A 17-kDa allergen detected in pine nuts.
case_report · Level V
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- Record sourced from PubMed, PMID 10753022.
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Abstract
Few cases of allergy to pine nuts have been described. We report a case of anaphylactic reaction to pine nuts. The patient needed to be treated in the emergency room due to a systemic reaction immediately after eating pine nuts. The patient was studied by prick tests and prick by prick tests. Specific IgE was measured by CAP and by SDS-PAGE/immunoblotting by a diffusion method. The patient showed positive prick by prick tests to pine nuts (12 mm of maximum wheal diameter). Specific IgE was positive (0.79 kU/l). The patient's serum recognized several proteins by immunoblot. However, a 17-kDa allergen band was detected with high intensity. This protein was found to be sensitive to reducing agents, losing its IgE-binding properties after reduction. The patient presented an IgE-mediated reaction and detected a 17-kDa protein from pine nuts not previously described.
Medical subject headings
- Allergens
- Anaphylaxis
- Food Hypersensitivity
- Nuts