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  • Title: [Clinical evaluation of measurement method for antigen specific IgE in tears of patients with allergic conjunctival disease].
    Author: Kitazawa M, Shoji J, Inada N, Sawa M, Kato H.
    Journal: Nippon Ganka Gakkai Zasshi; 2003 Oct; 107(10):578-82. PubMed ID: 14598708.
    Abstract:
    PURPOSE: To investigate a method for determining antigen specific IgE antibodies in tears of patients with allergic keratoconjunctival disease. SUBJECTS AND METHODS: Antigen specific IgE antibodies to Japanese cedar pollen or Housedust-Mites in tears of patients with allergic conjunctival diseases were examined. Both eyes in each patient were examined. The right eye was examined in normal healthy volunteers as a control. The number of eyes examined for IgE antibodies to Japanese ceder pollen was 32 eyes with seasonal allergic conjunctivitis(SAC), 12 eyes with perennial allergic conjunctivitis(PAC), 12 eyes with atopic keratoconjunctivitis (AKC), 4 eyes with vernal keratoconjunctivitis (VKC), and 12 eyes of the controls. The number of eyes examined for IgE antibodies to Housedust-Mites was 32 eyes with SAC, 20 eyes with PAC, 30 eyes with AKC, 22 eyes with VKC, and 10 eyes with the control. Tears were sampled by the method of Schirmer Test-1. Sampled tears were eluded with 200 microliters of phosphate buffered solution(pH 7.2, 0.05 M) and analyzed by the AlaSTAT-IMMULYZE method. Recovery rate of absorbance by filter paper for IgE antibodies in tears was determined by ratio to the standard sample of serum solution containing Housedust-Mite specific IgE antibodies with known concentration. RESULTS: Recovery rate of filter paper for IgE antibodies in tears was 83.6%. IgE antibodies in tears to Japanese cedar pollen were detected in 11 of 32 eyes of SAC. In other subjects, IgE antibodies were under the limit of the detection concentration except one eye of a patient with AKC. In the positive cases of Japanese cedar pollen specific IgE antibodies, there was no significant difference in the concentration between the right and the left eyes. IgE antibodies to Housedust-Mites were significantly higher not only in incidence but also in concentration in 18 of 22 eyes with VKC than in that in other in 8 of 20 eyes with PAC and 12 of 30 eyes with AKC. CONCLUSION: The method for determining antigen specific IgE antibodies in tears is clinically useful to diagnose and to investigate pathophysiology of allergic conjunctival diseases.
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