Oleaceae-induced XXXX in an area with exposure to olive and ash trees.

@entity1 @entity1472 @entity2023 @entity1473
BACKGROUND: Navarre, in Northern Spain, is an area with moderate exposure to olive and ash tree pollen. OBJECTIVE: To assess the relevance of ash as a cause of @entity2023 in our region. METHODS: The study sample comprised 85 @entity1 from Navarre with clinical symptoms of @entity2023 . Specific immunoglobulin E (sIgE) was determined to Fra e 1, Ole e 1, and a mixture of @entity1472 - and @entity1473 -terminal domains of Ole e 9 (Ole e 9 NC) (ADVIA-Centaur). At the same time, the presence of sIgE to other pollen allergens was studied. Prick tests were performed with ash pollen (n=33) and olive pollen (n=85) and the symptomatic period was recorded (n=85). As a control group, we studied the serum of 98 @entity1 with olive pollen allergy, intense exposure to olive pollen, and no exposure to ash. RESULTS: Sensitization to Oleaceae was detected in 24/85 @entity1 in the study group (28.2%). In this group, the mean (SD) level of IgE to Fra e 1 was 8.5 (10) kU(A)/L and to Ole e 16.07 (7.88) kU(A)/L (P < .001). In the control group, these figures were 103.64 (132.19) kU(A)/L and 86.43 (118.5) kU(A)/L (P < .001), respectively. In all @entity1 with positive sIgE to Fra e 1, IgE to Ole e 1 was also detected (concordance index, kappa = 1), both in the study group and in the control group. @entity1 who were sensitized to Fra e 1 did not present a longer symptomatic period and their symptoms did not have an earlier onset. CONCLUSION: We did not find evidence of clinically relevant sensitization to ash in Navarre.
