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What is Gluten and Dairy Intolerance? What is the difference between an allergy and intolerance/sensitivity. Latest medical research. Open to the public.
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TOPIC: Gliadin IgG antibodies and circulating immune complexes.

Gliadin IgG antibodies and circulating immune complexes. 21 Jan 2009 20:00 #592

  • Debra
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Scand J Gastroenterol. 2008 Sep 26:1-4.

Gliadin IgG antibodies and circulating immune complexes.

Eisenmann A , Murr C , Fuchs D , Ledochowski M .

Department of Clinical Nutrition, Medical University of Innsbruck, Austria.

Objective. Circulating immune complexes (CICs) in blood are associated with autoimmune-diseases such as systemic lupus erythematosus, immune complex glomerulonephritis, rheumatoid arthritis and vasculitis. However, slightly increased serum concentrations of such CICs are sometimes also found in healthy individuals. The objective of the current study was to assess whether food antigens could play a role in the formation of CICs.

 Material and methods. A total of 352 (265 F, 87 M), so far, healthy individuals were tested for CICs containing C1q and immunoglobulin G (IgG) as well as for gliadin IgG antibodies using the ELISA technique. Additionally, fructose and lactose malabsorption was assessed using hydrogen breath tests.

Results. In our study, 15.3% (54/352) of the patients presented with elevated CIC concentrations (above 50 microg/ml) and 6.5% (23/352) of the study population were positive for gliadin IgG antibodies (above 20 U/ml). CIC concentration levels were significantly higher in the group with elevated gliadin IgG antibodies (CIC median: 49.0 microg/ml) compared with the group with normal levels of gliadin IgG antibodies (CIC median: 30.0 microg/ml; Mann-Whitney U-test, U=1992; p <0.001). As expected, there was no difference in CIC concentrations (Mann-Whitney U-test, U=6106; p=0.783) and gliadin IgG (Mann-Whitney U-test, U=3761; p=0.411) between patients in the fructose or lactose malabsorber groups and the subjects without malabsorption. Conclusions.

The results of this study indicate that certain food antigens (e.g. gluten) could play a role in the formation of CICs. An association between CICs and fructose or lactose malabsorption seems to be improbable
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