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Related Experiment Videos

Advanced glomerulosclerosis is reversible in nephrotic mice.

Y Mizuno-Horikawa1, S Mizuno, S Tamura

  • 1Division of Functional Diagnostic Imaging, Osaka University Medical School, 2-2-D11 Yamadaoka, Suita City, Osaka 565-0871, Japan.

Biochemical and Biophysical Research Communications
|June 9, 2001
PubMed
Summary

Glomerulosclerosis, a marker of chronic kidney disease, is reversible. Reducing kidney filtration in mice with unilateral ureter ligation reversed glomerulosclerosis and suppressed kidney cell growth.

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Area of Science:

  • Nephrology
  • Renal Pathophysiology
  • Molecular Biology

Background:

  • Advanced glomerulosclerosis is a hallmark of chronic renal diseases (CRD) and is generally considered irreversible.
  • Glomerular hyperfiltration and hypertrophy are implicated in the pathogenesis of glomerulosclerosis.

Purpose of the Study:

  • To investigate the reversibility of glomerulosclerosis in an animal model.
  • To explore the role of glomerular filtration and hypertrophy in glomerulosclerosis progression and regression.

Main Methods:

  • Utilized nephrotic ICGN (nep/nep) mice exhibiting rapid glomerulosclerosis and glomerular hyperfiltration.
  • Administered unilateral ureter ligation (UUO) to reduce glomerular filtration in the affected kidney.
  • Histologically assessed glomerulosclerosis, myofibroblast activity, matrix accumulation, and glomerular hypertrophy.

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Main Results:

  • Unilateral ureter ligation (UUO) significantly weakened glomerulosclerosis, characterized by reduced myofibroblast hyperplasia and matrix protein accumulation.
  • UUO suppressed glomerular hypertrophy in conjunction with the reversal of glomerulosclerosis.
  • Glomerular myofibroblasts underwent apoptotic cell death following UUO treatment.

Conclusions:

  • Glomerulosclerosis is reversible in this animal model, challenging the notion of its irreversibility.
  • Inhibiting glomerular filtration may induce glomerular remodeling and reverse sclerotic changes.
  • Modulation of molecular and cellular sclerogenesis through filtration inhibition offers a potential therapeutic strategy for chronic renal diseases.