Asian Pacific journal of allergy and immunology · 2021
Component resolved diagnosis of walnut allergy in young children: Jug r 1 as a major walnut allergen.
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Lee Jeongmin, Jeong Kyunguk, Jeon Se-Ah, Lee Sooyoung
Аннотация
BACKGROUND: Walnuts (WN) are one of the main causes of tree nut allergies. However, the potential value of component resolved diagnosis (CRD) for WN allergy is controversial.
OBJECTIVE: We analyzed the clinical and immunological features of clinical WN allergy and the usefulness of CRD in young children.
METHODS: Forty-one participants with a history of ingesting WN who were assessed for serum-specific IgE to WN (WNsIgE) using CRD (ImmunoCAP ISAC 112) at the Department of Pediatrics in Ajou University Hospital were enrolled and their demographic profiles, clinical symptoms, and laboratory findings were evaluated.
RESULTS: A total of 32 patients were diagnosed with clinical WN allergy, of which 31 had specific immunoglobulin E antibodies to Jug r 1 (Jug r1-sIgE). The Jug r 1-sIgE levels were higher in WN-allergic patients than in WN-tolerant patients and significantly higher in patients with anaphylaxis than in the WN-tolerant patients. Receiver-operating characteristic curves demonstrated that the Jug r 1-sIgE level was much better in discriminating between clinical WN allergy and WN tolerance in young children than the WN-sIgE level.
CONCLUSIONS: Jug r 1 is the major component allergen in young children with clinical WN allergy. To measure Jug r 1-sIgE appears to be a promising approach for both diagnosis and predicting severity in young children with a history of suspected WN allergy.
OBJECTIVE: We analyzed the clinical and immunological features of clinical WN allergy and the usefulness of CRD in young children.
METHODS: Forty-one participants with a history of ingesting WN who were assessed for serum-specific IgE to WN (WNsIgE) using CRD (ImmunoCAP ISAC 112) at the Department of Pediatrics in Ajou University Hospital were enrolled and their demographic profiles, clinical symptoms, and laboratory findings were evaluated.
RESULTS: A total of 32 patients were diagnosed with clinical WN allergy, of which 31 had specific immunoglobulin E antibodies to Jug r 1 (Jug r1-sIgE). The Jug r 1-sIgE levels were higher in WN-allergic patients than in WN-tolerant patients and significantly higher in patients with anaphylaxis than in the WN-tolerant patients. Receiver-operating characteristic curves demonstrated that the Jug r 1-sIgE level was much better in discriminating between clinical WN allergy and WN tolerance in young children than the WN-sIgE level.
CONCLUSIONS: Jug r 1 is the major component allergen in young children with clinical WN allergy. To measure Jug r 1-sIgE appears to be a promising approach for both diagnosis and predicting severity in young children with a history of suspected WN allergy.