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Rev Alerg Mex. 2019 Jul-Sep;66(3):322-328. doi: 10.29262/ram.v66i3.608.

[Allergy to vegetables belonging to the Solanaceae family].

[Article in Spanish; Abstract available in Spanish from the publisher]

Author information

1
Hospital La Paz, Servicio de Alergia, Madrid, España. margui.tomas@gmail.com.

Abstract

in English, Spanish

BACKGROUND:

Although cross-reactivity with other plant-based foods and latex has been described, allergies to potatoes and tomatoes are uncommon.

OBJECTIVE:

To study the different sensitization patterns in patients who are allergic to potatoes and/or tomatoes.

METHODS:

Skin prick tests were carried out with fresh foods and extracts, specific IgE determination and allergen detection by SDS-PAGE and IgE-Immunoblotting with both raw and heated potato and tomato extracts.

RESULTS:

In 10 patients, two thermostable allergens to potato extract were detected; the first one with a molecular weight that is compatible with Sola t 1 (43 kDa, patatin) and the second one with a molecular weight of 14-22 kDa, which could correspond to the allergens Sola t 4 (16 kDa) and Sola t 2 and Sola t 3 (21 kDa); in two patients who are allergic to potatoes and two patients who are allergic to tomatoes, a thermostable allergen that is compatible to Sola I 2 (50 kDa) was detected. The patient had presented oral allergy syndrome with some types of potatoes and showed higher IgE reactivity to two thermostable potato allergens.

CONCLUSIONS:

The allergen sensitization patterns were similar in all the patients that had been studied, regardless of the symptoms. A new allergen involved in the allergy to solanaceae plants has been detected.

KEYWORDS:

Allergy; IgE immunoblotting; Potato allergy; Solanaceae; Tomato allergy

PMID:
31606016
DOI:
10.29262/ram.v66i3.608

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