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Related Experiment Videos

Fibrillary glomerulonephritis.

B G Hsu1, C H Chang, S S Chiang

  • 1Division of Nephrology, Department of Internal Medicine, Shin Kong Wu Ho-Su Memorial Hospital, 95, Wen-Chang Road, Shih-Lin, Taipei 111, Taiwan.

Zhonghua Yi Xue Za Zhi = Chinese Medical Journal; Free China Ed
|October 5, 2001
PubMed
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Fibrillary glomerulonephritis, a rare kidney disease, involves microfibril deposits. This condition showed poor response to standard treatments in two Taiwanese patients.

Area of Science:

  • Nephrology
  • Pathology
  • Immunology

Background:

  • Fibrillary glomerulonephritis (FGN) is an uncommon glomerular disease characterized by Congo red-negative microfibril deposition.
  • Diagnosis relies on electron microscopy due to the small size (<30 nm) and random arrangement of microfibrils.
  • Distinguishing FGN from other microfibrillar diseases is crucial for appropriate management and prognosis.

Observation:

  • Two cases of biopsy-proven FGN in Taiwan are presented.
  • Patients exhibited typical symptoms including proteinuria, hematuria, renal insufficiency, and hypertension.
  • The disease demonstrated a progressive decline in renal function.

Findings:

  • Microfibrils in FGN are extracellular, randomly arranged, and non-branching.

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  • Electron microscopy is indispensable for identifying these characteristic ultrastructural findings.
  • The pathological findings highlight the specific nature of microfibril accumulation in glomeruli.

    • Implications:

    • FGN's rarity in Taiwan contrasts with its higher incidence in the United States.
    • Treatment with corticosteroids, pulse therapy, and immunosuppressants proved ineffective in halting disease progression.
    • These cases underscore the challenging nature of FGN and the need for further research into effective therapeutic strategies.