PMID- 34224230 OWN - NLM STAT- MEDLINE DCOM- 20211213 LR - 20211214 IS - 1578-1267 (Electronic) IS - 0301-0546 (Linking) VI - 49 IP - 4 DP - 2021 TI - Cross-reactivity of Can f 1 with Syrian hamster and Fel d 1 in children. PG - 155-161 LID - 10.15586/aei.v49i4.206 [doi] AB - Introduction and objectives: With increasing pet allergies among pediatric patients, the need for precise environmental care is increasing. We investigated the clinical, immunological, and environmental characteristics of pediatric patients sensitized to a dog to evaluate the cross-antigenicity of canine lipocalin Can f 1 with feline lipocalin Fel d 1 and Syrian hamster extract.Materials and methods: The protein fractions of the processed and commercial Syrian hamster extracts were compared using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). An enzyme-linked immunosorbent assay (ELISA) inhibition test was performed on Can f 1, Fel d 1, and processed Syrian hamster extract, and the antigen-specific immunoglobulin E (IgE)-binding capacity for each antigen was analyzed using serum samples from patients.Results: Twelve of 19 patients with a median age of 40.5 months were symptomatic when exposed to dogs. Eleven (91.7%) patients showed a positive IgE response to Can f 1. Two patients were positive for Fel d 1-specific IgE antibody, and one was positive for hamster-specific IgE antibody. SDS-PAGE confirmed the presence of different patterns of protein bands between the commercial and processed hamster extracts. There was no cross-antigenicity among Can f 1, Fel d 1, and processed Syrian hamster extract. FAU - Jeongmin, Lee AU - Jeongmin L AD - Department of Pediatrics, Yonsei University, Wonju College of Medicine, Wonju, Korea. AD - Department of Pediatrics, Ajou University Graduate School of Medicine, Suwon, Korea. FAU - Se-Ah, Jeon AU - Se-Ah J AD - Department of Pediatrics, Ajou University Graduate School of Medicine, Suwon, Korea. FAU - Sooyoung, Lee AU - Sooyoung L AD - Department of Pediatrics, Ajou University Graduate School of Medicine, Suwon, Korea; jsjs87@ajou.ac.kr. LA - eng PT - Journal Article DEP - 20210701 PL - Singapore TA - Allergol Immunopathol (Madr) JT - Allergologia et immunopathologia JID - 0370073 RN - 0 (Allergens) RN - 0 (Lipocalins) RN - 0 (Plant Extracts) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Allergens/*immunology MH - Animals MH - Cats MH - Child, Preschool MH - Cricetinae MH - Dogs MH - Enzyme-Linked Immunosorbent Assay MH - Humans MH - Immunoglobulin E MH - Lipocalins MH - Mesocricetus MH - Plant Extracts OTO - NOTNLM OT - Can f 1 OT - Syrian hamster OT - children OT - cross-reactivity OT - dog allergy COIS- This study was supported by the 2012 MSD research grant of the Korean Academy of Pediatric Allergy and Respiratory Disease. EDAT- 2021/07/06 06:00 MHDA- 2021/12/15 06:00 CRDT- 2021/07/05 12:34 PHST- 2021/01/29 00:00 [received] PHST- 2021/02/19 00:00 [accepted] PHST- 2021/07/05 12:34 [entrez] PHST- 2021/07/06 06:00 [pubmed] PHST- 2021/12/15 06:00 [medline] AID - 10.15586/aei.v49i4.206 [doi] PST - epublish SO - Allergol Immunopathol (Madr). 2021 Jul 1;49(4):155-161. doi: 10.15586/aei.v49i4.206. eCollection 2021.