at least some individuals.
• Prick testing and specific IgE detection methods are valuable tools for diagnosing persulfate allergy.
• Understanding these mechanisms can inform prevention strategies for occupational and consumer exposure.