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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.

This text uses material from Wikipedia and is available under the GNU Free Documentation License.


Want tots without allergies? Try sucking on their pacifiers

(HealthDay)—A new Swedish study suggests that parents who want to protect their infants from developing allergies should try a simple approach to introducing their children to the wide world of microbes: ...

Immunology created May 06, 2013 | popularity 4.7 / 5 (13) | comments 2 | with audio podcast

Allergic disease worsens respiratory symptoms and exacerbations in COPD

Patients with chronic obstructive pulmonary disease (COPD) who also have allergic disease have higher levels of respiratory symptoms and are at higher risk for COPD exacerbations, according to a new study from researchers ...

Diseases, Conditions, Syndromes created May 10, 2013 | popularity not rated yet | comments 0

Study demonstrates that once-a-day pill offers relief from ragweed allergy symptoms

An international team of researchers, led by physician-scientists at Johns Hopkins, reports that a once-daily tablet containing a high dose of a key ragweed pollen protein effectively blocks the runny noses, sneezes, nasal ...

Immunology created May 07, 2013 | popularity not rated yet | comments 0

Oral drops can give kids needle-free relief from asthma, allergies

Allergy shots are commonly used to treat children with severe environmental allergies and asthma, but under-the-tongue drops may offer yet another beneficial—and stick-free—option for pediatric allergy sufferers, according ...

Immunology created May 06, 2013 | popularity not rated yet | comments 0