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J Korean Med Sci. 2018 Mar 26;33(13):e101. doi: 10.3346/jkms.2018.33.e101.

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

Author information

1
Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea.
2
Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea.
3
Division of Allergy, Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea.
4
Prolagen, Seoul, Korea.
5
Prolagen, Seoul, Korea. PARKJW@yuhs.ac.

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.

KEYWORDS:

Allergens; Allergy and Immunology; Diagnosis; Skin Prick Test

PMID:
29573248
PMCID:
PMC5865053
DOI:
10.3346/jkms.2018.33.e101
[Indexed for MEDLINE]
Free PMC Article

Conflict of interest statement

Dr. Park JW reports serving as an unpaid chief technology officer for Prolagen; Dr. Kim JD, serving as chief executive officer for Prolagen. Dr. Park JW, Dr. Kim JD, Dr. Park KH, having an equity interest in Prolagen. These authors' interests did not influence academic fairness in conducting this study, analyzing results, and writing a paper. Other authors have no potential conflicts of interest to disclose.

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