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Familial lobular glomerulopathy: first case report in Asia
H Sato1, M Matsubara, R Marumo
1The Second Department of Internal Medicine, Tohoku University School of Medicine,1-1, Seiryo-cho, Aoba-ku, Sendai 980-77, Japan. tsaito2i@mail.cc.tohoku.ac.jp
Summary
This study reports the first Asian case of familial lobular glomerulopathy, a rare kidney disease. The findings confirm its universal occurrence across ethnicities, highlighting the need for broader genetic screening.
Area of Science:
- Nephrology
- Genetics
- Pathology
Background:
- Familial lobular glomerulopathy is a rare inherited kidney disease.
- Previous cases have primarily been reported in Caucasian families.
Observation:
- A Japanese student presented with unique lobular glomerulopathy featuring mesangial and subendothelial expansion and extensive PAS-positive deposits.
- Electron microscopy revealed massive, homogeneous fine granular deposits without fibrillar structures.
- Immunostaining was positive for fibronectin, immunoglobulin G, and fibrinogen.
Findings:
- Clinicopathologic features were identical to previously described familial lobular glomerulopathy.
- A family history revealed end-stage renal failure in multiple relatives on the patient's paternal side.
- This case represents the first documented instance in an Asian individual.
Implications:
- The disease universally affects individuals regardless of race, suggesting a common genetic basis.
- This finding underscores the importance of considering familial lobular glomerulopathy in diverse populations.
- Further research into the genetic underpinnings and global prevalence is warranted.