A renal lesion in ankylosing spondylitis

Area of Science:

• Nephrology
• Rheumatology
• Immunology

Background:

• Ankylosing spondylitis (AS) is a chronic inflammatory disease primarily affecting the spine.
• Renal involvement in AS is uncommon but has been reported.
• The relationship between AS and specific glomerulonephritides requires further elucidation.

Observation:

• Two patients with diagnosed ankylosing spondylitis presented with renal lesions.
• The observed renal pathology was histologically similar to IgA nephropathy.
• One patient exhibited severe, progressive renal changes, while the other had mild alterations.

Findings:

• The renal lesions suggest an immune complex-mediated glomerulonephritis in AS patients.
• Vascular changes were also noted in one patient.
• These findings support previous reports of specific renal lesions associated with AS.

Implications:

• The study highlights a potential link between ankylosing spondylitis and IgA nephropathy.
• The role of IgA deposition and elevated serum IgA levels in AS patients with renal lesions remains unclear.
• Further investigation is warranted to understand the pathogenesis and clinical significance of these renal findings in AS.