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Inhibition of MCP-1/CCR2 pathway ameliorates the development of diabetic nephropathy

Hiroshi Kanamori1, Takeshi Matsubara, Akira Mima

  • 1Department of Nephrology, Kyoto University Graduate School of Medicine, Kyoto, Japan.

Biochemical and Biophysical Research Communications
|July 17, 2007
PubMed

Insights

Blocking the monocyte chemoattractant protein (MCP-1)/CCR2 pathway ameliorates diabetic nephropathy progression. This study investigated MCP-1/CCR2

Area of Science:

  • Nephrology
  • Immunology
  • Diabetology

Background:

  • Monocyte chemoattractant protein (MCP-1) mediates macrophage recruitment in inflammatory diseases.
  • The role of MCP-1 and its receptor CCR2 in diabetic nephropathy is not well understood.

Purpose of the Study:

  • To investigate the role of the MCP-1/CCR2 pathway in the progression of diabetic nephropathy.
  • To evaluate the therapeutic potential of blocking this pathway.

Main Methods:

  • Utilized a type 1 diabetic nephropathy mouse model with glomerulosclerosis.
  • Administered propagermanium (Pro), a CCR2 antagonist, and used 7ND (MCP-1 mutant) gene transfection.
  • Assessed mesangial matrix expansion, type IV collagen (Col4), TGF-beta1 expression, and macrophage infiltration after 12 weeks.

Main Results:

  • Diabetic mice exhibited increased mesangial matrix expansion and macrophage infiltration.
  • Propagermanium or 7ND treatment significantly inhibited these increases.
  • Glomerular expression of Col4 and TGF-beta1 was elevated in diabetic mice and reduced by treatment.

Conclusions:

  • The MCP-1/CCR2 pathway plays a critical role in diabetic nephropathy progression.
  • Blocking the MCP-1/CCR2 pathway ameliorates glomerulosclerosis and related pathological changes.
  • Targeting MCP-1/CCR2 represents a potential therapeutic strategy for diabetic nephropathy.

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