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Clin Allergy. 1976 Sep;6(5):429-39.

Immunological studies in vitro and in vivo of children with pollenosis given immunotherapy with an aqueous and a glutaraldehyde-treated tyrosine-absorbed grass pollen extract.


Ten patients treated with an aqueous Timothy grass pollen extracts and given monthly maintenance doses were compared to ten patients given a glutaraldehyde-treated tyrosine-adsorbed grass pollen extract as five weekly injections pre-seasonally. There were four non-treated controls. Both treated groups showed equivalent increases of total IgE, Timothy-specific IgE, and IgG, but the concentrations of Timothy-specific IgG antibodies were sustained only in the patients receiving maintenance therapy. An increase of IgE and RAST titres during the pollen season were obtained in all three groups. No consistent changes were seen in the results of leucocyte histamine release tests and naso-conjunctival provocation tests from spring to autumn. A Sepharo-protein A technique was used for the estimation of Timothy-specific IgG antibodies. The results obtained with this technique correlated excellently with those of the Farr technique and a double-antibody technique.

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