Immunological Aspects of Asthma (Prophylaxis)

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Abstract
A long follow‐up study revealed that convalescent stage children still have the potency to have an immediate type hypersensitivity reaction on exposure to mite antigen, with a high titer of mite specific IgE in their sera, but they are free from asthmatic attacks because of the reduction in the amount of mite antigen in the body, as shown by the reduction in the amount of mite specific IgG. We also made a prospective study to see whether early elimination of the allergen has any beneficial effect on the cessation of the development of allergic diathesis thereafter. Our study suggested that early elimination of food allergen in infancy not only improved clinical manifestations but also had a protective effect on the progression of the allergic march so far as production of reaginic antibodies was concerned: production of total IgE and mite specific IgE was kept to a minimum.

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