Abstract：
:The properties of IgA and IgG anti-gliadin antibodies from the serum of patients with coeliac disease have been compared. The antibodies were quantified by ELISA using microtitre plates coated with crude gliadin fractions. Their specificity was confirmed by immunoblotting. Heat-treated sera containing IgA antibodies stimulated chemiluminescence when added together with neutrophils to microtitre plates coated with crude gliadin. Sera containing only IgG antibodies were less efficient. When IgA and IgG were purified from a serum containing both classes of anti-gliadin antibodies, each of the preparations was able to stimulate neutrophil chemiluminescence in plates coated with gliadin. Although the yield of anti-gliadin antibody determined by ELISA was high, the ability of the purified immunoglobulins to stimulate neutrophil chemiluminescence was much less than that of the unfractionated serum. This loss of activity was shown to be due to the ability of each class of antibody to potentiate the activity of the other in the whole serum.
journal_name
Immunologyjournal_title
Immunologyauthors
Stewart WW,Kerr MAsubject
Has Abstractpub_date
1991-08-01 00:00:00pages
491-7issue
4eissn
0019-2805issn
1365-2567journal_volume
73pub_type
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