Yamamoto Tetsuo, Asakura Kohji, Shirasaki Hideaki, Himi Tetsuo
Yamamoto ENT Clinic, Sapporo.
Nihon Jibiinkoka Gakkai Kaiho. 2013 Jul;116(7):779-88. doi: 10.3950/jibiinkoka.116.779.
In Hokkaido and Scandinavia, birch pollen allergic persons are common and they often report oral and pharyngeal hypersensitivity to fruits and vegetables (oral allergy syndrome, OAS), because of immunological cross-reactivity. In Scandinavia, nuts as well as Rosaceae fruits such as apples were the foods most often reported to elicit symptoms. On the other hand, nuts are minor foods causing hypersensitivity in Japan. Even in Japan, regional differences of foods causing hypersensitivity have been reported, which may be related to the regional differences of elementary habit and pollen dispersion. In the present study, we evaluated the intake history of the foods and the frequency of food hypersensitivity in adults from the general population.
Three hundreds and thirty nine subjects (20-67 years old) took part in the study. With a questionnaire survey, we asked them about their intake history and hypersensitive symptoms for 33 kinds of fruit, vegetables, and nuts.
30% of subjects had eaten Brazil nuts, 80% had eaten pomegranates, and 81% had eaten hazelnuts. And over 95% of subjects had eaten the other 30 foods. Those who had lived in Hokkaido for more than 20 years had a higher frequency of plum consumption than the others. Those who had lived in Hokkaido for more than 20 years had a lower frequency of loquat, fig and pomegranate consumption than the others. Food hypersensitivity was found in 52 subjects (15.3%). The most common symptom was OAS (46 subjects, 13.6%), and foods most frequently causing OAS were peach (21 subjects, 6.2%), cherry (19 subjects, 5.6%) and apple (17 subjects, 5.0%). 26 subjects (7.7%) reported OAS to Rosaceae fruits. The ratio of having OAS to consuming Rosaceae fruits was 11.0% in the group who had lived in Hokkaido for more than 20 years, which was higher than the group who has lived in Hokkaido for less than 20 years. The intake history of hazelnuts and Brazil nuts was very low, with a correspondingly low frequency of food hypersensitivity associated with these nuts.
The frequency of intake and hypersensitivity of some foods differ among different regions.
在北海道和斯堪的纳维亚半岛，桦树花粉过敏者很常见，他们常因免疫交叉反应而报告对水果和蔬菜有口腔和咽部过敏反应（口腔过敏综合征，OAS）。在斯堪的纳维亚半岛，坚果以及苹果等蔷薇科水果是最常引发症状的食物。另一方面，坚果在日本是引起过敏反应的次要食物。即使在日本，也有报道称引起过敏反应的食物存在地区差异，这可能与基本饮食习惯和花粉传播的地区差异有关。在本研究中，我们评估了普通人群中成年人的食物摄入史和食物过敏频率。
339名受试者（20 - 67岁）参与了该研究。通过问卷调查，我们询问了他们对33种水果、蔬菜和坚果的摄入史及过敏症状。
30%的受试者食用过巴西坚果，80%食用过石榴，81%食用过榛子。超过95%的受试者食用过其他30种食物。在北海道居住超过20年的人食用李子的频率高于其他人。在北海道居住超过20年的人食用枇杷、无花果和石榴的频率低于其他人。52名受试者（15.3%）被发现有食物过敏。最常见的症状是口腔过敏综合征（46名受试者，13.6%），最常引起口腔过敏综合征的食物是桃子（21名受试者，6.2%）、樱桃（19名受试者，5.6%）和苹果（17名受试者，5.0%）。26名受试者（7.7%）报告对蔷薇科水果有口腔过敏综合征。在北海道居住超过20年的人群中，食用蔷薇科水果后出现口腔过敏综合征的比例为11.0%，高于在北海道居住不足20年的人群。榛子和巴西坚果的摄入史非常低，与之相关的食物过敏频率也相应较低。
不同地区某些食物的摄入频率和过敏频率存在差异。
