Department of Allergy and Rheumatology, Ajou University School of Medicine, Suwon, Korea.
Allergy Asthma Immunol Res. 2010 Apr;2(2):141-3. doi: 10.4168/aair.2010.2.2.141. Epub 2010 Mar 24.
Rice is the major staple food in a large part of the world, especially in Asia. Hypersensitivity reactions to rice are rare. Moreover, cases of occupational allergies induced by inhalation of rice powder are uncommon. We report a 31-year-old male with work-related rhinitis and conjunctivitis symptoms caused by occupational exposure to rice powder in the grain industry. He showed positive responses to rice extracts on a skin prick test, and a high level of serum specific IgE to rice was detected by ELISA. Occupational rhinitis was confirmed by a nasal provocation test with rice extracts. An IgE ELISA inhibition test showed cross-creativity between rice and various grass pollen extracts. These findings suggest that the inhalation of rice powder can induce IgE-mediated occupational rhino-conjunctivitis, which may be derived from cross-reactivity to major grass pollens.
大米是世界上很大一部分地区的主要主食，尤其是在亚洲。对大米的过敏反应很少见。此外，因吸入米粉而引起职业性过敏的病例也不常见。我们报告了一例 31 岁男性，因在谷物行业接触米粉而出现与职业相关的鼻炎和结膜炎症状。他的皮肤点刺试验对大米提取物呈阳性反应，ELISA 检测到血清特异性 IgE 对大米呈高水平。大米提取物鼻激发试验证实为职业性鼻炎。IgE ELISA 抑制试验显示大米和各种草花粉提取物之间存在交叉致敏性。这些发现表明，吸入米粉可引起 IgE 介导的职业性鼻结膜炎，这可能源于对主要草花粉的交叉反应性。
