Concordance of skin prick test and serum-specific IgE to locally produced component-resolved diagnostics for cockroach allergy.
Ann Allergy Asthma Immunol
; 122(1): 93-98, 2019 01.
Article
en En
| MEDLINE
| ID: mdl-30287255
ABSTRACT
BACKGROUND:
Diagnosis of Periplaneta americana (American cockroach, ACR) allergy is commonly performed based on clinical history and skin prick test (SPT) or specific serum IgE (sIgE) measurement. The concordance of the findings with the SPT and sIgE results has never been investigated.OBJECTIVE:
To compare the results of SPT with commercial ACR-extract (C-ACE) and sIgE measurement, using commercial kit and in-house enzyme-linked immunosorbent assay (ELISA) to the locally produced ACR extract (L-ACE) and native Per a 1, Per a 5, Per a 7, and Per a 9.METHODS:
Sera from 66 individuals clinically diagnosed with chronic allergic rhinitis were included; 46 were positive SPT to C-ACE, and 20 were negative. Specific serum IgE levels were established by using a commercial test kit (ImmunoCap) and an in-house IgE-ELISARESULTS:
The percentage the C-ACE SPT-positive cases that were positive by the ImmunoCap-sIgE was 32.6%, indicating low concordance of the 2 assays. With the in-house ELISA, Per a 9 gave the highest sensitivity (98.00%), positive predictive value (PPV; 95.74%), and negative predictive value (NPV; 94.74%) of the sIgE quantification. The correlation coefficients (R) of the L-ACE-SPT and sIgE to L-ACE, Per a 1, Per a 5, Per a 7, and Per a 9 and ImmunoCap sIgE were 0.133, 0.278, 0.419, 0.280, and 0.432, and 0.256, respectively.CONCLUSION:
Skin prick test and sIgE measurement using commercial reagents have low concordance. Data of this study showed that sIgE to the native Per a 9 should be considered as an adjunct to the clinical history in diagnosis of ACR sensitization/allergy, particularly when the SPT and the nasal challenge, which is the gold standard method, cannot be performed.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Arginina Quinasa
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Inmunoglobulina E
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Pruebas Cutáneas
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Alérgenos
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Proteínas de Insectos
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Glutatión Transferasa
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Hipersensibilidad Inmediata
Tipo de estudio:
Diagnostic_studies
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Prognostic_studies
Límite:
Adolescent
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Adult
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Animals
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Ann Allergy Asthma Immunol
Asunto de la revista:
ALERGIA E IMUNOLOGIA
Año:
2019
Tipo del documento:
Article
País de afiliación:
Tailandia