Primary glomerulonephritis with detectable glomerular hepatitis B virus antigens

Area of Science:

• Nephrology
• Virology
• Immunopathology

Background:

• Hepatitis B virus (HBV) infection is a global health concern.
• Primary glomerulonephritis is a common kidney disease.
• The link between HBV infection and glomerulonephritis requires further elucidation.

Purpose of the Study:

• To investigate the presence and significance of HBV antigens in renal biopsies of patients with primary glomerulonephritis and HBsAg positivity.
• To correlate glomerular HBV antigen detection with HBV serology.
• To identify distinct glomerular pathologies associated with HBV infection.

Main Methods:

• Analysis of renal biopsies from 100 patients with primary glomerulonephritis and HBsAg positivity.
• Detection of glomerular HBV antigens (HBsAg, HBcAg, HBeAg) using polyclonal and monoclonal antibodies.
• Correlation of glomerular antigen findings with HBV serological markers.

Main Results:

• At least one HBV antigen was detected in glomeruli of 39% of patients.
• Glomerular HBsAg and HBeAg were detected in 22.3% and 28.4% of cases, respectively.
• A strong correlation was observed between glomerular and serum HBeAg, but not HBsAg.
• Distinct glomerular pathologies, including membranous nephropathy, mesangiocapillary glomerulonephritis, and IgA nephropathy, were identified in HBV-related cases.

Conclusions:

• HBV antigens are present in a significant proportion of patients with glomerulonephritis and HBsAg positivity.
• Glomerular HBeAg and HBsAg are associated with specific immune complex depositions and distinct renal pathologies.
• These findings support the etiological role of HBV in certain glomerulonephritis cases.