Immunology

Misleading allergy labelling puts lives at risk

Failing to declare allergens on food labels is a breach of regulations and can put lives at risk. The law relating to allergen labels was changed recently to reduce the risks to consumers. But recent cases of flawed and misleading ...

Immunology

The lungs never forget: Specialised T-cells remember allergens

According to a current study of the Medical University Vienna, specialised T memory lymphocytes in the lungs that react to inhaled allergens, cause attacks of allergic asthma. These T-helper 2-tissue resident memory cells, ...

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Allergen

An allergen is a nonparasitic antigen capable of stimulating a type-I hypersensitivity reaction in atopic individuals.

Most humans mount significant Immunoglobulin E (IgE) responses only as a defense against parasitic infections. However, some individuals mount an IgE response against common environmental antigens. This hereditory predisposition is called atopy. In atopic individuals, non-parasitic antigens stimulate inappropriate IgE production, leading to type I hypersensitivity. Sensitivities vary from one person to another and it is possible to be allergic to an extraordinary range of substances.

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