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Glomerular IgA deposits in patients with celiac disease
A Pasternack1, P Collin, J Mustonen
1Department of Clinical Sciences, University of Tampere, University Central Hospital, Finland.
Clinical Nephrology
|August 1, 1990
Summary
Celiac disease patients frequently show IgA deposits in their glomeruli, even without kidney disease symptoms. These deposits correlate with specific antibodies and immune complexes, suggesting a link between celiac disease and glomerular immunopathology.
Area of Science:
- Nephrology
- Immunology
- Gastroenterology
Background:
- Celiac disease is an autoimmune disorder triggered by gluten ingestion.
- Renal involvement in celiac disease is not well-understood, particularly concerning glomerular pathology.
- Early detection of kidney issues in celiac patients is crucial.
Purpose of the Study:
- To investigate glomerular immunopathology in patients with newly diagnosed celiac disease.
- To determine the prevalence and characteristics of mesangial IgA deposits.
- To explore the association between mesangial IgA and circulating immune markers.
Main Methods:
- Studied 25 newly diagnosed celiac disease patients without clinical renal disease signs.
- Utilized fine-needle aspiration biopsy for glomerular specimens.
- Employed indirect immunofluorescence to detect immunoglobulins and complement.
Main Results:
- Mesangial IgA deposits were found in 8 patients (32%).
- Patients with mesangial IgA showed higher frequencies of IgA-class circulating immune complexes (CIC), antireticulin antibodies (ARA), antigliadin antibodies (AGA), and rheumatoid factor (RF).
- Elevated serum IgA, IgA-ARA, and IgA-AGA levels were observed in patients with mesangial IgA.
Conclusions:
- Glomerular mesangial IgA deposits are common in untreated celiac disease.
- These deposits are associated with circulating IgA antibodies and immune complexes.
- IgA deposition may occur without inducing clinically apparent glomerulonephritis, possibly due to a lack of complement activation.