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Hypersensitivity, also known as a hypersensitivity reaction or allergic reaction, is a condition where the body's immune system reacts abnormally to a foreign substance. Such substances, that cause hypersensitivity are referred to as an allergen, could be something typically harmless to most people, like pollen or certain foods.
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An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
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Allergic reactions related to drugs are hypersensitivity responses driven by the immune system and bear no connection to the drug's therapeutic action. While drugs in isolation do not trigger an immune response, they can interact with endogenous proteins to form antigens. These antigens stimulate lymphocytes to produce antibodies. IgE-type antibodies attach themselves to mast cells. Upon subsequent exposure to the same stimulus, the antigen-antibody interaction is initiated, unleashing...
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Updated: May 28, 2025

A Mouse Ear Model for Allergic Contact Dermatitis Evaluation
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在亚托匹性皮肤炎中的过敏原

Jiayan Zhang1,2,3, Guofang Li1,2,3, Qiuyang Guo1,2,3

  • 1Dermatology Center, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, China.

Clinical reviews in allergy & immunology
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概括

亚托匹性皮肤炎 (AD) 患者由于皮肤屏障受损而具有更高的过敏原敏感性风险. 早期的过敏原暴露策略可以帮助预防AD和相关的过敏状况.

关键词:
亚托皮炎; 过敏原; 屏障功能障碍; 免疫治疗.

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科学领域:

  • 免疫学 免疫学 免疫学
  • 皮肤病学 皮肤病学
  • 过敏学 过敏学

背景情况:

  • 亚托邦性皮肤炎 (AD) 是一种慢性炎症性皮肤疾病,具有复杂的过敏原相互作用.
  • 与普通人群相比,AD患者对食物和吸入过敏原的敏感度增加.
  • 双重过敏原暴露假设表明,屏障完整性影响了耐受性与敏感性.

研究的目的:

  • 探索皮肤屏障功能,过敏原暴露路径和亚托皮炎敏感化之间的关系.
  • 了解阿尔茨海默病中皮肤屏障受损如何影响口服耐受性发展.
  • 评估个性化过敏原测试和免疫治疗在AD治疗中的作用.

主要方法:

  • 关于双重过敏原暴露假设和AD的现有证据的审查.
  • 影响过皮与口服过敏原敏感化因素的分析.
  • 讨论对避免过敏原,重新引入和免疫疗法的影响.

主要成果:

  • 在阿尔茨海默病中皮肤屏障受损增加了通过皮肤传感的风险,并可能阻碍口服耐受性.
  • 对接触过敏原 (金属,香料) 的敏感性在阿尔茨海默病患者中并不总是更高.
  • 个性化过敏原测试可以为管理策略提供信息.

结论:

  • 皮肤屏障功能障碍是AD过敏原敏感化的关键因素.
  • 优化过敏原暴露路径对于耐受性诱导和AD预防至关重要.
  • 过敏原特异性免疫疗法有望预防AD和亚托皮性疾病.