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


International Journal of Inflammation, Cancer and Integrative Therapy

Author(s): Kanamori H, Matsubara T, Mima A, Sumi E, Nagai K,

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Abstract Monocyte chemoattractant protein (MCP-1) is an important mediator for macrophage recruitment in atherosclerosis and various glomerulonephritis. However, the role of MCP-1 and its receptor CCR2 in the progression of diabetic nephropathy remains unknown. Using a type 1 diabetic nephropathy model that shows noticeable glomerulosclerosis, we examined the role of MCP-1/CCR2 by propagermanium (Pro; CCR2 antagonist) treatment, and confirmed it by transfection of plasmids carrying the 7ND (a mutant of MCP-1) gene. We measured the mesangial matrix expansion, type IV collagen (Col4), transforming growth factor (TGF)-beta1 positive area, and macrophage infiltration in glomeruli after 12 weeks. Mesangial matrix expansion and macrophage infiltration were increased in diabetic mice and inhibited by Pro or 7ND-treatment. Increased glomerular expression of Col4 and TGF-beta1 in diabetic mice was also ameliorated. Thus blocking the MCP-1/CCR2 pathway ameliorated glomerulosclerosis, indicating that the MCP-1/CCR2 pathway plays a crucial role in the progression of diabetic nephropathy. This article was published in Biochem Biophys Res Commun and referenced in International Journal of Inflammation, Cancer and Integrative Therapy

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