Involvement of tonsils in IgA nephropathy

Area of Science:

• Nephrology
• Immunology
• Otorhinolaryngology

Background:

• Immunoglobulin A (IgA) nephropathy is a primary glomerulonephritis.
• The role of tonsils in IgA nephropathy pathogenesis remains unclear.
• Tonsils are known immune organs potentially involved in mucosal immunity.

Purpose of the Study:

• To investigate the involvement of tonsils in the development of IgA nephropathy.
• To assess the impact of tonsil stimulation on urinary findings in IgA nephropathy patients.
• To evaluate the effect of tonsillectomy on IgA nephropathy progression.

Main Methods:

• Ultra-short wave stimulation of tonsils in 62 IgA nephropathy patients and 20 controls.
• Comparison of urinary findings before and after tonsil stimulation.
• Analysis of patient history regarding gross hematuria and upper respiratory tract infections.
• Measurement of serum secretory IgA levels.
• Evaluation of tonsillectomy outcomes in 36 patients, with long-term follow-up for 8 patients.

Main Results:

• 65% of IgA nephropathy patients showed urinary finding deterioration after tonsil stimulation, versus 30% in controls.
• Patients with prior gross hematuria episodes post-infection had higher serum secretory IgA and worse response to stimulation.
• Tonsillectomy led to decreased gross hematuria (56%), urinary protein (33%), and RBC counts (56%) in patients.
• Long-term follow-up showed mixed results, with some patients progressing to hemodialysis and others remaining stable.

Conclusions:

• Chronic tonsillitis may play a significant role in IgA nephropathy pathogenesis.
• Tonsil stimulation can exacerbate urinary abnormalities in IgA nephropathy patients.
• Tonsillectomy may offer some short-term benefits for urinary findings in IgA nephropathy, but long-term effects require further study.