A. Allergy to foods in patients monosensitized to Artenzisia pollen.Allergy 1996: 51: 927-931. 0 Munksgaard 1996. It is known that patients with pollinosis may display clinical characteristics caused by allergy to certain fruits and vegetables, but subjects allergic to Avteniisia seem to show particularly peculiar characteristics. The clinical features of 84 patients with rhinitis, asthma. urticaria, and/or anaphylaxis whose inhalant allergy was exclusively to Arteniisia vulgaris were studied and compared with a control group of SO patients monosensitized to grass pollen. The mean age for the beginning of symptoms was 30.2 years, and this was higher than in the control group (P
Possible associations between allergy to pollen and that to food allergens were studied in 262 patients sensitized to pollen. Forty-four patients (16.7%) showed some allergic symptoms after testing with fruits and vegetables, melon being the food most frequently involved (24 patients), followed by sunflower seed (12 patients). Skin testing was done by the prick method with natural fruit or vegetable, and also with commercial food extracts. We found in our region that the distribution of sensitivity to pollens in the group of patients with allergy to fruits or vegetables does not coincide with the prevalence in pollen-allergic subjects in general, since in the first group--subjects allergic to food--there was a major prevalence of allergy to Plantago (P < 0.01). In particular, in the group of subjects allergic to melon, the prevalence of sensitivity to grass and especially to Plantago was larger than in pollen-allergic subjects in general (P < 0.05 and P < 0.001, respectively). The use of fresh food produced better results than commercial extracts. A positive skin test to fresh melon closely correlated with positive CAP results. CAP inhibition experiments were carried out, and we found that Dactylis and Plantago extracts inhibited the binding of the melon-positive pool to solid-phase melon. The results suggest the existence of common antigenic epitopes in melon and Plantago pollen, and in melon and grass pollen.
It is known that patients with pollinosis may display clinical characteristics caused by allergy to certain fruits and vegetables, but subjects allergic to Artemisia seem to show particularly peculiar characteristics. The clinical features of 84 patients with rhinitis, asthma, urticaria, and/or anaphylaxis whose inhalant allergy was exclusively to Artemisia vulgaris were studied and compared with a control group of 50 patients monosensitized to grass pollen. The mean age for the beginning of symptoms was 30.2 years, and this was higher than in the control group (P < 0.05). We found the main incidence to be in women (70.2%). Some 42.3% had family history of atopia, lower than in the control group (P < 0.05), while the prevalence of asthma and urticaria was significantly higher (P < 0.05). Food hypersensitivity was reported by 23 patients (27.3%) allergic to Artemisia. The foods responsible (with respective numbers of cases) were honey (14), sunflower seeds (11), camomile (four), pistachio (three), hazelnut (two), lettuce (two), pollen (two), beer (two), almond (one), peanut (one), other nuts (one), carrot (one), and apple (one). None of the patients monosensitized to grass had food allergy. CAP inhibition experiments were carried out on a single patient. Results showed the existence of common antigenic epitopes in pistachio and Artemisia pollen for this patient. We concluded that mugwort hay fever can be associated with the Compositae family of foods, but that it is not normally associated with other foods.
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