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Dioscin Mediated IgA Nephropathy Alleviation by Inhibiting B Cell Activation In Vivo and Decreasing Galactose-Deficient IgA1 Production In Vitro
Published on: October 13, 2023
Chronic glomerulonephritis associated with IgG subclass deficiency
Koichi Kamei1, Atsuko Nakagawa, Yasufumi Otsuka
1Department of Nephrology, National Children's Medical Center, National Center for Child Health and Development, 10-1, Okura 2chome, Setagaya-ku, Tokyo, 157-8535, Japan.
Pediatric Nephrology (Berlin, Germany)
|April 18, 2007
Summary
Patients with IgG subclass deficiency can develop chronic glomerulonephritis (GN). Specific IgG subclass deficiencies and deposition patterns may influence the type of GN, potentially increasing infection risk.
Area of Science:
- Immunology
- Nephrology
Background:
- Immunoglobulin G (IgG) subclass deficiency is a primary immunodeficiency.
- Chronic glomerulonephritis (GN) is a progressive kidney disease.
Observation:
- Two patients with combined IgG subclass deficiencies (IgG2/IgG4 and IgG2/IgG3/IgG4) developed distinct forms of chronic GN (membranoproliferative and membranous nephropathy, respectively).
- Patients with GN experienced more frequent infections and had higher serum IgG (especially IgG1) and IgM levels compared to controls without GN.
Findings:
- Glomerular deposition patterns of IgG subclasses differed between patients.
- Patient 1 showed mesangiocapillary IgG1 and IgG3 deposition; Patient 2 exhibited capillary IgG1 deposition.
Implications:
- This study highlights a potential link between specific IgG subclass deficiencies and the pathogenesis of chronic glomerulonephritis.
- Understanding these patterns may aid in diagnosing and managing kidney disease in immunocompromised individuals.
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