PMID- 34212548 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210707 IS - 2092-7355 (Print) IS - 2092-7363 (Electronic) IS - 2092-7355 (Linking) VI - 13 IP - 4 DP - 2021 Jul TI - Allergenicity and Stability of 6 New Korean Bony Fish Extracts. PG - 623-637 LID - 10.4168/aair.2021.13.4.623 [doi] AB - PURPOSE: Diagnostic tests for allergen sensitization should reflect real exposure. We made 6 new bony fish extracts, which are consumed popularly in Korea, and evaluated their allergenicity and stability. METHODS: We manufactured fish extracts from codfish, mackerel, common eel, flounder, cutlass, and catfish. Protein and parvalbumin (PV) were evaluated by Bradford assay, 2-site enzyme-linked immunosorbent assay, sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE), and anti-PV immunoblotting. The immunoglobulin E (IgE) reactivities of the extracts were evaluated with ImmunoCAP and IgE immunoblotting using sera from 24 Korean fish allergy patients, 5 asymptomatic sensitizers, and 11 non-atopic subjects. Stability of the extracts stored in 4 different buffers were evaluated for up to a year. RESULTS: The protein concentrations of commercial SPT fish extracts varied with up to a 7.5-fold difference. SDS-PAGE showed marked differences in the PV concentrations of commercial SPT reagents. Specific IgE measurements for the following investigatory fish extracts-iCodfish, iMackerel, and iEel-were concordant with that of their corresponding Phadia ImmunoCAP measurements. ImmunoCAP results showed marked IgE cross-reactivity among the fish species, and the overall sensitivity of ImmunoCAP with the investigatory fish extracts for identification of culprit fish species was 85.7%. The protein and PV concentrations in the investigatory extracts were highly stable in saline with 0.3% phenol-50% glycerol at 4 degrees C for up to a year. CONCLUSIONS: The commercial SPT fish extracts exhibited considerable variation in terms of allergenicity, which may impact on diagnostic accuracy. Our new fish extracts have sufficient allergenicity and stability and may be adequate to various clinical applications. CI - Copyright (c) 2021 The Korean Academy of Asthma, Allergy and Clinical Immunology . The Korean Academy of Pediatric Allergy and Respiratory Disease. FAU - Yuk, Ji Eun AU - Yuk JE AUID- ORCID: 0000-0003-2517-2653 AD - Division of Allergy and Immunology, Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea. FAU - Lee, Jongsun AU - Lee J AUID- ORCID: 0000-0003-1526-2241 AD - Division of Allergy and Immunology, Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea. FAU - Jeong, Kyoung Yong AU - Jeong KY AUID- ORCID: 0000-0001-9887-1426 AD - Division of Allergy and Immunology, Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea. FAU - Park, Kyung Hee AU - Park KH AUID- ORCID: 0000-0003-3605-5364 AD - Division of Allergy and Immunology, Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea. FAU - Kim, Jung Dong AU - Kim JD AUID- ORCID: 0000-0002-6348-9267 AD - Prolagen, Seoul, Korea. FAU - Kim, Ji Tae AU - Kim JT AUID- ORCID: 0000-0002-8690-358X AD - Prolagen, Seoul, Korea. FAU - Lee, Jae Hyun AU - Lee JH AUID- ORCID: 0000-0002-0760-0071 AD - Division of Allergy and Immunology, Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea. FAU - Park, Jung Won AU - Park JW AUID- ORCID: 0000-0003-0249-8749 AD - Division of Allergy and Immunology, Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea. AD - Prolagen, Seoul, Korea. parkjw@yuhs.ac. LA - eng GR - 20006057/MOTIE/Ministry of Trade, Industry and Energy/Korea GR - HI14C1324/Korea Health Industry Development Institute/Republic of Korea PT - Journal Article PL - Korea (South) TA - Allergy Asthma Immunol Res JT - Allergy, asthma & immunology research JID - 101518382 PMC - PMC8255345 OTO - NOTNLM OT - Allergenicity OT - bony fish OT - extracts OT - fish allergy OT - fish parvalbumin OT - food allergy COIS- There are no financial or other issues that might lead to conflict of interest. EDAT- 2021/07/03 06:00 MHDA- 2021/07/03 06:01 PMCR- 2021/07/01 CRDT- 2021/07/02 07:08 PHST- 2020/07/28 00:00 [received] PHST- 2020/11/04 00:00 [revised] PHST- 2020/12/14 00:00 [accepted] PHST- 2021/07/02 07:08 [entrez] PHST- 2021/07/03 06:00 [pubmed] PHST- 2021/07/03 06:01 [medline] PHST- 2021/07/01 00:00 [pmc-release] AID - 13.623 [pii] AID - 10.4168/aair.2021.13.4.623 [doi] PST - ppublish SO - Allergy Asthma Immunol Res. 2021 Jul;13(4):623-637. doi: 10.4168/aair.2021.13.4.623.