J Korean Med Sci.  2018 Mar;33(13):e101. 10.3346/jkms.2018.33.e101.

Comparison between Newly Developed and Commercial Inhalant Skin Prick Test Reagents Using In Vivo and In Vitro Methods

• Lee SC
• Sim DW
• Lee J
• Jeong KY
• Park KH
• Lee JH
• Kim JD
• Park JW

• KMID: 2409211
• DOI: http://doi.org/10.3346/jkms.2018.33.e101

Abstract

BACKGROUND
We developed skin prick test (SPT) reagents for common inhalant allergens that reflected the real exposure in Korea. The study aim was to evaluate diagnostic usefulness and allergen potency of our inhalant SPT reagents in comparison with commercial products.
METHODS
We produced eight common inhalant allergen SPT reagents using total extract (Prolagen): Dermatophagoides farinae, Dermatophagoides pteronyssinus, oak, ragweed, mugwort, Humulus japonicus pollens, as well as cat and dog allergens. We compared the newly developed reagents with three commercially available SPT reagents (Allergopharma, Hollister-Stier, Lofarma). We measured total protein concentrations, sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE), major allergen concentration, and biological allergen potencies measured by immunoglobulin E (IgE) immunoblotting and ImmunoCAP inhibition test.
RESULTS
Diagnostic values of these SPT reagents were expressed as positivity rate and concordance rate of the results from ImmunoCAP allergen-specific IgE test in 94 allergic patients. In vitro analysis showed marked differences in protein concentrations, SDS-PAGE features, major allergen concentrations, and biological allergen potencies of four different SPT reagents. In vivo analysis showed that positive rates and concordance rates of Prolagen® SPT reagents were similar compared to the three commercial SPT reagents.
CONCLUSION
The newly developed Prolagen® inhalant SPT reagents are not inferior to the commercially available SPT reagents in allergy diagnosis.

Keyword

Skin Prick Test; Allergens; Allergy and Immunology; Diagnosis

MeSH Terms

Allergens
Allergy and Immunology
Ambrosia
Animals
Artemisia
Cats
Dermatophagoides farinae
Dermatophagoides pteronyssinus
Diagnosis
Dogs
Electrophoresis
Electrophoresis, Polyacrylamide Gel
Humans
Humulus
Hypersensitivity
Immunoblotting
Immunoglobulin E
Immunoglobulins
In Vitro Techniques*
Indicators and Reagents*
Korea
Methods*
Pollen
Skin*
Sodium
Allergens
Immunoglobulin E
Immunoglobulins
Indicators and Reagents
Sodium