Get access

Children monosensitized to pine nuts have similar patterns of sensitization



Elio Novembre, Department of Pediatric, Allergy Unit, A. Meyer Children Hospital, University of Florence, Viale Pieraccini, 24, 50139 Florence, Italy.

Tel.: +39 0555662955

Fax: +39 0555662400




Several cases of pine nut allergies and anaphylaxis have been reported in the literature, but only few pine nut allergens have been characterized. The aim of this research is to identify through immunoelectrophoretic techniques the major pine nut allergens in a group of children monosensitized to pine nuts.


We studied five children with pine nut allergies and no other sensitization to food except to pine nuts, confirmed by in vivo (prick test, prick-to-prick) and in vitro tests (specific IgE determinations [CAP-FEIA]). The protein profile of pine nuts was analyzed by Sodium Dodecyl sulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE). Immunoblotting was performed after incubation of membranes with the sera from the children included in the present study.


Immunoblotting (SDS-PAGE) demonstrated five similar bands between 6 and 47 kDa in all the subjects studied.


These bands should be considered the potential allergens for pine nut allergic children.

Get access to the full text of this article